include/linux/pinctrl/devinfo.h

   1 /*
   2  * Per-device information from the pin control system.
   3  * This is the stuff that get included into the device
   4  * core.
   5  *
   6  * Copyright (C) 2012 ST-Ericsson SA
   7  * Written on behalf of Linaro for ST-Ericsson
   8  * This interface is used in the core to keep track of pins.
   9  *
  10  * Author: Linus Walleij <linus.walleij@linaro.org>
  11  *
  12  * License terms: GNU General Public License (GPL) version 2
  13  */
  14
  15 #ifndef PINCTRL_DEVINFO_H
  16 #define PINCTRL_DEVINFO_H
  17
  18 #ifdef CONFIG_PINCTRL
  19
  20 /* The device core acts as a consumer toward pinctrl */
  21 #include <linux/pinctrl/consumer.h>
  22
  23 /**
  24  * struct dev_pin_info - pin state container for devices
  25  * @p: pinctrl handle for the containing device
  26  * @default_state: the default state for the handle, if found
  27  * @init_state: the state at probe time, if found
  28  * @sleep_state: the state at suspend time, if found
  29  * @idle_state: the state at idle (runtime suspend) time, if found
  30  */
  31 struct dev_pin_info {
  32         struct pinctrl *p;
  33         struct pinctrl_state *default_state;
  34         struct pinctrl_state *init_state;
  35 #ifdef CONFIG_PM
  36         struct pinctrl_state *sleep_state;
  37         struct pinctrl_state *idle_state;
  38 #endif
  39 };
  40
  41 extern int pinctrl_bind_pins(struct device *dev);
  42 extern int pinctrl_init_done(struct device *dev);
  43
  44 #else
  45
  46 struct device;
  47
  48 /* Stubs if we're not using pinctrl */
  49
  50 static inline int pinctrl_bind_pins(struct device *dev)
  51 {
  52         return 0;
  53 }
  54
  55 static inline int pinctrl_init_done(struct device *dev)
  56 {
  57         return 0;
  58 }
  59
  60 #endif /* CONFIG_PINCTRL */
  61 #endif /* PINCTRL_DEVINFO_H */