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[PATCH] fbdev: Workaround for buggy EDID blocks 

Some EDID blocks set the flag "prefer first detailed timing" without providing
any detailed timing at all.  Clear this flag if the block does not provide
detailed timings.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Antonino A. Daplas 2005-11-07 01:00:46 -08:00 committed by Linus Torvalds
parent 9127fa2859
commit 475666d4f8
1 changed files with 17 additions and 1 deletions
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18
drivers/video/fbmon.c
View File

@ -827,7 +827,7 @@ int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)
void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)
{
unsigned char *block;
int i;
int i, found = 0;
if (edid == NULL)
return;
@ -869,6 +869,22 @@ void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)
get_monspecs(edid, specs);
specs->modedb = fb_create_modedb(edid, &specs->modedb_len);
/*
* Workaround for buggy EDIDs that sets that the first
* detailed timing is preferred but has not detailed
* timing specified
*/
for (i = 0; i < specs->modedb_len; i++) {
if (specs->modedb[i].flag & FB_MODE_IS_DETAILED) {
found = 1;
break;
}
}
if (!found)
specs->misc &= ~FB_MISC_1ST_DETAIL;
DPRINTK("========================================\n");
}