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