Release 4.7 include/linux/pinctrl/consumer.h

Directory: include/linux/pinctrl
/*
 * Consumer interface the pin control subsystem
 *
 * Copyright (C) 2012 ST-Ericsson SA
 * Written on behalf of Linaro for ST-Ericsson
 * Based on bits of regulator core, gpio core and clk core
 *
 * Author: Linus Walleij <linus.walleij@linaro.org>
 *
 * License terms: GNU General Public License (GPL) version 2
 */
#ifndef __LINUX_PINCTRL_CONSUMER_H

#define __LINUX_PINCTRL_CONSUMER_H

#include <linux/err.h>
#include <linux/list.h>
#include <linux/seq_file.h>
#include <linux/pinctrl/pinctrl-state.h>

/* This struct is private to the core and should be regarded as a cookie */
struct pinctrl;
struct pinctrl_state;
struct device;

#ifdef CONFIG_PINCTRL

/* External interface to pin control */
extern int pinctrl_request_gpio(unsigned gpio);
extern void pinctrl_free_gpio(unsigned gpio);
extern int pinctrl_gpio_direction_input(unsigned gpio);
extern int pinctrl_gpio_direction_output(unsigned gpio);

extern struct pinctrl * __must_check pinctrl_get(struct device *dev);
extern void pinctrl_put(struct pinctrl *p);
extern struct pinctrl_state * __must_check pinctrl_lookup_state(
							struct pinctrl *p,
							const char *name);
extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s);

extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev);
extern void devm_pinctrl_put(struct pinctrl *p);

#ifdef CONFIG_PM
extern int pinctrl_pm_select_default_state(struct device *dev);
extern int pinctrl_pm_select_sleep_state(struct device *dev);
extern int pinctrl_pm_select_idle_state(struct device *dev);
#else


static inline int pinctrl_pm_select_default_state(struct device *dev)
{
	return 0;
}
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static inline int pinctrl_pm_select_sleep_state(struct device *dev)
{
	return 0;
}
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static inline int pinctrl_pm_select_idle_state(struct device *dev)
{
	return 0;
}
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#endif

#else /* !CONFIG_PINCTRL */



static inline int pinctrl_request_gpio(unsigned gpio)
{
	return 0;
}

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static inline void pinctrl_free_gpio(unsigned gpio)
{
}

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static inline int pinctrl_gpio_direction_input(unsigned gpio)
{
	return 0;
}

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static inline int pinctrl_gpio_direction_output(unsigned gpio)
{
	return 0;
}

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static inline struct pinctrl * __must_check pinctrl_get(struct device *dev)
{
	return NULL;
}

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static inline void pinctrl_put(struct pinctrl *p)
{
}

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static inline struct pinctrl_state * __must_check pinctrl_lookup_state(
							struct pinctrl *p,
							const char *name)
{
	return NULL;
}

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static inline int pinctrl_select_state(struct pinctrl *p,
				       struct pinctrl_state *s)
{
	return 0;
}

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static inline struct pinctrl * __must_check devm_pinctrl_get(struct device *dev)
{
	return NULL;
}

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static inline void devm_pinctrl_put(struct pinctrl *p)
{
}

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static inline int pinctrl_pm_select_default_state(struct device *dev)
{
	return 0;
}

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static inline int pinctrl_pm_select_sleep_state(struct device *dev)
{
	return 0;
}

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static inline int pinctrl_pm_select_idle_state(struct device *dev)
{
	return 0;
}

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#endif /* CONFIG_PINCTRL */



static inline struct pinctrl * __must_check pinctrl_get_select(
					struct device *dev, const char *name)
{
	struct pinctrl *p;
	struct pinctrl_state *s;
	int ret;

	p = pinctrl_get(dev);
	if (IS_ERR(p))
		return p;

	s = pinctrl_lookup_state(p, name);
	if (IS_ERR(s)) {
		pinctrl_put(p);
		return ERR_CAST(s);
	}

	ret = pinctrl_select_state(p, s);
	if (ret < 0) {
		pinctrl_put(p);
		return ERR_PTR(ret);
	}

	return p;
}

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static inline struct pinctrl * __must_check pinctrl_get_select_default(
					struct device *dev)
{
	return pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
}

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static inline struct pinctrl * __must_check devm_pinctrl_get_select(
					struct device *dev, const char *name)
{
	struct pinctrl *p;
	struct pinctrl_state *s;
	int ret;

	p = devm_pinctrl_get(dev);
	if (IS_ERR(p))
		return p;

	s = pinctrl_lookup_state(p, name);
	if (IS_ERR(s)) {
		devm_pinctrl_put(p);
		return ERR_CAST(s);
	}

	ret = pinctrl_select_state(p, s);
	if (ret < 0) {
		devm_pinctrl_put(p);
		return ERR_PTR(ret);
	}

	return p;
}

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static inline struct pinctrl * __must_check devm_pinctrl_get_select_default(
					struct device *dev)
{
	return devm_pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
}

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#endif /* __LINUX_PINCTRL_CONSUMER_H */
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  Directory: include/linux/pinctrl

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
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cregit-Linux how code gets into the kernel

Release 4.7 include/linux/pinctrl/consumer.h

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