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d28bdf05 MD |
1 | #ifndef __SH_CLOCK_H |
2 | #define __SH_CLOCK_H | |
3 | ||
4 | #include <linux/list.h> | |
5 | #include <linux/seq_file.h> | |
6 | #include <linux/cpufreq.h> | |
28085bc5 PM |
7 | #include <linux/types.h> |
8 | #include <linux/kref.h> | |
d28bdf05 MD |
9 | #include <linux/clk.h> |
10 | #include <linux/err.h> | |
11 | ||
12 | struct clk; | |
13 | ||
28085bc5 PM |
14 | struct clk_mapping { |
15 | phys_addr_t phys; | |
16 | void __iomem *base; | |
17 | unsigned long len; | |
18 | struct kref ref; | |
19 | }; | |
20 | ||
d28bdf05 | 21 | struct clk_ops { |
549015c3 | 22 | #ifdef CONFIG_SH_CLK_CPG_LEGACY |
d28bdf05 | 23 | void (*init)(struct clk *clk); |
549015c3 | 24 | #endif |
d28bdf05 MD |
25 | int (*enable)(struct clk *clk); |
26 | void (*disable)(struct clk *clk); | |
27 | unsigned long (*recalc)(struct clk *clk); | |
35a96c73 | 28 | int (*set_rate)(struct clk *clk, unsigned long rate); |
d28bdf05 MD |
29 | int (*set_parent)(struct clk *clk, struct clk *parent); |
30 | long (*round_rate)(struct clk *clk, unsigned long rate); | |
31 | }; | |
32 | ||
33 | struct clk { | |
34 | struct list_head node; | |
d28bdf05 | 35 | struct clk *parent; |
b5272b50 GL |
36 | struct clk **parent_table; /* list of parents to */ |
37 | unsigned short parent_num; /* choose between */ | |
38 | unsigned char src_shift; /* source clock field in the */ | |
39 | unsigned char src_width; /* configuration register */ | |
d28bdf05 MD |
40 | struct clk_ops *ops; |
41 | ||
42 | struct list_head children; | |
43 | struct list_head sibling; /* node for children */ | |
44 | ||
45 | int usecount; | |
46 | ||
47 | unsigned long rate; | |
48 | unsigned long flags; | |
49 | ||
50 | void __iomem *enable_reg; | |
51 | unsigned int enable_bit; | |
52 | ||
53 | unsigned long arch_flags; | |
54 | void *priv; | |
55 | struct dentry *dentry; | |
28085bc5 | 56 | struct clk_mapping *mapping; |
d28bdf05 | 57 | struct cpufreq_frequency_table *freq_table; |
f586903d | 58 | unsigned int nr_freqs; |
d28bdf05 MD |
59 | }; |
60 | ||
61 | #define CLK_ENABLE_ON_INIT (1 << 0) | |
62 | ||
a71ba096 | 63 | /* drivers/sh/clk.c */ |
d28bdf05 MD |
64 | unsigned long followparent_recalc(struct clk *); |
65 | void recalculate_root_clocks(void); | |
66 | void propagate_rate(struct clk *); | |
67 | int clk_reparent(struct clk *child, struct clk *parent); | |
68 | int clk_register(struct clk *); | |
69 | void clk_unregister(struct clk *); | |
8b5ee113 | 70 | void clk_enable_init_clocks(void); |
d28bdf05 | 71 | |
d28bdf05 MD |
72 | struct clk_div_mult_table { |
73 | unsigned int *divisors; | |
74 | unsigned int nr_divisors; | |
75 | unsigned int *multipliers; | |
76 | unsigned int nr_multipliers; | |
77 | }; | |
78 | ||
79 | struct cpufreq_frequency_table; | |
80 | void clk_rate_table_build(struct clk *clk, | |
81 | struct cpufreq_frequency_table *freq_table, | |
82 | int nr_freqs, | |
83 | struct clk_div_mult_table *src_table, | |
84 | unsigned long *bitmap); | |
85 | ||
86 | long clk_rate_table_round(struct clk *clk, | |
87 | struct cpufreq_frequency_table *freq_table, | |
88 | unsigned long rate); | |
89 | ||
90 | int clk_rate_table_find(struct clk *clk, | |
91 | struct cpufreq_frequency_table *freq_table, | |
92 | unsigned long rate); | |
93 | ||
8e122db6 PM |
94 | long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, |
95 | unsigned int div_max, unsigned long rate); | |
96 | ||
6af26c6c GL |
97 | long clk_round_parent(struct clk *clk, unsigned long target, |
98 | unsigned long *best_freq, unsigned long *parent_freq, | |
99 | unsigned int div_min, unsigned int div_max); | |
100 | ||
d28bdf05 MD |
101 | #define SH_CLK_MSTP32(_parent, _enable_reg, _enable_bit, _flags) \ |
102 | { \ | |
103 | .parent = _parent, \ | |
104 | .enable_reg = (void __iomem *)_enable_reg, \ | |
105 | .enable_bit = _enable_bit, \ | |
106 | .flags = _flags, \ | |
107 | } | |
108 | ||
109 | int sh_clk_mstp32_register(struct clk *clks, int nr); | |
110 | ||
111 | #define SH_CLK_DIV4(_parent, _reg, _shift, _div_bitmap, _flags) \ | |
112 | { \ | |
113 | .parent = _parent, \ | |
114 | .enable_reg = (void __iomem *)_reg, \ | |
115 | .enable_bit = _shift, \ | |
116 | .arch_flags = _div_bitmap, \ | |
117 | .flags = _flags, \ | |
118 | } | |
119 | ||
120 | struct clk_div4_table { | |
121 | struct clk_div_mult_table *div_mult_table; | |
122 | void (*kick)(struct clk *clk); | |
123 | }; | |
124 | ||
125 | int sh_clk_div4_register(struct clk *clks, int nr, | |
126 | struct clk_div4_table *table); | |
127 | int sh_clk_div4_enable_register(struct clk *clks, int nr, | |
128 | struct clk_div4_table *table); | |
129 | int sh_clk_div4_reparent_register(struct clk *clks, int nr, | |
130 | struct clk_div4_table *table); | |
131 | ||
b3dd51a8 GL |
132 | #define SH_CLK_DIV6_EXT(_parent, _reg, _flags, _parents, \ |
133 | _num_parents, _src_shift, _src_width) \ | |
134 | { \ | |
135 | .parent = _parent, \ | |
136 | .enable_reg = (void __iomem *)_reg, \ | |
137 | .flags = _flags, \ | |
138 | .parent_table = _parents, \ | |
139 | .parent_num = _num_parents, \ | |
140 | .src_shift = _src_shift, \ | |
141 | .src_width = _src_width, \ | |
d28bdf05 MD |
142 | } |
143 | ||
b3dd51a8 GL |
144 | #define SH_CLK_DIV6(_parent, _reg, _flags) \ |
145 | SH_CLK_DIV6_EXT(_parent, _reg, _flags, NULL, 0, 0, 0) | |
146 | ||
d28bdf05 | 147 | int sh_clk_div6_register(struct clk *clks, int nr); |
b3dd51a8 | 148 | int sh_clk_div6_reparent_register(struct clk *clks, int nr); |
d28bdf05 | 149 | |
1522043b KM |
150 | #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk } |
151 | #define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk } | |
152 | #define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk } | |
153 | ||
d28bdf05 | 154 | #endif /* __SH_CLOCK_H */ |