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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - arch/arm/mach-aaec2000/clock.c
2 * linux/arch/arm/mach-aaec2000/clock.c
4 * Copyright (C) 2005 Nicolas Bellido Y Ortega
6 * Based on linux/arch/arm/mach-integrator/clock.c
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.
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 #include <linux/string.h>
19 #include <asm/semaphore.h>
20 #include <asm/hardware/clock.h>
24 static LIST_HEAD(clocks
);
25 static DECLARE_MUTEX(clocks_sem
);
27 struct clk
*clk_get(struct device
*dev
, const char *id
)
29 struct clk
*p
, *clk
= ERR_PTR(-ENOENT
);
32 list_for_each_entry(p
, &clocks
, node
) {
33 if (strcmp(id
, p
->name
) == 0 && try_module_get(p
->owner
)) {
42 EXPORT_SYMBOL(clk_get
);
44 void clk_put(struct clk
*clk
)
46 module_put(clk
->owner
);
48 EXPORT_SYMBOL(clk_put
);
50 int clk_enable(struct clk
*clk
)
54 EXPORT_SYMBOL(clk_enable
);
56 void clk_disable(struct clk
*clk
)
59 EXPORT_SYMBOL(clk_disable
);
61 int clk_use(struct clk
*clk
)
65 EXPORT_SYMBOL(clk_use
);
67 void clk_unuse(struct clk
*clk
)
70 EXPORT_SYMBOL(clk_unuse
);
72 unsigned long clk_get_rate(struct clk
*clk
)
76 EXPORT_SYMBOL(clk_get_rate
);
78 long clk_round_rate(struct clk
*clk
, unsigned long rate
)
82 EXPORT_SYMBOL(clk_round_rate
);
84 int clk_set_rate(struct clk
*clk
, unsigned long rate
)
88 EXPORT_SYMBOL(clk_set_rate
);
90 int clk_register(struct clk
*clk
)
93 list_add(&clk
->node
, &clocks
);
97 EXPORT_SYMBOL(clk_register
);
99 void clk_unregister(struct clk
*clk
)
102 list_del(&clk
->node
);
105 EXPORT_SYMBOL(clk_unregister
);
107 static int __init
clk_init(void)
111 arch_initcall(clk_init
);