drm/radeon/kms: enable underscan option for digital connectors
This connector attribute allows you to enable or disable underscan
on a digital output to compensate for panels that automatically
overscan (e.g., many HDMI TVs). Valid values for the attribute are:
off - forces underscan off
on - forces underscan on
auto - enables underscan if an HDMI TV is connected, off otherwise
default value is auto.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 12a5414..74dac96 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -921,6 +921,12 @@
{ TV_STD_SECAM, "secam" },
};
+static struct drm_prop_enum_list radeon_underscan_enum_list[] =
+{ { UNDERSCAN_OFF, "off" },
+ { UNDERSCAN_ON, "on" },
+ { UNDERSCAN_AUTO, "auto" },
+};
+
static int radeon_modeset_create_props(struct radeon_device *rdev)
{
int i, sz;
@@ -974,6 +980,18 @@
radeon_tv_std_enum_list[i].name);
}
+ sz = ARRAY_SIZE(radeon_underscan_enum_list);
+ rdev->mode_info.underscan_property =
+ drm_property_create(rdev->ddev,
+ DRM_MODE_PROP_ENUM,
+ "underscan", sz);
+ for (i = 0; i < sz; i++) {
+ drm_property_add_enum(rdev->mode_info.underscan_property,
+ i,
+ radeon_underscan_enum_list[i].type,
+ radeon_underscan_enum_list[i].name);
+ }
+
return 0;
}
@@ -1069,17 +1087,26 @@
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = crtc->dev;
+ struct radeon_device *rdev = dev->dev_private;
struct drm_encoder *encoder;
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct radeon_encoder *radeon_encoder;
+ struct drm_connector *connector;
+ struct radeon_connector *radeon_connector;
bool first = true;
u32 src_v = 1, dst_v = 1;
u32 src_h = 1, dst_h = 1;
+ radeon_crtc->h_border = 0;
+ radeon_crtc->v_border = 0;
+
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
if (encoder->crtc != crtc)
continue;
radeon_encoder = to_radeon_encoder(encoder);
+ connector = radeon_get_connector_for_encoder(encoder);
+ radeon_connector = to_radeon_connector(connector);
+
if (first) {
/* set scaling */
if (radeon_encoder->rmx_type == RMX_OFF)
@@ -1097,6 +1124,20 @@
memcpy(&radeon_crtc->native_mode,
&radeon_encoder->native_mode,
sizeof(struct drm_display_mode));
+
+ /* fix up for overscan on hdmi */
+ if (ASIC_IS_AVIVO(rdev) &&
+ ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
+ ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
+ drm_detect_hdmi_monitor(radeon_connector->edid)))) {
+ radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
+ radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
+ radeon_crtc->rmx_type = RMX_FULL;
+ src_v = crtc->mode.vdisplay;
+ dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
+ src_h = crtc->mode.hdisplay;
+ dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
+ }
first = false;
} else {
if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {