d2912cb15bdda drivers/opp/debugfs.c (Thomas Gleixner 2019-06-04 10:11:33 +0200 1) // SPDX-License-Identifier: GPL-2.0-only
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 2) /*
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 3) * Generic OPP debugfs interface
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 4) *
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 5) * Copyright (C) 2015-2016 Viresh Kumar <viresh.kumar@linaro.org>
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 6) */
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 7)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 8) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 9)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 10) #include <linux/debugfs.h>
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 11) #include <linux/device.h>
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 12) #include <linux/err.h>
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 13) #include <linux/init.h>
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 14) #include <linux/limits.h>
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 15) #include <linux/slab.h>
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 16)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 17) #include "opp.h"
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 18)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 19) static struct dentry *rootdir;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 20)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 21) static void opp_set_dev_name(const struct device *dev, char *name)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 22) {
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 23) if (dev->parent)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 24) snprintf(name, NAME_MAX, "%s-%s", dev_name(dev->parent),
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 25) dev_name(dev));
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 26) else
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 27) snprintf(name, NAME_MAX, "%s", dev_name(dev));
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 28) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 29)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 30) void opp_debug_remove_one(struct dev_pm_opp *opp)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 31) {
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 32) debugfs_remove_recursive(opp->dentry);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 33) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 34)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 35) static ssize_t bw_name_read(struct file *fp, char __user *userbuf,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 36) size_t count, loff_t *ppos)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 37) {
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 38) struct icc_path *path = fp->private_data;
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 39) char buf[64];
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 40) int i;
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 41)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 42) i = scnprintf(buf, sizeof(buf), "%.62s\n", icc_get_name(path));
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 43)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 44) return simple_read_from_buffer(userbuf, count, ppos, buf, i);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 45) }
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 46)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 47) static const struct file_operations bw_name_fops = {
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 48) .open = simple_open,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 49) .read = bw_name_read,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 50) .llseek = default_llseek,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 51) };
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 52)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 53) static void opp_debug_create_bw(struct dev_pm_opp *opp,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 54) struct opp_table *opp_table,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 55) struct dentry *pdentry)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 56) {
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 57) struct dentry *d;
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 58) char name[11];
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 59) int i;
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 60)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 61) for (i = 0; i < opp_table->path_count; i++) {
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 62) snprintf(name, sizeof(name), "icc-path-%.1d", i);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 63)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 64) /* Create per-path directory */
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 65) d = debugfs_create_dir(name, pdentry);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 66)
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 67) debugfs_create_file("name", S_IRUGO, d, opp_table->paths[i],
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 68) &bw_name_fops);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 69) debugfs_create_u32("peak_bw", S_IRUGO, d,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 70) &opp->bandwidth[i].peak);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 71) debugfs_create_u32("avg_bw", S_IRUGO, d,
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 72) &opp->bandwidth[i].avg);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 73) }
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 74) }
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 75)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 76) static void opp_debug_create_supplies(struct dev_pm_opp *opp,
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 77) struct opp_table *opp_table,
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 78) struct dentry *pdentry)
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 79) {
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 80) struct dentry *d;
1fae788ed640e drivers/base/power/opp/debugfs.c (Viresh Kumar 2017-05-23 09:32:13 +0530 81) int i;
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 82)
1fae788ed640e drivers/base/power/opp/debugfs.c (Viresh Kumar 2017-05-23 09:32:13 +0530 83) for (i = 0; i < opp_table->regulator_count; i++) {
d741029a23904 drivers/opp/debugfs.c (Arvind Yadav 2017-09-21 11:15:36 +0530 84) char name[15];
d741029a23904 drivers/opp/debugfs.c (Arvind Yadav 2017-09-21 11:15:36 +0530 85)
d741029a23904 drivers/opp/debugfs.c (Arvind Yadav 2017-09-21 11:15:36 +0530 86) snprintf(name, sizeof(name), "supply-%d", i);
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 87)
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 88) /* Create per-opp directory */
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 89) d = debugfs_create_dir(name, pdentry);
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 90)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 91) debugfs_create_ulong("u_volt_target", S_IRUGO, d,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 92) &opp->supplies[i].u_volt);
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 93)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 94) debugfs_create_ulong("u_volt_min", S_IRUGO, d,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 95) &opp->supplies[i].u_volt_min);
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 96)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 97) debugfs_create_ulong("u_volt_max", S_IRUGO, d,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 98) &opp->supplies[i].u_volt_max);
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 99)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 100) debugfs_create_ulong("u_amp", S_IRUGO, d,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 101) &opp->supplies[i].u_amp);
1fae788ed640e drivers/base/power/opp/debugfs.c (Viresh Kumar 2017-05-23 09:32:13 +0530 102) }
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 103) }
dfbe4678d709e drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-12-01 16:28:19 +0530 104)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 105) void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 106) {
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 107) struct dentry *pdentry = opp_table->dentry;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 108) struct dentry *d;
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 109) unsigned long id;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 110) char name[25]; /* 20 chars for 64 bit value + 5 (opp:\0) */
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 111)
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 112) /*
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 113) * Get directory name for OPP.
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 114) *
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 115) * - Normally rate is unique to each OPP, use it to get unique opp-name.
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 116) * - For some devices rate isn't available, use index instead.
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 117) */
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 118) if (likely(opp->rate))
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 119) id = opp->rate;
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 120) else
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 121) id = _get_opp_count(opp_table);
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 122)
a1e8c13600bfd drivers/opp/debugfs.c (Viresh Kumar 2018-04-06 14:35:45 +0530 123) snprintf(name, sizeof(name), "opp:%lu", id);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 124)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 125) /* Create per-opp directory */
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 126) d = debugfs_create_dir(name, pdentry);
009acd196fc86 drivers/opp/debugfs.c (Viresh Kumar 2017-10-11 12:54:14 +0530 127)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 128) debugfs_create_bool("available", S_IRUGO, d, &opp->available);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 129) debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 130) debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 131) debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 132) debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 133) debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 134) debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 135) &opp->clock_latency_ns);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 136)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 137) opp_debug_create_supplies(opp, opp_table, d);
0430b1d5704b0 drivers/opp/debugfs.c (Viresh Kumar 2020-05-18 14:25:32 +0300 138) opp_debug_create_bw(opp, opp_table, d);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 139)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 140) opp->dentry = d;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 141) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 142)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 143) static void opp_list_debug_create_dir(struct opp_device *opp_dev,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 144) struct opp_table *opp_table)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 145) {
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 146) const struct device *dev = opp_dev->dev;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 147) struct dentry *d;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 148)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 149) opp_set_dev_name(dev, opp_table->dentry_name);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 150)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 151) /* Create device specific directory */
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 152) d = debugfs_create_dir(opp_table->dentry_name, rootdir);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 153)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 154) opp_dev->dentry = d;
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 155) opp_table->dentry = d;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 156) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 157)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 158) static void opp_list_debug_create_link(struct opp_device *opp_dev,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 159) struct opp_table *opp_table)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 160) {
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 161) char name[NAME_MAX];
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 162)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 163) opp_set_dev_name(opp_dev->dev, name);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 164)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 165) /* Create device specific directory link */
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 166) opp_dev->dentry = debugfs_create_symlink(name, rootdir,
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 167) opp_table->dentry_name);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 168) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 169)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 170) /**
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 171) * opp_debug_register - add a device opp node to the debugfs 'opp' directory
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 172) * @opp_dev: opp-dev pointer for device
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 173) * @opp_table: the device-opp being added
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 174) *
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 175) * Dynamically adds device specific directory in debugfs 'opp' directory. If the
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 176) * device-opp is shared with other devices, then links will be created for all
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 177) * devices except the first.
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 178) */
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 179) void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 180) {
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 181) if (opp_table->dentry)
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 182) opp_list_debug_create_link(opp_dev, opp_table);
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 183) else
a2dea4cb90702 drivers/opp/debugfs.c (Greg Kroah-Hartman 2019-01-22 16:21:17 +0100 184) opp_list_debug_create_dir(opp_dev, opp_table);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 185) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 186)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 187) static void opp_migrate_dentry(struct opp_device *opp_dev,
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 188) struct opp_table *opp_table)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 189) {
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 190) struct opp_device *new_dev;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 191) const struct device *dev;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 192) struct dentry *dentry;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 193)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 194) /* Look for next opp-dev */
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 195) list_for_each_entry(new_dev, &opp_table->dev_list, node)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 196) if (new_dev != opp_dev)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 197) break;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 198)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 199) /* new_dev is guaranteed to be valid here */
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 200) dev = new_dev->dev;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 201) debugfs_remove_recursive(new_dev->dentry);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 202)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 203) opp_set_dev_name(dev, opp_table->dentry_name);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 204)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 205) dentry = debugfs_rename(rootdir, opp_dev->dentry, rootdir,
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 206) opp_table->dentry_name);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 207) if (!dentry) {
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 208) dev_err(dev, "%s: Failed to rename link from: %s to %s\n",
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 209) __func__, dev_name(opp_dev->dev), dev_name(dev));
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 210) return;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 211) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 212)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 213) new_dev->dentry = dentry;
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 214) opp_table->dentry = dentry;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 215) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 216)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 217) /**
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 218) * opp_debug_unregister - remove a device opp node from debugfs opp directory
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 219) * @opp_dev: opp-dev pointer for device
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 220) * @opp_table: the device-opp being removed
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 221) *
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 222) * Dynamically removes device specific directory from debugfs 'opp' directory.
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 223) */
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 224) void opp_debug_unregister(struct opp_device *opp_dev,
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 225) struct opp_table *opp_table)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 226) {
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 227) if (opp_dev->dentry == opp_table->dentry) {
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 228) /* Move the real dentry object under another device */
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 229) if (!list_is_singular(&opp_table->dev_list)) {
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 230) opp_migrate_dentry(opp_dev, opp_table);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 231) goto out;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 232) }
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 233) opp_table->dentry = NULL;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 234) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 235)
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 236) debugfs_remove_recursive(opp_dev->dentry);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 237)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 238) out:
2c2709dc6921c drivers/base/power/opp/debugfs.c (Viresh Kumar 2016-02-16 14:17:53 +0530 239) opp_dev->dentry = NULL;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 240) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 241)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 242) static int __init opp_debug_init(void)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 243) {
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 244) /* Create /sys/kernel/debug/opp directory */
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 245) rootdir = debugfs_create_dir("opp", NULL);
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 246)
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 247) return 0;
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 248) }
deaa51465105a drivers/base/power/opp/debugfs.c (Viresh Kumar 2015-11-11 07:59:01 +0530 249) core_initcall(opp_debug_init);
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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