media: Add sensor driver support for the ov13b10 camera.

This driver supports following features:

- phase detection auto focus (PDAF)
- manual exposure and analog/digital gain control
- vblank/hblank control
- test pattern
- image vertical flip and horizontal mirror control
- 4208x3120 at 30FPS
- 2080x1170 at 60FPS

Signed-off-by: Arec Kao <[e-mail]>
Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

MAINTAINERS

···
 T:	git git://linuxtv.org/media_tree.git
 F:	drivers/media/i2c/ov13858.c
 
+OMNIVISION OV13B10 SENSOR DRIVER
+M:	Arec Kao <[e-mail]>
+L:	[e-mail]
+S:	Maintained
+T:	git git://linuxtv.org/media_tree.git
+F:	drivers/media/i2c/ov13b10.c
+
 OMNIVISION OV2680 SENSOR DRIVER
 M:	Rui Miguel Silva <[e-mail]>
 L:	[e-mail]

drivers/media/i2c/Kconfig

···
 	  This is a Video4Linux2 sensor driver for the OmniVision
 	  OV13858 camera.
 
+config VIDEO_OV13B10
+	tristate "OmniVision OV13B10 sensor support"
+	depends on I2C && VIDEO_V4L2
+	select MEDIA_CONTROLLER
+	select VIDEO_V4L2_SUBDEV_API
+	select V4L2_FWNODE
+	help
+	  This is a Video4Linux2 sensor driver for the OmniVision
+	  OV13B10 camera.
+
 config VIDEO_VS6624
 	tristate "ST VS6624 sensor support"
 	depends on VIDEO_V4L2 && I2C

drivers/media/i2c/Makefile

···
 obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
 obj-$(CONFIG_VIDEO_OV9734) += ov9734.o
 obj-$(CONFIG_VIDEO_OV13858) += ov13858.o
+obj-$(CONFIG_VIDEO_OV13B10) += ov13b10.o
 obj-$(CONFIG_VIDEO_MT9M001) += mt9m001.o
 obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o
 obj-$(CONFIG_VIDEO_MT9M111) += mt9m111.o

drivers/media/i2c/ov13b10.c

···
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2021 Intel Corporation.
+
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+
+#define OV13B10_REG_VALUE_08BIT		1
+#define OV13B10_REG_VALUE_16BIT		2
+#define OV13B10_REG_VALUE_24BIT		3
+
+#define OV13B10_REG_MODE_SELECT		0x0100
+#define OV13B10_MODE_STANDBY		0x00
+#define OV13B10_MODE_STREAMING		0x01
+
+#define OV13B10_REG_SOFTWARE_RST	0x0103
+#define OV13B10_SOFTWARE_RST		0x01
+
+/* Chip ID */
+#define OV13B10_REG_CHIP_ID		0x300a
+#define OV13B10_CHIP_ID			0x560d42
+
+/* V_TIMING internal */
+#define OV13B10_REG_VTS			0x380e
+#define OV13B10_VTS_30FPS		0x0c7c
+#define OV13B10_VTS_60FPS		0x063e
+#define OV13B10_VTS_MAX			0x7fff
+
+/* HBLANK control - read only */
+#define OV13B10_PPL_560MHZ		4704
+
+/* Exposure control */
+#define OV13B10_REG_EXPOSURE		0x3500
+#define OV13B10_EXPOSURE_MIN		4
+#define OV13B10_EXPOSURE_STEP		1
+#define OV13B10_EXPOSURE_DEFAULT	0x40
+
+/* Analog gain control */
+#define OV13B10_REG_ANALOG_GAIN		0x3508
+#define OV13B10_ANA_GAIN_MIN		0x80
+#define OV13B10_ANA_GAIN_MAX		0x07c0
+#define OV13B10_ANA_GAIN_STEP		1
+#define OV13B10_ANA_GAIN_DEFAULT	0x80
+
+/* Digital gain control */
+#define OV13B10_REG_DGTL_GAIN_H		0x350a
+#define OV13B10_REG_DGTL_GAIN_M		0x350b
+#define OV13B10_REG_DGTL_GAIN_L		0x350c
+
+#define OV13B10_DGTL_GAIN_MIN		1024	     /* Min = 1 X */
+#define OV13B10_DGTL_GAIN_MAX		(4096 - 1)   /* Max = 4 X */
+#define OV13B10_DGTL_GAIN_DEFAULT	2560	     /* Default gain = 2.5 X */
+#define OV13B10_DGTL_GAIN_STEP		1	     /* Each step = 1/1024 */
+
+#define OV13B10_DGTL_GAIN_L_SHIFT	6
+#define OV13B10_DGTL_GAIN_L_MASK	0x3
+#define OV13B10_DGTL_GAIN_M_SHIFT	2
+#define OV13B10_DGTL_GAIN_M_MASK	0xff
+#define OV13B10_DGTL_GAIN_H_SHIFT	10
+#define OV13B10_DGTL_GAIN_H_MASK	0x3
+
+/* Test Pattern Control */
+#define OV13B10_REG_TEST_PATTERN	0x5080
+#define OV13B10_TEST_PATTERN_ENABLE	BIT(7)
+#define OV13B10_TEST_PATTERN_MASK	0xf3
+#define OV13B10_TEST_PATTERN_BAR_SHIFT	2
+
+/* Flip Control */
+#define OV13B10_REG_FORMAT1		0x3820
+#define OV13B10_REG_FORMAT2		0x3821
+
+/* Horizontal Window Offset */
+#define OV13B10_REG_H_WIN_OFFSET	0x3811
+
+/* Vertical Window Offset */
+#define OV13B10_REG_V_WIN_OFFSET	0x3813
+
+struct ov13b10_reg {
+	u16 address;
+	u8 val;
+};
+
+struct ov13b10_reg_list {
+	u32 num_of_regs;
+	const struct ov13b10_reg *regs;
+};
+
+/* Link frequency config */
+struct ov13b10_link_freq_config {
+	u32 pixels_per_line;
+
+	/* registers for this link frequency */
+	struct ov13b10_reg_list reg_list;
+};
+
+/* Mode : resolution and related config&values */
+struct ov13b10_mode {
+	/* Frame width */
+	u32 width;
+	/* Frame height */
+	u32 height;
+
+	/* V-timing */
+	u32 vts_def;
+	u32 vts_min;
+
+	/* Index of Link frequency config to be used */
+	u32 link_freq_index;
+	/* Default register values */
+	struct ov13b10_reg_list reg_list;
+};
+
+/* 4208x3120 needs 1120Mbps/lane, 4 lanes */
+static const struct ov13b10_reg mipi_data_rate_1120mbps[] = {
+	{0x0103, 0x01},
+	{0x0303, 0x04},
+	{0x0305, 0xaf},
+	{0x0321, 0x00},
+	{0x0323, 0x04},
+	{0x0324, 0x01},
+	{0x0325, 0xa4},
+	{0x0326, 0x81},
+	{0x0327, 0x04},
+	{0x3012, 0x07},
+	{0x3013, 0x32},
+	{0x3107, 0x23},
+	{0x3501, 0x0c},
+	{0x3502, 0x10},
+	{0x3504, 0x08},
+	{0x3508, 0x07},
+	{0x3509, 0xc0},
+	{0x3600, 0x16},
+	{0x3601, 0x54},
+	{0x3612, 0x4e},
+	{0x3620, 0x00},
+	{0x3621, 0x68},
+	{0x3622, 0x66},
+	{0x3623, 0x03},
+	{0x3662, 0x92},
+	{0x3666, 0xbb},
+	{0x3667, 0x44},
+	{0x366e, 0xff},
+	{0x366f, 0xf3},
+	{0x3675, 0x44},
+	{0x3676, 0x00},
+	{0x367f, 0xe9},
+	{0x3681, 0x32},
+	{0x3682, 0x1f},
+	{0x3683, 0x0b},
+	{0x3684, 0x0b},
+	{0x3704, 0x0f},
+	{0x3706, 0x40},
+	{0x3708, 0x3b},
+	{0x3709, 0x72},
+	{0x370b, 0xa2},
+	{0x3714, 0x24},
+	{0x371a, 0x3e},
+	{0x3725, 0x42},
+	{0x3739, 0x12},
+	{0x3767, 0x00},
+	{0x377a, 0x0d},
+	{0x3789, 0x18},
+	{0x3790, 0x40},
+	{0x3791, 0xa2},
+	{0x37c2, 0x04},
+	{0x37c3, 0xf1},
+	{0x37d9, 0x0c},
+	{0x37da, 0x02},
+	{0x37dc, 0x02},
+	{0x37e1, 0x04},
+	{0x37e2, 0x0a},
+	{0x3800, 0x00},
+	{0x3801, 0x00},
+	{0x3802, 0x00},
+	{0x3803, 0x08},
+	{0x3804, 0x10},
+	{0x3805, 0x8f},
+	{0x3806, 0x0c},
+	{0x3807, 0x47},
+	{0x3808, 0x10},
+	{0x3809, 0x70},
+	{0x380a, 0x0c},
+	{0x380b, 0x30},
+	{0x380c, 0x04},
+	{0x380d, 0x98},
+	{0x380e, 0x0c},
+	{0x380f, 0x7c},
+	{0x3811, 0x0f},
+	{0x3813, 0x09},
+	{0x3814, 0x01},
+	{0x3815, 0x01},
+	{0x3816, 0x01},
+	{0x3817, 0x01},
+	{0x381f, 0x08},
+	{0x3820, 0x88},
+	{0x3821, 0x00},
+	{0x3822, 0x14},
+	{0x382e, 0xe6},
+	{0x3c80, 0x00},
+	{0x3c87, 0x01},
+	{0x3c8c, 0x19},
+	{0x3c8d, 0x1c},
+	{0x3ca0, 0x00},
+	{0x3ca1, 0x00},
+	{0x3ca2, 0x00},
+	{0x3ca3, 0x00},
+	{0x3ca4, 0x50},
+	{0x3ca5, 0x11},
+	{0x3ca6, 0x01},
+	{0x3ca7, 0x00},
+	{0x3ca8, 0x00},
+	{0x4008, 0x02},
+	{0x4009, 0x0f},
+	{0x400a, 0x01},
+	{0x400b, 0x19},
+	{0x4011, 0x21},
+	{0x4017, 0x08},
+	{0x4019, 0x04},
+	{0x401a, 0x58},
+	{0x4032, 0x1e},
+	{0x4050, 0x02},
+	{0x4051, 0x09},
+	{0x405e, 0x00},
+	{0x4066, 0x02},
+	{0x4501, 0x00},
+	{0x4502, 0x10},
+	{0x4505, 0x00},
+	{0x4800, 0x64},
+	{0x481b, 0x3e},
+	{0x481f, 0x30},
+	{0x4825, 0x34},
+	{0x4837, 0x0e},
+	{0x484b, 0x01},
+	{0x4883, 0x02},
+	{0x5000, 0xff},
+	{0x5001, 0x0f},
+	{0x5045, 0x20},
+	{0x5046, 0x20},
+	{0x5047, 0xa4},
+	{0x5048, 0x20},
+	{0x5049, 0xa4},
+	{0x0100, 0x01},
+};
+
+static const struct ov13b10_reg mode_4208x3120_regs[] = {
+	{0x0305, 0xaf},
+	{0x3501, 0x0c},
+	{0x3662, 0x92},
+	{0x3714, 0x24},
+	{0x3739, 0x12},
+	{0x37c2, 0x04},
+	{0x37d9, 0x0c},
+	{0x37e2, 0x0a},
+	{0x3800, 0x00},
+	{0x3801, 0x00},
+	{0x3802, 0x00},
+	{0x3803, 0x08},
+	{0x3804, 0x10},
+	{0x3805, 0x8f},
+	{0x3806, 0x0c},
+	{0x3807, 0x47},
+	{0x3808, 0x10},
+	{0x3809, 0x70},
+	{0x380a, 0x0c},
+	{0x380b, 0x30},
+	{0x380c, 0x04},
+	{0x380d, 0x98},
+	{0x380e, 0x0c},
+	{0x380f, 0x7c},
+	{0x3810, 0x00},
+	{0x3811, 0x0f},
+	{0x3812, 0x00},
+	{0x3813, 0x09},
+	{0x3814, 0x01},
+	{0x3816, 0x01},
+	{0x3820, 0x88},
+	{0x3c8c, 0x19},
+	{0x4008, 0x02},
+	{0x4009, 0x0f},
+	{0x4050, 0x02},
+	{0x4051, 0x09},
+	{0x4501, 0x00},
+	{0x4505, 0x00},
+	{0x4837, 0x0e},
+	{0x5000, 0xff},
+	{0x5001, 0x0f},
+};
+
+static const struct ov13b10_reg mode_4160x3120_regs[] = {
+	{0x0305, 0xaf},
+	{0x3501, 0x0c},
+	{0x3662, 0x92},
+	{0x3714, 0x24},
+	{0x3739, 0x12},
+	{0x37c2, 0x04},
+	{0x37d9, 0x0c},
+	{0x37e2, 0x0a},
+	{0x3800, 0x00},
+	{0x3801, 0x00},
+	{0x3802, 0x00},
+	{0x3803, 0x08},
+	{0x3804, 0x10},
+	{0x3805, 0x8f},
+	{0x3806, 0x0c},
+	{0x3807, 0x47},
+	{0x3808, 0x10},
+	{0x3809, 0x40},
+	{0x380a, 0x0c},
+	{0x380b, 0x30},
+	{0x380c, 0x04},
+	{0x380d, 0x98},
+	{0x380e, 0x0c},
+	{0x380f, 0x7c},
+	{0x3810, 0x00},
+	{0x3811, 0x27},
+	{0x3812, 0x00},
+	{0x3813, 0x09},
+	{0x3814, 0x01},
+	{0x3816, 0x01},
+	{0x3820, 0x88},
+	{0x3c8c, 0x19},
+	{0x4008, 0x02},
+	{0x4009, 0x0f},
+	{0x4050, 0x02},
+	{0x4051, 0x09},
+	{0x4501, 0x00},
+	{0x4505, 0x00},
+	{0x4837, 0x0e},
+	{0x5000, 0xff},
+	{0x5001, 0x0f},
+};
+
+static const struct ov13b10_reg mode_4160x2340_regs[] = {
+	{0x0305, 0xaf},
+	{0x3501, 0x0c},
+	{0x3662, 0x92},
+	{0x3714, 0x24},
+	{0x3739, 0x12},
+	{0x37c2, 0x04},
+	{0x37d9, 0x0c},
+	{0x37e2, 0x0a},
+	{0x3800, 0x00},
+	{0x3801, 0x00},
+	{0x3802, 0x00},
+	{0x3803, 0x08},
+	{0x3804, 0x10},
+	{0x3805, 0x8f},
+	{0x3806, 0x0c},
+	{0x3807, 0x47},
+	{0x3808, 0x10},
+	{0x3809, 0x40},
+	{0x380a, 0x09},
+	{0x380b, 0x24},
+	{0x380c, 0x04},
+	{0x380d, 0x98},
+	{0x380e, 0x0c},
+	{0x380f, 0x7c},
+	{0x3810, 0x00},
+	{0x3811, 0x27},
+	{0x3812, 0x01},
+	{0x3813, 0x8f},
+	{0x3814, 0x01},
+	{0x3816, 0x01},
+	{0x3820, 0x88},
+	{0x3c8c, 0x19},
+	{0x4008, 0x02},
+	{0x4009, 0x0f},
+	{0x4050, 0x02},
+	{0x4051, 0x09},
+	{0x4501, 0x00},
+	{0x4505, 0x00},
+	{0x4837, 0x0e},
+	{0x5000, 0xff},
+	{0x5001, 0x0f},
+};
+
+static const struct ov13b10_reg mode_2104x1560_regs[] = {
+	{0x0305, 0xaf},
+	{0x3501, 0x06},
+	{0x3662, 0x88},
+	{0x3714, 0x28},
+	{0x3739, 0x10},
+	{0x37c2, 0x14},
+	{0x37d9, 0x06},
+	{0x37e2, 0x0c},
+	{0x3800, 0x00},
+	{0x3801, 0x00},
+	{0x3802, 0x00},
+	{0x3803, 0x08},
+	{0x3804, 0x10},
+	{0x3805, 0x8f},
+	{0x3806, 0x0c},
+	{0x3807, 0x47},
+	{0x3808, 0x08},
+	{0x3809, 0x38},
+	{0x380a, 0x06},
+	{0x380b, 0x18},
+	{0x380c, 0x04},
+	{0x380d, 0x98},
+	{0x380e, 0x06},
+	{0x380f, 0x3e},
+	{0x3810, 0x00},
+	{0x3811, 0x07},
+	{0x3812, 0x00},
+	{0x3813, 0x05},
+	{0x3814, 0x03},
+	{0x3816, 0x03},
+	{0x3820, 0x8b},
+	{0x3c8c, 0x18},
+	{0x4008, 0x00},
+	{0x4009, 0x05},
+	{0x4050, 0x00},
+	{0x4051, 0x05},
+	{0x4501, 0x08},
+	{0x4505, 0x00},
+	{0x4837, 0x0e},
+	{0x5000, 0xfd},
+	{0x5001, 0x0d},
+};
+
+static const struct ov13b10_reg mode_2080x1170_regs[] = {
+	{0x0305, 0xaf},
+	{0x3501, 0x06},
+	{0x3662, 0x88},
+	{0x3714, 0x28},
+	{0x3739, 0x10},
+	{0x37c2, 0x14},
+	{0x37d9, 0x06},
+	{0x37e2, 0x0c},
+	{0x3800, 0x00},
+	{0x3801, 0x00},
+	{0x3802, 0x00},
+	{0x3803, 0x08},
+	{0x3804, 0x10},
+	{0x3805, 0x8f},
+	{0x3806, 0x0c},
+	{0x3807, 0x47},
+	{0x3808, 0x08},
+	{0x3809, 0x20},
+	{0x380a, 0x04},
+	{0x380b, 0x92},
+	{0x380c, 0x04},
+	{0x380d, 0x98},
+	{0x380e, 0x06},
+	{0x380f, 0x3e},
+	{0x3810, 0x00},
+	{0x3811, 0x13},
+	{0x3812, 0x00},
+	{0x3813, 0xc9},
+	{0x3814, 0x03},
+	{0x3816, 0x03},
+	{0x3820, 0x8b},
+	{0x3c8c, 0x18},
+	{0x4008, 0x00},
+	{0x4009, 0x05},
+	{0x4050, 0x00},
+	{0x4051, 0x05},
+	{0x4501, 0x08},
+	{0x4505, 0x00},
+	{0x4837, 0x0e},
+	{0x5000, 0xfd},
+	{0x5001, 0x0d},
+};
+
+static const char * const ov13b10_test_pattern_menu[] = {
+	"Disabled",
+	"Vertical Color Bar Type 1",
+	"Vertical Color Bar Type 2",
+	"Vertical Color Bar Type 3",
+	"Vertical Color Bar Type 4"
+};
+
+/* Configurations for supported link frequencies */
+#define OV13B10_LINK_FREQ_560MHZ	560000000ULL
+#define OV13B10_LINK_FREQ_INDEX_0	0
+
+#define OV13B10_EXT_CLK			19200000
+#define OV13B10_DATA_LANES		4
+
+/*
+ * pixel_rate = link_freq * data-rate * nr_of_lanes / bits_per_sample
+ * data rate => double data rate; number of lanes => 4; bits per pixel => 10
+ */
+static u64 link_freq_to_pixel_rate(u64 f)
+{
+	f *= 2 * OV13B10_DATA_LANES;
+	do_div(f, 10);
+
+	return f;
+}
+
+/* Menu items for LINK_FREQ V4L2 control */
+static const s64 link_freq_menu_items[] = {
+	OV13B10_LINK_FREQ_560MHZ
+};
+
+/* Link frequency configs */
+static const struct ov13b10_link_freq_config
+			link_freq_configs[] = {
+	{
+		.pixels_per_line = OV13B10_PPL_560MHZ,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mipi_data_rate_1120mbps),
+			.regs = mipi_data_rate_1120mbps,
+		}
+	}
+};
+
+/* Mode configs */
+static const struct ov13b10_mode supported_modes[] = {
+	{
+		.width = 4208,
+		.height = 3120,
+		.vts_def = OV13B10_VTS_30FPS,
+		.vts_min = OV13B10_VTS_30FPS,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_4208x3120_regs),
+			.regs = mode_4208x3120_regs,
+		},
+		.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
+	},
+	{
+		.width = 4160,
+		.height = 3120,
+		.vts_def = OV13B10_VTS_30FPS,
+		.vts_min = OV13B10_VTS_30FPS,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_4160x3120_regs),
+			.regs = mode_4160x3120_regs,
+		},
+		.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
+	},
+	{
+		.width = 4160,
+		.height = 2340,
+		.vts_def = OV13B10_VTS_30FPS,
+		.vts_min = OV13B10_VTS_30FPS,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_4160x2340_regs),
+			.regs = mode_4160x2340_regs,
+		},
+		.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
+	},
+	{
+		.width = 2104,
+		.height = 1560,
+		.vts_def = OV13B10_VTS_60FPS,
+		.vts_min = OV13B10_VTS_60FPS,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_2104x1560_regs),
+			.regs = mode_2104x1560_regs,
+		},
+		.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
+	},
+	{
+		.width = 2080,
+		.height = 1170,
+		.vts_def = OV13B10_VTS_60FPS,
+		.vts_min = OV13B10_VTS_60FPS,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_2080x1170_regs),
+			.regs = mode_2080x1170_regs,
+		},
+		.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
+	}
+};
+
+struct ov13b10 {
+	struct v4l2_subdev sd;
+	struct media_pad pad;
+
+	struct v4l2_ctrl_handler ctrl_handler;
+	/* V4L2 Controls */
+	struct v4l2_ctrl *link_freq;
+	struct v4l2_ctrl *pixel_rate;
+	struct v4l2_ctrl *vblank;
+	struct v4l2_ctrl *hblank;
+	struct v4l2_ctrl *exposure;
+
+	/* Current mode */
+	const struct ov13b10_mode *cur_mode;
+
+	/* Mutex for serialized access */
+	struct mutex mutex;
+
+	/* Streaming on/off */
+	bool streaming;
+};
+
+#define to_ov13b10(_sd)	container_of(_sd, struct ov13b10, sd)
+
+/* Read registers up to 4 at a time */
+static int ov13b10_read_reg(struct ov13b10 *ov13b,
+			    u16 reg, u32 len, u32 *val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	struct i2c_msg msgs[2];
+	u8 *data_be_p;
+	int ret;
+	__be32 data_be = 0;
+	__be16 reg_addr_be = cpu_to_be16(reg);
+
+	if (len > 4)
+		return -EINVAL;
+
+	data_be_p = (u8 *)&data_be;
+	/* Write register address */
+	msgs[0].addr = client->addr;
+	msgs[0].flags = 0;
+	msgs[0].len = 2;
+	msgs[0].buf = (u8 *)&reg_addr_be;
+
+	/* Read data from register */
+	msgs[1].addr = client->addr;
+	msgs[1].flags = I2C_M_RD;
+	msgs[1].len = len;
+	msgs[1].buf = &data_be_p[4 - len];
+
+	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (ret != ARRAY_SIZE(msgs))
+		return -EIO;
+
+	*val = be32_to_cpu(data_be);
+
+	return 0;
+}
+
+/* Write registers up to 4 at a time */
+static int ov13b10_write_reg(struct ov13b10 *ov13b,
+			     u16 reg, u32 len, u32 __val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	int buf_i, val_i;
+	u8 buf[6], *val_p;
+	__be32 val;
+
+	if (len > 4)
+		return -EINVAL;
+
+	buf[0] = reg >> 8;
+	buf[1] = reg & 0xff;
+
+	val = cpu_to_be32(__val);
+	val_p = (u8 *)&val;
+	buf_i = 2;
+	val_i = 4 - len;
+
+	while (val_i < 4)
+		buf[buf_i++] = val_p[val_i++];
+
+	if (i2c_master_send(client, buf, len + 2) != len + 2)
+		return -EIO;
+
+	return 0;
+}
+
+/* Write a list of registers */
+static int ov13b10_write_regs(struct ov13b10 *ov13b,
+			      const struct ov13b10_reg *regs, u32 len)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	int ret;
+	u32 i;
+
+	for (i = 0; i < len; i++) {
+		ret = ov13b10_write_reg(ov13b, regs[i].address, 1,
+					regs[i].val);
+		if (ret) {
+			dev_err_ratelimited(&client->dev,
+					    "Failed to write reg 0x%4.4x. error = %d\n",
+					    regs[i].address, ret);
+
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int ov13b10_write_reg_list(struct ov13b10 *ov13b,
+				  const struct ov13b10_reg_list *r_list)
+{
+	return ov13b10_write_regs(ov13b, r_list->regs, r_list->num_of_regs);
+}
+
+/* Open sub-device */
+static int ov13b10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+	const struct ov13b10_mode *default_mode = &supported_modes[0];
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+	struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_get_try_format(sd,
+									fh->state,
+									0);
+
+	mutex_lock(&ov13b->mutex);
+
+	/* Initialize try_fmt */
+	try_fmt->width = default_mode->width;
+	try_fmt->height = default_mode->height;
+	try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
+	try_fmt->field = V4L2_FIELD_NONE;
+
+	/* No crop or compose */
+	mutex_unlock(&ov13b->mutex);
+
+	return 0;
+}
+
+static int ov13b10_update_digital_gain(struct ov13b10 *ov13b, u32 d_gain)
+{
+	int ret;
+	u32 val;
+
+	/*
+	 * 0x350C[7:6], 0x350B[7:0], 0x350A[1:0]
+	 */
+
+	val = (d_gain & OV13B10_DGTL_GAIN_L_MASK) << OV13B10_DGTL_GAIN_L_SHIFT;
+	ret = ov13b10_write_reg(ov13b, OV13B10_REG_DGTL_GAIN_L,
+				OV13B10_REG_VALUE_08BIT, val);
+	if (ret)
+		return ret;
+
+	val = (d_gain >> OV13B10_DGTL_GAIN_M_SHIFT) & OV13B10_DGTL_GAIN_M_MASK;
+	ret = ov13b10_write_reg(ov13b, OV13B10_REG_DGTL_GAIN_M,
+				OV13B10_REG_VALUE_08BIT, val);
+	if (ret)
+		return ret;
+
+	val = (d_gain >> OV13B10_DGTL_GAIN_H_SHIFT) & OV13B10_DGTL_GAIN_H_MASK;
+	ret = ov13b10_write_reg(ov13b, OV13B10_REG_DGTL_GAIN_H,
+				OV13B10_REG_VALUE_08BIT, val);
+
+	return ret;
+}
+
+static int ov13b10_enable_test_pattern(struct ov13b10 *ov13b, u32 pattern)
+{
+	int ret;
+	u32 val;
+
+	ret = ov13b10_read_reg(ov13b, OV13B10_REG_TEST_PATTERN,
+			       OV13B10_REG_VALUE_08BIT, &val);
+	if (ret)
+		return ret;
+
+	if (pattern) {
+		val &= OV13B10_TEST_PATTERN_MASK;
+		val |= ((pattern - 1) << OV13B10_TEST_PATTERN_BAR_SHIFT) |
+		     OV13B10_TEST_PATTERN_ENABLE;
+	} else {
+		val &= ~OV13B10_TEST_PATTERN_ENABLE;
+	}
+
+	return ov13b10_write_reg(ov13b, OV13B10_REG_TEST_PATTERN,
+				 OV13B10_REG_VALUE_08BIT, val);
+}
+
+static int ov13b10_set_ctrl_hflip(struct ov13b10 *ov13b, u32 ctrl_val)
+{
+	int ret;
+	u32 val;
+
+	ret = ov13b10_read_reg(ov13b, OV13B10_REG_FORMAT1,
+			       OV13B10_REG_VALUE_08BIT, &val);
+	if (ret)
+		return ret;
+
+	ret = ov13b10_write_reg(ov13b, OV13B10_REG_FORMAT1,
+				OV13B10_REG_VALUE_08BIT,
+				ctrl_val ? val & ~BIT(3) : val);
+
+	if (ret)
+		return ret;
+
+	ret = ov13b10_read_reg(ov13b, OV13B10_REG_H_WIN_OFFSET,
+			       OV13B10_REG_VALUE_08BIT, &val);
+	if (ret)
+		return ret;
+
+	/*
+	 * Applying cropping offset to reverse the change of Bayer order
+	 * after mirroring image
+	 */
+	return ov13b10_write_reg(ov13b, OV13B10_REG_H_WIN_OFFSET,
+				 OV13B10_REG_VALUE_08BIT,
+				 ctrl_val ? ++val : val);
+}
+
+static int ov13b10_set_ctrl_vflip(struct ov13b10 *ov13b, u32 ctrl_val)
+{
+	int ret;
+	u32 val;
+
+	ret = ov13b10_read_reg(ov13b, OV13B10_REG_FORMAT1,
+			       OV13B10_REG_VALUE_08BIT, &val);
+	if (ret)
+		return ret;
+
+	ret = ov13b10_write_reg(ov13b, OV13B10_REG_FORMAT1,
+				OV13B10_REG_VALUE_08BIT,
+				ctrl_val ? val | BIT(4) | BIT(5)  : val);
+
+	if (ret)
+		return ret;
+
+	ret = ov13b10_read_reg(ov13b, OV13B10_REG_V_WIN_OFFSET,
+			       OV13B10_REG_VALUE_08BIT, &val);
+	if (ret)
+		return ret;
+
+	/*
+	 * Applying cropping offset to reverse the change of Bayer order
+	 * after flipping image
+	 */
+	return ov13b10_write_reg(ov13b, OV13B10_REG_V_WIN_OFFSET,
+				 OV13B10_REG_VALUE_08BIT,
+				 ctrl_val ? --val : val);
+}
+
+static int ov13b10_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct ov13b10 *ov13b = container_of(ctrl->handler,
+					     struct ov13b10, ctrl_handler);
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	s64 max;
+	int ret;
+
+	/* Propagate change of current control to all related controls */
+	switch (ctrl->id) {
+	case V4L2_CID_VBLANK:
+		/* Update max exposure while meeting expected vblanking */
+		max = ov13b->cur_mode->height + ctrl->val - 8;
+		__v4l2_ctrl_modify_range(ov13b->exposure,
+					 ov13b->exposure->minimum,
+					 max, ov13b->exposure->step, max);
+		break;
+	}
+
+	/*
+	 * Applying V4L2 control value only happens
+	 * when power is up for streaming
+	 */
+	if (!pm_runtime_get_if_in_use(&client->dev))
+		return 0;
+
+	ret = 0;
+	switch (ctrl->id) {
+	case V4L2_CID_ANALOGUE_GAIN:
+		ret = ov13b10_write_reg(ov13b, OV13B10_REG_ANALOG_GAIN,
+					OV13B10_REG_VALUE_16BIT,
+					ctrl->val << 1);
+		break;
+	case V4L2_CID_DIGITAL_GAIN:
+		ret = ov13b10_update_digital_gain(ov13b, ctrl->val);
+		break;
+	case V4L2_CID_EXPOSURE:
+		ret = ov13b10_write_reg(ov13b, OV13B10_REG_EXPOSURE,
+					OV13B10_REG_VALUE_24BIT,
+					ctrl->val);
+		break;
+	case V4L2_CID_VBLANK:
+		ret = ov13b10_write_reg(ov13b, OV13B10_REG_VTS,
+					OV13B10_REG_VALUE_16BIT,
+					ov13b->cur_mode->height
+					+ ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN:
+		ret = ov13b10_enable_test_pattern(ov13b, ctrl->val);
+		break;
+	case V4L2_CID_HFLIP:
+		ov13b10_set_ctrl_hflip(ov13b, ctrl->val);
+		break;
+	case V4L2_CID_VFLIP:
+		ov13b10_set_ctrl_vflip(ov13b, ctrl->val);
+		break;
+	default:
+		dev_info(&client->dev,
+			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
+			 ctrl->id, ctrl->val);
+		break;
+	}
+
+	pm_runtime_put(&client->dev);
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops ov13b10_ctrl_ops = {
+	.s_ctrl = ov13b10_set_ctrl,
+};
+
+static int ov13b10_enum_mbus_code(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_mbus_code_enum *code)
+{
+	/* Only one bayer order(GRBG) is supported */
+	if (code->index > 0)
+		return -EINVAL;
+
+	code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
+
+	return 0;
+}
+
+static int ov13b10_enum_frame_size(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_state *sd_state,
+				   struct v4l2_subdev_frame_size_enum *fse)
+{
+	if (fse->index >= ARRAY_SIZE(supported_modes))
+		return -EINVAL;
+
+	if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
+		return -EINVAL;
+
+	fse->min_width = supported_modes[fse->index].width;
+	fse->max_width = fse->min_width;
+	fse->min_height = supported_modes[fse->index].height;
+	fse->max_height = fse->min_height;
+
+	return 0;
+}
+
+static void ov13b10_update_pad_format(const struct ov13b10_mode *mode,
+				      struct v4l2_subdev_format *fmt)
+{
+	fmt->format.width = mode->width;
+	fmt->format.height = mode->height;
+	fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
+	fmt->format.field = V4L2_FIELD_NONE;
+}
+
+static int ov13b10_do_get_pad_format(struct ov13b10 *ov13b,
+				     struct v4l2_subdev_state *sd_state,
+				     struct v4l2_subdev_format *fmt)
+{
+	struct v4l2_mbus_framefmt *framefmt;
+	struct v4l2_subdev *sd = &ov13b->sd;
+
+	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+		fmt->format = *framefmt;
+	} else {
+		ov13b10_update_pad_format(ov13b->cur_mode, fmt);
+	}
+
+	return 0;
+}
+
+static int ov13b10_get_pad_format(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_format *fmt)
+{
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+	int ret;
+
+	mutex_lock(&ov13b->mutex);
+	ret = ov13b10_do_get_pad_format(ov13b, sd_state, fmt);
+	mutex_unlock(&ov13b->mutex);
+
+	return ret;
+}
+
+static int
+ov13b10_set_pad_format(struct v4l2_subdev *sd,
+		       struct v4l2_subdev_state *sd_state,
+		       struct v4l2_subdev_format *fmt)
+{
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+	const struct ov13b10_mode *mode;
+	struct v4l2_mbus_framefmt *framefmt;
+	s32 vblank_def;
+	s32 vblank_min;
+	s64 h_blank;
+	s64 pixel_rate;
+	s64 link_freq;
+
+	mutex_lock(&ov13b->mutex);
+
+	/* Only one raw bayer(GRBG) order is supported */
+	if (fmt->format.code != MEDIA_BUS_FMT_SGRBG10_1X10)
+		fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
+
+	mode = v4l2_find_nearest_size(supported_modes,
+				      ARRAY_SIZE(supported_modes),
+				      width, height,
+				      fmt->format.width, fmt->format.height);
+	ov13b10_update_pad_format(mode, fmt);
+	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+		*framefmt = fmt->format;
+	} else {
+		ov13b->cur_mode = mode;
+		__v4l2_ctrl_s_ctrl(ov13b->link_freq, mode->link_freq_index);
+		link_freq = link_freq_menu_items[mode->link_freq_index];
+		pixel_rate = link_freq_to_pixel_rate(link_freq);
+		__v4l2_ctrl_s_ctrl_int64(ov13b->pixel_rate, pixel_rate);
+
+		/* Update limits and set FPS to default */
+		vblank_def = ov13b->cur_mode->vts_def -
+			     ov13b->cur_mode->height;
+		vblank_min = ov13b->cur_mode->vts_min -
+			     ov13b->cur_mode->height;
+		__v4l2_ctrl_modify_range(ov13b->vblank, vblank_min,
+					 OV13B10_VTS_MAX
+					 - ov13b->cur_mode->height,
+					 1,
+					 vblank_def);
+		__v4l2_ctrl_s_ctrl(ov13b->vblank, vblank_def);
+		h_blank =
+			link_freq_configs[mode->link_freq_index].pixels_per_line
+			 - ov13b->cur_mode->width;
+		__v4l2_ctrl_modify_range(ov13b->hblank, h_blank,
+					 h_blank, 1, h_blank);
+	}
+
+	mutex_unlock(&ov13b->mutex);
+
+	return 0;
+}
+
+static int ov13b10_start_streaming(struct ov13b10 *ov13b)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	const struct ov13b10_reg_list *reg_list;
+	int ret, link_freq_index;
+
+	/* Get out of from software reset */
+	ret = ov13b10_write_reg(ov13b, OV13B10_REG_SOFTWARE_RST,
+				OV13B10_REG_VALUE_08BIT, OV13B10_SOFTWARE_RST);
+	if (ret) {
+		dev_err(&client->dev, "%s failed to set powerup registers\n",
+			__func__);
+		return ret;
+	}
+
+	link_freq_index = ov13b->cur_mode->link_freq_index;
+	reg_list = &link_freq_configs[link_freq_index].reg_list;
+	ret = ov13b10_write_reg_list(ov13b, reg_list);
+	if (ret) {
+		dev_err(&client->dev, "%s failed to set plls\n", __func__);
+		return ret;
+	}
+
+	/* Apply default values of current mode */
+	reg_list = &ov13b->cur_mode->reg_list;
+	ret = ov13b10_write_reg_list(ov13b, reg_list);
+	if (ret) {
+		dev_err(&client->dev, "%s failed to set mode\n", __func__);
+		return ret;
+	}
+
+	/* Apply customized values from user */
+	ret =  __v4l2_ctrl_handler_setup(ov13b->sd.ctrl_handler);
+	if (ret)
+		return ret;
+
+	return ov13b10_write_reg(ov13b, OV13B10_REG_MODE_SELECT,
+				 OV13B10_REG_VALUE_08BIT,
+				 OV13B10_MODE_STREAMING);
+}
+
+/* Stop streaming */
+static int ov13b10_stop_streaming(struct ov13b10 *ov13b)
+{
+	return ov13b10_write_reg(ov13b, OV13B10_REG_MODE_SELECT,
+				 OV13B10_REG_VALUE_08BIT, OV13B10_MODE_STANDBY);
+}
+
+static int ov13b10_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret = 0;
+
+	mutex_lock(&ov13b->mutex);
+	if (ov13b->streaming == enable) {
+		mutex_unlock(&ov13b->mutex);
+		return 0;
+	}
+
+	if (enable) {
+		ret = pm_runtime_resume_and_get(&client->dev);
+		if (ret < 0)
+			goto err_unlock;
+
+		/*
+		 * Apply default & customized values
+		 * and then start streaming.
+		 */
+		ret = ov13b10_start_streaming(ov13b);
+		if (ret)
+			goto err_rpm_put;
+	} else {
+		ov13b10_stop_streaming(ov13b);
+		pm_runtime_put(&client->dev);
+	}
+
+	ov13b->streaming = enable;
+	mutex_unlock(&ov13b->mutex);
+
+	return ret;
+
+err_rpm_put:
+	pm_runtime_put(&client->dev);
+err_unlock:
+	mutex_unlock(&ov13b->mutex);
+
+	return ret;
+}
+
+static int __maybe_unused ov13b10_suspend(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+
+	if (ov13b->streaming)
+		ov13b10_stop_streaming(ov13b);
+
+	return 0;
+}
+
+static int __maybe_unused ov13b10_resume(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+	int ret;
+
+	if (ov13b->streaming) {
+		ret = ov13b10_start_streaming(ov13b);
+		if (ret)
+			goto error;
+	}
+
+	return 0;
+
+error:
+	ov13b10_stop_streaming(ov13b);
+	ov13b->streaming = false;
+	return ret;
+}
+
+/* Verify chip ID */
+static int ov13b10_identify_module(struct ov13b10 *ov13b)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	int ret;
+	u32 val;
+
+	ret = ov13b10_read_reg(ov13b, OV13B10_REG_CHIP_ID,
+			       OV13B10_REG_VALUE_24BIT, &val);
+	if (ret)
+		return ret;
+
+	if (val != OV13B10_CHIP_ID) {
+		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+			OV13B10_CHIP_ID, val);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_video_ops ov13b10_video_ops = {
+	.s_stream = ov13b10_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops ov13b10_pad_ops = {
+	.enum_mbus_code = ov13b10_enum_mbus_code,
+	.get_fmt = ov13b10_get_pad_format,
+	.set_fmt = ov13b10_set_pad_format,
+	.enum_frame_size = ov13b10_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops ov13b10_subdev_ops = {
+	.video = &ov13b10_video_ops,
+	.pad = &ov13b10_pad_ops,
+};
+
+static const struct media_entity_operations ov13b10_subdev_entity_ops = {
+	.link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_subdev_internal_ops ov13b10_internal_ops = {
+	.open = ov13b10_open,
+};
+
+/* Initialize control handlers */
+static int ov13b10_init_controls(struct ov13b10 *ov13b)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
+	struct v4l2_fwnode_device_properties props;
+	struct v4l2_ctrl_handler *ctrl_hdlr;
+	s64 exposure_max;
+	s64 vblank_def;
+	s64 vblank_min;
+	s64 hblank;
+	s64 pixel_rate_min;
+	s64 pixel_rate_max;
+	const struct ov13b10_mode *mode;
+	u32 max;
+	int ret;
+
+	ctrl_hdlr = &ov13b->ctrl_handler;
+	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
+	if (ret)
+		return ret;
+
+	mutex_init(&ov13b->mutex);
+	ctrl_hdlr->lock = &ov13b->mutex;
+	max = ARRAY_SIZE(link_freq_menu_items) - 1;
+	ov13b->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
+						  &ov13b10_ctrl_ops,
+						  V4L2_CID_LINK_FREQ,
+						  max,
+						  0,
+						  link_freq_menu_items);
+	if (ov13b->link_freq)
+		ov13b->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
+	pixel_rate_min = 0;
+	/* By default, PIXEL_RATE is read only */
+	ov13b->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
+					      V4L2_CID_PIXEL_RATE,
+					      pixel_rate_min, pixel_rate_max,
+					      1, pixel_rate_max);
+
+	mode = ov13b->cur_mode;
+	vblank_def = mode->vts_def - mode->height;
+	vblank_min = mode->vts_min - mode->height;
+	ov13b->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
+					  V4L2_CID_VBLANK,
+					  vblank_min,
+					  OV13B10_VTS_MAX - mode->height, 1,
+					  vblank_def);
+
+	hblank = link_freq_configs[mode->link_freq_index].pixels_per_line -
+		 mode->width;
+	ov13b->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
+					  V4L2_CID_HBLANK,
+					  hblank, hblank, 1, hblank);
+	if (ov13b->hblank)
+		ov13b->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	exposure_max = mode->vts_def - 8;
+	ov13b->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
+					    V4L2_CID_EXPOSURE,
+					    OV13B10_EXPOSURE_MIN,
+					    exposure_max, OV13B10_EXPOSURE_STEP,
+					    exposure_max);
+
+	v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
+			  OV13B10_ANA_GAIN_MIN, OV13B10_ANA_GAIN_MAX,
+			  OV13B10_ANA_GAIN_STEP, OV13B10_ANA_GAIN_DEFAULT);
+
+	/* Digital gain */
+	v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+			  OV13B10_DGTL_GAIN_MIN, OV13B10_DGTL_GAIN_MAX,
+			  OV13B10_DGTL_GAIN_STEP, OV13B10_DGTL_GAIN_DEFAULT);
+
+	v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov13b10_ctrl_ops,
+				     V4L2_CID_TEST_PATTERN,
+				     ARRAY_SIZE(ov13b10_test_pattern_menu) - 1,
+				     0, 0, ov13b10_test_pattern_menu);
+
+	v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
+			  V4L2_CID_HFLIP, 0, 1, 1, 0);
+	v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
+			  V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+	if (ctrl_hdlr->error) {
+		ret = ctrl_hdlr->error;
+		dev_err(&client->dev, "%s control init failed (%d)\n",
+			__func__, ret);
+		goto error;
+	}
+
+	ret = v4l2_fwnode_device_parse(&client->dev, &props);
+	if (ret)
+		goto error;
+
+	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov13b10_ctrl_ops,
+					      &props);
+	if (ret)
+		goto error;
+
+	ov13b->sd.ctrl_handler = ctrl_hdlr;
+
+	return 0;
+
+error:
+	v4l2_ctrl_handler_free(ctrl_hdlr);
+	mutex_destroy(&ov13b->mutex);
+
+	return ret;
+}
+
+static void ov13b10_free_controls(struct ov13b10 *ov13b)
+{
+	v4l2_ctrl_handler_free(ov13b->sd.ctrl_handler);
+	mutex_destroy(&ov13b->mutex);
+}
+
+static int ov13b10_check_hwcfg(struct device *dev)
+{
+	struct v4l2_fwnode_endpoint bus_cfg = {
+		.bus_type = V4L2_MBUS_CSI2_DPHY
+	};
+	struct fwnode_handle *ep;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
+	unsigned int i, j;
+	int ret;
+	u32 ext_clk;
+
+	if (!fwnode)
+		return -ENXIO;
+
+	ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
+				       &ext_clk);
+	if (ret) {
+		dev_err(dev, "can't get clock frequency");
+		return ret;
+	}
+
+	if (ext_clk != OV13B10_EXT_CLK) {
+		dev_err(dev, "external clock %d is not supported",
+			ext_clk);
+		return -EINVAL;
+	}
+
+	ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
+	if (!ep)
+		return -ENXIO;
+
+	ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
+	fwnode_handle_put(ep);
+	if (ret)
+		return ret;
+
+	if (bus_cfg.bus.mipi_csi2.num_data_lanes != OV13B10_DATA_LANES) {
+		dev_err(dev, "number of CSI2 data lanes %d is not supported",
+			bus_cfg.bus.mipi_csi2.num_data_lanes);
+		ret = -EINVAL;
+		goto out_err;
+	}
+
+	if (!bus_cfg.nr_of_link_frequencies) {
+		dev_err(dev, "no link frequencies defined");
+		ret = -EINVAL;
+		goto out_err;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) {
+		for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) {
+			if (link_freq_menu_items[i] ==
+				bus_cfg.link_frequencies[j])
+				break;
+		}
+
+		if (j == bus_cfg.nr_of_link_frequencies) {
+			dev_err(dev, "no link frequency %lld supported",
+				link_freq_menu_items[i]);
+			ret = -EINVAL;
+			goto out_err;
+		}
+	}
+
+out_err:
+	v4l2_fwnode_endpoint_free(&bus_cfg);
+
+	return ret;
+}
+
+static int ov13b10_probe(struct i2c_client *client)
+{
+	struct ov13b10 *ov13b;
+	int ret;
+
+	/* Check HW config */
+	ret = ov13b10_check_hwcfg(&client->dev);
+	if (ret) {
+		dev_err(&client->dev, "failed to check hwcfg: %d", ret);
+		return ret;
+	}
+
+	ov13b = devm_kzalloc(&client->dev, sizeof(*ov13b), GFP_KERNEL);
+	if (!ov13b)
+		return -ENOMEM;
+
+	/* Initialize subdev */
+	v4l2_i2c_subdev_init(&ov13b->sd, client, &ov13b10_subdev_ops);
+
+	/* Check module identity */
+	ret = ov13b10_identify_module(ov13b);
+	if (ret) {
+		dev_err(&client->dev, "failed to find sensor: %d\n", ret);
+		return ret;
+	}
+
+	/* Set default mode to max resolution */
+	ov13b->cur_mode = &supported_modes[0];
+
+	ret = ov13b10_init_controls(ov13b);
+	if (ret)
+		return ret;
+
+	/* Initialize subdev */
+	ov13b->sd.internal_ops = &ov13b10_internal_ops;
+	ov13b->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	ov13b->sd.entity.ops = &ov13b10_subdev_entity_ops;
+	ov13b->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+	/* Initialize source pad */
+	ov13b->pad.flags = MEDIA_PAD_FL_SOURCE;
+	ret = media_entity_pads_init(&ov13b->sd.entity, 1, &ov13b->pad);
+	if (ret) {
+		dev_err(&client->dev, "%s failed:%d\n", __func__, ret);
+		goto error_handler_free;
+	}
+
+	ret = v4l2_async_register_subdev_sensor(&ov13b->sd);
+	if (ret < 0)
+		goto error_media_entity;
+
+	/*
+	 * Device is already turned on by i2c-core with ACPI domain PM.
+	 * Enable runtime PM and turn off the device.
+	 */
+	pm_runtime_set_active(&client->dev);
+	pm_runtime_enable(&client->dev);
+	pm_runtime_idle(&client->dev);
+
+	return 0;
+
+error_media_entity:
+	media_entity_cleanup(&ov13b->sd.entity);
+
+error_handler_free:
+	ov13b10_free_controls(ov13b);
+	dev_err(&client->dev, "%s failed:%d\n", __func__, ret);
+
+	return ret;
+}
+
+static int ov13b10_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct ov13b10 *ov13b = to_ov13b10(sd);
+
+	v4l2_async_unregister_subdev(sd);
+	media_entity_cleanup(&sd->entity);
+	ov13b10_free_controls(ov13b);
+
+	pm_runtime_disable(&client->dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops ov13b10_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(ov13b10_suspend, ov13b10_resume)
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id ov13b10_acpi_ids[] = {
+	{"OVTIDB10"},
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(acpi, ov13b10_acpi_ids);
+#endif
+
+static struct i2c_driver ov13b10_i2c_driver = {
+	.driver = {
+		.name = "ov13b10",
+		.pm = &ov13b10_pm_ops,
+		.acpi_match_table = ACPI_PTR(ov13b10_acpi_ids),
+	},
+	.probe_new = ov13b10_probe,
+	.remove = ov13b10_remove,
+};
+
+module_i2c_driver(ov13b10_i2c_driver);
+
+MODULE_AUTHOR("Kao, Arec <[e-mail]>");
+MODULE_DESCRIPTION("Omnivision ov13b10 sensor driver");
+MODULE_LICENSE("GPL v2");