d2912cb15bdda drivers/opp/core.c (Thomas Gleixner 2019-06-04 10:11:33 +0200 1) // SPDX-License-Identifier: GPL-2.0-only
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2) /*
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 3) * Generic OPP Interface
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 4) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 5) * Copyright (C) 2009-2010 Texas Instruments Incorporated.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 6) * Nishanth Menon
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 7) * Romit Dasgupta
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 8) * Kevin Hilman
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 9) */
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 10)
d6d2a5289a530 drivers/base/power/opp/core.c (Viresh Kumar 2015-10-17 09:45:18 +0530 11) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
d6d2a5289a530 drivers/base/power/opp/core.c (Viresh Kumar 2015-10-17 09:45:18 +0530 12)
d54974c2513f4 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:38 +0530 13) #include <linux/clk.h>
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 14) #include <linux/errno.h>
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 15) #include <linux/err.h>
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 16) #include <linux/slab.h>
51990e8254310 drivers/base/power/opp.c (Paul Gortmaker 2012-01-22 11:23:42 -0500 17) #include <linux/device.h>
80126ce7aeb4e drivers/base/power/opp.c (Liam Girdwood 2012-10-23 01:27:44 +0200 18) #include <linux/export.h>
009acd196fc86 drivers/opp/core.c (Viresh Kumar 2017-10-11 12:54:14 +0530 19) #include <linux/pm_domain.h>
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 20) #include <linux/regulator/consumer.h>
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 21)
f59d3ee8480d3 drivers/base/power/opp/core.c (Viresh Kumar 2015-09-04 13:47:26 +0530 22) #include "opp.h"
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 23)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 24) /*
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 25) * The root of the list of all opp-tables. All opp_table structures branch off
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 26) * from here, with each opp_table containing the list of opps it supports in
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 27) * various states of availability.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 28) */
f47b72a15a967 drivers/base/power/opp/core.c (Viresh Kumar 2016-05-05 16:20:33 +0530 29) LIST_HEAD(opp_tables);
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 30)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 31) /* OPP tables with uninitialized required OPPs */
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 32) LIST_HEAD(lazy_opp_tables);
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 33)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 34) /* Lock to allow exclusive modification to the device and opp lists */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 35) DEFINE_MUTEX(opp_table_lock);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 36) /* Flag indicating that opp_tables list is being updated at the moment */
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 37) static bool opp_tables_busy;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 38)
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 39) static bool _find_opp_dev(const struct device *dev, struct opp_table *opp_table)
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 40) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 41) struct opp_device *opp_dev;
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 42) bool found = false;
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 43)
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 44) mutex_lock(&opp_table->lock);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 45) list_for_each_entry(opp_dev, &opp_table->dev_list, node)
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 46) if (opp_dev->dev == dev) {
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 47) found = true;
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 48) break;
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 49) }
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 50)
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 51) mutex_unlock(&opp_table->lock);
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 52) return found;
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 53) }
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 54)
6ac423973397d drivers/base/power/opp/core.c (Wei Yongjun 2017-02-06 14:29:55 +0000 55) static struct opp_table *_find_opp_table_unlocked(struct device *dev)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 56) {
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 57) struct opp_table *opp_table;
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 58)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 59) list_for_each_entry(opp_table, &opp_tables, node) {
9e62edac519da drivers/opp/core.c (Viresh Kumar 2020-10-27 11:49:03 +0530 60) if (_find_opp_dev(dev, opp_table)) {
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 61) _get_opp_table_kref(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 62) return opp_table;
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 63) }
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 64) }
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 65)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 66) return ERR_PTR(-ENODEV);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 67) }
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 68)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 69) /**
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 70) * _find_opp_table() - find opp_table struct using device pointer
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 71) * @dev: device pointer used to lookup OPP table
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 72) *
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 73) * Search OPP table for one containing matching device.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 74) *
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 75) * Return: pointer to 'struct opp_table' if found, otherwise -ENODEV or
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 76) * -EINVAL based on type of error.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 77) *
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 78) * The callers must call dev_pm_opp_put_opp_table() after the table is used.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 79) */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 80) struct opp_table *_find_opp_table(struct device *dev)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 81) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 82) struct opp_table *opp_table;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 83)
50a3cb04a5f9c drivers/base/power/opp.c (Viresh Kumar 2015-08-12 15:59:39 +0530 84) if (IS_ERR_OR_NULL(dev)) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 85) pr_err("%s: Invalid parameters\n", __func__);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 86) return ERR_PTR(-EINVAL);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 87) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 88)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 89) mutex_lock(&opp_table_lock);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 90) opp_table = _find_opp_table_unlocked(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 91) mutex_unlock(&opp_table_lock);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 92)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 93) return opp_table;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 94) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 95)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 96) /**
d6d007429f216 drivers/base/power/opp.c (Javi Merino 2015-09-10 18:09:29 +0100 97) * dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 98) * @opp: opp for which voltage has to be returned for
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 99) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 100) * Return: voltage in micro volt corresponding to the opp, else
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 101) * return 0
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 102) *
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 103) * This is useful only for devices with single power supply.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 104) */
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 105) unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 106) {
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 107) if (IS_ERR_OR_NULL(opp)) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 108) pr_err("%s: Invalid parameters\n", __func__);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 109) return 0;
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 110) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 111)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 112) return opp->supplies[0].u_volt;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 113) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 114) EXPORT_SYMBOL_GPL(dev_pm_opp_get_voltage);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 115)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 116) /**
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 117) * dev_pm_opp_get_freq() - Gets the frequency corresponding to an available opp
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 118) * @opp: opp for which frequency has to be returned for
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 119) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 120) * Return: frequency in hertz corresponding to the opp, else
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 121) * return 0
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 122) */
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 123) unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 124) {
06a8a059e88bd drivers/opp/core.c (Andrew-sh.Cheng 2020-07-20 16:55:26 +0800 125) if (IS_ERR_OR_NULL(opp)) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 126) pr_err("%s: Invalid parameters\n", __func__);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 127) return 0;
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 128) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 129)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 130) return opp->rate;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 131) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 132) EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 133)
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 134) /**
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 135) * dev_pm_opp_get_level() - Gets the level corresponding to an available opp
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 136) * @opp: opp for which level value has to be returned for
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 137) *
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 138) * Return: level read from device tree corresponding to the opp, else
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 139) * return 0.
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 140) */
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 141) unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp)
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 142) {
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 143) if (IS_ERR_OR_NULL(opp) || !opp->available) {
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 144) pr_err("%s: Invalid parameters\n", __func__);
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 145) return 0;
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 146) }
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 147)
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 148) return opp->level;
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 149) }
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 150) EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);
5b93ac5423010 drivers/opp/core.c (Rajendra Nayak 2019-01-10 09:32:02 +0530 151)
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 152) /**
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 153) * dev_pm_opp_get_required_pstate() - Gets the required performance state
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 154) * corresponding to an available opp
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 155) * @opp: opp for which performance state has to be returned for
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 156) * @index: index of the required opp
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 157) *
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 158) * Return: performance state read from device tree corresponding to the
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 159) * required opp, else return 0.
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 160) */
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 161) unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 162) unsigned int index)
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 163) {
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 164) if (IS_ERR_OR_NULL(opp) || !opp->available ||
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 165) index >= opp->opp_table->required_opp_count) {
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 166) pr_err("%s: Invalid parameters\n", __func__);
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 167) return 0;
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 168) }
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 169)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 170) /* required-opps not fully initialized yet */
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 171) if (lazy_linking_pending(opp->opp_table))
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 172) return 0;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 173)
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 174) return opp->required_opps[index]->pstate;
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 175) }
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 176) EXPORT_SYMBOL_GPL(dev_pm_opp_get_required_pstate);
597ff5431fd41 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:19 +0300 177)
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 178) /**
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 179) * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 180) * @opp: opp for which turbo mode is being verified
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 181) *
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 182) * Turbo OPPs are not for normal use, and can be enabled (under certain
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 183) * conditions) for short duration of times to finish high throughput work
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 184) * quickly. Running on them for longer times may overheat the chip.
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 185) *
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 186) * Return: true if opp is turbo opp, else false.
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 187) */
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 188) bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 189) {
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 190) if (IS_ERR_OR_NULL(opp) || !opp->available) {
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 191) pr_err("%s: Invalid parameters\n", __func__);
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 192) return false;
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 193) }
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 194)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 195) return opp->turbo;
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 196) }
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 197) EXPORT_SYMBOL_GPL(dev_pm_opp_is_turbo);
19445b25e350e drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-07-09 17:43:35 +0200 198)
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 199) /**
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 200) * dev_pm_opp_get_max_clock_latency() - Get max clock latency in nanoseconds
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 201) * @dev: device for which we do this operation
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 202) *
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 203) * Return: This function returns the max clock latency in nanoseconds.
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 204) */
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 205) unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 206) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 207) struct opp_table *opp_table;
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 208) unsigned long clock_latency_ns;
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 209)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 210) opp_table = _find_opp_table(dev);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 211) if (IS_ERR(opp_table))
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 212) return 0;
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 213)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 214) clock_latency_ns = opp_table->clock_latency_ns_max;
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 215)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 216) dev_pm_opp_put_opp_table(opp_table);
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 217)
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 218) return clock_latency_ns;
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 219) }
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 220) EXPORT_SYMBOL_GPL(dev_pm_opp_get_max_clock_latency);
3ca9bb33c627f drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:03 +0530 221)
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 222) /**
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 223) * dev_pm_opp_get_max_volt_latency() - Get max voltage latency in nanoseconds
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 224) * @dev: device for which we do this operation
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 225) *
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 226) * Return: This function returns the max voltage latency in nanoseconds.
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 227) */
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 228) unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 229) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 230) struct opp_table *opp_table;
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 231) struct dev_pm_opp *opp;
478256bddb032 drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:11 +0530 232) struct regulator *reg;
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 233) unsigned long latency_ns = 0;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 234) int ret, i, count;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 235) struct {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 236) unsigned long min;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 237) unsigned long max;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 238) } *uV;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 239)
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 240) opp_table = _find_opp_table(dev);
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 241) if (IS_ERR(opp_table))
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 242) return 0;
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 243)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 244) /* Regulator may not be required for the device */
90e3577b5feb4 drivers/opp/core.c (Viresh Kumar 2018-12-11 16:32:47 +0530 245) if (!opp_table->regulators)
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 246) goto put_opp_table;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 247)
90e3577b5feb4 drivers/opp/core.c (Viresh Kumar 2018-12-11 16:32:47 +0530 248) count = opp_table->regulator_count;
90e3577b5feb4 drivers/opp/core.c (Viresh Kumar 2018-12-11 16:32:47 +0530 249)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 250) uV = kmalloc_array(count, sizeof(*uV), GFP_KERNEL);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 251) if (!uV)
478256bddb032 drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:11 +0530 252) goto put_opp_table;
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 253)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 254) mutex_lock(&opp_table->lock);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 255)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 256) for (i = 0; i < count; i++) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 257) uV[i].min = ~0;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 258) uV[i].max = 0;
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 259)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 260) list_for_each_entry(opp, &opp_table->opp_list, node) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 261) if (!opp->available)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 262) continue;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 263)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 264) if (opp->supplies[i].u_volt_min < uV[i].min)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 265) uV[i].min = opp->supplies[i].u_volt_min;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 266) if (opp->supplies[i].u_volt_max > uV[i].max)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 267) uV[i].max = opp->supplies[i].u_volt_max;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 268) }
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 269) }
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 270)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 271) mutex_unlock(&opp_table->lock);
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 272)
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 273) /*
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 274) * The caller needs to ensure that opp_table (and hence the regulator)
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 275) * isn't freed, while we are executing this routine.
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 276) */
8cc311167c22f drivers/base/power/opp/core.c (Andrzej Hajda 2017-02-20 19:57:57 +0100 277) for (i = 0; i < count; i++) {
478256bddb032 drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:11 +0530 278) reg = opp_table->regulators[i];
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 279) ret = regulator_set_voltage_time(reg, uV[i].min, uV[i].max);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 280) if (ret > 0)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 281) latency_ns += ret * 1000;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 282) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 283)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 284) kfree(uV);
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 285) put_opp_table:
cdd3e614cfda7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:51 +0530 286) dev_pm_opp_put_opp_table(opp_table);
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 287)
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 288) return latency_ns;
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 289) }
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 290) EXPORT_SYMBOL_GPL(dev_pm_opp_get_max_volt_latency);
655c9df961751 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:35 +0530 291)
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 292) /**
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 293) * dev_pm_opp_get_max_transition_latency() - Get max transition latency in
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 294) * nanoseconds
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 295) * @dev: device for which we do this operation
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 296) *
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 297) * Return: This function returns the max transition latency, in nanoseconds, to
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 298) * switch from one OPP to other.
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 299) */
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 300) unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 301) {
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 302) return dev_pm_opp_get_max_volt_latency(dev) +
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 303) dev_pm_opp_get_max_clock_latency(dev);
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 304) }
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 305) EXPORT_SYMBOL_GPL(dev_pm_opp_get_max_transition_latency);
2174344765f47 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:36 +0530 306)
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 307) /**
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 308) * dev_pm_opp_get_suspend_opp_freq() - Get frequency of suspend opp in Hz
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 309) * @dev: device for which we do this operation
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 310) *
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 311) * Return: This function returns the frequency of the OPP marked as suspend_opp
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 312) * if one is available, else returns 0;
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 313) */
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 314) unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev)
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 315) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 316) struct opp_table *opp_table;
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 317) unsigned long freq = 0;
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 318)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 319) opp_table = _find_opp_table(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 320) if (IS_ERR(opp_table))
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 321) return 0;
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 322)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 323) if (opp_table->suspend_opp && opp_table->suspend_opp->available)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 324) freq = dev_pm_opp_get_freq(opp_table->suspend_opp);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 325)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 326) dev_pm_opp_put_opp_table(opp_table);
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 327)
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 328) return freq;
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 329) }
3aa26a3b2ea63 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:02 +0530 330) EXPORT_SYMBOL_GPL(dev_pm_opp_get_suspend_opp_freq);
4eafbd15b6c84 drivers/base/power/opp.c (Bartlomiej Zolnierkiewicz 2015-09-08 18:41:01 +0200 331)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 332) int _get_opp_count(struct opp_table *opp_table)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 333) {
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 334) struct dev_pm_opp *opp;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 335) int count = 0;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 336)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 337) mutex_lock(&opp_table->lock);
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 338)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 339) list_for_each_entry(opp, &opp_table->opp_list, node) {
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 340) if (opp->available)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 341) count++;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 342) }
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 343)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 344) mutex_unlock(&opp_table->lock);
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 345)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 346) return count;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 347) }
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 348)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 349) /**
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 350) * dev_pm_opp_get_opp_count() - Get number of opps available in the opp table
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 351) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 352) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 353) * Return: This function returns the number of available opps if there are any,
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 354) * else returns 0 if none or the corresponding error value.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 355) */
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 356) int dev_pm_opp_get_opp_count(struct device *dev)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 357) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 358) struct opp_table *opp_table;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 359) int count;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 360)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 361) opp_table = _find_opp_table(dev);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 362) if (IS_ERR(opp_table)) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 363) count = PTR_ERR(opp_table);
035ed07208dc5 drivers/opp/core.c (Fabio Estevam 2017-09-29 14:39:49 -0300 364) dev_dbg(dev, "%s: OPP table not found (%d)\n",
b4718c02f49ab drivers/base/power/opp.c (Dmitry Torokhov 2014-12-16 15:09:38 -0800 365) __func__, count);
09f662f95306f drivers/opp/core.c (Viresh Kumar 2018-10-03 15:22:03 +0530 366) return count;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 367) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 368)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 369) count = _get_opp_count(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 370) dev_pm_opp_put_opp_table(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 371)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 372) return count;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 373) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 374) EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_count);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 375)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 376) /**
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 377) * dev_pm_opp_find_freq_exact() - search for an exact frequency
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 378) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 379) * @freq: frequency to search for
7ae496187876d drivers/base/power/opp.c (Nishanth Menon 2011-02-25 23:46:18 +0100 380) * @available: true/false - match for available opp
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 381) *
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 382) * Return: Searches for exact match in the opp table and returns pointer to the
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 383) * matching opp if found, else returns ERR_PTR in case of error and should
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 384) * be handled using IS_ERR. Error return values can be:
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 385) * EINVAL: for bad pointer
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 386) * ERANGE: no match found for search
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 387) * ENODEV: if device not found in list of registered devices
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 388) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 389) * Note: available is a modifier for the search. if available=true, then the
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 390) * match is for exact matching frequency and is available in the stored OPP
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 391) * table. if false, the match is for exact frequency which is not available.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 392) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 393) * This provides a mechanism to enable an opp which is not available currently
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 394) * or the opposite as well.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 395) *
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 396) * The callers are required to call dev_pm_opp_put() for the returned OPP after
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 397) * use.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 398) */
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 399) struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 400) unsigned long freq,
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 401) bool available)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 402) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 403) struct opp_table *opp_table;
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 404) struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 405)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 406) opp_table = _find_opp_table(dev);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 407) if (IS_ERR(opp_table)) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 408) int r = PTR_ERR(opp_table);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 409)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 410) dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 411) return ERR_PTR(r);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 412) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 413)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 414) mutex_lock(&opp_table->lock);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 415)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 416) list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 417) if (temp_opp->available == available &&
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 418) temp_opp->rate == freq) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 419) opp = temp_opp;
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 420)
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 421) /* Increment the reference count of OPP */
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 422) dev_pm_opp_get(opp);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 423) break;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 424) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 425) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 426)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 427) mutex_unlock(&opp_table->lock);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 428) dev_pm_opp_put_opp_table(opp_table);
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 429)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 430) return opp;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 431) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 432) EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 433)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 434) /**
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 435) * dev_pm_opp_find_level_exact() - search for an exact level
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 436) * @dev: device for which we do this operation
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 437) * @level: level to search for
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 438) *
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 439) * Return: Searches for exact match in the opp table and returns pointer to the
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 440) * matching opp if found, else returns ERR_PTR in case of error and should
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 441) * be handled using IS_ERR. Error return values can be:
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 442) * EINVAL: for bad pointer
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 443) * ERANGE: no match found for search
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 444) * ENODEV: if device not found in list of registered devices
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 445) *
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 446) * The callers are required to call dev_pm_opp_put() for the returned OPP after
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 447) * use.
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 448) */
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 449) struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 450) unsigned int level)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 451) {
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 452) struct opp_table *opp_table;
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 453) struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 454)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 455) opp_table = _find_opp_table(dev);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 456) if (IS_ERR(opp_table)) {
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 457) int r = PTR_ERR(opp_table);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 458)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 459) dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 460) return ERR_PTR(r);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 461) }
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 462)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 463) mutex_lock(&opp_table->lock);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 464)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 465) list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 466) if (temp_opp->level == level) {
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 467) opp = temp_opp;
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 468)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 469) /* Increment the reference count of OPP */
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 470) dev_pm_opp_get(opp);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 471) break;
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 472) }
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 473) }
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 474)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 475) mutex_unlock(&opp_table->lock);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 476) dev_pm_opp_put_opp_table(opp_table);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 477)
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 478) return opp;
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 479) }
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 480) EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
71419d84c216c drivers/opp/core.c (Niklas Cassel 2019-07-25 12:41:29 +0200 481)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 482) /**
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 483) * dev_pm_opp_find_level_ceil() - search for an rounded up level
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 484) * @dev: device for which we do this operation
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 485) * @level: level to search for
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 486) *
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 487) * Return: Searches for rounded up match in the opp table and returns pointer
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 488) * to the matching opp if found, else returns ERR_PTR in case of error and
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 489) * should be handled using IS_ERR. Error return values can be:
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 490) * EINVAL: for bad pointer
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 491) * ERANGE: no match found for search
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 492) * ENODEV: if device not found in list of registered devices
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 493) *
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 494) * The callers are required to call dev_pm_opp_put() for the returned OPP after
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 495) * use.
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 496) */
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 497) struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 498) unsigned int *level)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 499) {
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 500) struct opp_table *opp_table;
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 501) struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 502)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 503) opp_table = _find_opp_table(dev);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 504) if (IS_ERR(opp_table)) {
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 505) int r = PTR_ERR(opp_table);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 506)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 507) dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 508) return ERR_PTR(r);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 509) }
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 510)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 511) mutex_lock(&opp_table->lock);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 512)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 513) list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 514) if (temp_opp->available && temp_opp->level >= *level) {
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 515) opp = temp_opp;
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 516) *level = opp->level;
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 517)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 518) /* Increment the reference count of OPP */
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 519) dev_pm_opp_get(opp);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 520) break;
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 521) }
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 522) }
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 523)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 524) mutex_unlock(&opp_table->lock);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 525) dev_pm_opp_put_opp_table(opp_table);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 526)
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 527) return opp;
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 528) }
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 529) EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
8dd5cada393f6 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:18 +0300 530)
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 531) static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 532) unsigned long *freq)
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 533) {
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 534) struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 535)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 536) mutex_lock(&opp_table->lock);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 537)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 538) list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 539) if (temp_opp->available && temp_opp->rate >= *freq) {
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 540) opp = temp_opp;
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 541) *freq = opp->rate;
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 542)
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 543) /* Increment the reference count of OPP */
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 544) dev_pm_opp_get(opp);
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 545) break;
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 546) }
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 547) }
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 548)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 549) mutex_unlock(&opp_table->lock);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 550)
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 551) return opp;
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 552) }
067b7ce083df6 drivers/base/power/opp/core.c (Jisheng Zhang 2016-07-25 14:11:16 +0800 553)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 554) /**
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 555) * dev_pm_opp_find_freq_ceil() - Search for an rounded ceil freq
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 556) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 557) * @freq: Start frequency
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 558) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 559) * Search for the matching ceil *available* OPP from a starting freq
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 560) * for a device.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 561) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 562) * Return: matching *opp and refreshes *freq accordingly, else returns
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 563) * ERR_PTR in case of error and should be handled using IS_ERR. Error return
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 564) * values can be:
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 565) * EINVAL: for bad pointer
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 566) * ERANGE: no match found for search
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 567) * ENODEV: if device not found in list of registered devices
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 568) *
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 569) * The callers are required to call dev_pm_opp_put() for the returned OPP after
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 570) * use.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 571) */
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 572) struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 573) unsigned long *freq)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 574) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 575) struct opp_table *opp_table;
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 576) struct dev_pm_opp *opp;
b02ded246d011 drivers/base/power/opp.c (Dmitry Torokhov 2014-12-16 15:09:36 -0800 577)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 578) if (!dev || !freq) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 579) dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 580) return ERR_PTR(-EINVAL);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 581) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 582)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 583) opp_table = _find_opp_table(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 584) if (IS_ERR(opp_table))
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 585) return ERR_CAST(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 586)
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 587) opp = _find_freq_ceil(opp_table, freq);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 588)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 589) dev_pm_opp_put_opp_table(opp_table);
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 590)
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 591) return opp;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 592) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 593) EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 594)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 595) /**
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 596) * dev_pm_opp_find_freq_floor() - Search for a rounded floor freq
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 597) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 598) * @freq: Start frequency
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 599) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 600) * Search for the matching floor *available* OPP from a starting freq
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 601) * for a device.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 602) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 603) * Return: matching *opp and refreshes *freq accordingly, else returns
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 604) * ERR_PTR in case of error and should be handled using IS_ERR. Error return
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 605) * values can be:
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 606) * EINVAL: for bad pointer
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 607) * ERANGE: no match found for search
0779726cc2658 drivers/base/power/opp.c (Nishanth Menon 2012-10-24 22:00:12 +0200 608) * ENODEV: if device not found in list of registered devices
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 609) *
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 610) * The callers are required to call dev_pm_opp_put() for the returned OPP after
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 611) * use.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 612) */
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 613) struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 614) unsigned long *freq)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 615) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 616) struct opp_table *opp_table;
47d43ba73eb98 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:51 -0500 617) struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 618)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 619) if (!dev || !freq) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 620) dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 621) return ERR_PTR(-EINVAL);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 622) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 623)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 624) opp_table = _find_opp_table(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 625) if (IS_ERR(opp_table))
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 626) return ERR_CAST(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 627)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 628) mutex_lock(&opp_table->lock);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 629)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 630) list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 631) if (temp_opp->available) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 632) /* go to the next node, before choosing prev */
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 633) if (temp_opp->rate > *freq)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 634) break;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 635) else
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 636) opp = temp_opp;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 637) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 638) }
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 639)
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 640) /* Increment the reference count of OPP */
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 641) if (!IS_ERR(opp))
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 642) dev_pm_opp_get(opp);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 643) mutex_unlock(&opp_table->lock);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 644) dev_pm_opp_put_opp_table(opp_table);
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 645)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 646) if (!IS_ERR(opp))
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 647) *freq = opp->rate;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 648)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 649) return opp;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 650) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 651) EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 652)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 653) /**
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 654) * dev_pm_opp_find_freq_ceil_by_volt() - Find OPP with highest frequency for
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 655) * target voltage.
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 656) * @dev: Device for which we do this operation.
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 657) * @u_volt: Target voltage.
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 658) *
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 659) * Search for OPP with highest (ceil) frequency and has voltage <= u_volt.
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 660) *
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 661) * Return: matching *opp, else returns ERR_PTR in case of error which should be
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 662) * handled using IS_ERR.
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 663) *
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 664) * Error return values can be:
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 665) * EINVAL: bad parameters
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 666) *
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 667) * The callers are required to call dev_pm_opp_put() for the returned OPP after
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 668) * use.
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 669) */
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 670) struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 671) unsigned long u_volt)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 672) {
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 673) struct opp_table *opp_table;
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 674) struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 675)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 676) if (!dev || !u_volt) {
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 677) dev_err(dev, "%s: Invalid argument volt=%lu\n", __func__,
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 678) u_volt);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 679) return ERR_PTR(-EINVAL);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 680) }
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 681)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 682) opp_table = _find_opp_table(dev);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 683) if (IS_ERR(opp_table))
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 684) return ERR_CAST(opp_table);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 685)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 686) mutex_lock(&opp_table->lock);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 687)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 688) list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 689) if (temp_opp->available) {
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 690) if (temp_opp->supplies[0].u_volt > u_volt)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 691) break;
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 692) opp = temp_opp;
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 693) }
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 694) }
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 695)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 696) /* Increment the reference count of OPP */
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 697) if (!IS_ERR(opp))
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 698) dev_pm_opp_get(opp);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 699)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 700) mutex_unlock(&opp_table->lock);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 701) dev_pm_opp_put_opp_table(opp_table);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 702)
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 703) return opp;
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 704) }
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 705) EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil_by_volt);
2f36bde0fc8f1 drivers/opp/core.c (Andrew-sh.Cheng 2019-03-29 14:46:10 +0800 706)
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 707) static int _set_opp_voltage(struct device *dev, struct regulator *reg,
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 708) struct dev_pm_opp_supply *supply)
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 709) {
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 710) int ret;
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 711)
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 712) /* Regulator not available for device */
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 713) if (IS_ERR(reg)) {
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 714) dev_dbg(dev, "%s: regulator not available: %ld\n", __func__,
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 715) PTR_ERR(reg));
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 716) return 0;
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 717) }
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 718)
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 719) dev_dbg(dev, "%s: voltages (mV): %lu %lu %lu\n", __func__,
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 720) supply->u_volt_min, supply->u_volt, supply->u_volt_max);
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 721)
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 722) ret = regulator_set_voltage_triplet(reg, supply->u_volt_min,
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 723) supply->u_volt, supply->u_volt_max);
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 724) if (ret)
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 725) dev_err(dev, "%s: failed to set voltage (%lu %lu %lu mV): %d\n",
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 726) __func__, supply->u_volt_min, supply->u_volt,
ce31781a7574a drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:18 +0530 727) supply->u_volt_max, ret);
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 728)
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 729) return ret;
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 730) }
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 731)
285881b51eb58 drivers/opp/core.c (Viresh Kumar 2019-01-31 13:53:25 +0530 732) static inline int _generic_set_opp_clk_only(struct device *dev, struct clk *clk,
285881b51eb58 drivers/opp/core.c (Viresh Kumar 2019-01-31 13:53:25 +0530 733) unsigned long freq)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 734) {
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 735) int ret;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 736)
35e74b2ee8ec6 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 737) /* We may reach here for devices which don't change frequency */
35e74b2ee8ec6 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 738) if (IS_ERR(clk))
35e74b2ee8ec6 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 739) return 0;
35e74b2ee8ec6 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 740)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 741) ret = clk_set_rate(clk, freq);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 742) if (ret) {
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 743) dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 744) ret);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 745) }
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 746)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 747) return ret;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 748) }
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 749)
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 750) static int _generic_set_opp_regulator(struct opp_table *opp_table,
c74b32fadc00f drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:10 +0530 751) struct device *dev,
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 752) struct dev_pm_opp *opp,
c74b32fadc00f drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:10 +0530 753) unsigned long freq,
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 754) int scaling_down)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 755) {
c74b32fadc00f drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:10 +0530 756) struct regulator *reg = opp_table->regulators[0];
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 757) struct dev_pm_opp *old_opp = opp_table->current_opp;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 758) int ret;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 759)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 760) /* This function only supports single regulator per device */
c74b32fadc00f drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:10 +0530 761) if (WARN_ON(opp_table->regulator_count > 1)) {
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 762) dev_err(dev, "multiple regulators are not supported\n");
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 763) return -EINVAL;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 764) }
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 765)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 766) /* Scaling up? Scale voltage before frequency */
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 767) if (!scaling_down) {
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 768) ret = _set_opp_voltage(dev, reg, opp->supplies);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 769) if (ret)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 770) goto restore_voltage;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 771) }
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 772)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 773) /* Change frequency */
285881b51eb58 drivers/opp/core.c (Viresh Kumar 2019-01-31 13:53:25 +0530 774) ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 775) if (ret)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 776) goto restore_voltage;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 777)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 778) /* Scaling down? Scale voltage after frequency */
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 779) if (scaling_down) {
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 780) ret = _set_opp_voltage(dev, reg, opp->supplies);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 781) if (ret)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 782) goto restore_freq;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 783) }
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 784)
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 785) /*
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 786) * Enable the regulator after setting its voltages, otherwise it breaks
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 787) * some boot-enabled regulators.
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 788) */
72f80ce4ef9b7 drivers/opp/core.c (Viresh Kumar 2020-08-13 08:38:37 +0530 789) if (unlikely(!opp_table->enabled)) {
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 790) ret = regulator_enable(reg);
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 791) if (ret < 0)
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 792) dev_warn(dev, "Failed to enable regulator: %d", ret);
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 793) }
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 794)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 795) return 0;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 796)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 797) restore_freq:
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 798) if (_generic_set_opp_clk_only(dev, opp_table->clk, old_opp->rate))
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 799) dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n",
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 800) __func__, old_opp->rate);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 801) restore_voltage:
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 802) /* This shouldn't harm even if the voltages weren't updated earlier */
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 803) _set_opp_voltage(dev, reg, old_opp->supplies);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 804)
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 805) return ret;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 806) }
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 807)
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 808) static int _set_opp_bw(const struct opp_table *opp_table,
240ae50e23061 drivers/opp/core.c (Viresh Kumar 2021-01-21 15:27:55 +0530 809) struct dev_pm_opp *opp, struct device *dev)
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 810) {
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 811) u32 avg, peak;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 812) int i, ret;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 813)
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 814) if (!opp_table->paths)
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 815) return 0;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 816)
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 817) for (i = 0; i < opp_table->path_count; i++) {
240ae50e23061 drivers/opp/core.c (Viresh Kumar 2021-01-21 15:27:55 +0530 818) if (!opp) {
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 819) avg = 0;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 820) peak = 0;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 821) } else {
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 822) avg = opp->bandwidth[i].avg;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 823) peak = opp->bandwidth[i].peak;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 824) }
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 825) ret = icc_set_bw(opp_table->paths[i], avg, peak);
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 826) if (ret) {
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 827) dev_err(dev, "Failed to %s bandwidth[%d]: %d\n",
240ae50e23061 drivers/opp/core.c (Viresh Kumar 2021-01-21 15:27:55 +0530 828) opp ? "set" : "remove", i, ret);
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 829) return ret;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 830) }
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 831) }
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 832)
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 833) return 0;
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 834) }
b00e667a6d8b2 drivers/opp/core.c (Viresh Kumar 2020-05-27 09:33:44 +0530 835)
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 836) static int _set_opp_custom(const struct opp_table *opp_table,
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 837) struct device *dev, struct dev_pm_opp *opp,
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 838) unsigned long freq)
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 839) {
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 840) struct dev_pm_set_opp_data *data = opp_table->set_opp_data;
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 841) struct dev_pm_opp *old_opp = opp_table->current_opp;
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 842) int size;
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 843)
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 844) /*
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 845) * We support this only if dev_pm_opp_set_regulators() was called
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 846) * earlier.
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 847) */
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 848) if (opp_table->sod_supplies) {
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 849) size = sizeof(*old_opp->supplies) * opp_table->regulator_count;
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 850) memcpy(data->old_opp.supplies, old_opp->supplies, size);
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 851) memcpy(data->new_opp.supplies, opp->supplies, size);
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 852) data->regulator_count = opp_table->regulator_count;
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 853) } else {
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 854) data->regulator_count = 0;
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 855) }
04b447df1d098 drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:49 +0300 856)
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 857) data->regulators = opp_table->regulators;
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 858) data->clk = opp_table->clk;
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 859) data->dev = dev;
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 860) data->old_opp.rate = old_opp->rate;
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 861) data->new_opp.rate = freq;
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 862)
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 863) return opp_table->set_opp(data);
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 864) }
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 865)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 866) static int _set_required_opp(struct device *dev, struct device *pd_dev,
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 867) struct dev_pm_opp *opp, int i)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 868) {
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 869) unsigned int pstate = likely(opp) ? opp->required_opps[i]->pstate : 0;
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 870) int ret;
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 871)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 872) if (!pd_dev)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 873) return 0;
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 874)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 875) ret = dev_pm_genpd_set_performance_state(pd_dev, pstate);
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 876) if (ret) {
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 877) dev_err(dev, "Failed to set performance rate of %s: %d (%d)\n",
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 878) dev_name(pd_dev), pstate, ret);
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 879) }
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 880)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 881) return ret;
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 882) }
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 883)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 884) /* This is only called for PM domain for now */
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 885) static int _set_required_opps(struct device *dev,
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 886) struct opp_table *opp_table,
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 887) struct dev_pm_opp *opp, bool up)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 888) {
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 889) struct opp_table **required_opp_tables = opp_table->required_opp_tables;
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 890) struct device **genpd_virt_devs = opp_table->genpd_virt_devs;
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 891) int i, ret = 0;
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 892)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 893) if (!required_opp_tables)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 894) return 0;
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 895)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 896) /* required-opps not fully initialized yet */
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 897) if (lazy_linking_pending(opp_table))
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 898) return -EBUSY;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 899)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 900) /* Single genpd case */
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 901) if (!genpd_virt_devs)
60cdeae0d627e drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:44 +0200 902) return _set_required_opp(dev, dev, opp, 0);
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 903)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 904) /* Multiple genpd case */
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 905)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 906) /*
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 907) * Acquire genpd_virt_dev_lock to make sure we don't use a genpd_dev
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 908) * after it is freed from another thread.
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 909) */
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 910) mutex_lock(&opp_table->genpd_virt_dev_lock);
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 911)
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 912) /* Scaling up? Set required OPPs in normal order, else reverse */
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 913) if (up) {
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 914) for (i = 0; i < opp_table->required_opp_count; i++) {
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 915) ret = _set_required_opp(dev, genpd_virt_devs[i], opp, i);
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 916) if (ret)
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 917) break;
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 918) }
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 919) } else {
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 920) for (i = opp_table->required_opp_count - 1; i >= 0; i--) {
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 921) ret = _set_required_opp(dev, genpd_virt_devs[i], opp, i);
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 922) if (ret)
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 923) break;
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 924) }
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 925) }
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 926)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 927) mutex_unlock(&opp_table->genpd_virt_dev_lock);
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 928)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 929) return ret;
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 930) }
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 931)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 932) static void _find_current_opp(struct device *dev, struct opp_table *opp_table)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 933) {
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 934) struct dev_pm_opp *opp = ERR_PTR(-ENODEV);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 935) unsigned long freq;
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 936)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 937) if (!IS_ERR(opp_table->clk)) {
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 938) freq = clk_get_rate(opp_table->clk);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 939) opp = _find_freq_ceil(opp_table, &freq);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 940) }
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 941)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 942) /*
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 943) * Unable to find the current OPP ? Pick the first from the list since
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 944) * it is in ascending order, otherwise rest of the code will need to
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 945) * make special checks to validate current_opp.
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 946) */
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 947) if (IS_ERR(opp)) {
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 948) mutex_lock(&opp_table->lock);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 949) opp = list_first_entry(&opp_table->opp_list, struct dev_pm_opp, node);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 950) dev_pm_opp_get(opp);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 951) mutex_unlock(&opp_table->lock);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 952) }
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 953)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 954) opp_table->current_opp = opp;
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 955) }
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 956)
5ad58bbacf802 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:08:45 +0530 957) static int _disable_opp_table(struct device *dev, struct opp_table *opp_table)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 958) {
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 959) int ret;
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 960)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 961) if (!opp_table->enabled)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 962) return 0;
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 963)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 964) /*
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 965) * Some drivers need to support cases where some platforms may
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 966) * have OPP table for the device, while others don't and
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 967) * opp_set_rate() just needs to behave like clk_set_rate().
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 968) */
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 969) if (!_get_opp_count(opp_table))
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 970) return 0;
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 971)
240ae50e23061 drivers/opp/core.c (Viresh Kumar 2021-01-21 15:27:55 +0530 972) ret = _set_opp_bw(opp_table, NULL, dev);
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 973) if (ret)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 974) return ret;
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 975)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 976) if (opp_table->regulators)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 977) regulator_disable(opp_table->regulators[0]);
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 978)
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 979) ret = _set_required_opps(dev, opp_table, NULL, false);
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 980)
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 981) opp_table->enabled = false;
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 982) return ret;
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 983) }
f3364e17d5716 drivers/opp/core.c (Viresh Kumar 2020-08-13 09:48:04 +0530 984)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 985) static int _set_opp(struct device *dev, struct opp_table *opp_table,
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 986) struct dev_pm_opp *opp, unsigned long freq)
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 987) {
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 988) struct dev_pm_opp *old_opp;
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 989) int scaling_down, ret;
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 990)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 991) if (unlikely(!opp))
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 992) return _disable_opp_table(dev, opp_table);
aca48b61f9638 drivers/opp/core.c (Rajendra Nayak 2020-04-08 19:16:27 +0530 993)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 994) /* Find the currently set OPP if we don't know already */
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 995) if (unlikely(!opp_table->current_opp))
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 996) _find_current_opp(dev, opp_table);
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 997)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 998) old_opp = opp_table->current_opp;
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 999)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 1000) /* Return early if nothing to do */
de04241ab87af drivers/opp/core.c (Jonathan Marek 2021-02-16 15:10:29 -0500 1001) if (old_opp == opp && opp_table->current_rate == freq &&
de04241ab87af drivers/opp/core.c (Jonathan Marek 2021-02-16 15:10:29 -0500 1002) opp_table->enabled) {
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 1003) dev_dbg(dev, "%s: OPPs are same, nothing to do\n", __func__);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1004) return 0;
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 1005) }
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 1006)
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1007) dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n",
de04241ab87af drivers/opp/core.c (Jonathan Marek 2021-02-16 15:10:29 -0500 1008) __func__, opp_table->current_rate, freq, old_opp->level,
de04241ab87af drivers/opp/core.c (Jonathan Marek 2021-02-16 15:10:29 -0500 1009) opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0,
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1010) opp->bandwidth ? opp->bandwidth[0].peak : 0);
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1011)
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1012) scaling_down = _opp_compare_key(old_opp, opp);
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1013) if (scaling_down == -1)
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1014) scaling_down = 0;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1015)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 1016) /* Scaling up? Configure required OPPs before frequency */
f0b88fa455952 drivers/opp/core.c (Viresh Kumar 2021-01-21 16:00:12 +0530 1017) if (!scaling_down) {
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 1018) ret = _set_required_opps(dev, opp_table, opp, true);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1019) if (ret) {
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1020) dev_err(dev, "Failed to set required opps: %d\n", ret);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1021) return ret;
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1022) }
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1023)
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1024) ret = _set_opp_bw(opp_table, opp, dev);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1025) if (ret) {
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1026) dev_err(dev, "Failed to set bw: %d\n", ret);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1027) return ret;
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1028) }
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 1029) }
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 1030)
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 1031) if (opp_table->set_opp) {
509e4777ca41d drivers/opp/core.c (Viresh Kumar 2021-01-21 13:06:01 +0530 1032) ret = _set_opp_custom(opp_table, dev, opp, freq);
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 1033) } else if (opp_table->regulators) {
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 1034) ret = _generic_set_opp_regulator(opp_table, dev, opp, freq,
3f62670fcca4a drivers/opp/core.c (Viresh Kumar 2021-01-21 12:38:13 +0530 1035) scaling_down);
c74b32fadc00f drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:10 +0530 1036) } else {
7e535993fa4f6 drivers/opp/core.c (Viresh Kumar 2018-06-12 14:47:03 +0530 1037) /* Only frequency scaling */
1d3c42cabbd35 drivers/opp/core.c (Viresh Kumar 2021-01-20 15:57:21 +0530 1038) ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq);
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 1039) }
c74b32fadc00f drivers/base/power/opp/core.c (Viresh Kumar 2017-05-23 09:32:10 +0530 1040)
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1041) if (ret)
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1042) return ret;
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1043)
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 1044) /* Scaling down? Configure required OPPs after frequency */
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1045) if (scaling_down) {
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1046) ret = _set_opp_bw(opp_table, opp, dev);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1047) if (ret) {
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1048) dev_err(dev, "Failed to set bw: %d\n", ret);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1049) return ret;
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1050) }
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1051)
2c59138c22f17 drivers/opp/core.c (Stephan Gerhold 2020-07-30 10:01:45 +0200 1052) ret = _set_required_opps(dev, opp_table, opp, false);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1053) if (ret) {
ca1b5d77b1c69 drivers/opp/core.c (Viresh Kumar 2018-06-14 10:03:26 +0530 1054) dev_err(dev, "Failed to set required opps: %d\n", ret);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1055) return ret;
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1056) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1057) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1058)
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1059) opp_table->enabled = true;
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1060) dev_pm_opp_put(old_opp);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 1061)
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1062) /* Make sure current_opp doesn't get freed */
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1063) dev_pm_opp_get(opp);
870d5d963972d drivers/opp/core.c (Viresh Kumar 2021-01-28 15:30:00 +0530 1064) opp_table->current_opp = opp;
de04241ab87af drivers/opp/core.c (Jonathan Marek 2021-02-16 15:10:29 -0500 1065) opp_table->current_rate = freq;
fe2af40250bfc drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:23 +0300 1066)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1067) return ret;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1068) }
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1069)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1070) /**
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1071) * dev_pm_opp_set_rate() - Configure new OPP based on frequency
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1072) * @dev: device for which we do this operation
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1073) * @target_freq: frequency to achieve
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1074) *
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1075) * This configures the power-supplies to the levels specified by the OPP
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1076) * corresponding to the target_freq, and programs the clock to a value <=
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1077) * target_freq, as rounded by clk_round_rate(). Device wanting to run at fmax
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1078) * provided by the opp, should have already rounded to the target OPP's
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1079) * frequency.
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1080) */
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1081) int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1082) {
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1083) struct opp_table *opp_table;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1084) unsigned long freq = 0, temp_freq;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1085) struct dev_pm_opp *opp = NULL;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1086) int ret;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1087)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1088) opp_table = _find_opp_table(dev);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1089) if (IS_ERR(opp_table)) {
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1090) dev_err(dev, "%s: device's opp table doesn't exist\n", __func__);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1091) return PTR_ERR(opp_table);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1092) }
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1093)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1094) if (target_freq) {
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1095) /*
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1096) * For IO devices which require an OPP on some platforms/SoCs
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1097) * while just needing to scale the clock on some others
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1098) * we look for empty OPP tables with just a clock handle and
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1099) * scale only the clk. This makes dev_pm_opp_set_rate()
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1100) * equivalent to a clk_set_rate()
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1101) */
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1102) if (!_get_opp_count(opp_table)) {
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1103) ret = _generic_set_opp_clk_only(dev, opp_table->clk, target_freq);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1104) goto put_opp_table;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1105) }
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1106)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1107) freq = clk_round_rate(opp_table->clk, target_freq);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1108) if ((long)freq <= 0)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1109) freq = target_freq;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1110)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1111) /*
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1112) * The clock driver may support finer resolution of the
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1113) * frequencies than the OPP table, don't update the frequency we
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1114) * pass to clk_set_rate() here.
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1115) */
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1116) temp_freq = freq;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1117) opp = _find_freq_ceil(opp_table, &temp_freq);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1118) if (IS_ERR(opp)) {
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1119) ret = PTR_ERR(opp);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1120) dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n",
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1121) __func__, freq, ret);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1122) goto put_opp_table;
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1123) }
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1124) }
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1125)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1126) ret = _set_opp(dev, opp_table, opp, freq);
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1127)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1128) if (target_freq)
386ba854d9f31 drivers/opp/core.c (Viresh Kumar 2021-01-21 12:12:09 +0530 1129) dev_pm_opp_put(opp);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1130) put_opp_table:
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1131) dev_pm_opp_put_opp_table(opp_table);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1132) return ret;
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 1133) }
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 1134) EXPORT_SYMBOL_GPL(dev_pm_opp_set_rate);
6a0712f6f199e drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:39 +0530 1135)
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1136) /**
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1137) * dev_pm_opp_set_opp() - Configure device for OPP
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1138) * @dev: device for which we do this operation
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1139) * @opp: OPP to set to
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1140) *
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1141) * This configures the device based on the properties of the OPP passed to this
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1142) * routine.
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1143) *
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1144) * Return: 0 on success, a negative error number otherwise.
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1145) */
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1146) int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp)
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1147) {
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1148) struct opp_table *opp_table;
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1149) int ret;
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1150)
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1151) opp_table = _find_opp_table(dev);
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1152) if (IS_ERR(opp_table)) {
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1153) dev_err(dev, "%s: device opp doesn't exist\n", __func__);
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1154) return PTR_ERR(opp_table);
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1155) }
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1156)
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1157) ret = _set_opp(dev, opp_table, opp, opp ? opp->rate : 0);
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1158) dev_pm_opp_put_opp_table(opp_table);
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1159)
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1160) return ret;
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1161) }
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1162) EXPORT_SYMBOL_GPL(dev_pm_opp_set_opp);
abbe348340c7d drivers/opp/core.c (Viresh Kumar 2021-01-21 12:15:36 +0530 1163)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1164) /* OPP-dev Helpers */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1165) static void _remove_opp_dev(struct opp_device *opp_dev,
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1166) struct opp_table *opp_table)
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1167) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1168) opp_debug_unregister(opp_dev, opp_table);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1169) list_del(&opp_dev->node);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1170) kfree(opp_dev);
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1171) }
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1172)
ef43f01ac0697 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:12:27 +0530 1173) struct opp_device *_add_opp_dev(const struct device *dev,
ef43f01ac0697 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:12:27 +0530 1174) struct opp_table *opp_table)
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1175) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1176) struct opp_device *opp_dev;
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1177)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1178) opp_dev = kzalloc(sizeof(*opp_dev), GFP_KERNEL);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1179) if (!opp_dev)
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1180) return NULL;
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1181)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1182) /* Initialize opp-dev */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1183) opp_dev->dev = dev;
3d2556992a878 drivers/opp/core.c (Viresh Kumar 2018-08-03 07:05:21 +0530 1184)
ef43f01ac0697 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:12:27 +0530 1185) mutex_lock(&opp_table->lock);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1186) list_add(&opp_dev->node, &opp_table->dev_list);
ef43f01ac0697 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:12:27 +0530 1187) mutex_unlock(&opp_table->lock);
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1188)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1189) /* Create debugfs entries for the opp_table */
a2dea4cb90702 drivers/opp/core.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 1190) opp_debug_register(opp_dev, opp_table);
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1191)
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1192) return opp_dev;
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1193) }
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1194)
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1195) static struct opp_table *_allocate_opp_table(struct device *dev, int index)
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1196) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1197) struct opp_table *opp_table;
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1198) struct opp_device *opp_dev;
d54974c2513f4 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:38 +0530 1199) int ret;
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1200)
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1201) /*
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1202) * Allocate a new OPP table. In the infrequent case where a new
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1203) * device is needed to be added, we pay this penalty.
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1204) */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1205) opp_table = kzalloc(sizeof(*opp_table), GFP_KERNEL);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1206) if (!opp_table)
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1207) return ERR_PTR(-ENOMEM);
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1208)
3d2556992a878 drivers/opp/core.c (Viresh Kumar 2018-08-03 07:05:21 +0530 1209) mutex_init(&opp_table->lock);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 1210) mutex_init(&opp_table->genpd_virt_dev_lock);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1211) INIT_LIST_HEAD(&opp_table->dev_list);
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1212) INIT_LIST_HEAD(&opp_table->lazy);
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1213)
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 1214) /* Mark regulator count uninitialized */
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 1215) opp_table->regulator_count = -1;
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 1216)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1217) opp_dev = _add_opp_dev(dev, opp_table);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1218) if (!opp_dev) {
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1219) ret = -ENOMEM;
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1220) goto err;
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1221) }
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1222)
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1223) _of_init_opp_table(opp_table, dev, index);
50f8cfbd5897c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:37 +0530 1224)
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1225) /* Find interconnect path(s) for the device */
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1226) ret = dev_pm_opp_of_find_icc_paths(dev, opp_table);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1227) if (ret) {
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1228) if (ret == -EPROBE_DEFER)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1229) goto remove_opp_dev;
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1230)
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1231) dev_warn(dev, "%s: Error finding interconnect paths: %d\n",
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1232) __func__, ret);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1233) }
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1234)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1235) BLOCKING_INIT_NOTIFIER_HEAD(&opp_table->head);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1236) INIT_LIST_HEAD(&opp_table->opp_list);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1237) kref_init(&opp_table->kref);
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1238)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1239) return opp_table;
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1240)
976509bb310b9 drivers/opp/core.c (Quanyang Wang 2020-12-24 18:49:27 +0800 1241) remove_opp_dev:
976509bb310b9 drivers/opp/core.c (Quanyang Wang 2020-12-24 18:49:27 +0800 1242) _remove_opp_dev(opp_dev, opp_table);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1243) err:
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1244) kfree(opp_table);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1245) return ERR_PTR(ret);
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1246) }
07cce74a7b259 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:34 +0530 1247)
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1248) void _get_opp_table_kref(struct opp_table *opp_table)
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1249) {
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1250) kref_get(&opp_table->kref);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1251) }
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1252)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1253) static struct opp_table *_update_opp_table_clk(struct device *dev,
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1254) struct opp_table *opp_table,
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1255) bool getclk)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1256) {
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1257) int ret;
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1258)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1259) /*
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1260) * Return early if we don't need to get clk or we have already tried it
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1261) * earlier.
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1262) */
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1263) if (!getclk || IS_ERR(opp_table) || opp_table->clk)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1264) return opp_table;
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1265)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1266) /* Find clk for the device */
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1267) opp_table->clk = clk_get(dev, NULL);
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1268)
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1269) ret = PTR_ERR_OR_ZERO(opp_table->clk);
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1270) if (!ret)
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1271) return opp_table;
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1272)
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1273) if (ret == -ENOENT) {
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1274) dev_dbg(dev, "%s: Couldn't find clock: %d\n", __func__, ret);
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1275) return opp_table;
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1276) }
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1277)
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1278) dev_pm_opp_put_opp_table(opp_table);
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1279) dev_err_probe(dev, ret, "Couldn't find clock\n");
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1280)
d4a4c7a41153d drivers/opp/core.c (Viresh Kumar 2021-01-29 16:12:04 +0530 1281) return ERR_PTR(ret);
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1282) }
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1283)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1284) /*
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1285) * We need to make sure that the OPP table for a device doesn't get added twice,
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1286) * if this routine gets called in parallel with the same device pointer.
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1287) *
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1288) * The simplest way to enforce that is to perform everything (find existing
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1289) * table and if not found, create a new one) under the opp_table_lock, so only
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1290) * one creator gets access to the same. But that expands the critical section
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1291) * under the lock and may end up causing circular dependencies with frameworks
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1292) * like debugfs, interconnect or clock framework as they may be direct or
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1293) * indirect users of OPP core.
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1294) *
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1295) * And for that reason we have to go for a bit tricky implementation here, which
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1296) * uses the opp_tables_busy flag to indicate if another creator is in the middle
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1297) * of adding an OPP table and others should wait for it to finish.
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1298) */
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1299) struct opp_table *_add_opp_table_indexed(struct device *dev, int index,
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1300) bool getclk)
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1301) {
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1302) struct opp_table *opp_table;
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1303)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1304) again:
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1305) mutex_lock(&opp_table_lock);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1306)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1307) opp_table = _find_opp_table_unlocked(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1308) if (!IS_ERR(opp_table))
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1309) goto unlock;
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1310)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1311) /*
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1312) * The opp_tables list or an OPP table's dev_list is getting updated by
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1313) * another user, wait for it to finish.
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1314) */
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1315) if (unlikely(opp_tables_busy)) {
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1316) mutex_unlock(&opp_table_lock);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1317) cpu_relax();
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1318) goto again;
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1319) }
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1320)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1321) opp_tables_busy = true;
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1322) opp_table = _managed_opp(dev, index);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1323)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1324) /* Drop the lock to reduce the size of critical section */
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1325) mutex_unlock(&opp_table_lock);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1326)
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1327) if (opp_table) {
ef43f01ac0697 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:12:27 +0530 1328) if (!_add_opp_dev(dev, opp_table)) {
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1329) dev_pm_opp_put_opp_table(opp_table);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1330) opp_table = ERR_PTR(-ENOMEM);
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1331) }
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1332)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1333) mutex_lock(&opp_table_lock);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1334) } else {
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1335) opp_table = _allocate_opp_table(dev, index);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1336)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1337) mutex_lock(&opp_table_lock);
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1338) if (!IS_ERR(opp_table))
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1339) list_add(&opp_table->node, &opp_tables);
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1340) }
283d55e68d8a0 drivers/opp/core.c (Viresh Kumar 2018-09-07 09:01:54 +0530 1341)
27c09484dd3d8 drivers/opp/core.c (Viresh Kumar 2020-10-27 16:53:21 +0530 1342) opp_tables_busy = false;
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1343)
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1344) unlock:
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1345) mutex_unlock(&opp_table_lock);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1346)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1347) return _update_opp_table_clk(dev, opp_table, getclk);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1348) }
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1349)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1350) static struct opp_table *_add_opp_table(struct device *dev, bool getclk)
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1351) {
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1352) return _add_opp_table_indexed(dev, 0, getclk);
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1353) }
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1354)
e77dcb0b732dd drivers/opp/core.c (Viresh Kumar 2020-11-06 10:37:16 +0530 1355) struct opp_table *dev_pm_opp_get_opp_table(struct device *dev)
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1356) {
e77dcb0b732dd drivers/opp/core.c (Viresh Kumar 2020-11-06 10:37:16 +0530 1357) return _find_opp_table(dev);
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1358) }
e77dcb0b732dd drivers/opp/core.c (Viresh Kumar 2020-11-06 10:37:16 +0530 1359) EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_table);
eb7c8743d6cf4 drivers/opp/core.c (Viresh Kumar 2018-09-05 16:17:14 +0530 1360)
b83c1899a0e98 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:45 +0530 1361) static void _opp_table_kref_release(struct kref *kref)
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1362) {
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1363) struct opp_table *opp_table = container_of(kref, struct opp_table, kref);
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1364) struct opp_device *opp_dev, *temp;
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1365) int i;
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1366)
e0df59de670b4 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:26:08 +0530 1367) /* Drop the lock as soon as we can */
e0df59de670b4 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:26:08 +0530 1368) list_del(&opp_table->node);
e0df59de670b4 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:26:08 +0530 1369) mutex_unlock(&opp_table_lock);
e0df59de670b4 drivers/opp/core.c (Viresh Kumar 2020-10-22 12:26:08 +0530 1370)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 1371) if (opp_table->current_opp)
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 1372) dev_pm_opp_put(opp_table->current_opp);
81c4d8a3c4148 drivers/opp/core.c (Viresh Kumar 2021-01-20 16:16:48 +0530 1373)
5d6d106fa4550 drivers/opp/core.c (Viresh Kumar 2018-06-07 14:50:43 +0530 1374) _of_clear_opp_table(opp_table);
5d6d106fa4550 drivers/opp/core.c (Viresh Kumar 2018-06-07 14:50:43 +0530 1375)
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1376) /* Release clk */
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1377) if (!IS_ERR(opp_table->clk))
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1378) clk_put(opp_table->clk);
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1379)
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1380) if (opp_table->paths) {
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1381) for (i = 0; i < opp_table->path_count; i++)
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1382) icc_put(opp_table->paths[i]);
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1383) kfree(opp_table->paths);
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1384) }
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1385)
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1386) WARN_ON(!list_empty(&opp_table->opp_list));
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1387)
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1388) list_for_each_entry_safe(opp_dev, temp, &opp_table->dev_list, node) {
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1389) /*
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1390) * The OPP table is getting removed, drop the performance state
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1391) * constraints.
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1392) */
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1393) if (opp_table->genpd_performance_state)
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1394) dev_pm_genpd_set_performance_state((struct device *)(opp_dev->dev), 0);
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1395)
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1396) _remove_opp_dev(opp_dev, opp_table);
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 1397) }
b6160e26936bc drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:04 +0530 1398)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 1399) mutex_destroy(&opp_table->genpd_virt_dev_lock);
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1400) mutex_destroy(&opp_table->lock);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1401) kfree(opp_table);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1402) }
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1403)
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1404) void dev_pm_opp_put_opp_table(struct opp_table *opp_table)
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1405) {
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1406) kref_put_mutex(&opp_table->kref, _opp_table_kref_release,
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1407) &opp_table_lock);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1408) }
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1409) EXPORT_SYMBOL_GPL(dev_pm_opp_put_opp_table);
f067a982cefa8 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:42 +0530 1410)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1411) void _opp_free(struct dev_pm_opp *opp)
969fceb3c7e6f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:59 +0530 1412) {
969fceb3c7e6f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:59 +0530 1413) kfree(opp);
969fceb3c7e6f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:59 +0530 1414) }
969fceb3c7e6f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:59 +0530 1415)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1416) static void _opp_kref_release(struct kref *kref)
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1417) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1418) struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1419) struct opp_table *opp_table = opp->opp_table;
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1420)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1421) list_del(&opp->node);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1422) mutex_unlock(&opp_table->lock);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1423)
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1424) /*
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1425) * Notify the changes in the availability of the operable
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1426) * frequency/voltage list.
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1427) */
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1428) blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp);
da544b61eb554 drivers/opp/core.c (Viresh Kumar 2018-06-07 14:50:43 +0530 1429) _of_opp_free_required_opps(opp_table, opp);
deaa51465105a drivers/base/power/opp/core.c (Viresh Kumar 2015-11-11 07:59:01 +0530 1430) opp_debug_remove_one(opp);
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1431) kfree(opp);
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1432) }
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1433)
a88bd2a51e901 drivers/opp/core.c (Viresh Kumar 2017-11-29 15:18:36 +0530 1434) void dev_pm_opp_get(struct dev_pm_opp *opp)
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 1435) {
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 1436) kref_get(&opp->kref);
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 1437) }
8a31d9d94297b drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:47 +0530 1438)
7034764a1e4a6 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:46 +0530 1439) void dev_pm_opp_put(struct dev_pm_opp *opp)
7034764a1e4a6 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:46 +0530 1440) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1441) kref_put_mutex(&opp->kref, _opp_kref_release, &opp->opp_table->lock);
7034764a1e4a6 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:46 +0530 1442) }
7034764a1e4a6 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:46 +0530 1443) EXPORT_SYMBOL_GPL(dev_pm_opp_put);
7034764a1e4a6 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:46 +0530 1444)
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1445) /**
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1446) * dev_pm_opp_remove() - Remove an OPP from OPP table
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1447) * @dev: device for which we do this operation
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1448) * @freq: OPP to remove with matching 'freq'
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1449) *
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1450) * This function removes an opp from the opp table.
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1451) */
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1452) void dev_pm_opp_remove(struct device *dev, unsigned long freq)
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1453) {
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1454) struct dev_pm_opp *opp;
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1455) struct opp_table *opp_table;
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1456) bool found = false;
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1457)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1458) opp_table = _find_opp_table(dev);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1459) if (IS_ERR(opp_table))
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1460) return;
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1461)
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1462) mutex_lock(&opp_table->lock);
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1463)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1464) list_for_each_entry(opp, &opp_table->opp_list, node) {
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1465) if (opp->rate == freq) {
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1466) found = true;
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1467) break;
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1468) }
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1469) }
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1470)
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1471) mutex_unlock(&opp_table->lock);
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1472)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1473) if (found) {
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1474) dev_pm_opp_put(opp);
0ad8c623907c2 drivers/opp/core.c (Viresh Kumar 2018-08-02 14:23:09 +0530 1475)
0ad8c623907c2 drivers/opp/core.c (Viresh Kumar 2018-08-02 14:23:09 +0530 1476) /* Drop the reference taken by dev_pm_opp_add() */
0ad8c623907c2 drivers/opp/core.c (Viresh Kumar 2018-08-02 14:23:09 +0530 1477) dev_pm_opp_put_opp_table(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1478) } else {
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1479) dev_warn(dev, "%s: Couldn't find OPP with freq: %lu\n",
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1480) __func__, freq);
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1481) }
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1482)
0ad8c623907c2 drivers/opp/core.c (Viresh Kumar 2018-08-02 14:23:09 +0530 1483) /* Drop the reference taken by _find_opp_table() */
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 1484) dev_pm_opp_put_opp_table(opp_table);
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1485) }
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1486) EXPORT_SYMBOL_GPL(dev_pm_opp_remove);
129eec55df6ab drivers/base/power/opp.c (Viresh Kumar 2014-11-27 08:54:06 +0530 1487)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1488) static struct dev_pm_opp *_opp_get_next(struct opp_table *opp_table,
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1489) bool dynamic)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1490) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1491) struct dev_pm_opp *opp = NULL, *temp;
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1492)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1493) mutex_lock(&opp_table->lock);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1494) list_for_each_entry(temp, &opp_table->opp_list, node) {
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1495) /*
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1496) * Refcount must be dropped only once for each OPP by OPP core,
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1497) * do that with help of "removed" flag.
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1498) */
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1499) if (!temp->removed && dynamic == temp->dynamic) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1500) opp = temp;
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1501) break;
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1502) }
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1503) }
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1504)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1505) mutex_unlock(&opp_table->lock);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1506) return opp;
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1507) }
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1508)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1509) /*
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1510) * Can't call dev_pm_opp_put() from under the lock as debugfs removal needs to
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1511) * happen lock less to avoid circular dependency issues. This routine must be
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1512) * called without the opp_table->lock held.
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1513) */
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1514) static void _opp_remove_all(struct opp_table *opp_table, bool dynamic)
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1515) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1516) struct dev_pm_opp *opp;
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1517)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1518) while ((opp = _opp_get_next(opp_table, dynamic))) {
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1519) opp->removed = true;
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1520) dev_pm_opp_put(opp);
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1521)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1522) /* Drop the references taken by dev_pm_opp_add() */
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1523) if (dynamic)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1524) dev_pm_opp_put_opp_table(opp_table);
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1525) }
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1526) }
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1527)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1528) bool _opp_remove_all_static(struct opp_table *opp_table)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1529) {
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1530) mutex_lock(&opp_table->lock);
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1531)
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 1532) if (!opp_table->parsed_static_opps) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1533) mutex_unlock(&opp_table->lock);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1534) return false;
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 1535) }
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 1536)
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1537) if (--opp_table->parsed_static_opps) {
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1538) mutex_unlock(&opp_table->lock);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1539) return true;
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1540) }
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1541)
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1542) mutex_unlock(&opp_table->lock);
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 1543)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1544) _opp_remove_all(opp_table, false);
cf1fac943c634 drivers/opp/core.c (Viresh Kumar 2020-11-19 11:24:32 +0530 1545) return true;
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1546) }
03758d60265c7 drivers/opp/core.c (Viresh Kumar 2019-11-11 16:35:03 +0530 1547)
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1548) /**
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1549) * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1550) * @dev: device for which we do this operation
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1551) *
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1552) * This function removes all dynamically created OPPs from the opp table.
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1553) */
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1554) void dev_pm_opp_remove_all_dynamic(struct device *dev)
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1555) {
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1556) struct opp_table *opp_table;
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1557)
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1558) opp_table = _find_opp_table(dev);
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1559) if (IS_ERR(opp_table))
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1560) return;
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1561)
606a5d4227e46 drivers/opp/core.c (Beata Michalska 2021-03-04 15:07:34 +0000 1562) _opp_remove_all(opp_table, true);
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1563)
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1564) /* Drop the reference taken by _find_opp_table() */
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1565) dev_pm_opp_put_opp_table(opp_table);
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1566) }
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1567) EXPORT_SYMBOL_GPL(dev_pm_opp_remove_all_dynamic);
1690d8bb91e37 drivers/opp/core.c (Viresh Kumar 2019-01-04 15:14:33 +0530 1568)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1569) struct dev_pm_opp *_opp_allocate(struct opp_table *table)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1570) {
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1571) struct dev_pm_opp *opp;
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1572) int supply_count, supply_size, icc_size;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1573)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1574) /* Allocate space for at least one supply */
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1575) supply_count = table->regulator_count > 0 ? table->regulator_count : 1;
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1576) supply_size = sizeof(*opp->supplies) * supply_count;
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1577) icc_size = sizeof(*opp->bandwidth) * table->path_count;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1578)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1579) /* allocate new OPP node and supplies structures */
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1580) opp = kzalloc(sizeof(*opp) + supply_size + icc_size, GFP_KERNEL);
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1581)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1582) if (!opp)
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1583) return NULL;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1584)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1585) /* Put the supplies at the end of the OPP structure as an empty array */
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1586) opp->supplies = (struct dev_pm_opp_supply *)(opp + 1);
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1587) if (icc_size)
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1588) opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->supplies + supply_count);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1589) INIT_LIST_HEAD(&opp->node);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1590)
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1591) return opp;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1592) }
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1593)
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1594) static bool _opp_supported_by_regulators(struct dev_pm_opp *opp,
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1595) struct opp_table *opp_table)
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1596) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1597) struct regulator *reg;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1598) int i;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1599)
90e3577b5feb4 drivers/opp/core.c (Viresh Kumar 2018-12-11 16:32:47 +0530 1600) if (!opp_table->regulators)
90e3577b5feb4 drivers/opp/core.c (Viresh Kumar 2018-12-11 16:32:47 +0530 1601) return true;
90e3577b5feb4 drivers/opp/core.c (Viresh Kumar 2018-12-11 16:32:47 +0530 1602)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1603) for (i = 0; i < opp_table->regulator_count; i++) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1604) reg = opp_table->regulators[i];
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1605)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1606) if (!regulator_is_supported_voltage(reg,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1607) opp->supplies[i].u_volt_min,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1608) opp->supplies[i].u_volt_max)) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1609) pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n",
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1610) __func__, opp->supplies[i].u_volt_min,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1611) opp->supplies[i].u_volt_max);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1612) return false;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1613) }
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1614) }
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1615)
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1616) return true;
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1617) }
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1618)
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1619) int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2)
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1620) {
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1621) if (opp1->rate != opp2->rate)
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1622) return opp1->rate < opp2->rate ? -1 : 1;
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1623) if (opp1->bandwidth && opp2->bandwidth &&
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1624) opp1->bandwidth[0].peak != opp2->bandwidth[0].peak)
6d3f922c46f2e drivers/opp/core.c (Georgi Djakov 2020-05-12 15:53:21 +0300 1625) return opp1->bandwidth[0].peak < opp2->bandwidth[0].peak ? -1 : 1;
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1626) if (opp1->level != opp2->level)
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1627) return opp1->level < opp2->level ? -1 : 1;
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1628) return 0;
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1629) }
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1630)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1631) static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp,
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1632) struct opp_table *opp_table,
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1633) struct list_head **head)
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1634) {
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1635) struct dev_pm_opp *opp;
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1636) int opp_cmp;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1637)
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1638) /*
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1639) * Insert new OPP in order of increasing frequency and discard if
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1640) * already present.
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1641) *
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1642) * Need to use &opp_table->opp_list in the condition part of the 'for'
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1643) * loop, don't replace it with head otherwise it will become an infinite
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1644) * loop.
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1645) */
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1646) list_for_each_entry(opp, &opp_table->opp_list, node) {
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1647) opp_cmp = _opp_compare_key(new_opp, opp);
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1648) if (opp_cmp > 0) {
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1649) *head = &opp->node;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1650) continue;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1651) }
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1652)
6c591eec67cbb drivers/opp/core.c (Saravana Kannan 2020-05-12 15:53:19 +0300 1653) if (opp_cmp < 0)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1654) return 0;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1655)
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1656) /* Duplicate OPPs */
064416586190c drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:04 +0530 1657) dev_warn(dev, "%s: duplicate OPPs detected. Existing: freq: %lu, volt: %lu, enabled: %d. New: freq: %lu, volt: %lu, enabled: %d\n",
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1658) __func__, opp->rate, opp->supplies[0].u_volt,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1659) opp->available, new_opp->rate,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1660) new_opp->supplies[0].u_volt, new_opp->available);
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1661)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1662) /* Should we compare voltages for all regulators here ? */
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1663) return opp->available &&
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1664) new_opp->supplies[0].u_volt == opp->supplies[0].u_volt ? -EBUSY : -EEXIST;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1665) }
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1666)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1667) return 0;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1668) }
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1669)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1670) void _required_opps_available(struct dev_pm_opp *opp, int count)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1671) {
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1672) int i;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1673)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1674) for (i = 0; i < count; i++) {
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1675) if (opp->required_opps[i]->available)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1676) continue;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1677)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1678) opp->available = false;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1679) pr_warn("%s: OPP not supported by required OPP %pOF (%lu)\n",
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1680) __func__, opp->required_opps[i]->np, opp->rate);
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1681) return;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1682) }
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1683) }
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1684)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1685) /*
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1686) * Returns:
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1687) * 0: On success. And appropriate error message for duplicate OPPs.
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1688) * -EBUSY: For OPP with same freq/volt and is available. The callers of
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1689) * _opp_add() must return 0 if they receive -EBUSY from it. This is to make
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1690) * sure we don't print error messages unnecessarily if different parts of
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1691) * kernel try to initialize the OPP table.
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1692) * -EEXIST: For OPP with same freq but different volt or is unavailable. This
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1693) * should be considered an error by the callers of _opp_add().
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1694) */
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1695) int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1696) struct opp_table *opp_table, bool rate_not_available)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1697) {
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1698) struct list_head *head;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1699) int ret;
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1700)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1701) mutex_lock(&opp_table->lock);
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1702) head = &opp_table->opp_list;
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1703)
32715be4fe95f drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:13 +0300 1704) ret = _opp_is_duplicate(dev, new_opp, opp_table, &head);
32715be4fe95f drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:13 +0300 1705) if (ret) {
32715be4fe95f drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:13 +0300 1706) mutex_unlock(&opp_table->lock);
32715be4fe95f drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:13 +0300 1707) return ret;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1708) }
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1709)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1710) list_add(&new_opp->node, head);
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1711) mutex_unlock(&opp_table->lock);
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1712)
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 1713) new_opp->opp_table = opp_table;
7034764a1e4a6 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:46 +0530 1714) kref_init(&new_opp->kref);
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1715)
a2dea4cb90702 drivers/opp/core.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 1716) opp_debug_create_one(new_opp, opp_table);
deaa51465105a drivers/base/power/opp/core.c (Viresh Kumar 2015-11-11 07:59:01 +0530 1717)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1718) if (!_opp_supported_by_regulators(new_opp, opp_table)) {
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1719) new_opp->available = false;
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1720) dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n",
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1721) __func__, new_opp->rate);
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1722) }
7d34d56ef3349 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:34 +0530 1723)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1724) /* required-opps not fully initialized yet */
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1725) if (lazy_linking_pending(opp_table))
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1726) return 0;
cf65948d62c6a drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:14 +0300 1727)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 1728) _required_opps_available(new_opp, opp_table->required_opp_count);
cf65948d62c6a drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:14 +0300 1729)
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1730) return 0;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1731) }
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1732)
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1733) /**
b64b9c3f900a0 drivers/base/power/opp/core.c (Viresh Kumar 2015-10-15 21:42:44 +0530 1734) * _opp_add_v1() - Allocate a OPP based on v1 bindings.
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1735) * @opp_table: OPP table
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1736) * @dev: device for which we do this operation
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1737) * @freq: Frequency in Hz for this OPP
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1738) * @u_volt: Voltage in uVolts for this OPP
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1739) * @dynamic: Dynamically added OPPs.
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1740) *
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1741) * This function adds an opp definition to the opp table and returns status.
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1742) * The opp is made available by default and it can be controlled using
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1743) * dev_pm_opp_enable/disable functions and may be removed by dev_pm_opp_remove.
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1744) *
8f8d37b2537a2 drivers/base/power/opp.c (Viresh Kumar 2015-09-04 13:47:24 +0530 1745) * NOTE: "dynamic" parameter impacts OPPs added by the dev_pm_opp_of_add_table
8f8d37b2537a2 drivers/base/power/opp.c (Viresh Kumar 2015-09-04 13:47:24 +0530 1746) * and freed by dev_pm_opp_of_remove_table.
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1747) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1748) * Return:
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1749) * 0 On success OR
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1750) * Duplicate OPPs (both freq and volt are same) and opp->available
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1751) * -EEXIST Freq are same and volt are different OR
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1752) * Duplicate OPPs (both freq and volt are same) and !opp->available
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1753) * -ENOMEM Memory allocation failure
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 1754) */
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1755) int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1756) unsigned long freq, long u_volt, bool dynamic)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1757) {
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1758) struct dev_pm_opp *new_opp;
50f8cfbd5897c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:37 +0530 1759) unsigned long tol;
6ce4184d03088 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:35 +0530 1760) int ret;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1761)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1762) new_opp = _opp_allocate(opp_table);
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1763) if (!new_opp)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1764) return -ENOMEM;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1765)
a7470db6fec48 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:17 +0530 1766) /* populate the opp table */
a7470db6fec48 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:17 +0530 1767) new_opp->rate = freq;
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1768) tol = u_volt * opp_table->voltage_tolerance_v1 / 100;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1769) new_opp->supplies[0].u_volt = u_volt;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1770) new_opp->supplies[0].u_volt_min = u_volt - tol;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1771) new_opp->supplies[0].u_volt_max = u_volt + tol;
a7470db6fec48 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:17 +0530 1772) new_opp->available = true;
23dacf6d2e993 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:23:01 +0530 1773) new_opp->dynamic = dynamic;
a7470db6fec48 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:17 +0530 1774)
a1e8c13600bfd drivers/opp/core.c (Viresh Kumar 2018-04-06 14:35:45 +0530 1775) ret = _opp_add(dev, new_opp, opp_table, false);
7f8538ebaefc0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:55 +0530 1776) if (ret) {
7f8538ebaefc0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:55 +0530 1777) /* Don't return error for duplicate OPPs */
7f8538ebaefc0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:55 +0530 1778) if (ret == -EBUSY)
7f8538ebaefc0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:55 +0530 1779) ret = 0;
6ce4184d03088 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:35 +0530 1780) goto free_opp;
7f8538ebaefc0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:40:55 +0530 1781) }
64ce854578de8 drivers/base/power/opp.c (Chander Kashyap 2014-05-22 10:36:26 +0530 1782)
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 1783) /*
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 1784) * Notify the changes in the availability of the operable
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 1785) * frequency/voltage list.
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 1786) */
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 1787) blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADD, new_opp);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1788) return 0;
6ce4184d03088 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:35 +0530 1789)
6ce4184d03088 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:35 +0530 1790) free_opp:
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1791) _opp_free(new_opp);
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 1792)
6ce4184d03088 drivers/base/power/opp.c (Viresh Kumar 2014-12-10 09:45:35 +0530 1793) return ret;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 1794) }
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 1795)
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1796) /**
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1797) * dev_pm_opp_set_supported_hw() - Set supported platforms
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1798) * @dev: Device for which supported-hw has to be set.
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1799) * @versions: Array of hierarchy of versions to match.
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1800) * @count: Number of elements in the array.
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1801) *
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1802) * This is required only for the V2 bindings, and it enables a platform to
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1803) * specify the hierarchy of versions it supports. OPP layer will then enable
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1804) * OPPs, which are available for those versions, based on its 'opp-supported-hw'
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1805) * property.
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1806) */
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1807) struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1808) const u32 *versions, unsigned int count)
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1809) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1810) struct opp_table *opp_table;
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1811)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1812) opp_table = _add_opp_table(dev, false);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1813) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1814) return opp_table;
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1815)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1816) /* Make sure there are no concurrent readers while updating opp_table */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1817) WARN_ON(!list_empty(&opp_table->opp_list));
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1818)
25419de1b8dda drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1819) /* Another CPU that shares the OPP table has set the property ? */
25419de1b8dda drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1820) if (opp_table->supported_hw)
25419de1b8dda drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1821) return opp_table;
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1822)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1823) opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions),
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1824) GFP_KERNEL);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1825) if (!opp_table->supported_hw) {
25419de1b8dda drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1826) dev_pm_opp_put_opp_table(opp_table);
25419de1b8dda drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1827) return ERR_PTR(-ENOMEM);
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1828) }
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1829)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1830) opp_table->supported_hw_count = count;
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1831)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1832) return opp_table;
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1833) }
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1834) EXPORT_SYMBOL_GPL(dev_pm_opp_set_supported_hw);
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1835)
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1836) /**
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1837) * dev_pm_opp_put_supported_hw() - Releases resources blocked for supported hw
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1838) * @opp_table: OPP table returned by dev_pm_opp_set_supported_hw().
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1839) *
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1840) * This is required only for the V2 bindings, and is called for a matching
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1841) * dev_pm_opp_set_supported_hw(). Until this is called, the opp_table structure
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1842) * will not be freed.
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1843) */
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1844) void dev_pm_opp_put_supported_hw(struct opp_table *opp_table)
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1845) {
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 1846) if (unlikely(!opp_table))
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 1847) return;
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 1848)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1849) kfree(opp_table->supported_hw);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1850) opp_table->supported_hw = NULL;
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1851) opp_table->supported_hw_count = 0;
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1852)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1853) dev_pm_opp_put_opp_table(opp_table);
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1854) }
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1855) EXPORT_SYMBOL_GPL(dev_pm_opp_put_supported_hw);
7de36b0aa51a5 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:46 +0530 1856)
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1857) static void devm_pm_opp_supported_hw_release(void *data)
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1858) {
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1859) dev_pm_opp_put_supported_hw(data);
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1860) }
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1861)
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1862) /**
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1863) * devm_pm_opp_set_supported_hw() - Set supported platforms
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1864) * @dev: Device for which supported-hw has to be set.
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1865) * @versions: Array of hierarchy of versions to match.
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1866) * @count: Number of elements in the array.
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1867) *
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1868) * This is a resource-managed variant of dev_pm_opp_set_supported_hw().
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1869) *
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1870) * Return: 0 on success and errorno otherwise.
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1871) */
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1872) int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1873) unsigned int count)
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1874) {
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1875) struct opp_table *opp_table;
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1876)
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1877) opp_table = dev_pm_opp_set_supported_hw(dev, versions, count);
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1878) if (IS_ERR(opp_table))
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1879) return PTR_ERR(opp_table);
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1880)
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1881) return devm_add_action_or_reset(dev, devm_pm_opp_supported_hw_release,
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1882) opp_table);
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1883) }
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1884) EXPORT_SYMBOL_GPL(devm_pm_opp_set_supported_hw);
9c4f220f3dc26 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:56 +0300 1885)
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1886) /**
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1887) * dev_pm_opp_set_prop_name() - Set prop-extn name
a5da64477ee79 drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:52 +0530 1888) * @dev: Device for which the prop-name has to be set.
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1889) * @name: name to postfix to properties.
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1890) *
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1891) * This is required only for the V2 bindings, and it enables a platform to
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1892) * specify the extn to be used for certain property names. The properties to
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1893) * which the extension will apply are opp-microvolt and opp-microamp. OPP core
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1894) * should postfix the property name with -<name> while looking for them.
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1895) */
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1896) struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1897) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1898) struct opp_table *opp_table;
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1899)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1900) opp_table = _add_opp_table(dev, false);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1901) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1902) return opp_table;
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1903)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1904) /* Make sure there are no concurrent readers while updating opp_table */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1905) WARN_ON(!list_empty(&opp_table->opp_list));
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1906)
878ec1a9f0e5a drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1907) /* Another CPU that shares the OPP table has set the property ? */
878ec1a9f0e5a drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1908) if (opp_table->prop_name)
878ec1a9f0e5a drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1909) return opp_table;
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1910)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1911) opp_table->prop_name = kstrdup(name, GFP_KERNEL);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1912) if (!opp_table->prop_name) {
878ec1a9f0e5a drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1913) dev_pm_opp_put_opp_table(opp_table);
878ec1a9f0e5a drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1914) return ERR_PTR(-ENOMEM);
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1915) }
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1916)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1917) return opp_table;
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1918) }
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1919) EXPORT_SYMBOL_GPL(dev_pm_opp_set_prop_name);
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1920)
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1921) /**
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1922) * dev_pm_opp_put_prop_name() - Releases resources blocked for prop-name
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1923) * @opp_table: OPP table returned by dev_pm_opp_set_prop_name().
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1924) *
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1925) * This is required only for the V2 bindings, and is called for a matching
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1926) * dev_pm_opp_set_prop_name(). Until this is called, the opp_table structure
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1927) * will not be freed.
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1928) */
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1929) void dev_pm_opp_put_prop_name(struct opp_table *opp_table)
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1930) {
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 1931) if (unlikely(!opp_table))
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 1932) return;
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 1933)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1934) kfree(opp_table->prop_name);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1935) opp_table->prop_name = NULL;
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1936)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 1937) dev_pm_opp_put_opp_table(opp_table);
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1938) }
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1939) EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
01fb4d3c39d35 drivers/base/power/opp/core.c (Viresh Kumar 2015-12-09 08:01:47 +0530 1940)
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1941) /**
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1942) * dev_pm_opp_set_regulators() - Set regulator names for the device
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1943) * @dev: Device for which regulator name is being set.
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1944) * @names: Array of pointers to the names of the regulator.
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1945) * @count: Number of regulators.
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1946) *
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1947) * In order to support OPP switching, OPP layer needs to know the name of the
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1948) * device's regulators, as the core would be required to switch voltages as
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1949) * well.
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1950) *
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1951) * This must be called before any OPPs are initialized for the device.
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1952) */
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1953) struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1954) const char * const names[],
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1955) unsigned int count)
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1956) {
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 1957) struct dev_pm_opp_supply *supplies;
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1958) struct opp_table *opp_table;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1959) struct regulator *reg;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1960) int ret, i;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1961)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 1962) opp_table = _add_opp_table(dev, false);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1963) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 1964) return opp_table;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1965)
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1966) /* This should be called before OPPs are initialized */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 1967) if (WARN_ON(!list_empty(&opp_table->opp_list))) {
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1968) ret = -EBUSY;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1969) goto err;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1970) }
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1971)
779b783cfaa72 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1972) /* Another CPU that shares the OPP table has set the regulators ? */
779b783cfaa72 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1973) if (opp_table->regulators)
779b783cfaa72 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 1974) return opp_table;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1975)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1976) opp_table->regulators = kmalloc_array(count,
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1977) sizeof(*opp_table->regulators),
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1978) GFP_KERNEL);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1979) if (!opp_table->regulators) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1980) ret = -ENOMEM;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1981) goto err;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1982) }
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1983)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1984) for (i = 0; i < count; i++) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1985) reg = regulator_get_optional(dev, names[i]);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1986) if (IS_ERR(reg)) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1987) ret = PTR_ERR(reg);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1988) if (ret != -EPROBE_DEFER)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1989) dev_err(dev, "%s: no regulator (%s) found: %d\n",
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1990) __func__, names[i], ret);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1991) goto free_regulators;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1992) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1993)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1994) opp_table->regulators[i] = reg;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1995) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1996)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 1997) opp_table->regulator_count = count;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 1998)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 1999) supplies = kmalloc_array(count * 2, sizeof(*supplies), GFP_KERNEL);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2000) if (!supplies) {
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2001) ret = -ENOMEM;
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 2002) goto free_regulators;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2003) }
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2004)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2005) mutex_lock(&opp_table->lock);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2006) opp_table->sod_supplies = supplies;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2007) if (opp_table->set_opp_data) {
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2008) opp_table->set_opp_data->old_opp.supplies = supplies;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2009) opp_table->set_opp_data->new_opp.supplies = supplies + count;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2010) }
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2011) mutex_unlock(&opp_table->lock);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 2012)
91291d9ad92fa drivers/base/power/opp/core.c (Stephen Boyd 2016-11-30 16:21:25 +0530 2013) return opp_table;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2014)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2015) free_regulators:
24957db100435 drivers/opp/core.c (Marek Szyprowski 2019-10-17 12:27:58 +0200 2016) while (i != 0)
24957db100435 drivers/opp/core.c (Marek Szyprowski 2019-10-17 12:27:58 +0200 2017) regulator_put(opp_table->regulators[--i]);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2018)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2019) kfree(opp_table->regulators);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2020) opp_table->regulators = NULL;
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 2021) opp_table->regulator_count = -1;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2022) err:
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2023) dev_pm_opp_put_opp_table(opp_table);
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2024)
91291d9ad92fa drivers/base/power/opp/core.c (Stephen Boyd 2016-11-30 16:21:25 +0530 2025) return ERR_PTR(ret);
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2026) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2027) EXPORT_SYMBOL_GPL(dev_pm_opp_set_regulators);
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2028)
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2029) /**
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2030) * dev_pm_opp_put_regulators() - Releases resources blocked for regulator
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2031) * @opp_table: OPP table returned from dev_pm_opp_set_regulators().
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2032) */
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2033) void dev_pm_opp_put_regulators(struct opp_table *opp_table)
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2034) {
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2035) int i;
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2036)
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2037) if (unlikely(!opp_table))
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2038) return;
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2039)
779b783cfaa72 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 2040) if (!opp_table->regulators)
779b783cfaa72 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 2041) goto put_opp_table;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2042)
72f80ce4ef9b7 drivers/opp/core.c (Viresh Kumar 2020-08-13 08:38:37 +0530 2043) if (opp_table->enabled) {
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 2044) for (i = opp_table->regulator_count - 1; i >= 0; i--)
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 2045) regulator_disable(opp_table->regulators[i]);
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 2046) }
8d45719caaf56 drivers/opp/core.c (Kamil Konieczny 2019-07-19 17:05:32 +0200 2047)
24957db100435 drivers/opp/core.c (Marek Szyprowski 2019-10-17 12:27:58 +0200 2048) for (i = opp_table->regulator_count - 1; i >= 0; i--)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2049) regulator_put(opp_table->regulators[i]);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2050)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2051) mutex_lock(&opp_table->lock);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2052) if (opp_table->set_opp_data) {
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2053) opp_table->set_opp_data->old_opp.supplies = NULL;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2054) opp_table->set_opp_data->new_opp.supplies = NULL;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2055) }
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2056)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2057) kfree(opp_table->sod_supplies);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2058) opp_table->sod_supplies = NULL;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2059) mutex_unlock(&opp_table->lock);
947355850fcb3 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:20 +0530 2060)
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2061) kfree(opp_table->regulators);
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2062) opp_table->regulators = NULL;
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 2063) opp_table->regulator_count = -1;
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2064)
779b783cfaa72 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 2065) put_opp_table:
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2066) dev_pm_opp_put_opp_table(opp_table);
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2067) }
dfbe4678d709e drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:19 +0530 2068) EXPORT_SYMBOL_GPL(dev_pm_opp_put_regulators);
9f8ea969d5cfd drivers/base/power/opp/core.c (Viresh Kumar 2016-02-09 10:30:33 +0530 2069)
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2070) static void devm_pm_opp_regulators_release(void *data)
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2071) {
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2072) dev_pm_opp_put_regulators(data);
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2073) }
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2074)
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2075) /**
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2076) * devm_pm_opp_set_regulators() - Set regulator names for the device
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2077) * @dev: Device for which regulator name is being set.
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2078) * @names: Array of pointers to the names of the regulator.
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2079) * @count: Number of regulators.
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2080) *
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2081) * This is a resource-managed variant of dev_pm_opp_set_regulators().
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2082) *
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2083) * Return: 0 on success and errorno otherwise.
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2084) */
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2085) int devm_pm_opp_set_regulators(struct device *dev,
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2086) const char * const names[],
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2087) unsigned int count)
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2088) {
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2089) struct opp_table *opp_table;
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2090)
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2091) opp_table = dev_pm_opp_set_regulators(dev, names, count);
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2092) if (IS_ERR(opp_table))
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2093) return PTR_ERR(opp_table);
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2094)
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2095) return devm_add_action_or_reset(dev, devm_pm_opp_regulators_release,
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2096) opp_table);
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2097) }
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2098) EXPORT_SYMBOL_GPL(devm_pm_opp_set_regulators);
32aee78bc5184 drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:55 +0300 2099)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2100) /**
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2101) * dev_pm_opp_set_clkname() - Set clk name for the device
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2102) * @dev: Device for which clk name is being set.
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2103) * @name: Clk name.
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2104) *
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2105) * In order to support OPP switching, OPP layer needs to get pointer to the
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2106) * clock for the device. Simple cases work fine without using this routine (i.e.
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2107) * by passing connection-id as NULL), but for a device with multiple clocks
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2108) * available, the OPP core needs to know the exact name of the clk to use.
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2109) *
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2110) * This must be called before any OPPs are initialized for the device.
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2111) */
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2112) struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2113) {
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2114) struct opp_table *opp_table;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2115) int ret;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2116)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2117) opp_table = _add_opp_table(dev, false);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2118) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2119) return opp_table;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2120)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2121) /* This should be called before OPPs are initialized */
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2122) if (WARN_ON(!list_empty(&opp_table->opp_list))) {
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2123) ret = -EBUSY;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2124) goto err;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2125) }
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2126)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2127) /* clk shouldn't be initialized at this point */
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2128) if (WARN_ON(opp_table->clk)) {
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2129) ret = -EBUSY;
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2130) goto err;
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2131) }
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2132)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2133) /* Find clk for the device */
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2134) opp_table->clk = clk_get(dev, name);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2135) if (IS_ERR(opp_table->clk)) {
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2136) ret = PTR_ERR(opp_table->clk);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2137) if (ret != -EPROBE_DEFER) {
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2138) dev_err(dev, "%s: Couldn't find clock: %d\n", __func__,
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2139) ret);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2140) }
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2141) goto err;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2142) }
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2143)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2144) return opp_table;
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2145)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2146) err:
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2147) dev_pm_opp_put_opp_table(opp_table);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2148)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2149) return ERR_PTR(ret);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2150) }
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2151) EXPORT_SYMBOL_GPL(dev_pm_opp_set_clkname);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2152)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2153) /**
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2154) * dev_pm_opp_put_clkname() - Releases resources blocked for clk.
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2155) * @opp_table: OPP table returned from dev_pm_opp_set_clkname().
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2156) */
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2157) void dev_pm_opp_put_clkname(struct opp_table *opp_table)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2158) {
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2159) if (unlikely(!opp_table))
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2160) return;
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2161)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2162) clk_put(opp_table->clk);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2163) opp_table->clk = ERR_PTR(-EINVAL);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2164)
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2165) dev_pm_opp_put_opp_table(opp_table);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2166) }
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2167) EXPORT_SYMBOL_GPL(dev_pm_opp_put_clkname);
829a4e8c0e9aa drivers/base/power/opp/core.c (Viresh Kumar 2017-06-21 10:29:13 +0530 2168)
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2169) static void devm_pm_opp_clkname_release(void *data)
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2170) {
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2171) dev_pm_opp_put_clkname(data);
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2172) }
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2173)
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2174) /**
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2175) * devm_pm_opp_set_clkname() - Set clk name for the device
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2176) * @dev: Device for which clk name is being set.
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2177) * @name: Clk name.
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2178) *
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2179) * This is a resource-managed variant of dev_pm_opp_set_clkname().
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2180) *
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2181) * Return: 0 on success and errorno otherwise.
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2182) */
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2183) int devm_pm_opp_set_clkname(struct device *dev, const char *name)
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2184) {
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2185) struct opp_table *opp_table;
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2186)
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2187) opp_table = dev_pm_opp_set_clkname(dev, name);
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2188) if (IS_ERR(opp_table))
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2189) return PTR_ERR(opp_table);
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2190)
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2191) return devm_add_action_or_reset(dev, devm_pm_opp_clkname_release,
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2192) opp_table);
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2193) }
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2194) EXPORT_SYMBOL_GPL(devm_pm_opp_set_clkname);
a74f681c3710b drivers/opp/core.c (Yangtao Li 2021-03-14 19:33:54 +0300 2195)
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2196) /**
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2197) * dev_pm_opp_register_set_opp_helper() - Register custom set OPP helper
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2198) * @dev: Device for which the helper is getting registered.
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2199) * @set_opp: Custom set OPP helper.
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2200) *
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2201) * This is useful to support complex platforms (like platforms with multiple
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2202) * regulators per device), instead of the generic OPP set rate helper.
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2203) *
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2204) * This must be called before any OPPs are initialized for the device.
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2205) */
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2206) struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2207) int (*set_opp)(struct dev_pm_set_opp_data *data))
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2208) {
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2209) struct dev_pm_set_opp_data *data;
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2210) struct opp_table *opp_table;
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2211)
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2212) if (!set_opp)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2213) return ERR_PTR(-EINVAL);
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2214)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2215) opp_table = _add_opp_table(dev, false);
47efcbcb340cc drivers/opp/core.c (Viresh Kumar 2020-10-20 16:03:15 +0530 2216) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2217) return opp_table;
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2218)
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2219) /* This should be called before OPPs are initialized */
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2220) if (WARN_ON(!list_empty(&opp_table->opp_list))) {
5019acc693d31 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 2221) dev_pm_opp_put_opp_table(opp_table);
5019acc693d31 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 2222) return ERR_PTR(-EBUSY);
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2223) }
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2224)
5019acc693d31 drivers/opp/core.c (Viresh Kumar 2018-05-22 16:38:08 +0530 2225) /* Another CPU that shares the OPP table has set the helper ? */
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2226) if (opp_table->set_opp)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2227) return opp_table;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2228)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2229) data = kzalloc(sizeof(*data), GFP_KERNEL);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2230) if (!data)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2231) return ERR_PTR(-ENOMEM);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2232)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2233) mutex_lock(&opp_table->lock);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2234) opp_table->set_opp_data = data;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2235) if (opp_table->sod_supplies) {
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2236) data->old_opp.supplies = opp_table->sod_supplies;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2237) data->new_opp.supplies = opp_table->sod_supplies +
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2238) opp_table->regulator_count;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2239) }
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2240) mutex_unlock(&opp_table->lock);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2241)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2242) opp_table->set_opp = set_opp;
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2243)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2244) return opp_table;
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2245) }
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2246) EXPORT_SYMBOL_GPL(dev_pm_opp_register_set_opp_helper);
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2247)
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2248) /**
604a7aeb4325b drivers/opp/core.c (Viresh Kumar 2017-10-05 17:26:21 +0530 2249) * dev_pm_opp_unregister_set_opp_helper() - Releases resources blocked for
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2250) * set_opp helper
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2251) * @opp_table: OPP table returned from dev_pm_opp_register_set_opp_helper().
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2252) *
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2253) * Release resources blocked for platform specific set_opp helper.
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2254) */
604a7aeb4325b drivers/opp/core.c (Viresh Kumar 2017-10-05 17:26:21 +0530 2255) void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table)
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2256) {
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2257) if (unlikely(!opp_table))
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2258) return;
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2259)
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2260) opp_table->set_opp = NULL;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2261)
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2262) mutex_lock(&opp_table->lock);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2263) kfree(opp_table->set_opp_data);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2264) opp_table->set_opp_data = NULL;
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2265) mutex_unlock(&opp_table->lock);
38bb34393804b drivers/opp/core.c (Viresh Kumar 2021-01-19 11:58:58 +0530 2266)
fa30184d192ec drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:43 +0530 2267) dev_pm_opp_put_opp_table(opp_table);
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2268) }
604a7aeb4325b drivers/opp/core.c (Viresh Kumar 2017-10-05 17:26:21 +0530 2269) EXPORT_SYMBOL_GPL(dev_pm_opp_unregister_set_opp_helper);
4dab160eb1586 drivers/base/power/opp/core.c (Viresh Kumar 2016-12-01 16:28:21 +0530 2270)
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2271) static void devm_pm_opp_unregister_set_opp_helper(void *data)
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2272) {
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2273) dev_pm_opp_unregister_set_opp_helper(data);
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2274) }
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2275)
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2276) /**
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2277) * devm_pm_opp_register_set_opp_helper() - Register custom set OPP helper
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2278) * @dev: Device for which the helper is getting registered.
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2279) * @set_opp: Custom set OPP helper.
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2280) *
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2281) * This is a resource-managed version of dev_pm_opp_register_set_opp_helper().
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2282) *
c41c8a3485b0b drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:58 +0300 2283) * Return: 0 on success and errorno otherwise.
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2284) */
c41c8a3485b0b drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:58 +0300 2285) int devm_pm_opp_register_set_opp_helper(struct device *dev,
c41c8a3485b0b drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:58 +0300 2286) int (*set_opp)(struct dev_pm_set_opp_data *data))
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2287) {
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2288) struct opp_table *opp_table;
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2289)
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2290) opp_table = dev_pm_opp_register_set_opp_helper(dev, set_opp);
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2291) if (IS_ERR(opp_table))
c41c8a3485b0b drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:58 +0300 2292) return PTR_ERR(opp_table);
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2293)
c41c8a3485b0b drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:58 +0300 2294) return devm_add_action_or_reset(dev, devm_pm_opp_unregister_set_opp_helper,
c41c8a3485b0b drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:58 +0300 2295) opp_table);
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2296) }
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2297) EXPORT_SYMBOL_GPL(devm_pm_opp_register_set_opp_helper);
a3c47af6942dc drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:20 +0300 2298)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2299) static void _opp_detach_genpd(struct opp_table *opp_table)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2300) {
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2301) int index;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2302)
cb60e9602cce1 drivers/opp/core.c (Viresh Kumar 2020-08-31 11:22:37 +0530 2303) if (!opp_table->genpd_virt_devs)
cb60e9602cce1 drivers/opp/core.c (Viresh Kumar 2020-08-31 11:22:37 +0530 2304) return;
cb60e9602cce1 drivers/opp/core.c (Viresh Kumar 2020-08-31 11:22:37 +0530 2305)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2306) for (index = 0; index < opp_table->required_opp_count; index++) {
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2307) if (!opp_table->genpd_virt_devs[index])
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2308) continue;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2309)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2310) dev_pm_domain_detach(opp_table->genpd_virt_devs[index], false);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2311) opp_table->genpd_virt_devs[index] = NULL;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2312) }
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2313)
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2314) kfree(opp_table->genpd_virt_devs);
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2315) opp_table->genpd_virt_devs = NULL;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2316) }
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2317)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2318) /**
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2319) * dev_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2320) * @dev: Consumer device for which the genpd is getting attached.
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2321) * @names: Null terminated array of pointers containing names of genpd to attach.
17a8f868ae3e8 drivers/opp/core.c (Viresh Kumar 2019-07-08 11:24:56 +0530 2322) * @virt_devs: Pointer to return the array of virtual devices.
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2323) *
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2324) * Multiple generic power domains for a device are supported with the help of
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2325) * virtual genpd devices, which are created for each consumer device - genpd
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2326) * pair. These are the device structures which are attached to the power domain
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2327) * and are required by the OPP core to set the performance state of the genpd.
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2328) * The same API also works for the case where single genpd is available and so
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2329) * we don't need to support that separately.
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2330) *
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2331) * This helper will normally be called by the consumer driver of the device
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2332) * "dev", as only that has details of the genpd names.
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2333) *
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2334) * This helper needs to be called once with a list of all genpd to attach.
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2335) * Otherwise the original device structure will be used instead by the OPP core.
baea35e4db17a drivers/opp/core.c (Viresh Kumar 2019-07-17 11:20:17 +0530 2336) *
baea35e4db17a drivers/opp/core.c (Viresh Kumar 2019-07-17 11:20:17 +0530 2337) * The order of entries in the names array must match the order in which
baea35e4db17a drivers/opp/core.c (Viresh Kumar 2019-07-17 11:20:17 +0530 2338) * "required-opps" are added in DT.
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2339) */
17a8f868ae3e8 drivers/opp/core.c (Viresh Kumar 2019-07-08 11:24:56 +0530 2340) struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
17a8f868ae3e8 drivers/opp/core.c (Viresh Kumar 2019-07-08 11:24:56 +0530 2341) const char **names, struct device ***virt_devs)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2342) {
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2343) struct opp_table *opp_table;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2344) struct device *virt_dev;
baea35e4db17a drivers/opp/core.c (Viresh Kumar 2019-07-17 11:20:17 +0530 2345) int index = 0, ret = -EINVAL;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2346) const char **name = names;
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2347)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2348) opp_table = _add_opp_table(dev, false);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2349) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2350) return opp_table;
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2351)
cb60e9602cce1 drivers/opp/core.c (Viresh Kumar 2020-08-31 11:22:37 +0530 2352) if (opp_table->genpd_virt_devs)
cb60e9602cce1 drivers/opp/core.c (Viresh Kumar 2020-08-31 11:22:37 +0530 2353) return opp_table;
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2354)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2355) /*
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2356) * If the genpd's OPP table isn't already initialized, parsing of the
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2357) * required-opps fail for dev. We should retry this after genpd's OPP
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2358) * table is added.
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2359) */
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2360) if (!opp_table->required_opp_count) {
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2361) ret = -EPROBE_DEFER;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2362) goto put_table;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2363) }
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2364)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2365) mutex_lock(&opp_table->genpd_virt_dev_lock);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2366)
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2367) opp_table->genpd_virt_devs = kcalloc(opp_table->required_opp_count,
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2368) sizeof(*opp_table->genpd_virt_devs),
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2369) GFP_KERNEL);
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2370) if (!opp_table->genpd_virt_devs)
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2371) goto unlock;
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2372)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2373) while (*name) {
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2374) if (index >= opp_table->required_opp_count) {
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2375) dev_err(dev, "Index can't be greater than required-opp-count - 1, %s (%d : %d)\n",
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2376) *name, opp_table->required_opp_count, index);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2377) goto err;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2378) }
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2379)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2380) virt_dev = dev_pm_domain_attach_by_name(dev, *name);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2381) if (IS_ERR(virt_dev)) {
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2382) ret = PTR_ERR(virt_dev);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2383) dev_err(dev, "Couldn't attach to pm_domain: %d\n", ret);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2384) goto err;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2385) }
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2386)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2387) opp_table->genpd_virt_devs[index] = virt_dev;
baea35e4db17a drivers/opp/core.c (Viresh Kumar 2019-07-17 11:20:17 +0530 2388) index++;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2389) name++;
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2390) }
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2391)
17a8f868ae3e8 drivers/opp/core.c (Viresh Kumar 2019-07-08 11:24:56 +0530 2392) if (virt_devs)
17a8f868ae3e8 drivers/opp/core.c (Viresh Kumar 2019-07-08 11:24:56 +0530 2393) *virt_devs = opp_table->genpd_virt_devs;
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2394) mutex_unlock(&opp_table->genpd_virt_dev_lock);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2395)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2396) return opp_table;
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2397)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2398) err:
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2399) _opp_detach_genpd(opp_table);
c0ab9e0812da8 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:43:36 +0530 2400) unlock:
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2401) mutex_unlock(&opp_table->genpd_virt_dev_lock);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2402)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2403) put_table:
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2404) dev_pm_opp_put_opp_table(opp_table);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2405)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2406) return ERR_PTR(ret);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2407) }
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2408) EXPORT_SYMBOL_GPL(dev_pm_opp_attach_genpd);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2409)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2410) /**
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2411) * dev_pm_opp_detach_genpd() - Detach genpd(s) from the device.
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2412) * @opp_table: OPP table returned by dev_pm_opp_attach_genpd().
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2413) *
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2414) * This detaches the genpd(s), resets the virtual device pointers, and puts the
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2415) * OPP table.
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2416) */
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2417) void dev_pm_opp_detach_genpd(struct opp_table *opp_table)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2418) {
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2419) if (unlikely(!opp_table))
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2420) return;
c7bf8758c955e drivers/opp/core.c (Viresh Kumar 2020-11-06 12:16:52 +0530 2421)
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2422) /*
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2423) * Acquire genpd_virt_dev_lock to make sure virt_dev isn't getting
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2424) * used in parallel.
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2425) */
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2426) mutex_lock(&opp_table->genpd_virt_dev_lock);
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2427) _opp_detach_genpd(opp_table);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2428) mutex_unlock(&opp_table->genpd_virt_dev_lock);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2429)
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2430) dev_pm_opp_put_opp_table(opp_table);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2431) }
6319aee10e530 drivers/opp/core.c (Viresh Kumar 2019-05-08 15:19:13 +0530 2432) EXPORT_SYMBOL_GPL(dev_pm_opp_detach_genpd);
4f018bc0e1cfd drivers/opp/core.c (Viresh Kumar 2018-06-26 16:29:34 +0530 2433)
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2434) static void devm_pm_opp_detach_genpd(void *data)
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2435) {
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2436) dev_pm_opp_detach_genpd(data);
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2437) }
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2438)
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2439) /**
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2440) * devm_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2441) * device pointer
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2442) * @dev: Consumer device for which the genpd is getting attached.
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2443) * @names: Null terminated array of pointers containing names of genpd to attach.
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2444) * @virt_devs: Pointer to return the array of virtual devices.
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2445) *
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2446) * This is a resource-managed version of dev_pm_opp_attach_genpd().
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2447) *
9edf48a4bfb75 drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:59 +0300 2448) * Return: 0 on success and errorno otherwise.
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2449) */
9edf48a4bfb75 drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:59 +0300 2450) int devm_pm_opp_attach_genpd(struct device *dev, const char **names,
9edf48a4bfb75 drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:59 +0300 2451) struct device ***virt_devs)
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2452) {
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2453) struct opp_table *opp_table;
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2454)
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2455) opp_table = dev_pm_opp_attach_genpd(dev, names, virt_devs);
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2456) if (IS_ERR(opp_table))
9edf48a4bfb75 drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:59 +0300 2457) return PTR_ERR(opp_table);
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2458)
9edf48a4bfb75 drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:59 +0300 2459) return devm_add_action_or_reset(dev, devm_pm_opp_detach_genpd,
9edf48a4bfb75 drivers/opp/core.c (Dmitry Osipenko 2021-03-14 19:33:59 +0300 2460) opp_table);
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2461) }
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2462) EXPORT_SYMBOL_GPL(devm_pm_opp_attach_genpd);
b4b9e223eccae drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:21 +0300 2463)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2464) /**
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2465) * dev_pm_opp_xlate_required_opp() - Find required OPP for @src_table OPP.
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2466) * @src_table: OPP table which has @dst_table as one of its required OPP table.
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2467) * @dst_table: Required OPP table of the @src_table.
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2468) * @src_opp: OPP from the @src_table.
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2469) *
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2470) * This function returns the OPP (present in @dst_table) pointed out by the
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2471) * "required-opps" property of the @src_opp (present in @src_table).
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2472) *
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2473) * The callers are required to call dev_pm_opp_put() for the returned OPP after
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2474) * use.
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2475) *
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2476) * Return: pointer to 'struct dev_pm_opp' on success and errorno otherwise.
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2477) */
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2478) struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table,
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2479) struct opp_table *dst_table,
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2480) struct dev_pm_opp *src_opp)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2481) {
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2482) struct dev_pm_opp *opp, *dest_opp = ERR_PTR(-ENODEV);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2483) int i;
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2484)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2485) if (!src_table || !dst_table || !src_opp ||
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2486) !src_table->required_opp_tables)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2487) return ERR_PTR(-EINVAL);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2488)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2489) /* required-opps not fully initialized yet */
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2490) if (lazy_linking_pending(src_table))
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2491) return ERR_PTR(-EBUSY);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2492)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2493) for (i = 0; i < src_table->required_opp_count; i++) {
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2494) if (src_table->required_opp_tables[i] == dst_table) {
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2495) mutex_lock(&src_table->lock);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2496)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2497) list_for_each_entry(opp, &src_table->opp_list, node) {
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2498) if (opp == src_opp) {
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2499) dest_opp = opp->required_opps[i];
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2500) dev_pm_opp_get(dest_opp);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2501) break;
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2502) }
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2503) }
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2504)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2505) mutex_unlock(&src_table->lock);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2506) break;
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2507) }
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2508) }
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2509)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2510) if (IS_ERR(dest_opp)) {
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2511) pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__,
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2512) src_table, dst_table);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2513) }
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2514)
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2515) return dest_opp;
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2516) }
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2517) EXPORT_SYMBOL_GPL(dev_pm_opp_xlate_required_opp);
7d8658ef65a4f drivers/opp/core.c (Saravana Kannan 2021-02-04 16:14:22 +0800 2518)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2519) /**
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2520) * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2521) * @src_table: OPP table which has dst_table as one of its required OPP table.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2522) * @dst_table: Required OPP table of the src_table.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2523) * @pstate: Current performance state of the src_table.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2524) *
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2525) * This Returns pstate of the OPP (present in @dst_table) pointed out by the
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2526) * "required-opps" property of the OPP (present in @src_table) which has
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2527) * performance state set to @pstate.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2528) *
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2529) * Return: Zero or positive performance state on success, otherwise negative
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2530) * value on errors.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2531) */
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2532) int dev_pm_opp_xlate_performance_state(struct opp_table *src_table,
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2533) struct opp_table *dst_table,
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2534) unsigned int pstate)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2535) {
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2536) struct dev_pm_opp *opp;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2537) int dest_pstate = -EINVAL;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2538) int i;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2539)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2540) /*
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2541) * Normally the src_table will have the "required_opps" property set to
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2542) * point to one of the OPPs in the dst_table, but in some cases the
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2543) * genpd and its master have one to one mapping of performance states
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2544) * and so none of them have the "required-opps" property set. Return the
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2545) * pstate of the src_table as it is in such cases.
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2546) */
f2f4d2b86f432 drivers/opp/core.c (Dmitry Osipenko 2021-01-18 03:55:23 +0300 2547) if (!src_table || !src_table->required_opp_count)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2548) return pstate;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2549)
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 2550) /* required-opps not fully initialized yet */
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 2551) if (lazy_linking_pending(src_table))
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 2552) return -EBUSY;
7eba0c7641b00 drivers/opp/core.c (Viresh Kumar 2019-11-25 13:57:58 +0530 2553)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2554) for (i = 0; i < src_table->required_opp_count; i++) {
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2555) if (src_table->required_opp_tables[i]->np == dst_table->np)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2556) break;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2557) }
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2558)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2559) if (unlikely(i == src_table->required_opp_count)) {
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2560) pr_err("%s: Couldn't find matching OPP table (%p: %p)\n",
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2561) __func__, src_table, dst_table);
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2562) return -EINVAL;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2563) }
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2564)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2565) mutex_lock(&src_table->lock);
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2566)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2567) list_for_each_entry(opp, &src_table->opp_list, node) {
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2568) if (opp->pstate == pstate) {
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2569) dest_pstate = opp->required_opps[i]->pstate;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2570) goto unlock;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2571) }
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2572) }
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2573)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2574) pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, src_table,
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2575) dst_table);
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2576)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2577) unlock:
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2578) mutex_unlock(&src_table->lock);
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2579)
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2580) return dest_pstate;
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2581) }
c8a59103e22b1 drivers/opp/core.c (Viresh Kumar 2018-11-02 14:36:42 +0530 2582)
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2583) /**
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2584) * dev_pm_opp_add() - Add an OPP table from a table definitions
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2585) * @dev: device for which we do this operation
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2586) * @freq: Frequency in Hz for this OPP
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2587) * @u_volt: Voltage in uVolts for this OPP
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2588) *
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2589) * This function adds an opp definition to the opp table and returns status.
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2590) * The opp is made available by default and it can be controlled using
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2591) * dev_pm_opp_enable/disable functions.
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2592) *
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2593) * Return:
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2594) * 0 On success OR
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2595) * Duplicate OPPs (both freq and volt are same) and opp->available
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2596) * -EEXIST Freq are same and volt are different OR
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2597) * Duplicate OPPs (both freq and volt are same) and !opp->available
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2598) * -ENOMEM Memory allocation failure
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2599) */
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2600) int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2601) {
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2602) struct opp_table *opp_table;
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2603) int ret;
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2604)
32439ac7535a8 drivers/opp/core.c (Viresh Kumar 2021-01-28 12:05:22 +0530 2605) opp_table = _add_opp_table(dev, true);
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2606) if (IS_ERR(opp_table))
dd461cd9183fe drivers/opp/core.c (Stephan Gerhold 2020-07-27 11:30:46 +0200 2607) return PTR_ERR(opp_table);
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2608)
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 2609) /* Fix regulator count for dynamic OPPs */
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 2610) opp_table->regulator_count = 1;
46f48aca2e5ae drivers/opp/core.c (Viresh Kumar 2018-12-11 16:39:36 +0530 2611)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2612) ret = _opp_add_v1(opp_table, dev, freq, u_volt, true);
0ad8c623907c2 drivers/opp/core.c (Viresh Kumar 2018-08-02 14:23:09 +0530 2613) if (ret)
0ad8c623907c2 drivers/opp/core.c (Viresh Kumar 2018-08-02 14:23:09 +0530 2614) dev_pm_opp_put_opp_table(opp_table);
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2615)
8cd2f6e8f34e7 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:01 +0530 2616) return ret;
38393409da345 drivers/base/power/opp.c (Viresh Kumar 2014-11-25 16:04:18 +0530 2617) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2618) EXPORT_SYMBOL_GPL(dev_pm_opp_add);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2619)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2620) /**
327854c871178 drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:56 -0600 2621) * _opp_set_availability() - helper to set the availability of an opp
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2622) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2623) * @freq: OPP frequency to modify availability
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2624) * @availability_req: availability status requested for this opp
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2625) *
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 2626) * Set the availability of an OPP, opp_{enable,disable} share a common logic
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 2627) * which is isolated here.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2628) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2629) * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
e1a2d49cd5ef5 drivers/base/power/opp.c (Stephen Boyd 2015-09-24 12:28:44 -0700 2630) * copy operation, returns 0 if no modification was done OR modification was
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2631) * successful.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2632) */
327854c871178 drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:56 -0600 2633) static int _opp_set_availability(struct device *dev, unsigned long freq,
327854c871178 drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:56 -0600 2634) bool availability_req)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2635) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2636) struct opp_table *opp_table;
a7f3987ea1af0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:50 +0530 2637) struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2638) int r = 0;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2639)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2640) /* Find the opp_table */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2641) opp_table = _find_opp_table(dev);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2642) if (IS_ERR(opp_table)) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2643) r = PTR_ERR(opp_table);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2644) dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r);
a7f3987ea1af0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:50 +0530 2645) return r;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2646) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2647)
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 2648) mutex_lock(&opp_table->lock);
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 2649)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2650) /* Do we have the frequency? */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2651) list_for_each_entry(tmp_opp, &opp_table->opp_list, node) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2652) if (tmp_opp->rate == freq) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2653) opp = tmp_opp;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2654) break;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2655) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2656) }
37a73ec0c9bbd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:41 +0530 2657)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2658) if (IS_ERR(opp)) {
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2659) r = PTR_ERR(opp);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2660) goto unlock;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2661) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2662)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2663) /* Is update really needed? */
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2664) if (opp->available == availability_req)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2665) goto unlock;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2666)
a7f3987ea1af0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:50 +0530 2667) opp->available = availability_req;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2668)
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2669) dev_pm_opp_get(opp);
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2670) mutex_unlock(&opp_table->lock);
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2671)
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2672) /* Notify the change of the OPP availability */
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2673) if (availability_req)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 2674) blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ENABLE,
a7f3987ea1af0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:50 +0530 2675) opp);
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2676) else
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 2677) blocking_notifier_call_chain(&opp_table->head,
a7f3987ea1af0 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:50 +0530 2678) OPP_EVENT_DISABLE, opp);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2679)
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2680) dev_pm_opp_put(opp);
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2681) goto put_table;
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2682)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2683) unlock:
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2684) mutex_unlock(&opp_table->lock);
e4d8ae00169f7 drivers/base/power/opp/core.c (Viresh Kumar 2017-09-21 10:44:36 -0700 2685) put_table:
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2686) dev_pm_opp_put_opp_table(opp_table);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2687) return r;
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2688) }
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2689)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2690) /**
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2691) * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2692) * @dev: device for which we do this operation
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2693) * @freq: OPP frequency to adjust voltage of
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2694) * @u_volt: new OPP target voltage
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2695) * @u_volt_min: new OPP min voltage
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2696) * @u_volt_max: new OPP max voltage
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2697) *
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2698) * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2699) * copy operation, returns 0 if no modifcation was done OR modification was
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2700) * successful.
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2701) */
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2702) int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2703) unsigned long u_volt, unsigned long u_volt_min,
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2704) unsigned long u_volt_max)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2705)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2706) {
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2707) struct opp_table *opp_table;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2708) struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2709) int r = 0;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2710)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2711) /* Find the opp_table */
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2712) opp_table = _find_opp_table(dev);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2713) if (IS_ERR(opp_table)) {
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2714) r = PTR_ERR(opp_table);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2715) dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2716) return r;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2717) }
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2718)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2719) mutex_lock(&opp_table->lock);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2720)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2721) /* Do we have the frequency? */
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2722) list_for_each_entry(tmp_opp, &opp_table->opp_list, node) {
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2723) if (tmp_opp->rate == freq) {
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2724) opp = tmp_opp;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2725) break;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2726) }
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2727) }
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2728)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2729) if (IS_ERR(opp)) {
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2730) r = PTR_ERR(opp);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2731) goto adjust_unlock;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2732) }
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2733)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2734) /* Is update really needed? */
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2735) if (opp->supplies->u_volt == u_volt)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2736) goto adjust_unlock;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2737)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2738) opp->supplies->u_volt = u_volt;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2739) opp->supplies->u_volt_min = u_volt_min;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2740) opp->supplies->u_volt_max = u_volt_max;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2741)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2742) dev_pm_opp_get(opp);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2743) mutex_unlock(&opp_table->lock);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2744)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2745) /* Notify the voltage change of the OPP */
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2746) blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE,
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2747) opp);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2748)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2749) dev_pm_opp_put(opp);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2750) goto adjust_put_table;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2751)
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2752) adjust_unlock:
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2753) mutex_unlock(&opp_table->lock);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2754) adjust_put_table:
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2755) dev_pm_opp_put_opp_table(opp_table);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2756) return r;
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2757) }
036491542aa47 drivers/opp/core.c (Valdis Kletnieks 2020-06-20 13:03:22 -0400 2758) EXPORT_SYMBOL_GPL(dev_pm_opp_adjust_voltage);
25cb20a212a1f drivers/opp/core.c (Stephen Boyd 2019-10-16 16:57:53 +0200 2759)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2760) /**
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2761) * dev_pm_opp_enable() - Enable a specific OPP
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2762) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2763) * @freq: OPP frequency to enable
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2764) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2765) * Enables a provided opp. If the operation is valid, this returns 0, else the
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2766) * corresponding error value. It is meant to be used for users an OPP available
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2767) * after being temporarily made unavailable with dev_pm_opp_disable.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2768) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2769) * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
e1a2d49cd5ef5 drivers/base/power/opp.c (Stephen Boyd 2015-09-24 12:28:44 -0700 2770) * copy operation, returns 0 if no modification was done OR modification was
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2771) * successful.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2772) */
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2773) int dev_pm_opp_enable(struct device *dev, unsigned long freq)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2774) {
327854c871178 drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:56 -0600 2775) return _opp_set_availability(dev, freq, true);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2776) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2777) EXPORT_SYMBOL_GPL(dev_pm_opp_enable);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2778)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2779) /**
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2780) * dev_pm_opp_disable() - Disable a specific OPP
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2781) * @dev: device for which we do this operation
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2782) * @freq: OPP frequency to disable
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2783) *
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2784) * Disables a provided opp. If the operation is valid, this returns
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2785) * 0, else the corresponding error value. It is meant to be a temporary
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2786) * control by users to make this OPP not available until the circumstances are
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2787) * right to make it available again (with a call to dev_pm_opp_enable).
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2788) *
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2789) * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
e1a2d49cd5ef5 drivers/base/power/opp.c (Stephen Boyd 2015-09-24 12:28:44 -0700 2790) * copy operation, returns 0 if no modification was done OR modification was
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2791) * successful.
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2792) */
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2793) int dev_pm_opp_disable(struct device *dev, unsigned long freq)
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2794) {
327854c871178 drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:56 -0600 2795) return _opp_set_availability(dev, freq, false);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2796) }
5d4879cda67b0 drivers/base/power/opp.c (Nishanth Menon 2013-09-19 16:03:50 -0500 2797) EXPORT_SYMBOL_GPL(dev_pm_opp_disable);
e1f60b292ffd6 drivers/base/power/opp.c (Nishanth Menon 2010-10-13 00:13:10 +0200 2798)
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2799) /**
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2800) * dev_pm_opp_register_notifier() - Register OPP notifier for the device
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2801) * @dev: Device for which notifier needs to be registered
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2802) * @nb: Notifier block to be registered
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2803) *
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2804) * Return: 0 on success or a negative error value.
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2805) */
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2806) int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb)
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2807) {
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2808) struct opp_table *opp_table;
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2809) int ret;
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2810)
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2811) opp_table = _find_opp_table(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2812) if (IS_ERR(opp_table))
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2813) return PTR_ERR(opp_table);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2814)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 2815) ret = blocking_notifier_chain_register(&opp_table->head, nb);
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2816)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2817) dev_pm_opp_put_opp_table(opp_table);
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2818)
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2819) return ret;
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2820) }
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2821) EXPORT_SYMBOL(dev_pm_opp_register_notifier);
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2822)
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2823) /**
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2824) * dev_pm_opp_unregister_notifier() - Unregister OPP notifier for the device
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2825) * @dev: Device for which notifier needs to be unregistered
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2826) * @nb: Notifier block to be unregistered
984f16c8490cb drivers/base/power/opp.c (Nishanth Menon 2014-12-24 11:22:57 -0600 2827) *
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2828) * Return: 0 on success or a negative error value.
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2829) */
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2830) int dev_pm_opp_unregister_notifier(struct device *dev,
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2831) struct notifier_block *nb)
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2832) {
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2833) struct opp_table *opp_table;
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2834) int ret;
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2835)
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2836) opp_table = _find_opp_table(dev);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2837) if (IS_ERR(opp_table))
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2838) return PTR_ERR(opp_table);
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2839)
052c6f19141dd drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:49 +0530 2840) ret = blocking_notifier_chain_unregister(&opp_table->head, nb);
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2841)
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2842) dev_pm_opp_put_opp_table(opp_table);
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2843)
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2844) return ret;
03ca370fbf7b7 drivers/base/power/opp.c (MyungJoo Ham 2011-09-30 22:35:12 +0200 2845) }
dc2c9ad52af45 drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:03 +0530 2846) EXPORT_SYMBOL(dev_pm_opp_unregister_notifier);
b496dfbc94ab8 drivers/base/power/opp.c (Shawn Guo 2012-09-05 01:09:12 +0200 2847)
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2848) /**
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2849) * dev_pm_opp_remove_table() - Free all OPPs associated with the device
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2850) * @dev: device pointer used to lookup OPP table.
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2851) *
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2852) * Free both OPPs created using static entries present in DT and the
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2853) * dynamically added entries.
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2854) */
8aaf6264fc7fd drivers/opp/core.c (Viresh Kumar 2020-08-20 13:18:23 +0530 2855) void dev_pm_opp_remove_table(struct device *dev)
9274c892430ef drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:00 +0530 2856) {
9274c892430ef drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:00 +0530 2857) struct opp_table *opp_table;
9274c892430ef drivers/base/power/opp/core.c (Viresh Kumar 2017-01-02 14:41:00 +0530 2858)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2859) /* Check for existing table for 'dev' */
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2860) opp_table = _find_opp_table(dev);
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2861) if (IS_ERR(opp_table)) {
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2862) int error = PTR_ERR(opp_table);
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2863)
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2864) if (error != -ENODEV)
2c2709dc6921c drivers/base/power/opp/core.c (Viresh Kumar 2016-02-16 14:17:53 +0530 2865) WARN(1, "%s: opp_table: %d\n",
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2866) IS_ERR_OR_NULL(dev) ?
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2867) "Invalid device" : dev_name(dev),
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2868) error);
5b650b388844f drivers/base/power/opp/core.c (Viresh Kumar 2017-01-23 10:11:48 +0530 2869) return;
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2870) }
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2871)
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 2872) /*
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 2873) * Drop the extra reference only if the OPP table was successfully added
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 2874) * with dev_pm_opp_of_add_table() earlier.
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 2875) **/
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 2876) if (_opp_remove_all_static(opp_table))
922ff0759a162 drivers/opp/core.c (Viresh Kumar 2020-08-31 13:03:06 +0530 2877) dev_pm_opp_put_opp_table(opp_table);
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 2878)
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 2879) /* Drop reference taken by _find_opp_table() */
cdd6ed90cdb6c drivers/opp/core.c (Viresh Kumar 2018-09-12 12:35:19 +0530 2880) dev_pm_opp_put_opp_table(opp_table);
737002b5de3d1 drivers/base/power/opp.c (Viresh Kumar 2015-07-29 16:22:58 +0530 2881) }
411466c5081d2 drivers/base/power/opp/core.c (Sudeep Holla 2016-05-03 15:05:04 +0100 2882) EXPORT_SYMBOL_GPL(dev_pm_opp_remove_table);
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2883)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2884) /**
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2885) * dev_pm_opp_sync_regulators() - Sync state of voltage regulators
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2886) * @dev: device for which we do this operation
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2887) *
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2888) * Sync voltage state of the OPP table regulators.
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2889) *
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2890) * Return: 0 on success or a negative error value.
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2891) */
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2892) int dev_pm_opp_sync_regulators(struct device *dev)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2893) {
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2894) struct opp_table *opp_table;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2895) struct regulator *reg;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2896) int i, ret = 0;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2897)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2898) /* Device may not have OPP table */
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2899) opp_table = _find_opp_table(dev);
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2900) if (IS_ERR(opp_table))
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2901) return 0;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2902)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2903) /* Regulator may not be required for the device */
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2904) if (unlikely(!opp_table->regulators))
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2905) goto put_table;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2906)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2907) /* Nothing to sync if voltage wasn't changed */
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2908) if (!opp_table->enabled)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2909) goto put_table;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2910)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2911) for (i = 0; i < opp_table->regulator_count; i++) {
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2912) reg = opp_table->regulators[i];
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2913) ret = regulator_sync_voltage(reg);
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2914) if (ret)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2915) break;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2916) }
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2917) put_table:
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2918) /* Drop reference taken by _find_opp_table() */
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2919) dev_pm_opp_put_opp_table(opp_table);
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2920)
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2921) return ret;
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2922) }
ce8073d83f63a drivers/opp/core.c (Dmitry Osipenko 2021-01-21 01:26:47 +0300 2923) EXPORT_SYMBOL_GPL(dev_pm_opp_sync_regulators);
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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