[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / bt856.c

/* 
 * bt856 - BT856A Digital Video Encoder (Rockwell Part)
 *
 * Copyright (C) 1999 Mike Bernson <mike@mlb.org>
 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 *
 * Modifications for LML33/DC10plus unified driver
 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
 *
 * This code was modify/ported from the saa7111 driver written
 * by Dave Perks.
 *
 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *   - moved over to linux>=2.4.x i2c protocol (9/9/2002)
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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/init.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/sched.h>
#include <linux/types.h>

#include <linux/videodev.h>
#include <asm/uaccess.h>

MODULE_DESCRIPTION("Brooktree-856A video encoder driver");
MODULE_AUTHOR("Mike Bernson & Dave Perks");
MODULE_LICENSE("GPL");

#include <linux/i2c.h>
#include <linux/i2c-dev.h>

#define I2C_NAME(s) (s)->name

#include <linux/video_encoder.h>

static int debug = 0;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");

#define dprintk(num, format, args...) \
	do { \
		if (debug >= num) \
			printk(format, ##args); \
	} while (0)

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

#define REG_OFFSET  0xCE

struct bt856 {
	unsigned char reg[32];

	int norm;
	int enable;
	int bright;
	int contrast;
	int hue;
	int sat;
};

#define   I2C_BT856        0x88

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

static inline int
bt856_write (struct i2c_client *client,
	     u8                 reg,
	     u8                 value)
{
	struct bt856 *encoder = i2c_get_clientdata(client);

	encoder->reg[reg - REG_OFFSET] = value;
	return i2c_smbus_write_byte_data(client, reg, value);
}

static inline int
bt856_setbit (struct i2c_client *client,
	      u8                 reg,
	      u8                 bit,
	      u8                 value)
{
	struct bt856 *encoder = i2c_get_clientdata(client);

	return bt856_write(client, reg,
			   (encoder->
			    reg[reg - REG_OFFSET] & ~(1 << bit)) |
			    (value ? (1 << bit) : 0));
}

static void
bt856_dump (struct i2c_client *client)
{
	int i;
	struct bt856 *encoder = i2c_get_clientdata(client);

	printk(KERN_INFO "%s: register dump:", I2C_NAME(client));
	for (i = 0xd6; i <= 0xde; i += 2)
		printk(" %02x", encoder->reg[i - REG_OFFSET]);
	printk("\n");
}

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

static int
bt856_command (struct i2c_client *client,
	       unsigned int       cmd,
	       void              *arg)
{
	struct bt856 *encoder = i2c_get_clientdata(client);

	switch (cmd) {

	case 0:
		/* This is just for testing!!! */
		dprintk(1, KERN_INFO "bt856: init\n");
		bt856_write(client, 0xdc, 0x18);
		bt856_write(client, 0xda, 0);
		bt856_write(client, 0xde, 0);

		bt856_setbit(client, 0xdc, 3, 1);
		//bt856_setbit(client, 0xdc, 6, 0);
		bt856_setbit(client, 0xdc, 4, 1);

		switch (encoder->norm) {

		case VIDEO_MODE_NTSC:
			bt856_setbit(client, 0xdc, 2, 0);
			break;

		case VIDEO_MODE_PAL:
			bt856_setbit(client, 0xdc, 2, 1);
			break;
		}

		bt856_setbit(client, 0xdc, 1, 1);
		bt856_setbit(client, 0xde, 4, 0);
		bt856_setbit(client, 0xde, 3, 1);
		if (debug != 0)
			bt856_dump(client);
		break;

	case ENCODER_GET_CAPABILITIES:
	{
		struct video_encoder_capability *cap = arg;

		dprintk(1, KERN_INFO "%s: get capabilities\n",
			I2C_NAME(client));

		cap->flags = VIDEO_ENCODER_PAL |
			     VIDEO_ENCODER_NTSC |
			     VIDEO_ENCODER_CCIR;
		cap->inputs = 2;
		cap->outputs = 1;
	}
		break;

	case ENCODER_SET_NORM:
	{
		int *iarg = arg;

		dprintk(1, KERN_INFO "%s: set norm %d\n", I2C_NAME(client),
			*iarg);

		switch (*iarg) {

		case VIDEO_MODE_NTSC:
			bt856_setbit(client, 0xdc, 2, 0);
			break;

		case VIDEO_MODE_PAL:
			bt856_setbit(client, 0xdc, 2, 1);
			bt856_setbit(client, 0xda, 0, 0);
			//bt856_setbit(client, 0xda, 0, 1);
			break;

		default:
			return -EINVAL;

		}
		encoder->norm = *iarg;
		if (debug != 0)
			bt856_dump(client);
	}
		break;

	case ENCODER_SET_INPUT:
	{
		int *iarg = arg;

		dprintk(1, KERN_INFO "%s: set input %d\n", I2C_NAME(client),
			*iarg);

		/* We only have video bus.
		 * iarg = 0: input is from bt819
		 * iarg = 1: input is from ZR36060 */

		switch (*iarg) {

		case 0:
			bt856_setbit(client, 0xde, 4, 0);
			bt856_setbit(client, 0xde, 3, 1);
			bt856_setbit(client, 0xdc, 3, 1);
			bt856_setbit(client, 0xdc, 6, 0);
			break;
		case 1:
			bt856_setbit(client, 0xde, 4, 0);
			bt856_setbit(client, 0xde, 3, 1);
			bt856_setbit(client, 0xdc, 3, 1);
			bt856_setbit(client, 0xdc, 6, 1);
			break;
		case 2:	// Color bar
			bt856_setbit(client, 0xdc, 3, 0);
			bt856_setbit(client, 0xde, 4, 1);
			break;
		default:
			return -EINVAL;

		}

		if (debug != 0)
			bt856_dump(client);
	}
		break;

	case ENCODER_SET_OUTPUT:
	{
		int *iarg = arg;

		dprintk(1, KERN_INFO "%s: set output %d\n", I2C_NAME(client),
			*iarg);

		/* not much choice of outputs */
		if (*iarg != 0) {
			return -EINVAL;
		}
	}
		break;

	case ENCODER_ENABLE_OUTPUT:
	{
		int *iarg = arg;

		encoder->enable = !!*iarg;

		dprintk(1, KERN_INFO "%s: enable output %d\n",
			I2C_NAME(client), encoder->enable);
	}
		break;

	default:
		return -EINVAL;
	}

	return 0;
}

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

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */
static unsigned short normal_i2c[] = { I2C_BT856 >> 1, I2C_CLIENT_END };

static unsigned short ignore = I2C_CLIENT_END;
                                                                                
static struct i2c_client_address_data addr_data = {
	.normal_i2c		= normal_i2c,
	.probe			= &ignore,
	.ignore			= &ignore,
};

static struct i2c_driver i2c_driver_bt856;

static int
bt856_detect_client (struct i2c_adapter *adapter,
		     int                 address,
		     int                 kind)
{
	int i;
	struct i2c_client *client;
	struct bt856 *encoder;

	dprintk(1,
		KERN_INFO
		"bt856.c: detecting bt856 client on address 0x%x\n",
		address << 1);

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return 0;

	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
	if (client == 0)
		return -ENOMEM;
	client->addr = address;
	client->adapter = adapter;
	client->driver = &i2c_driver_bt856;
	strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client)));

	encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL);
	if (encoder == NULL) {
		kfree(client);
		return -ENOMEM;
	}
	encoder->norm = VIDEO_MODE_NTSC;
	encoder->enable = 1;
	i2c_set_clientdata(client, encoder);

	i = i2c_attach_client(client);
	if (i) {
		kfree(client);
		kfree(encoder);
		return i;
	}

	bt856_write(client, 0xdc, 0x18);
	bt856_write(client, 0xda, 0);
	bt856_write(client, 0xde, 0);

	bt856_setbit(client, 0xdc, 3, 1);
	//bt856_setbit(client, 0xdc, 6, 0);
	bt856_setbit(client, 0xdc, 4, 1);

	switch (encoder->norm) {

	case VIDEO_MODE_NTSC:
		bt856_setbit(client, 0xdc, 2, 0);
		break;

	case VIDEO_MODE_PAL:
		bt856_setbit(client, 0xdc, 2, 1);
		break;
	}

	bt856_setbit(client, 0xdc, 1, 1);
	bt856_setbit(client, 0xde, 4, 0);
	bt856_setbit(client, 0xde, 3, 1);

	if (debug != 0)
		bt856_dump(client);

	dprintk(1, KERN_INFO "%s_attach: at address 0x%x\n", I2C_NAME(client),
		client->addr << 1);

	return 0;
}

static int
bt856_attach_adapter (struct i2c_adapter *adapter)
{
	dprintk(1,
		KERN_INFO
		"bt856.c: starting probe for adapter %s (0x%x)\n",
		I2C_NAME(adapter), adapter->id);
	return i2c_probe(adapter, &addr_data, &bt856_detect_client);
}

static int
bt856_detach_client (struct i2c_client *client)
{
	struct bt856 *encoder = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(client);
	if (err) {
		return err;
	}

	kfree(encoder);
	kfree(client);

	return 0;
}

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

static struct i2c_driver i2c_driver_bt856 = {
	.driver = {
		.name = "bt856",
	},

	.id = I2C_DRIVERID_BT856,

	.attach_adapter = bt856_attach_adapter,
	.detach_client = bt856_detach_client,
	.command = bt856_command,
};

static int __init
bt856_init (void)
{
	return i2c_add_driver(&i2c_driver_bt856);
}

static void __exit
bt856_exit (void)
{
	i2c_del_driver(&i2c_driver_bt856);
}

module_init(bt856_init);
module_exit(bt856_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* bt856 - BT856A Digital Video Encoder (Rockwell Part)
	3	*
	4	* Copyright (C) 1999 Mike Bernson <mike@mlb.org>
	5	* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
	6	*
	7	* Modifications for LML33/DC10plus unified driver
	8	* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
	9	*
	10	* This code was modify/ported from the saa7111 driver written
	11	* by Dave Perks.
	12	*
	13	* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
	14	* - moved over to linux>=2.4.x i2c protocol (9/9/2002)
	15	*
	16	* This program is free software; you can redistribute it and/or modify
	17	* it under the terms of the GNU General Public License as published by
	18	* the Free Software Foundation; either version 2 of the License, or
	19	* (at your option) any later version.
	20	*
	21	* This program is distributed in the hope that it will be useful,
	22	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	23	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	24	* GNU General Public License for more details.
	25	*
	26	* You should have received a copy of the GNU General Public License
	27	* along with this program; if not, write to the Free Software
	28	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	29	*/
	30
	31	#include <linux/module.h>
	32	#include <linux/init.h>
	33	#include <linux/delay.h>
	34	#include <linux/errno.h>
	35	#include <linux/fs.h>
	36	#include <linux/kernel.h>
	37	#include <linux/major.h>
	38	#include <linux/slab.h>
	39	#include <linux/mm.h>
	40	#include <linux/pci.h>
	41	#include <linux/signal.h>
	42	#include <asm/io.h>
	43	#include <asm/pgtable.h>
	44	#include <asm/page.h>
	45	#include <linux/sched.h>
1da177e4 LT	46	#include <linux/types.h>
	47
	48	#include <linux/videodev.h>
	49	#include <asm/uaccess.h>
	50
	51	MODULE_DESCRIPTION("Brooktree-856A video encoder driver");
	52	MODULE_AUTHOR("Mike Bernson & Dave Perks");
	53	MODULE_LICENSE("GPL");
	54
	55	#include <linux/i2c.h>
	56	#include <linux/i2c-dev.h>
	57
	58	#define I2C_NAME(s) (s)->name
	59
	60	#include <linux/video_encoder.h>
	61
	62	static int debug = 0;
	63	module_param(debug, int, 0);
	64	MODULE_PARM_DESC(debug, "Debug level (0-1)");
	65
	66	#define dprintk(num, format, args...) \
	67	do { \
	68	if (debug >= num) \
	69	printk(format, ##args); \
	70	} while (0)
	71
	72	/* ----------------------------------------------------------------------- */
	73
	74	#define REG_OFFSET 0xCE
	75
	76	struct bt856 {
	77	unsigned char reg[32];
	78
	79	int norm;
	80	int enable;
	81	int bright;
	82	int contrast;
	83	int hue;
	84	int sat;
	85	};
	86
	87	#define I2C_BT856 0x88
	88
	89	/* ----------------------------------------------------------------------- */
	90
	91	static inline int
	92	bt856_write (struct i2c_client *client,
	93	u8 reg,
	94	u8 value)
	95	{
	96	struct bt856 *encoder = i2c_get_clientdata(client);
	97
	98	encoder->reg[reg - REG_OFFSET] = value;
	99	return i2c_smbus_write_byte_data(client, reg, value);
	100	}
	101
	102	static inline int
	103	bt856_setbit (struct i2c_client *client,
	104	u8 reg,
	105	u8 bit,
	106	u8 value)
	107	{
	108	struct bt856 *encoder = i2c_get_clientdata(client);
	109
110	return bt856_write(client, reg,
111	(encoder->
112	reg[reg - REG_OFFSET] & ~(1 << bit)) \|
113	(value ? (1 << bit) : 0));
114	}
115
116	static void
117	bt856_dump (struct i2c_client *client)
118	{
119	int i;
120	struct bt856 *encoder = i2c_get_clientdata(client);
121
122	printk(KERN_INFO "%s: register dump:", I2C_NAME(client));
123	for (i = 0xd6; i <= 0xde; i += 2)
124	printk(" %02x", encoder->reg[i - REG_OFFSET]);
125	printk("\n");
126	}
127
128	/* ----------------------------------------------------------------------- */
129
130	static int
131	bt856_command (struct i2c_client *client,
132	unsigned int cmd,
133	void *arg)
134	{
135	struct bt856 *encoder = i2c_get_clientdata(client);
136
137	switch (cmd) {
138
139	case 0:
140	/* This is just for testing!!! */
141	dprintk(1, KERN_INFO "bt856: init\n");
142	bt856_write(client, 0xdc, 0x18);
143	bt856_write(client, 0xda, 0);
144	bt856_write(client, 0xde, 0);
145
146	bt856_setbit(client, 0xdc, 3, 1);
147	//bt856_setbit(client, 0xdc, 6, 0);
148	bt856_setbit(client, 0xdc, 4, 1);
149
150	switch (encoder->norm) {
151
152	case VIDEO_MODE_NTSC:
153	bt856_setbit(client, 0xdc, 2, 0);
154	break;
155
156	case VIDEO_MODE_PAL:
157	bt856_setbit(client, 0xdc, 2, 1);
158	break;
159	}
160
161	bt856_setbit(client, 0xdc, 1, 1);
162	bt856_setbit(client, 0xde, 4, 0);
163	bt856_setbit(client, 0xde, 3, 1);
164	if (debug != 0)
165	bt856_dump(client);
166	break;
167
168	case ENCODER_GET_CAPABILITIES:
169	{
170	struct video_encoder_capability *cap = arg;
171
172	dprintk(1, KERN_INFO "%s: get capabilities\n",
173	I2C_NAME(client));
174
175	cap->flags = VIDEO_ENCODER_PAL \|
176	VIDEO_ENCODER_NTSC \|
177	VIDEO_ENCODER_CCIR;
178	cap->inputs = 2;
179	cap->outputs = 1;
180	}
181	break;
182
183	case ENCODER_SET_NORM:
184	{
185	int *iarg = arg;
186
187	dprintk(1, KERN_INFO "%s: set norm %d\n", I2C_NAME(client),
188	*iarg);
189
190	switch (*iarg) {
191
192	case VIDEO_MODE_NTSC:
193	bt856_setbit(client, 0xdc, 2, 0);
194	break;
195
196	case VIDEO_MODE_PAL:
197	bt856_setbit(client, 0xdc, 2, 1);
198	bt856_setbit(client, 0xda, 0, 0);
199	//bt856_setbit(client, 0xda, 0, 1);
200	break;
201
202	default:
203	return -EINVAL;
204
205	}
206	encoder->norm = *iarg;
207	if (debug != 0)
208	bt856_dump(client);
209	}
210	break;
211
212	case ENCODER_SET_INPUT:
213	{
214	int *iarg = arg;
215
216	dprintk(1, KERN_INFO "%s: set input %d\n", I2C_NAME(client),
217	*iarg);
218
219	/* We only have video bus.
220	* iarg = 0: input is from bt819
221	* iarg = 1: input is from ZR36060 */
222
223	switch (*iarg) {
224
225	case 0:
226	bt856_setbit(client, 0xde, 4, 0);
227	bt856_setbit(client, 0xde, 3, 1);
228	bt856_setbit(client, 0xdc, 3, 1);
229	bt856_setbit(client, 0xdc, 6, 0);
230	break;
231	case 1:
232	bt856_setbit(client, 0xde, 4, 0);
233	bt856_setbit(client, 0xde, 3, 1);
234	bt856_setbit(client, 0xdc, 3, 1);
235	bt856_setbit(client, 0xdc, 6, 1);
236	break;
237	case 2: // Color bar
238	bt856_setbit(client, 0xdc, 3, 0);
239	bt856_setbit(client, 0xde, 4, 1);
240	break;
241	default:
242	return -EINVAL;
243
244	}
245
246	if (debug != 0)
247	bt856_dump(client);
248	}
249	break;
250
251	case ENCODER_SET_OUTPUT:
252	{
253	int *iarg = arg;
254
255	dprintk(1, KERN_INFO "%s: set output %d\n", I2C_NAME(client),
256	*iarg);
257
258	/* not much choice of outputs */
259	if (*iarg != 0) {
260	return -EINVAL;
261	}
262	}
263	break;
264
265	case ENCODER_ENABLE_OUTPUT:
266	{
267	int *iarg = arg;
268
269	encoder->enable = !!*iarg;
270
271	dprintk(1, KERN_INFO "%s: enable output %d\n",
272	I2C_NAME(client), encoder->enable);
273	}
274	break;
275
276	default:
277	return -EINVAL;
278	}
279
280	return 0;
281	}
282
283	/* ----------------------------------------------------------------------- */
284
285	/*
286	* Generic i2c probe
287	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
288	*/
289	static unsigned short normal_i2c[] = { I2C_BT856 >> 1, I2C_CLIENT_END };
1da177e4	290
68cc9d0b	291	static unsigned short ignore = I2C_CLIENT_END;
1da177e4 LT	292
	293	static struct i2c_client_address_data addr_data = {
	294	.normal_i2c = normal_i2c,
68cc9d0b JD	295	.probe = &ignore,
68cc9d0b JD	296	.ignore = &ignore,
1da177e4 LT	297	};
	298
	299	static struct i2c_driver i2c_driver_bt856;
	300
	301	static int
	302	bt856_detect_client (struct i2c_adapter *adapter,
	303	int address,
	304	int kind)
	305	{
	306	int i;
	307	struct i2c_client *client;
	308	struct bt856 *encoder;
	309
	310	dprintk(1,
	311	KERN_INFO
	312	"bt856.c: detecting bt856 client on address 0x%x\n",
	313	address << 1);
	314
	315	/* Check if the adapter supports the needed features */
	316	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	317	return 0;
	318
7408187d	319	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
1da177e4 LT	320	if (client == 0)
1da177e4 LT	321	return -ENOMEM;
1da177e4 LT	322	client->addr = address;
	323	client->adapter = adapter;
	324	client->driver = &i2c_driver_bt856;
1da177e4 LT	325	strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client)));
1da177e4 LT	326
7408187d	327	encoder = kzalloc(sizeof(struct bt856), GFP_KERNEL);
1da177e4 LT	328	if (encoder == NULL) {
	329	kfree(client);
	330	return -ENOMEM;
	331	}
1da177e4 LT	332	encoder->norm = VIDEO_MODE_NTSC;
	333	encoder->enable = 1;
	334	i2c_set_clientdata(client, encoder);
	335
	336	i = i2c_attach_client(client);
	337	if (i) {
	338	kfree(client);
	339	kfree(encoder);
	340	return i;
	341	}
	342
	343	bt856_write(client, 0xdc, 0x18);
	344	bt856_write(client, 0xda, 0);
	345	bt856_write(client, 0xde, 0);
	346
	347	bt856_setbit(client, 0xdc, 3, 1);
	348	//bt856_setbit(client, 0xdc, 6, 0);
	349	bt856_setbit(client, 0xdc, 4, 1);
	350
	351	switch (encoder->norm) {
	352
	353	case VIDEO_MODE_NTSC:
	354	bt856_setbit(client, 0xdc, 2, 0);
	355	break;
	356
	357	case VIDEO_MODE_PAL:
	358	bt856_setbit(client, 0xdc, 2, 1);
	359	break;
	360	}
	361
	362	bt856_setbit(client, 0xdc, 1, 1);
	363	bt856_setbit(client, 0xde, 4, 0);
	364	bt856_setbit(client, 0xde, 3, 1);
	365
	366	if (debug != 0)
	367	bt856_dump(client);
	368
	369	dprintk(1, KERN_INFO "%s_attach: at address 0x%x\n", I2C_NAME(client),
	370	client->addr << 1);
	371
	372	return 0;
	373	}
	374
	375	static int
	376	bt856_attach_adapter (struct i2c_adapter *adapter)
	377	{
	378	dprintk(1,
	379	KERN_INFO
	380	"bt856.c: starting probe for adapter %s (0x%x)\n",
	381	I2C_NAME(adapter), adapter->id);
	382	return i2c_probe(adapter, &addr_data, &bt856_detect_client);
	383	}
	384
	385	static int
	386	bt856_detach_client (struct i2c_client *client)
	387	{
	388	struct bt856 *encoder = i2c_get_clientdata(client);
	389	int err;
	390
	391	err = i2c_detach_client(client);
	392	if (err) {
	393	return err;
	394	}
	395
396	kfree(encoder);
397	kfree(client);
398
399	return 0;
400	}
401
402	/* ----------------------------------------------------------------------- */
403
404	static struct i2c_driver i2c_driver_bt856 = {
604f28e2	405	.driver = {
604f28e2 LR	406	.name = "bt856",
604f28e2 LR	407	},
1da177e4 LT	408
1da177e4 LT	409	.id = I2C_DRIVERID_BT856,
1da177e4 LT	410
	411	.attach_adapter = bt856_attach_adapter,
	412	.detach_client = bt856_detach_client,
	413	.command = bt856_command,
	414	};
	415
	416	static int __init
	417	bt856_init (void)
	418	{
	419	return i2c_add_driver(&i2c_driver_bt856);
	420	}
	421
	422	static void __exit
	423	bt856_exit (void)
	424	{
	425	i2c_del_driver(&i2c_driver_bt856);
	426	}
	427
	428	module_init(bt856_init);
	429	module_exit(bt856_exit);