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linux
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
17#include <linux/pinctrl/machine.h>
18
19struct pinctrl_dev;
20struct seq_file;
21
22/**
23 * struct pinconf_ops - pin config operations, to be implemented by
24 * pin configuration capable drivers.
25 * @is_generic: for pin controllers that want to use the generic interface,
26 * this flag tells the framework that it's generic.
27 * @pin_config_get: get the config of a certain pin, if the requested config
28 * is not available on this controller this should return -ENOTSUPP
29 * and if it is available but disabled it should return -EINVAL
30 * @pin_config_set: configure an individual pin
31 * @pin_config_group_get: get configurations for an entire pin group; should
32 * return -ENOTSUPP and -EINVAL using the same rules as pin_config_get.
33 * @pin_config_group_set: configure all pins in a group
34 * @pin_config_dbg_parse_modify: optional debugfs to modify a pin configuration
35 * @pin_config_dbg_show: optional debugfs display hook that will provide
36 * per-device info for a certain pin in debugfs
37 * @pin_config_group_dbg_show: optional debugfs display hook that will provide
38 * per-device info for a certain group in debugfs
39 * @pin_config_config_dbg_show: optional debugfs display hook that will decode
40 * and display a driver's pin configuration parameter
41 */
42struct pinconf_ops {
43#ifdef CONFIG_GENERIC_PINCONF
44 bool is_generic;
45#endif
46 int (*pin_config_get) (struct pinctrl_dev *pctldev,
47 unsigned pin,
48 unsigned long *config);
49 int (*pin_config_set) (struct pinctrl_dev *pctldev,
50 unsigned pin,
51 unsigned long *configs,
52 unsigned num_configs);
53 int (*pin_config_group_get) (struct pinctrl_dev *pctldev,
54 unsigned selector,
55 unsigned long *config);
56 int (*pin_config_group_set) (struct pinctrl_dev *pctldev,
57 unsigned selector,
58 unsigned long *configs,
59 unsigned num_configs);
60 int (*pin_config_dbg_parse_modify) (struct pinctrl_dev *pctldev,
61 const char *arg,
62 unsigned long *config);
63 void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev,
64 struct seq_file *s,
65 unsigned offset);
66 void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev,
67 struct seq_file *s,
68 unsigned selector);
69 void (*pin_config_config_dbg_show) (struct pinctrl_dev *pctldev,
70 struct seq_file *s,
71 unsigned long config);
72};
73
74#endif
75
76#endif /* __LINUX_PINCTRL_PINCONF_H */