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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* 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>
*/
#ifndef __LINUX_PINCTRL_CONSUMER_H
#define __LINUX_PINCTRL_CONSUMER_H
#include <linux/err.h>
#include <linux/types.h>
#include <linux/pinctrl/pinctrl-state.h>
struct device;
struct gpio_chip;
/* This struct is private to the core and should be regarded as a cookie */
struct pinctrl;
struct pinctrl_state;
#ifdef CONFIG_PINCTRL
/* External interface to pin control */
bool pinctrl_gpio_can_use_line(struct gpio_chip *gc, unsigned int offset);
int pinctrl_gpio_request(struct gpio_chip *gc, unsigned int offset);
void pinctrl_gpio_free(struct gpio_chip *gc, unsigned int offset);
int pinctrl_gpio_direction_input(struct gpio_chip *gc,
unsigned int offset);
int pinctrl_gpio_direction_output(struct gpio_chip *gc,
unsigned int offset);
int pinctrl_gpio_set_config(struct gpio_chip *gc, unsigned int offset,
unsigned long config);
struct pinctrl * __must_check pinctrl_get(struct device *dev);
void pinctrl_put(struct pinctrl *p);
struct pinctrl_state * __must_check pinctrl_lookup_state(struct pinctrl *p,
const char *name);
int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s);
struct pinctrl * __must_check devm_pinctrl_get(struct device *dev);
void devm_pinctrl_put(struct pinctrl *p);
int pinctrl_select_default_state(struct device *dev);
#ifdef CONFIG_PM
int pinctrl_pm_select_default_state(struct device *dev);
int pinctrl_pm_select_sleep_state(struct device *dev);
int pinctrl_pm_select_idle_state(struct device *dev);
#else
static inline int pinctrl_pm_select_default_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_sleep_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_idle_state(struct device *dev)
{
return 0;
}
#endif
#else /* !CONFIG_PINCTRL */
static inline bool
pinctrl_gpio_can_use_line(struct gpio_chip *gc, unsigned int offset)
{
return true;
}
static inline int
pinctrl_gpio_request(struct gpio_chip *gc, unsigned int offset)
{
return 0;
}
static inline void
pinctrl_gpio_free(struct gpio_chip *gc, unsigned int offset)
{
}
static inline int
pinctrl_gpio_direction_input(struct gpio_chip *gc, unsigned int offset)
{
return 0;
}
static inline int
pinctrl_gpio_direction_output(struct gpio_chip *gc, unsigned int offset)
{
return 0;
}
static inline int
pinctrl_gpio_set_config(struct gpio_chip *gc, unsigned int offset,
unsigned long config)
{
return 0;
}
static inline struct pinctrl * __must_check pinctrl_get(struct device *dev)
{
return NULL;
}
static inline void pinctrl_put(struct pinctrl *p)
{
}
static inline struct pinctrl_state * __must_check pinctrl_lookup_state(struct pinctrl *p,
const char *name)
{
return NULL;
}
static inline int pinctrl_select_state(struct pinctrl *p,
struct pinctrl_state *s)
{
return 0;
}
static inline struct pinctrl * __must_check devm_pinctrl_get(struct device *dev)
{
return NULL;
}
static inline void devm_pinctrl_put(struct pinctrl *p)
{
}
static inline int pinctrl_select_default_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_default_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_sleep_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_idle_state(struct device *dev)
{
return 0;
}
#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;
}
static inline struct pinctrl * __must_check pinctrl_get_select_default(struct device *dev)
{
return pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
}
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;
}
static inline struct pinctrl * __must_check devm_pinctrl_get_select_default(struct device *dev)
{
return devm_pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
}
#endif /* __LINUX_PINCTRL_CONSUMER_H */
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