diff options
Diffstat (limited to 'drivers/pinctrl/core.h')
| -rw-r--r-- | drivers/pinctrl/core.h | 75 |
1 files changed, 40 insertions, 35 deletions
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h index 1c35de59a658..fc513a9cdd4f 100644 --- a/drivers/pinctrl/core.h +++ b/drivers/pinctrl/core.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Core private header for the pin control subsystem * @@ -5,17 +6,25 @@ * Written on behalf of Linaro for ST-Ericsson * * Author: Linus Walleij <linus.walleij@linaro.org> - * - * License terms: GNU General Public License (GPL) version 2 */ #include <linux/kref.h> +#include <linux/list.h> #include <linux/mutex.h> #include <linux/radix-tree.h> -#include <linux/pinctrl/pinconf.h> +#include <linux/types.h> + #include <linux/pinctrl/machine.h> +struct dentry; +struct device; +struct device_node; +struct module; + +struct pinctrl; +struct pinctrl_desc; struct pinctrl_gpio_range; +struct pinctrl_state; /** * struct pinctrl_dev - pin control class device @@ -42,7 +51,7 @@ struct pinctrl_gpio_range; */ struct pinctrl_dev { struct list_head node; - struct pinctrl_desc *desc; + const struct pinctrl_desc *desc; struct radix_tree_root pin_desc_tree; #ifdef CONFIG_GENERIC_PINCTRL_GROUPS struct radix_tree_root pin_group_tree; @@ -102,8 +111,8 @@ struct pinctrl_state { * @func: the function selector to program */ struct pinctrl_setting_mux { - unsigned group; - unsigned func; + unsigned int group; + unsigned int func; }; /** @@ -115,9 +124,9 @@ struct pinctrl_setting_mux { * @num_configs: the number of entries in array @configs */ struct pinctrl_setting_configs { - unsigned group_or_pin; + unsigned int group_or_pin; unsigned long *configs; - unsigned num_configs; + unsigned int num_configs; }; /** @@ -154,7 +163,7 @@ struct pinctrl_setting { * or pin, and each of these will increment the @usecount. * @mux_owner: The name of device that called pinctrl_get(). * @mux_setting: The most recent selected mux setting for this pin, if any. - * @gpio_owner: If pinctrl_request_gpio() was called for this pin, this is + * @gpio_owner: If pinctrl_gpio_request() was called for this pin, this is * the name of the GPIO that "owns" this pin. */ struct pin_desc { @@ -164,10 +173,11 @@ struct pin_desc { void *drv_data; /* These fields only added when supporting pinmux drivers */ #ifdef CONFIG_PINMUX - unsigned mux_usecount; + unsigned int mux_usecount; const char *mux_owner; const struct pinctrl_setting_mux *mux_setting; const char *gpio_owner; + struct mutex mux_lock; #endif }; @@ -179,26 +189,31 @@ struct pin_desc { */ struct pinctrl_maps { struct list_head node; - struct pinctrl_map const *maps; - unsigned num_maps; + const struct pinctrl_map *maps; + unsigned int num_maps; }; #ifdef CONFIG_GENERIC_PINCTRL_GROUPS +#include <linux/pinctrl/pinctrl.h> + /** * struct group_desc - generic pin group descriptor - * @name: name of the pin group - * @pins: array of pins that belong to the group - * @num_pins: number of pins in the group + * @grp: generic data of the pin group (name and pins) * @data: pin controller driver specific data */ struct group_desc { - const char *name; - int *pins; - int num_pins; + struct pingroup grp; void *data; }; +/* Convenient macro to define a generic pin group descriptor */ +#define PINCTRL_GROUP_DESC(_name, _pins, _num_pins, _data) \ +(struct group_desc) { \ + .grp = PINCTRL_PINGROUP(_name, _pins, _num_pins), \ + .data = _data, \ +} + int pinctrl_generic_get_group_count(struct pinctrl_dev *pctldev); const char *pinctrl_generic_get_group_name(struct pinctrl_dev *pctldev, @@ -213,23 +228,17 @@ struct group_desc *pinctrl_generic_get_group(struct pinctrl_dev *pctldev, unsigned int group_selector); int pinctrl_generic_add_group(struct pinctrl_dev *pctldev, const char *name, - int *gpins, int ngpins, void *data); + const unsigned int *pins, int num_pins, void *data); int pinctrl_generic_remove_group(struct pinctrl_dev *pctldev, unsigned int group_selector); -static inline int -pinctrl_generic_remove_last_group(struct pinctrl_dev *pctldev) -{ - return pinctrl_generic_remove_group(pctldev, pctldev->num_groups - 1); -} - #endif /* CONFIG_GENERIC_PINCTRL_GROUPS */ struct pinctrl_dev *get_pinctrl_dev_from_devname(const char *dev_name); struct pinctrl_dev *get_pinctrl_dev_from_of_node(struct device_node *np); int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name); -const char *pin_get_name(struct pinctrl_dev *pctldev, const unsigned pin); +const char *pin_get_name(struct pinctrl_dev *pctldev, const unsigned int pin); int pinctrl_get_group_selector(struct pinctrl_dev *pctldev, const char *pin_group); @@ -243,18 +252,14 @@ extern struct pinctrl_gpio_range * pinctrl_find_gpio_range_from_pin_nolock(struct pinctrl_dev *pctldev, unsigned int pin); -int pinctrl_register_map(struct pinctrl_map const *maps, unsigned num_maps, - bool dup); -void pinctrl_unregister_map(struct pinctrl_map const *map); - extern int pinctrl_force_sleep(struct pinctrl_dev *pctldev); extern int pinctrl_force_default(struct pinctrl_dev *pctldev); extern struct mutex pinctrl_maps_mutex; extern struct list_head pinctrl_maps; -#define for_each_maps(_maps_node_, _i_, _map_) \ - list_for_each_entry(_maps_node_, &pinctrl_maps, node) \ - for (_i_ = 0, _map_ = &_maps_node_->maps[_i_]; \ - _i_ < _maps_node_->num_maps; \ - _i_++, _map_ = &_maps_node_->maps[_i_]) +#define for_each_pin_map(_maps_node_, _map_) \ + list_for_each_entry(_maps_node_, &pinctrl_maps, node) \ + for (unsigned int __i = 0; \ + __i < _maps_node_->num_maps && (_map_ = &_maps_node_->maps[__i]); \ + __i++) |