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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (C) 2021 BAIKAL ELECTRONICS, JSC4 *5 * Baikal-T1 CCU Resets interface driver6 */7#ifndef __CLK_BT1_CCU_RST_H__8#define __CLK_BT1_CCU_RST_H__9 10#include <linux/of.h>11#include <linux/regmap.h>12#include <linux/reset-controller.h>13 14struct ccu_rst_info;15 16/*17 * enum ccu_rst_type - CCU Reset types18 * @CCU_RST_TRIG: Self-deasserted reset signal.19 * @CCU_RST_DIR: Directly controlled reset signal.20 */21enum ccu_rst_type {22 CCU_RST_TRIG,23 CCU_RST_DIR,24};25 26/*27 * struct ccu_rst_init_data - CCU Resets initialization data28 * @sys_regs: Baikal-T1 System Controller registers map.29 * @np: Pointer to the node with the System CCU block.30 */31struct ccu_rst_init_data {32 struct regmap *sys_regs;33 struct device_node *np;34};35 36/*37 * struct ccu_rst - CCU Reset descriptor38 * @rcdev: Reset controller descriptor.39 * @sys_regs: Baikal-T1 System Controller registers map.40 * @rsts_info: Reset flag info (base address and mask).41 */42struct ccu_rst {43 struct reset_controller_dev rcdev;44 struct regmap *sys_regs;45 const struct ccu_rst_info *rsts_info;46};47#define to_ccu_rst(_rcdev) container_of(_rcdev, struct ccu_rst, rcdev)48 49#ifdef CONFIG_CLK_BT1_CCU_RST50 51struct ccu_rst *ccu_rst_hw_register(const struct ccu_rst_init_data *init);52 53void ccu_rst_hw_unregister(struct ccu_rst *rst);54 55#else56 57static inline58struct ccu_rst *ccu_rst_hw_register(const struct ccu_rst_init_data *init)59{60 return NULL;61}62 63static inline void ccu_rst_hw_unregister(struct ccu_rst *rst) {}64 65#endif66 67#endif /* __CLK_BT1_CCU_RST_H__ */68