V4L/DVB (8630): First mxb cleanup phase (a832781c) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/media/video/mxb.c

+6 −7

Original line number	Diff line number	Diff line
		@@ -467,14 +467,14 @@ static int mxb_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data
		already did this in "mxb_vl42_probe" */

		saa7146_vv_init(dev, &vv_data);
		if( 0 != saa7146_register_device(&mxb->video_dev, dev, "mxb", VFL_TYPE_GRABBER)) {
		if (saa7146_register_device(&mxb->video_dev, dev, "mxb", VFL_TYPE_GRABBER)) {
		ERR(("cannot register capture v4l2 device. skipping.\n"));
		return -1;
		}

		/* initialization stuff (vbi) (only for revision > 0 and for extensions which want it)*/
		if( 0 != MXB_BOARD_CAN_DO_VBI(dev)) {
		if( 0 != saa7146_register_device(&mxb->vbi_dev, dev, "mxb", VFL_TYPE_VBI)) {
		if (MXB_BOARD_CAN_DO_VBI(dev)) {
		if (saa7146_register_device(&mxb->vbi_dev, dev, "mxb", VFL_TYPE_VBI)) {
		ERR(("cannot register vbi v4l2 device. skipping.\n"));
		}
		}
		@@ -486,7 +486,7 @@ static int mxb_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data
		i2c_use_client(mxb->saa7111a);
		i2c_use_client(mxb->tuner);

		printk("mxb: found 'Multimedia eXtension Board'-%d.\n",mxb_num);
		printk("mxb: found Multimedia eXtension Board #%d.\n", mxb_num);

		mxb_num++;
		mxb_init_done(dev);
		@@ -737,8 +737,8 @@ static int mxb_ioctl(struct saa7146_fh fh, unsigned int cmd, void arg)
		DEB_EE(("VIDIOC_G_TUNER: %d\n", t->index));

		memset(t,0,sizeof(*t));
		strcpy(t->name, "Television");

		strlcpy(t->name, "Television", sizeof(t->name));
		t->type = V4L2_TUNER_ANALOG_TV;
		t->capability = V4L2_TUNER_CAP_NORM \| V4L2_TUNER_CAP_STEREO \| V4L2_TUNER_CAP_LANG1 \| V4L2_TUNER_CAP_LANG2 \| V4L2_TUNER_CAP_SAP;
		t->rangelow = 772; /* 48.25 MHZ / 62.5 kHz = 772, see fi1216mk2-specs, page 2 */
		@@ -746,7 +746,6 @@ static int mxb_ioctl(struct saa7146_fh fh, unsigned int cmd, void arg)
		/* FIXME: add the real signal strength here */
		t->signal = 0xffff;
		t->afc = 0;

		mxb->tda9840->driver->command(mxb->tda9840,TDA9840_DETECT, &byte);
		t->audmode = mxb->cur_mode;

drivers/media/video/tda9840.c

+58 −108

Original line number	Diff line number	Diff line
		@@ -2,6 +2,7 @@
		tda9840 - i2c-driver for the tda9840 by SGS Thomson

		Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
		Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>

		The tda9840 is a stereo/dual sound processor with digital
		identification. It can be found at address 0x84 on the i2c-bus.
		@@ -28,15 +29,18 @@
		#include <linux/module.h>
		#include <linux/ioctl.h>
		#include <linux/i2c.h>

		#include <media/v4l2-common.h>
		#include <media/v4l2-i2c-drv-legacy.h>
		#include "tda9840.h"

		static int debug; /* insmod parameter */
		MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
		MODULE_DESCRIPTION("tda9840 driver");
		MODULE_LICENSE("GPL");

		static int debug;
		module_param(debug, int, 0644);
		MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");

		#define dprintk(args...) \
		do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
		MODULE_PARM_DESC(debug, "Debug level (0-1)");

		#define SWITCH 0x00
		#define LEVEL_ADJUST 0x02
		@@ -49,18 +53,21 @@ static unsigned short normal_i2c[] = { I2C_ADDR_TDA9840, I2C_CLIENT_END };
		/* magic definition of all other variables and things */
		I2C_CLIENT_INSMOD;

		static struct i2c_driver driver;
		static struct i2c_client client_template;
		static void tda9840_write(struct i2c_client *client, u8 reg, u8 val)
		{
		if (i2c_smbus_write_byte_data(client, reg, val))
		v4l_dbg(1, debug, client, "error writing %02x to %02x\n",
		val, reg);
		}

		static int command(struct i2c_client client, unsigned int cmd, void arg)
		static int tda9840_command(struct i2c_client client, unsigned cmd, void arg)
		{
		int result;
		int byte = (int )arg;

		switch (cmd) {
		case TDA9840_SWITCH:

		dprintk("TDA9840_SWITCH: 0x%02x\n", byte);
		v4l_dbg(1, debug, client, "TDA9840_SWITCH: 0x%02x\n", byte);

		if (byte != TDA9840_SET_MONO
		&& byte != TDA9840_SET_MUTE
		@@ -73,14 +80,11 @@ static int command(struct i2c_client client, unsigned int cmd, void arg)
		return -EINVAL;
		}

		result = i2c_smbus_write_byte_data(client, SWITCH, byte);
		if (result)
		dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
		tda9840_write(client, SWITCH, byte);
		break;

		case TDA9840_LEVEL_ADJUST:

		dprintk("TDA9840_LEVEL_ADJUST: %d\n", byte);
		v4l_dbg(1, debug, client, "TDA9840_LEVEL_ADJUST: %d\n", byte);

		/* check for correct range */
		if (byte > 25 \|\| byte < -20)
		@@ -92,15 +96,11 @@ static int command(struct i2c_client client, unsigned int cmd, void arg)
		byte += 0x8;
		else
		byte = -byte;

		result = i2c_smbus_write_byte_data(client, LEVEL_ADJUST, byte);
		if (result)
		dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
		tda9840_write(client, LEVEL_ADJUST, byte);
		break;

		case TDA9840_STEREO_ADJUST:

		dprintk("TDA9840_STEREO_ADJUST: %d\n", byte);
		v4l_dbg(1, debug, client, "TDA9840_STEREO_ADJUST: %d\n", byte);

		/* check for correct range */
		if (byte > 25 \|\| byte < -24)
		@@ -113,9 +113,7 @@ static int command(struct i2c_client client, unsigned int cmd, void arg)
		else
		byte = -byte;

		result = i2c_smbus_write_byte_data(client, STEREO_ADJUST, byte);
		if (result)
		dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
		tda9840_write(client, STEREO_ADJUST, byte);
		break;

		case TDA9840_DETECT: {
		@@ -123,29 +121,29 @@ static int command(struct i2c_client client, unsigned int cmd, void arg)

		byte = i2c_smbus_read_byte_data(client, STEREO_ADJUST);
		if (byte == -1) {
		dprintk("i2c_smbus_read_byte_data() failed\n");
		v4l_dbg(1, debug, client,
		"i2c_smbus_read_byte_data() failed\n");
		return -EIO;
		}

		if (0 != (byte & 0x80)) {
		dprintk("TDA9840_DETECT: register contents invalid\n");
		if (byte & 0x80) {
		v4l_dbg(1, debug, client,
		"TDA9840_DETECT: register contents invalid\n");
		return -EINVAL;
		}

		dprintk("TDA9840_DETECT: byte: 0x%02x\n", byte);
		*ret = ((byte & 0x60) >> 5);
		v4l_dbg(1, debug, client, "TDA9840_DETECT: byte: 0x%02x\n", byte);
		*ret = (byte & 0x60) >> 5;
		result = 0;
		break;
		}
		case TDA9840_TEST:
		dprintk("TDA9840_TEST: 0x%02x\n", byte);
		v4l_dbg(1, debug, client, "TDA9840_TEST: 0x%02x\n", byte);

		/* mask out irrelevant bits */
		byte &= 0x3;

		result = i2c_smbus_write_byte_data(client, TEST, byte);
		if (result)
		dprintk("i2c_smbus_write_byte() failed, ret:%d\n", result);
		tda9840_write(client, TEST, byte);
		break;
		default:
		return -ENOIOCTLCMD;
		@@ -157,99 +155,51 @@ static int command(struct i2c_client client, unsigned int cmd, void arg)
		return 0;
		}

		static int detect(struct i2c_adapter *adapter, int address, int kind)
		static int tda9840_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		struct i2c_client *client;
		int result = 0;

		int byte = 0x0;
		int result;
		int byte;

		/* let's see whether this adapter can support what we need */
		if (0 == i2c_check_functionality(adapter,
		if (!i2c_check_functionality(client->adapter,
		I2C_FUNC_SMBUS_READ_BYTE_DATA \|
		I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) {
		I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
		return 0;
		}

		/* allocate memory for client structure */
		client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
		if (!client) {
		printk("not enough kernel memory\n");
		return -ENOMEM;
		}

		/* fill client structure */
		memcpy(client, &client_template, sizeof(struct i2c_client));
		client->addr = address;
		client->adapter = adapter;

		/* tell the i2c layer a new client has arrived */
		if (0 != (result = i2c_attach_client(client))) {
		kfree(client);
		return result;
		}
		v4l_info(client, "chip found @ 0x%x (%s)\n",
		client->addr << 1, client->adapter->name);

		/* set initial values for level & stereo - adjustment, mode */
		byte = 0;
		result = command(client, TDA9840_LEVEL_ADJUST, &byte);
		result += command(client, TDA9840_STEREO_ADJUST, &byte);
		result = tda9840_command(client, TDA9840_LEVEL_ADJUST, &byte);
		result += tda9840_command(client, TDA9840_STEREO_ADJUST, &byte);
		byte = TDA9840_SET_MONO;
		result = command(client, TDA9840_SWITCH, &byte);
		result = tda9840_command(client, TDA9840_SWITCH, &byte);
		if (result) {
		dprintk("could not initialize tda9840\n");
		v4l_dbg(1, debug, client, "could not initialize tda9840\n");
		return -ENODEV;
		}

		printk("tda9840: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]);
		return 0;
		}

		static int attach(struct i2c_adapter *adapter)
		static int tda9840_legacy_probe(struct i2c_adapter *adapter)
		{
		/* let's see whether this is a know adapter we can attach to */
		if (adapter->id != I2C_HW_SAA7146) {
		dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id);
		return -ENODEV;
		/* Let's see whether this is a known adapter we can attach to.
		Prevents conflicts with tvaudio.c. */
		return adapter->id == I2C_HW_SAA7146;
		}

		return i2c_probe(adapter, &addr_data, &detect);
		}

		static int detach(struct i2c_client *client)
		{
		int ret = i2c_detach_client(client);
		kfree(client);
		return ret;
		}

		static struct i2c_driver driver = {
		.driver = {
		.name = "tda9840",
		},
		.id = I2C_DRIVERID_TDA9840,
		.attach_adapter = attach,
		.detach_client = detach,
		.command = command,
		static const struct i2c_device_id tda9840_id[] = {
		{ "tda9840", 0 },
		{ }
		};
		MODULE_DEVICE_TABLE(i2c, tda9840_id);

		static struct i2c_client client_template = {
		static struct v4l2_i2c_driver_data v4l2_i2c_data = {
		.name = "tda9840",
		.driver = &driver,
		.driverid = I2C_DRIVERID_TDA9840,
		.command = tda9840_command,
		.probe = tda9840_probe,
		.legacy_probe = tda9840_legacy_probe,
		.id_table = tda9840_id,
		};

		static int __init this_module_init(void)
		{
		return i2c_add_driver(&driver);
		}

		static void __exit this_module_exit(void)
		{
		i2c_del_driver(&driver);
		}

		module_init(this_module_init);
		module_exit(this_module_exit);

		MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
		MODULE_DESCRIPTION("tda9840 driver");
		MODULE_LICENSE("GPL");

drivers/media/video/tea6415c.c

+40 −91

Original line number	Diff line number	Diff line
		@@ -2,6 +2,7 @@
		tea6415c - i2c-driver for the tea6415c by SGS Thomson

		Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
		Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>

		The tea6415c is a bus controlled video-matrix-switch
		with 8 inputs and 6 outputs.
		@@ -30,18 +31,18 @@
		#include <linux/module.h>
		#include <linux/ioctl.h>
		#include <linux/i2c.h>

		#include <media/v4l2-common.h>
		#include <media/v4l2-i2c-drv-legacy.h>
		#include "tea6415c.h"

		static int debug; /* insmod parameter */
		module_param(debug, int, 0644);
		MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");
		MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
		MODULE_DESCRIPTION("tea6415c driver");
		MODULE_LICENSE("GPL");

		#define dprintk(args...) \
		do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
		static int debug;
		module_param(debug, int, 0644);

		#define TEA6415C_NUM_INPUTS 8
		#define TEA6415C_NUM_OUTPUTS 6
		MODULE_PARM_DESC(debug, "Debug level (0-1)");

		/* addresses to scan, found only at 0x03 and/or 0x43 (7-bit) */
		static unsigned short normal_i2c[] = { I2C_TEA6415C_1, I2C_TEA6415C_2, I2C_CLIENT_END };
		@@ -49,60 +50,6 @@ static unsigned short normal_i2c[] = { I2C_TEA6415C_1, I2C_TEA6415C_2, I2C_CLIEN
		/* magic definition of all other variables and things */
		I2C_CLIENT_INSMOD;

		static struct i2c_driver driver;
		static struct i2c_client client_template;

		/* this function is called by i2c_probe */
		static int detect(struct i2c_adapter *adapter, int address, int kind)
		{
		struct i2c_client *client = NULL;
		int err = 0;

		/* let's see whether this adapter can support what we need */
		if (0 == i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE)) {
		return 0;
		}

		/* allocate memory for client structure */
		client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
		if (!client) {
		return -ENOMEM;
		}

		/* fill client structure */
		memcpy(client, &client_template, sizeof(struct i2c_client));
		client->addr = address;
		client->adapter = adapter;

		/* tell the i2c layer a new client has arrived */
		if (0 != (err = i2c_attach_client(client))) {
		kfree(client);
		return err;
		}

		printk("tea6415c: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]);

		return 0;
		}

		static int attach(struct i2c_adapter *adapter)
		{
		/* let's see whether this is a know adapter we can attach to */
		if (adapter->id != I2C_HW_SAA7146) {
		dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id);
		return -ENODEV;
		}

		return i2c_probe(adapter, &addr_data, &detect);
		}

		static int detach(struct i2c_client *client)
		{
		int ret = i2c_detach_client(client);
		kfree(client);
		return ret;
		}

		/* makes a connection between the input-pin 'i' and the output-pin 'o'
		for the tea6415c-client 'client' */
		static int switch_matrix(struct i2c_client *client, int i, int o)
		@@ -110,7 +57,7 @@ static int switch_matrix(struct i2c_client *client, int i, int o)
		u8 byte = 0;
		int ret;

		dprintk("adr:0x%02x, i:%d, o:%d\n", client->addr, i, o);
		v4l_dbg(1, debug, client, "i=%d, o=%d\n", i, o);

		/* check if the pins are valid */
		if (0 == ((1 == i \|\| 3 == i \|\| 5 == i \|\| 6 == i \|\| 8 == i \|\| 10 == i \|\| 20 == i \|\| 11 == i)
		@@ -168,14 +115,14 @@ static int switch_matrix(struct i2c_client *client, int i, int o)

		ret = i2c_smbus_write_byte(client, byte);
		if (ret) {
		dprintk("i2c_smbus_write_byte() failed, ret:%d\n", ret);
		v4l_dbg(1, debug, client,
		"i2c_smbus_write_byte() failed, ret:%d\n", ret);
		return -EIO;
		}

		return ret;
		}

		static int command(struct i2c_client client, unsigned int cmd, void arg)
		static int tea6415c_command(struct i2c_client client, unsigned cmd, void arg)
		{
		struct tea6415c_multiplex v = (struct tea6415c_multiplex )arg;
		int result = 0;
		@@ -187,38 +134,40 @@ static int command(struct i2c_client client, unsigned int cmd, void arg)
		default:
		return -ENOIOCTLCMD;
		}

		return result;
		}

		static struct i2c_driver driver = {
		.driver = {
		.name = "tea6415c",
		},
		.id = I2C_DRIVERID_TEA6415C,
		.attach_adapter = attach,
		.detach_client = detach,
		.command = command,
		};

		static struct i2c_client client_template = {
		.name = "tea6415c",
		.driver = &driver,
		};

		static int __init this_module_init(void)
		/* this function is called by i2c_probe */
		static int tea6415c_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		return i2c_add_driver(&driver);
		/* let's see whether this adapter can support what we need */
		if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE))
		return 0;

		v4l_info(client, "chip found @ 0x%x (%s)\n",
		client->addr << 1, client->adapter->name);
		return 0;
		}

		static void __exit this_module_exit(void)
		static int tea6415c_legacy_probe(struct i2c_adapter *adapter)
		{
		i2c_del_driver(&driver);
		/* Let's see whether this is a known adapter we can attach to.
		Prevents conflicts with tvaudio.c. */
		return adapter->id == I2C_HW_SAA7146;
		}

		module_init(this_module_init);
		module_exit(this_module_exit);
		static const struct i2c_device_id tea6415c_id[] = {
		{ "tea6415c", 0 },
		{ }
		};
		MODULE_DEVICE_TABLE(i2c, tea6415c_id);

		MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
		MODULE_DESCRIPTION("tea6415c driver");
		MODULE_LICENSE("GPL");
		static struct v4l2_i2c_driver_data v4l2_i2c_data = {
		.name = "tea6415c",
		.driverid = I2C_DRIVERID_TEA6415C,
		.command = tea6415c_command,
		.probe = tea6415c_probe,
		.legacy_probe = tea6415c_legacy_probe,
		.id_table = tea6415c_id,
		};

drivers/media/video/tea6420.c

+51 −96

Original line number	Diff line number	Diff line
		@@ -2,6 +2,7 @@
		tea6420 - i2c-driver for the tea6420 by SGS Thomson

		Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
		Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>

		The tea6420 is a bus controlled audio-matrix with 5 stereo inputs,
		4 stereo outputs and gain control for each output.
		@@ -30,15 +31,18 @@
		#include <linux/module.h>
		#include <linux/ioctl.h>
		#include <linux/i2c.h>

		#include <media/v4l2-common.h>
		#include <media/v4l2-i2c-drv-legacy.h>
		#include "tea6420.h"

		static int debug; /* insmod parameter */
		MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
		MODULE_DESCRIPTION("tea6420 driver");
		MODULE_LICENSE("GPL");

		static int debug;
		module_param(debug, int, 0644);
		MODULE_PARM_DESC(debug, "Turn on/off device debugging (default:off).");

		#define dprintk(args...) \
		do { if (debug) { printk("%s: %s()[%d]: ", KBUILD_MODNAME, __func__, __LINE__); printk(args); } } while (0)
		MODULE_PARM_DESC(debug, "Debug level (0-1)");

		/* addresses to scan, found only at 0x4c and/or 0x4d (7-Bit) */
		static unsigned short normal_i2c[] = { I2C_ADDR_TEA6420_1, I2C_ADDR_TEA6420_2, I2C_CLIENT_END };
		@@ -46,17 +50,14 @@ static unsigned short normal_i2c[] = { I2C_ADDR_TEA6420_1, I2C_ADDR_TEA6420_2, I
		/* magic definition of all other variables and things */
		I2C_CLIENT_INSMOD;

		static struct i2c_driver driver;
		static struct i2c_client client_template;

		/* make a connection between the input 'i' and the output 'o'
		with gain 'g' for the tea6420-client 'client' (note: i = 6 means 'mute') */
		static int tea6420_switch(struct i2c_client *client, int i, int o, int g)
		{
		u8 byte = 0;
		u8 byte;
		int ret;

		dprintk("adr:0x%02x, i:%d, o:%d, g:%d\n", client->addr, i, o, g);
		v4l_dbg(1, debug, client, "i=%d, o=%d, g=%d\n", i, o, g);

		/* check if the parameters are valid */
		if (i < 1 \|\| i > 6 \|\| o < 1 \|\| o > 4 \|\| g < 0 \|\| g > 6 \|\| g % 2 != 0)
		@@ -82,40 +83,41 @@ static int tea6420_switch(struct i2c_client *client, int i, int o, int g)

		ret = i2c_smbus_write_byte(client, byte);
		if (ret) {
		dprintk("i2c_smbus_write_byte() failed, ret:%d\n", ret);
		v4l_dbg(1, debug, client,
		"i2c_smbus_write_byte() failed, ret:%d\n", ret);
		return -EIO;
		}

		return 0;
		}

		/* this function is called by i2c_probe */
		static int tea6420_detect(struct i2c_adapter *adapter, int address, int kind)
		static int tea6420_command(struct i2c_client client, unsigned cmd, void arg)
		{
		struct i2c_client *client;
		int err = 0, i = 0;
		struct tea6420_multiplex a = (struct tea6420_multiplex )arg;
		int result = 0;

		/* let's see whether this adapter can support what we need */
		if (0 == i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE)) {
		return 0;
		switch (cmd) {
		case TEA6420_SWITCH:
		result = tea6420_switch(client, a->in, a->out, a->gain);
		break;
		default:
		return -ENOIOCTLCMD;
		}

		/* allocate memory for client structure */
		client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
		if (!client) {
		return -ENOMEM;
		return result;
		}

		/* fill client structure */
		memcpy(client, &client_template, sizeof(struct i2c_client));
		client->addr = address;
		client->adapter = adapter;
		/* this function is called by i2c_probe */
		static int tea6420_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		int err, i;

		/* tell the i2c layer a new client has arrived */
		if (0 != (err = i2c_attach_client(client))) {
		kfree(client);
		return err;
		}
		/* let's see whether this adapter can support what we need */
		if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE))
		return -EIO;

		v4l_info(client, "chip found @ 0x%x (%s)\n",
		client->addr << 1, client->adapter->name);

		/* set initial values: set "mute"-input to all outputs at gain 0 */
		err = 0;
		@@ -123,78 +125,31 @@ static int tea6420_detect(struct i2c_adapter *adapter, int address, int kind)
		err += tea6420_switch(client, 6, i, 0);
		}
		if (err) {
		dprintk("could not initialize tea6420\n");
		v4l_dbg(1, debug, client, "could not initialize tea6420\n");
		kfree(client);
		return -ENODEV;
		}

		printk("tea6420: detected @ 0x%02x on adapter %s\n", address, &client->adapter->name[0]);

		return 0;
		}

		static int attach(struct i2c_adapter *adapter)
		{
		/* let's see whether this is a know adapter we can attach to */
		if (adapter->id != I2C_HW_SAA7146) {
		dprintk("refusing to probe on unknown adapter [name='%s',id=0x%x]\n", adapter->name, adapter->id);
		return -ENODEV;
		}

		return i2c_probe(adapter, &addr_data, &tea6420_detect);
		}

		static int detach(struct i2c_client *client)
		{
		int ret = i2c_detach_client(client);
		kfree(client);
		return ret;
		}

		static int command(struct i2c_client client, unsigned int cmd, void arg)
		static int tea6420_legacy_probe(struct i2c_adapter *adapter)
		{
		struct tea6420_multiplex a = (struct tea6420_multiplex )arg;
		int result = 0;

		switch (cmd) {
		case TEA6420_SWITCH:
		result = tea6420_switch(client, a->in, a->out, a->gain);
		break;
		default:
		return -ENOIOCTLCMD;
		/* Let's see whether this is a known adapter we can attach to.
		Prevents conflicts with tvaudio.c. */
		return adapter->id == I2C_HW_SAA7146;
		}

		return result;
		}

		static struct i2c_driver driver = {
		.driver = {
		.name = "tea6420",
		},
		.id = I2C_DRIVERID_TEA6420,
		.attach_adapter = attach,
		.detach_client = detach,
		.command = command,
		static const struct i2c_device_id tea6420_id[] = {
		{ "tea6420", 0 },
		{ }
		};
		MODULE_DEVICE_TABLE(i2c, tea6420_id);

		static struct i2c_client client_template = {
		static struct v4l2_i2c_driver_data v4l2_i2c_data = {
		.name = "tea6420",
		.driver = &driver,
		.driverid = I2C_DRIVERID_TEA6420,
		.command = tea6420_command,
		.probe = tea6420_probe,
		.legacy_probe = tea6420_legacy_probe,
		.id_table = tea6420_id,
		};

		static int __init this_module_init(void)
		{
		return i2c_add_driver(&driver);
		}

		static void __exit this_module_exit(void)
		{
		i2c_del_driver(&driver);
		}

		module_init(this_module_init);
		module_exit(this_module_exit);

		MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
		MODULE_DESCRIPTION("tea6420 driver");
		MODULE_LICENSE("GPL");