owl-divider.h

 1/* SPDX-License-Identifier: GPL-2.0+ */
 2//
 3// OWL divider clock driver
 4//
 5// Copyright (c) 2014 Actions Semi Inc.
 6// Author: David Liu <liuwei@actions-semi.com>
 7//
 8// Copyright (c) 2018 Linaro Ltd.
 9// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
10
11#ifndef _OWL_DIVIDER_H_
12#define _OWL_DIVIDER_H_
13
14#include "owl-common.h"
15
16struct owl_divider_hw {
17	u32			reg;
18	u8			shift;
19	u8			width;
20	u8			div_flags;
21	struct clk_div_table	*table;
22};
23
24struct owl_divider {
25	struct owl_divider_hw	div_hw;
26	struct owl_clk_common	common;
27};
28
29#define OWL_DIVIDER_HW(_reg, _shift, _width, _div_flags, _table)	\
30	{								\
31		.reg		= _reg,					\
32		.shift		= _shift,				\
33		.width		= _width,				\
34		.div_flags	= _div_flags,				\
35		.table		= _table,				\
36	}
37
38#define OWL_DIVIDER(_struct, _name, _parent, _reg,			\
39		    _shift, _width, _table, _div_flags, _flags)		\
40	struct owl_divider _struct = {					\
41		.div_hw	= OWL_DIVIDER_HW(_reg, _shift, _width,		\
42					 _div_flags, _table),		\
43		.common = {						\
44			.regmap		= NULL,				\
45			.hw.init	= CLK_HW_INIT(_name,		\
46						      _parent,		\
47						      &owl_divider_ops,	\
48						      _flags),		\
49		},							\
50	}
51
52static inline struct owl_divider *hw_to_owl_divider(struct clk_hw *hw)
53{
54	struct owl_clk_common *common = hw_to_owl_clk_common(hw);
55
56	return container_of(common, struct owl_divider, common);
57}
58
59unsigned long owl_divider_helper_recalc_rate(struct owl_clk_common *common,
60					 const struct owl_divider_hw *div_hw,
61					 unsigned long parent_rate);
62
63int owl_divider_helper_set_rate(const struct owl_clk_common *common,
64				const struct owl_divider_hw *div_hw,
65				unsigned long rate,
66				unsigned long parent_rate);
67
68extern const struct clk_ops owl_divider_ops;
69
70#endif /* _OWL_DIVIDER_H_ */