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ARM: davinci: add support for multiple power domains

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On a new SoC based on DaVinci, there are multiple power
domains similar to that in C6670 (c6x). Currently the
clock module assumes that there are only two power domains
(0 and 1).

This patch removes this restriction to allow porting on to
the new SoC.

Reviewed-by :Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Murali Karicheri
2011-11-15 01:42:09 +05:30
committed by Sekhar Nori
parent caca6a03d3
commit 12221d434e
3 changed files with 10 additions and 17 deletions
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13
arch/arm/mach-davinci/clock.c
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@@ -31,19 +31,12 @@ static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
static DEFINE_SPINLOCK(clockfw_lock);
static unsigned psc_domain(struct clk *clk)
{
return (clk->flags & PSC_DSP)
? DAVINCI_GPSC_DSPDOMAIN
: DAVINCI_GPSC_ARMDOMAIN;
}
static void __clk_enable(struct clk *clk)
{
if (clk->parent)
__clk_enable(clk->parent);
if (clk->usecount++ == 0 && (clk->flags & CLK_PSC))
davinci_psc_config(psc_domain(clk), clk->gpsc, clk->lpsc,
davinci_psc_config(clk->domain, clk->gpsc, clk->lpsc,
true, clk->flags);
}
@@ -53,7 +46,7 @@ static void __clk_disable(struct clk *clk)
return;
if (--clk->usecount == 0 && !(clk->flags & CLK_PLL) &&
(clk->flags & CLK_PSC))
davinci_psc_config(psc_domain(clk), clk->gpsc, clk->lpsc,
davinci_psc_config(clk->domain, clk->gpsc, clk->lpsc,
false, clk->flags);
if (clk->parent)
__clk_disable(clk->parent);
@@ -237,7 +230,7 @@ static int __init clk_disable_unused(void)
pr_debug("Clocks: disable unused %s\n", ck->name);
davinci_psc_config(psc_domain(ck), ck->gpsc, ck->lpsc,
davinci_psc_config(ck->domain, ck->gpsc, ck->lpsc,
false, ck->flags);
}
spin_unlock_irq(&clockfw_lock);