blob: 8a496022baeffe4a6f7d2e18202db1645169b339 [file] [log] [blame]
Philipp Zabel81c22ad2017-08-11 12:58:43 +02001/*
2 * Simple Reset Controller ops
3 *
4 * Based on Allwinner SoCs Reset Controller driver
5 *
6 * Copyright 2013 Maxime Ripard
7 *
8 * Maxime Ripard <maxime.ripard@free-electrons.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 */
15
16#ifndef __RESET_SIMPLE_H__
17#define __RESET_SIMPLE_H__
18
19#include <linux/io.h>
20#include <linux/reset-controller.h>
21#include <linux/spinlock.h>
22
23/**
24 * struct reset_simple_data - driver data for simple reset controllers
25 * @lock: spinlock to protect registers during read-modify-write cycles
26 * @membase: memory mapped I/O register range
27 * @rcdev: reset controller device base structure
28 * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits
29 * are set to assert the reset. Note that this says nothing about
30 * the voltage level of the actual reset line.
Philipp Zabeladf20d72017-08-11 13:02:19 +020031 * @status_active_low: if true, bits read back as cleared while the reset is
32 * asserted. Otherwise, bits read back as set while the
33 * reset is asserted.
Philipp Zabel81c22ad2017-08-11 12:58:43 +020034 */
35struct reset_simple_data {
36 spinlock_t lock;
37 void __iomem *membase;
38 struct reset_controller_dev rcdev;
39 bool active_low;
Philipp Zabeladf20d72017-08-11 13:02:19 +020040 bool status_active_low;
Philipp Zabel81c22ad2017-08-11 12:58:43 +020041};
42
43extern const struct reset_control_ops reset_simple_ops;
44
45#endif /* __RESET_SIMPLE_H__ */