1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Per-device information from the pin control system. 4 * This is the stuff that get included into the device 5 * core. 6 * 7 * Copyright (C) 2012 ST-Ericsson SA 8 * Written on behalf of Linaro for ST-Ericsson 9 * This interface is used in the core to keep track of pins. 10 * 11 * Author: Linus Walleij <linus.walleij@linaro.org> 12 */ 13 14 #ifndef PINCTRL_DEVINFO_H 15 #define PINCTRL_DEVINFO_H 16 17 struct device; 18 19 #ifdef CONFIG_PINCTRL 20 21 #include <linux/device.h> 22 23 /* The device core acts as a consumer toward pinctrl */ 24 #include <linux/pinctrl/consumer.h> 25 26 struct pinctrl; 27 28 /** 29 * struct dev_pin_info - pin state container for devices 30 * @p: pinctrl handle for the containing device 31 * @default_state: the default state for the handle, if found 32 * @init_state: the state at probe time, if found 33 * @sleep_state: the state at suspend time, if found 34 * @idle_state: the state at idle (runtime suspend) time, if found 35 */ 36 struct dev_pin_info { 37 struct pinctrl *p; 38 struct pinctrl_state *default_state; 39 struct pinctrl_state *init_state; 40 #ifdef CONFIG_PM 41 struct pinctrl_state *sleep_state; 42 struct pinctrl_state *idle_state; 43 #endif 44 }; 45 46 extern int pinctrl_bind_pins(struct device *dev); 47 extern int pinctrl_init_done(struct device *dev); 48 dev_pinctrl(struct device * dev)49static inline struct pinctrl *dev_pinctrl(struct device *dev) 50 { 51 if (!dev->pins) 52 return NULL; 53 54 return dev->pins->p; 55 } 56 57 #else 58 59 /* Stubs if we're not using pinctrl */ 60 pinctrl_bind_pins(struct device * dev)61static inline int pinctrl_bind_pins(struct device *dev) 62 { 63 return 0; 64 } 65 pinctrl_init_done(struct device * dev)66static inline int pinctrl_init_done(struct device *dev) 67 { 68 return 0; 69 } 70 dev_pinctrl(struct device * dev)71static inline struct pinctrl *dev_pinctrl(struct device *dev) 72 { 73 return NULL; 74 } 75 76 #endif /* CONFIG_PINCTRL */ 77 #endif /* PINCTRL_DEVINFO_H */ 78