V4L/DVB (8684): Add support for Micron MT9M111 camera.

Adds support for Micron MT9M111 camera chip, with basic
features :
 - view rectangle configurable
 - some output formats (bayer8, bayer10, rgb565, rgb555, ycbycr)
 - autoexposure
 - only highpower mode context used (ie. context B)

 create mode 100644 drivers/media/video/mt9m111.c

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 967 insertions, 0 deletions

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 367666db5bfc..6ebe9f1aca04 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -809,6 +809,12 @@ config MT9M001_PCA9536_SWITCH
 	  Select this if your MT9M001 camera uses a PCA9536 I2C GPIO
 	  extender to switch between 8 and 10 bit datawidth modes
 
+config SOC_CAMERA_MT9M111
+	tristate "mt9m001 support"
+	depends on SOC_CAMERA && I2C
+	help
+	  This driver supports MT9M111 cameras from Micron
+
 config SOC_CAMERA_MT9V022
 	tristate "mt9v022 support"
 	depends on SOC_CAMERA && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index ef7c8d3ffb18..d234db7c4e06 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -137,6 +137,7 @@ obj-$(CONFIG_VIDEO_PXA27x)	+= pxa_camera.o
 obj-$(CONFIG_VIDEO_SH_MOBILE_CEU)	+= sh_mobile_ceu_camera.o
 obj-$(CONFIG_SOC_CAMERA)	+= soc_camera.o
 obj-$(CONFIG_SOC_CAMERA_MT9M001)	+= mt9m001.o
+obj-$(CONFIG_SOC_CAMERA_MT9M111)	+= mt9m111.o
 obj-$(CONFIG_SOC_CAMERA_MT9V022)	+= mt9v022.o
 obj-$(CONFIG_SOC_CAMERA_PLATFORM)	+= soc_camera_platform.o
 
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
new file mode 100644
index 000000000000..0c88e5d6dc44
--- /dev/null
+++ b/drivers/media/video/mt9m111.c
@@ -0,0 +1,960 @@
+/*
+ * Driver for MT9M111 CMOS Image Sensor from Micron
+ *
+ * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
+ *
+ * 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/videodev2.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/log2.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/soc_camera.h>
+
+/*
+ * mt9m111 i2c address is 0x5d or 0x48 (depending on SAddr pin)
+ * The platform has to define i2c_board_info and call i2c_register_board_info()
+ */
+
+/* mt9m111: Sensor register addresses */
+#define MT9M111_CHIP_VERSION		0x000
+#define MT9M111_ROW_START		0x001
+#define MT9M111_COLUMN_START		0x002
+#define MT9M111_WINDOW_HEIGHT		0x003
+#define MT9M111_WINDOW_WIDTH		0x004
+#define MT9M111_HORIZONTAL_BLANKING_B	0x005
+#define MT9M111_VERTICAL_BLANKING_B	0x006
+#define MT9M111_HORIZONTAL_BLANKING_A	0x007
+#define MT9M111_VERTICAL_BLANKING_A	0x008
+#define MT9M111_SHUTTER_WIDTH		0x009
+#define MT9M111_ROW_SPEED		0x00a
+#define MT9M111_EXTRA_DELAY		0x00b
+#define MT9M111_SHUTTER_DELAY		0x00c
+#define MT9M111_RESET			0x00d
+#define MT9M111_READ_MODE_B		0x020
+#define MT9M111_READ_MODE_A		0x021
+#define MT9M111_FLASH_CONTROL		0x023
+#define MT9M111_GREEN1_GAIN		0x02b
+#define MT9M111_BLUE_GAIN		0x02c
+#define MT9M111_RED_GAIN		0x02d
+#define MT9M111_GREEN2_GAIN		0x02e
+#define MT9M111_GLOBAL_GAIN		0x02f
+#define MT9M111_CONTEXT_CONTROL		0x0c8
+#define MT9M111_PAGE_MAP		0x0f0
+#define MT9M111_BYTE_WISE_ADDR		0x0f1
+
+#define MT9M111_RESET_SYNC_CHANGES	(1 << 15)
+#define MT9M111_RESET_RESTART_BAD_FRAME	(1 << 9)
+#define MT9M111_RESET_SHOW_BAD_FRAMES	(1 << 8)
+#define MT9M111_RESET_RESET_SOC		(1 << 5)
+#define MT9M111_RESET_OUTPUT_DISABLE	(1 << 4)
+#define MT9M111_RESET_CHIP_ENABLE	(1 << 3)
+#define MT9M111_RESET_ANALOG_STANDBY	(1 << 2)
+#define MT9M111_RESET_RESTART_FRAME	(1 << 1)
+#define MT9M111_RESET_RESET_MODE	(1 << 0)
+
+#define MT9M111_RMB_MIRROR_COLS		(1 << 1)
+#define MT9M111_RMB_MIRROR_ROWS		(1 << 0)
+#define MT9M111_CTXT_CTRL_RESTART	(1 << 15)
+#define MT9M111_CTXT_CTRL_DEFECTCOR_B	(1 << 12)
+#define MT9M111_CTXT_CTRL_RESIZE_B	(1 << 10)
+#define MT9M111_CTXT_CTRL_CTRL2_B	(1 << 9)
+#define MT9M111_CTXT_CTRL_GAMMA_B	(1 << 8)
+#define MT9M111_CTXT_CTRL_XENON_EN	(1 << 7)
+#define MT9M111_CTXT_CTRL_READ_MODE_B	(1 << 3)
+#define MT9M111_CTXT_CTRL_LED_FLASH_EN	(1 << 2)
+#define MT9M111_CTXT_CTRL_VBLANK_SEL_B	(1 << 1)
+#define MT9M111_CTXT_CTRL_HBLANK_SEL_B	(1 << 0)
+/*
+ * mt9m111: Colorpipe register addresses (0x100..0x1ff)
+ */
+#define MT9M111_OPER_MODE_CTRL		0x106
+#define MT9M111_OUTPUT_FORMAT_CTRL	0x108
+#define MT9M111_REDUCER_XZOOM_B		0x1a0
+#define MT9M111_REDUCER_XSIZE_B		0x1a1
+#define MT9M111_REDUCER_YZOOM_B		0x1a3
+#define MT9M111_REDUCER_YSIZE_B		0x1a4
+#define MT9M111_REDUCER_XZOOM_A		0x1a6
+#define MT9M111_REDUCER_XSIZE_A		0x1a7
+#define MT9M111_REDUCER_YZOOM_A		0x1a9
+#define MT9M111_REDUCER_YSIZE_A		0x1aa
+
+#define MT9M111_OUTPUT_FORMAT_CTRL2_A	0x13a
+#define MT9M111_OUTPUT_FORMAT_CTRL2_B	0x19b
+
+#define MT9M111_OPMODE_AUTOEXPO_EN	(1 << 14)
+
+
+#define MT9M111_OUTFMT_PROCESSED_BAYER	(1 << 14)
+#define MT9M111_OUTFMT_BYPASS_IFP	(1 << 10)
+#define MT9M111_OUTFMT_INV_PIX_CLOCK	(1 << 9)
+#define MT9M111_OUTFMT_RGB		(1 << 8)
+#define MT9M111_OUTFMT_RGB565		(0x0 << 6)
+#define MT9M111_OUTFMT_RGB555		(0x1 << 6)
+#define MT9M111_OUTFMT_RGB444x		(0x2 << 6)
+#define MT9M111_OUTFMT_RGBx444		(0x3 << 6)
+#define MT9M111_OUTFMT_TST_RAMP_OFF	(0x0 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_COL	(0x1 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_ROW	(0x2 << 4)
+#define MT9M111_OUTFMT_TST_RAMP_FRAME	(0x3 << 4)
+#define MT9M111_OUTFMT_SHIFT_3_UP	(1 << 3)
+#define MT9M111_OUTFMT_AVG_CHROMA	(1 << 2)
+#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y	(1 << 1)
+#define MT9M111_OUTFMT_SWAP_RGB_EVEN	(1 << 1)
+#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr	(1 << 0)
+/*
+ * mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
+ */
+
+#define reg_read(reg) mt9m111_reg_read(icd, MT9M111_##reg)
+#define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
+#define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
+#define reg_clear(reg, val) mt9m111_reg_clear(icd, MT9M111_##reg, (val))
+
+#define MT9M111_MIN_DARK_ROWS	8
+#define MT9M111_MIN_DARK_COLS	24
+#define MT9M111_MAX_HEIGHT	1024
+#define MT9M111_MAX_WIDTH	1280
+
+#define COL_FMT(_name, _depth, _fourcc, _colorspace) \
+	{ .name = _name, .depth = _depth, .fourcc = _fourcc, \
+	.colorspace = _colorspace }
+#define RGB_FMT(_name, _depth, _fourcc) \
+	COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
+
+static const struct soc_camera_data_format mt9m111_colour_formats[] = {
+	COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
+	RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
+	RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
+	RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
+	RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
+};
+
+enum mt9m111_context {
+	HIGHPOWER = 0,
+	LOWPOWER,
+};
+
+struct mt9m111 {
+	struct i2c_client *client;
+	struct soc_camera_device icd;
+	int model;	/* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
+	enum mt9m111_context context;
+	unsigned int left, top, width, height;
+	u32 pixfmt;
+	unsigned char autoexposure;
+	unsigned char datawidth;
+	unsigned int powered:1;
+	unsigned int hflip:1;
+	unsigned int vflip:1;
+	unsigned int swap_rgb_even_odd:1;
+	unsigned int swap_rgb_red_blue:1;
+	unsigned int swap_yuv_y_chromas:1;
+	unsigned int swap_yuv_cb_cr:1;
+};
+
+static int reg_page_map_set(struct i2c_client *client, const u16 reg)
+{
+	int ret;
+	u16 page;
+	static int lastpage = -1;	/* PageMap cache value */
+
+	page = (reg >> 8);
+	if (page == lastpage)
+		return 0;
+	if (page > 2)
+		return -EINVAL;
+
+	ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
+	if (ret >= 0)
+		lastpage = page;
+	return ret;
+}
+
+static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	struct i2c_client *client = mt9m111->client;
+	int ret;
+
+	ret = reg_page_map_set(client, reg);
+	if (!ret)
+		ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
+
+	dev_dbg(&icd->dev, "read  reg.%03x -> %04x\n", reg, ret);
+	return ret;
+}
+
+static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
+			     const u16 data)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	struct i2c_client *client = mt9m111->client;
+	int ret;
+
+	ret = reg_page_map_set(client, reg);
+	if (ret >= 0)
+		ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
+						swab16(data));
+	dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
+	return ret;
+}
+
+static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
+			   const u16 data)
+{
+	int ret;
+
+	ret = mt9m111_reg_read(icd, reg);
+	if (ret >= 0)
+		ret = mt9m111_reg_write(icd, reg, ret | data);
+	return ret;
+}
+
+static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
+			     const u16 data)
+{
+	int ret;
+
+	ret = mt9m111_reg_read(icd, reg);
+	return mt9m111_reg_write(icd, reg, ret & ~data);
+}
+
+static int mt9m111_set_context(struct soc_camera_device *icd,
+			       enum mt9m111_context ctxt)
+{
+	int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
+		| MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
+		| MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
+		| MT9M111_CTXT_CTRL_VBLANK_SEL_B
+		| MT9M111_CTXT_CTRL_HBLANK_SEL_B;
+	int valA = MT9M111_CTXT_CTRL_RESTART;
+
+	if (ctxt == HIGHPOWER)
+		return reg_write(CONTEXT_CONTROL, valB);
+	else
+		return reg_write(CONTEXT_CONTROL, valA);
+}
+
+static int mt9m111_setup_rect(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret = 0, is_raw_format;
+	int width = mt9m111->width;
+	int height = mt9m111->height;
+
+	if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
+	    || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
+		is_raw_format = 1;
+	else
+		is_raw_format = 0;
+
+	if (ret >= 0)
+		ret = reg_write(COLUMN_START, mt9m111->left);
+	if (ret >= 0)
+		ret = reg_write(ROW_START, mt9m111->top);
+
+	if (is_raw_format) {
+		if (ret >= 0)
+			ret = reg_write(WINDOW_WIDTH, width);
+		if (ret >= 0)
+			ret = reg_write(WINDOW_HEIGHT, height);
+	} else {
+		if (ret >= 0)
+			ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_XSIZE_B, width);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_YSIZE_B, height);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_XSIZE_A, width);
+		if (ret >= 0)
+			ret = reg_write(REDUCER_YSIZE_A, height);
+	}
+
+	return ret;
+}
+
+static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
+{
+	int ret;
+
+	ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
+	if (ret >= 0)
+		ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
+	return ret;
+}
+
+static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
+{
+	return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
+}
+
+static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
+{
+
+	return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
+}
+
+static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int val = 0;
+
+	if (mt9m111->swap_rgb_red_blue)
+		val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
+	if (mt9m111->swap_rgb_even_odd)
+		val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
+	val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
+
+	return mt9m111_setup_pixfmt(icd, val);
+}
+
+static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int val = 0;
+
+	if (mt9m111->swap_rgb_red_blue)
+		val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
+	if (mt9m111->swap_rgb_even_odd)
+		val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
+	val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
+
+	return mt9m111_setup_pixfmt(icd, val);
+}
+
+static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int val = 0;
+
+	if (mt9m111->swap_yuv_cb_cr)
+		val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
+	if (mt9m111->swap_yuv_y_chromas)
+		val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
+
+	return mt9m111_setup_pixfmt(icd, val);
+}
+
+static int mt9m111_enable(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret;
+
+	ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
+	if (ret >= 0)
+		mt9m111->powered = 1;
+	return ret;
+}
+
+static int mt9m111_disable(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret;
+
+	ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
+	if (ret >= 0)
+		mt9m111->powered = 0;
+	return ret;
+}
+
+static int mt9m111_reset(struct soc_camera_device *icd)
+{
+	int ret;
+
+	ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
+	if (ret >= 0)
+		ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
+	if (ret >= 0)
+		ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
+				| MT9M111_RESET_RESET_SOC);
+	return ret;
+}
+
+static int mt9m111_start_capture(struct soc_camera_device *icd)
+{
+	return 0;
+}
+
+static int mt9m111_stop_capture(struct soc_camera_device *icd)
+{
+	return 0;
+}
+
+static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
+{
+	return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
+		SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
+		SOCAM_DATAWIDTH_8;
+}
+
+static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
+{
+	return 0;
+}
+
+static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret = 0;
+
+	switch (pixfmt) {
+	case V4L2_PIX_FMT_SBGGR8:
+		ret = mt9m111_setfmt_bayer8(icd);
+		break;
+	case V4L2_PIX_FMT_SBGGR16:
+		ret = mt9m111_setfmt_bayer10(icd);
+		break;
+	case V4L2_PIX_FMT_RGB555:
+		ret = mt9m111_setfmt_rgb555(icd);
+		break;
+	case V4L2_PIX_FMT_RGB565:
+		ret = mt9m111_setfmt_rgb565(icd);
+		break;
+	case V4L2_PIX_FMT_YUYV:
+		ret = mt9m111_setfmt_yuv(icd);
+		break;
+	default:
+		dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
+		ret = -EINVAL;
+	}
+
+	if (ret >= 0)
+		mt9m111->pixfmt = pixfmt;
+
+	return ret;
+}
+
+static int mt9m111_set_fmt_cap(struct soc_camera_device *icd,
+			       __u32 pixfmt, struct v4l2_rect *rect)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret = 0;
+
+	mt9m111->left = rect->left;
+	mt9m111->top = rect->top;
+	mt9m111->width = rect->width;
+	mt9m111->height = rect->height;
+
+	dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
+		__func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width,
+		mt9m111->height);
+
+	ret = mt9m111_setup_rect(icd);
+	if (ret >= 0)
+		ret = mt9m111_set_pixfmt(icd, pixfmt);
+	return ret < 0 ? ret : 0;
+}
+
+static int mt9m111_try_fmt_cap(struct soc_camera_device *icd,
+			       struct v4l2_format *f)
+{
+	if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
+		f->fmt.pix.height = MT9M111_MAX_HEIGHT;
+	if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
+		f->fmt.pix.width = MT9M111_MAX_WIDTH;
+
+	return 0;
+}
+
+static int mt9m111_get_chip_id(struct soc_camera_device *icd,
+			       struct v4l2_chip_ident *id)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+	if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+		return -EINVAL;
+
+	if (id->match_chip != mt9m111->client->addr)
+		return -ENODEV;
+
+	id->ident	= mt9m111->model;
+	id->revision	= 0;
+
+	return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int mt9m111_get_register(struct soc_camera_device *icd,
+				struct v4l2_register *reg)
+{
+	int val;
+
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+	if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+		return -EINVAL;
+	if (reg->match_chip != mt9m111->client->addr)
+		return -ENODEV;
+
+	val = mt9m111_reg_read(icd, reg->reg);
+	reg->val = (u64)val;
+
+	if (reg->val > 0xffff)
+		return -EIO;
+
+	return 0;
+}
+
+static int mt9m111_set_register(struct soc_camera_device *icd,
+				struct v4l2_register *reg)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+	if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
+		return -EINVAL;
+
+	if (reg->match_chip != mt9m111->client->addr)
+		return -ENODEV;
+
+	if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
+		return -EIO;
+
+	return 0;
+}
+#endif
+
+static const struct v4l2_queryctrl mt9m111_controls[] = {
+	{
+		.id		= V4L2_CID_VFLIP,
+		.type		= V4L2_CTRL_TYPE_BOOLEAN,
+		.name		= "Flip Verticaly",
+		.minimum	= 0,
+		.maximum	= 1,
+		.step		= 1,
+		.default_value	= 0,
+	}, {
+		.id		= V4L2_CID_HFLIP,
+		.type		= V4L2_CTRL_TYPE_BOOLEAN,
+		.name		= "Flip Horizontaly",
+		.minimum	= 0,
+		.maximum	= 1,
+		.step		= 1,
+		.default_value	= 0,
+	}, {	/* gain = 1/32*val (=>gain=1 if val==32) */
+		.id		= V4L2_CID_GAIN,
+		.type		= V4L2_CTRL_TYPE_INTEGER,
+		.name		= "Gain",
+		.minimum	= 0,
+		.maximum	= 63 * 2 * 2,
+		.step		= 1,
+		.default_value	= 32,
+		.flags		= V4L2_CTRL_FLAG_SLIDER,
+	}, {
+		.id		= V4L2_CID_EXPOSURE_AUTO,
+		.type		= V4L2_CTRL_TYPE_BOOLEAN,
+		.name		= "Auto Exposure",
+		.minimum	= 0,
+		.maximum	= 1,
+		.step		= 1,
+		.default_value	= 1,
+	}
+};
+
+static int mt9m111_video_probe(struct soc_camera_device *);
+static void mt9m111_video_remove(struct soc_camera_device *);
+static int mt9m111_get_control(struct soc_camera_device *,
+			       struct v4l2_control *);
+static int mt9m111_set_control(struct soc_camera_device *,
+			       struct v4l2_control *);
+static int mt9m111_resume(struct soc_camera_device *icd);
+static int mt9m111_init(struct soc_camera_device *icd);
+static int mt9m111_release(struct soc_camera_device *icd);
+
+static struct soc_camera_ops mt9m111_ops = {
+	.owner			= THIS_MODULE,
+	.probe			= mt9m111_video_probe,
+	.remove			= mt9m111_video_remove,
+	.init			= mt9m111_init,
+	.resume			= mt9m111_resume,
+	.release		= mt9m111_release,
+	.start_capture		= mt9m111_start_capture,
+	.stop_capture		= mt9m111_stop_capture,
+	.set_fmt_cap		= mt9m111_set_fmt_cap,
+	.try_fmt_cap		= mt9m111_try_fmt_cap,
+	.query_bus_param	= mt9m111_query_bus_param,
+	.set_bus_param		= mt9m111_set_bus_param,
+	.controls		= mt9m111_controls,
+	.num_controls		= ARRAY_SIZE(mt9m111_controls),
+	.get_control		= mt9m111_get_control,
+	.set_control		= mt9m111_set_control,
+	.get_chip_id		= mt9m111_get_chip_id,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.get_register		= mt9m111_get_register,
+	.set_register		= mt9m111_set_register,
+#endif
+};
+
+static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret;
+
+	if (mt9m111->context == HIGHPOWER) {
+		if (flip)
+			ret = reg_set(READ_MODE_B, mask);
+		else
+			ret = reg_clear(READ_MODE_B, mask);
+	} else {
+		if (flip)
+			ret = reg_set(READ_MODE_A, mask);
+		else
+			ret = reg_clear(READ_MODE_A, mask);
+	}
+
+	return ret;
+}
+
+static int mt9m111_get_global_gain(struct soc_camera_device *icd)
+{
+	unsigned int data, gain;
+
+	data = reg_read(GLOBAL_GAIN);
+	if (data >= 0)
+		gain = ((data & (1 << 10)) * 2)
+			| ((data & (1 << 9)) * 2)
+			| (data & 0x2f);
+	else
+		gain = data;
+
+	return gain;
+}
+static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
+{
+	u16 val;
+
+	if (gain > 63 * 2 * 2)
+		return -EINVAL;
+
+	icd->gain = gain;
+	if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
+		val = (1 << 10) | (1 << 9) | (gain / 4);
+	else if ((gain >= 64) && (gain < 64 * 2))
+		val = (1<<9) | (gain / 2);
+	else
+		val = gain;
+
+	return reg_write(GLOBAL_GAIN, val);
+}
+
+static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret;
+
+	if (on)
+		ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
+	else
+		ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
+
+	if (ret >= 0)
+		mt9m111->autoexposure = on;
+
+	return ret;
+}
+static int mt9m111_get_control(struct soc_camera_device *icd,
+			       struct v4l2_control *ctrl)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int data;
+
+	switch (ctrl->id) {
+	case V4L2_CID_VFLIP:
+		if (mt9m111->context == HIGHPOWER)
+			data = reg_read(READ_MODE_B);
+		else
+			data = reg_read(READ_MODE_A);
+
+		if (data < 0)
+			return -EIO;
+		ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
+		break;
+	case V4L2_CID_HFLIP:
+		if (mt9m111->context == HIGHPOWER)
+			data = reg_read(READ_MODE_B);
+		else
+			data = reg_read(READ_MODE_A);
+
+		if (data < 0)
+			return -EIO;
+		ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
+		break;
+	case V4L2_CID_GAIN:
+		data = mt9m111_get_global_gain(icd);
+		if (data < 0)
+			return data;
+		ctrl->value = data;
+		break;
+	case V4L2_CID_EXPOSURE_AUTO:
+		ctrl->value = mt9m111->autoexposure;
+		break;
+	}
+	return 0;
+}
+
+static int mt9m111_set_control(struct soc_camera_device *icd,
+			       struct v4l2_control *ctrl)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	const struct v4l2_queryctrl *qctrl;
+	int ret = 0;
+
+	qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
+
+	if (!qctrl)
+		return -EINVAL;
+
+	switch (ctrl->id) {
+	case V4L2_CID_VFLIP:
+		mt9m111->vflip = ctrl->value;
+		ret = mt9m111_set_flip(icd, ctrl->value,
+					MT9M111_RMB_MIRROR_ROWS);
+		break;
+	case V4L2_CID_HFLIP:
+		mt9m111->hflip = ctrl->value;
+		ret = mt9m111_set_flip(icd, ctrl->value,
+					MT9M111_RMB_MIRROR_COLS);
+		break;
+	case V4L2_CID_GAIN:
+		ret = mt9m111_set_global_gain(icd, ctrl->value);
+		break;
+	case V4L2_CID_EXPOSURE_AUTO:
+		ret =  mt9m111_set_autoexposure(icd, ctrl->value);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret < 0 ? -EIO : 0;
+}
+
+int mt9m111_restore_state(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+	mt9m111_set_context(icd, mt9m111->context);
+	mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
+	mt9m111_setup_rect(icd);
+	mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
+	mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
+	mt9m111_set_global_gain(icd, icd->gain);
+	mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
+	return 0;
+}
+
+static int mt9m111_resume(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret = 0;
+
+	if (mt9m111->powered) {
+		ret = mt9m111_enable(icd);
+		if (ret >= 0)
+			mt9m111_reset(icd);
+		if (ret >= 0)
+			mt9m111_restore_state(icd);
+	}
+	return ret;
+}
+
+static int mt9m111_init(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	int ret;
+
+	mt9m111->context = HIGHPOWER;
+	ret = mt9m111_enable(icd);
+	if (ret >= 0)
+		mt9m111_reset(icd);
+	if (ret >= 0)
+		mt9m111_set_context(icd, mt9m111->context);
+	if (ret >= 0)
+		mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
+	if (ret < 0)
+		dev_err(&icd->dev, "mt9m111 init failed: %d\n", ret);
+	return ret ? -EIO : 0;
+}
+
+static int mt9m111_release(struct soc_camera_device *icd)
+{
+	int ret;
+
+	ret = mt9m111_disable(icd);
+	if (ret < 0)
+		dev_err(&icd->dev, "mt9m111 release failed: %d\n", ret);
+
+	return ret ? -EIO : 0;
+}
+
+/*
+ * Interface active, can use i2c. If it fails, it can indeed mean, that
+ * this wasn't our capture interface, so, we wait for the right one
+ */
+static int mt9m111_video_probe(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+	s32 data;
+	int ret;
+
+	/*
+	 * We must have a parent by now. And it cannot be a wrong one.
+	 * So this entire test is completely redundant.
+	 */
+	if (!icd->dev.parent ||
+	    to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
+		return -ENODEV;
+
+	ret = mt9m111_enable(icd);
+	if (ret)
+		goto ei2c;
+	ret = mt9m111_reset(icd);
+	if (ret)
+		goto ei2c;
+
+	data = reg_read(CHIP_VERSION);
+
+	switch (data) {
+	case 0x143a:
+		mt9m111->model = V4L2_IDENT_MT9M111;
+		icd->formats = mt9m111_colour_formats;
+		icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
+		break;
+	default:
+		ret = -ENODEV;
+		dev_err(&icd->dev,
+			"No MT9M111 chip detected, register read %x\n", data);
+		goto ei2c;
+	}
+
+	dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n");
+
+	ret = soc_camera_video_start(icd);
+	if (ret)
+		goto eisis;
+
+	mt9m111->autoexposure = 1;
+
+	mt9m111->swap_rgb_even_odd = 1;
+	mt9m111->swap_rgb_red_blue = 1;
+
+	return 0;
+eisis:
+ei2c:
+	return ret;
+}
+
+static void mt9m111_video_remove(struct soc_camera_device *icd)
+{
+	struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+
+	dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
+		mt9m111->icd.dev.parent, mt9m111->icd.vdev);
+	soc_camera_video_stop(&mt9m111->icd);
+}
+
+static int mt9m111_probe(struct i2c_client *client,
+			 const struct i2c_device_id *did)
+{
+	struct mt9m111 *mt9m111;
+	struct soc_camera_device *icd;
+	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+	struct soc_camera_link *icl = client->dev.platform_data;
+	int ret;
+
+	if (!icl) {
+		dev_err(&client->dev, "MT9M111 driver needs platform data\n");
+		return -EINVAL;
+	}
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
+		dev_warn(&adapter->dev,
+			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
+		return -EIO;
+	}
+
+	mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
+	if (!mt9m111)
+		return -ENOMEM;
+
+	mt9m111->client = client;
+	i2c_set_clientdata(client, mt9m111);
+
+	/* Second stage probe - when a capture adapter is there */
+	icd 		= &mt9m111->icd;
+	icd->ops	= &mt9m111_ops;
+	icd->control	= &client->dev;
+	icd->x_min	= MT9M111_MIN_DARK_COLS;
+	icd->y_min	= MT9M111_MIN_DARK_ROWS;
+	icd->x_current	= icd->x_min;
+	icd->y_current	= icd->y_min;
+	icd->width_min	= MT9M111_MIN_DARK_ROWS;
+	icd->width_max	= MT9M111_MAX_WIDTH;
+	icd->height_min	= MT9M111_MIN_DARK_COLS;
+	icd->height_max	= MT9M111_MAX_HEIGHT;
+	icd->y_skip_top	= 0;
+	icd->iface	= icl->bus_id;
+
+	ret = soc_camera_device_register(icd);
+	if (ret)
+		goto eisdr;
+	return 0;
+
+eisdr:
+	kfree(mt9m111);
+	return ret;
+}
+
+static int mt9m111_remove(struct i2c_client *client)
+{
+	struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
+	soc_camera_device_unregister(&mt9m111->icd);
+	kfree(mt9m111);
+
+	return 0;
+}
+
+static const struct i2c_device_id mt9m111_id[] = {
+	{ "mt9m111", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, mt9m111_id);
+
+static struct i2c_driver mt9m111_i2c_driver = {
+	.driver = {
+		.name = "mt9m111",
+	},
+	.probe		= mt9m111_probe,
+	.remove		= mt9m111_remove,
+	.id_table	= mt9m111_id,
+};
+
+static int __init mt9m111_mod_init(void)
+{
+	return i2c_add_driver(&mt9m111_i2c_driver);
+}
+
+static void __exit mt9m111_mod_exit(void)
+{
+	i2c_del_driver(&mt9m111_i2c_driver);
+}
+
+module_init(mt9m111_mod_init);
+module_exit(mt9m111_mod_exit);
+
+MODULE_DESCRIPTION("Micron MT9M111 Camera driver");
+MODULE_AUTHOR("Robert Jarzmik");
+MODULE_LICENSE("GPL");