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Bug #6589: Use alternate offsets to successfully get at the panel data for 

some broken video BIOSes.
This commit is contained in:
Eric Anholt 2006-04-16 13:13:42 -05:00
parent 786ee3df17
commit ee7be006b6
1 changed files with 15 additions and 0 deletions
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15
src/i830_bios.c
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@ -173,6 +173,21 @@ i830GetLVDSInfoFromBIOS(ScrnInfoPtr pScrn)
timing_ptr = pI830->VBIOS + bdb_off +
lvds2->panels[panel_type].fp_edid_dtd_offset;
if (fpparam->terminator != 0xffff) {
/* Apparently the offsets are wrong for some BIOSes, so we
* try the other offsets if we find a bad terminator.
*/
fpparam = (struct lvds_bdb_2_fp_params *)(pI830->VBIOS +
bdb_off + lvds2->panels[panel_type].fp_params_offset + 8);
fptiming = (struct lvds_bdb_2_fp_edid_dtd *)(pI830->VBIOS +
bdb_off + lvds2->panels[panel_type].fp_edid_dtd_offset + 8);
timing_ptr = pI830->VBIOS + bdb_off +
lvds2->panels[panel_type].fp_edid_dtd_offset + 8;
if (fpparam->terminator != 0xffff)
continue;
}
pI830->PanelXRes = fpparam->x_res;
pI830->PanelYRes = fpparam->y_res;
xf86DrvMsg(pScrn->scrnIndex, X_INFO,