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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2021 BAIKAL ELECTRONICS, JSC
*
* Baikal-T1 CCU Resets interface driver
*/
#ifndef __CLK_BT1_CCU_RST_H__
#define __CLK_BT1_CCU_RST_H__
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/reset-controller.h>
struct ccu_rst_info;
/*
* enum ccu_rst_type - CCU Reset types
* @CCU_RST_TRIG: Self-deasserted reset signal.
* @CCU_RST_DIR: Directly controlled reset signal.
*/
enum ccu_rst_type {
CCU_RST_TRIG,
CCU_RST_DIR,
};
/*
* struct ccu_rst_init_data - CCU Resets initialization data
* @sys_regs: Baikal-T1 System Controller registers map.
* @np: Pointer to the node with the System CCU block.
*/
struct ccu_rst_init_data {
struct regmap *sys_regs;
struct device_node *np;
};
/*
* struct ccu_rst - CCU Reset descriptor
* @rcdev: Reset controller descriptor.
* @sys_regs: Baikal-T1 System Controller registers map.
* @rsts_info: Reset flag info (base address and mask).
*/
struct ccu_rst {
struct reset_controller_dev rcdev;
struct regmap *sys_regs;
const struct ccu_rst_info *rsts_info;
};
#define to_ccu_rst(_rcdev) container_of(_rcdev, struct ccu_rst, rcdev)
#ifdef CONFIG_CLK_BT1_CCU_RST
struct ccu_rst *ccu_rst_hw_register(const struct ccu_rst_init_data *init);
void ccu_rst_hw_unregister(struct ccu_rst *rst);
#else
static inline
struct ccu_rst *ccu_rst_hw_register(const struct ccu_rst_init_data *init)
{
return NULL;
}
static inline void ccu_rst_hw_unregister(struct ccu_rst *rst) {}
#endif
#endif /* __CLK_BT1_CCU_RST_H__ */
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