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ARM: mach-shmobile: clock-sh7372: remove bogus pllc2 clock toggling. 

The PLLC2 clock was utilizing the same sort of enable/disable without
regard to usecount approach that the FSIDIV clock was when being used as
a PLL pass-through. This forces the enable/disable through the clock
framework, which now prevents the clock from being ripped out or modified
underneath users that have an existing handle on it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Kuninori Morimoto 2010-11-19 07:23:52 +00:00 committed by Paul Mundt
parent b16a2892b9
commit 421b446abe
2 changed files with 7 additions and 10 deletions
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5
arch/arm/mach-shmobile/board-ap4evb.c
View File

@ -969,6 +969,11 @@ static int __init hdmi_init_pm_clock(void)
goto out;
}
ret = clk_enable(&sh7372_pllc2_clk);
if (ret < 0) {
pr_err("Cannot enable pllc2 clock\n");
goto out;
}
pr_debug("PLLC2 set frequency %lu\n", rate);
ret = clk_set_parent(hdmi_ick, &sh7372_pllc2_clk);

12
arch/arm/mach-shmobile/clock-sh7372.c
View File

@ -230,21 +230,13 @@ static int pllc2_set_rate(struct clk *clk,
if (idx < 0)
return idx;
if (rate == clk->parent->rate) {
pllc2_disable(clk);
return 0;
}
if (rate == clk->parent->rate)
return -EINVAL;
value = __raw_readl(PLLC2CR) & ~(0x3f << 24);
if (value & 0x80000000)
pllc2_disable(clk);
__raw_writel((value & ~0x80000000) | ((idx + 19) << 24), PLLC2CR);
if (value & 0x80000000)
return pllc2_enable(clk);
return 0;
}