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 | |
49 | static 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 | |
61 | static inline int pinctrl_bind_pins(struct device *dev) |
62 | { |
63 | return 0; |
64 | } |
65 | |
66 | static inline int pinctrl_init_done(struct device *dev) |
67 | { |
68 | return 0; |
69 | } |
70 | |
71 | static inline struct pinctrl *dev_pinctrl(struct device *dev) |
72 | { |
73 | return NULL; |
74 | } |
75 | |
76 | #endif /* CONFIG_PINCTRL */ |
77 | #endif /* PINCTRL_DEVINFO_H */ |
78 | |