[linux-2.6-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/array_size.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/slab.h>

#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinctrl.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 int 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 int 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 int 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 int 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 int 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 int ngroups = pctlops->get_groups_count(pctldev);
	unsigned int 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
82cc14c9	12	#include <linux/array_size.h>
ae6b4d85	13	#include <linux/debugfs.h>
82cc14c9 AS	14	#include <linux/device.h>
	15	#include <linux/init.h>
	16	#include <linux/module.h>
ae6b4d85	17	#include <linux/seq_file.h>
82cc14c9 AS	18	#include <linux/slab.h>
82cc14c9 AS	19
ae6b4d85	20	#include <linux/pinctrl/machine.h>
ae6b4d85	21	#include <linux/pinctrl/pinconf.h>
82cc14c9 AS	22	#include <linux/pinctrl/pinctrl.h>
82cc14c9 AS	23
ae6b4d85 LW	24	#include "core.h"
	25	#include "pinconf.h"
	26
2b694250 SW	27	int pinconf_check_ops(struct pinctrl_dev *pctldev)
	28	{
	29	const struct pinconf_ops *ops = pctldev->desc->confops;
	30
2b694250	31	/* We have to be able to config the pins in SOME way */
ad6e1107 JC	32	if (!ops->pin_config_set && !ops->pin_config_group_set) {
	33	dev_err(pctldev->dev,
	34	"pinconf has to be able to set a pins config\n");
2b694250	35	return -EINVAL;
ad6e1107	36	}
2b694250 SW	37	return 0;
	38	}
	39
3f713b7c	40	int pinconf_validate_map(const struct pinctrl_map *map, int i)
1e2082b5 SW	41	{
	42	if (!map->data.configs.group_or_pin) {
	43	pr_err("failed to register map %s (%d): no group/pin given\n",
	44	map->name, i);
	45	return -EINVAL;
	46	}
	47
c95df2db	48	if (!map->data.configs.num_configs \|\|
1e2082b5	49	!map->data.configs.configs) {
c95df2db	50	pr_err("failed to register map %s (%d): no configs given\n",
1e2082b5 SW	51	map->name, i);
	52	return -EINVAL;
	53	}
	54
	55	return 0;
	56	}
	57
7cc4e6b0	58	int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned int pin,
ae6b4d85 LW	59	unsigned long *config)
	60	{
	61	const struct pinconf_ops *ops = pctldev->desc->confops;
	62
	63	if (!ops \|\| !ops->pin_config_get) {
ca67f10f MY	64	dev_dbg(pctldev->dev,
ca67f10f MY	65	"cannot get pin configuration, .pin_config_get missing in driver\n");
c420619d	66	return -ENOTSUPP;
ae6b4d85 LW	67	}
	68
	69	return ops->pin_config_get(pctldev, pin, config);
	70	}
	71
43699dea	72	int pin_config_group_get(const char dev_name, const char pin_group,
ae6b4d85 LW	73	unsigned long *config)
ae6b4d85 LW	74	{
43699dea SW	75	struct pinctrl_dev *pctldev;
43699dea SW	76	const struct pinconf_ops *ops;
57b676f9 SW	77	int selector, ret;
57b676f9 SW	78
9dfac4fd	79	pctldev = get_pinctrl_dev_from_devname(dev_name);
57b676f9 SW	80	if (!pctldev) {
57b676f9 SW	81	ret = -EINVAL;
42fed7ba	82	return ret;
57b676f9	83	}
42fed7ba PC	84
	85	mutex_lock(&pctldev->mutex);
	86
43699dea SW	87	ops = pctldev->desc->confops;
43699dea SW	88
ae6b4d85	89	if (!ops \|\| !ops->pin_config_group_get) {
e4d03050 ME	90	dev_dbg(pctldev->dev,
e4d03050 ME	91	"cannot get configuration for pin group, missing group config get function in driver\n");
c420619d	92	ret = -ENOTSUPP;
57b676f9	93	goto unlock;
ae6b4d85 LW	94	}
	95
	96	selector = pinctrl_get_group_selector(pctldev, pin_group);
57b676f9 SW	97	if (selector < 0) {
	98	ret = selector;
	99	goto unlock;
	100	}
ae6b4d85	101
57b676f9 SW	102	ret = ops->pin_config_group_get(pctldev, selector, config);
	103
	104	unlock:
42fed7ba	105	mutex_unlock(&pctldev->mutex);
57b676f9	106	return ret;
ae6b4d85	107	}
ae6b4d85	108
3f713b7c	109	int pinconf_map_to_setting(const struct pinctrl_map *map,
1e2082b5 SW	110	struct pinctrl_setting *setting)
	111	{
	112	struct pinctrl_dev *pctldev = setting->pctldev;
70b36378	113	int pin;
1e2082b5 SW	114
	115	switch (setting->type) {
	116	case PIN_MAP_TYPE_CONFIGS_PIN:
70b36378 LW	117	pin = pin_get_from_name(pctldev,
	118	map->data.configs.group_or_pin);
	119	if (pin < 0) {
	120	dev_err(pctldev->dev, "could not map pin config for \"%s\"",
	121	map->data.configs.group_or_pin);
	122	return pin;
	123	}
	124	setting->data.configs.group_or_pin = pin;
1e2082b5 SW	125	break;
1e2082b5 SW	126	case PIN_MAP_TYPE_CONFIGS_GROUP:
70b36378 LW	127	pin = pinctrl_get_group_selector(pctldev,
	128	map->data.configs.group_or_pin);
	129	if (pin < 0) {
	130	dev_err(pctldev->dev, "could not map group config for \"%s\"",
	131	map->data.configs.group_or_pin);
	132	return pin;
	133	}
	134	setting->data.configs.group_or_pin = pin;
1e2082b5 SW	135	break;
	136	default:
	137	return -EINVAL;
	138	}
	139
	140	setting->data.configs.num_configs = map->data.configs.num_configs;
	141	setting->data.configs.configs = map->data.configs.configs;
	142
	143	return 0;
	144	}
	145
3f713b7c	146	void pinconf_free_setting(const struct pinctrl_setting *setting)
1e2082b5 SW	147	{
	148	}
	149
3f713b7c	150	int pinconf_apply_setting(const struct pinctrl_setting *setting)
1e2082b5 SW	151	{
	152	struct pinctrl_dev *pctldev = setting->pctldev;
	153	const struct pinconf_ops *ops = pctldev->desc->confops;
03b054e9	154	int ret;
1e2082b5 SW	155
	156	if (!ops) {
	157	dev_err(pctldev->dev, "missing confops\n");
	158	return -EINVAL;
	159	}
	160
	161	switch (setting->type) {
	162	case PIN_MAP_TYPE_CONFIGS_PIN:
	163	if (!ops->pin_config_set) {
	164	dev_err(pctldev->dev, "missing pin_config_set op\n");
	165	return -EINVAL;
	166	}
03b054e9 SY	167	ret = ops->pin_config_set(pctldev,
	168	setting->data.configs.group_or_pin,
	169	setting->data.configs.configs,
	170	setting->data.configs.num_configs);
	171	if (ret < 0) {
	172	dev_err(pctldev->dev,
	173	"pin_config_set op failed for pin %d\n",
	174	setting->data.configs.group_or_pin);
	175	return ret;
1e2082b5 SW	176	}
	177	break;
	178	case PIN_MAP_TYPE_CONFIGS_GROUP:
	179	if (!ops->pin_config_group_set) {
	180	dev_err(pctldev->dev,
	181	"missing pin_config_group_set op\n");
	182	return -EINVAL;
	183	}
03b054e9 SY	184	ret = ops->pin_config_group_set(pctldev,
	185	setting->data.configs.group_or_pin,
	186	setting->data.configs.configs,
	187	setting->data.configs.num_configs);
	188	if (ret < 0) {
	189	dev_err(pctldev->dev,
	190	"pin_config_group_set op failed for group %d\n",
	191	setting->data.configs.group_or_pin);
	192	return ret;
1e2082b5 SW	193	}
	194	break;
	195	default:
	196	return -EINVAL;
	197	}
	198
	199	return 0;
	200	}
	201
7cc4e6b0	202	int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned int pin,
15381bc7 MW	203	unsigned long *configs, size_t nconfigs)
	204	{
	205	const struct pinconf_ops *ops;
	206
	207	ops = pctldev->desc->confops;
17a51248	208	if (!ops \|\| !ops->pin_config_set)
15381bc7 MW	209	return -ENOTSUPP;
	210
	211	return ops->pin_config_set(pctldev, pin, configs, nconfigs);
	212	}
	213
ae6b4d85 LW	214	#ifdef CONFIG_DEBUG_FS
ae6b4d85 LW	215
6de52c15	216	static void pinconf_show_config(struct seq_file s, struct pinctrl_dev pctldev,
7cc4e6b0	217	unsigned long *configs, unsigned int num_configs)
1e2082b5	218	{
6cb41587	219	const struct pinconf_ops *confops;
1e2082b5 SW	220	int i;
1e2082b5 SW	221
6cb41587 SW	222	if (pctldev)
	223	confops = pctldev->desc->confops;
	224	else
	225	confops = NULL;
	226
d96310ae JH	227	for (i = 0; i < num_configs; i++) {
	228	seq_puts(s, "config ");
	229	if (confops && confops->pin_config_config_dbg_show)
	230	confops->pin_config_config_dbg_show(pctldev, s,
	231	configs[i]);
	232	else
	233	seq_printf(s, "%08lx", configs[i]);
47352a63	234	seq_putc(s, '\n');
d96310ae JH	235	}
	236	}
	237
3f713b7c	238	void pinconf_show_map(struct seq_file s, const struct pinctrl_map map)
d96310ae JH	239	{
	240	struct pinctrl_dev *pctldev;
	241
	242	pctldev = get_pinctrl_dev_from_devname(map->ctrl_dev_name);
	243
1e2082b5 SW	244	switch (map->type) {
1e2082b5 SW	245	case PIN_MAP_TYPE_CONFIGS_PIN:
de2eae26	246	seq_puts(s, "pin ");
1e2082b5 SW	247	break;
1e2082b5 SW	248	case PIN_MAP_TYPE_CONFIGS_GROUP:
de2eae26	249	seq_puts(s, "group ");
1e2082b5 SW	250	break;
	251	default:
	252	break;
	253	}
	254
	255	seq_printf(s, "%s\n", map->data.configs.group_or_pin);
	256
d96310ae JH	257	pinconf_show_config(s, pctldev, map->data.configs.configs,
d96310ae JH	258	map->data.configs.num_configs);
1e2082b5 SW	259	}
	260
	261	void pinconf_show_setting(struct seq_file *s,
3f713b7c	262	const struct pinctrl_setting *setting)
1e2082b5 SW	263	{
	264	struct pinctrl_dev *pctldev = setting->pctldev;
	265	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
	266	struct pin_desc *desc;
1e2082b5 SW	267
	268	switch (setting->type) {
	269	case PIN_MAP_TYPE_CONFIGS_PIN:
	270	desc = pin_desc_get(setting->pctldev,
	271	setting->data.configs.group_or_pin);
cf9d994d	272	seq_printf(s, "pin %s (%d)", desc->name,
1e2082b5 SW	273	setting->data.configs.group_or_pin);
	274	break;
	275	case PIN_MAP_TYPE_CONFIGS_GROUP:
	276	seq_printf(s, "group %s (%d)",
	277	pctlops->get_group_name(pctldev,
	278	setting->data.configs.group_or_pin),
	279	setting->data.configs.group_or_pin);
	280	break;
	281	default:
	282	break;
	283	}
	284
	285	/*
3ec440e3	286	* FIXME: We should really get the pin controller to dump the config
1e2082b5 SW	287	* values, so they can be decoded to something meaningful.
1e2082b5 SW	288	*/
d96310ae JH	289	pinconf_show_config(s, pctldev, setting->data.configs.configs,
d96310ae JH	290	setting->data.configs.num_configs);
1e2082b5 SW	291	}
1e2082b5 SW	292
ae6b4d85 LW	293	static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
	294	struct seq_file *s, int pin)
	295	{
	296	const struct pinconf_ops *ops = pctldev->desc->confops;
	297
394349f7	298	/* no-op when not using generic pin config */
dd4d01f7	299	pinconf_generic_dump_pins(pctldev, s, NULL, pin);
ae6b4d85 LW	300	if (ops && ops->pin_config_dbg_show)
	301	ops->pin_config_dbg_show(pctldev, s, pin);
	302	}
	303
	304	static int pinconf_pins_show(struct seq_file s, void what)
	305	{
	306	struct pinctrl_dev *pctldev = s->private;
7cc4e6b0	307	unsigned int i, pin;
ae6b4d85 LW	308
ae6b4d85 LW	309	seq_puts(s, "Pin config settings per pin\n");
2aeefe02	310	seq_puts(s, "Format: pin (name): configs\n");
ae6b4d85	311
42fed7ba	312	mutex_lock(&pctldev->mutex);
57b676f9	313
706e8520	314	/* The pin number can be retrived from the pin controller descriptor */
546edd83	315	for (i = 0; i < pctldev->desc->npins; i++) {
ae6b4d85 LW	316	struct pin_desc *desc;
ae6b4d85 LW	317
706e8520	318	pin = pctldev->desc->pins[i].number;
ae6b4d85	319	desc = pin_desc_get(pctldev, pin);
706e8520	320	/* Skip if we cannot search the pin */
76ce37f0	321	if (!desc)
ae6b4d85 LW	322	continue;
ae6b4d85 LW	323
a672eb5e	324	seq_printf(s, "pin %d (%s): ", pin, desc->name);
ae6b4d85 LW	325
ae6b4d85 LW	326	pinconf_dump_pin(pctldev, s, pin);
47352a63	327	seq_putc(s, '\n');
ae6b4d85 LW	328	}
ae6b4d85 LW	329
42fed7ba	330	mutex_unlock(&pctldev->mutex);
57b676f9	331
ae6b4d85 LW	332	return 0;
	333	}
	334
	335	static void pinconf_dump_group(struct pinctrl_dev *pctldev,
7cc4e6b0	336	struct seq_file *s, unsigned int selector,
ae6b4d85 LW	337	const char *gname)
	338	{
	339	const struct pinconf_ops *ops = pctldev->desc->confops;
	340
394349f7	341	/* no-op when not using generic pin config */
dd4d01f7	342	pinconf_generic_dump_pins(pctldev, s, gname, 0);
ae6b4d85 LW	343	if (ops && ops->pin_config_group_dbg_show)
	344	ops->pin_config_group_dbg_show(pctldev, s, selector);
	345	}
	346
	347	static int pinconf_groups_show(struct seq_file s, void what)
	348	{
	349	struct pinctrl_dev *pctldev = s->private;
	350	const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
7cc4e6b0 AS	351	unsigned int ngroups = pctlops->get_groups_count(pctldev);
7cc4e6b0 AS	352	unsigned int selector = 0;
ae6b4d85	353
ae6b4d85	354	seq_puts(s, "Pin config settings per pin group\n");
2aeefe02	355	seq_puts(s, "Format: group (name): configs\n");
ae6b4d85	356
d1e90e9e	357	while (selector < ngroups) {
ae6b4d85 LW	358	const char *gname = pctlops->get_group_name(pctldev, selector);
ae6b4d85 LW	359
a672eb5e	360	seq_printf(s, "%u (%s): ", selector, gname);
ae6b4d85	361	pinconf_dump_group(pctldev, s, selector, gname);
47352a63	362	seq_putc(s, '\n');
ae6b4d85 LW	363	selector++;
	364	}
	365
	366	return 0;
	367	}
	368
0819dc72 YL	369	DEFINE_SHOW_ATTRIBUTE(pinconf_pins);
0819dc72 YL	370	DEFINE_SHOW_ATTRIBUTE(pinconf_groups);
ae6b4d85 LW	371
	372	void pinconf_init_device_debugfs(struct dentry *devroot,
	373	struct pinctrl_dev *pctldev)
	374	{
47473813	375	debugfs_create_file("pinconf-pins", 0444,
0819dc72	376	devroot, pctldev, &pinconf_pins_fops);
47473813	377	debugfs_create_file("pinconf-groups", 0444,
0819dc72	378	devroot, pctldev, &pinconf_groups_fops);
ae6b4d85 LW	379	}
	380
	381	#endif