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