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[v3,2/3] media: rockchip: Introduce driver for Rockhip's camera interface

Message ID 20200922165535.1356622-3-maxime.chevallier@bootlin.com
State New
Headers show
Series media: rockchip: Introduce driver for Rockchip's camera interface | expand

Commit Message

Maxime Chevallier Sept. 22, 2020, 4:55 p.m. UTC
Introduce a driver for the camera interface on some Rockchip platforms.

This controller supports CSI2 and BT656 interfaces, but for
now only the BT656 interface could be tested, hence it's the only one
that's supported in the first version of this driver.

This controller can be fond on PX30, RK1808, RK3128, RK3288 and RK3288,
but for now it's only be tested on PX30.

Most of this driver was written following the BSP driver from rockchip,
removing the parts that either didn't fit correctly the guidelines, or
that couldn't be tested.

In the BSP, this driver is known as the "cif" driver, but this was
renamed to "vip" to better fit the controller denomination in the
datasheet.

This basic version doesn't support cropping nor scaling, and is only
designed with one sensor being attached to it a any time.

This version uses the "pingpong" mode of the controller, which is a
double-buffering mechanism.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
V3:
 - renamed the driver
 - Took Hans, Robin and Ezequiel's reviews into account
 - Implemented the ouble-buffering mode

 drivers/media/platform/Kconfig                |   13 +
 drivers/media/platform/Makefile               |    1 +
 drivers/media/platform/rockchip/vip/Makefile  |    3 +
 drivers/media/platform/rockchip/vip/capture.c | 1246 +++++++++++++++++
 drivers/media/platform/rockchip/vip/dev.c     |  408 ++++++
 drivers/media/platform/rockchip/vip/dev.h     |  206 +++
 drivers/media/platform/rockchip/vip/regs.h    |  260 ++++
 7 files changed, 2137 insertions(+)
 create mode 100644 drivers/media/platform/rockchip/vip/Makefile
 create mode 100644 drivers/media/platform/rockchip/vip/capture.c
 create mode 100644 drivers/media/platform/rockchip/vip/dev.c
 create mode 100644 drivers/media/platform/rockchip/vip/dev.h
 create mode 100644 drivers/media/platform/rockchip/vip/regs.h

Comments

Ezequiel Garcia Oct. 2, 2020, 5:35 p.m. UTC | #1
Hi Maxime,

Thanks to Dafna, I found the patch ^_^

The driver looks real good. Just a few comments below.

Is the driver passing latest v4l2-compliance tests?

On Tue, 22 Sep 2020 at 13:55, Maxime Chevallier
<maxime.chevallier@bootlin.com> wrote:
>
> Introduce a driver for the camera interface on some Rockchip platforms.
>
> This controller supports CSI2 and BT656 interfaces, but for
> now only the BT656 interface could be tested, hence it's the only one
> that's supported in the first version of this driver.
>
> This controller can be fond on PX30, RK1808, RK3128, RK3288 and RK3288,
> but for now it's only be tested on PX30.
>
> Most of this driver was written following the BSP driver from rockchip,
> removing the parts that either didn't fit correctly the guidelines, or
> that couldn't be tested.
>
> In the BSP, this driver is known as the "cif" driver, but this was
> renamed to "vip" to better fit the controller denomination in the
> datasheet.
>
> This basic version doesn't support cropping nor scaling, and is only
> designed with one sensor being attached to it a any time.
>
> This version uses the "pingpong" mode of the controller, which is a
> double-buffering mechanism.
>
> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
> ---
> V3:
>  - renamed the driver
>  - Took Hans, Robin and Ezequiel's reviews into account
>  - Implemented the ouble-buffering mode
>
>  drivers/media/platform/Kconfig                |   13 +
>  drivers/media/platform/Makefile               |    1 +
>  drivers/media/platform/rockchip/vip/Makefile  |    3 +
>  drivers/media/platform/rockchip/vip/capture.c | 1246 +++++++++++++++++
>  drivers/media/platform/rockchip/vip/dev.c     |  408 ++++++
>  drivers/media/platform/rockchip/vip/dev.h     |  206 +++
>  drivers/media/platform/rockchip/vip/regs.h    |  260 ++++
>  7 files changed, 2137 insertions(+)
>  create mode 100644 drivers/media/platform/rockchip/vip/Makefile
>  create mode 100644 drivers/media/platform/rockchip/vip/capture.c
>  create mode 100644 drivers/media/platform/rockchip/vip/dev.c
>  create mode 100644 drivers/media/platform/rockchip/vip/dev.h
>  create mode 100644 drivers/media/platform/rockchip/vip/regs.h
>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index c57ee78fa99d..5bc67a0bdd69 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -461,6 +461,19 @@ config VIDEO_ROCKCHIP_RGA
>
>           To compile this driver as a module choose m here.
>
> +config VIDEO_ROCKCHIP_VIP
> +       tristate "Rockchip VIP (Video InPut) Camera Interface"
> +       depends on VIDEO_DEV && VIDEO_V4L2
> +       depends on ARCH_ROCKCHIP || COMPILE_TEST
> +       select VIDEOBUF2_DMA_SG
> +       select VIDEOBUF2_DMA_CONTIG
> +       select V4L2_FWNODE
> +       select V4L2_MEM2MEM_DEV
> +       help
> +         This is a v4l2 driver for Rockchip SOC Camera interface.
> +
> +         To compile this driver as a module choose m here.
> +

Please add ... "the module will be called {the name}".

>  config VIDEO_TI_VPE
>         tristate "TI VPE (Video Processing Engine) driver"
>         depends on VIDEO_DEV && VIDEO_V4L2
> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
> index 62b6cdc8c730..d056f5618c2b 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -53,6 +53,7 @@ obj-$(CONFIG_VIDEO_RENESAS_JPU)               += rcar_jpu.o
>  obj-$(CONFIG_VIDEO_RENESAS_VSP1)       += vsp1/
>
>  obj-$(CONFIG_VIDEO_ROCKCHIP_RGA)       += rockchip/rga/
> +obj-$(CONFIG_VIDEO_ROCKCHIP_VIP)       += rockchip/vip/
>
>  obj-y  += omap/
>
> diff --git a/drivers/media/platform/rockchip/vip/Makefile b/drivers/media/platform/rockchip/vip/Makefile
> new file mode 100644
> index 000000000000..c239ee0bb0fe
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/vip/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0
> +obj-$(CONFIG_VIDEO_ROCKCHIP_VIP) += video_rkvip.o
> +video_rkvip-objs += dev.o capture.o
> diff --git a/drivers/media/platform/rockchip/vip/capture.c b/drivers/media/platform/rockchip/vip/capture.c
> new file mode 100644
> index 000000000000..6f8e1184695c
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/vip/capture.c
> @@ -0,0 +1,1246 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip VIP Camera Interface Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/reset.h>
> +#include <media/v4l2-common.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fh.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/v4l2-mc.h>
> +#include <media/v4l2-subdev.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +#include "dev.h"
> +#include "regs.h"
> +
> +#define VIP_REQ_BUFS_MIN       1

I think you might want to have more than 1 buffer
as minimum. How about 3? Two for the ping and pong,
and one more in the queue.

> +#define VIP_MIN_WIDTH          64
> +#define VIP_MIN_HEIGHT         64
> +#define VIP_MAX_WIDTH          8192
> +#define VIP_MAX_HEIGHT         8192
> +
> +#define RK_VIP_PLANE_Y                 0
> +#define RK_VIP_PLANE_CBCR              1
> +
> +#define VIP_FETCH_Y_LAST_LINE(VAL) ((VAL) & 0x1fff)
> +/* Check if swap y and c in bt1120 mode */
> +#define VIP_FETCH_IS_Y_FIRST(VAL) ((VAL) & 0xf)
> +
> +/* Get xsubs and ysubs for fourcc formats
> + *
> + * @xsubs: horizontal color samples in a 4*4 matrix, for yuv
> + * @ysubs: vertical color samples in a 4*4 matrix, for yuv
> + */
> +static int fcc_xysubs(u32 fcc, u32 *xsubs, u32 *ysubs)

See below, you should be using v4l2_fill_pixfmt_mp.

> +{
> +       switch (fcc) {
> +       case V4L2_PIX_FMT_NV16:
> +       case V4L2_PIX_FMT_NV61:
> +               *xsubs = 2;
> +               *ysubs = 1;
> +               break;
> +       case V4L2_PIX_FMT_NV21:
> +       case V4L2_PIX_FMT_NV12:
> +               *xsubs = 2;
> +               *ysubs = 2;
> +               break;
> +       default:
> +               return -EINVAL;
> +       }
> +
> +       return 0;
> +}
> +
> +static const struct vip_output_fmt out_fmts[] = {
> +       {
> +               .fourcc = V4L2_PIX_FMT_NV16,
> +               .cplanes = 2,

From what I can see, you are only using this
information to calculate bytesperline and sizeimage,
so you should be using the v4l2_fill_pixfmt_mp() helper.

> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_422 |
> +                          VIP_FORMAT_UV_STORAGE_ORDER_UVUV,
> +               .bpp = { 8, 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_NV61,
> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_422 |
> +                          VIP_FORMAT_UV_STORAGE_ORDER_VUVU,
> +               .cplanes = 2,
> +               .bpp = { 8, 16 },
> +       },
> +       {
> +               .fourcc = V4L2_PIX_FMT_NV12,
> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_420 |
> +                          VIP_FORMAT_UV_STORAGE_ORDER_UVUV,
> +               .cplanes = 2,
> +               .bpp = { 8, 16 },
> +               .mbus = MEDIA_BUS_FMT_UYVY8_2X8,
> +       },
> +       {
> +               .fourcc = V4L2_PIX_FMT_NV21,
> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_420 |
> +                          VIP_FORMAT_UV_STORAGE_ORDER_VUVU,
> +               .cplanes = 2,
> +               .bpp = { 8, 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_RGB24,
> +               .cplanes = 1,
> +               .bpp = { 24 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_RGB565,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_BGR666,
> +               .cplanes = 1,
> +               .bpp = { 18 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SRGGB8,
> +               .cplanes = 1,
> +               .bpp = { 8 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SGRBG8,
> +               .cplanes = 1,
> +               .bpp = { 8 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SGBRG8,
> +               .cplanes = 1,
> +               .bpp = { 8 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SBGGR8,
> +               .cplanes = 1,
> +               .bpp = { 8 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SRGGB10,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SGRBG10,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SGBRG10,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SBGGR10,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SRGGB12,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SGRBG12,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SGBRG12,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SBGGR12,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_SBGGR16,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }, {
> +               .fourcc = V4L2_PIX_FMT_Y16,
> +               .cplanes = 1,
> +               .bpp = { 16 },
> +       }
> +};
> +
> +static const struct vip_input_fmt in_fmts[] = {
> +       {
> +               .mbus_code      = MEDIA_BUS_FMT_YUYV8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YUYV,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_YUYV8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YUYV,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_INTERLACED,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_YVYU8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YVYU,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_YVYU8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YVYU,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_INTERLACED,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_UYVY8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_UYVY,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_UYVY8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_UYVY,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_INTERLACED,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_VYUY8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_VYUY,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_VYUY8_2X8,
> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
> +                                 VIP_FORMAT_YUV_INPUT_ORDER_VYUY,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
> +               .fmt_type       = VIP_FMT_TYPE_YUV,
> +               .field          = V4L2_FIELD_INTERLACED,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SBGGR8_1X8,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SGBRG8_1X8,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SGRBG8_1X8,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SRGGB8_1X8,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SBGGR10_1X10,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SGBRG10_1X10,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SGRBG10_1X10,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SRGGB10_1X10,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SBGGR12_1X12,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SGBRG12_1X12,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SGRBG12_1X12,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_SRGGB12_1X12,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_RGB888_1X24,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RGB888,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_Y8_1X8,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_Y10_1X10,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }, {
> +               .mbus_code      = MEDIA_BUS_FMT_Y12_1X12,
> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
> +               .fmt_type       = VIP_FMT_TYPE_RAW,
> +               .field          = V4L2_FIELD_NONE,
> +       }
> +};
> +
> +static const struct
> +vip_input_fmt *get_input_fmt(struct v4l2_subdev *sd)
> +{
> +       struct v4l2_subdev_format fmt;
> +       int ret;
> +       u32 i;
> +
> +       fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> +       fmt.pad = 0;
> +       ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
> +       if (ret < 0) {
> +               v4l2_warn(sd->v4l2_dev,
> +                         "sensor fmt invalid, set to default size\n");
> +               goto set_default;
> +       }
> +
> +       for (i = 0; i < ARRAY_SIZE(in_fmts); i++)
> +               if (fmt.format.code == in_fmts[i].mbus_code &&
> +                   fmt.format.field == in_fmts[i].field)
> +                       return &in_fmts[i];
> +
> +       v4l2_err(sd->v4l2_dev, "remote sensor mbus code not supported\n");
> +
> +set_default:
> +       return NULL;
> +}
> +
> +static const struct
> +vip_output_fmt *find_output_fmt(struct rk_vip_stream *stream, u32 pixelfmt)
> +{
> +       const struct vip_output_fmt *fmt;
> +       u32 i;
> +
> +       for (i = 0; i < ARRAY_SIZE(out_fmts); i++) {
> +               fmt = &out_fmts[i];
> +               if (fmt->fourcc == pixelfmt)
> +                       return fmt;
> +       }
> +
> +       return NULL;
> +}
> +
> +static void rk_vip_setup_buffers(struct rk_vip_stream *stream)
> +{
> +       struct rk_vip_device *dev = stream->vipdev;
> +       void __iomem *base = dev->base_addr;
> +
> +       write_vip_reg(base, VIP_FRM0_ADDR_Y, stream->buffs[0]->buff_addr[RK_VIP_PLANE_Y]);
> +       write_vip_reg(base, VIP_FRM0_ADDR_UV, stream->buffs[0]->buff_addr[RK_VIP_PLANE_CBCR]);
> +
> +       write_vip_reg(base, VIP_FRM1_ADDR_Y, stream->buffs[1]->buff_addr[RK_VIP_PLANE_Y]);
> +       write_vip_reg(base, VIP_FRM1_ADDR_UV, stream->buffs[1]->buff_addr[RK_VIP_PLANE_CBCR]);
> +}
> +
> +static struct rk_vip_buffer *rk_vip_buffer_next(struct rk_vip_stream *stream)
> +{
> +       struct rk_vip_buffer *buff;
> +
> +       if (list_empty(&stream->buf_head))
> +               return NULL;
> +
> +       buff = list_first_entry(&stream->buf_head, struct rk_vip_buffer, queue);
> +       list_del(&buff->queue);
> +
> +       return buff;
> +}
> +
> +static void rk_vip_init_buffers(struct rk_vip_stream *stream)
> +{
> +       spin_lock(&stream->vbq_lock);
> +
> +       stream->buffs[0] = rk_vip_buffer_next(stream);
> +       stream->buffs[1] = rk_vip_buffer_next(stream);
> +
> +       spin_unlock(&stream->vbq_lock);
> +
> +       rk_vip_setup_buffers(stream);
> +}
> +
> +static void rk_vip_assign_new_buffer_pingpong(struct rk_vip_stream *stream)
> +{
> +       struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct rk_vip_buffer *buffer = NULL;
> +       void __iomem *base = dev->base_addr;
> +       u32 frm_addr_y, frm_addr_uv;
> +
> +       /* Set up an empty buffer for the next frame */
> +       spin_lock(&stream->vbq_lock);
> +
> +       buffer = rk_vip_buffer_next(stream);
> +       stream->buffs[stream->frame_phase] = buffer;
> +
> +       spin_unlock(&stream->vbq_lock);
> +
> +       frm_addr_y = stream->frame_phase ? VIP_FRM1_ADDR_Y : VIP_FRM0_ADDR_Y;
> +       frm_addr_uv = stream->frame_phase ? VIP_FRM1_ADDR_UV : VIP_FRM0_ADDR_UV;
> +
> +       if (buffer) {
> +               write_vip_reg(base, frm_addr_y,
> +                             buffer->buff_addr[RK_VIP_PLANE_Y]);
> +               write_vip_reg(base, frm_addr_uv,
> +                             buffer->buff_addr[RK_VIP_PLANE_CBCR]);
> +       } else {
> +               write_vip_reg(base, frm_addr_y, scratch_buf->dma_addr);
> +               write_vip_reg(base, frm_addr_uv, scratch_buf->dma_addr);
> +       }
> +}
> +
> +static void rk_vip_stream_stop(struct rk_vip_stream *stream)
> +{
> +       struct rk_vip_device *vip_dev = stream->vipdev;
> +       void __iomem *base = vip_dev->base_addr;
> +       u32 val;
> +
> +       val = read_vip_reg(base, VIP_CTRL);
> +       write_vip_reg(base, VIP_CTRL, val & (~VIP_CTRL_ENABLE_CAPTURE));
> +       write_vip_reg(base, VIP_INTEN, 0x0);
> +       write_vip_reg(base, VIP_INTSTAT, 0x3ff);
> +       write_vip_reg(base, VIP_FRAME_STATUS, 0x0);
> +
> +       stream->state = RK_VIP_STATE_READY;
> +}
> +
> +static int rk_vip_queue_setup(struct vb2_queue *queue,
> +                             unsigned int *num_buffers,
> +                             unsigned int *num_planes,
> +                             unsigned int sizes[],
> +                             struct device *alloc_devs[])
> +{
> +       struct rk_vip_stream *stream = queue->drv_priv;
> +       const struct v4l2_plane_pix_format *plane_fmt;
> +       const struct v4l2_pix_format_mplane *pixm;
> +       const struct vip_output_fmt *vip_fmt;
> +
> +       pixm = &stream->pixm;
> +       vip_fmt = stream->vip_fmt_out;
> +
> +       if (*num_planes) {
> +               if (*num_planes != 1)
> +                       return -EINVAL;
> +
> +               if (sizes[0] < pixm->plane_fmt[0].sizeimage)
> +                       return -EINVAL;
> +               return 0;
> +       }
> +
> +       *num_planes = 1;
> +
> +       plane_fmt = &pixm->plane_fmt[0];
> +       sizes[0] = plane_fmt->sizeimage;
> +
> +       *num_buffers = 5;
> +

Why not using VIP_REQ_BUFS_MIN here? (defined as 3)

> +       return 0;
> +}
> +
> +static void rk_vip_buf_queue(struct vb2_buffer *vb)
> +{
> +       struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> +       struct rk_vip_buffer *vipbuf = to_rk_vip_buffer(vbuf);
> +       struct vb2_queue *queue = vb->vb2_queue;
> +       struct rk_vip_stream *stream = queue->drv_priv;
> +       struct v4l2_pix_format_mplane *pixm = &stream->pixm;
> +       const struct vip_output_fmt *fmt = stream->vip_fmt_out;
> +       unsigned long lock_flags = 0;
> +       int i;
> +
> +       memset(vipbuf->buff_addr, 0, sizeof(vipbuf->buff_addr));
> +
> +       vipbuf->buff_addr[0] = vb2_dma_contig_plane_dma_addr(vb, 0);
> +
> +       for (i = 0; i < fmt->cplanes - 1; i++)
> +               vipbuf->buff_addr[i + 1] = vipbuf->buff_addr[i] +
> +                       pixm->plane_fmt[i].bytesperline * pixm->height;
> +
> +       spin_lock_irqsave(&stream->vbq_lock, lock_flags);
> +       list_add_tail(&vipbuf->queue, &stream->buf_head);
> +       spin_unlock_irqrestore(&stream->vbq_lock, lock_flags);
> +}
> +
> +static int rk_vip_create_scratch_buf(struct rk_vip_stream *stream)
> +{
> +       struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
> +       struct rk_vip_device *dev = stream->vipdev;
> +
> +       /* get a maximum plane size */
> +       scratch_buf->size = max(stream->pixm.plane_fmt[0].sizeimage,
> +                               stream->pixm.plane_fmt[1].sizeimage);
> +
> +       scratch_buf->vaddr = dma_alloc_coherent(dev->dev, scratch_buf->size,
> +                                               &scratch_buf->dma_addr,
> +                                               GFP_KERNEL);
> +       if (!scratch_buf->vaddr) {
> +               v4l2_err(&dev->v4l2_dev,
> +                        "Failed to allocate the memory for scratch buffer\n");
> +               return -ENOMEM;
> +       }
> +
> +       v4l2_info(&dev->v4l2_dev, "Allocate scratch buffer, size: 0x%08x\n",
> +                 scratch_buf->size);
> +

I would silence this message. The scratch buffers are just regular buffers,
why printing this on each start of streaming (well, why printing this at all) ?

> +       return 0;
> +}
> +
> +static void rk_vip_destroy_scratch_buf(struct rk_vip_stream *stream)
> +{
> +       struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
> +       struct rk_vip_device *dev = stream->vipdev;
> +
> +       dma_free_coherent(dev->dev, scratch_buf->size,
> +                         scratch_buf->vaddr, scratch_buf->dma_addr);
> +}
> +
> +static void rk_vip_stop_streaming(struct vb2_queue *queue)
> +{
> +       struct rk_vip_stream *stream = queue->drv_priv;
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct rk_vip_buffer *buf;
> +       struct v4l2_subdev *sd;
> +       int ret;
> +
> +       stream->stopping = true;
> +       ret = wait_event_timeout(stream->wq_stopped,
> +                                stream->state != RK_VIP_STATE_STREAMING,
> +                                msecs_to_jiffies(1000));
> +       if (!ret) {
> +               rk_vip_stream_stop(stream);
> +               stream->stopping = false;
> +       }
> +       pm_runtime_put(dev->dev);
> +
> +       /* stop the sub device*/
> +       sd = dev->sensor.sd;
> +       v4l2_subdev_call(sd, video, s_stream, 0);
> +       v4l2_subdev_call(sd, core, s_power, 0);
> +
> +       /* release buffers */
> +       if (stream->buffs[0]) {
> +               list_add_tail(&stream->buffs[0]->queue, &stream->buf_head);
> +               stream->buffs[0] = NULL;
> +       }
> +       if (stream->buffs[1]) {
> +               list_add_tail(&stream->buffs[1]->queue, &stream->buf_head);
> +               stream->buffs[1] = NULL;
> +       }
> +
> +       while (!list_empty(&stream->buf_head)) {
> +               buf = rk_vip_buffer_next(stream);
> +               vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
> +       }
> +
> +       rk_vip_destroy_scratch_buf(stream);
> +}
> +
> +static u32 rk_vip_determine_input_mode(struct rk_vip_device *dev)
> +{
> +       struct rk_vip_sensor_info *sensor_info = &dev->sensor;
> +       struct rk_vip_stream *stream = &dev->stream;
> +       v4l2_std_id std;
> +       u32 mode = VIP_FORMAT_INPUT_MODE_YUV;
> +       int ret;
> +
> +       ret = v4l2_subdev_call(sensor_info->sd, video, querystd, &std);
> +       if (ret == 0) {
> +               /* retrieve std from sensor if exist */
> +               switch (std) {
> +               case 0:
> +                       break;
> +               case V4L2_STD_NTSC:
> +                       mode = VIP_FORMAT_INPUT_MODE_NTSC;
> +                       break;
> +               case V4L2_STD_PAL:
> +                       mode = VIP_FORMAT_INPUT_MODE_PAL;
> +                       break;
> +               case V4L2_STD_ATSC:
> +                       mode = VIP_FORMAT_INPUT_MODE_BT1120;
> +                       break;
> +               default:
> +                       v4l2_err(&dev->v4l2_dev,
> +                                "std: %lld is not supported", std);
> +               }
> +       } else {
> +               /* determine input mode by mbus_code (fmt_type) */
> +               switch (stream->vip_fmt_in->fmt_type) {
> +               case VIP_FMT_TYPE_YUV:
> +                       mode = VIP_FORMAT_INPUT_MODE_YUV;
> +                       break;
> +               case VIP_FMT_TYPE_RAW:
> +                       mode = VIP_FORMAT_INPUT_MODE_RAW;
> +                       break;
> +               }
> +       }
> +
> +       return mode;
> +}
> +
> +static inline u32 rk_vip_scl_ctl(struct rk_vip_stream *stream)
> +{
> +       u32 fmt_type = stream->vip_fmt_in->fmt_type;
> +
> +       return (fmt_type == VIP_FMT_TYPE_YUV) ?
> +               VIP_SCL_CTRL_ENABLE_YUV_16BIT_BYPASS :
> +               VIP_SCL_CTRL_ENABLE_RAW_16BIT_BYPASS;
> +}
> +
> +static int rk_vip_stream_start(struct rk_vip_stream *stream)
> +{
> +       u32 val, mbus_flags, href_pol, vsync_pol,
> +           xfer_mode = 0, yc_swap = 0, skip_top = 0;
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct rk_vip_sensor_info *sensor_info;
> +       void __iomem *base = dev->base_addr;
> +
> +       sensor_info = &dev->sensor;
> +       stream->frame_idx = 0;
> +
> +       mbus_flags = sensor_info->mbus.flags;
> +       href_pol = (mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) ?
> +                       VIP_FORMAT_HSY_HIGH_ACTIVE : VIP_FORMAT_HSY_LOW_ACTIVE;
> +       vsync_pol = (mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) ?
> +                       VIP_FORMAT_VSY_HIGH_ACTIVE : VIP_FORMAT_VSY_LOW_ACTIVE;
> +
> +       if (rk_vip_determine_input_mode(dev) == VIP_FORMAT_INPUT_MODE_BT1120) {
> +               if (stream->vip_fmt_in->field == V4L2_FIELD_NONE)
> +                       xfer_mode = VIP_FORMAT_BT1120_TRANSMIT_PROGRESS;
> +               else
> +                       xfer_mode = VIP_FORMAT_BT1120_TRANSMIT_INTERFACE;
> +
> +               if (!VIP_FETCH_IS_Y_FIRST(stream->vip_fmt_in->dvp_fmt_val))
> +                       yc_swap = VIP_FORMAT_BT1120_YC_SWAP;
> +       }
> +
> +       val = vsync_pol | href_pol | rk_vip_determine_input_mode(dev) |
> +             stream->vip_fmt_out->fmt_val | stream->vip_fmt_in->dvp_fmt_val |
> +             xfer_mode | yc_swap;
> +       write_vip_reg(base, VIP_FOR, val);
> +       val = stream->pixm.width;
> +       if (stream->vip_fmt_in->fmt_type == VIP_FMT_TYPE_RAW)
> +               val = stream->pixm.width * 2;
> +       write_vip_reg(base, VIP_VIR_LINE_WIDTH, val);
> +       write_vip_reg(base, VIP_SET_SIZE,
> +                     stream->pixm.width | (stream->pixm.height << 16));
> +
> +       v4l2_subdev_call(sensor_info->sd, sensor, g_skip_top_lines, &skip_top);
> +
> +       write_vip_reg(base, VIP_CROP, skip_top << VIP_CROP_Y_SHIFT);
> +       write_vip_reg(base, VIP_FRAME_STATUS, VIP_FRAME_STAT_CLS);
> +       write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_CLS);
> +       write_vip_reg(base, VIP_SCL_CTRL, rk_vip_scl_ctl(stream));
> +
> +       rk_vip_init_buffers(stream);
> +
> +       write_vip_reg(base, VIP_INTEN, VIP_INTEN_FRAME_END_EN |
> +                                      VIP_INTEN_LINE_ERR_EN |
> +                                      VIP_INTEN_PST_INF_FRAME_END_EN);
> +
> +       write_vip_reg(base, VIP_CTRL, VIP_CTRL_AXI_BURST_16 |
> +                                     VIP_CTRL_MODE_PINGPONG |
> +                                     VIP_CTRL_ENABLE_CAPTURE);
> +
> +       stream->state = RK_VIP_STATE_STREAMING;
> +
> +       return 0;
> +}
> +
> +static int rk_vip_start_streaming(struct vb2_queue *queue, unsigned int count)
> +{
> +       struct rk_vip_stream *stream = queue->drv_priv;
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
> +       struct v4l2_subdev *sd;
> +       int ret;
> +
> +       if (WARN_ON(stream->state != RK_VIP_STATE_READY)) {
> +               ret = -EBUSY;
> +               v4l2_err(v4l2_dev, "stream in busy state\n");
> +               goto destroy_buf;
> +       }
> +
> +       stream->vip_fmt_in = get_input_fmt(dev->sensor.sd);
> +
> +       ret = rk_vip_create_scratch_buf(stream);
> +       if (ret < 0) {
> +               v4l2_err(v4l2_dev, "Failed to create scratch_buf, %d\n", ret);
> +               goto destroy_buf;
> +       }
> +
> +       ret = pm_runtime_get_sync(dev->dev);
> +       if (ret < 0) {
> +               v4l2_err(v4l2_dev, "Failed to get runtime pm, %d\n", ret);
> +               goto destroy_scratch_buf;
> +       }
> +
> +       /* start sub-devices */
> +       sd = dev->sensor.sd;
> +       ret = v4l2_subdev_call(sd, core, s_power, 1);
> +       if (ret < 0 && ret != -ENOIOCTLCMD)
> +               goto runtime_put;
> +       ret = v4l2_subdev_call(sd, video, s_stream, 1);
> +       if (ret < 0)
> +               goto subdev_poweroff;
> +
> +       ret = rk_vip_stream_start(stream);
> +       if (ret < 0)
> +               goto stop_stream;
> +
> +       return 0;
> +
> +stop_stream:
> +       rk_vip_stream_stop(stream);
> +subdev_poweroff:
> +       v4l2_subdev_call(sd, core, s_power, 0);
> +runtime_put:
> +       pm_runtime_put(dev->dev);
> +destroy_scratch_buf:
> +       rk_vip_destroy_scratch_buf(stream);
> +destroy_buf:
> +       while (!list_empty(&stream->buf_head)) {
> +               struct rk_vip_buffer *buf;
> +
> +               buf = rk_vip_buffer_next(stream);
> +               vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
> +       }
> +
> +       return ret;
> +}
> +
> +static struct vb2_ops rk_vip_vb2_ops = {
> +       .queue_setup = rk_vip_queue_setup,
> +       .buf_queue = rk_vip_buf_queue,
> +       .wait_prepare = vb2_ops_wait_prepare,
> +       .wait_finish = vb2_ops_wait_finish,
> +       .stop_streaming = rk_vip_stop_streaming,
> +       .start_streaming = rk_vip_start_streaming,
> +};
> +
> +static int rk_vip_init_vb2_queue(struct vb2_queue *q,
> +                                struct rk_vip_stream *stream,
> +                                enum v4l2_buf_type buf_type)
> +{
> +       q->type = buf_type;

Looks this is only called with one buf_type, so why not hardcoding it here?

> +       q->io_modes = VB2_MMAP | VB2_DMABUF;
> +       q->drv_priv = stream;
> +       q->ops = &rk_vip_vb2_ops;
> +       q->mem_ops = &vb2_dma_contig_memops;
> +       q->buf_struct_size = sizeof(struct rk_vip_buffer);
> +       q->min_buffers_needed = VIP_REQ_BUFS_MIN;
> +       q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> +       q->lock = &stream->vlock;
> +       q->dev = stream->vipdev->dev;
> +
> +       return vb2_queue_init(q);
> +}
> +
> +static void rk_vip_set_fmt(struct rk_vip_stream *stream,
> +                          struct v4l2_pix_format_mplane *pixm,
> +                          bool try)
> +{
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct v4l2_subdev_format sd_fmt;
> +       const struct vip_output_fmt *fmt;
> +       struct v4l2_rect input_rect;
> +       unsigned int planes, imagesize = 0;
> +       u32 xsubs = 1, ysubs = 1;
> +       int i;
> +

I was expecting to see some is_busy or is_streaming check
here, have you tested what happens if you change the format
while streaming, or after buffers are queued?

> +       fmt = find_output_fmt(stream, pixm->pixelformat);
> +       if (!fmt)
> +               fmt = &out_fmts[0];
> +
> +       if (!try) {
> +               sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> +               sd_fmt.pad = 0;
> +               sd_fmt.format.width = pixm->width;
> +               sd_fmt.format.height = pixm->height;
> +               v4l2_subdev_call(dev->sensor.sd, pad, set_fmt, NULL, &sd_fmt);
> +
> +               pixm->width = sd_fmt.format.width;
> +               pixm->height = sd_fmt.format.height;
> +       }
> +
> +       input_rect.width = VIP_MAX_WIDTH;
> +       input_rect.height = VIP_MAX_HEIGHT;
> +
> +       pixm->width = clamp_t(u32, pixm->width,
> +                             VIP_MIN_WIDTH, input_rect.width);
> +       pixm->height = clamp_t(u32, pixm->height,
> +                              VIP_MIN_HEIGHT, input_rect.height);
> +
> +       pixm->num_planes = 1;
> +       pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
> +       pixm->colorspace = V4L2_COLORSPACE_SRGB;
> +
> +       pixm->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pixm->colorspace);
> +       pixm->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pixm->colorspace);
> +
> +       pixm->pixelformat = fmt->fourcc;
> +       pixm->field = V4L2_FIELD_NONE;
> +
> +       /* calculate plane size and image size */
> +       fcc_xysubs(fmt->fourcc, &xsubs, &ysubs);
> +
> +       planes = fmt->cplanes ? fmt->cplanes : 1;
> +
> +       for (i = 0; i < planes; i++) {
> +               struct v4l2_plane_pix_format *plane_fmt;
> +               int width, height, bpl, size;
> +
> +               if (i == 0) {
> +                       width = pixm->width;
> +                       height = pixm->height;
> +               } else {
> +                       width = pixm->width / xsubs;
> +                       height = pixm->height / ysubs;
> +               }
> +
> +               bpl = width * fmt->bpp[i] / 8;
> +               size = bpl * height;
> +               imagesize += size;
> +
> +               if (i == 0) {
> +                       /* Set bpl and size for each mplane */
> +                       plane_fmt = pixm->plane_fmt;
> +                       plane_fmt->bytesperline = bpl;
> +                       plane_fmt->sizeimage = size;
> +               }
> +       }
> +
> +       pixm->plane_fmt[0].sizeimage = imagesize;
> +
> +       if (!try) {
> +               stream->vip_fmt_out = fmt;
> +               stream->pixm = *pixm;
> +       }
> +}
> +
> +void rk_vip_stream_init(struct rk_vip_device *dev)
> +{
> +       struct rk_vip_stream *stream = &dev->stream;
> +       struct v4l2_pix_format_mplane pixm;
> +
> +       memset(stream, 0, sizeof(*stream));
> +       memset(&pixm, 0, sizeof(pixm));
> +       stream->vipdev = dev;
> +
> +       INIT_LIST_HEAD(&stream->buf_head);
> +       spin_lock_init(&stream->vbq_lock);
> +       stream->state = RK_VIP_STATE_READY;
> +       init_waitqueue_head(&stream->wq_stopped);
> +
> +       /* Set default format */
> +       pixm.pixelformat = V4L2_PIX_FMT_NV12;
> +       pixm.width = RK_VIP_DEFAULT_WIDTH;
> +       pixm.height = RK_VIP_DEFAULT_HEIGHT;
> +       rk_vip_set_fmt(stream, &pixm, false);
> +
> +       stream->crop.left = 0;
> +       stream->crop.top = 0;
> +       stream->crop.width = 10;
> +       stream->crop.height = 10;
> +}
> +
> +static const struct v4l2_file_operations rk_vip_fops = {
> +       .open = v4l2_fh_open,
> +       .release = vb2_fop_release,
> +       .unlocked_ioctl = video_ioctl2,
> +       .poll = vb2_fop_poll,
> +       .mmap = vb2_fop_mmap,
> +};
> +
> +static int rk_vip_enum_input(struct file *file, void *priv,
> +                            struct v4l2_input *input)
> +{
> +       if (input->index > 0)
> +               return -EINVAL;
> +
> +       input->type = V4L2_INPUT_TYPE_CAMERA;
> +       strlcpy(input->name, "Camera", sizeof(input->name));
> +
> +       return 0;
> +}
> +
> +static int rk_vip_try_fmt_vid_cap_mplane(struct file *file, void *fh,
> +                                        struct v4l2_format *f)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +
> +       rk_vip_set_fmt(stream, &f->fmt.pix_mp, true);
> +
> +       return 0;
> +}
> +
> +static int rk_vip_enum_fmt_vid_cap(struct file *file, void *priv,
> +                                  struct v4l2_fmtdesc *f)
> +{
> +       const struct vip_output_fmt *fmt = NULL;
> +
> +       if (f->index >= ARRAY_SIZE(out_fmts))
> +               return -EINVAL;
> +
> +       fmt = &out_fmts[f->index];
> +       f->pixelformat = fmt->fourcc;
> +
> +       return 0;
> +}
> +
> +static int rk_vip_s_fmt_vid_cap_mplane(struct file *file,
> +                                      void *priv, struct v4l2_format *f)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +
> +       rk_vip_set_fmt(stream, &f->fmt.pix_mp, false);
> +
> +       return 0;
> +}
> +
> +static int rk_vip_g_fmt_vid_cap_mplane(struct file *file, void *fh,
> +                                      struct v4l2_format *f)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +
> +       f->fmt.pix_mp = stream->pixm;
> +
> +       return 0;
> +}
> +
> +static int rk_vip_querycap(struct file *file, void *priv,
> +                          struct v4l2_capability *cap)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +       struct device *dev = stream->vipdev->dev;
> +
> +       strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
> +       strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
> +       snprintf(cap->bus_info, sizeof(cap->bus_info),
> +                "platform:%s", dev_name(dev));
> +
> +       return 0;
> +}
> +
> +static int rk_vip_enum_framesizes(struct file *file, void *fh,
> +                                 struct v4l2_frmsizeenum *fsize)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct v4l2_subdev_frame_size_enum fse = {
> +               .index = fsize->index,
> +               .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> +       };
> +       const struct vip_output_fmt *fmt;
> +       int ret;
> +
> +       if (!dev->sensor.sd)
> +               return -EINVAL;
> +
> +       fmt = find_output_fmt(stream, fsize->pixel_format);
> +       if (!fmt)
> +               return -EINVAL;
> +
> +       fse.code = fmt->mbus;
> +
> +       ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_size,
> +                              NULL, &fse);
> +       if (ret)
> +               return ret;
> +
> +       fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
> +       fsize->discrete.width = fse.max_width;
> +       fsize->discrete.height = fse.max_height;
> +
> +       return 0;
> +}
> +
> +static int rk_vip_enum_frameintervals(struct file *file, void *fh,
> +                                     struct v4l2_frmivalenum *fival)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +       struct rk_vip_device *dev = stream->vipdev;
> +       struct v4l2_subdev_frame_interval_enum fie = {
> +               .index = fival->index,
> +               .width = fival->width,
> +               .height = fival->height,
> +               .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> +       };
> +       const struct vip_output_fmt *fmt;
> +       int ret;
> +
> +       if (!dev->sensor.sd)
> +               return -EINVAL;
> +
> +       fmt = find_output_fmt(stream, fival->pixel_format);
> +       if (!fmt)
> +               return -EINVAL;
> +
> +       fie.code = fmt->mbus;
> +
> +       ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_interval,
> +                              NULL, &fie);
> +       if (ret)
> +               return ret;
> +
> +       fival->type = V4L2_FRMSIZE_TYPE_DISCRETE;
> +       fival->discrete = fie.interval;
> +
> +       return 0;
> +}
> +
> +static int rk_vip_g_input(struct file *file, void *fh, unsigned int *i)
> +{
> +       *i = 0;
> +       return 0;
> +}
> +
> +static int rk_vip_s_input(struct file *file, void *fh, unsigned int i)
> +{

Only one input, why do you need to support this ioctl at all?

> +       if (i)
> +               return -EINVAL;
> +
> +       return 0;
> +}
> +
> +static int rk_vip_g_parm(struct file *file, void *priv,
> +                        struct v4l2_streamparm *p)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +       struct rk_vip_device *dev = stream->vipdev;
> +
> +       return v4l2_g_parm_cap(video_devdata(file), dev->sensor.sd, p);
> +}
> +
> +static int rk_vip_s_parm(struct file *file, void *priv,
> +                        struct v4l2_streamparm *p)
> +{
> +       struct rk_vip_stream *stream = video_drvdata(file);
> +       struct rk_vip_device *dev = stream->vipdev;
> +
> +       return v4l2_s_parm_cap(video_devdata(file), dev->sensor.sd, p);
> +}
> +
> +static const struct v4l2_ioctl_ops rk_vip_v4l2_ioctl_ops = {
> +       .vidioc_reqbufs = vb2_ioctl_reqbufs,
> +       .vidioc_querybuf = vb2_ioctl_querybuf,
> +       .vidioc_create_bufs = vb2_ioctl_create_bufs,
> +       .vidioc_qbuf = vb2_ioctl_qbuf,
> +       .vidioc_expbuf = vb2_ioctl_expbuf,
> +       .vidioc_dqbuf = vb2_ioctl_dqbuf,
> +       .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
> +       .vidioc_streamon = vb2_ioctl_streamon,
> +       .vidioc_streamoff = vb2_ioctl_streamoff,
> +
> +       .vidioc_enum_fmt_vid_cap = rk_vip_enum_fmt_vid_cap,
> +       .vidioc_try_fmt_vid_cap_mplane = rk_vip_try_fmt_vid_cap_mplane,
> +       .vidioc_s_fmt_vid_cap_mplane = rk_vip_s_fmt_vid_cap_mplane,
> +       .vidioc_g_fmt_vid_cap_mplane = rk_vip_g_fmt_vid_cap_mplane,
> +       .vidioc_querycap = rk_vip_querycap,
> +       .vidioc_enum_framesizes = rk_vip_enum_framesizes,
> +       .vidioc_enum_frameintervals = rk_vip_enum_frameintervals,
> +
> +       .vidioc_enum_input = rk_vip_enum_input,
> +       .vidioc_g_input = rk_vip_g_input,
> +       .vidioc_s_input = rk_vip_s_input,
> +
> +       .vidioc_g_parm = rk_vip_g_parm,
> +       .vidioc_s_parm = rk_vip_s_parm,
> +};
> +
> +void rk_vip_unregister_stream_vdev(struct rk_vip_device *dev)
 > +{
> +       struct rk_vip_stream *stream = &dev->stream;
> +
> +       media_entity_cleanup(&stream->vdev.entity);
> +       video_unregister_device(&stream->vdev);
> +}
> +
> +int rk_vip_register_stream_vdev(struct rk_vip_device *dev)
> +{
> +       struct rk_vip_stream *stream = &dev->stream;
> +       struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
> +       struct video_device *vdev = &stream->vdev;
> +       int ret;
> +
> +       strlcpy(vdev->name, VIP_VIDEODEVICE_NAME, sizeof(vdev->name));
> +       mutex_init(&stream->vlock);
> +
> +       vdev->ioctl_ops = &rk_vip_v4l2_ioctl_ops;
> +       vdev->release = video_device_release_empty;
> +       vdev->fops = &rk_vip_fops;
> +       vdev->minor = -1;
> +       vdev->v4l2_dev = v4l2_dev;
> +       vdev->lock = &stream->vlock;
> +       vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
> +                           V4L2_CAP_STREAMING;
> +       video_set_drvdata(vdev, stream);
> +       vdev->vfl_dir = VFL_DIR_RX;
> +       stream->pad.flags = MEDIA_PAD_FL_SINK;
> +
> +       rk_vip_init_vb2_queue(&stream->buf_queue, stream,
> +                             V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE |
> +                             V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +       vdev->queue = &stream->buf_queue;
> +       strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
> +
> +       ret = video_register_device(vdev, VFL_TYPE_SUBDEV, -1);
> +       if (ret < 0) {
> +               v4l2_err(v4l2_dev,
> +                        "video_register_device failed with error %d\n", ret);
> +               return ret;
> +       }
> +
> +       ret = media_entity_pads_init(&vdev->entity, 1, &stream->pad);
> +       if (ret < 0)
> +               goto unreg;
> +
> +       return 0;
> +unreg:
> +       video_unregister_device(vdev);
> +       return ret;
> +}
> +
> +static void rk_vip_vb_done(struct rk_vip_stream *stream,
> +                          struct vb2_v4l2_buffer *vb_done)
> +{
> +       vb2_set_plane_payload(&vb_done->vb2_buf, 0,
> +                             stream->pixm.plane_fmt[0].sizeimage);
> +       vb_done->vb2_buf.timestamp = ktime_get_ns();

vb_done->vb2_buf.sequence = stream->frame_idx; ?

> +       vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE);
> +}
> +
> +static void rk_vip_reset_stream(struct rk_vip_device *vip_dev)
> +{
> +       void __iomem *base = vip_dev->base_addr;
> +       u32 ctl = read_vip_reg(base, VIP_CTRL);
> +
> +       write_vip_reg(base, VIP_CTRL, ctl & (~VIP_CTRL_ENABLE_CAPTURE));
> +       write_vip_reg(base, VIP_CTRL, ctl | VIP_CTRL_ENABLE_CAPTURE);
> +}
> +
> +void rk_vip_irq_pingpong(struct rk_vip_device *vip_dev)
> +{
> +       struct rk_vip_stream *stream = &vip_dev->stream;
> +       void __iomem *base = vip_dev->base_addr;
> +       unsigned int intstat;
> +
> +       u32 lastline, lastpix, ctl, vip_frmst;
> +
> +       intstat = read_vip_reg(base, VIP_INTSTAT);
> +       vip_frmst = read_vip_reg(base, VIP_FRAME_STATUS);
> +       lastline = VIP_FETCH_Y_LAST_LINE(read_vip_reg(base, VIP_LAST_LINE));
> +       lastpix = read_vip_reg(base, VIP_LAST_PIX);
> +       ctl = read_vip_reg(base, VIP_CTRL);
> +
> +       /* There are two irqs enabled:
> +        *  - PST_INF_FRAME_END: vip FIFO is ready,
> +        *    this is prior to FRAME_END
> +        *  - FRAME_END: vip has saved frame to memory,
> +        *    a frame ready
> +        */
> +
> +       if ((intstat & VIP_INTSTAT_PST_INF_FRAME_END)) {
> +               write_vip_reg(base, VIP_INTSTAT,
> +                             VIP_INTSTAT_PST_INF_FRAME_END_CLR);
> +
> +               if (stream->stopping)
> +                       /* To stop VIP ASAP, before FRAME_END irq */
> +                       write_vip_reg(base, VIP_CTRL,
> +                                     ctl & (~VIP_CTRL_ENABLE_CAPTURE));
> +       }
> +
> +       if ((intstat & VIP_INTSTAT_PRE_INF_FRAME_END))
> +               write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_PRE_INF_FRAME_END);
> +
> +       if (intstat & (VIP_INTSTAT_LINE_ERR | VIP_INTSTAT_PIX_ERR)) {
> +               write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_LINE_ERR |
> +                                                VIP_INTSTAT_PIX_ERR);
> +               rk_vip_reset_stream(vip_dev);
> +       }
> +
> +       if ((intstat & VIP_INTSTAT_FRAME_END)) {
> +               struct vb2_v4l2_buffer *vb_done = NULL;
> +
> +               write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_FRAME_END_CLR |
> +                                                VIP_INTSTAT_LINE_END_CLR);
> +
> +               if (stream->stopping) {
> +                       rk_vip_stream_stop(stream);
> +                       stream->stopping = false;
> +                       wake_up(&stream->wq_stopped);
> +                       return;
> +               }
> +
> +               if (lastline != stream->pixm.height) {
> +                       v4l2_err(&vip_dev->v4l2_dev,
> +                                "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
> +                                intstat, vip_frmst, lastline, lastpix);
> +
> +                       rk_vip_reset_stream(vip_dev);
> +               }
> +
> +               if (vip_frmst & VIP_INTSTAT_F0_READY)
> +                       stream->frame_phase = 0;
> +               else if (vip_frmst & VIP_INTSTAT_F1_READY)
> +                       stream->frame_phase = 1;
> +               else
> +                       return;
> +
> +               if (stream->buffs[stream->frame_phase])
> +                       vb_done = &stream->buffs[stream->frame_phase]->vb;
> +
> +               rk_vip_assign_new_buffer_pingpong(stream);
> +
> +               if (vb_done)
> +                       rk_vip_vb_done(stream, vb_done);
> +
> +               stream->frame_idx++;

This counter seems unused, but maybe it should be used
for the capture buffer sequence, as mentioned above.

> +       }
> +}
> diff --git a/drivers/media/platform/rockchip/vip/dev.c b/drivers/media/platform/rockchip/vip/dev.c
> new file mode 100644
> index 000000000000..d9b64f088c37
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/vip/dev.c
> @@ -0,0 +1,408 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Rockchip VIP Camera Interface Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/interrupt.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_graph.h>
> +#include <linux/of_platform.h>
> +#include <linux/of_reserved_mem.h>
> +#include <linux/reset.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/pinctrl/consumer.h>
> +#include <media/v4l2-fwnode.h>
> +
> +#include "dev.h"
> +#include "regs.h"
> +
> +#define RK_VIP_VERNO_LEN               10
> +
> +struct vip_match_data {
> +       int chip_id;
> +       const char * const *clks;
> +       const char * const *rsts;
> +       int clks_num;
> +       int rsts_num;
> +};
> +
> +static int rk_vip_create_links(struct rk_vip_device *dev)
> +{
> +       struct v4l2_subdev *sd = dev->sensor.sd;
> +       int ret;
> +
> +       ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode,
> +                                         MEDIA_PAD_FL_SOURCE);
> +       if (ret)
> +               return ret;
> +
> +       ret = media_create_pad_link(&sd->entity, 0,
> +                                   &dev->stream.vdev.entity, 0,
> +                                   MEDIA_LNK_FL_ENABLED);
> +       if (ret) {
> +               dev_err(dev->dev, "failed to create link");
> +               return ret;
> +       }
> +
> +       return 0;
> +}
> +
> +static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
> +{
> +       struct rk_vip_device *dev;
> +       int ret;
> +
> +       dev = container_of(notifier, struct rk_vip_device, notifier);
> +
> +       mutex_lock(&dev->media_dev.graph_mutex);
> +
> +       ret = rk_vip_create_links(dev);
> +       if (ret < 0)
> +               goto unlock;
> +
> +       ret = v4l2_device_register_subdev_nodes(&dev->v4l2_dev);
> +       if (ret < 0)
> +               goto unlock;
> +
> +unlock:
> +       mutex_unlock(&dev->media_dev.graph_mutex);
> +       return ret;
> +}
> +
> +static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
> +                                struct v4l2_subdev *subdev,
> +                                struct v4l2_async_subdev *asd)
> +{
> +       struct rk_vip_device *vip_dev = container_of(notifier,
> +                                       struct rk_vip_device, notifier);
> +
> +       int pad;
> +
> +       vip_dev->sensor.sd = subdev;
> +       pad = media_entity_get_fwnode_pad(&subdev->entity, subdev->fwnode,
> +                                         MEDIA_PAD_FL_SOURCE);
> +       if (pad < 0)
> +               return pad;
> +
> +       vip_dev->sensor.pad = pad;
> +
> +       return 0;
> +}
> +
> +static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
> +       .bound = subdev_notifier_bound,
> +       .complete = subdev_notifier_complete,
> +};
> +
> +static int vip_subdev_notifier(struct rk_vip_device *vip_dev)
> +{
> +       struct v4l2_async_notifier *ntf = &vip_dev->notifier;
> +       struct device *dev = vip_dev->dev;
> +       struct v4l2_fwnode_endpoint vep = {
> +               .bus_type = V4L2_MBUS_PARALLEL,
> +       };
> +       struct fwnode_handle *ep;
> +       int ret;
> +
> +       v4l2_async_notifier_init(ntf);
> +
> +       ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0,
> +                       FWNODE_GRAPH_ENDPOINT_NEXT);
> +       if (!ep)
> +               return -EINVAL;
> +
> +       ret = v4l2_fwnode_endpoint_parse(ep, &vep);
> +       if (ret)
> +               return ret;
> +
> +       ret = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
> +                                                          &vip_dev->asd);
> +       if (ret)
> +               return ret;
> +
> +       ntf->ops = &subdev_notifier_ops;
> +
> +       fwnode_handle_put(ep);
> +
> +       ret = v4l2_async_notifier_register(&vip_dev->v4l2_dev, ntf);
> +       return ret;
> +}
> +
> +static int rk_vip_register_platform_subdevs(struct rk_vip_device *vip_dev)
> +{
> +       int ret;
> +
> +       ret = rk_vip_register_stream_vdev(vip_dev);
> +       if (ret < 0)
> +               return ret;
> +
> +       ret = vip_subdev_notifier(vip_dev);
> +       if (ret < 0) {
> +               v4l2_err(&vip_dev->v4l2_dev,
> +                        "Failed to register subdev notifier(%d)\n", ret);
> +               rk_vip_unregister_stream_vdev(vip_dev);
> +       }
> +
> +       return 0;
> +}
> +
> +static const char * const px30_vip_clks[] = {
> +       "aclk_vip",
> +       "hclk_vip",
> +       "pclk_vip",
> +       "vip_out",

These clock names don't seem to match with the devicetree.
I wonder how have you been testing this, to be honest ^_^  ?

Isn't probe failing with mismatching clock names?

> +};
> +
> +static const char * const px30_vip_rsts[] = {
> +       "rst_vip_a",
> +       "rst_vip_h",
> +       "rst_vip_pclkin",
> +};
> +
> +static const struct vip_match_data px30_vip_match_data = {
> +       .chip_id = CHIP_PX30_VIP,
> +       .clks = px30_vip_clks,
> +       .clks_num = ARRAY_SIZE(px30_vip_clks),
> +       .rsts = px30_vip_rsts,
> +       .rsts_num = ARRAY_SIZE(px30_vip_rsts),
> +};
> +
> +static const struct of_device_id rk_vip_plat_of_match[] = {
> +       {
> +               .compatible = "rockchip,px30-vip",
> +               .data = &px30_vip_match_data,
> +       },
> +       {},
> +};
> +
> +static irqreturn_t rk_vip_irq_handler(int irq, void *ctx)
> +{
> +       struct device *dev = ctx;
> +       struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
> +
> +       rk_vip_irq_pingpong(vip_dev);
> +

Why not just making rk_vip_irq_pingpong the interrupt handler?

> +       return IRQ_HANDLED;
> +}
> +
> +static void rk_vip_disable_sys_clk(struct rk_vip_device *vip_dev)
> +{
> +       int i;
> +
> +       for (i = vip_dev->clk_size - 1; i >= 0; i--)
> +               clk_disable_unprepare(vip_dev->clks[i]);

Please use clk_bulk_disable_unprepare.
> +}
> +
> +static int rk_vip_enable_sys_clk(struct rk_vip_device *vip_dev)
> +{
> +       int i, ret = -EINVAL;
> +
> +       for (i = 0; i < vip_dev->clk_size; i++) {
> +               ret = clk_prepare_enable(vip_dev->clks[i]);
> +

Please use clk_bulk_prepare_enable.

> +               if (ret < 0)
> +                       goto err;
> +       }
> +
> +       return 0;
> +
> +err:
> +       for (--i; i >= 0; --i)
> +               clk_disable_unprepare(vip_dev->clks[i]);
> +
> +       return ret;
> +}
> +
> +void rk_vip_soft_reset(struct rk_vip_device *vip_dev)
> +{
> +       unsigned int i;
> +
> +       for (i = 0; i < ARRAY_SIZE(vip_dev->vip_rst); i++)
> +               if (vip_dev->vip_rst[i])
> +                       reset_control_assert(vip_dev->vip_rst[i]);
> +       udelay(5);
> +       for (i = 0; i < ARRAY_SIZE(vip_dev->vip_rst); i++)
> +               if (vip_dev->vip_rst[i])
> +                       reset_control_deassert(vip_dev->vip_rst[i]);
> +}
> +
> +static int rk_vip_plat_probe(struct platform_device *pdev)
> +{
> +       const struct of_device_id *match;
> +       struct device_node *node = pdev->dev.of_node;
> +       struct device *dev = &pdev->dev;
> +       struct v4l2_device *v4l2_dev;
> +       struct rk_vip_device *vip_dev;
> +       const struct vip_match_data *data;
> +       struct resource *res;
> +       int i, ret, irq;
> +
> +       match = of_match_node(rk_vip_plat_of_match, node);
> +       if (IS_ERR(match))
> +               return PTR_ERR(match);
> +
> +       vip_dev = devm_kzalloc(dev, sizeof(*vip_dev), GFP_KERNEL);
> +       if (!vip_dev)
> +               return -ENOMEM;
> +
> +       dev_set_drvdata(dev, vip_dev);
> +       vip_dev->dev = dev;
> +
> +       irq = platform_get_irq(pdev, 0);
> +       if (irq < 0)
> +               return irq;
> +
> +       ret = devm_request_irq(dev, irq, rk_vip_irq_handler, IRQF_SHARED,
> +                              dev_driver_string(dev), dev);
> +       if (ret < 0) {
> +               dev_err(dev, "request irq failed: %d\n", ret);
> +               return ret;
> +       }
> +
> +       vip_dev->irq = irq;
> +       data = match->data;
> +       vip_dev->chip_id = data->chip_id;
> +
> +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +       vip_dev->base_addr = devm_ioremap_resource(dev, res);
> +
> +       if (IS_ERR(vip_dev->base_addr))
> +               return PTR_ERR(vip_dev->base_addr);
> +
> +       if (data->clks_num > RK_VIP_MAX_BUS_CLK ||
> +               data->rsts_num > RK_VIP_MAX_RESET) {
> +               dev_err(dev, "out of range: clks(%d %d) rsts(%d %d)\n",
> +                       data->clks_num, RK_VIP_MAX_BUS_CLK,
> +                       data->rsts_num, RK_VIP_MAX_RESET);
> +               return -EINVAL;
> +       }
> +
> +       for (i = 0; i < data->clks_num; i++) {
> +               struct clk *clk = devm_clk_get(dev, data->clks[i]);
> +
> +               if (IS_ERR(clk)) {
> +                       dev_err(dev, "failed to get %s\n", data->clks[i]);
> +                       return PTR_ERR(clk);
> +               }
> +
> +               vip_dev->clks[i] = clk;
> +       }
> +
> +       vip_dev->clk_size = data->clks_num;
> +
> +       for (i = 0; i < data->rsts_num; i++) {
> +               struct reset_control *rst =
> +                       devm_reset_control_get(dev, data->rsts[i]);
> +               if (IS_ERR(rst)) {
> +                       dev_err(dev, "failed to get %s\n", data->rsts[i]);
> +                       return PTR_ERR(rst);
> +               }
> +               vip_dev->vip_rst[i] = rst;
> +       }
> +
> +       /* Initialize the stream */
> +       rk_vip_stream_init(vip_dev);
> +
> +       strlcpy(vip_dev->media_dev.model, "rk_vip",
> +               sizeof(vip_dev->media_dev.model));
> +       vip_dev->media_dev.dev = &pdev->dev;
> +       v4l2_dev = &vip_dev->v4l2_dev;
> +       v4l2_dev->mdev = &vip_dev->media_dev;
> +       strlcpy(v4l2_dev->name, "rk_vip", sizeof(v4l2_dev->name));
> +       v4l2_ctrl_handler_init(&vip_dev->ctrl_handler, 8);
> +       v4l2_dev->ctrl_handler = &vip_dev->ctrl_handler;
> +
> +       ret = v4l2_device_register(vip_dev->dev, &vip_dev->v4l2_dev);
> +       if (ret < 0)
> +               return ret;
> +
> +       media_device_init(&vip_dev->media_dev);
> +
> +       ret = media_device_register(&vip_dev->media_dev);
> +       if (ret < 0) {
> +               v4l2_err(v4l2_dev, "Failed to register media device: %d\n",
> +                        ret);
> +               goto err_unreg_v4l2_dev;
> +       }
> +
> +       /* create & register platefom subdev (from of_node) */
> +       ret = rk_vip_register_platform_subdevs(vip_dev);
> +       if (ret < 0)
> +               goto err_unreg_media_dev;
> +
> +       ret = of_reserved_mem_device_init(dev);
> +       if (ret)
> +               v4l2_warn(v4l2_dev, "No reserved memory region assign to VIP\n");
> +

How about

        ret = of_reserved_mem_device_init(dev);
        if (ret && ret != -ENODEV)
                return ret;

instead?

Also, it seems you are missing a of_reserved_mem_device_release
on the error paths and plat_remove.

Thanks,
Ezequiel

> +       pm_runtime_enable(&pdev->dev);
> +
> +       return 0;
> +
> +err_unreg_media_dev:
> +       media_device_unregister(&vip_dev->media_dev);
> +err_unreg_v4l2_dev:
> +       v4l2_device_unregister(&vip_dev->v4l2_dev);
> +       return ret;
> +}
> +
> +static int rk_vip_plat_remove(struct platform_device *pdev)
> +{
> +       struct rk_vip_device *vip_dev = platform_get_drvdata(pdev);
> +
> +       pm_runtime_disable(&pdev->dev);
> +
> +       media_device_unregister(&vip_dev->media_dev);
> +       v4l2_device_unregister(&vip_dev->v4l2_dev);
> +       rk_vip_unregister_stream_vdev(vip_dev);
> +
> +       return 0;
> +}
> +
> +static int __maybe_unused rk_vip_runtime_suspend(struct device *dev)
> +{
> +       struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
> +
> +       rk_vip_disable_sys_clk(vip_dev);
> +
> +       return pinctrl_pm_select_sleep_state(dev);
> +}
> +
> +static int __maybe_unused rk_vip_runtime_resume(struct device *dev)
> +{
> +       struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
> +       int ret;
> +
> +       ret = pinctrl_pm_select_default_state(dev);
> +       if (ret < 0)
> +               return ret;
> +       rk_vip_enable_sys_clk(vip_dev);
> +
> +       return 0;
> +}
> +
> +static const struct dev_pm_ops rk_vip_plat_pm_ops = {
> +       SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> +                               pm_runtime_force_resume)
> +       SET_RUNTIME_PM_OPS(rk_vip_runtime_suspend, rk_vip_runtime_resume, NULL)
> +};
> +
> +static struct platform_driver rk_vip_plat_drv = {
> +       .driver = {
> +                  .name = VIP_DRIVER_NAME,
> +                  .of_match_table = of_match_ptr(rk_vip_plat_of_match),
> +                  .pm = &rk_vip_plat_pm_ops,
> +       },
> +       .probe = rk_vip_plat_probe,
> +       .remove = rk_vip_plat_remove,
> +};
> +
> +module_platform_driver(rk_vip_plat_drv);
> +MODULE_AUTHOR("Rockchip Camera/ISP team");
> +MODULE_DESCRIPTION("Rockchip VIP platform driver");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/media/platform/rockchip/vip/dev.h b/drivers/media/platform/rockchip/vip/dev.h
> new file mode 100644
> index 000000000000..8d803885459d
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/vip/dev.h
> @@ -0,0 +1,206 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Rockchip VIP Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + */
> +
> +#ifndef _RK_VIP_DEV_H
> +#define _RK_VIP_DEV_H
> +
> +#include <linux/mutex.h>
> +#include <media/media-device.h>
> +#include <media/media-entity.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/videobuf2-v4l2.h>
> +
> +#define VIP_DRIVER_NAME                "rk_vip"
> +#define VIP_VIDEODEVICE_NAME   "stream_vip"
> +
> +#define RK_VIP_MAX_BUS_CLK     8
> +#define RK_VIP_MAX_SENSOR      2
> +#define RK_VIP_MAX_RESET               5
> +#define RK_VIP_MAX_CSI_CHANNEL 4
> +
> +#define RK_VIP_DEFAULT_WIDTH   640
> +#define RK_VIP_DEFAULT_HEIGHT  480
> +
> +#define write_vip_reg(base, addr, val)  writel(val, (addr) + (base))
> +#define read_vip_reg(base, addr) readl((addr) + (base))
> +
> +#define write_csihost_reg(base, addr, val)  writel(val, (addr) + (base))
> +#define read_csihost_reg(base, addr) readl((addr) + (base))
> +
> +enum rk_vip_state {
> +       RK_VIP_STATE_DISABLED,
> +       RK_VIP_STATE_READY,
> +       RK_VIP_STATE_STREAMING
> +};
> +
> +enum rk_vip_chip_id {
> +       CHIP_PX30_VIP,
> +       CHIP_RK1808_VIP,
> +       CHIP_RK3128_VIP,
> +       CHIP_RK3288_VIP
> +};
> +
> +enum host_type_t {
> +       RK_CSI_RXHOST,
> +       RK_DSI_RXHOST
> +};
> +
> +struct rk_vip_buffer {
> +       struct vb2_v4l2_buffer vb;
> +       struct list_head queue;
> +       union {
> +               u32 buff_addr[VIDEO_MAX_PLANES];
> +               void *vaddr[VIDEO_MAX_PLANES];
> +       };
> +};
> +
> +struct rk_vip_scratch_buffer {
> +       void *vaddr;
> +       dma_addr_t dma_addr;
> +       u32 size;
> +};
> +
> +extern int rk_vip_debug;
> +
> +static inline struct rk_vip_buffer *to_rk_vip_buffer(struct vb2_v4l2_buffer *vb)
> +{
> +       return container_of(vb, struct rk_vip_buffer, vb);
> +}
> +
> +/*
> + * struct rk_vip_sensor_info - Sensor infomations
> + * @mbus: media bus configuration
> + */
> +struct rk_vip_sensor_info {
> +       struct v4l2_subdev *sd;
> +       int pad;
> +       struct v4l2_mbus_config mbus;
> +       int lanes;
> +};
> +
> +/*
> + * struct vip_output_fmt - The output format
> + *
> + * @fourcc: pixel format in fourcc
> + * @cplanes: number of colour planes
> + * @fmt_val: the fmt val corresponding to VIP_FOR register
> + * @bpp: bits per pixel for each cplanes
> + */
> +struct vip_output_fmt {
> +       u32 fourcc;
> +       u32 mbus;
> +       u8 cplanes;
> +       u32 fmt_val;
> +       u8 bpp[VIDEO_MAX_PLANES];
> +};
> +
> +enum vip_fmt_type {
> +       VIP_FMT_TYPE_YUV = 0,
> +       VIP_FMT_TYPE_RAW,
> +};
> +
> +/*
> + * struct vip_input_fmt - The input mbus format from sensor
> + *
> + * @mbus_code: mbus format
> + * @dvp_fmt_val: the fmt val corresponding to VIP_FOR register
> + * @csi_fmt_val: the fmt val corresponding to VIP_CSI_ID_CTRL
> + * @field: the field type of the input from sensor
> + */
> +struct vip_input_fmt {
> +       u32 mbus_code;
> +       u32 dvp_fmt_val;
> +       u32 csi_fmt_val;
> +       enum vip_fmt_type fmt_type;
> +       enum v4l2_field field;
> +};
> +
> +/*
> + * struct rk_vip_stream - Stream states TODO
> + *
> + * @vbq_lock: lock to protect buf_queue
> + * @buf_queue: queued buffer list
> + * @scratch_buf: scratch space to store dropped data
> + *
> + * rk_vip use shadowsock registers, so it need two buffer at a time
> + * @curr_buf: the buffer used for current frame
> + * @next_buf: the buffer used for next frame
> + */
> +struct rk_vip_stream {
> +       struct rk_vip_device            *vipdev;
> +       enum rk_vip_state               state;
> +       bool                            stopping;
> +       wait_queue_head_t               wq_stopped;
> +       int                             frame_idx;
> +       int                             frame_phase;
> +
> +       /* lock between irq and buf_queue */
> +       spinlock_t                      vbq_lock;
> +       struct vb2_queue                buf_queue;
> +       struct list_head                buf_head;
> +       struct rk_vip_scratch_buffer    scratch_buf;
> +       struct rk_vip_buffer            *buffs[2];
> +
> +       /* vfd lock */
> +       struct mutex                    vlock;
> +       struct video_device             vdev;
> +       /* TODO: pad for dvp and mipi separately? */
> +       struct media_pad                pad;
> +
> +       const struct vip_output_fmt     *vip_fmt_out;
> +       const struct vip_input_fmt      *vip_fmt_in;
> +       struct v4l2_pix_format_mplane   pixm;
> +       struct v4l2_rect                crop;
> +       int                             crop_enable;
> +};
> +
> +static inline struct rk_vip_stream *to_rk_vip_stream(struct video_device *vdev)
> +{
> +       return container_of(vdev, struct rk_vip_stream, vdev);
> +}
> +
> +/*
> + * struct rk_vip_device - ISP platform device
> + * @base_addr: base register address
> + * @active_sensor: sensor in-use, set when streaming on
> + * @stream: capture video device
> + */
> +struct rk_vip_device {
> +       struct list_head                list;
> +       struct device                   *dev;
> +       int                             irq;
> +       void __iomem                    *base_addr;
> +       void __iomem                    *csi_base;
> +       struct clk                      *clks[RK_VIP_MAX_BUS_CLK];
> +       int                             clk_size;
> +       struct vb2_alloc_ctx            *alloc_ctx;
> +       bool                            iommu_en;
> +       struct iommu_domain             *domain;
> +       struct reset_control            *vip_rst[RK_VIP_MAX_RESET];
> +
> +       struct v4l2_device              v4l2_dev;
> +       struct media_device             media_dev;
> +       struct v4l2_ctrl_handler        ctrl_handler;
> +       struct v4l2_async_notifier      notifier;
> +       struct v4l2_async_subdev        asd;
> +       struct rk_vip_sensor_info       sensor;
> +
> +       struct rk_vip_stream            stream;
> +
> +       int                             chip_id;
> +};
> +
> +void rk_vip_unregister_stream_vdev(struct rk_vip_device *dev);
> +int rk_vip_register_stream_vdev(struct rk_vip_device *dev);
> +void rk_vip_stream_init(struct rk_vip_device *dev);
> +
> +void rk_vip_irq_oneframe(struct rk_vip_device *vip_dev);
> +void rk_vip_irq_pingpong(struct rk_vip_device *vip_dev);
> +void rk_vip_soft_reset(struct rk_vip_device *vip_dev);
> +
> +#endif
> diff --git a/drivers/media/platform/rockchip/vip/regs.h b/drivers/media/platform/rockchip/vip/regs.h
> new file mode 100644
> index 000000000000..cfe287ce5bf6
> --- /dev/null
> +++ b/drivers/media/platform/rockchip/vip/regs.h
> @@ -0,0 +1,260 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Rockchip VIP Driver
> + *
> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
> + */
> +
> +#ifndef _RK_VIP_REGS_H
> +#define _RK_VIP_REGS_H
> +
> +/* VIP Reg Offset */
> +#define VIP_CTRL                       0x00
> +#define VIP_INTEN                      0x04
> +#define VIP_INTSTAT                    0x08
> +#define VIP_FOR                                0x0c
> +#define VIP_LINE_NUM_ADDR              0x10
> +#define VIP_FRM0_ADDR_Y                        0x14
> +#define VIP_FRM0_ADDR_UV               0x18
> +#define VIP_FRM1_ADDR_Y                        0x1c
> +#define VIP_FRM1_ADDR_UV               0x20
> +#define VIP_VIR_LINE_WIDTH             0x24
> +#define VIP_SET_SIZE                   0x28
> +#define VIP_SCM_ADDR_Y                 0x2c
> +#define VIP_SCM_ADDR_U                 0x30
> +#define VIP_SCM_ADDR_V                 0x34
> +#define VIP_WB_UP_FILTER               0x38
> +#define VIP_WB_LOW_FILTER              0x3c
> +#define VIP_WBC_CNT                    0x40
> +#define VIP_CROP                       0x44
> +#define VIP_SCL_CTRL                   0x48
> +#define VIP_SCL_DST                    0x4c
> +#define VIP_SCL_FCT                    0x50
> +#define VIP_SCL_VALID_NUM              0x54
> +#define VIP_LINE_LOOP_CTR              0x58
> +#define VIP_FRAME_STATUS               0x60
> +#define VIP_CUR_DST                    0x64
> +#define VIP_LAST_LINE                  0x68
> +#define VIP_LAST_PIX                   0x6c
> +
> +/* RK1808 VIP CSI Registers Offset */
> +#define VIP_CSI_ID0_CTRL0              0x80
> +#define VIP_CSI_ID0_CTRL1              0x84
> +#define VIP_CSI_ID1_CTRL0              0x88
> +#define VIP_CSI_ID1_CTRL1              0x8c
> +#define VIP_CSI_ID2_CTRL0              0x90
> +#define VIP_CSI_ID2_CTRL1              0x94
> +#define VIP_CSI_ID3_CTRL0              0x98
> +#define VIP_CSI_ID3_CTRL1              0x9c
> +#define VIP_CSI_WATER_LINE             0xa0
> +#define VIP_CSI_FRM0_ADDR_Y_ID0                0xa4
> +#define VIP_CSI_FRM1_ADDR_Y_ID0                0xa8
> +#define VIP_CSI_FRM0_ADDR_UV_ID0       0xac
> +#define VIP_CSI_FRM1_ADDR_UV_ID0       0xb0
> +#define VIP_CSI_FRM0_VLW_Y_ID0         0xb4
> +#define VIP_CSI_FRM1_VLW_Y_ID0         0xb8
> +#define VIP_CSI_FRM0_VLW_UV_ID0                0xbc
> +#define VIP_CSI_FRM1_VLW_UV_ID0                0xc0
> +#define VIP_CSI_FRM0_ADDR_Y_ID1                0xc4
> +#define VIP_CSI_FRM1_ADDR_Y_ID1                0xc8
> +#define VIP_CSI_FRM0_ADDR_UV_ID1       0xcc
> +#define VIP_CSI_FRM1_ADDR_UV_ID1       0xd0
> +#define VIP_CSI_FRM0_VLW_Y_ID1         0xd4
> +#define VIP_CSI_FRM1_VLW_Y_ID1         0xd8
> +#define VIP_CSI_FRM0_VLW_UV_ID1                0xdc
> +#define VIP_CSI_FRM1_VLW_UV_ID1                0xe0
> +#define VIP_CSI_FRM0_ADDR_Y_ID2                0xe4
> +#define VIP_CSI_FRM1_ADDR_Y_ID2                0xe8
> +#define VIP_CSI_FRM0_ADDR_UV_ID2       0xec
> +#define VIP_CSI_FRM1_ADDR_UV_ID2       0xf0
> +#define VIP_CSI_FRM0_VLW_Y_ID2         0xf4
> +#define VIP_CSI_FRM1_VLW_Y_ID2         0xf8
> +#define VIP_CSI_FRM0_VLW_UV_ID2                0xfc
> +#define VIP_CSI_FRM1_VLW_UV_ID2                0x100
> +#define VIP_CSI_FRM0_ADDR_Y_ID3                0x104
> +#define VIP_CSI_FRM1_ADDR_Y_ID3                0x108
> +#define VIP_CSI_FRM0_ADDR_UV_ID3       0x10c
> +#define VIP_CSI_FRM1_ADDR_UV_ID3       0x110
> +#define VIP_CSI_FRM0_VLW_Y_ID3         0x114
> +#define VIP_CSI_FRM1_VLW_Y_ID3         0x118
> +#define VIP_CSI_FRM0_VLW_UV_ID3                0x11c
> +#define VIP_CSI_FRM1_VLW_UV_ID3                0x120
> +#define VIP_CSI_INTEN                  0x124
> +#define VIP_CSI_INTSTAT                        0x128
> +#define VIP_CSI_LINE_INT_NUM_ID0_1     0x12c
> +#define VIP_CSI_LINE_INT_NUM_ID2_3     0x130
> +#define VIP_CSI_LINE_CNT_ID0_1         0x134
> +#define VIP_CSI_LINE_CNT_ID2_3         0x138
> +#define VIP_CSI_ID0_CROP_START         0x13c
> +#define VIP_CSI_ID1_CROP_START         0x140
> +#define VIP_CSI_ID2_CROP_START         0x144
> +#define VIP_CSI_ID3_CROP_START         0x148
> +
> +/* The key register bit description */
> +
> +/* VIP_CTRL Reg */
> +#define VIP_CTRL_DISABLE_CAPTURE                       (0x0 << 0)
> +#define VIP_CTRL_ENABLE_CAPTURE                        (0x1 << 0)
> +#define VIP_CTRL_MODE_ONEFRAME                 (0x0 << 1)
> +#define VIP_CTRL_MODE_PINGPONG                 (0x1 << 1)
> +#define VIP_CTRL_MODE_LINELOOP                 (0x2 << 1)
> +#define VIP_CTRL_AXI_BURST_16                  (0xF << 12)
> +
> +/* VIP_INTEN */
> +#define VIP_INTEN_DISABLE                      (0x0 << 0)
> +#define VIP_INTEN_FRAME_END_EN                 (0x1 << 0)
> +#define VIP_INTEN_LINE_ERR_EN                  (0x1 << 2)
> +#define VIP_INTEN_BUS_ERR_EN                   (0x1 << 6)
> +#define VIP_INTEN_SCL_ERR_EN                   (0x1 << 7)
> +#define VIP_INTEN_PST_INF_FRAME_END_EN         (0x1 << 9)
> +
> +/* VIP INTSTAT */
> +#define VIP_INTSTAT_CLS                        (0x3FF)
> +#define VIP_INTSTAT_FRAME_END                  (0x01 << 0)
> +#define VIP_INTSTAT_LINE_END                   (0x01 << 1)
> +#define VIP_INTSTAT_LINE_ERR                   (0x01 << 2)
> +#define VIP_INTSTAT_PIX_ERR                    (0x01 << 3)
> +#define VIP_INTSTAT_PRE_INF_FRAME_END          (0x01 << 8)
> +#define VIP_INTSTAT_PST_INF_FRAME_END          (0x01 << 9)
> +#define VIP_INTSTAT_FRAME_END_CLR                      (0x01 << 0)
> +#define VIP_INTSTAT_LINE_END_CLR                       (0x01 << 1)
> +#define VIP_INTSTAT_LINE_ERR_CLR                       (0x01 << 2)
> +#define VIP_INTSTAT_PST_INF_FRAME_END_CLR              (0x01 << 9)
> +#define VIP_INTSTAT_ERR                        (0xFC)
> +
> +/* VIP_FRAME STATUS */
> +#define VIP_FRAME_STAT_CLS                     0x00
> +#define VIP_FRAME_FRM0_STAT_CLS                        0x20    /* write 0 to clear frame 0 */
> +
> +/* VIP_FORMAT */
> +#define VIP_FORMAT_VSY_HIGH_ACTIVE                     (0x01 << 0)
> +#define VIP_FORMAT_VSY_LOW_ACTIVE                      (0x00 << 0)
> +#define VIP_FORMAT_HSY_LOW_ACTIVE                      (0x01 << 1)
> +#define VIP_FORMAT_HSY_HIGH_ACTIVE                     (0x00 << 1)
> +#define VIP_FORMAT_INPUT_MODE_YUV                      (0x00 << 2)
> +#define VIP_FORMAT_INPUT_MODE_PAL                      (0x02 << 2)
> +#define VIP_FORMAT_INPUT_MODE_NTSC                     (0x03 << 2)
> +#define VIP_FORMAT_INPUT_MODE_BT1120           (0x07 << 2)
> +#define VIP_FORMAT_INPUT_MODE_RAW                      (0x04 << 2)
> +#define VIP_FORMAT_INPUT_MODE_JPEG                     (0x05 << 2)
> +#define VIP_FORMAT_INPUT_MODE_MIPI                     (0x06 << 2)
> +#define VIP_FORMAT_YUV_INPUT_ORDER_UYVY                (0x00 << 5)
> +#define VIP_FORMAT_YUV_INPUT_ORDER_YVYU                (0x01 << 5)
> +#define VIP_FORMAT_YUV_INPUT_ORDER_VYUY                (0x10 << 5)
> +#define VIP_FORMAT_YUV_INPUT_ORDER_YUYV                (0x03 << 5)
> +#define VIP_FORMAT_YUV_INPUT_422                       (0x00 << 7)
> +#define VIP_FORMAT_YUV_INPUT_420                       (0x01 << 7)
> +#define VIP_FORMAT_INPUT_420_ORDER_EVEN                (0x00 << 8)
> +#define VIP_FORMAT_INPUT_420_ORDER_ODD         (0x01 << 8)
> +#define VIP_FORMAT_CCIR_INPUT_ORDER_ODD                (0x00 << 9)
> +#define VIP_FORMAT_CCIR_INPUT_ORDER_EVEN               (0x01 << 9)
> +#define VIP_FORMAT_RAW_DATA_WIDTH_8            (0x00 << 11)
> +#define VIP_FORMAT_RAW_DATA_WIDTH_10           (0x01 << 11)
> +#define VIP_FORMAT_RAW_DATA_WIDTH_12           (0x02 << 11)
> +#define VIP_FORMAT_YUV_OUTPUT_422                      (0x00 << 16)
> +#define VIP_FORMAT_YUV_OUTPUT_420                      (0x01 << 16)
> +#define VIP_FORMAT_OUTPUT_420_ORDER_EVEN               (0x00 << 17)
> +#define VIP_FORMAT_OUTPUT_420_ORDER_ODD                (0x01 << 17)
> +#define VIP_FORMAT_RAWD_DATA_LITTLE_ENDIAN             (0x00 << 18)
> +#define VIP_FORMAT_RAWD_DATA_BIG_ENDIAN                (0x01 << 18)
> +#define VIP_FORMAT_UV_STORAGE_ORDER_UVUV               (0x00 << 19)
> +#define VIP_FORMAT_UV_STORAGE_ORDER_VUVU               (0x01 << 19)
> +#define VIP_FORMAT_BT1120_CLOCK_SINGLE_EDGES   (0x00 << 24)
> +#define VIP_FORMAT_BT1120_CLOCK_DOUBLE_EDGES   (0x01 << 24)
> +#define VIP_FORMAT_BT1120_TRANSMIT_INTERFACE   (0x00 << 25)
> +#define VIP_FORMAT_BT1120_TRANSMIT_PROGRESS    (0x01 << 25)
> +#define VIP_FORMAT_BT1120_YC_SWAP                      (0x01 << 26)
> +
> +/* VIP_SCL_CTRL */
> +#define VIP_SCL_CTRL_ENABLE_SCL_DOWN                   (0x01 << 0)
> +#define VIP_SCL_CTRL_DISABLE_SCL_DOWN          (0x00 << 0)
> +#define VIP_SCL_CTRL_ENABLE_SCL_UP                     (0x01 << 1)
> +#define VIP_SCL_CTRL_DISABLE_SCL_UP                    (0x00 << 1)
> +#define VIP_SCL_CTRL_ENABLE_YUV_16BIT_BYPASS           (0x01 << 4)
> +#define VIP_SCL_CTRL_DISABLE_YUV_16BIT_BYPASS  (0x00 << 4)
> +#define VIP_SCL_CTRL_ENABLE_RAW_16BIT_BYPASS           (0x01 << 5)
> +#define VIP_SCL_CTRL_DISABLE_RAW_16BIT_BYPASS  (0x00 << 5)
> +#define VIP_SCL_CTRL_ENABLE_32BIT_BYPASS               (0x01 << 6)
> +#define VIP_SCL_CTRL_DISABLE_32BIT_BYPASS              (0x00 << 6)
> +
> +/* VIP_INTSTAT */
> +#define VIP_INTSTAT_F0_READY                   (0x01 << 0)
> +#define VIP_INTSTAT_F1_READY                   (0x01 << 1)
> +
> +/* VIP_CROP */
> +#define VIP_CROP_Y_SHIFT               16
> +#define VIP_CROP_X_SHIFT               0
> +
> +/* VIP_CSI_ID_CTRL0 */
> +#define VIP_CSI_DISABLE_CAPTURE                (0x0 << 0)
> +#define VIP_CSI_ENABLE_CAPTURE         (0x1 << 0)
> +#define VIP_CSI_WRDDR_TYPE_RAW8                (0x0 << 1)
> +#define VIP_CSI_WRDDR_TYPE_RAW10               (0x1 << 1)
> +#define VIP_CSI_WRDDR_TYPE_RAW12               (0x2 << 1)
> +#define VIP_CSI_WRDDR_TYPE_RGB888              (0x3 << 1)
> +#define VIP_CSI_WRDDR_TYPE_YUV422              (0x4 << 1)
> +#define VIP_CSI_DISABLE_COMMAND_MODE   (0x0 << 4)
> +#define VIP_CSI_ENABLE_COMMAND_MODE            (0x1 << 4)
> +#define VIP_CSI_DISABLE_CROP           (0x0 << 5)
> +#define VIP_CSI_ENABLE_CROP                    (0x1 << 5)
> +
> +/* VIP_CSI_INTEN */
> +#define VIP_CSI_FRAME0_START_INTEN(id) (0x1 << ((id) * 2))
> +#define VIP_CSI_FRAME1_START_INTEN(id) (0x1 << ((id) * 2 + 1))
> +#define VIP_CSI_FRAME0_END_INTEN(id)   (0x1 << ((id) * 2 + 8))
> +#define VIP_CSI_FRAME1_END_INTEN(id)   (0x1 << ((id) * 2 + 9))
> +#define VIP_CSI_DMA_Y_FIFO_OVERFLOW_INTEN      (0x1 << 16)
> +#define VIP_CSI_DMA_UV_FIFO_OVERFLOW_INTEN     (0x1 << 17)
> +#define VIP_CSI_CONFIG_FIFO_OVERFLOW_INTEN     (0x1 << 18)
> +#define VIP_CSI_BANDWIDTH_LACK_INTEN   (0x1 << 19)
> +#define VIP_CSI_RX_FIFO_OVERFLOW_INTEN (0x1 << 20)
> +#define VIP_CSI_ALL_FRAME_START_INTEN  (0xff << 0)
> +#define VIP_CSI_ALL_FRAME_END_INTEN            (0xff << 8)
> +#define VIP_CSI_ALL_ERROR_INTEN                (0x1f << 16)
> +
> +/* VIP_CSI_INTSTAT */
> +#define VIP_CSI_FRAME0_START_ID0               (0x1 << 0)
> +#define VIP_CSI_FRAME1_START_ID0               (0x1 << 1)
> +#define VIP_CSI_FRAME0_START_ID1               (0x1 << 2)
> +#define VIP_CSI_FRAME1_START_ID1               (0x1 << 3)
> +#define VIP_CSI_FRAME0_START_ID2               (0x1 << 4)
> +#define VIP_CSI_FRAME1_START_ID2               (0x1 << 5)
> +#define VIP_CSI_FRAME0_START_ID3               (0x1 << 6)
> +#define VIP_CSI_FRAME1_START_ID3               (0x1 << 7)
> +#define VIP_CSI_FRAME0_END_ID0         (0x1 << 8)
> +#define VIP_CSI_FRAME1_END_ID0         (0x1 << 9)
> +#define VIP_CSI_FRAME0_END_ID1         (0x1 << 10)
> +#define VIP_CSI_FRAME1_END_ID1         (0x1 << 11)
> +#define VIP_CSI_FRAME0_END_ID2         (0x1 << 12)
> +#define VIP_CSI_FRAME1_END_ID2         (0x1 << 13)
> +#define VIP_CSI_FRAME0_END_ID3         (0x1 << 14)
> +#define VIP_CSI_FRAME1_END_ID3         (0x1 << 15)
> +#define VIP_CSI_DMA_Y_FIFO_OVERFLOW            (0x1 << 16)
> +#define VIP_CSI_DMA_UV_FIFO_OVERFLOW   (0x1 << 17)
> +#define VIP_CSI_CONFIG_FIFO_OVERFLOW   (0x1 << 18)
> +#define VIP_CSI_BANDWIDTH_LACK         (0x1 << 19)
> +#define VIP_CSI_RX_FIFO_OVERFLOW               (0x1 << 20)
> +
> +#define VIP_CSI_FIFO_OVERFLOW  (VIP_CSI_DMA_Y_FIFO_OVERFLOW |  \
> +                                VIP_CSI_DMA_UV_FIFO_OVERFLOW | \
> +                                VIP_CSI_CONFIG_FIFO_OVERFLOW | \
> +                                VIP_CSI_RX_FIFO_OVERFLOW)
> +
> +/* CSI Host Registers Define */
> +#define VIP_CSIHOST_N_LANES            0x04
> +#define VIP_CSIHOST_PHY_RSTZ   0x0c
> +#define VIP_CSIHOST_RESETN             0x10
> +#define VIP_CSIHOST_ERR1               0x20
> +#define VIP_CSIHOST_ERR2               0x24
> +#define VIP_CSIHOST_MSK1               0x28
> +#define VIP_CSIHOST_MSK2               0x2c
> +#define VIP_CSIHOST_CONTROL            0x40
> +
> +#define VIP_SW_CPHY_EN(x)              ((x) << 0)
> +#define VIP_SW_DSI_EN(x)               ((x) << 4)
> +#define VIP_SW_DATATYPE_FS(x)  ((x) << 8)
> +#define VIP_SW_DATATYPE_FE(x)  ((x) << 14)
> +#define VIP_SW_DATATYPE_LS(x)  ((x) << 20)
> +#define VIP_SW_DATATYPE_LE(x)  ((x) << 26)
> +
> +#endif
> --
> 2.25.4
>
Dafna Hirschfeld Oct. 6, 2020, 5:33 p.m. UTC | #2
Hi,

Am 02.10.20 um 19:35 schrieb Ezequiel Garcia:
>   Hi Maxime,
> 
> Thanks to Dafna, I found the patch ^_^
> 
> The driver looks real good. Just a few comments below.
> 
> Is the driver passing latest v4l2-compliance tests?
> 
> On Tue, 22 Sep 2020 at 13:55, Maxime Chevallier
> <maxime.chevallier@bootlin.com> wrote:
>>
>> Introduce a driver for the camera interface on some Rockchip platforms.
>>
>> This controller supports CSI2 and BT656 interfaces, but for
>> now only the BT656 interface could be tested, hence it's the only one
>> that's supported in the first version of this driver.
>>
>> This controller can be fond on PX30, RK1808, RK3128, RK3288 and RK3288,
>> but for now it's only be tested on PX30.
>>
>> Most of this driver was written following the BSP driver from rockchip,
>> removing the parts that either didn't fit correctly the guidelines, or
>> that couldn't be tested.
>>
>> In the BSP, this driver is known as the "cif" driver, but this was
>> renamed to "vip" to better fit the controller denomination in the
>> datasheet.
>>
>> This basic version doesn't support cropping nor scaling, and is only
>> designed with one sensor being attached to it a any time.
>>
>> This version uses the "pingpong" mode of the controller, which is a
>> double-buffering mechanism.
>>
>> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
>> ---
>> V3:
>>   - renamed the driver
>>   - Took Hans, Robin and Ezequiel's reviews into account
>>   - Implemented the ouble-buffering mode
>>
>>   drivers/media/platform/Kconfig                |   13 +
>>   drivers/media/platform/Makefile               |    1 +
>>   drivers/media/platform/rockchip/vip/Makefile  |    3 +
>>   drivers/media/platform/rockchip/vip/capture.c | 1246 +++++++++++++++++
>>   drivers/media/platform/rockchip/vip/dev.c     |  408 ++++++
>>   drivers/media/platform/rockchip/vip/dev.h     |  206 +++
>>   drivers/media/platform/rockchip/vip/regs.h    |  260 ++++
>>   7 files changed, 2137 insertions(+)
>>   create mode 100644 drivers/media/platform/rockchip/vip/Makefile
>>   create mode 100644 drivers/media/platform/rockchip/vip/capture.c
>>   create mode 100644 drivers/media/platform/rockchip/vip/dev.c
>>   create mode 100644 drivers/media/platform/rockchip/vip/dev.h
>>   create mode 100644 drivers/media/platform/rockchip/vip/regs.h
>>
>> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
>> index c57ee78fa99d..5bc67a0bdd69 100644
>> --- a/drivers/media/platform/Kconfig
>> +++ b/drivers/media/platform/Kconfig
>> @@ -461,6 +461,19 @@ config VIDEO_ROCKCHIP_RGA
>>
>>            To compile this driver as a module choose m here.
>>
>> +config VIDEO_ROCKCHIP_VIP
>> +       tristate "Rockchip VIP (Video InPut) Camera Interface"
>> +       depends on VIDEO_DEV && VIDEO_V4L2
>> +       depends on ARCH_ROCKCHIP || COMPILE_TEST
>> +       select VIDEOBUF2_DMA_SG
>> +       select VIDEOBUF2_DMA_CONTIG
>> +       select V4L2_FWNODE
>> +       select V4L2_MEM2MEM_DEV
>> +       help
>> +         This is a v4l2 driver for Rockchip SOC Camera interface.
>> +
>> +         To compile this driver as a module choose m here.
>> +
> 
> Please add ... "the module will be called {the name}".
> 
>>   config VIDEO_TI_VPE
>>          tristate "TI VPE (Video Processing Engine) driver"
>>          depends on VIDEO_DEV && VIDEO_V4L2
>> diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
>> index 62b6cdc8c730..d056f5618c2b 100644
>> --- a/drivers/media/platform/Makefile
>> +++ b/drivers/media/platform/Makefile
>> @@ -53,6 +53,7 @@ obj-$(CONFIG_VIDEO_RENESAS_JPU)               += rcar_jpu.o
>>   obj-$(CONFIG_VIDEO_RENESAS_VSP1)       += vsp1/
>>
>>   obj-$(CONFIG_VIDEO_ROCKCHIP_RGA)       += rockchip/rga/
>> +obj-$(CONFIG_VIDEO_ROCKCHIP_VIP)       += rockchip/vip/
>>
>>   obj-y  += omap/
>>
>> diff --git a/drivers/media/platform/rockchip/vip/Makefile b/drivers/media/platform/rockchip/vip/Makefile
>> new file mode 100644
>> index 000000000000..c239ee0bb0fe
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/vip/Makefile
>> @@ -0,0 +1,3 @@
>> +# SPDX-License-Identifier: GPL-2.0
>> +obj-$(CONFIG_VIDEO_ROCKCHIP_VIP) += video_rkvip.o
>> +video_rkvip-objs += dev.o capture.o
>> diff --git a/drivers/media/platform/rockchip/vip/capture.c b/drivers/media/platform/rockchip/vip/capture.c
>> new file mode 100644
>> index 000000000000..6f8e1184695c
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/vip/capture.c
>> @@ -0,0 +1,1246 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Rockchip VIP Camera Interface Driver
>> + *
>> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
>> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
>> + */
>> +
>> +#include <linux/delay.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/reset.h>
>> +#include <media/v4l2-common.h>
>> +#include <media/v4l2-event.h>
>> +#include <media/v4l2-fh.h>
>> +#include <media/v4l2-fwnode.h>
>> +#include <media/v4l2-ioctl.h>
>> +#include <media/v4l2-mc.h>
>> +#include <media/v4l2-subdev.h>
>> +#include <media/videobuf2-dma-contig.h>
>> +
>> +#include "dev.h"
>> +#include "regs.h"
>> +
>> +#define VIP_REQ_BUFS_MIN       1
> 
> I think you might want to have more than 1 buffer
> as minimum. How about 3? Two for the ping and pong,
> and one more in the queue.
> 
>> +#define VIP_MIN_WIDTH          64
>> +#define VIP_MIN_HEIGHT         64
>> +#define VIP_MAX_WIDTH          8192
>> +#define VIP_MAX_HEIGHT         8192
>> +
>> +#define RK_VIP_PLANE_Y                 0
>> +#define RK_VIP_PLANE_CBCR              1
>> +
>> +#define VIP_FETCH_Y_LAST_LINE(VAL) ((VAL) & 0x1fff)
>> +/* Check if swap y and c in bt1120 mode */
>> +#define VIP_FETCH_IS_Y_FIRST(VAL) ((VAL) & 0xf)
>> +
>> +/* Get xsubs and ysubs for fourcc formats
>> + *
>> + * @xsubs: horizontal color samples in a 4*4 matrix, for yuv
>> + * @ysubs: vertical color samples in a 4*4 matrix, for yuv
>> + */
>> +static int fcc_xysubs(u32 fcc, u32 *xsubs, u32 *ysubs)
> 
> See below, you should be using v4l2_fill_pixfmt_mp.
> 
>> +{
>> +       switch (fcc) {
>> +       case V4L2_PIX_FMT_NV16:
>> +       case V4L2_PIX_FMT_NV61:
>> +               *xsubs = 2;
>> +               *ysubs = 1;
>> +               break;
>> +       case V4L2_PIX_FMT_NV21:
>> +       case V4L2_PIX_FMT_NV12:
>> +               *xsubs = 2;
>> +               *ysubs = 2;
>> +               break;
>> +       default:
>> +               return -EINVAL;
>> +       }
>> +
>> +       return 0;
>> +}
>> +
>> +static const struct vip_output_fmt out_fmts[] = {
>> +       {
>> +               .fourcc = V4L2_PIX_FMT_NV16,
>> +               .cplanes = 2,
> 
>  From what I can see, you are only using this
> information to calculate bytesperline and sizeimage,
> so you should be using the v4l2_fill_pixfmt_mp() helper.
> 
>> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_422 |
>> +                          VIP_FORMAT_UV_STORAGE_ORDER_UVUV,
>> +               .bpp = { 8, 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_NV61,
>> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_422 |
>> +                          VIP_FORMAT_UV_STORAGE_ORDER_VUVU,
>> +               .cplanes = 2,
>> +               .bpp = { 8, 16 },
>> +       },
>> +       {
>> +               .fourcc = V4L2_PIX_FMT_NV12,
>> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_420 |
>> +                          VIP_FORMAT_UV_STORAGE_ORDER_UVUV,
>> +               .cplanes = 2,
>> +               .bpp = { 8, 16 },
>> +               .mbus = MEDIA_BUS_FMT_UYVY8_2X8,
>> +       },
>> +       {
>> +               .fourcc = V4L2_PIX_FMT_NV21,
>> +               .fmt_val = VIP_FORMAT_YUV_OUTPUT_420 |
>> +                          VIP_FORMAT_UV_STORAGE_ORDER_VUVU,
>> +               .cplanes = 2,
>> +               .bpp = { 8, 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_RGB24,
>> +               .cplanes = 1,
>> +               .bpp = { 24 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_RGB565,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_BGR666,
>> +               .cplanes = 1,
>> +               .bpp = { 18 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SRGGB8,
>> +               .cplanes = 1,
>> +               .bpp = { 8 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SGRBG8,
>> +               .cplanes = 1,
>> +               .bpp = { 8 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SGBRG8,
>> +               .cplanes = 1,
>> +               .bpp = { 8 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SBGGR8,
>> +               .cplanes = 1,
>> +               .bpp = { 8 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SRGGB10,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SGRBG10,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SGBRG10,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SBGGR10,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SRGGB12,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SGRBG12,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SGBRG12,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SBGGR12,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_SBGGR16,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }, {
>> +               .fourcc = V4L2_PIX_FMT_Y16,
>> +               .cplanes = 1,
>> +               .bpp = { 16 },
>> +       }
>> +};
>> +
>> +static const struct vip_input_fmt in_fmts[] = {
>> +       {
>> +               .mbus_code      = MEDIA_BUS_FMT_YUYV8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YUYV,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_YUYV8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YUYV,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_INTERLACED,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_YVYU8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YVYU,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_YVYU8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_YVYU,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_INTERLACED,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_UYVY8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_UYVY,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_UYVY8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_UYVY,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_INTERLACED,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_VYUY8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_VYUY,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_VYUY8_2X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_YUV_INPUT_422 |
>> +                                 VIP_FORMAT_YUV_INPUT_ORDER_VYUY,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_YUV422,
>> +               .fmt_type       = VIP_FMT_TYPE_YUV,
>> +               .field          = V4L2_FIELD_INTERLACED,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SBGGR8_1X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SGBRG8_1X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SGRBG8_1X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SRGGB8_1X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SBGGR10_1X10,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SGBRG10_1X10,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SGRBG10_1X10,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SRGGB10_1X10,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SBGGR12_1X12,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SGBRG12_1X12,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SGRBG12_1X12,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_SRGGB12_1X12,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_RGB888_1X24,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RGB888,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_Y8_1X8,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_8,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW8,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_Y10_1X10,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_10,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW10,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }, {
>> +               .mbus_code      = MEDIA_BUS_FMT_Y12_1X12,
>> +               .dvp_fmt_val    = VIP_FORMAT_INPUT_MODE_RAW |
>> +                                 VIP_FORMAT_RAW_DATA_WIDTH_12,
>> +               .csi_fmt_val    = VIP_CSI_WRDDR_TYPE_RAW12,
>> +               .fmt_type       = VIP_FMT_TYPE_RAW,
>> +               .field          = V4L2_FIELD_NONE,
>> +       }
>> +};
>> +
>> +static const struct
>> +vip_input_fmt *get_input_fmt(struct v4l2_subdev *sd)
>> +{
>> +       struct v4l2_subdev_format fmt;
>> +       int ret;
>> +       u32 i;
>> +
>> +       fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
>> +       fmt.pad = 0;
>> +       ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
>> +       if (ret < 0) {
>> +               v4l2_warn(sd->v4l2_dev,
>> +                         "sensor fmt invalid, set to default size\n");
>> +               goto set_default;
>> +       }
>> +
>> +       for (i = 0; i < ARRAY_SIZE(in_fmts); i++)
>> +               if (fmt.format.code == in_fmts[i].mbus_code &&
>> +                   fmt.format.field == in_fmts[i].field)
>> +                       return &in_fmts[i];
>> +
>> +       v4l2_err(sd->v4l2_dev, "remote sensor mbus code not supported\n");
>> +
>> +set_default:
>> +       return NULL;
>> +}
>> +
>> +static const struct
>> +vip_output_fmt *find_output_fmt(struct rk_vip_stream *stream, u32 pixelfmt)
>> +{
>> +       const struct vip_output_fmt *fmt;
>> +       u32 i;
>> +
>> +       for (i = 0; i < ARRAY_SIZE(out_fmts); i++) {
>> +               fmt = &out_fmts[i];
>> +               if (fmt->fourcc == pixelfmt)
>> +                       return fmt;
>> +       }
>> +
>> +       return NULL;
>> +}
>> +
>> +static void rk_vip_setup_buffers(struct rk_vip_stream *stream)
>> +{
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       void __iomem *base = dev->base_addr;
>> +
>> +       write_vip_reg(base, VIP_FRM0_ADDR_Y, stream->buffs[0]->buff_addr[RK_VIP_PLANE_Y]);
>> +       write_vip_reg(base, VIP_FRM0_ADDR_UV, stream->buffs[0]->buff_addr[RK_VIP_PLANE_CBCR]);
>> +
>> +       write_vip_reg(base, VIP_FRM1_ADDR_Y, stream->buffs[1]->buff_addr[RK_VIP_PLANE_Y]);
>> +       write_vip_reg(base, VIP_FRM1_ADDR_UV, stream->buffs[1]->buff_addr[RK_VIP_PLANE_CBCR]);
>> +}
>> +
>> +static struct rk_vip_buffer *rk_vip_buffer_next(struct rk_vip_stream *stream)
>> +{
>> +       struct rk_vip_buffer *buff;
>> +
>> +       if (list_empty(&stream->buf_head))
>> +               return NULL;
>> +
>> +       buff = list_first_entry(&stream->buf_head, struct rk_vip_buffer, queue);
>> +       list_del(&buff->queue);
>> +
>> +       return buff;
>> +}
>> +
>> +static void rk_vip_init_buffers(struct rk_vip_stream *stream)
>> +{
>> +       spin_lock(&stream->vbq_lock);
>> +
>> +       stream->buffs[0] = rk_vip_buffer_next(stream);
>> +       stream->buffs[1] = rk_vip_buffer_next(stream);
>> +
>> +       spin_unlock(&stream->vbq_lock);
>> +
>> +       rk_vip_setup_buffers(stream);
>> +}
>> +
>> +static void rk_vip_assign_new_buffer_pingpong(struct rk_vip_stream *stream)
>> +{
>> +       struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct rk_vip_buffer *buffer = NULL;
>> +       void __iomem *base = dev->base_addr;
>> +       u32 frm_addr_y, frm_addr_uv;
>> +
>> +       /* Set up an empty buffer for the next frame */
>> +       spin_lock(&stream->vbq_lock);
>> +
>> +       buffer = rk_vip_buffer_next(stream);
>> +       stream->buffs[stream->frame_phase] = buffer;
>> +
>> +       spin_unlock(&stream->vbq_lock);
>> +
>> +       frm_addr_y = stream->frame_phase ? VIP_FRM1_ADDR_Y : VIP_FRM0_ADDR_Y;
>> +       frm_addr_uv = stream->frame_phase ? VIP_FRM1_ADDR_UV : VIP_FRM0_ADDR_UV;
>> +
>> +       if (buffer) {
>> +               write_vip_reg(base, frm_addr_y,
>> +                             buffer->buff_addr[RK_VIP_PLANE_Y]);
>> +               write_vip_reg(base, frm_addr_uv,
>> +                             buffer->buff_addr[RK_VIP_PLANE_CBCR]);
>> +       } else {
>> +               write_vip_reg(base, frm_addr_y, scratch_buf->dma_addr);
>> +               write_vip_reg(base, frm_addr_uv, scratch_buf->dma_addr);
>> +       }
>> +}
>> +
>> +static void rk_vip_stream_stop(struct rk_vip_stream *stream)
>> +{
>> +       struct rk_vip_device *vip_dev = stream->vipdev;
>> +       void __iomem *base = vip_dev->base_addr;
>> +       u32 val;
>> +
>> +       val = read_vip_reg(base, VIP_CTRL);
>> +       write_vip_reg(base, VIP_CTRL, val & (~VIP_CTRL_ENABLE_CAPTURE));
>> +       write_vip_reg(base, VIP_INTEN, 0x0);
>> +       write_vip_reg(base, VIP_INTSTAT, 0x3ff);
>> +       write_vip_reg(base, VIP_FRAME_STATUS, 0x0);
>> +
>> +       stream->state = RK_VIP_STATE_READY;
>> +}
>> +
>> +static int rk_vip_queue_setup(struct vb2_queue *queue,
>> +                             unsigned int *num_buffers,
>> +                             unsigned int *num_planes,
>> +                             unsigned int sizes[],
>> +                             struct device *alloc_devs[])
>> +{
>> +       struct rk_vip_stream *stream = queue->drv_priv;
>> +       const struct v4l2_plane_pix_format *plane_fmt;
>> +       const struct v4l2_pix_format_mplane *pixm;
>> +       const struct vip_output_fmt *vip_fmt;
>> +
>> +       pixm = &stream->pixm;
>> +       vip_fmt = stream->vip_fmt_out;
>> +
>> +       if (*num_planes) {
>> +               if (*num_planes != 1)
>> +                       return -EINVAL;
>> +
>> +               if (sizes[0] < pixm->plane_fmt[0].sizeimage)
>> +                       return -EINVAL;
>> +               return 0;
>> +       }
>> +
>> +       *num_planes = 1;
>> +
>> +       plane_fmt = &pixm->plane_fmt[0];
>> +       sizes[0] = plane_fmt->sizeimage;
>> +
>> +       *num_buffers = 5;
>> +
> 
> Why not using VIP_REQ_BUFS_MIN here? (defined as 3)
> 
>> +       return 0;
>> +}
>> +
>> +static void rk_vip_buf_queue(struct vb2_buffer *vb)
>> +{
>> +       struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
>> +       struct rk_vip_buffer *vipbuf = to_rk_vip_buffer(vbuf);
>> +       struct vb2_queue *queue = vb->vb2_queue;
>> +       struct rk_vip_stream *stream = queue->drv_priv;
>> +       struct v4l2_pix_format_mplane *pixm = &stream->pixm;
>> +       const struct vip_output_fmt *fmt = stream->vip_fmt_out;
>> +       unsigned long lock_flags = 0;
>> +       int i;
>> +
>> +       memset(vipbuf->buff_addr, 0, sizeof(vipbuf->buff_addr));
>> +
>> +       vipbuf->buff_addr[0] = vb2_dma_contig_plane_dma_addr(vb, 0);
>> +
>> +       for (i = 0; i < fmt->cplanes - 1; i++)
>> +               vipbuf->buff_addr[i + 1] = vipbuf->buff_addr[i] +
>> +                       pixm->plane_fmt[i].bytesperline * pixm->height;
>> +
>> +       spin_lock_irqsave(&stream->vbq_lock, lock_flags);
>> +       list_add_tail(&vipbuf->queue, &stream->buf_head);
>> +       spin_unlock_irqrestore(&stream->vbq_lock, lock_flags);
>> +}
>> +
>> +static int rk_vip_create_scratch_buf(struct rk_vip_stream *stream)
>> +{
>> +       struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +
>> +       /* get a maximum plane size */
>> +       scratch_buf->size = max(stream->pixm.plane_fmt[0].sizeimage,
>> +                               stream->pixm.plane_fmt[1].sizeimage);
>> +
>> +       scratch_buf->vaddr = dma_alloc_coherent(dev->dev, scratch_buf->size,
>> +                                               &scratch_buf->dma_addr,
>> +                                               GFP_KERNEL);
>> +       if (!scratch_buf->vaddr) {
>> +               v4l2_err(&dev->v4l2_dev,
>> +                        "Failed to allocate the memory for scratch buffer\n");
>> +               return -ENOMEM;
>> +       }
>> +
>> +       v4l2_info(&dev->v4l2_dev, "Allocate scratch buffer, size: 0x%08x\n",
>> +                 scratch_buf->size);
>> +
> 
> I would silence this message. The scratch buffers are just regular buffers,
> why printing this on each start of streaming (well, why printing this at all) ?
> 
>> +       return 0;
>> +}
>> +
>> +static void rk_vip_destroy_scratch_buf(struct rk_vip_stream *stream)
>> +{
>> +       struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +
>> +       dma_free_coherent(dev->dev, scratch_buf->size,
>> +                         scratch_buf->vaddr, scratch_buf->dma_addr);
>> +}
>> +
>> +static void rk_vip_stop_streaming(struct vb2_queue *queue)
>> +{
>> +       struct rk_vip_stream *stream = queue->drv_priv;
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct rk_vip_buffer *buf;
>> +       struct v4l2_subdev *sd;
>> +       int ret;
>> +
>> +       stream->stopping = true;
>> +       ret = wait_event_timeout(stream->wq_stopped,
>> +                                stream->state != RK_VIP_STATE_STREAMING,
>> +                                msecs_to_jiffies(1000));
>> +       if (!ret) {
>> +               rk_vip_stream_stop(stream);
>> +               stream->stopping = false;
>> +       }
>> +       pm_runtime_put(dev->dev);
>> +
>> +       /* stop the sub device*/
>> +       sd = dev->sensor.sd;
>> +       v4l2_subdev_call(sd, video, s_stream, 0);
>> +       v4l2_subdev_call(sd, core, s_power, 0);
>> +
>> +       /* release buffers */
>> +       if (stream->buffs[0]) {
>> +               list_add_tail(&stream->buffs[0]->queue, &stream->buf_head);

I would call vb2_buffer_done directly instead of adddin to the list

>> +               stream->buffs[0] = NULL;
>> +       }
>> +       if (stream->buffs[1]) {
>> +               list_add_tail(&stream->buffs[1]->queue, &stream->buf_head);
>> +               stream->buffs[1] = NULL;
>> +       }
>> +
>> +       while (!list_empty(&stream->buf_head)) {
>> +               buf = rk_vip_buffer_next(stream);
>> +               vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
>> +       }
>> +
>> +       rk_vip_destroy_scratch_buf(stream);
>> +}
>> +
>> +static u32 rk_vip_determine_input_mode(struct rk_vip_device *dev)
>> +{
>> +       struct rk_vip_sensor_info *sensor_info = &dev->sensor;
>> +       struct rk_vip_stream *stream = &dev->stream;
>> +       v4l2_std_id std;
>> +       u32 mode = VIP_FORMAT_INPUT_MODE_YUV;
>> +       int ret;
>> +
>> +       ret = v4l2_subdev_call(sensor_info->sd, video, querystd, &std);
>> +       if (ret == 0) {
>> +               /* retrieve std from sensor if exist */
>> +               switch (std) {
>> +               case 0:
>> +                       break;
>> +               case V4L2_STD_NTSC:
>> +                       mode = VIP_FORMAT_INPUT_MODE_NTSC;
>> +                       break;
>> +               case V4L2_STD_PAL:
>> +                       mode = VIP_FORMAT_INPUT_MODE_PAL;
>> +                       break;
>> +               case V4L2_STD_ATSC:
>> +                       mode = VIP_FORMAT_INPUT_MODE_BT1120;
>> +                       break;
>> +               default:
>> +                       v4l2_err(&dev->v4l2_dev,
>> +                                "std: %lld is not supported", std);
>> +               }
>> +       } else {
>> +               /* determine input mode by mbus_code (fmt_type) */
>> +               switch (stream->vip_fmt_in->fmt_type) {
>> +               case VIP_FMT_TYPE_YUV:
>> +                       mode = VIP_FORMAT_INPUT_MODE_YUV;
>> +                       break;
>> +               case VIP_FMT_TYPE_RAW:
>> +                       mode = VIP_FORMAT_INPUT_MODE_RAW;
>> +                       break;
>> +               }
>> +       }
>> +
>> +       return mode;
>> +}
>> +
>> +static inline u32 rk_vip_scl_ctl(struct rk_vip_stream *stream)
>> +{
>> +       u32 fmt_type = stream->vip_fmt_in->fmt_type;
>> +
>> +       return (fmt_type == VIP_FMT_TYPE_YUV) ?
>> +               VIP_SCL_CTRL_ENABLE_YUV_16BIT_BYPASS :
>> +               VIP_SCL_CTRL_ENABLE_RAW_16BIT_BYPASS;
>> +}
>> +
>> +static int rk_vip_stream_start(struct rk_vip_stream *stream)
>> +{
>> +       u32 val, mbus_flags, href_pol, vsync_pol,
>> +           xfer_mode = 0, yc_swap = 0, skip_top = 0;
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct rk_vip_sensor_info *sensor_info;
>> +       void __iomem *base = dev->base_addr;
>> +
>> +       sensor_info = &dev->sensor;
>> +       stream->frame_idx = 0;
>> +
>> +       mbus_flags = sensor_info->mbus.flags;
>> +       href_pol = (mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) ?
>> +                       VIP_FORMAT_HSY_HIGH_ACTIVE : VIP_FORMAT_HSY_LOW_ACTIVE;
>> +       vsync_pol = (mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) ?
>> +                       VIP_FORMAT_VSY_HIGH_ACTIVE : VIP_FORMAT_VSY_LOW_ACTIVE;
>> +
>> +       if (rk_vip_determine_input_mode(dev) == VIP_FORMAT_INPUT_MODE_BT1120) {
>> +               if (stream->vip_fmt_in->field == V4L2_FIELD_NONE)
>> +                       xfer_mode = VIP_FORMAT_BT1120_TRANSMIT_PROGRESS;
>> +               else
>> +                       xfer_mode = VIP_FORMAT_BT1120_TRANSMIT_INTERFACE;
>> +
>> +               if (!VIP_FETCH_IS_Y_FIRST(stream->vip_fmt_in->dvp_fmt_val))
>> +                       yc_swap = VIP_FORMAT_BT1120_YC_SWAP;
>> +       }
>> +
>> +       val = vsync_pol | href_pol | rk_vip_determine_input_mode(dev) |
>> +             stream->vip_fmt_out->fmt_val | stream->vip_fmt_in->dvp_fmt_val |
>> +             xfer_mode | yc_swap;
>> +       write_vip_reg(base, VIP_FOR, val);
>> +       val = stream->pixm.width;
>> +       if (stream->vip_fmt_in->fmt_type == VIP_FMT_TYPE_RAW)
>> +               val = stream->pixm.width * 2;
>> +       write_vip_reg(base, VIP_VIR_LINE_WIDTH, val);
>> +       write_vip_reg(base, VIP_SET_SIZE,
>> +                     stream->pixm.width | (stream->pixm.height << 16));
>> +
>> +       v4l2_subdev_call(sensor_info->sd, sensor, g_skip_top_lines, &skip_top);
>> +
>> +       write_vip_reg(base, VIP_CROP, skip_top << VIP_CROP_Y_SHIFT);
>> +       write_vip_reg(base, VIP_FRAME_STATUS, VIP_FRAME_STAT_CLS);
>> +       write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_CLS);
>> +       write_vip_reg(base, VIP_SCL_CTRL, rk_vip_scl_ctl(stream));
>> +
>> +       rk_vip_init_buffers(stream);
>> +
>> +       write_vip_reg(base, VIP_INTEN, VIP_INTEN_FRAME_END_EN |
>> +                                      VIP_INTEN_LINE_ERR_EN |
>> +                                      VIP_INTEN_PST_INF_FRAME_END_EN);
>> +
>> +       write_vip_reg(base, VIP_CTRL, VIP_CTRL_AXI_BURST_16 |
>> +                                     VIP_CTRL_MODE_PINGPONG |
>> +                                     VIP_CTRL_ENABLE_CAPTURE);
>> +
>> +       stream->state = RK_VIP_STATE_STREAMING;
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_start_streaming(struct vb2_queue *queue, unsigned int count)
>> +{
>> +       struct rk_vip_stream *stream = queue->drv_priv;
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
>> +       struct v4l2_subdev *sd;
>> +       int ret;
>> +
>> +       if (WARN_ON(stream->state != RK_VIP_STATE_READY)) {
>> +               ret = -EBUSY;
>> +               v4l2_err(v4l2_dev, "stream in busy state\n");
>> +               goto destroy_buf;
>> +       }
>> +
>> +       stream->vip_fmt_in = get_input_fmt(dev->sensor.sd);
>> +
>> +       ret = rk_vip_create_scratch_buf(stream);
>> +       if (ret < 0) {
>> +               v4l2_err(v4l2_dev, "Failed to create scratch_buf, %d\n", ret);
>> +               goto destroy_buf;
>> +       }
>> +
>> +       ret = pm_runtime_get_sync(dev->dev);
>> +       if (ret < 0) {
>> +               v4l2_err(v4l2_dev, "Failed to get runtime pm, %d\n", ret);
>> +               goto destroy_scratch_buf;
>> +       }
>> +
>> +       /* start sub-devices */
>> +       sd = dev->sensor.sd;
>> +       ret = v4l2_subdev_call(sd, core, s_power, 1);
>> +       if (ret < 0 && ret != -ENOIOCTLCMD)
>> +               goto runtime_put;
>> +       ret = v4l2_subdev_call(sd, video, s_stream, 1);
>> +       if (ret < 0)
>> +               goto subdev_poweroff;
>> +
>> +       ret = rk_vip_stream_start(stream);
>> +       if (ret < 0)
>> +               goto stop_stream;
>> +
>> +       return 0;
>> +
>> +stop_stream:
>> +       rk_vip_stream_stop(stream);
>> +subdev_poweroff:
>> +       v4l2_subdev_call(sd, core, s_power, 0);
>> +runtime_put:
>> +       pm_runtime_put(dev->dev);
>> +destroy_scratch_buf:
>> +       rk_vip_destroy_scratch_buf(stream);
>> +destroy_buf:
>> +       while (!list_empty(&stream->buf_head)) {
>> +               struct rk_vip_buffer *buf;
>> +
>> +               buf = rk_vip_buffer_next(stream);
>> +               vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
>> +       }
>> +
>> +       return ret;
>> +}
>> +
>> +static struct vb2_ops rk_vip_vb2_ops = {
>> +       .queue_setup = rk_vip_queue_setup,
>> +       .buf_queue = rk_vip_buf_queue,
>> +       .wait_prepare = vb2_ops_wait_prepare,
>> +       .wait_finish = vb2_ops_wait_finish,
>> +       .stop_streaming = rk_vip_stop_streaming,
>> +       .start_streaming = rk_vip_start_streaming,
>> +};
>> +
>> +static int rk_vip_init_vb2_queue(struct vb2_queue *q,
>> +                                struct rk_vip_stream *stream,
>> +                                enum v4l2_buf_type buf_type)
>> +{
>> +       q->type = buf_type;
> 
> Looks this is only called with one buf_type, so why not hardcoding it here?
> 
>> +       q->io_modes = VB2_MMAP | VB2_DMABUF;
>> +       q->drv_priv = stream;
>> +       q->ops = &rk_vip_vb2_ops;
>> +       q->mem_ops = &vb2_dma_contig_memops;
>> +       q->buf_struct_size = sizeof(struct rk_vip_buffer);
>> +       q->min_buffers_needed = VIP_REQ_BUFS_MIN;
>> +       q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
>> +       q->lock = &stream->vlock;
>> +       q->dev = stream->vipdev->dev;
>> +
>> +       return vb2_queue_init(q);
>> +}
>> +
>> +static void rk_vip_set_fmt(struct rk_vip_stream *stream,
>> +                          struct v4l2_pix_format_mplane *pixm,
>> +                          bool try)
>> +{
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct v4l2_subdev_format sd_fmt;
>> +       const struct vip_output_fmt *fmt;
>> +       struct v4l2_rect input_rect;
>> +       unsigned int planes, imagesize = 0;
>> +       u32 xsubs = 1, ysubs = 1;
>> +       int i;
>> +
> 
> I was expecting to see some is_busy or is_streaming check
> here, have you tested what happens if you change the format
> while streaming, or after buffers are queued?
> 
>> +       fmt = find_output_fmt(stream, pixm->pixelformat);
>> +       if (!fmt)
>> +               fmt = &out_fmts[0];
>> +
>> +       if (!try) {
>> +               sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
>> +               sd_fmt.pad = 0;
>> +               sd_fmt.format.width = pixm->width;
>> +               sd_fmt.format.height = pixm->height;
>> +               v4l2_subdev_call(dev->sensor.sd, pad, set_fmt, NULL, &sd_fmt);

I see that there is a call to v4l2_device_register_subdev_nodes which means that the
sd will also have a node that userspace can confiugre with ioctl,
in that case userspace should call set_fmt on the subdevice driectly.

>> +
>> +               pixm->width = sd_fmt.format.width;
>> +               pixm->height = sd_fmt.format.height;
>> +       }
>> +
>> +       input_rect.width = VIP_MAX_WIDTH;
>> +       input_rect.height = VIP_MAX_HEIGHT;
>> +
>> +       pixm->width = clamp_t(u32, pixm->width,
>> +                             VIP_MIN_WIDTH, input_rect.width);
>> +       pixm->height = clamp_t(u32, pixm->height,
>> +                              VIP_MIN_HEIGHT, input_rect.height);
>> +
>> +       pixm->num_planes = 1;
>> +       pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
>> +       pixm->colorspace = V4L2_COLORSPACE_SRGB;
>> +
>> +       pixm->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pixm->colorspace);
>> +       pixm->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pixm->colorspace);
>> +
>> +       pixm->pixelformat = fmt->fourcc;
>> +       pixm->field = V4L2_FIELD_NONE;
>> +
>> +       /* calculate plane size and image size */
>> +       fcc_xysubs(fmt->fourcc, &xsubs, &ysubs);
>> +
>> +       planes = fmt->cplanes ? fmt->cplanes : 1;
>> +
>> +       for (i = 0; i < planes; i++) {
>> +               struct v4l2_plane_pix_format *plane_fmt;
>> +               int width, height, bpl, size;
>> +
>> +               if (i == 0) {
>> +                       width = pixm->width;
>> +                       height = pixm->height;
>> +               } else {
>> +                       width = pixm->width / xsubs;
>> +                       height = pixm->height / ysubs;
>> +               }
>> +
>> +               bpl = width * fmt->bpp[i] / 8;
>> +               size = bpl * height;
>> +               imagesize += size;
>> +
>> +               if (i == 0) {
>> +                       /* Set bpl and size for each mplane */
>> +                       plane_fmt = pixm->plane_fmt;
>> +                       plane_fmt->bytesperline = bpl;
>> +                       plane_fmt->sizeimage = size;
>> +               }
>> +       }
>> +
>> +       pixm->plane_fmt[0].sizeimage = imagesize;
>> +
>> +       if (!try) {
>> +               stream->vip_fmt_out = fmt;
>> +               stream->pixm = *pixm;
>> +       }
>> +}
>> +
>> +void rk_vip_stream_init(struct rk_vip_device *dev)
>> +{
>> +       struct rk_vip_stream *stream = &dev->stream;
>> +       struct v4l2_pix_format_mplane pixm;
>> +
>> +       memset(stream, 0, sizeof(*stream));
>> +       memset(&pixm, 0, sizeof(pixm));
>> +       stream->vipdev = dev;
>> +
>> +       INIT_LIST_HEAD(&stream->buf_head);
>> +       spin_lock_init(&stream->vbq_lock);
>> +       stream->state = RK_VIP_STATE_READY;
>> +       init_waitqueue_head(&stream->wq_stopped);
>> +
>> +       /* Set default format */
>> +       pixm.pixelformat = V4L2_PIX_FMT_NV12;
>> +       pixm.width = RK_VIP_DEFAULT_WIDTH;
>> +       pixm.height = RK_VIP_DEFAULT_HEIGHT;
>> +       rk_vip_set_fmt(stream, &pixm, false);
>> +
>> +       stream->crop.left = 0;
>> +       stream->crop.top = 0;
>> +       stream->crop.width = 10;
>> +       stream->crop.height = 10;
>> +}
>> +
>> +static const struct v4l2_file_operations rk_vip_fops = {
>> +       .open = v4l2_fh_open,
>> +       .release = vb2_fop_release,
>> +       .unlocked_ioctl = video_ioctl2,
>> +       .poll = vb2_fop_poll,
>> +       .mmap = vb2_fop_mmap,
>> +};
>> +
>> +static int rk_vip_enum_input(struct file *file, void *priv,
>> +                            struct v4l2_input *input)
>> +{
>> +       if (input->index > 0)
>> +               return -EINVAL;
>> +
>> +       input->type = V4L2_INPUT_TYPE_CAMERA;
>> +       strlcpy(input->name, "Camera", sizeof(input->name));
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_try_fmt_vid_cap_mplane(struct file *file, void *fh,
>> +                                        struct v4l2_format *f)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +
>> +       rk_vip_set_fmt(stream, &f->fmt.pix_mp, true);
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_enum_fmt_vid_cap(struct file *file, void *priv,
>> +                                  struct v4l2_fmtdesc *f)
>> +{
>> +       const struct vip_output_fmt *fmt = NULL;
>> +
>> +       if (f->index >= ARRAY_SIZE(out_fmts))
>> +               return -EINVAL;
>> +
>> +       fmt = &out_fmts[f->index];
>> +       f->pixelformat = fmt->fourcc;
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_s_fmt_vid_cap_mplane(struct file *file,
>> +                                      void *priv, struct v4l2_format *f)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +
>> +       rk_vip_set_fmt(stream, &f->fmt.pix_mp, false);
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_g_fmt_vid_cap_mplane(struct file *file, void *fh,
>> +                                      struct v4l2_format *f)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +
>> +       f->fmt.pix_mp = stream->pixm;
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_querycap(struct file *file, void *priv,
>> +                          struct v4l2_capability *cap)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +       struct device *dev = stream->vipdev->dev;
>> +
>> +       strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
>> +       strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
>> +       snprintf(cap->bus_info, sizeof(cap->bus_info),
>> +                "platform:%s", dev_name(dev));
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_enum_framesizes(struct file *file, void *fh,
>> +                                 struct v4l2_frmsizeenum *fsize)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct v4l2_subdev_frame_size_enum fse = {
>> +               .index = fsize->index,
>> +               .which = V4L2_SUBDEV_FORMAT_ACTIVE,
>> +       };
>> +       const struct vip_output_fmt *fmt;
>> +       int ret;
>> +
>> +       if (!dev->sensor.sd)
>> +               return -EINVAL;
>> +
>> +       fmt = find_output_fmt(stream, fsize->pixel_format);
>> +       if (!fmt)
>> +               return -EINVAL;
>> +
>> +       fse.code = fmt->mbus;
>> +
>> +       ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_size,
>> +                              NULL, &fse);
>> +       if (ret)
>> +               return ret;
>> +
>> +       fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
>> +       fsize->discrete.width = fse.max_width;
>> +       fsize->discrete.height = fse.max_height;
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_enum_frameintervals(struct file *file, void *fh,
>> +                                     struct v4l2_frmivalenum *fival)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +       struct v4l2_subdev_frame_interval_enum fie = {
>> +               .index = fival->index,
>> +               .width = fival->width,
>> +               .height = fival->height,
>> +               .which = V4L2_SUBDEV_FORMAT_ACTIVE,
>> +       };
>> +       const struct vip_output_fmt *fmt;
>> +       int ret;
>> +
>> +       if (!dev->sensor.sd)
>> +               return -EINVAL;
>> +
>> +       fmt = find_output_fmt(stream, fival->pixel_format);
>> +       if (!fmt)
>> +               return -EINVAL;
>> +
>> +       fie.code = fmt->mbus;
>> +
>> +       ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_interval,
>> +                              NULL, &fie);
>> +       if (ret)
>> +               return ret;
>> +
>> +       fival->type = V4L2_FRMSIZE_TYPE_DISCRETE;
>> +       fival->discrete = fie.interval;
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_g_input(struct file *file, void *fh, unsigned int *i)
>> +{
>> +       *i = 0;
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_s_input(struct file *file, void *fh, unsigned int i)
>> +{
> 
> Only one input, why do you need to support this ioctl at all?
> 
>> +       if (i)
>> +               return -EINVAL;
>> +
>> +       return 0;
>> +}
>> +
>> +static int rk_vip_g_parm(struct file *file, void *priv,
>> +                        struct v4l2_streamparm *p)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +
>> +       return v4l2_g_parm_cap(video_devdata(file), dev->sensor.sd, p);
>> +}
>> +
>> +static int rk_vip_s_parm(struct file *file, void *priv,
>> +                        struct v4l2_streamparm *p)
>> +{
>> +       struct rk_vip_stream *stream = video_drvdata(file);
>> +       struct rk_vip_device *dev = stream->vipdev;
>> +
>> +       return v4l2_s_parm_cap(video_devdata(file), dev->sensor.sd, p);
>> +}
>> +
>> +static const struct v4l2_ioctl_ops rk_vip_v4l2_ioctl_ops = {
>> +       .vidioc_reqbufs = vb2_ioctl_reqbufs,
>> +       .vidioc_querybuf = vb2_ioctl_querybuf,
>> +       .vidioc_create_bufs = vb2_ioctl_create_bufs,
>> +       .vidioc_qbuf = vb2_ioctl_qbuf,
>> +       .vidioc_expbuf = vb2_ioctl_expbuf,
>> +       .vidioc_dqbuf = vb2_ioctl_dqbuf,
>> +       .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
>> +       .vidioc_streamon = vb2_ioctl_streamon,
>> +       .vidioc_streamoff = vb2_ioctl_streamoff,
>> +
>> +       .vidioc_enum_fmt_vid_cap = rk_vip_enum_fmt_vid_cap,
>> +       .vidioc_try_fmt_vid_cap_mplane = rk_vip_try_fmt_vid_cap_mplane,
>> +       .vidioc_s_fmt_vid_cap_mplane = rk_vip_s_fmt_vid_cap_mplane,
>> +       .vidioc_g_fmt_vid_cap_mplane = rk_vip_g_fmt_vid_cap_mplane,
>> +       .vidioc_querycap = rk_vip_querycap,
>> +       .vidioc_enum_framesizes = rk_vip_enum_framesizes,
>> +       .vidioc_enum_frameintervals = rk_vip_enum_frameintervals,
>> +
>> +       .vidioc_enum_input = rk_vip_enum_input,
>> +       .vidioc_g_input = rk_vip_g_input,
>> +       .vidioc_s_input = rk_vip_s_input,
>> +
>> +       .vidioc_g_parm = rk_vip_g_parm,
>> +       .vidioc_s_parm = rk_vip_s_parm,
>> +};
>> +
>> +void rk_vip_unregister_stream_vdev(struct rk_vip_device *dev)
>   > +{
>> +       struct rk_vip_stream *stream = &dev->stream;
>> +
>> +       media_entity_cleanup(&stream->vdev.entity);
>> +       video_unregister_device(&stream->vdev);
>> +}
>> +
>> +int rk_vip_register_stream_vdev(struct rk_vip_device *dev)
>> +{
>> +       struct rk_vip_stream *stream = &dev->stream;
>> +       struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
>> +       struct video_device *vdev = &stream->vdev;
>> +       int ret;
>> +
>> +       strlcpy(vdev->name, VIP_VIDEODEVICE_NAME, sizeof(vdev->name));
>> +       mutex_init(&stream->vlock);
>> +
>> +       vdev->ioctl_ops = &rk_vip_v4l2_ioctl_ops;
>> +       vdev->release = video_device_release_empty;
>> +       vdev->fops = &rk_vip_fops;
>> +       vdev->minor = -1;
>> +       vdev->v4l2_dev = v4l2_dev;
>> +       vdev->lock = &stream->vlock;
>> +       vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
>> +                           V4L2_CAP_STREAMING;
>> +       video_set_drvdata(vdev, stream);
>> +       vdev->vfl_dir = VFL_DIR_RX;
>> +       stream->pad.flags = MEDIA_PAD_FL_SINK;
>> +
>> +       rk_vip_init_vb2_queue(&stream->buf_queue, stream,
>> +                             V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE |
>> +                             V4L2_BUF_TYPE_VIDEO_CAPTURE);
>> +       vdev->queue = &stream->buf_queue;
>> +       strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
>> +
>> +       ret = video_register_device(vdev, VFL_TYPE_SUBDEV, -1);

I never saw a device that associate with a queue and register itself as a subdevice.
Does the driver only expose /dev/v4l-subdev* nodes?

>> +       if (ret < 0) {
>> +               v4l2_err(v4l2_dev,
>> +                        "video_register_device failed with error %d\n", ret);
>> +               return ret;
>> +       }
>> +
>> +       ret = media_entity_pads_init(&vdev->entity, 1, &stream->pad);
>> +       if (ret < 0)
>> +               goto unreg;
>> +
>> +       return 0;
>> +unreg:
>> +       video_unregister_device(vdev);
>> +       return ret;
>> +}
>> +
>> +static void rk_vip_vb_done(struct rk_vip_stream *stream,
>> +                          struct vb2_v4l2_buffer *vb_done)
>> +{
>> +       vb2_set_plane_payload(&vb_done->vb2_buf, 0,
>> +                             stream->pixm.plane_fmt[0].sizeimage);
>> +       vb_done->vb2_buf.timestamp = ktime_get_ns();
> 
> vb_done->vb2_buf.sequence = stream->frame_idx; ?
> 
>> +       vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE);
>> +}
>> +
>> +static void rk_vip_reset_stream(struct rk_vip_device *vip_dev)
>> +{
>> +       void __iomem *base = vip_dev->base_addr;
>> +       u32 ctl = read_vip_reg(base, VIP_CTRL);
>> +
>> +       write_vip_reg(base, VIP_CTRL, ctl & (~VIP_CTRL_ENABLE_CAPTURE));
>> +       write_vip_reg(base, VIP_CTRL, ctl | VIP_CTRL_ENABLE_CAPTURE);
>> +}
>> +
>> +void rk_vip_irq_pingpong(struct rk_vip_device *vip_dev)
>> +{
>> +       struct rk_vip_stream *stream = &vip_dev->stream;
>> +       void __iomem *base = vip_dev->base_addr;
>> +       unsigned int intstat;
>> +
>> +       u32 lastline, lastpix, ctl, vip_frmst;
>> +
>> +       intstat = read_vip_reg(base, VIP_INTSTAT);
>> +       vip_frmst = read_vip_reg(base, VIP_FRAME_STATUS);
>> +       lastline = VIP_FETCH_Y_LAST_LINE(read_vip_reg(base, VIP_LAST_LINE));
>> +       lastpix = read_vip_reg(base, VIP_LAST_PIX);
>> +       ctl = read_vip_reg(base, VIP_CTRL);
>> +
>> +       /* There are two irqs enabled:
>> +        *  - PST_INF_FRAME_END: vip FIFO is ready,
>> +        *    this is prior to FRAME_END
>> +        *  - FRAME_END: vip has saved frame to memory,
>> +        *    a frame ready
>> +        */
>> +
>> +       if ((intstat & VIP_INTSTAT_PST_INF_FRAME_END)) {
>> +               write_vip_reg(base, VIP_INTSTAT,
>> +                             VIP_INTSTAT_PST_INF_FRAME_END_CLR);
>> +
>> +               if (stream->stopping)
>> +                       /* To stop VIP ASAP, before FRAME_END irq */
>> +                       write_vip_reg(base, VIP_CTRL,
>> +                                     ctl & (~VIP_CTRL_ENABLE_CAPTURE));
>> +       }
>> +
>> +       if ((intstat & VIP_INTSTAT_PRE_INF_FRAME_END))
>> +               write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_PRE_INF_FRAME_END);
>> +
>> +       if (intstat & (VIP_INTSTAT_LINE_ERR | VIP_INTSTAT_PIX_ERR)) {
>> +               write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_LINE_ERR |
>> +                                                VIP_INTSTAT_PIX_ERR);
>> +               rk_vip_reset_stream(vip_dev);
>> +       }
>> +
>> +       if ((intstat & VIP_INTSTAT_FRAME_END)) {
>> +               struct vb2_v4l2_buffer *vb_done = NULL;
>> +
>> +               write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_FRAME_END_CLR |
>> +                                                VIP_INTSTAT_LINE_END_CLR);
>> +
>> +               if (stream->stopping) {
>> +                       rk_vip_stream_stop(stream);
>> +                       stream->stopping = false;
>> +                       wake_up(&stream->wq_stopped);
>> +                       return;
>> +               }
>> +
>> +               if (lastline != stream->pixm.height) {
>> +                       v4l2_err(&vip_dev->v4l2_dev,
>> +                                "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
>> +                                intstat, vip_frmst, lastline, lastpix);
>> +
>> +                       rk_vip_reset_stream(vip_dev);
>> +               }
>> +
>> +               if (vip_frmst & VIP_INTSTAT_F0_READY)
>> +                       stream->frame_phase = 0;
>> +               else if (vip_frmst & VIP_INTSTAT_F1_READY)
>> +                       stream->frame_phase = 1;
>> +               else
>> +                       return;
>> +
>> +               if (stream->buffs[stream->frame_phase])
>> +                       vb_done = &stream->buffs[stream->frame_phase]->vb;
>> +
>> +               rk_vip_assign_new_buffer_pingpong(stream);
>> +
>> +               if (vb_done)
>> +                       rk_vip_vb_done(stream, vb_done);
>> +
>> +               stream->frame_idx++;
> 
> This counter seems unused, but maybe it should be used
> for the capture buffer sequence, as mentioned above.
> 
>> +       }
>> +}
>> diff --git a/drivers/media/platform/rockchip/vip/dev.c b/drivers/media/platform/rockchip/vip/dev.c
>> new file mode 100644
>> index 000000000000..d9b64f088c37
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/vip/dev.c
>> @@ -0,0 +1,408 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Rockchip VIP Camera Interface Driver
>> + *
>> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
>> + * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/delay.h>
>> +#include <linux/interrupt.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +#include <linux/of_graph.h>
>> +#include <linux/of_platform.h>
>> +#include <linux/of_reserved_mem.h>
>> +#include <linux/reset.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/pinctrl/consumer.h>
>> +#include <media/v4l2-fwnode.h>
>> +
>> +#include "dev.h"
>> +#include "regs.h"
>> +
>> +#define RK_VIP_VERNO_LEN               10
>> +
>> +struct vip_match_data {
>> +       int chip_id;
>> +       const char * const *clks;
>> +       const char * const *rsts;
>> +       int clks_num;
>> +       int rsts_num;
>> +};
>> +
>> +static int rk_vip_create_links(struct rk_vip_device *dev)
>> +{
>> +       struct v4l2_subdev *sd = dev->sensor.sd;
>> +       int ret;
>> +
>> +       ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode,
>> +                                         MEDIA_PAD_FL_SOURCE);
>> +       if (ret)
>> +               return ret;
>> +
>> +       ret = media_create_pad_link(&sd->entity, 0,
>> +                                   &dev->stream.vdev.entity, 0,
>> +                                   MEDIA_LNK_FL_ENABLED);
>> +       if (ret) {
>> +               dev_err(dev->dev, "failed to create link");
>> +               return ret;
>> +       }
>> +
>> +       return 0;
>> +}
>> +
>> +static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
>> +{
>> +       struct rk_vip_device *dev;
>> +       int ret;
>> +
>> +       dev = container_of(notifier, struct rk_vip_device, notifier);
>> +
>> +       mutex_lock(&dev->media_dev.graph_mutex);
>> +
>> +       ret = rk_vip_create_links(dev);
>> +       if (ret < 0)
>> +               goto unlock;
>> +
>> +       ret = v4l2_device_register_subdev_nodes(&dev->v4l2_dev);
>> +       if (ret < 0)
>> +               goto unlock;
>> +
>> +unlock:
>> +       mutex_unlock(&dev->media_dev.graph_mutex);
>> +       return ret;
>> +}
>> +
>> +static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
>> +                                struct v4l2_subdev *subdev,
>> +                                struct v4l2_async_subdev *asd)
>> +{
>> +       struct rk_vip_device *vip_dev = container_of(notifier,
>> +                                       struct rk_vip_device, notifier);
>> +
>> +       int pad;
>> +
>> +       vip_dev->sensor.sd = subdev;
>> +       pad = media_entity_get_fwnode_pad(&subdev->entity, subdev->fwnode,
>> +                                         MEDIA_PAD_FL_SOURCE);
>> +       if (pad < 0)
>> +               return pad;
>> +
>> +       vip_dev->sensor.pad = pad;
>> +
>> +       return 0;
>> +}
>> +
>> +static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
>> +       .bound = subdev_notifier_bound,
>> +       .complete = subdev_notifier_complete,
>> +};
>> +
>> +static int vip_subdev_notifier(struct rk_vip_device *vip_dev)
>> +{
>> +       struct v4l2_async_notifier *ntf = &vip_dev->notifier;
>> +       struct device *dev = vip_dev->dev;
>> +       struct v4l2_fwnode_endpoint vep = {
>> +               .bus_type = V4L2_MBUS_PARALLEL,
>> +       };
>> +       struct fwnode_handle *ep;
>> +       int ret;
>> +
>> +       v4l2_async_notifier_init(ntf);
>> +
>> +       ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0,
>> +                       FWNODE_GRAPH_ENDPOINT_NEXT);
>> +       if (!ep)
>> +               return -EINVAL;
>> +
>> +       ret = v4l2_fwnode_endpoint_parse(ep, &vep);
>> +       if (ret)
>> +               return ret;
>> +
>> +       ret = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
>> +                                                          &vip_dev->asd);
>> +       if (ret)
>> +               return ret;
>> +
>> +       ntf->ops = &subdev_notifier_ops;
>> +
>> +       fwnode_handle_put(ep);
>> +
>> +       ret = v4l2_async_notifier_register(&vip_dev->v4l2_dev, ntf);
>> +       return ret;
>> +}
>> +
>> +static int rk_vip_register_platform_subdevs(struct rk_vip_device *vip_dev)
>> +{
>> +       int ret;
>> +
>> +       ret = rk_vip_register_stream_vdev(vip_dev);
>> +       if (ret < 0)
>> +               return ret;
>> +
>> +       ret = vip_subdev_notifier(vip_dev);
>> +       if (ret < 0) {
>> +               v4l2_err(&vip_dev->v4l2_dev,
>> +                        "Failed to register subdev notifier(%d)\n", ret);
>> +               rk_vip_unregister_stream_vdev(vip_dev);
>> +       }
>> +
>> +       return 0;
>> +}
>> +
>> +static const char * const px30_vip_clks[] = {
>> +       "aclk_vip",
>> +       "hclk_vip",
>> +       "pclk_vip",
>> +       "vip_out",
> 
> These clock names don't seem to match with the devicetree.
> I wonder how have you been testing this, to be honest ^_^  ?
> 
> Isn't probe failing with mismatching clock names?
> 
>> +};
>> +
>> +static const char * const px30_vip_rsts[] = {
>> +       "rst_vip_a",
>> +       "rst_vip_h",
>> +       "rst_vip_pclkin",
>> +};
>> +
>> +static const struct vip_match_data px30_vip_match_data = {
>> +       .chip_id = CHIP_PX30_VIP,
>> +       .clks = px30_vip_clks,
>> +       .clks_num = ARRAY_SIZE(px30_vip_clks),
>> +       .rsts = px30_vip_rsts,
>> +       .rsts_num = ARRAY_SIZE(px30_vip_rsts),
>> +};
>> +
>> +static const struct of_device_id rk_vip_plat_of_match[] = {
>> +       {
>> +               .compatible = "rockchip,px30-vip",
>> +               .data = &px30_vip_match_data,
>> +       },
>> +       {},
>> +};
>> +
>> +static irqreturn_t rk_vip_irq_handler(int irq, void *ctx)
>> +{
>> +       struct device *dev = ctx;
>> +       struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
>> +
>> +       rk_vip_irq_pingpong(vip_dev);
>> +
> 
> Why not just making rk_vip_irq_pingpong the interrupt handler?
> 
>> +       return IRQ_HANDLED;
>> +}
>> +
>> +static void rk_vip_disable_sys_clk(struct rk_vip_device *vip_dev)
>> +{
>> +       int i;
>> +
>> +       for (i = vip_dev->clk_size - 1; i >= 0; i--)
>> +               clk_disable_unprepare(vip_dev->clks[i]);
> 
> Please use clk_bulk_disable_unprepare.
>> +}
>> +
>> +static int rk_vip_enable_sys_clk(struct rk_vip_device *vip_dev)
>> +{
>> +       int i, ret = -EINVAL;
>> +
>> +       for (i = 0; i < vip_dev->clk_size; i++) {
>> +               ret = clk_prepare_enable(vip_dev->clks[i]);
>> +
> 
> Please use clk_bulk_prepare_enable.
> 
>> +               if (ret < 0)
>> +                       goto err;
>> +       }
>> +
>> +       return 0;
>> +
>> +err:
>> +       for (--i; i >= 0; --i)
>> +               clk_disable_unprepare(vip_dev->clks[i]);
>> +
>> +       return ret;
>> +}
>> +
>> +void rk_vip_soft_reset(struct rk_vip_device *vip_dev)
>> +{
>> +       unsigned int i;
>> +
>> +       for (i = 0; i < ARRAY_SIZE(vip_dev->vip_rst); i++)
>> +               if (vip_dev->vip_rst[i])
>> +                       reset_control_assert(vip_dev->vip_rst[i]);
>> +       udelay(5);
>> +       for (i = 0; i < ARRAY_SIZE(vip_dev->vip_rst); i++)
>> +               if (vip_dev->vip_rst[i])
>> +                       reset_control_deassert(vip_dev->vip_rst[i]);
>> +}
>> +
>> +static int rk_vip_plat_probe(struct platform_device *pdev)
>> +{
>> +       const struct of_device_id *match;
>> +       struct device_node *node = pdev->dev.of_node;
>> +       struct device *dev = &pdev->dev;
>> +       struct v4l2_device *v4l2_dev;
>> +       struct rk_vip_device *vip_dev;
>> +       const struct vip_match_data *data;
>> +       struct resource *res;
>> +       int i, ret, irq;
>> +
>> +       match = of_match_node(rk_vip_plat_of_match, node);
>> +       if (IS_ERR(match))
>> +               return PTR_ERR(match);
>> +
>> +       vip_dev = devm_kzalloc(dev, sizeof(*vip_dev), GFP_KERNEL);
>> +       if (!vip_dev)
>> +               return -ENOMEM;
>> +
>> +       dev_set_drvdata(dev, vip_dev);
>> +       vip_dev->dev = dev;
>> +
>> +       irq = platform_get_irq(pdev, 0);
>> +       if (irq < 0)
>> +               return irq;
>> +
>> +       ret = devm_request_irq(dev, irq, rk_vip_irq_handler, IRQF_SHARED,
>> +                              dev_driver_string(dev), dev);
>> +       if (ret < 0) {
>> +               dev_err(dev, "request irq failed: %d\n", ret);
>> +               return ret;
>> +       }
>> +
>> +       vip_dev->irq = irq;
>> +       data = match->data;
>> +       vip_dev->chip_id = data->chip_id;
>> +
>> +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> +       vip_dev->base_addr = devm_ioremap_resource(dev, res);
>> +
>> +       if (IS_ERR(vip_dev->base_addr))
>> +               return PTR_ERR(vip_dev->base_addr);
>> +
>> +       if (data->clks_num > RK_VIP_MAX_BUS_CLK ||
>> +               data->rsts_num > RK_VIP_MAX_RESET) {
>> +               dev_err(dev, "out of range: clks(%d %d) rsts(%d %d)\n",
>> +                       data->clks_num, RK_VIP_MAX_BUS_CLK,
>> +                       data->rsts_num, RK_VIP_MAX_RESET);
>> +               return -EINVAL;
>> +       }
>> +
>> +       for (i = 0; i < data->clks_num; i++) {
>> +               struct clk *clk = devm_clk_get(dev, data->clks[i]);
>> +
>> +               if (IS_ERR(clk)) {
>> +                       dev_err(dev, "failed to get %s\n", data->clks[i]);
>> +                       return PTR_ERR(clk);
>> +               }
>> +
>> +               vip_dev->clks[i] = clk;
>> +       }
>> +
>> +       vip_dev->clk_size = data->clks_num;
>> +
>> +       for (i = 0; i < data->rsts_num; i++) {
>> +               struct reset_control *rst =
>> +                       devm_reset_control_get(dev, data->rsts[i]);
>> +               if (IS_ERR(rst)) {
>> +                       dev_err(dev, "failed to get %s\n", data->rsts[i]);
>> +                       return PTR_ERR(rst);
>> +               }
>> +               vip_dev->vip_rst[i] = rst;
>> +       }
>> +
>> +       /* Initialize the stream */
>> +       rk_vip_stream_init(vip_dev);
>> +
>> +       strlcpy(vip_dev->media_dev.model, "rk_vip",
>> +               sizeof(vip_dev->media_dev.model));
>> +       vip_dev->media_dev.dev = &pdev->dev;
>> +       v4l2_dev = &vip_dev->v4l2_dev;
>> +       v4l2_dev->mdev = &vip_dev->media_dev;
>> +       strlcpy(v4l2_dev->name, "rk_vip", sizeof(v4l2_dev->name));
>> +       v4l2_ctrl_handler_init(&vip_dev->ctrl_handler, 8);
>> +       v4l2_dev->ctrl_handler = &vip_dev->ctrl_handler;
>> +
>> +       ret = v4l2_device_register(vip_dev->dev, &vip_dev->v4l2_dev);
>> +       if (ret < 0)
>> +               return ret;
>> +
>> +       media_device_init(&vip_dev->media_dev);
>> +
>> +       ret = media_device_register(&vip_dev->media_dev);
>> +       if (ret < 0) {
>> +               v4l2_err(v4l2_dev, "Failed to register media device: %d\n",
>> +                        ret);
>> +               goto err_unreg_v4l2_dev;
>> +       }
>> +
>> +       /* create & register platefom subdev (from of_node) */
>> +       ret = rk_vip_register_platform_subdevs(vip_dev);
>> +       if (ret < 0)
>> +               goto err_unreg_media_dev;
>> +
>> +       ret = of_reserved_mem_device_init(dev);

just curious, why is that reserved memory for?

Thanks,
Dafna

>> +       if (ret)
>> +               v4l2_warn(v4l2_dev, "No reserved memory region assign to VIP\n");
>> +
> 
> How about
> 
>          ret = of_reserved_mem_device_init(dev);
>          if (ret && ret != -ENODEV)
>                  return ret;
> 
> instead?
> 
> Also, it seems you are missing a of_reserved_mem_device_release
> on the error paths and plat_remove.
> 
> Thanks,
> Ezequiel
> 
>> +       pm_runtime_enable(&pdev->dev);
>> +
>> +       return 0;
>> +
>> +err_unreg_media_dev:
>> +       media_device_unregister(&vip_dev->media_dev);
>> +err_unreg_v4l2_dev:
>> +       v4l2_device_unregister(&vip_dev->v4l2_dev);
>> +       return ret;
>> +}
>> +
>> +static int rk_vip_plat_remove(struct platform_device *pdev)
>> +{
>> +       struct rk_vip_device *vip_dev = platform_get_drvdata(pdev);
>> +
>> +       pm_runtime_disable(&pdev->dev);
>> +
>> +       media_device_unregister(&vip_dev->media_dev);
>> +       v4l2_device_unregister(&vip_dev->v4l2_dev);
>> +       rk_vip_unregister_stream_vdev(vip_dev);
>> +
>> +       return 0;
>> +}
>> +
>> +static int __maybe_unused rk_vip_runtime_suspend(struct device *dev)
>> +{
>> +       struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
>> +
>> +       rk_vip_disable_sys_clk(vip_dev);
>> +
>> +       return pinctrl_pm_select_sleep_state(dev);
>> +}
>> +
>> +static int __maybe_unused rk_vip_runtime_resume(struct device *dev)
>> +{
>> +       struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
>> +       int ret;
>> +
>> +       ret = pinctrl_pm_select_default_state(dev);
>> +       if (ret < 0)
>> +               return ret;
>> +       rk_vip_enable_sys_clk(vip_dev);
>> +
>> +       return 0;
>> +}
>> +
>> +static const struct dev_pm_ops rk_vip_plat_pm_ops = {
>> +       SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
>> +                               pm_runtime_force_resume)
>> +       SET_RUNTIME_PM_OPS(rk_vip_runtime_suspend, rk_vip_runtime_resume, NULL)
>> +};
>> +
>> +static struct platform_driver rk_vip_plat_drv = {
>> +       .driver = {
>> +                  .name = VIP_DRIVER_NAME,
>> +                  .of_match_table = of_match_ptr(rk_vip_plat_of_match),
>> +                  .pm = &rk_vip_plat_pm_ops,
>> +       },
>> +       .probe = rk_vip_plat_probe,
>> +       .remove = rk_vip_plat_remove,
>> +};
>> +
>> +module_platform_driver(rk_vip_plat_drv);
>> +MODULE_AUTHOR("Rockchip Camera/ISP team");
>> +MODULE_DESCRIPTION("Rockchip VIP platform driver");
>> +MODULE_LICENSE("GPL");
>> diff --git a/drivers/media/platform/rockchip/vip/dev.h b/drivers/media/platform/rockchip/vip/dev.h
>> new file mode 100644
>> index 000000000000..8d803885459d
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/vip/dev.h
>> @@ -0,0 +1,206 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/*
>> + * Rockchip VIP Driver
>> + *
>> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
>> + */
>> +
>> +#ifndef _RK_VIP_DEV_H
>> +#define _RK_VIP_DEV_H
>> +
>> +#include <linux/mutex.h>
>> +#include <media/media-device.h>
>> +#include <media/media-entity.h>
>> +#include <media/v4l2-ctrls.h>
>> +#include <media/v4l2-device.h>
>> +#include <media/videobuf2-v4l2.h>
>> +
>> +#define VIP_DRIVER_NAME                "rk_vip"
>> +#define VIP_VIDEODEVICE_NAME   "stream_vip"
>> +
>> +#define RK_VIP_MAX_BUS_CLK     8
>> +#define RK_VIP_MAX_SENSOR      2
>> +#define RK_VIP_MAX_RESET               5
>> +#define RK_VIP_MAX_CSI_CHANNEL 4
>> +
>> +#define RK_VIP_DEFAULT_WIDTH   640
>> +#define RK_VIP_DEFAULT_HEIGHT  480
>> +
>> +#define write_vip_reg(base, addr, val)  writel(val, (addr) + (base))
>> +#define read_vip_reg(base, addr) readl((addr) + (base))
>> +
>> +#define write_csihost_reg(base, addr, val)  writel(val, (addr) + (base))
>> +#define read_csihost_reg(base, addr) readl((addr) + (base))
>> +
>> +enum rk_vip_state {
>> +       RK_VIP_STATE_DISABLED,
>> +       RK_VIP_STATE_READY,
>> +       RK_VIP_STATE_STREAMING
>> +};
>> +
>> +enum rk_vip_chip_id {
>> +       CHIP_PX30_VIP,
>> +       CHIP_RK1808_VIP,
>> +       CHIP_RK3128_VIP,
>> +       CHIP_RK3288_VIP
>> +};
>> +
>> +enum host_type_t {
>> +       RK_CSI_RXHOST,
>> +       RK_DSI_RXHOST
>> +};
>> +
>> +struct rk_vip_buffer {
>> +       struct vb2_v4l2_buffer vb;
>> +       struct list_head queue;
>> +       union {
>> +               u32 buff_addr[VIDEO_MAX_PLANES];
>> +               void *vaddr[VIDEO_MAX_PLANES];
>> +       };
>> +};
>> +
>> +struct rk_vip_scratch_buffer {
>> +       void *vaddr;
>> +       dma_addr_t dma_addr;
>> +       u32 size;
>> +};
>> +
>> +extern int rk_vip_debug;
>> +
>> +static inline struct rk_vip_buffer *to_rk_vip_buffer(struct vb2_v4l2_buffer *vb)
>> +{
>> +       return container_of(vb, struct rk_vip_buffer, vb);
>> +}
>> +
>> +/*
>> + * struct rk_vip_sensor_info - Sensor infomations
>> + * @mbus: media bus configuration
>> + */
>> +struct rk_vip_sensor_info {
>> +       struct v4l2_subdev *sd;
>> +       int pad;
>> +       struct v4l2_mbus_config mbus;
>> +       int lanes;
>> +};
>> +
>> +/*
>> + * struct vip_output_fmt - The output format
>> + *
>> + * @fourcc: pixel format in fourcc
>> + * @cplanes: number of colour planes
>> + * @fmt_val: the fmt val corresponding to VIP_FOR register
>> + * @bpp: bits per pixel for each cplanes
>> + */
>> +struct vip_output_fmt {
>> +       u32 fourcc;
>> +       u32 mbus;
>> +       u8 cplanes;
>> +       u32 fmt_val;
>> +       u8 bpp[VIDEO_MAX_PLANES];
>> +};
>> +
>> +enum vip_fmt_type {
>> +       VIP_FMT_TYPE_YUV = 0,
>> +       VIP_FMT_TYPE_RAW,
>> +};
>> +
>> +/*
>> + * struct vip_input_fmt - The input mbus format from sensor
>> + *
>> + * @mbus_code: mbus format
>> + * @dvp_fmt_val: the fmt val corresponding to VIP_FOR register
>> + * @csi_fmt_val: the fmt val corresponding to VIP_CSI_ID_CTRL
>> + * @field: the field type of the input from sensor
>> + */
>> +struct vip_input_fmt {
>> +       u32 mbus_code;
>> +       u32 dvp_fmt_val;
>> +       u32 csi_fmt_val;
>> +       enum vip_fmt_type fmt_type;
>> +       enum v4l2_field field;
>> +};
>> +
>> +/*
>> + * struct rk_vip_stream - Stream states TODO
>> + *
>> + * @vbq_lock: lock to protect buf_queue
>> + * @buf_queue: queued buffer list
>> + * @scratch_buf: scratch space to store dropped data
>> + *
>> + * rk_vip use shadowsock registers, so it need two buffer at a time
>> + * @curr_buf: the buffer used for current frame
>> + * @next_buf: the buffer used for next frame
>> + */
>> +struct rk_vip_stream {
>> +       struct rk_vip_device            *vipdev;
>> +       enum rk_vip_state               state;
>> +       bool                            stopping;
>> +       wait_queue_head_t               wq_stopped;
>> +       int                             frame_idx;
>> +       int                             frame_phase;
>> +
>> +       /* lock between irq and buf_queue */
>> +       spinlock_t                      vbq_lock;
>> +       struct vb2_queue                buf_queue;
>> +       struct list_head                buf_head;
>> +       struct rk_vip_scratch_buffer    scratch_buf;
>> +       struct rk_vip_buffer            *buffs[2];
>> +
>> +       /* vfd lock */
>> +       struct mutex                    vlock;
>> +       struct video_device             vdev;
>> +       /* TODO: pad for dvp and mipi separately? */
>> +       struct media_pad                pad;
>> +
>> +       const struct vip_output_fmt     *vip_fmt_out;
>> +       const struct vip_input_fmt      *vip_fmt_in;
>> +       struct v4l2_pix_format_mplane   pixm;
>> +       struct v4l2_rect                crop;
>> +       int                             crop_enable;
>> +};
>> +
>> +static inline struct rk_vip_stream *to_rk_vip_stream(struct video_device *vdev)
>> +{
>> +       return container_of(vdev, struct rk_vip_stream, vdev);
>> +}
>> +
>> +/*
>> + * struct rk_vip_device - ISP platform device
>> + * @base_addr: base register address
>> + * @active_sensor: sensor in-use, set when streaming on
>> + * @stream: capture video device
>> + */
>> +struct rk_vip_device {
>> +       struct list_head                list;
>> +       struct device                   *dev;
>> +       int                             irq;
>> +       void __iomem                    *base_addr;
>> +       void __iomem                    *csi_base;
>> +       struct clk                      *clks[RK_VIP_MAX_BUS_CLK];
>> +       int                             clk_size;
>> +       struct vb2_alloc_ctx            *alloc_ctx;
>> +       bool                            iommu_en;
>> +       struct iommu_domain             *domain;
>> +       struct reset_control            *vip_rst[RK_VIP_MAX_RESET];
>> +
>> +       struct v4l2_device              v4l2_dev;
>> +       struct media_device             media_dev;
>> +       struct v4l2_ctrl_handler        ctrl_handler;
>> +       struct v4l2_async_notifier      notifier;
>> +       struct v4l2_async_subdev        asd;
>> +       struct rk_vip_sensor_info       sensor;
>> +
>> +       struct rk_vip_stream            stream;
>> +
>> +       int                             chip_id;
>> +};
>> +
>> +void rk_vip_unregister_stream_vdev(struct rk_vip_device *dev);
>> +int rk_vip_register_stream_vdev(struct rk_vip_device *dev);
>> +void rk_vip_stream_init(struct rk_vip_device *dev);
>> +
>> +void rk_vip_irq_oneframe(struct rk_vip_device *vip_dev);
>> +void rk_vip_irq_pingpong(struct rk_vip_device *vip_dev);
>> +void rk_vip_soft_reset(struct rk_vip_device *vip_dev);
>> +
>> +#endif
>> diff --git a/drivers/media/platform/rockchip/vip/regs.h b/drivers/media/platform/rockchip/vip/regs.h
>> new file mode 100644
>> index 000000000000..cfe287ce5bf6
>> --- /dev/null
>> +++ b/drivers/media/platform/rockchip/vip/regs.h
>> @@ -0,0 +1,260 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +/*
>> + * Rockchip VIP Driver
>> + *
>> + * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
>> + */
>> +
>> +#ifndef _RK_VIP_REGS_H
>> +#define _RK_VIP_REGS_H
>> +
>> +/* VIP Reg Offset */
>> +#define VIP_CTRL                       0x00
>> +#define VIP_INTEN                      0x04
>> +#define VIP_INTSTAT                    0x08
>> +#define VIP_FOR                                0x0c
>> +#define VIP_LINE_NUM_ADDR              0x10
>> +#define VIP_FRM0_ADDR_Y                        0x14
>> +#define VIP_FRM0_ADDR_UV               0x18
>> +#define VIP_FRM1_ADDR_Y                        0x1c
>> +#define VIP_FRM1_ADDR_UV               0x20
>> +#define VIP_VIR_LINE_WIDTH             0x24
>> +#define VIP_SET_SIZE                   0x28
>> +#define VIP_SCM_ADDR_Y                 0x2c
>> +#define VIP_SCM_ADDR_U                 0x30
>> +#define VIP_SCM_ADDR_V                 0x34
>> +#define VIP_WB_UP_FILTER               0x38
>> +#define VIP_WB_LOW_FILTER              0x3c
>> +#define VIP_WBC_CNT                    0x40
>> +#define VIP_CROP                       0x44
>> +#define VIP_SCL_CTRL                   0x48
>> +#define VIP_SCL_DST                    0x4c
>> +#define VIP_SCL_FCT                    0x50
>> +#define VIP_SCL_VALID_NUM              0x54
>> +#define VIP_LINE_LOOP_CTR              0x58
>> +#define VIP_FRAME_STATUS               0x60
>> +#define VIP_CUR_DST                    0x64
>> +#define VIP_LAST_LINE                  0x68
>> +#define VIP_LAST_PIX                   0x6c
>> +
>> +/* RK1808 VIP CSI Registers Offset */
>> +#define VIP_CSI_ID0_CTRL0              0x80
>> +#define VIP_CSI_ID0_CTRL1              0x84
>> +#define VIP_CSI_ID1_CTRL0              0x88
>> +#define VIP_CSI_ID1_CTRL1              0x8c
>> +#define VIP_CSI_ID2_CTRL0              0x90
>> +#define VIP_CSI_ID2_CTRL1              0x94
>> +#define VIP_CSI_ID3_CTRL0              0x98
>> +#define VIP_CSI_ID3_CTRL1              0x9c
>> +#define VIP_CSI_WATER_LINE             0xa0
>> +#define VIP_CSI_FRM0_ADDR_Y_ID0                0xa4
>> +#define VIP_CSI_FRM1_ADDR_Y_ID0                0xa8
>> +#define VIP_CSI_FRM0_ADDR_UV_ID0       0xac
>> +#define VIP_CSI_FRM1_ADDR_UV_ID0       0xb0
>> +#define VIP_CSI_FRM0_VLW_Y_ID0         0xb4
>> +#define VIP_CSI_FRM1_VLW_Y_ID0         0xb8
>> +#define VIP_CSI_FRM0_VLW_UV_ID0                0xbc
>> +#define VIP_CSI_FRM1_VLW_UV_ID0                0xc0
>> +#define VIP_CSI_FRM0_ADDR_Y_ID1                0xc4
>> +#define VIP_CSI_FRM1_ADDR_Y_ID1                0xc8
>> +#define VIP_CSI_FRM0_ADDR_UV_ID1       0xcc
>> +#define VIP_CSI_FRM1_ADDR_UV_ID1       0xd0
>> +#define VIP_CSI_FRM0_VLW_Y_ID1         0xd4
>> +#define VIP_CSI_FRM1_VLW_Y_ID1         0xd8
>> +#define VIP_CSI_FRM0_VLW_UV_ID1                0xdc
>> +#define VIP_CSI_FRM1_VLW_UV_ID1                0xe0
>> +#define VIP_CSI_FRM0_ADDR_Y_ID2                0xe4
>> +#define VIP_CSI_FRM1_ADDR_Y_ID2                0xe8
>> +#define VIP_CSI_FRM0_ADDR_UV_ID2       0xec
>> +#define VIP_CSI_FRM1_ADDR_UV_ID2       0xf0
>> +#define VIP_CSI_FRM0_VLW_Y_ID2         0xf4
>> +#define VIP_CSI_FRM1_VLW_Y_ID2         0xf8
>> +#define VIP_CSI_FRM0_VLW_UV_ID2                0xfc
>> +#define VIP_CSI_FRM1_VLW_UV_ID2                0x100
>> +#define VIP_CSI_FRM0_ADDR_Y_ID3                0x104
>> +#define VIP_CSI_FRM1_ADDR_Y_ID3                0x108
>> +#define VIP_CSI_FRM0_ADDR_UV_ID3       0x10c
>> +#define VIP_CSI_FRM1_ADDR_UV_ID3       0x110
>> +#define VIP_CSI_FRM0_VLW_Y_ID3         0x114
>> +#define VIP_CSI_FRM1_VLW_Y_ID3         0x118
>> +#define VIP_CSI_FRM0_VLW_UV_ID3                0x11c
>> +#define VIP_CSI_FRM1_VLW_UV_ID3                0x120
>> +#define VIP_CSI_INTEN                  0x124
>> +#define VIP_CSI_INTSTAT                        0x128
>> +#define VIP_CSI_LINE_INT_NUM_ID0_1     0x12c
>> +#define VIP_CSI_LINE_INT_NUM_ID2_3     0x130
>> +#define VIP_CSI_LINE_CNT_ID0_1         0x134
>> +#define VIP_CSI_LINE_CNT_ID2_3         0x138
>> +#define VIP_CSI_ID0_CROP_START         0x13c
>> +#define VIP_CSI_ID1_CROP_START         0x140
>> +#define VIP_CSI_ID2_CROP_START         0x144
>> +#define VIP_CSI_ID3_CROP_START         0x148
>> +
>> +/* The key register bit description */
>> +
>> +/* VIP_CTRL Reg */
>> +#define VIP_CTRL_DISABLE_CAPTURE                       (0x0 << 0)
>> +#define VIP_CTRL_ENABLE_CAPTURE                        (0x1 << 0)
>> +#define VIP_CTRL_MODE_ONEFRAME                 (0x0 << 1)
>> +#define VIP_CTRL_MODE_PINGPONG                 (0x1 << 1)
>> +#define VIP_CTRL_MODE_LINELOOP                 (0x2 << 1)
>> +#define VIP_CTRL_AXI_BURST_16                  (0xF << 12)
>> +
>> +/* VIP_INTEN */
>> +#define VIP_INTEN_DISABLE                      (0x0 << 0)
>> +#define VIP_INTEN_FRAME_END_EN                 (0x1 << 0)
>> +#define VIP_INTEN_LINE_ERR_EN                  (0x1 << 2)
>> +#define VIP_INTEN_BUS_ERR_EN                   (0x1 << 6)
>> +#define VIP_INTEN_SCL_ERR_EN                   (0x1 << 7)
>> +#define VIP_INTEN_PST_INF_FRAME_END_EN         (0x1 << 9)
>> +
>> +/* VIP INTSTAT */
>> +#define VIP_INTSTAT_CLS                        (0x3FF)
>> +#define VIP_INTSTAT_FRAME_END                  (0x01 << 0)
>> +#define VIP_INTSTAT_LINE_END                   (0x01 << 1)
>> +#define VIP_INTSTAT_LINE_ERR                   (0x01 << 2)
>> +#define VIP_INTSTAT_PIX_ERR                    (0x01 << 3)
>> +#define VIP_INTSTAT_PRE_INF_FRAME_END          (0x01 << 8)
>> +#define VIP_INTSTAT_PST_INF_FRAME_END          (0x01 << 9)
>> +#define VIP_INTSTAT_FRAME_END_CLR                      (0x01 << 0)
>> +#define VIP_INTSTAT_LINE_END_CLR                       (0x01 << 1)
>> +#define VIP_INTSTAT_LINE_ERR_CLR                       (0x01 << 2)
>> +#define VIP_INTSTAT_PST_INF_FRAME_END_CLR              (0x01 << 9)
>> +#define VIP_INTSTAT_ERR                        (0xFC)
>> +
>> +/* VIP_FRAME STATUS */
>> +#define VIP_FRAME_STAT_CLS                     0x00
>> +#define VIP_FRAME_FRM0_STAT_CLS                        0x20    /* write 0 to clear frame 0 */
>> +
>> +/* VIP_FORMAT */
>> +#define VIP_FORMAT_VSY_HIGH_ACTIVE                     (0x01 << 0)
>> +#define VIP_FORMAT_VSY_LOW_ACTIVE                      (0x00 << 0)
>> +#define VIP_FORMAT_HSY_LOW_ACTIVE                      (0x01 << 1)
>> +#define VIP_FORMAT_HSY_HIGH_ACTIVE                     (0x00 << 1)
>> +#define VIP_FORMAT_INPUT_MODE_YUV                      (0x00 << 2)
>> +#define VIP_FORMAT_INPUT_MODE_PAL                      (0x02 << 2)
>> +#define VIP_FORMAT_INPUT_MODE_NTSC                     (0x03 << 2)
>> +#define VIP_FORMAT_INPUT_MODE_BT1120           (0x07 << 2)
>> +#define VIP_FORMAT_INPUT_MODE_RAW                      (0x04 << 2)
>> +#define VIP_FORMAT_INPUT_MODE_JPEG                     (0x05 << 2)
>> +#define VIP_FORMAT_INPUT_MODE_MIPI                     (0x06 << 2)
>> +#define VIP_FORMAT_YUV_INPUT_ORDER_UYVY                (0x00 << 5)
>> +#define VIP_FORMAT_YUV_INPUT_ORDER_YVYU                (0x01 << 5)
>> +#define VIP_FORMAT_YUV_INPUT_ORDER_VYUY                (0x10 << 5)
>> +#define VIP_FORMAT_YUV_INPUT_ORDER_YUYV                (0x03 << 5)
>> +#define VIP_FORMAT_YUV_INPUT_422                       (0x00 << 7)
>> +#define VIP_FORMAT_YUV_INPUT_420                       (0x01 << 7)
>> +#define VIP_FORMAT_INPUT_420_ORDER_EVEN                (0x00 << 8)
>> +#define VIP_FORMAT_INPUT_420_ORDER_ODD         (0x01 << 8)
>> +#define VIP_FORMAT_CCIR_INPUT_ORDER_ODD                (0x00 << 9)
>> +#define VIP_FORMAT_CCIR_INPUT_ORDER_EVEN               (0x01 << 9)
>> +#define VIP_FORMAT_RAW_DATA_WIDTH_8            (0x00 << 11)
>> +#define VIP_FORMAT_RAW_DATA_WIDTH_10           (0x01 << 11)
>> +#define VIP_FORMAT_RAW_DATA_WIDTH_12           (0x02 << 11)
>> +#define VIP_FORMAT_YUV_OUTPUT_422                      (0x00 << 16)
>> +#define VIP_FORMAT_YUV_OUTPUT_420                      (0x01 << 16)
>> +#define VIP_FORMAT_OUTPUT_420_ORDER_EVEN               (0x00 << 17)
>> +#define VIP_FORMAT_OUTPUT_420_ORDER_ODD                (0x01 << 17)
>> +#define VIP_FORMAT_RAWD_DATA_LITTLE_ENDIAN             (0x00 << 18)
>> +#define VIP_FORMAT_RAWD_DATA_BIG_ENDIAN                (0x01 << 18)
>> +#define VIP_FORMAT_UV_STORAGE_ORDER_UVUV               (0x00 << 19)
>> +#define VIP_FORMAT_UV_STORAGE_ORDER_VUVU               (0x01 << 19)
>> +#define VIP_FORMAT_BT1120_CLOCK_SINGLE_EDGES   (0x00 << 24)
>> +#define VIP_FORMAT_BT1120_CLOCK_DOUBLE_EDGES   (0x01 << 24)
>> +#define VIP_FORMAT_BT1120_TRANSMIT_INTERFACE   (0x00 << 25)
>> +#define VIP_FORMAT_BT1120_TRANSMIT_PROGRESS    (0x01 << 25)
>> +#define VIP_FORMAT_BT1120_YC_SWAP                      (0x01 << 26)
>> +
>> +/* VIP_SCL_CTRL */
>> +#define VIP_SCL_CTRL_ENABLE_SCL_DOWN                   (0x01 << 0)
>> +#define VIP_SCL_CTRL_DISABLE_SCL_DOWN          (0x00 << 0)
>> +#define VIP_SCL_CTRL_ENABLE_SCL_UP                     (0x01 << 1)
>> +#define VIP_SCL_CTRL_DISABLE_SCL_UP                    (0x00 << 1)
>> +#define VIP_SCL_CTRL_ENABLE_YUV_16BIT_BYPASS           (0x01 << 4)
>> +#define VIP_SCL_CTRL_DISABLE_YUV_16BIT_BYPASS  (0x00 << 4)
>> +#define VIP_SCL_CTRL_ENABLE_RAW_16BIT_BYPASS           (0x01 << 5)
>> +#define VIP_SCL_CTRL_DISABLE_RAW_16BIT_BYPASS  (0x00 << 5)
>> +#define VIP_SCL_CTRL_ENABLE_32BIT_BYPASS               (0x01 << 6)
>> +#define VIP_SCL_CTRL_DISABLE_32BIT_BYPASS              (0x00 << 6)
>> +
>> +/* VIP_INTSTAT */
>> +#define VIP_INTSTAT_F0_READY                   (0x01 << 0)
>> +#define VIP_INTSTAT_F1_READY                   (0x01 << 1)
>> +
>> +/* VIP_CROP */
>> +#define VIP_CROP_Y_SHIFT               16
>> +#define VIP_CROP_X_SHIFT               0
>> +
>> +/* VIP_CSI_ID_CTRL0 */
>> +#define VIP_CSI_DISABLE_CAPTURE                (0x0 << 0)
>> +#define VIP_CSI_ENABLE_CAPTURE         (0x1 << 0)
>> +#define VIP_CSI_WRDDR_TYPE_RAW8                (0x0 << 1)
>> +#define VIP_CSI_WRDDR_TYPE_RAW10               (0x1 << 1)
>> +#define VIP_CSI_WRDDR_TYPE_RAW12               (0x2 << 1)
>> +#define VIP_CSI_WRDDR_TYPE_RGB888              (0x3 << 1)
>> +#define VIP_CSI_WRDDR_TYPE_YUV422              (0x4 << 1)
>> +#define VIP_CSI_DISABLE_COMMAND_MODE   (0x0 << 4)
>> +#define VIP_CSI_ENABLE_COMMAND_MODE            (0x1 << 4)
>> +#define VIP_CSI_DISABLE_CROP           (0x0 << 5)
>> +#define VIP_CSI_ENABLE_CROP                    (0x1 << 5)
>> +
>> +/* VIP_CSI_INTEN */
>> +#define VIP_CSI_FRAME0_START_INTEN(id) (0x1 << ((id) * 2))
>> +#define VIP_CSI_FRAME1_START_INTEN(id) (0x1 << ((id) * 2 + 1))
>> +#define VIP_CSI_FRAME0_END_INTEN(id)   (0x1 << ((id) * 2 + 8))
>> +#define VIP_CSI_FRAME1_END_INTEN(id)   (0x1 << ((id) * 2 + 9))
>> +#define VIP_CSI_DMA_Y_FIFO_OVERFLOW_INTEN      (0x1 << 16)
>> +#define VIP_CSI_DMA_UV_FIFO_OVERFLOW_INTEN     (0x1 << 17)
>> +#define VIP_CSI_CONFIG_FIFO_OVERFLOW_INTEN     (0x1 << 18)
>> +#define VIP_CSI_BANDWIDTH_LACK_INTEN   (0x1 << 19)
>> +#define VIP_CSI_RX_FIFO_OVERFLOW_INTEN (0x1 << 20)
>> +#define VIP_CSI_ALL_FRAME_START_INTEN  (0xff << 0)
>> +#define VIP_CSI_ALL_FRAME_END_INTEN            (0xff << 8)
>> +#define VIP_CSI_ALL_ERROR_INTEN                (0x1f << 16)
>> +
>> +/* VIP_CSI_INTSTAT */
>> +#define VIP_CSI_FRAME0_START_ID0               (0x1 << 0)
>> +#define VIP_CSI_FRAME1_START_ID0               (0x1 << 1)
>> +#define VIP_CSI_FRAME0_START_ID1               (0x1 << 2)
>> +#define VIP_CSI_FRAME1_START_ID1               (0x1 << 3)
>> +#define VIP_CSI_FRAME0_START_ID2               (0x1 << 4)
>> +#define VIP_CSI_FRAME1_START_ID2               (0x1 << 5)
>> +#define VIP_CSI_FRAME0_START_ID3               (0x1 << 6)
>> +#define VIP_CSI_FRAME1_START_ID3               (0x1 << 7)
>> +#define VIP_CSI_FRAME0_END_ID0         (0x1 << 8)
>> +#define VIP_CSI_FRAME1_END_ID0         (0x1 << 9)
>> +#define VIP_CSI_FRAME0_END_ID1         (0x1 << 10)
>> +#define VIP_CSI_FRAME1_END_ID1         (0x1 << 11)
>> +#define VIP_CSI_FRAME0_END_ID2         (0x1 << 12)
>> +#define VIP_CSI_FRAME1_END_ID2         (0x1 << 13)
>> +#define VIP_CSI_FRAME0_END_ID3         (0x1 << 14)
>> +#define VIP_CSI_FRAME1_END_ID3         (0x1 << 15)
>> +#define VIP_CSI_DMA_Y_FIFO_OVERFLOW            (0x1 << 16)
>> +#define VIP_CSI_DMA_UV_FIFO_OVERFLOW   (0x1 << 17)
>> +#define VIP_CSI_CONFIG_FIFO_OVERFLOW   (0x1 << 18)
>> +#define VIP_CSI_BANDWIDTH_LACK         (0x1 << 19)
>> +#define VIP_CSI_RX_FIFO_OVERFLOW               (0x1 << 20)
>> +
>> +#define VIP_CSI_FIFO_OVERFLOW  (VIP_CSI_DMA_Y_FIFO_OVERFLOW |  \
>> +                                VIP_CSI_DMA_UV_FIFO_OVERFLOW | \
>> +                                VIP_CSI_CONFIG_FIFO_OVERFLOW | \
>> +                                VIP_CSI_RX_FIFO_OVERFLOW)
>> +
>> +/* CSI Host Registers Define */
>> +#define VIP_CSIHOST_N_LANES            0x04
>> +#define VIP_CSIHOST_PHY_RSTZ   0x0c
>> +#define VIP_CSIHOST_RESETN             0x10
>> +#define VIP_CSIHOST_ERR1               0x20
>> +#define VIP_CSIHOST_ERR2               0x24
>> +#define VIP_CSIHOST_MSK1               0x28
>> +#define VIP_CSIHOST_MSK2               0x2c
>> +#define VIP_CSIHOST_CONTROL            0x40
>> +
>> +#define VIP_SW_CPHY_EN(x)              ((x) << 0)
>> +#define VIP_SW_DSI_EN(x)               ((x) << 4)
>> +#define VIP_SW_DATATYPE_FS(x)  ((x) << 8)
>> +#define VIP_SW_DATATYPE_FE(x)  ((x) << 14)
>> +#define VIP_SW_DATATYPE_LS(x)  ((x) << 20)
>> +#define VIP_SW_DATATYPE_LE(x)  ((x) << 26)
>> +
>> +#endif
>> --
>> 2.25.4
>>
diff mbox series

Patch

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index c57ee78fa99d..5bc67a0bdd69 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -461,6 +461,19 @@  config VIDEO_ROCKCHIP_RGA
 
 	  To compile this driver as a module choose m here.
 
+config VIDEO_ROCKCHIP_VIP
+	tristate "Rockchip VIP (Video InPut) Camera Interface"
+	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on ARCH_ROCKCHIP || COMPILE_TEST
+	select VIDEOBUF2_DMA_SG
+	select VIDEOBUF2_DMA_CONTIG
+	select V4L2_FWNODE
+	select V4L2_MEM2MEM_DEV
+	help
+	  This is a v4l2 driver for Rockchip SOC Camera interface.
+
+	  To compile this driver as a module choose m here.
+
 config VIDEO_TI_VPE
 	tristate "TI VPE (Video Processing Engine) driver"
 	depends on VIDEO_DEV && VIDEO_V4L2
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 62b6cdc8c730..d056f5618c2b 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -53,6 +53,7 @@  obj-$(CONFIG_VIDEO_RENESAS_JPU)		+= rcar_jpu.o
 obj-$(CONFIG_VIDEO_RENESAS_VSP1)	+= vsp1/
 
 obj-$(CONFIG_VIDEO_ROCKCHIP_RGA)	+= rockchip/rga/
+obj-$(CONFIG_VIDEO_ROCKCHIP_VIP)	+= rockchip/vip/
 
 obj-y	+= omap/
 
diff --git a/drivers/media/platform/rockchip/vip/Makefile b/drivers/media/platform/rockchip/vip/Makefile
new file mode 100644
index 000000000000..c239ee0bb0fe
--- /dev/null
+++ b/drivers/media/platform/rockchip/vip/Makefile
@@ -0,0 +1,3 @@ 
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_VIDEO_ROCKCHIP_VIP) += video_rkvip.o
+video_rkvip-objs += dev.o capture.o
diff --git a/drivers/media/platform/rockchip/vip/capture.c b/drivers/media/platform/rockchip/vip/capture.c
new file mode 100644
index 000000000000..6f8e1184695c
--- /dev/null
+++ b/drivers/media/platform/rockchip/vip/capture.c
@@ -0,0 +1,1246 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Rockchip VIP Camera Interface Driver
+ *
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
+ * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mc.h>
+#include <media/v4l2-subdev.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "dev.h"
+#include "regs.h"
+
+#define VIP_REQ_BUFS_MIN	1
+#define VIP_MIN_WIDTH		64
+#define VIP_MIN_HEIGHT		64
+#define VIP_MAX_WIDTH		8192
+#define VIP_MAX_HEIGHT		8192
+
+#define RK_VIP_PLANE_Y			0
+#define RK_VIP_PLANE_CBCR		1
+
+#define VIP_FETCH_Y_LAST_LINE(VAL) ((VAL) & 0x1fff)
+/* Check if swap y and c in bt1120 mode */
+#define VIP_FETCH_IS_Y_FIRST(VAL) ((VAL) & 0xf)
+
+/* Get xsubs and ysubs for fourcc formats
+ *
+ * @xsubs: horizontal color samples in a 4*4 matrix, for yuv
+ * @ysubs: vertical color samples in a 4*4 matrix, for yuv
+ */
+static int fcc_xysubs(u32 fcc, u32 *xsubs, u32 *ysubs)
+{
+	switch (fcc) {
+	case V4L2_PIX_FMT_NV16:
+	case V4L2_PIX_FMT_NV61:
+		*xsubs = 2;
+		*ysubs = 1;
+		break;
+	case V4L2_PIX_FMT_NV21:
+	case V4L2_PIX_FMT_NV12:
+		*xsubs = 2;
+		*ysubs = 2;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct vip_output_fmt out_fmts[] = {
+	{
+		.fourcc = V4L2_PIX_FMT_NV16,
+		.cplanes = 2,
+		.fmt_val = VIP_FORMAT_YUV_OUTPUT_422 |
+			   VIP_FORMAT_UV_STORAGE_ORDER_UVUV,
+		.bpp = { 8, 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_NV61,
+		.fmt_val = VIP_FORMAT_YUV_OUTPUT_422 |
+			   VIP_FORMAT_UV_STORAGE_ORDER_VUVU,
+		.cplanes = 2,
+		.bpp = { 8, 16 },
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_NV12,
+		.fmt_val = VIP_FORMAT_YUV_OUTPUT_420 |
+			   VIP_FORMAT_UV_STORAGE_ORDER_UVUV,
+		.cplanes = 2,
+		.bpp = { 8, 16 },
+		.mbus = MEDIA_BUS_FMT_UYVY8_2X8,
+	},
+	{
+		.fourcc = V4L2_PIX_FMT_NV21,
+		.fmt_val = VIP_FORMAT_YUV_OUTPUT_420 |
+			   VIP_FORMAT_UV_STORAGE_ORDER_VUVU,
+		.cplanes = 2,
+		.bpp = { 8, 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_RGB24,
+		.cplanes = 1,
+		.bpp = { 24 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_RGB565,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_BGR666,
+		.cplanes = 1,
+		.bpp = { 18 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SRGGB8,
+		.cplanes = 1,
+		.bpp = { 8 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SGRBG8,
+		.cplanes = 1,
+		.bpp = { 8 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SGBRG8,
+		.cplanes = 1,
+		.bpp = { 8 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SBGGR8,
+		.cplanes = 1,
+		.bpp = { 8 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SRGGB10,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SGRBG10,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SGBRG10,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SBGGR10,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SRGGB12,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SGRBG12,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SGBRG12,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SBGGR12,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_SBGGR16,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}, {
+		.fourcc = V4L2_PIX_FMT_Y16,
+		.cplanes = 1,
+		.bpp = { 16 },
+	}
+};
+
+static const struct vip_input_fmt in_fmts[] = {
+	{
+		.mbus_code	= MEDIA_BUS_FMT_YUYV8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_YUYV,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_YUYV8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_YUYV,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_INTERLACED,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_YVYU8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_YVYU,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_YVYU8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_YVYU,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_INTERLACED,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_UYVY8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_UYVY,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_UYVY8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_UYVY,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_INTERLACED,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_VYUY8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_VYUY,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_VYUY8_2X8,
+		.dvp_fmt_val	= VIP_FORMAT_YUV_INPUT_422 |
+				  VIP_FORMAT_YUV_INPUT_ORDER_VYUY,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_YUV422,
+		.fmt_type	= VIP_FMT_TYPE_YUV,
+		.field		= V4L2_FIELD_INTERLACED,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR8_1X8,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_8,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW8,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG8_1X8,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_8,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW8,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG8_1X8,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_8,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW8,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB8_1X8,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_8,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW8,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR10_1X10,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_10,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW10,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG10_1X10,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_10,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW10,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG10_1X10,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_10,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW10,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB10_1X10,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_10,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW10,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SBGGR12_1X12,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_12,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW12,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SGBRG12_1X12,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_12,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW12,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SGRBG12_1X12,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_12,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW12,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_SRGGB12_1X12,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_12,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW12,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_RGB888_1X24,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RGB888,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_Y8_1X8,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_8,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW8,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_Y10_1X10,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_10,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW10,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}, {
+		.mbus_code	= MEDIA_BUS_FMT_Y12_1X12,
+		.dvp_fmt_val	= VIP_FORMAT_INPUT_MODE_RAW |
+				  VIP_FORMAT_RAW_DATA_WIDTH_12,
+		.csi_fmt_val	= VIP_CSI_WRDDR_TYPE_RAW12,
+		.fmt_type	= VIP_FMT_TYPE_RAW,
+		.field		= V4L2_FIELD_NONE,
+	}
+};
+
+static const struct
+vip_input_fmt *get_input_fmt(struct v4l2_subdev *sd)
+{
+	struct v4l2_subdev_format fmt;
+	int ret;
+	u32 i;
+
+	fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+	fmt.pad = 0;
+	ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt);
+	if (ret < 0) {
+		v4l2_warn(sd->v4l2_dev,
+			  "sensor fmt invalid, set to default size\n");
+		goto set_default;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(in_fmts); i++)
+		if (fmt.format.code == in_fmts[i].mbus_code &&
+		    fmt.format.field == in_fmts[i].field)
+			return &in_fmts[i];
+
+	v4l2_err(sd->v4l2_dev, "remote sensor mbus code not supported\n");
+
+set_default:
+	return NULL;
+}
+
+static const struct
+vip_output_fmt *find_output_fmt(struct rk_vip_stream *stream, u32 pixelfmt)
+{
+	const struct vip_output_fmt *fmt;
+	u32 i;
+
+	for (i = 0; i < ARRAY_SIZE(out_fmts); i++) {
+		fmt = &out_fmts[i];
+		if (fmt->fourcc == pixelfmt)
+			return fmt;
+	}
+
+	return NULL;
+}
+
+static void rk_vip_setup_buffers(struct rk_vip_stream *stream)
+{
+	struct rk_vip_device *dev = stream->vipdev;
+	void __iomem *base = dev->base_addr;
+
+	write_vip_reg(base, VIP_FRM0_ADDR_Y, stream->buffs[0]->buff_addr[RK_VIP_PLANE_Y]);
+	write_vip_reg(base, VIP_FRM0_ADDR_UV, stream->buffs[0]->buff_addr[RK_VIP_PLANE_CBCR]);
+
+	write_vip_reg(base, VIP_FRM1_ADDR_Y, stream->buffs[1]->buff_addr[RK_VIP_PLANE_Y]);
+	write_vip_reg(base, VIP_FRM1_ADDR_UV, stream->buffs[1]->buff_addr[RK_VIP_PLANE_CBCR]);
+}
+
+static struct rk_vip_buffer *rk_vip_buffer_next(struct rk_vip_stream *stream)
+{
+	struct rk_vip_buffer *buff;
+
+	if (list_empty(&stream->buf_head))
+		return NULL;
+
+	buff = list_first_entry(&stream->buf_head, struct rk_vip_buffer, queue);
+	list_del(&buff->queue);
+
+	return buff;
+}
+
+static void rk_vip_init_buffers(struct rk_vip_stream *stream)
+{
+	spin_lock(&stream->vbq_lock);
+
+	stream->buffs[0] = rk_vip_buffer_next(stream);
+	stream->buffs[1] = rk_vip_buffer_next(stream);
+
+	spin_unlock(&stream->vbq_lock);
+
+	rk_vip_setup_buffers(stream);
+}
+
+static void rk_vip_assign_new_buffer_pingpong(struct rk_vip_stream *stream)
+{
+	struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
+	struct rk_vip_device *dev = stream->vipdev;
+	struct rk_vip_buffer *buffer = NULL;
+	void __iomem *base = dev->base_addr;
+	u32 frm_addr_y, frm_addr_uv;
+
+	/* Set up an empty buffer for the next frame */
+	spin_lock(&stream->vbq_lock);
+
+	buffer = rk_vip_buffer_next(stream);
+	stream->buffs[stream->frame_phase] = buffer;
+
+	spin_unlock(&stream->vbq_lock);
+
+	frm_addr_y = stream->frame_phase ? VIP_FRM1_ADDR_Y : VIP_FRM0_ADDR_Y;
+	frm_addr_uv = stream->frame_phase ? VIP_FRM1_ADDR_UV : VIP_FRM0_ADDR_UV;
+
+	if (buffer) {
+		write_vip_reg(base, frm_addr_y,
+			      buffer->buff_addr[RK_VIP_PLANE_Y]);
+		write_vip_reg(base, frm_addr_uv,
+			      buffer->buff_addr[RK_VIP_PLANE_CBCR]);
+	} else {
+		write_vip_reg(base, frm_addr_y, scratch_buf->dma_addr);
+		write_vip_reg(base, frm_addr_uv, scratch_buf->dma_addr);
+	}
+}
+
+static void rk_vip_stream_stop(struct rk_vip_stream *stream)
+{
+	struct rk_vip_device *vip_dev = stream->vipdev;
+	void __iomem *base = vip_dev->base_addr;
+	u32 val;
+
+	val = read_vip_reg(base, VIP_CTRL);
+	write_vip_reg(base, VIP_CTRL, val & (~VIP_CTRL_ENABLE_CAPTURE));
+	write_vip_reg(base, VIP_INTEN, 0x0);
+	write_vip_reg(base, VIP_INTSTAT, 0x3ff);
+	write_vip_reg(base, VIP_FRAME_STATUS, 0x0);
+
+	stream->state = RK_VIP_STATE_READY;
+}
+
+static int rk_vip_queue_setup(struct vb2_queue *queue,
+			      unsigned int *num_buffers,
+			      unsigned int *num_planes,
+			      unsigned int sizes[],
+			      struct device *alloc_devs[])
+{
+	struct rk_vip_stream *stream = queue->drv_priv;
+	const struct v4l2_plane_pix_format *plane_fmt;
+	const struct v4l2_pix_format_mplane *pixm;
+	const struct vip_output_fmt *vip_fmt;
+
+	pixm = &stream->pixm;
+	vip_fmt = stream->vip_fmt_out;
+
+	if (*num_planes) {
+		if (*num_planes != 1)
+			return -EINVAL;
+
+		if (sizes[0] < pixm->plane_fmt[0].sizeimage)
+			return -EINVAL;
+		return 0;
+	}
+
+	*num_planes = 1;
+
+	plane_fmt = &pixm->plane_fmt[0];
+	sizes[0] = plane_fmt->sizeimage;
+
+	*num_buffers = 5;
+
+	return 0;
+}
+
+static void rk_vip_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct rk_vip_buffer *vipbuf = to_rk_vip_buffer(vbuf);
+	struct vb2_queue *queue = vb->vb2_queue;
+	struct rk_vip_stream *stream = queue->drv_priv;
+	struct v4l2_pix_format_mplane *pixm = &stream->pixm;
+	const struct vip_output_fmt *fmt = stream->vip_fmt_out;
+	unsigned long lock_flags = 0;
+	int i;
+
+	memset(vipbuf->buff_addr, 0, sizeof(vipbuf->buff_addr));
+
+	vipbuf->buff_addr[0] = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+	for (i = 0; i < fmt->cplanes - 1; i++)
+		vipbuf->buff_addr[i + 1] = vipbuf->buff_addr[i] +
+			pixm->plane_fmt[i].bytesperline * pixm->height;
+
+	spin_lock_irqsave(&stream->vbq_lock, lock_flags);
+	list_add_tail(&vipbuf->queue, &stream->buf_head);
+	spin_unlock_irqrestore(&stream->vbq_lock, lock_flags);
+}
+
+static int rk_vip_create_scratch_buf(struct rk_vip_stream *stream)
+{
+	struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
+	struct rk_vip_device *dev = stream->vipdev;
+
+	/* get a maximum plane size */
+	scratch_buf->size = max(stream->pixm.plane_fmt[0].sizeimage,
+				stream->pixm.plane_fmt[1].sizeimage);
+
+	scratch_buf->vaddr = dma_alloc_coherent(dev->dev, scratch_buf->size,
+						&scratch_buf->dma_addr,
+						GFP_KERNEL);
+	if (!scratch_buf->vaddr) {
+		v4l2_err(&dev->v4l2_dev,
+			 "Failed to allocate the memory for scratch buffer\n");
+		return -ENOMEM;
+	}
+
+	v4l2_info(&dev->v4l2_dev, "Allocate scratch buffer, size: 0x%08x\n",
+		  scratch_buf->size);
+
+	return 0;
+}
+
+static void rk_vip_destroy_scratch_buf(struct rk_vip_stream *stream)
+{
+	struct rk_vip_scratch_buffer *scratch_buf = &stream->scratch_buf;
+	struct rk_vip_device *dev = stream->vipdev;
+
+	dma_free_coherent(dev->dev, scratch_buf->size,
+			  scratch_buf->vaddr, scratch_buf->dma_addr);
+}
+
+static void rk_vip_stop_streaming(struct vb2_queue *queue)
+{
+	struct rk_vip_stream *stream = queue->drv_priv;
+	struct rk_vip_device *dev = stream->vipdev;
+	struct rk_vip_buffer *buf;
+	struct v4l2_subdev *sd;
+	int ret;
+
+	stream->stopping = true;
+	ret = wait_event_timeout(stream->wq_stopped,
+				 stream->state != RK_VIP_STATE_STREAMING,
+				 msecs_to_jiffies(1000));
+	if (!ret) {
+		rk_vip_stream_stop(stream);
+		stream->stopping = false;
+	}
+	pm_runtime_put(dev->dev);
+
+	/* stop the sub device*/
+	sd = dev->sensor.sd;
+	v4l2_subdev_call(sd, video, s_stream, 0);
+	v4l2_subdev_call(sd, core, s_power, 0);
+
+	/* release buffers */
+	if (stream->buffs[0]) {
+		list_add_tail(&stream->buffs[0]->queue, &stream->buf_head);
+		stream->buffs[0] = NULL;
+	}
+	if (stream->buffs[1]) {
+		list_add_tail(&stream->buffs[1]->queue, &stream->buf_head);
+		stream->buffs[1] = NULL;
+	}
+
+	while (!list_empty(&stream->buf_head)) {
+		buf = rk_vip_buffer_next(stream);
+		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
+	}
+
+	rk_vip_destroy_scratch_buf(stream);
+}
+
+static u32 rk_vip_determine_input_mode(struct rk_vip_device *dev)
+{
+	struct rk_vip_sensor_info *sensor_info = &dev->sensor;
+	struct rk_vip_stream *stream = &dev->stream;
+	v4l2_std_id std;
+	u32 mode = VIP_FORMAT_INPUT_MODE_YUV;
+	int ret;
+
+	ret = v4l2_subdev_call(sensor_info->sd, video, querystd, &std);
+	if (ret == 0) {
+		/* retrieve std from sensor if exist */
+		switch (std) {
+		case 0:
+			break;
+		case V4L2_STD_NTSC:
+			mode = VIP_FORMAT_INPUT_MODE_NTSC;
+			break;
+		case V4L2_STD_PAL:
+			mode = VIP_FORMAT_INPUT_MODE_PAL;
+			break;
+		case V4L2_STD_ATSC:
+			mode = VIP_FORMAT_INPUT_MODE_BT1120;
+			break;
+		default:
+			v4l2_err(&dev->v4l2_dev,
+				 "std: %lld is not supported", std);
+		}
+	} else {
+		/* determine input mode by mbus_code (fmt_type) */
+		switch (stream->vip_fmt_in->fmt_type) {
+		case VIP_FMT_TYPE_YUV:
+			mode = VIP_FORMAT_INPUT_MODE_YUV;
+			break;
+		case VIP_FMT_TYPE_RAW:
+			mode = VIP_FORMAT_INPUT_MODE_RAW;
+			break;
+		}
+	}
+
+	return mode;
+}
+
+static inline u32 rk_vip_scl_ctl(struct rk_vip_stream *stream)
+{
+	u32 fmt_type = stream->vip_fmt_in->fmt_type;
+
+	return (fmt_type == VIP_FMT_TYPE_YUV) ?
+		VIP_SCL_CTRL_ENABLE_YUV_16BIT_BYPASS :
+		VIP_SCL_CTRL_ENABLE_RAW_16BIT_BYPASS;
+}
+
+static int rk_vip_stream_start(struct rk_vip_stream *stream)
+{
+	u32 val, mbus_flags, href_pol, vsync_pol,
+	    xfer_mode = 0, yc_swap = 0, skip_top = 0;
+	struct rk_vip_device *dev = stream->vipdev;
+	struct rk_vip_sensor_info *sensor_info;
+	void __iomem *base = dev->base_addr;
+
+	sensor_info = &dev->sensor;
+	stream->frame_idx = 0;
+
+	mbus_flags = sensor_info->mbus.flags;
+	href_pol = (mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) ?
+			VIP_FORMAT_HSY_HIGH_ACTIVE : VIP_FORMAT_HSY_LOW_ACTIVE;
+	vsync_pol = (mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) ?
+			VIP_FORMAT_VSY_HIGH_ACTIVE : VIP_FORMAT_VSY_LOW_ACTIVE;
+
+	if (rk_vip_determine_input_mode(dev) == VIP_FORMAT_INPUT_MODE_BT1120) {
+		if (stream->vip_fmt_in->field == V4L2_FIELD_NONE)
+			xfer_mode = VIP_FORMAT_BT1120_TRANSMIT_PROGRESS;
+		else
+			xfer_mode = VIP_FORMAT_BT1120_TRANSMIT_INTERFACE;
+
+		if (!VIP_FETCH_IS_Y_FIRST(stream->vip_fmt_in->dvp_fmt_val))
+			yc_swap = VIP_FORMAT_BT1120_YC_SWAP;
+	}
+
+	val = vsync_pol | href_pol | rk_vip_determine_input_mode(dev) |
+	      stream->vip_fmt_out->fmt_val | stream->vip_fmt_in->dvp_fmt_val |
+	      xfer_mode | yc_swap;
+	write_vip_reg(base, VIP_FOR, val);
+	val = stream->pixm.width;
+	if (stream->vip_fmt_in->fmt_type == VIP_FMT_TYPE_RAW)
+		val = stream->pixm.width * 2;
+	write_vip_reg(base, VIP_VIR_LINE_WIDTH, val);
+	write_vip_reg(base, VIP_SET_SIZE,
+		      stream->pixm.width | (stream->pixm.height << 16));
+
+	v4l2_subdev_call(sensor_info->sd, sensor, g_skip_top_lines, &skip_top);
+
+	write_vip_reg(base, VIP_CROP, skip_top << VIP_CROP_Y_SHIFT);
+	write_vip_reg(base, VIP_FRAME_STATUS, VIP_FRAME_STAT_CLS);
+	write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_CLS);
+	write_vip_reg(base, VIP_SCL_CTRL, rk_vip_scl_ctl(stream));
+
+	rk_vip_init_buffers(stream);
+
+	write_vip_reg(base, VIP_INTEN, VIP_INTEN_FRAME_END_EN |
+				       VIP_INTEN_LINE_ERR_EN |
+				       VIP_INTEN_PST_INF_FRAME_END_EN);
+
+	write_vip_reg(base, VIP_CTRL, VIP_CTRL_AXI_BURST_16 |
+				      VIP_CTRL_MODE_PINGPONG |
+				      VIP_CTRL_ENABLE_CAPTURE);
+
+	stream->state = RK_VIP_STATE_STREAMING;
+
+	return 0;
+}
+
+static int rk_vip_start_streaming(struct vb2_queue *queue, unsigned int count)
+{
+	struct rk_vip_stream *stream = queue->drv_priv;
+	struct rk_vip_device *dev = stream->vipdev;
+	struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+	struct v4l2_subdev *sd;
+	int ret;
+
+	if (WARN_ON(stream->state != RK_VIP_STATE_READY)) {
+		ret = -EBUSY;
+		v4l2_err(v4l2_dev, "stream in busy state\n");
+		goto destroy_buf;
+	}
+
+	stream->vip_fmt_in = get_input_fmt(dev->sensor.sd);
+
+	ret = rk_vip_create_scratch_buf(stream);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "Failed to create scratch_buf, %d\n", ret);
+		goto destroy_buf;
+	}
+
+	ret = pm_runtime_get_sync(dev->dev);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "Failed to get runtime pm, %d\n", ret);
+		goto destroy_scratch_buf;
+	}
+
+	/* start sub-devices */
+	sd = dev->sensor.sd;
+	ret = v4l2_subdev_call(sd, core, s_power, 1);
+	if (ret < 0 && ret != -ENOIOCTLCMD)
+		goto runtime_put;
+	ret = v4l2_subdev_call(sd, video, s_stream, 1);
+	if (ret < 0)
+		goto subdev_poweroff;
+
+	ret = rk_vip_stream_start(stream);
+	if (ret < 0)
+		goto stop_stream;
+
+	return 0;
+
+stop_stream:
+	rk_vip_stream_stop(stream);
+subdev_poweroff:
+	v4l2_subdev_call(sd, core, s_power, 0);
+runtime_put:
+	pm_runtime_put(dev->dev);
+destroy_scratch_buf:
+	rk_vip_destroy_scratch_buf(stream);
+destroy_buf:
+	while (!list_empty(&stream->buf_head)) {
+		struct rk_vip_buffer *buf;
+
+		buf = rk_vip_buffer_next(stream);
+		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+	}
+
+	return ret;
+}
+
+static struct vb2_ops rk_vip_vb2_ops = {
+	.queue_setup = rk_vip_queue_setup,
+	.buf_queue = rk_vip_buf_queue,
+	.wait_prepare = vb2_ops_wait_prepare,
+	.wait_finish = vb2_ops_wait_finish,
+	.stop_streaming = rk_vip_stop_streaming,
+	.start_streaming = rk_vip_start_streaming,
+};
+
+static int rk_vip_init_vb2_queue(struct vb2_queue *q,
+				 struct rk_vip_stream *stream,
+				 enum v4l2_buf_type buf_type)
+{
+	q->type = buf_type;
+	q->io_modes = VB2_MMAP | VB2_DMABUF;
+	q->drv_priv = stream;
+	q->ops = &rk_vip_vb2_ops;
+	q->mem_ops = &vb2_dma_contig_memops;
+	q->buf_struct_size = sizeof(struct rk_vip_buffer);
+	q->min_buffers_needed = VIP_REQ_BUFS_MIN;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	q->lock = &stream->vlock;
+	q->dev = stream->vipdev->dev;
+
+	return vb2_queue_init(q);
+}
+
+static void rk_vip_set_fmt(struct rk_vip_stream *stream,
+			   struct v4l2_pix_format_mplane *pixm,
+			   bool try)
+{
+	struct rk_vip_device *dev = stream->vipdev;
+	struct v4l2_subdev_format sd_fmt;
+	const struct vip_output_fmt *fmt;
+	struct v4l2_rect input_rect;
+	unsigned int planes, imagesize = 0;
+	u32 xsubs = 1, ysubs = 1;
+	int i;
+
+	fmt = find_output_fmt(stream, pixm->pixelformat);
+	if (!fmt)
+		fmt = &out_fmts[0];
+
+	if (!try) {
+		sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+		sd_fmt.pad = 0;
+		sd_fmt.format.width = pixm->width;
+		sd_fmt.format.height = pixm->height;
+		v4l2_subdev_call(dev->sensor.sd, pad, set_fmt, NULL, &sd_fmt);
+
+		pixm->width = sd_fmt.format.width;
+		pixm->height = sd_fmt.format.height;
+	}
+
+	input_rect.width = VIP_MAX_WIDTH;
+	input_rect.height = VIP_MAX_HEIGHT;
+
+	pixm->width = clamp_t(u32, pixm->width,
+			      VIP_MIN_WIDTH, input_rect.width);
+	pixm->height = clamp_t(u32, pixm->height,
+			       VIP_MIN_HEIGHT, input_rect.height);
+
+	pixm->num_planes = 1;
+	pixm->quantization = V4L2_QUANTIZATION_DEFAULT;
+	pixm->colorspace = V4L2_COLORSPACE_SRGB;
+
+	pixm->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pixm->colorspace);
+	pixm->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pixm->colorspace);
+
+	pixm->pixelformat = fmt->fourcc;
+	pixm->field = V4L2_FIELD_NONE;
+
+	/* calculate plane size and image size */
+	fcc_xysubs(fmt->fourcc, &xsubs, &ysubs);
+
+	planes = fmt->cplanes ? fmt->cplanes : 1;
+
+	for (i = 0; i < planes; i++) {
+		struct v4l2_plane_pix_format *plane_fmt;
+		int width, height, bpl, size;
+
+		if (i == 0) {
+			width = pixm->width;
+			height = pixm->height;
+		} else {
+			width = pixm->width / xsubs;
+			height = pixm->height / ysubs;
+		}
+
+		bpl = width * fmt->bpp[i] / 8;
+		size = bpl * height;
+		imagesize += size;
+
+		if (i == 0) {
+			/* Set bpl and size for each mplane */
+			plane_fmt = pixm->plane_fmt;
+			plane_fmt->bytesperline = bpl;
+			plane_fmt->sizeimage = size;
+		}
+	}
+
+	pixm->plane_fmt[0].sizeimage = imagesize;
+
+	if (!try) {
+		stream->vip_fmt_out = fmt;
+		stream->pixm = *pixm;
+	}
+}
+
+void rk_vip_stream_init(struct rk_vip_device *dev)
+{
+	struct rk_vip_stream *stream = &dev->stream;
+	struct v4l2_pix_format_mplane pixm;
+
+	memset(stream, 0, sizeof(*stream));
+	memset(&pixm, 0, sizeof(pixm));
+	stream->vipdev = dev;
+
+	INIT_LIST_HEAD(&stream->buf_head);
+	spin_lock_init(&stream->vbq_lock);
+	stream->state = RK_VIP_STATE_READY;
+	init_waitqueue_head(&stream->wq_stopped);
+
+	/* Set default format */
+	pixm.pixelformat = V4L2_PIX_FMT_NV12;
+	pixm.width = RK_VIP_DEFAULT_WIDTH;
+	pixm.height = RK_VIP_DEFAULT_HEIGHT;
+	rk_vip_set_fmt(stream, &pixm, false);
+
+	stream->crop.left = 0;
+	stream->crop.top = 0;
+	stream->crop.width = 10;
+	stream->crop.height = 10;
+}
+
+static const struct v4l2_file_operations rk_vip_fops = {
+	.open = v4l2_fh_open,
+	.release = vb2_fop_release,
+	.unlocked_ioctl = video_ioctl2,
+	.poll = vb2_fop_poll,
+	.mmap = vb2_fop_mmap,
+};
+
+static int rk_vip_enum_input(struct file *file, void *priv,
+			     struct v4l2_input *input)
+{
+	if (input->index > 0)
+		return -EINVAL;
+
+	input->type = V4L2_INPUT_TYPE_CAMERA;
+	strlcpy(input->name, "Camera", sizeof(input->name));
+
+	return 0;
+}
+
+static int rk_vip_try_fmt_vid_cap_mplane(struct file *file, void *fh,
+					 struct v4l2_format *f)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+
+	rk_vip_set_fmt(stream, &f->fmt.pix_mp, true);
+
+	return 0;
+}
+
+static int rk_vip_enum_fmt_vid_cap(struct file *file, void *priv,
+				   struct v4l2_fmtdesc *f)
+{
+	const struct vip_output_fmt *fmt = NULL;
+
+	if (f->index >= ARRAY_SIZE(out_fmts))
+		return -EINVAL;
+
+	fmt = &out_fmts[f->index];
+	f->pixelformat = fmt->fourcc;
+
+	return 0;
+}
+
+static int rk_vip_s_fmt_vid_cap_mplane(struct file *file,
+				       void *priv, struct v4l2_format *f)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+
+	rk_vip_set_fmt(stream, &f->fmt.pix_mp, false);
+
+	return 0;
+}
+
+static int rk_vip_g_fmt_vid_cap_mplane(struct file *file, void *fh,
+				       struct v4l2_format *f)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+
+	f->fmt.pix_mp = stream->pixm;
+
+	return 0;
+}
+
+static int rk_vip_querycap(struct file *file, void *priv,
+			   struct v4l2_capability *cap)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+	struct device *dev = stream->vipdev->dev;
+
+	strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
+	strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
+	snprintf(cap->bus_info, sizeof(cap->bus_info),
+		 "platform:%s", dev_name(dev));
+
+	return 0;
+}
+
+static int rk_vip_enum_framesizes(struct file *file, void *fh,
+				  struct v4l2_frmsizeenum *fsize)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+	struct rk_vip_device *dev = stream->vipdev;
+	struct v4l2_subdev_frame_size_enum fse = {
+		.index = fsize->index,
+		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+	};
+	const struct vip_output_fmt *fmt;
+	int ret;
+
+	if (!dev->sensor.sd)
+		return -EINVAL;
+
+	fmt = find_output_fmt(stream, fsize->pixel_format);
+	if (!fmt)
+		return -EINVAL;
+
+	fse.code = fmt->mbus;
+
+	ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_size,
+			       NULL, &fse);
+	if (ret)
+		return ret;
+
+	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+	fsize->discrete.width = fse.max_width;
+	fsize->discrete.height = fse.max_height;
+
+	return 0;
+}
+
+static int rk_vip_enum_frameintervals(struct file *file, void *fh,
+				      struct v4l2_frmivalenum *fival)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+	struct rk_vip_device *dev = stream->vipdev;
+	struct v4l2_subdev_frame_interval_enum fie = {
+		.index = fival->index,
+		.width = fival->width,
+		.height = fival->height,
+		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+	};
+	const struct vip_output_fmt *fmt;
+	int ret;
+
+	if (!dev->sensor.sd)
+		return -EINVAL;
+
+	fmt = find_output_fmt(stream, fival->pixel_format);
+	if (!fmt)
+		return -EINVAL;
+
+	fie.code = fmt->mbus;
+
+	ret = v4l2_subdev_call(dev->sensor.sd, pad, enum_frame_interval,
+			       NULL, &fie);
+	if (ret)
+		return ret;
+
+	fival->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+	fival->discrete = fie.interval;
+
+	return 0;
+}
+
+static int rk_vip_g_input(struct file *file, void *fh, unsigned int *i)
+{
+	*i = 0;
+	return 0;
+}
+
+static int rk_vip_s_input(struct file *file, void *fh, unsigned int i)
+{
+	if (i)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int rk_vip_g_parm(struct file *file, void *priv,
+			 struct v4l2_streamparm *p)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+	struct rk_vip_device *dev = stream->vipdev;
+
+	return v4l2_g_parm_cap(video_devdata(file), dev->sensor.sd, p);
+}
+
+static int rk_vip_s_parm(struct file *file, void *priv,
+			 struct v4l2_streamparm *p)
+{
+	struct rk_vip_stream *stream = video_drvdata(file);
+	struct rk_vip_device *dev = stream->vipdev;
+
+	return v4l2_s_parm_cap(video_devdata(file), dev->sensor.sd, p);
+}
+
+static const struct v4l2_ioctl_ops rk_vip_v4l2_ioctl_ops = {
+	.vidioc_reqbufs = vb2_ioctl_reqbufs,
+	.vidioc_querybuf = vb2_ioctl_querybuf,
+	.vidioc_create_bufs = vb2_ioctl_create_bufs,
+	.vidioc_qbuf = vb2_ioctl_qbuf,
+	.vidioc_expbuf = vb2_ioctl_expbuf,
+	.vidioc_dqbuf = vb2_ioctl_dqbuf,
+	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+	.vidioc_streamon = vb2_ioctl_streamon,
+	.vidioc_streamoff = vb2_ioctl_streamoff,
+
+	.vidioc_enum_fmt_vid_cap = rk_vip_enum_fmt_vid_cap,
+	.vidioc_try_fmt_vid_cap_mplane = rk_vip_try_fmt_vid_cap_mplane,
+	.vidioc_s_fmt_vid_cap_mplane = rk_vip_s_fmt_vid_cap_mplane,
+	.vidioc_g_fmt_vid_cap_mplane = rk_vip_g_fmt_vid_cap_mplane,
+	.vidioc_querycap = rk_vip_querycap,
+	.vidioc_enum_framesizes = rk_vip_enum_framesizes,
+	.vidioc_enum_frameintervals = rk_vip_enum_frameintervals,
+
+	.vidioc_enum_input = rk_vip_enum_input,
+	.vidioc_g_input = rk_vip_g_input,
+	.vidioc_s_input = rk_vip_s_input,
+
+	.vidioc_g_parm = rk_vip_g_parm,
+	.vidioc_s_parm = rk_vip_s_parm,
+};
+
+void rk_vip_unregister_stream_vdev(struct rk_vip_device *dev)
+{
+	struct rk_vip_stream *stream = &dev->stream;
+
+	media_entity_cleanup(&stream->vdev.entity);
+	video_unregister_device(&stream->vdev);
+}
+
+int rk_vip_register_stream_vdev(struct rk_vip_device *dev)
+{
+	struct rk_vip_stream *stream = &dev->stream;
+	struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
+	struct video_device *vdev = &stream->vdev;
+	int ret;
+
+	strlcpy(vdev->name, VIP_VIDEODEVICE_NAME, sizeof(vdev->name));
+	mutex_init(&stream->vlock);
+
+	vdev->ioctl_ops = &rk_vip_v4l2_ioctl_ops;
+	vdev->release = video_device_release_empty;
+	vdev->fops = &rk_vip_fops;
+	vdev->minor = -1;
+	vdev->v4l2_dev = v4l2_dev;
+	vdev->lock = &stream->vlock;
+	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
+			    V4L2_CAP_STREAMING;
+	video_set_drvdata(vdev, stream);
+	vdev->vfl_dir = VFL_DIR_RX;
+	stream->pad.flags = MEDIA_PAD_FL_SINK;
+
+	rk_vip_init_vb2_queue(&stream->buf_queue, stream,
+			      V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE |
+			      V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	vdev->queue = &stream->buf_queue;
+	strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
+
+	ret = video_register_device(vdev, VFL_TYPE_SUBDEV, -1);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev,
+			 "video_register_device failed with error %d\n", ret);
+		return ret;
+	}
+
+	ret = media_entity_pads_init(&vdev->entity, 1, &stream->pad);
+	if (ret < 0)
+		goto unreg;
+
+	return 0;
+unreg:
+	video_unregister_device(vdev);
+	return ret;
+}
+
+static void rk_vip_vb_done(struct rk_vip_stream *stream,
+			   struct vb2_v4l2_buffer *vb_done)
+{
+	vb2_set_plane_payload(&vb_done->vb2_buf, 0,
+			      stream->pixm.plane_fmt[0].sizeimage);
+	vb_done->vb2_buf.timestamp = ktime_get_ns();
+	vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE);
+}
+
+static void rk_vip_reset_stream(struct rk_vip_device *vip_dev)
+{
+	void __iomem *base = vip_dev->base_addr;
+	u32 ctl = read_vip_reg(base, VIP_CTRL);
+
+	write_vip_reg(base, VIP_CTRL, ctl & (~VIP_CTRL_ENABLE_CAPTURE));
+	write_vip_reg(base, VIP_CTRL, ctl | VIP_CTRL_ENABLE_CAPTURE);
+}
+
+void rk_vip_irq_pingpong(struct rk_vip_device *vip_dev)
+{
+	struct rk_vip_stream *stream = &vip_dev->stream;
+	void __iomem *base = vip_dev->base_addr;
+	unsigned int intstat;
+
+	u32 lastline, lastpix, ctl, vip_frmst;
+
+	intstat = read_vip_reg(base, VIP_INTSTAT);
+	vip_frmst = read_vip_reg(base, VIP_FRAME_STATUS);
+	lastline = VIP_FETCH_Y_LAST_LINE(read_vip_reg(base, VIP_LAST_LINE));
+	lastpix = read_vip_reg(base, VIP_LAST_PIX);
+	ctl = read_vip_reg(base, VIP_CTRL);
+
+	/* There are two irqs enabled:
+	 *  - PST_INF_FRAME_END: vip FIFO is ready,
+	 *    this is prior to FRAME_END
+	 *  - FRAME_END: vip has saved frame to memory,
+	 *    a frame ready
+	 */
+
+	if ((intstat & VIP_INTSTAT_PST_INF_FRAME_END)) {
+		write_vip_reg(base, VIP_INTSTAT,
+			      VIP_INTSTAT_PST_INF_FRAME_END_CLR);
+
+		if (stream->stopping)
+			/* To stop VIP ASAP, before FRAME_END irq */
+			write_vip_reg(base, VIP_CTRL,
+				      ctl & (~VIP_CTRL_ENABLE_CAPTURE));
+	}
+
+	if ((intstat & VIP_INTSTAT_PRE_INF_FRAME_END))
+		write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_PRE_INF_FRAME_END);
+
+	if (intstat & (VIP_INTSTAT_LINE_ERR | VIP_INTSTAT_PIX_ERR)) {
+		write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_LINE_ERR |
+						 VIP_INTSTAT_PIX_ERR);
+		rk_vip_reset_stream(vip_dev);
+	}
+
+	if ((intstat & VIP_INTSTAT_FRAME_END)) {
+		struct vb2_v4l2_buffer *vb_done = NULL;
+
+		write_vip_reg(base, VIP_INTSTAT, VIP_INTSTAT_FRAME_END_CLR |
+						 VIP_INTSTAT_LINE_END_CLR);
+
+		if (stream->stopping) {
+			rk_vip_stream_stop(stream);
+			stream->stopping = false;
+			wake_up(&stream->wq_stopped);
+			return;
+		}
+
+		if (lastline != stream->pixm.height) {
+			v4l2_err(&vip_dev->v4l2_dev,
+				 "Bad frame, irq:0x%x frmst:0x%x size:%dx%d\n",
+				 intstat, vip_frmst, lastline, lastpix);
+
+			rk_vip_reset_stream(vip_dev);
+		}
+
+		if (vip_frmst & VIP_INTSTAT_F0_READY)
+			stream->frame_phase = 0;
+		else if (vip_frmst & VIP_INTSTAT_F1_READY)
+			stream->frame_phase = 1;
+		else
+			return;
+
+		if (stream->buffs[stream->frame_phase])
+			vb_done = &stream->buffs[stream->frame_phase]->vb;
+
+		rk_vip_assign_new_buffer_pingpong(stream);
+
+		if (vb_done)
+			rk_vip_vb_done(stream, vb_done);
+
+		stream->frame_idx++;
+	}
+}
diff --git a/drivers/media/platform/rockchip/vip/dev.c b/drivers/media/platform/rockchip/vip/dev.c
new file mode 100644
index 000000000000..d9b64f088c37
--- /dev/null
+++ b/drivers/media/platform/rockchip/vip/dev.c
@@ -0,0 +1,408 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Rockchip VIP Camera Interface Driver
+ *
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
+ * Copyright (C) 2020 Maxime Chevallier <maxime.chevallier@bootlin.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/of_platform.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/reset.h>
+#include <linux/pm_runtime.h>
+#include <linux/pinctrl/consumer.h>
+#include <media/v4l2-fwnode.h>
+
+#include "dev.h"
+#include "regs.h"
+
+#define RK_VIP_VERNO_LEN		10
+
+struct vip_match_data {
+	int chip_id;
+	const char * const *clks;
+	const char * const *rsts;
+	int clks_num;
+	int rsts_num;
+};
+
+static int rk_vip_create_links(struct rk_vip_device *dev)
+{
+	struct v4l2_subdev *sd = dev->sensor.sd;
+	int ret;
+
+	ret = media_entity_get_fwnode_pad(&sd->entity, sd->fwnode,
+					  MEDIA_PAD_FL_SOURCE);
+	if (ret)
+		return ret;
+
+	ret = media_create_pad_link(&sd->entity, 0,
+				    &dev->stream.vdev.entity, 0,
+				    MEDIA_LNK_FL_ENABLED);
+	if (ret) {
+		dev_err(dev->dev, "failed to create link");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
+{
+	struct rk_vip_device *dev;
+	int ret;
+
+	dev = container_of(notifier, struct rk_vip_device, notifier);
+
+	mutex_lock(&dev->media_dev.graph_mutex);
+
+	ret = rk_vip_create_links(dev);
+	if (ret < 0)
+		goto unlock;
+
+	ret = v4l2_device_register_subdev_nodes(&dev->v4l2_dev);
+	if (ret < 0)
+		goto unlock;
+
+unlock:
+	mutex_unlock(&dev->media_dev.graph_mutex);
+	return ret;
+}
+
+static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
+				 struct v4l2_subdev *subdev,
+				 struct v4l2_async_subdev *asd)
+{
+	struct rk_vip_device *vip_dev = container_of(notifier,
+					struct rk_vip_device, notifier);
+
+	int pad;
+
+	vip_dev->sensor.sd = subdev;
+	pad = media_entity_get_fwnode_pad(&subdev->entity, subdev->fwnode,
+					  MEDIA_PAD_FL_SOURCE);
+	if (pad < 0)
+		return pad;
+
+	vip_dev->sensor.pad = pad;
+
+	return 0;
+}
+
+static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
+	.bound = subdev_notifier_bound,
+	.complete = subdev_notifier_complete,
+};
+
+static int vip_subdev_notifier(struct rk_vip_device *vip_dev)
+{
+	struct v4l2_async_notifier *ntf = &vip_dev->notifier;
+	struct device *dev = vip_dev->dev;
+	struct v4l2_fwnode_endpoint vep = {
+		.bus_type = V4L2_MBUS_PARALLEL,
+	};
+	struct fwnode_handle *ep;
+	int ret;
+
+	v4l2_async_notifier_init(ntf);
+
+	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0,
+			FWNODE_GRAPH_ENDPOINT_NEXT);
+	if (!ep)
+		return -EINVAL;
+
+	ret = v4l2_fwnode_endpoint_parse(ep, &vep);
+	if (ret)
+		return ret;
+
+	ret = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
+							   &vip_dev->asd);
+	if (ret)
+		return ret;
+
+	ntf->ops = &subdev_notifier_ops;
+
+	fwnode_handle_put(ep);
+
+	ret = v4l2_async_notifier_register(&vip_dev->v4l2_dev, ntf);
+	return ret;
+}
+
+static int rk_vip_register_platform_subdevs(struct rk_vip_device *vip_dev)
+{
+	int ret;
+
+	ret = rk_vip_register_stream_vdev(vip_dev);
+	if (ret < 0)
+		return ret;
+
+	ret = vip_subdev_notifier(vip_dev);
+	if (ret < 0) {
+		v4l2_err(&vip_dev->v4l2_dev,
+			 "Failed to register subdev notifier(%d)\n", ret);
+		rk_vip_unregister_stream_vdev(vip_dev);
+	}
+
+	return 0;
+}
+
+static const char * const px30_vip_clks[] = {
+	"aclk_vip",
+	"hclk_vip",
+	"pclk_vip",
+	"vip_out",
+};
+
+static const char * const px30_vip_rsts[] = {
+	"rst_vip_a",
+	"rst_vip_h",
+	"rst_vip_pclkin",
+};
+
+static const struct vip_match_data px30_vip_match_data = {
+	.chip_id = CHIP_PX30_VIP,
+	.clks = px30_vip_clks,
+	.clks_num = ARRAY_SIZE(px30_vip_clks),
+	.rsts = px30_vip_rsts,
+	.rsts_num = ARRAY_SIZE(px30_vip_rsts),
+};
+
+static const struct of_device_id rk_vip_plat_of_match[] = {
+	{
+		.compatible = "rockchip,px30-vip",
+		.data = &px30_vip_match_data,
+	},
+	{},
+};
+
+static irqreturn_t rk_vip_irq_handler(int irq, void *ctx)
+{
+	struct device *dev = ctx;
+	struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
+
+	rk_vip_irq_pingpong(vip_dev);
+
+	return IRQ_HANDLED;
+}
+
+static void rk_vip_disable_sys_clk(struct rk_vip_device *vip_dev)
+{
+	int i;
+
+	for (i = vip_dev->clk_size - 1; i >= 0; i--)
+		clk_disable_unprepare(vip_dev->clks[i]);
+}
+
+static int rk_vip_enable_sys_clk(struct rk_vip_device *vip_dev)
+{
+	int i, ret = -EINVAL;
+
+	for (i = 0; i < vip_dev->clk_size; i++) {
+		ret = clk_prepare_enable(vip_dev->clks[i]);
+
+		if (ret < 0)
+			goto err;
+	}
+
+	return 0;
+
+err:
+	for (--i; i >= 0; --i)
+		clk_disable_unprepare(vip_dev->clks[i]);
+
+	return ret;
+}
+
+void rk_vip_soft_reset(struct rk_vip_device *vip_dev)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(vip_dev->vip_rst); i++)
+		if (vip_dev->vip_rst[i])
+			reset_control_assert(vip_dev->vip_rst[i]);
+	udelay(5);
+	for (i = 0; i < ARRAY_SIZE(vip_dev->vip_rst); i++)
+		if (vip_dev->vip_rst[i])
+			reset_control_deassert(vip_dev->vip_rst[i]);
+}
+
+static int rk_vip_plat_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *match;
+	struct device_node *node = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
+	struct v4l2_device *v4l2_dev;
+	struct rk_vip_device *vip_dev;
+	const struct vip_match_data *data;
+	struct resource *res;
+	int i, ret, irq;
+
+	match = of_match_node(rk_vip_plat_of_match, node);
+	if (IS_ERR(match))
+		return PTR_ERR(match);
+
+	vip_dev = devm_kzalloc(dev, sizeof(*vip_dev), GFP_KERNEL);
+	if (!vip_dev)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, vip_dev);
+	vip_dev->dev = dev;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ret = devm_request_irq(dev, irq, rk_vip_irq_handler, IRQF_SHARED,
+			       dev_driver_string(dev), dev);
+	if (ret < 0) {
+		dev_err(dev, "request irq failed: %d\n", ret);
+		return ret;
+	}
+
+	vip_dev->irq = irq;
+	data = match->data;
+	vip_dev->chip_id = data->chip_id;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	vip_dev->base_addr = devm_ioremap_resource(dev, res);
+
+	if (IS_ERR(vip_dev->base_addr))
+		return PTR_ERR(vip_dev->base_addr);
+
+	if (data->clks_num > RK_VIP_MAX_BUS_CLK ||
+		data->rsts_num > RK_VIP_MAX_RESET) {
+		dev_err(dev, "out of range: clks(%d %d) rsts(%d %d)\n",
+			data->clks_num, RK_VIP_MAX_BUS_CLK,
+			data->rsts_num, RK_VIP_MAX_RESET);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < data->clks_num; i++) {
+		struct clk *clk = devm_clk_get(dev, data->clks[i]);
+
+		if (IS_ERR(clk)) {
+			dev_err(dev, "failed to get %s\n", data->clks[i]);
+			return PTR_ERR(clk);
+		}
+
+		vip_dev->clks[i] = clk;
+	}
+
+	vip_dev->clk_size = data->clks_num;
+
+	for (i = 0; i < data->rsts_num; i++) {
+		struct reset_control *rst =
+			devm_reset_control_get(dev, data->rsts[i]);
+		if (IS_ERR(rst)) {
+			dev_err(dev, "failed to get %s\n", data->rsts[i]);
+			return PTR_ERR(rst);
+		}
+		vip_dev->vip_rst[i] = rst;
+	}
+
+	/* Initialize the stream */
+	rk_vip_stream_init(vip_dev);
+
+	strlcpy(vip_dev->media_dev.model, "rk_vip",
+		sizeof(vip_dev->media_dev.model));
+	vip_dev->media_dev.dev = &pdev->dev;
+	v4l2_dev = &vip_dev->v4l2_dev;
+	v4l2_dev->mdev = &vip_dev->media_dev;
+	strlcpy(v4l2_dev->name, "rk_vip", sizeof(v4l2_dev->name));
+	v4l2_ctrl_handler_init(&vip_dev->ctrl_handler, 8);
+	v4l2_dev->ctrl_handler = &vip_dev->ctrl_handler;
+
+	ret = v4l2_device_register(vip_dev->dev, &vip_dev->v4l2_dev);
+	if (ret < 0)
+		return ret;
+
+	media_device_init(&vip_dev->media_dev);
+
+	ret = media_device_register(&vip_dev->media_dev);
+	if (ret < 0) {
+		v4l2_err(v4l2_dev, "Failed to register media device: %d\n",
+			 ret);
+		goto err_unreg_v4l2_dev;
+	}
+
+	/* create & register platefom subdev (from of_node) */
+	ret = rk_vip_register_platform_subdevs(vip_dev);
+	if (ret < 0)
+		goto err_unreg_media_dev;
+
+	ret = of_reserved_mem_device_init(dev);
+	if (ret)
+		v4l2_warn(v4l2_dev, "No reserved memory region assign to VIP\n");
+
+	pm_runtime_enable(&pdev->dev);
+
+	return 0;
+
+err_unreg_media_dev:
+	media_device_unregister(&vip_dev->media_dev);
+err_unreg_v4l2_dev:
+	v4l2_device_unregister(&vip_dev->v4l2_dev);
+	return ret;
+}
+
+static int rk_vip_plat_remove(struct platform_device *pdev)
+{
+	struct rk_vip_device *vip_dev = platform_get_drvdata(pdev);
+
+	pm_runtime_disable(&pdev->dev);
+
+	media_device_unregister(&vip_dev->media_dev);
+	v4l2_device_unregister(&vip_dev->v4l2_dev);
+	rk_vip_unregister_stream_vdev(vip_dev);
+
+	return 0;
+}
+
+static int __maybe_unused rk_vip_runtime_suspend(struct device *dev)
+{
+	struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
+
+	rk_vip_disable_sys_clk(vip_dev);
+
+	return pinctrl_pm_select_sleep_state(dev);
+}
+
+static int __maybe_unused rk_vip_runtime_resume(struct device *dev)
+{
+	struct rk_vip_device *vip_dev = dev_get_drvdata(dev);
+	int ret;
+
+	ret = pinctrl_pm_select_default_state(dev);
+	if (ret < 0)
+		return ret;
+	rk_vip_enable_sys_clk(vip_dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops rk_vip_plat_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+	SET_RUNTIME_PM_OPS(rk_vip_runtime_suspend, rk_vip_runtime_resume, NULL)
+};
+
+static struct platform_driver rk_vip_plat_drv = {
+	.driver = {
+		   .name = VIP_DRIVER_NAME,
+		   .of_match_table = of_match_ptr(rk_vip_plat_of_match),
+		   .pm = &rk_vip_plat_pm_ops,
+	},
+	.probe = rk_vip_plat_probe,
+	.remove = rk_vip_plat_remove,
+};
+
+module_platform_driver(rk_vip_plat_drv);
+MODULE_AUTHOR("Rockchip Camera/ISP team");
+MODULE_DESCRIPTION("Rockchip VIP platform driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/platform/rockchip/vip/dev.h b/drivers/media/platform/rockchip/vip/dev.h
new file mode 100644
index 000000000000..8d803885459d
--- /dev/null
+++ b/drivers/media/platform/rockchip/vip/dev.h
@@ -0,0 +1,206 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Rockchip VIP Driver
+ *
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
+ */
+
+#ifndef _RK_VIP_DEV_H
+#define _RK_VIP_DEV_H
+
+#include <linux/mutex.h>
+#include <media/media-device.h>
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/videobuf2-v4l2.h>
+
+#define VIP_DRIVER_NAME		"rk_vip"
+#define VIP_VIDEODEVICE_NAME	"stream_vip"
+
+#define RK_VIP_MAX_BUS_CLK	8
+#define RK_VIP_MAX_SENSOR	2
+#define RK_VIP_MAX_RESET		5
+#define RK_VIP_MAX_CSI_CHANNEL	4
+
+#define RK_VIP_DEFAULT_WIDTH	640
+#define RK_VIP_DEFAULT_HEIGHT	480
+
+#define write_vip_reg(base, addr, val)  writel(val, (addr) + (base))
+#define read_vip_reg(base, addr) readl((addr) + (base))
+
+#define write_csihost_reg(base, addr, val)  writel(val, (addr) + (base))
+#define read_csihost_reg(base, addr) readl((addr) + (base))
+
+enum rk_vip_state {
+	RK_VIP_STATE_DISABLED,
+	RK_VIP_STATE_READY,
+	RK_VIP_STATE_STREAMING
+};
+
+enum rk_vip_chip_id {
+	CHIP_PX30_VIP,
+	CHIP_RK1808_VIP,
+	CHIP_RK3128_VIP,
+	CHIP_RK3288_VIP
+};
+
+enum host_type_t {
+	RK_CSI_RXHOST,
+	RK_DSI_RXHOST
+};
+
+struct rk_vip_buffer {
+	struct vb2_v4l2_buffer vb;
+	struct list_head queue;
+	union {
+		u32 buff_addr[VIDEO_MAX_PLANES];
+		void *vaddr[VIDEO_MAX_PLANES];
+	};
+};
+
+struct rk_vip_scratch_buffer {
+	void *vaddr;
+	dma_addr_t dma_addr;
+	u32 size;
+};
+
+extern int rk_vip_debug;
+
+static inline struct rk_vip_buffer *to_rk_vip_buffer(struct vb2_v4l2_buffer *vb)
+{
+	return container_of(vb, struct rk_vip_buffer, vb);
+}
+
+/*
+ * struct rk_vip_sensor_info - Sensor infomations
+ * @mbus: media bus configuration
+ */
+struct rk_vip_sensor_info {
+	struct v4l2_subdev *sd;
+	int pad;
+	struct v4l2_mbus_config mbus;
+	int lanes;
+};
+
+/*
+ * struct vip_output_fmt - The output format
+ *
+ * @fourcc: pixel format in fourcc
+ * @cplanes: number of colour planes
+ * @fmt_val: the fmt val corresponding to VIP_FOR register
+ * @bpp: bits per pixel for each cplanes
+ */
+struct vip_output_fmt {
+	u32 fourcc;
+	u32 mbus;
+	u8 cplanes;
+	u32 fmt_val;
+	u8 bpp[VIDEO_MAX_PLANES];
+};
+
+enum vip_fmt_type {
+	VIP_FMT_TYPE_YUV = 0,
+	VIP_FMT_TYPE_RAW,
+};
+
+/*
+ * struct vip_input_fmt - The input mbus format from sensor
+ *
+ * @mbus_code: mbus format
+ * @dvp_fmt_val: the fmt val corresponding to VIP_FOR register
+ * @csi_fmt_val: the fmt val corresponding to VIP_CSI_ID_CTRL
+ * @field: the field type of the input from sensor
+ */
+struct vip_input_fmt {
+	u32 mbus_code;
+	u32 dvp_fmt_val;
+	u32 csi_fmt_val;
+	enum vip_fmt_type fmt_type;
+	enum v4l2_field field;
+};
+
+/*
+ * struct rk_vip_stream - Stream states TODO
+ *
+ * @vbq_lock: lock to protect buf_queue
+ * @buf_queue: queued buffer list
+ * @scratch_buf: scratch space to store dropped data
+ *
+ * rk_vip use shadowsock registers, so it need two buffer at a time
+ * @curr_buf: the buffer used for current frame
+ * @next_buf: the buffer used for next frame
+ */
+struct rk_vip_stream {
+	struct rk_vip_device		*vipdev;
+	enum rk_vip_state		state;
+	bool				stopping;
+	wait_queue_head_t		wq_stopped;
+	int				frame_idx;
+	int				frame_phase;
+
+	/* lock between irq and buf_queue */
+	spinlock_t			vbq_lock;
+	struct vb2_queue		buf_queue;
+	struct list_head		buf_head;
+	struct rk_vip_scratch_buffer	scratch_buf;
+	struct rk_vip_buffer		*buffs[2];
+
+	/* vfd lock */
+	struct mutex			vlock;
+	struct video_device		vdev;
+	/* TODO: pad for dvp and mipi separately? */
+	struct media_pad		pad;
+
+	const struct vip_output_fmt	*vip_fmt_out;
+	const struct vip_input_fmt	*vip_fmt_in;
+	struct v4l2_pix_format_mplane	pixm;
+	struct v4l2_rect		crop;
+	int				crop_enable;
+};
+
+static inline struct rk_vip_stream *to_rk_vip_stream(struct video_device *vdev)
+{
+	return container_of(vdev, struct rk_vip_stream, vdev);
+}
+
+/*
+ * struct rk_vip_device - ISP platform device
+ * @base_addr: base register address
+ * @active_sensor: sensor in-use, set when streaming on
+ * @stream: capture video device
+ */
+struct rk_vip_device {
+	struct list_head		list;
+	struct device			*dev;
+	int				irq;
+	void __iomem			*base_addr;
+	void __iomem			*csi_base;
+	struct clk			*clks[RK_VIP_MAX_BUS_CLK];
+	int				clk_size;
+	struct vb2_alloc_ctx		*alloc_ctx;
+	bool				iommu_en;
+	struct iommu_domain		*domain;
+	struct reset_control		*vip_rst[RK_VIP_MAX_RESET];
+
+	struct v4l2_device		v4l2_dev;
+	struct media_device		media_dev;
+	struct v4l2_ctrl_handler	ctrl_handler;
+	struct v4l2_async_notifier	notifier;
+	struct v4l2_async_subdev	asd;
+	struct rk_vip_sensor_info	sensor;
+
+	struct rk_vip_stream		stream;
+
+	int				chip_id;
+};
+
+void rk_vip_unregister_stream_vdev(struct rk_vip_device *dev);
+int rk_vip_register_stream_vdev(struct rk_vip_device *dev);
+void rk_vip_stream_init(struct rk_vip_device *dev);
+
+void rk_vip_irq_oneframe(struct rk_vip_device *vip_dev);
+void rk_vip_irq_pingpong(struct rk_vip_device *vip_dev);
+void rk_vip_soft_reset(struct rk_vip_device *vip_dev);
+
+#endif
diff --git a/drivers/media/platform/rockchip/vip/regs.h b/drivers/media/platform/rockchip/vip/regs.h
new file mode 100644
index 000000000000..cfe287ce5bf6
--- /dev/null
+++ b/drivers/media/platform/rockchip/vip/regs.h
@@ -0,0 +1,260 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Rockchip VIP Driver
+ *
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
+ */
+
+#ifndef _RK_VIP_REGS_H
+#define _RK_VIP_REGS_H
+
+/* VIP Reg Offset */
+#define VIP_CTRL			0x00
+#define VIP_INTEN			0x04
+#define VIP_INTSTAT			0x08
+#define VIP_FOR				0x0c
+#define VIP_LINE_NUM_ADDR		0x10
+#define VIP_FRM0_ADDR_Y			0x14
+#define VIP_FRM0_ADDR_UV		0x18
+#define VIP_FRM1_ADDR_Y			0x1c
+#define VIP_FRM1_ADDR_UV		0x20
+#define VIP_VIR_LINE_WIDTH		0x24
+#define VIP_SET_SIZE			0x28
+#define VIP_SCM_ADDR_Y			0x2c
+#define VIP_SCM_ADDR_U			0x30
+#define VIP_SCM_ADDR_V			0x34
+#define VIP_WB_UP_FILTER		0x38
+#define VIP_WB_LOW_FILTER		0x3c
+#define VIP_WBC_CNT			0x40
+#define VIP_CROP			0x44
+#define VIP_SCL_CTRL			0x48
+#define VIP_SCL_DST			0x4c
+#define VIP_SCL_FCT			0x50
+#define VIP_SCL_VALID_NUM		0x54
+#define VIP_LINE_LOOP_CTR		0x58
+#define VIP_FRAME_STATUS		0x60
+#define VIP_CUR_DST			0x64
+#define VIP_LAST_LINE			0x68
+#define VIP_LAST_PIX			0x6c
+
+/* RK1808 VIP CSI Registers Offset */
+#define VIP_CSI_ID0_CTRL0		0x80
+#define VIP_CSI_ID0_CTRL1		0x84
+#define VIP_CSI_ID1_CTRL0		0x88
+#define VIP_CSI_ID1_CTRL1		0x8c
+#define VIP_CSI_ID2_CTRL0		0x90
+#define VIP_CSI_ID2_CTRL1		0x94
+#define VIP_CSI_ID3_CTRL0		0x98
+#define VIP_CSI_ID3_CTRL1		0x9c
+#define VIP_CSI_WATER_LINE		0xa0
+#define VIP_CSI_FRM0_ADDR_Y_ID0		0xa4
+#define VIP_CSI_FRM1_ADDR_Y_ID0		0xa8
+#define VIP_CSI_FRM0_ADDR_UV_ID0	0xac
+#define VIP_CSI_FRM1_ADDR_UV_ID0	0xb0
+#define VIP_CSI_FRM0_VLW_Y_ID0		0xb4
+#define VIP_CSI_FRM1_VLW_Y_ID0		0xb8
+#define VIP_CSI_FRM0_VLW_UV_ID0		0xbc
+#define VIP_CSI_FRM1_VLW_UV_ID0		0xc0
+#define VIP_CSI_FRM0_ADDR_Y_ID1		0xc4
+#define VIP_CSI_FRM1_ADDR_Y_ID1		0xc8
+#define VIP_CSI_FRM0_ADDR_UV_ID1	0xcc
+#define VIP_CSI_FRM1_ADDR_UV_ID1	0xd0
+#define VIP_CSI_FRM0_VLW_Y_ID1		0xd4
+#define VIP_CSI_FRM1_VLW_Y_ID1		0xd8
+#define VIP_CSI_FRM0_VLW_UV_ID1		0xdc
+#define VIP_CSI_FRM1_VLW_UV_ID1		0xe0
+#define VIP_CSI_FRM0_ADDR_Y_ID2		0xe4
+#define VIP_CSI_FRM1_ADDR_Y_ID2		0xe8
+#define VIP_CSI_FRM0_ADDR_UV_ID2	0xec
+#define VIP_CSI_FRM1_ADDR_UV_ID2	0xf0
+#define VIP_CSI_FRM0_VLW_Y_ID2		0xf4
+#define VIP_CSI_FRM1_VLW_Y_ID2		0xf8
+#define VIP_CSI_FRM0_VLW_UV_ID2		0xfc
+#define VIP_CSI_FRM1_VLW_UV_ID2		0x100
+#define VIP_CSI_FRM0_ADDR_Y_ID3		0x104
+#define VIP_CSI_FRM1_ADDR_Y_ID3		0x108
+#define VIP_CSI_FRM0_ADDR_UV_ID3	0x10c
+#define VIP_CSI_FRM1_ADDR_UV_ID3	0x110
+#define VIP_CSI_FRM0_VLW_Y_ID3		0x114
+#define VIP_CSI_FRM1_VLW_Y_ID3		0x118
+#define VIP_CSI_FRM0_VLW_UV_ID3		0x11c
+#define VIP_CSI_FRM1_VLW_UV_ID3		0x120
+#define VIP_CSI_INTEN			0x124
+#define VIP_CSI_INTSTAT			0x128
+#define VIP_CSI_LINE_INT_NUM_ID0_1	0x12c
+#define VIP_CSI_LINE_INT_NUM_ID2_3	0x130
+#define VIP_CSI_LINE_CNT_ID0_1		0x134
+#define VIP_CSI_LINE_CNT_ID2_3		0x138
+#define VIP_CSI_ID0_CROP_START		0x13c
+#define VIP_CSI_ID1_CROP_START		0x140
+#define VIP_CSI_ID2_CROP_START		0x144
+#define VIP_CSI_ID3_CROP_START		0x148
+
+/* The key register bit description */
+
+/* VIP_CTRL Reg */
+#define VIP_CTRL_DISABLE_CAPTURE			(0x0 << 0)
+#define VIP_CTRL_ENABLE_CAPTURE			(0x1 << 0)
+#define VIP_CTRL_MODE_ONEFRAME			(0x0 << 1)
+#define VIP_CTRL_MODE_PINGPONG			(0x1 << 1)
+#define VIP_CTRL_MODE_LINELOOP			(0x2 << 1)
+#define VIP_CTRL_AXI_BURST_16			(0xF << 12)
+
+/* VIP_INTEN */
+#define VIP_INTEN_DISABLE			(0x0 << 0)
+#define VIP_INTEN_FRAME_END_EN			(0x1 << 0)
+#define VIP_INTEN_LINE_ERR_EN			(0x1 << 2)
+#define VIP_INTEN_BUS_ERR_EN			(0x1 << 6)
+#define VIP_INTEN_SCL_ERR_EN			(0x1 << 7)
+#define VIP_INTEN_PST_INF_FRAME_END_EN		(0x1 << 9)
+
+/* VIP INTSTAT */
+#define VIP_INTSTAT_CLS			(0x3FF)
+#define VIP_INTSTAT_FRAME_END			(0x01 << 0)
+#define VIP_INTSTAT_LINE_END			(0x01 << 1)
+#define VIP_INTSTAT_LINE_ERR			(0x01 << 2)
+#define VIP_INTSTAT_PIX_ERR			(0x01 << 3)
+#define VIP_INTSTAT_PRE_INF_FRAME_END		(0x01 << 8)
+#define VIP_INTSTAT_PST_INF_FRAME_END		(0x01 << 9)
+#define VIP_INTSTAT_FRAME_END_CLR			(0x01 << 0)
+#define VIP_INTSTAT_LINE_END_CLR			(0x01 << 1)
+#define VIP_INTSTAT_LINE_ERR_CLR			(0x01 << 2)
+#define VIP_INTSTAT_PST_INF_FRAME_END_CLR		(0x01 << 9)
+#define VIP_INTSTAT_ERR			(0xFC)
+
+/* VIP_FRAME STATUS */
+#define VIP_FRAME_STAT_CLS			0x00
+#define VIP_FRAME_FRM0_STAT_CLS			0x20	/* write 0 to clear frame 0 */
+
+/* VIP_FORMAT */
+#define VIP_FORMAT_VSY_HIGH_ACTIVE			(0x01 << 0)
+#define VIP_FORMAT_VSY_LOW_ACTIVE			(0x00 << 0)
+#define VIP_FORMAT_HSY_LOW_ACTIVE			(0x01 << 1)
+#define VIP_FORMAT_HSY_HIGH_ACTIVE			(0x00 << 1)
+#define VIP_FORMAT_INPUT_MODE_YUV			(0x00 << 2)
+#define VIP_FORMAT_INPUT_MODE_PAL			(0x02 << 2)
+#define VIP_FORMAT_INPUT_MODE_NTSC			(0x03 << 2)
+#define VIP_FORMAT_INPUT_MODE_BT1120		(0x07 << 2)
+#define VIP_FORMAT_INPUT_MODE_RAW			(0x04 << 2)
+#define VIP_FORMAT_INPUT_MODE_JPEG			(0x05 << 2)
+#define VIP_FORMAT_INPUT_MODE_MIPI			(0x06 << 2)
+#define VIP_FORMAT_YUV_INPUT_ORDER_UYVY		(0x00 << 5)
+#define VIP_FORMAT_YUV_INPUT_ORDER_YVYU		(0x01 << 5)
+#define VIP_FORMAT_YUV_INPUT_ORDER_VYUY		(0x10 << 5)
+#define VIP_FORMAT_YUV_INPUT_ORDER_YUYV		(0x03 << 5)
+#define VIP_FORMAT_YUV_INPUT_422			(0x00 << 7)
+#define VIP_FORMAT_YUV_INPUT_420			(0x01 << 7)
+#define VIP_FORMAT_INPUT_420_ORDER_EVEN		(0x00 << 8)
+#define VIP_FORMAT_INPUT_420_ORDER_ODD		(0x01 << 8)
+#define VIP_FORMAT_CCIR_INPUT_ORDER_ODD		(0x00 << 9)
+#define VIP_FORMAT_CCIR_INPUT_ORDER_EVEN		(0x01 << 9)
+#define VIP_FORMAT_RAW_DATA_WIDTH_8		(0x00 << 11)
+#define VIP_FORMAT_RAW_DATA_WIDTH_10		(0x01 << 11)
+#define VIP_FORMAT_RAW_DATA_WIDTH_12		(0x02 << 11)
+#define VIP_FORMAT_YUV_OUTPUT_422			(0x00 << 16)
+#define VIP_FORMAT_YUV_OUTPUT_420			(0x01 << 16)
+#define VIP_FORMAT_OUTPUT_420_ORDER_EVEN		(0x00 << 17)
+#define VIP_FORMAT_OUTPUT_420_ORDER_ODD		(0x01 << 17)
+#define VIP_FORMAT_RAWD_DATA_LITTLE_ENDIAN		(0x00 << 18)
+#define VIP_FORMAT_RAWD_DATA_BIG_ENDIAN		(0x01 << 18)
+#define VIP_FORMAT_UV_STORAGE_ORDER_UVUV		(0x00 << 19)
+#define VIP_FORMAT_UV_STORAGE_ORDER_VUVU		(0x01 << 19)
+#define VIP_FORMAT_BT1120_CLOCK_SINGLE_EDGES	(0x00 << 24)
+#define VIP_FORMAT_BT1120_CLOCK_DOUBLE_EDGES	(0x01 << 24)
+#define VIP_FORMAT_BT1120_TRANSMIT_INTERFACE	(0x00 << 25)
+#define VIP_FORMAT_BT1120_TRANSMIT_PROGRESS	(0x01 << 25)
+#define VIP_FORMAT_BT1120_YC_SWAP			(0x01 << 26)
+
+/* VIP_SCL_CTRL */
+#define VIP_SCL_CTRL_ENABLE_SCL_DOWN			(0x01 << 0)
+#define VIP_SCL_CTRL_DISABLE_SCL_DOWN		(0x00 << 0)
+#define VIP_SCL_CTRL_ENABLE_SCL_UP			(0x01 << 1)
+#define VIP_SCL_CTRL_DISABLE_SCL_UP			(0x00 << 1)
+#define VIP_SCL_CTRL_ENABLE_YUV_16BIT_BYPASS		(0x01 << 4)
+#define VIP_SCL_CTRL_DISABLE_YUV_16BIT_BYPASS	(0x00 << 4)
+#define VIP_SCL_CTRL_ENABLE_RAW_16BIT_BYPASS		(0x01 << 5)
+#define VIP_SCL_CTRL_DISABLE_RAW_16BIT_BYPASS	(0x00 << 5)
+#define VIP_SCL_CTRL_ENABLE_32BIT_BYPASS		(0x01 << 6)
+#define VIP_SCL_CTRL_DISABLE_32BIT_BYPASS		(0x00 << 6)
+
+/* VIP_INTSTAT */
+#define VIP_INTSTAT_F0_READY			(0x01 << 0)
+#define VIP_INTSTAT_F1_READY			(0x01 << 1)
+
+/* VIP_CROP */
+#define VIP_CROP_Y_SHIFT		16
+#define VIP_CROP_X_SHIFT		0
+
+/* VIP_CSI_ID_CTRL0 */
+#define VIP_CSI_DISABLE_CAPTURE		(0x0 << 0)
+#define VIP_CSI_ENABLE_CAPTURE		(0x1 << 0)
+#define VIP_CSI_WRDDR_TYPE_RAW8		(0x0 << 1)
+#define VIP_CSI_WRDDR_TYPE_RAW10		(0x1 << 1)
+#define VIP_CSI_WRDDR_TYPE_RAW12		(0x2 << 1)
+#define VIP_CSI_WRDDR_TYPE_RGB888		(0x3 << 1)
+#define VIP_CSI_WRDDR_TYPE_YUV422		(0x4 << 1)
+#define VIP_CSI_DISABLE_COMMAND_MODE	(0x0 << 4)
+#define VIP_CSI_ENABLE_COMMAND_MODE		(0x1 << 4)
+#define VIP_CSI_DISABLE_CROP		(0x0 << 5)
+#define VIP_CSI_ENABLE_CROP			(0x1 << 5)
+
+/* VIP_CSI_INTEN */
+#define VIP_CSI_FRAME0_START_INTEN(id)	(0x1 << ((id) * 2))
+#define VIP_CSI_FRAME1_START_INTEN(id)	(0x1 << ((id) * 2 + 1))
+#define VIP_CSI_FRAME0_END_INTEN(id)	(0x1 << ((id) * 2 + 8))
+#define VIP_CSI_FRAME1_END_INTEN(id)	(0x1 << ((id) * 2 + 9))
+#define VIP_CSI_DMA_Y_FIFO_OVERFLOW_INTEN	(0x1 << 16)
+#define VIP_CSI_DMA_UV_FIFO_OVERFLOW_INTEN	(0x1 << 17)
+#define VIP_CSI_CONFIG_FIFO_OVERFLOW_INTEN	(0x1 << 18)
+#define VIP_CSI_BANDWIDTH_LACK_INTEN	(0x1 << 19)
+#define VIP_CSI_RX_FIFO_OVERFLOW_INTEN	(0x1 << 20)
+#define VIP_CSI_ALL_FRAME_START_INTEN	(0xff << 0)
+#define VIP_CSI_ALL_FRAME_END_INTEN		(0xff << 8)
+#define VIP_CSI_ALL_ERROR_INTEN		(0x1f << 16)
+
+/* VIP_CSI_INTSTAT */
+#define VIP_CSI_FRAME0_START_ID0		(0x1 << 0)
+#define VIP_CSI_FRAME1_START_ID0		(0x1 << 1)
+#define VIP_CSI_FRAME0_START_ID1		(0x1 << 2)
+#define VIP_CSI_FRAME1_START_ID1		(0x1 << 3)
+#define VIP_CSI_FRAME0_START_ID2		(0x1 << 4)
+#define VIP_CSI_FRAME1_START_ID2		(0x1 << 5)
+#define VIP_CSI_FRAME0_START_ID3		(0x1 << 6)
+#define VIP_CSI_FRAME1_START_ID3		(0x1 << 7)
+#define VIP_CSI_FRAME0_END_ID0		(0x1 << 8)
+#define VIP_CSI_FRAME1_END_ID0		(0x1 << 9)
+#define VIP_CSI_FRAME0_END_ID1		(0x1 << 10)
+#define VIP_CSI_FRAME1_END_ID1		(0x1 << 11)
+#define VIP_CSI_FRAME0_END_ID2		(0x1 << 12)
+#define VIP_CSI_FRAME1_END_ID2		(0x1 << 13)
+#define VIP_CSI_FRAME0_END_ID3		(0x1 << 14)
+#define VIP_CSI_FRAME1_END_ID3		(0x1 << 15)
+#define VIP_CSI_DMA_Y_FIFO_OVERFLOW		(0x1 << 16)
+#define VIP_CSI_DMA_UV_FIFO_OVERFLOW	(0x1 << 17)
+#define VIP_CSI_CONFIG_FIFO_OVERFLOW	(0x1 << 18)
+#define VIP_CSI_BANDWIDTH_LACK		(0x1 << 19)
+#define VIP_CSI_RX_FIFO_OVERFLOW		(0x1 << 20)
+
+#define VIP_CSI_FIFO_OVERFLOW	(VIP_CSI_DMA_Y_FIFO_OVERFLOW |	\
+				 VIP_CSI_DMA_UV_FIFO_OVERFLOW |	\
+				 VIP_CSI_CONFIG_FIFO_OVERFLOW |	\
+				 VIP_CSI_RX_FIFO_OVERFLOW)
+
+/* CSI Host Registers Define */
+#define VIP_CSIHOST_N_LANES		0x04
+#define VIP_CSIHOST_PHY_RSTZ	0x0c
+#define VIP_CSIHOST_RESETN		0x10
+#define VIP_CSIHOST_ERR1		0x20
+#define VIP_CSIHOST_ERR2		0x24
+#define VIP_CSIHOST_MSK1		0x28
+#define VIP_CSIHOST_MSK2		0x2c
+#define VIP_CSIHOST_CONTROL		0x40
+
+#define VIP_SW_CPHY_EN(x)		((x) << 0)
+#define VIP_SW_DSI_EN(x)		((x) << 4)
+#define VIP_SW_DATATYPE_FS(x)	((x) << 8)
+#define VIP_SW_DATATYPE_FE(x)	((x) << 14)
+#define VIP_SW_DATATYPE_LS(x)	((x) << 20)
+#define VIP_SW_DATATYPE_LE(x)	((x) << 26)
+
+#endif