252 	const u8 *edid = port->edid;  in extron_parse_edid()  local
261 	port->est_i = edid[0x23];  in extron_parse_edid()
262 	port->est_ii = edid[0x24];  in extron_parse_edid()
266 		const u8 *dtd = edid + 0x36 + i * 18;  in extron_parse_edid()
292 	edid += 128;  in extron_parse_edid()
295 	if (edid[0] != 0x02 || edid[1] != 0x03)  in extron_parse_edid()
299 	d = edid[2] & 0x7f;  in extron_parse_edid()
308 		u8 tag = edid[i] >> 5;  in extron_parse_edid()
309 		u8 len = edid[i] & 0x1f;  in extron_parse_edid()
318 			if (memchr(edid + i + 1, 97, len))  in extron_parse_edid()
321 			if (memchr(edid + i + 1, 95, len))  in extron_parse_edid()
326 			switch (edid[i + 1]) {  in extron_parse_edid()
328 				if (edid[i + 2] & 0x80)  in extron_parse_edid()
330 				if (edid[i + 2] & 0x40)  in extron_parse_edid()
340 static int get_edid_tag_location(const u8 *edid, unsigned int size,  in get_edid_tag_location()  argument
347 	edid += offset;  in get_edid_tag_location()
350 	if (size < 256 || edid[0] != 0x02 || edid[1] != 0x03)  in get_edid_tag_location()
354 	d = edid[0x02] & 0x7f;  in get_edid_tag_location()
362 		unsigned char tag = edid[i] >> 5;  in get_edid_tag_location()
363 		unsigned char len = edid[i] & 0x1f;  in get_edid_tag_location()
370 		if (tag < 7 || (len >= 1 && edid[i + 1] == ext_tag))  in get_edid_tag_location()
377 static void extron_edid_crc(u8 *edid)  in extron_edid_crc()  argument
384 		sum += edid[offset];  in extron_edid_crc()
385 	edid[127] = 256 - sum;  in extron_edid_crc()
444 			     const u8 *edid, unsigned int blocks)  in extron_write_edid()  argument
450 	if (cec_get_edid_spa_location(edid, blocks * 128))  in extron_write_edid()
456 	memcpy(port->edid_tmp, edid, blocks * 128);  in extron_write_edid()
472 	memcpy(port->edid, port->edid_tmp, blocks * 128);  in extron_write_edid()
809 	while (extron->edid_bytes_read < sizeof(port->edid) && *hex) {  in extron_add_edid()
810 		int err = hex2bin(&port->edid[extron->edid_bytes_read], hex, 1);  in extron_add_edid()
821 	    port->edid[126] == 0) {  in extron_add_edid()
827 	if (extron->edid_bytes_read < sizeof(port->edid))  in extron_add_edid()
1183 		log_printf(adap, file, "EDID: %*ph\n", 16, port->edid + i);  in extron_adap_status()
1256 			 struct v4l2_edid *edid)  in extron_g_edid()  argument
1260 	memset(edid->reserved, 0, sizeof(edid->reserved));  in extron_g_edid()
1263 	if (edid->pad)  in extron_g_edid()
1271 	if (edid->start_block == 0 && edid->blocks == 0) {  in extron_g_edid()
1272 		edid->blocks = port->edid_blocks;  in extron_g_edid()
1275 	if (edid->start_block >= port->edid_blocks)  in extron_g_edid()
1277 	if (edid->blocks > port->edid_blocks - edid->start_block)  in extron_g_edid()
1278 		edid->blocks = port->edid_blocks - edid->start_block;  in extron_g_edid()
1279 	memcpy(edid->edid, port->edid + edid->start_block * 128, edid->blocks * 128);  in extron_g_edid()
1283 static int extron_s_edid(struct file *file, void *_fh, struct v4l2_edid *edid)  in extron_s_edid()  argument
1287 	memset(edid->reserved, 0, sizeof(edid->reserved));  in extron_s_edid()
1290 	if (edid->pad)  in extron_s_edid()
1294 	if (edid->blocks == 0)  in extron_s_edid()
1297 	if (edid->blocks > MAX_EDID_BLOCKS) {  in extron_s_edid()
1298 		edid->blocks = MAX_EDID_BLOCKS;  in extron_s_edid()
1302 	if (cec_get_edid_spa_location(edid->edid, edid->blocks * 128))  in extron_s_edid()
1303 		v4l2_set_edid_phys_addr(edid->edid, edid->blocks * 128, 0);  in extron_s_edid()
1305 	return extron_write_edid(port, edid->edid, edid->blocks);  in extron_s_edid()