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rk3288: modify to ensure pairwise call of clk_enable\disable

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in rk3288_pll_early_suspend_notifier_call

Signed-off-by: dkl <dkl@rock-chips.com>
This commit is contained in:
dkl
2015-02-03 14:15:27 +08:00
parent 2fce7ea411
commit ea38e66b9d
1 changed files with 11 additions and 4 deletions
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15
arch/arm/mach-rockchip/rk3288.c
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@@ -504,12 +504,16 @@ static int rk3288_pll_early_suspend_notifier_call(struct notifier_block *self,
{
struct fb_event *event = data;
int blank_mode = *((int *)event->data);
static bool enable = false;
if (action == FB_EARLY_EVENT_BLANK) {
switch (blank_mode) {
case FB_BLANK_UNBLANK:
clk_prepare_enable(clk_get_sys(NULL, "clk_cpll"));
clk_prepare_enable(clk_get_sys(NULL, "clk_npll"));
if (!enable) {
clk_prepare_enable(clk_get_sys(NULL, "clk_cpll"));
clk_prepare_enable(clk_get_sys(NULL, "clk_npll"));
enable = true;
}
break;
default:
break;
@@ -517,8 +521,11 @@ static int rk3288_pll_early_suspend_notifier_call(struct notifier_block *self,
} else if (action == FB_EVENT_BLANK) {
switch (blank_mode) {
case FB_BLANK_POWERDOWN:
clk_disable_unprepare(clk_get_sys(NULL, "clk_cpll"));
clk_disable_unprepare(clk_get_sys(NULL, "clk_npll"));
if (enable) {
clk_disable_unprepare(clk_get_sys(NULL, "clk_cpll"));
clk_disable_unprepare(clk_get_sys(NULL, "clk_npll"));
enable = false;
}
break;
default:
break;