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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 | ||
e3482829 | 21 | |
84c36ffd | 22 | struct sh_clk_ops { |
549015c3 | 23 | #ifdef CONFIG_SH_CLK_CPG_LEGACY |
d28bdf05 | 24 | void (*init)(struct clk *clk); |
549015c3 | 25 | #endif |
d28bdf05 MD |
26 | int (*enable)(struct clk *clk); |
27 | void (*disable)(struct clk *clk); | |
28 | unsigned long (*recalc)(struct clk *clk); | |
35a96c73 | 29 | int (*set_rate)(struct clk *clk, unsigned long rate); |
d28bdf05 MD |
30 | int (*set_parent)(struct clk *clk, struct clk *parent); |
31 | long (*round_rate)(struct clk *clk, unsigned long rate); | |
32 | }; | |
33 | ||
34 | struct clk { | |
35 | struct list_head node; | |
d28bdf05 | 36 | struct clk *parent; |
b5272b50 GL |
37 | struct clk **parent_table; /* list of parents to */ |
38 | unsigned short parent_num; /* choose between */ | |
39 | unsigned char src_shift; /* source clock field in the */ | |
40 | unsigned char src_width; /* configuration register */ | |
84c36ffd | 41 | struct sh_clk_ops *ops; |
d28bdf05 MD |
42 | |
43 | struct list_head children; | |
44 | struct list_head sibling; /* node for children */ | |
45 | ||
46 | int usecount; | |
47 | ||
48 | unsigned long rate; | |
49 | unsigned long flags; | |
50 | ||
51 | void __iomem *enable_reg; | |
52 | unsigned int enable_bit; | |
eda2030a | 53 | void __iomem *mapped_reg; |
d28bdf05 MD |
54 | |
55 | unsigned long arch_flags; | |
56 | void *priv; | |
28085bc5 | 57 | struct clk_mapping *mapping; |
d28bdf05 | 58 | struct cpufreq_frequency_table *freq_table; |
f586903d | 59 | unsigned int nr_freqs; |
d28bdf05 MD |
60 | }; |
61 | ||
4d6ddb08 PM |
62 | #define CLK_ENABLE_ON_INIT BIT(0) |
63 | ||
64 | #define CLK_ENABLE_REG_32BIT BIT(1) /* default access size */ | |
65 | #define CLK_ENABLE_REG_16BIT BIT(2) | |
66 | #define CLK_ENABLE_REG_8BIT BIT(3) | |
67 | ||
68 | #define CLK_ENABLE_REG_MASK (CLK_ENABLE_REG_32BIT | \ | |
69 | CLK_ENABLE_REG_16BIT | \ | |
70 | CLK_ENABLE_REG_8BIT) | |
d28bdf05 | 71 | |
a71ba096 | 72 | /* drivers/sh/clk.c */ |
d28bdf05 MD |
73 | unsigned long followparent_recalc(struct clk *); |
74 | void recalculate_root_clocks(void); | |
75 | void propagate_rate(struct clk *); | |
76 | int clk_reparent(struct clk *child, struct clk *parent); | |
77 | int clk_register(struct clk *); | |
78 | void clk_unregister(struct clk *); | |
8b5ee113 | 79 | void clk_enable_init_clocks(void); |
d28bdf05 | 80 | |
d28bdf05 MD |
81 | struct clk_div_mult_table { |
82 | unsigned int *divisors; | |
83 | unsigned int nr_divisors; | |
84 | unsigned int *multipliers; | |
85 | unsigned int nr_multipliers; | |
86 | }; | |
87 | ||
88 | struct cpufreq_frequency_table; | |
89 | void clk_rate_table_build(struct clk *clk, | |
90 | struct cpufreq_frequency_table *freq_table, | |
91 | int nr_freqs, | |
92 | struct clk_div_mult_table *src_table, | |
93 | unsigned long *bitmap); | |
94 | ||
95 | long clk_rate_table_round(struct clk *clk, | |
96 | struct cpufreq_frequency_table *freq_table, | |
97 | unsigned long rate); | |
98 | ||
99 | int clk_rate_table_find(struct clk *clk, | |
100 | struct cpufreq_frequency_table *freq_table, | |
101 | unsigned long rate); | |
102 | ||
8e122db6 PM |
103 | long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, |
104 | unsigned int div_max, unsigned long rate); | |
105 | ||
dd2c0ca1 KM |
106 | long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min, |
107 | unsigned int mult_max, unsigned long rate); | |
108 | ||
6af26c6c GL |
109 | long clk_round_parent(struct clk *clk, unsigned long target, |
110 | unsigned long *best_freq, unsigned long *parent_freq, | |
111 | unsigned int div_min, unsigned int div_max); | |
112 | ||
4d6ddb08 | 113 | #define SH_CLK_MSTP(_parent, _enable_reg, _enable_bit, _flags) \ |
d28bdf05 MD |
114 | { \ |
115 | .parent = _parent, \ | |
116 | .enable_reg = (void __iomem *)_enable_reg, \ | |
117 | .enable_bit = _enable_bit, \ | |
118 | .flags = _flags, \ | |
119 | } | |
120 | ||
4d6ddb08 PM |
121 | #define SH_CLK_MSTP32(_p, _r, _b, _f) \ |
122 | SH_CLK_MSTP(_p, _r, _b, _f | CLK_ENABLE_REG_32BIT) | |
123 | ||
124 | #define SH_CLK_MSTP16(_p, _r, _b, _f) \ | |
125 | SH_CLK_MSTP(_p, _r, _b, _f | CLK_ENABLE_REG_16BIT) | |
126 | ||
127 | #define SH_CLK_MSTP8(_p, _r, _b, _f) \ | |
128 | SH_CLK_MSTP(_p, _r, _b, _f | CLK_ENABLE_REG_8BIT) | |
129 | ||
130 | int sh_clk_mstp_register(struct clk *clks, int nr); | |
131 | ||
132 | /* | |
133 | * MSTP registration never really cared about access size, despite the | |
134 | * original enable/disable pairs assuming a 32-bit access. Clocks are | |
135 | * responsible for defining their access sizes either directly or via the | |
136 | * clock definition wrappers. | |
137 | */ | |
138 | static inline int __deprecated sh_clk_mstp32_register(struct clk *clks, int nr) | |
139 | { | |
140 | return sh_clk_mstp_register(clks, nr); | |
141 | } | |
d28bdf05 MD |
142 | |
143 | #define SH_CLK_DIV4(_parent, _reg, _shift, _div_bitmap, _flags) \ | |
144 | { \ | |
145 | .parent = _parent, \ | |
146 | .enable_reg = (void __iomem *)_reg, \ | |
147 | .enable_bit = _shift, \ | |
148 | .arch_flags = _div_bitmap, \ | |
149 | .flags = _flags, \ | |
150 | } | |
151 | ||
152 | struct clk_div4_table { | |
153 | struct clk_div_mult_table *div_mult_table; | |
154 | void (*kick)(struct clk *clk); | |
155 | }; | |
156 | ||
157 | int sh_clk_div4_register(struct clk *clks, int nr, | |
158 | struct clk_div4_table *table); | |
159 | int sh_clk_div4_enable_register(struct clk *clks, int nr, | |
160 | struct clk_div4_table *table); | |
161 | int sh_clk_div4_reparent_register(struct clk *clks, int nr, | |
162 | struct clk_div4_table *table); | |
163 | ||
56242a1f | 164 | #define SH_CLK_DIV6_EXT(_reg, _flags, _parents, \ |
b3dd51a8 GL |
165 | _num_parents, _src_shift, _src_width) \ |
166 | { \ | |
b3dd51a8 GL |
167 | .enable_reg = (void __iomem *)_reg, \ |
168 | .flags = _flags, \ | |
169 | .parent_table = _parents, \ | |
170 | .parent_num = _num_parents, \ | |
171 | .src_shift = _src_shift, \ | |
172 | .src_width = _src_width, \ | |
d28bdf05 MD |
173 | } |
174 | ||
b3dd51a8 | 175 | #define SH_CLK_DIV6(_parent, _reg, _flags) \ |
56242a1f KM |
176 | { \ |
177 | .parent = _parent, \ | |
178 | .enable_reg = (void __iomem *)_reg, \ | |
179 | .flags = _flags, \ | |
180 | } | |
b3dd51a8 | 181 | |
d28bdf05 | 182 | int sh_clk_div6_register(struct clk *clks, int nr); |
b3dd51a8 | 183 | int sh_clk_div6_reparent_register(struct clk *clks, int nr); |
d28bdf05 | 184 | |
1522043b KM |
185 | #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk } |
186 | #define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk } | |
187 | #define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk } | |
188 | ||
d28bdf05 | 189 | #endif /* __SH_CLOCK_H */ |