diff options
Diffstat (limited to 'arch/sh/include/asm/clock.h')
-rw-r--r-- | arch/sh/include/asm/clock.h | 113 |
1 files changed, 88 insertions, 25 deletions
diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h index 2f6c9627bc1f..9fe7d7f8af40 100644 --- a/arch/sh/include/asm/clock.h +++ b/arch/sh/include/asm/clock.h | |||
@@ -1,9 +1,9 @@ | |||
1 | #ifndef __ASM_SH_CLOCK_H | 1 | #ifndef __ASM_SH_CLOCK_H |
2 | #define __ASM_SH_CLOCK_H | 2 | #define __ASM_SH_CLOCK_H |
3 | 3 | ||
4 | #include <linux/kref.h> | ||
5 | #include <linux/list.h> | 4 | #include <linux/list.h> |
6 | #include <linux/seq_file.h> | 5 | #include <linux/seq_file.h> |
6 | #include <linux/cpufreq.h> | ||
7 | #include <linux/clk.h> | 7 | #include <linux/clk.h> |
8 | #include <linux/err.h> | 8 | #include <linux/err.h> |
9 | 9 | ||
@@ -11,9 +11,9 @@ struct clk; | |||
11 | 11 | ||
12 | struct clk_ops { | 12 | struct clk_ops { |
13 | void (*init)(struct clk *clk); | 13 | void (*init)(struct clk *clk); |
14 | void (*enable)(struct clk *clk); | 14 | int (*enable)(struct clk *clk); |
15 | void (*disable)(struct clk *clk); | 15 | void (*disable)(struct clk *clk); |
16 | void (*recalc)(struct clk *clk); | 16 | unsigned long (*recalc)(struct clk *clk); |
17 | int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id); | 17 | int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id); |
18 | int (*set_parent)(struct clk *clk, struct clk *parent); | 18 | int (*set_parent)(struct clk *clk, struct clk *parent); |
19 | long (*round_rate)(struct clk *clk, unsigned long rate); | 19 | long (*round_rate)(struct clk *clk, unsigned long rate); |
@@ -28,43 +28,47 @@ struct clk { | |||
28 | struct clk *parent; | 28 | struct clk *parent; |
29 | struct clk_ops *ops; | 29 | struct clk_ops *ops; |
30 | 30 | ||
31 | struct kref kref; | 31 | struct list_head children; |
32 | struct list_head sibling; /* node for children */ | ||
33 | |||
34 | int usecount; | ||
32 | 35 | ||
33 | unsigned long rate; | 36 | unsigned long rate; |
34 | unsigned long flags; | 37 | unsigned long flags; |
38 | |||
39 | void __iomem *enable_reg; | ||
40 | unsigned int enable_bit; | ||
41 | |||
35 | unsigned long arch_flags; | 42 | unsigned long arch_flags; |
43 | void *priv; | ||
44 | struct dentry *dentry; | ||
45 | struct cpufreq_frequency_table *freq_table; | ||
46 | }; | ||
47 | |||
48 | struct clk_lookup { | ||
49 | struct list_head node; | ||
50 | const char *dev_id; | ||
51 | const char *con_id; | ||
52 | struct clk *clk; | ||
36 | }; | 53 | }; |
37 | 54 | ||
38 | #define CLK_ALWAYS_ENABLED (1 << 0) | 55 | #define CLK_ENABLE_ON_INIT (1 << 0) |
39 | #define CLK_RATE_PROPAGATES (1 << 1) | ||
40 | 56 | ||
41 | /* Should be defined by processor-specific code */ | 57 | /* Should be defined by processor-specific code */ |
42 | void arch_init_clk_ops(struct clk_ops **, int type); | 58 | void __deprecated arch_init_clk_ops(struct clk_ops **, int type); |
43 | int __init arch_clk_init(void); | 59 | int __init arch_clk_init(void); |
44 | 60 | ||
45 | /* arch/sh/kernel/cpu/clock.c */ | 61 | /* arch/sh/kernel/cpu/clock.c */ |
46 | int clk_init(void); | 62 | int clk_init(void); |
47 | 63 | unsigned long followparent_recalc(struct clk *); | |
48 | void clk_recalc_rate(struct clk *); | 64 | void recalculate_root_clocks(void); |
49 | 65 | void propagate_rate(struct clk *); | |
66 | int clk_reparent(struct clk *child, struct clk *parent); | ||
50 | int clk_register(struct clk *); | 67 | int clk_register(struct clk *); |
51 | void clk_unregister(struct clk *); | 68 | void clk_unregister(struct clk *); |
52 | 69 | ||
53 | static inline int clk_always_enable(const char *id) | 70 | /* arch/sh/kernel/cpu/clock-cpg.c */ |
54 | { | 71 | int __init __deprecated cpg_clk_init(void); |
55 | struct clk *clk; | ||
56 | int ret; | ||
57 | |||
58 | clk = clk_get(NULL, id); | ||
59 | if (IS_ERR(clk)) | ||
60 | return PTR_ERR(clk); | ||
61 | |||
62 | ret = clk_enable(clk); | ||
63 | if (ret) | ||
64 | clk_put(clk); | ||
65 | |||
66 | return ret; | ||
67 | } | ||
68 | 72 | ||
69 | /* the exported API, in addition to clk_set_rate */ | 73 | /* the exported API, in addition to clk_set_rate */ |
70 | /** | 74 | /** |
@@ -96,4 +100,63 @@ enum clk_sh_algo_id { | |||
96 | 100 | ||
97 | IP_N1, | 101 | IP_N1, |
98 | }; | 102 | }; |
103 | |||
104 | struct clk_div_mult_table { | ||
105 | unsigned int *divisors; | ||
106 | unsigned int nr_divisors; | ||
107 | unsigned int *multipliers; | ||
108 | unsigned int nr_multipliers; | ||
109 | }; | ||
110 | |||
111 | struct cpufreq_frequency_table; | ||
112 | void clk_rate_table_build(struct clk *clk, | ||
113 | struct cpufreq_frequency_table *freq_table, | ||
114 | int nr_freqs, | ||
115 | struct clk_div_mult_table *src_table, | ||
116 | unsigned long *bitmap); | ||
117 | |||
118 | long clk_rate_table_round(struct clk *clk, | ||
119 | struct cpufreq_frequency_table *freq_table, | ||
120 | unsigned long rate); | ||
121 | |||
122 | int clk_rate_table_find(struct clk *clk, | ||
123 | struct cpufreq_frequency_table *freq_table, | ||
124 | unsigned long rate); | ||
125 | |||
126 | #define SH_CLK_MSTP32(_name, _id, _parent, _enable_reg, \ | ||
127 | _enable_bit, _flags) \ | ||
128 | { \ | ||
129 | .name = _name, \ | ||
130 | .id = _id, \ | ||
131 | .parent = _parent, \ | ||
132 | .enable_reg = (void __iomem *)_enable_reg, \ | ||
133 | .enable_bit = _enable_bit, \ | ||
134 | .flags = _flags, \ | ||
135 | } | ||
136 | |||
137 | int sh_clk_mstp32_register(struct clk *clks, int nr); | ||
138 | |||
139 | #define SH_CLK_DIV4(_name, _parent, _reg, _shift, _div_bitmap, _flags) \ | ||
140 | { \ | ||
141 | .name = _name, \ | ||
142 | .parent = _parent, \ | ||
143 | .enable_reg = (void __iomem *)_reg, \ | ||
144 | .enable_bit = _shift, \ | ||
145 | .arch_flags = _div_bitmap, \ | ||
146 | .flags = _flags, \ | ||
147 | } | ||
148 | |||
149 | int sh_clk_div4_register(struct clk *clks, int nr, | ||
150 | struct clk_div_mult_table *table); | ||
151 | |||
152 | #define SH_CLK_DIV6(_name, _parent, _reg, _flags) \ | ||
153 | { \ | ||
154 | .name = _name, \ | ||
155 | .parent = _parent, \ | ||
156 | .enable_reg = (void __iomem *)_reg, \ | ||
157 | .flags = _flags, \ | ||
158 | } | ||
159 | |||
160 | int sh_clk_div6_register(struct clk *clks, int nr); | ||
161 | |||
99 | #endif /* __ASM_SH_CLOCK_H */ | 162 | #endif /* __ASM_SH_CLOCK_H */ |