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68 lines
1.4 KiB
68 lines
1.4 KiB
/*
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* OMAP2/3 interface clock control
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*
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* Copyright (C) 2011 Nokia Corporation
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* Paul Walmsley
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#undef DEBUG
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#include <linux/kernel.h>
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#include <linux/clk-provider.h>
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#include <linux/io.h>
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#include "clock.h"
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/* Register offsets */
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#define CM_AUTOIDLE 0x30
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#define CM_ICLKEN 0x10
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/* Private functions */
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/* XXX */
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void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk)
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{
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u32 v;
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void __iomem *r;
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r = (__force void __iomem *)
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((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN));
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v = omap2_clk_readl(clk, r);
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v |= (1 << clk->enable_bit);
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omap2_clk_writel(v, clk, r);
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}
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/* XXX */
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void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk)
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{
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u32 v;
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void __iomem *r;
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r = (__force void __iomem *)
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((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN));
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v = omap2_clk_readl(clk, r);
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v &= ~(1 << clk->enable_bit);
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omap2_clk_writel(v, clk, r);
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}
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/* Public data */
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const struct clk_hw_omap_ops clkhwops_iclk = {
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.allow_idle = omap2_clkt_iclk_allow_idle,
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.deny_idle = omap2_clkt_iclk_deny_idle,
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};
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const struct clk_hw_omap_ops clkhwops_iclk_wait = {
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.allow_idle = omap2_clkt_iclk_allow_idle,
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.deny_idle = omap2_clkt_iclk_deny_idle,
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.find_idlest = omap2_clk_dflt_find_idlest,
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.find_companion = omap2_clk_dflt_find_companion,
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};
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