drm/radeon/kms: fix DP detect and EDID fetch for DP bridges

[pandora-kernel.git] / drivers / gpu / drm / radeon / radeon_connectors.c

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 519b5e2..c4b8741 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -64,18 +64,16 @@ void radeon_connector_hotplug(struct drm_connector *connector)
        if (connector->dpms != DRM_MODE_DPMS_ON)
                return;
 
-       /* powering up/down the eDP panel generates hpd events which
-        * can interfere with modesetting.
-        */
-       if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
-               return;
+       /* just deal with DP (not eDP) here. */
+       if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+               int saved_dpms = connector->dpms;
 
-       /* pre-r600 did not always have the hpd pins mapped accurately to connectors */
-       if (rdev->family >= CHIP_R600) {
-               if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
+               if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd) &&
+                   radeon_dp_needs_link_train(radeon_connector))
                        drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
                else
                        drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+               connector->dpms = saved_dpms;
        }
 }
 
@@ -468,6 +466,16 @@ static bool radeon_connector_needs_extended_probe(struct radeon_device *dev,
                    (supported_device == ATOM_DEVICE_DFP2_SUPPORT))
                        return true;
        }
+       /* TOSHIBA Satellite L300D with ATI Mobility Radeon x1100
+        * (RS690M) sends data to i2c bus for a HDMI connector that
+        * is not implemented */
+       if ((dev->pdev->device == 0x791f) &&
+           (dev->pdev->subsystem_vendor == 0x1179) &&
+           (dev->pdev->subsystem_device == 0xff68)) {
+               if ((connector_type == DRM_MODE_CONNECTOR_HDMIA) &&
+                   (supported_device == ATOM_DEVICE_DFP2_SUPPORT))
+                       return true;
+       }
 
        /* Default: no EDID header probe required for DDC probing */
        return false;
@@ -478,11 +486,19 @@ static void radeon_fixup_lvds_native_mode(struct drm_encoder *encoder,
 {
        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
        struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
+       struct drm_display_mode *t, *mode;
+
+       /* If the EDID preferred mode doesn't match the native mode, use it */
+       list_for_each_entry_safe(mode, t, &connector->probed_modes, head) {
+               if (mode->type & DRM_MODE_TYPE_PREFERRED) {
+                       if (mode->hdisplay != native_mode->hdisplay ||
+                           mode->vdisplay != native_mode->vdisplay)
+                               memcpy(native_mode, mode, sizeof(*mode));
+               }
+       }
 
        /* Try to get native mode details from EDID if necessary */
        if (!native_mode->clock) {
-               struct drm_display_mode *t, *mode;
-
                list_for_each_entry_safe(mode, t, &connector->probed_modes, head) {
                        if (mode->hdisplay == native_mode->hdisplay &&
                            mode->vdisplay == native_mode->vdisplay) {
@@ -493,6 +509,7 @@ static void radeon_fixup_lvds_native_mode(struct drm_encoder *encoder,
                        }
                }
        }
+
        if (!native_mode->clock) {
                DRM_DEBUG_KMS("No LVDS native mode details, disabling RMX\n");
                radeon_encoder->rmx_type = RMX_OFF;
@@ -1280,12 +1297,33 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
                if (!radeon_dig_connector->edp_on)
                        atombios_set_edp_panel_power(connector,
                                                     ATOM_TRANSMITTER_ACTION_POWER_OFF);
-       } else {
-               /* need to setup ddc on the bridge */
-               if (radeon_connector_encoder_is_dp_bridge(connector)) {
+       } else if (radeon_connector_encoder_is_dp_bridge(connector)) {
+               /* DP bridges are always DP */
+               radeon_dig_connector->dp_sink_type = CONNECTOR_OBJECT_ID_DISPLAYPORT;
+               /* get the DPCD from the bridge */
+               radeon_dp_getdpcd(radeon_connector);
+
+               if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
+                       ret = connector_status_connected;
+               else {
+                       /* need to setup ddc on the bridge */
                        if (encoder)
                                radeon_atom_ext_encoder_setup_ddc(encoder);
+                       if (radeon_ddc_probe(radeon_connector,
+                                            radeon_connector->requires_extended_probe))
+                               ret = connector_status_connected;
+               }
+
+               if ((ret == connector_status_disconnected) &&
+                   radeon_connector->dac_load_detect) {
+                       struct drm_encoder *encoder = radeon_best_single_encoder(connector);
+                       struct drm_encoder_helper_funcs *encoder_funcs;
+                       if (encoder) {
+                               encoder_funcs = encoder->helper_private;
+                               ret = encoder_funcs->detect(encoder, connector);
+                       }
                }
+       } else {
                radeon_dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector);
                if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
                        ret = connector_status_connected;
@@ -1301,16 +1339,6 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
                                        ret = connector_status_connected;
                        }
                }
-
-               if ((ret == connector_status_disconnected) &&
-                   radeon_connector->dac_load_detect) {
-                       struct drm_encoder *encoder = radeon_best_single_encoder(connector);
-                       struct drm_encoder_helper_funcs *encoder_funcs;
-                       if (encoder) {
-                               encoder_funcs = encoder->helper_private;
-                               ret = encoder_funcs->detect(encoder, connector);
-                       }
-               }
        }
 
        radeon_connector_update_scratch_regs(connector, ret);