media: Added Analog Devices ADV7280 video decoder driver

3 files changed, 759 insertions, 0 deletions

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index fad1585463bb..a24d191a491d 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -279,6 +279,15 @@ config VIDEO_ADV7180
 	  To compile this driver as a module, choose M here: the
 	  module will be called adv7180.
 
+config VIDEO_ADV7280
+	tristate "Analog Devices ADV7280 decoder (NEW)"
+	depends on VIDEO_V4L2 && I2C
+	---help---
+	  Support for the Analog Devices ADV7280 video decoder.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adv7280.
+
 config VIDEO_BT819
 	tristate "BT819A VideoStream decoder"
 	depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index b0e3d4c020fc..d7e80cf2fbe9 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_VIDEO_SAA7191) += saa7191.o
 obj-$(CONFIG_VIDEO_ADV7170) += adv7170.o
 obj-$(CONFIG_VIDEO_ADV7175) += adv7175.o
 obj-$(CONFIG_VIDEO_ADV7180) += adv7180.o
+obj-$(CONFIG_VIDEO_ADV7280) += adv7280.o
 obj-$(CONFIG_VIDEO_ADV7343) += adv7343.o
 obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
 obj-$(CONFIG_VIDEO_BT819) += bt819.o
diff --git a/drivers/media/video/adv7280.c b/drivers/media/video/adv7280.c
new file mode 100644
index 000000000000..47572b65dfd9
--- /dev/null
+++ b/drivers/media/video/adv7280.c
@@ -0,0 +1,749 @@
+/*
+ * ADV7280 camera decoder driver
+ *
+ * Copyright (c) 2014 Antmicro Ltd <www.antmicro.com>
+ * Based on 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/slab.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/soc_camera.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+
+#define DRIVER_NAME "adv7280"
+
+#define HW_DEINT /* Enable hardware deinterlacer */
+#define VPP_SLAVE_ADDRESS 0x42
+
+/* User Sub Map Regs */
+#define ADV7280_INPUT_CONTROL 0x00
+#define ADV7280_VIDEO_SELECTION_1 0x01
+#define ADV7280_VIDEO_SELECTION_2 0x02
+#define ADV7280_OUTPUT_CONTROL 0x03
+#define ADV7280_EXTENDED_OUTPUT_CONTROL 0x04
+#define ADV7280_AUTODETECT_ENABLE 0x07
+#define ADV7280_ADI_CONTROL_1 0x0E
+#define ADV7280_POWER_MANAGEMENT 0x0F
+#define ADV7280_STATUS_1 0x10
+#define ADV7280_IDENT 0x11
+#define ADV7280_SHAPING_FILTER_CONTROL_1 0x17
+#define ADV7280_ADI_CONTROL_2 0x1D
+#define ADV7280_PIXEL_DELAY_CONTROL 0x27
+#define ADV7280_VPP_SLAVE_ADDRESS 0xFD
+#define ADV7280_OUTPUT_SYNC_SELECT_2 0x6B
+
+/* VPP regs */
+#define VPP_DEINT_RESET 0x41
+#define VPP_I2C_DEINT_ENABLE 0x55
+#define VPP_ADV_TIMING_MODE_EN 0x5B
+
+#define ADV7280_EXTENDED_OUTPUT_CONTROL_NTSCDIS		0xC5
+#define ADV7280_AUTODETECT_DEFAULT			0x7f
+
+#define ADV7280_INPUT_CONTROL_COMPOSITE_IN1		0x00
+#define ADV7280_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM	0x00
+
+#define ADV7280_INPUT_CONTROL_NTSC_M 0x50
+#define ADV7280_INPUT_CONTROL_PAL60 0x60
+#define ADV7280_INPUT_CONTROL_NTSC_443 0x70
+#define ADV7280_INPUT_CONTROL_PAL_BG 0x80
+#define ADV7280_INPUT_CONTROL_PAL_N 0x90
+#define ADV7280_INPUT_CONTROL_PAL_M 0xa0
+#define ADV7280_INPUT_CONTROL_PAL_M_PED 0xb0
+#define ADV7280_INPUT_CONTROL_PAL_COMB_N 0xc0
+#define ADV7280_INPUT_CONTROL_PAL_COMB_N_PED 0xd0
+#define ADV7280_INPUT_CONTROL_PAL_SECAM 0xe0
+
+#define ADV7280_ADI_CTRL_IRQ_SPACE			0x20
+
+#define ADV7280_STATUS1_IN_LOCK		0x01
+#define ADV7280_STATUS1_AUTOD_MASK	0x70
+#define ADV7280_STATUS1_AUTOD_NTSM_M_J	0x00
+#define ADV7280_STATUS1_AUTOD_NTSC_4_43 0x10
+#define ADV7280_STATUS1_AUTOD_PAL_M	0x20
+#define ADV7280_STATUS1_AUTOD_PAL_60	0x30
+#define ADV7280_STATUS1_AUTOD_PAL_B_G	0x40
+#define ADV7280_STATUS1_AUTOD_SECAM	0x50
+#define ADV7280_STATUS1_AUTOD_PAL_COMB	0x60
+#define ADV7280_STATUS1_AUTOD_SECAM_525	0x70
+
+#define ADV7280_ICONF1_ADI		0x40
+#define ADV7280_ICONF1_ACTIVE_LOW	0x01
+#define ADV7280_ICONF1_PSYNC_ONLY	0x10
+
+#define ADV7280_IMR1_ADI	0x44
+#define ADV7280_IMR2_ADI	0x48
+#define ADV7280_IRQ3_AD_CHANGE	0x08
+#define ADV7280_ISR3_ADI	0x4A
+#define ADV7280_ICR3_ADI	0x4B
+#define ADV7280_IMR3_ADI	0x4C
+#define ADV7280_IMR4_ADI	0x50
+
+struct adv7280_state {
+	struct v4l2_subdev	sd;
+	struct work_struct	work;
+	struct mutex		mutex; /* mutual excl. when accessing chip */
+	int			irq;
+	v4l2_std_id		curr_norm;
+	bool			autodetect;
+	int			active_input;
+};
+
+static v4l2_std_id adv7280_std_to_v4l2(u8 status1)
+{
+	switch (status1 & ADV7280_STATUS1_AUTOD_MASK) {
+	case ADV7280_STATUS1_AUTOD_NTSM_M_J:
+		return V4L2_STD_NTSC;
+	case ADV7280_STATUS1_AUTOD_NTSC_4_43:
+		return V4L2_STD_NTSC_443;
+	case ADV7280_STATUS1_AUTOD_PAL_M:
+		return V4L2_STD_PAL_M;
+	case ADV7280_STATUS1_AUTOD_PAL_60:
+		return V4L2_STD_PAL_60;
+	case ADV7280_STATUS1_AUTOD_PAL_B_G:
+		return V4L2_STD_PAL;
+	case ADV7280_STATUS1_AUTOD_SECAM:
+		return V4L2_STD_SECAM;
+	case ADV7280_STATUS1_AUTOD_PAL_COMB:
+		return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
+	case ADV7280_STATUS1_AUTOD_SECAM_525:
+		return V4L2_STD_SECAM;
+	default:
+		return V4L2_STD_UNKNOWN;
+	}
+}
+
+static int v4l2_std_to_adv7280(v4l2_std_id std)
+{
+	if (std == V4L2_STD_PAL_60)
+		return ADV7280_INPUT_CONTROL_PAL60;
+	if (std == V4L2_STD_NTSC_443)
+		return ADV7280_INPUT_CONTROL_NTSC_443;
+	if (std == V4L2_STD_PAL_N)
+		return ADV7280_INPUT_CONTROL_PAL_N;
+	if (std == V4L2_STD_PAL_M)
+		return ADV7280_INPUT_CONTROL_PAL_M;
+	if (std == V4L2_STD_PAL_Nc)
+		return ADV7280_INPUT_CONTROL_PAL_COMB_N;
+
+	if (std & V4L2_STD_PAL)
+		return ADV7280_INPUT_CONTROL_PAL_BG;
+	if (std & V4L2_STD_NTSC)
+		return ADV7280_INPUT_CONTROL_NTSC_M;
+	if (std & V4L2_STD_SECAM)
+		return ADV7280_INPUT_CONTROL_PAL_SECAM;
+
+	return -EINVAL;
+}
+
+static int adv7280_write_reg(struct i2c_client *client, u8 reg, u8 val)
+{
+	/* printk("(0x%02X) 0x%02X --> 0x%02X\n", client->addr, reg, val); */
+	i2c_smbus_write_byte_data(client, reg, val);
+	return 0;
+}
+
+static u32 adv7280_status_to_v4l2(u8 status1)
+{
+	if (!(status1 & ADV7280_STATUS1_IN_LOCK))
+		return V4L2_IN_ST_NO_SIGNAL;
+
+	return 0;
+}
+
+static int __adv7280_status(struct i2c_client *client, u32 *status,
+	v4l2_std_id *std)
+{
+	int status1 = i2c_smbus_read_byte_data(client, ADV7280_STATUS_1);
+
+	if (status1 < 0)
+		return status1;
+
+	if (status)
+		*status = adv7280_status_to_v4l2(status1);
+	if (std)
+		*std = adv7280_std_to_v4l2(status1);
+
+	return 0;
+}
+
+static inline struct adv7280_state *to_state(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct adv7280_state, sd);
+}
+
+static int adv7280_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+	struct adv7280_state *state = to_state(sd);
+	int err = mutex_lock_interruptible(&state->mutex);
+	if (err)
+		return err;
+
+	/* when we are interrupt driven we know the state */
+	if (!state->autodetect || state->irq > 0)
+		*std = state->curr_norm;
+	else
+		err = __adv7280_status(v4l2_get_subdevdata(sd), NULL, std);
+
+	mutex_unlock(&state->mutex);
+	return err;
+}
+
+static int adv7280_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+	struct adv7280_state *state = to_state(sd);
+	int ret = mutex_lock_interruptible(&state->mutex);
+	if (ret)
+		return ret;
+
+	ret = __adv7280_status(v4l2_get_subdevdata(sd), status, NULL);
+	mutex_unlock(&state->mutex);
+	return ret;
+}
+
+static int adv7280_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_ADV7280, 0);
+}
+
+static int adv7280_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+	struct adv7280_state *state = to_state(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret = mutex_lock_interruptible(&state->mutex);
+	if (ret)
+		return ret;
+
+	/* all standards -> autodetect */
+	if (std == V4L2_STD_ALL) {
+		ret = adv7280_write_reg(client,
+			ADV7280_INPUT_CONTROL,
+			ADV7280_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM |
+					(ADV7280_INPUT_CONTROL_COMPOSITE_IN1 +
+					 state->active_input));
+		if (ret < 0)
+			goto out;
+
+		__adv7280_status(client, NULL, &state->curr_norm);
+		state->autodetect = true;
+	} else {
+		ret = v4l2_std_to_adv7280(std) |
+				(ADV7280_INPUT_CONTROL_COMPOSITE_IN1 +
+				 state->active_input);
+		if (ret < 0)
+			goto out;
+
+		ret = adv7280_write_reg(client,
+			ADV7280_INPUT_CONTROL, ret);
+		if (ret < 0)
+			goto out;
+
+		state->curr_norm = std;
+		state->autodetect = false;
+	}
+	ret = 0;
+out:
+	mutex_unlock(&state->mutex);
+	return ret;
+}
+
+static int adv7280_set_bus_param(struct soc_camera_device *icd,
+				 unsigned long flags)
+{
+	return 0;
+}
+
+/* Request bus settings on camera side */
+static unsigned long adv7280_query_bus_param(struct soc_camera_device *icd)
+{
+	struct soc_camera_link *icl = to_soc_camera_link(icd);
+
+	unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
+		SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
+		SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
+
+	return soc_camera_apply_sensor_flags(icl, flags);
+}
+
+static enum v4l2_mbus_pixelcode adv7280_codes[] = {
+	V4L2_MBUS_FMT_YUYV8_2X8,
+};
+
+static int adv7280_s_fmt(struct v4l2_subdev *sd,
+			 struct v4l2_mbus_framefmt *mf)
+{
+	enum v4l2_colorspace cspace;
+	enum v4l2_mbus_pixelcode code = mf->code;
+
+	switch (code) {
+	case V4L2_MBUS_FMT_YUYV8_2X8:
+		cspace = V4L2_COLORSPACE_SRGB;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mf->code        = code;
+	mf->colorspace  = cspace;
+
+	return adv7280_s_std(sd, V4L2_STD_ALL);
+}
+
+static int adv7280_try_fmt(struct v4l2_subdev *sd,
+                          struct v4l2_mbus_framefmt *mf)
+{
+#ifdef HW_DEINT
+	mf->field = V4L2_FIELD_NONE;
+#else
+	mf->field = V4L2_FIELD_INTERLACED_TB;
+#endif
+	mf->code = V4L2_MBUS_FMT_YVYU8_2X8;
+	mf->colorspace = V4L2_COLORSPACE_SRGB;
+
+	// PAL
+	mf->width = 720;
+	mf->height = 576;
+
+	return 0;
+}
+
+static int adv7280_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+                           enum v4l2_mbus_pixelcode *code)
+{
+	if (index >= ARRAY_SIZE(adv7280_codes))
+		return -EINVAL;
+
+	*code = adv7280_codes[index];
+
+	return 0;
+}
+
+static struct soc_camera_ops adv7280_ops = {
+	.set_bus_param		= adv7280_set_bus_param,
+	.query_bus_param	= adv7280_query_bus_param,
+};
+
+static const struct v4l2_subdev_video_ops adv7280_video_ops = {
+	.s_mbus_fmt		= adv7280_s_fmt,
+	.try_mbus_fmt		= adv7280_try_fmt,
+	.enum_mbus_fmt		= adv7280_enum_fmt,
+	.querystd		= adv7280_querystd,
+	.g_input_status		= adv7280_g_input_status,
+};
+
+static const struct v4l2_subdev_core_ops adv7280_core_ops = {
+	.g_chip_ident		= adv7280_g_chip_ident,
+	.s_std			= adv7280_s_std,
+};
+
+static const struct v4l2_subdev_ops adv7280_subdev_ops = {
+	.core			= &adv7280_core_ops,
+	.video			= &adv7280_video_ops,
+};
+
+static void adv7280_work(struct work_struct *work)
+{
+	struct adv7280_state *state = container_of(work, struct adv7280_state,
+		work);
+	struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
+	u8 isr3;
+
+	mutex_lock(&state->mutex);
+	adv7280_write_reg(client, ADV7280_ADI_CONTROL_1,
+		ADV7280_ADI_CTRL_IRQ_SPACE);
+	isr3 = i2c_smbus_read_byte_data(client, ADV7280_ISR3_ADI);
+	/* clear */
+	adv7280_write_reg(client, ADV7280_ICR3_ADI, isr3);
+	adv7280_write_reg(client, ADV7280_ADI_CONTROL_1, 0);
+
+	if (isr3 & ADV7280_IRQ3_AD_CHANGE && state->autodetect)
+		__adv7280_status(client, NULL, &state->curr_norm);
+	mutex_unlock(&state->mutex);
+
+	enable_irq(state->irq);
+}
+
+static irqreturn_t adv7280_irq(int irq, void *devid)
+{
+	struct adv7280_state *state = devid;
+
+	schedule_work(&state->work);
+
+	disable_irq_nosync(state->irq);
+
+	return IRQ_HANDLED;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i) {
+	struct soc_camera_device *icd = file->private_data;
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct adv7280_state *state = to_state(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	u8 val;
+
+	if (i < 6) {
+		state->active_input = i;
+		val = i2c_smbus_read_byte_data(client,
+				ADV7280_INPUT_CONTROL);
+		val &= 0xf0;
+		val |= (ADV7280_INPUT_CONTROL_COMPOSITE_IN1 +
+			state->active_input);
+		return adv7280_write_reg(client,
+				ADV7280_INPUT_CONTROL, val);
+	}
+	return -EINVAL;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) {
+	struct soc_camera_device *icd = file->private_data;
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct adv7280_state *state = to_state(sd);
+
+	*i = state->active_input;
+
+	return 0;
+}
+
+/*
+ * Generic i2c probe
+ * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
+ */
+static __devinit int adv7280_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct adv7280_state *state;
+	struct soc_camera_device *icd = client->dev.platform_data;
+	struct v4l2_subdev *sd;
+	u8 ident;
+	int ret;
+	struct v4l2_ioctl_ops *ops;
+	struct i2c_client vpp_client = {
+		.flags = client->flags,
+		.addr = VPP_SLAVE_ADDRESS,
+		.name = "ADV7180_VPP",
+		.adapter = client->adapter,
+		.dev = client->dev,
+	};
+
+	/* 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 adv7280_state), GFP_KERNEL);
+	if (state == NULL) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	ident = i2c_smbus_read_byte_data(client, ADV7280_IDENT);
+	v4l_info(client, "ident reg is 0x%02x\n", ident);
+
+	state->irq = client->irq;
+	INIT_WORK(&state->work, adv7280_work);
+	mutex_init(&state->mutex);
+	state->autodetect = true;
+	state->active_input = 0; // input 1
+	sd = &state->sd;
+	v4l2_i2c_subdev_init(sd, client, &adv7280_subdev_ops);
+	icd->ops = &adv7280_ops;
+
+	/* Reset */
+	ret = adv7280_write_reg(client,
+		ADV7280_POWER_MANAGEMENT, 0xA0);
+	if (ret < 0)
+		goto err_unreg_subdev;
+	msleep(10);
+
+	/* Initialize adv7280 */
+	/* Exit Power Down Mode */
+	ret = adv7280_write_reg(client,
+		ADV7280_POWER_MANAGEMENT, 0x00);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		ADV7280_ADI_CONTROL_1, 0x80);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		0x9C, 0x00);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		0x9C, 0xFF);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* Enter User Sub Map */
+	ret = adv7280_write_reg(client,
+		ADV7280_ADI_CONTROL_1, 0x00);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* Enable Pixel & Sync output drivers */
+	ret = adv7280_write_reg(client,
+		ADV7280_OUTPUT_CONTROL, 0x0C);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* Power-up INTRQ, HS & VS pads */
+	ret = adv7280_write_reg(client,
+		ADV7280_EXTENDED_OUTPUT_CONTROL, 0x07);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* Enable SH1 */
+	/*
+	ret = adv7280_write_reg(client,
+		ADV7280_SHAPING_FILTER_CONTROL_1, 0x41);
+	if (ret < 0)
+		goto err_unreg_subdev;
+	*/
+
+	/* Disable comb filtering */
+	/*
+	ret = adv7280_write_reg(client,
+		0x39, 0x24);
+	if (ret < 0)
+		goto err_unreg_subdev;
+	*/
+
+	/* Enable LLC output driver */
+	ret = adv7280_write_reg(client,
+		ADV7280_ADI_CONTROL_2, 0x40);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* VSYNC on VS/FIELD/SFL pin */
+	ret = adv7280_write_reg(client,
+		ADV7280_OUTPUT_SYNC_SELECT_2, 0x01);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* Enable autodetection */
+	ret = adv7280_write_reg(client, ADV7280_INPUT_CONTROL,
+		ADV7280_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM |
+				(ADV7280_INPUT_CONTROL_COMPOSITE_IN1 +
+				 state->active_input));
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	ret = adv7280_write_reg(client, ADV7280_AUTODETECT_ENABLE,
+		ADV7280_AUTODETECT_DEFAULT);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* ITU-R BT.656-4 compatible
+	ret = adv7280_write_reg(client,
+		ADV7280_EXTENDED_OUTPUT_CONTROL,
+		ADV7280_EXTENDED_OUTPUT_CONTROL_NTSCDIS);
+	if (ret < 0)
+		goto err_unreg_subdev;
+		*/
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		0x52, 0xCD);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		0x80, 0x51);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		0x81, 0x51);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* analog devices recommends */
+	ret = adv7280_write_reg(client,
+		0x82, 0x68);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+#ifdef HW_DEINT
+	/* Set VPP Map */
+	ret = adv7280_write_reg(client,
+		ADV7280_VPP_SLAVE_ADDRESS, (VPP_SLAVE_ADDRESS << 1));
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* VPP - not documented */
+	ret = adv7280_write_reg(&vpp_client,
+		0xA3, 0x00);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* VPP - Enbable Advanced Timing Mode */
+	ret = adv7280_write_reg(&vpp_client,
+		VPP_ADV_TIMING_MODE_EN, 0x00);
+	if (ret < 0)
+		goto err_unreg_subdev;
+
+	/* VPP - Enable Deinterlacer */
+	ret = adv7280_write_reg(&vpp_client,
+		VPP_I2C_DEINT_ENABLE, 0x80);
+	if (ret < 0)
+		goto err_unreg_subdev;
+#endif
+
+	/* read current norm */
+	__adv7280_status(client, NULL, &state->curr_norm);
+
+	/* register for interrupts */
+	if (state->irq > 0) {
+		ret = request_irq(state->irq, adv7280_irq, 0, DRIVER_NAME,
+			state);
+		if (ret)
+			goto err_unreg_subdev;
+
+		ret = adv7280_write_reg(client, ADV7280_ADI_CONTROL_1,
+			ADV7280_ADI_CTRL_IRQ_SPACE);
+		if (ret < 0)
+			goto err_unreg_subdev;
+
+		/* config the Interrupt pin to be active low */
+		ret = adv7280_write_reg(client, ADV7280_ICONF1_ADI,
+			ADV7280_ICONF1_ACTIVE_LOW | ADV7280_ICONF1_PSYNC_ONLY);
+		if (ret < 0)
+			goto err_unreg_subdev;
+
+		ret = adv7280_write_reg(client, ADV7280_IMR1_ADI, 0);
+		if (ret < 0)
+			goto err_unreg_subdev;
+
+		ret = adv7280_write_reg(client, ADV7280_IMR2_ADI, 0);
+		if (ret < 0)
+			goto err_unreg_subdev;
+
+		/* enable AD change interrupts interrupts */
+		ret = adv7280_write_reg(client, ADV7280_IMR3_ADI,
+			ADV7280_IRQ3_AD_CHANGE);
+		if (ret < 0)
+			goto err_unreg_subdev;
+
+		ret = adv7280_write_reg(client, ADV7280_IMR4_ADI, 0);
+		if (ret < 0)
+			goto err_unreg_subdev;
+
+		ret = adv7280_write_reg(client, ADV7280_ADI_CONTROL_1,
+			0);
+		if (ret < 0)
+			goto err_unreg_subdev;
+	}
+
+	/*
+	 * this is the only way to support more than one input as soc_camera
+	 * assumes in its own vidioc_s(g)_input implementation that only one
+	 * input is present we have to override that with our own handlers.
+	 */
+	ops = (struct v4l2_ioctl_ops*)icd->vdev->ioctl_ops;
+	ops->vidioc_s_input = &vidioc_s_input;
+	ops->vidioc_g_input = &vidioc_g_input;
+
+	return 0;
+
+err_unreg_subdev:
+	mutex_destroy(&state->mutex);
+	v4l2_device_unregister_subdev(sd);
+	kfree(state);
+err:
+	printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", ret);
+	return ret;
+}
+
+static __devexit int adv7280_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct adv7280_state *state = to_state(sd);
+
+	if (state->irq > 0) {
+		free_irq(client->irq, state);
+		if (cancel_work_sync(&state->work)) {
+			/*
+			 * Work was pending, therefore we need to enable
+			 * IRQ here to balance the disable_irq() done in the
+			 * interrupt handler.
+			 */
+			enable_irq(state->irq);
+		}
+	}
+
+	mutex_destroy(&state->mutex);
+	v4l2_device_unregister_subdev(sd);
+	kfree(to_state(sd));
+	return 0;
+}
+
+static const struct i2c_device_id adv7280_id[] = {
+	{DRIVER_NAME, 0},
+	{},
+};
+
+//MODULE_DEVICE_TABLE(i2c, adv7280_id);
+
+static struct i2c_driver adv7280_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= DRIVER_NAME,
+	},
+	.probe		= adv7280_probe,
+	.remove		= __devexit_p(adv7280_remove),
+	.id_table	= adv7280_id,
+};
+
+static __init int adv7280_init(void)
+{
+	return i2c_add_driver(&adv7280_driver);
+}
+
+static __exit void adv7280_exit(void)
+{
+	i2c_del_driver(&adv7280_driver);
+}
+
+module_init(adv7280_init);
+module_exit(adv7280_exit);
+
+MODULE_DESCRIPTION("Analog Devices ADV7280 video decoder driver");
+MODULE_AUTHOR("Antmicro Ltd <www.antmicro.com>, Mocean Laboratories");
+MODULE_LICENSE("GPL v2");