1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Simple Reset Controller ops
 4 *
 5 * Based on Allwinner SoCs Reset Controller driver
 6 *
 7 * Copyright 2013 Maxime Ripard
 8 *
 9 * Maxime Ripard <maxime.ripard@free-electrons.com>
10 */
11
12#ifndef __RESET_SIMPLE_H__
13#define __RESET_SIMPLE_H__
14
15#include <linux/io.h>
16#include <linux/reset-controller.h>
17#include <linux/spinlock.h>
18
19/**
20 * struct reset_simple_data - driver data for simple reset controllers
21 * @lock: spinlock to protect registers during read-modify-write cycles
22 * @membase: memory mapped I/O register range
23 * @rcdev: reset controller device base structure
24 * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits
25 *              are set to assert the reset. Note that this says nothing about
26 *              the voltage level of the actual reset line.
27 * @status_active_low: if true, bits read back as cleared while the reset is
28 *                     asserted. Otherwise, bits read back as set while the
29 *                     reset is asserted.
30 */
31struct reset_simple_data {
32	spinlock_t			lock;
33	void __iomem			*membase;
34	struct reset_controller_dev	rcdev;
35	bool				active_low;
36	bool				status_active_low;
37};
38
39extern const struct reset_control_ops reset_simple_ops;
40
41#endif /* __RESET_SIMPLE_H__ */