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-rw-r--r--drivers/gpu/drm/radeon/radeon_connectors.c48
1 files changed, 47 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index fb4d9184704..fce4c4087fd 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -397,6 +397,30 @@ static int radeon_lvds_get_modes(struct drm_connector *connector)
static int radeon_lvds_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
+ struct drm_encoder *encoder = radeon_best_single_encoder(connector);
+
+ if ((mode->hdisplay < 320) || (mode->vdisplay < 240))
+ return MODE_PANEL;
+
+ if (encoder) {
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
+
+ /* AVIVO hardware supports downscaling modes larger than the panel
+ * to the panel size, but I'm not sure this is desirable.
+ */
+ if ((mode->hdisplay > native_mode->hdisplay) ||
+ (mode->vdisplay > native_mode->vdisplay))
+ return MODE_PANEL;
+
+ /* if scaling is disabled, block non-native modes */
+ if (radeon_encoder->rmx_type == RMX_OFF) {
+ if ((mode->hdisplay != native_mode->hdisplay) ||
+ (mode->vdisplay != native_mode->vdisplay))
+ return MODE_PANEL;
+ }
+ }
+
return MODE_OK;
}
@@ -512,6 +536,8 @@ static int radeon_vga_get_modes(struct drm_connector *connector)
static int radeon_vga_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
+ /* XXX check mode bandwidth */
+ /* XXX verify against max DAC output frequency */
return MODE_OK;
}
@@ -609,6 +635,8 @@ static int radeon_tv_get_modes(struct drm_connector *connector)
static int radeon_tv_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
+ if ((mode->hdisplay > 1024) || (mode->vdisplay > 768))
+ return MODE_CLOCK_RANGE;
return MODE_OK;
}
@@ -801,9 +829,27 @@ static void radeon_dvi_force(struct drm_connector *connector)
radeon_connector->use_digital = true;
}
+static int radeon_dvi_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+
+ /* XXX check mode bandwidth */
+
+ if (radeon_connector->use_digital && (mode->clock > 165000)) {
+ if ((radeon_connector->connector_object_id == CONNECTOR_OBJECT_ID_DUAL_LINK_DVI_I) ||
+ (radeon_connector->connector_object_id == CONNECTOR_OBJECT_ID_DUAL_LINK_DVI_D) ||
+ (radeon_connector->connector_object_id == CONNECTOR_OBJECT_ID_HDMI_TYPE_B))
+ return MODE_OK;
+ else
+ return MODE_CLOCK_HIGH;
+ }
+ return MODE_OK;
+}
+
struct drm_connector_helper_funcs radeon_dvi_connector_helper_funcs = {
.get_modes = radeon_dvi_get_modes,
- .mode_valid = radeon_vga_mode_valid,
+ .mode_valid = radeon_dvi_mode_valid,
.best_encoder = radeon_dvi_encoder,
};