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common: edid: check for digital display earlier 

When searching for detailed timing in EDID, check for digital display
earlier. There is no point parsing other parameters if this flag is not
present.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Jernej Skrabec 2021-04-22 01:14:27 +01:00 committed by Anatolij Gustschin
parent 3b9021a545
commit 4fb0c3c43f
1 changed files with 5 additions and 4 deletions
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9
common/edid.c
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@ -185,6 +185,11 @@ int edid_get_timing_validate(u8 *buf, int buf_size,
return -EINVAL;
}
if (!EDID1_INFO_VIDEO_INPUT_DIGITAL(*edid)) {
debug("%s: Not a digital display\n", __func__);
return -ENOSYS;
}
if (!EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(*edid)) {
debug("%s: No preferred timing\n", __func__);
return -ENOENT;
@ -211,10 +216,6 @@ int edid_get_timing_validate(u8 *buf, int buf_size,
if (!timing_done)
return -EINVAL;
if (!EDID1_INFO_VIDEO_INPUT_DIGITAL(*edid)) {
debug("%s: Not a digital display\n", __func__);
return -ENOSYS;
}
if (edid->version != 1 || edid->revision < 4) {
debug("%s: EDID version %d.%d does not have required info\n",
__func__, edid->version, edid->revision);