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1/*
2 * Interface the pinconfig portions of the pinctrl subsystem
3 *
4 * Copyright (C) 2011 ST-Ericsson SA
5 * Written on behalf of Linaro for ST-Ericsson
6 * This interface is used in the core to keep track of pins.
7 *
8 * Author: Linus Walleij <linus.walleij@linaro.org>
9 *
10 * License terms: GNU General Public License (GPL) version 2
11 */
12#ifndef __LINUX_PINCTRL_PINCONF_H
13#define __LINUX_PINCTRL_PINCONF_H
14
15#ifdef CONFIG_PINCONF
16
17struct pinctrl_dev;
18struct seq_file;
19
20/**
21 * struct pinconf_ops - pin config operations, to be implemented by
22 * pin configuration capable drivers.
23 * @is_generic: for pin controllers that want to use the generic interface,
24 * this flag tells the framework that it's generic.
25 * @pin_config_get: get the config of a certain pin, if the requested config
26 * is not available on this controller this should return -ENOTSUPP
27 * and if it is available but disabled it should return -EINVAL
28 * @pin_config_set: configure an individual pin
29 * @pin_config_group_get: get configurations for an entire pin group; should
30 * return -ENOTSUPP and -EINVAL using the same rules as pin_config_get.
31 * @pin_config_group_set: configure all pins in a group
32 * @pin_config_dbg_show: optional debugfs display hook that will provide
33 * per-device info for a certain pin in debugfs
34 * @pin_config_group_dbg_show: optional debugfs display hook that will provide
35 * per-device info for a certain group in debugfs
36 * @pin_config_config_dbg_show: optional debugfs display hook that will decode
37 * and display a driver's pin configuration parameter
38 */
39struct pinconf_ops {
40#ifdef CONFIG_GENERIC_PINCONF
41 bool is_generic;
42#endif
43 int (*pin_config_get) (struct pinctrl_dev *pctldev,
44 unsigned pin,
45 unsigned long *config);
46 int (*pin_config_set) (struct pinctrl_dev *pctldev,
47 unsigned pin,
48 unsigned long *configs,
49 unsigned num_configs);
50 int (*pin_config_group_get) (struct pinctrl_dev *pctldev,
51 unsigned selector,
52 unsigned long *config);
53 int (*pin_config_group_set) (struct pinctrl_dev *pctldev,
54 unsigned selector,
55 unsigned long *configs,
56 unsigned num_configs);
57 void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev,
58 struct seq_file *s,
59 unsigned offset);
60 void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev,
61 struct seq_file *s,
62 unsigned selector);
63 void (*pin_config_config_dbg_show) (struct pinctrl_dev *pctldev,
64 struct seq_file *s,
65 unsigned long config);
66};
67
68#endif
69
70#endif /* __LINUX_PINCTRL_PINCONF_H */