[linux-2.6-block.git] / drivers / pinctrl / pinconf.c

/*
 * 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>
 *
 * License terms: GNU General Public License (GPL) version 2
 */
#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", S_IFREG | S_IRUGO,
			    devroot, pctldev, &pinconf_pins_fops);
	debugfs_create_file("pinconf-groups", S_IFREG | S_IRUGO,
			    devroot, pctldev, &pinconf_groups_fops);
}

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