[deliverable/linux.git] / drivers / media / video / tm6000 / tm6000-i2c.c

/*
 *  tm6000-i2c.c - driver for TM5600/TM6000/TM6010 USB video capture devices
 *
 *  Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
 *
 *  Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
 *	- Fix SMBus Read Byte command
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation version 2
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/i2c.h>

#include "tm6000.h"
#include "tm6000-regs.h"
#include <media/v4l2-common.h>
#include <media/tuner.h>
#include "tuner-xc2028.h"


/* ----------------------------------------------------------- */

static unsigned int i2c_debug;
module_param(i2c_debug, int, 0644);
MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");

#define i2c_dprintk(lvl, fmt, args...) if (i2c_debug >= lvl) do { \
			printk(KERN_DEBUG "%s at %s: " fmt, \
			dev->name, __func__, ##args); } while (0)

static int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr,
				__u8 reg, char *buf, int len)
{
	int rc;
	unsigned int i2c_packet_limit = 16;

	if (dev->dev_type == TM6010)
		i2c_packet_limit = 80;

	if (!buf)
		return -1;

	if (len < 1 || len > i2c_packet_limit) {
		printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
			len, i2c_packet_limit);
		return -1;
	}

	/* capture mutex */
	rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
		USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
		addr | reg << 8, 0, buf, len);

	if (rc < 0) {
		/* release mutex */
		return rc;
	}

	/* release mutex */
	return rc;
}

/* Generic read - doesn't work fine with 16bit registers */
static int tm6000_i2c_recv_regs(struct tm6000_core *dev, unsigned char addr,
				__u8 reg, char *buf, int len)
{
	int rc;
	u8 b[2];
	unsigned int i2c_packet_limit = 16;

	if (dev->dev_type == TM6010)
		i2c_packet_limit = 64;

	if (!buf)
		return -1;

	if (len < 1 || len > i2c_packet_limit) {
		printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
			len, i2c_packet_limit);
		return -1;
	}

	/* capture mutex */
	if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
		/*
		 * Workaround an I2C bug when reading from zl10353
		 */
		reg -= 1;
		len += 1;

		rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, b, len);

		*buf = b[1];
	} else {
		rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, buf, len);
	}

	/* release mutex */
	return rc;
}

/*
 * read from a 16bit register
 * for example xc2028, xc3028 or xc3028L
 */
static int tm6000_i2c_recv_regs16(struct tm6000_core *dev, unsigned char addr,
				  __u16 reg, char *buf, int len)
{
	int rc;
	unsigned char ureg;

	if (!buf || len != 2)
		return -1;

	/* capture mutex */
	if (dev->dev_type == TM6010) {
		ureg = reg & 0xFF;
		rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
			USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
			addr | (reg & 0xFF00), 0, &ureg, 1);

		if (rc < 0) {
			/* release mutex */
			return rc;
		}

		rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
			USB_RECIP_DEVICE, REQ_35_AFTEK_TUNER_READ,
			reg, 0, buf, len);
	} else {
		rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
			USB_RECIP_DEVICE, REQ_14_SET_GET_I2C_WR2_RDN,
			addr, reg, buf, len);
	}

	/* release mutex */
	return rc;
}

static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap,
			   struct i2c_msg msgs[], int num)
{
	struct tm6000_core *dev = i2c_adap->algo_data;
	int addr, rc, i, byte;

	if (num <= 0)
		return 0;
	for (i = 0; i < num; i++) {
		addr = (msgs[i].addr << 1) & 0xff;
		i2c_dprintk(2, "%s %s addr=0x%x len=%d:",
			 (msgs[i].flags & I2C_M_RD) ? "read" : "write",
			 i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
		if (msgs[i].flags & I2C_M_RD) {
			/* read request without preceding register selection */
			/*
			 * The TM6000 only supports a read transaction
			 * immediately after a 1 or 2 byte write to select
			 * a register.  We cannot fulfil this request.
			 */
			i2c_dprintk(2, " read without preceding write not"
				       " supported");
			rc = -EOPNOTSUPP;
			goto err;
		} else if (i + 1 < num && msgs[i].len <= 2 &&
			   (msgs[i + 1].flags & I2C_M_RD) &&
			   msgs[i].addr == msgs[i + 1].addr) {
			/* 1 or 2 byte write followed by a read */
			if (i2c_debug >= 2)
				for (byte = 0; byte < msgs[i].len; byte++)
					printk(KERN_CONT " %02x", msgs[i].buf[byte]);
			i2c_dprintk(2, "; joined to read %s len=%d:",
				    i == num - 2 ? "stop" : "nonstop",
				    msgs[i + 1].len);

			if (msgs[i].len == 2) {
				rc = tm6000_i2c_recv_regs16(dev, addr,
					msgs[i].buf[0] << 8 | msgs[i].buf[1],
					msgs[i + 1].buf, msgs[i + 1].len);
			} else {
				rc = tm6000_i2c_recv_regs(dev, addr, msgs[i].buf[0],
					msgs[i + 1].buf, msgs[i + 1].len);
			}

			i++;

			if (addr == dev->tuner_addr << 1) {
				tm6000_set_reg(dev, REQ_50_SET_START, 0, 0);
				tm6000_set_reg(dev, REQ_51_SET_STOP, 0, 0);
			}
			if (i2c_debug >= 2)
				for (byte = 0; byte < msgs[i].len; byte++)
					printk(KERN_CONT " %02x", msgs[i].buf[byte]);
		} else {
			/* write bytes */
			if (i2c_debug >= 2)
				for (byte = 0; byte < msgs[i].len; byte++)
					printk(KERN_CONT " %02x", msgs[i].buf[byte]);
			rc = tm6000_i2c_send_regs(dev, addr, msgs[i].buf[0],
				msgs[i].buf + 1, msgs[i].len - 1);
		}
		if (i2c_debug >= 2)
			printk(KERN_CONT "\n");
		if (rc < 0)
			goto err;
	}

	return num;
err:
	i2c_dprintk(2, " ERROR: %i\n", rc);
	return rc;
}

static int tm6000_i2c_eeprom(struct tm6000_core *dev)
{
	int i, rc;
	unsigned char *p = dev->eedata;
	unsigned char bytes[17];

	dev->i2c_client.addr = 0xa0 >> 1;
	dev->eedata_size = 0;

	bytes[16] = '\0';
	for (i = 0; i < sizeof(dev->eedata); ) {
		*p = i;
		rc = tm6000_i2c_recv_regs(dev, 0xa0, i, p, 1);
		if (rc < 1) {
			if (p == dev->eedata)
				goto noeeprom;
			else {
				printk(KERN_WARNING
				"%s: i2c eeprom read error (err=%d)\n",
				dev->name, rc);
			}
			return -EINVAL;
		}
		dev->eedata_size++;
		p++;
		if (0 == (i % 16))
			printk(KERN_INFO "%s: i2c eeprom %02x:", dev->name, i);
		printk(KERN_CONT " %02x", dev->eedata[i]);
		if ((dev->eedata[i] >= ' ') && (dev->eedata[i] <= 'z'))
			bytes[i%16] = dev->eedata[i];
		else
			bytes[i%16] = '.';

		i++;

		if (0 == (i % 16)) {
			bytes[16] = '\0';
			printk(KERN_CONT "  %s\n", bytes);
		}
	}
	if (0 != (i%16)) {
		bytes[i%16] = '\0';
		for (i %= 16; i < 16; i++)
			printk(KERN_CONT "   ");
		printk(KERN_CONT "  %s\n", bytes);
	}

	return 0;

noeeprom:
	printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n",
	       dev->name, rc);
	return -EINVAL;
}

/* ----------------------------------------------------------- */

/*
 * functionality()
 */
static u32 functionality(struct i2c_adapter *adap)
{
	return I2C_FUNC_SMBUS_EMUL;
}

static const struct i2c_algorithm tm6000_algo = {
	.master_xfer   = tm6000_i2c_xfer,
	.functionality = functionality,
};

/* ----------------------------------------------------------- */

/*
 * tm6000_i2c_register()
 * register i2c bus
 */
int tm6000_i2c_register(struct tm6000_core *dev)
{
	int rc;

	dev->i2c_adap.owner = THIS_MODULE;
	dev->i2c_adap.algo = &tm6000_algo;
	dev->i2c_adap.dev.parent = &dev->udev->dev;
	strlcpy(dev->i2c_adap.name, dev->name, sizeof(dev->i2c_adap.name));
	dev->i2c_adap.algo_data = dev;
	i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
	rc = i2c_add_adapter(&dev->i2c_adap);
	if (rc)
		return rc;

	dev->i2c_client.adapter = &dev->i2c_adap;
	strlcpy(dev->i2c_client.name, "tm6000 internal", I2C_NAME_SIZE);
	tm6000_i2c_eeprom(dev);

	return 0;
}

/*
 * tm6000_i2c_unregister()
 * unregister i2c_bus
 */
int tm6000_i2c_unregister(struct tm6000_core *dev)
{
	i2c_del_adapter(&dev->i2c_adap);
	return 0;
}
Commit	Line	Data
9701dc94	1	/*
d0058645 RP	2	* tm6000-i2c.c - driver for TM5600/TM6000/TM6010 USB video capture devices
	3	*
	4	* Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
	5	*
	6	* Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
	7	* - Fix SMBus Read Byte command
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation version 2
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
9701dc94 MCC	21	*/
	22
	23	#include <linux/module.h>
	24	#include <linux/kernel.h>
	25	#include <linux/usb.h>
	26	#include <linux/i2c.h>
	27
	28	#include "tm6000.h"
	29	#include "tm6000-regs.h"
	30	#include <media/v4l2-common.h>
	31	#include <media/tuner.h>
	32	#include "tuner-xc2028.h"
	33
	34
9701dc94 MCC	35	/* ----------------------------------------------------------- */
9701dc94 MCC	36
d7fe4a60	37	static unsigned int i2c_debug;
9701dc94 MCC	38	module_param(i2c_debug, int, 0644);
	39	MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
	40
52e0a72a	41	#define i2c_dprintk(lvl, fmt, args...) if (i2c_debug >= lvl) do { \
9701dc94	42	printk(KERN_DEBUG "%s at %s: " fmt, \
0f063c68	43	dev->name, __func__, ##args); } while (0)
9701dc94	44
4e11502d SR	45	static int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr,
	46	__u8 reg, char *buf, int len)
	47	{
20dead8d	48	int rc;
20dead8d DB	49	unsigned int i2c_packet_limit = 16;
	50
	51	if (dev->dev_type == TM6010)
3874cd77	52	i2c_packet_limit = 80;
20dead8d DB	53
	54	if (!buf)
	55	return -1;
	56
	57	if (len < 1 \|\| len > i2c_packet_limit) {
	58	printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
	59	len, i2c_packet_limit);
	60	return -1;
	61	}
	62
	63	/* capture mutex */
	64	rc = tm6000_read_write_usb(dev, USB_DIR_OUT \| USB_TYPE_VENDOR \|
	65	USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
	66	addr \| reg << 8, 0, buf, len);
	67
	68	if (rc < 0) {
	69	/* release mutex */
	70	return rc;
	71	}
	72
20dead8d DB	73	/* release mutex */
20dead8d DB	74	return rc;
4e11502d SR	75	}
	76
	77	/* Generic read - doesn't work fine with 16bit registers */
	78	static int tm6000_i2c_recv_regs(struct tm6000_core *dev, unsigned char addr,
	79	__u8 reg, char *buf, int len)
	80	{
	81	int rc;
02512fe3	82	u8 b[2];
20dead8d DB	83	unsigned int i2c_packet_limit = 16;
	84
	85	if (dev->dev_type == TM6010)
	86	i2c_packet_limit = 64;
	87
	88	if (!buf)
	89	return -1;
	90
	91	if (len < 1 \|\| len > i2c_packet_limit) {
	92	printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
	93	len, i2c_packet_limit);
	94	return -1;
	95	}
4e11502d	96
20dead8d	97	/* capture mutex */
02512fe3 SR	98	if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
	99	/*
	100	* Workaround an I2C bug when reading from zl10353
	101	*/
	102	reg -= 1;
	103	len += 1;
	104
	105	rc = tm6000_read_write_usb(dev, USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	106	REQ_16_SET_GET_I2C_WR1_RDN, addr \| reg << 8, 0, b, len);
	107
	108	*buf = b[1];
	109	} else {
	110	rc = tm6000_read_write_usb(dev, USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
4e11502d	111	REQ_16_SET_GET_I2C_WR1_RDN, addr \| reg << 8, 0, buf, len);
02512fe3	112	}
4e11502d	113
20dead8d	114	/* release mutex */
4e11502d SR	115	return rc;
	116	}
	117
	118	/*
	119	* read from a 16bit register
	120	* for example xc2028, xc3028 or xc3028L
	121	*/
	122	static int tm6000_i2c_recv_regs16(struct tm6000_core *dev, unsigned char addr,
	123	__u16 reg, char *buf, int len)
	124	{
20dead8d DB	125	int rc;
	126	unsigned char ureg;
	127
	128	if (!buf \|\| len != 2)
	129	return -1;
	130
	131	/* capture mutex */
	132	if (dev->dev_type == TM6010) {
	133	ureg = reg & 0xFF;
	134	rc = tm6000_read_write_usb(dev, USB_DIR_OUT \| USB_TYPE_VENDOR \|
	135	USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
	136	addr \| (reg & 0xFF00), 0, &ureg, 1);
	137
	138	if (rc < 0) {
	139	/* release mutex */
	140	return rc;
	141	}
	142
20dead8d DB	143	rc = tm6000_read_write_usb(dev, USB_DIR_IN \| USB_TYPE_VENDOR \|
	144	USB_RECIP_DEVICE, REQ_35_AFTEK_TUNER_READ,
	145	reg, 0, buf, len);
	146	} else {
	147	rc = tm6000_read_write_usb(dev, USB_DIR_IN \| USB_TYPE_VENDOR \|
	148	USB_RECIP_DEVICE, REQ_14_SET_GET_I2C_WR2_RDN,
	149	addr, reg, buf, len);
	150	}
	151
	152	/* release mutex */
	153	return rc;
4e11502d SR	154	}
4e11502d SR	155
9701dc94 MCC	156	static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap,
	157	struct i2c_msg msgs[], int num)
	158	{
	159	struct tm6000_core *dev = i2c_adap->algo_data;
	160	int addr, rc, i, byte;
	161
	162	if (num <= 0)
	163	return 0;
	164	for (i = 0; i < num; i++) {
e30b9d6c	165	addr = (msgs[i].addr << 1) & 0xff;
52e0a72a	166	i2c_dprintk(2, "%s %s addr=0x%x len=%d:",
9701dc94 MCC	167	(msgs[i].flags & I2C_M_RD) ? "read" : "write",
9701dc94 MCC	168	i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
427f7fac	169	if (msgs[i].flags & I2C_M_RD) {
e30b9d6c CP	170	/* read request without preceding register selection */
	171	/*
	172	* The TM6000 only supports a read transaction
	173	* immediately after a 1 or 2 byte write to select
	174	* a register. We cannot fulfil this request.
	175	*/
	176	i2c_dprintk(2, " read without preceding write not"
	177	" supported");
	178	rc = -EOPNOTSUPP;
	179	goto err;
	180	} else if (i + 1 < num && msgs[i].len <= 2 &&
	181	(msgs[i + 1].flags & I2C_M_RD) &&
	182	msgs[i].addr == msgs[i + 1].addr) {
	183	/* 1 or 2 byte write followed by a read */
	184	if (i2c_debug >= 2)
	185	for (byte = 0; byte < msgs[i].len; byte++)
45dbf0db	186	printk(KERN_CONT " %02x", msgs[i].buf[byte]);
e30b9d6c CP	187	i2c_dprintk(2, "; joined to read %s len=%d:",
	188	i == num - 2 ? "stop" : "nonstop",
	189	msgs[i + 1].len);
4e11502d SR	190
	191	if (msgs[i].len == 2) {
	192	rc = tm6000_i2c_recv_regs16(dev, addr,
	193	msgs[i].buf[0] << 8 \| msgs[i].buf[1],
	194	msgs[i + 1].buf, msgs[i + 1].len);
	195	} else {
	196	rc = tm6000_i2c_recv_regs(dev, addr, msgs[i].buf[0],
	197	msgs[i + 1].buf, msgs[i + 1].len);
	198	}
	199
cf9e1509	200	i++;
20cabed4	201
685b1229	202	if (addr == dev->tuner_addr << 1) {
f1434f4e SR	203	tm6000_set_reg(dev, REQ_50_SET_START, 0, 0);
f1434f4e SR	204	tm6000_set_reg(dev, REQ_51_SET_STOP, 0, 0);
20cabed4	205	}
e30b9d6c CP	206	if (i2c_debug >= 2)
e30b9d6c CP	207	for (byte = 0; byte < msgs[i].len; byte++)
45dbf0db	208	printk(KERN_CONT " %02x", msgs[i].buf[byte]);
9701dc94 MCC	209	} else {
9701dc94 MCC	210	/* write bytes */
e30b9d6c	211	if (i2c_debug >= 2)
9701dc94	212	for (byte = 0; byte < msgs[i].len; byte++)
45dbf0db	213	printk(KERN_CONT " %02x", msgs[i].buf[byte]);
4e11502d	214	rc = tm6000_i2c_send_regs(dev, addr, msgs[i].buf[0],
e30b9d6c	215	msgs[i].buf + 1, msgs[i].len - 1);
9701dc94	216	}
e30b9d6c	217	if (i2c_debug >= 2)
45dbf0db	218	printk(KERN_CONT "\n");
9701dc94 MCC	219	if (rc < 0)
	220	goto err;
	221	}
	222
	223	return num;
	224	err:
52e0a72a	225	i2c_dprintk(2, " ERROR: %i\n", rc);
9701dc94 MCC	226	return rc;
	227	}
	228
792bc09a	229	static int tm6000_i2c_eeprom(struct tm6000_core *dev)
9701dc94 MCC	230	{
9701dc94 MCC	231	int i, rc;
792bc09a	232	unsigned char *p = dev->eedata;
9701dc94 MCC	233	unsigned char bytes[17];
	234
	235	dev->i2c_client.addr = 0xa0 >> 1;
792bc09a	236	dev->eedata_size = 0;
9701dc94	237
d4e15bcd	238	bytes[16] = '\0';
792bc09a MCC	239	for (i = 0; i < sizeof(dev->eedata); ) {
	240	*p = i;
	241	rc = tm6000_i2c_recv_regs(dev, 0xa0, i, p, 1);
d4e15bcd	242	if (rc < 1) {
792bc09a	243	if (p == dev->eedata)
d4e15bcd MCC	244	goto noeeprom;
d4e15bcd MCC	245	else {
9701dc94 MCC	246	printk(KERN_WARNING
	247	"%s: i2c eeprom read error (err=%d)\n",
	248	dev->name, rc);
	249	}
792bc09a	250	return -EINVAL;
9701dc94	251	}
792bc09a	252	dev->eedata_size++;
9701dc94 MCC	253	p++;
	254	if (0 == (i % 16))
	255	printk(KERN_INFO "%s: i2c eeprom %02x:", dev->name, i);
45dbf0db	256	printk(KERN_CONT " %02x", dev->eedata[i]);
792bc09a MCC	257	if ((dev->eedata[i] >= ' ') && (dev->eedata[i] <= 'z'))
792bc09a MCC	258	bytes[i%16] = dev->eedata[i];
52e0a72a TT	259	else
52e0a72a TT	260	bytes[i%16] = '.';
d4e15bcd MCC	261
	262	i++;
	263
	264	if (0 == (i % 16)) {
	265	bytes[16] = '\0';
45dbf0db	266	printk(KERN_CONT " %s\n", bytes);
9701dc94 MCC	267	}
9701dc94 MCC	268	}
d4e15bcd MCC	269	if (0 != (i%16)) {
	270	bytes[i%16] = '\0';
	271	for (i %= 16; i < 16; i++)
45dbf0db MCC	272	printk(KERN_CONT " ");
45dbf0db MCC	273	printk(KERN_CONT " %s\n", bytes);
9701dc94	274	}
d4e15bcd	275
9701dc94	276	return 0;
d4e15bcd MCC	277
	278	noeeprom:
	279	printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n",
792bc09a MCC	280	dev->name, rc);
792bc09a MCC	281	return -EINVAL;
9701dc94 MCC	282	}
	283
	284	/* ----------------------------------------------------------- */
	285
9701dc94 MCC	286	/*
	287	* functionality()
	288	*/
	289	static u32 functionality(struct i2c_adapter *adap)
	290	{
	291	return I2C_FUNC_SMBUS_EMUL;
	292	}
	293
7bd444ed	294	static const struct i2c_algorithm tm6000_algo = {
9701dc94	295	.master_xfer = tm6000_i2c_xfer,
9701dc94 MCC	296	.functionality = functionality,
	297	};
	298
9701dc94 MCC	299	/* ----------------------------------------------------------- */
9701dc94 MCC	300
9701dc94 MCC	301	/*
	302	* tm6000_i2c_register()
	303	* register i2c bus
	304	*/
	305	int tm6000_i2c_register(struct tm6000_core *dev)
	306	{
7bd444ed	307	int rc;
d4e15bcd	308
7bd444ed JD	309	dev->i2c_adap.owner = THIS_MODULE;
7bd444ed JD	310	dev->i2c_adap.algo = &tm6000_algo;
9701dc94	311	dev->i2c_adap.dev.parent = &dev->udev->dev;
7bd444ed	312	strlcpy(dev->i2c_adap.name, dev->name, sizeof(dev->i2c_adap.name));
9701dc94	313	dev->i2c_adap.algo_data = dev;
7bd444ed JD	314	i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
	315	rc = i2c_add_adapter(&dev->i2c_adap);
	316	if (rc)
	317	return rc;
9701dc94	318
9701dc94	319	dev->i2c_client.adapter = &dev->i2c_adap;
7bd444ed	320	strlcpy(dev->i2c_client.name, "tm6000 internal", I2C_NAME_SIZE);
792bc09a	321	tm6000_i2c_eeprom(dev);
d4e15bcd	322
9701dc94 MCC	323	return 0;
	324	}
	325
	326	/*
	327	* tm6000_i2c_unregister()
	328	* unregister i2c_bus
	329	*/
	330	int tm6000_i2c_unregister(struct tm6000_core *dev)
	331	{
	332	i2c_del_adapter(&dev->i2c_adap);
	333	return 0;
	334	}