46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
|
|
* Simple Reset Controller ops
|
|
*
|
|
* Based on Allwinner SoCs Reset Controller driver
|
|
*
|
|
* Copyright 2013 Maxime Ripard
|
|
*
|
|
* Maxime Ripard <maxime.ripard@free-electrons.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#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__ */
|