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author | Paul Walmsley <paul@pwsan.com> | 2011-02-25 22:39:28 (GMT) |
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committer | Paul Walmsley <paul@pwsan.com> | 2011-03-08 03:02:30 (GMT) |
commit | 530e544fdadb934470c5c2b0e8d60c3d5386c161 (patch) | |
tree | ec06e217f38300674ee2171702034cf6dfe1d46a /arch/arm/mach-omap2/clkt_iclk.c | |
parent | cc1d230cfbc1622be4bf16568f468054be8c5d2e (diff) | |
download | linux-530e544fdadb934470c5c2b0e8d60c3d5386c161.tar.xz |
OMAP2+: clock: add interface clock type code with autoidle support
Add interface clock type code with autoidle enable/disable support.
The clkops structures created in this file will be used for all
OMAP2/3 interface clocks with autoidle support. They will enable the
clock framework to control interface clock autoidle directly.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/clkt_iclk.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt_iclk.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clkt_iclk.c b/arch/arm/mach-omap2/clkt_iclk.c new file mode 100644 index 0000000..dd8a6d3 --- /dev/null +++ b/arch/arm/mach-omap2/clkt_iclk.c @@ -0,0 +1,73 @@ +/* + * OMAP2/3 interface clock control + * + * Copyright (C) 2011 Nokia Corporation + * Paul Walmsley + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#undef DEBUG + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <plat/clock.h> +#include <plat/prcm.h> + +#include "clock.h" +#include "clock2xxx.h" +#include "cm2xxx_3xxx.h" +#include "cm-regbits-24xx.h" + +/* Private functions */ + +/* XXX */ +void omap2_clkt_iclk_allow_idle(struct clk *clk) +{ + u32 v, r; + + r = ((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN)); + + v = __raw_readl((__force void __iomem *)r); + v |= (1 << clk->enable_bit); + __raw_writel(v, (__force void __iomem *)r); +} + +/* XXX */ +void omap2_clkt_iclk_deny_idle(struct clk *clk) +{ + u32 v, r; + + r = ((__force u32)clk->enable_reg ^ (CM_AUTOIDLE ^ CM_ICLKEN)); + + v = __raw_readl((__force void __iomem *)r); + v &= ~(1 << clk->enable_bit); + __raw_writel(v, (__force void __iomem *)r); +} + +/* Public data */ + +const struct clkops clkops_omap2_iclk_dflt_wait = { + .enable = omap2_dflt_clk_enable, + .disable = omap2_dflt_clk_disable, + .find_companion = omap2_clk_dflt_find_companion, + .find_idlest = omap2_clk_dflt_find_idlest, + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, +}; + +const struct clkops clkops_omap2_iclk_dflt = { + .enable = omap2_dflt_clk_enable, + .disable = omap2_dflt_clk_disable, + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, +}; + +const struct clkops clkops_omap2_iclk_idle_only = { + .allow_idle = omap2_clkt_iclk_allow_idle, + .deny_idle = omap2_clkt_iclk_deny_idle, +}; + |