1 /* SPDX-License-Identifier: GPL-2.0+ */
2 //
3 // OWL composite 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_COMPOSITE_H_
12 #define _OWL_COMPOSITE_H_
13 
14 #include "owl-common.h"
15 #include "owl-mux.h"
16 #include "owl-gate.h"
17 #include "owl-factor.h"
18 #include "owl-fixed-factor.h"
19 #include "owl-divider.h"
20 
21 union owl_rate {
22 	struct owl_divider_hw	div_hw;
23 	struct owl_factor_hw	factor_hw;
24 	struct clk_fixed_factor	fix_fact_hw;
25 };
26 
27 struct owl_composite {
28 	struct owl_mux_hw	mux_hw;
29 	struct owl_gate_hw	gate_hw;
30 	union owl_rate		rate;
31 
32 	const struct clk_ops	*fix_fact_ops;
33 
34 	struct owl_clk_common	common;
35 };
36 
37 #define OWL_COMP_DIV(_struct, _name, _parent,				\
38 		     _mux, _gate, _div, _flags)				\
39 	struct owl_composite _struct = {				\
40 		.mux_hw		= _mux,					\
41 		.gate_hw	= _gate,				\
42 		.rate.div_hw	= _div,					\
43 		.common = {						\
44 			.regmap		= NULL,				\
45 			.hw.init	= CLK_HW_INIT_PARENTS(_name,	\
46 						     _parent,		\
47 						      &owl_comp_div_ops,\
48 						     _flags),		\
49 		},							\
50 	}
51 
52 #define OWL_COMP_DIV_FIXED(_struct, _name, _parent,			\
53 		     _gate, _div, _flags)				\
54 	struct owl_composite _struct = {				\
55 		.gate_hw	= _gate,				\
56 		.rate.div_hw	= _div,					\
57 		.common = {						\
58 			.regmap		= NULL,				\
59 			.hw.init	= CLK_HW_INIT(_name,		\
60 						     _parent,		\
61 						      &owl_comp_div_ops,\
62 						     _flags),		\
63 		},							\
64 	}
65 
66 #define OWL_COMP_FACTOR(_struct, _name, _parent,			\
67 			_mux, _gate, _factor, _flags)			\
68 	struct owl_composite _struct = {				\
69 		.mux_hw		= _mux,					\
70 		.gate_hw	= _gate,				\
71 		.rate.factor_hw	= _factor,				\
72 		.common = {						\
73 			.regmap		= NULL,				\
74 			.hw.init	= CLK_HW_INIT_PARENTS(_name,	\
75 						     _parent,		\
76 						     &owl_comp_fact_ops,\
77 						     _flags),		\
78 		},							\
79 	}
80 
81 #define OWL_COMP_FIXED_FACTOR(_struct, _name, _parent,			\
82 			_gate, _mul, _div, _flags)			\
83 	struct owl_composite _struct = {				\
84 		.gate_hw		= _gate,			\
85 		.rate.fix_fact_hw.mult	= _mul,				\
86 		.rate.fix_fact_hw.div	= _div,				\
87 		.fix_fact_ops		= &clk_fixed_factor_ops,	\
88 		.common = {						\
89 			.regmap		= NULL,				\
90 			.hw.init	= CLK_HW_INIT(_name,		\
91 						 _parent,		\
92 						 &owl_comp_fix_fact_ops,\
93 						 _flags),		\
94 		},							\
95 	}
96 
97 #define OWL_COMP_PASS(_struct, _name, _parent,				\
98 		      _mux, _gate, _flags)				\
99 	struct owl_composite _struct = {				\
100 		.mux_hw		= _mux,					\
101 		.gate_hw	= _gate,				\
102 		.common = {						\
103 			.regmap		= NULL,				\
104 			.hw.init	= CLK_HW_INIT_PARENTS(_name,	\
105 						     _parent,		\
106 						     &owl_comp_pass_ops,\
107 						     _flags),		\
108 		},							\
109 	}
110 
hw_to_owl_comp(const struct clk_hw * hw)111 static inline struct owl_composite *hw_to_owl_comp(const struct clk_hw *hw)
112 {
113 	struct owl_clk_common *common = hw_to_owl_clk_common(hw);
114 
115 	return container_of(common, struct owl_composite, common);
116 }
117 
118 extern const struct clk_ops owl_comp_div_ops;
119 extern const struct clk_ops owl_comp_fact_ops;
120 extern const struct clk_ops owl_comp_fix_fact_ops;
121 extern const struct clk_ops owl_comp_pass_ops;
122 extern const struct clk_ops clk_fixed_factor_ops;
123 
124 #endif /* _OWL_COMPOSITE_H_ */
125