linux - Contrib clone of linux

Age	Commit message (Expand)	Author
2019-05-30	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194	Thomas Gleixner
2019-05-17	net: caif: fix the value of size argument of snprintf	swkhack
2013-04-23	caif: Remove my bouncing email address.	sjur.brandeland@stericsson.com
2012-03-11	caif: Fix for a race in socket transmit with flow control.	Dmitry Tarnyagin
2011-08-28	caif: Remove OOM messages, use kzalloc	Joe Perches
2010-11-03	caif: Bugfix for socket priority, bindtodev and dbg channel.	André Carvalho de Matos
2010-09-06	net/caif: Use pr_fmt	Joe Perches
2010-06-20	caif: Bugfix not all services uses flow-ctrl.	Sjur Braendeland
2010-03-30	net-caif: add CAIF core protocol stack	Sjur Braendeland

/* SPDX-License-Identifier: GPL-2.0-only */ /* * Core private header for the pin control subsystem * * Copyright (C) 2011 ST-Ericsson SA * Written on behalf of Linaro for ST-Ericsson * * Author: Linus Walleij <linus.walleij@linaro.org> */ #include <linux/kref.h> #include <linux/mutex.h> #include <linux/radix-tree.h> #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/machine.h> struct pinctrl_gpio_range; /** * struct pinctrl_dev - pin control class device * @node: node to include this pin controller in the global pin controller list * @desc: the pin controller descriptor supplied when initializing this pin * controller * @pin_desc_tree: each pin descriptor for this pin controller is stored in * this radix tree * @pin_group_tree: optionally each pin group can be stored in this radix tree * @num_groups: optionally number of groups can be kept here * @pin_function_tree: optionally each function can be stored in this radix tree * @num_functions: optionally number of functions can be kept here * @gpio_ranges: a list of GPIO ranges that is handled by this pin controller, * ranges are added to this list at runtime * @dev: the device entry for this pin controller * @owner: module providing the pin controller, used for refcounting * @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 { struct list_head node; struct pinctrl_desc *desc; struct radix_tree_root pin_desc_tree; #ifdef CONFIG_GENERIC_PINCTRL_GROUPS struct radix_tree_root pin_group_tree; unsigned int num_groups; #endif #ifdef CONFIG_GENERIC_PINMUX_FUNCTIONS struct radix_tree_root pin_function_tree; unsigned int num_functions; #endif struct list_head gpio_ranges; struct device *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 }; /** * struct pinctrl - per-device pin control state holder * @node: global list node * @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 node for struct pinctrl's @states field * @name: the name of this state * @settings: a list of settings for this state */ struct pinctrl_state { struct list_head node; const char *name; struct list_head settings; }; /** * struct pinctrl_setting_mux - setting data for MAP_TYPE_MUX_GROUP * @group: the group selector to program * @func: the function selector to program */ struct pinctrl_setting_mux { unsigned group; unsigned func; }; /** * struct pinctrl_setting_configs - setting data for MAP_TYPE_CONFIGS_* * @group_or_pin: the group selector or pin ID to program * @configs: a pointer to an array of config parameters/values to program into * hardware. Each individual pin controller defines the format and meaning * of config parameters. * @num_configs: the number of entries in array @configs */ struct pinctrl_setting_configs { unsigned group_or_pin; unsigned long *configs; unsigned num_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. 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; } data; }; /** * struct pin_desc - pin descriptor for each physical pin in the arch * @pctldev: corresponding pin control device * @name: a name for the pin, e.g. the name of the pin/pad/finger on a * datasheet or such * @dynamic_name: if the name of this pin was dynamically allocated * @drv_data: driver-defined per-pin data. pinctrl core does not touch this * @mux_usecount: If zero, the pin is not claimed, and @owner should be NULL. * If non-zero, this pin is claimed by @owner. This field is an integer * rather than a boolean, since pinctrl_get() might process multiple * mapping table entries that refer to, and hence claim, the same group * 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_gpio_request() was called for this pin, this is * the name of the GPIO that "owns" this pin. */ struct pin_desc { struct pinctrl_dev *pctldev; const char *name; bool dynamic_name; void *drv_data; /* These fields only added when supporting pinmux drivers */ #ifdef CONFIG_PINMUX unsigned mux_usecount; const char *mux_owner; const struct pinctrl_setting_mux *mux_setting; const char *gpio_owner; #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; const struct pinctrl_map *maps; unsigned num_maps; }; #ifdef CONFIG_GENERIC_PINCTRL_GROUPS /** * 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 * @data: pin controller driver specific data */ struct group_desc { const char *name; int *pins; int num_pins; void *data; }; int pinctrl_generic_get_group_count(struct pinctrl_dev *pctldev); const char *pinctrl_generic_get_group_name(struct pinctrl_dev *pctldev, unsigned int group_selector); int pinctrl_generic_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group_selector, const unsigned int **pins, unsigned int *npins); 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); int pinctrl_generic_remove_group(struct pinctrl_dev *pctldev, unsigned int group_selector); #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); int pinctrl_get_group_selector(struct pinctrl_dev *pctldev, const char *pin_group); static inline struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, unsigned int pin) { return radix_tree_lookup(&pctldev->pin_desc_tree, pin); } extern struct pinctrl_gpio_range * pinctrl_find_gpio_range_from_pin_nolock(struct pinctrl_dev *pctldev, unsigned int pin); int pinctrl_register_map(const struct pinctrl_map *maps, unsigned num_maps, bool dup); void pinctrl_unregister_map(const struct pinctrl_map *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_])