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[media] exynos-gsc: Do full clock gating at runtime PM suspend 

To potentially save more power in runtime PM suspend state, let's
also prepare/unprepare the clock from the runtime PM callbacks.

[mszyprow: rebased onto v4.9-rc4]

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Ulf Hansson 2016-11-09 12:23:55 -02:00 committed by Mauro Carvalho Chehab
parent a006c04e62
commit 7ebcb3e842
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/exynos-gsc/gsc-core.c
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@ -1154,7 +1154,7 @@ static int gsc_runtime_resume(struct device *dev)
pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state);
ret = clk_enable(gsc->clock); ret = clk_prepare_enable(gsc->clock);
if (ret) if (ret)
return ret; return ret;
@ -1172,7 +1172,7 @@ static int gsc_runtime_suspend(struct device *dev)
ret = gsc_m2m_suspend(gsc); ret = gsc_m2m_suspend(gsc);
if (!ret) if (!ret)
clk_disable(gsc->clock); clk_disable_unprepare(gsc->clock);
pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state); pr_debug("gsc%d: state: 0x%lx", gsc->id, gsc->state);
return ret; return ret;