diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 4498b94..581a0f9 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -746,6 +746,8 @@ config VIDEO_NOON010PC30
 	---help---
 	  This driver supports NOON010PC30 CIF camera from Siliconfile
 
+source "drivers/media/video/m5mols/Kconfig"
+
 config VIDEO_OMAP3
 	tristate "OMAP 3 Camera support (EXPERIMENTAL)"
 	select OMAP_IOMMU
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index ace5d8b..a65458b 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
 obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
 obj-$(CONFIG_VIDEO_SR030PC30)	+= sr030pc30.o
 obj-$(CONFIG_VIDEO_NOON010PC30)	+= noon010pc30.o
+obj-$(CONFIG_VIDEO_M5MOLS)	+= m5mols/
 
 obj-$(CONFIG_SOC_CAMERA_IMX074)		+= imx074.o
 obj-$(CONFIG_SOC_CAMERA_MT9M001)	+= mt9m001.o
diff --git a/drivers/media/video/m5mols/Kconfig b/drivers/media/video/m5mols/Kconfig
new file mode 100644
index 0000000..220282b
--- /dev/null
+++ b/drivers/media/video/m5mols/Kconfig
@@ -0,0 +1,5 @@
+config VIDEO_M5MOLS
+	tristate "Fujitsu M-5MOLS 8MP sensor support"
+	depends on I2C && VIDEO_V4L2
+	---help---
+	  This driver supports Fujitsu M-5MOLS camera sensor with ISP
diff --git a/drivers/media/video/m5mols/Makefile b/drivers/media/video/m5mols/Makefile
new file mode 100644
index 0000000..b5d19bf
--- /dev/null
+++ b/drivers/media/video/m5mols/Makefile
@@ -0,0 +1,3 @@
+m5mols-objs	:= m5mols_core.o m5mols_controls.o
+
+obj-$(CONFIG_VIDEO_M5MOLS)		+= m5mols.o
diff --git a/drivers/media/video/m5mols/m5mols.h b/drivers/media/video/m5mols/m5mols.h
new file mode 100644
index 0000000..fa36536
--- /dev/null
+++ b/drivers/media/video/m5mols/m5mols.h
@@ -0,0 +1,251 @@
+/*
+ * Header for M-5MOLS 8M Pixel camera sensor with ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd
+ * Author: HeungJun Kim, riverful.kim@samsung.com
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd
+ * Author: Dongsoo Nathaniel Kim, dongsoo45.kim@samsung.com
+ *
+ * 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.
+ */
+
+#ifndef M5MOLS_H
+#define M5MOLS_H
+
+#include <media/v4l2-subdev.h>
+#include "m5mols_reg.h"
+
+extern int m5mols_debug;
+
+enum m5mols_mode {
+	MODE_SYSINIT,
+	MODE_PARAM,
+	MODE_MONITOR,
+	MODE_UNKNOWN,
+};
+
+enum m5mols_status {
+	STATUS_SYSINIT,
+	STATUS_PARAM,
+	STATUS_MONITOR,
+	STATUS_AUTO_FOCUS,
+	STATUS_FD,			/* Face Detection */
+	STATUS_DC,			/* Dual Capture */
+	STATUS_SC,			/* Single Capture */
+	STATUS_PREVIEW,
+	STATUS_UNKNOWN,
+};
+
+enum m5mols_i2c_size {
+	I2C_8BIT	= 1,
+	I2C_16BIT	= 2,
+	I2C_32BIT	= 4,
+	I2C_MAX		= I2C_32BIT,
+};
+
+enum m5mols_fps {
+	M5MOLS_FPS_AUTO	= 0,
+	M5MOLS_FPS_10	= 10,
+	M5MOLS_FPS_12	= 12,
+	M5MOLS_FPS_15	= 15,
+	M5MOLS_FPS_20	= 20,
+	M5MOLS_FPS_21	= 21,
+	M5MOLS_FPS_22	= 22,
+	M5MOLS_FPS_23	= 23,
+	M5MOLS_FPS_24	= 24,
+	M5MOLS_FPS_30	= 30,
+	M5MOLS_FPS_MAX	= M5MOLS_FPS_30,
+};
+
+enum m5mols_res_type {
+	M5MOLS_RES_MON,
+	M5MOLS_RES_MAX,
+};
+
+struct m5mols_resolution {
+	u8			value;
+	enum m5mols_res_type	type;
+	u16			width;
+	u16			height;
+};
+
+struct m5mols_format {
+	enum v4l2_mbus_pixelcode code;
+	enum v4l2_colorspace colorspace;
+};
+
+/* version maximum counts = version values + version strings + AF version */
+#define VER_STR_MAX		22
+#define VER_MAX			(10 + VER_STR_MAX + 1)
+
+struct m5mols_version {
+	u8	ctm_code;	/* customer code - address offset 0x0 */
+	u8	pj_code;	/* project code - address offset 0x1 */
+	u16	fw;		/* firmware version - offset 0x2, 0x3 */
+	u16	hw;		/* hardware version - offset 0x4, 0x5 */
+	u16	parm;		/* parameter version - offset 0x6, 0x7 */
+	u16	awb;		/* AWB version - offset 0x8, 0x9 */
+	u8	str[VER_STR_MAX];	/* manufacturer & packging vendor */
+	u8	af;		/* AF version */
+};
+
+struct m5mols_info {
+	struct v4l2_subdev		sd;
+	struct v4l2_mbus_framefmt	fmt[M5MOLS_RES_MAX];
+	struct v4l2_fract		tpf;
+	enum v4l2_mbus_pixelcode	code;		/* last setted. */
+	const struct m5mols_platform_data	*pdata;
+
+	/* additional power function, like GPIO or etc. */
+	int (*set_power)(struct device *dev, int on);
+	struct m5mols_version		ver;
+	struct work_struct		work_irq;
+	struct work_struct		work_af;
+	bool				poweron;
+
+	/* it is used when want to be called only once after probing */
+	bool				do_once;
+
+	/* v4l2 control clusters */
+	struct v4l2_ctrl_handler	handle;
+	struct {
+		struct v4l2_ctrl	*autoexposure;
+		struct v4l2_ctrl	*exposure;
+	};
+	struct v4l2_ctrl		*autowb;
+	struct v4l2_ctrl		*colorfx;
+	struct v4l2_ctrl		*saturation;
+	struct v4l2_ctrl		*zoom;
+	struct v4l2_ctrl		*autofocus;
+
+	/* control & status variables */
+	bool				lock_ae;
+	bool				lock_awb;
+	bool				focusing;
+	bool				streaming;
+	enum m5mols_mode		mode;
+	enum m5mols_mode		mode_backup;
+	enum m5mols_status		status;
+
+	/* resolution size/fps preset variables */
+	u8				res_preset;
+	u8				fps_preset;
+};
+
+/* I2C functions - referenced by below I2C helper functions */
+int m5mols_read_reg(struct v4l2_subdev *sd, enum m5mols_i2c_size size,
+		u8 category, u8 cmd, u32 *val);
+int m5mols_write_reg(struct v4l2_subdev *sd, enum m5mols_i2c_size size,
+		u8 category, u8 cmd, u32 val);
+int m5mols_check_busy(struct v4l2_subdev *sd,
+		u8 category, u8 cmd, u32 value);
+
+/* The system mode & status functions */
+void m5mols_show_mode(struct v4l2_subdev *sd);
+int m5mols_set_mode(struct v4l2_subdev *sd, enum m5mols_mode mode);
+enum m5mols_status m5mols_get_status(struct v4l2_subdev *sd);
+
+/* The utility functions */
+int get_res_preset(struct v4l2_subdev *sd, u16 width, u16 height,
+		enum m5mols_res_type type);
+
+/* The externing camera control functions */
+int m5mols_lock_ae(struct m5mols_info *info, bool lock);
+int m5mols_lock_awb(struct m5mols_info *info, bool lock);
+void m5mols_af_work(struct work_struct *work);
+int m5mols_set_ctrl(struct v4l2_ctrl *ctrl);
+
+/* helper functions */
+static inline struct m5mols_info *to_m5mols(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct m5mols_info, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+	return &container_of(ctrl->handler, struct m5mols_info, handle)->sd;
+}
+
+static inline bool is_streaming(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	return info->streaming;
+}
+
+static inline bool is_powerup(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	return info->poweron;
+}
+
+static inline int __must_check i2c_w8_system(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_SYSTEM, cmd, val);
+}
+
+static inline int __must_check i2c_w8_param(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_PARAM, cmd, val);
+}
+
+static inline int __must_check i2c_w8_mon(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_MONITOR, cmd, val);
+}
+
+static inline int __must_check i2c_w8_ae(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_AE, cmd, val);
+}
+
+static inline int __must_check i2c_w16_ae(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_16BIT, CAT_AE, cmd, val);
+}
+
+static inline int __must_check i2c_w8_wb(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_WB, cmd, val);
+}
+
+static inline int __must_check i2c_w8_lens(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_LENS, cmd, val);
+}
+
+static inline int __must_check i2c_w8_flash(struct v4l2_subdev *sd,
+		u8 cmd, u32 val)
+{
+	return m5mols_write_reg(sd, I2C_8BIT, CAT_FLASH, cmd, val);
+}
+
+static inline int __must_check i2c_r8_system(struct v4l2_subdev *sd,
+		u8 cmd, u32 *val)
+{
+	return m5mols_read_reg(sd, I2C_8BIT, CAT_SYSTEM, cmd, val);
+}
+
+static inline int __must_check i2c_r16_ae(struct v4l2_subdev *sd,
+		u8 cmd, u32 *val)
+{
+	return m5mols_read_reg(sd, I2C_16BIT, CAT_AE, cmd, val);
+}
+
+static inline int __must_check i2c_r8_lens(struct v4l2_subdev *sd,
+		u8 cmd, u32 *val)
+{
+	return m5mols_read_reg(sd, I2C_8BIT, CAT_LENS, cmd, val);
+}
+
+#endif	/* M5MOLS_H */
diff --git a/drivers/media/video/m5mols/m5mols_controls.c b/drivers/media/video/m5mols/m5mols_controls.c
new file mode 100644
index 0000000..784b764
--- /dev/null
+++ b/drivers/media/video/m5mols/m5mols_controls.c
@@ -0,0 +1,213 @@
+/*
+ * Controls for M-5MOLS 8M Pixel camera sensor with ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd
+ * Author: HeungJun Kim, riverful.kim@samsung.com
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd
+ * Author: Dongsoo Nathaniel Kim, dongsoo45.kim@samsung.com
+ *
+ * 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/i2c.h>
+#include <linux/delay.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+
+#include "m5mols.h"
+#include "m5mols_reg.h"
+
+/* The externing camera control functions */
+int m5mols_lock_ae(struct m5mols_info *info, bool lock)
+{
+	struct v4l2_subdev *sd = &info->sd;
+
+	return i2c_w8_ae(sd, CAT3_AE_LOCK, !!(info->lock_ae = lock));
+}
+
+int m5mols_lock_awb(struct m5mols_info *info, bool lock)
+{
+	struct v4l2_subdev *sd = &info->sd;
+
+	info->lock_awb = lock;
+
+	return i2c_w8_wb(sd, CAT6_AWB_LOCK, !!(info->lock_awb = lock));
+}
+
+void m5mols_af_work(struct work_struct *work)
+{
+	struct m5mols_info *info = container_of(work, struct m5mols_info,
+			work_af);
+	struct v4l2_subdev *sd = &info->sd;
+	int ret;
+
+	info->focusing = true;
+
+	/* locking AE/AWB */
+	ret = m5mols_lock_ae(info, true);
+	if (!ret)
+		ret = m5mols_lock_awb(info, true);
+	if (!ret)
+		/* First, stop AF and set the AF mode. Second, start AF. */
+		ret = i2c_w8_lens(sd, CATA_AF_EXCUTE, REG_AF_STOP);
+	if (!ret)
+		ret = i2c_w8_lens(sd, CATA_AF_MODE, REG_AF_MODE_NORMAL);
+	if (!ret)
+		ret = m5mols_check_busy(sd, CAT_LENS, CATA_AF_STATUS,
+				REG_AF_IDLE);
+	if (!ret)
+		ret = i2c_w8_lens(sd, CATA_AF_EXCUTE, REG_AF_EXE_AUTO);
+	if (!ret)
+		ret = m5mols_check_busy(sd, CAT_LENS, CATA_AF_STATUS,
+				REG_AF_SUCCESS);
+	if (!ret)
+		ret = m5mols_lock_ae(info, false);
+	if (!ret)
+		ret = m5mols_lock_awb(info, false);
+
+	/* If focus is failed, just set the focusing done */
+	info->focusing = false;
+}
+
+/* v4l2 control functions */
+static int m5mols_wb_mode(struct m5mols_info *info, struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = &info->sd;
+	int ret;
+
+	if (info->lock_awb)
+		ret = m5mols_lock_awb(info, false);
+	if (!ret)
+		ret = i2c_w8_wb(sd, CAT6_AWB_MODE, ctrl->val ?
+				REG_AWB_MODE_AUTO : REG_AWB_MODE_MANUAL);
+
+	return ret;
+}
+
+static int m5mols_exposure_mode(struct m5mols_info *info,
+		struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = &info->sd;
+	int ret;
+
+	if (info->lock_ae)
+		ret = m5mols_lock_ae(info, false);
+	if (!ret)
+		ret = i2c_w8_ae(sd, CAT3_AE_MODE,
+				(ctrl->val == V4L2_EXPOSURE_AUTO) ?
+				REG_AE_MODE_ALL : REG_AE_MODE_OFF);
+	return ret;
+}
+
+static int m5mols_exposure(struct m5mols_info *info)
+{
+	struct v4l2_subdev *sd = &info->sd;
+
+	return i2c_w16_ae(sd, CAT3_MANUAL_GAIN_MON, info->exposure->val);
+}
+
+static int m5mols_zoom(struct m5mols_info *info, struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = &info->sd;
+
+	return i2c_w8_mon(sd, CAT2_ZOOM, ctrl->val);
+}
+
+static int m5mols_set_saturation(struct m5mols_info *info,
+		struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = &info->sd;
+	static u8 m5mols_chroma_lvl[] = {
+		REG_CHROMA_LVL0, REG_CHROMA_LVL1, REG_CHROMA_LVL2,
+		REG_CHROMA_LVL3, REG_CHROMA_LVL4, REG_CHROMA_LVL5,
+		REG_CHROMA_LVL6,
+	};
+	int ret;
+
+	ret = i2c_w8_mon(sd, CAT2_CHROMA_LVL, m5mols_chroma_lvl[ctrl->val]);
+	if (!ret)
+		ret = i2c_w8_mon(sd, CAT2_CHROMA_EN, REG_CHROMA_ON);
+
+	return ret;
+}
+
+static int m5mols_set_colorfx(struct m5mols_info *info, struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = &info->sd;
+	int ret;
+
+	/* This contol uses 2 kinds of register: normal effect & color effect.
+	 * The normal effect belongs to category 1. On the other hand the color
+	 * effect belongs to category 2.
+	 *
+	 * The normal effect uses one register
+	 *	: CAT1_EFFECT
+	 * The color effect uses three register
+	 *	: CAT2_COLOR_EFFECT, CAT2_CFIXR, CAT2_CFIXB */
+
+	ret = i2c_w8_param(sd, CAT1_EFFECT,
+			ctrl->val == V4L2_COLORFX_NEGATIVE ?
+							REG_EFFECT_NEGATIVE :
+			ctrl->val == V4L2_COLORFX_EMBOSS ?
+							REG_EFFECT_EMBOSS :
+		REG_EFFECT_OFF);
+	if (!ret)
+		ret = i2c_w8_mon(sd, CAT2_COLOR_EFFECT,
+				ctrl->val == V4L2_COLORFX_SEPIA ?
+				REG_COLOR_EFFECT_ON : REG_COLOR_EFFECT_OFF);
+	if (!ret)
+		ret = i2c_w8_mon(sd, CAT2_CFIXR,
+				ctrl->val == V4L2_COLORFX_SEPIA ?
+				REG_CFIXR_SEPIA : 0);
+	if (!ret)
+		ret = i2c_w8_mon(sd, CAT2_CFIXB,
+				ctrl->val == V4L2_COLORFX_SEPIA ?
+				REG_CFIXB_SEPIA : 0);
+
+	return ret;
+}
+
+static int m5mols_af(struct m5mols_info *info, struct v4l2_ctrl *ctrl)
+{
+	if (!info->focusing)
+		schedule_work(&info->work_af);
+	return 0;
+}
+
+/* The function called by s_ctrl() */
+int m5mols_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = to_sd(ctrl);
+	struct m5mols_info *info = to_m5mols(sd);
+	int ret;
+
+	switch (ctrl->id) {
+	case V4L2_CID_ZOOM_ABSOLUTE:
+		return m5mols_zoom(info, ctrl);
+	case V4L2_CID_EXPOSURE_AUTO:
+		if (!ctrl->is_new)
+			ctrl->val = V4L2_EXPOSURE_MANUAL;
+		ret = m5mols_exposure_mode(info, ctrl);
+		if (!ret && ctrl->val == V4L2_EXPOSURE_MANUAL)
+			ret = m5mols_exposure(info);
+		return ret;
+	case V4L2_CID_AUTO_WHITE_BALANCE:
+		return m5mols_wb_mode(info, ctrl);
+	case V4L2_CID_SATURATION:
+		return m5mols_set_saturation(info, ctrl);
+	case V4L2_CID_COLORFX:
+		return m5mols_set_colorfx(info, ctrl);
+	case V4L2_CID_FOCUS_AUTO:
+		if (ctrl->val)
+			ret = m5mols_af(info, ctrl);
+		else
+			ret = i2c_w8_lens(sd, CATA_AF_EXCUTE, REG_AF_STOP);
+		return ret;
+	}
+
+	return -EINVAL;
+}
diff --git a/drivers/media/video/m5mols/m5mols_core.c b/drivers/media/video/m5mols/m5mols_core.c
new file mode 100644
index 0000000..634db1f
--- /dev/null
+++ b/drivers/media/video/m5mols/m5mols_core.c
@@ -0,0 +1,1062 @@
+/*
+ * Driver for M-5MOLS 8M Pixel camera sensor with ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd
+ * Author: HeungJun Kim, riverful.kim@samsung.com
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd
+ * Author: Dongsoo Nathaniel Kim, dongsoo45.kim@samsung.com
+ *
+ * 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/i2c.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/version.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/m5mols.h>
+
+#include "m5mols.h"
+#include "m5mols_reg.h"
+
+int m5mols_debug;
+module_param(m5mols_debug, int, 0644);
+
+#define MOD_NAME		"M5MOLS"
+#define M5MOLS_I2C_CHECK_RETRY	300
+
+/* M-5MOLS mode */
+static u8 m5mols_reg_mode[] = {
+	[MODE_SYSINIT]		= REG_MODE_SYSINIT,
+	[MODE_PARAM]		= REG_MODE_PARAM,
+	[MODE_MONITOR]		= REG_MODE_MONITOR,
+};
+
+/* M-5MOLS regulator consumer names */
+/* The DEFAULT names of power are referenced with M-5MOLS datasheet. */
+static struct regulator_bulk_data supplies[] = {
+	{
+		/* core power - 1.2v, generally at the M-5MOLS */
+		.supply		= "core",
+	}, {
+		.supply		= "dig_18",	/* digital power 1 - 1.8v */
+	}, {
+		.supply		= "d_sensor",	/* sensor power 1 - 1.8v */
+	}, {
+		.supply		= "dig_28",	/* digital power 2 - 2.8v */
+	}, {
+		.supply		= "a_sensor",	/* analog power */
+	}, {
+		.supply		= "dig_12",	/* digital power 3 - 1.2v */
+	},
+};
+
+/* M-5MOLS default format (codes, sizes, preset values) */
+static const struct v4l2_mbus_framefmt default_fmt[M5MOLS_RES_MAX] = {
+	[M5MOLS_RES_MON] = {
+		.width		= 1920,
+		.height		= 1080,
+		.code		= V4L2_MBUS_FMT_VYUY8_2X8,
+		.field		= V4L2_FIELD_NONE,
+		.colorspace	= V4L2_COLORSPACE_JPEG,
+	},
+};
+
+static const struct m5mols_format m5mols_formats[] = {
+	[M5MOLS_RES_MON] = {
+		.code		= V4L2_MBUS_FMT_VYUY8_2X8,
+		.colorspace	= V4L2_COLORSPACE_JPEG,
+	},
+};
+
+/* M-5MOLS default FPS */
+static const struct v4l2_fract default_fps = {
+	.numerator		= 1,
+	.denominator		= M5MOLS_FPS_AUTO,
+};
+
+static const struct m5mols_resolution m5mols_reg_res[] = {
+	/* monitor size */
+	{ 0x01, M5MOLS_RES_MON, 128, 96 },	/* SUB-QCIF */
+	{ 0x03, M5MOLS_RES_MON, 160, 120 },	/* QQVGA */
+	{ 0x05, M5MOLS_RES_MON, 176, 144 },	/* QCIF */
+	{ 0x06, M5MOLS_RES_MON, 176, 176 },	/* 176*176 */
+	{ 0x08, M5MOLS_RES_MON, 240, 320 },	/* 1 QVGA */
+	{ 0x09, M5MOLS_RES_MON, 320, 240 },	/* QVGA */
+	{ 0x0c, M5MOLS_RES_MON, 240, 400 },	/* l WQVGA */
+	{ 0x0d, M5MOLS_RES_MON, 400, 240 },	/* WQVGA */
+	{ 0x0e, M5MOLS_RES_MON, 352, 288 },	/* CIF */
+	{ 0x13, M5MOLS_RES_MON, 480, 360 },	/* 480*360 */
+	{ 0x15, M5MOLS_RES_MON, 640, 360 },	/* qHD */
+	{ 0x17, M5MOLS_RES_MON, 640, 480 },	/* VGA */
+	{ 0x18, M5MOLS_RES_MON, 720, 480 },	/* 720x480 */
+	{ 0x1a, M5MOLS_RES_MON, 800, 480 },	/* WVGA */
+	{ 0x1f, M5MOLS_RES_MON, 800, 600 },	/* SVGA */
+	{ 0x21, M5MOLS_RES_MON, 1280, 720 },	/* HD */
+	{ 0x25, M5MOLS_RES_MON, 1920, 1080 },	/* 1080p */
+	{ 0x29, M5MOLS_RES_MON, 3264, 2448 },	/* 8M (2.63fps@3264*2448) */
+	{ 0x30, M5MOLS_RES_MON, 320, 240 },	/* 60fps for slow motion */
+	{ 0x31, M5MOLS_RES_MON, 320, 240 },	/* 120fps for slow motion */
+	{ 0x39, M5MOLS_RES_MON, 800, 602 },	/* AHS_MON debug */
+};
+
+static u8 m5mols_reg_fps[] = {
+	[M5MOLS_FPS_AUTO]	= 0x01,
+	[M5MOLS_FPS_10]		= 0x05,
+	[M5MOLS_FPS_12]		= 0x04,
+	[M5MOLS_FPS_15]		= 0x03,
+	[M5MOLS_FPS_20]		= 0x08,
+	[M5MOLS_FPS_21]		= 0x09,
+	[M5MOLS_FPS_22]		= 0x0a,
+	[M5MOLS_FPS_23]		= 0x0b,
+	[M5MOLS_FPS_24]		= 0x07,
+	[M5MOLS_FPS_30]		= 0x02,
+};
+
+/*
+ * m5mols_swap_byte() / to_res_type() - These functions is utility.
+ *
+ * The m5mols_swap_byte() returns value swapped depends on 8/16/32 width.
+ * The value independent system. It generally is used in the I2C function.
+ */
+static u32 m5mols_swap_byte(u8 *data, enum m5mols_i2c_size size)
+{
+	if (size == I2C_8BIT)
+		return *data;
+	else if (size == I2C_16BIT)
+		return be16_to_cpu(*((u16 *)data));
+	else
+		return be32_to_cpu(*((u32 *)data));
+}
+
+static enum m5mols_res_type to_res_type(struct v4l2_subdev *sd,
+		enum v4l2_mbus_pixelcode code)
+{
+	int i = ARRAY_SIZE(m5mols_formats);
+
+	while (i--)
+		if (code == m5mols_formats[i].code)
+			break;
+	if (i < 0)
+		return M5MOLS_RES_MAX;
+	return i;
+}
+
+/*
+ * m5mols_read_reg() / m5mols_write_reg() - handle sensor's I2C communications.
+ *
+ * The I2C command packet of M-5MOLS is made up 3 kinds of I2C bytes(category,
+ * command, bytes). Reference m5mols.h.
+ *
+ * The packet is needed 2, when M-5MOLS is read through I2C.
+ * The packet is needed 1, when M-5MOLS is written through I2C.
+ *
+ * I2C packet common order(including both reading/writing)
+ *   1st : size (data size + 4)
+ *   2nd : READ/WRITE (R - 0x01, W - 0x02)
+ *   3rd : Category
+ *   4th : Command
+ *
+ * I2C packet order for READING operation
+ *   5th : data real size for reading
+ *   And, read another I2C packet again, until data size.
+ *
+ * I2C packet order for WRITING operation
+ *   5th to 8th: an actual data to write
+ */
+
+#define M5MOLS_BYTE_READ	0x01
+#define M5MOLS_BYTE_WRITE	0x02
+
+int m5mols_read_reg(struct v4l2_subdev *sd,
+		enum m5mols_i2c_size size,
+		u8 category, u8 cmd, u32 *val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct i2c_msg msg[2];
+	u8 wbuf[5], rbuf[I2C_MAX + 1];
+	int ret;
+
+	if (!client->adapter)
+		return -ENODEV;
+
+	if (size != I2C_8BIT && size != I2C_16BIT && size != I2C_32BIT)
+		return -EINVAL;
+
+	/* 1st I2C operation for writing category & command. */
+	msg[0].addr = client->addr;
+	msg[0].flags = 0;
+	msg[0].len = 5;		/* 1(cmd size per bytes) + 4 */
+	msg[0].buf = wbuf;
+	wbuf[0] = 5;		/* same right above this */
+	wbuf[1] = M5MOLS_BYTE_READ;
+	wbuf[2] = category;
+	wbuf[3] = cmd;
+	wbuf[4] = size;
+
+	/* 2nd I2C operation for reading data. */
+	msg[1].addr = client->addr;
+	msg[1].flags = I2C_M_RD;
+	msg[1].len = size + 1;
+	msg[1].buf = rbuf;
+
+	usleep_range(200, 200);		/* must be for stabilization */
+
+	ret = i2c_transfer(client->adapter, msg, 2);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed READ[%d] at "
+				"cat[%02x] cmd[%02x]\n",
+				size, category, cmd);
+		return ret;
+	}
+
+	*val = m5mols_swap_byte(&rbuf[1], size);
+
+	return 0;
+}
+
+int m5mols_write_reg(struct v4l2_subdev *sd,
+		enum m5mols_i2c_size size,
+		u8 category, u8 cmd, u32 val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *cdev = &client->dev;
+	struct i2c_msg msg[1];
+	u8 wbuf[I2C_MAX + 4];
+	u32 *buf = (u32 *)&wbuf[4];
+	int ret;
+
+	if (!client->adapter)
+		return -ENODEV;
+
+	if (size != I2C_8BIT && size != I2C_16BIT && size != I2C_32BIT) {
+		dev_err(cdev, "Wrong data size\n");
+		return -EINVAL;
+	}
+
+	msg->addr = client->addr;
+	msg->flags = 0;
+	msg->len = size + 4;
+	msg->buf = wbuf;
+	wbuf[0] = size + 4;
+	wbuf[1] = M5MOLS_BYTE_WRITE;
+	wbuf[2] = category;
+	wbuf[3] = cmd;
+
+	*buf = m5mols_swap_byte((u8 *)&val, size);
+
+	usleep_range(200, 200);		/* must be for stabilization */
+
+	ret = i2c_transfer(client->adapter, msg, 1);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed WRITE[%d] at "
+				"cat[%02x] cmd[%02x], ret %d\n",
+				size, msg->buf[2], msg->buf[3], ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+int m5mols_check_busy(struct v4l2_subdev *sd, u8 category, u8 cmd, u32 value)
+{
+	u32 busy, i;
+	int ret;
+
+	for (i = 0; i < M5MOLS_I2C_CHECK_RETRY; i++) {
+
+		ret = m5mols_read_reg(sd, I2C_8BIT, category, cmd, &busy);
+		if (ret < 0)
+			return ret;
+
+		if (busy == value)	/* bingo */
+			return 0;
+	}
+
+	return -EBUSY;
+}
+
+/*
+ * m5mols_set_mode() / m5mols_show_mode() / m5mols_get_status()
+ *
+ * The sensor M-5MOLS has system mode and system status. The system mode means
+ * the M-5MOLS's state and this is changable to us. The system mode supported
+ * M-5MOLS is only 4 - System, Parameter, Monitor, Capture. But, the System
+ * mode is not able to be set by us, it's available only after powering up.
+ *
+ * On the other hand, The sensor M-5MOLS's system status is similar with the
+ * system mode, but this is not acceptable to be set by us.
+ */
+void m5mols_show_mode(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *cdev = &client->dev;
+
+	dev_info(cdev, "mode: %s\n",
+			info->mode == MODE_SYSINIT ? "System" :
+			info->mode == MODE_PARAM ? "Parameter" :
+			info->mode == MODE_MONITOR ? "Monitor" :
+			"Unknown");
+}
+
+int m5mols_set_mode(struct v4l2_subdev *sd, enum m5mols_mode mode)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	int ret;
+
+	if (mode < MODE_SYSINIT || mode > MODE_MONITOR)
+		return -EINVAL;
+
+	ret = i2c_w8_system(sd, CAT0_SYSMODE, m5mols_reg_mode[mode]);
+	if (!ret)
+		ret = m5mols_check_busy(sd, CAT_SYSTEM, CAT0_STATUS,
+				m5mols_reg_mode[mode]);
+	if (!ret)
+		info->mode = m5mols_reg_mode[mode];
+
+	return ret;
+}
+
+enum m5mols_status m5mols_get_status(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *cdev = &client->dev;
+	int ret;
+
+	ret = i2c_r8_system(sd, CAT0_STATUS, (u32 *)&info->status);
+	if (!ret)
+		dev_info(cdev, "status %s\n",
+			info->status == STATUS_SYSINIT ? "System" :
+			info->status == STATUS_PARAM ? "Parameter" :
+			info->status == STATUS_MONITOR ? "Monitor" :
+			info->status == STATUS_AUTO_FOCUS ? "Auto Focus" :
+			info->status == STATUS_FD ? "Face Detction" :
+			info->status == STATUS_DC ? "Dual Capture" :
+			info->status == STATUS_SC ? "Single Capture" :
+			info->status == STATUS_PREVIEW ? "Preview" :
+			"Unknown");
+
+	return ret;
+}
+
+/*
+ * m5mols_get_version() / m5mols_show_version()
+ *
+ * This function's role is getting M-5MOLS version including basic information
+ * version & AF & even version string. Each information is stored internal
+ * version structure.
+ */
+static int m5mols_get_version(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	union {
+		struct m5mols_version	ver;
+		u8			bytes[VER_MAX];
+	} value;
+	int ret, i;
+
+	info->ver = value.ver;
+
+	/* get from custom code version offset to AWB version offset */
+	for (i = CAT0_CUSTOMER_CODE; i <= CAT0_VERSION_AWB_L; i++) {
+		ret = i2c_r8_system(sd, i, (u32 *)&value.bytes[i]);
+		if (ret)
+			return ret;
+	}
+
+	/* get version string */
+	for (; i < VER_MAX - 1; i++)
+		ret = i2c_r8_system(sd, CAT0_VERSION_STR,
+				(u32 *)&value.bytes[i]);
+	value.bytes[i] = '\0';
+
+	/* get AF version */
+	ret = i2c_r8_lens(sd, CATA_AF_VERSION, (u32 *)&value.bytes[i]);
+	if (ret)
+		return ret;
+
+	info->ver.fw = be16_to_cpu(info->ver.fw);
+	info->ver.hw = be16_to_cpu(info->ver.hw);
+	info->ver.parm = be16_to_cpu(info->ver.parm);
+	info->ver.awb = be16_to_cpu(info->ver.awb);
+
+	return ret;
+}
+
+static void m5mols_show_version(struct v4l2_subdev *sd)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+	struct m5mols_info *info = to_m5mols(sd);
+
+	dev_info(dev, "customer code\t0x%02x\n", info->ver.ctm_code);
+	dev_info(dev, "project code\t0x%02x\n", info->ver.pj_code);
+	dev_info(dev, "firmware version\t0x%04x\n", info->ver.fw);
+	dev_info(dev, "hardware version\t0x%04x\n", info->ver.hw);
+	dev_info(dev, "parameter version\t0x%04x\n", info->ver.parm);
+	dev_info(dev, "AWB version\t0x%04x\n", info->ver.awb);
+	dev_info(dev, "AF version\t0x%04x\n", info->ver.af);
+	dev_info(dev, "Version string\t%s\n", info->ver.str);
+}
+
+/*
+ * get_res_preset() - find out M-5MOLS register value from requested resolution.
+ *
+ * @width: requested width
+ * @height: requested height
+ * @type: requested type of each modes. It supports only monitor mode now.
+ */
+int get_res_preset(struct v4l2_subdev *sd, u16 width, u16 height,
+		enum m5mols_res_type type)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(m5mols_reg_res); i++) {
+		if ((m5mols_reg_res[i].type == type) &&
+			(m5mols_reg_res[i].width == width) &&
+			(m5mols_reg_res[i].height == height))
+			break;
+	}
+
+	if (i >= ARRAY_SIZE(m5mols_reg_res))
+		return -EINVAL;
+
+	return m5mols_reg_res[i].value;
+}
+
+/*
+ * get_fps() - calc & check FPS from v4l2_captureparm, if FPS is adequate, set.
+ *
+ * In M-5MOLS case, the denominator means FPS. The values of numerator and
+ * denominator should not be minus both. If numerator is 0, it sets AUTO FPS.
+ * If numerator is not 1, it recalculates denominator. After it checks, the
+ * denominator is set to timeperframe.denominator, and used by FPS.
+ */
+static int get_fps(struct v4l2_subdev *sd,
+		struct v4l2_captureparm *parm)
+{
+	int numerator = parm->timeperframe.numerator;
+	int denominator = parm->timeperframe.denominator;
+
+	/* The denominator should be +, except 0. The numerator shoud be +. */
+	if (numerator < 0 || denominator <= 0)
+		return -EINVAL;
+
+	/* The numerator is 0, return auto fps. */
+	if (numerator == 0) {
+		parm->timeperframe.denominator = M5MOLS_FPS_AUTO;
+		return 0;
+	}
+
+	/* calc FPS(not time per frame) per 1 numerator */
+	denominator = denominator / numerator;
+
+	if (denominator < M5MOLS_FPS_AUTO || denominator > M5MOLS_FPS_MAX)
+		return -EINVAL;
+
+	if (!m5mols_reg_fps[denominator])
+		return -EINVAL;
+
+	return 0;
+}
+
+static int m5mols_g_mbus_fmt(struct v4l2_subdev *sd,
+		struct v4l2_mbus_framefmt *ffmt)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	enum m5mols_res_type res_type;
+
+	res_type = to_res_type(sd, ffmt->code);
+	if (res_type == M5MOLS_RES_MAX)
+		return -EINVAL;
+
+	*ffmt = info->fmt[res_type];
+	info->code = ffmt->code;
+
+	return 0;
+}
+
+static int m5mols_s_mbus_fmt(struct v4l2_subdev *sd,
+		struct v4l2_mbus_framefmt *ffmt)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	enum m5mols_res_type res_type;
+	int size;
+
+	res_type = to_res_type(sd, ffmt->code);
+	if (res_type == M5MOLS_RES_MAX)
+		return -EINVAL;
+
+	size = get_res_preset(sd, ffmt->width, ffmt->height, res_type);
+	if (size < 0)
+		return -EINVAL;
+
+	if (ffmt->code == m5mols_formats[M5MOLS_RES_MON].code) {
+		info->res_preset = (u8)size;
+
+		info->fmt[res_type]		= default_fmt[res_type];
+		info->fmt[res_type].width	= ffmt->width;
+		info->fmt[res_type].height	= ffmt->height;
+
+		*ffmt = info->fmt[res_type];
+		info->code = ffmt->code;
+	}
+
+	return 0;
+}
+
+static int m5mols_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index,
+			      enum v4l2_mbus_pixelcode *code)
+{
+	if (!code || index >= ARRAY_SIZE(m5mols_formats))
+		return -EINVAL;
+
+	*code = m5mols_formats[index].code;
+
+	return 0;
+}
+
+static int m5mols_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	struct v4l2_captureparm *cp = &parms->parm.capture;
+
+	if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+			parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		return -EINVAL;
+
+	cp->capability = V4L2_CAP_TIMEPERFRAME;
+	cp->timeperframe = info->tpf;
+
+	return 0;
+}
+
+static int m5mols_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	struct v4l2_captureparm *cp = &parms->parm.capture;
+	int ret;
+
+	if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+			parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+		return -EINVAL;
+
+	ret = get_fps(sd, cp);	/* set right FPS to denominator. */
+	if (!ret)
+		info->fps_preset = m5mols_reg_fps[cp->timeperframe.denominator];
+	if (!ret) {
+		cp->capability = V4L2_CAP_TIMEPERFRAME;
+		info->tpf = cp->timeperframe;
+	}
+
+	return ret;
+}
+
+static int m5mols_start_monitor(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	int ret;
+
+	ret = m5mols_set_mode(sd, MODE_PARAM);
+	if (!ret)
+		ret = i2c_w8_param(sd, CAT1_MONITOR_SIZE, info->res_preset);
+	if (!ret)
+		ret = i2c_w8_param(sd, CAT1_MONITOR_FPS, info->fps_preset);
+	if (!ret)
+		ret = m5mols_set_mode(sd, MODE_MONITOR);
+	if (!ret && info->do_once) {
+		/* After probing the driver, this should be callde once. */
+		v4l2_ctrl_handler_setup(&info->handle);
+		info->do_once = false;
+	}
+
+	return ret;
+}
+
+static int m5mols_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	int ret = -EINVAL;
+
+	/* It happens the driver using this subdev chooses the method doing
+	 * streamon/off when qbuf/dqbuf continuously. But, in the case of
+	 * M-5MOLS, it's no problem to set streaming command just once.
+	 * So, the status of streamon/off of the level of v4l2, should be
+	 * checked in here for controlling separately with no problems. */
+	if (enable && !is_streaming(sd)) {
+
+		/* streaming mode determines whether mediabus code */
+		ret = m5mols_start_monitor(sd);
+		if (!ret)
+			info->streaming = true;
+
+	} else if (!enable && is_streaming(sd)) {
+
+		/* The is_streaming() is the key to determine streamon/off. The
+		 * 'enable' has meaning depends on streaming */
+		ret = m5mols_set_mode(sd, MODE_PARAM);
+		if (!ret)
+			info->streaming = false;
+	}
+
+	return ret;
+}
+
+static const struct v4l2_subdev_video_ops m5mols_video_ops = {
+	.g_mbus_fmt		= m5mols_g_mbus_fmt,
+	.s_mbus_fmt		= m5mols_s_mbus_fmt,
+	.enum_mbus_fmt		= m5mols_enum_mbus_fmt,
+	.g_parm			= m5mols_g_parm,
+	.s_parm			= m5mols_s_parm,
+	.s_stream		= m5mols_s_stream,
+};
+
+static int m5mols_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = to_sd(ctrl);
+	struct m5mols_info *info = to_m5mols(sd);
+	int ret;
+
+	info->mode_backup = info->mode;
+
+	ret = m5mols_set_mode(sd, MODE_PARAM);
+	if (!ret)
+		ret = m5mols_set_ctrl(ctrl);
+	if (!ret)
+		ret = m5mols_set_mode(sd, info->mode_backup);
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops m5mols_ctrl_ops = {
+	.s_ctrl = m5mols_s_ctrl,
+};
+
+/*
+ * m5mols_sensor_power() - handle sensor power up/down.
+ *
+ * @enable: If it is true, power up. If is not, power down.
+ */
+static int m5mols_sensor_power(struct m5mols_info *info, bool enable)
+{
+	struct v4l2_subdev *sd = &info->sd;
+	struct i2c_client *c = v4l2_get_subdevdata(sd);
+	int ret;
+
+	if (enable) {
+		if (is_powerup(sd))
+			return 0;
+
+		/* power-on additional power */
+		if (info->set_power) {
+			ret = info->set_power(&c->dev, 1);
+			if (ret)
+				return ret;
+		}
+
+		ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
+		if (ret)
+			return ret;
+
+		gpio_set_value(info->pdata->gpio_rst, info->pdata->enable_rst);
+		usleep_range(1000, 1000);
+
+		info->poweron = true;
+
+	} else {
+		if (!is_powerup(sd))
+			return 0;
+
+		ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
+		if (ret)
+			return ret;
+
+		/* power-off additional power */
+		if (info->set_power) {
+			ret = info->set_power(&c->dev, 0);
+			if (ret)
+				return ret;
+		}
+
+		info->poweron = false;
+
+		gpio_set_value(info->pdata->gpio_rst, !info->pdata->enable_rst);
+		usleep_range(1000, 1000);
+	}
+
+	return ret;
+}
+
+/* m5mols_update_fw() - Note that m5mols_update_fw() is optional. */
+int __attribute__ ((weak)) m5mols_update_fw(struct v4l2_subdev *sd,
+		int (*set_power)(struct m5mols_info *, bool))
+{
+	return 0;
+}
+
+/*
+ * m5mols_sensor_armboot() - booting M-5MOLS internal ARM core-controller.
+ *
+ * It makes to ready M-5MOLS for I2C & MIPI interface. After it's powered up,
+ * it activates if it gets armboot command for I2C interface. After getting
+ * cmd, it must wait about least 520ms referenced by M-5MOLS datasheet.
+ */
+static int m5mols_sensor_armboot(struct v4l2_subdev *sd)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	u32 reg;
+	int ret;
+
+	/* ARM(M-5MOLS core) booting */
+	ret = i2c_w8_flash(sd, CATF_CAM_START, true);
+	if (ret < 0)
+		return ret;
+
+	msleep(520);
+	dev_dbg(&client->dev, "Success ARM Booting\n");
+
+	/* checking firmware */
+	ret = m5mols_get_version(sd);
+	if (!ret)
+		ret = m5mols_update_fw(sd, m5mols_sensor_power);
+	if (ret)
+		return ret;
+
+	m5mols_show_version(sd);
+
+	/* clear intterupt */
+	ret = i2c_r8_system(sd, CAT0_INT_FACTOR, &reg);
+	if (!ret)
+		/* Enable only AF intterupt */
+		ret = i2c_w8_system(sd, CAT0_INT_ENABLE, REG_INT_AF);
+	if (!ret)
+		ret = i2c_w8_param(sd, CAT1_DATA_INTERFACE,
+				REG_INTERFACE_MIPI);
+
+	return ret;
+}
+
+/* m5mols_init_controls - initialization for v4l2 control */
+static int m5mols_init_controls(struct m5mols_info *info)
+{
+	struct v4l2_subdev *sd = &info->sd;
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	u16 max_ex_mon;
+	int ret;
+
+	/* check minimum & maximum of M-5MOLS controls */
+	ret = i2c_r16_ae(sd, CAT3_MAX_GAIN_MON, (u32 *)&max_ex_mon);
+	if (ret)
+		return ret;
+
+	/* set the controls using v4l2 control frameworks */
+	v4l2_ctrl_handler_init(&info->handle, 7);
+
+	info->colorfx = v4l2_ctrl_new_std_menu(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_COLORFX,
+			9, 1, V4L2_COLORFX_NONE);
+	info->autoexposure = v4l2_ctrl_new_std_menu(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_EXPOSURE_AUTO,
+			1, 0, V4L2_EXPOSURE_AUTO);
+	info->exposure = v4l2_ctrl_new_std(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_EXPOSURE,
+			0, max_ex_mon, 1, (int)max_ex_mon/2);
+	info->autowb = v4l2_ctrl_new_std(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE,
+			0, 1, 1, 1);
+	info->saturation = v4l2_ctrl_new_std(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_SATURATION,
+			0, 6, 1, 3);
+	info->zoom = v4l2_ctrl_new_std(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_ZOOM_ABSOLUTE,
+			0, 70, 1, 0);
+	info->autofocus = v4l2_ctrl_new_std(&info->handle,
+			&m5mols_ctrl_ops, V4L2_CID_FOCUS_AUTO,
+			0, 1, 1, 1);
+
+	sd->ctrl_handler = &info->handle;
+	if (info->handle.error) {
+		dev_err(&client->dev, "Failed to init controls, %d\n", ret);
+		v4l2_ctrl_handler_free(&info->handle);
+		return info->handle.error;
+	}
+
+	v4l2_ctrl_cluster(2, &info->autoexposure);
+
+	return 0;
+}
+
+static int m5mols_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *cdev = &client->dev;
+	int ret;
+
+	if (on) {
+
+		/* power on sequence
+		 * 1. power on sensor - regulator & other power gpio pins.
+		 * 2. armboot armboot, checking version, etc(using I2C).
+		 * 3. init v4l2 control - settle min/max values(using I2C).
+		 * 4. set information values - default resolution/fps */
+
+		ret = m5mols_sensor_power(info, true);
+		if (!ret)
+			ret = m5mols_sensor_armboot(sd);
+		if (!ret)
+			ret = m5mols_init_controls(info);
+		if (!ret) {
+			/* setup defulat size & fps */
+			info->fmt[M5MOLS_RES_MON] = default_fmt[M5MOLS_RES_MON];
+			info->tpf = default_fps;
+		}
+
+	} else {
+
+		/* power off sequence
+		 * 1. power off AF - let the lens do the soft-landing algorithm
+		 * 2. power off sensor - force it, if failed powering off AF */
+
+		/* landing softly lens & poweroff AF. If do not soft-landing
+		 * when powering off, the lens can be damaged. */
+		ret = m5mols_set_mode(sd, MODE_MONITOR);
+		if (!ret)
+			ret = i2c_w8_lens(sd, CATA_AF_EXCUTE, REG_AF_STOP);
+		if (!ret)
+			ret = i2c_w8_lens(sd, CATA_AF_MODE, REG_AF_POWEROFF);
+		if (!ret)
+			ret = m5mols_check_busy(sd, CAT_SYSTEM, CAT0_STATUS,
+					REG_AF_IDLE);
+		if (!ret)
+			dev_info(cdev, "Success AF soft-landing lens\n");
+
+		/* Force powering off the sensor, if AF powering off is failed
+		 * or not */
+		ret = m5mols_sensor_power(info, false);
+	}
+
+	return ret;
+}
+
+static int m5mols_log_status(struct v4l2_subdev *sd)
+{
+	struct m5mols_info *info = to_m5mols(sd);
+
+	v4l2_ctrl_handler_log_status(&info->handle, sd->name);
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops m5mols_core_ops = {
+	.s_power		= m5mols_s_power,
+	.g_ctrl			= v4l2_subdev_g_ctrl,
+	.s_ctrl			= v4l2_subdev_s_ctrl,
+	.queryctrl		= v4l2_subdev_queryctrl,
+	.querymenu		= v4l2_subdev_querymenu,
+	.g_ext_ctrls		= v4l2_subdev_g_ext_ctrls,
+	.try_ext_ctrls		= v4l2_subdev_try_ext_ctrls,
+	.s_ext_ctrls		= v4l2_subdev_s_ext_ctrls,
+	.log_status		= m5mols_log_status,
+};
+
+static const struct v4l2_subdev_ops m5mols_ops = {
+	.core	= &m5mols_core_ops,
+	.video	= &m5mols_video_ops,
+};
+
+static void m5mols_irq_work(struct work_struct *work)
+{
+	struct m5mols_info *info = container_of(work, struct m5mols_info,
+			work_irq);
+	struct v4l2_subdev *sd = &info->sd;
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *cdev = &client->dev;
+	u32 reg;
+	int ret;
+
+	/* If not powering up and I2C failed, return immediately */
+	if (!is_powerup(sd) || i2c_r8_system(sd, CAT0_INT_FACTOR, &reg))
+		return;
+
+	switch (reg & REG_INT_MASK) {
+	case REG_INT_AF:
+		ret = i2c_r8_lens(sd, CATA_AF_STATUS, &reg);
+		dev_dbg(cdev, "= AF %s\n",
+				reg == REG_AF_FAIL ? "Failed" :
+				reg == REG_AF_SUCCESS ? "Success" :
+				reg == REG_AF_IDLE ? "Idle" : "Busy");
+		break;
+	case REG_INT_CAPTURE:
+	case REG_INT_ZOOM:
+	case REG_INT_FRAMESYNC:
+	case REG_INT_FD:
+	case REG_INT_LENS_INIT:
+	case REG_INT_SOUND:
+	case REG_INT_MODE:
+	default:
+		dev_dbg(cdev, "= Nothing : %02x\n", reg);
+		break;
+	};
+}
+
+static irqreturn_t m5mols_irq_handler(int irq, void *data)
+{
+	struct v4l2_subdev *sd = data;
+	struct m5mols_info *info = to_m5mols(sd);
+
+	schedule_work(&info->work_irq);
+
+	return IRQ_HANDLED;
+}
+
+static int m5mols_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	const struct m5mols_platform_data *pdata =
+		client->dev.platform_data;
+	struct m5mols_info *info;
+	struct v4l2_subdev *sd;
+	int ret;
+
+	if (pdata == NULL) {
+		dev_err(&client->dev, "No platform data\n");
+		return -EINVAL;
+	}
+
+	if (!gpio_is_valid(pdata->gpio_rst)) {
+		dev_err(&client->dev, "No valid nRST gpio pin.\n");
+		return -EINVAL;
+	}
+
+	if (!pdata->irq) {
+		dev_err(&client->dev, "Interrupt not assigned.\n");
+		return -EINVAL;
+	}
+
+	info = kzalloc(sizeof(struct m5mols_info), GFP_KERNEL);
+	if (info == NULL) {
+		dev_err(&client->dev, "Failed to allocate info\n");
+		return -ENOMEM;
+	}
+
+	info->pdata	= pdata;
+	if (info->pdata->set_power)	/* for additional power if needed. */
+		info->set_power = pdata->set_power;
+
+	ret = gpio_request(info->pdata->gpio_rst, "M5MOLS nRST");
+	if (ret) {
+		dev_err(&client->dev, "Failed to set gpio, %d\n", ret);
+		goto out_gpio;
+	}
+
+	gpio_direction_output(info->pdata->gpio_rst, !info->pdata->enable_rst);
+
+	ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies), supplies);
+	if (ret) {
+		dev_err(&client->dev, "Failed to get regulators, %d\n", ret);
+		goto out_reg;
+	}
+
+	sd = &info->sd;
+	strlcpy(sd->name, MOD_NAME, sizeof(sd->name));
+	v4l2_i2c_subdev_init(sd, client, &m5mols_ops);
+
+	INIT_WORK(&info->work_af, m5mols_af_work);
+
+	/* After calling v4l2_i2c_subdev_init() the I2C is available, and
+	 * then it's not happend the problem when issued irq & done workqueue,
+	 * and then I2C is accessed. */
+	if (info->pdata->irq) {
+		INIT_WORK(&info->work_irq, m5mols_irq_work);
+		ret = request_irq(info->pdata->irq,
+				m5mols_irq_handler,
+				IRQF_TRIGGER_RISING,
+				MOD_NAME, sd);
+		if (ret) {
+			dev_err(&client->dev,
+				"Failed to request irq: %d\n", ret);
+			goto out_irq;
+		}
+	}
+
+	info->do_once = true;
+	v4l2_dbg(1, m5mols_debug, sd, "probed m5mols driver.\n");
+
+	return 0;
+
+out_irq:
+	free_irq(info->pdata->irq, sd);
+out_reg:
+	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
+out_gpio:
+	gpio_free(info->pdata->gpio_rst);
+	kfree(info);
+
+	return ret;
+}
+
+static int m5mols_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct m5mols_info *info = to_m5mols(sd);
+
+	v4l2_device_unregister_subdev(sd);
+	v4l2_ctrl_handler_free(&info->handle);
+	free_irq(info->pdata->irq, sd);
+
+	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
+	gpio_free(info->pdata->gpio_rst);
+	kfree(info);
+
+	info->do_once = false;
+	v4l2_dbg(1, m5mols_debug, sd, "removed m5mols driver.\n");
+
+	return 0;
+}
+
+static const struct i2c_device_id m5mols_id[] = {
+	{ MOD_NAME, 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, m5mols_id);
+
+static struct i2c_driver m5mols_i2c_driver = {
+	.driver = {
+		.name	= MOD_NAME,
+	},
+	.probe		= m5mols_probe,
+	.remove		= m5mols_remove,
+	.id_table	= m5mols_id,
+};
+
+static int __init m5mols_mod_init(void)
+{
+	return i2c_add_driver(&m5mols_i2c_driver);
+}
+
+static void __exit m5mols_mod_exit(void)
+{
+	i2c_del_driver(&m5mols_i2c_driver);
+}
+
+module_init(m5mols_mod_init);
+module_exit(m5mols_mod_exit);
+
+MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>");
+MODULE_AUTHOR("Dongsoo Kim <dongsoo45.kim@samsung.com>");
+MODULE_DESCRIPTION("Fujitsu M-5MOLS 8M Pixel camera sensor with ISP driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/video/m5mols/m5mols_reg.h b/drivers/media/video/m5mols/m5mols_reg.h
new file mode 100644
index 0000000..707930f
--- /dev/null
+++ b/drivers/media/video/m5mols/m5mols_reg.h
@@ -0,0 +1,218 @@
+/*
+ * Register map for M-5MOLS 8M Pixel camera sensor with ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd
+ * Author: HeungJun Kim, riverful.kim@samsung.com
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd
+ * Author: Dongsoo Nathaniel Kim, dongsoo45.kim@samsung.com
+ *
+ * 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.
+ */
+
+#ifndef M5MOLS_REG_H
+#define M5MOLS_REG_H
+
+/*
+ * Category section register
+ *
+ * The category means set including relevant command of M-5MOLS.
+ */
+#define CAT_SYSTEM		0x00
+#define CAT_PARAM		0x01
+#define CAT_MONITOR		0x02
+#define CAT_AE			0x03
+#define CAT_WB			0x06
+#define CAT_EXIF		0x07
+#define CAT_LENS		0x0a
+#define CAT_FLASH		0x0f	/* related with FW, Verions, booting */
+
+/*
+ * Category 0 - System mode
+ *
+ * The system mode in the M-5MOLS means area available to handle with the whole
+ * & all-round system of sensor. It deals with version/interrupt/setting mode &
+ * even sensor's status. Especially, the M-5MOLS sensor with ISP varys by
+ * packaging & manufactur vendors, even the customer user vendor. And the
+ * detailed function may have a difference. The version information can
+ * determine what method use in the driver.
+ *
+ * There is many registers between customer version address and awb one. For
+ * more specific contents, reference the m5mols.h.
+ */
+#define CAT0_CUSTOMER_CODE	0x00	/* customer version*/
+#define CAT0_VERSION_AWB_L	0x09	/* Auto WB version low byte */
+#define CAT0_VERSION_STR	0x0a	/* string including M-5MOLS */
+#define CAT0_SYSMODE		0x0b	/* system mode register */
+#define CAT0_STATUS		0x0c	/* system status register */
+#define CAT0_INT_FACTOR		0x10	/* interrupt pending register */
+#define CAT0_INT_ENABLE		0x11	/* interrupt enable register */
+
+#define REG_MODE_SYSINIT	0x00	/* system mode */
+#define REG_MODE_PARAM		0x01	/* parameter mode */
+#define REG_MODE_MONITOR	0x02	/* monitor mode */
+#define REG_MODE_CAPTURE	0x03	/* capture mode */
+
+#define REG_INT_MODE		(1 << 0)
+#define REG_INT_AF		(1 << 1)
+#define REG_INT_ZOOM		(1 << 2)
+#define REG_INT_CAPTURE		(1 << 3)
+#define REG_INT_FRAMESYNC	(1 << 4)
+#define REG_INT_FD		(1 << 5)
+#define REG_INT_LENS_INIT	(1 << 6)
+#define REG_INT_SOUND		(1 << 7)
+#define REG_INT_ALLOFF		0x0
+#define REG_INT_MASK		0x0f
+
+/*
+ * category 1 - Parameter mode
+ *
+ * This category supports function of camera features of M-5MOLS. It means we
+ * can handle with preview(monitor) resolution size/frame per second/interface
+ * between the sensor and the Application Processor/even the image effect.
+ */
+#define CAT1_DATA_INTERFACE	0x00	/* interface between sensor and AP */
+#define CAT1_MONITOR_SIZE	0x01	/* resolution at the monitor mode */
+#define CAT1_MONITOR_FPS	0x02	/* frame per second at this mode */
+#define CAT1_EFFECT		0x0b	/* image effects */
+
+#define REG_INTERFACE_YUV	0x00
+#define REG_INTERFACE_HDMI	0x01
+#define REG_INTERFACE_MIPI	0x02	/* only this is used in this version */
+
+#define REG_EFFECT_OFF		0x00
+#define REG_EFFECT_NEGATIVE	0x01
+#define REG_EFFECT_SOLARIZATION	0x02
+#define REG_EFFECT_EMBOSS	0x06
+#define REG_EFFECT_OUTLINE	0x07
+#define REG_EFFECT_WATERCOLOR	0x08
+
+/*
+ * Category 2 - Monitor mode
+ *
+ * The monitor mode is same as preview mode as we said. The M-5MOLS has another
+ * mode named "Preview", but this preview mode is used at the case specific
+ * vider-recording mode. This mmode supports only YUYV format. On the other
+ * hand, the JPEG & RAW formats is supports by capture mode. And, there are
+ * another options like zoom/color effect(different with effect in parameter
+ * mode)/anti hand shaking algorithm.
+ */
+#define CAT2_ZOOM		0x01	/* set the zoom position & execute */
+#define CAT2_ZOOM_POSITION	0x02	/* get the zoom position */
+#define CAT2_ZOOM_STEP		0x03	/* set the zoom step */
+#define CAT2_CFIXB		0x09	/* CB value for color effect */
+#define CAT2_CFIXR		0x0a	/* CR value for color effect */
+#define CAT2_COLOR_EFFECT	0x0b	/* set on/off of color effect */
+#define CAT2_CHROMA_LVL		0x0f	/* set chroma level */
+#define CAT2_CHROMA_EN		0x10	/* set on/off of choroma */
+
+#define REG_CFIXB_SEPIA		0xd8
+#define REG_CFIXB_GRAY		0x00
+#define REG_CFIXB_RED		0x00
+#define REG_CFIXB_GREEN		0xe0
+#define REG_CFIXB_BLUE		0x40
+#define REG_CFIXB_PINK		0x20
+#define REG_CFIXB_YELLOW	0x80
+#define REG_CFIXB_PURPLE	0x50
+#define REG_CFIXB_ANTIQUE	0xd0
+
+#define REG_CFIXR_SEPIA		0x18
+#define REG_CFIXR_GRAY		0x00
+#define REG_CFIXR_RED		0x6b
+#define REG_CFIXR_GREEN		0xe0
+#define REG_CFIXR_BLUE		0x00
+#define REG_CFIXR_PINK		0x40
+#define REG_CFIXR_YELLOW	0x00
+#define REG_CFIXR_PURPLE	0x20
+#define REG_CFIXR_ANTIQUE	0x30
+
+#define REG_COLOR_EFFECT_OFF	0x00
+#define REG_COLOR_EFFECT_ON	0x01
+
+#define REG_CHROMA_LVL0		0x1c
+#define REG_CHROMA_LVL1		0x3e
+#define REG_CHROMA_LVL2		0x5f
+#define REG_CHROMA_LVL3		0x80
+#define REG_CHROMA_LVL4		0xa1
+#define REG_CHROMA_LVL5		0xc2
+#define REG_CHROMA_LVL6		0xe4
+
+#define REG_CHROMA_OFF		0x00
+#define REG_CHROMA_ON		0x01
+
+/*
+ * Category 3 - Auto Exposure
+ *
+ * The M-5MOLS exposure capbility is detailed as which is similar to digital
+ * camera. This category supports AE locking/various AE mode(range of exposure)
+ * /ISO/flickering/EV bias/shutter/meteoring, and anything else. And the
+ * maximum/minimum exposure gain value depending on M-5MOLS firmware, may be
+ * different. So, this category also provide getting the max/min values. And,
+ * each monitor and capture mode has each gain/shutter/max exposure values.
+ */
+#define CAT3_AE_LOCK		0x00	/* locking Auto exposure */
+#define CAT3_AE_MODE		0x01	/* set AE mode, mode means range */
+#define CAT3_MANUAL_GAIN_MON	0x12	/* meteoring value, monitor mode */
+#define CAT3_MANUAL_SHUT_MON	0x14	/* shutter value, monitor mode */
+#define CAT3_MAX_EXPOSURE_MON	0x16	/* max value at the monitor mode */
+#define CAT3_MAX_EXPOSURE_CAP	0x18	/* max value at the capture mode */
+#define CAT3_MAX_GAIN_MON	0x1a	/* max gain value at the monitor */
+#define CAT3_MAX_GAIN_CAP	0x1c	/* max gain value at the capture */
+#define CAT3_MANUAL_GAIN_CAP	0x26	/* meteoring value, capture mode */
+#define CAT3_MANUAL_SHUT_CAP	0x28	/* shutter value, capture mode */
+
+#define REG_AE_MODE_OFF		0x00	/* AE off */
+#define REG_AE_MODE_ALL		0x01	/* calc AE in all block integral */
+#define REG_AE_MODE_CENTER1	0x02	/* calc AE at the center area 1 */
+#define REG_AE_MODE_CENTER2	0x03	/* calc AE at the center area 2 */
+#define REG_AE_MODE_CENTER3	0x04	/* calc AE at the center area 3 */
+#define REG_AE_MODE_SPOT1	0x05	/* spot 1 */
+#define REG_AE_MODE_SPOT2	0x06	/* spot 2 */
+
+/*
+ * Category 6 - White Balance
+ *
+ * This cagetory provide AWB locking/mode/preset/speed/gain bias, etc.
+ */
+#define CAT6_AWB_LOCK		0x00	/* locking Auto Whitebalance */
+#define CAT6_AWB_MODE		0x02	/* set Auto or Manual */
+#define CAT6_AWB_MANUAL		0x03	/* preset, not used in this version */
+
+#define REG_AWB_MODE_AUTO	0x01	/* AWB off */
+#define REG_AWB_MODE_MANUAL	0x02	/* AWB preset */
+
+/*
+ * Category A - Lens parameter
+ */
+#define CATA_INIT_AF_FUNC	0x00
+#define CATA_AF_MODE		0x01
+#define CATA_AF_EXCUTE		0x02
+#define CATA_AF_STATUS		0x03
+#define CATA_AF_VERSION		0x0a
+
+#define REG_AF_FAIL		0x00
+#define REG_AF_SUCCESS		0x02
+#define REG_AF_IDLE		0x04
+#define REG_AF_BUSY		0x05
+
+#define REG_AF_MODE_NORMAL	0x00
+#define REG_AF_MODE_MACRO	0x01
+#define REG_AF_MODE_CAF		0x02
+
+#define REG_AF_STOP		0x00
+#define REG_AF_EXE_AUTO		0x01
+#define REG_AF_EXE_CAF		0x02
+#define REG_AF_POWEROFF		0x07
+
+/*
+ * Category F - Flash
+ *
+ * This mode provides functions about internal flash stuff and system startup.
+ */
+#define CATF_CAM_START		0x12	/* It start internal ARM core booting
+					 * after power-up */
+
+#endif	/* M5MOLS_REG_H */
diff --git a/include/media/m5mols.h b/include/media/m5mols.h
new file mode 100644
index 0000000..6986855
--- /dev/null
+++ b/include/media/m5mols.h
@@ -0,0 +1,35 @@
+/*
+ * Driver header for M-5MOLS 8M Pixel camera sensor with ISP
+ *
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd
+ * Author: HeungJun Kim, riverful.kim@samsung.com
+ *
+ * Copyright (C) 2009 Samsung Electronics Co., Ltd
+ * Author: Dongsoo Nathaniel Kim, dongsoo45.kim@samsung.com
+ *
+ * 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.
+ */
+
+#ifndef MEDIA_M5MOLS_H
+#define MEDIA_M5MOLS_H
+
+/**
+ * struct m5mols_platform_data - platform data for M-5MOLS driver
+ * @irq:	GPIO getting the irq pin of M-5MOLS
+ * @gpio_rst:	GPIO driving the reset pin of M-5MOLS
+ * @enable_rst:	the pin state when reset pin is enabled
+ * @set_power:	an additional callback to a board setup code
+ *		to be called after enabling and before disabling
+ *		the sensor device supply regulators
+ */
+struct m5mols_platform_data {
+	int irq;
+	int gpio_rst;
+	bool enable_rst;
+	int (*set_power)(struct device *dev, int on);
+};
+
+#endif	/* MEDIA_M5MOLS_H */
