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common: edid: check for digital display earlier

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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);