diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 171d7a02ace0..92e9551f3c38 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3248,6 +3248,21 @@ static bool cea_db_is_hdmi_vsdb(const u8 *db) return hdmi_id == HDMI_IEEE_OUI; } +static bool cea_db_is_hdmi_forum_vsdb(const u8 *db) +{ + unsigned int oui; + + if (cea_db_tag(db) != VENDOR_BLOCK) + return false; + + if (cea_db_payload_len(db) < 7) + return false; + + oui = db[3] << 16 | db[2] << 8 | db[1]; + + return oui == HDMI_FORUM_IEEE_OUI; +} + #define for_each_cea_db(cea, i, start, end) \ for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1) |