drm/radeon: add properties to configure the width of the underscan borders
This allows for a more exact fitting on the physical
display. The new properties default to zero which corresponds to the
previous underscan border width[height] formula:
(display_width[display_width] >> 5) + 16.
Example to set a horizontal border width of 30 and a vertikal border
height of 22:
xrandr --output HDMI-0 --set underscan on --set "underscan hborder" 30 --set "underscan vborder" 22
Signed-off-by: Marius Gröger <marius.groeger@googlemail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 17a6602..8e071bf 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -241,6 +241,8 @@
struct drm_property *tmds_pll_property;
/* underscan */
struct drm_property *underscan_property;
+ struct drm_property *underscan_hborder_property;
+ struct drm_property *underscan_vborder_property;
/* hardcoded DFP edid from BIOS */
struct edid *bios_hardcoded_edid;
@@ -370,6 +372,8 @@
uint32_t pixel_clock;
enum radeon_rmx_type rmx_type;
enum radeon_underscan_type underscan_type;
+ uint32_t underscan_hborder;
+ uint32_t underscan_vborder;
struct drm_display_mode native_mode;
void *enc_priv;
int audio_polling_active;