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 */
28void omap2_clkt_iclk_allow_idle(struct clk *clk)
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 */
40void omap2_clkt_iclk_deny_idle(struct clk *clk)
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
53const struct clkops clkops_omap2_iclk_dflt_wait = {
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
62const struct clkops clkops_omap2_iclk_dflt = {
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
69const struct clkops clkops_omap2_iclk_idle_only = {
70	.allow_idle	= omap2_clkt_iclk_allow_idle,
71	.deny_idle	= omap2_clkt_iclk_deny_idle,
72};
73
74const struct clkops clkops_omap2_mdmclk_dflt_wait = {
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