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authorShirish S <s.shirish@samsung.com>2014-02-14 13:04:57 +0530
committerInki Dae <daeinki@gmail.com>2014-06-02 02:07:08 +0900
commit9a8e1cb036b35d61089d374db2d4294afac9be43 (patch)
tree7df4408c79a1dceeeb2fe0e0077f3f8e53c58116 /drivers/gpu/drm/exynos/exynos_hdmi.c
parentc3b35af8546c3010fc5c43baa3be7a17b0c27ed0 (diff)
drm/exynos: restore core HDMI settings
In DVI mode the video preamble and Guard band should be disabled whereas it should be applied in HDMI mode, the re-applying of preamble and guard band was missing, which resulted in display failures when switched to HDMI mode from DVI mode. This patch ensures the setting is applied in HDMI mode. Signed-off-by: Shirish S <s.shirish@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_hdmi.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_hdmi.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 6acc1e358d5..b03e721270a 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1354,6 +1354,8 @@ static void hdmi_conf_init(struct hdmi_context *hdata)
/* choose HDMI mode */
hdmi_reg_writemask(hdata, HDMI_MODE_SEL,
HDMI_MODE_HDMI_EN, HDMI_MODE_MASK);
+ /* Apply Video preable and Guard band in HDMI mode only */
+ hdmi_reg_writeb(hdata, HDMI_CON_2, 0);
/* disable bluescreen */
hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_BLUE_SCR_EN);