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drm/edid: add drm_edid helper for drm_detect_hdmi_monitor()

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We'll need to propagate drm_edid everywhere.

v2: Handle NULL EDID pointer (Ville, CI)

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2fbee0d7b544b44ef0866bb154beefac5d260bec.1652097712.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula
2022-05-09 15:03:18 +03:00
parent 027034511c
commit 3176d09250
1 changed files with 24 additions and 17 deletions
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41
drivers/gpu/drm/drm_edid.c
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@@ -5113,6 +5113,28 @@ int drm_av_sync_delay(struct drm_connector *connector,
}
EXPORT_SYMBOL(drm_av_sync_delay);
static bool _drm_detect_hdmi_monitor(const struct drm_edid *drm_edid)
{
const struct cea_db *db;
struct cea_db_iter iter;
bool hdmi = false;
/*
* Because HDMI identifier is in Vendor Specific Block,
* search it from all data blocks of CEA extension.
*/
cea_db_iter_edid_begin(drm_edid ? drm_edid->edid : NULL, &iter);
cea_db_iter_for_each(db, &iter) {
if (cea_db_is_hdmi_vsdb(db)) {
hdmi = true;
break;
}
}
cea_db_iter_end(&iter);
return hdmi;
}
/**
* drm_detect_hdmi_monitor - detect whether monitor is HDMI
* @edid: monitor EDID information
@@ -5126,24 +5148,9 @@ EXPORT_SYMBOL(drm_av_sync_delay);
*/
bool drm_detect_hdmi_monitor(const struct edid *edid)
{
const struct cea_db *db;
struct cea_db_iter iter;
bool hdmi = false;
struct drm_edid drm_edid;
/*
* Because HDMI identifier is in Vendor Specific Block,
* search it from all data blocks of CEA extension.
*/
cea_db_iter_edid_begin(edid, &iter);
cea_db_iter_for_each(db, &iter) {
if (cea_db_is_hdmi_vsdb(db)) {
hdmi = true;
break;
}
}
cea_db_iter_end(&iter);
return hdmi;
return _drm_detect_hdmi_monitor(drm_edid_legacy_init(&drm_edid, edid));
}
EXPORT_SYMBOL(drm_detect_hdmi_monitor);