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-provider.h>
15#include <linux/io.h>
16
17#include "clock.h"
18
19/* Register offsets */
20#define CM_AUTOIDLE			0x30
21#define CM_ICLKEN			0x10
22
23/* Private functions */
24
25/* XXX */
26void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk)
27{
28	u32 v;
29	void __iomem *r;
30
31	r = (__force void __iomem *)
32		((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN));
33
34	v = omap2_clk_readl(clk, r);
35	v |= (1 << clk->enable_bit);
36	omap2_clk_writel(v, clk, r);
37}
38
39/* XXX */
40void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk)
41{
42	u32 v;
43	void __iomem *r;
44
45	r = (__force void __iomem *)
46		((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN));
47
48	v = omap2_clk_readl(clk, r);
49	v &= ~(1 << clk->enable_bit);
50	omap2_clk_writel(v, clk, r);
51}
52
53/* Public data */
54
55const struct clk_hw_omap_ops clkhwops_iclk = {
56	.allow_idle	= omap2_clkt_iclk_allow_idle,
57	.deny_idle	= omap2_clkt_iclk_deny_idle,
58};
59
60const struct clk_hw_omap_ops clkhwops_iclk_wait = {
61	.allow_idle	= omap2_clkt_iclk_allow_idle,
62	.deny_idle	= omap2_clkt_iclk_deny_idle,
63	.find_idlest	= omap2_clk_dflt_find_idlest,
64	.find_companion	= omap2_clk_dflt_find_companion,
65};
66
67
68
69