[linux-2.6-block.git] / drivers / reset / reset-simple.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Simple Reset Controller ops
 *
 * Based on Allwinner SoCs Reset Controller driver
 *
 * Copyright 2013 Maxime Ripard
 *
 * Maxime Ripard <maxime.ripard@free-electrons.com>
 */

#ifndef __RESET_SIMPLE_H__
#define __RESET_SIMPLE_H__

#include <linux/io.h>
#include <linux/reset-controller.h>
#include <linux/spinlock.h>

/**
 * struct reset_simple_data - driver data for simple reset controllers
 * @lock: spinlock to protect registers during read-modify-write cycles
 * @membase: memory mapped I/O register range
 * @rcdev: reset controller device base structure
 * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits
 *              are set to assert the reset. Note that this says nothing about
 *              the voltage level of the actual reset line.
 * @status_active_low: if true, bits read back as cleared while the reset is
 *                     asserted. Otherwise, bits read back as set while the
 *                     reset is asserted.
 */
struct reset_simple_data {
	spinlock_t			lock;
	void __iomem			*membase;
	struct reset_controller_dev	rcdev;
	bool				active_low;
	bool				status_active_low;
};

extern const struct reset_control_ops reset_simple_ops;

#endif /* __RESET_SIMPLE_H__ */
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
81c22ad0 PZ	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>
81c22ad0 PZ	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.
adf20d7c PZ	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.
81c22ad0 PZ	30	*/
	31	struct reset_simple_data {
	32	spinlock_t lock;
	33	void __iomem *membase;
	34	struct reset_controller_dev rcdev;
	35	bool active_low;
adf20d7c	36	bool status_active_low;
81c22ad0 PZ	37	};
	38
	39	extern const struct reset_control_ops reset_simple_ops;
	40
	41	#endif /* __RESET_SIMPLE_H__ */