1 // SPDX-License-Identifier: GPL-2.0-or-later
11 #include "saa7134-reg.h"
19 #include <media/v4l2-common.h>
21 /* ----------------------------------------------------------- */
44 /* ----------------------------------------------------------- */
63 	NO_ACKN       = 10, // no acknowledge after data byte transfer
77 	STOP          = 1,  // stop condition, no associated byte transfer
78 	CONTINUE      = 2,  // continue with byte transfer
79 	START         = 3   // start condition with byte transfer
204 		return -EIO;  in i2c_send_byte()
207 		return -EIO;  in i2c_send_byte()
218 		return -EIO;  in i2c_recv_byte()
221 		return -EIO;  in i2c_recv_byte()
230 	struct saa7134_dev *dev = i2c_adap->algo_data;  in saa7134_i2c_xfer()
233 	int addr,rc,i,byte;  in saa7134_i2c_xfer()  local
238 			return -EIO;  in saa7134_i2c_xfer()
269 			for (byte = 0; byte < msgs[i].len; byte++) {  in saa7134_i2c_xfer()
275 				msgs[i].buf[byte] = rc;  in saa7134_i2c_xfer()
277 			/* discard mysterious extra byte when reading  in saa7134_i2c_xfer()
290 			for (byte = 0; byte < msgs[i].len; byte++) {  in saa7134_i2c_xfer()
291 				data = msgs[i].buf[byte];  in saa7134_i2c_xfer()
302 	rc = -EIO;  in saa7134_i2c_xfer()
321 /* ----------------------------------------------------------- */
343 /* ----------------------------------------------------------- */
346  * On Medion 7134 reading the SAA7134 chip config EEPROM needs DVB-T
356 					   .buf = &subaddr, .len = 1},  in saa7134_i2c_eeprom_md7134_gate()
359 					   .buf = &dmdregval, .len = 1}  in saa7134_i2c_eeprom_md7134_gate()
362 					   .buf = data, .len = 2} };  in saa7134_i2c_eeprom_md7134_gate()
364 	ret = i2c_transfer(&dev->i2c_adap, i2cgatemsg_r, 2);  in saa7134_i2c_eeprom_md7134_gate()
366 		pr_debug("%s: DVB-T demod i2c gate was left open\n",  in saa7134_i2c_eeprom_md7134_gate()
367 			 dev->name);  in saa7134_i2c_eeprom_md7134_gate()
371 		if (i2c_transfer(&dev->i2c_adap, i2cgatemsg_w, 1) != 1)  in saa7134_i2c_eeprom_md7134_gate()
373 			       dev->name);  in saa7134_i2c_eeprom_md7134_gate()
378 saa7134_i2c_eeprom(struct saa7134_dev *dev, unsigned char *eedata, int len)  in saa7134_i2c_eeprom()  argument
383 	if (dev->board == SAA7134_BOARD_MD7134)  in saa7134_i2c_eeprom()
386 	dev->i2c_client.addr = 0xa0 >> 1;  in saa7134_i2c_eeprom()
388 	if (1 != (err = i2c_master_send(&dev->i2c_client,&buf,1))) {  in saa7134_i2c_eeprom()
390 		       dev->name,err);  in saa7134_i2c_eeprom()
391 		return -1;  in saa7134_i2c_eeprom()
393 	if (len != (err = i2c_master_recv(&dev->i2c_client,eedata,len))) {  in saa7134_i2c_eeprom()
395 		       dev->name,err);  in saa7134_i2c_eeprom()
396 		return -1;  in saa7134_i2c_eeprom()
399 	for (i = 0; i < len; i += 16) {  in saa7134_i2c_eeprom()
400 		int size = (len - i) > 16 ? 16 : len - i;  in saa7134_i2c_eeprom()
422 		c->addr = i;  in do_i2c_scan()
433 	dev->i2c_adap = saa7134_adap_template;  in saa7134_i2c_register()
434 	dev->i2c_adap.dev.parent = &dev->pci->dev;  in saa7134_i2c_register()
435 	strscpy(dev->i2c_adap.name, dev->name, sizeof(dev->i2c_adap.name));  in saa7134_i2c_register()
436 	dev->i2c_adap.algo_data = dev;  in saa7134_i2c_register()
437 	i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);  in saa7134_i2c_register()
438 	i2c_add_adapter(&dev->i2c_adap);  in saa7134_i2c_register()
440 	dev->i2c_client = saa7134_client_template;  in saa7134_i2c_register()
441 	dev->i2c_client.adapter = &dev->i2c_adap;  in saa7134_i2c_register()
443 	saa7134_i2c_eeprom(dev,dev->eedata,sizeof(dev->eedata));  in saa7134_i2c_register()
445 		do_i2c_scan(&dev->i2c_client);  in saa7134_i2c_register()
454 	i2c_del_adapter(&dev->i2c_adap);  in saa7134_i2c_unregister()