/*
* Machine interface for the pinctrl subsystem.
*
* 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>
*
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef __LINUX_PINCTRL_MACHINE_H
#define __LINUX_PINCTRL_MACHINE_H
#include <linux/bug.h>
#include <linux/pinctrl/pinctrl-state.h>
enum pinctrl_map_type {
PIN_MAP_TYPE_INVALID,
PIN_MAP_TYPE_DUMMY_STATE,
PIN_MAP_TYPE_MUX_GROUP,
PIN_MAP_TYPE_CONFIGS_PIN,
PIN_MAP_TYPE_CONFIGS_GROUP,
};
/**
* struct pinctrl_map_mux - mapping table content for MAP_TYPE_MUX_GROUP
* @group: the name of the group whose mux function is to be configured. This
* field may be left NULL, and the first applicable group for the function
* will be used.
* @function: the mux function to select for the group
*/
struct pinctrl_map_mux {
const char *group;
const char *function;
};
/**
* struct pinctrl_map_configs - mapping table content for MAP_TYPE_CONFIGS_*
* @group_or_pin: the name of the pin or group whose configuration parameters
* are to be configured.
* @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_map_configs {
const char *group_or_pin;
unsigned long *configs;
unsigned num_configs;
};
/**
* struct pinctrl_map - boards/machines shall provide this map for devices
* @dev_name: the name of the device using this specific mapping, the name
* must be the same as in your struct device*. If this name is set to the
* same name as the pin controllers own dev_name(), the map entry will be
* hogged by the driver itself upon registration
* @name: the name of this specific map entry for the particular machine.
* This is the parameter passed to pinmux_lookup_state()
* @type: the type of mapping table entry
* @ctrl_dev_name: the name of the device controlling this specific mapping,
* the name must be the same as in your struct device*. This field is not
* used for PIN_MAP_TYPE_DUMMY_STATE
* @data: Data specific to the mapping type
*/
struct pinctrl_map {
const char *dev_name;
const char *name;
enum pinctrl_map_type type;
const char *ctrl_dev_name;
union {
struct pinctrl_map_mux mux;
struct pinctrl_map_configs configs;
} data;
};
/* Convenience macros to create mapping table entries */
#define PIN_MAP_DUMMY_STATE(dev, state) \
{ \
.dev_name = dev, \
.name = state, \
.type = PIN_MAP_TYPE_DUMMY_STATE, \
}
#define PIN_MAP_MUX_GROUP(dev, state, pinctrl, grp, func) \
{ \
.dev_name = dev, \
.name = state, \
.type = PIN_MAP_TYPE_MUX_GROUP, \
.ctrl_dev_name = pinctrl, \
.data.mux = { \
.group = grp, \
.function = func, \
}, \
}
#define PIN_MAP_MUX_GROUP_DEFAULT(dev, pinctrl, grp, func) \
PIN_MAP_MUX_GROUP(dev, PINCTRL_STATE_DEFAULT, pinctrl, grp, func)
#define PIN_MAP_MUX_GROUP_HOG(dev, state, grp, func) \
PIN_MAP_MUX_GROUP(dev, state, dev, grp, func)
#define PIN_MAP_MUX_GROUP_HOG_DEFAULT(dev, grp, func) \
PIN_MAP_MUX_GROUP(dev, PINCTRL_STATE_DEFAULT, dev, grp, func)
#define PIN_MAP_CONFIGS_PIN(dev, state, pinctrl, pin, cfgs) \
{ \
.dev_name = dev, \
.name = state, \
.type = PIN_MAP_TYPE_CONFIGS_PIN, \
.ctrl_dev_name = pinctrl, \
.data.configs = { \
.group_or_pin = pin, \
.configs = cfgs, \
.num_configs = ARRAY_SIZE(cfgs), \
}, \
}
#define PIN_MAP_CONFIGS_PIN_DEFAULT(dev, pinctrl, pin, cfgs) \
PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE_DEFAULT, pinctrl, pin, cfgs)
#define PIN_MAP_CONFIGS_PIN_HOG(dev, state, pin, cfgs) \
PIN_MAP_CONFIGS_PIN(dev, state, dev, pin, cfgs)
#define PIN_MAP_CONFIGS_PIN_HOG_DEFAULT(dev, pin, cfgs) \
PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE_DEFAULT, dev, pin, cfgs)
#define PIN_MAP_CONFIGS_GROUP(dev, state, pinctrl, grp, cfgs) \
{ \
.dev_name = dev, \
.name = state, \
.type = PIN_MAP_TYPE_CONFIGS_GROUP, \
.ctrl_dev_name = pinctrl, \
.data.configs = { \
.group_or_pin = grp, \
.configs = cfgs, \
.num_configs = ARRAY_SIZE(cfgs), \
}, \
}
#define PIN_MAP_CONFIGS_GROUP_DEFAULT(dev, pinctrl, grp, cfgs) \
PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STATE_DEFAULT, pinctrl, grp, cfgs)
#define PIN_MAP_CONFIGS_GROUP_HOG(dev, state, grp, cfgs) \
PIN_MAP_CONFIGS_GROUP(dev, state, dev, grp, cfgs)
#define PIN_MAP_CONFIGS_GROUP_HOG_DEFAULT(dev, grp, cfgs) \
PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STATE_DEFAULT, dev, grp, cfgs)
#ifdef CONFIG_PINCTRL
extern int pinctrl_register_mappings(struct pinctrl_map const *map,
unsigned num_maps);
extern void pinctrl_provide_dummies(void);
#else
static inline int pinctrl_register_mappings(struct pinctrl_map const *map,
unsigned num_maps)
{
return 0;
}
static inline void pinctrl_provide_dummies(void)
{
}
#endif /* !CONFIG_PINCTRL */
#endif