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drm/radeon: Extended DDC Probing for ECS A740GM-M DVI-D Connector

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commit a81b31e9fc upstream.

   ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus
   for a DVI connector that is not implemented/existent on the 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 Asus ECS A740GM-M board

   BugLink: http://bugs.launchpad.net/bugs/810926

Signed-off-by: Thomas Reim <reimth@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Acked-by: Stephen Michaels <Stephen.Micheals@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Thomas Reim
2011-07-29 14:29:00 +00:00
committed by Greg Kroah-Hartman
parent 3567503899
commit 3e7ecfafba
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/radeon/radeon_connectors.c
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@@ -455,6 +455,15 @@ static bool radeon_connector_needs_extended_probe(struct radeon_device *dev,
(supported_device == ATOM_DEVICE_DFP2_SUPPORT))
return true;
}
/* ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus
* for a DVI connector that is not implemented */
if ((dev->pdev->device == 0x796e) &&
(dev->pdev->subsystem_vendor == 0x1019) &&
(dev->pdev->subsystem_device == 0x2615)) {
if ((connector_type == DRM_MODE_CONNECTOR_DVID) &&
(supported_device == ATOM_DEVICE_DFP2_SUPPORT))
return true;
}
/* Default: no EDID header probe required for DDC probing */
return false;