diff options
Diffstat (limited to 'arch/arm/mach-realview/clock.c')
-rw-r--r-- | arch/arm/mach-realview/clock.c | 80 |
1 files changed, 5 insertions, 75 deletions
diff --git a/arch/arm/mach-realview/clock.c b/arch/arm/mach-realview/clock.c index 3e706c57833..a7043115de7 100644 --- a/arch/arm/mach-realview/clock.c +++ b/arch/arm/mach-realview/clock.c | |||
@@ -10,9 +10,11 @@ | |||
10 | */ | 10 | */ |
11 | #include <linux/module.h> | 11 | #include <linux/module.h> |
12 | #include <linux/kernel.h> | 12 | #include <linux/kernel.h> |
13 | #include <linux/device.h> | ||
13 | #include <linux/list.h> | 14 | #include <linux/list.h> |
14 | #include <linux/errno.h> | 15 | #include <linux/errno.h> |
15 | #include <linux/err.h> | 16 | #include <linux/err.h> |
17 | #include <linux/string.h> | ||
16 | #include <linux/clk.h> | 18 | #include <linux/clk.h> |
17 | #include <linux/mutex.h> | 19 | #include <linux/mutex.h> |
18 | 20 | ||
@@ -20,32 +22,6 @@ | |||
20 | 22 | ||
21 | #include "clock.h" | 23 | #include "clock.h" |
22 | 24 | ||
23 | static LIST_HEAD(clocks); | ||
24 | static DEFINE_MUTEX(clocks_mutex); | ||
25 | |||
26 | struct clk *clk_get(struct device *dev, const char *id) | ||
27 | { | ||
28 | struct clk *p, *clk = ERR_PTR(-ENOENT); | ||
29 | |||
30 | mutex_lock(&clocks_mutex); | ||
31 | list_for_each_entry(p, &clocks, node) { | ||
32 | if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) { | ||
33 | clk = p; | ||
34 | break; | ||
35 | } | ||
36 | } | ||
37 | mutex_unlock(&clocks_mutex); | ||
38 | |||
39 | return clk; | ||
40 | } | ||
41 | EXPORT_SYMBOL(clk_get); | ||
42 | |||
43 | void clk_put(struct clk *clk) | ||
44 | { | ||
45 | module_put(clk->owner); | ||
46 | } | ||
47 | EXPORT_SYMBOL(clk_put); | ||
48 | |||
49 | int clk_enable(struct clk *clk) | 25 | int clk_enable(struct clk *clk) |
50 | { | 26 | { |
51 | return 0; | 27 | return 0; |
@@ -65,7 +41,9 @@ EXPORT_SYMBOL(clk_get_rate); | |||
65 | 41 | ||
66 | long clk_round_rate(struct clk *clk, unsigned long rate) | 42 | long clk_round_rate(struct clk *clk, unsigned long rate) |
67 | { | 43 | { |
68 | return rate; | 44 | struct icst307_vco vco; |
45 | vco = icst307_khz_to_vco(clk->params, rate / 1000); | ||
46 | return icst307_khz(clk->params, vco) * 1000; | ||
69 | } | 47 | } |
70 | EXPORT_SYMBOL(clk_round_rate); | 48 | EXPORT_SYMBOL(clk_round_rate); |
71 | 49 | ||
@@ -78,57 +56,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate) | |||
78 | 56 | ||
79 | vco = icst307_khz_to_vco(clk->params, rate / 1000); | 57 | vco = icst307_khz_to_vco(clk->params, rate / 1000); |
80 | clk->rate = icst307_khz(clk->params, vco) * 1000; | 58 | clk->rate = icst307_khz(clk->params, vco) * 1000; |
81 | |||
82 | printk("Clock %s: setting VCO reg params: S=%d R=%d V=%d\n", | ||
83 | clk->name, vco.s, vco.r, vco.v); | ||
84 | |||
85 | clk->setvco(clk, vco); | 59 | clk->setvco(clk, vco); |
86 | ret = 0; | 60 | ret = 0; |
87 | } | 61 | } |
88 | return ret; | 62 | return ret; |
89 | } | 63 | } |
90 | EXPORT_SYMBOL(clk_set_rate); | 64 | EXPORT_SYMBOL(clk_set_rate); |
91 | |||
92 | /* | ||
93 | * These are fixed clocks. | ||
94 | */ | ||
95 | static struct clk kmi_clk = { | ||
96 | .name = "KMIREFCLK", | ||
97 | .rate = 24000000, | ||
98 | }; | ||
99 | |||
100 | static struct clk uart_clk = { | ||
101 | .name = "UARTCLK", | ||
102 | .rate = 24000000, | ||
103 | }; | ||
104 | |||
105 | static struct clk mmci_clk = { | ||
106 | .name = "MCLK", | ||
107 | .rate = 33000000, | ||
108 | }; | ||
109 | |||
110 | int clk_register(struct clk *clk) | ||
111 | { | ||
112 | mutex_lock(&clocks_mutex); | ||
113 | list_add(&clk->node, &clocks); | ||
114 | mutex_unlock(&clocks_mutex); | ||
115 | return 0; | ||
116 | } | ||
117 | EXPORT_SYMBOL(clk_register); | ||
118 | |||
119 | void clk_unregister(struct clk *clk) | ||
120 | { | ||
121 | mutex_lock(&clocks_mutex); | ||
122 | list_del(&clk->node); | ||
123 | mutex_unlock(&clocks_mutex); | ||
124 | } | ||
125 | EXPORT_SYMBOL(clk_unregister); | ||
126 | |||
127 | static int __init clk_init(void) | ||
128 | { | ||
129 | clk_register(&kmi_clk); | ||
130 | clk_register(&uart_clk); | ||
131 | clk_register(&mmci_clk); | ||
132 | return 0; | ||
133 | } | ||
134 | arch_initcall(clk_init); | ||