Re: [PATCH v4] V4L2: I2C: ML86V7667 video decoder driver

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On Thu 16 May 2013 00:50:23 Sergei Shtylyov wrote:
> From: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx>
> 
> Add OKI Semiconductor ML86V7667 video decoder driver.
> 
> Signed-off-by: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx>
> [Sergei: added v4l2_device_unregister_subdev() call to the error cleanup path of
> ml86v7667_probe(); some cleanup.]
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> 
> ---
> This patch is against the 'media_tree.git' repo.
> 
> Changes since version 3:
> - set the field format depending on video standard in try_mbus_fmt() method;
> - refreshed the patch.
> 
> Changes since version 2:
> - removed now unused #include;
> - fixed querystd() method to return currently detected video standard;
> - switched from using V4L2_STD_[PAL|NTSC] to using V4L2_STD_[625_50|525_60].
> 
> Changes since the original posting:
> - fixed ACCC_CHROMA_CB_MASK;
> - got rid of the autodetection feature;
> - removed querystd() method calls from other methods;
> - removed deprecated g_chip_ident() method.
> 
>  drivers/media/i2c/Kconfig     |    9 
>  drivers/media/i2c/Makefile    |    1 
>  drivers/media/i2c/ml86v7667.c |  481 ++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 491 insertions(+)
> 
> Index: media_tree/drivers/media/i2c/Kconfig
> ===================================================================
> --- media_tree.orig/drivers/media/i2c/Kconfig
> +++ media_tree/drivers/media/i2c/Kconfig
> @@ -245,6 +245,15 @@ config VIDEO_KS0127
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called ks0127.
>  
> +config VIDEO_ML86V7667
> +	tristate "OKI ML86V7667 video decoder"
> +	depends on VIDEO_V4L2 && I2C
> +	---help---
> +	  Support for the OKI Semiconductor ML86V7667 video decoder.
> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called ml86v7667.
> +
>  config VIDEO_SAA7110
>  	tristate "Philips SAA7110 video decoder"
>  	depends on VIDEO_V4L2 && I2C
> Index: media_tree/drivers/media/i2c/Makefile
> ===================================================================
> --- media_tree.orig/drivers/media/i2c/Makefile
> +++ media_tree/drivers/media/i2c/Makefile
> @@ -70,3 +70,4 @@ obj-$(CONFIG_VIDEO_AS3645A)	+= as3645a.o
>  obj-$(CONFIG_VIDEO_SMIAPP_PLL)	+= smiapp-pll.o
>  obj-$(CONFIG_VIDEO_AK881X)		+= ak881x.o
>  obj-$(CONFIG_VIDEO_IR_I2C)  += ir-kbd-i2c.o
> +obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o
> Index: media_tree/drivers/media/i2c/ml86v7667.c
> ===================================================================
> --- /dev/null
> +++ media_tree/drivers/media/i2c/ml86v7667.c
> @@ -0,0 +1,481 @@
> +/*
> + * OKI Semiconductor ML86V7667 video decoder driver
> + *
> + * Author: Vladimir Barinov <source@xxxxxxxxxxxxxxxxxx>
> + * Copyright (C) 2013 Cogent Embedded, Inc.
> + * Copyright (C) 2013 Renesas Solutions Corp.
> + *
> + * 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.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/i2c.h>
> +#include <linux/slab.h>
> +#include <linux/videodev2.h>
> +#include <media/v4l2-subdev.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-ctrls.h>
> +
> +#define DRV_NAME "ml86v7667"
> +
> +/* Subaddresses */
> +#define MRA_REG			0x00 /* Mode Register A */
> +#define MRC_REG			0x02 /* Mode Register C */
> +#define LUMC_REG		0x0C /* Luminance Control */
> +#define CLC_REG			0x10 /* Contrast level control */
> +#define SSEPL_REG		0x11 /* Sync separation level */
> +#define CHRCA_REG		0x12 /* Chrominance Control A */
> +#define ACCC_REG		0x14 /* ACC Loop filter & Chrominance control */
> +#define ACCRC_REG		0x15 /* ACC Reference level control */
> +#define HUE_REG			0x16 /* Hue control */
> +#define ADC2_REG		0x1F /* ADC Register 2 */
> +#define PLLR1_REG		0x20 /* PLL Register 1 */
> +#define STATUS_REG		0x2C /* STATUS Register */
> +
> +/* Mode Register A register bits */
> +#define MRA_OUTPUT_MODE_MASK	(3 << 6)
> +#define MRA_ITUR_BT601		(1 << 6)
> +#define MRA_ITUR_BT656		(0 << 6)
> +#define MRA_INPUT_MODE_MASK	(7 << 3)
> +#define MRA_PAL_BT601		(4 << 3)
> +#define MRA_NTSC_BT601		(0 << 3)
> +#define MRA_REGISTER_MODE	(1 << 0)
> +
> +/* Mode Register C register bits */
> +#define MRC_AUTOSELECT		(1 << 7)
> +
> +/* Luminance Control register bits */
> +#define LUMC_ONOFF_SHIFT	7
> +#define LUMC_ONOFF_MASK		(1 << 7)
> +
> +/* Contrast level control register bits */
> +#define CLC_CONTRAST_ONOFF	(1 << 7)
> +#define CLC_CONTRAST_MASK	0x0F
> +
> +/* Sync separation level register bits */
> +#define SSEPL_LUMINANCE_ONOFF	(1 << 7)
> +#define SSEPL_LUMINANCE_MASK	0x7F
> +
> +/* Chrominance Control A register bits */
> +#define CHRCA_MODE_SHIFT	6
> +#define CHRCA_MODE_MASK		(1 << 6)
> +
> +/* ACC Loop filter & Chrominance control register bits */
> +#define ACCC_CHROMA_CR_SHIFT	3
> +#define ACCC_CHROMA_CR_MASK	(7 << 3)
> +#define ACCC_CHROMA_CB_SHIFT	0
> +#define ACCC_CHROMA_CB_MASK	(7 << 0)
> +
> +/* ACC Reference level control register bits */
> +#define ACCRC_CHROMA_MASK	0xfc
> +#define ACCRC_CHROMA_SHIFT	2
> +
> +/* ADC Register 2 register bits */
> +#define ADC2_CLAMP_VOLTAGE_MASK	(7 << 1)
> +#define ADC2_CLAMP_VOLTAGE(n)	((n & 7) << 1)
> +
> +/* PLL Register 1 register bits */
> +#define PLLR1_FIXED_CLOCK	(1 << 7)
> +
> +/* STATUS Register register bits */
> +#define STATUS_HLOCK_DETECT	(1 << 3)
> +#define STATUS_NTSCPAL		(1 << 2)
> +
> +struct ml86v7667_priv {
> +	struct v4l2_subdev		sd;
> +	struct v4l2_ctrl_handler	hdl;
> +	struct v4l2_mbus_framefmt	fmt;
> +	v4l2_std_id			std;
> +};
> +
> +static inline struct ml86v7667_priv *to_ml86v7667(struct v4l2_subdev *subdev)
> +{
> +	return container_of(subdev, struct ml86v7667_priv, sd);
> +}
> +
> +static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
> +{
> +	return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd;
> +}
> +
> +static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg,
> +			      const u8 mask, const u8 data)
> +{
> +	int val = i2c_smbus_read_byte_data(client, reg);
> +	if (val < 0)
> +		return val;
> +
> +	val = (val & ~mask) | (data & mask);
> +	return i2c_smbus_write_byte_data(client, reg, val);
> +}
> +
> +static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> +	struct v4l2_subdev *sd = to_sd(ctrl);
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +	int ret = 0;
> +
> +	switch (ctrl->id) {
> +	case V4L2_CID_BRIGHTNESS:
> +		ret = ml86v7667_mask_set(client, SSEPL_REG,
> +					 SSEPL_LUMINANCE_MASK, ctrl->val);
> +		break;
> +	case V4L2_CID_CONTRAST:
> +		ret = ml86v7667_mask_set(client, CLC_REG,
> +					 CLC_CONTRAST_MASK, ctrl->val);
> +		break;
> +	case V4L2_CID_CHROMA_GAIN:
> +		ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK,
> +					 ctrl->val << ACCRC_CHROMA_SHIFT);
> +		break;
> +	case V4L2_CID_HUE:
> +		ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val);
> +		break;
> +	case V4L2_CID_RED_BALANCE:
> +		ret = ml86v7667_mask_set(client, ACCC_REG,
> +					 ACCC_CHROMA_CR_MASK,
> +					 ctrl->val << ACCC_CHROMA_CR_SHIFT);
> +		break;
> +	case V4L2_CID_BLUE_BALANCE:
> +		ret = ml86v7667_mask_set(client, ACCC_REG,
> +					 ACCC_CHROMA_CB_MASK,
> +					 ctrl->val << ACCC_CHROMA_CB_SHIFT);
> +		break;
> +	case V4L2_CID_SHARPNESS:
> +		ret = ml86v7667_mask_set(client, LUMC_REG,
> +					 LUMC_ONOFF_MASK,
> +					 ctrl->val << LUMC_ONOFF_SHIFT);
> +		break;
> +	case V4L2_CID_COLOR_KILLER:
> +		ret = ml86v7667_mask_set(client, CHRCA_REG,
> +					 CHRCA_MODE_MASK,
> +					 ctrl->val << CHRCA_MODE_SHIFT);
> +		break;
> +	}
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
> +{
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +	int status;
> +
> +	status = i2c_smbus_read_byte_data(client, STATUS_REG);
> +	if (status < 0)
> +		return status;
> +
> +	if (!(status & STATUS_HLOCK_DETECT))
> +		return V4L2_STD_UNKNOWN;
> +
> +	*std = status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_g_input_status(struct v4l2_subdev *sd, u32 *status)
> +{
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +	int status_reg;
> +
> +	status_reg = i2c_smbus_read_byte_data(client, STATUS_REG);
> +	if (status_reg < 0)
> +		return status_reg;
> +
> +	*status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL;
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
> +				   enum v4l2_mbus_pixelcode *code)
> +{
> +	if (index > 0)
> +		return -EINVAL;
> +
> +	*code = V4L2_MBUS_FMT_YUYV8_2X8;
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_try_mbus_fmt(struct v4l2_subdev *sd,
> +				  struct v4l2_mbus_framefmt *fmt)
> +{
> +	struct ml86v7667_priv *priv = to_ml86v7667(sd);
> +
> +	fmt->code = V4L2_MBUS_FMT_YUYV8_2X8;
> +	fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
> +	fmt->field = priv->std & V4L2_STD_525_60 ?
> +		     V4L2_FIELD_INTERLACED_BT : V4L2_FIELD_INTERLACED_TB;

Just use V4L2_FIELD_INTERLACED.

> +	fmt->width = 720;
> +	fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576;
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_g_mbus_fmt(struct v4l2_subdev *sd,
> +				struct v4l2_mbus_framefmt *fmt)
> +{
> +	struct ml86v7667_priv *priv = to_ml86v7667(sd);
> +
> +	*fmt = priv->fmt;
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_s_mbus_fmt(struct v4l2_subdev *sd,
> +				struct v4l2_mbus_framefmt *fmt)
> +{
> +	struct ml86v7667_priv *priv = to_ml86v7667(sd);
> +
> +	ml86v7667_try_mbus_fmt(sd, fmt);
> +	priv->fmt = *fmt;
> +
> +	return 0;
> +}

Same comment I made with the adv7180: try/g/s_mbus_fmt are really all
identical, so just point all three ops to the same function.

> +
> +static int ml86v7667_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
> +{
> +	struct ml86v7667_priv *priv = to_ml86v7667(sd);
> +
> +	a->bounds.left = 0;
> +	a->bounds.top = 0;
> +	a->bounds.width = 720;
> +	a->bounds.height = priv->std & V4L2_STD_525_60 ? 480 : 576;
> +	a->defrect = a->bounds;
> +	a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> +	a->pixelaspect.numerator = 1;
> +	a->pixelaspect.denominator = 1;
> +
> +	return 0;
> +}

Can be dropped: only needed if this driver can do actual cropping.

> +
> +static int ml86v7667_g_mbus_config(struct v4l2_subdev *sd,
> +				   struct v4l2_mbus_config *cfg)
> +{
> +	cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
> +		     V4L2_MBUS_DATA_ACTIVE_HIGH;
> +	cfg->type = V4L2_MBUS_BT656;
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
> +{
> +	struct ml86v7667_priv *priv = to_ml86v7667(sd);
> +	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
> +	int ret;
> +	u8 mode;
> +
> +	/* PAL/NTSC ITU-R BT.601 input mode */
> +	mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
> +	ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode);
> +	if (ret < 0)
> +		return ret;
> +
> +	priv->std = std;
> +
> +	return 0;
> +}
> +
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> +static int ml86v7667_g_register(struct v4l2_subdev *sd,
> +				struct v4l2_dbg_register *reg)
> +{
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +	int ret;
> +
> +	if (!v4l2_chip_match_i2c_client(client, &reg->match))
> +		return -EINVAL;
> +	if (!capable(CAP_SYS_ADMIN))
> +		return -EPERM;

Drop this 'capable' test: that's already done in the v4l2 core.

> +
> +	ret = i2c_smbus_read_byte_data(client, (u8)reg->reg);
> +	if (ret < 0)
> +		return ret;
> +
> +	reg->val = ret;
> +	reg->size = sizeof(u8);
> +
> +	return 0;
> +}
> +
> +static int ml86v7667_s_register(struct v4l2_subdev *sd,
> +				struct v4l2_dbg_register *reg)
> +{
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +
> +	if (!v4l2_chip_match_i2c_client(client, &reg->match))
> +		return -EINVAL;
> +	if (!capable(CAP_SYS_ADMIN))
> +		return -EPERM;

Ditto.

> +
> +	return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val);
> +}
> +#endif
> +
> +static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = {
> +	.s_ctrl = ml86v7667_s_ctrl,
> +};
> +
> +static struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = {
> +	.querystd = ml86v7667_querystd,
> +	.g_input_status = ml86v7667_g_input_status,
> +	.enum_mbus_fmt = ml86v7667_enum_mbus_fmt,
> +	.try_mbus_fmt = ml86v7667_try_mbus_fmt,
> +	.g_mbus_fmt = ml86v7667_g_mbus_fmt,
> +	.s_mbus_fmt = ml86v7667_s_mbus_fmt,
> +	.cropcap = ml86v7667_cropcap,
> +	.g_mbus_config = ml86v7667_g_mbus_config,
> +};
> +
> +static struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = {
> +	.s_std = ml86v7667_s_std,
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> +	.g_register = ml86v7667_g_register,
> +	.s_register = ml86v7667_s_register,
> +#endif
> +};
> +
> +static struct v4l2_subdev_ops ml86v7667_subdev_ops = {
> +	.core = &ml86v7667_subdev_core_ops,
> +	.video = &ml86v7667_subdev_video_ops,
> +};
> +
> +static int ml86v7667_init(struct ml86v7667_priv *priv)
> +{
> +	struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
> +	int val;
> +	int ret;
> +
> +	/* BT.656-4 output mode, register mode */
> +	ret = ml86v7667_mask_set(client, MRA_REG,
> +				 MRA_OUTPUT_MODE_MASK | MRA_REGISTER_MODE,
> +				 MRA_ITUR_BT656 | MRA_REGISTER_MODE);
> +
> +	/* PLL circuit fixed clock, 32MHz */
> +	ret |= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK,
> +				  PLLR1_FIXED_CLOCK);
> +
> +	/* ADC2 clamping voltage maximum  */
> +	ret |= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK,
> +				  ADC2_CLAMP_VOLTAGE(7));
> +
> +	/* enable luminance function */
> +	ret |= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF,
> +				  SSEPL_LUMINANCE_ONOFF);
> +
> +	/* enable contrast function */
> +	ret |= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0);
> +
> +	/*
> +	 * PAL/NTSC autodetection is enabled after reset,
> +	 * set the autodetected std in manual std mode and
> +	 * disable autodetection
> +	 */
> +	val = i2c_smbus_read_byte_data(client, STATUS_REG);
> +	if (val < 0)
> +		return val;
> +
> +	priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
> +	ret |= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0);
> +
> +	val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
> +	ret |= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val);
> +
> +	return ret;
> +}
> +
> +static int ml86v7667_probe(struct i2c_client *client,
> +			   const struct i2c_device_id *did)
> +{
> +	struct ml86v7667_priv *priv;
> +	int ret;
> +
> +	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
> +		return -EIO;
> +
> +	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
> +	if (!priv)
> +		return -ENOMEM;
> +
> +	v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops);
> +
> +	v4l2_ctrl_handler_init(&priv->hdl, 8);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_BRIGHTNESS, -64, 63, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_CONTRAST, -8, 7, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_HUE, -128, 127, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_RED_BALANCE, -4, 3, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_SHARPNESS, 0, 1, 1, 0);
> +	v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
> +			  V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
> +	priv->sd.ctrl_handler = &priv->hdl;
> +
> +	ret = priv->hdl.error;
> +	if (ret)
> +		goto cleanup;
> +
> +	v4l2_ctrl_handler_setup(&priv->hdl);
> +
> +	ret = ml86v7667_init(priv);
> +	if (ret)
> +		goto cleanup;
> +
> +	v4l_info(client, "chip found @ 0x%02x (%s)\n",
> +		 client->addr, client->adapter->name);
> +	return 0;
> +
> +cleanup:
> +	v4l2_ctrl_handler_free(&priv->hdl);
> +	v4l2_device_unregister_subdev(&priv->sd);
> +	v4l_err(client, "failed to probe @ 0x%02x (%s)\n",
> +		client->addr, client->adapter->name);
> +	return ret;
> +}
> +
> +static int ml86v7667_remove(struct i2c_client *client)
> +{
> +	struct v4l2_subdev *sd = i2c_get_clientdata(client);
> +	struct ml86v7667_priv *priv = to_ml86v7667(sd);
> +
> +	v4l2_ctrl_handler_free(&priv->hdl);
> +	v4l2_device_unregister_subdev(&priv->sd);
> +
> +	return 0;
> +}
> +
> +static const struct i2c_device_id ml86v7667_id[] = {
> +	{DRV_NAME, 0},
> +	{},
> +};
> +MODULE_DEVICE_TABLE(i2c, ml86v7667_id);
> +
> +static struct i2c_driver ml86v7667_i2c_driver = {
> +	.driver = {
> +		.name	= DRV_NAME,
> +		.owner	= THIS_MODULE,
> +	},
> +	.probe		= ml86v7667_probe,
> +	.remove		= ml86v7667_remove,
> +	.id_table	= ml86v7667_id,
> +};
> +
> +module_i2c_driver(ml86v7667_i2c_driver);
> +
> +MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver");
> +MODULE_AUTHOR("Vladimir Barinov");
> +MODULE_LICENSE("GPL");

Regards,

	Hans
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