[linux-block.git] / drivers / pinctrl / pinconf.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Core driver for the pin config portions of the pin control subsystem
 *
 * Copyright (C) 2011 ST-Ericsson SA
 * Written on behalf of Linaro for ST-Ericsson
 *
 * Author: Linus Walleij <linus.walleij@linaro.org>
 */
#define pr_fmt(fmt) "pinconfig core: " fmt

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinconf.h>
#include "core.h"
#include "pinconf.h"

int pinconf_check_ops(struct pinctrl_dev *pctldev)
{
	const struct pinconf_ops *ops = pctldev->desc->confops;

	/* We have to be able to config the pins in SOME way */
	if (!ops->pin_config_set && !ops->pin_config_group_set) {
		dev_err(pctldev->dev,
			"pinconf has to be able to set a pins config\n");
		return -EINVAL;
	}
	return 0;
}

int pinconf_validate_map(const struct pinctrl_map *map, int i)
{
	if (!map->data.configs.group_or_pin) {
		pr_err("failed to register map %s (%d): no group/pin given\n",
		       map->name, i);
		return -EINVAL;
	}

	if (!map->data.configs.num_configs ||
			!map->data.configs.configs) {
		pr_err("failed to register map %s (%d): no configs given\n",
		       map->name, i);
		return -EINVAL;
	}

	return 0;
}

int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
			   unsigned long *config)
{
	const struct pinconf_ops *ops = pctldev->desc->confops;

	if (!ops || !ops->pin_config_get) {
		dev_dbg(pctldev->dev,
			"cannot get pin configuration, .pin_config_get missing in driver\n");
		return -ENOTSUPP;
	}

	return ops->pin_config_get(pctldev, pin, config);
}

int pin_config_group_get(const char *dev_name, const char *pin_group,
			 unsigned long *config)
{
	struct pinctrl_dev *pctldev;
	const struct pinconf_ops *ops;
	int selector, ret;

	pctldev = get_pinctrl_dev_from_devname(dev_name);
	if (!pctldev) {
		ret = -EINVAL;
		return ret;
	}

	mutex_lock(&pctldev->mutex);

	ops = pctldev->desc->confops;

	if (!ops || !ops->pin_config_group_get) {
		dev_dbg(pctldev->dev,
			"cannot get configuration for pin group, missing group config get function in driver\n");
		ret = -ENOTSUPP;
		goto unlock;
	}

	selector = pinctrl_get_group_selector(pctldev, pin_group);
	if (selector < 0) {
		ret = selector;
		goto unlock;
	}

	ret = ops->pin_config_group_get(pctldev, selector, config);

unlock:
	mutex_unlock(&pctldev->mutex);
	return ret;
}

int pinconf_map_to_setting(const struct pinctrl_map *map,
			  struct pinctrl_setting *setting)
{
	struct pinctrl_dev *pctldev = setting->pctldev;
	int pin;

	switch (setting->type) {
	case PIN_MAP_TYPE_CONFIGS_PIN:
		pin = pin_get_from_name(pctldev,
					map->data.configs.group_or_pin);
		if (pin < 0) {
			dev_err(pctldev->dev, "could not map pin config for \"%s\"",
				map->data.configs.group_or_pin);
			return pin;
		}
		setting->data.configs.group_or_pin = pin;
		break;
	case PIN_MAP_TYPE_CONFIGS_GROUP:
		pin = pinctrl_get_group_selector(pctldev,
					 map->data.configs.group_or_pin);
		if (pin < 0) {
			dev_err(pctldev->dev, "could not map group config for \"%s\"",
				map->data.configs.group_or_pin);
			return pin;
		}
		setting->data.configs.group_or_pin = pin;
		break;
	default:
		return -EINVAL;
	}

	setting->data.configs.num_configs = map->data.configs.num_configs;
	setting->data.configs.configs = map->data.configs.configs;

	return 0;
}

void pinconf_free_setting(const struct pinctrl_setting *setting)
{
}

int pinconf_apply_setting(const struct pinctrl_setting *setting)
{
	struct pinctrl_dev *pctldev = setting->pctldev;
	const struct pinconf_ops *ops = pctldev->desc->confops;
	int ret;

	if (!ops) {
		dev_err(pctldev->dev, "missing confops\n");
		return -EINVAL;
	}

	switch (setting->type) {
	case PIN_MAP_TYPE_CONFIGS_PIN:
		if (!ops->pin_config_set) {
			dev_err(pctldev->dev, "missing pin_config_set op\n");
			return -EINVAL;
		}
		ret = ops->pin_config_set(pctldev,
				setting->data.configs.group_or_pin,
				setting->data.configs.configs,
				setting->data.configs.num_configs);
		if (ret < 0) {
			dev_err(pctldev->dev,
				"pin_config_set op failed for pin %d\n",
				setting->data.configs.group_or_pin);
			return ret;
		}
		break;
	case PIN_MAP_TYPE_CONFIGS_GROUP:
		if (!ops->pin_config_group_set) {
			dev_err(pctldev->dev,
				"missing pin_config_group_set op\n");
			return -EINVAL;
		}
		ret = ops->pin_config_group_set(pctldev,
				setting->data.configs.group_or_pin,
				setting->data.configs.configs,
				setting->data.configs.num_configs);
		if (ret < 0) {
			dev_err(pctldev->dev,
				"pin_config_group_set op failed for group %d\n",
				setting->data.configs.group_or_pin);
			return ret;
		}
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
		       unsigned long *configs, size_t nconfigs)
{
	const struct pinconf_ops *ops;

	ops = pctldev->desc->confops;
	if (!ops || !ops->pin_config_set)
		return -ENOTSUPP;

	return ops->pin_config_set(pctldev, pin, configs, nconfigs);
}

#ifdef CONFIG_DEBUG_FS

static void pinconf_show_config(struct seq_file *s, struct pinctrl_dev *pctldev,
		      unsigned long *configs, unsigned num_configs)
{
	const struct pinconf_ops *confops;
	int i;

	if (pctldev)
		confops = pctldev->desc->confops;
	else
		confops = NULL;

	for (i = 0; i < num_configs; i++) {
		seq_puts(s, "config ");
		if (confops && confops->pin_config_config_dbg_show)
			confops->pin_config_config_dbg_show(pctldev, s,
							    configs[i]);
		else
			seq_printf(s, "%08lx", configs[i]);
		seq_putc(s, '\n');
	}
}

void pinconf_show_map(struct seq_file *s, const struct pinctrl_map *map)
{
	struct pinctrl_dev *pctldev;

	pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);

	switch (map->type) {
	case PIN_MAP_TYPE_CONFIGS_PIN:
		seq_puts(s, "pin ");
		break;
	case PIN_MAP_TYPE_CONFIGS_GROUP:
		seq_puts(s, "group ");
		break;
	default:
		break;
	}

	seq_printf(s, "%s\n", map->data.configs.group_or_pin);

	pinconf_show_config(s, pctldev, map->data.configs.configs,
			    map->data.configs.num_configs);
}

void pinconf_show_setting(struct seq_file *s,
			  const struct pinctrl_setting *setting)
{
	struct pinctrl_dev *pctldev = setting->pctldev;
	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
	struct pin_desc *desc;

	switch (setting->type) {
	case PIN_MAP_TYPE_CONFIGS_PIN:
		desc = pin_desc_get(setting->pctldev,
				    setting->data.configs.group_or_pin);
		seq_printf(s, "pin %s (%d)", desc->name,
			   setting->data.configs.group_or_pin);
		break;
	case PIN_MAP_TYPE_CONFIGS_GROUP:
		seq_printf(s, "group %s (%d)",
			   pctlops->get_group_name(pctldev,
					setting->data.configs.group_or_pin),
			   setting->data.configs.group_or_pin);
		break;
	default:
		break;
	}

	/*
	 * FIXME: We should really get the pin controller to dump the config
	 * values, so they can be decoded to something meaningful.
	 */
	pinconf_show_config(s, pctldev, setting->data.configs.configs,
			    setting->data.configs.num_configs);
}

static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
			     struct seq_file *s, int pin)
{
	const struct pinconf_ops *ops = pctldev->desc->confops;

	/* no-op when not using generic pin config */
	pinconf_generic_dump_pins(pctldev, s, NULL, pin);
	if (ops && ops->pin_config_dbg_show)
		ops->pin_config_dbg_show(pctldev, s, pin);
}

static int pinconf_pins_show(struct seq_file *s, void *what)
{
	struct pinctrl_dev *pctldev = s->private;
	unsigned i, pin;

	seq_puts(s, "Pin config settings per pin\n");
	seq_puts(s, "Format: pin (name): configs\n");

	mutex_lock(&pctldev->mutex);

	/* The pin number can be retrived from the pin controller descriptor */
	for (i = 0; i < pctldev->desc->npins; i++) {
		struct pin_desc *desc;

		pin = pctldev->desc->pins[i].number;
		desc = pin_desc_get(pctldev, pin);
		/* Skip if we cannot search the pin */
		if (!desc)
			continue;

		seq_printf(s, "pin %d (%s): ", pin, desc->name);

		pinconf_dump_pin(pctldev, s, pin);
		seq_putc(s, '\n');
	}

	mutex_unlock(&pctldev->mutex);

	return 0;
}

static void pinconf_dump_group(struct pinctrl_dev *pctldev,
			       struct seq_file *s, unsigned selector,
			       const char *gname)
{
	const struct pinconf_ops *ops = pctldev->desc->confops;

	/* no-op when not using generic pin config */
	pinconf_generic_dump_pins(pctldev, s, gname, 0);
	if (ops && ops->pin_config_group_dbg_show)
		ops->pin_config_group_dbg_show(pctldev, s, selector);
}

static int pinconf_groups_show(struct seq_file *s, void *what)
{
	struct pinctrl_dev *pctldev = s->private;
	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
	unsigned ngroups = pctlops->get_groups_count(pctldev);
	unsigned selector = 0;

	seq_puts(s, "Pin config settings per pin group\n");
	seq_puts(s, "Format: group (name): configs\n");

	while (selector < ngroups) {
		const char *gname = pctlops->get_group_name(pctldev, selector);

		seq_printf(s, "%u (%s): ", selector, gname);
		pinconf_dump_group(pctldev, s, selector, gname);
		seq_putc(s, '\n');
		selector++;
	}

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(pinconf_pins);
DEFINE_SHOW_ATTRIBUTE(pinconf_groups);

void pinconf_init_device_debugfs(struct dentry *devroot,
			 struct pinctrl_dev *pctldev)
{
	debugfs_create_file("pinconf-pins", 0444,
			    devroot, pctldev, &pinconf_pins_fops);
	debugfs_create_file("pinconf-groups", 0444,
			    devroot, pctldev, &pinconf_groups_fops);
}

#endif
Commit	Line	Data
af873fce	1	// SPDX-License-Identifier: GPL-2.0-only
ae6b4d85 LW	2	/*
	3	* Core driver for the pin config portions of the pin control subsystem
	4	*
	5	* Copyright (C) 2011 ST-Ericsson SA
	6	* Written on behalf of Linaro for ST-Ericsson
	7	*
	8	* Author: Linus Walleij <linus.walleij@linaro.org>
ae6b4d85 LW	9	*/
	10	#define pr_fmt(fmt) "pinconfig core: " fmt
	11
	12	#include <linux/kernel.h>
	13	#include <linux/module.h>
	14	#include <linux/init.h>
	15	#include <linux/device.h>
	16	#include <linux/slab.h>
	17	#include <linux/debugfs.h>
	18	#include <linux/seq_file.h>
	19	#include <linux/pinctrl/machine.h>
	20	#include <linux/pinctrl/pinctrl.h>
	21	#include <linux/pinctrl/pinconf.h>
	22	#include "core.h"
	23	#include "pinconf.h"
	24
2b694250 SW	25	int pinconf_check_ops(struct pinctrl_dev *pctldev)
	26	{
	27	const struct pinconf_ops *ops = pctldev->desc->confops;
	28
2b694250	29	/* We have to be able to config the pins in SOME way */
ad6e1107 JC	30	if (!ops->pin_config_set && !ops->pin_config_group_set) {
	31	dev_err(pctldev->dev,
	32	"pinconf has to be able to set a pins config\n");
2b694250	33	return -EINVAL;
ad6e1107	34	}
2b694250 SW	35	return 0;
	36	}
	37
3f713b7c	38	int pinconf_validate_map(const struct pinctrl_map *map, int i)
1e2082b5 SW	39	{
	40	if (!map->data.configs.group_or_pin) {
	41	pr_err("failed to register map %s (%d): no group/pin given\n",
	42	map->name, i);
	43	return -EINVAL;
	44	}
	45
c95df2db	46	if (!map->data.configs.num_configs \|\|
1e2082b5	47	!map->data.configs.configs) {
c95df2db	48	pr_err("failed to register map %s (%d): no configs given\n",
1e2082b5 SW	49	map->name, i);
	50	return -EINVAL;
	51	}
	52
	53	return 0;
	54	}
	55
394349f7	56	int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
ae6b4d85 LW	57	unsigned long *config)
	58	{
	59	const struct pinconf_ops *ops = pctldev->desc->confops;
	60
	61	if (!ops \|\| !ops->pin_config_get) {
ca67f10f MY	62	dev_dbg(pctldev->dev,
ca67f10f MY	63	"cannot get pin configuration, .pin_config_get missing in driver\n");
c420619d	64	return -ENOTSUPP;
ae6b4d85 LW	65	}
	66
	67	return ops->pin_config_get(pctldev, pin, config);
	68	}
	69
43699dea	70	int pin_config_group_get(const char dev_name, const char pin_group,
ae6b4d85 LW	71	unsigned long *config)
ae6b4d85 LW	72	{
43699dea SW	73	struct pinctrl_dev *pctldev;
43699dea SW	74	const struct pinconf_ops *ops;
57b676f9 SW	75	int selector, ret;
57b676f9 SW	76
9dfac4fd	77	pctldev = get_pinctrl_dev_from_devname(dev_name);
57b676f9 SW	78	if (!pctldev) {
57b676f9 SW	79	ret = -EINVAL;
42fed7ba	80	return ret;
57b676f9	81	}
42fed7ba PC	82
	83	mutex_lock(&pctldev->mutex);
	84
43699dea SW	85	ops = pctldev->desc->confops;
43699dea SW	86
ae6b4d85	87	if (!ops \|\| !ops->pin_config_group_get) {
e4d03050 ME	88	dev_dbg(pctldev->dev,
e4d03050 ME	89	"cannot get configuration for pin group, missing group config get function in driver\n");
c420619d	90	ret = -ENOTSUPP;
57b676f9	91	goto unlock;
ae6b4d85 LW	92	}
	93
	94	selector = pinctrl_get_group_selector(pctldev, pin_group);
57b676f9 SW	95	if (selector < 0) {
	96	ret = selector;
	97	goto unlock;
	98	}
ae6b4d85	99
57b676f9 SW	100	ret = ops->pin_config_group_get(pctldev, selector, config);
	101
	102	unlock:
42fed7ba	103	mutex_unlock(&pctldev->mutex);
57b676f9	104	return ret;
ae6b4d85	105	}
ae6b4d85	106
3f713b7c	107	int pinconf_map_to_setting(const struct pinctrl_map *map,
1e2082b5 SW	108	struct pinctrl_setting *setting)
	109	{
	110	struct pinctrl_dev *pctldev = setting->pctldev;
70b36378	111	int pin;
1e2082b5 SW	112
	113	switch (setting->type) {
	114	case PIN_MAP_TYPE_CONFIGS_PIN:
70b36378 LW	115	pin = pin_get_from_name(pctldev,
	116	map->data.configs.group_or_pin);
	117	if (pin < 0) {
	118	dev_err(pctldev->dev, "could not map pin config for \"%s\"",
	119	map->data.configs.group_or_pin);
	120	return pin;
	121	}
	122	setting->data.configs.group_or_pin = pin;
1e2082b5 SW	123	break;
1e2082b5 SW	124	case PIN_MAP_TYPE_CONFIGS_GROUP:
70b36378 LW	125	pin = pinctrl_get_group_selector(pctldev,
	126	map->data.configs.group_or_pin);
	127	if (pin < 0) {
	128	dev_err(pctldev->dev, "could not map group config for \"%s\"",
	129	map->data.configs.group_or_pin);
	130	return pin;
	131	}
	132	setting->data.configs.group_or_pin = pin;
1e2082b5 SW	133	break;
	134	default:
	135	return -EINVAL;
	136	}
	137
	138	setting->data.configs.num_configs = map->data.configs.num_configs;
	139	setting->data.configs.configs = map->data.configs.configs;
	140
	141	return 0;
	142	}
	143
3f713b7c	144	void pinconf_free_setting(const struct pinctrl_setting *setting)
1e2082b5 SW	145	{
	146	}
	147
3f713b7c	148	int pinconf_apply_setting(const struct pinctrl_setting *setting)
1e2082b5 SW	149	{
	150	struct pinctrl_dev *pctldev = setting->pctldev;
	151	const struct pinconf_ops *ops = pctldev->desc->confops;
03b054e9	152	int ret;
1e2082b5 SW	153
	154	if (!ops) {
	155	dev_err(pctldev->dev, "missing confops\n");
	156	return -EINVAL;
	157	}
	158
	159	switch (setting->type) {
	160	case PIN_MAP_TYPE_CONFIGS_PIN:
	161	if (!ops->pin_config_set) {
	162	dev_err(pctldev->dev, "missing pin_config_set op\n");
	163	return -EINVAL;
	164	}
03b054e9 SY	165	ret = ops->pin_config_set(pctldev,
	166	setting->data.configs.group_or_pin,
	167	setting->data.configs.configs,
	168	setting->data.configs.num_configs);
	169	if (ret < 0) {
	170	dev_err(pctldev->dev,
	171	"pin_config_set op failed for pin %d\n",
	172	setting->data.configs.group_or_pin);
	173	return ret;
1e2082b5 SW	174	}
	175	break;
	176	case PIN_MAP_TYPE_CONFIGS_GROUP:
	177	if (!ops->pin_config_group_set) {
	178	dev_err(pctldev->dev,
	179	"missing pin_config_group_set op\n");
	180	return -EINVAL;
	181	}
03b054e9 SY	182	ret = ops->pin_config_group_set(pctldev,
	183	setting->data.configs.group_or_pin,
	184	setting->data.configs.configs,
	185	setting->data.configs.num_configs);
	186	if (ret < 0) {
	187	dev_err(pctldev->dev,
	188	"pin_config_group_set op failed for group %d\n",
	189	setting->data.configs.group_or_pin);
	190	return ret;
1e2082b5 SW	191	}
	192	break;
	193	default:
	194	return -EINVAL;
	195	}
	196
	197	return 0;
	198	}
	199
15381bc7 MW	200	int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
	201	unsigned long *configs, size_t nconfigs)
	202	{
	203	const struct pinconf_ops *ops;
	204
	205	ops = pctldev->desc->confops;
17a51248	206	if (!ops \|\| !ops->pin_config_set)
15381bc7 MW	207	return -ENOTSUPP;
	208
	209	return ops->pin_config_set(pctldev, pin, configs, nconfigs);
	210	}
	211
ae6b4d85 LW	212	#ifdef CONFIG_DEBUG_FS
ae6b4d85 LW	213
6de52c15	214	static void pinconf_show_config(struct seq_file s, struct pinctrl_dev pctldev,
d96310ae	215	unsigned long *configs, unsigned num_configs)
1e2082b5	216	{
6cb41587	217	const struct pinconf_ops *confops;
1e2082b5 SW	218	int i;
1e2082b5 SW	219
6cb41587 SW	220	if (pctldev)
	221	confops = pctldev->desc->confops;
	222	else
	223	confops = NULL;
	224
d96310ae JH	225	for (i = 0; i < num_configs; i++) {
	226	seq_puts(s, "config ");
	227	if (confops && confops->pin_config_config_dbg_show)
	228	confops->pin_config_config_dbg_show(pctldev, s,
	229	configs[i]);
	230	else
	231	seq_printf(s, "%08lx", configs[i]);
47352a63	232	seq_putc(s, '\n');
d96310ae JH	233	}
	234	}
	235
3f713b7c	236	void pinconf_show_map(struct seq_file s, const struct pinctrl_map map)
d96310ae JH	237	{
	238	struct pinctrl_dev *pctldev;
	239
	240	pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
	241
1e2082b5 SW	242	switch (map->type) {
1e2082b5 SW	243	case PIN_MAP_TYPE_CONFIGS_PIN:
de2eae26	244	seq_puts(s, "pin ");
1e2082b5 SW	245	break;
1e2082b5 SW	246	case PIN_MAP_TYPE_CONFIGS_GROUP:
de2eae26	247	seq_puts(s, "group ");
1e2082b5 SW	248	break;
	249	default:
	250	break;
	251	}
	252
	253	seq_printf(s, "%s\n", map->data.configs.group_or_pin);
	254
d96310ae JH	255	pinconf_show_config(s, pctldev, map->data.configs.configs,
d96310ae JH	256	map->data.configs.num_configs);
1e2082b5 SW	257	}
	258
	259	void pinconf_show_setting(struct seq_file *s,
3f713b7c	260	const struct pinctrl_setting *setting)
1e2082b5 SW	261	{
	262	struct pinctrl_dev *pctldev = setting->pctldev;
	263	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
	264	struct pin_desc *desc;
1e2082b5 SW	265
	266	switch (setting->type) {
	267	case PIN_MAP_TYPE_CONFIGS_PIN:
	268	desc = pin_desc_get(setting->pctldev,
	269	setting->data.configs.group_or_pin);
cf9d994d	270	seq_printf(s, "pin %s (%d)", desc->name,
1e2082b5 SW	271	setting->data.configs.group_or_pin);
	272	break;
	273	case PIN_MAP_TYPE_CONFIGS_GROUP:
	274	seq_printf(s, "group %s (%d)",
	275	pctlops->get_group_name(pctldev,
	276	setting->data.configs.group_or_pin),
	277	setting->data.configs.group_or_pin);
	278	break;
	279	default:
	280	break;
	281	}
	282
	283	/*
3ec440e3	284	* FIXME: We should really get the pin controller to dump the config
1e2082b5 SW	285	* values, so they can be decoded to something meaningful.
1e2082b5 SW	286	*/
d96310ae JH	287	pinconf_show_config(s, pctldev, setting->data.configs.configs,
d96310ae JH	288	setting->data.configs.num_configs);
1e2082b5 SW	289	}
1e2082b5 SW	290
ae6b4d85 LW	291	static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
	292	struct seq_file *s, int pin)
	293	{
	294	const struct pinconf_ops *ops = pctldev->desc->confops;
	295
394349f7	296	/* no-op when not using generic pin config */
dd4d01f7	297	pinconf_generic_dump_pins(pctldev, s, NULL, pin);
ae6b4d85 LW	298	if (ops && ops->pin_config_dbg_show)
	299	ops->pin_config_dbg_show(pctldev, s, pin);
	300	}
	301
	302	static int pinconf_pins_show(struct seq_file s, void what)
	303	{
	304	struct pinctrl_dev *pctldev = s->private;
706e8520	305	unsigned i, pin;
ae6b4d85 LW	306
ae6b4d85 LW	307	seq_puts(s, "Pin config settings per pin\n");
2aeefe02	308	seq_puts(s, "Format: pin (name): configs\n");
ae6b4d85	309
42fed7ba	310	mutex_lock(&pctldev->mutex);
57b676f9	311
706e8520	312	/* The pin number can be retrived from the pin controller descriptor */
546edd83	313	for (i = 0; i < pctldev->desc->npins; i++) {
ae6b4d85 LW	314	struct pin_desc *desc;
ae6b4d85 LW	315
706e8520	316	pin = pctldev->desc->pins[i].number;
ae6b4d85	317	desc = pin_desc_get(pctldev, pin);
706e8520	318	/* Skip if we cannot search the pin */
76ce37f0	319	if (!desc)
ae6b4d85 LW	320	continue;
ae6b4d85 LW	321
a672eb5e	322	seq_printf(s, "pin %d (%s): ", pin, desc->name);
ae6b4d85 LW	323
ae6b4d85 LW	324	pinconf_dump_pin(pctldev, s, pin);
47352a63	325	seq_putc(s, '\n');
ae6b4d85 LW	326	}
ae6b4d85 LW	327
42fed7ba	328	mutex_unlock(&pctldev->mutex);
57b676f9	329
ae6b4d85 LW	330	return 0;
	331	}
	332
	333	static void pinconf_dump_group(struct pinctrl_dev *pctldev,
	334	struct seq_file *s, unsigned selector,
	335	const char *gname)
	336	{
	337	const struct pinconf_ops *ops = pctldev->desc->confops;
	338
394349f7	339	/* no-op when not using generic pin config */
dd4d01f7	340	pinconf_generic_dump_pins(pctldev, s, gname, 0);
ae6b4d85 LW	341	if (ops && ops->pin_config_group_dbg_show)
	342	ops->pin_config_group_dbg_show(pctldev, s, selector);
	343	}
	344
	345	static int pinconf_groups_show(struct seq_file s, void what)
	346	{
	347	struct pinctrl_dev *pctldev = s->private;
	348	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
d1e90e9e	349	unsigned ngroups = pctlops->get_groups_count(pctldev);
ae6b4d85 LW	350	unsigned selector = 0;
ae6b4d85 LW	351
ae6b4d85	352	seq_puts(s, "Pin config settings per pin group\n");
2aeefe02	353	seq_puts(s, "Format: group (name): configs\n");
ae6b4d85	354
d1e90e9e	355	while (selector < ngroups) {
ae6b4d85 LW	356	const char *gname = pctlops->get_group_name(pctldev, selector);
ae6b4d85 LW	357
a672eb5e	358	seq_printf(s, "%u (%s): ", selector, gname);
ae6b4d85	359	pinconf_dump_group(pctldev, s, selector, gname);
47352a63	360	seq_putc(s, '\n');
ae6b4d85 LW	361	selector++;
	362	}
	363
	364	return 0;
	365	}
	366
0819dc72 YL	367	DEFINE_SHOW_ATTRIBUTE(pinconf_pins);
0819dc72 YL	368	DEFINE_SHOW_ATTRIBUTE(pinconf_groups);
ae6b4d85 LW	369
	370	void pinconf_init_device_debugfs(struct dentry *devroot,
	371	struct pinctrl_dev *pctldev)
	372	{
47473813	373	debugfs_create_file("pinconf-pins", 0444,
0819dc72	374	devroot, pctldev, &pinconf_pins_fops);
47473813	375	debugfs_create_file("pinconf-groups", 0444,
0819dc72	376	devroot, pctldev, &pinconf_groups_fops);
ae6b4d85 LW	377	}
	378
	379	#endif