diff options
Diffstat (limited to 'include/linux/pinctrl/pinctrl.h')
| -rw-r--r-- | include/linux/pinctrl/pinctrl.h | 72 |
1 files changed, 58 insertions, 14 deletions
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 04c011038f3..cc8e1aff0e2 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -15,23 +15,29 @@ #ifdef CONFIG_PINCTRL #include <linux/radix-tree.h> -#include <linux/spinlock.h> #include <linux/list.h> #include <linux/seq_file.h> +#include <linux/pinctrl/pinctrl-state.h> +struct device; struct pinctrl_dev; +struct pinctrl_map; struct pinmux_ops; +struct pinconf_ops; struct gpio_chip; +struct device_node; /** * struct pinctrl_pin_desc - boards/machines provide information on their * pins, pads or other muxable units in this struct * @number: unique pin number from the global pin number space * @name: a name for this pin + * @drv_data: driver-defined per-pin data. pinctrl core does not touch this */ struct pinctrl_pin_desc { unsigned number; const char *name; + void *drv_data; }; /* Convenience macro to define a single named or anonymous pin descriptor */ @@ -45,6 +51,8 @@ struct pinctrl_pin_desc { * @name: a name for the chip in this range * @id: an ID number for the chip in this range * @base: base offset of the GPIO range + * @pin_base: base pin number of the GPIO range if pins == NULL + * @pins: enumeration of pins in GPIO range or NULL * @npins: number of pins in the GPIO range, including the base number * @gc: an optional pointer to a gpio_chip */ @@ -53,6 +61,8 @@ struct pinctrl_gpio_range { const char *name; unsigned int id; unsigned int base; + unsigned int pin_base; + unsigned const *pins; unsigned int npins; struct gpio_chip *gc; }; @@ -60,17 +70,24 @@ struct pinctrl_gpio_range { /** * struct pinctrl_ops - global pin control operations, to be implemented by * pin controller drivers. - * @list_groups: list the number of selectable named groups available - * in this pinmux driver, the core will begin on 0 and call this - * repeatedly as long as it returns >= 0 to enumerate the groups + * @get_groups_count: Returns the count of total number of groups registered. * @get_group_name: return the group name of the pin group * @get_group_pins: return an array of pins corresponding to a certain * group selector @pins, and the size of the array in @num_pins * @pin_dbg_show: optional debugfs display hook that will provide per-device * info for a certain pin in debugfs + * @dt_node_to_map: parse a device tree "pin configuration node", and create + * mapping table entries for it. These are returned through the @map and + * @num_maps output parameters. This function is optional, and may be + * omitted for pinctrl drivers that do not support device tree. + * @dt_free_map: free mapping table entries created via @dt_node_to_map. The + * top-level @map pointer must be freed, along with any dynamically + * allocated members of the mapping table entries themselves. This + * function is optional, and may be omitted for pinctrl drivers that do + * not support device tree. */ struct pinctrl_ops { - int (*list_groups) (struct pinctrl_dev *pctldev, unsigned selector); + int (*get_groups_count) (struct pinctrl_dev *pctldev); const char *(*get_group_name) (struct pinctrl_dev *pctldev, unsigned selector); int (*get_group_pins) (struct pinctrl_dev *pctldev, @@ -79,6 +96,11 @@ struct pinctrl_ops { unsigned *num_pins); void (*pin_dbg_show) (struct pinctrl_dev *pctldev, struct seq_file *s, unsigned offset); + int (*dt_node_to_map) (struct pinctrl_dev *pctldev, + struct device_node *np_config, + struct pinctrl_map **map, unsigned *num_maps); + void (*dt_free_map) (struct pinctrl_dev *pctldev, + struct pinctrl_map *map, unsigned num_maps); }; /** @@ -89,22 +111,20 @@ struct pinctrl_ops { * this pin controller * @npins: number of descriptors in the array, usually just ARRAY_SIZE() * of the pins field above - * @maxpin: since pin spaces may be sparse, there can he "holes" in the - * pin range, this attribute gives the maximum pin number in the - * total range. This should not be lower than npins for example, - * but may be equal to npins if you have no holes in the pin range. * @pctlops: pin control operation vtable, to support global concepts like * grouping of pins, this is optional. - * @pmxops: pinmux operation vtable, if you support pinmuxing in your driver + * @pmxops: pinmux operations vtable, if you support pinmuxing in your driver + * @confops: pin config operations vtable, if you support pin configuration in + * your driver * @owner: module providing the pin controller, used for refcounting */ struct pinctrl_desc { const char *name; struct pinctrl_pin_desc const *pins; unsigned int npins; - unsigned int maxpin; - struct pinctrl_ops *pctlops; - struct pinmux_ops *pmxops; + const struct pinctrl_ops *pctlops; + const struct pinmux_ops *pmxops; + const struct pinconf_ops *confops; struct module *owner; }; @@ -115,15 +135,39 @@ extern void pinctrl_unregister(struct pinctrl_dev *pctldev); extern bool pin_is_valid(struct pinctrl_dev *pctldev, int pin); extern void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range); +extern void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *ranges, + unsigned nranges); extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range); + +extern struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname, + struct pinctrl_gpio_range *range); +extern struct pinctrl_gpio_range * +pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev, + unsigned int pin); +extern int pinctrl_get_group_pins(struct pinctrl_dev *pctldev, + const char *pin_group, const unsigned **pins, + unsigned *num_pins); + +#ifdef CONFIG_OF +extern struct pinctrl_dev *of_pinctrl_get(struct device_node *np); +#else +static inline +struct pinctrl_dev *of_pinctrl_get(struct device_node *np) +{ + return NULL; +} +#endif /* CONFIG_OF */ + extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); +extern const char *pinctrl_dev_get_devname(struct pinctrl_dev *pctldev); extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); #else struct pinctrl_dev; -/* Sufficiently stupid default function when pinctrl is not in use */ +/* Sufficiently stupid default functions when pinctrl is not in use */ static inline bool pin_is_valid(struct pinctrl_dev *pctldev, int pin) { return pin >= 0; |