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 pin,
44 unsigned long *config);
45 int (*pin_config_set) (struct pinctrl_dev *pctldev,
46 unsigned pin,
47 unsigned long *configs,
48 unsigned num_configs);
49 int (*pin_config_group_get) (struct pinctrl_dev *pctldev,
50 unsigned selector,
51 unsigned long *config);
52 int (*pin_config_group_set) (struct pinctrl_dev *pctldev,
53 unsigned selector,
54 unsigned long *configs,
55 unsigned num_configs);
56 void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev,
57 struct seq_file *s,
58 unsigned offset);
59 void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev,
60 struct seq_file *s,
61 unsigned 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 */