drm/radeon: Extended DDC Probing for Toshiba L300D Radeon Mobility X1100 HDMI-A Connector

Toshiba Satellite L300D with ATI Mobility Radeon X1100 sends data
   to i2c bus for a HDMI connector that is not implemented/existent
   on the notebook's board.

   Fix by applying extented DDC probing for this connector.

   Requires [PATCH] drm/radeon: Extended DDC Probing for Connectors
   with Improperly Wired DDC Lines

   Tested for kernel 2.6.38 on Toshiba Satellite L300D notebook

   BugLink: http://bugs.launchpad.net/bugs/826677

Signed-off-by: Thomas Reim <reimth@gmail.com>
Acked-by: Chris Routh <routhy@gmail.com>
Cc: <stable@kernel.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 7f65940f918f..4f0c1ecac72e 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -466,6 +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;