diff options
Diffstat (limited to 'arch/arm/mach-aaec2000/clock.c')
-rw-r--r-- | arch/arm/mach-aaec2000/clock.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/arm/mach-aaec2000/clock.c b/arch/arm/mach-aaec2000/clock.c new file mode 100644 index 000000000000..99e019169dda --- /dev/null +++ b/arch/arm/mach-aaec2000/clock.c | |||
@@ -0,0 +1,110 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-aaec2000/clock.c | ||
3 | * | ||
4 | * Copyright (C) 2005 Nicolas Bellido Y Ortega | ||
5 | * | ||
6 | * Based on linux/arch/arm/mach-integrator/clock.c | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License version 2 as | ||
10 | * published by the Free Software Foundation. | ||
11 | */ | ||
12 | #include <linux/module.h> | ||
13 | #include <linux/kernel.h> | ||
14 | #include <linux/list.h> | ||
15 | #include <linux/errno.h> | ||
16 | #include <linux/err.h> | ||
17 | |||
18 | #include <asm/semaphore.h> | ||
19 | #include <asm/hardware/clock.h> | ||
20 | |||
21 | #include "clock.h" | ||
22 | |||
23 | static LIST_HEAD(clocks); | ||
24 | static DECLARE_MUTEX(clocks_sem); | ||
25 | |||
26 | struct clk *clk_get(struct device *dev, const char *id) | ||
27 | { | ||
28 | struct clk *p, *clk = ERR_PTR(-ENOENT); | ||
29 | |||
30 | down(&clocks_sem); | ||
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 | up(&clocks_sem); | ||
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) | ||
50 | { | ||
51 | return 0; | ||
52 | } | ||
53 | EXPORT_SYMBOL(clk_enable); | ||
54 | |||
55 | void clk_disable(struct clk *clk) | ||
56 | { | ||
57 | } | ||
58 | EXPORT_SYMBOL(clk_disable); | ||
59 | |||
60 | int clk_use(struct clk *clk) | ||
61 | { | ||
62 | return 0; | ||
63 | } | ||
64 | EXPORT_SYMBOL(clk_use); | ||
65 | |||
66 | void clk_unuse(struct clk *clk) | ||
67 | { | ||
68 | } | ||
69 | EXPORT_SYMBOL(clk_unuse); | ||
70 | |||
71 | unsigned long clk_get_rate(struct clk *clk) | ||
72 | { | ||
73 | return clk->rate; | ||
74 | } | ||
75 | EXPORT_SYMBOL(clk_get_rate); | ||
76 | |||
77 | long clk_round_rate(struct clk *clk, unsigned long rate) | ||
78 | { | ||
79 | return rate; | ||
80 | } | ||
81 | EXPORT_SYMBOL(clk_round_rate); | ||
82 | |||
83 | int clk_set_rate(struct clk *clk, unsigned long rate) | ||
84 | { | ||
85 | return 0; | ||
86 | } | ||
87 | EXPORT_SYMBOL(clk_set_rate); | ||
88 | |||
89 | int clk_register(struct clk *clk) | ||
90 | { | ||
91 | down(&clocks_sem); | ||
92 | list_add(&clk->node, &clocks); | ||
93 | up(&clocks_sem); | ||
94 | return 0; | ||
95 | } | ||
96 | EXPORT_SYMBOL(clk_register); | ||
97 | |||
98 | void clk_unregister(struct clk *clk) | ||
99 | { | ||
100 | down(&clocks_sem); | ||
101 | list_del(&clk->node); | ||
102 | up(&clocks_sem); | ||
103 | } | ||
104 | EXPORT_SYMBOL(clk_unregister); | ||
105 | |||
106 | static int __init clk_init(void) | ||
107 | { | ||
108 | return 0; | ||
109 | } | ||
110 | arch_initcall(clk_init); | ||