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path: root/target/linux/bcm27xx/patches-5.15/950-0281-media-i2c-Add-driver-for-Sony-IMX477-sensor.patch
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From 25714e34632a2bf39d913023a56e1a2cb576a6d7 Mon Sep 17 00:00:00 2001
From: Naushir Patuck <naush@raspberrypi.com>
Date: Fri, 8 May 2020 10:00:12 +0100
Subject: [PATCH] media: i2c: Add driver for Sony IMX477 sensor

Adds a driver for the 12MPix Sony IMX477 CSI2 sensor.
Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver
currently only supports 2 lanes.

The following Bayer modes are currently available:

4056x3040 12-bit @ 10fps
2028x1520 12-bit (binned) @ 40fps
2028x1050 12-bit (cropped/binned) @ 50fps
1012x760 10-bit (scaled) @ 120 fps

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
---
 MAINTAINERS                |    8 +
 drivers/media/i2c/Kconfig  |   11 +
 drivers/media/i2c/Makefile |    1 +
 drivers/media/i2c/imx477.c | 2191 ++++++++++++++++++++++++++++++++++++
 4 files changed, 2211 insertions(+)
 create mode 100644 drivers/media/i2c/imx477.c

--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17534,6 +17534,14 @@ T:	git git://linuxtv.org/media_tree.git
 F:	Documentation/devicetree/bindings/media/i2c/sony,imx412.yaml
 F:	drivers/media/i2c/imx412.c
 
+SONY IMX477 SENSOR DRIVER
+M:	Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+T:	git git://linuxtv.org/media_tree.git
+F:	Documentation/devicetree/bindings/media/i2c/imx477.yaml
+F:	drivers/media/i2c/imx477.c
+
 SONY MEMORYSTICK SUBSYSTEM
 M:	Maxim Levitsky <maximlevitsky@gmail.com>
 M:	Alex Dubov <oakad@yahoo.com>
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -817,6 +817,17 @@ config VIDEO_IMX290
 	  To compile this driver as a module, choose M here: the
 	  module will be called imx290.
 
+config VIDEO_IMX477
+	tristate "Sony IMX477 sensor support"
+	depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+	depends on MEDIA_CAMERA_SUPPORT
+	help
+	  This is a Video4Linux2 sensor driver for the Sony
+	  IMX477 camera.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called imx477.
+
 config VIDEO_IMX319
 	tristate "Sony IMX319 sensor support"
 	depends on I2C && VIDEO_V4L2
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -124,6 +124,7 @@ obj-$(CONFIG_VIDEO_IMX219)	+= imx219.o
 obj-$(CONFIG_VIDEO_IMX258)	+= imx258.o
 obj-$(CONFIG_VIDEO_IMX274)	+= imx274.o
 obj-$(CONFIG_VIDEO_IMX290)	+= imx290.o
+obj-$(CONFIG_VIDEO_IMX477)	+= imx477.o
 obj-$(CONFIG_VIDEO_IMX319)	+= imx319.o
 obj-$(CONFIG_VIDEO_IMX334)	+= imx334.o
 obj-$(CONFIG_VIDEO_IMX335)	+= imx335.o
--- /dev/null
+++ b/drivers/media/i2c/imx477.c
@@ -0,0 +1,2191 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for Sony IMX477 cameras.
+ * Copyright (C) 2020, Raspberry Pi (Trading) Ltd
+ *
+ * Based on Sony imx219 camera driver
+ * Copyright (C) 2019-2020 Raspberry Pi (Trading) Ltd
+ */
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-mediabus.h>
+
+#define IMX477_REG_VALUE_08BIT		1
+#define IMX477_REG_VALUE_16BIT		2
+
+/* Chip ID */
+#define IMX477_REG_CHIP_ID		0x0016
+#define IMX477_CHIP_ID			0x0477
+
+#define IMX477_REG_MODE_SELECT		0x0100
+#define IMX477_MODE_STANDBY		0x00
+#define IMX477_MODE_STREAMING		0x01
+
+#define IMX477_REG_ORIENTATION		0x101
+
+#define IMX477_XCLK_FREQ		24000000
+
+#define IMX477_DEFAULT_LINK_FREQ	450000000
+
+/* Pixel rate is fixed at 840MHz for all the modes */
+#define IMX477_PIXEL_RATE		840000000
+
+/* V_TIMING internal */
+#define IMX477_REG_FRAME_LENGTH		0x0340
+#define IMX477_FRAME_LENGTH_MAX		0xffdc
+
+/* Exposure control */
+#define IMX477_REG_EXPOSURE		0x0202
+#define IMX477_EXPOSURE_OFFSET		22
+#define IMX477_EXPOSURE_MIN		20
+#define IMX477_EXPOSURE_STEP		1
+#define IMX477_EXPOSURE_DEFAULT		0x640
+#define IMX477_EXPOSURE_MAX		(IMX477_FRAME_LENGTH_MAX - \
+					 IMX477_EXPOSURE_OFFSET)
+
+/* Analog gain control */
+#define IMX477_REG_ANALOG_GAIN		0x0204
+#define IMX477_ANA_GAIN_MIN		0
+#define IMX477_ANA_GAIN_MAX		978
+#define IMX477_ANA_GAIN_STEP		1
+#define IMX477_ANA_GAIN_DEFAULT		0x0
+
+/* Digital gain control */
+#define IMX477_REG_DIGITAL_GAIN		0x020e
+#define IMX477_DGTL_GAIN_MIN		0x0100
+#define IMX477_DGTL_GAIN_MAX		0xffff
+#define IMX477_DGTL_GAIN_DEFAULT	0x0100
+#define IMX477_DGTL_GAIN_STEP		1
+
+/* Test Pattern Control */
+#define IMX477_REG_TEST_PATTERN		0x0600
+#define IMX477_TEST_PATTERN_DISABLE	0
+#define IMX477_TEST_PATTERN_SOLID_COLOR	1
+#define IMX477_TEST_PATTERN_COLOR_BARS	2
+#define IMX477_TEST_PATTERN_GREY_COLOR	3
+#define IMX477_TEST_PATTERN_PN9		4
+
+/* Test pattern colour components */
+#define IMX477_REG_TEST_PATTERN_R	0x0602
+#define IMX477_REG_TEST_PATTERN_GR	0x0604
+#define IMX477_REG_TEST_PATTERN_B	0x0606
+#define IMX477_REG_TEST_PATTERN_GB	0x0608
+#define IMX477_TEST_PATTERN_COLOUR_MIN	0
+#define IMX477_TEST_PATTERN_COLOUR_MAX	0x0fff
+#define IMX477_TEST_PATTERN_COLOUR_STEP	1
+#define IMX477_TEST_PATTERN_R_DEFAULT	IMX477_TEST_PATTERN_COLOUR_MAX
+#define IMX477_TEST_PATTERN_GR_DEFAULT	0
+#define IMX477_TEST_PATTERN_B_DEFAULT	0
+#define IMX477_TEST_PATTERN_GB_DEFAULT	0
+
+/* Embedded metadata stream structure */
+#define IMX477_EMBEDDED_LINE_WIDTH 16384
+#define IMX477_NUM_EMBEDDED_LINES 1
+
+enum pad_types {
+	IMAGE_PAD,
+	METADATA_PAD,
+	NUM_PADS
+};
+
+/* IMX477 native and active pixel array size. */
+#define IMX477_NATIVE_WIDTH		4072U
+#define IMX477_NATIVE_HEIGHT		3176U
+#define IMX477_PIXEL_ARRAY_LEFT		8U
+#define IMX477_PIXEL_ARRAY_TOP		16U
+#define IMX477_PIXEL_ARRAY_WIDTH	4056U
+#define IMX477_PIXEL_ARRAY_HEIGHT	3040U
+
+struct imx477_reg {
+	u16 address;
+	u8 val;
+};
+
+struct imx477_reg_list {
+	unsigned int num_of_regs;
+	const struct imx477_reg *regs;
+};
+
+/* Mode : resolution and related config&values */
+struct imx477_mode {
+	/* Frame width */
+	unsigned int width;
+
+	/* Frame height */
+	unsigned int height;
+
+	/* H-timing in pixels */
+	unsigned int line_length_pix;
+
+	/* Analog crop rectangle. */
+	struct v4l2_rect crop;
+
+	/* Highest possible framerate. */
+	struct v4l2_fract timeperframe_min;
+
+	/* Default framerate. */
+	struct v4l2_fract timeperframe_default;
+
+	/* Default register values */
+	struct imx477_reg_list reg_list;
+};
+
+static const struct imx477_reg mode_common_regs[] = {
+	{0x0136, 0x18},
+	{0x0137, 0x00},
+	{0xe000, 0x00},
+	{0xe07a, 0x01},
+	{0x0808, 0x02},
+	{0x4ae9, 0x18},
+	{0x4aea, 0x08},
+	{0xf61c, 0x04},
+	{0xf61e, 0x04},
+	{0x4ae9, 0x21},
+	{0x4aea, 0x80},
+	{0x38a8, 0x1f},
+	{0x38a9, 0xff},
+	{0x38aa, 0x1f},
+	{0x38ab, 0xff},
+	{0x55d4, 0x00},
+	{0x55d5, 0x00},
+	{0x55d6, 0x07},
+	{0x55d7, 0xff},
+	{0x55e8, 0x07},
+	{0x55e9, 0xff},
+	{0x55ea, 0x00},
+	{0x55eb, 0x00},
+	{0x574c, 0x07},
+	{0x574d, 0xff},
+	{0x574e, 0x00},
+	{0x574f, 0x00},
+	{0x5754, 0x00},
+	{0x5755, 0x00},
+	{0x5756, 0x07},
+	{0x5757, 0xff},
+	{0x5973, 0x04},
+	{0x5974, 0x01},
+	{0x5d13, 0xc3},
+	{0x5d14, 0x58},
+	{0x5d15, 0xa3},
+	{0x5d16, 0x1d},
+	{0x5d17, 0x65},
+	{0x5d18, 0x8c},
+	{0x5d1a, 0x06},
+	{0x5d1b, 0xa9},
+	{0x5d1c, 0x45},
+	{0x5d1d, 0x3a},
+	{0x5d1e, 0xab},
+	{0x5d1f, 0x15},
+	{0x5d21, 0x0e},
+	{0x5d22, 0x52},
+	{0x5d23, 0xaa},
+	{0x5d24, 0x7d},
+	{0x5d25, 0x57},
+	{0x5d26, 0xa8},
+	{0x5d37, 0x5a},
+	{0x5d38, 0x5a},
+	{0x5d77, 0x7f},
+	{0x7b75, 0x0e},
+	{0x7b76, 0x0b},
+	{0x7b77, 0x08},
+	{0x7b78, 0x0a},
+	{0x7b79, 0x47},
+	{0x7b7c, 0x00},
+	{0x7b7d, 0x00},
+	{0x8d1f, 0x00},
+	{0x8d27, 0x00},
+	{0x9004, 0x03},
+	{0x9200, 0x50},
+	{0x9201, 0x6c},
+	{0x9202, 0x71},
+	{0x9203, 0x00},
+	{0x9204, 0x71},
+	{0x9205, 0x01},
+	{0x9371, 0x6a},
+	{0x9373, 0x6a},
+	{0x9375, 0x64},
+	{0x991a, 0x00},
+	{0x996b, 0x8c},
+	{0x996c, 0x64},
+	{0x996d, 0x50},
+	{0x9a4c, 0x0d},
+	{0x9a4d, 0x0d},
+	{0xa001, 0x0a},
+	{0xa003, 0x0a},
+	{0xa005, 0x0a},
+	{0xa006, 0x01},
+	{0xa007, 0xc0},
+	{0xa009, 0xc0},
+	{0x3d8a, 0x01},
+	{0x4421, 0x04},
+	{0x7b3b, 0x01},
+	{0x7b4c, 0x00},
+	{0x9905, 0x00},
+	{0x9907, 0x00},
+	{0x9909, 0x00},
+	{0x990b, 0x00},
+	{0x9944, 0x3c},
+	{0x9947, 0x3c},
+	{0x994a, 0x8c},
+	{0x994b, 0x50},
+	{0x994c, 0x1b},
+	{0x994d, 0x8c},
+	{0x994e, 0x50},
+	{0x994f, 0x1b},
+	{0x9950, 0x8c},
+	{0x9951, 0x1b},
+	{0x9952, 0x0a},
+	{0x9953, 0x8c},
+	{0x9954, 0x1b},
+	{0x9955, 0x0a},
+	{0x9a13, 0x04},
+	{0x9a14, 0x04},
+	{0x9a19, 0x00},
+	{0x9a1c, 0x04},
+	{0x9a1d, 0x04},
+	{0x9a26, 0x05},
+	{0x9a27, 0x05},
+	{0x9a2c, 0x01},
+	{0x9a2d, 0x03},
+	{0x9a2f, 0x05},
+	{0x9a30, 0x05},
+	{0x9a41, 0x00},
+	{0x9a46, 0x00},
+	{0x9a47, 0x00},
+	{0x9c17, 0x35},
+	{0x9c1d, 0x31},
+	{0x9c29, 0x50},
+	{0x9c3b, 0x2f},
+	{0x9c41, 0x6b},
+	{0x9c47, 0x2d},
+	{0x9c4d, 0x40},
+	{0x9c6b, 0x00},
+	{0x9c71, 0xc8},
+	{0x9c73, 0x32},
+	{0x9c75, 0x04},
+	{0x9c7d, 0x2d},
+	{0x9c83, 0x40},
+	{0x9c94, 0x3f},
+	{0x9c95, 0x3f},
+	{0x9c96, 0x3f},
+	{0x9c97, 0x00},
+	{0x9c98, 0x00},
+	{0x9c99, 0x00},
+	{0x9c9a, 0x3f},
+	{0x9c9b, 0x3f},
+	{0x9c9c, 0x3f},
+	{0x9ca0, 0x0f},
+	{0x9ca1, 0x0f},
+	{0x9ca2, 0x0f},
+	{0x9ca3, 0x00},
+	{0x9ca4, 0x00},
+	{0x9ca5, 0x00},
+	{0x9ca6, 0x1e},
+	{0x9ca7, 0x1e},
+	{0x9ca8, 0x1e},
+	{0x9ca9, 0x00},
+	{0x9caa, 0x00},
+	{0x9cab, 0x00},
+	{0x9cac, 0x09},
+	{0x9cad, 0x09},
+	{0x9cae, 0x09},
+	{0x9cbd, 0x50},
+	{0x9cbf, 0x50},
+	{0x9cc1, 0x50},
+	{0x9cc3, 0x40},
+	{0x9cc5, 0x40},
+	{0x9cc7, 0x40},
+	{0x9cc9, 0x0a},
+	{0x9ccb, 0x0a},
+	{0x9ccd, 0x0a},
+	{0x9d17, 0x35},
+	{0x9d1d, 0x31},
+	{0x9d29, 0x50},
+	{0x9d3b, 0x2f},
+	{0x9d41, 0x6b},
+	{0x9d47, 0x42},
+	{0x9d4d, 0x5a},
+	{0x9d6b, 0x00},
+	{0x9d71, 0xc8},
+	{0x9d73, 0x32},
+	{0x9d75, 0x04},
+	{0x9d7d, 0x42},
+	{0x9d83, 0x5a},
+	{0x9d94, 0x3f},
+	{0x9d95, 0x3f},
+	{0x9d96, 0x3f},
+	{0x9d97, 0x00},
+	{0x9d98, 0x00},
+	{0x9d99, 0x00},
+	{0x9d9a, 0x3f},
+	{0x9d9b, 0x3f},
+	{0x9d9c, 0x3f},
+	{0x9d9d, 0x1f},
+	{0x9d9e, 0x1f},
+	{0x9d9f, 0x1f},
+	{0x9da0, 0x0f},
+	{0x9da1, 0x0f},
+	{0x9da2, 0x0f},
+	{0x9da3, 0x00},
+	{0x9da4, 0x00},
+	{0x9da5, 0x00},
+	{0x9da6, 0x1e},
+	{0x9da7, 0x1e},
+	{0x9da8, 0x1e},
+	{0x9da9, 0x00},
+	{0x9daa, 0x00},
+	{0x9dab, 0x00},
+	{0x9dac, 0x09},
+	{0x9dad, 0x09},
+	{0x9dae, 0x09},
+	{0x9dc9, 0x0a},
+	{0x9dcb, 0x0a},
+	{0x9dcd, 0x0a},
+	{0x9e17, 0x35},
+	{0x9e1d, 0x31},
+	{0x9e29, 0x50},
+	{0x9e3b, 0x2f},
+	{0x9e41, 0x6b},
+	{0x9e47, 0x2d},
+	{0x9e4d, 0x40},
+	{0x9e6b, 0x00},
+	{0x9e71, 0xc8},
+	{0x9e73, 0x32},
+	{0x9e75, 0x04},
+	{0x9e94, 0x0f},
+	{0x9e95, 0x0f},
+	{0x9e96, 0x0f},
+	{0x9e97, 0x00},
+	{0x9e98, 0x00},
+	{0x9e99, 0x00},
+	{0x9ea0, 0x0f},
+	{0x9ea1, 0x0f},
+	{0x9ea2, 0x0f},
+	{0x9ea3, 0x00},
+	{0x9ea4, 0x00},
+	{0x9ea5, 0x00},
+	{0x9ea6, 0x3f},
+	{0x9ea7, 0x3f},
+	{0x9ea8, 0x3f},
+	{0x9ea9, 0x00},
+	{0x9eaa, 0x00},
+	{0x9eab, 0x00},
+	{0x9eac, 0x09},
+	{0x9ead, 0x09},
+	{0x9eae, 0x09},
+	{0x9ec9, 0x0a},
+	{0x9ecb, 0x0a},
+	{0x9ecd, 0x0a},
+	{0x9f17, 0x35},
+	{0x9f1d, 0x31},
+	{0x9f29, 0x50},
+	{0x9f3b, 0x2f},
+	{0x9f41, 0x6b},
+	{0x9f47, 0x42},
+	{0x9f4d, 0x5a},
+	{0x9f6b, 0x00},
+	{0x9f71, 0xc8},
+	{0x9f73, 0x32},
+	{0x9f75, 0x04},
+	{0x9f94, 0x0f},
+	{0x9f95, 0x0f},
+	{0x9f96, 0x0f},
+	{0x9f97, 0x00},
+	{0x9f98, 0x00},
+	{0x9f99, 0x00},
+	{0x9f9a, 0x2f},
+	{0x9f9b, 0x2f},
+	{0x9f9c, 0x2f},
+	{0x9f9d, 0x00},
+	{0x9f9e, 0x00},
+	{0x9f9f, 0x00},
+	{0x9fa0, 0x0f},
+	{0x9fa1, 0x0f},
+	{0x9fa2, 0x0f},
+	{0x9fa3, 0x00},
+	{0x9fa4, 0x00},
+	{0x9fa5, 0x00},
+	{0x9fa6, 0x1e},
+	{0x9fa7, 0x1e},
+	{0x9fa8, 0x1e},
+	{0x9fa9, 0x00},
+	{0x9faa, 0x00},
+	{0x9fab, 0x00},
+	{0x9fac, 0x09},
+	{0x9fad, 0x09},
+	{0x9fae, 0x09},
+	{0x9fc9, 0x0a},
+	{0x9fcb, 0x0a},
+	{0x9fcd, 0x0a},
+	{0xa14b, 0xff},
+	{0xa151, 0x0c},
+	{0xa153, 0x50},
+	{0xa155, 0x02},
+	{0xa157, 0x00},
+	{0xa1ad, 0xff},
+	{0xa1b3, 0x0c},
+	{0xa1b5, 0x50},
+	{0xa1b9, 0x00},
+	{0xa24b, 0xff},
+	{0xa257, 0x00},
+	{0xa2ad, 0xff},
+	{0xa2b9, 0x00},
+	{0xb21f, 0x04},
+	{0xb35c, 0x00},
+	{0xb35e, 0x08},
+	{0x0112, 0x0c},
+	{0x0113, 0x0c},
+	{0x0114, 0x01},
+	{0x0350, 0x00},
+	{0xbcf1, 0x02},
+	{0x3ff9, 0x01},
+};
+
+/* 12 mpix 10fps */
+static const struct imx477_reg mode_4056x3040_regs[] = {
+	{0x0342, 0x5d},
+	{0x0343, 0xc0},
+	{0x0344, 0x00},
+	{0x0345, 0x00},
+	{0x0346, 0x00},
+	{0x0347, 0x00},
+	{0x0348, 0x0f},
+	{0x0349, 0xd7},
+	{0x034a, 0x0b},
+	{0x034b, 0xdf},
+	{0x00e3, 0x00},
+	{0x00e4, 0x00},
+	{0x00fc, 0x0a},
+	{0x00fd, 0x0a},
+	{0x00fe, 0x0a},
+	{0x00ff, 0x0a},
+	{0x0220, 0x00},
+	{0x0221, 0x11},
+	{0x0381, 0x01},
+	{0x0383, 0x01},
+	{0x0385, 0x01},
+	{0x0387, 0x01},
+	{0x0900, 0x00},
+	{0x0901, 0x11},
+	{0x0902, 0x02},
+	{0x3140, 0x02},
+	{0x3c00, 0x00},
+	{0x3c01, 0x03},
+	{0x3c02, 0xa2},
+	{0x3f0d, 0x01},
+	{0x5748, 0x07},
+	{0x5749, 0xff},
+	{0x574a, 0x00},
+	{0x574b, 0x00},
+	{0x7b75, 0x0a},
+	{0x7b76, 0x0c},
+	{0x7b77, 0x07},
+	{0x7b78, 0x06},
+	{0x7b79, 0x3c},
+	{0x7b53, 0x01},
+	{0x9369, 0x5a},
+	{0x936b, 0x55},
+	{0x936d, 0x28},
+	{0x9304, 0x00},
+	{0x9305, 0x00},
+	{0x9e9a, 0x2f},
+	{0x9e9b, 0x2f},
+	{0x9e9c, 0x2f},
+	{0x9e9d, 0x00},
+	{0x9e9e, 0x00},
+	{0x9e9f, 0x00},
+	{0xa2a9, 0x60},
+	{0xa2b7, 0x00},
+	{0x0401, 0x00},
+	{0x0404, 0x00},
+	{0x0405, 0x10},
+	{0x0408, 0x00},
+	{0x0409, 0x00},
+	{0x040a, 0x00},
+	{0x040b, 0x00},
+	{0x040c, 0x0f},
+	{0x040d, 0xd8},
+	{0x040e, 0x0b},
+	{0x040f, 0xe0},
+	{0x034c, 0x0f},
+	{0x034d, 0xd8},
+	{0x034e, 0x0b},
+	{0x034f, 0xe0},
+	{0x0301, 0x05},
+	{0x0303, 0x02},
+	{0x0305, 0x04},
+	{0x0306, 0x01},
+	{0x0307, 0x5e},
+	{0x0309, 0x0c},
+	{0x030b, 0x02},
+	{0x030d, 0x02},
+	{0x030e, 0x00},
+	{0x030f, 0x96},
+	{0x0310, 0x01},
+	{0x0820, 0x07},
+	{0x0821, 0x08},
+	{0x0822, 0x00},
+	{0x0823, 0x00},
+	{0x080a, 0x00},
+	{0x080b, 0x7f},
+	{0x080c, 0x00},
+	{0x080d, 0x4f},
+	{0x080e, 0x00},
+	{0x080f, 0x77},
+	{0x0810, 0x00},
+	{0x0811, 0x5f},
+	{0x0812, 0x00},
+	{0x0813, 0x57},
+	{0x0814, 0x00},
+	{0x0815, 0x4f},
+	{0x0816, 0x01},
+	{0x0817, 0x27},
+	{0x0818, 0x00},
+	{0x0819, 0x3f},
+	{0xe04c, 0x00},
+	{0xe04d, 0x7f},
+	{0xe04e, 0x00},
+	{0xe04f, 0x1f},
+	{0x3e20, 0x01},
+	{0x3e37, 0x00},
+	{0x3f50, 0x00},
+	{0x3f56, 0x02},
+	{0x3f57, 0xae},
+};
+
+/* 2x2 binned. 40fps */
+static const struct imx477_reg mode_2028x1520_regs[] = {
+	{0x0342, 0x31},
+	{0x0343, 0xc4},
+	{0x0344, 0x00},
+	{0x0345, 0x00},
+	{0x0346, 0x00},
+	{0x0347, 0x00},
+	{0x0348, 0x0f},
+	{0x0349, 0xd7},
+	{0x034a, 0x0b},
+	{0x034b, 0xdf},
+	{0x0220, 0x00},
+	{0x0221, 0x11},
+	{0x0381, 0x01},
+	{0x0383, 0x01},
+	{0x0385, 0x01},
+	{0x0387, 0x01},
+	{0x0900, 0x01},
+	{0x0901, 0x12},
+	{0x0902, 0x02},
+	{0x3140, 0x02},
+	{0x3c00, 0x00},
+	{0x3c01, 0x03},
+	{0x3c02, 0xa2},
+	{0x3f0d, 0x01},
+	{0x5748, 0x07},
+	{0x5749, 0xff},
+	{0x574a, 0x00},
+	{0x574b, 0x00},
+	{0x7b53, 0x01},
+	{0x9369, 0x73},
+	{0x936b, 0x64},
+	{0x936d, 0x5f},
+	{0x9304, 0x00},
+	{0x9305, 0x00},
+	{0x9e9a, 0x2f},
+	{0x9e9b, 0x2f},
+	{0x9e9c, 0x2f},
+	{0x9e9d, 0x00},
+	{0x9e9e, 0x00},
+	{0x9e9f, 0x00},
+	{0xa2a9, 0x60},
+	{0xa2b7, 0x00},
+	{0x0401, 0x01},
+	{0x0404, 0x00},
+	{0x0405, 0x20},
+	{0x0408, 0x00},
+	{0x0409, 0x00},
+	{0x040a, 0x00},
+	{0x040b, 0x00},
+	{0x040c, 0x0f},
+	{0x040d, 0xd8},
+	{0x040e, 0x0b},
+	{0x040f, 0xe0},
+	{0x034c, 0x07},
+	{0x034d, 0xec},
+	{0x034e, 0x05},
+	{0x034f, 0xf0},
+	{0x0301, 0x05},
+	{0x0303, 0x02},
+	{0x0305, 0x04},
+	{0x0306, 0x01},
+	{0x0307, 0x5e},
+	{0x0309, 0x0c},
+	{0x030b, 0x02},
+	{0x030d, 0x02},
+	{0x030e, 0x00},
+	{0x030f, 0x96},
+	{0x0310, 0x01},
+	{0x0820, 0x07},
+	{0x0821, 0x08},
+	{0x0822, 0x00},
+	{0x0823, 0x00},
+	{0x080a, 0x00},
+	{0x080b, 0x7f},
+	{0x080c, 0x00},
+	{0x080d, 0x4f},
+	{0x080e, 0x00},
+	{0x080f, 0x77},
+	{0x0810, 0x00},
+	{0x0811, 0x5f},
+	{0x0812, 0x00},
+	{0x0813, 0x57},
+	{0x0814, 0x00},
+	{0x0815, 0x4f},
+	{0x0816, 0x01},
+	{0x0817, 0x27},
+	{0x0818, 0x00},
+	{0x0819, 0x3f},
+	{0xe04c, 0x00},
+	{0xe04d, 0x7f},
+	{0xe04e, 0x00},
+	{0xe04f, 0x1f},
+	{0x3e20, 0x01},
+	{0x3e37, 0x00},
+	{0x3f50, 0x00},
+	{0x3f56, 0x01},
+	{0x3f57, 0x6c},
+};
+
+/* 1080p cropped mode */
+static const struct imx477_reg mode_2028x1080_regs[] = {
+	{0x0342, 0x31},
+	{0x0343, 0xc4},
+	{0x0344, 0x00},
+	{0x0345, 0x00},
+	{0x0346, 0x01},
+	{0x0347, 0xb8},
+	{0x0348, 0x0f},
+	{0x0349, 0xd7},
+	{0x034a, 0x0a},
+	{0x034b, 0x27},
+	{0x0220, 0x00},
+	{0x0221, 0x11},
+	{0x0381, 0x01},
+	{0x0383, 0x01},
+	{0x0385, 0x01},
+	{0x0387, 0x01},
+	{0x0900, 0x01},
+	{0x0901, 0x12},
+	{0x0902, 0x02},
+	{0x3140, 0x02},
+	{0x3c00, 0x00},
+	{0x3c01, 0x03},
+	{0x3c02, 0xa2},
+	{0x3f0d, 0x01},
+	{0x5748, 0x07},
+	{0x5749, 0xff},
+	{0x574a, 0x00},
+	{0x574b, 0x00},
+	{0x7b53, 0x01},
+	{0x9369, 0x73},
+	{0x936b, 0x64},
+	{0x936d, 0x5f},
+	{0x9304, 0x00},
+	{0x9305, 0x00},
+	{0x9e9a, 0x2f},
+	{0x9e9b, 0x2f},
+	{0x9e9c, 0x2f},
+	{0x9e9d, 0x00},
+	{0x9e9e, 0x00},
+	{0x9e9f, 0x00},
+	{0xa2a9, 0x60},
+	{0xa2b7, 0x00},
+	{0x0401, 0x01},
+	{0x0404, 0x00},
+	{0x0405, 0x20},
+	{0x0408, 0x00},
+	{0x0409, 0x00},
+	{0x040a, 0x00},
+	{0x040b, 0x00},
+	{0x040c, 0x0f},
+	{0x040d, 0xd8},
+	{0x040e, 0x04},
+	{0x040f, 0x38},
+	{0x034c, 0x07},
+	{0x034d, 0xec},
+	{0x034e, 0x04},
+	{0x034f, 0x38},
+	{0x0301, 0x05},
+	{0x0303, 0x02},
+	{0x0305, 0x04},
+	{0x0306, 0x01},
+	{0x0307, 0x5e},
+	{0x0309, 0x0c},
+	{0x030b, 0x02},
+	{0x030d, 0x02},
+	{0x030e, 0x00},
+	{0x030f, 0x96},
+	{0x0310, 0x01},
+	{0x0820, 0x07},
+	{0x0821, 0x08},
+	{0x0822, 0x00},
+	{0x0823, 0x00},
+	{0x080a, 0x00},
+	{0x080b, 0x7f},
+	{0x080c, 0x00},
+	{0x080d, 0x4f},
+	{0x080e, 0x00},
+	{0x080f, 0x77},
+	{0x0810, 0x00},
+	{0x0811, 0x5f},
+	{0x0812, 0x00},
+	{0x0813, 0x57},
+	{0x0814, 0x00},
+	{0x0815, 0x4f},
+	{0x0816, 0x01},
+	{0x0817, 0x27},
+	{0x0818, 0x00},
+	{0x0819, 0x3f},
+	{0xe04c, 0x00},
+	{0xe04d, 0x7f},
+	{0xe04e, 0x00},
+	{0xe04f, 0x1f},
+	{0x3e20, 0x01},
+	{0x3e37, 0x00},
+	{0x3f50, 0x00},
+	{0x3f56, 0x01},
+	{0x3f57, 0x6c},
+};
+
+/* 4x4 binned. 120fps */
+static const struct imx477_reg mode_1012x760_regs[] = {
+	{0x420b, 0x01},
+	{0x990c, 0x00},
+	{0x990d, 0x08},
+	{0x9956, 0x8c},
+	{0x9957, 0x64},
+	{0x9958, 0x50},
+	{0x9a48, 0x06},
+	{0x9a49, 0x06},
+	{0x9a4a, 0x06},
+	{0x9a4b, 0x06},
+	{0x9a4c, 0x06},
+	{0x9a4d, 0x06},
+	{0x0112, 0x0a},
+	{0x0113, 0x0a},
+	{0x0114, 0x01},
+	{0x0342, 0x14},
+	{0x0343, 0x60},
+	{0x0344, 0x00},
+	{0x0345, 0x00},
+	{0x0346, 0x00},
+	{0x0347, 0x00},
+	{0x0348, 0x0f},
+	{0x0349, 0xd3},
+	{0x034a, 0x0b},
+	{0x034b, 0xdf},
+	{0x00e3, 0x00},
+	{0x00e4, 0x00},
+	{0x00fc, 0x0a},
+	{0x00fd, 0x0a},
+	{0x00fe, 0x0a},
+	{0x00ff, 0x0a},
+	{0x0220, 0x00},
+	{0x0221, 0x11},
+	{0x0381, 0x01},
+	{0x0383, 0x01},
+	{0x0385, 0x01},
+	{0x0387, 0x03},
+	{0x0900, 0x01},
+	{0x0901, 0x22},
+	{0x0902, 0x02},
+	{0x3140, 0x02},
+	{0x3c00, 0x00},
+	{0x3c01, 0x01},
+	{0x3c02, 0x9c},
+	{0x3f0d, 0x00},
+	{0x5748, 0x00},
+	{0x5749, 0x00},
+	{0x574a, 0x00},
+	{0x574b, 0xa4},
+	{0x7b75, 0x0e},
+	{0x7b76, 0x09},
+	{0x7b77, 0x08},
+	{0x7b78, 0x06},
+	{0x7b79, 0x34},
+	{0x7b53, 0x00},
+	{0x9369, 0x73},
+	{0x936b, 0x64},
+	{0x936d, 0x5f},
+	{0x9304, 0x03},
+	{0x9305, 0x80},
+	{0x9e9a, 0x3f},
+	{0x9e9b, 0x3f},
+	{0x9e9c, 0x3f},
+	{0x9e9d, 0x27},
+	{0x9e9e, 0x27},
+	{0x9e9f, 0x27},
+	{0xa2a9, 0x27},
+	{0xa2b7, 0x03},
+	{0x0401, 0x01},
+	{0x0404, 0x00},
+	{0x0405, 0x20},
+	{0x0408, 0x00},
+	{0x0409, 0x00},
+	{0x040a, 0x00},
+	{0x040b, 0x00},
+	{0x040c, 0x07},
+	{0x040d, 0xea},
+	{0x040e, 0x02},
+	{0x040f, 0xf8},
+	{0x034c, 0x03},
+	{0x034d, 0xf4},
+	{0x034e, 0x02},
+	{0x034f, 0xf8},
+	{0x0301, 0x05},
+	{0x0303, 0x02},
+	{0x0305, 0x02},
+	{0x0306, 0x00},
+	{0x0307, 0xaf},
+	{0x0309, 0x0a},
+	{0x030b, 0x02},
+	{0x030d, 0x02},
+	{0x030e, 0x00},
+	{0x030f, 0x96},
+	{0x0310, 0x01},
+	{0x0820, 0x07},
+	{0x0821, 0x08},
+	{0x0822, 0x00},
+	{0x0823, 0x00},
+	{0x080a, 0x00},
+	{0x080b, 0x6f},
+	{0x080c, 0x00},
+	{0x080d, 0x3f},
+	{0x080e, 0x00},
+	{0x080f, 0xff},
+	{0x0810, 0x00},
+	{0x0811, 0x4f},
+	{0x0812, 0x00},
+	{0x0813, 0x47},
+	{0x0814, 0x00},
+	{0x0815, 0x37},
+	{0x0816, 0x00},
+	{0x0817, 0xe7},
+	{0x0818, 0x00},
+	{0x0819, 0x2f},
+	{0xe04c, 0x00},
+	{0xe04d, 0x5f},
+	{0xe04e, 0x00},
+	{0xe04f, 0x1f},
+	{0x3e20, 0x01},
+	{0x3e37, 0x00},
+	{0x3f50, 0x00},
+	{0x3f56, 0x00},
+	{0x3f57, 0x96},
+};
+
+/* Mode configs */
+static const struct imx477_mode supported_modes_12bit[] = {
+	{
+		/* 12MPix 10fps mode */
+		.width = 4056,
+		.height = 3040,
+		.line_length_pix = 0x5dc0,
+		.crop = {
+			.left = 0,
+			.top = 0,
+			.width = 4056,
+			.height = 3040,
+		},
+		.timeperframe_min = {
+			.numerator = 100,
+			.denominator = 1000
+		},
+		.timeperframe_default = {
+			.numerator = 100,
+			.denominator = 1000
+		},
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_4056x3040_regs),
+			.regs = mode_4056x3040_regs,
+		},
+	},
+	{
+		/* 2x2 binned 40fps mode */
+		.width = 2028,
+		.height = 1520,
+		.line_length_pix = 0x31c4,
+		.crop = {
+			.left = 0,
+			.top = 0,
+			.width = 4056,
+			.height = 3040,
+		},
+		.timeperframe_min = {
+			.numerator = 100,
+			.denominator = 4000
+		},
+		.timeperframe_default = {
+			.numerator = 100,
+			.denominator = 3000
+		},
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_2028x1520_regs),
+			.regs = mode_2028x1520_regs,
+		},
+	},
+	{
+		/* 1080p 50fps cropped mode */
+		.width = 2028,
+		.height = 1080,
+		.line_length_pix = 0x31c4,
+		.crop = {
+			.left = 0,
+			.top = 440,
+			.width = 4056,
+			.height = 2600,
+		},
+		.timeperframe_min = {
+			.numerator = 100,
+			.denominator = 5000
+		},
+		.timeperframe_default = {
+			.numerator = 100,
+			.denominator = 3000
+		},
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_2028x1080_regs),
+			.regs = mode_2028x1080_regs,
+		},
+	}
+};
+
+static const struct imx477_mode supported_modes_10bit[] = {
+	{
+		/* 720P 120fps. 4x4 binned */
+		.width = 1012,
+		.height = 760,
+		.line_length_pix = 0x1460,
+		.crop = {
+			/*
+			 * FIXME: the analog crop rectangle is actually
+			 * programmed with a horizontal displacement of 0
+			 * pixels, not 4. It gets shrunk after going through
+			 * the scaler. Move this information to the compose
+			 * rectangle once the driver is expanded to represent
+			 * its processing blocks with multiple subdevs.
+			 */
+			.left = 4,
+			.top = 0,
+			.width = 4052,
+			.height = 3040,
+		},
+		.timeperframe_min = {
+			.numerator = 100,
+			.denominator = 12000
+		},
+		.timeperframe_default = {
+			.numerator = 100,
+			.denominator = 60000
+		},
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_1012x760_regs),
+			.regs = mode_1012x760_regs,
+		}
+	}
+};
+
+/*
+ * The supported formats.
+ * This table MUST contain 4 entries per format, to cover the various flip
+ * combinations in the order
+ * - no flip
+ * - h flip
+ * - v flip
+ * - h&v flips
+ */
+static const u32 codes[] = {
+	/* 12-bit modes. */
+	MEDIA_BUS_FMT_SRGGB12_1X12,
+	MEDIA_BUS_FMT_SGRBG12_1X12,
+	MEDIA_BUS_FMT_SGBRG12_1X12,
+	MEDIA_BUS_FMT_SBGGR12_1X12,
+	/* 10-bit modes. */
+	MEDIA_BUS_FMT_SRGGB10_1X10,
+	MEDIA_BUS_FMT_SGRBG10_1X10,
+	MEDIA_BUS_FMT_SGBRG10_1X10,
+	MEDIA_BUS_FMT_SBGGR10_1X10,
+};
+
+static const char * const imx477_test_pattern_menu[] = {
+	"Disabled",
+	"Color Bars",
+	"Solid Color",
+	"Grey Color Bars",
+	"PN9"
+};
+
+static const int imx477_test_pattern_val[] = {
+	IMX477_TEST_PATTERN_DISABLE,
+	IMX477_TEST_PATTERN_COLOR_BARS,
+	IMX477_TEST_PATTERN_SOLID_COLOR,
+	IMX477_TEST_PATTERN_GREY_COLOR,
+	IMX477_TEST_PATTERN_PN9,
+};
+
+/* regulator supplies */
+static const char * const imx477_supply_name[] = {
+	/* Supplies can be enabled in any order */
+	"VANA",  /* Analog (2.8V) supply */
+	"VDIG",  /* Digital Core (1.05V) supply */
+	"VDDL",  /* IF (1.8V) supply */
+};
+
+#define IMX477_NUM_SUPPLIES ARRAY_SIZE(imx477_supply_name)
+
+/*
+ * Initialisation delay between XCLR low->high and the moment when the sensor
+ * can start capture (i.e. can leave software standby), given by T7 in the
+ * datasheet is 8ms.  This does include I2C setup time as well.
+ *
+ * Note, that delay between XCLR low->high and reading the CCI ID register (T6
+ * in the datasheet) is much smaller - 600us.
+ */
+#define IMX477_XCLR_MIN_DELAY_US	8000
+#define IMX477_XCLR_DELAY_RANGE_US	1000
+
+struct imx477 {
+	struct v4l2_subdev sd;
+	struct media_pad pad[NUM_PADS];
+
+	struct v4l2_mbus_framefmt fmt;
+
+	struct clk *xclk;
+	u32 xclk_freq;
+
+	struct gpio_desc *reset_gpio;
+	struct regulator_bulk_data supplies[IMX477_NUM_SUPPLIES];
+
+	struct v4l2_ctrl_handler ctrl_handler;
+	/* V4L2 Controls */
+	struct v4l2_ctrl *pixel_rate;
+	struct v4l2_ctrl *exposure;
+	struct v4l2_ctrl *vflip;
+	struct v4l2_ctrl *hflip;
+	struct v4l2_ctrl *vblank;
+	struct v4l2_ctrl *hblank;
+
+	/* Current mode */
+	const struct imx477_mode *mode;
+
+	/*
+	 * Mutex for serialized access:
+	 * Protect sensor module set pad format and start/stop streaming safely.
+	 */
+	struct mutex mutex;
+
+	/* Streaming on/off */
+	bool streaming;
+
+	/* Rewrite common registers on stream on? */
+	bool common_regs_written;
+};
+
+static inline struct imx477 *to_imx477(struct v4l2_subdev *_sd)
+{
+	return container_of(_sd, struct imx477, sd);
+}
+
+static inline void get_mode_table(unsigned int code,
+				  const struct imx477_mode **mode_list,
+				  unsigned int *num_modes)
+{
+	switch (code) {
+	/* 12-bit */
+	case MEDIA_BUS_FMT_SRGGB12_1X12:
+	case MEDIA_BUS_FMT_SGRBG12_1X12:
+	case MEDIA_BUS_FMT_SGBRG12_1X12:
+	case MEDIA_BUS_FMT_SBGGR12_1X12:
+		*mode_list = supported_modes_12bit;
+		*num_modes = ARRAY_SIZE(supported_modes_12bit);
+		break;
+	/* 10-bit */
+	case MEDIA_BUS_FMT_SRGGB10_1X10:
+	case MEDIA_BUS_FMT_SGRBG10_1X10:
+	case MEDIA_BUS_FMT_SGBRG10_1X10:
+	case MEDIA_BUS_FMT_SBGGR10_1X10:
+		*mode_list = supported_modes_10bit;
+		*num_modes = ARRAY_SIZE(supported_modes_10bit);
+		break;
+	default:
+		*mode_list = NULL;
+		*num_modes = 0;
+	}
+}
+
+/* Read registers up to 2 at a time */
+static int imx477_read_reg(struct imx477 *imx477, u16 reg, u32 len, u32 *val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	struct i2c_msg msgs[2];
+	u8 addr_buf[2] = { reg >> 8, reg & 0xff };
+	u8 data_buf[4] = { 0, };
+	int ret;
+
+	if (len > 4)
+		return -EINVAL;
+
+	/* Write register address */
+	msgs[0].addr = client->addr;
+	msgs[0].flags = 0;
+	msgs[0].len = ARRAY_SIZE(addr_buf);
+	msgs[0].buf = addr_buf;
+
+	/* Read data from register */
+	msgs[1].addr = client->addr;
+	msgs[1].flags = I2C_M_RD;
+	msgs[1].len = len;
+	msgs[1].buf = &data_buf[4 - len];
+
+	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (ret != ARRAY_SIZE(msgs))
+		return -EIO;
+
+	*val = get_unaligned_be32(data_buf);
+
+	return 0;
+}
+
+/* Write registers up to 2 at a time */
+static int imx477_write_reg(struct imx477 *imx477, u16 reg, u32 len, u32 val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	u8 buf[6];
+
+	if (len > 4)
+		return -EINVAL;
+
+	put_unaligned_be16(reg, buf);
+	put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
+	if (i2c_master_send(client, buf, len + 2) != len + 2)
+		return -EIO;
+
+	return 0;
+}
+
+/* Write a list of registers */
+static int imx477_write_regs(struct imx477 *imx477,
+			     const struct imx477_reg *regs, u32 len)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < len; i++) {
+		ret = imx477_write_reg(imx477, 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;
+}
+
+/* Get bayer order based on flip setting. */
+static u32 imx477_get_format_code(struct imx477 *imx477, u32 code)
+{
+	unsigned int i;
+
+	lockdep_assert_held(&imx477->mutex);
+
+	for (i = 0; i < ARRAY_SIZE(codes); i++)
+		if (codes[i] == code)
+			break;
+
+	if (i >= ARRAY_SIZE(codes))
+		i = 0;
+
+	i = (i & ~3) | (imx477->vflip->val ? 2 : 0) |
+	    (imx477->hflip->val ? 1 : 0);
+
+	return codes[i];
+}
+
+static void imx477_set_default_format(struct imx477 *imx477)
+{
+	struct v4l2_mbus_framefmt *fmt = &imx477->fmt;
+
+	/* Set default mode to max resolution */
+	imx477->mode = &supported_modes_12bit[0];
+
+	fmt->code = MEDIA_BUS_FMT_SRGGB12_1X12;
+	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+							  fmt->colorspace,
+							  fmt->ycbcr_enc);
+	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+	fmt->width = imx477->mode->width;
+	fmt->height = imx477->mode->height;
+	fmt->field = V4L2_FIELD_NONE;
+}
+
+static int imx477_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+	struct imx477 *imx477 = to_imx477(sd);
+	struct v4l2_mbus_framefmt *try_fmt_img =
+		v4l2_subdev_get_try_format(sd, fh->pad, IMAGE_PAD);
+	struct v4l2_mbus_framefmt *try_fmt_meta =
+		v4l2_subdev_get_try_format(sd, fh->pad, METADATA_PAD);
+	struct v4l2_rect *try_crop;
+
+	mutex_lock(&imx477->mutex);
+
+	/* Initialize try_fmt for the image pad */
+	try_fmt_img->width = supported_modes_12bit[0].width;
+	try_fmt_img->height = supported_modes_12bit[0].height;
+	try_fmt_img->code = imx477_get_format_code(imx477,
+						   MEDIA_BUS_FMT_SRGGB12_1X12);
+	try_fmt_img->field = V4L2_FIELD_NONE;
+
+	/* Initialize try_fmt for the embedded metadata pad */
+	try_fmt_meta->width = IMX477_EMBEDDED_LINE_WIDTH;
+	try_fmt_meta->height = IMX477_NUM_EMBEDDED_LINES;
+	try_fmt_meta->code = MEDIA_BUS_FMT_SENSOR_DATA;
+	try_fmt_meta->field = V4L2_FIELD_NONE;
+
+	/* Initialize try_crop */
+	try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, IMAGE_PAD);
+	try_crop->left = IMX477_PIXEL_ARRAY_LEFT;
+	try_crop->top = IMX477_PIXEL_ARRAY_TOP;
+	try_crop->width = IMX477_PIXEL_ARRAY_WIDTH;
+	try_crop->height = IMX477_PIXEL_ARRAY_HEIGHT;
+
+	mutex_unlock(&imx477->mutex);
+
+	return 0;
+}
+
+static int imx477_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct imx477 *imx477 =
+		container_of(ctrl->handler, struct imx477, ctrl_handler);
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	int ret = 0;
+
+	if (ctrl->id == V4L2_CID_VBLANK) {
+		int exposure_max, exposure_def;
+
+		/* Update max exposure while meeting expected vblanking */
+		exposure_max = imx477->mode->height + ctrl->val -
+							IMX477_EXPOSURE_OFFSET;
+		exposure_def = min(exposure_max, imx477->exposure->val);
+		__v4l2_ctrl_modify_range(imx477->exposure,
+					 imx477->exposure->minimum,
+					 exposure_max, imx477->exposure->step,
+					 exposure_def);
+	}
+
+	/*
+	 * Applying V4L2 control value only happens
+	 * when power is up for streaming
+	 */
+	if (pm_runtime_get_if_in_use(&client->dev) == 0)
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_ANALOGUE_GAIN:
+		ret = imx477_write_reg(imx477, IMX477_REG_ANALOG_GAIN,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_EXPOSURE:
+		ret = imx477_write_reg(imx477, IMX477_REG_EXPOSURE,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_DIGITAL_GAIN:
+		ret = imx477_write_reg(imx477, IMX477_REG_DIGITAL_GAIN,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN:
+		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN,
+				       IMX477_REG_VALUE_16BIT,
+				       imx477_test_pattern_val[ctrl->val]);
+		break;
+	case V4L2_CID_TEST_PATTERN_RED:
+		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_R,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_GREENR:
+		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_GR,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_BLUE:
+		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_B,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_GREENB:
+		ret = imx477_write_reg(imx477, IMX477_REG_TEST_PATTERN_GB,
+				       IMX477_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_HFLIP:
+	case V4L2_CID_VFLIP:
+		ret = imx477_write_reg(imx477, IMX477_REG_ORIENTATION, 1,
+				       imx477->hflip->val |
+				       imx477->vflip->val << 1);
+		break;
+	case V4L2_CID_VBLANK:
+		ret = imx477_write_reg(imx477, IMX477_REG_FRAME_LENGTH,
+				       IMX477_REG_VALUE_16BIT,
+				       imx477->mode->height + ctrl->val);
+		break;
+	default:
+		dev_info(&client->dev,
+			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
+			 ctrl->id, ctrl->val);
+		ret = -EINVAL;
+		break;
+	}
+
+	pm_runtime_put(&client->dev);
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops imx477_ctrl_ops = {
+	.s_ctrl = imx477_set_ctrl,
+};
+
+static int imx477_enum_mbus_code(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_pad_config *cfg,
+				 struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct imx477 *imx477 = to_imx477(sd);
+
+	if (code->pad >= NUM_PADS)
+		return -EINVAL;
+
+	if (code->pad == IMAGE_PAD) {
+		if (code->index >= (ARRAY_SIZE(codes) / 4))
+			return -EINVAL;
+
+		code->code = imx477_get_format_code(imx477,
+						    codes[code->index * 4]);
+	} else {
+		if (code->index > 0)
+			return -EINVAL;
+
+		code->code = MEDIA_BUS_FMT_SENSOR_DATA;
+	}
+
+	return 0;
+}
+
+static int imx477_enum_frame_size(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_pad_config *cfg,
+				  struct v4l2_subdev_frame_size_enum *fse)
+{
+	struct imx477 *imx477 = to_imx477(sd);
+
+	if (fse->pad >= NUM_PADS)
+		return -EINVAL;
+
+	if (fse->pad == IMAGE_PAD) {
+		const struct imx477_mode *mode_list;
+		unsigned int num_modes;
+
+		get_mode_table(fse->code, &mode_list, &num_modes);
+
+		if (fse->index >= num_modes)
+			return -EINVAL;
+
+		if (fse->code != imx477_get_format_code(imx477, fse->code))
+			return -EINVAL;
+
+		fse->min_width = mode_list[fse->index].width;
+		fse->max_width = fse->min_width;
+		fse->min_height = mode_list[fse->index].height;
+		fse->max_height = fse->min_height;
+	} else {
+		if (fse->code != MEDIA_BUS_FMT_SENSOR_DATA || fse->index > 0)
+			return -EINVAL;
+
+		fse->min_width = IMX477_EMBEDDED_LINE_WIDTH;
+		fse->max_width = fse->min_width;
+		fse->min_height = IMX477_NUM_EMBEDDED_LINES;
+		fse->max_height = fse->min_height;
+	}
+
+	return 0;
+}
+
+static void imx477_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+{
+	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+							  fmt->colorspace,
+							  fmt->ycbcr_enc);
+	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+}
+
+static void imx477_update_image_pad_format(struct imx477 *imx477,
+					   const struct imx477_mode *mode,
+					   struct v4l2_subdev_format *fmt)
+{
+	fmt->format.width = mode->width;
+	fmt->format.height = mode->height;
+	fmt->format.field = V4L2_FIELD_NONE;
+	imx477_reset_colorspace(&fmt->format);
+}
+
+static void imx477_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
+{
+	fmt->format.width = IMX477_EMBEDDED_LINE_WIDTH;
+	fmt->format.height = IMX477_NUM_EMBEDDED_LINES;
+	fmt->format.code = MEDIA_BUS_FMT_SENSOR_DATA;
+	fmt->format.field = V4L2_FIELD_NONE;
+}
+
+static int imx477_get_pad_format(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_pad_config *cfg,
+				 struct v4l2_subdev_format *fmt)
+{
+	struct imx477 *imx477 = to_imx477(sd);
+
+	if (fmt->pad >= NUM_PADS)
+		return -EINVAL;
+
+	mutex_lock(&imx477->mutex);
+
+	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+		struct v4l2_mbus_framefmt *try_fmt =
+			v4l2_subdev_get_try_format(&imx477->sd, cfg, fmt->pad);
+		/* update the code which could change due to vflip or hflip: */
+		try_fmt->code = fmt->pad == IMAGE_PAD ?
+				imx477_get_format_code(imx477, try_fmt->code) :
+				MEDIA_BUS_FMT_SENSOR_DATA;
+		fmt->format = *try_fmt;
+	} else {
+		if (fmt->pad == IMAGE_PAD) {
+			imx477_update_image_pad_format(imx477, imx477->mode,
+						       fmt);
+			fmt->format.code =
+			       imx477_get_format_code(imx477, imx477->fmt.code);
+		} else {
+			imx477_update_metadata_pad_format(fmt);
+		}
+	}
+
+	mutex_unlock(&imx477->mutex);
+	return 0;
+}
+
+static
+unsigned int imx477_get_frame_length(const struct imx477_mode *mode,
+				     const struct v4l2_fract *timeperframe)
+{
+	u64 frame_length;
+
+	frame_length = (u64)timeperframe->numerator * IMX477_PIXEL_RATE;
+	do_div(frame_length,
+	       (u64)timeperframe->denominator * mode->line_length_pix);
+
+	if (WARN_ON(frame_length > IMX477_FRAME_LENGTH_MAX))
+		frame_length = IMX477_FRAME_LENGTH_MAX;
+
+	return max_t(unsigned int, frame_length, mode->height);
+}
+
+static void imx477_set_framing_limits(struct imx477 *imx477)
+{
+	const struct imx477_mode *mode = imx477->mode;
+	unsigned int frm_length_min, frm_length_default;
+	unsigned int exposure_max, exposure_def, hblank;
+
+	frm_length_min = imx477_get_frame_length(mode, &mode->timeperframe_min);
+	frm_length_default =
+		     imx477_get_frame_length(mode, &mode->timeperframe_default);
+
+	/* Update limits and set FPS to default */
+	__v4l2_ctrl_modify_range(imx477->vblank, frm_length_min - mode->height,
+				 IMX477_FRAME_LENGTH_MAX - mode->height,
+				 1, frm_length_default - mode->height);
+	__v4l2_ctrl_s_ctrl(imx477->vblank, frm_length_default - mode->height);
+
+	/* Update max exposure while meeting expected vblanking */
+	exposure_max = IMX477_FRAME_LENGTH_MAX - IMX477_EXPOSURE_OFFSET;
+	exposure_def = frm_length_default - mode->height -
+					    IMX477_EXPOSURE_OFFSET;
+	__v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
+				 exposure_max, imx477->exposure->step,
+				 exposure_def);
+	/*
+	 * Currently PPL is fixed to the mode specified value, so hblank
+	 * depends on mode->width only, and is not changeable in any
+	 * way other than changing the mode.
+	 */
+	hblank = mode->line_length_pix - mode->width;
+	__v4l2_ctrl_modify_range(imx477->hblank, hblank, hblank, 1, hblank);
+}
+
+static int imx477_set_pad_format(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_pad_config *cfg,
+				 struct v4l2_subdev_format *fmt)
+{
+	struct v4l2_mbus_framefmt *framefmt;
+	const struct imx477_mode *mode;
+	struct imx477 *imx477 = to_imx477(sd);
+
+	if (fmt->pad >= NUM_PADS)
+		return -EINVAL;
+
+	mutex_lock(&imx477->mutex);
+
+	if (fmt->pad == IMAGE_PAD) {
+		const struct imx477_mode *mode_list;
+		unsigned int num_modes;
+
+		/* Bayer order varies with flips */
+		fmt->format.code = imx477_get_format_code(imx477,
+							  fmt->format.code);
+
+		get_mode_table(fmt->format.code, &mode_list, &num_modes);
+
+		mode = v4l2_find_nearest_size(mode_list,
+					      num_modes,
+					      width, height,
+					      fmt->format.width,
+					      fmt->format.height);
+		imx477_update_image_pad_format(imx477, mode, fmt);
+		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+			framefmt = v4l2_subdev_get_try_format(sd, cfg,
+							      fmt->pad);
+			*framefmt = fmt->format;
+		} else {
+			imx477->mode = mode;
+			imx477_set_framing_limits(imx477);
+		}
+	} else {
+		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+			framefmt = v4l2_subdev_get_try_format(sd, cfg,
+							      fmt->pad);
+			*framefmt = fmt->format;
+		} else {
+			/* Only one embedded data mode is supported */
+			imx477_update_metadata_pad_format(fmt);
+		}
+	}
+
+	mutex_unlock(&imx477->mutex);
+
+	return 0;
+}
+
+static const struct v4l2_rect *
+__imx477_get_pad_crop(struct imx477 *imx477, struct v4l2_subdev_pad_config *cfg,
+		      unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+	switch (which) {
+	case V4L2_SUBDEV_FORMAT_TRY:
+		return v4l2_subdev_get_try_crop(&imx477->sd, cfg, pad);
+	case V4L2_SUBDEV_FORMAT_ACTIVE:
+		return &imx477->mode->crop;
+	}
+
+	return NULL;
+}
+
+static int imx477_get_selection(struct v4l2_subdev *sd,
+				struct v4l2_subdev_pad_config *cfg,
+				struct v4l2_subdev_selection *sel)
+{
+	switch (sel->target) {
+	case V4L2_SEL_TGT_CROP: {
+		struct imx477 *imx477 = to_imx477(sd);
+
+		mutex_lock(&imx477->mutex);
+		sel->r = *__imx477_get_pad_crop(imx477, cfg, sel->pad,
+						sel->which);
+		mutex_unlock(&imx477->mutex);
+
+		return 0;
+	}
+
+	case V4L2_SEL_TGT_NATIVE_SIZE:
+		sel->r.left = 0;
+		sel->r.top = 0;
+		sel->r.width = IMX477_NATIVE_WIDTH;
+		sel->r.height = IMX477_NATIVE_HEIGHT;
+
+		return 0;
+
+	case V4L2_SEL_TGT_CROP_DEFAULT:
+		sel->r.left = IMX477_PIXEL_ARRAY_LEFT;
+		sel->r.top = IMX477_PIXEL_ARRAY_TOP;
+		sel->r.width = IMX477_PIXEL_ARRAY_WIDTH;
+		sel->r.height = IMX477_PIXEL_ARRAY_HEIGHT;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+/* Start streaming */
+static int imx477_start_streaming(struct imx477 *imx477)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	const struct imx477_reg_list *reg_list;
+	int ret;
+
+	if (!imx477->common_regs_written) {
+		ret = imx477_write_regs(imx477, mode_common_regs,
+					ARRAY_SIZE(mode_common_regs));
+		if (ret) {
+			dev_err(&client->dev, "%s failed to set common settings\n",
+				__func__);
+			return ret;
+		}
+		imx477->common_regs_written = true;
+	}
+
+	/* Apply default values of current mode */
+	reg_list = &imx477->mode->reg_list;
+	ret = imx477_write_regs(imx477, reg_list->regs, reg_list->num_of_regs);
+	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(imx477->sd.ctrl_handler);
+	if (ret)
+		return ret;
+
+	/* set stream on register */
+	return imx477_write_reg(imx477, IMX477_REG_MODE_SELECT,
+				IMX477_REG_VALUE_08BIT, IMX477_MODE_STREAMING);
+}
+
+/* Stop streaming */
+static void imx477_stop_streaming(struct imx477 *imx477)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	int ret;
+
+	/* set stream off register */
+	ret = imx477_write_reg(imx477, IMX477_REG_MODE_SELECT,
+			       IMX477_REG_VALUE_08BIT, IMX477_MODE_STANDBY);
+	if (ret)
+		dev_err(&client->dev, "%s failed to set stream\n", __func__);
+}
+
+static int imx477_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct imx477 *imx477 = to_imx477(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	int ret = 0;
+
+	mutex_lock(&imx477->mutex);
+	if (imx477->streaming == enable) {
+		mutex_unlock(&imx477->mutex);
+		return 0;
+	}
+
+	if (enable) {
+		ret = pm_runtime_get_sync(&client->dev);
+		if (ret < 0) {
+			pm_runtime_put_noidle(&client->dev);
+			goto err_unlock;
+		}
+
+		/*
+		 * Apply default & customized values
+		 * and then start streaming.
+		 */
+		ret = imx477_start_streaming(imx477);
+		if (ret)
+			goto err_rpm_put;
+	} else {
+		imx477_stop_streaming(imx477);
+		pm_runtime_put(&client->dev);
+	}
+
+	imx477->streaming = enable;
+
+	/* vflip and hflip cannot change during streaming */
+	__v4l2_ctrl_grab(imx477->vflip, enable);
+	__v4l2_ctrl_grab(imx477->hflip, enable);
+
+	mutex_unlock(&imx477->mutex);
+
+	return ret;
+
+err_rpm_put:
+	pm_runtime_put(&client->dev);
+err_unlock:
+	mutex_unlock(&imx477->mutex);
+
+	return ret;
+}
+
+/* Power/clock management functions */
+static int imx477_power_on(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx477 *imx477 = to_imx477(sd);
+	int ret;
+
+	ret = regulator_bulk_enable(IMX477_NUM_SUPPLIES,
+				    imx477->supplies);
+	if (ret) {
+		dev_err(&client->dev, "%s: failed to enable regulators\n",
+			__func__);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(imx477->xclk);
+	if (ret) {
+		dev_err(&client->dev, "%s: failed to enable clock\n",
+			__func__);
+		goto reg_off;
+	}
+
+	gpiod_set_value_cansleep(imx477->reset_gpio, 1);
+	usleep_range(IMX477_XCLR_MIN_DELAY_US,
+		     IMX477_XCLR_MIN_DELAY_US + IMX477_XCLR_DELAY_RANGE_US);
+
+	return 0;
+
+reg_off:
+	regulator_bulk_disable(IMX477_NUM_SUPPLIES, imx477->supplies);
+	return ret;
+}
+
+static int imx477_power_off(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx477 *imx477 = to_imx477(sd);
+
+	gpiod_set_value_cansleep(imx477->reset_gpio, 0);
+	regulator_bulk_disable(IMX477_NUM_SUPPLIES, imx477->supplies);
+	clk_disable_unprepare(imx477->xclk);
+
+	/* Force reprogramming of the common registers when powered up again. */
+	imx477->common_regs_written = false;
+
+	return 0;
+}
+
+static int __maybe_unused imx477_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx477 *imx477 = to_imx477(sd);
+
+	if (imx477->streaming)
+		imx477_stop_streaming(imx477);
+
+	return 0;
+}
+
+static int __maybe_unused imx477_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx477 *imx477 = to_imx477(sd);
+	int ret;
+
+	if (imx477->streaming) {
+		ret = imx477_start_streaming(imx477);
+		if (ret)
+			goto error;
+	}
+
+	return 0;
+
+error:
+	imx477_stop_streaming(imx477);
+	imx477->streaming = 0;
+	return ret;
+}
+
+static int imx477_get_regulators(struct imx477 *imx477)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	unsigned int i;
+
+	for (i = 0; i < IMX477_NUM_SUPPLIES; i++)
+		imx477->supplies[i].supply = imx477_supply_name[i];
+
+	return devm_regulator_bulk_get(&client->dev,
+				       IMX477_NUM_SUPPLIES,
+				       imx477->supplies);
+}
+
+/* Verify chip ID */
+static int imx477_identify_module(struct imx477 *imx477)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	int ret;
+	u32 val;
+
+	ret = imx477_read_reg(imx477, IMX477_REG_CHIP_ID,
+			      IMX477_REG_VALUE_16BIT, &val);
+	if (ret) {
+		dev_err(&client->dev, "failed to read chip id %x, with error %d\n",
+			IMX477_CHIP_ID, ret);
+		return ret;
+	}
+
+	if (val != IMX477_CHIP_ID) {
+		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+			IMX477_CHIP_ID, val);
+		ret = -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops imx477_core_ops = {
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_video_ops imx477_video_ops = {
+	.s_stream = imx477_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops imx477_pad_ops = {
+	.enum_mbus_code = imx477_enum_mbus_code,
+	.get_fmt = imx477_get_pad_format,
+	.set_fmt = imx477_set_pad_format,
+	.get_selection = imx477_get_selection,
+	.enum_frame_size = imx477_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops imx477_subdev_ops = {
+	.core = &imx477_core_ops,
+	.video = &imx477_video_ops,
+	.pad = &imx477_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops imx477_internal_ops = {
+	.open = imx477_open,
+};
+
+/* Initialize control handlers */
+static int imx477_init_controls(struct imx477 *imx477)
+{
+	struct v4l2_ctrl_handler *ctrl_hdlr;
+	struct i2c_client *client = v4l2_get_subdevdata(&imx477->sd);
+	unsigned int i;
+	int ret;
+
+	ctrl_hdlr = &imx477->ctrl_handler;
+	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 14);
+	if (ret)
+		return ret;
+
+	mutex_init(&imx477->mutex);
+	ctrl_hdlr->lock = &imx477->mutex;
+
+	/* By default, PIXEL_RATE is read only */
+	imx477->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+					       V4L2_CID_PIXEL_RATE,
+					       IMX477_PIXEL_RATE,
+					       IMX477_PIXEL_RATE, 1,
+					       IMX477_PIXEL_RATE);
+
+	/*
+	 * Create the controls here, but mode specific limits are setup
+	 * in the imx477_set_framing_limits() call below.
+	 */
+	imx477->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+					   V4L2_CID_VBLANK, 0, 0xffff, 1, 0);
+	imx477->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+					   V4L2_CID_HBLANK, 0, 0xffff, 1, 0);
+
+	/* HBLANK is read-only for now, but does change with mode. */
+	if (imx477->hblank)
+		imx477->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	imx477->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+					     V4L2_CID_EXPOSURE,
+					     IMX477_EXPOSURE_MIN,
+					     IMX477_EXPOSURE_MAX,
+					     IMX477_EXPOSURE_STEP,
+					     IMX477_EXPOSURE_DEFAULT);
+
+	v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
+			  IMX477_ANA_GAIN_MIN, IMX477_ANA_GAIN_MAX,
+			  IMX477_ANA_GAIN_STEP, IMX477_ANA_GAIN_DEFAULT);
+
+	v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+			  IMX477_DGTL_GAIN_MIN, IMX477_DGTL_GAIN_MAX,
+			  IMX477_DGTL_GAIN_STEP, IMX477_DGTL_GAIN_DEFAULT);
+
+	imx477->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+					  V4L2_CID_HFLIP, 0, 1, 1, 0);
+	if (imx477->hflip)
+		imx477->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+	imx477->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+					  V4L2_CID_VFLIP, 0, 1, 1, 0);
+	if (imx477->vflip)
+		imx477->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+	v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx477_ctrl_ops,
+				     V4L2_CID_TEST_PATTERN,
+				     ARRAY_SIZE(imx477_test_pattern_menu) - 1,
+				     0, 0, imx477_test_pattern_menu);
+	for (i = 0; i < 4; i++) {
+		/*
+		 * The assumption is that
+		 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
+		 * V4L2_CID_TEST_PATTERN_BLUE   == V4L2_CID_TEST_PATTERN_RED + 2
+		 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
+		 */
+		v4l2_ctrl_new_std(ctrl_hdlr, &imx477_ctrl_ops,
+				  V4L2_CID_TEST_PATTERN_RED + i,
+				  IMX477_TEST_PATTERN_COLOUR_MIN,
+				  IMX477_TEST_PATTERN_COLOUR_MAX,
+				  IMX477_TEST_PATTERN_COLOUR_STEP,
+				  IMX477_TEST_PATTERN_COLOUR_MAX);
+		/* The "Solid color" pattern is white by default */
+	}
+
+	if (ctrl_hdlr->error) {
+		ret = ctrl_hdlr->error;
+		dev_err(&client->dev, "%s control init failed (%d)\n",
+			__func__, ret);
+		goto error;
+	}
+
+	imx477->sd.ctrl_handler = ctrl_hdlr;
+
+	/* Setup exposure and frame/line length limits. */
+	imx477_set_framing_limits(imx477);
+
+	return 0;
+
+error:
+	v4l2_ctrl_handler_free(ctrl_hdlr);
+	mutex_destroy(&imx477->mutex);
+
+	return ret;
+}
+
+static void imx477_free_controls(struct imx477 *imx477)
+{
+	v4l2_ctrl_handler_free(imx477->sd.ctrl_handler);
+	mutex_destroy(&imx477->mutex);
+}
+
+static int imx477_check_hwcfg(struct device *dev)
+{
+	struct fwnode_handle *endpoint;
+	struct v4l2_fwnode_endpoint ep_cfg = {
+		.bus_type = V4L2_MBUS_CSI2_DPHY
+	};
+	int ret = -EINVAL;
+
+	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+	if (!endpoint) {
+		dev_err(dev, "endpoint node not found\n");
+		return -EINVAL;
+	}
+
+	if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
+		dev_err(dev, "could not parse endpoint\n");
+		goto error_out;
+	}
+
+	/* Check the number of MIPI CSI2 data lanes */
+	if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
+		dev_err(dev, "only 2 data lanes are currently supported\n");
+		goto error_out;
+	}
+
+	/* Check the link frequency set in device tree */
+	if (!ep_cfg.nr_of_link_frequencies) {
+		dev_err(dev, "link-frequency property not found in DT\n");
+		goto error_out;
+	}
+
+	if (ep_cfg.nr_of_link_frequencies != 1 ||
+	    ep_cfg.link_frequencies[0] != IMX477_DEFAULT_LINK_FREQ) {
+		dev_err(dev, "Link frequency not supported: %lld\n",
+			ep_cfg.link_frequencies[0]);
+		goto error_out;
+	}
+
+	ret = 0;
+
+error_out:
+	v4l2_fwnode_endpoint_free(&ep_cfg);
+	fwnode_handle_put(endpoint);
+
+	return ret;
+}
+
+static int imx477_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct imx477 *imx477;
+	int ret;
+
+	imx477 = devm_kzalloc(&client->dev, sizeof(*imx477), GFP_KERNEL);
+	if (!imx477)
+		return -ENOMEM;
+
+	v4l2_i2c_subdev_init(&imx477->sd, client, &imx477_subdev_ops);
+
+	/* Check the hardware configuration in device tree */
+	if (imx477_check_hwcfg(dev))
+		return -EINVAL;
+
+	/* Get system clock (xclk) */
+	imx477->xclk = devm_clk_get(dev, NULL);
+	if (IS_ERR(imx477->xclk)) {
+		dev_err(dev, "failed to get xclk\n");
+		return PTR_ERR(imx477->xclk);
+	}
+
+	imx477->xclk_freq = clk_get_rate(imx477->xclk);
+	if (imx477->xclk_freq != IMX477_XCLK_FREQ) {
+		dev_err(dev, "xclk frequency not supported: %d Hz\n",
+			imx477->xclk_freq);
+		return -EINVAL;
+	}
+
+	ret = imx477_get_regulators(imx477);
+	if (ret) {
+		dev_err(dev, "failed to get regulators\n");
+		return ret;
+	}
+
+	/* Request optional enable pin */
+	imx477->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+						     GPIOD_OUT_HIGH);
+
+	/*
+	 * The sensor must be powered for imx477_identify_module()
+	 * to be able to read the CHIP_ID register
+	 */
+	ret = imx477_power_on(dev);
+	if (ret)
+		return ret;
+
+	ret = imx477_identify_module(imx477);
+	if (ret)
+		goto error_power_off;
+
+	/* Initialize default format */
+	imx477_set_default_format(imx477);
+
+	/* Enable runtime PM and turn off the device */
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_idle(dev);
+
+	/* This needs the pm runtime to be registered. */
+	ret = imx477_init_controls(imx477);
+	if (ret)
+		goto error_power_off;
+
+	/* Initialize subdev */
+	imx477->sd.internal_ops = &imx477_internal_ops;
+	imx477->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+			    V4L2_SUBDEV_FL_HAS_EVENTS;
+	imx477->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+	/* Initialize source pads */
+	imx477->pad[IMAGE_PAD].flags = MEDIA_PAD_FL_SOURCE;
+	imx477->pad[METADATA_PAD].flags = MEDIA_PAD_FL_SOURCE;
+
+	ret = media_entity_pads_init(&imx477->sd.entity, NUM_PADS, imx477->pad);
+	if (ret) {
+		dev_err(dev, "failed to init entity pads: %d\n", ret);
+		goto error_handler_free;
+	}
+
+	ret = v4l2_async_register_subdev_sensor(&imx477->sd);
+	if (ret < 0) {
+		dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
+		goto error_media_entity;
+	}
+
+	return 0;
+
+error_media_entity:
+	media_entity_cleanup(&imx477->sd.entity);
+
+error_handler_free:
+	imx477_free_controls(imx477);
+
+error_power_off:
+	pm_runtime_disable(&client->dev);
+	pm_runtime_set_suspended(&client->dev);
+	imx477_power_off(&client->dev);
+
+	return ret;
+}
+
+static int imx477_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx477 *imx477 = to_imx477(sd);
+
+	v4l2_async_unregister_subdev(sd);
+	media_entity_cleanup(&sd->entity);
+	imx477_free_controls(imx477);
+
+	pm_runtime_disable(&client->dev);
+	if (!pm_runtime_status_suspended(&client->dev))
+		imx477_power_off(&client->dev);
+	pm_runtime_set_suspended(&client->dev);
+
+	return 0;
+}
+
+static const struct of_device_id imx477_dt_ids[] = {
+	{ .compatible = "sony,imx477" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx477_dt_ids);
+
+static const struct dev_pm_ops imx477_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(imx477_suspend, imx477_resume)
+	SET_RUNTIME_PM_OPS(imx477_power_off, imx477_power_on, NULL)
+};
+
+static struct i2c_driver imx477_i2c_driver = {
+	.driver = {
+		.name = "imx477",
+		.of_match_table	= imx477_dt_ids,
+		.pm = &imx477_pm_ops,
+	},
+	.probe_new = imx477_probe,
+	.remove = imx477_remove,
+};
+
+module_i2c_driver(imx477_i2c_driver);
+
+MODULE_AUTHOR("Naushir Patuck <naush@raspberrypi.com>");
+MODULE_DESCRIPTION("Sony IMX477 sensor driver");
+MODULE_LICENSE("GPL v2");