Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Core driver for the pin config portions of the pin control subsystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2011 ST-Ericsson SA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Written on behalf of Linaro for ST-Ericsson
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Author: Linus Walleij <linus.walleij@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #define pr_fmt(fmt) "pinconfig core: " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/pinctrl/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/pinctrl/pinctrl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/pinctrl/pinconf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include "core.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "pinconf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) int pinconf_check_ops(struct pinctrl_dev *pctldev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	const struct pinconf_ops *ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	/* We have to be able to config the pins in SOME way */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	if (!ops->pin_config_set && !ops->pin_config_group_set) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		dev_err(pctldev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 			"pinconf has to be able to set a pins config\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) int pinconf_validate_map(const struct pinctrl_map *map, int i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	if (!map->data.configs.group_or_pin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		pr_err("failed to register map %s (%d): no group/pin given\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		       map->name, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (!map->data.configs.num_configs ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 			!map->data.configs.configs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		pr_err("failed to register map %s (%d): no configs given\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		       map->name, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			   unsigned long *config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	const struct pinconf_ops *ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	if (!ops || !ops->pin_config_get) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		dev_dbg(pctldev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			"cannot get pin configuration, .pin_config_get missing in driver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		return -ENOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	return ops->pin_config_get(pctldev, pin, config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) int pin_config_group_get(const char *dev_name, const char *pin_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			 unsigned long *config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct pinctrl_dev *pctldev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	const struct pinconf_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	int selector, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	pctldev = get_pinctrl_dev_from_devname(dev_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	if (!pctldev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	mutex_lock(&pctldev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	if (!ops || !ops->pin_config_group_get) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		dev_dbg(pctldev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 			"cannot get configuration for pin group, missing group config get function in driver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		ret = -ENOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	selector = pinctrl_get_group_selector(pctldev, pin_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	if (selector < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		ret = selector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	ret = ops->pin_config_group_get(pctldev, selector, config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	mutex_unlock(&pctldev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int pinconf_map_to_setting(const struct pinctrl_map *map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			  struct pinctrl_setting *setting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	struct pinctrl_dev *pctldev = setting->pctldev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	int pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	switch (setting->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	case PIN_MAP_TYPE_CONFIGS_PIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		pin = pin_get_from_name(pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 					map->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		if (pin < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 			dev_err(pctldev->dev, "could not map pin config for \"%s\"",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 				map->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 			return pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		setting->data.configs.group_or_pin = pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	case PIN_MAP_TYPE_CONFIGS_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		pin = pinctrl_get_group_selector(pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 					 map->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		if (pin < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			dev_err(pctldev->dev, "could not map group config for \"%s\"",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 				map->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			return pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		setting->data.configs.group_or_pin = pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	setting->data.configs.num_configs = map->data.configs.num_configs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	setting->data.configs.configs = map->data.configs.configs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) void pinconf_free_setting(const struct pinctrl_setting *setting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int pinconf_apply_setting(const struct pinctrl_setting *setting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	struct pinctrl_dev *pctldev = setting->pctldev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	const struct pinconf_ops *ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (!ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		dev_err(pctldev->dev, "missing confops\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	switch (setting->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	case PIN_MAP_TYPE_CONFIGS_PIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		if (!ops->pin_config_set) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 			dev_err(pctldev->dev, "missing pin_config_set op\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		ret = ops->pin_config_set(pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 				setting->data.configs.group_or_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 				setting->data.configs.configs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 				setting->data.configs.num_configs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			dev_err(pctldev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 				"pin_config_set op failed for pin %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 				setting->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	case PIN_MAP_TYPE_CONFIGS_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		if (!ops->pin_config_group_set) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			dev_err(pctldev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 				"missing pin_config_group_set op\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		ret = ops->pin_config_group_set(pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 				setting->data.configs.group_or_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 				setting->data.configs.configs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 				setting->data.configs.num_configs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			dev_err(pctldev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 				"pin_config_group_set op failed for group %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 				setting->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		       unsigned long *configs, size_t nconfigs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	const struct pinconf_ops *ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	if (!ops || !ops->pin_config_set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		return -ENOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return ops->pin_config_set(pctldev, pin, configs, nconfigs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #ifdef CONFIG_DEBUG_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static void pinconf_show_config(struct seq_file *s, struct pinctrl_dev *pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		      unsigned long *configs, unsigned num_configs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	const struct pinconf_ops *confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	if (pctldev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		confops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		confops = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	for (i = 0; i < num_configs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		seq_puts(s, "config ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		if (confops && confops->pin_config_config_dbg_show)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			confops->pin_config_config_dbg_show(pctldev, s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 							    configs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 			seq_printf(s, "%08lx", configs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) void pinconf_show_map(struct seq_file *s, const struct pinctrl_map *map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	struct pinctrl_dev *pctldev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	switch (map->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	case PIN_MAP_TYPE_CONFIGS_PIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		seq_puts(s, "pin ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	case PIN_MAP_TYPE_CONFIGS_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		seq_puts(s, "group ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	seq_printf(s, "%s\n", map->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	pinconf_show_config(s, pctldev, map->data.configs.configs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			    map->data.configs.num_configs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) void pinconf_show_setting(struct seq_file *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 			  const struct pinctrl_setting *setting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	struct pinctrl_dev *pctldev = setting->pctldev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	struct pin_desc *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	switch (setting->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	case PIN_MAP_TYPE_CONFIGS_PIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		desc = pin_desc_get(setting->pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 				    setting->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		seq_printf(s, "pin %s (%d)", desc->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 			   setting->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	case PIN_MAP_TYPE_CONFIGS_GROUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		seq_printf(s, "group %s (%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 			   pctlops->get_group_name(pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 					setting->data.configs.group_or_pin),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 			   setting->data.configs.group_or_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	 * FIXME: We should really get the pin controller to dump the config
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	 * values, so they can be decoded to something meaningful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	pinconf_show_config(s, pctldev, setting->data.configs.configs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 			    setting->data.configs.num_configs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 			     struct seq_file *s, int pin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	const struct pinconf_ops *ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	/* no-op when not using generic pin config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	pinconf_generic_dump_pins(pctldev, s, NULL, pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	if (ops && ops->pin_config_dbg_show)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		ops->pin_config_dbg_show(pctldev, s, pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static int pinconf_pins_show(struct seq_file *s, void *what)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	struct pinctrl_dev *pctldev = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	unsigned i, pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	seq_puts(s, "Pin config settings per pin\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	seq_puts(s, "Format: pin (name): configs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	mutex_lock(&pctldev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	/* The pin number can be retrived from the pin controller descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	for (i = 0; i < pctldev->desc->npins; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		struct pin_desc *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		pin = pctldev->desc->pins[i].number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		desc = pin_desc_get(pctldev, pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		/* Skip if we cannot search the pin */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		if (!desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		seq_printf(s, "pin %d (%s): ", pin, desc->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		pinconf_dump_pin(pctldev, s, pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	mutex_unlock(&pctldev->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static void pinconf_dump_group(struct pinctrl_dev *pctldev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 			       struct seq_file *s, unsigned selector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 			       const char *gname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	const struct pinconf_ops *ops = pctldev->desc->confops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	/* no-op when not using generic pin config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	pinconf_generic_dump_pins(pctldev, s, gname, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	if (ops && ops->pin_config_group_dbg_show)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		ops->pin_config_group_dbg_show(pctldev, s, selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static int pinconf_groups_show(struct seq_file *s, void *what)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	struct pinctrl_dev *pctldev = s->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	unsigned ngroups = pctlops->get_groups_count(pctldev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	unsigned selector = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	seq_puts(s, "Pin config settings per pin group\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	seq_puts(s, "Format: group (name): configs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	while (selector < ngroups) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 		const char *gname = pctlops->get_group_name(pctldev, selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 		seq_printf(s, "%u (%s): ", selector, gname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		pinconf_dump_group(pctldev, s, selector, gname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		selector++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) DEFINE_SHOW_ATTRIBUTE(pinconf_pins);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) DEFINE_SHOW_ATTRIBUTE(pinconf_groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) void pinconf_init_device_debugfs(struct dentry *devroot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			 struct pinctrl_dev *pctldev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	debugfs_create_file("pinconf-pins", S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 			    devroot, pctldev, &pinconf_pins_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	debugfs_create_file("pinconf-groups", S_IFREG | S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 			    devroot, pctldev, &pinconf_groups_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) #endif