Linux Kernel  3.7.1
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clkt_iclk.c
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1 /*
2  * OMAP2/3 interface clock control
3  *
4  * Copyright (C) 2011 Nokia Corporation
5  * Paul Walmsley
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 #undef DEBUG
12 
13 #include <linux/kernel.h>
14 #include <linux/clk.h>
15 #include <linux/io.h>
16 
17 #include <plat/clock.h>
18 #include <plat/prcm.h>
19 
20 #include "clock.h"
21 #include "clock2xxx.h"
22 #include "cm2xxx_3xxx.h"
23 #include "cm-regbits-24xx.h"
24 
25 /* Private functions */
26 
27 /* XXX */
29 {
30  u32 v, r;
31 
32  r = ((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN));
33 
34  v = __raw_readl((__force void __iomem *)r);
35  v |= (1 << clk->enable_bit);
36  __raw_writel(v, (__force void __iomem *)r);
37 }
38 
39 /* XXX */
41 {
42  u32 v, r;
43 
44  r = ((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN));
45 
46  v = __raw_readl((__force void __iomem *)r);
47  v &= ~(1 << clk->enable_bit);
48  __raw_writel(v, (__force void __iomem *)r);
49 }
50 
51 /* Public data */
52 
54  .enable = omap2_dflt_clk_enable,
55  .disable = omap2_dflt_clk_disable,
56  .find_companion = omap2_clk_dflt_find_companion,
57  .find_idlest = omap2_clk_dflt_find_idlest,
58  .allow_idle = omap2_clkt_iclk_allow_idle,
59  .deny_idle = omap2_clkt_iclk_deny_idle,
60 };
61 
63  .enable = omap2_dflt_clk_enable,
64  .disable = omap2_dflt_clk_disable,
65  .allow_idle = omap2_clkt_iclk_allow_idle,
66  .deny_idle = omap2_clkt_iclk_deny_idle,
67 };
68 
70  .allow_idle = omap2_clkt_iclk_allow_idle,
71  .deny_idle = omap2_clkt_iclk_deny_idle,
72 };
73 
75  .enable = omap2_dflt_clk_enable,
76  .disable = omap2_dflt_clk_disable,
77  .find_companion = omap2_clk_dflt_find_companion,
78  .find_idlest = omap2_clk_dflt_find_idlest,
79  .allow_idle = omap2_clkt_iclk_allow_idle,
80  .deny_idle = omap2_clkt_iclk_deny_idle,
81 };
82