drm/i2c: tda998x: set VIF for full range, underscanned display

Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 60e84043aa34..400b0c4a10fb 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -17,6 +17,7 @@
 
 
 
+#include <linux/hdmi.h>
 #include <linux/module.h>
 
 #include <drm/drmP.h>
@@ -549,6 +550,8 @@ tda998x_write_avi(struct drm_encoder *encoder, struct drm_display_mode *mode)
         buf[HB(0)] = 0x82;
         buf[HB(1)] = 0x02;
         buf[HB(2)] = 13;
+        buf[PB(1)] = HDMI_SCAN_MODE_UNDERSCAN;
+        buf[PB(3)] = HDMI_QUANTIZATION_RANGE_FULL << 2;
         buf[PB(4)] = drm_match_cea_mode(mode);
 
         tda998x_write_if(encoder, DIP_IF_FLAGS_IF2, REG_IF2_HB0, buf,