diff options
Diffstat (limited to 'drivers/pinctrl/core.h')
| -rw-r--r-- | drivers/pinctrl/core.h | 49 |
1 files changed, 46 insertions, 3 deletions
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h index 17ecf651b12..75476b3d87d 100644 --- a/drivers/pinctrl/core.h +++ b/drivers/pinctrl/core.h @@ -9,6 +9,7 @@ * License terms: GNU General Public License (GPL) version 2 */ +#include <linux/kref.h> #include <linux/mutex.h> #include <linux/radix-tree.h> #include <linux/pinctrl/pinconf.h> @@ -30,6 +31,9 @@ struct pinctrl_gpio_range; * @driver_data: driver data for drivers registering to the pin controller * subsystem * @p: result of pinctrl_get() for this device + * @hog_default: default state for pins hogged by this device + * @hog_sleep: sleep state for pins hogged by this device + * @mutex: mutex taken on each pin controller specific action * @device_root: debugfs root for this device */ struct pinctrl_dev { @@ -41,6 +45,9 @@ struct pinctrl_dev { struct module *owner; void *driver_data; struct pinctrl *p; + struct pinctrl_state *hog_default; + struct pinctrl_state *hog_sleep; + struct mutex mutex; #ifdef CONFIG_DEBUG_FS struct dentry *device_root; #endif @@ -52,17 +59,22 @@ struct pinctrl_dev { * @dev: the device using this pin control handle * @states: a list of states for this device * @state: the current state + * @dt_maps: the mapping table chunks dynamically parsed from device tree for + * this device, if any + * @users: reference count */ struct pinctrl { struct list_head node; struct device *dev; struct list_head states; struct pinctrl_state *state; + struct list_head dt_maps; + struct kref users; }; /** * struct pinctrl_state - a pinctrl state for a device - * @node: list not for struct pinctrl's @states field + * @node: list node for struct pinctrl's @states field * @name: the name of this state * @settings: a list of settings for this state */ @@ -100,13 +112,16 @@ struct pinctrl_setting_configs { * struct pinctrl_setting - an individual mux or config setting * @node: list node for struct pinctrl_settings's @settings field * @type: the type of setting - * @pctldev: pin control device handling to be programmed + * @pctldev: pin control device handling to be programmed. Not used for + * PIN_MAP_TYPE_DUMMY_STATE. + * @dev_name: the name of the device using this state * @data: Data specific to the setting type */ struct pinctrl_setting { struct list_head node; enum pinctrl_map_type type; struct pinctrl_dev *pctldev; + const char *dev_name; union { struct pinctrl_setting_mux mux; struct pinctrl_setting_configs configs; @@ -142,8 +157,22 @@ struct pin_desc { #endif }; +/** + * struct pinctrl_maps - a list item containing part of the mapping table + * @node: mapping table list node + * @maps: array of mapping table entries + * @num_maps: the number of entries in @maps + */ +struct pinctrl_maps { + struct list_head node; + struct pinctrl_map const *maps; + unsigned num_maps; +}; + 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); int pinctrl_get_group_selector(struct pinctrl_dev *pctldev, const char *pin_group); @@ -153,4 +182,18 @@ static inline struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, return radix_tree_lookup(&pctldev->pin_desc_tree, pin); } -extern struct mutex pinctrl_mutex; +int pinctrl_register_map(struct pinctrl_map const *maps, unsigned num_maps, + bool dup, bool locked); +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_]) |