blob: 822b5a79f457060ce417aee38878f530ac08eee1 (
plain) (
blame)
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
|
/*
* OMAP2xxx sys_clk-specific clock code
*
* Copyright (C) 2005-2008 Texas Instruments, Inc.
* Copyright (C) 2004-2010 Nokia Corporation
*
* Contacts:
* Richard Woodruff <r-woodruff2@ti.com>
* Paul Walmsley
*
* Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
* Gordon McNutt and RidgeRun, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#undef DEBUG
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <plat/clock.h>
#include "clock.h"
#include "clock2xxx.h"
#include "prm.h"
#include "prm-regbits-24xx.h"
void __iomem *prcm_clksrc_ctrl;
u32 omap2xxx_get_sysclkdiv(void)
{
u32 div;
div = __raw_readl(prcm_clksrc_ctrl);
div &= OMAP_SYSCLKDIV_MASK;
div >>= OMAP_SYSCLKDIV_SHIFT;
return div;
}
unsigned long omap2xxx_sys_clk_recalc(struct clk *clk)
{
return clk->parent->rate / omap2xxx_get_sysclkdiv();
}
|
