1/*
 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.
31 * @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.
34 */
35struct reset_simple_data {
36	spinlock_t			lock;
37	void __iomem			*membase;
38	struct reset_controller_dev	rcdev;
39	bool				active_low;
40	bool				status_active_low;
41};
42
43extern const struct reset_control_ops reset_simple_ops;
44
45#endif /* __RESET_SIMPLE_H__ */