diff options
Diffstat (limited to 'arch/arm/mach-integrator/clock.c')
-rw-r--r-- | arch/arm/mach-integrator/clock.c | 80 |
1 files changed, 4 insertions, 76 deletions
diff --git a/arch/arm/mach-integrator/clock.c b/arch/arm/mach-integrator/clock.c index 8d761fdd2ec..989ecf5f5c4 100644 --- a/arch/arm/mach-integrator/clock.c +++ b/arch/arm/mach-integrator/clock.c | |||
@@ -10,42 +10,12 @@ | |||
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/list.h> | ||
14 | #include <linux/errno.h> | 13 | #include <linux/errno.h> |
15 | #include <linux/err.h> | ||
16 | #include <linux/string.h> | ||
17 | #include <linux/clk.h> | 14 | #include <linux/clk.h> |
18 | #include <linux/mutex.h> | 15 | #include <linux/mutex.h> |
19 | 16 | ||
20 | #include <asm/hardware/icst525.h> | 17 | #include <asm/clkdev.h> |
21 | 18 | #include <mach/clkdev.h> | |
22 | #include "clock.h" | ||
23 | |||
24 | static LIST_HEAD(clocks); | ||
25 | static DEFINE_MUTEX(clocks_mutex); | ||
26 | |||
27 | struct clk *clk_get(struct device *dev, const char *id) | ||
28 | { | ||
29 | struct clk *p, *clk = ERR_PTR(-ENOENT); | ||
30 | |||
31 | mutex_lock(&clocks_mutex); | ||
32 | list_for_each_entry(p, &clocks, node) { | ||
33 | if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) { | ||
34 | clk = p; | ||
35 | break; | ||
36 | } | ||
37 | } | ||
38 | mutex_unlock(&clocks_mutex); | ||
39 | |||
40 | return clk; | ||
41 | } | ||
42 | EXPORT_SYMBOL(clk_get); | ||
43 | |||
44 | void clk_put(struct clk *clk) | ||
45 | { | ||
46 | module_put(clk->owner); | ||
47 | } | ||
48 | EXPORT_SYMBOL(clk_put); | ||
49 | 19 | ||
50 | int clk_enable(struct clk *clk) | 20 | int clk_enable(struct clk *clk) |
51 | { | 21 | { |
@@ -67,7 +37,6 @@ EXPORT_SYMBOL(clk_get_rate); | |||
67 | long clk_round_rate(struct clk *clk, unsigned long rate) | 37 | long clk_round_rate(struct clk *clk, unsigned long rate) |
68 | { | 38 | { |
69 | struct icst525_vco vco; | 39 | struct icst525_vco vco; |
70 | |||
71 | vco = icst525_khz_to_vco(clk->params, rate / 1000); | 40 | vco = icst525_khz_to_vco(clk->params, rate / 1000); |
72 | return icst525_khz(clk->params, vco) * 1000; | 41 | return icst525_khz(clk->params, vco) * 1000; |
73 | } | 42 | } |
@@ -76,56 +45,15 @@ EXPORT_SYMBOL(clk_round_rate); | |||
76 | int clk_set_rate(struct clk *clk, unsigned long rate) | 45 | int clk_set_rate(struct clk *clk, unsigned long rate) |
77 | { | 46 | { |
78 | int ret = -EIO; | 47 | int ret = -EIO; |
48 | |||
79 | if (clk->setvco) { | 49 | if (clk->setvco) { |
80 | struct icst525_vco vco; | 50 | struct icst525_vco vco; |
81 | 51 | ||
82 | vco = icst525_khz_to_vco(clk->params, rate / 1000); | 52 | vco = icst525_khz_to_vco(clk->params, rate / 1000); |
83 | clk->rate = icst525_khz(clk->params, vco) * 1000; | 53 | clk->rate = icst525_khz(clk->params, vco) * 1000; |
84 | |||
85 | printk("Clock %s: setting VCO reg params: S=%d R=%d V=%d\n", | ||
86 | clk->name, vco.s, vco.r, vco.v); | ||
87 | |||
88 | clk->setvco(clk, vco); | 54 | clk->setvco(clk, vco); |
89 | ret = 0; | 55 | ret = 0; |
90 | } | 56 | } |
91 | return 0; | 57 | return ret; |
92 | } | 58 | } |
93 | EXPORT_SYMBOL(clk_set_rate); | 59 | EXPORT_SYMBOL(clk_set_rate); |
94 | |||
95 | /* | ||
96 | * These are fixed clocks. | ||
97 | */ | ||
98 | static struct clk kmi_clk = { | ||
99 | .name = "KMIREFCLK", | ||
100 | .rate = 24000000, | ||
101 | }; | ||
102 | |||
103 | static struct clk uart_clk = { | ||
104 | .name = "UARTCLK", | ||
105 | .rate = 14745600, | ||
106 | }; | ||
107 | |||
108 | int clk_register(struct clk *clk) | ||
109 | { | ||
110 | mutex_lock(&clocks_mutex); | ||
111 | list_add(&clk->node, &clocks); | ||
112 | mutex_unlock(&clocks_mutex); | ||
113 | return 0; | ||
114 | } | ||
115 | EXPORT_SYMBOL(clk_register); | ||
116 | |||
117 | void clk_unregister(struct clk *clk) | ||
118 | { | ||
119 | mutex_lock(&clocks_mutex); | ||
120 | list_del(&clk->node); | ||
121 | mutex_unlock(&clocks_mutex); | ||
122 | } | ||
123 | EXPORT_SYMBOL(clk_unregister); | ||
124 | |||
125 | static int __init clk_init(void) | ||
126 | { | ||
127 | clk_register(&kmi_clk); | ||
128 | clk_register(&uart_clk); | ||
129 | return 0; | ||
130 | } | ||
131 | arch_initcall(clk_init); | ||