diff options
Diffstat (limited to 'drivers/pinctrl/pinmux.h')
| -rw-r--r-- | drivers/pinctrl/pinmux.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinmux.h b/drivers/pinctrl/pinmux.h new file mode 100644 index 0000000000..ea6f99c24a --- /dev/null +++ b/drivers/pinctrl/pinmux.h @@ -0,0 +1,179 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Internal interface between the core pin control system and the + * pinmux 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> + */ + +#include <linux/types.h> + +struct dentry; +struct seq_file; + +struct pinctrl_dev; +struct pinctrl_gpio_range; +struct pinctrl_map; +struct pinctrl_setting; + +#ifdef CONFIG_PINMUX + +int pinmux_check_ops(struct pinctrl_dev *pctldev); + +int pinmux_validate_map(const struct pinctrl_map *map, int i); + +bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned pin); + +int pinmux_request_gpio(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned pin, unsigned gpio); +void pinmux_free_gpio(struct pinctrl_dev *pctldev, unsigned pin, + struct pinctrl_gpio_range *range); +int pinmux_gpio_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned pin, bool input); + +int pinmux_map_to_setting(const struct pinctrl_map *map, + struct pinctrl_setting *setting); +void pinmux_free_setting(const struct pinctrl_setting *setting); +int pinmux_enable_setting(const struct pinctrl_setting *setting); +void pinmux_disable_setting(const struct pinctrl_setting *setting); + +#else + +static inline int pinmux_check_ops(struct pinctrl_dev *pctldev) +{ + return 0; +} + +static inline int pinmux_validate_map(const struct pinctrl_map *map, int i) +{ + return 0; +} + +static inline bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, + unsigned pin) +{ + return true; +} + +static inline int pinmux_request_gpio(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned pin, unsigned gpio) +{ + return 0; +} + +static inline void pinmux_free_gpio(struct pinctrl_dev *pctldev, + unsigned pin, + struct pinctrl_gpio_range *range) +{ +} + +static inline int pinmux_gpio_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned pin, bool input) +{ + return 0; +} + +static inline int pinmux_map_to_setting(const struct pinctrl_map *map, + struct pinctrl_setting *setting) +{ + return 0; +} + +static inline void pinmux_free_setting(const struct pinctrl_setting *setting) +{ +} + +static inline int pinmux_enable_setting(const struct pinctrl_setting *setting) +{ + return 0; +} + +static inline void pinmux_disable_setting(const struct pinctrl_setting *setting) +{ +} + +#endif + +#if defined(CONFIG_PINMUX) && defined(CONFIG_DEBUG_FS) + +void pinmux_show_map(struct seq_file *s, const struct pinctrl_map *map); +void pinmux_show_setting(struct seq_file *s, + const struct pinctrl_setting *setting); +void pinmux_init_device_debugfs(struct dentry *devroot, + struct pinctrl_dev *pctldev); + +#else + +static inline void pinmux_show_map(struct seq_file *s, + const struct pinctrl_map *map) +{ +} + +static inline void pinmux_show_setting(struct seq_file *s, + const struct pinctrl_setting *setting) +{ +} + +static inline void pinmux_init_device_debugfs(struct dentry *devroot, + struct pinctrl_dev *pctldev) +{ +} + +#endif + +#ifdef CONFIG_GENERIC_PINMUX_FUNCTIONS + +/** + * struct function_desc - generic function descriptor + * @name: name of the function + * @group_names: array of pin group names + * @num_group_names: number of pin group names + * @data: pin controller driver specific data + */ +struct function_desc { + const char *name; + const char * const *group_names; + int num_group_names; + void *data; +}; + +int pinmux_generic_get_function_count(struct pinctrl_dev *pctldev); + +const char * +pinmux_generic_get_function_name(struct pinctrl_dev *pctldev, + unsigned int selector); + +int pinmux_generic_get_function_groups(struct pinctrl_dev *pctldev, + unsigned int selector, + const char * const **groups, + unsigned * const num_groups); + +struct function_desc *pinmux_generic_get_function(struct pinctrl_dev *pctldev, + unsigned int selector); + +int pinmux_generic_add_function(struct pinctrl_dev *pctldev, + const char *name, + const char * const *groups, + unsigned const num_groups, + void *data); + +int pinmux_generic_remove_function(struct pinctrl_dev *pctldev, + unsigned int selector); + +void pinmux_generic_free_functions(struct pinctrl_dev *pctldev); + +#else + +static inline void pinmux_generic_free_functions(struct pinctrl_dev *pctldev) +{ +} + +#endif /* CONFIG_GENERIC_PINMUX_FUNCTIONS */ |