From: Andrzej Hajda Date: Fri, 25 Sep 2015 12:48:23 +0000 (+0200) Subject: drm/exynos/hdmi: simplify clock re-parenting X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=da5e36ae963b24318e0d6b9f226abb795999106a;p=deliverable%2Flinux.git drm/exynos/hdmi: simplify clock re-parenting Driver tries to disable sclk_hdmi during re-parenting, to avoid possible glitches. It is ineffective as the clock is used also by other devices (mixer). Anyway driver works without disabling sclk_hdmi. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae --- diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 583dd5ee0cb3..475341f3f9e0 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1569,9 +1569,7 @@ static void hdmi_mode_apply(struct hdmi_context *hdata) hdmiphy_wait_for_pll(hdata); - clk_disable_unprepare(hdata->res.sclk_hdmi); clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_hdmiphy); - clk_prepare_enable(hdata->res.sclk_hdmi); /* enable HDMI and timing generator */ hdmi_start(hdata, true); @@ -1579,9 +1577,7 @@ static void hdmi_mode_apply(struct hdmi_context *hdata) static void hdmiphy_conf_reset(struct hdmi_context *hdata) { - clk_disable_unprepare(hdata->res.sclk_hdmi); clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_pixel); - clk_prepare_enable(hdata->res.sclk_hdmi); /* reset hdmiphy */ hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);