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drm/radeon: add quirk for RV100 board 

vbios says external TMDS while the board is actually
internal TMDS.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=60037

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2013-01-29 16:36:47 -05:00
parent 674a16f2b4
commit 9200ee4941
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/radeon/radeon_combios.c
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@ -2470,6 +2470,14 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
1),
ATOM_DEVICE_CRT1_SUPPORT);
}
/* RV100 board with external TDMS bit mis-set.
* Actually uses internal TMDS, clear the bit.
*/
if (dev->pdev->device == 0x5159 &&
dev->pdev->subsystem_vendor == 0x1014 &&
dev->pdev->subsystem_device == 0x029A) {
tmp &= ~(1 << 4);
}
if ((tmp >> 4) & 0x1) {
devices |= ATOM_DEVICE_DFP2_SUPPORT;
radeon_add_legacy_encoder(dev,