af873fcecef56 (Thomas Gleixner 2019-05-28 09:57:21 -0700 1) // SPDX-License-Identifier: GPL-2.0-only
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 2) /*
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 3) * Core driver for the pin config portions of the pin control subsystem
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 4) *
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 5) * Copyright (C) 2011 ST-Ericsson SA
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 6) * Written on behalf of Linaro for ST-Ericsson
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 7) *
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 8) * Author: Linus Walleij <linus.walleij@linaro.org>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 9) */
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 10) #define pr_fmt(fmt) "pinconfig core: " fmt
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 11)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 12) #include <linux/kernel.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 13) #include <linux/module.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 14) #include <linux/init.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 15) #include <linux/device.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 16) #include <linux/slab.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 17) #include <linux/debugfs.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 18) #include <linux/seq_file.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 19) #include <linux/pinctrl/machine.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 20) #include <linux/pinctrl/pinctrl.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 21) #include <linux/pinctrl/pinconf.h>
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 22) #include "core.h"
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 23) #include "pinconf.h"
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 24)
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 25) int pinconf_check_ops(struct pinctrl_dev *pctldev)
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 26) {
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 27) const struct pinconf_ops *ops = pctldev->desc->confops;
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 28)
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 29) /* We have to be able to config the pins in SOME way */
ad6e1107baa2e (John Crispin 2012-04-26 16:47:11 +0200 30) if (!ops->pin_config_set && !ops->pin_config_group_set) {
ad6e1107baa2e (John Crispin 2012-04-26 16:47:11 +0200 31) dev_err(pctldev->dev,
ad6e1107baa2e (John Crispin 2012-04-26 16:47:11 +0200 32) "pinconf has to be able to set a pins config\n");
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 33) return -EINVAL;
ad6e1107baa2e (John Crispin 2012-04-26 16:47:11 +0200 34) }
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 35) return 0;
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 36) }
2b69425017498 (Stephen Warren 2012-02-19 23:45:46 -0700 37)
3f713b7c223eb (Masahiro Yamada 2017-08-04 11:22:31 +0900 38) int pinconf_validate_map(const struct pinctrl_map *map, int i)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 39) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 40) if (!map->data.configs.group_or_pin) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 41) pr_err("failed to register map %s (%d): no group/pin given\n",
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 42) map->name, i);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 43) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 44) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 45)
c95df2db2cb5a (Dong Aisheng 2012-05-14 19:06:36 +0800 46) if (!map->data.configs.num_configs ||
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 47) !map->data.configs.configs) {
c95df2db2cb5a (Dong Aisheng 2012-05-14 19:06:36 +0800 48) pr_err("failed to register map %s (%d): no configs given\n",
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 49) map->name, i);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 50) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 51) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 52)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 53) return 0;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 54) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 55)
394349f7789fd (Linus Walleij 2011-11-24 18:27:15 +0100 56) int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 57) unsigned long *config)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 58) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 59) const struct pinconf_ops *ops = pctldev->desc->confops;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 60)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 61) if (!ops || !ops->pin_config_get) {
ca67f10f27b6a (Masahiro Yamada 2015-07-30 17:27:44 +0900 62) dev_dbg(pctldev->dev,
ca67f10f27b6a (Masahiro Yamada 2015-07-30 17:27:44 +0900 63) "cannot get pin configuration, .pin_config_get missing in driver\n");
c420619d5177a (Alexandre Belloni 2013-12-09 11:38:29 +0100 64) return -ENOTSUPP;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 65) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 66)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 67) return ops->pin_config_get(pctldev, pin, config);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 68) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 69)
43699dea1ea21 (Stephen Warren 2011-12-15 16:57:17 -0700 70) int pin_config_group_get(const char *dev_name, const char *pin_group,
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 71) unsigned long *config)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 72) {
43699dea1ea21 (Stephen Warren 2011-12-15 16:57:17 -0700 73) struct pinctrl_dev *pctldev;
43699dea1ea21 (Stephen Warren 2011-12-15 16:57:17 -0700 74) const struct pinconf_ops *ops;
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 75) int selector, ret;
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 76)
9dfac4fd7f8cd (Linus Walleij 2012-02-01 18:02:47 +0100 77) pctldev = get_pinctrl_dev_from_devname(dev_name);
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 78) if (!pctldev) {
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 79) ret = -EINVAL;
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 80) return ret;
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 81) }
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 82)
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 83) mutex_lock(&pctldev->mutex);
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 84)
43699dea1ea21 (Stephen Warren 2011-12-15 16:57:17 -0700 85) ops = pctldev->desc->confops;
43699dea1ea21 (Stephen Warren 2011-12-15 16:57:17 -0700 86)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 87) if (!ops || !ops->pin_config_group_get) {
e4d030509f925 (Markus Elfring 2017-05-02 10:22:47 +0200 88) dev_dbg(pctldev->dev,
e4d030509f925 (Markus Elfring 2017-05-02 10:22:47 +0200 89) "cannot get configuration for pin group, missing group config get function in driver\n");
c420619d5177a (Alexandre Belloni 2013-12-09 11:38:29 +0100 90) ret = -ENOTSUPP;
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 91) goto unlock;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 92) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 93)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 94) selector = pinctrl_get_group_selector(pctldev, pin_group);
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 95) if (selector < 0) {
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 96) ret = selector;
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 97) goto unlock;
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 98) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 99)
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 100) ret = ops->pin_config_group_get(pctldev, selector, config);
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 101)
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 102) unlock:
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 103) mutex_unlock(&pctldev->mutex);
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 104) return ret;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 105) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 106)
3f713b7c223eb (Masahiro Yamada 2017-08-04 11:22:31 +0900 107) int pinconf_map_to_setting(const struct pinctrl_map *map,
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 108) struct pinctrl_setting *setting)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 109) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 110) struct pinctrl_dev *pctldev = setting->pctldev;
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 111) int pin;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 112)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 113) switch (setting->type) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 114) case PIN_MAP_TYPE_CONFIGS_PIN:
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 115) pin = pin_get_from_name(pctldev,
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 116) map->data.configs.group_or_pin);
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 117) if (pin < 0) {
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 118) dev_err(pctldev->dev, "could not map pin config for \"%s\"",
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 119) map->data.configs.group_or_pin);
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 120) return pin;
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 121) }
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 122) setting->data.configs.group_or_pin = pin;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 123) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 124) case PIN_MAP_TYPE_CONFIGS_GROUP:
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 125) pin = pinctrl_get_group_selector(pctldev,
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 126) map->data.configs.group_or_pin);
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 127) if (pin < 0) {
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 128) dev_err(pctldev->dev, "could not map group config for \"%s\"",
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 129) map->data.configs.group_or_pin);
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 130) return pin;
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 131) }
70b36378d44d7 (Linus Walleij 2012-03-12 21:38:29 +0100 132) setting->data.configs.group_or_pin = pin;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 133) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 134) default:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 135) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 136) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 137)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 138) setting->data.configs.num_configs = map->data.configs.num_configs;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 139) setting->data.configs.configs = map->data.configs.configs;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 140)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 141) return 0;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 142) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 143)
3f713b7c223eb (Masahiro Yamada 2017-08-04 11:22:31 +0900 144) void pinconf_free_setting(const struct pinctrl_setting *setting)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 145) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 146) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 147)
3f713b7c223eb (Masahiro Yamada 2017-08-04 11:22:31 +0900 148) int pinconf_apply_setting(const struct pinctrl_setting *setting)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 149) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 150) struct pinctrl_dev *pctldev = setting->pctldev;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 151) const struct pinconf_ops *ops = pctldev->desc->confops;
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 152) int ret;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 153)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 154) if (!ops) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 155) dev_err(pctldev->dev, "missing confops\n");
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 156) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 157) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 158)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 159) switch (setting->type) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 160) case PIN_MAP_TYPE_CONFIGS_PIN:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 161) if (!ops->pin_config_set) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 162) dev_err(pctldev->dev, "missing pin_config_set op\n");
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 163) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 164) }
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 165) ret = ops->pin_config_set(pctldev,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 166) setting->data.configs.group_or_pin,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 167) setting->data.configs.configs,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 168) setting->data.configs.num_configs);
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 169) if (ret < 0) {
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 170) dev_err(pctldev->dev,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 171) "pin_config_set op failed for pin %d\n",
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 172) setting->data.configs.group_or_pin);
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 173) return ret;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 174) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 175) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 176) case PIN_MAP_TYPE_CONFIGS_GROUP:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 177) if (!ops->pin_config_group_set) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 178) dev_err(pctldev->dev,
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 179) "missing pin_config_group_set op\n");
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 180) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 181) }
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 182) ret = ops->pin_config_group_set(pctldev,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 183) setting->data.configs.group_or_pin,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 184) setting->data.configs.configs,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 185) setting->data.configs.num_configs);
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 186) if (ret < 0) {
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 187) dev_err(pctldev->dev,
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 188) "pin_config_group_set op failed for group %d\n",
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 189) setting->data.configs.group_or_pin);
03b054e9696c3 (Sherman Yin 2013-08-27 11:32:12 -0700 190) return ret;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 191) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 192) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 193) default:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 194) return -EINVAL;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 195) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 196)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 197) return 0;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 198) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 199)
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 200) int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 201) unsigned long *configs, size_t nconfigs)
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 202) {
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 203) const struct pinconf_ops *ops;
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 204)
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 205) ops = pctldev->desc->confops;
17a512486bab6 (Masahiro Yamada 2017-08-04 11:59:32 +0900 206) if (!ops || !ops->pin_config_set)
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 207) return -ENOTSUPP;
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 208)
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 209) return ops->pin_config_set(pctldev, pin, configs, nconfigs);
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 210) }
15381bc7c7f52 (Mika Westerberg 2017-01-23 15:34:33 +0300 211)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 212) #ifdef CONFIG_DEBUG_FS
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 213)
6de52c15132f6 (kbuild test robot 2015-07-17 21:37:09 +0800 214) static void pinconf_show_config(struct seq_file *s, struct pinctrl_dev *pctldev,
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 215) unsigned long *configs, unsigned num_configs)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 216) {
6cb4158757a86 (Stephen Warren 2012-04-13 10:49:06 -0600 217) const struct pinconf_ops *confops;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 218) int i;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 219)
6cb4158757a86 (Stephen Warren 2012-04-13 10:49:06 -0600 220) if (pctldev)
6cb4158757a86 (Stephen Warren 2012-04-13 10:49:06 -0600 221) confops = pctldev->desc->confops;
6cb4158757a86 (Stephen Warren 2012-04-13 10:49:06 -0600 222) else
6cb4158757a86 (Stephen Warren 2012-04-13 10:49:06 -0600 223) confops = NULL;
6cb4158757a86 (Stephen Warren 2012-04-13 10:49:06 -0600 224)
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 225) for (i = 0; i < num_configs; i++) {
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 226) seq_puts(s, "config ");
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 227) if (confops && confops->pin_config_config_dbg_show)
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 228) confops->pin_config_config_dbg_show(pctldev, s,
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 229) configs[i]);
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 230) else
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 231) seq_printf(s, "%08lx", configs[i]);
47352a6375847 (Markus Elfring 2017-05-01 22:24:29 +0200 232) seq_putc(s, '\n');
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 233) }
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 234) }
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 235)
3f713b7c223eb (Masahiro Yamada 2017-08-04 11:22:31 +0900 236) void pinconf_show_map(struct seq_file *s, const struct pinctrl_map *map)
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 237) {
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 238) struct pinctrl_dev *pctldev;
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 239)
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 240) pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 241)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 242) switch (map->type) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 243) case PIN_MAP_TYPE_CONFIGS_PIN:
de2eae26def67 (Markus Elfring 2017-05-02 09:52:50 +0200 244) seq_puts(s, "pin ");
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 245) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 246) case PIN_MAP_TYPE_CONFIGS_GROUP:
de2eae26def67 (Markus Elfring 2017-05-02 09:52:50 +0200 247) seq_puts(s, "group ");
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 248) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 249) default:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 250) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 251) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 252)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 253) seq_printf(s, "%s\n", map->data.configs.group_or_pin);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 254)
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 255) pinconf_show_config(s, pctldev, map->data.configs.configs,
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 256) map->data.configs.num_configs);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 257) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 258)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 259) void pinconf_show_setting(struct seq_file *s,
3f713b7c223eb (Masahiro Yamada 2017-08-04 11:22:31 +0900 260) const struct pinctrl_setting *setting)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 261) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 262) struct pinctrl_dev *pctldev = setting->pctldev;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 263) const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 264) struct pin_desc *desc;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 265)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 266) switch (setting->type) {
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 267) case PIN_MAP_TYPE_CONFIGS_PIN:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 268) desc = pin_desc_get(setting->pctldev,
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 269) setting->data.configs.group_or_pin);
cf9d994dcf00c (Masahiro Yamada 2016-05-24 14:26:26 +0900 270) seq_printf(s, "pin %s (%d)", desc->name,
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 271) setting->data.configs.group_or_pin);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 272) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 273) case PIN_MAP_TYPE_CONFIGS_GROUP:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 274) seq_printf(s, "group %s (%d)",
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 275) pctlops->get_group_name(pctldev,
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 276) setting->data.configs.group_or_pin),
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 277) setting->data.configs.group_or_pin);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 278) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 279) default:
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 280) break;
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 281) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 282)
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 283) /*
3ec440e33f689 (Andy Shevchenko 2017-02-28 16:59:56 +0200 284) * FIXME: We should really get the pin controller to dump the config
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 285) * values, so they can be decoded to something meaningful.
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 286) */
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 287) pinconf_show_config(s, pctldev, setting->data.configs.configs,
d96310aeddc69 (Jon Hunter 2015-07-14 11:17:59 +0100 288) setting->data.configs.num_configs);
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 289) }
1e2082b520721 (Stephen Warren 2012-03-02 13:05:48 -0700 290)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 291) static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 292) struct seq_file *s, int pin)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 293) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 294) const struct pinconf_ops *ops = pctldev->desc->confops;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 295)
394349f7789fd (Linus Walleij 2011-11-24 18:27:15 +0100 296) /* no-op when not using generic pin config */
dd4d01f7bad88 (Soren Brinkmann 2015-01-09 07:43:46 -0800 297) pinconf_generic_dump_pins(pctldev, s, NULL, pin);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 298) if (ops && ops->pin_config_dbg_show)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 299) ops->pin_config_dbg_show(pctldev, s, pin);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 300) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 301)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 302) static int pinconf_pins_show(struct seq_file *s, void *what)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 303) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 304) struct pinctrl_dev *pctldev = s->private;
706e8520e8450 (Chanho Park 2012-01-03 16:47:50 +0900 305) unsigned i, pin;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 306)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 307) seq_puts(s, "Pin config settings per pin\n");
2aeefe0233174 (Dong Aisheng 2012-04-16 22:07:24 +0800 308) seq_puts(s, "Format: pin (name): configs\n");
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 309)
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 310) mutex_lock(&pctldev->mutex);
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 311)
706e8520e8450 (Chanho Park 2012-01-03 16:47:50 +0900 312) /* The pin number can be retrived from the pin controller descriptor */
546edd83abe4f (Stephen Warren 2012-01-06 13:38:31 -0700 313) for (i = 0; i < pctldev->desc->npins; i++) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 314) struct pin_desc *desc;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 315)
706e8520e8450 (Chanho Park 2012-01-03 16:47:50 +0900 316) pin = pctldev->desc->pins[i].number;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 317) desc = pin_desc_get(pctldev, pin);
706e8520e8450 (Chanho Park 2012-01-03 16:47:50 +0900 318) /* Skip if we cannot search the pin */
76ce37f05ecf4 (Markus Elfring 2017-05-02 10:01:57 +0200 319) if (!desc)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 320) continue;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 321)
a672eb5e277d2 (Masahiro Yamada 2016-05-25 15:37:27 +0900 322) seq_printf(s, "pin %d (%s): ", pin, desc->name);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 323)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 324) pinconf_dump_pin(pctldev, s, pin);
47352a6375847 (Markus Elfring 2017-05-01 22:24:29 +0200 325) seq_putc(s, '\n');
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 326) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 327)
42fed7ba44e4e (Patrice Chotard 2013-04-11 11:01:27 +0200 328) mutex_unlock(&pctldev->mutex);
57b676f9c1b7c (Stephen Warren 2012-03-02 13:05:44 -0700 329)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 330) return 0;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 331) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 332)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 333) static void pinconf_dump_group(struct pinctrl_dev *pctldev,
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 334) struct seq_file *s, unsigned selector,
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 335) const char *gname)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 336) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 337) const struct pinconf_ops *ops = pctldev->desc->confops;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 338)
394349f7789fd (Linus Walleij 2011-11-24 18:27:15 +0100 339) /* no-op when not using generic pin config */
dd4d01f7bad88 (Soren Brinkmann 2015-01-09 07:43:46 -0800 340) pinconf_generic_dump_pins(pctldev, s, gname, 0);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 341) if (ops && ops->pin_config_group_dbg_show)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 342) ops->pin_config_group_dbg_show(pctldev, s, selector);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 343) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 344)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 345) static int pinconf_groups_show(struct seq_file *s, void *what)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 346) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 347) struct pinctrl_dev *pctldev = s->private;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 348) const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
d1e90e9e7467d (Viresh Kumar 2012-03-30 11:25:40 +0530 349) unsigned ngroups = pctlops->get_groups_count(pctldev);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 350) unsigned selector = 0;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 351)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 352) seq_puts(s, "Pin config settings per pin group\n");
2aeefe0233174 (Dong Aisheng 2012-04-16 22:07:24 +0800 353) seq_puts(s, "Format: group (name): configs\n");
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 354)
d1e90e9e7467d (Viresh Kumar 2012-03-30 11:25:40 +0530 355) while (selector < ngroups) {
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 356) const char *gname = pctlops->get_group_name(pctldev, selector);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 357)
a672eb5e277d2 (Masahiro Yamada 2016-05-25 15:37:27 +0900 358) seq_printf(s, "%u (%s): ", selector, gname);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 359) pinconf_dump_group(pctldev, s, selector, gname);
47352a6375847 (Markus Elfring 2017-05-01 22:24:29 +0200 360) seq_putc(s, '\n');
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 361) selector++;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 362) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 363)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 364) return 0;
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 365) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 366)
0819dc72ea70a (Yangtao Li 2018-11-30 11:36:17 -0500 367) DEFINE_SHOW_ATTRIBUTE(pinconf_pins);
0819dc72ea70a (Yangtao Li 2018-11-30 11:36:17 -0500 368) DEFINE_SHOW_ATTRIBUTE(pinconf_groups);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 369)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 370) void pinconf_init_device_debugfs(struct dentry *devroot,
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 371) struct pinctrl_dev *pctldev)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 372) {
47473813bdcb8 (Drew Fustini 2021-03-01 21:30:56 -0800 373) debugfs_create_file("pinconf-pins", 0444,
0819dc72ea70a (Yangtao Li 2018-11-30 11:36:17 -0500 374) devroot, pctldev, &pinconf_pins_fops);
47473813bdcb8 (Drew Fustini 2021-03-01 21:30:56 -0800 375) debugfs_create_file("pinconf-groups", 0444,
0819dc72ea70a (Yangtao Li 2018-11-30 11:36:17 -0500 376) devroot, pctldev, &pinconf_groups_fops);
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 377) }
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 378)
ae6b4d8588f4f (Linus Walleij 2011-10-19 18:14:33 +0200 379) #endif
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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