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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2024 SpacemiT Technology Co. Ltd
* Copyright (c) 2024-2025 Haylen Chu <[email protected]>
* Copyright (c) 2025 Junhui Liu <[email protected]>
* Copyright (c) 2025-2026 RISCstar Ltd.
*
* Authors: Haylen Chu <[email protected]>
*/
#ifndef _CLK_DDN_H_
#define _CLK_DDN_H_
#include <linux/clk-provider.h>
#include "clk_common.h"
struct ccu_ddn {
struct ccu_common common;
unsigned int num_mask;
unsigned int num_shift;
unsigned int den_mask;
unsigned int den_shift;
unsigned int pre_div;
};
#define CCU_DDN_MASK(_num_shift, _num_width) \
GENMASK((_num_shift) + (_num_width) - 1, _num_shift)
#define CCU_DDN_DEFINE(_id, _var, _name, _parent, _reg_ctrl, _num_mask, \
_num_shift, _den_mask, _den_shift, _pre_div, _flags) \
static struct ccu_ddn _var = { \
.common = { \
.reg_ctrl = _reg_ctrl, \
CCU_COMMON(_id, _name, _parent, spacemit_ddn_init, _flags) \
}, \
.num_mask = _num_mask, \
.num_shift = _num_shift, \
.den_mask = _den_mask, \
.den_shift = _den_shift, \
.pre_div = _pre_div, \
}
static inline struct ccu_ddn *clk_to_ccu_ddn(struct clk *clk)
{
struct ccu_common *common = clk_to_ccu_common(clk);
return container_of(common, struct ccu_ddn, common);
}
int spacemit_ddn_init(struct ccu_common *common);
#endif /* _CLK_DDN_H_ */
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