1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Interface the pinconfig portions of the pinctrl subsystem |
4 | * |
5 | * Copyright (C) 2011 ST-Ericsson SA |
6 | * Written on behalf of Linaro for ST-Ericsson |
7 | * This interface is used in the core to keep track of pins. |
8 | * |
9 | * Author: Linus Walleij <linus.walleij@linaro.org> |
10 | */ |
11 | #ifndef __LINUX_PINCTRL_PINCONF_H |
12 | #define __LINUX_PINCTRL_PINCONF_H |
13 | |
14 | #include <linux/types.h> |
15 | |
16 | struct pinctrl_dev; |
17 | struct seq_file; |
18 | |
19 | /** |
20 | * struct pinconf_ops - pin config operations, to be implemented by |
21 | * pin configuration capable drivers. |
22 | * @is_generic: for pin controllers that want to use the generic interface, |
23 | * this flag tells the framework that it's generic. |
24 | * @pin_config_get: get the config of a certain pin, if the requested config |
25 | * is not available on this controller this should return -ENOTSUPP |
26 | * and if it is available but disabled it should return -EINVAL |
27 | * @pin_config_set: configure an individual pin |
28 | * @pin_config_group_get: get configurations for an entire pin group; should |
29 | * return -ENOTSUPP and -EINVAL using the same rules as pin_config_get. |
30 | * @pin_config_group_set: configure all pins in a group |
31 | * @pin_config_dbg_show: optional debugfs display hook that will provide |
32 | * per-device info for a certain pin in debugfs |
33 | * @pin_config_group_dbg_show: optional debugfs display hook that will provide |
34 | * per-device info for a certain group in debugfs |
35 | * @pin_config_config_dbg_show: optional debugfs display hook that will decode |
36 | * and display a driver's pin configuration parameter |
37 | */ |
38 | struct pinconf_ops { |
39 | #ifdef CONFIG_GENERIC_PINCONF |
40 | bool is_generic; |
41 | #endif |
42 | int (*pin_config_get) (struct pinctrl_dev *pctldev, |
43 | unsigned int pin, |
44 | unsigned long *config); |
45 | int (*pin_config_set) (struct pinctrl_dev *pctldev, |
46 | unsigned int pin, |
47 | unsigned long *configs, |
48 | unsigned int num_configs); |
49 | int (*pin_config_group_get) (struct pinctrl_dev *pctldev, |
50 | unsigned int selector, |
51 | unsigned long *config); |
52 | int (*pin_config_group_set) (struct pinctrl_dev *pctldev, |
53 | unsigned int selector, |
54 | unsigned long *configs, |
55 | unsigned int num_configs); |
56 | void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev, |
57 | struct seq_file *s, |
58 | unsigned int offset); |
59 | void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev, |
60 | struct seq_file *s, |
61 | unsigned int selector); |
62 | void (*pin_config_config_dbg_show) (struct pinctrl_dev *pctldev, |
63 | struct seq_file *s, |
64 | unsigned long config); |
65 | }; |
66 | |
67 | #endif /* __LINUX_PINCTRL_PINCONF_H */ |
68 | |