1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* linux/arch/arm/mach-nomadik/clock.c
*
* Copyright (C) 2009 Alessandro Rubini
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/clk.h>
#include <asm/clkdev.h>
#include "clock.h"
/*
* The nomadik board uses generic clocks, but the serial pl011 file
* calls clk_enable(), clk_disable(), clk_get_rate(), so we provide them
*/
unsigned long clk_get_rate(struct clk *clk)
{
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);
/* enable and disable do nothing */
int clk_enable(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);
/* We have a fixed clock alone, for now */
static struct clk clk_48 = {
.rate = 48 * 1000 * 1000,
};
/*
* Catch-all default clock to satisfy drivers using the clk API. We don't
* model the actual hardware clocks yet.
*/
static struct clk clk_default;
#define CLK(_clk, dev) \
{ \
.clk = _clk, \
.dev_id = dev, \
}
static struct clk_lookup lookups[] = {
CLK(&clk_48, "uart0"),
CLK(&clk_48, "uart1"),
CLK(&clk_default, "gpio.0"),
CLK(&clk_default, "gpio.1"),
CLK(&clk_default, "gpio.2"),
CLK(&clk_default, "gpio.3"),
};
static int __init clk_init(void)
{
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
return 0;
}
arch_initcall(clk_init);
|
