[deliverable/linux.git] / drivers / media / video / ak881x.c

/*
 * Driver for AK8813 / AK8814 TV-ecoders from Asahi Kasei Microsystems Co., Ltd. (AKM)
 *
 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
 *
 * 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.
 */

#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>

#include <media/ak881x.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>

#define AK881X_INTERFACE_MODE	0
#define AK881X_VIDEO_PROCESS1	1
#define AK881X_VIDEO_PROCESS2	2
#define AK881X_VIDEO_PROCESS3	3
#define AK881X_DAC_MODE		5
#define AK881X_STATUS		0x24
#define AK881X_DEVICE_ID	0x25
#define AK881X_DEVICE_REVISION	0x26

struct ak881x {
	struct v4l2_subdev subdev;
	struct ak881x_pdata *pdata;
	unsigned int lines;
	int id;	/* DEVICE_ID code V4L2_IDENT_AK881X code from v4l2-chip-ident.h */
	char revision;	/* DEVICE_REVISION content */
};

static int reg_read(struct i2c_client *client, const u8 reg)
{
	return i2c_smbus_read_byte_data(client, reg);
}

static int reg_write(struct i2c_client *client, const u8 reg,
		     const u8 data)
{
	return i2c_smbus_write_byte_data(client, reg, data);
}

static int reg_set(struct i2c_client *client, const u8 reg,
		   const u8 data, u8 mask)
{
	int ret = reg_read(client, reg);
	if (ret < 0)
		return ret;
	return reg_write(client, reg, (ret & ~mask) | (data & mask));
}

static struct ak881x *to_ak881x(const struct i2c_client *client)
{
	return container_of(i2c_get_clientdata(client), struct ak881x, subdev);
}

static int ak881x_g_chip_ident(struct v4l2_subdev *sd,
			       struct v4l2_dbg_chip_ident *id)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct ak881x *ak881x = to_ak881x(client);

	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
		return -EINVAL;

	if (id->match.addr != client->addr)
		return -ENODEV;

	id->ident	= ak881x->id;
	id->revision	= ak881x->revision;

	return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ak881x_g_register(struct v4l2_subdev *sd,
			     struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x26)
		return -EINVAL;

	if (reg->match.addr != client->addr)
		return -ENODEV;

	reg->val = reg_read(client, reg->reg);

	if (reg->val > 0xffff)
		return -EIO;

	return 0;
}

static int ak881x_s_register(struct v4l2_subdev *sd,
			     struct v4l2_dbg_register *reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x26)
		return -EINVAL;

	if (reg->match.addr != client->addr)
		return -ENODEV;

	if (reg_write(client, reg->reg, reg->val) < 0)
		return -EIO;

	return 0;
}
#endif

static int ak881x_try_g_mbus_fmt(struct v4l2_subdev *sd,
				 struct v4l2_mbus_framefmt *mf)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct ak881x *ak881x = to_ak881x(client);

	v4l_bound_align_image(&mf->width, 0, 720, 2,
			      &mf->height, 0, ak881x->lines, 1, 0);
	mf->field	= V4L2_FIELD_INTERLACED;
	mf->code	= V4L2_MBUS_FMT_YUYV8_2X8_LE;
	mf->colorspace	= V4L2_COLORSPACE_SMPTE170M;

	return 0;
}

static int ak881x_s_mbus_fmt(struct v4l2_subdev *sd,
			     struct v4l2_mbus_framefmt *mf)
{
	if (mf->field != V4L2_FIELD_INTERLACED ||
	    mf->code != V4L2_MBUS_FMT_YUYV8_2X8_LE)
		return -EINVAL;

	return ak881x_try_g_mbus_fmt(sd, mf);
}

static int ak881x_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
				enum v4l2_mbus_pixelcode *code)
{
	if (index)
		return -EINVAL;

	*code = V4L2_MBUS_FMT_YUYV8_2X8_LE;
	return 0;
}

static int ak881x_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct ak881x *ak881x = to_ak881x(client);

	a->bounds.left			= 0;
	a->bounds.top			= 0;
	a->bounds.width			= 720;
	a->bounds.height		= ak881x->lines;
	a->defrect			= a->bounds;
	a->type				= V4L2_BUF_TYPE_VIDEO_OUTPUT;
	a->pixelaspect.numerator	= 1;
	a->pixelaspect.denominator	= 1;

	return 0;
}

static int ak881x_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct ak881x *ak881x = to_ak881x(client);
	u8 vp1;

	if (std == V4L2_STD_NTSC_443) {
		vp1 = 3;
		ak881x->lines = 480;
	} else if (std == V4L2_STD_PAL_M) {
		vp1 = 5;
		ak881x->lines = 480;
	} else if (std == V4L2_STD_PAL_60) {
		vp1 = 7;
		ak881x->lines = 480;
	} else if (std && !(std & ~V4L2_STD_PAL)) {
		vp1 = 0xf;
		ak881x->lines = 576;
	} else if (std && !(std & ~V4L2_STD_NTSC)) {
		vp1 = 0;
		ak881x->lines = 480;
	} else {
		/* No SECAM or PAL_N/Nc supported */
		return -EINVAL;
	}

	reg_set(client, AK881X_VIDEO_PROCESS1, vp1, 0xf);

	return 0;
}

static int ak881x_s_stream(struct v4l2_subdev *sd, int enable)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	struct ak881x *ak881x = to_ak881x(client);

	if (enable) {
		u8 dac;
		/* For colour-bar testing set bit 6 of AK881X_VIDEO_PROCESS1 */
		/* Default: composite output */
		if (ak881x->pdata->flags & AK881X_COMPONENT)
			dac = 3;
		else
			dac = 4;
		/* Turn on the DAC(s) */
		reg_write(client, AK881X_DAC_MODE, dac);
		dev_dbg(&client->dev, "chip status 0x%x\n",
			reg_read(client, AK881X_STATUS));
	} else {
		/* ...and clear bit 6 of AK881X_VIDEO_PROCESS1 here */
		reg_write(client, AK881X_DAC_MODE, 0);
		dev_dbg(&client->dev, "chip status 0x%x\n",
			reg_read(client, AK881X_STATUS));
	}

	return 0;
}

static struct v4l2_subdev_core_ops ak881x_subdev_core_ops = {
	.g_chip_ident	= ak881x_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.g_register	= ak881x_g_register,
	.s_register	= ak881x_s_register,
#endif
};

static struct v4l2_subdev_video_ops ak881x_subdev_video_ops = {
	.s_mbus_fmt	= ak881x_s_mbus_fmt,
	.g_mbus_fmt	= ak881x_try_g_mbus_fmt,
	.try_mbus_fmt	= ak881x_try_g_mbus_fmt,
	.cropcap	= ak881x_cropcap,
	.enum_mbus_fmt	= ak881x_enum_mbus_fmt,
	.s_std_output	= ak881x_s_std_output,
	.s_stream	= ak881x_s_stream,
};

static struct v4l2_subdev_ops ak881x_subdev_ops = {
	.core	= &ak881x_subdev_core_ops,
	.video	= &ak881x_subdev_video_ops,
};

static int ak881x_probe(struct i2c_client *client,
			const struct i2c_device_id *did)
{
	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
	struct ak881x *ak881x;
	u8 ifmode, data;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
		dev_warn(&adapter->dev,
			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
		return -EIO;
	}

	ak881x = kzalloc(sizeof(struct ak881x), GFP_KERNEL);
	if (!ak881x)
		return -ENOMEM;

	v4l2_i2c_subdev_init(&ak881x->subdev, client, &ak881x_subdev_ops);

	data = reg_read(client, AK881X_DEVICE_ID);

	switch (data) {
	case 0x13:
		ak881x->id = V4L2_IDENT_AK8813;
		break;
	case 0x14:
		ak881x->id = V4L2_IDENT_AK8814;
		break;
	default:
		dev_err(&client->dev,
			"No ak881x chip detected, register read %x\n", data);
		kfree(ak881x);
		return -ENODEV;
	}

	ak881x->revision = reg_read(client, AK881X_DEVICE_REVISION);
	ak881x->pdata = client->dev.platform_data;

	if (ak881x->pdata) {
		if (ak881x->pdata->flags & AK881X_FIELD)
			ifmode = 4;
		else
			ifmode = 0;

		switch (ak881x->pdata->flags & AK881X_IF_MODE_MASK) {
		case AK881X_IF_MODE_BT656:
			ifmode |= 1;
			break;
		case AK881X_IF_MODE_MASTER:
			ifmode |= 2;
			break;
		case AK881X_IF_MODE_SLAVE:
		default:
			break;
		}

		dev_dbg(&client->dev, "IF mode %x\n", ifmode);

		/*
		 * "Line Blanking No." seems to be the same as the number of
		 * "black" lines on, e.g., SuperH VOU, whose default value of 20
		 * "incidentally" matches ak881x' default
		 */
		reg_write(client, AK881X_INTERFACE_MODE, ifmode | (20 << 3));
	}

	/* Hardware default: NTSC-M */
	ak881x->lines = 480;

	dev_info(&client->dev, "Detected an ak881x chip ID %x, revision %x\n",
		 data, ak881x->revision);

	return 0;
}

static int ak881x_remove(struct i2c_client *client)
{
	struct ak881x *ak881x = to_ak881x(client);

	v4l2_device_unregister_subdev(&ak881x->subdev);
	kfree(ak881x);

	return 0;
}

static const struct i2c_device_id ak881x_id[] = {
	{ "ak8813", 0 },
	{ "ak8814", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ak881x_id);

static struct i2c_driver ak881x_i2c_driver = {
	.driver = {
		.name = "ak881x",
	},
	.probe		= ak881x_probe,
	.remove		= ak881x_remove,
	.id_table	= ak881x_id,
};

static int __init ak881x_module_init(void)
{
	return i2c_add_driver(&ak881x_i2c_driver);
}

static void __exit ak881x_module_exit(void)
{
	i2c_del_driver(&ak881x_i2c_driver);
}

module_init(ak881x_module_init);
module_exit(ak881x_module_exit);

MODULE_DESCRIPTION("TV-output driver for ak8813/ak8814");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
aec11e5d GL	1	/*
	2	* Driver for AK8813 / AK8814 TV-ecoders from Asahi Kasei Microsystems Co., Ltd. (AKM)
	3	*
	4	* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/i2c.h>
	12	#include <linux/init.h>
	13	#include <linux/platform_device.h>
	14	#include <linux/videodev2.h>
	15
	16	#include <media/ak881x.h>
	17	#include <media/v4l2-chip-ident.h>
	18	#include <media/v4l2-common.h>
	19	#include <media/v4l2-device.h>
	20
	21	#define AK881X_INTERFACE_MODE 0
	22	#define AK881X_VIDEO_PROCESS1 1
	23	#define AK881X_VIDEO_PROCESS2 2
	24	#define AK881X_VIDEO_PROCESS3 3
	25	#define AK881X_DAC_MODE 5
	26	#define AK881X_STATUS 0x24
	27	#define AK881X_DEVICE_ID 0x25
	28	#define AK881X_DEVICE_REVISION 0x26
	29
	30	struct ak881x {
	31	struct v4l2_subdev subdev;
	32	struct ak881x_pdata *pdata;
	33	unsigned int lines;
	34	int id; /* DEVICE_ID code V4L2_IDENT_AK881X code from v4l2-chip-ident.h */
	35	char revision; /* DEVICE_REVISION content */
	36	};
	37
	38	static int reg_read(struct i2c_client *client, const u8 reg)
	39	{
	40	return i2c_smbus_read_byte_data(client, reg);
	41	}
	42
	43	static int reg_write(struct i2c_client *client, const u8 reg,
	44	const u8 data)
	45	{
	46	return i2c_smbus_write_byte_data(client, reg, data);
	47	}
	48
	49	static int reg_set(struct i2c_client *client, const u8 reg,
	50	const u8 data, u8 mask)
	51	{
	52	int ret = reg_read(client, reg);
	53	if (ret < 0)
	54	return ret;
	55	return reg_write(client, reg, (ret & ~mask) \| (data & mask));
	56	}
	57
	58	static struct ak881x to_ak881x(const struct i2c_client client)
	59	{
	60	return container_of(i2c_get_clientdata(client), struct ak881x, subdev);
	61	}
	62
	63	static int ak881x_g_chip_ident(struct v4l2_subdev *sd,
	64	struct v4l2_dbg_chip_ident *id)
65	{
66	struct i2c_client *client = v4l2_get_subdevdata(sd);
67	struct ak881x *ak881x = to_ak881x(client);
68
69	if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
70	return -EINVAL;
71
72	if (id->match.addr != client->addr)
73	return -ENODEV;
74
75	id->ident = ak881x->id;
76	id->revision = ak881x->revision;
77
78	return 0;
79	}
80
81	#ifdef CONFIG_VIDEO_ADV_DEBUG
82	static int ak881x_g_register(struct v4l2_subdev *sd,
83	struct v4l2_dbg_register *reg)
84	{
85	struct i2c_client *client = v4l2_get_subdevdata(sd);
86
87	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR \|\| reg->reg > 0x26)
88	return -EINVAL;
89
90	if (reg->match.addr != client->addr)
91	return -ENODEV;
92
93	reg->val = reg_read(client, reg->reg);
94
95	if (reg->val > 0xffff)
96	return -EIO;
97
98	return 0;
99	}
100
101	static int ak881x_s_register(struct v4l2_subdev *sd,
102	struct v4l2_dbg_register *reg)
103	{
104	struct i2c_client *client = v4l2_get_subdevdata(sd);
105
106	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR \|\| reg->reg > 0x26)
107	return -EINVAL;
108
109	if (reg->match.addr != client->addr)
110	return -ENODEV;
111
112	if (reg_write(client, reg->reg, reg->val) < 0)
113	return -EIO;
114
115	return 0;
116	}
117	#endif
118
119	static int ak881x_try_g_mbus_fmt(struct v4l2_subdev *sd,
120	struct v4l2_mbus_framefmt *mf)
121	{
122	struct i2c_client *client = v4l2_get_subdevdata(sd);
123	struct ak881x *ak881x = to_ak881x(client);
124
125	v4l_bound_align_image(&mf->width, 0, 720, 2,
126	&mf->height, 0, ak881x->lines, 1, 0);
127	mf->field = V4L2_FIELD_INTERLACED;
128	mf->code = V4L2_MBUS_FMT_YUYV8_2X8_LE;
129	mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
130
131	return 0;
132	}
133
134	static int ak881x_s_mbus_fmt(struct v4l2_subdev *sd,
135	struct v4l2_mbus_framefmt *mf)
136	{
137	if (mf->field != V4L2_FIELD_INTERLACED \|\|
138	mf->code != V4L2_MBUS_FMT_YUYV8_2X8_LE)
139	return -EINVAL;
140
141	return ak881x_try_g_mbus_fmt(sd, mf);
142	}
143
3805f201	144	static int ak881x_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
aec11e5d GL	145	enum v4l2_mbus_pixelcode *code)
	146	{
	147	if (index)
	148	return -EINVAL;
	149
	150	*code = V4L2_MBUS_FMT_YUYV8_2X8_LE;
	151	return 0;
	152	}
	153
	154	static int ak881x_cropcap(struct v4l2_subdev sd, struct v4l2_cropcap a)
	155	{
	156	struct i2c_client *client = v4l2_get_subdevdata(sd);
	157	struct ak881x *ak881x = to_ak881x(client);
	158
	159	a->bounds.left = 0;
	160	a->bounds.top = 0;
	161	a->bounds.width = 720;
	162	a->bounds.height = ak881x->lines;
	163	a->defrect = a->bounds;
	164	a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
	165	a->pixelaspect.numerator = 1;
	166	a->pixelaspect.denominator = 1;
	167
	168	return 0;
	169	}
	170
	171	static int ak881x_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
	172	{
	173	struct i2c_client *client = v4l2_get_subdevdata(sd);
	174	struct ak881x *ak881x = to_ak881x(client);
	175	u8 vp1;
	176
	177	if (std == V4L2_STD_NTSC_443) {
	178	vp1 = 3;
	179	ak881x->lines = 480;
	180	} else if (std == V4L2_STD_PAL_M) {
	181	vp1 = 5;
	182	ak881x->lines = 480;
	183	} else if (std == V4L2_STD_PAL_60) {
	184	vp1 = 7;
	185	ak881x->lines = 480;
	186	} else if (std && !(std & ~V4L2_STD_PAL)) {
	187	vp1 = 0xf;
	188	ak881x->lines = 576;
	189	} else if (std && !(std & ~V4L2_STD_NTSC)) {
	190	vp1 = 0;
	191	ak881x->lines = 480;
	192	} else {
	193	/* No SECAM or PAL_N/Nc supported */
	194	return -EINVAL;
	195	}
	196
	197	reg_set(client, AK881X_VIDEO_PROCESS1, vp1, 0xf);
	198
	199	return 0;
	200	}
	201
	202	static int ak881x_s_stream(struct v4l2_subdev *sd, int enable)
	203	{
	204	struct i2c_client *client = v4l2_get_subdevdata(sd);
	205	struct ak881x *ak881x = to_ak881x(client);
	206
	207	if (enable) {
	208	u8 dac;
209	/* For colour-bar testing set bit 6 of AK881X_VIDEO_PROCESS1 */
210	/* Default: composite output */
211	if (ak881x->pdata->flags & AK881X_COMPONENT)
212	dac = 3;
213	else
214	dac = 4;
215	/* Turn on the DAC(s) */
216	reg_write(client, AK881X_DAC_MODE, dac);
217	dev_dbg(&client->dev, "chip status 0x%x\n",
218	reg_read(client, AK881X_STATUS));
219	} else {
220	/* ...and clear bit 6 of AK881X_VIDEO_PROCESS1 here */
221	reg_write(client, AK881X_DAC_MODE, 0);
222	dev_dbg(&client->dev, "chip status 0x%x\n",
223	reg_read(client, AK881X_STATUS));
224	}
225
226	return 0;
227	}
228
229	static struct v4l2_subdev_core_ops ak881x_subdev_core_ops = {
230	.g_chip_ident = ak881x_g_chip_ident,
231	#ifdef CONFIG_VIDEO_ADV_DEBUG
232	.g_register = ak881x_g_register,
233	.s_register = ak881x_s_register,
234	#endif
235	};
236
237	static struct v4l2_subdev_video_ops ak881x_subdev_video_ops = {
238	.s_mbus_fmt = ak881x_s_mbus_fmt,
239	.g_mbus_fmt = ak881x_try_g_mbus_fmt,
240	.try_mbus_fmt = ak881x_try_g_mbus_fmt,
241	.cropcap = ak881x_cropcap,
242	.enum_mbus_fmt = ak881x_enum_mbus_fmt,
243	.s_std_output = ak881x_s_std_output,
244	.s_stream = ak881x_s_stream,
245	};
246
247	static struct v4l2_subdev_ops ak881x_subdev_ops = {
248	.core = &ak881x_subdev_core_ops,
249	.video = &ak881x_subdev_video_ops,
250	};
251
252	static int ak881x_probe(struct i2c_client *client,
253	const struct i2c_device_id *did)
254	{
255	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
256	struct ak881x *ak881x;
257	u8 ifmode, data;
258
259	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
260	dev_warn(&adapter->dev,
261	"I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
262	return -EIO;
263	}
264
265	ak881x = kzalloc(sizeof(struct ak881x), GFP_KERNEL);
266	if (!ak881x)
267	return -ENOMEM;
268
269	v4l2_i2c_subdev_init(&ak881x->subdev, client, &ak881x_subdev_ops);
270
271	data = reg_read(client, AK881X_DEVICE_ID);
272
273	switch (data) {
274	case 0x13:
275	ak881x->id = V4L2_IDENT_AK8813;
276	break;
277	case 0x14:
278	ak881x->id = V4L2_IDENT_AK8814;
279	break;
280	default:
281	dev_err(&client->dev,
282	"No ak881x chip detected, register read %x\n", data);
283	kfree(ak881x);
284	return -ENODEV;
285	}
286
287	ak881x->revision = reg_read(client, AK881X_DEVICE_REVISION);
288	ak881x->pdata = client->dev.platform_data;
289
290	if (ak881x->pdata) {
291	if (ak881x->pdata->flags & AK881X_FIELD)
292	ifmode = 4;
293	else
294	ifmode = 0;
295
296	switch (ak881x->pdata->flags & AK881X_IF_MODE_MASK) {
297	case AK881X_IF_MODE_BT656:
298	ifmode \|= 1;
299	break;
300	case AK881X_IF_MODE_MASTER:
301	ifmode \|= 2;
302	break;
303	case AK881X_IF_MODE_SLAVE:
304	default:
305	break;
306	}
307
308	dev_dbg(&client->dev, "IF mode %x\n", ifmode);
309
310	/*
311	* "Line Blanking No." seems to be the same as the number of
312	* "black" lines on, e.g., SuperH VOU, whose default value of 20
313	* "incidentally" matches ak881x' default
314	*/
315	reg_write(client, AK881X_INTERFACE_MODE, ifmode \| (20 << 3));
316	}
317
318	/* Hardware default: NTSC-M */
319	ak881x->lines = 480;
320
321	dev_info(&client->dev, "Detected an ak881x chip ID %x, revision %x\n",
322	data, ak881x->revision);
323
324	return 0;
325	}
326
327	static int ak881x_remove(struct i2c_client *client)
328	{
329	struct ak881x *ak881x = to_ak881x(client);
330
331	v4l2_device_unregister_subdev(&ak881x->subdev);
332	kfree(ak881x);
333
334	return 0;
335	}
336
337	static const struct i2c_device_id ak881x_id[] = {
338	{ "ak8813", 0 },
339	{ "ak8814", 0 },
340	{ }
341	};
342	MODULE_DEVICE_TABLE(i2c, ak881x_id);
343
344	static struct i2c_driver ak881x_i2c_driver = {
345	.driver = {
346	.name = "ak881x",
347	},
348	.probe = ak881x_probe,
349	.remove = ak881x_remove,
350	.id_table = ak881x_id,
351	};
352
353	static int __init ak881x_module_init(void)
354	{
355	return i2c_add_driver(&ak881x_i2c_driver);
356	}
357
358	static void __exit ak881x_module_exit(void)
359	{
360	i2c_del_driver(&ak881x_i2c_driver);
361	}
362
363	module_init(ak881x_module_init);
364	module_exit(ak881x_module_exit);
365
366	MODULE_DESCRIPTION("TV-output driver for ak8813/ak8814");
367	MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
368	MODULE_LICENSE("GPL v2");