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530e544f PW |
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> | |
32cc0021 | 14 | #include <linux/clk-provider.h> |
530e544f PW |
15 | #include <linux/io.h> |
16 | ||
530e544f PW |
17 | |
18 | #include "clock.h" | |
19 | #include "clock2xxx.h" | |
20 | #include "cm2xxx_3xxx.h" | |
21 | #include "cm-regbits-24xx.h" | |
22 | ||
23 | /* Private functions */ | |
24 | ||
25 | /* XXX */ | |
b4777a21 | 26 | void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk) |
530e544f PW |
27 | { |
28 | u32 v, r; | |
29 | ||
30 | r = ((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN)); | |
31 | ||
32 | v = __raw_readl((__force void __iomem *)r); | |
33 | v |= (1 << clk->enable_bit); | |
34 | __raw_writel(v, (__force void __iomem *)r); | |
35 | } | |
36 | ||
37 | /* XXX */ | |
b4777a21 | 38 | void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk) |
530e544f PW |
39 | { |
40 | u32 v, r; | |
41 | ||
42 | r = ((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN)); | |
43 | ||
44 | v = __raw_readl((__force void __iomem *)r); | |
45 | v &= ~(1 << clk->enable_bit); | |
46 | __raw_writel(v, (__force void __iomem *)r); | |
47 | } | |
48 | ||
49 | /* Public data */ | |
50 | ||
b4777a21 RN |
51 | const struct clk_hw_omap_ops clkhwops_iclk = { |
52 | .allow_idle = omap2_clkt_iclk_allow_idle, | |
53 | .deny_idle = omap2_clkt_iclk_deny_idle, | |
54 | }; | |
55 | ||
32cc0021 MT |
56 | const struct clk_hw_omap_ops clkhwops_iclk_wait = { |
57 | .allow_idle = omap2_clkt_iclk_allow_idle, | |
58 | .deny_idle = omap2_clkt_iclk_deny_idle, | |
59 | .find_idlest = omap2_clk_dflt_find_idlest, | |
60 | .find_companion = omap2_clk_dflt_find_companion, | |
61 | }; | |
530e544f | 62 | |
530e544f | 63 | |
530e544f | 64 |