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[mirror_ubuntu-bionic-kernel.git] / drivers / pinctrl / pinconf.h

/*
 * Internal interface between the core pin control system and the
 * pin config portions
 *
 * Copyright (C) 2011 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
 */

#ifdef CONFIG_PINCONF

int pinconf_check_ops(struct pinctrl_dev *pctldev);
int pinconf_validate_map(const struct pinctrl_map *map, int i);
int pinconf_map_to_setting(const struct pinctrl_map *map,
			  struct pinctrl_setting *setting);
void pinconf_free_setting(const struct pinctrl_setting *setting);
int pinconf_apply_setting(const struct pinctrl_setting *setting);

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

/*
 * You will only be interested in these if you're using PINCONF
 * so don't supply any stubs for these.
 */
int pin_config_get_for_pin(struct pinctrl_dev *pctldev, unsigned pin,
			   unsigned long *config);
int pin_config_group_get(const char *dev_name, const char *pin_group,
			 unsigned long *config);

#else

static inline int pinconf_check_ops(struct pinctrl_dev *pctldev)
{
	return 0;
}

static inline int pinconf_validate_map(const struct pinctrl_map *map, int i)
{
	return 0;
}

static inline int pinconf_map_to_setting(const struct pinctrl_map *map,
			  struct pinctrl_setting *setting)
{
	return 0;
}

static inline void pinconf_free_setting(const struct pinctrl_setting *setting)
{
}

static inline int pinconf_apply_setting(const struct pinctrl_setting *setting)
{
	return 0;
}

static inline int pinconf_set_config(struct pinctrl_dev *pctldev, unsigned pin,
				     unsigned long *configs, size_t nconfigs)
{
	return -ENOTSUPP;
}

#endif

#if defined(CONFIG_PINCONF) && defined(CONFIG_DEBUG_FS)

void pinconf_show_map(struct seq_file *s, const struct pinctrl_map *map);
void pinconf_show_setting(struct seq_file *s,
			  const struct pinctrl_setting *setting);
void pinconf_init_device_debugfs(struct dentry *devroot,
				 struct pinctrl_dev *pctldev);

#else

static inline void pinconf_show_map(struct seq_file *s,
				    const struct pinctrl_map *map)
{
}

static inline void pinconf_show_setting(struct seq_file *s,
					const struct pinctrl_setting *setting)
{
}

static inline void pinconf_init_device_debugfs(struct dentry *devroot,
					       struct pinctrl_dev *pctldev)
{
}

#endif

/*
 * The following functions are available if the driver uses the generic
 * pin config.
 */

#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS)

void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
			       struct seq_file *s, const char *gname,
			       unsigned pin);

void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
				 struct seq_file *s, unsigned long config);
#else

static inline void pinconf_generic_dump_pins(struct pinctrl_dev *pctldev,
					     struct seq_file *s,
					     const char *gname, unsigned pin)
{
	return;
}

static inline void pinconf_generic_dump_config(struct pinctrl_dev *pctldev,
					       struct seq_file *s,
					       unsigned long config)
{
	return;
}
#endif

#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_OF)
int pinconf_generic_parse_dt_config(struct device_node *np,
				    struct pinctrl_dev *pctldev,
				    unsigned long **configs,
				    unsigned int *nconfigs);
#endif