[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / adv7180.c

/*
 * adv7180.c Analog Devices ADV7180 video decoder driver
 * Copyright (c) 2009 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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/errno.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <media/v4l2-ioctl.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>

#define DRIVER_NAME "adv7180"

#define ADV7180_INPUT_CONTROL_REG			0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM	0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM	0x20
#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM	0x30
#define ADV7180_INPUT_CONTROL_NTSC_J			0x40
#define ADV7180_INPUT_CONTROL_NTSC_M			0x50
#define ADV7180_INPUT_CONTROL_PAL60			0x60
#define ADV7180_INPUT_CONTROL_NTSC_443			0x70
#define ADV7180_INPUT_CONTROL_PAL_BG			0x80
#define ADV7180_INPUT_CONTROL_PAL_N			0x90
#define ADV7180_INPUT_CONTROL_PAL_M			0xa0
#define ADV7180_INPUT_CONTROL_PAL_M_PED			0xb0
#define ADV7180_INPUT_CONTROL_PAL_COMB_N		0xc0
#define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED		0xd0
#define ADV7180_INPUT_CONTROL_PAL_SECAM			0xe0
#define ADV7180_INPUT_CONTROL_PAL_SECAM_PED		0xf0

#define ADV7180_AUTODETECT_ENABLE_REG	0x07
#define ADV7180_AUTODETECT_DEFAULT	0x7f


#define ADV7180_STATUS1_REG				0x10
#define ADV7180_STATUS1_IN_LOCK		0x01
#define ADV7180_STATUS1_AUTOD_MASK	0x70
#define ADV7180_STATUS1_AUTOD_NTSM_M_J	0x00
#define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
#define ADV7180_STATUS1_AUTOD_PAL_M	0x20
#define ADV7180_STATUS1_AUTOD_PAL_60	0x30
#define ADV7180_STATUS1_AUTOD_PAL_B_G	0x40
#define ADV7180_STATUS1_AUTOD_SECAM	0x50
#define ADV7180_STATUS1_AUTOD_PAL_COMB	0x60
#define ADV7180_STATUS1_AUTOD_SECAM_525	0x70

#define ADV7180_IDENT_REG 0x11
#define ADV7180_ID_7180 0x18


struct adv7180_state {
	struct v4l2_subdev	sd;
	v4l2_std_id		curr_norm;
	bool			autodetect;
};

static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
{
	switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
	case ADV7180_STATUS1_AUTOD_NTSM_M_J:
		return V4L2_STD_NTSC;
	case ADV7180_STATUS1_AUTOD_NTSC_4_43:
		return V4L2_STD_NTSC_443;
	case ADV7180_STATUS1_AUTOD_PAL_M:
		return V4L2_STD_PAL_M;
	case ADV7180_STATUS1_AUTOD_PAL_60:
		return V4L2_STD_PAL_60;
	case ADV7180_STATUS1_AUTOD_PAL_B_G:
		return V4L2_STD_PAL;
	case ADV7180_STATUS1_AUTOD_SECAM:
		return V4L2_STD_SECAM;
	case ADV7180_STATUS1_AUTOD_PAL_COMB:
		return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
	case ADV7180_STATUS1_AUTOD_SECAM_525:
		return V4L2_STD_SECAM;
	default:
		return V4L2_STD_UNKNOWN;
	}
}

static int v4l2_std_to_adv7180(v4l2_std_id std)
{
	if (std == V4L2_STD_PAL_60)
		return ADV7180_INPUT_CONTROL_PAL60;
	if (std == V4L2_STD_NTSC_443)
		return ADV7180_INPUT_CONTROL_NTSC_443;
	if (std == V4L2_STD_PAL_N)
		return ADV7180_INPUT_CONTROL_PAL_N;
	if (std == V4L2_STD_PAL_M)
		return ADV7180_INPUT_CONTROL_PAL_M;
	if (std == V4L2_STD_PAL_Nc)
		return ADV7180_INPUT_CONTROL_PAL_COMB_N;

	if (std & V4L2_STD_PAL)
		return ADV7180_INPUT_CONTROL_PAL_BG;
	if (std & V4L2_STD_NTSC)
		return ADV7180_INPUT_CONTROL_NTSC_M;
	if (std & V4L2_STD_SECAM)
		return ADV7180_INPUT_CONTROL_PAL_SECAM;

	return -EINVAL;
}

static u32 adv7180_status_to_v4l2(u8 status1)
{
	if (!(status1 & ADV7180_STATUS1_IN_LOCK))
		return V4L2_IN_ST_NO_SIGNAL;

	return 0;
}

static int __adv7180_status(struct i2c_client *client, u32 *status,
	v4l2_std_id *std)
{
	int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);

	if (status1 < 0)
		return status1;

	if (status)
		*status = adv7180_status_to_v4l2(status1);
	if (std)
		*std = adv7180_std_to_v4l2(status1);

	return 0;
}

static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct adv7180_state, sd);
}

static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
	struct adv7180_state *state = to_state(sd);
	int err = 0;

	if (!state->autodetect)
		*std = state->curr_norm;
	else
		err = __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);

	return err;
}

static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
	return __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
}

static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
	struct v4l2_dbg_chip_ident *chip)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0);
}

static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
	struct adv7180_state *state = to_state(sd);
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	int ret;

	/* all standards -> autodetect */
	if (std == V4L2_STD_ALL) {
		ret = i2c_smbus_write_byte_data(client,
			ADV7180_INPUT_CONTROL_REG,
			ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
		if (ret < 0)
			goto out;

		state->autodetect = true;
	} else {
		ret = v4l2_std_to_adv7180(std);
		if (ret < 0)
			goto out;

		ret = i2c_smbus_write_byte_data(client,
			ADV7180_INPUT_CONTROL_REG, ret);
		if (ret < 0)
			goto out;

		state->curr_norm = std;
		state->autodetect = false;
	}
	ret = 0;
out:
	return ret;
}

static const struct v4l2_subdev_video_ops adv7180_video_ops = {
	.querystd = adv7180_querystd,
	.g_input_status = adv7180_g_input_status,
};

static const struct v4l2_subdev_core_ops adv7180_core_ops = {
	.g_chip_ident = adv7180_g_chip_ident,
	.s_std = adv7180_s_std,
};

static const struct v4l2_subdev_ops adv7180_ops = {
	.core = &adv7180_core_ops,
	.video = &adv7180_video_ops,
};

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */

static int adv7180_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	struct adv7180_state *state;
	struct v4l2_subdev *sd;
	int ret;

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;

	v4l_info(client, "chip found @ 0x%02x (%s)\n",
			client->addr << 1, client->adapter->name);

	state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;
	state->autodetect = true;
	sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &adv7180_ops);

	/* Initialize adv7180 */
	/* enable autodetection */
	ret = i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
		ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
	if (ret > 0)
		ret = i2c_smbus_write_byte_data(client,
			ADV7180_AUTODETECT_ENABLE_REG,
			ADV7180_AUTODETECT_DEFAULT);
	if (ret < 0) {
		printk(KERN_ERR DRIVER_NAME
			": Failed to communicate to chip: %d\n", ret);
		return ret;
	}

	return 0;
}

static int adv7180_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	v4l2_device_unregister_subdev(sd);
	kfree(to_state(sd));
	return 0;
}

static const struct i2c_device_id adv7180_id[] = {
	{DRIVER_NAME, 0},
	{},
};

MODULE_DEVICE_TABLE(i2c, adv7180_id);

static struct i2c_driver adv7180_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= DRIVER_NAME,
	},
	.probe		= adv7180_probe,
	.remove		= adv7180_remove,
	.id_table	= adv7180_id,
};

static __init int adv7180_init(void)
{
	return i2c_add_driver(&adv7180_driver);
}

static __exit void adv7180_exit(void)
{
	i2c_del_driver(&adv7180_driver);
}

module_init(adv7180_init);
module_exit(adv7180_exit);

MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
MODULE_AUTHOR("Mocean Laboratories");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
6789cb52 RR	1	/*
	2	* adv7180.c Analog Devices ADV7180 video decoder driver
	3	* Copyright (c) 2009 Intel Corporation
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/init.h>
	21	#include <linux/errno.h>
	22	#include <linux/kernel.h>
	23	#include <linux/interrupt.h>
	24	#include <linux/i2c.h>
	25	#include <linux/i2c-id.h>
	26	#include <media/v4l2-ioctl.h>
	27	#include <linux/videodev2.h>
	28	#include <media/v4l2-device.h>
	29	#include <media/v4l2-chip-ident.h>
	30
	31	#define DRIVER_NAME "adv7180"
	32
d3124294 RR	33	#define ADV7180_INPUT_CONTROL_REG 0x00
	34	#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00
	35	#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
	36	#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM 0x20
	37	#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM 0x30
	38	#define ADV7180_INPUT_CONTROL_NTSC_J 0x40
	39	#define ADV7180_INPUT_CONTROL_NTSC_M 0x50
	40	#define ADV7180_INPUT_CONTROL_PAL60 0x60
	41	#define ADV7180_INPUT_CONTROL_NTSC_443 0x70
	42	#define ADV7180_INPUT_CONTROL_PAL_BG 0x80
	43	#define ADV7180_INPUT_CONTROL_PAL_N 0x90
	44	#define ADV7180_INPUT_CONTROL_PAL_M 0xa0
	45	#define ADV7180_INPUT_CONTROL_PAL_M_PED 0xb0
	46	#define ADV7180_INPUT_CONTROL_PAL_COMB_N 0xc0
	47	#define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED 0xd0
	48	#define ADV7180_INPUT_CONTROL_PAL_SECAM 0xe0
	49	#define ADV7180_INPUT_CONTROL_PAL_SECAM_PED 0xf0
	50
6789cb52 RR	51	#define ADV7180_AUTODETECT_ENABLE_REG 0x07
	52	#define ADV7180_AUTODETECT_DEFAULT 0x7f
	53
	54
d3124294 RR	55	#define ADV7180_STATUS1_REG 0x10
	56	#define ADV7180_STATUS1_IN_LOCK 0x01
	57	#define ADV7180_STATUS1_AUTOD_MASK 0x70
6789cb52 RR	58	#define ADV7180_STATUS1_AUTOD_NTSM_M_J 0x00
	59	#define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
	60	#define ADV7180_STATUS1_AUTOD_PAL_M 0x20
	61	#define ADV7180_STATUS1_AUTOD_PAL_60 0x30
	62	#define ADV7180_STATUS1_AUTOD_PAL_B_G 0x40
	63	#define ADV7180_STATUS1_AUTOD_SECAM 0x50
	64	#define ADV7180_STATUS1_AUTOD_PAL_COMB 0x60
	65	#define ADV7180_STATUS1_AUTOD_SECAM_525 0x70
	66
	67	#define ADV7180_IDENT_REG 0x11
	68	#define ADV7180_ID_7180 0x18
	69
	70
	71	struct adv7180_state {
c277b60a RR	72	struct v4l2_subdev sd;
	73	v4l2_std_id curr_norm;
	74	bool autodetect;
6789cb52 RR	75	};
6789cb52 RR	76
d3124294	77	static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
6789cb52	78	{
6789cb52 RR	79	switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
6789cb52 RR	80	case ADV7180_STATUS1_AUTOD_NTSM_M_J:
d3124294	81	return V4L2_STD_NTSC;
6789cb52 RR	82	case ADV7180_STATUS1_AUTOD_NTSC_4_43:
	83	return V4L2_STD_NTSC_443;
	84	case ADV7180_STATUS1_AUTOD_PAL_M:
	85	return V4L2_STD_PAL_M;
	86	case ADV7180_STATUS1_AUTOD_PAL_60:
	87	return V4L2_STD_PAL_60;
	88	case ADV7180_STATUS1_AUTOD_PAL_B_G:
	89	return V4L2_STD_PAL;
	90	case ADV7180_STATUS1_AUTOD_SECAM:
	91	return V4L2_STD_SECAM;
	92	case ADV7180_STATUS1_AUTOD_PAL_COMB:
	93	return V4L2_STD_PAL_Nc \| V4L2_STD_PAL_N;
	94	case ADV7180_STATUS1_AUTOD_SECAM_525:
	95	return V4L2_STD_SECAM;
	96	default:
	97	return V4L2_STD_UNKNOWN;
	98	}
	99	}
	100
c277b60a RR	101	static int v4l2_std_to_adv7180(v4l2_std_id std)
	102	{
	103	if (std == V4L2_STD_PAL_60)
	104	return ADV7180_INPUT_CONTROL_PAL60;
	105	if (std == V4L2_STD_NTSC_443)
	106	return ADV7180_INPUT_CONTROL_NTSC_443;
	107	if (std == V4L2_STD_PAL_N)
	108	return ADV7180_INPUT_CONTROL_PAL_N;
	109	if (std == V4L2_STD_PAL_M)
	110	return ADV7180_INPUT_CONTROL_PAL_M;
	111	if (std == V4L2_STD_PAL_Nc)
	112	return ADV7180_INPUT_CONTROL_PAL_COMB_N;
	113
	114	if (std & V4L2_STD_PAL)
	115	return ADV7180_INPUT_CONTROL_PAL_BG;
	116	if (std & V4L2_STD_NTSC)
	117	return ADV7180_INPUT_CONTROL_NTSC_M;
	118	if (std & V4L2_STD_SECAM)
	119	return ADV7180_INPUT_CONTROL_PAL_SECAM;
	120
	121	return -EINVAL;
	122	}
	123
d3124294 RR	124	static u32 adv7180_status_to_v4l2(u8 status1)
	125	{
	126	if (!(status1 & ADV7180_STATUS1_IN_LOCK))
	127	return V4L2_IN_ST_NO_SIGNAL;
	128
	129	return 0;
	130	}
	131
	132	static int __adv7180_status(struct i2c_client client, u32 status,
	133	v4l2_std_id *std)
	134	{
	135	int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);
	136
	137	if (status1 < 0)
	138	return status1;
	139
	140	if (status)
	141	*status = adv7180_status_to_v4l2(status1);
	142	if (std)
	143	*std = adv7180_std_to_v4l2(status1);
	144
	145	return 0;
	146	}
	147
6789cb52 RR	148	static inline struct adv7180_state to_state(struct v4l2_subdev sd)
	149	{
	150	return container_of(sd, struct adv7180_state, sd);
	151	}
	152
	153	static int adv7180_querystd(struct v4l2_subdev sd, v4l2_std_id std)
	154	{
c277b60a RR	155	struct adv7180_state *state = to_state(sd);
	156	int err = 0;
	157
	158	if (!state->autodetect)
	159	*std = state->curr_norm;
	160	else
	161	err = __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);
	162
	163	return err;
d3124294	164	}
6789cb52	165
d3124294 RR	166	static int adv7180_g_input_status(struct v4l2_subdev sd, u32 status)
	167	{
	168	return __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
6789cb52 RR	169	}
	170
	171	static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
	172	struct v4l2_dbg_chip_ident *chip)
	173	{
	174	struct i2c_client *client = v4l2_get_subdevdata(sd);
	175
	176	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0);
	177	}
	178
c277b60a RR	179	static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
	180	{
	181	struct adv7180_state *state = to_state(sd);
	182	struct i2c_client *client = v4l2_get_subdevdata(sd);
	183	int ret;
	184
	185	/* all standards -> autodetect */
	186	if (std == V4L2_STD_ALL) {
	187	ret = i2c_smbus_write_byte_data(client,
	188	ADV7180_INPUT_CONTROL_REG,
	189	ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
	190	if (ret < 0)
	191	goto out;
	192
	193	state->autodetect = true;
	194	} else {
	195	ret = v4l2_std_to_adv7180(std);
	196	if (ret < 0)
	197	goto out;
	198
	199	ret = i2c_smbus_write_byte_data(client,
	200	ADV7180_INPUT_CONTROL_REG, ret);
	201	if (ret < 0)
	202	goto out;
	203
	204	state->curr_norm = std;
	205	state->autodetect = false;
	206	}
	207	ret = 0;
	208	out:
	209	return ret;
	210	}
	211
6789cb52 RR	212	static const struct v4l2_subdev_video_ops adv7180_video_ops = {
6789cb52 RR	213	.querystd = adv7180_querystd,
d3124294	214	.g_input_status = adv7180_g_input_status,
6789cb52 RR	215	};
	216
	217	static const struct v4l2_subdev_core_ops adv7180_core_ops = {
	218	.g_chip_ident = adv7180_g_chip_ident,
c277b60a	219	.s_std = adv7180_s_std,
6789cb52 RR	220	};
	221
	222	static const struct v4l2_subdev_ops adv7180_ops = {
	223	.core = &adv7180_core_ops,
	224	.video = &adv7180_video_ops,
	225	};
	226
	227	/*
	228	* Generic i2c probe
	229	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
	230	*/
	231
	232	static int adv7180_probe(struct i2c_client *client,
	233	const struct i2c_device_id *id)
	234	{
	235	struct adv7180_state *state;
	236	struct v4l2_subdev *sd;
	237	int ret;
	238
	239	/* Check if the adapter supports the needed features */
	240	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	241	return -EIO;
	242
	243	v4l_info(client, "chip found @ 0x%02x (%s)\n",
	244	client->addr << 1, client->adapter->name);
	245
	246	state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
	247	if (state == NULL)
	248	return -ENOMEM;
c277b60a	249	state->autodetect = true;
6789cb52 RR	250	sd = &state->sd;
	251	v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
	252
	253	/* Initialize adv7180 */
	254	/* enable autodetection */
	255	ret = i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
d3124294	256	ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
6789cb52 RR	257	if (ret > 0)
	258	ret = i2c_smbus_write_byte_data(client,
	259	ADV7180_AUTODETECT_ENABLE_REG,
	260	ADV7180_AUTODETECT_DEFAULT);
	261	if (ret < 0) {
	262	printk(KERN_ERR DRIVER_NAME
	263	": Failed to communicate to chip: %d\n", ret);
	264	return ret;
	265	}
	266
	267	return 0;
	268	}
	269
	270	static int adv7180_remove(struct i2c_client *client)
	271	{
	272	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	273
	274	v4l2_device_unregister_subdev(sd);
	275	kfree(to_state(sd));
	276	return 0;
	277	}
	278
	279	static const struct i2c_device_id adv7180_id[] = {
	280	{DRIVER_NAME, 0},
	281	{},
	282	};
	283
	284	MODULE_DEVICE_TABLE(i2c, adv7180_id);
	285
	286	static struct i2c_driver adv7180_driver = {
	287	.driver = {
	288	.owner = THIS_MODULE,
	289	.name = DRIVER_NAME,
	290	},
	291	.probe = adv7180_probe,
	292	.remove = adv7180_remove,
	293	.id_table = adv7180_id,
	294	};
	295
	296	static __init int adv7180_init(void)
	297	{
	298	return i2c_add_driver(&adv7180_driver);
	299	}
	300
	301	static __exit void adv7180_exit(void)
	302	{
	303	i2c_del_driver(&adv7180_driver);
	304	}
	305
	306	module_init(adv7180_init);
	307	module_exit(adv7180_exit);
	308
	309	MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
	310	MODULE_AUTHOR("Mocean Laboratories");
	311	MODULE_LICENSE("GPL v2");
	312