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
16struct pinctrl_dev;
17struct 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 */
38struct 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