[v4,2/2] media: i2c: Add driver for ST VD55G1 camera sensor

The VD55G1 is a monochrome global shutter camera with a 804x704 maximum
resolution with RAW8 and RAW10 bytes per pixel.
The driver supports :
- Auto exposure from the sensor, or manual exposure mode
- HDR subtraction mode, allowing edge detection and background removal
- Auto exposure cold start, using configuration values from last stream
to start the next one
- LED GPIOs for illumination
- Most standard camera sensor features (hblank, vblank, test patterns,
again, dgain, hflip, vflip, auto exposure bias, etc.)
Add driver source code to MAINTAINERS file.

Signed-off-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
---
 MAINTAINERS                |    2 +
 drivers/media/i2c/Kconfig  |   11 +
 drivers/media/i2c/Makefile |    1 +
 drivers/media/i2c/vd55g1.c | 1993 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 2007 insertions(+)

Hi Benjamin,

Thanks for the set.

On Wed, Apr 02, 2025 at 03:50:07PM +0200, Benjamin Mugnier wrote:
> The VD55G1 is a monochrome global shutter camera with a 804x704 maximum
> resolution with RAW8 and RAW10 bytes per pixel.
> The driver supports :
> - Auto exposure from the sensor, or manual exposure mode
> - HDR subtraction mode, allowing edge detection and background removal
> - Auto exposure cold start, using configuration values from last stream
> to start the next one
> - LED GPIOs for illumination
> - Most standard camera sensor features (hblank, vblank, test patterns,
> again, dgain, hflip, vflip, auto exposure bias, etc.)
> Add driver source code to MAINTAINERS file.
> 
> Signed-off-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
> ---
>  MAINTAINERS                |    2 +
>  drivers/media/i2c/Kconfig  |   11 +
>  drivers/media/i2c/Makefile |    1 +
>  drivers/media/i2c/vd55g1.c | 1993 ++++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 2007 insertions(+)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 4f5e9005063a157de69e81b10f8def9da9e6c04c..9991c5f63e3d49a4e7a6ef0071f3b81825e84eee 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22416,6 +22416,7 @@ M:	Sylvain Petinot <sylvain.petinot@foss.st.com>
>  L:	linux-media@vger.kernel.org
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml
> +F:	drivers/media/i2c/vd55g1.c
>  
>  ST VGXY61 DRIVER
>  M:	Benjamin Mugnier <benjamin.mugnier@foss.st.com>
> @@ -24801,6 +24802,7 @@ F:	drivers/media/i2c/mt*
>  F:	drivers/media/i2c/og*
>  F:	drivers/media/i2c/ov*
>  F:	drivers/media/i2c/s5*
> +F:	drivers/media/i2c/vd55g1.c
>  F:	drivers/media/i2c/vgxy61.c
>  
>  VF610 NAND DRIVER
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 8ba096b8ebca241239a327ab3af0d9bce3ee9962..d3de318f4b4732c677e2f357d05d2ae7af5cd23b 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -690,6 +690,17 @@ config VIDEO_S5K6A3
>  	  This is a V4L2 sensor driver for Samsung S5K6A3 raw
>  	  camera sensor.
>  
> +config VIDEO_VD55G1
> +	tristate "ST VD55G1 sensor support"
> +	select V4L2_CCI_I2C
> +	depends on OF && GPIOLIB

Does the driver really depend on OF? There are a few of_*() functions being
used, see comments below.

> +	help
> +	  This is a Video4Linux2 sensor driver for the ST VD55G1
> +	  camera sensor.
> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called vd55g1.
> +
>  config VIDEO_VGXY61
>  	tristate "ST VGXY61 sensor support"
>  	select V4L2_CCI_I2C
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index fbb988bd067a1b8b577248811f18a15671eb8932..56405c0334aead46c9f5b12fefba24a52f733499 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -152,6 +152,7 @@ obj-$(CONFIG_VIDEO_TW9910) += tw9910.o
>  obj-$(CONFIG_VIDEO_UDA1342) += uda1342.o
>  obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
>  obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
> +obj-$(CONFIG_VIDEO_VD55G1) += vd55g1.o
>  obj-$(CONFIG_VIDEO_VGXY61) += vgxy61.o
>  obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o
>  obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
> diff --git a/drivers/media/i2c/vd55g1.c b/drivers/media/i2c/vd55g1.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..26bb2412a41f8a7624836da7cd0ccb6000cbfcf2
> --- /dev/null
> +++ b/drivers/media/i2c/vd55g1.c
> @@ -0,0 +1,1993 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Driver for VD55G1 global shutter sensor family driver
> + *
> + * Copyright (C) 2025 STMicroelectronics SA
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/i2c.h>
> +#include <linux/iopoll.h>
> +#include <linux/module.h>
> +#include <linux/pm_runtime.h>

You should include linux/property.h as well.

> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/unaligned.h>
> +#include <linux/units.h>
> +
> +#include <media/mipi-csi2.h>
> +#include <media/v4l2-async.h>
> +#include <media/v4l2-cci.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-subdev.h>
> +
> +/* Register Map */
> +#define VD55G1_REG_MODEL_ID				CCI_REG32_LE(0x0000)
> +#define VD55G1_MODEL_ID					0x53354731
> +#define VD55G1_REG_REVISION				CCI_REG16_LE(0x0004)
> +#define VD55G1_REVISION_CCB				0x2020
> +#define VD55G1_REG_FWPATCH_REVISION			CCI_REG16_LE(0x0012)
> +#define VD55G1_REG_FWPATCH_START_ADDR			CCI_REG8(0x2000)
> +#define VD55G1_REG_SYSTEM_FSM				CCI_REG8(0x001c)
> +#define VD55G1_SYSTEM_FSM_READY_TO_BOOT			0x01
> +#define VD55G1_SYSTEM_FSM_SW_STBY			0x02
> +#define VD55G1_SYSTEM_FSM_STREAMING			0x03
> +#define VD55G1_REG_BOOT					CCI_REG8(0x0200)
> +#define VD55G1_BOOT_PATCH_SETUP				2
> +#define VD55G1_REG_STBY					CCI_REG8(0x0201)
> +#define VD55G1_STBY_START_STREAM			1
> +#define VD55G1_REG_STREAMING				CCI_REG8(0x0202)
> +#define VD55G1_STREAMING_STOP_STREAM			1
> +#define VD55G1_REG_EXT_CLOCK				CCI_REG32_LE(0x0220)
> +#define VD55G1_REG_LINE_LENGTH				CCI_REG16_LE(0x0300)
> +#define VD55G1_REG_ORIENTATION				CCI_REG8(0x0302)
> +#define VD55G1_REG_FORMAT_CTRL				CCI_REG8(0x030a)
> +#define VD55G1_REG_OIF_CTRL				CCI_REG16_LE(0x030c)
> +#define VD55G1_REG_ISL_ENABLE				CCI_REG16_LE(0x326)
> +#define VD55G1_REG_OIF_IMG_CTRL				CCI_REG8(0x030f)
> +#define VD55G1_REG_MIPI_DATA_RATE			CCI_REG32_LE(0x0224)
> +#define VD55G1_REG_PATGEN_CTRL				CCI_REG16_LE(0x0304)
> +#define VD55G1_PATGEN_TYPE_SHIFT			4
> +#define VD55G1_PATGEN_ENABLE				BIT(0)
> +#define VD55G1_REG_MANUAL_ANALOG_GAIN			CCI_REG8(0x0501)
> +#define VD55G1_REG_MANUAL_COARSE_EXPOSURE		CCI_REG16_LE(0x0502)
> +#define VD55G1_REG_MANUAL_DIGITAL_GAIN			CCI_REG16_LE(0x0504)
> +#define VD55G1_REG_APPLIED_COARSE_EXPOSURE		CCI_REG16_LE(0x00e8)
> +#define VD55G1_REG_APPLIED_ANALOG_GAIN			CCI_REG16_LE(0x00ea)
> +#define VD55G1_REG_APPLIED_DIGITAL_GAIN			CCI_REG16_LE(0x00ec)
> +#define VD55G1_REG_AE_FORCE_COLDSTART			CCI_REG16_LE(0x0308)
> +#define VD55G1_REG_AE_COLDSTART_EXP_TIME		CCI_REG32_LE(0x0374)
> +#define VD55G1_REG_READOUT_CTRL				CCI_REG8(0x052e)
> +#define VD55G1_REG_DARKCAL_CTRL				CCI_REG8(0x032a)
> +#define VD55G1_DARKCAL_BYPASS				0
> +#define VD55G1_DARKCAL_AUTO				1
> +#define VD55G1_REG_DUSTER_CTRL				CCI_REG8(0x03ea)
> +#define VD55G1_DUSTER_ENABLE				BIT(0)
> +#define VD55G1_DUSTER_DISABLE				0
> +#define VD55G1_DUSTER_DYN_ENABLE			BIT(1)
> +#define VD55G1_DUSTER_RING_ENABLE			BIT(4)
> +#define VD55G1_REG_AE_TARGET_PERCENTAGE			CCI_REG8(0x0486)
> +#define VD55G1_REG_NEXT_CTX				CCI_REG16_LE(0x03e4)
> +#define VD55G1_REG_EXPOSURE_USE_CASES			CCI_REG8(0x0312)
> +#define VD55G1_EXPOSURE_USE_CASES_MULTI_CONTEXT		BIT(2)
> +#define VD55G1_REG_EXPOSURE_MAX_COARSE			CCI_REG16_LE(0x0372)
> +#define VD55G1_EXPOSURE_MAX_COARSE_DEF			0x7fff
> +#define VD55G1_EXPOSURE_MAX_COARSE_SUB			446
> +#define VD55G1_REG_CTX_REPEAT_COUNT_CTX0		CCI_REG16_LE(0x03dc)
> +#define VD55G1_REG_CTX_REPEAT_COUNT_CTX1		CCI_REG16_LE(0x03de)
> +
> +#define VD55G1_REG_EXP_MODE(ctx) \
> +	CCI_REG8(0x0500 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_FRAME_LENGTH(ctx) \
> +	CCI_REG32_LE(0x050c + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_X_START(ctx) \
> +	CCI_REG16_LE(0x0514 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_X_WIDTH(ctx) \
> +	CCI_REG16_LE(0x0516 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_Y_START(ctx) \
> +	CCI_REG16_LE(0x0510 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_Y_HEIGHT(ctx) \
> +	CCI_REG16_LE(0x0512 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_GPIO_0_CTRL(ctx) \
> +	CCI_REG8(0x051d + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_REG_VT_MODE(ctx) \
> +	CCI_REG8(0x0536 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_VT_MODE_NORMAL 0
> +#define VD55G1_VT_MODE_SUBTRACTION 1
> +#define VD55G1_REG_MASK_FRAME_CTRL(ctx) \
> +	CCI_REG8(0x0537 + VD55G1_CTX_OFFSET * (ctx))
> +#define VD55G1_MASK_FRAME_CTRL_OUTPUT 0
> +#define VD55G1_MASK_FRAME_CTRL_MASK 1
> +#define VD55G1_REG_EXPOSURE_INSTANCE(ctx) \
> +	CCI_REG32_LE(0x52D + VD55G1_CTX_OFFSET * (ctx))
> +
> +#define VD55G1_WIDTH					804
> +#define VD55G1_HEIGHT					704
> +#define VD55G1_DEFAULT_MODE				0
> +#define VD55G1_NB_GPIOS					4
> +#define VD55G1_MEDIA_BUS_FMT_DEF			MEDIA_BUS_FMT_Y8_1X8
> +#define VD55G1_DGAIN_DEF				256
> +#define VD55G1_AGAIN_DEF				19
> +#define VD55G1_EXPO_MAX_TERM				64
> +#define VD55G1_EXPO_DEF					500
> +#define VD55G1_LINE_LENGTH_MIN				1128
> +#define VD55G1_LINE_LENGTH_SUB_MIN			1344
> +#define VD55G1_VBLANK_MIN				86
> +#define VD55G1_VBLANK_MAX				0xffff
> +#define VD55G1_FRAME_LENGTH_DEF				1860 /* 60 fps */
> +#define VD55G1_MIPI_MARGIN				900
> +#define VD55G1_CTX_OFFSET				0x50
> +#define VD55G1_FWPATCH_REVISION_MAJOR			2
> +#define VD55G1_FWPATCH_REVISION_MINOR			9
> +
> +static const u8 patch_array[] = {
> +0x44, 0x03, 0x09, 0x02, 0xe6, 0x01, 0x42, 0x00, 0xea, 0x01, 0x42, 0x00, 0xf0,

The array contents should be indented.

> +0x01, 0x42, 0x00, 0xe6, 0x01, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x00, 0x00,
> +0xfa, 0x68, 0x40, 0x00, 0xe8, 0x09, 0xbe, 0x4c, 0x08, 0x00, 0xf2, 0x93, 0xdd,
> +0x1c, 0x00, 0xc0, 0xe2, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x6b,
> +0x80, 0x98, 0x7f, 0xfc, 0xef, 0x11, 0xc1, 0x0f, 0x82, 0x69, 0xbe, 0x0f, 0xac,
> +0x58, 0x40, 0x00, 0xe8, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd, 0x1c, 0x00, 0x40,
> +0xe3, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x84, 0xfa, 0x46, 0x0e, 0xe8, 0xe0,
> +0x08, 0xde, 0x4a, 0x40, 0x84, 0xe0, 0xa5, 0x86, 0xa8, 0x7d, 0xfc, 0xef, 0x6b,
> +0x80, 0x01, 0xbf, 0x28, 0x77, 0x0c, 0xef, 0x0b, 0x0e, 0x21, 0x78, 0x06, 0xc0,
> +0x0b, 0xa5, 0xb5, 0x84, 0x06, 0x42, 0x98, 0xe1, 0x01, 0x81, 0x01, 0x42, 0x38,
> +0xe0, 0x0c, 0xc4, 0x0e, 0x84, 0x46, 0x02, 0x84, 0xe0, 0x0c, 0x84, 0x11, 0x81,
> +0x21, 0x81, 0x31, 0x81, 0x41, 0x81, 0x51, 0x81, 0xc1, 0x81, 0x05, 0x83, 0x0c,
> +0x0c, 0x84, 0xf2, 0x93, 0xdd, 0x06, 0x40, 0x98, 0xe1, 0xc8, 0x80, 0x58, 0x82,
> +0x48, 0xc0, 0x38, 0xc2, 0x29, 0x00, 0x10, 0xe0, 0x19, 0x00, 0x14, 0xe0, 0x09,
> +0x00, 0x38, 0xe0, 0x5f, 0xb8, 0x5f, 0xa8, 0x5f, 0xa6, 0x5f, 0xa4, 0x5f, 0xa2,
> +0x5f, 0xa0, 0x56, 0x41, 0x98, 0xe1, 0x18, 0x82, 0x28, 0x80, 0x38, 0xc0, 0x5f,
> +0xa2, 0x19, 0x00, 0x20, 0xf8, 0x5f, 0xa4, 0x28, 0xc2, 0x5f, 0xa6, 0x39, 0x00,
> +0x10, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x14, 0xe0, 0x5f, 0xa4, 0x29, 0x00, 0x18,
> +0xe0, 0x5f, 0xa6, 0x39, 0x00, 0x40, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x44, 0xe0,
> +0x5f, 0xa4, 0x29, 0x00, 0x1c, 0xe0, 0x5f, 0xa6, 0x39, 0x00, 0x38, 0xe0, 0x5f,
> +0xa2, 0x19, 0x00, 0x20, 0xe0, 0x5f, 0xa4, 0x29, 0x00, 0x24, 0xe0, 0x5f, 0xa6,
> +0x39, 0x00, 0x28, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x2c, 0xe0, 0x5f, 0xa4, 0x29,
> +0x00, 0x30, 0xe0, 0x5f, 0xa6, 0x09, 0x00, 0x34, 0xe0, 0x5f, 0xa2, 0x5f, 0xa4,
> +0x5f, 0xa0, 0x4a, 0x0a, 0xfc, 0xfb, 0xe5, 0x82, 0x08, 0xde, 0x4a, 0x40, 0x88,
> +0xe0, 0xf6, 0x40, 0x00, 0xe0, 0x01, 0x4e, 0x99, 0x78, 0x0a, 0xc0, 0x85, 0x80,
> +0x98, 0x40, 0x00, 0xe8, 0x35, 0x81, 0xa8, 0x40, 0x00, 0xe8, 0x0b, 0x8c, 0x0c,
> +0x0c, 0x84, 0xf2, 0xd5, 0xed, 0x83, 0xc1, 0x13, 0xc5, 0x93, 0xdd, 0xc3, 0xc1,
> +0x83, 0xc1, 0x13, 0xc3, 0x93, 0xdd, 0xc3, 0xc1, 0x4c, 0x04, 0x04, 0xfa, 0xc6,
> +0x0f, 0x94, 0xe0, 0x19, 0x0e, 0xc9, 0x65, 0x01, 0xc0, 0x28, 0xde, 0x0a, 0x42,
> +0x80, 0xe0, 0x24, 0x02, 0x00, 0xfc, 0x16, 0xde, 0xa5, 0x8a, 0x19, 0x00, 0xb8,
> +0xe0, 0x10, 0x02, 0x0c, 0xec, 0x1d, 0xe6, 0x14, 0x02, 0x88, 0x80, 0x4e, 0x04,
> +0x01, 0x00, 0x10, 0x80, 0x25, 0x02, 0x08, 0x9c, 0x86, 0x02, 0x00, 0x80, 0x08,
> +0x44, 0x00, 0x98, 0x55, 0x81, 0x11, 0x85, 0x45, 0x81, 0x11, 0x89, 0x25, 0x81,
> +0x11, 0x83, 0x2b, 0x00, 0x24, 0xe0, 0x64, 0xc2, 0x0b, 0x84, 0x08, 0x51, 0x00,
> +0xef, 0x2b, 0x80, 0x01, 0x83, 0x1b, 0x8c, 0x38, 0x7d, 0x5c, 0xef, 0x18, 0xde,
> +0x0b, 0xa1, 0x25, 0x82, 0x0b, 0x0e, 0x88, 0xf9, 0x0a, 0x00, 0x00, 0xe8, 0x10,
> +0x42, 0x04, 0x9c, 0x11, 0x4e, 0x0c, 0x80, 0x10, 0x40, 0x04, 0xf0, 0x4e, 0x05,
> +0x01, 0x60, 0x10, 0xc0, 0x06, 0x88, 0x10, 0x40, 0xf8, 0xf3, 0x06, 0xde, 0x4c,
> +0x0c, 0x04, 0xf2, 0x93, 0xdd, 0x0c, 0x04, 0x1c, 0xfe, 0xf6, 0x0f, 0x94, 0xe0,
> +0x38, 0x9c, 0x46, 0x51, 0xfc, 0xe0, 0x46, 0x49, 0x38, 0xe2, 0x30, 0x46, 0xf8,
> +0xf3, 0x36, 0x9c, 0xc6, 0x46, 0x0c, 0xe1, 0x34, 0x8c, 0x94, 0xa0, 0x4e, 0xa0,
> +0x39, 0x06, 0x80, 0xe0, 0x4a, 0x46, 0x94, 0xe0, 0x05, 0x8c, 0x6a, 0x40, 0x80,
> +0xe0, 0x2c, 0x0c, 0x00, 0xe2, 0x0b, 0x8c, 0xb8, 0x7c, 0x5c, 0xef, 0x0b, 0x8c,
> +0x9e, 0xa0, 0xf8, 0x40, 0x60, 0xef, 0x0b, 0xa1, 0x5a, 0x40, 0x80, 0xe0, 0x65,
> +0x88, 0x28, 0x02, 0x01, 0x40, 0x00, 0x80, 0x2a, 0x42, 0x9c, 0xe1, 0x28, 0x49,
> +0x60, 0xef, 0x96, 0x4d, 0x9c, 0xe1, 0x01, 0x81, 0x06, 0x98, 0xd5, 0x81, 0x09,
> +0x0e, 0xa1, 0x64, 0x01, 0xc0, 0x4a, 0x40, 0x88, 0xe0, 0x85, 0x80, 0xb8, 0x77,
> +0xfc, 0xef, 0x35, 0x81, 0xc8, 0x77, 0xfc, 0xef, 0x08, 0x98, 0x4a, 0x00, 0xfc,
> +0xfb, 0x55, 0xfc, 0xe8, 0x4a, 0x60, 0xef, 0x1a, 0x44, 0x9c, 0xe1, 0x35, 0x81,
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> +0x84, 0x21, 0x8b, 0x2c, 0x84, 0x14, 0x80, 0x2c, 0x84, 0x14, 0x82, 0x2c, 0x84,
> +0x15, 0x00, 0x10, 0xe0, 0x21, 0xa1, 0x21, 0x42, 0x10, 0xe0, 0x05, 0x00, 0x14,
> +0xe0, 0x01, 0x88, 0x75, 0x83, 0x21, 0x85, 0x2c, 0x84, 0x14, 0x80, 0x06, 0x46,
> +0x00, 0xe0, 0x2c, 0x84, 0x14, 0x82, 0x2c, 0x84, 0x14, 0xc0, 0x21, 0xa1, 0x21,
> +0x42, 0x20, 0xe0, 0x14, 0xc2, 0x31, 0x42, 0x20, 0xe0, 0x15, 0x00, 0x10, 0xe0,
> +0x21, 0x42, 0x20, 0xe0, 0x05, 0x00, 0x14, 0xe0, 0x01, 0x90, 0x06, 0x42, 0x00,
> +0xe0, 0x16, 0x80, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x7c, 0xfa, 0x4a, 0x40,
> +0x80, 0xe0, 0xf0, 0x1e, 0x30, 0xec, 0xe5, 0x82, 0xa6, 0x40, 0x00, 0xe1, 0x1a,
> +0x80, 0x2a, 0xc0, 0x3a, 0xc2, 0x13, 0x40, 0x10, 0xe0, 0x1a, 0x82, 0x23, 0x40,
> +0x18, 0xe0, 0x33, 0x40, 0x1c, 0xe0, 0x13, 0x40, 0x14, 0xe0, 0xf8, 0x61, 0x68,
> +0xef, 0xc6, 0x13, 0x00, 0xe1, 0x15, 0x12, 0x28, 0xf8, 0x0b, 0x02, 0x2c, 0xe0,
> +0x1b, 0x02, 0x24, 0xe0, 0x8a, 0x00, 0xa5, 0x64, 0x03, 0xc0, 0x35, 0x82, 0x0a,
> +0x4e, 0x9c, 0xe1, 0x1a, 0x03, 0x11, 0x6f, 0x02, 0xc0, 0xe8, 0x13, 0x01, 0x20,
> +0x00, 0xc0, 0x1f, 0xa0, 0x5a, 0x42, 0x80, 0xe0, 0x0a, 0x4e, 0x9c, 0xe1, 0x68,
> +0x13, 0x00, 0xa0, 0x09, 0x12, 0x78, 0xf8, 0xa1, 0x81, 0xf0, 0x02, 0x10, 0xe4,
> +0x07, 0xc4, 0x0c, 0xfc, 0xf0, 0x00, 0x20, 0xe4, 0xa6, 0x91, 0xa8, 0x53, 0x74,
> +0xef, 0x05, 0x12, 0x30, 0xf8, 0x25, 0x12, 0x28, 0xf8, 0x61, 0x87, 0x09, 0x00,
> +0x48, 0xe0, 0x81, 0x85, 0x09, 0x86, 0x0b, 0xa7, 0x26, 0x0c, 0x00, 0xc0, 0x0b,
> +0xa1, 0x0b, 0x04, 0x28, 0xe0, 0x16, 0x0c, 0x00, 0x80, 0x03, 0x52, 0x04, 0xf8,
> +0x0b, 0x04, 0x20, 0xe0, 0x0c, 0xa6, 0x1b, 0x04, 0x2c, 0xe0, 0x3b, 0x04, 0x28,
> +0xe0, 0x4b, 0x04, 0x20, 0xe0, 0x13, 0x86, 0x3b, 0x04, 0x24, 0xe0, 0x10, 0x0a,
> +0x04, 0xec, 0x1a, 0xfc, 0x33, 0x88, 0x30, 0x06, 0x04, 0xec, 0x12, 0x4e, 0x94,
> +0xf0, 0x32, 0x48, 0x84, 0xf0, 0x4c, 0xe4, 0x7c, 0xa4, 0xcb, 0x04, 0x28, 0xe0,
> +0x14, 0x08, 0x84, 0xe1, 0xcd, 0xc9, 0xc2, 0x58, 0x90, 0x91, 0x42, 0x4e, 0x94,
> +0x90, 0xc3, 0x52, 0x04, 0x98, 0x73, 0x52, 0x00, 0x80, 0x5b, 0x04, 0x20, 0xe0,
> +0x5d, 0xc9, 0x52, 0x40, 0x90, 0x91, 0x42, 0x48, 0x8c, 0x90, 0x03, 0x52, 0x04,
> +0x80, 0x43, 0x52, 0x08, 0x80, 0x3b, 0x04, 0x2c, 0xe0, 0x49, 0x04, 0xb8, 0xe0,
> +0x33, 0x52, 0x1c, 0xf8, 0x2b, 0x04, 0x24, 0xe0, 0x4b, 0xab, 0x23, 0x52, 0x18,
> +0xf8, 0x65, 0x8a, 0x4b, 0xa9, 0xe5, 0x90, 0x4b, 0xa7, 0x22, 0x44, 0x84, 0xd0,
> +0x32, 0x46, 0x84, 0xd0, 0x33, 0x52, 0x1c, 0xd8, 0x23, 0x52, 0x18, 0xd8, 0x95,
> +0x96, 0x20, 0x44, 0xf9, 0x73, 0xff, 0xc0, 0x27, 0xc3, 0x23, 0x82, 0x23, 0x52,
> +0x18, 0xf8, 0x24, 0x02, 0x80, 0xfb, 0x04, 0x00, 0x80, 0xfb, 0x2b, 0x8c, 0x58,
> +0x52, 0x74, 0xef, 0x1b, 0x12, 0x1c, 0xf8, 0x2a, 0xfc, 0x0c, 0xe4, 0x17, 0xc3,
> +0x13, 0x84, 0x13, 0x52, 0x1c, 0xf8, 0x0b, 0x12, 0x04, 0xf8, 0x14, 0x02, 0x80,
> +0xfb, 0x2b, 0x8c, 0x68, 0x51, 0x74, 0xef, 0xc5, 0x87, 0x20, 0x44, 0xe1, 0x73,
> +0xff, 0xc0, 0x27, 0xc7, 0x23, 0x82, 0x23, 0x52, 0x18, 0xf8, 0x24, 0x02, 0x80,
> +0xfb, 0x04, 0x00, 0x80, 0xfb, 0x2b, 0x8c, 0x78, 0x57, 0x74, 0xef, 0x1b, 0x12,
> +0x1c, 0xf8, 0x2a, 0xfc, 0x0c, 0xe4, 0x17, 0xc7, 0x13, 0x84, 0x13, 0x52, 0x1c,
> +0xf8, 0x0b, 0x12, 0x04, 0xf8, 0x14, 0x02, 0x80, 0xfb, 0x2b, 0x8c, 0x88, 0x56,
> +0x74, 0xef, 0xe5, 0x83, 0x20, 0x44, 0xf1, 0x73, 0xff, 0xc0, 0x27, 0xc5, 0x23,
> +0x82, 0x23, 0x52, 0x18, 0xf8, 0x24, 0x02, 0x80, 0xfb, 0x04, 0x00, 0x80, 0xfb,
> +0x2b, 0x8c, 0x18, 0x52, 0x74, 0xef, 0x1b, 0x12, 0x1c, 0xf8, 0x2a, 0xfc, 0x0c,
> +0xe4, 0x17, 0xc5, 0x13, 0x84, 0x13, 0x52, 0x1c, 0xf8, 0x0b, 0x12, 0x04, 0xf8,
> +0x14, 0x02, 0x80, 0xfb, 0x2b, 0x8c, 0x28, 0x51, 0x74, 0xef, 0x7b, 0x80, 0x7c,
> +0xa4, 0x08, 0x91, 0xa3, 0x52, 0x1c, 0xe0, 0xa3, 0x52, 0x24, 0xe0, 0x0b, 0xa1,
> +0x83, 0x52, 0x1c, 0x80, 0x83, 0x52, 0x24, 0x80, 0x89, 0x12, 0x78, 0xf8, 0xf6,
> +0x57, 0xfc, 0xef, 0x6b, 0x12, 0x1c, 0xf8, 0xab, 0x12, 0x18, 0xf8, 0xd6, 0x57,
> +0xfc, 0x8f, 0x8b, 0xa3, 0xa0, 0x40, 0x00, 0x9c, 0xa5, 0x86, 0x64, 0x00, 0x80,
> +0xfb, 0x1b, 0x90, 0xf8, 0x7d, 0xf8, 0xee, 0x6b, 0x80, 0xa4, 0x00, 0x80, 0xfb,
> +0x1b, 0x90, 0x98, 0x7d, 0xf8, 0xee, 0x15, 0x12, 0x28, 0xf8, 0x19, 0x02, 0xb8,
> +0xe0, 0x1b, 0xad, 0x95, 0x82, 0x1a, 0xa6, 0xa0, 0x44, 0xf9, 0x73, 0xff, 0xc0,
> +0x27, 0xc3, 0x13, 0x94, 0x10, 0x02, 0x08, 0xec, 0x1c, 0xe4, 0x23, 0x52, 0x18,
> +0xf8, 0x1b, 0x12, 0x04, 0xf8, 0x03, 0x96, 0x03, 0x52, 0x28, 0xe0, 0x1c, 0xe6,
> +0x0a, 0xa6, 0x1a, 0xe4, 0x63, 0x96, 0x63, 0x52, 0x20, 0xe0, 0x73, 0x52, 0x10,
> +0xe0, 0x03, 0x52, 0x14, 0xe0, 0x13, 0x52, 0x18, 0xe0, 0x98, 0x52, 0x74, 0xef,
> +0x09, 0x12, 0x8c, 0xe0, 0x0b, 0xa1, 0x01, 0x81, 0x01, 0x52, 0x90, 0xe0, 0x65,
> +0x82, 0x05, 0x12, 0x30, 0xf8, 0x09, 0x00, 0xa8, 0xe0, 0x0a, 0x00, 0x0c, 0xf8,
> +0x16, 0x00, 0x00, 0xc0, 0x01, 0x52, 0x90, 0xc0, 0x46, 0x41, 0x84, 0xe0, 0x0a,
> +0x80, 0x0a, 0x4e, 0x9c, 0xe9, 0x1a, 0x00, 0x08, 0xe0, 0x38, 0x01, 0x01, 0x20,
> +0x00, 0xc0, 0x0b, 0x12, 0x1c, 0xe0, 0x1b, 0x12, 0x24, 0xe0, 0x2b, 0x12, 0x28,
> +0xe0, 0x03, 0x52, 0x2c, 0xe0, 0x0b, 0x12, 0x20, 0xe0, 0x13, 0x52, 0x34, 0xe0,
> +0x23, 0x52, 0x38, 0xe0, 0x03, 0x52, 0x30, 0xe0, 0x0c, 0x00, 0x00, 0xe2, 0xf1,
> +0x98, 0x0c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd, 0x13, 0xa9, 0x00, 0x00, 0xa8, 0xc1,
> +0x40, 0x00, 0x68, 0x04, 0xa0, 0xe0, 0x40, 0x6c, 0x40, 0x00, 0xe8, 0x34, 0xc8,
> +0xe0, 0xfc, 0x91, 0x40, 0x00, 0x68, 0x1f, 0xb8, 0xe0, 0x30, 0x16, 0x41, 0x00,
> +0x28, 0x39, 0x74, 0xe0, 0xb0, 0x7e, 0x40, 0x00, 0xe8, 0x38, 0xc0, 0xe0, 0x30,
> +0x04, 0x41, 0x00, 0x48, 0x1b, 0x80, 0xe0, 0x30, 0x2e, 0x40, 0x00, 0x88, 0x0c,
> +0xec, 0xe0, 0x10, 0x9f, 0x40, 0x00, 0x88, 0x08, 0xb4, 0xe0, 0x10, 0x01, 0x41,
> +0x00, 0x68, 0x01, 0x84, 0xe0, 0x54, 0xd6, 0x40, 0x00, 0xc8, 0x1a, 0x98, 0xe0,
> +0xd0, 0xc8, 0x40, 0x00, 0x68, 0x08, 0xa0, 0xe0, 0x80, 0xdb, 0x40, 0x00, 0xe8,
> +0x35, 0x94, 0xe0, 0x74, 0xff, 0x40, 0x00, 0xa8, 0x11, 0x80, 0xe0, 0xf8, 0x89,
> +0x40, 0x00, 0x88, 0x16, 0xbc, 0xe0, 0x00, 0x90, 0x40, 0x00, 0x08, 0x35, 0xb8,
> +0xe0, 0x7c, 0x73, 0x40, 0x00, 0x88, 0x1b, 0xc8, 0xe0, 0xf4, 0xff, 0x40, 0x00,
> +0x68, 0x39, 0x80, 0xe0, 0xa4, 0xa4, 0x40, 0x00, 0xa8, 0x16, 0xb0, 0xe0, 0x50,
> +0xc9, 0x40, 0x00, 0x28, 0x3a, 0x98, 0xe0, 0x00, 0xb9, 0x00, 0x00, 0xb6, 0x85,
> +0x00, 0x00,
> +};
> +
> +static const char * const vd55g1_tp_menu[] = {
> +	"Disabled",
> +	"Dgrey",
> +	"PN28",
> +};
> +
> +static const s64 vd55g1_ev_bias_menu[] = {
> +	-3000, -2500, -2000, -1500, -1000, -500,
> +	    0,
> +	  500,  1000,  1500,  2000,  2500, 3000,
> +};
> +
> +static const char * const vd55g1_hdr_menu[] = {
> +	"No HDR",
> +	/*
> +	 * This mode acquires 2 frames on the sensor, the first one is ditched
> +	 * out and only used for auto exposure data, the second one is output to
> +	 * the host
> +	 */
> +	"Internal subtraction",
> +};
> +
> +static const char * const vd55g1_supply_name[] = {
> +	"vcore",
> +	"vddio",
> +	"vana",
> +};
> +
> +/* Will be filled on device tree parse */
> +static u64 link_freq[1];

This doesn't seem to belong here (it's device specific!).

> +
> +enum vd55g1_hdr_mode {
> +	VD55G1_NO_HDR,
> +	VD55G1_HDR_SUB,
> +};
> +
> +enum vd55g1_bin_mode {
> +	VD55G1_BIN_MODE_NORMAL,
> +	VD55G1_BIN_MODE_DIGITAL_X2,
> +	VD55G1_BIN_MODE_DIGITAL_X4,
> +};
> +
> +enum vd55g1_gpio_mode {
> +	VD55G1_GPIO_MODE_IN = 0x01,
> +	VD55G1_GPIO_MODE_STROBE = 0x02,
> +};
> +
> +struct vd55g1_mode {
> +	u32 width;
> +	u32 height;
> +};
> +
> +struct vd55g1_fmt_desc {
> +	u32 code;
> +	u8 bpp;
> +	u8 data_type;
> +};
> +
> +static const struct vd55g1_fmt_desc vd55g1_mbus_codes[] = {
> +	{
> +		.code = MEDIA_BUS_FMT_Y8_1X8,
> +		.bpp = 8,
> +		.data_type = MIPI_CSI2_DT_RAW8,
> +	},
> +	{
> +		.code = MEDIA_BUS_FMT_Y10_1X10,
> +		.bpp = 10,
> +		.data_type = MIPI_CSI2_DT_RAW10,
> +	},
> +};
> +
> +static const struct vd55g1_mode vd55g1_supported_modes[] = {
> +	{
> +		.width = VD55G1_WIDTH,
> +		.height = VD55G1_HEIGHT,
> +	},
> +	{
> +		.width = 800,
> +		.height = VD55G1_HEIGHT,
> +	},
> +	{
> +		.width = 800,
> +		.height = 600,
> +	},
> +	{
> +		.width = 640,
> +		.height = 480,
> +	},
> +	{
> +		.width = 320,
> +		.height = 240,
> +	},
> +};
> +
> +enum vd55g1_expo_state {
> +	VD55G1_EXP_AUTO,
> +	VD55G1_EXP_FREEZE,
> +	VD55G1_EXP_MANUAL,
> +	VD55G1_EXP_SINGLE_STEP,
> +	VD55G1_EXP_BYPASS,
> +};
> +
> +struct vblank_limits {
> +	u16 min;
> +	u16 def;
> +	u16 max;
> +};
> +
> +struct vd55g1 {
> +	struct i2c_client *i2c_client;
> +	struct v4l2_subdev sd;
> +	struct media_pad pad;
> +	struct regulator_bulk_data supplies[ARRAY_SIZE(vd55g1_supply_name)];
> +	struct gpio_desc *reset_gpio;
> +	struct clk *xclk;
> +	struct regmap *regmap;
> +	u32 xclk_freq;
> +	u16 oif_ctrl;
> +	enum vd55g1_gpio_mode gpios[VD55G1_NB_GPIOS];
> +	unsigned long ext_leds_mask;
> +	int data_rate_in_mbps;
> +	u32 pixel_clock;
> +	struct v4l2_ctrl_handler ctrl_handler;
> +	struct v4l2_ctrl *pixel_rate_ctrl;
> +	struct v4l2_ctrl *vblank_ctrl;
> +	struct v4l2_ctrl *hblank_ctrl;
> +	struct {
> +		struct v4l2_ctrl *hflip_ctrl;
> +		struct v4l2_ctrl *vflip_ctrl;
> +	};
> +	struct v4l2_ctrl *patgen_ctrl;
> +	struct {
> +		struct v4l2_ctrl *ae_ctrl;
> +		struct v4l2_ctrl *expo_ctrl;
> +		struct v4l2_ctrl *again_ctrl;
> +		struct v4l2_ctrl *dgain_ctrl;
> +	};
> +	struct v4l2_ctrl *ae_lock_ctrl;
> +	struct v4l2_ctrl *ae_bias_ctrl;
> +	struct v4l2_ctrl *led_ctrl;
> +	struct v4l2_ctrl *hdr_ctrl;
> +};
> +
> +static inline struct vd55g1 *to_vd55g1(struct v4l2_subdev *sd)
> +{
> +	return container_of_const(sd, struct vd55g1, sd);
> +}
> +
> +static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
> +{
> +	return &container_of_const(ctrl->handler, struct vd55g1,
> +		ctrl_handler)->sd;

Please align just right of the opening parenthesis.

> +}
> +
> +static u8 get_bpp_by_code(struct vd55g1 *sensor, u32 code)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	unsigned int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(vd55g1_mbus_codes); i++) {
> +		if (vd55g1_mbus_codes[i].code == code)
> +			return vd55g1_mbus_codes[i].bpp;
> +	}
> +	/* Should never happen */
> +	dev_warn(&client->dev, "Unsupported code %d. default to 8 bpp", code);
> +	return 8;
> +}
> +
> +static u8 get_data_type_by_code(struct vd55g1 *sensor, u32 code)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	unsigned int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(vd55g1_mbus_codes); i++) {
> +		if (vd55g1_mbus_codes[i].code == code)
> +			return vd55g1_mbus_codes[i].data_type;
> +	}
> +	/* Should never happen */
> +	dev_warn(&client->dev, "Unsupported code %d. default to MIPI_CSI2_DT_RAW8 data type",
> +		 code);
> +	return MIPI_CSI2_DT_RAW8;
> +}
> +
> +static s32 get_pixel_rate(struct vd55g1 *sensor)
> +{
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_mbus_framefmt *format =
> +		v4l2_subdev_state_get_format(state, 0);
> +
> +	return div64_u64((u64)sensor->data_rate_in_mbps,
> +			 get_bpp_by_code(sensor, format->code));
> +}
> +
> +static s32 get_min_line_length(struct vd55g1 *sensor)
> +{
> +	u32 mipi_req_line_time;
> +	u32 mipi_req_line_length;
> +	u32 min_line_length;
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop =
> +		v4l2_subdev_state_get_crop(state, 0);
> +	const struct v4l2_mbus_framefmt *format =
> +		v4l2_subdev_state_get_format(state, 0);
> +
> +	/* MIPI required time */
> +	mipi_req_line_time = (crop->width *
> +			      get_bpp_by_code(sensor, format->code) +
> +			      VD55G1_MIPI_MARGIN) /
> +			      (sensor->data_rate_in_mbps / MEGA);
> +	mipi_req_line_length = mipi_req_line_time * sensor->pixel_clock /
> +			       HZ_PER_MHZ;
> +
> +	/* Absolute time required for ADCs to convert pixels */
> +	min_line_length = VD55G1_LINE_LENGTH_MIN;
> +	if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB)
> +		min_line_length = VD55G1_LINE_LENGTH_SUB_MIN;
> +
> +	/* Respect both constraint */
> +	return max(min_line_length, mipi_req_line_length);
> +}
> +
> +static unsigned int get_hblank_min(struct vd55g1 *sensor)
> +{
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
> +
> +	return get_min_line_length(sensor) - crop->width;
> +}
> +
> +static struct vblank_limits get_vblank_limits(struct vd55g1 *sensor)
> +{
> +	struct vblank_limits limits;
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
> +
> +	limits.min = VD55G1_VBLANK_MIN;
> +	limits.def = VD55G1_FRAME_LENGTH_DEF - crop->height;
> +	limits.max = VD55G1_VBLANK_MAX - crop->height;
> +
> +	return limits;

Instead of returning a struct, how about passing a pointer to it as an
argument?

> +}
> +
> +#define vd55g1_read(sensor, reg, val, err) \
> +	cci_read((sensor)->regmap, reg, val, err)
> +
> +#define vd55g1_write(sensor, reg, val, err) \
> +	cci_write((sensor)->regmap, reg, (u64)val, err)

I don't think you need to cast explicitly here.

> +
> +static int vd55g1_write_array(struct vd55g1 *sensor, u32 reg, unsigned int len,
> +			      const u8 *array, int *err)
> +{
> +	unsigned int chunk_sz = 1024;
> +	unsigned int sz;
> +	int ret = 0;
> +
> +	if (err && *err)
> +		return *err;
> +
> +	/*
> +	 * This loop isn't necessary but in certains conditions (platforms, cpu
> +	 * load, etc.) it has been observed that the bulk write could timeout.
> +	 */
> +	while (len) {
> +		sz = min(len, chunk_sz);
> +		ret = regmap_bulk_write(sensor->regmap, reg, array, sz);
> +		if (ret < 0)
> +			goto out;
> +		len -= sz;
> +		reg += sz;
> +		array += sz;
> +	}
> +
> +out:
> +	if (ret && err)
> +		*err = ret;
> +
> +	return ret;
> +}
> +
> +static int vd55g1_poll_reg(struct vd55g1 *sensor, u32 reg, u8 poll_val,
> +			   int *err)
> +{
> +	unsigned int val = 0;
> +	int ret;
> +
> +	if (err && *err)
> +		return *err;
> +
> +	ret = regmap_read_poll_timeout(sensor->regmap, CCI_REG_ADDR(reg), val,
> +				       (val == poll_val), 2000,
> +				       500 * USEC_PER_MSEC);
> +
> +	if (ret && err)
> +		*err = ret;
> +
> +	return ret;
> +}
> +
> +static int vd55g1_wait_state(struct vd55g1 *sensor, int state, int *err)
> +{
> +	return vd55g1_poll_reg(sensor, VD55G1_REG_SYSTEM_FSM, state, err);
> +}
> +
> +static int vd55g1_get_regulators(struct vd55g1 *sensor)
> +{
> +	int i;

unsigned int?

> +
> +	for (i = 0; i < ARRAY_SIZE(vd55g1_supply_name); i++)
> +		sensor->supplies[i].supply = vd55g1_supply_name[i];
> +
> +	return devm_regulator_bulk_get(&sensor->i2c_client->dev,
> +				       ARRAY_SIZE(vd55g1_supply_name),
> +				       sensor->supplies);
> +}
> +
> +static int vd55g1_prepare_clock_tree(struct vd55g1 *sensor)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	/* Double data rate */
> +	u32 mipi_freq = link_freq[0] * 2;
> +	u32 sys_clk, mipi_div, pixel_div;
> +	int ret = 0;
> +
> +	if (sensor->xclk_freq < 6 * HZ_PER_MHZ ||
> +	    sensor->xclk_freq > 27 * HZ_PER_MHZ) {
> +		dev_err(&client->dev,
> +			"Only 6Mhz-27Mhz clock range supported. Provided %lu MHz\n",
> +			sensor->xclk_freq / HZ_PER_MHZ);
> +		return -EINVAL;
> +	}
> +
> +	if (mipi_freq < 250 * HZ_PER_MHZ ||
> +	    mipi_freq > 1200 * HZ_PER_MHZ) {
> +		dev_err(&client->dev,
> +			"Only 250Mhz-1200Mhz link frequency range supported. Provided %lu MHz\n",
> +			mipi_freq / HZ_PER_MHZ);
> +		return -EINVAL;
> +	}
> +
> +	if (mipi_freq <= 300 * HZ_PER_MHZ)
> +		mipi_div = 4;
> +	else if (mipi_freq <= 600 * HZ_PER_MHZ)
> +		mipi_div = 2;
> +	else
> +		mipi_div = 1;
> +
> +	sys_clk = mipi_freq * mipi_div;
> +
> +	if (sys_clk <= 780 * HZ_PER_MHZ)
> +		pixel_div = 5;
> +	else if (sys_clk <= 900 * HZ_PER_MHZ)
> +		pixel_div = 6;
> +	else
> +		pixel_div = 8;
> +
> +	sensor->pixel_clock = sys_clk / pixel_div;
> +	/* Frequency to data rate is 1:1 ratio for MIPI */
> +	sensor->data_rate_in_mbps = mipi_freq;
> +
> +	return ret;
> +}
> +
> +static int vd55g1_update_patgen(struct vd55g1 *sensor, u32 patgen_index)
> +{
> +	static const u8 index2val[] = {
> +		0x0, 0x22, 0x28

Could you add aa BUILD_BUG_ON() to check the array's length is the same
than that of the test pattern menu?

> +	};
> +	u32 pattern = index2val[patgen_index];
> +	u32 reg = pattern << VD55G1_PATGEN_TYPE_SHIFT;
> +	u8 darkcal = VD55G1_DARKCAL_AUTO;
> +	u8 duster = VD55G1_DUSTER_RING_ENABLE | VD55G1_DUSTER_DYN_ENABLE |
> +		    VD55G1_DUSTER_ENABLE;
> +	int ret = 0;
> +
> +	if (pattern != 0) {
> +		reg |= VD55G1_PATGEN_ENABLE;
> +		/*
> +		 * Take care of dark calibaration and duster to not mess up the
> +		 * test pattern output.
> +		 */
> +		darkcal = VD55G1_DARKCAL_BYPASS;
> +		duster = VD55G1_DUSTER_DISABLE;
> +	}
> +
> +	vd55g1_write(sensor, VD55G1_REG_DARKCAL_CTRL, darkcal, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_DUSTER_CTRL, duster, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_PATGEN_CTRL, reg, &ret);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_update_expo_cluster(struct vd55g1 *sensor, bool is_auto)
> +{
> +	enum vd55g1_expo_state expo_state = is_auto ? VD55G1_EXP_AUTO :
> +						      VD55G1_EXP_MANUAL;
> +	int ret = 0;
> +
> +	if (sensor->ae_ctrl->is_new)
> +		vd55g1_write(sensor, VD55G1_REG_EXP_MODE(0), expo_state, &ret);
> +
> +	if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB &&
> +	    sensor->hdr_ctrl->is_new) {
> +		vd55g1_write(sensor, VD55G1_REG_EXP_MODE(1), VD55G1_EXP_BYPASS,
> +			     &ret);
> +		if (ret)
> +			return ret;
> +	}
> +
> +	if (!is_auto && sensor->expo_ctrl->is_new)
> +		vd55g1_write(sensor, VD55G1_REG_MANUAL_COARSE_EXPOSURE,
> +			     sensor->expo_ctrl->val, &ret);
> +
> +	if (!is_auto && sensor->again_ctrl->is_new)
> +		vd55g1_write(sensor, VD55G1_REG_MANUAL_ANALOG_GAIN,
> +			     sensor->again_ctrl->val, &ret);
> +
> +	if (!is_auto && sensor->dgain_ctrl->is_new) {
> +		vd55g1_write(sensor, VD55G1_REG_MANUAL_DIGITAL_GAIN,
> +			     sensor->dgain_ctrl->val, &ret);
> +	}
> +
> +	return ret;
> +}
> +
> +static int vd55g1_lock_exposure(struct vd55g1 *sensor, u32 lock_val)
> +{
> +	bool ae_lock = lock_val & V4L2_LOCK_EXPOSURE;
> +	enum vd55g1_expo_state expo_state = ae_lock ? VD55G1_EXP_FREEZE :
> +						      VD55G1_EXP_AUTO;
> +	int ret = 0;
> +
> +	if (sensor->ae_ctrl->val == V4L2_EXPOSURE_AUTO)
> +		vd55g1_write(sensor, VD55G1_REG_EXP_MODE(0), expo_state, &ret);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_read_expo_cluster(struct vd55g1 *sensor)
> +{
> +	u64 exposure = 0;
> +	u64 again = 0;
> +	u64 dgain = 0;
> +	int ret = 0;
> +
> +	vd55g1_read(sensor, VD55G1_REG_APPLIED_COARSE_EXPOSURE, &exposure,
> +		    &ret);
> +	vd55g1_read(sensor, VD55G1_REG_APPLIED_ANALOG_GAIN, &again, &ret);
> +	vd55g1_read(sensor, VD55G1_REG_APPLIED_DIGITAL_GAIN, &dgain, &ret);
> +	if (ret)
> +		return ret;
> +
> +	sensor->expo_ctrl->cur.val = exposure;
> +	sensor->again_ctrl->cur.val = again;
> +	sensor->dgain_ctrl->cur.val = dgain;
> +
> +	return 0;
> +}
> +
> +static int vd55g1_update_frame_length(struct vd55g1 *sensor,
> +				      unsigned int frame_length)
> +{
> +	int ret = 0;
> +
> +	if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB) {
> +		vd55g1_write(sensor, VD55G1_REG_FRAME_LENGTH(1), frame_length,
> +			     &ret);
> +	}

No need for braces.

> +	vd55g1_write(sensor, VD55G1_REG_FRAME_LENGTH(0), frame_length, &ret);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_update_exposure_target(struct vd55g1 *sensor, int index)
> +{
> +	/*
> +	 * Find auto exposure target with: default target exposure * 2^EV
> +	 * Defaut target exposure being 27 for the sensor.
> +	 */
> +	static const unsigned int index2exposure_target[] = {
> +		3, 5, 7, 10, 14, 19, 27, 38, 54, 76, 108, 153, 216,
> +	};
> +	int exposure_target = index2exposure_target[index];
> +
> +	return vd55g1_write(sensor, VD55G1_REG_AE_TARGET_PERCENTAGE,
> +			    exposure_target, NULL);
> +}
> +
> +static int vd55g1_apply_cold_start(struct vd55g1 *sensor)
> +{
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
> +
> +	/*
> +	 * Cold start register is a single register expressed as exposure time
> +	 * in us. This differ from status registers being a combination of
> +	 * exposure, digital gain, and analog gain, requiring the following
> +	 * format conversion.
> +	 */
> +	unsigned int line_length = crop->width + sensor->hblank_ctrl->val;
> +	unsigned int line_time_us = DIV_ROUND_UP(line_length * MEGA,
> +						 sensor->pixel_clock);
> +	u8 d_gain = DIV_ROUND_CLOSEST(sensor->dgain_ctrl->val, 1 << 8);
> +	u8 a_gain = DIV_ROUND_CLOSEST(32, (32 - sensor->again_ctrl->val));
> +	unsigned int expo_us = sensor->expo_ctrl->val * d_gain * a_gain *
> +			       line_time_us;
> +	int ret = 0;
> +
> +	vd55g1_write(sensor, VD55G1_REG_AE_FORCE_COLDSTART, 1, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_AE_COLDSTART_EXP_TIME, expo_us, &ret);
> +
> +	return ret;
> +}
> +
> +static void vd55g1_update_img_pad_format(struct vd55g1 *sensor,
> +					 const struct vd55g1_mode *mode,
> +					 u32 code,
> +					 struct v4l2_mbus_framefmt *fmt)
> +{
> +	fmt->code = code;
> +	fmt->width = mode->width;
> +	fmt->height = mode->height;
> +	fmt->colorspace = V4L2_COLORSPACE_RAW;
> +	fmt->field = V4L2_FIELD_NONE;
> +	fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
> +	fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
> +	fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
> +}
> +
> +static int vd55g1_update_hdr_mode(struct vd55g1 *sensor)
> +{
> +	int ret = 0;
> +
> +	switch (sensor->hdr_ctrl->val) {
> +	case VD55G1_NO_HDR:
> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_MAX_COARSE,
> +			     VD55G1_EXPOSURE_MAX_COARSE_DEF, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_USE_CASES, 0, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_NEXT_CTX, 0x0, &ret);
> +
> +		vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX0, 0, &ret);
> +
> +		vd55g1_write(sensor, VD55G1_REG_VT_MODE(0),
> +			     VD55G1_VT_MODE_NORMAL, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(0),
> +			     VD55G1_MASK_FRAME_CTRL_OUTPUT, &ret);
> +		break;
> +	case VD55G1_HDR_SUB:
> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_MAX_COARSE,
> +			     VD55G1_EXPOSURE_MAX_COARSE_SUB, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_USE_CASES,
> +			     VD55G1_EXPOSURE_USE_CASES_MULTI_CONTEXT, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_NEXT_CTX, 0x0001, &ret);
> +
> +		vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX0, 1, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX1, 1, &ret);
> +
> +		vd55g1_write(sensor, VD55G1_REG_VT_MODE(0),
> +			     VD55G1_VT_MODE_NORMAL, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(0),
> +			     VD55G1_MASK_FRAME_CTRL_MASK, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_INSTANCE(0), 0, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_VT_MODE(1),
> +			     VD55G1_VT_MODE_SUBTRACTION, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(1),
> +			     VD55G1_MASK_FRAME_CTRL_OUTPUT, &ret);
> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_INSTANCE(1), 1, &ret);
> +		break;
> +	default:
> +		ret = -EINVAL;
> +	}
> +
> +	return ret;
> +}
> +
> +static int vd55g1_set_framefmt(struct vd55g1 *sensor)
> +{
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop =
> +		v4l2_subdev_state_get_crop(state, 0);
> +	const struct v4l2_mbus_framefmt *format =
> +		v4l2_subdev_state_get_format(state, 0);
> +	enum vd55g1_bin_mode binning;
> +	int ret = 0;
> +
> +	vd55g1_write(sensor, VD55G1_REG_FORMAT_CTRL,
> +		     get_bpp_by_code(sensor, format->code), &ret);
> +	vd55g1_write(sensor, VD55G1_REG_OIF_IMG_CTRL,
> +		     get_data_type_by_code(sensor, format->code), &ret);
> +
> +	switch (crop->width / format->width) {
> +	case 1:
> +	default:
> +		binning = VD55G1_BIN_MODE_NORMAL;
> +		break;
> +	case 2:
> +		binning = VD55G1_BIN_MODE_DIGITAL_X2;
> +		break;
> +	}
> +	vd55g1_write(sensor, VD55G1_REG_READOUT_CTRL, binning, &ret);
> +
> +	vd55g1_write(sensor, VD55G1_REG_X_START(0), crop->left, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_X_WIDTH(0), crop->width, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_Y_START(0), crop->top, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_Y_HEIGHT(0), crop->height, &ret);
> +
> +	vd55g1_write(sensor, VD55G1_REG_X_START(1), crop->left, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_X_WIDTH(1), crop->width, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_Y_START(1), crop->top, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_Y_HEIGHT(1), crop->height, &ret);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_update_gpios(struct vd55g1 *sensor, unsigned long gpio_mask)
> +{
> +	unsigned long io;
> +	u32 gpio_val;
> +	int ret = 0;
> +
> +	for_each_set_bit(io, &gpio_mask, VD55G1_NB_GPIOS) {
> +		gpio_val = sensor->gpios[io];
> +
> +		if (gpio_val == VD55G1_GPIO_MODE_STROBE &&
> +		    sensor->led_ctrl->val == V4L2_FLASH_LED_MODE_NONE) {
> +			gpio_val = VD55G1_GPIO_MODE_IN;
> +			if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB) {
> +				/* Make its context 1 counterpart strobe too */
> +				vd55g1_write(sensor,
> +					     VD55G1_REG_GPIO_0_CTRL(1) + io,
> +					     gpio_val, &ret);
> +			}
> +		}
> +
> +		ret = vd55g1_write(sensor, VD55G1_REG_GPIO_0_CTRL(0) + io,
> +				   gpio_val, &ret);
> +	}
> +
> +	return ret;
> +}
> +
> +static int vd55g1_ro_ctrls_setup(struct vd55g1 *sensor)
> +{
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
> +
> +	return vd55g1_write(sensor, VD55G1_REG_LINE_LENGTH,
> +			    crop->width + sensor->hblank_ctrl->val, NULL);
> +}
> +
> +static void vd55g1_lock_ctrls(struct vd55g1 *sensor, bool enable)
> +{
> +	/* These settings cannot change during stream */
> +	v4l2_ctrl_grab(sensor->hflip_ctrl, enable);
> +	v4l2_ctrl_grab(sensor->vflip_ctrl, enable);
> +	v4l2_ctrl_grab(sensor->patgen_ctrl, enable);
> +	v4l2_ctrl_grab(sensor->hdr_ctrl, enable);
> +	v4l2_ctrl_grab(sensor->hblank_ctrl, enable);
> +}
> +
> +static int vd55g1_enable_streams(struct v4l2_subdev *sd,
> +				 struct v4l2_subdev_state *state, u32 pad,
> +				 u64 streams_mask)
> +{
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
> +	int ret = 0;
> +
> +	ret = pm_runtime_resume_and_get(&client->dev);
> +	if (ret < 0)
> +		return ret;
> +
> +	vd55g1_write(sensor, VD55G1_REG_EXT_CLOCK, sensor->xclk_freq, &ret);
> +
> +	/* configure output */
> +	vd55g1_write(sensor, VD55G1_REG_MIPI_DATA_RATE,
> +		     sensor->data_rate_in_mbps, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_OIF_CTRL, sensor->oif_ctrl, &ret);
> +	vd55g1_write(sensor, VD55G1_REG_ISL_ENABLE, 0, &ret);
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	ret = vd55g1_set_framefmt(sensor);
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	/* Setup default GPIO values; could be overridden by V4L2 ctrl setup */
> +	ret = vd55g1_update_gpios(sensor, GENMASK(VD55G1_NB_GPIOS - 1, 0));
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	ret = vd55g1_apply_cold_start(sensor);
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	/* Apply settings from V4L2 ctrls */
> +	ret = __v4l2_ctrl_handler_setup(&sensor->ctrl_handler);
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	/* Also apply settings from read-only V4L2 ctrls */
> +	ret = vd55g1_ro_ctrls_setup(sensor);
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	/* Start streaming */
> +	vd55g1_write(sensor, VD55G1_REG_STBY, VD55G1_STBY_START_STREAM, &ret);
> +	vd55g1_poll_reg(sensor, VD55G1_REG_STBY, 0, &ret);
> +	vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_STREAMING, &ret);
> +	if (ret)
> +		goto err_rpm_put;
> +
> +	vd55g1_lock_ctrls(sensor, true);
> +
> +	return ret;
> +
> +err_rpm_put:
> +	pm_runtime_put(&client->dev);
> +	return ret;
> +}
> +
> +static int vd55g1_disable_streams(struct v4l2_subdev *sd,
> +				  struct v4l2_subdev_state *state, u32 pad,
> +				  u64 streams_mask)
> +{
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
> +	int ret = 0;
> +
> +	/* Retrieve Expo cluster to enable coldstart of AE */
> +	ret = vd55g1_read_expo_cluster(sensor);
> +
> +	vd55g1_write(sensor, VD55G1_REG_STREAMING, VD55G1_STREAMING_STOP_STREAM,
> +		     &ret);
> +	vd55g1_poll_reg(sensor, VD55G1_REG_STREAMING, 0, &ret);
> +	vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_SW_STBY, &ret);
> +
> +	if (ret)
> +		dev_warn(&client->dev, "Can't disable stream");
> +
> +	vd55g1_lock_ctrls(sensor, false);
> +
> +	pm_runtime_mark_last_busy(&client->dev);
> +	__pm_runtime_put_autosuspend(&client->dev);

You can just use pm_runtime_put_autosuspend(), the plan on how to merge the
two has changed a little.

> +
> +	return ret;
> +}
> +
> +static int vd55g1_patch(struct vd55g1 *sensor)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	u64 patch;
> +	int ret = 0;
> +
> +	vd55g1_write_array(sensor, VD55G1_REG_FWPATCH_START_ADDR,
> +			   sizeof(patch_array), patch_array, &ret);

Some things just won't change, will they? :-)

> +	vd55g1_write(sensor, VD55G1_REG_BOOT, VD55G1_BOOT_PATCH_SETUP, &ret);
> +	vd55g1_poll_reg(sensor, VD55G1_REG_BOOT, 0, &ret);
> +	if (ret) {
> +		dev_err(&client->dev, "Failed to apply patch");
> +		return ret;
> +	}
> +
> +	vd55g1_read(sensor, VD55G1_REG_FWPATCH_REVISION, &patch, &ret);
> +	if (patch != (VD55G1_FWPATCH_REVISION_MAJOR << 8) +
> +	    VD55G1_FWPATCH_REVISION_MINOR) {
> +		dev_err(&client->dev, "Bad patch version expected %d.%d got %d.%d",
> +			VD55G1_FWPATCH_REVISION_MAJOR,
> +			VD55G1_FWPATCH_REVISION_MINOR,
> +			(u8)(patch >> 8), (u8)(patch & 0xff));
> +		return -ENODEV;
> +	}
> +	dev_dbg(&client->dev, "patch %d.%d applied",
> +		(u8)(patch >> 8), (u8)(patch & 0xff));
> +
> +	return 0;
> +}
> +
> +static int vd55g1_get_selection(struct v4l2_subdev *sd,
> +				struct v4l2_subdev_state *sd_state,
> +				struct v4l2_subdev_selection *sel)
> +{
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(sd_state, 0);
> +
> +	switch (sel->target) {
> +	case V4L2_SEL_TGT_CROP:
> +		sel->r = *crop;
> +		return 0;
> +	case V4L2_SEL_TGT_NATIVE_SIZE:
> +	case V4L2_SEL_TGT_CROP_DEFAULT:
> +	case V4L2_SEL_TGT_CROP_BOUNDS:
> +		sel->r.top = 0;
> +		sel->r.left = 0;
> +		sel->r.width = VD55G1_WIDTH;
> +		sel->r.height = VD55G1_HEIGHT;
> +		return 0;
> +	}
> +
> +	return -EINVAL;
> +}
> +
> +static int vd55g1_enum_mbus_code(struct v4l2_subdev *sd,
> +				 struct v4l2_subdev_state *sd_state,
> +				 struct v4l2_subdev_mbus_code_enum *code)
> +{
> +	if (code->index >= ARRAY_SIZE(vd55g1_mbus_codes))
> +		return -EINVAL;
> +
> +	code->code = vd55g1_mbus_codes[code->index].code;
> +
> +	return 0;
> +}
> +
> +static int vd55g1_new_format_change_controls(struct vd55g1 *sensor)
> +{
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
> +	struct vblank_limits vblank;
> +	unsigned int hblank;
> +	unsigned int frame_length = 0;
> +	unsigned int expo_max;
> +	int ret;
> +
> +	/* Reset vblank and frame length to default */
> +	vblank = get_vblank_limits(sensor);
> +	ret = __v4l2_ctrl_modify_range(sensor->vblank_ctrl, vblank.min,
> +				       vblank.max, 1, vblank.def);
> +	if (ret)
> +		return ret;
> +
> +	/* Max exposure changes with vblank */
> +	frame_length = crop->height + sensor->vblank_ctrl->val;
> +	expo_max = frame_length - VD55G1_EXPO_MAX_TERM;
> +	ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1,
> +				       VD55G1_EXPO_DEF);
> +	if (ret)
> +		return ret;
> +
> +	/* Update pixel rate to reflect new bpp */
> +	ret = __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_ctrl,
> +				       get_pixel_rate(sensor));
> +	if (ret)
> +		return ret;
> +
> +	/* Update hblank according to new width */
> +	hblank = get_hblank_min(sensor);
> +	ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl, hblank, hblank, 1,
> +				       hblank);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_set_pad_fmt(struct v4l2_subdev *sd,
> +			      struct v4l2_subdev_state *sd_state,
> +			      struct v4l2_subdev_format *sd_fmt)
> +{
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	const struct vd55g1_mode *new_mode;
> +	struct v4l2_mbus_framefmt *format;
> +	struct v4l2_rect pad_crop;
> +	unsigned int binning;
> +
> +	new_mode = v4l2_find_nearest_size(vd55g1_supported_modes,
> +					  ARRAY_SIZE(vd55g1_supported_modes),
> +					  width, height, sd_fmt->format.width,
> +					  sd_fmt->format.height);
> +
> +	vd55g1_update_img_pad_format(sensor, new_mode, sd_fmt->format.code,
> +				     &sd_fmt->format);
> +
> +	/*
> +	 * Use binning to maximize the crop rectangle size, and centre it in the
> +	 * sensor.
> +	 */
> +	binning = min(VD55G1_WIDTH / sd_fmt->format.width,
> +		      VD55G1_HEIGHT / sd_fmt->format.height);
> +	binning = min(binning, 2U);
> +	pad_crop.width = sd_fmt->format.width * binning;
> +	pad_crop.height = sd_fmt->format.height * binning;
> +	pad_crop.left = (VD55G1_WIDTH - pad_crop.width) / 2;
> +	pad_crop.top = (VD55G1_HEIGHT - pad_crop.height) / 2;
> +
> +	format = v4l2_subdev_state_get_format(sd_state, sd_fmt->pad);
> +
> +	*format = sd_fmt->format;
> +
> +	*v4l2_subdev_state_get_crop(sd_state, sd_fmt->pad) = pad_crop;
> +	if (sd_fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
> +		return vd55g1_new_format_change_controls(sensor);
> +
> +	return 0;
> +}
> +
> +static int vd55g1_init_state(struct v4l2_subdev *sd,
> +			     struct v4l2_subdev_state *sd_state)
> +{
> +	unsigned int def_mode = VD55G1_DEFAULT_MODE;
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	struct v4l2_subdev_format fmt = { 0 };
> +	struct v4l2_subdev_route routes[] = { 0 };
> +	struct v4l2_subdev_krouting routing = {
> +	    .num_routes = ARRAY_SIZE(routes),
> +	    .routes = routes,
> +	};
> +	int ret;
> +
> +	/* Needed by v4l2_subdev_s_stream_helper(), even with 1 stream only */
> +	routes[0].flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE;

Please assign in variable declaration.

> +	ret = v4l2_subdev_set_routing(sd, sd_state, &routing);
> +	if (ret)
> +		return ret;
> +
> +	vd55g1_update_img_pad_format(sensor, &vd55g1_supported_modes[def_mode],
> +				     VD55G1_MEDIA_BUS_FMT_DEF, &fmt.format);
> +
> +	return vd55g1_set_pad_fmt(sd, sd_state, &fmt);
> +}
> +
> +static int vd55g1_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(vd55g1_supported_modes))
> +		return -EINVAL;
> +
> +	fse->min_width = vd55g1_supported_modes[fse->index].width;
> +	fse->max_width = fse->min_width;
> +	fse->min_height = vd55g1_supported_modes[fse->index].height;
> +	fse->max_height = fse->min_height;
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_subdev_internal_ops vd55g1_internal_ops = {
> +	.init_state = vd55g1_init_state,
> +};
> +
> +static const struct v4l2_subdev_pad_ops vd55g1_pad_ops = {
> +	.enum_mbus_code = vd55g1_enum_mbus_code,
> +	.get_fmt = v4l2_subdev_get_fmt,
> +	.set_fmt = vd55g1_set_pad_fmt,
> +	.get_selection = vd55g1_get_selection,
> +	.enum_frame_size = vd55g1_enum_frame_size,
> +	.enable_streams = vd55g1_enable_streams,
> +	.disable_streams = vd55g1_disable_streams,
> +};
> +
> +static const struct v4l2_subdev_video_ops vd55g1_video_ops = {
> +	.s_stream = v4l2_subdev_s_stream_helper,
> +};
> +
> +static const struct v4l2_subdev_ops vd55g1_subdev_ops = {
> +	.video = &vd55g1_video_ops,
> +	.pad = &vd55g1_pad_ops,
> +};
> +
> +static int vd55g1_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
> +{
> +	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +	int ret = 0;
> +
> +	/* Interact with HW only when it is powered ON */
> +	if (!pm_runtime_get_if_in_use(&client->dev))
> +		return 0;
> +
> +	switch (ctrl->id) {
> +	case V4L2_CID_EXPOSURE_AUTO:
> +		ret = vd55g1_read_expo_cluster(sensor);
> +		break;
> +	default:
> +		ret = -EINVAL;
> +		break;
> +	}
> +
> +	pm_runtime_mark_last_busy(&client->dev);
> +	pm_runtime_put_autosuspend(&client->dev);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> +	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
> +	unsigned int frame_length = 0;
> +	unsigned int expo_max;
> +	unsigned int hblank = get_hblank_min(sensor);
> +	bool is_auto = false;
> +	struct v4l2_subdev_state *state =
> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
> +	int ret = 0;
> +
> +	if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
> +		return 0;
> +
> +	/* Update controls state, range, etc. whatever the state of the HW */
> +	switch (ctrl->id) {
> +	case V4L2_CID_VBLANK:
> +		frame_length = crop->height + ctrl->val;
> +		expo_max = frame_length - VD55G1_EXPO_MAX_TERM;
> +		ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max,
> +					       1, VD55G1_EXPO_DEF);
> +		break;
> +	case V4L2_CID_EXPOSURE_AUTO:
> +		is_auto = (ctrl->val == V4L2_EXPOSURE_AUTO);
> +		__v4l2_ctrl_grab(sensor->ae_lock_ctrl, !is_auto);
> +		__v4l2_ctrl_grab(sensor->ae_bias_ctrl, !is_auto);
> +		break;
> +	case V4L2_CID_HDR_SENSOR_MODE:
> +		/* Discriminate if the userspace changed the control value */
> +		if (ctrl->val != ctrl->cur.val) {
> +			/* Max horizontal blanking changes with hdr mode */
> +			ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl,
> +						       hblank, hblank, 1,
> +						       hblank);
> +		}
> +		break;
> +	default:
> +		break;
> +	}
> +
> +	/* Don't modify hardware if controls modification failed */
> +	if (ret)
> +		return ret;
> +
> +	/* Interact with HW only when it is powered ON */
> +	if (!pm_runtime_get_if_in_use(&client->dev))
> +		return 0;
> +
> +	switch (ctrl->id) {
> +	case V4L2_CID_HFLIP:
> +		ret = vd55g1_write(sensor, VD55G1_REG_ORIENTATION,
> +				   sensor->hflip_ctrl->val |
> +					   (sensor->vflip_ctrl->val << 1),
> +				   NULL);
> +		break;
> +	case V4L2_CID_TEST_PATTERN:
> +		ret = vd55g1_update_patgen(sensor, ctrl->val);
> +		break;
> +	case V4L2_CID_EXPOSURE_AUTO:
> +		ret = vd55g1_update_expo_cluster(sensor, is_auto);
> +		break;
> +	case V4L2_CID_3A_LOCK:
> +		ret = vd55g1_lock_exposure(sensor, ctrl->val);
> +		break;
> +	case V4L2_CID_AUTO_EXPOSURE_BIAS:
> +		/*
> +		 * We use auto exposure target percentage register to control
> +		 * exposure bias for more precision.
> +		 */
> +		ret = vd55g1_update_exposure_target(sensor, ctrl->val);
> +		break;
> +	case V4L2_CID_VBLANK:
> +		ret = vd55g1_update_frame_length(sensor, frame_length);
> +		break;
> +	case V4L2_CID_FLASH_LED_MODE:
> +		ret = vd55g1_update_gpios(sensor, sensor->ext_leds_mask);
> +		break;
> +	case V4L2_CID_HDR_SENSOR_MODE:
> +		ret = vd55g1_update_hdr_mode(sensor);
> +		break;
> +	default:
> +		ret = -EINVAL;
> +		break;
> +	}
> +
> +	pm_runtime_mark_last_busy(&client->dev);
> +	pm_runtime_put_autosuspend(&client->dev);
> +
> +	return ret;
> +}
> +
> +static const struct v4l2_ctrl_ops vd55g1_ctrl_ops = {
> +	.g_volatile_ctrl = vd55g1_g_volatile_ctrl,
> +	.s_ctrl = vd55g1_s_ctrl,
> +};
> +
> +static int vd55g1_init_ctrls(struct vd55g1 *sensor)
> +{
> +	const struct v4l2_ctrl_ops *ops = &vd55g1_ctrl_ops;
> +	struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
> +	struct v4l2_ctrl *ctrl;
> +	struct v4l2_fwnode_device_properties fwnode_props;
> +	struct vblank_limits vblank;
> +	unsigned int hblank;
> +	int ret;
> +
> +	v4l2_ctrl_handler_init(hdl, 16);
> +
> +	/* Flip cluster */
> +	sensor->hflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
> +					       0, 1, 1, 0);
> +	sensor->vflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
> +					       0, 1, 1, 0);
> +	v4l2_ctrl_cluster(2, &sensor->hflip_ctrl);
> +
> +	/* Exposition cluster */
> +	sensor->ae_ctrl = v4l2_ctrl_new_std_menu(hdl, ops,
> +						 V4L2_CID_EXPOSURE_AUTO, 1,
> +						 ~0x3, V4L2_EXPOSURE_AUTO);
> +	sensor->again_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
> +					       0, 0x1c, 1, VD55G1_AGAIN_DEF);
> +	sensor->dgain_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN,
> +					       256, 0xffff, 1,
> +					       VD55G1_DGAIN_DEF);
> +	sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, 0,
> +					      VD55G1_FRAME_LENGTH_DEF -
> +					      VD55G1_EXPO_MAX_TERM,
> +					      1, VD55G1_EXPO_DEF);
> +	v4l2_ctrl_auto_cluster(4, &sensor->ae_ctrl, V4L2_EXPOSURE_MANUAL, true);
> +
> +	sensor->patgen_ctrl =
> +		v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
> +					     ARRAY_SIZE(vd55g1_tp_menu) - 1, 0,
> +					     0, vd55g1_tp_menu);
> +	ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ,
> +				      ARRAY_SIZE(link_freq) - 1, 0, link_freq);
> +	if (ctrl)
> +		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +	sensor->pixel_rate_ctrl = v4l2_ctrl_new_std(hdl, ops,
> +						    V4L2_CID_PIXEL_RATE, 1,
> +						    INT_MAX, 1,
> +						    get_pixel_rate(sensor));
> +	if (sensor->pixel_rate_ctrl)
> +		sensor->pixel_rate_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +	sensor->ae_lock_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_3A_LOCK,
> +						 0, 1, 0, 0);
> +	sensor->ae_bias_ctrl =
> +		v4l2_ctrl_new_int_menu(hdl, ops,
> +				       V4L2_CID_AUTO_EXPOSURE_BIAS,
> +				       ARRAY_SIZE(vd55g1_ev_bias_menu) - 1,
> +				       ARRAY_SIZE(vd55g1_ev_bias_menu) / 2,
> +				       vd55g1_ev_bias_menu);
> +	sensor->hdr_ctrl =
> +		v4l2_ctrl_new_std_menu_items(hdl, ops,
> +					     V4L2_CID_HDR_SENSOR_MODE,
> +					     ARRAY_SIZE(vd55g1_hdr_menu) - 1, 0,
> +					     VD55G1_NO_HDR, vd55g1_hdr_menu);
> +	hblank = get_hblank_min(sensor);
> +	sensor->hblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK,
> +						hblank, hblank, 1, hblank);
> +	if (sensor->hblank_ctrl)
> +		sensor->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +	vblank = get_vblank_limits(sensor);
> +	sensor->vblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
> +						vblank.min, vblank.max,
> +						1, vblank.def);
> +
> +	/* Additional controls based on device tree properties */
> +	if (sensor->ext_leds_mask) {
> +		sensor->led_ctrl =
> +			v4l2_ctrl_new_std_menu(hdl, ops,
> +					       V4L2_CID_FLASH_LED_MODE,
> +					       V4L2_FLASH_LED_MODE_FLASH, 0,
> +					       V4L2_FLASH_LED_MODE_NONE);
> +	}
> +
> +	if (hdl->error) {
> +		ret = hdl->error;
> +		goto free_ctrls;
> +	}

You can drop this check, also v4l2_ctrl_new_fwnode_properties() will set
the handler's error status.

> +
> +	ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &fwnode_props);
> +	if (ret)
> +		goto free_ctrls;
> +
> +	ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &fwnode_props);
> +	if (ret)
> +		goto free_ctrls;
> +
> +	sensor->sd.ctrl_handler = hdl;
> +	return 0;
> +
> +free_ctrls:
> +	v4l2_ctrl_handler_free(hdl);
> +	return ret;
> +}
> +
> +static int vd55g1_check_sensor_revision(struct vd55g1 *sensor)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	u64 device_rev;
> +	int ret;
> +
> +	ret = vd55g1_read(sensor, VD55G1_REG_REVISION, &device_rev, NULL);
> +	if (ret)
> +		return ret;
> +
> +	if (device_rev != VD55G1_REVISION_CCB) {
> +		dev_err(&client->dev, "Unsupported sensor revision (0x%x)\n",
> +			(u16)device_rev);
> +		return -ENODEV;
> +	}
> +
> +	return 0;
> +}
> +
> +static int vd55g1_detect(struct vd55g1 *sensor)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	u64 id;
> +	int ret;
> +
> +	ret = vd55g1_read(sensor, VD55G1_REG_MODEL_ID, &id, NULL);
> +	if (ret)
> +		return ret;
> +
> +	if (id != VD55G1_MODEL_ID) {
> +		dev_warn(&client->dev, "Unsupported sensor id %x", (u32)id);
> +		return -ENODEV;
> +	}
> +
> +	return vd55g1_check_sensor_revision(sensor);
> +}
> +
> +static int vd55g1_power_on(struct device *dev)
> +{
> +	struct v4l2_subdev *sd = dev_get_drvdata(dev);
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +	int ret;
> +
> +	ret = regulator_bulk_enable(ARRAY_SIZE(vd55g1_supply_name),
> +				    sensor->supplies);
> +	if (ret) {
> +		dev_err(dev, "Failed to enable regulators %d", ret);
> +		return ret;
> +	}
> +
> +	ret = clk_prepare_enable(sensor->xclk);
> +	if (ret) {
> +		dev_err(dev, "Failed to enable clock %d", ret);
> +		goto disable_bulk;
> +	}
> +
> +	gpiod_set_value_cansleep(sensor->reset_gpio, 0);
> +	usleep_range(5000, 10000);
> +	ret = vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_READY_TO_BOOT, NULL);
> +	if (ret) {
> +		dev_err(dev, "Sensor reset failed %d\n", ret);
> +		goto disable_clock;
> +	}
> +
> +	ret = vd55g1_detect(sensor);
> +	if (ret) {
> +		dev_err(dev, "Sensor detect failed %d", ret);
> +		goto disable_clock;
> +	}
> +
> +	ret = vd55g1_patch(sensor);
> +	if (ret) {
> +		dev_err(dev, "Sensor patch failed %d", ret);
> +		goto disable_clock;
> +	}
> +
> +	ret = vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_SW_STBY, NULL);
> +	if (ret) {
> +		dev_err(dev, "Sensor waiting after patch failed %d",
> +			ret);
> +		goto disable_clock;
> +	}
> +
> +	return 0;
> +
> +disable_clock:
> +	gpiod_set_value_cansleep(sensor->reset_gpio, 1);
> +	clk_disable_unprepare(sensor->xclk);
> +disable_bulk:
> +	regulator_bulk_disable(ARRAY_SIZE(vd55g1_supply_name),
> +			       sensor->supplies);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_power_off(struct device *dev)
> +{
> +	struct v4l2_subdev *sd = dev_get_drvdata(dev);
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +
> +	clk_disable_unprepare(sensor->xclk);
> +	gpiod_set_value_cansleep(sensor->reset_gpio, 1);
> +	regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies);
> +	return 0;
> +}
> +
> +static int vd55g1_check_csi_conf(struct vd55g1 *sensor,
> +				 struct fwnode_handle *endpoint)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
> +	u8 n_lanes;
> +	int ret = 0;
> +
> +	ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
> +	if (ret)
> +		return -EINVAL;
> +
> +	/* Check lanes number */
> +	n_lanes = ep.bus.mipi_csi2.num_data_lanes;
> +	if (n_lanes != 1) {
> +		dev_err(&client->dev, "Sensor only supports 1 lane, found %d\n",
> +			n_lanes);
> +		ret = -EINVAL;
> +		goto done;
> +	}
> +
> +	/* Clock lane must be first */
> +	if (ep.bus.mipi_csi2.clock_lane != 0) {
> +		dev_err(&client->dev, "Clock lane must be mapped to lane 0\n");
> +		ret = -EINVAL;
> +		goto done;
> +	}
> +
> +	/* Handle polarities in sensor configuration */
> +	sensor->oif_ctrl = (ep.bus.mipi_csi2.lane_polarities[0] << 3) |
> +			   (ep.bus.mipi_csi2.lane_polarities[1] << 6);
> +
> +	/* Check the link frequency set in device tree */
> +	if (!ep.nr_of_link_frequencies) {
> +		dev_err(&client->dev, "link-frequency property not found in DT\n");
> +		ret = -EINVAL;
> +		goto done;
> +	}
> +	if (ep.nr_of_link_frequencies != 1) {
> +		dev_err(&client->dev, "Multiple link frequencies not supported\n");
> +		ret = -EINVAL;
> +		goto done;
> +	}
> +	link_freq[0] = ep.link_frequencies[0];
> +
> +done:
> +	v4l2_fwnode_endpoint_free(&ep);
> +
> +	return ret;
> +}
> +
> +static int vd55g1_parse_dt_gpios_array(struct vd55g1 *sensor,
> +				       char *prop_name, u32 *array, int *nb)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	struct device_node *np = client->dev.of_node;
> +	unsigned int i;
> +
> +	*nb = of_property_read_variable_u32_array(np, prop_name, array, 0,
> +						  VD55G1_NB_GPIOS);

You could use device_property_count_u32() and
device_property_read_variable_u32_array() here instead.

> +	if (*nb == -EINVAL) {
> +		/* Property not found */
> +		*nb = 0;
> +		return 0;
> +	} else if (*nb < 0) {
> +		dev_err(&client->dev, "Failed to read %s prop\n", prop_name);
> +		return *nb;
> +	}
> +
> +	for (i = 0; i < *nb;  i++) {
> +		if (array[i] >= VD55G1_NB_GPIOS) {
> +			dev_err(&client->dev, "Invalid GPIO number %d\n",
> +				array[i]);
> +			return -EINVAL;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
> +static int vd55g1_parse_dt_gpios(struct vd55g1 *sensor)
> +{
> +	u32 led_gpios[VD55G1_NB_GPIOS];
> +	int nb_gpios_leds;
> +	unsigned int i;
> +	int ret;
> +
> +	/* Initialize GPIOs to default */
> +	for (i = 0; i < VD55G1_NB_GPIOS; i++)
> +		sensor->gpios[i] = VD55G1_GPIO_MODE_IN;
> +	sensor->ext_leds_mask = 0;
> +
> +	/* Take into account optional 'st,leds' output for GPIOs */
> +	ret = vd55g1_parse_dt_gpios_array(sensor, "st,leds", led_gpios,
> +					  &nb_gpios_leds);
> +	if (ret)
> +		return ret;
> +
> +	for (i = 0; i < nb_gpios_leds; i++) {
> +		sensor->gpios[led_gpios[i]] = VD55G1_GPIO_MODE_STROBE;
> +		set_bit(led_gpios[i], &sensor->ext_leds_mask);
> +	}
> +
> +	return 0;
> +}
> +
> +static int vd55g1_parse_dt(struct vd55g1 *sensor)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	struct device *dev = &client->dev;
> +	struct fwnode_handle *endpoint;
> +	int ret;
> +
> +	endpoint = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0);
> +	if (!endpoint) {
> +		dev_err(dev, "Endpoint node not found\n");
> +		return -EINVAL;
> +	}
> +
> +	ret = vd55g1_check_csi_conf(sensor, endpoint);
> +	fwnode_handle_put(endpoint);
> +	if (ret)
> +		return ret;
> +
> +	return vd55g1_parse_dt_gpios(sensor);
> +}
> +
> +static int vd55g1_subdev_init(struct vd55g1 *sensor)
> +{
> +	struct i2c_client *client = sensor->i2c_client;
> +	int ret;
> +
> +	/* Init sub device */
> +	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> +	sensor->sd.internal_ops = &vd55g1_internal_ops;
> +
> +	/* Init source pad */
> +	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
> +	sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> +	ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
> +	if (ret) {
> +		dev_err(&client->dev, "Failed to init media entity : %d", ret);
> +		return ret;
> +	}
> +
> +	sensor->sd.state_lock = sensor->ctrl_handler.lock;
> +	ret = v4l2_subdev_init_finalize(&sensor->sd);
> +	if (ret) {
> +		dev_err(&client->dev, "Subdev init error: %d", ret);
> +		goto err_ctrls;
> +	}
> +
> +	/*
> +	 * Initiliaze controls after v4l2_subdev_init_finalize() to make sure
> +	 * default values are set.
> +	 */
> +	ret = vd55g1_init_ctrls(sensor);
> +	if (ret) {
> +		dev_err(&client->dev, "Controls initialization failed %d", ret);
> +		goto err_media;
> +	}
> +
> +	return ret;
> +
> +err_ctrls:
> +	v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
> +
> +err_media:
> +	media_entity_cleanup(&sensor->sd.entity);
> +	return ret;
> +}
> +
> +static void vd55g1_subdev_cleanup(struct vd55g1 *sensor)
> +{
> +	v4l2_async_unregister_subdev(&sensor->sd);
> +	v4l2_subdev_cleanup(&sensor->sd);
> +	media_entity_cleanup(&sensor->sd.entity);
> +	v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
> +}
> +
> +static int vd55g1_probe(struct i2c_client *client)
> +{
> +	struct device *dev = &client->dev;
> +	struct vd55g1 *sensor;
> +	int ret;
> +
> +	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
> +	if (!sensor)
> +		return -ENOMEM;
> +
> +	v4l2_i2c_subdev_init(&sensor->sd, client, &vd55g1_subdev_ops);
> +	sensor->i2c_client = client;
> +
> +	ret = vd55g1_parse_dt(sensor);
> +	if (ret)
> +		return dev_err_probe(dev, ret, "Failed to parse Device Tree.");
> +
> +	/* Get (and check) resources : power regs, ext clock, reset gpio */
> +	ret = vd55g1_get_regulators(sensor);
> +	if (ret)
> +		return dev_err_probe(dev, ret, "Failed to get regulators.");
> +
> +	sensor->xclk = devm_clk_get(dev, NULL);
> +	if (IS_ERR(sensor->xclk))
> +		return dev_err_probe(dev, PTR_ERR(sensor->xclk),
> +				     "Failed to get xclk.");
> +
> +	sensor->xclk_freq = clk_get_rate(sensor->xclk);
> +	ret = vd55g1_prepare_clock_tree(sensor);
> +	if (ret)
> +		return ret;
> +
> +	sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
> +						     GPIOD_OUT_HIGH);
> +	if (IS_ERR(sensor->reset_gpio))
> +		return dev_err_probe(dev, PTR_ERR(sensor->reset_gpio),
> +				     "Failed to get reset gpio.");
> +
> +	sensor->regmap = devm_cci_regmap_init_i2c(client, 16);
> +	if (IS_ERR(sensor->regmap))
> +		return dev_err_probe(dev, PTR_ERR(sensor->regmap),
> +				     "Failed to init regmap.");
> +
> +	/* Detect if sensor is present and if its revision is supported */
> +	ret = vd55g1_power_on(dev);
> +	if (ret)
> +		return ret;
> +
> +	ret = vd55g1_subdev_init(sensor);
> +	if (ret) {
> +		dev_err(dev, "V4l2 init failed : %d", ret);
> +		goto err_power_off;
> +	}
> +
> +	ret = v4l2_async_register_subdev(&sensor->sd);

Note that by this time Runtime PM needs to have been enabled, for device
access (and Runtime PM resume) may follow immediately.

> +	if (ret) {
> +		dev_err(dev, "async subdev register failed %d", ret);
> +		goto err_subdev;
> +	}
> +
> +	/* Enable pm_runtime and power off the sensor */
> +	pm_runtime_set_active(dev);
> +	pm_runtime_get_noresume(dev);
> +	pm_runtime_enable(dev);
> +	pm_runtime_set_autosuspend_delay(dev, 4000);
> +	pm_runtime_use_autosuspend(dev);
> +	pm_runtime_mark_last_busy(dev);
> +
> +	return 0;
> +
> +err_subdev:
> +	vd55g1_subdev_cleanup(sensor);
> +err_power_off:
> +	vd55g1_power_off(dev);
> +
> +	return ret;
> +}
> +
> +static void vd55g1_remove(struct i2c_client *client)
> +{
> +	struct v4l2_subdev *sd = i2c_get_clientdata(client);
> +	struct vd55g1 *sensor = to_vd55g1(sd);
> +
> +	vd55g1_subdev_cleanup(sensor);
> +
> +	pm_runtime_disable(&client->dev);
> +	if (!pm_runtime_status_suspended(&client->dev))
> +		vd55g1_power_off(&client->dev);
> +	pm_runtime_set_suspended(&client->dev);

Add:

	pm_runtime_dont_use_autosuspend(dev);

> +}
> +
> +static const struct of_device_id vd55g1_dt_ids[] = {
> +	{ .compatible = "st,vd55g1" },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, vd55g1_dt_ids);
> +
> +static const struct dev_pm_ops vd55g1_pm_ops = {
> +	SET_RUNTIME_PM_OPS(vd55g1_power_off, vd55g1_power_on, NULL)
> +};
> +
> +static struct i2c_driver vd55g1_i2c_driver = {
> +	.driver = {
> +		.name  = "vd55g1",
> +		.of_match_table = vd55g1_dt_ids,
> +		.pm = &vd55g1_pm_ops,
> +	},
> +	.probe = vd55g1_probe,
> +	.remove = vd55g1_remove,
> +};
> +
> +module_i2c_driver(vd55g1_i2c_driver);
> +
> +MODULE_AUTHOR("Benjamin Mugnier <benjamin.mugnier@foss.st.com>");
> +MODULE_AUTHOR("Sylvain Petinot <sylvain.petinot@foss.st.com>");
> +MODULE_DESCRIPTION("VD55G1 camera subdev driver");
> +MODULE_LICENSE("GPL");
>

Hi Sakari,

Thank you for your review.
Consider everything not commented as queued for v5.

On 4/3/25 11:38, Sakari Ailus wrote:
> Hi Benjamin,
> 
> Thanks for the set.
> 
> On Wed, Apr 02, 2025 at 03:50:07PM +0200, Benjamin Mugnier wrote:
>> The VD55G1 is a monochrome global shutter camera with a 804x704 maximum
>> resolution with RAW8 and RAW10 bytes per pixel.
>> The driver supports :
>> - Auto exposure from the sensor, or manual exposure mode
>> - HDR subtraction mode, allowing edge detection and background removal
>> - Auto exposure cold start, using configuration values from last stream
>> to start the next one
>> - LED GPIOs for illumination
>> - Most standard camera sensor features (hblank, vblank, test patterns,
>> again, dgain, hflip, vflip, auto exposure bias, etc.)
>> Add driver source code to MAINTAINERS file.
>>
>> Signed-off-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
>> ---
>>  MAINTAINERS                |    2 +
>>  drivers/media/i2c/Kconfig  |   11 +
>>  drivers/media/i2c/Makefile |    1 +
>>  drivers/media/i2c/vd55g1.c | 1993 ++++++++++++++++++++++++++++++++++++++++++++
>>  4 files changed, 2007 insertions(+)
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 4f5e9005063a157de69e81b10f8def9da9e6c04c..9991c5f63e3d49a4e7a6ef0071f3b81825e84eee 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -22416,6 +22416,7 @@ M:	Sylvain Petinot <sylvain.petinot@foss.st.com>
>>  L:	linux-media@vger.kernel.org
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml
>> +F:	drivers/media/i2c/vd55g1.c
>>  
>>  ST VGXY61 DRIVER
>>  M:	Benjamin Mugnier <benjamin.mugnier@foss.st.com>
>> @@ -24801,6 +24802,7 @@ F:	drivers/media/i2c/mt*
>>  F:	drivers/media/i2c/og*
>>  F:	drivers/media/i2c/ov*
>>  F:	drivers/media/i2c/s5*
>> +F:	drivers/media/i2c/vd55g1.c
>>  F:	drivers/media/i2c/vgxy61.c
>>  
>>  VF610 NAND DRIVER
>> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
>> index 8ba096b8ebca241239a327ab3af0d9bce3ee9962..d3de318f4b4732c677e2f357d05d2ae7af5cd23b 100644
>> --- a/drivers/media/i2c/Kconfig
>> +++ b/drivers/media/i2c/Kconfig
>> @@ -690,6 +690,17 @@ config VIDEO_S5K6A3
>>  	  This is a V4L2 sensor driver for Samsung S5K6A3 raw
>>  	  camera sensor.
>>  
>> +config VIDEO_VD55G1
>> +	tristate "ST VD55G1 sensor support"
>> +	select V4L2_CCI_I2C
>> +	depends on OF && GPIOLIB
> 
> Does the driver really depend on OF? There are a few of_*() functions being
> used, see comments below.

Indeed, I made your suggested changes and removed the OF dependency.

> 
>> +	help
>> +	  This is a Video4Linux2 sensor driver for the ST VD55G1
>> +	  camera sensor.
>> +
>> +	  To compile this driver as a module, choose M here: the
>> +	  module will be called vd55g1.
>> +
>>  config VIDEO_VGXY61
>>  	tristate "ST VGXY61 sensor support"
>>  	select V4L2_CCI_I2C
>> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
>> index fbb988bd067a1b8b577248811f18a15671eb8932..56405c0334aead46c9f5b12fefba24a52f733499 100644
>> --- a/drivers/media/i2c/Makefile
>> +++ b/drivers/media/i2c/Makefile
>> @@ -152,6 +152,7 @@ obj-$(CONFIG_VIDEO_TW9910) += tw9910.o
>>  obj-$(CONFIG_VIDEO_UDA1342) += uda1342.o
>>  obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
>>  obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
>> +obj-$(CONFIG_VIDEO_VD55G1) += vd55g1.o
>>  obj-$(CONFIG_VIDEO_VGXY61) += vgxy61.o
>>  obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o
>>  obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
>> diff --git a/drivers/media/i2c/vd55g1.c b/drivers/media/i2c/vd55g1.c
>> new file mode 100644
>> index 0000000000000000000000000000000000000000..26bb2412a41f8a7624836da7cd0ccb6000cbfcf2
>> --- /dev/null
>> +++ b/drivers/media/i2c/vd55g1.c
>> @@ -0,0 +1,1993 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Driver for VD55G1 global shutter sensor family driver
>> + *
>> + * Copyright (C) 2025 STMicroelectronics SA
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/delay.h>
>> +#include <linux/gpio/consumer.h>
>> +#include <linux/i2c.h>
>> +#include <linux/iopoll.h>
>> +#include <linux/module.h>
>> +#include <linux/pm_runtime.h>
> 
> You should include linux/property.h as well.
> 
>> +#include <linux/regmap.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <linux/unaligned.h>
>> +#include <linux/units.h>
>> +
>> +#include <media/mipi-csi2.h>
>> +#include <media/v4l2-async.h>
>> +#include <media/v4l2-cci.h>
>> +#include <media/v4l2-ctrls.h>
>> +#include <media/v4l2-device.h>
>> +#include <media/v4l2-event.h>
>> +#include <media/v4l2-fwnode.h>
>> +#include <media/v4l2-subdev.h>
>> +
>> +/* Register Map */
>> +#define VD55G1_REG_MODEL_ID				CCI_REG32_LE(0x0000)
>> +#define VD55G1_MODEL_ID					0x53354731
>> +#define VD55G1_REG_REVISION				CCI_REG16_LE(0x0004)
>> +#define VD55G1_REVISION_CCB				0x2020
>> +#define VD55G1_REG_FWPATCH_REVISION			CCI_REG16_LE(0x0012)
>> +#define VD55G1_REG_FWPATCH_START_ADDR			CCI_REG8(0x2000)
>> +#define VD55G1_REG_SYSTEM_FSM				CCI_REG8(0x001c)
>> +#define VD55G1_SYSTEM_FSM_READY_TO_BOOT			0x01
>> +#define VD55G1_SYSTEM_FSM_SW_STBY			0x02
>> +#define VD55G1_SYSTEM_FSM_STREAMING			0x03
>> +#define VD55G1_REG_BOOT					CCI_REG8(0x0200)
>> +#define VD55G1_BOOT_PATCH_SETUP				2
>> +#define VD55G1_REG_STBY					CCI_REG8(0x0201)
>> +#define VD55G1_STBY_START_STREAM			1
>> +#define VD55G1_REG_STREAMING				CCI_REG8(0x0202)
>> +#define VD55G1_STREAMING_STOP_STREAM			1
>> +#define VD55G1_REG_EXT_CLOCK				CCI_REG32_LE(0x0220)
>> +#define VD55G1_REG_LINE_LENGTH				CCI_REG16_LE(0x0300)
>> +#define VD55G1_REG_ORIENTATION				CCI_REG8(0x0302)
>> +#define VD55G1_REG_FORMAT_CTRL				CCI_REG8(0x030a)
>> +#define VD55G1_REG_OIF_CTRL				CCI_REG16_LE(0x030c)
>> +#define VD55G1_REG_ISL_ENABLE				CCI_REG16_LE(0x326)
>> +#define VD55G1_REG_OIF_IMG_CTRL				CCI_REG8(0x030f)
>> +#define VD55G1_REG_MIPI_DATA_RATE			CCI_REG32_LE(0x0224)
>> +#define VD55G1_REG_PATGEN_CTRL				CCI_REG16_LE(0x0304)
>> +#define VD55G1_PATGEN_TYPE_SHIFT			4
>> +#define VD55G1_PATGEN_ENABLE				BIT(0)
>> +#define VD55G1_REG_MANUAL_ANALOG_GAIN			CCI_REG8(0x0501)
>> +#define VD55G1_REG_MANUAL_COARSE_EXPOSURE		CCI_REG16_LE(0x0502)
>> +#define VD55G1_REG_MANUAL_DIGITAL_GAIN			CCI_REG16_LE(0x0504)
>> +#define VD55G1_REG_APPLIED_COARSE_EXPOSURE		CCI_REG16_LE(0x00e8)
>> +#define VD55G1_REG_APPLIED_ANALOG_GAIN			CCI_REG16_LE(0x00ea)
>> +#define VD55G1_REG_APPLIED_DIGITAL_GAIN			CCI_REG16_LE(0x00ec)
>> +#define VD55G1_REG_AE_FORCE_COLDSTART			CCI_REG16_LE(0x0308)
>> +#define VD55G1_REG_AE_COLDSTART_EXP_TIME		CCI_REG32_LE(0x0374)
>> +#define VD55G1_REG_READOUT_CTRL				CCI_REG8(0x052e)
>> +#define VD55G1_REG_DARKCAL_CTRL				CCI_REG8(0x032a)
>> +#define VD55G1_DARKCAL_BYPASS				0
>> +#define VD55G1_DARKCAL_AUTO				1
>> +#define VD55G1_REG_DUSTER_CTRL				CCI_REG8(0x03ea)
>> +#define VD55G1_DUSTER_ENABLE				BIT(0)
>> +#define VD55G1_DUSTER_DISABLE				0
>> +#define VD55G1_DUSTER_DYN_ENABLE			BIT(1)
>> +#define VD55G1_DUSTER_RING_ENABLE			BIT(4)
>> +#define VD55G1_REG_AE_TARGET_PERCENTAGE			CCI_REG8(0x0486)
>> +#define VD55G1_REG_NEXT_CTX				CCI_REG16_LE(0x03e4)
>> +#define VD55G1_REG_EXPOSURE_USE_CASES			CCI_REG8(0x0312)
>> +#define VD55G1_EXPOSURE_USE_CASES_MULTI_CONTEXT		BIT(2)
>> +#define VD55G1_REG_EXPOSURE_MAX_COARSE			CCI_REG16_LE(0x0372)
>> +#define VD55G1_EXPOSURE_MAX_COARSE_DEF			0x7fff
>> +#define VD55G1_EXPOSURE_MAX_COARSE_SUB			446
>> +#define VD55G1_REG_CTX_REPEAT_COUNT_CTX0		CCI_REG16_LE(0x03dc)
>> +#define VD55G1_REG_CTX_REPEAT_COUNT_CTX1		CCI_REG16_LE(0x03de)
>> +
>> +#define VD55G1_REG_EXP_MODE(ctx) \
>> +	CCI_REG8(0x0500 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_FRAME_LENGTH(ctx) \
>> +	CCI_REG32_LE(0x050c + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_X_START(ctx) \
>> +	CCI_REG16_LE(0x0514 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_X_WIDTH(ctx) \
>> +	CCI_REG16_LE(0x0516 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_Y_START(ctx) \
>> +	CCI_REG16_LE(0x0510 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_Y_HEIGHT(ctx) \
>> +	CCI_REG16_LE(0x0512 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_GPIO_0_CTRL(ctx) \
>> +	CCI_REG8(0x051d + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_REG_VT_MODE(ctx) \
>> +	CCI_REG8(0x0536 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_VT_MODE_NORMAL 0
>> +#define VD55G1_VT_MODE_SUBTRACTION 1
>> +#define VD55G1_REG_MASK_FRAME_CTRL(ctx) \
>> +	CCI_REG8(0x0537 + VD55G1_CTX_OFFSET * (ctx))
>> +#define VD55G1_MASK_FRAME_CTRL_OUTPUT 0
>> +#define VD55G1_MASK_FRAME_CTRL_MASK 1
>> +#define VD55G1_REG_EXPOSURE_INSTANCE(ctx) \
>> +	CCI_REG32_LE(0x52D + VD55G1_CTX_OFFSET * (ctx))
>> +
>> +#define VD55G1_WIDTH					804
>> +#define VD55G1_HEIGHT					704
>> +#define VD55G1_DEFAULT_MODE				0
>> +#define VD55G1_NB_GPIOS					4
>> +#define VD55G1_MEDIA_BUS_FMT_DEF			MEDIA_BUS_FMT_Y8_1X8
>> +#define VD55G1_DGAIN_DEF				256
>> +#define VD55G1_AGAIN_DEF				19
>> +#define VD55G1_EXPO_MAX_TERM				64
>> +#define VD55G1_EXPO_DEF					500
>> +#define VD55G1_LINE_LENGTH_MIN				1128
>> +#define VD55G1_LINE_LENGTH_SUB_MIN			1344
>> +#define VD55G1_VBLANK_MIN				86
>> +#define VD55G1_VBLANK_MAX				0xffff
>> +#define VD55G1_FRAME_LENGTH_DEF				1860 /* 60 fps */
>> +#define VD55G1_MIPI_MARGIN				900
>> +#define VD55G1_CTX_OFFSET				0x50
>> +#define VD55G1_FWPATCH_REVISION_MAJOR			2
>> +#define VD55G1_FWPATCH_REVISION_MINOR			9
>> +
>> +static const u8 patch_array[] = {
>> +0x44, 0x03, 0x09, 0x02, 0xe6, 0x01, 0x42, 0x00, 0xea, 0x01, 0x42, 0x00, 0xf0,
> 
> The array contents should be indented.
> 
>> +0x01, 0x42, 0x00, 0xe6, 0x01, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4c, 0x00, 0x00,
>> +0xfa, 0x68, 0x40, 0x00, 0xe8, 0x09, 0xbe, 0x4c, 0x08, 0x00, 0xf2, 0x93, 0xdd,
>> +0x1c, 0x00, 0xc0, 0xe2, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x6b,
>> +0x80, 0x98, 0x7f, 0xfc, 0xef, 0x11, 0xc1, 0x0f, 0x82, 0x69, 0xbe, 0x0f, 0xac,
>> +0x58, 0x40, 0x00, 0xe8, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd, 0x1c, 0x00, 0x40,
>> +0xe3, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x84, 0xfa, 0x46, 0x0e, 0xe8, 0xe0,
>> +0x08, 0xde, 0x4a, 0x40, 0x84, 0xe0, 0xa5, 0x86, 0xa8, 0x7d, 0xfc, 0xef, 0x6b,
>> +0x80, 0x01, 0xbf, 0x28, 0x77, 0x0c, 0xef, 0x0b, 0x0e, 0x21, 0x78, 0x06, 0xc0,
>> +0x0b, 0xa5, 0xb5, 0x84, 0x06, 0x42, 0x98, 0xe1, 0x01, 0x81, 0x01, 0x42, 0x38,
>> +0xe0, 0x0c, 0xc4, 0x0e, 0x84, 0x46, 0x02, 0x84, 0xe0, 0x0c, 0x84, 0x11, 0x81,
>> +0x21, 0x81, 0x31, 0x81, 0x41, 0x81, 0x51, 0x81, 0xc1, 0x81, 0x05, 0x83, 0x0c,
>> +0x0c, 0x84, 0xf2, 0x93, 0xdd, 0x06, 0x40, 0x98, 0xe1, 0xc8, 0x80, 0x58, 0x82,
>> +0x48, 0xc0, 0x38, 0xc2, 0x29, 0x00, 0x10, 0xe0, 0x19, 0x00, 0x14, 0xe0, 0x09,
>> +0x00, 0x38, 0xe0, 0x5f, 0xb8, 0x5f, 0xa8, 0x5f, 0xa6, 0x5f, 0xa4, 0x5f, 0xa2,
>> +0x5f, 0xa0, 0x56, 0x41, 0x98, 0xe1, 0x18, 0x82, 0x28, 0x80, 0x38, 0xc0, 0x5f,
>> +0xa2, 0x19, 0x00, 0x20, 0xf8, 0x5f, 0xa4, 0x28, 0xc2, 0x5f, 0xa6, 0x39, 0x00,
>> +0x10, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x14, 0xe0, 0x5f, 0xa4, 0x29, 0x00, 0x18,
>> +0xe0, 0x5f, 0xa6, 0x39, 0x00, 0x40, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x44, 0xe0,
>> +0x5f, 0xa4, 0x29, 0x00, 0x1c, 0xe0, 0x5f, 0xa6, 0x39, 0x00, 0x38, 0xe0, 0x5f,
>> +0xa2, 0x19, 0x00, 0x20, 0xe0, 0x5f, 0xa4, 0x29, 0x00, 0x24, 0xe0, 0x5f, 0xa6,
>> +0x39, 0x00, 0x28, 0xe0, 0x5f, 0xa2, 0x19, 0x00, 0x2c, 0xe0, 0x5f, 0xa4, 0x29,
>> +0x00, 0x30, 0xe0, 0x5f, 0xa6, 0x09, 0x00, 0x34, 0xe0, 0x5f, 0xa2, 0x5f, 0xa4,
>> +0x5f, 0xa0, 0x4a, 0x0a, 0xfc, 0xfb, 0xe5, 0x82, 0x08, 0xde, 0x4a, 0x40, 0x88,
>> +0xe0, 0xf6, 0x40, 0x00, 0xe0, 0x01, 0x4e, 0x99, 0x78, 0x0a, 0xc0, 0x85, 0x80,
>> +0x98, 0x40, 0x00, 0xe8, 0x35, 0x81, 0xa8, 0x40, 0x00, 0xe8, 0x0b, 0x8c, 0x0c,
>> +0x0c, 0x84, 0xf2, 0xd5, 0xed, 0x83, 0xc1, 0x13, 0xc5, 0x93, 0xdd, 0xc3, 0xc1,
>> +0x83, 0xc1, 0x13, 0xc3, 0x93, 0xdd, 0xc3, 0xc1, 0x4c, 0x04, 0x04, 0xfa, 0xc6,
>> +0x0f, 0x94, 0xe0, 0x19, 0x0e, 0xc9, 0x65, 0x01, 0xc0, 0x28, 0xde, 0x0a, 0x42,
>> +0x80, 0xe0, 0x24, 0x02, 0x00, 0xfc, 0x16, 0xde, 0xa5, 0x8a, 0x19, 0x00, 0xb8,
>> +0xe0, 0x10, 0x02, 0x0c, 0xec, 0x1d, 0xe6, 0x14, 0x02, 0x88, 0x80, 0x4e, 0x04,
>> +0x01, 0x00, 0x10, 0x80, 0x25, 0x02, 0x08, 0x9c, 0x86, 0x02, 0x00, 0x80, 0x08,
>> +0x44, 0x00, 0x98, 0x55, 0x81, 0x11, 0x85, 0x45, 0x81, 0x11, 0x89, 0x25, 0x81,
>> +0x11, 0x83, 0x2b, 0x00, 0x24, 0xe0, 0x64, 0xc2, 0x0b, 0x84, 0x08, 0x51, 0x00,
>> +0xef, 0x2b, 0x80, 0x01, 0x83, 0x1b, 0x8c, 0x38, 0x7d, 0x5c, 0xef, 0x18, 0xde,
>> +0x0b, 0xa1, 0x25, 0x82, 0x0b, 0x0e, 0x88, 0xf9, 0x0a, 0x00, 0x00, 0xe8, 0x10,
>> +0x42, 0x04, 0x9c, 0x11, 0x4e, 0x0c, 0x80, 0x10, 0x40, 0x04, 0xf0, 0x4e, 0x05,
>> +0x01, 0x60, 0x10, 0xc0, 0x06, 0x88, 0x10, 0x40, 0xf8, 0xf3, 0x06, 0xde, 0x4c,
>> +0x0c, 0x04, 0xf2, 0x93, 0xdd, 0x0c, 0x04, 0x1c, 0xfe, 0xf6, 0x0f, 0x94, 0xe0,
>> +0x38, 0x9c, 0x46, 0x51, 0xfc, 0xe0, 0x46, 0x49, 0x38, 0xe2, 0x30, 0x46, 0xf8,
>> +0xf3, 0x36, 0x9c, 0xc6, 0x46, 0x0c, 0xe1, 0x34, 0x8c, 0x94, 0xa0, 0x4e, 0xa0,
>> +0x39, 0x06, 0x80, 0xe0, 0x4a, 0x46, 0x94, 0xe0, 0x05, 0x8c, 0x6a, 0x40, 0x80,
>> +0xe0, 0x2c, 0x0c, 0x00, 0xe2, 0x0b, 0x8c, 0xb8, 0x7c, 0x5c, 0xef, 0x0b, 0x8c,
>> +0x9e, 0xa0, 0xf8, 0x40, 0x60, 0xef, 0x0b, 0xa1, 0x5a, 0x40, 0x80, 0xe0, 0x65,
>> +0x88, 0x28, 0x02, 0x01, 0x40, 0x00, 0x80, 0x2a, 0x42, 0x9c, 0xe1, 0x28, 0x49,
>> +0x60, 0xef, 0x96, 0x4d, 0x9c, 0xe1, 0x01, 0x81, 0x06, 0x98, 0xd5, 0x81, 0x09,
>> +0x0e, 0xa1, 0x64, 0x01, 0xc0, 0x4a, 0x40, 0x88, 0xe0, 0x85, 0x80, 0xb8, 0x77,
>> +0xfc, 0xef, 0x35, 0x81, 0xc8, 0x77, 0xfc, 0xef, 0x08, 0x98, 0x4a, 0x00, 0xfc,
>> +0xfb, 0x55, 0xfc, 0xe8, 0x4a, 0x60, 0xef, 0x1a, 0x44, 0x9c, 0xe1, 0x35, 0x81,
>> +0x1a, 0x4e, 0x9c, 0xe9, 0x1c, 0x00, 0x00, 0xe2, 0x0c, 0x0c, 0x1c, 0xf6, 0x93,
>> +0xdd, 0x0d, 0xc3, 0x1a, 0x41, 0x08, 0xe4, 0x0a, 0x40, 0x84, 0xe1, 0x0c, 0x00,
>> +0x00, 0xe2, 0x93, 0xdd, 0x4c, 0x04, 0x1c, 0xfa, 0x86, 0x52, 0xec, 0xe1, 0x08,
>> +0xa6, 0x65, 0x12, 0x24, 0xf8, 0x0e, 0x02, 0x99, 0x7a, 0x00, 0xc0, 0x00, 0x40,
>> +0xa0, 0xf3, 0x06, 0xa6, 0x0b, 0x8c, 0x08, 0x49, 0x00, 0xef, 0x85, 0x12, 0x28,
>> +0xf8, 0x02, 0x02, 0xfc, 0xed, 0xf6, 0x47, 0xfd, 0x6f, 0xe0, 0xff, 0x04, 0xe2,
>> +0x14, 0x04, 0xc0, 0xe0, 0x0f, 0x86, 0x2f, 0xa0, 0x0b, 0x8c, 0x2e, 0xe2, 0x08,
>> +0x48, 0x00, 0xef, 0x86, 0x02, 0x84, 0xfe, 0x0e, 0x05, 0x09, 0x7d, 0x00, 0xc0,
>> +0x05, 0x52, 0x08, 0xf8, 0x18, 0x7d, 0xfc, 0xef, 0x4a, 0x40, 0x80, 0xe0, 0x09,
>> +0x12, 0x04, 0xc0, 0x65, 0x12, 0x20, 0xf8, 0x00, 0x40, 0x40, 0xdc, 0x01, 0x52,
>> +0x04, 0xc0, 0x0e, 0x00, 0x41, 0x78, 0xf5, 0xc5, 0x6d, 0xc0, 0xb5, 0x82, 0x05,
>> +0x10, 0x10, 0xe0, 0x11, 0xf1, 0x0f, 0x82, 0x05, 0x50, 0x10, 0xe0, 0x05, 0x10,
>> +0x10, 0xe0, 0xfe, 0x02, 0xf0, 0xff, 0x0f, 0x82, 0x85, 0x83, 0x15, 0x10, 0x10,
>> +0xe0, 0x16, 0x00, 0x91, 0x6e, 0x69, 0xcd, 0x21, 0xf1, 0x6d, 0xc1, 0x01, 0x83,
>> +0x2f, 0x82, 0x26, 0x00, 0x00, 0x80, 0x2f, 0xa0, 0x25, 0x50, 0x10, 0xe0, 0x05,
>> +0x10, 0x10, 0xe0, 0x11, 0xa1, 0xfe, 0x04, 0xf0, 0xff, 0x06, 0x42, 0x00, 0x80,
>> +0x0f, 0x84, 0x0f, 0xa2, 0x05, 0x50, 0x10, 0xe0, 0x16, 0x00, 0x91, 0x6e, 0x69,
>> +0xcd, 0x6d, 0xc1, 0x71, 0x8d, 0x16, 0x00, 0x79, 0x61, 0x2d, 0xcb, 0x86, 0x0e,
>> +0x00, 0x80, 0x6d, 0xc1, 0x56, 0x0e, 0x00, 0xc0, 0x0b, 0x8c, 0x1b, 0x8e, 0x71,
>> +0x52, 0x0c, 0xf8, 0x08, 0x43, 0x00, 0xef, 0x05, 0x52, 0x14, 0xf8, 0x15, 0x10,
>> +0x28, 0xe0, 0x70, 0x04, 0x04, 0xec, 0x31, 0xe1, 0x29, 0x9e, 0x1f, 0x86, 0x1f,
>> +0xa4, 0x15, 0x50, 0x28, 0xe0, 0x86, 0x42, 0x3c, 0xe0, 0x0e, 0x04, 0x9d, 0x64,
>> +0x9b, 0xc2, 0x05, 0x52, 0x1c, 0xf8, 0x78, 0xa6, 0x48, 0x77, 0xfc, 0xef, 0x4a,
>> +0x40, 0x80, 0xe0, 0x70, 0x4e, 0x10, 0xdc, 0x1e, 0x00, 0x81, 0x70, 0xeb, 0xcb,
>> +0x70, 0x4e, 0xec, 0x93, 0x6d, 0xc1, 0x11, 0x85, 0x36, 0x02, 0x00, 0x80, 0x76,
>> +0xa6, 0x11, 0x52, 0x10, 0xf8, 0x05, 0x10, 0x40, 0xe0, 0xfe, 0x47, 0x0c, 0xff,
>> +0x14, 0x04, 0xa0, 0xe0, 0x0f, 0x86, 0x0f, 0xa4, 0x05, 0x50, 0x40, 0xe0, 0x05,
>> +0x10, 0x28, 0xe0, 0xfe, 0x47, 0xfd, 0x7f, 0xe3, 0xff, 0x14, 0x04, 0xd0, 0xe0,
>> +0x0f, 0x86, 0x2f, 0xa0, 0x20, 0x00, 0x01, 0x6c, 0x00, 0xd0, 0x05, 0x50, 0x28,
>> +0xe0, 0x0b, 0x8c, 0xf8, 0x7e, 0xfc, 0xee, 0x0e, 0x03, 0x59, 0x78, 0xf5, 0xc5,
>> +0x0d, 0xc2, 0x05, 0x52, 0x0c, 0xf8, 0x08, 0xa6, 0x46, 0x42, 0xb4, 0xe0, 0x18,
>> +0x84, 0x00, 0x40, 0xf4, 0x93, 0x00, 0x40, 0x08, 0xdc, 0x1b, 0xa1, 0x06, 0xa6,
>> +0x05, 0x10, 0x40, 0x80, 0x04, 0x00, 0x50, 0x9c, 0x65, 0x8a, 0x05, 0x10, 0x44,
>> +0xe0, 0xf6, 0x43, 0xfd, 0x6f, 0x00, 0xf8, 0x0f, 0x82, 0x06, 0x02, 0x01, 0x60,
>> +0x1e, 0xc0, 0x0f, 0xa2, 0x05, 0x50, 0x44, 0xe0, 0x05, 0x10, 0x44, 0xe0, 0x0e,
>> +0x02, 0x00, 0xf8, 0x0f, 0x82, 0x09, 0xf6, 0x05, 0x50, 0x44, 0xe0, 0x05, 0x10,
>> +0x40, 0xe0, 0x04, 0x00, 0x54, 0xfc, 0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x40,
>> +0xe0, 0x04, 0x00, 0xcc, 0xfc, 0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x40, 0xe0,
>> +0x04, 0x00, 0x4c, 0xfc, 0x05, 0x50, 0x40, 0xe0, 0x05, 0x10, 0x40, 0xe0, 0x04,
>> +0x00, 0xd0, 0xfc, 0x05, 0x50, 0x40, 0xe0, 0x4c, 0x0c, 0x1c, 0xf2, 0x93, 0xdd,
>> +0xc3, 0xc1, 0xc6, 0x40, 0xfc, 0xe0, 0x04, 0x80, 0xc6, 0x44, 0x0c, 0xe1, 0x15,
>> +0x04, 0x0c, 0xf8, 0x0a, 0x80, 0x06, 0x07, 0x04, 0xe0, 0x03, 0x42, 0x48, 0xe1,
>> +0x46, 0x02, 0x40, 0xe2, 0x08, 0xc6, 0x44, 0x88, 0x06, 0x46, 0x0e, 0xe0, 0x86,
>> +0x01, 0x84, 0xe0, 0x33, 0x80, 0x39, 0x06, 0xd8, 0xef, 0x0a, 0x46, 0x80, 0xe0,
>> +0x31, 0xbf, 0x06, 0x06, 0x00, 0xc0, 0x31, 0x48, 0x60, 0xe0, 0x34, 0x88, 0x49,
>> +0x06, 0x40, 0xe1, 0x40, 0x48, 0x7c, 0xf3, 0x41, 0x46, 0x40, 0xe1, 0x24, 0x8a,
>> +0x39, 0x04, 0x10, 0xe0, 0x39, 0xc2, 0x31, 0x44, 0x10, 0xe0, 0x14, 0xc4, 0x1b,
>> +0xa5, 0x11, 0x83, 0x11, 0x40, 0x25, 0x6a, 0x01, 0xc0, 0x08, 0x5c, 0x00, 0xda,
>> +0x15, 0x00, 0xcc, 0xe0, 0x25, 0x00, 0xf8, 0xe0, 0x1b, 0x85, 0x08, 0x5c, 0x00,
>> +0x9a, 0x4e, 0x03, 0x01, 0x60, 0x10, 0xc0, 0x29, 0x00, 0x1c, 0xe4, 0x18, 0x84,
>> +0x20, 0x44, 0xf8, 0xf3, 0x2f, 0xa2, 0x21, 0x40, 0x1c, 0xe4, 0x93, 0xdd, 0x0c,
>> +0x00, 0x80, 0xfa, 0x15, 0x00, 0x3c, 0xe0, 0x21, 0x81, 0x31, 0x85, 0x21, 0x42,
>> +0x60, 0xe0, 0x15, 0x00, 0x44, 0xe0, 0x31, 0x42, 0x40, 0xe1, 0x15, 0x00, 0x34,
>> +0xe0, 0x21, 0x42, 0x20, 0xe0, 0x15, 0x00, 0x34, 0xe0, 0xd6, 0x04, 0x10, 0xe0,
>> +0x23, 0x42, 0x30, 0xe0, 0x15, 0x00, 0x34, 0xe0, 0x86, 0x44, 0x04, 0xe0, 0x23,
>> +0x42, 0x38, 0xe0, 0x05, 0x00, 0x30, 0xe0, 0xc6, 0x02, 0x08, 0xe0, 0x13, 0x40,
>> +0x10, 0xe3, 0xe8, 0x56, 0x40, 0xef, 0x06, 0x40, 0x0c, 0xe1, 0x04, 0x80, 0x06,
>> +0x02, 0x94, 0xe0, 0x2b, 0x02, 0xc4, 0xea, 0x3b, 0x00, 0x78, 0xe2, 0x20, 0x44,
>> +0xfd, 0x73, 0x07, 0xc0, 0x30, 0x46, 0x01, 0x70, 0xf8, 0xc0, 0x3f, 0xa4, 0x33,
>> +0x40, 0x78, 0xe2, 0x0a, 0x84, 0x0c, 0x08, 0x80, 0xf2, 0xf8, 0x3b, 0x3c, 0xff,
>> +0xc3, 0xc1, 0x06, 0x40, 0x0c, 0xe1, 0x04, 0x80, 0x1b, 0x00, 0x40, 0xe4, 0x19,
>> +0xc2, 0x13, 0x40, 0x40, 0xe4, 0x1b, 0x00, 0x40, 0xe4, 0x19, 0xc4, 0x13, 0x40,
>> +0x40, 0xe4, 0x93, 0xdd, 0xc6, 0x43, 0xec, 0xe0, 0x46, 0x41, 0xfc, 0xe0, 0x24,
>> +0x84, 0x04, 0x80, 0x31, 0x81, 0x4a, 0x44, 0x80, 0xe0, 0x86, 0x44, 0x0c, 0xe1,
>> +0x09, 0x00, 0x6c, 0xe0, 0xc4, 0x8a, 0x8e, 0x47, 0xfc, 0x9f, 0x01, 0x42, 0x51,
>> +0x78, 0x0c, 0xc0, 0x31, 0x58, 0x90, 0xe0, 0x34, 0x8a, 0x41, 0xbf, 0x06, 0x08,
>> +0x00, 0xc0, 0x41, 0x46, 0xa0, 0xe0, 0x34, 0x8a, 0x51, 0x81, 0xf6, 0x0b, 0x00,
>> +0xc0, 0x51, 0x46, 0xd0, 0xe0, 0x34, 0x8a, 0x01, 0xbf, 0x51, 0x46, 0xe0, 0xe0,
>> +0x44, 0x84, 0x0a, 0x48, 0x84, 0xe0, 0x75, 0x86, 0x54, 0xca, 0x49, 0x88, 0x44,
>> +0x06, 0x88, 0xe1, 0x36, 0x94, 0x4a, 0x46, 0x80, 0xe0, 0x34, 0xca, 0x47, 0xc6,
>> +0x11, 0x8d, 0x41, 0x46, 0xd0, 0xe0, 0x34, 0x88, 0x76, 0x02, 0x00, 0xc0, 0x06,
>> +0x00, 0x00, 0xc0, 0x16, 0x8c, 0x14, 0x88, 0x01, 0x42, 0xc0, 0xe1, 0x01, 0x42,
>> +0xe0, 0xe1, 0x01, 0x42, 0xf0, 0xe1, 0x93, 0xdd, 0x34, 0xca, 0x41, 0x85, 0x46,
>> +0x8c, 0x34, 0xca, 0x06, 0x48, 0x00, 0xe0, 0x41, 0x46, 0xd0, 0xe0, 0x34, 0x88,
>> +0x41, 0x83, 0x46, 0x8c, 0x34, 0x88, 0x01, 0x46, 0xc0, 0xe1, 0x01, 0x46, 0xe0,
>> +0xe1, 0x01, 0x46, 0xf0, 0xe1, 0x09, 0x02, 0x20, 0xe0, 0x14, 0xca, 0x03, 0x42,
>> +0x58, 0xe0, 0x93, 0xdd, 0xc3, 0xc1, 0x4c, 0x04, 0x04, 0xfa, 0x46, 0x4e, 0x08,
>> +0xe1, 0x06, 0x4c, 0x0c, 0xe1, 0x0a, 0x9e, 0x14, 0x98, 0x05, 0x42, 0x44, 0xe0,
>> +0x10, 0x00, 0xe1, 0x65, 0x03, 0xc0, 0x78, 0x41, 0x00, 0xe8, 0x08, 0x9c, 0x0b,
>> +0xa1, 0x04, 0x98, 0x06, 0x02, 0x10, 0x80, 0x13, 0x40, 0xf8, 0x86, 0x65, 0x82,
>> +0x00, 0x00, 0xe1, 0x65, 0x03, 0xc0, 0xa8, 0x40, 0x00, 0xe8, 0x14, 0x98, 0x04,
>> +0x00, 0xa0, 0xfc, 0x03, 0x42, 0x00, 0xe7, 0x4c, 0x0c, 0x04, 0xf2, 0x93, 0xdd,
>> +0x0a, 0x80, 0x93, 0xdd, 0x0c, 0x04, 0x00, 0xfa, 0x06, 0x02, 0xec, 0xe1, 0x64,
>> +0x84, 0x15, 0x0c, 0x2c, 0xe0, 0x14, 0x02, 0xa0, 0xfc, 0x15, 0x4c, 0x2c, 0xe0,
>> +0xd8, 0x40, 0x00, 0xe8, 0x14, 0xd8, 0x09, 0x82, 0x14, 0x02, 0x00, 0xfc, 0x1f,
>> +0xa0, 0x1e, 0xd8, 0x01, 0x85, 0x0c, 0x0c, 0x00, 0xf2, 0xe8, 0x32, 0x2c, 0xff,
>> +0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x00, 0xfa, 0x6b, 0x80, 0xf6, 0x01, 0x94,
>> +0xe0, 0x08, 0x80, 0x4a, 0x40, 0x80, 0xe0, 0x45, 0x86, 0x06, 0x40, 0x0c, 0xe1,
>> +0x04, 0x80, 0xc6, 0x02, 0x40, 0xe2, 0x09, 0x00, 0xd0, 0xe0, 0x14, 0x84, 0x1b,
>> +0xa5, 0x15, 0x84, 0x07, 0xc5, 0x09, 0x82, 0x18, 0x41, 0x00, 0xe8, 0x46, 0x43,
>> +0xfc, 0xe0, 0x14, 0x84, 0x19, 0x02, 0xd8, 0xe0, 0x19, 0x82, 0x0b, 0x83, 0x16,
>> +0x00, 0x00, 0xc0, 0x01, 0x4c, 0x00, 0xc0, 0x0c, 0x0c, 0x00, 0xf2, 0x93, 0xdd,
>> +0xc3, 0xc1, 0x4a, 0x00, 0x00, 0xe0, 0x0c, 0x00, 0x00, 0xe2, 0x93, 0xdd, 0xc3,
>> +0xc1, 0x46, 0x40, 0x84, 0xe0, 0x11, 0xaf, 0x13, 0x40, 0x6c, 0xec, 0x11, 0xb3,
>> +0x13, 0x40, 0x70, 0xec, 0xc6, 0x43, 0xf0, 0xe0, 0x13, 0x40, 0xdc, 0xec, 0xc6,
>> +0x02, 0x24, 0xe0, 0x1c, 0x80, 0x93, 0xdd, 0x4c, 0x00, 0x00, 0xfa, 0xc8, 0x60,
>> +0x7c, 0xef, 0xe8, 0x61, 0x7c, 0xef, 0x28, 0x7e, 0x80, 0xef, 0xc6, 0x40, 0x98,
>> +0xe1, 0x11, 0x83, 0x16, 0x80, 0x46, 0x01, 0x10, 0xe1, 0x11, 0x81, 0x16, 0x80,
>> +0x4c, 0x08, 0x00, 0xf2, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x0c, 0xfa, 0x6b,
>> +0x80, 0x04, 0x98, 0x7b, 0x82, 0x56, 0x42, 0xb4, 0xe0, 0x88, 0x84, 0x05, 0x00,
>> +0x10, 0xe0, 0x09, 0x86, 0x0b, 0xa5, 0x46, 0x02, 0x00, 0x80, 0x06, 0x05, 0x00,
>> +0x80, 0x25, 0x82, 0x0b, 0xa3, 0xa5, 0x80, 0x0b, 0xa1, 0x06, 0x00, 0xf4, 0xef,
>> +0xd5, 0x84, 0x11, 0x85, 0x21, 0x91, 0x0b, 0x8e, 0x88, 0x74, 0x10, 0xef, 0x0b,
>> +0xa1, 0xf5, 0x82, 0x0a, 0x9e, 0x1a, 0x9c, 0x24, 0x98, 0x07, 0xe0, 0x0f, 0xa2,
>> +0x0e, 0xca, 0x0a, 0xde, 0x1a, 0xdc, 0x24, 0x98, 0x03, 0xb0, 0x07, 0xe0, 0x0f,
>> +0xa2, 0x0e, 0xc8, 0x01, 0x81, 0x0c, 0x0c, 0x0c, 0xf2, 0x93, 0xdd, 0xc3, 0xc1,
>> +0x0c, 0x04, 0x7c, 0xfa, 0x46, 0x42, 0x9c, 0xe0, 0x0b, 0x02, 0x04, 0xe3, 0xf0,
>> +0x1e, 0x30, 0xec, 0x0b, 0xa3, 0x35, 0x96, 0x8e, 0x01, 0x01, 0x60, 0x10, 0xc0,
>> +0x0e, 0xfc, 0xc6, 0x05, 0xd0, 0xe1, 0x0b, 0x82, 0x31, 0x81, 0x10, 0x16, 0x00,
>> +0xe5, 0x20, 0x10, 0x20, 0xe7, 0x0e, 0xbe, 0xb5, 0x85, 0x94, 0xfc, 0xa4, 0xbe,
>> +0x82, 0x4c, 0x9c, 0xf0, 0x05, 0x0c, 0x40, 0xe0, 0x11, 0x89, 0x93, 0x8e, 0xa3,
>> +0x8e, 0x58, 0x44, 0x00, 0xe8, 0x15, 0x0c, 0xc0, 0xf8, 0x04, 0x0c, 0x80, 0xfb,
>> +0x0c, 0xed, 0x0b, 0x82, 0x1b, 0x8c, 0x48, 0x44, 0x00, 0xe8, 0x15, 0x10, 0x1c,
>> +0xfc, 0x0e, 0xa8, 0x0b, 0x82, 0x1b, 0x8c, 0xd8, 0x43, 0x00, 0xe8, 0x71, 0x88,
>> +0x0e, 0xa4, 0x0a, 0x0e, 0x40, 0xe0, 0x35, 0xf8, 0x04, 0xbe, 0x14, 0xbc, 0x81,
>> +0xa0, 0x03, 0x8e, 0x0e, 0xbe, 0x04, 0xfc, 0x11, 0x82, 0x3b, 0x82, 0x03, 0x8e,
>> +0x0e, 0xfc, 0x3b, 0xa9, 0x06, 0x0e, 0x00, 0xc0, 0x35, 0x5e, 0x00, 0xc0, 0xd5,
>> +0xfa, 0xc6, 0x01, 0xd0, 0xe1, 0x7b, 0x80, 0x04, 0x9e, 0x11, 0x91, 0x98, 0x41,
>> +0x00, 0xe8, 0x24, 0x9c, 0x46, 0x42, 0x9c, 0xe0, 0x6b, 0x82, 0x03, 0x4c, 0xc4,
>> +0xe0, 0x11, 0x91, 0x0b, 0x84, 0xf8, 0x40, 0x00, 0xe8, 0x19, 0x0e, 0x20, 0xe5,
>> +0x03, 0x4c, 0xc0, 0xe0, 0x0b, 0x82, 0x08, 0x72, 0xfc, 0xef, 0x01, 0x4c, 0x24,
>> +0xf9, 0xf1, 0x98, 0x0c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd, 0x4c, 0x00, 0x00, 0xfa,
>> +0x48, 0x65, 0x2c, 0xef, 0x4c, 0x08, 0x00, 0xf2, 0x93, 0xdd, 0xc3, 0xc1, 0x0c,
>> +0x04, 0x00, 0xfa, 0x6b, 0x82, 0x78, 0x6e, 0xfc, 0xee, 0x46, 0x42, 0xec, 0xe0,
>> +0x24, 0x84, 0x24, 0x02, 0x80, 0xfa, 0x1d, 0xcc, 0x11, 0x83, 0xf5, 0x82, 0x24,
>> +0x02, 0xa0, 0xe1, 0x14, 0x02, 0x80, 0xfa, 0x1d, 0xcc, 0x11, 0x85, 0x15, 0x82,
>> +0x27, 0xe1, 0x24, 0x02, 0x80, 0xfa, 0x1d, 0xcc, 0x11, 0x89, 0x86, 0x02, 0x00,
>> +0x80, 0x0c, 0x0c, 0x00, 0xf2, 0x18, 0x17, 0xfc, 0xfe, 0xc3, 0xc1, 0x0c, 0x04,
>> +0x00, 0xfa, 0x06, 0x41, 0x8c, 0xe0, 0x1b, 0x00, 0xec, 0xe4, 0x1b, 0xa3, 0x75,
>> +0x84, 0x11, 0x81, 0x8e, 0x05, 0x01, 0x60, 0x10, 0xc0, 0x00, 0x06, 0xc0, 0xe5,
>> +0x95, 0x81, 0x44, 0x88, 0x1d, 0xee, 0x75, 0x80, 0x4e, 0xc1, 0x25, 0x81, 0x4e,
>> +0xcd, 0x21, 0x88, 0x11, 0x82, 0x0a, 0x02, 0x40, 0xe0, 0xd5, 0xfc, 0x56, 0x00,
>> +0x00, 0xe1, 0x18, 0x80, 0x1b, 0xa1, 0xc5, 0x84, 0x08, 0x82, 0x4a, 0x00, 0xfc,
>> +0xfb, 0x45, 0x84, 0x86, 0x4d, 0x84, 0xe1, 0x04, 0x98, 0x05, 0x00, 0x10, 0xe0,
>> +0x4a, 0x40, 0x80, 0xe0, 0x45, 0x82, 0x11, 0x81, 0x0b, 0x8c, 0x58, 0x76, 0x28,
>> +0xef, 0x0b, 0x8c, 0x0c, 0x0c, 0x00, 0xf2, 0x88, 0x35, 0x28, 0xff, 0x0c, 0x0c,
>> +0x00, 0xf2, 0x93, 0xdd, 0xc3, 0xc1, 0x46, 0x41, 0xfc, 0xe0, 0x04, 0x80, 0x09,
>> +0x00, 0x80, 0xe0, 0x09, 0x9e, 0x0b, 0xa3, 0x75, 0x82, 0x46, 0x41, 0x80, 0xe1,
>> +0x04, 0x80, 0xc6, 0x42, 0x8c, 0xe0, 0x04, 0xc2, 0x00, 0x40, 0x00, 0xf2, 0x07,
>> +0xcf, 0x06, 0x84, 0x06, 0x40, 0x84, 0xe0, 0x15, 0x00, 0x28, 0xe5, 0x1c, 0xc2,
>> +0x93, 0xdd, 0x0b, 0xa1, 0xc6, 0x00, 0xa0, 0xe1, 0x15, 0x00, 0x04, 0xf8, 0x05,
>> +0x84, 0x21, 0x8b, 0x2c, 0x84, 0x14, 0x80, 0x2c, 0x84, 0x14, 0x82, 0x2c, 0x84,
>> +0x15, 0x00, 0x10, 0xe0, 0x21, 0xa1, 0x21, 0x42, 0x10, 0xe0, 0x05, 0x00, 0x14,
>> +0xe0, 0x01, 0x88, 0x75, 0x83, 0x21, 0x85, 0x2c, 0x84, 0x14, 0x80, 0x06, 0x46,
>> +0x00, 0xe0, 0x2c, 0x84, 0x14, 0x82, 0x2c, 0x84, 0x14, 0xc0, 0x21, 0xa1, 0x21,
>> +0x42, 0x20, 0xe0, 0x14, 0xc2, 0x31, 0x42, 0x20, 0xe0, 0x15, 0x00, 0x10, 0xe0,
>> +0x21, 0x42, 0x20, 0xe0, 0x05, 0x00, 0x14, 0xe0, 0x01, 0x90, 0x06, 0x42, 0x00,
>> +0xe0, 0x16, 0x80, 0x93, 0xdd, 0xc3, 0xc1, 0x0c, 0x04, 0x7c, 0xfa, 0x4a, 0x40,
>> +0x80, 0xe0, 0xf0, 0x1e, 0x30, 0xec, 0xe5, 0x82, 0xa6, 0x40, 0x00, 0xe1, 0x1a,
>> +0x80, 0x2a, 0xc0, 0x3a, 0xc2, 0x13, 0x40, 0x10, 0xe0, 0x1a, 0x82, 0x23, 0x40,
>> +0x18, 0xe0, 0x33, 0x40, 0x1c, 0xe0, 0x13, 0x40, 0x14, 0xe0, 0xf8, 0x61, 0x68,
>> +0xef, 0xc6, 0x13, 0x00, 0xe1, 0x15, 0x12, 0x28, 0xf8, 0x0b, 0x02, 0x2c, 0xe0,
>> +0x1b, 0x02, 0x24, 0xe0, 0x8a, 0x00, 0xa5, 0x64, 0x03, 0xc0, 0x35, 0x82, 0x0a,
>> +0x4e, 0x9c, 0xe1, 0x1a, 0x03, 0x11, 0x6f, 0x02, 0xc0, 0xe8, 0x13, 0x01, 0x20,
>> +0x00, 0xc0, 0x1f, 0xa0, 0x5a, 0x42, 0x80, 0xe0, 0x0a, 0x4e, 0x9c, 0xe1, 0x68,
>> +0x13, 0x00, 0xa0, 0x09, 0x12, 0x78, 0xf8, 0xa1, 0x81, 0xf0, 0x02, 0x10, 0xe4,
>> +0x07, 0xc4, 0x0c, 0xfc, 0xf0, 0x00, 0x20, 0xe4, 0xa6, 0x91, 0xa8, 0x53, 0x74,
>> +0xef, 0x05, 0x12, 0x30, 0xf8, 0x25, 0x12, 0x28, 0xf8, 0x61, 0x87, 0x09, 0x00,
>> +0x48, 0xe0, 0x81, 0x85, 0x09, 0x86, 0x0b, 0xa7, 0x26, 0x0c, 0x00, 0xc0, 0x0b,
>> +0xa1, 0x0b, 0x04, 0x28, 0xe0, 0x16, 0x0c, 0x00, 0x80, 0x03, 0x52, 0x04, 0xf8,
>> +0x0b, 0x04, 0x20, 0xe0, 0x0c, 0xa6, 0x1b, 0x04, 0x2c, 0xe0, 0x3b, 0x04, 0x28,
>> +0xe0, 0x4b, 0x04, 0x20, 0xe0, 0x13, 0x86, 0x3b, 0x04, 0x24, 0xe0, 0x10, 0x0a,
>> +0x04, 0xec, 0x1a, 0xfc, 0x33, 0x88, 0x30, 0x06, 0x04, 0xec, 0x12, 0x4e, 0x94,
>> +0xf0, 0x32, 0x48, 0x84, 0xf0, 0x4c, 0xe4, 0x7c, 0xa4, 0xcb, 0x04, 0x28, 0xe0,
>> +0x14, 0x08, 0x84, 0xe1, 0xcd, 0xc9, 0xc2, 0x58, 0x90, 0x91, 0x42, 0x4e, 0x94,
>> +0x90, 0xc3, 0x52, 0x04, 0x98, 0x73, 0x52, 0x00, 0x80, 0x5b, 0x04, 0x20, 0xe0,
>> +0x5d, 0xc9, 0x52, 0x40, 0x90, 0x91, 0x42, 0x48, 0x8c, 0x90, 0x03, 0x52, 0x04,
>> +0x80, 0x43, 0x52, 0x08, 0x80, 0x3b, 0x04, 0x2c, 0xe0, 0x49, 0x04, 0xb8, 0xe0,
>> +0x33, 0x52, 0x1c, 0xf8, 0x2b, 0x04, 0x24, 0xe0, 0x4b, 0xab, 0x23, 0x52, 0x18,
>> +0xf8, 0x65, 0x8a, 0x4b, 0xa9, 0xe5, 0x90, 0x4b, 0xa7, 0x22, 0x44, 0x84, 0xd0,
>> +0x32, 0x46, 0x84, 0xd0, 0x33, 0x52, 0x1c, 0xd8, 0x23, 0x52, 0x18, 0xd8, 0x95,
>> +0x96, 0x20, 0x44, 0xf9, 0x73, 0xff, 0xc0, 0x27, 0xc3, 0x23, 0x82, 0x23, 0x52,
>> +0x18, 0xf8, 0x24, 0x02, 0x80, 0xfb, 0x04, 0x00, 0x80, 0xfb, 0x2b, 0x8c, 0x58,
>> +0x52, 0x74, 0xef, 0x1b, 0x12, 0x1c, 0xf8, 0x2a, 0xfc, 0x0c, 0xe4, 0x17, 0xc3,
>> +0x13, 0x84, 0x13, 0x52, 0x1c, 0xf8, 0x0b, 0x12, 0x04, 0xf8, 0x14, 0x02, 0x80,
>> +0xfb, 0x2b, 0x8c, 0x68, 0x51, 0x74, 0xef, 0xc5, 0x87, 0x20, 0x44, 0xe1, 0x73,
>> +0xff, 0xc0, 0x27, 0xc7, 0x23, 0x82, 0x23, 0x52, 0x18, 0xf8, 0x24, 0x02, 0x80,
>> +0xfb, 0x04, 0x00, 0x80, 0xfb, 0x2b, 0x8c, 0x78, 0x57, 0x74, 0xef, 0x1b, 0x12,
>> +0x1c, 0xf8, 0x2a, 0xfc, 0x0c, 0xe4, 0x17, 0xc7, 0x13, 0x84, 0x13, 0x52, 0x1c,
>> +0xf8, 0x0b, 0x12, 0x04, 0xf8, 0x14, 0x02, 0x80, 0xfb, 0x2b, 0x8c, 0x88, 0x56,
>> +0x74, 0xef, 0xe5, 0x83, 0x20, 0x44, 0xf1, 0x73, 0xff, 0xc0, 0x27, 0xc5, 0x23,
>> +0x82, 0x23, 0x52, 0x18, 0xf8, 0x24, 0x02, 0x80, 0xfb, 0x04, 0x00, 0x80, 0xfb,
>> +0x2b, 0x8c, 0x18, 0x52, 0x74, 0xef, 0x1b, 0x12, 0x1c, 0xf8, 0x2a, 0xfc, 0x0c,
>> +0xe4, 0x17, 0xc5, 0x13, 0x84, 0x13, 0x52, 0x1c, 0xf8, 0x0b, 0x12, 0x04, 0xf8,
>> +0x14, 0x02, 0x80, 0xfb, 0x2b, 0x8c, 0x28, 0x51, 0x74, 0xef, 0x7b, 0x80, 0x7c,
>> +0xa4, 0x08, 0x91, 0xa3, 0x52, 0x1c, 0xe0, 0xa3, 0x52, 0x24, 0xe0, 0x0b, 0xa1,
>> +0x83, 0x52, 0x1c, 0x80, 0x83, 0x52, 0x24, 0x80, 0x89, 0x12, 0x78, 0xf8, 0xf6,
>> +0x57, 0xfc, 0xef, 0x6b, 0x12, 0x1c, 0xf8, 0xab, 0x12, 0x18, 0xf8, 0xd6, 0x57,
>> +0xfc, 0x8f, 0x8b, 0xa3, 0xa0, 0x40, 0x00, 0x9c, 0xa5, 0x86, 0x64, 0x00, 0x80,
>> +0xfb, 0x1b, 0x90, 0xf8, 0x7d, 0xf8, 0xee, 0x6b, 0x80, 0xa4, 0x00, 0x80, 0xfb,
>> +0x1b, 0x90, 0x98, 0x7d, 0xf8, 0xee, 0x15, 0x12, 0x28, 0xf8, 0x19, 0x02, 0xb8,
>> +0xe0, 0x1b, 0xad, 0x95, 0x82, 0x1a, 0xa6, 0xa0, 0x44, 0xf9, 0x73, 0xff, 0xc0,
>> +0x27, 0xc3, 0x13, 0x94, 0x10, 0x02, 0x08, 0xec, 0x1c, 0xe4, 0x23, 0x52, 0x18,
>> +0xf8, 0x1b, 0x12, 0x04, 0xf8, 0x03, 0x96, 0x03, 0x52, 0x28, 0xe0, 0x1c, 0xe6,
>> +0x0a, 0xa6, 0x1a, 0xe4, 0x63, 0x96, 0x63, 0x52, 0x20, 0xe0, 0x73, 0x52, 0x10,
>> +0xe0, 0x03, 0x52, 0x14, 0xe0, 0x13, 0x52, 0x18, 0xe0, 0x98, 0x52, 0x74, 0xef,
>> +0x09, 0x12, 0x8c, 0xe0, 0x0b, 0xa1, 0x01, 0x81, 0x01, 0x52, 0x90, 0xe0, 0x65,
>> +0x82, 0x05, 0x12, 0x30, 0xf8, 0x09, 0x00, 0xa8, 0xe0, 0x0a, 0x00, 0x0c, 0xf8,
>> +0x16, 0x00, 0x00, 0xc0, 0x01, 0x52, 0x90, 0xc0, 0x46, 0x41, 0x84, 0xe0, 0x0a,
>> +0x80, 0x0a, 0x4e, 0x9c, 0xe9, 0x1a, 0x00, 0x08, 0xe0, 0x38, 0x01, 0x01, 0x20,
>> +0x00, 0xc0, 0x0b, 0x12, 0x1c, 0xe0, 0x1b, 0x12, 0x24, 0xe0, 0x2b, 0x12, 0x28,
>> +0xe0, 0x03, 0x52, 0x2c, 0xe0, 0x0b, 0x12, 0x20, 0xe0, 0x13, 0x52, 0x34, 0xe0,
>> +0x23, 0x52, 0x38, 0xe0, 0x03, 0x52, 0x30, 0xe0, 0x0c, 0x00, 0x00, 0xe2, 0xf1,
>> +0x98, 0x0c, 0x0c, 0x7c, 0xf2, 0x93, 0xdd, 0x13, 0xa9, 0x00, 0x00, 0xa8, 0xc1,
>> +0x40, 0x00, 0x68, 0x04, 0xa0, 0xe0, 0x40, 0x6c, 0x40, 0x00, 0xe8, 0x34, 0xc8,
>> +0xe0, 0xfc, 0x91, 0x40, 0x00, 0x68, 0x1f, 0xb8, 0xe0, 0x30, 0x16, 0x41, 0x00,
>> +0x28, 0x39, 0x74, 0xe0, 0xb0, 0x7e, 0x40, 0x00, 0xe8, 0x38, 0xc0, 0xe0, 0x30,
>> +0x04, 0x41, 0x00, 0x48, 0x1b, 0x80, 0xe0, 0x30, 0x2e, 0x40, 0x00, 0x88, 0x0c,
>> +0xec, 0xe0, 0x10, 0x9f, 0x40, 0x00, 0x88, 0x08, 0xb4, 0xe0, 0x10, 0x01, 0x41,
>> +0x00, 0x68, 0x01, 0x84, 0xe0, 0x54, 0xd6, 0x40, 0x00, 0xc8, 0x1a, 0x98, 0xe0,
>> +0xd0, 0xc8, 0x40, 0x00, 0x68, 0x08, 0xa0, 0xe0, 0x80, 0xdb, 0x40, 0x00, 0xe8,
>> +0x35, 0x94, 0xe0, 0x74, 0xff, 0x40, 0x00, 0xa8, 0x11, 0x80, 0xe0, 0xf8, 0x89,
>> +0x40, 0x00, 0x88, 0x16, 0xbc, 0xe0, 0x00, 0x90, 0x40, 0x00, 0x08, 0x35, 0xb8,
>> +0xe0, 0x7c, 0x73, 0x40, 0x00, 0x88, 0x1b, 0xc8, 0xe0, 0xf4, 0xff, 0x40, 0x00,
>> +0x68, 0x39, 0x80, 0xe0, 0xa4, 0xa4, 0x40, 0x00, 0xa8, 0x16, 0xb0, 0xe0, 0x50,
>> +0xc9, 0x40, 0x00, 0x28, 0x3a, 0x98, 0xe0, 0x00, 0xb9, 0x00, 0x00, 0xb6, 0x85,
>> +0x00, 0x00,
>> +};
>> +
>> +static const char * const vd55g1_tp_menu[] = {
>> +	"Disabled",
>> +	"Dgrey",
>> +	"PN28",
>> +};
>> +
>> +static const s64 vd55g1_ev_bias_menu[] = {
>> +	-3000, -2500, -2000, -1500, -1000, -500,
>> +	    0,
>> +	  500,  1000,  1500,  2000,  2500, 3000,
>> +};
>> +
>> +static const char * const vd55g1_hdr_menu[] = {
>> +	"No HDR",
>> +	/*
>> +	 * This mode acquires 2 frames on the sensor, the first one is ditched
>> +	 * out and only used for auto exposure data, the second one is output to
>> +	 * the host
>> +	 */
>> +	"Internal subtraction",
>> +};
>> +
>> +static const char * const vd55g1_supply_name[] = {
>> +	"vcore",
>> +	"vddio",
>> +	"vana",
>> +};
>> +
>> +/* Will be filled on device tree parse */
>> +static u64 link_freq[1];
> 
> This doesn't seem to belong here (it's device specific!).
> 
>> +
>> +enum vd55g1_hdr_mode {
>> +	VD55G1_NO_HDR,
>> +	VD55G1_HDR_SUB,
>> +};
>> +
>> +enum vd55g1_bin_mode {
>> +	VD55G1_BIN_MODE_NORMAL,
>> +	VD55G1_BIN_MODE_DIGITAL_X2,
>> +	VD55G1_BIN_MODE_DIGITAL_X4,
>> +};
>> +
>> +enum vd55g1_gpio_mode {
>> +	VD55G1_GPIO_MODE_IN = 0x01,
>> +	VD55G1_GPIO_MODE_STROBE = 0x02,
>> +};
>> +
>> +struct vd55g1_mode {
>> +	u32 width;
>> +	u32 height;
>> +};
>> +
>> +struct vd55g1_fmt_desc {
>> +	u32 code;
>> +	u8 bpp;
>> +	u8 data_type;
>> +};
>> +
>> +static const struct vd55g1_fmt_desc vd55g1_mbus_codes[] = {
>> +	{
>> +		.code = MEDIA_BUS_FMT_Y8_1X8,
>> +		.bpp = 8,
>> +		.data_type = MIPI_CSI2_DT_RAW8,
>> +	},
>> +	{
>> +		.code = MEDIA_BUS_FMT_Y10_1X10,
>> +		.bpp = 10,
>> +		.data_type = MIPI_CSI2_DT_RAW10,
>> +	},
>> +};
>> +
>> +static const struct vd55g1_mode vd55g1_supported_modes[] = {
>> +	{
>> +		.width = VD55G1_WIDTH,
>> +		.height = VD55G1_HEIGHT,
>> +	},
>> +	{
>> +		.width = 800,
>> +		.height = VD55G1_HEIGHT,
>> +	},
>> +	{
>> +		.width = 800,
>> +		.height = 600,
>> +	},
>> +	{
>> +		.width = 640,
>> +		.height = 480,
>> +	},
>> +	{
>> +		.width = 320,
>> +		.height = 240,
>> +	},
>> +};
>> +
>> +enum vd55g1_expo_state {
>> +	VD55G1_EXP_AUTO,
>> +	VD55G1_EXP_FREEZE,
>> +	VD55G1_EXP_MANUAL,
>> +	VD55G1_EXP_SINGLE_STEP,
>> +	VD55G1_EXP_BYPASS,
>> +};
>> +
>> +struct vblank_limits {
>> +	u16 min;
>> +	u16 def;
>> +	u16 max;
>> +};
>> +
>> +struct vd55g1 {
>> +	struct i2c_client *i2c_client;
>> +	struct v4l2_subdev sd;
>> +	struct media_pad pad;
>> +	struct regulator_bulk_data supplies[ARRAY_SIZE(vd55g1_supply_name)];
>> +	struct gpio_desc *reset_gpio;
>> +	struct clk *xclk;
>> +	struct regmap *regmap;
>> +	u32 xclk_freq;
>> +	u16 oif_ctrl;
>> +	enum vd55g1_gpio_mode gpios[VD55G1_NB_GPIOS];
>> +	unsigned long ext_leds_mask;
>> +	int data_rate_in_mbps;
>> +	u32 pixel_clock;
>> +	struct v4l2_ctrl_handler ctrl_handler;
>> +	struct v4l2_ctrl *pixel_rate_ctrl;
>> +	struct v4l2_ctrl *vblank_ctrl;
>> +	struct v4l2_ctrl *hblank_ctrl;
>> +	struct {
>> +		struct v4l2_ctrl *hflip_ctrl;
>> +		struct v4l2_ctrl *vflip_ctrl;
>> +	};
>> +	struct v4l2_ctrl *patgen_ctrl;
>> +	struct {
>> +		struct v4l2_ctrl *ae_ctrl;
>> +		struct v4l2_ctrl *expo_ctrl;
>> +		struct v4l2_ctrl *again_ctrl;
>> +		struct v4l2_ctrl *dgain_ctrl;
>> +	};
>> +	struct v4l2_ctrl *ae_lock_ctrl;
>> +	struct v4l2_ctrl *ae_bias_ctrl;
>> +	struct v4l2_ctrl *led_ctrl;
>> +	struct v4l2_ctrl *hdr_ctrl;
>> +};
>> +
>> +static inline struct vd55g1 *to_vd55g1(struct v4l2_subdev *sd)
>> +{
>> +	return container_of_const(sd, struct vd55g1, sd);
>> +}
>> +
>> +static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
>> +{
>> +	return &container_of_const(ctrl->handler, struct vd55g1,
>> +		ctrl_handler)->sd;
> 
> Please align just right of the opening parenthesis.
> 
>> +}
>> +
>> +static u8 get_bpp_by_code(struct vd55g1 *sensor, u32 code)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	unsigned int i;
>> +
>> +	for (i = 0; i < ARRAY_SIZE(vd55g1_mbus_codes); i++) {
>> +		if (vd55g1_mbus_codes[i].code == code)
>> +			return vd55g1_mbus_codes[i].bpp;
>> +	}
>> +	/* Should never happen */
>> +	dev_warn(&client->dev, "Unsupported code %d. default to 8 bpp", code);
>> +	return 8;
>> +}
>> +
>> +static u8 get_data_type_by_code(struct vd55g1 *sensor, u32 code)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	unsigned int i;
>> +
>> +	for (i = 0; i < ARRAY_SIZE(vd55g1_mbus_codes); i++) {
>> +		if (vd55g1_mbus_codes[i].code == code)
>> +			return vd55g1_mbus_codes[i].data_type;
>> +	}
>> +	/* Should never happen */
>> +	dev_warn(&client->dev, "Unsupported code %d. default to MIPI_CSI2_DT_RAW8 data type",
>> +		 code);
>> +	return MIPI_CSI2_DT_RAW8;
>> +}
>> +
>> +static s32 get_pixel_rate(struct vd55g1 *sensor)
>> +{
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_mbus_framefmt *format =
>> +		v4l2_subdev_state_get_format(state, 0);
>> +
>> +	return div64_u64((u64)sensor->data_rate_in_mbps,
>> +			 get_bpp_by_code(sensor, format->code));
>> +}
>> +
>> +static s32 get_min_line_length(struct vd55g1 *sensor)
>> +{
>> +	u32 mipi_req_line_time;
>> +	u32 mipi_req_line_length;
>> +	u32 min_line_length;
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop =
>> +		v4l2_subdev_state_get_crop(state, 0);
>> +	const struct v4l2_mbus_framefmt *format =
>> +		v4l2_subdev_state_get_format(state, 0);
>> +
>> +	/* MIPI required time */
>> +	mipi_req_line_time = (crop->width *
>> +			      get_bpp_by_code(sensor, format->code) +
>> +			      VD55G1_MIPI_MARGIN) /
>> +			      (sensor->data_rate_in_mbps / MEGA);
>> +	mipi_req_line_length = mipi_req_line_time * sensor->pixel_clock /
>> +			       HZ_PER_MHZ;
>> +
>> +	/* Absolute time required for ADCs to convert pixels */
>> +	min_line_length = VD55G1_LINE_LENGTH_MIN;
>> +	if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB)
>> +		min_line_length = VD55G1_LINE_LENGTH_SUB_MIN;
>> +
>> +	/* Respect both constraint */
>> +	return max(min_line_length, mipi_req_line_length);
>> +}
>> +
>> +static unsigned int get_hblank_min(struct vd55g1 *sensor)
>> +{
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
>> +
>> +	return get_min_line_length(sensor) - crop->width;
>> +}
>> +
>> +static struct vblank_limits get_vblank_limits(struct vd55g1 *sensor)
>> +{
>> +	struct vblank_limits limits;
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
>> +
>> +	limits.min = VD55G1_VBLANK_MIN;
>> +	limits.def = VD55G1_FRAME_LENGTH_DEF - crop->height;
>> +	limits.max = VD55G1_VBLANK_MAX - crop->height;
>> +
>> +	return limits;
> 
> Instead of returning a struct, how about passing a pointer to it as an
> argument?
> 
>> +}
>> +
>> +#define vd55g1_read(sensor, reg, val, err) \
>> +	cci_read((sensor)->regmap, reg, val, err)
>> +
>> +#define vd55g1_write(sensor, reg, val, err) \
>> +	cci_write((sensor)->regmap, reg, (u64)val, err)
> 
> I don't think you need to cast explicitly here.
> 
>> +
>> +static int vd55g1_write_array(struct vd55g1 *sensor, u32 reg, unsigned int len,
>> +			      const u8 *array, int *err)
>> +{
>> +	unsigned int chunk_sz = 1024;
>> +	unsigned int sz;
>> +	int ret = 0;
>> +
>> +	if (err && *err)
>> +		return *err;
>> +
>> +	/*
>> +	 * This loop isn't necessary but in certains conditions (platforms, cpu
>> +	 * load, etc.) it has been observed that the bulk write could timeout.
>> +	 */
>> +	while (len) {
>> +		sz = min(len, chunk_sz);
>> +		ret = regmap_bulk_write(sensor->regmap, reg, array, sz);
>> +		if (ret < 0)
>> +			goto out;
>> +		len -= sz;
>> +		reg += sz;
>> +		array += sz;
>> +	}
>> +
>> +out:
>> +	if (ret && err)
>> +		*err = ret;
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_poll_reg(struct vd55g1 *sensor, u32 reg, u8 poll_val,
>> +			   int *err)
>> +{
>> +	unsigned int val = 0;
>> +	int ret;
>> +
>> +	if (err && *err)
>> +		return *err;
>> +
>> +	ret = regmap_read_poll_timeout(sensor->regmap, CCI_REG_ADDR(reg), val,
>> +				       (val == poll_val), 2000,
>> +				       500 * USEC_PER_MSEC);
>> +
>> +	if (ret && err)
>> +		*err = ret;
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_wait_state(struct vd55g1 *sensor, int state, int *err)
>> +{
>> +	return vd55g1_poll_reg(sensor, VD55G1_REG_SYSTEM_FSM, state, err);
>> +}
>> +
>> +static int vd55g1_get_regulators(struct vd55g1 *sensor)
>> +{
>> +	int i;
> 
> unsigned int?
> 
>> +
>> +	for (i = 0; i < ARRAY_SIZE(vd55g1_supply_name); i++)
>> +		sensor->supplies[i].supply = vd55g1_supply_name[i];
>> +
>> +	return devm_regulator_bulk_get(&sensor->i2c_client->dev,
>> +				       ARRAY_SIZE(vd55g1_supply_name),
>> +				       sensor->supplies);
>> +}
>> +
>> +static int vd55g1_prepare_clock_tree(struct vd55g1 *sensor)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	/* Double data rate */
>> +	u32 mipi_freq = link_freq[0] * 2;
>> +	u32 sys_clk, mipi_div, pixel_div;
>> +	int ret = 0;
>> +
>> +	if (sensor->xclk_freq < 6 * HZ_PER_MHZ ||
>> +	    sensor->xclk_freq > 27 * HZ_PER_MHZ) {
>> +		dev_err(&client->dev,
>> +			"Only 6Mhz-27Mhz clock range supported. Provided %lu MHz\n",
>> +			sensor->xclk_freq / HZ_PER_MHZ);
>> +		return -EINVAL;
>> +	}
>> +
>> +	if (mipi_freq < 250 * HZ_PER_MHZ ||
>> +	    mipi_freq > 1200 * HZ_PER_MHZ) {
>> +		dev_err(&client->dev,
>> +			"Only 250Mhz-1200Mhz link frequency range supported. Provided %lu MHz\n",
>> +			mipi_freq / HZ_PER_MHZ);
>> +		return -EINVAL;
>> +	}
>> +
>> +	if (mipi_freq <= 300 * HZ_PER_MHZ)
>> +		mipi_div = 4;
>> +	else if (mipi_freq <= 600 * HZ_PER_MHZ)
>> +		mipi_div = 2;
>> +	else
>> +		mipi_div = 1;
>> +
>> +	sys_clk = mipi_freq * mipi_div;
>> +
>> +	if (sys_clk <= 780 * HZ_PER_MHZ)
>> +		pixel_div = 5;
>> +	else if (sys_clk <= 900 * HZ_PER_MHZ)
>> +		pixel_div = 6;
>> +	else
>> +		pixel_div = 8;
>> +
>> +	sensor->pixel_clock = sys_clk / pixel_div;
>> +	/* Frequency to data rate is 1:1 ratio for MIPI */
>> +	sensor->data_rate_in_mbps = mipi_freq;
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_update_patgen(struct vd55g1 *sensor, u32 patgen_index)
>> +{
>> +	static const u8 index2val[] = {
>> +		0x0, 0x22, 0x28
> 
> Could you add aa BUILD_BUG_ON() to check the array's length is the same
> than that of the test pattern menu?

I was just wondering how I could solve this issue. This is a sweet
discovery. Thank you.

> 
>> +	};
>> +	u32 pattern = index2val[patgen_index];
>> +	u32 reg = pattern << VD55G1_PATGEN_TYPE_SHIFT;
>> +	u8 darkcal = VD55G1_DARKCAL_AUTO;
>> +	u8 duster = VD55G1_DUSTER_RING_ENABLE | VD55G1_DUSTER_DYN_ENABLE |
>> +		    VD55G1_DUSTER_ENABLE;
>> +	int ret = 0;
>> +
>> +	if (pattern != 0) {
>> +		reg |= VD55G1_PATGEN_ENABLE;
>> +		/*
>> +		 * Take care of dark calibaration and duster to not mess up the
>> +		 * test pattern output.
>> +		 */
>> +		darkcal = VD55G1_DARKCAL_BYPASS;
>> +		duster = VD55G1_DUSTER_DISABLE;
>> +	}
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_DARKCAL_CTRL, darkcal, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_DUSTER_CTRL, duster, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_PATGEN_CTRL, reg, &ret);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_update_expo_cluster(struct vd55g1 *sensor, bool is_auto)
>> +{
>> +	enum vd55g1_expo_state expo_state = is_auto ? VD55G1_EXP_AUTO :
>> +						      VD55G1_EXP_MANUAL;
>> +	int ret = 0;
>> +
>> +	if (sensor->ae_ctrl->is_new)
>> +		vd55g1_write(sensor, VD55G1_REG_EXP_MODE(0), expo_state, &ret);
>> +
>> +	if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB &&
>> +	    sensor->hdr_ctrl->is_new) {
>> +		vd55g1_write(sensor, VD55G1_REG_EXP_MODE(1), VD55G1_EXP_BYPASS,
>> +			     &ret);
>> +		if (ret)
>> +			return ret;
>> +	}
>> +
>> +	if (!is_auto && sensor->expo_ctrl->is_new)
>> +		vd55g1_write(sensor, VD55G1_REG_MANUAL_COARSE_EXPOSURE,
>> +			     sensor->expo_ctrl->val, &ret);
>> +
>> +	if (!is_auto && sensor->again_ctrl->is_new)
>> +		vd55g1_write(sensor, VD55G1_REG_MANUAL_ANALOG_GAIN,
>> +			     sensor->again_ctrl->val, &ret);
>> +
>> +	if (!is_auto && sensor->dgain_ctrl->is_new) {
>> +		vd55g1_write(sensor, VD55G1_REG_MANUAL_DIGITAL_GAIN,
>> +			     sensor->dgain_ctrl->val, &ret);
>> +	}
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_lock_exposure(struct vd55g1 *sensor, u32 lock_val)
>> +{
>> +	bool ae_lock = lock_val & V4L2_LOCK_EXPOSURE;
>> +	enum vd55g1_expo_state expo_state = ae_lock ? VD55G1_EXP_FREEZE :
>> +						      VD55G1_EXP_AUTO;
>> +	int ret = 0;
>> +
>> +	if (sensor->ae_ctrl->val == V4L2_EXPOSURE_AUTO)
>> +		vd55g1_write(sensor, VD55G1_REG_EXP_MODE(0), expo_state, &ret);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_read_expo_cluster(struct vd55g1 *sensor)
>> +{
>> +	u64 exposure = 0;
>> +	u64 again = 0;
>> +	u64 dgain = 0;
>> +	int ret = 0;
>> +
>> +	vd55g1_read(sensor, VD55G1_REG_APPLIED_COARSE_EXPOSURE, &exposure,
>> +		    &ret);
>> +	vd55g1_read(sensor, VD55G1_REG_APPLIED_ANALOG_GAIN, &again, &ret);
>> +	vd55g1_read(sensor, VD55G1_REG_APPLIED_DIGITAL_GAIN, &dgain, &ret);
>> +	if (ret)
>> +		return ret;
>> +
>> +	sensor->expo_ctrl->cur.val = exposure;
>> +	sensor->again_ctrl->cur.val = again;
>> +	sensor->dgain_ctrl->cur.val = dgain;
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_update_frame_length(struct vd55g1 *sensor,
>> +				      unsigned int frame_length)
>> +{
>> +	int ret = 0;
>> +
>> +	if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB) {
>> +		vd55g1_write(sensor, VD55G1_REG_FRAME_LENGTH(1), frame_length,
>> +			     &ret);
>> +	}
> 
> No need for braces.
> 
>> +	vd55g1_write(sensor, VD55G1_REG_FRAME_LENGTH(0), frame_length, &ret);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_update_exposure_target(struct vd55g1 *sensor, int index)
>> +{
>> +	/*
>> +	 * Find auto exposure target with: default target exposure * 2^EV
>> +	 * Defaut target exposure being 27 for the sensor.
>> +	 */
>> +	static const unsigned int index2exposure_target[] = {
>> +		3, 5, 7, 10, 14, 19, 27, 38, 54, 76, 108, 153, 216,
>> +	};
>> +	int exposure_target = index2exposure_target[index];
>> +
>> +	return vd55g1_write(sensor, VD55G1_REG_AE_TARGET_PERCENTAGE,
>> +			    exposure_target, NULL);
>> +}
>> +
>> +static int vd55g1_apply_cold_start(struct vd55g1 *sensor)
>> +{
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
>> +
>> +	/*
>> +	 * Cold start register is a single register expressed as exposure time
>> +	 * in us. This differ from status registers being a combination of
>> +	 * exposure, digital gain, and analog gain, requiring the following
>> +	 * format conversion.
>> +	 */
>> +	unsigned int line_length = crop->width + sensor->hblank_ctrl->val;
>> +	unsigned int line_time_us = DIV_ROUND_UP(line_length * MEGA,
>> +						 sensor->pixel_clock);
>> +	u8 d_gain = DIV_ROUND_CLOSEST(sensor->dgain_ctrl->val, 1 << 8);
>> +	u8 a_gain = DIV_ROUND_CLOSEST(32, (32 - sensor->again_ctrl->val));
>> +	unsigned int expo_us = sensor->expo_ctrl->val * d_gain * a_gain *
>> +			       line_time_us;
>> +	int ret = 0;
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_AE_FORCE_COLDSTART, 1, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_AE_COLDSTART_EXP_TIME, expo_us, &ret);
>> +
>> +	return ret;
>> +}
>> +
>> +static void vd55g1_update_img_pad_format(struct vd55g1 *sensor,
>> +					 const struct vd55g1_mode *mode,
>> +					 u32 code,
>> +					 struct v4l2_mbus_framefmt *fmt)
>> +{
>> +	fmt->code = code;
>> +	fmt->width = mode->width;
>> +	fmt->height = mode->height;
>> +	fmt->colorspace = V4L2_COLORSPACE_RAW;
>> +	fmt->field = V4L2_FIELD_NONE;
>> +	fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
>> +	fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
>> +	fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
>> +}
>> +
>> +static int vd55g1_update_hdr_mode(struct vd55g1 *sensor)
>> +{
>> +	int ret = 0;
>> +
>> +	switch (sensor->hdr_ctrl->val) {
>> +	case VD55G1_NO_HDR:
>> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_MAX_COARSE,
>> +			     VD55G1_EXPOSURE_MAX_COARSE_DEF, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_USE_CASES, 0, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_NEXT_CTX, 0x0, &ret);
>> +
>> +		vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX0, 0, &ret);
>> +
>> +		vd55g1_write(sensor, VD55G1_REG_VT_MODE(0),
>> +			     VD55G1_VT_MODE_NORMAL, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(0),
>> +			     VD55G1_MASK_FRAME_CTRL_OUTPUT, &ret);
>> +		break;
>> +	case VD55G1_HDR_SUB:
>> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_MAX_COARSE,
>> +			     VD55G1_EXPOSURE_MAX_COARSE_SUB, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_USE_CASES,
>> +			     VD55G1_EXPOSURE_USE_CASES_MULTI_CONTEXT, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_NEXT_CTX, 0x0001, &ret);
>> +
>> +		vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX0, 1, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_CTX_REPEAT_COUNT_CTX1, 1, &ret);
>> +
>> +		vd55g1_write(sensor, VD55G1_REG_VT_MODE(0),
>> +			     VD55G1_VT_MODE_NORMAL, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(0),
>> +			     VD55G1_MASK_FRAME_CTRL_MASK, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_INSTANCE(0), 0, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_VT_MODE(1),
>> +			     VD55G1_VT_MODE_SUBTRACTION, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_MASK_FRAME_CTRL(1),
>> +			     VD55G1_MASK_FRAME_CTRL_OUTPUT, &ret);
>> +		vd55g1_write(sensor, VD55G1_REG_EXPOSURE_INSTANCE(1), 1, &ret);
>> +		break;
>> +	default:
>> +		ret = -EINVAL;
>> +	}
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_set_framefmt(struct vd55g1 *sensor)
>> +{
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop =
>> +		v4l2_subdev_state_get_crop(state, 0);
>> +	const struct v4l2_mbus_framefmt *format =
>> +		v4l2_subdev_state_get_format(state, 0);
>> +	enum vd55g1_bin_mode binning;
>> +	int ret = 0;
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_FORMAT_CTRL,
>> +		     get_bpp_by_code(sensor, format->code), &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_OIF_IMG_CTRL,
>> +		     get_data_type_by_code(sensor, format->code), &ret);
>> +
>> +	switch (crop->width / format->width) {
>> +	case 1:
>> +	default:
>> +		binning = VD55G1_BIN_MODE_NORMAL;
>> +		break;
>> +	case 2:
>> +		binning = VD55G1_BIN_MODE_DIGITAL_X2;
>> +		break;
>> +	}
>> +	vd55g1_write(sensor, VD55G1_REG_READOUT_CTRL, binning, &ret);
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_X_START(0), crop->left, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_X_WIDTH(0), crop->width, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_Y_START(0), crop->top, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_Y_HEIGHT(0), crop->height, &ret);
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_X_START(1), crop->left, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_X_WIDTH(1), crop->width, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_Y_START(1), crop->top, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_Y_HEIGHT(1), crop->height, &ret);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_update_gpios(struct vd55g1 *sensor, unsigned long gpio_mask)
>> +{
>> +	unsigned long io;
>> +	u32 gpio_val;
>> +	int ret = 0;
>> +
>> +	for_each_set_bit(io, &gpio_mask, VD55G1_NB_GPIOS) {
>> +		gpio_val = sensor->gpios[io];
>> +
>> +		if (gpio_val == VD55G1_GPIO_MODE_STROBE &&
>> +		    sensor->led_ctrl->val == V4L2_FLASH_LED_MODE_NONE) {
>> +			gpio_val = VD55G1_GPIO_MODE_IN;
>> +			if (sensor->hdr_ctrl->val == VD55G1_HDR_SUB) {
>> +				/* Make its context 1 counterpart strobe too */
>> +				vd55g1_write(sensor,
>> +					     VD55G1_REG_GPIO_0_CTRL(1) + io,
>> +					     gpio_val, &ret);
>> +			}
>> +		}
>> +
>> +		ret = vd55g1_write(sensor, VD55G1_REG_GPIO_0_CTRL(0) + io,
>> +				   gpio_val, &ret);
>> +	}
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_ro_ctrls_setup(struct vd55g1 *sensor)
>> +{
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
>> +
>> +	return vd55g1_write(sensor, VD55G1_REG_LINE_LENGTH,
>> +			    crop->width + sensor->hblank_ctrl->val, NULL);
>> +}
>> +
>> +static void vd55g1_lock_ctrls(struct vd55g1 *sensor, bool enable)
>> +{
>> +	/* These settings cannot change during stream */
>> +	v4l2_ctrl_grab(sensor->hflip_ctrl, enable);
>> +	v4l2_ctrl_grab(sensor->vflip_ctrl, enable);
>> +	v4l2_ctrl_grab(sensor->patgen_ctrl, enable);
>> +	v4l2_ctrl_grab(sensor->hdr_ctrl, enable);
>> +	v4l2_ctrl_grab(sensor->hblank_ctrl, enable);
>> +}
>> +
>> +static int vd55g1_enable_streams(struct v4l2_subdev *sd,
>> +				 struct v4l2_subdev_state *state, u32 pad,
>> +				 u64 streams_mask)
>> +{
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
>> +	int ret = 0;
>> +
>> +	ret = pm_runtime_resume_and_get(&client->dev);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_EXT_CLOCK, sensor->xclk_freq, &ret);
>> +
>> +	/* configure output */
>> +	vd55g1_write(sensor, VD55G1_REG_MIPI_DATA_RATE,
>> +		     sensor->data_rate_in_mbps, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_OIF_CTRL, sensor->oif_ctrl, &ret);
>> +	vd55g1_write(sensor, VD55G1_REG_ISL_ENABLE, 0, &ret);
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	ret = vd55g1_set_framefmt(sensor);
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	/* Setup default GPIO values; could be overridden by V4L2 ctrl setup */
>> +	ret = vd55g1_update_gpios(sensor, GENMASK(VD55G1_NB_GPIOS - 1, 0));
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	ret = vd55g1_apply_cold_start(sensor);
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	/* Apply settings from V4L2 ctrls */
>> +	ret = __v4l2_ctrl_handler_setup(&sensor->ctrl_handler);
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	/* Also apply settings from read-only V4L2 ctrls */
>> +	ret = vd55g1_ro_ctrls_setup(sensor);
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	/* Start streaming */
>> +	vd55g1_write(sensor, VD55G1_REG_STBY, VD55G1_STBY_START_STREAM, &ret);
>> +	vd55g1_poll_reg(sensor, VD55G1_REG_STBY, 0, &ret);
>> +	vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_STREAMING, &ret);
>> +	if (ret)
>> +		goto err_rpm_put;
>> +
>> +	vd55g1_lock_ctrls(sensor, true);
>> +
>> +	return ret;
>> +
>> +err_rpm_put:
>> +	pm_runtime_put(&client->dev);
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_disable_streams(struct v4l2_subdev *sd,
>> +				  struct v4l2_subdev_state *state, u32 pad,
>> +				  u64 streams_mask)
>> +{
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
>> +	int ret = 0;
>> +
>> +	/* Retrieve Expo cluster to enable coldstart of AE */
>> +	ret = vd55g1_read_expo_cluster(sensor);
>> +
>> +	vd55g1_write(sensor, VD55G1_REG_STREAMING, VD55G1_STREAMING_STOP_STREAM,
>> +		     &ret);
>> +	vd55g1_poll_reg(sensor, VD55G1_REG_STREAMING, 0, &ret);
>> +	vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_SW_STBY, &ret);
>> +
>> +	if (ret)
>> +		dev_warn(&client->dev, "Can't disable stream");
>> +
>> +	vd55g1_lock_ctrls(sensor, false);
>> +
>> +	pm_runtime_mark_last_busy(&client->dev);
>> +	__pm_runtime_put_autosuspend(&client->dev);
> 
> You can just use pm_runtime_put_autosuspend(), the plan on how to merge the
> two has changed a little.
> 
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_patch(struct vd55g1 *sensor)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	u64 patch;
>> +	int ret = 0;
>> +
>> +	vd55g1_write_array(sensor, VD55G1_REG_FWPATCH_START_ADDR,
>> +			   sizeof(patch_array), patch_array, &ret);
> 
> Some things just won't change, will they? :-)

I'm still fighting :)

> 
>> +	vd55g1_write(sensor, VD55G1_REG_BOOT, VD55G1_BOOT_PATCH_SETUP, &ret);
>> +	vd55g1_poll_reg(sensor, VD55G1_REG_BOOT, 0, &ret);
>> +	if (ret) {
>> +		dev_err(&client->dev, "Failed to apply patch");
>> +		return ret;
>> +	}
>> +
>> +	vd55g1_read(sensor, VD55G1_REG_FWPATCH_REVISION, &patch, &ret);
>> +	if (patch != (VD55G1_FWPATCH_REVISION_MAJOR << 8) +
>> +	    VD55G1_FWPATCH_REVISION_MINOR) {
>> +		dev_err(&client->dev, "Bad patch version expected %d.%d got %d.%d",
>> +			VD55G1_FWPATCH_REVISION_MAJOR,
>> +			VD55G1_FWPATCH_REVISION_MINOR,
>> +			(u8)(patch >> 8), (u8)(patch & 0xff));
>> +		return -ENODEV;
>> +	}
>> +	dev_dbg(&client->dev, "patch %d.%d applied",
>> +		(u8)(patch >> 8), (u8)(patch & 0xff));
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_get_selection(struct v4l2_subdev *sd,
>> +				struct v4l2_subdev_state *sd_state,
>> +				struct v4l2_subdev_selection *sel)
>> +{
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(sd_state, 0);
>> +
>> +	switch (sel->target) {
>> +	case V4L2_SEL_TGT_CROP:
>> +		sel->r = *crop;
>> +		return 0;
>> +	case V4L2_SEL_TGT_NATIVE_SIZE:
>> +	case V4L2_SEL_TGT_CROP_DEFAULT:
>> +	case V4L2_SEL_TGT_CROP_BOUNDS:
>> +		sel->r.top = 0;
>> +		sel->r.left = 0;
>> +		sel->r.width = VD55G1_WIDTH;
>> +		sel->r.height = VD55G1_HEIGHT;
>> +		return 0;
>> +	}
>> +
>> +	return -EINVAL;
>> +}
>> +
>> +static int vd55g1_enum_mbus_code(struct v4l2_subdev *sd,
>> +				 struct v4l2_subdev_state *sd_state,
>> +				 struct v4l2_subdev_mbus_code_enum *code)
>> +{
>> +	if (code->index >= ARRAY_SIZE(vd55g1_mbus_codes))
>> +		return -EINVAL;
>> +
>> +	code->code = vd55g1_mbus_codes[code->index].code;
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_new_format_change_controls(struct vd55g1 *sensor)
>> +{
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
>> +	struct vblank_limits vblank;
>> +	unsigned int hblank;
>> +	unsigned int frame_length = 0;
>> +	unsigned int expo_max;
>> +	int ret;
>> +
>> +	/* Reset vblank and frame length to default */
>> +	vblank = get_vblank_limits(sensor);
>> +	ret = __v4l2_ctrl_modify_range(sensor->vblank_ctrl, vblank.min,
>> +				       vblank.max, 1, vblank.def);
>> +	if (ret)
>> +		return ret;
>> +
>> +	/* Max exposure changes with vblank */
>> +	frame_length = crop->height + sensor->vblank_ctrl->val;
>> +	expo_max = frame_length - VD55G1_EXPO_MAX_TERM;
>> +	ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max, 1,
>> +				       VD55G1_EXPO_DEF);
>> +	if (ret)
>> +		return ret;
>> +
>> +	/* Update pixel rate to reflect new bpp */
>> +	ret = __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_ctrl,
>> +				       get_pixel_rate(sensor));
>> +	if (ret)
>> +		return ret;
>> +
>> +	/* Update hblank according to new width */
>> +	hblank = get_hblank_min(sensor);
>> +	ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl, hblank, hblank, 1,
>> +				       hblank);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_set_pad_fmt(struct v4l2_subdev *sd,
>> +			      struct v4l2_subdev_state *sd_state,
>> +			      struct v4l2_subdev_format *sd_fmt)
>> +{
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	const struct vd55g1_mode *new_mode;
>> +	struct v4l2_mbus_framefmt *format;
>> +	struct v4l2_rect pad_crop;
>> +	unsigned int binning;
>> +
>> +	new_mode = v4l2_find_nearest_size(vd55g1_supported_modes,
>> +					  ARRAY_SIZE(vd55g1_supported_modes),
>> +					  width, height, sd_fmt->format.width,
>> +					  sd_fmt->format.height);
>> +
>> +	vd55g1_update_img_pad_format(sensor, new_mode, sd_fmt->format.code,
>> +				     &sd_fmt->format);
>> +
>> +	/*
>> +	 * Use binning to maximize the crop rectangle size, and centre it in the
>> +	 * sensor.
>> +	 */
>> +	binning = min(VD55G1_WIDTH / sd_fmt->format.width,
>> +		      VD55G1_HEIGHT / sd_fmt->format.height);
>> +	binning = min(binning, 2U);
>> +	pad_crop.width = sd_fmt->format.width * binning;
>> +	pad_crop.height = sd_fmt->format.height * binning;
>> +	pad_crop.left = (VD55G1_WIDTH - pad_crop.width) / 2;
>> +	pad_crop.top = (VD55G1_HEIGHT - pad_crop.height) / 2;
>> +
>> +	format = v4l2_subdev_state_get_format(sd_state, sd_fmt->pad);
>> +
>> +	*format = sd_fmt->format;
>> +
>> +	*v4l2_subdev_state_get_crop(sd_state, sd_fmt->pad) = pad_crop;
>> +	if (sd_fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
>> +		return vd55g1_new_format_change_controls(sensor);
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_init_state(struct v4l2_subdev *sd,
>> +			     struct v4l2_subdev_state *sd_state)
>> +{
>> +	unsigned int def_mode = VD55G1_DEFAULT_MODE;
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	struct v4l2_subdev_format fmt = { 0 };
>> +	struct v4l2_subdev_route routes[] = { 0 };
>> +	struct v4l2_subdev_krouting routing = {
>> +	    .num_routes = ARRAY_SIZE(routes),
>> +	    .routes = routes,
>> +	};
>> +	int ret;
>> +
>> +	/* Needed by v4l2_subdev_s_stream_helper(), even with 1 stream only */
>> +	routes[0].flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE;
> 
> Please assign in variable declaration.
> 
>> +	ret = v4l2_subdev_set_routing(sd, sd_state, &routing);
>> +	if (ret)
>> +		return ret;
>> +
>> +	vd55g1_update_img_pad_format(sensor, &vd55g1_supported_modes[def_mode],
>> +				     VD55G1_MEDIA_BUS_FMT_DEF, &fmt.format);
>> +
>> +	return vd55g1_set_pad_fmt(sd, sd_state, &fmt);
>> +}
>> +
>> +static int vd55g1_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(vd55g1_supported_modes))
>> +		return -EINVAL;
>> +
>> +	fse->min_width = vd55g1_supported_modes[fse->index].width;
>> +	fse->max_width = fse->min_width;
>> +	fse->min_height = vd55g1_supported_modes[fse->index].height;
>> +	fse->max_height = fse->min_height;
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct v4l2_subdev_internal_ops vd55g1_internal_ops = {
>> +	.init_state = vd55g1_init_state,
>> +};
>> +
>> +static const struct v4l2_subdev_pad_ops vd55g1_pad_ops = {
>> +	.enum_mbus_code = vd55g1_enum_mbus_code,
>> +	.get_fmt = v4l2_subdev_get_fmt,
>> +	.set_fmt = vd55g1_set_pad_fmt,
>> +	.get_selection = vd55g1_get_selection,
>> +	.enum_frame_size = vd55g1_enum_frame_size,
>> +	.enable_streams = vd55g1_enable_streams,
>> +	.disable_streams = vd55g1_disable_streams,
>> +};
>> +
>> +static const struct v4l2_subdev_video_ops vd55g1_video_ops = {
>> +	.s_stream = v4l2_subdev_s_stream_helper,
>> +};
>> +
>> +static const struct v4l2_subdev_ops vd55g1_subdev_ops = {
>> +	.video = &vd55g1_video_ops,
>> +	.pad = &vd55g1_pad_ops,
>> +};
>> +
>> +static int vd55g1_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> +	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
>> +	int ret = 0;
>> +
>> +	/* Interact with HW only when it is powered ON */
>> +	if (!pm_runtime_get_if_in_use(&client->dev))
>> +		return 0;
>> +
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_EXPOSURE_AUTO:
>> +		ret = vd55g1_read_expo_cluster(sensor);
>> +		break;
>> +	default:
>> +		ret = -EINVAL;
>> +		break;
>> +	}
>> +
>> +	pm_runtime_mark_last_busy(&client->dev);
>> +	pm_runtime_put_autosuspend(&client->dev);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_s_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> +	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	struct i2c_client *client = v4l2_get_subdevdata(sd);
>> +	unsigned int frame_length = 0;
>> +	unsigned int expo_max;
>> +	unsigned int hblank = get_hblank_min(sensor);
>> +	bool is_auto = false;
>> +	struct v4l2_subdev_state *state =
>> +		v4l2_subdev_get_locked_active_state(&sensor->sd);
>> +	const struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
>> +	int ret = 0;
>> +
>> +	if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
>> +		return 0;
>> +
>> +	/* Update controls state, range, etc. whatever the state of the HW */
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_VBLANK:
>> +		frame_length = crop->height + ctrl->val;
>> +		expo_max = frame_length - VD55G1_EXPO_MAX_TERM;
>> +		ret = __v4l2_ctrl_modify_range(sensor->expo_ctrl, 0, expo_max,
>> +					       1, VD55G1_EXPO_DEF);
>> +		break;
>> +	case V4L2_CID_EXPOSURE_AUTO:
>> +		is_auto = (ctrl->val == V4L2_EXPOSURE_AUTO);
>> +		__v4l2_ctrl_grab(sensor->ae_lock_ctrl, !is_auto);
>> +		__v4l2_ctrl_grab(sensor->ae_bias_ctrl, !is_auto);
>> +		break;
>> +	case V4L2_CID_HDR_SENSOR_MODE:
>> +		/* Discriminate if the userspace changed the control value */
>> +		if (ctrl->val != ctrl->cur.val) {
>> +			/* Max horizontal blanking changes with hdr mode */
>> +			ret = __v4l2_ctrl_modify_range(sensor->hblank_ctrl,
>> +						       hblank, hblank, 1,
>> +						       hblank);
>> +		}
>> +		break;
>> +	default:
>> +		break;
>> +	}
>> +
>> +	/* Don't modify hardware if controls modification failed */
>> +	if (ret)
>> +		return ret;
>> +
>> +	/* Interact with HW only when it is powered ON */
>> +	if (!pm_runtime_get_if_in_use(&client->dev))
>> +		return 0;
>> +
>> +	switch (ctrl->id) {
>> +	case V4L2_CID_HFLIP:
>> +		ret = vd55g1_write(sensor, VD55G1_REG_ORIENTATION,
>> +				   sensor->hflip_ctrl->val |
>> +					   (sensor->vflip_ctrl->val << 1),
>> +				   NULL);
>> +		break;
>> +	case V4L2_CID_TEST_PATTERN:
>> +		ret = vd55g1_update_patgen(sensor, ctrl->val);
>> +		break;
>> +	case V4L2_CID_EXPOSURE_AUTO:
>> +		ret = vd55g1_update_expo_cluster(sensor, is_auto);
>> +		break;
>> +	case V4L2_CID_3A_LOCK:
>> +		ret = vd55g1_lock_exposure(sensor, ctrl->val);
>> +		break;
>> +	case V4L2_CID_AUTO_EXPOSURE_BIAS:
>> +		/*
>> +		 * We use auto exposure target percentage register to control
>> +		 * exposure bias for more precision.
>> +		 */
>> +		ret = vd55g1_update_exposure_target(sensor, ctrl->val);
>> +		break;
>> +	case V4L2_CID_VBLANK:
>> +		ret = vd55g1_update_frame_length(sensor, frame_length);
>> +		break;
>> +	case V4L2_CID_FLASH_LED_MODE:
>> +		ret = vd55g1_update_gpios(sensor, sensor->ext_leds_mask);
>> +		break;
>> +	case V4L2_CID_HDR_SENSOR_MODE:
>> +		ret = vd55g1_update_hdr_mode(sensor);
>> +		break;
>> +	default:
>> +		ret = -EINVAL;
>> +		break;
>> +	}
>> +
>> +	pm_runtime_mark_last_busy(&client->dev);
>> +	pm_runtime_put_autosuspend(&client->dev);
>> +
>> +	return ret;
>> +}
>> +
>> +static const struct v4l2_ctrl_ops vd55g1_ctrl_ops = {
>> +	.g_volatile_ctrl = vd55g1_g_volatile_ctrl,
>> +	.s_ctrl = vd55g1_s_ctrl,
>> +};
>> +
>> +static int vd55g1_init_ctrls(struct vd55g1 *sensor)
>> +{
>> +	const struct v4l2_ctrl_ops *ops = &vd55g1_ctrl_ops;
>> +	struct v4l2_ctrl_handler *hdl = &sensor->ctrl_handler;
>> +	struct v4l2_ctrl *ctrl;
>> +	struct v4l2_fwnode_device_properties fwnode_props;
>> +	struct vblank_limits vblank;
>> +	unsigned int hblank;
>> +	int ret;
>> +
>> +	v4l2_ctrl_handler_init(hdl, 16);
>> +
>> +	/* Flip cluster */
>> +	sensor->hflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
>> +					       0, 1, 1, 0);
>> +	sensor->vflip_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
>> +					       0, 1, 1, 0);
>> +	v4l2_ctrl_cluster(2, &sensor->hflip_ctrl);
>> +
>> +	/* Exposition cluster */
>> +	sensor->ae_ctrl = v4l2_ctrl_new_std_menu(hdl, ops,
>> +						 V4L2_CID_EXPOSURE_AUTO, 1,
>> +						 ~0x3, V4L2_EXPOSURE_AUTO);
>> +	sensor->again_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
>> +					       0, 0x1c, 1, VD55G1_AGAIN_DEF);
>> +	sensor->dgain_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_DIGITAL_GAIN,
>> +					       256, 0xffff, 1,
>> +					       VD55G1_DGAIN_DEF);
>> +	sensor->expo_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE, 0,
>> +					      VD55G1_FRAME_LENGTH_DEF -
>> +					      VD55G1_EXPO_MAX_TERM,
>> +					      1, VD55G1_EXPO_DEF);
>> +	v4l2_ctrl_auto_cluster(4, &sensor->ae_ctrl, V4L2_EXPOSURE_MANUAL, true);
>> +
>> +	sensor->patgen_ctrl =
>> +		v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
>> +					     ARRAY_SIZE(vd55g1_tp_menu) - 1, 0,
>> +					     0, vd55g1_tp_menu);
>> +	ctrl = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ,
>> +				      ARRAY_SIZE(link_freq) - 1, 0, link_freq);
>> +	if (ctrl)
>> +		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>> +	sensor->pixel_rate_ctrl = v4l2_ctrl_new_std(hdl, ops,
>> +						    V4L2_CID_PIXEL_RATE, 1,
>> +						    INT_MAX, 1,
>> +						    get_pixel_rate(sensor));
>> +	if (sensor->pixel_rate_ctrl)
>> +		sensor->pixel_rate_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>> +	sensor->ae_lock_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_3A_LOCK,
>> +						 0, 1, 0, 0);
>> +	sensor->ae_bias_ctrl =
>> +		v4l2_ctrl_new_int_menu(hdl, ops,
>> +				       V4L2_CID_AUTO_EXPOSURE_BIAS,
>> +				       ARRAY_SIZE(vd55g1_ev_bias_menu) - 1,
>> +				       ARRAY_SIZE(vd55g1_ev_bias_menu) / 2,
>> +				       vd55g1_ev_bias_menu);
>> +	sensor->hdr_ctrl =
>> +		v4l2_ctrl_new_std_menu_items(hdl, ops,
>> +					     V4L2_CID_HDR_SENSOR_MODE,
>> +					     ARRAY_SIZE(vd55g1_hdr_menu) - 1, 0,
>> +					     VD55G1_NO_HDR, vd55g1_hdr_menu);
>> +	hblank = get_hblank_min(sensor);
>> +	sensor->hblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK,
>> +						hblank, hblank, 1, hblank);
>> +	if (sensor->hblank_ctrl)
>> +		sensor->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>> +	vblank = get_vblank_limits(sensor);
>> +	sensor->vblank_ctrl = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
>> +						vblank.min, vblank.max,
>> +						1, vblank.def);
>> +
>> +	/* Additional controls based on device tree properties */
>> +	if (sensor->ext_leds_mask) {
>> +		sensor->led_ctrl =
>> +			v4l2_ctrl_new_std_menu(hdl, ops,
>> +					       V4L2_CID_FLASH_LED_MODE,
>> +					       V4L2_FLASH_LED_MODE_FLASH, 0,
>> +					       V4L2_FLASH_LED_MODE_NONE);
>> +	}
>> +
>> +	if (hdl->error) {
>> +		ret = hdl->error;
>> +		goto free_ctrls;
>> +	}
> 
> You can drop this check, also v4l2_ctrl_new_fwnode_properties() will set
> the handler's error status.
> 
>> +
>> +	ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &fwnode_props);
>> +	if (ret)
>> +		goto free_ctrls;
>> +
>> +	ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &fwnode_props);
>> +	if (ret)
>> +		goto free_ctrls;
>> +
>> +	sensor->sd.ctrl_handler = hdl;
>> +	return 0;
>> +
>> +free_ctrls:
>> +	v4l2_ctrl_handler_free(hdl);
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_check_sensor_revision(struct vd55g1 *sensor)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	u64 device_rev;
>> +	int ret;
>> +
>> +	ret = vd55g1_read(sensor, VD55G1_REG_REVISION, &device_rev, NULL);
>> +	if (ret)
>> +		return ret;
>> +
>> +	if (device_rev != VD55G1_REVISION_CCB) {
>> +		dev_err(&client->dev, "Unsupported sensor revision (0x%x)\n",
>> +			(u16)device_rev);
>> +		return -ENODEV;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_detect(struct vd55g1 *sensor)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	u64 id;
>> +	int ret;
>> +
>> +	ret = vd55g1_read(sensor, VD55G1_REG_MODEL_ID, &id, NULL);
>> +	if (ret)
>> +		return ret;
>> +
>> +	if (id != VD55G1_MODEL_ID) {
>> +		dev_warn(&client->dev, "Unsupported sensor id %x", (u32)id);
>> +		return -ENODEV;
>> +	}
>> +
>> +	return vd55g1_check_sensor_revision(sensor);
>> +}
>> +
>> +static int vd55g1_power_on(struct device *dev)
>> +{
>> +	struct v4l2_subdev *sd = dev_get_drvdata(dev);
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +	int ret;
>> +
>> +	ret = regulator_bulk_enable(ARRAY_SIZE(vd55g1_supply_name),
>> +				    sensor->supplies);
>> +	if (ret) {
>> +		dev_err(dev, "Failed to enable regulators %d", ret);
>> +		return ret;
>> +	}
>> +
>> +	ret = clk_prepare_enable(sensor->xclk);
>> +	if (ret) {
>> +		dev_err(dev, "Failed to enable clock %d", ret);
>> +		goto disable_bulk;
>> +	}
>> +
>> +	gpiod_set_value_cansleep(sensor->reset_gpio, 0);
>> +	usleep_range(5000, 10000);
>> +	ret = vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_READY_TO_BOOT, NULL);
>> +	if (ret) {
>> +		dev_err(dev, "Sensor reset failed %d\n", ret);
>> +		goto disable_clock;
>> +	}
>> +
>> +	ret = vd55g1_detect(sensor);
>> +	if (ret) {
>> +		dev_err(dev, "Sensor detect failed %d", ret);
>> +		goto disable_clock;
>> +	}
>> +
>> +	ret = vd55g1_patch(sensor);
>> +	if (ret) {
>> +		dev_err(dev, "Sensor patch failed %d", ret);
>> +		goto disable_clock;
>> +	}
>> +
>> +	ret = vd55g1_wait_state(sensor, VD55G1_SYSTEM_FSM_SW_STBY, NULL);
>> +	if (ret) {
>> +		dev_err(dev, "Sensor waiting after patch failed %d",
>> +			ret);
>> +		goto disable_clock;
>> +	}
>> +
>> +	return 0;
>> +
>> +disable_clock:
>> +	gpiod_set_value_cansleep(sensor->reset_gpio, 1);
>> +	clk_disable_unprepare(sensor->xclk);
>> +disable_bulk:
>> +	regulator_bulk_disable(ARRAY_SIZE(vd55g1_supply_name),
>> +			       sensor->supplies);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_power_off(struct device *dev)
>> +{
>> +	struct v4l2_subdev *sd = dev_get_drvdata(dev);
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +
>> +	clk_disable_unprepare(sensor->xclk);
>> +	gpiod_set_value_cansleep(sensor->reset_gpio, 1);
>> +	regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies);
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_check_csi_conf(struct vd55g1 *sensor,
>> +				 struct fwnode_handle *endpoint)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	struct v4l2_fwnode_endpoint ep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
>> +	u8 n_lanes;
>> +	int ret = 0;
>> +
>> +	ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
>> +	if (ret)
>> +		return -EINVAL;
>> +
>> +	/* Check lanes number */
>> +	n_lanes = ep.bus.mipi_csi2.num_data_lanes;
>> +	if (n_lanes != 1) {
>> +		dev_err(&client->dev, "Sensor only supports 1 lane, found %d\n",
>> +			n_lanes);
>> +		ret = -EINVAL;
>> +		goto done;
>> +	}
>> +
>> +	/* Clock lane must be first */
>> +	if (ep.bus.mipi_csi2.clock_lane != 0) {
>> +		dev_err(&client->dev, "Clock lane must be mapped to lane 0\n");
>> +		ret = -EINVAL;
>> +		goto done;
>> +	}
>> +
>> +	/* Handle polarities in sensor configuration */
>> +	sensor->oif_ctrl = (ep.bus.mipi_csi2.lane_polarities[0] << 3) |
>> +			   (ep.bus.mipi_csi2.lane_polarities[1] << 6);
>> +
>> +	/* Check the link frequency set in device tree */
>> +	if (!ep.nr_of_link_frequencies) {
>> +		dev_err(&client->dev, "link-frequency property not found in DT\n");
>> +		ret = -EINVAL;
>> +		goto done;
>> +	}
>> +	if (ep.nr_of_link_frequencies != 1) {
>> +		dev_err(&client->dev, "Multiple link frequencies not supported\n");
>> +		ret = -EINVAL;
>> +		goto done;
>> +	}
>> +	link_freq[0] = ep.link_frequencies[0];
>> +
>> +done:
>> +	v4l2_fwnode_endpoint_free(&ep);
>> +
>> +	return ret;
>> +}
>> +
>> +static int vd55g1_parse_dt_gpios_array(struct vd55g1 *sensor,
>> +				       char *prop_name, u32 *array, int *nb)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	struct device_node *np = client->dev.of_node;
>> +	unsigned int i;
>> +
>> +	*nb = of_property_read_variable_u32_array(np, prop_name, array, 0,
>> +						  VD55G1_NB_GPIOS);
> 
> You could use device_property_count_u32() and
> device_property_read_variable_u32_array() here instead.
> 
>> +	if (*nb == -EINVAL) {
>> +		/* Property not found */
>> +		*nb = 0;
>> +		return 0;
>> +	} else if (*nb < 0) {
>> +		dev_err(&client->dev, "Failed to read %s prop\n", prop_name);
>> +		return *nb;
>> +	}
>> +
>> +	for (i = 0; i < *nb;  i++) {
>> +		if (array[i] >= VD55G1_NB_GPIOS) {
>> +			dev_err(&client->dev, "Invalid GPIO number %d\n",
>> +				array[i]);
>> +			return -EINVAL;
>> +		}
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_parse_dt_gpios(struct vd55g1 *sensor)
>> +{
>> +	u32 led_gpios[VD55G1_NB_GPIOS];
>> +	int nb_gpios_leds;
>> +	unsigned int i;
>> +	int ret;
>> +
>> +	/* Initialize GPIOs to default */
>> +	for (i = 0; i < VD55G1_NB_GPIOS; i++)
>> +		sensor->gpios[i] = VD55G1_GPIO_MODE_IN;
>> +	sensor->ext_leds_mask = 0;
>> +
>> +	/* Take into account optional 'st,leds' output for GPIOs */
>> +	ret = vd55g1_parse_dt_gpios_array(sensor, "st,leds", led_gpios,
>> +					  &nb_gpios_leds);
>> +	if (ret)
>> +		return ret;
>> +
>> +	for (i = 0; i < nb_gpios_leds; i++) {
>> +		sensor->gpios[led_gpios[i]] = VD55G1_GPIO_MODE_STROBE;
>> +		set_bit(led_gpios[i], &sensor->ext_leds_mask);
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static int vd55g1_parse_dt(struct vd55g1 *sensor)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	struct device *dev = &client->dev;
>> +	struct fwnode_handle *endpoint;
>> +	int ret;
>> +
>> +	endpoint = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0);
>> +	if (!endpoint) {
>> +		dev_err(dev, "Endpoint node not found\n");
>> +		return -EINVAL;
>> +	}
>> +
>> +	ret = vd55g1_check_csi_conf(sensor, endpoint);
>> +	fwnode_handle_put(endpoint);
>> +	if (ret)
>> +		return ret;
>> +
>> +	return vd55g1_parse_dt_gpios(sensor);
>> +}
>> +
>> +static int vd55g1_subdev_init(struct vd55g1 *sensor)
>> +{
>> +	struct i2c_client *client = sensor->i2c_client;
>> +	int ret;
>> +
>> +	/* Init sub device */
>> +	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
>> +	sensor->sd.internal_ops = &vd55g1_internal_ops;
>> +
>> +	/* Init source pad */
>> +	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
>> +	sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
>> +	ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
>> +	if (ret) {
>> +		dev_err(&client->dev, "Failed to init media entity : %d", ret);
>> +		return ret;
>> +	}
>> +
>> +	sensor->sd.state_lock = sensor->ctrl_handler.lock;
>> +	ret = v4l2_subdev_init_finalize(&sensor->sd);
>> +	if (ret) {
>> +		dev_err(&client->dev, "Subdev init error: %d", ret);
>> +		goto err_ctrls;
>> +	}
>> +
>> +	/*
>> +	 * Initiliaze controls after v4l2_subdev_init_finalize() to make sure
>> +	 * default values are set.
>> +	 */
>> +	ret = vd55g1_init_ctrls(sensor);
>> +	if (ret) {
>> +		dev_err(&client->dev, "Controls initialization failed %d", ret);
>> +		goto err_media;
>> +	}
>> +
>> +	return ret;
>> +
>> +err_ctrls:
>> +	v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
>> +
>> +err_media:
>> +	media_entity_cleanup(&sensor->sd.entity);
>> +	return ret;
>> +}
>> +
>> +static void vd55g1_subdev_cleanup(struct vd55g1 *sensor)
>> +{
>> +	v4l2_async_unregister_subdev(&sensor->sd);
>> +	v4l2_subdev_cleanup(&sensor->sd);
>> +	media_entity_cleanup(&sensor->sd.entity);
>> +	v4l2_ctrl_handler_free(sensor->sd.ctrl_handler);
>> +}
>> +
>> +static int vd55g1_probe(struct i2c_client *client)
>> +{
>> +	struct device *dev = &client->dev;
>> +	struct vd55g1 *sensor;
>> +	int ret;
>> +
>> +	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
>> +	if (!sensor)
>> +		return -ENOMEM;
>> +
>> +	v4l2_i2c_subdev_init(&sensor->sd, client, &vd55g1_subdev_ops);
>> +	sensor->i2c_client = client;
>> +
>> +	ret = vd55g1_parse_dt(sensor);
>> +	if (ret)
>> +		return dev_err_probe(dev, ret, "Failed to parse Device Tree.");
>> +
>> +	/* Get (and check) resources : power regs, ext clock, reset gpio */
>> +	ret = vd55g1_get_regulators(sensor);
>> +	if (ret)
>> +		return dev_err_probe(dev, ret, "Failed to get regulators.");
>> +
>> +	sensor->xclk = devm_clk_get(dev, NULL);
>> +	if (IS_ERR(sensor->xclk))
>> +		return dev_err_probe(dev, PTR_ERR(sensor->xclk),
>> +				     "Failed to get xclk.");
>> +
>> +	sensor->xclk_freq = clk_get_rate(sensor->xclk);
>> +	ret = vd55g1_prepare_clock_tree(sensor);
>> +	if (ret)
>> +		return ret;
>> +
>> +	sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
>> +						     GPIOD_OUT_HIGH);
>> +	if (IS_ERR(sensor->reset_gpio))
>> +		return dev_err_probe(dev, PTR_ERR(sensor->reset_gpio),
>> +				     "Failed to get reset gpio.");
>> +
>> +	sensor->regmap = devm_cci_regmap_init_i2c(client, 16);
>> +	if (IS_ERR(sensor->regmap))
>> +		return dev_err_probe(dev, PTR_ERR(sensor->regmap),
>> +				     "Failed to init regmap.");
>> +
>> +	/* Detect if sensor is present and if its revision is supported */
>> +	ret = vd55g1_power_on(dev);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = vd55g1_subdev_init(sensor);
>> +	if (ret) {
>> +		dev_err(dev, "V4l2 init failed : %d", ret);
>> +		goto err_power_off;
>> +	}
>> +
>> +	ret = v4l2_async_register_subdev(&sensor->sd);
> 
> Note that by this time Runtime PM needs to have been enabled, for device
> access (and Runtime PM resume) may follow immediately.
> 
>> +	if (ret) {
>> +		dev_err(dev, "async subdev register failed %d", ret);
>> +		goto err_subdev;
>> +	}
>> +
>> +	/* Enable pm_runtime and power off the sensor */
>> +	pm_runtime_set_active(dev);
>> +	pm_runtime_get_noresume(dev);
>> +	pm_runtime_enable(dev);
>> +	pm_runtime_set_autosuspend_delay(dev, 4000);
>> +	pm_runtime_use_autosuspend(dev);
>> +	pm_runtime_mark_last_busy(dev);
>> +
>> +	return 0;
>> +
>> +err_subdev:
>> +	vd55g1_subdev_cleanup(sensor);
>> +err_power_off:
>> +	vd55g1_power_off(dev);
>> +
>> +	return ret;
>> +}
>> +
>> +static void vd55g1_remove(struct i2c_client *client)
>> +{
>> +	struct v4l2_subdev *sd = i2c_get_clientdata(client);
>> +	struct vd55g1 *sensor = to_vd55g1(sd);
>> +
>> +	vd55g1_subdev_cleanup(sensor);
>> +
>> +	pm_runtime_disable(&client->dev);
>> +	if (!pm_runtime_status_suspended(&client->dev))
>> +		vd55g1_power_off(&client->dev);
>> +	pm_runtime_set_suspended(&client->dev);
> 
> Add:
> 
> 	pm_runtime_dont_use_autosuspend(dev);
> 
>> +}
>> +
>> +static const struct of_device_id vd55g1_dt_ids[] = {
>> +	{ .compatible = "st,vd55g1" },
>> +	{ /* sentinel */ }
>> +};
>> +MODULE_DEVICE_TABLE(of, vd55g1_dt_ids);
>> +
>> +static const struct dev_pm_ops vd55g1_pm_ops = {
>> +	SET_RUNTIME_PM_OPS(vd55g1_power_off, vd55g1_power_on, NULL)
>> +};
>> +
>> +static struct i2c_driver vd55g1_i2c_driver = {
>> +	.driver = {
>> +		.name  = "vd55g1",
>> +		.of_match_table = vd55g1_dt_ids,
>> +		.pm = &vd55g1_pm_ops,
>> +	},
>> +	.probe = vd55g1_probe,
>> +	.remove = vd55g1_remove,
>> +};
>> +
>> +module_i2c_driver(vd55g1_i2c_driver);
>> +
>> +MODULE_AUTHOR("Benjamin Mugnier <benjamin.mugnier@foss.st.com>");
>> +MODULE_AUTHOR("Sylvain Petinot <sylvain.petinot@foss.st.com>");
>> +MODULE_DESCRIPTION("VD55G1 camera subdev driver");
>> +MODULE_LICENSE("GPL");
>>
>