+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2012 The Chromium OS Authors.
*
* (C) Copyright 2010
* Petr Stetiar <ynezz@true.cz>
*
- * SPDX-License-Identifier: GPL-2.0+
- *
* Contains stolen code from ddcprobe project which is:
* Copyright (C) Nalin Dahyabhai <bigfun@pobox.com>
*/
/* Size of the EDID data */
#define EDID_SIZE 128
+#define EDID_EXT_SIZE 256
+
+/* OUI of HDMI vendor specific data block */
+#define HDMI_IEEE_OUI 0x000c03
#define GET_BIT(_x, _pos) \
(((_x) >> (_pos)) & 1)
unsigned char checksum;
} __attribute__ ((__packed__));
+enum edid_cea861_db_types {
+ EDID_CEA861_DB_AUDIO = 0x01,
+ EDID_CEA861_DB_VIDEO = 0x02,
+ EDID_CEA861_DB_VENDOR = 0x03,
+ EDID_CEA861_DB_SPEAKER = 0x04,
+};
+
struct edid_cea861_info {
unsigned char extension_tag;
#define EDID_CEA861_EXTENSION_TAG 0x02
#define EDID_CEA861_DTD_COUNT(_x) \
GET_BITS(((_x).dtd_count), 3, 0)
unsigned char data[124];
+#define EDID_CEA861_DB_TYPE(_x, offset) \
+ GET_BITS((_x).data[offset], 7, 5)
+#define EDID_CEA861_DB_LEN(_x, offset) \
+ GET_BITS((_x).data[offset], 4, 0)
} __attribute__ ((__packed__));
/**