[media] move i2c files into drivers/media/i2c

Move ancillary I2C drivers into drivers/media/i2c, in order to
better organize them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 878 deletions

diff --git a/drivers/media/video/mt9m032.c b/drivers/media/video/mt9m032.c
deleted file mode 100644
index 445359c96113..000000000000
--- a/drivers/media/video/mt9m032.c
+++ /dev/null
@@ -1,878 +0,0 @@
-/*
- * Driver for MT9M032 CMOS Image Sensor from Micron
- *
- * Copyright (C) 2010-2011 Lund Engineering
- * Contact: Gil Lund <gwlund@lundeng.com>
- * Author: Martin Hostettler <martin@neutronstar.dyndns.org>
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/math64.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/v4l2-mediabus.h>
-
-#include <media/media-entity.h>
-#include <media/mt9m032.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-subdev.h>
-
-#include "aptina-pll.h"
-
-/*
- * width and height include active boundary and black parts
- *
- * column    0-  15 active boundary
- * column   16-1455 image
- * column 1456-1471 active boundary
- * column 1472-1599 black
- *
- * row       0-  51 black
- * row      53-  59 active boundary
- * row      60-1139 image
- * row    1140-1147 active boundary
- * row    1148-1151 black
- */
-
-#define MT9M032_PIXEL_ARRAY_WIDTH			1600
-#define MT9M032_PIXEL_ARRAY_HEIGHT			1152
-
-#define MT9M032_CHIP_VERSION				0x00
-#define		MT9M032_CHIP_VERSION_VALUE		0x1402
-#define MT9M032_ROW_START				0x01
-#define		MT9M032_ROW_START_MIN			0
-#define		MT9M032_ROW_START_MAX			1152
-#define		MT9M032_ROW_START_DEF			60
-#define MT9M032_COLUMN_START				0x02
-#define		MT9M032_COLUMN_START_MIN		0
-#define		MT9M032_COLUMN_START_MAX		1600
-#define		MT9M032_COLUMN_START_DEF		16
-#define MT9M032_ROW_SIZE				0x03
-#define		MT9M032_ROW_SIZE_MIN			32
-#define		MT9M032_ROW_SIZE_MAX			1152
-#define		MT9M032_ROW_SIZE_DEF			1080
-#define MT9M032_COLUMN_SIZE				0x04
-#define		MT9M032_COLUMN_SIZE_MIN			32
-#define		MT9M032_COLUMN_SIZE_MAX			1600
-#define		MT9M032_COLUMN_SIZE_DEF			1440
-#define MT9M032_HBLANK					0x05
-#define MT9M032_VBLANK					0x06
-#define		MT9M032_VBLANK_MAX			0x7ff
-#define MT9M032_SHUTTER_WIDTH_HIGH			0x08
-#define MT9M032_SHUTTER_WIDTH_LOW			0x09
-#define		MT9M032_SHUTTER_WIDTH_MIN		1
-#define		MT9M032_SHUTTER_WIDTH_MAX		1048575
-#define		MT9M032_SHUTTER_WIDTH_DEF		1943
-#define MT9M032_PIX_CLK_CTRL				0x0a
-#define		MT9M032_PIX_CLK_CTRL_INV_PIXCLK		0x8000
-#define MT9M032_RESTART					0x0b
-#define MT9M032_RESET					0x0d
-#define MT9M032_PLL_CONFIG1				0x11
-#define		MT9M032_PLL_CONFIG1_OUTDIV_MASK		0x3f
-#define		MT9M032_PLL_CONFIG1_MUL_SHIFT		8
-#define MT9M032_READ_MODE1				0x1e
-#define MT9M032_READ_MODE2				0x20
-#define		MT9M032_READ_MODE2_VFLIP_SHIFT		15
-#define		MT9M032_READ_MODE2_HFLIP_SHIFT		14
-#define		MT9M032_READ_MODE2_ROW_BLC		0x40
-#define MT9M032_GAIN_GREEN1				0x2b
-#define MT9M032_GAIN_BLUE				0x2c
-#define MT9M032_GAIN_RED				0x2d
-#define MT9M032_GAIN_GREEN2				0x2e
-
-/* write only */
-#define MT9M032_GAIN_ALL				0x35
-#define		MT9M032_GAIN_DIGITAL_MASK		0x7f
-#define		MT9M032_GAIN_DIGITAL_SHIFT		8
-#define		MT9M032_GAIN_AMUL_SHIFT			6
-#define		MT9M032_GAIN_ANALOG_MASK		0x3f
-#define MT9M032_FORMATTER1				0x9e
-#define MT9M032_FORMATTER2				0x9f
-#define		MT9M032_FORMATTER2_DOUT_EN		0x1000
-#define		MT9M032_FORMATTER2_PIXCLK_EN		0x2000
-
-/*
- * The available MT9M032 datasheet is missing documentation for register 0x10
- * MT9P031 seems to be close enough, so use constants from that datasheet for
- * now.
- * But keep the name MT9P031 to remind us, that this isn't really confirmed
- * for this sensor.
- */
-#define MT9P031_PLL_CONTROL				0x10
-#define		MT9P031_PLL_CONTROL_PWROFF		0x0050
-#define		MT9P031_PLL_CONTROL_PWRON		0x0051
-#define		MT9P031_PLL_CONTROL_USEPLL		0x0052
-#define MT9P031_PLL_CONFIG2				0x11
-#define		MT9P031_PLL_CONFIG2_P1_DIV_MASK		0x1f
-
-struct mt9m032 {
-	struct v4l2_subdev subdev;
-	struct media_pad pad;
-	struct mt9m032_platform_data *pdata;
-
-	unsigned int pix_clock;
-
-	struct v4l2_ctrl_handler ctrls;
-	struct {
-		struct v4l2_ctrl *hflip;
-		struct v4l2_ctrl *vflip;
-	};
-
-	struct mutex lock; /* Protects streaming, format, interval and crop */
-
-	bool streaming;
-
-	struct v4l2_mbus_framefmt format;
-	struct v4l2_rect crop;
-	struct v4l2_fract frame_interval;
-};
-
-#define to_mt9m032(sd)	container_of(sd, struct mt9m032, subdev)
-#define to_dev(sensor) \
-	(&((struct i2c_client *)v4l2_get_subdevdata(&(sensor)->subdev))->dev)
-
-static int mt9m032_read(struct i2c_client *client, u8 reg)
-{
-	return i2c_smbus_read_word_swapped(client, reg);
-}
-
-static int mt9m032_write(struct i2c_client *client, u8 reg, const u16 data)
-{
-	return i2c_smbus_write_word_swapped(client, reg, data);
-}
-
-static u32 mt9m032_row_time(struct mt9m032 *sensor, unsigned int width)
-{
-	unsigned int effective_width;
-	u32 ns;
-
-	effective_width = width + 716; /* empirical value */
-	ns = div_u64(1000000000ULL * effective_width, sensor->pix_clock);
-	dev_dbg(to_dev(sensor),	"MT9M032 line time: %u ns\n", ns);
-	return ns;
-}
-
-static int mt9m032_update_timing(struct mt9m032 *sensor,
-				 struct v4l2_fract *interval)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	struct v4l2_rect *crop = &sensor->crop;
-	unsigned int min_vblank;
-	unsigned int vblank;
-	u32 row_time;
-
-	if (!interval)
-		interval = &sensor->frame_interval;
-
-	row_time = mt9m032_row_time(sensor, crop->width);
-
-	vblank = div_u64(1000000000ULL * interval->numerator,
-			 (u64)row_time * interval->denominator)
-	       - crop->height;
-
-	if (vblank > MT9M032_VBLANK_MAX) {
-		/* hardware limits to 11 bit values */
-		interval->denominator = 1000;
-		interval->numerator =
-			div_u64((crop->height + MT9M032_VBLANK_MAX) *
-				(u64)row_time * interval->denominator,
-				1000000000ULL);
-		vblank = div_u64(1000000000ULL * interval->numerator,
-				 (u64)row_time * interval->denominator)
-		       - crop->height;
-	}
-	/* enforce minimal 1.6ms blanking time. */
-	min_vblank = 1600000 / row_time;
-	vblank = clamp_t(unsigned int, vblank, min_vblank, MT9M032_VBLANK_MAX);
-
-	return mt9m032_write(client, MT9M032_VBLANK, vblank);
-}
-
-static int mt9m032_update_geom_timing(struct mt9m032 *sensor)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	int ret;
-
-	ret = mt9m032_write(client, MT9M032_COLUMN_SIZE,
-			    sensor->crop.width - 1);
-	if (!ret)
-		ret = mt9m032_write(client, MT9M032_ROW_SIZE,
-				    sensor->crop.height - 1);
-	if (!ret)
-		ret = mt9m032_write(client, MT9M032_COLUMN_START,
-				    sensor->crop.left);
-	if (!ret)
-		ret = mt9m032_write(client, MT9M032_ROW_START,
-				    sensor->crop.top);
-	if (!ret)
-		ret = mt9m032_update_timing(sensor, NULL);
-	return ret;
-}
-
-static int update_formatter2(struct mt9m032 *sensor, bool streaming)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	u16 reg_val =   MT9M032_FORMATTER2_DOUT_EN
-		      | 0x0070;  /* parts reserved! */
-				 /* possibly for changing to 14-bit mode */
-
-	if (streaming)
-		reg_val |= MT9M032_FORMATTER2_PIXCLK_EN;   /* pixclock enable */
-
-	return mt9m032_write(client, MT9M032_FORMATTER2, reg_val);
-}
-
-static int mt9m032_setup_pll(struct mt9m032 *sensor)
-{
-	static const struct aptina_pll_limits limits = {
-		.ext_clock_min = 8000000,
-		.ext_clock_max = 16500000,
-		.int_clock_min = 2000000,
-		.int_clock_max = 24000000,
-		.out_clock_min = 322000000,
-		.out_clock_max = 693000000,
-		.pix_clock_max = 99000000,
-		.n_min = 1,
-		.n_max = 64,
-		.m_min = 16,
-		.m_max = 255,
-		.p1_min = 1,
-		.p1_max = 128,
-	};
-
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	struct mt9m032_platform_data *pdata = sensor->pdata;
-	struct aptina_pll pll;
-	int ret;
-
-	pll.ext_clock = pdata->ext_clock;
-	pll.pix_clock = pdata->pix_clock;
-
-	ret = aptina_pll_calculate(&client->dev, &limits, &pll);
-	if (ret < 0)
-		return ret;
-
-	sensor->pix_clock = pdata->pix_clock;
-
-	ret = mt9m032_write(client, MT9M032_PLL_CONFIG1,
-			    (pll.m << MT9M032_PLL_CONFIG1_MUL_SHIFT)
-			    | (pll.p1 - 1));
-	if (!ret)
-		ret = mt9m032_write(client, MT9P031_PLL_CONFIG2, pll.n - 1);
-	if (!ret)
-		ret = mt9m032_write(client, MT9P031_PLL_CONTROL,
-				    MT9P031_PLL_CONTROL_PWRON |
-				    MT9P031_PLL_CONTROL_USEPLL);
-	if (!ret)		/* more reserved, Continuous, Master Mode */
-		ret = mt9m032_write(client, MT9M032_READ_MODE1, 0x8006);
-	if (!ret)		/* Set 14-bit mode, select 7 divider */
-		ret = mt9m032_write(client, MT9M032_FORMATTER1, 0x111e);
-
-	return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * Subdev pad operations
- */
-
-static int mt9m032_enum_mbus_code(struct v4l2_subdev *subdev,
-				  struct v4l2_subdev_fh *fh,
-				  struct v4l2_subdev_mbus_code_enum *code)
-{
-	if (code->index != 0)
-		return -EINVAL;
-
-	code->code = V4L2_MBUS_FMT_Y8_1X8;
-	return 0;
-}
-
-static int mt9m032_enum_frame_size(struct v4l2_subdev *subdev,
-				   struct v4l2_subdev_fh *fh,
-				   struct v4l2_subdev_frame_size_enum *fse)
-{
-	if (fse->index != 0 || fse->code != V4L2_MBUS_FMT_Y8_1X8)
-		return -EINVAL;
-
-	fse->min_width = MT9M032_COLUMN_SIZE_DEF;
-	fse->max_width = MT9M032_COLUMN_SIZE_DEF;
-	fse->min_height = MT9M032_ROW_SIZE_DEF;
-	fse->max_height = MT9M032_ROW_SIZE_DEF;
-
-	return 0;
-}
-
-/**
- * __mt9m032_get_pad_crop() - get crop rect
- * @sensor: pointer to the sensor struct
- * @fh: file handle for getting the try crop rect from
- * @which: select try or active crop rect
- *
- * Returns a pointer the current active or fh relative try crop rect
- */
-static struct v4l2_rect *
-__mt9m032_get_pad_crop(struct mt9m032 *sensor, struct v4l2_subdev_fh *fh,
-		       enum v4l2_subdev_format_whence which)
-{
-	switch (which) {
-	case V4L2_SUBDEV_FORMAT_TRY:
-		return v4l2_subdev_get_try_crop(fh, 0);
-	case V4L2_SUBDEV_FORMAT_ACTIVE:
-		return &sensor->crop;
-	default:
-		return NULL;
-	}
-}
-
-/**
- * __mt9m032_get_pad_format() - get format
- * @sensor: pointer to the sensor struct
- * @fh: file handle for getting the try format from
- * @which: select try or active format
- *
- * Returns a pointer the current active or fh relative try format
- */
-static struct v4l2_mbus_framefmt *
-__mt9m032_get_pad_format(struct mt9m032 *sensor, struct v4l2_subdev_fh *fh,
-			 enum v4l2_subdev_format_whence which)
-{
-	switch (which) {
-	case V4L2_SUBDEV_FORMAT_TRY:
-		return v4l2_subdev_get_try_format(fh, 0);
-	case V4L2_SUBDEV_FORMAT_ACTIVE:
-		return &sensor->format;
-	default:
-		return NULL;
-	}
-}
-
-static int mt9m032_get_pad_format(struct v4l2_subdev *subdev,
-				  struct v4l2_subdev_fh *fh,
-				  struct v4l2_subdev_format *fmt)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-
-	mutex_lock(&sensor->lock);
-	fmt->format = *__mt9m032_get_pad_format(sensor, fh, fmt->which);
-	mutex_unlock(&sensor->lock);
-
-	return 0;
-}
-
-static int mt9m032_set_pad_format(struct v4l2_subdev *subdev,
-				  struct v4l2_subdev_fh *fh,
-				  struct v4l2_subdev_format *fmt)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-	int ret;
-
-	mutex_lock(&sensor->lock);
-
-	if (sensor->streaming && fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
-		ret = -EBUSY;
-		goto done;
-	}
-
-	/* Scaling is not supported, the format is thus fixed. */
-	fmt->format = *__mt9m032_get_pad_format(sensor, fh, fmt->which);
-	ret = 0;
-
-done:
-	mutex_unlock(&sensor->lock);
-	return ret;
-}
-
-static int mt9m032_get_pad_crop(struct v4l2_subdev *subdev,
-				struct v4l2_subdev_fh *fh,
-				struct v4l2_subdev_crop *crop)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-
-	mutex_lock(&sensor->lock);
-	crop->rect = *__mt9m032_get_pad_crop(sensor, fh, crop->which);
-	mutex_unlock(&sensor->lock);
-
-	return 0;
-}
-
-static int mt9m032_set_pad_crop(struct v4l2_subdev *subdev,
-				struct v4l2_subdev_fh *fh,
-				struct v4l2_subdev_crop *crop)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-	struct v4l2_mbus_framefmt *format;
-	struct v4l2_rect *__crop;
-	struct v4l2_rect rect;
-	int ret = 0;
-
-	mutex_lock(&sensor->lock);
-
-	if (sensor->streaming && crop->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
-		ret = -EBUSY;
-		goto done;
-	}
-
-	/* Clamp the crop rectangle boundaries and align them to a multiple of 2
-	 * pixels to ensure a GRBG Bayer pattern.
-	 */
-	rect.left = clamp(ALIGN(crop->rect.left, 2), MT9M032_COLUMN_START_MIN,
-			  MT9M032_COLUMN_START_MAX);
-	rect.top = clamp(ALIGN(crop->rect.top, 2), MT9M032_ROW_START_MIN,
-			 MT9M032_ROW_START_MAX);
-	rect.width = clamp(ALIGN(crop->rect.width, 2), MT9M032_COLUMN_SIZE_MIN,
-			   MT9M032_COLUMN_SIZE_MAX);
-	rect.height = clamp(ALIGN(crop->rect.height, 2), MT9M032_ROW_SIZE_MIN,
-			    MT9M032_ROW_SIZE_MAX);
-
-	rect.width = min(rect.width, MT9M032_PIXEL_ARRAY_WIDTH - rect.left);
-	rect.height = min(rect.height, MT9M032_PIXEL_ARRAY_HEIGHT - rect.top);
-
-	__crop = __mt9m032_get_pad_crop(sensor, fh, crop->which);
-
-	if (rect.width != __crop->width || rect.height != __crop->height) {
-		/* Reset the output image size if the crop rectangle size has
-		 * been modified.
-		 */
-		format = __mt9m032_get_pad_format(sensor, fh, crop->which);
-		format->width = rect.width;
-		format->height = rect.height;
-	}
-
-	*__crop = rect;
-	crop->rect = rect;
-
-	if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE)
-		ret = mt9m032_update_geom_timing(sensor);
-
-done:
-	mutex_unlock(&sensor->lock);
-	return ret;
-}
-
-static int mt9m032_get_frame_interval(struct v4l2_subdev *subdev,
-				      struct v4l2_subdev_frame_interval *fi)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-
-	mutex_lock(&sensor->lock);
-	memset(fi, 0, sizeof(*fi));
-	fi->interval = sensor->frame_interval;
-	mutex_unlock(&sensor->lock);
-
-	return 0;
-}
-
-static int mt9m032_set_frame_interval(struct v4l2_subdev *subdev,
-				      struct v4l2_subdev_frame_interval *fi)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-	int ret;
-
-	mutex_lock(&sensor->lock);
-
-	if (sensor->streaming) {
-		ret = -EBUSY;
-		goto done;
-	}
-
-	/* Avoid divisions by 0. */
-	if (fi->interval.denominator == 0)
-		fi->interval.denominator = 1;
-
-	ret = mt9m032_update_timing(sensor, &fi->interval);
-	if (!ret)
-		sensor->frame_interval = fi->interval;
-
-done:
-	mutex_unlock(&sensor->lock);
-	return ret;
-}
-
-static int mt9m032_s_stream(struct v4l2_subdev *subdev, int streaming)
-{
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-	int ret;
-
-	mutex_lock(&sensor->lock);
-	ret = update_formatter2(sensor, streaming);
-	if (!ret)
-		sensor->streaming = streaming;
-	mutex_unlock(&sensor->lock);
-
-	return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * V4L2 subdev core operations
- */
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int mt9m032_g_register(struct v4l2_subdev *sd,
-			      struct v4l2_dbg_register *reg)
-{
-	struct mt9m032 *sensor = to_mt9m032(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	int val;
-
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
-		return -EINVAL;
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
-	val = mt9m032_read(client, reg->reg);
-	if (val < 0)
-		return -EIO;
-
-	reg->size = 2;
-	reg->val = val;
-
-	return 0;
-}
-
-static int mt9m032_s_register(struct v4l2_subdev *sd,
-			      struct v4l2_dbg_register *reg)
-{
-	struct mt9m032 *sensor = to_mt9m032(sd);
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-
-	if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
-		return -EINVAL;
-
-	if (reg->match.addr != client->addr)
-		return -ENODEV;
-
-	return mt9m032_write(client, reg->reg, reg->val);
-}
-#endif
-
-/* -----------------------------------------------------------------------------
- * V4L2 subdev control operations
- */
-
-static int update_read_mode2(struct mt9m032 *sensor, bool vflip, bool hflip)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	int reg_val = (vflip << MT9M032_READ_MODE2_VFLIP_SHIFT)
-		    | (hflip << MT9M032_READ_MODE2_HFLIP_SHIFT)
-		    | MT9M032_READ_MODE2_ROW_BLC
-		    | 0x0007;
-
-	return mt9m032_write(client, MT9M032_READ_MODE2, reg_val);
-}
-
-static int mt9m032_set_gain(struct mt9m032 *sensor, s32 val)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	int digital_gain_val;	/* in 1/8th (0..127) */
-	int analog_mul;		/* 0 or 1 */
-	int analog_gain_val;	/* in 1/16th. (0..63) */
-	u16 reg_val;
-
-	digital_gain_val = 51; /* from setup example */
-
-	if (val < 63) {
-		analog_mul = 0;
-		analog_gain_val = val;
-	} else {
-		analog_mul = 1;
-		analog_gain_val = val / 2;
-	}
-
-	/* a_gain = (1 + analog_mul) + (analog_gain_val + 1) / 16 */
-	/* overall_gain = a_gain * (1 + digital_gain_val / 8) */
-
-	reg_val = ((digital_gain_val & MT9M032_GAIN_DIGITAL_MASK)
-		   << MT9M032_GAIN_DIGITAL_SHIFT)
-		| ((analog_mul & 1) << MT9M032_GAIN_AMUL_SHIFT)
-		| (analog_gain_val & MT9M032_GAIN_ANALOG_MASK);
-
-	return mt9m032_write(client, MT9M032_GAIN_ALL, reg_val);
-}
-
-static int mt9m032_try_ctrl(struct v4l2_ctrl *ctrl)
-{
-	if (ctrl->id == V4L2_CID_GAIN && ctrl->val >= 63) {
-		/* round because of multiplier used for values >= 63 */
-		ctrl->val &= ~1;
-	}
-
-	return 0;
-}
-
-static int mt9m032_set_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct mt9m032 *sensor =
-		container_of(ctrl->handler, struct mt9m032, ctrls);
-	struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev);
-	int ret;
-
-	switch (ctrl->id) {
-	case V4L2_CID_GAIN:
-		return mt9m032_set_gain(sensor, ctrl->val);
-
-	case V4L2_CID_HFLIP:
-	/* case V4L2_CID_VFLIP: -- In the same cluster */
-		return update_read_mode2(sensor, sensor->vflip->val,
-					 sensor->hflip->val);
-
-	case V4L2_CID_EXPOSURE:
-		ret = mt9m032_write(client, MT9M032_SHUTTER_WIDTH_HIGH,
-				    (ctrl->val >> 16) & 0xffff);
-		if (ret < 0)
-			return ret;
-
-		return mt9m032_write(client, MT9M032_SHUTTER_WIDTH_LOW,
-				     ctrl->val & 0xffff);
-	}
-
-	return 0;
-}
-
-static struct v4l2_ctrl_ops mt9m032_ctrl_ops = {
-	.s_ctrl = mt9m032_set_ctrl,
-	.try_ctrl = mt9m032_try_ctrl,
-};
-
-/* -------------------------------------------------------------------------- */
-
-static const struct v4l2_subdev_core_ops mt9m032_core_ops = {
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	.g_register = mt9m032_g_register,
-	.s_register = mt9m032_s_register,
-#endif
-};
-
-static const struct v4l2_subdev_video_ops mt9m032_video_ops = {
-	.s_stream = mt9m032_s_stream,
-	.g_frame_interval = mt9m032_get_frame_interval,
-	.s_frame_interval = mt9m032_set_frame_interval,
-};
-
-static const struct v4l2_subdev_pad_ops mt9m032_pad_ops = {
-	.enum_mbus_code = mt9m032_enum_mbus_code,
-	.enum_frame_size = mt9m032_enum_frame_size,
-	.get_fmt = mt9m032_get_pad_format,
-	.set_fmt = mt9m032_set_pad_format,
-	.set_crop = mt9m032_set_pad_crop,
-	.get_crop = mt9m032_get_pad_crop,
-};
-
-static const struct v4l2_subdev_ops mt9m032_ops = {
-	.core = &mt9m032_core_ops,
-	.video = &mt9m032_video_ops,
-	.pad = &mt9m032_pad_ops,
-};
-
-/* -----------------------------------------------------------------------------
- * Driver initialization and probing
- */
-
-static int mt9m032_probe(struct i2c_client *client,
-			 const struct i2c_device_id *devid)
-{
-	struct mt9m032_platform_data *pdata = client->dev.platform_data;
-	struct i2c_adapter *adapter = client->adapter;
-	struct mt9m032 *sensor;
-	int chip_version;
-	int ret;
-
-	if (pdata == NULL) {
-		dev_err(&client->dev, "No platform data\n");
-		return -EINVAL;
-	}
-
-	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
-		dev_warn(&client->dev,
-			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
-		return -EIO;
-	}
-
-	if (!client->dev.platform_data)
-		return -ENODEV;
-
-	sensor = kzalloc(sizeof(*sensor), GFP_KERNEL);
-	if (sensor == NULL)
-		return -ENOMEM;
-
-	mutex_init(&sensor->lock);
-
-	sensor->pdata = pdata;
-
-	v4l2_i2c_subdev_init(&sensor->subdev, client, &mt9m032_ops);
-	sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-
-	chip_version = mt9m032_read(client, MT9M032_CHIP_VERSION);
-	if (chip_version != MT9M032_CHIP_VERSION_VALUE) {
-		dev_err(&client->dev, "MT9M032 not detected, wrong version "
-			"0x%04x\n", chip_version);
-		ret = -ENODEV;
-		goto error_sensor;
-	}
-
-	dev_info(&client->dev, "MT9M032 detected at address 0x%02x\n",
-		 client->addr);
-
-	sensor->frame_interval.numerator = 1;
-	sensor->frame_interval.denominator = 30;
-
-	sensor->crop.left = MT9M032_COLUMN_START_DEF;
-	sensor->crop.top = MT9M032_ROW_START_DEF;
-	sensor->crop.width = MT9M032_COLUMN_SIZE_DEF;
-	sensor->crop.height = MT9M032_ROW_SIZE_DEF;
-
-	sensor->format.width = sensor->crop.width;
-	sensor->format.height = sensor->crop.height;
-	sensor->format.code = V4L2_MBUS_FMT_Y8_1X8;
-	sensor->format.field = V4L2_FIELD_NONE;
-	sensor->format.colorspace = V4L2_COLORSPACE_SRGB;
-
-	v4l2_ctrl_handler_init(&sensor->ctrls, 5);
-
-	v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
-			  V4L2_CID_GAIN, 0, 127, 1, 64);
-
-	sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls,
-					  &mt9m032_ctrl_ops,
-					  V4L2_CID_HFLIP, 0, 1, 1, 0);
-	sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls,
-					  &mt9m032_ctrl_ops,
-					  V4L2_CID_VFLIP, 0, 1, 1, 0);
-
-	v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
-			  V4L2_CID_EXPOSURE, MT9M032_SHUTTER_WIDTH_MIN,
-			  MT9M032_SHUTTER_WIDTH_MAX, 1,
-			  MT9M032_SHUTTER_WIDTH_DEF);
-	v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
-			  V4L2_CID_PIXEL_RATE, pdata->pix_clock,
-			  pdata->pix_clock, 1, pdata->pix_clock);
-
-	if (sensor->ctrls.error) {
-		ret = sensor->ctrls.error;
-		dev_err(&client->dev, "control initialization error %d\n", ret);
-		goto error_ctrl;
-	}
-
-	v4l2_ctrl_cluster(2, &sensor->hflip);
-
-	sensor->subdev.ctrl_handler = &sensor->ctrls;
-	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
-	ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad, 0);
-	if (ret < 0)
-		goto error_ctrl;
-
-	ret = mt9m032_write(client, MT9M032_RESET, 1);	/* reset on */
-	if (ret < 0)
-		goto error_entity;
-	mt9m032_write(client, MT9M032_RESET, 0);	/* reset off */
-	if (ret < 0)
-		goto error_entity;
-
-	ret = mt9m032_setup_pll(sensor);
-	if (ret < 0)
-		goto error_entity;
-	usleep_range(10000, 11000);
-
-	ret = v4l2_ctrl_handler_setup(&sensor->ctrls);
-	if (ret < 0)
-		goto error_entity;
-
-	/* SIZE */
-	ret = mt9m032_update_geom_timing(sensor);
-	if (ret < 0)
-		goto error_entity;
-
-	ret = mt9m032_write(client, 0x41, 0x0000);	/* reserved !!! */
-	if (ret < 0)
-		goto error_entity;
-	ret = mt9m032_write(client, 0x42, 0x0003);	/* reserved !!! */
-	if (ret < 0)
-		goto error_entity;
-	ret = mt9m032_write(client, 0x43, 0x0003);	/* reserved !!! */
-	if (ret < 0)
-		goto error_entity;
-	ret = mt9m032_write(client, 0x7f, 0x0000);	/* reserved !!! */
-	if (ret < 0)
-		goto error_entity;
-	if (sensor->pdata->invert_pixclock) {
-		ret = mt9m032_write(client, MT9M032_PIX_CLK_CTRL,
-				    MT9M032_PIX_CLK_CTRL_INV_PIXCLK);
-		if (ret < 0)
-			goto error_entity;
-	}
-
-	ret = mt9m032_write(client, MT9M032_RESTART, 1); /* Restart on */
-	if (ret < 0)
-		goto error_entity;
-	msleep(100);
-	ret = mt9m032_write(client, MT9M032_RESTART, 0); /* Restart off */
-	if (ret < 0)
-		goto error_entity;
-	msleep(100);
-	ret = update_formatter2(sensor, false);
-	if (ret < 0)
-		goto error_entity;
-
-	return ret;
-
-error_entity:
-	media_entity_cleanup(&sensor->subdev.entity);
-error_ctrl:
-	v4l2_ctrl_handler_free(&sensor->ctrls);
-error_sensor:
-	mutex_destroy(&sensor->lock);
-	kfree(sensor);
-	return ret;
-}
-
-static int mt9m032_remove(struct i2c_client *client)
-{
-	struct v4l2_subdev *subdev = i2c_get_clientdata(client);
-	struct mt9m032 *sensor = to_mt9m032(subdev);
-
-	v4l2_device_unregister_subdev(subdev);
-	v4l2_ctrl_handler_free(&sensor->ctrls);
-	media_entity_cleanup(&subdev->entity);
-	mutex_destroy(&sensor->lock);
-	kfree(sensor);
-	return 0;
-}
-
-static const struct i2c_device_id mt9m032_id_table[] = {
-	{ MT9M032_NAME, 0 },
-	{ }
-};
-
-MODULE_DEVICE_TABLE(i2c, mt9m032_id_table);
-
-static struct i2c_driver mt9m032_i2c_driver = {
-	.driver = {
-		.name = MT9M032_NAME,
-	},
-	.probe = mt9m032_probe,
-	.remove = mt9m032_remove,
-	.id_table = mt9m032_id_table,
-};
-
-module_i2c_driver(mt9m032_i2c_driver);
-
-MODULE_AUTHOR("Martin Hostettler <martin@neutronstar.dyndns.org>");
-MODULE_DESCRIPTION("MT9M032 camera sensor driver");
-MODULE_LICENSE("GPL v2");