vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

move generic parts of EDID handling (structure, checksumming) to generic location

Browse source
This commit is contained in:
Colin Watson 2010-12-14 17:06:32 +00:00
parent e03f549b3e
commit 25d884a52a
5 changed files with 92 additions and 87 deletions
Download patch file Download diff file Expand all files Collapse all files

19
grub-core/video/video.c
View file

@ -374,6 +374,25 @@ grub_video_get_active_render_target (struct grub_video_render_target **target)
return grub_video_adapter_active->get_active_render_target (target);
}
grub_err_t
grub_video_edid_checksum (struct grub_video_edid_info *edid_info)
{
const char *edid_bytes = (const char *) edid_info;
int i;
char checksum = 0;
/* Check EDID checksum. */
for (i = 0; i < 128; ++i)
checksum += edid_bytes[i];
if (checksum != 0)
return grub_error (GRUB_ERR_BAD_DEVICE,
"invalid EDID checksum %d", checksum);
grub_errno = GRUB_ERR_NONE;
return grub_errno;
}
/* Parse <width>x<height>[x<depth>]*/
static grub_err_t
parse_modespec (const char *current_mode, int *width, int *height, int *depth)