ccu_ddn.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2024 SpacemiT Technology Co. Ltd
 4 * Copyright (c) 2024-2025 Haylen Chu <heylenay@4d2.org>
 5 */
 6
 7#ifndef _CCU_DDN_H_
 8#define _CCU_DDN_H_
 9
10#include <linux/bitops.h>
11#include <linux/clk-provider.h>
12
13#include "ccu_common.h"
14
15struct ccu_ddn {
16	struct ccu_common common;
17	unsigned int num_mask;
18	unsigned int num_shift;
19	unsigned int den_mask;
20	unsigned int den_shift;
21	unsigned int pre_div;
22};
23
24#define CCU_DDN_INIT(_name, _parent, _flags) \
25	CLK_HW_INIT_HW(#_name, &_parent.common.hw, &spacemit_ccu_ddn_ops, _flags)
26
27#define CCU_DDN_DEFINE(_name, _parent, _reg_ctrl, _num_shift, _num_width,	\
28		       _den_shift, _den_width, _pre_div, _flags)		\
29static struct ccu_ddn _name = {							\
30	.common = {								\
31		.reg_ctrl	= _reg_ctrl,					\
32		.hw.init	= CCU_DDN_INIT(_name, _parent, _flags),		\
33	},									\
34	.num_mask	= GENMASK(_num_shift + _num_width - 1, _num_shift),	\
35	.num_shift	= _num_shift,						\
36	.den_mask	= GENMASK(_den_shift + _den_width - 1, _den_shift),	\
37	.den_shift	= _den_shift,						\
38	.pre_div	= _pre_div,						\
39}
40
41static inline struct ccu_ddn *hw_to_ccu_ddn(struct clk_hw *hw)
42{
43	struct ccu_common *common = hw_to_ccu_common(hw);
44
45	return container_of(common, struct ccu_ddn, common);
46}
47
48extern const struct clk_ops spacemit_ccu_ddn_ops;
49
50#endif