1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2014 Google, Inc.
4  */
5 
6 #ifndef __PISTACHIO_CLK_H
7 #define __PISTACHIO_CLK_H
8 
9 #include <linux/clk-provider.h>
10 
11 struct pistachio_gate {
12 	unsigned int id;
13 	unsigned long reg;
14 	unsigned int shift;
15 	const char *name;
16 	const char *parent;
17 };
18 
19 #define GATE(_id, _name, _pname, _reg, _shift)	\
20 	{					\
21 		.id	= _id,			\
22 		.reg	= _reg,			\
23 		.shift	= _shift,		\
24 		.name	= _name,		\
25 		.parent = _pname,		\
26 	}
27 
28 struct pistachio_mux {
29 	unsigned int id;
30 	unsigned long reg;
31 	unsigned int shift;
32 	unsigned int num_parents;
33 	const char *name;
34 	const char *const *parents;
35 };
36 
37 #define PNAME(x) static const char *const x[] __initconst
38 
39 #define MUX(_id, _name, _pnames, _reg, _shift)			\
40 	{							\
41 		.id		= _id,				\
42 		.reg		= _reg,				\
43 		.shift		= _shift,			\
44 		.name		= _name,			\
45 		.parents	= _pnames,			\
46 		.num_parents	= ARRAY_SIZE(_pnames)		\
47 	}
48 
49 
50 struct pistachio_div {
51 	unsigned int id;
52 	unsigned long reg;
53 	unsigned int width;
54 	unsigned int div_flags;
55 	const char *name;
56 	const char *parent;
57 };
58 
59 #define DIV(_id, _name, _pname, _reg, _width)			\
60 	{							\
61 		.id		= _id,				\
62 		.reg		= _reg,				\
63 		.width		= _width,			\
64 		.div_flags	= 0,				\
65 		.name		= _name,			\
66 		.parent		= _pname,			\
67 	}
68 
69 #define DIV_F(_id, _name, _pname, _reg, _width, _div_flags)	\
70 	{							\
71 		.id		= _id,				\
72 		.reg		= _reg,				\
73 		.width		= _width,			\
74 		.div_flags	= _div_flags,			\
75 		.name		= _name,			\
76 		.parent		= _pname,			\
77 	}
78 
79 struct pistachio_fixed_factor {
80 	unsigned int id;
81 	unsigned int div;
82 	const char *name;
83 	const char *parent;
84 };
85 
86 #define FIXED_FACTOR(_id, _name, _pname, _div)			\
87 	{							\
88 		.id		= _id,				\
89 		.div		= _div,				\
90 		.name		= _name,			\
91 		.parent		= _pname,			\
92 	}
93 
94 struct pistachio_pll_rate_table {
95 	unsigned long long fref;
96 	unsigned long long fout;
97 	unsigned long long refdiv;
98 	unsigned long long fbdiv;
99 	unsigned long long postdiv1;
100 	unsigned long long postdiv2;
101 	unsigned long long frac;
102 };
103 
104 enum pistachio_pll_type {
105 	PLL_GF40LP_LAINT,
106 	PLL_GF40LP_FRAC,
107 };
108 
109 struct pistachio_pll {
110 	unsigned int id;
111 	unsigned long reg_base;
112 	enum pistachio_pll_type type;
113 	struct pistachio_pll_rate_table *rates;
114 	unsigned int nr_rates;
115 	const char *name;
116 	const char *parent;
117 };
118 
119 #define PLL(_id, _name, _pname, _type, _reg, _rates)		\
120 	{							\
121 		.id		= _id,				\
122 		.reg_base	= _reg,				\
123 		.type		= _type,			\
124 		.rates		= _rates,			\
125 		.nr_rates	= ARRAY_SIZE(_rates),		\
126 		.name		= _name,			\
127 		.parent		= _pname,			\
128 	}
129 
130 #define PLL_FIXED(_id, _name, _pname, _type, _reg)		\
131 	{							\
132 		.id		= _id,				\
133 		.reg_base	= _reg,				\
134 		.type		= _type,			\
135 		.rates		= NULL,				\
136 		.nr_rates	= 0,				\
137 		.name		= _name,			\
138 		.parent		= _pname,			\
139 	}
140 
141 struct pistachio_clk_provider {
142 	struct device_node *node;
143 	void __iomem *base;
144 	struct clk_onecell_data clk_data;
145 };
146 
147 extern struct pistachio_clk_provider *
148 pistachio_clk_alloc_provider(struct device_node *node, unsigned int num_clks);
149 extern void pistachio_clk_register_provider(struct pistachio_clk_provider *p);
150 
151 extern void pistachio_clk_register_gate(struct pistachio_clk_provider *p,
152 					struct pistachio_gate *gate,
153 					unsigned int num);
154 extern void pistachio_clk_register_mux(struct pistachio_clk_provider *p,
155 				       struct pistachio_mux *mux,
156 				       unsigned int num);
157 extern void pistachio_clk_register_div(struct pistachio_clk_provider *p,
158 				       struct pistachio_div *div,
159 				       unsigned int num);
160 extern void
161 pistachio_clk_register_fixed_factor(struct pistachio_clk_provider *p,
162 				    struct pistachio_fixed_factor *ff,
163 				    unsigned int num);
164 extern void pistachio_clk_register_pll(struct pistachio_clk_provider *p,
165 				       struct pistachio_pll *pll,
166 				       unsigned int num);
167 
168 extern void pistachio_clk_force_enable(struct pistachio_clk_provider *p,
169 				       unsigned int *clk_ids, unsigned int num);
170 
171 #endif
172