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Message-ID: <7e6820fc-f099-d42a-6c7e-1ede57cf5d38@collabora.com>
Date: Thu, 7 Mar 2019 17:23:21 -0300
From: André Almeida <andrealmeid@...labora.com>
To: Helen Koike <helen.koike@...labora.com>,
linux-media@...r.kernel.org
Cc: lucmaga@...il.com, linux-kernel@...r.kernel.org,
lkcamp@...ts.libreplanetbr.org, Hans Verkuil <hverkuil@...all.nl>,
kernel@...labora.com
Subject: Re: [PATCH 8/8] media: vimc: propagate pixel format in the stream
On 3/6/19 7:42 PM, Helen Koike wrote:
> Media bus codes were being mapped to pixelformats, which causes a
> limitation on vimc because not all pixelformats can be mapped to media
> bus codes.
> Also, media bus codes are an internal configuration from the device.
> Userspace only assures media bus codes matches between pads and expects
> the image in a given pixelformat. So we can allow almost any media bus
> format to be configured between pads, except for debayer that expects a
> media bus code of type bayer in the sink pad.
>
> Signed-off-by: Helen Koike <helen.koike@...labora.com>
Hello,
I've tested the stream (with the default media bus format and using an
alternative one) using a custom user space application and tested all
capture entities using qv4l2 -d /dev/videoX (where X is each of the
capture entities). Also, I have checked v4l2-compliance -d /dev/videoX
and with v4l2-compliance --streaming=5 -d /dev/videoX and no regressions
where found.
Tested-by: André Almeida <andre.almeida@...labora.com>
>
> ---
>
> drivers/media/platform/vimc/vimc-capture.c | 76 +++--
> drivers/media/platform/vimc/vimc-common.c | 307 ++++++++------------
> drivers/media/platform/vimc/vimc-common.h | 13 +
> drivers/media/platform/vimc/vimc-debayer.c | 78 +++--
> drivers/media/platform/vimc/vimc-scaler.c | 60 ++--
> drivers/media/platform/vimc/vimc-sensor.c | 48 +--
> drivers/media/platform/vimc/vimc-streamer.c | 2 +
> drivers/media/platform/vimc/vimc-streamer.h | 6 +
> 8 files changed, 281 insertions(+), 309 deletions(-)
>
> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
> index e976a9d6b460..6377974879d7 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -28,6 +28,32 @@
>
> #define VIMC_CAP_DRV_NAME "vimc-capture"
>
> +static const u32 vimc_cap_supported_pixftm[] = {
> + V4L2_PIX_FMT_BGR24,
> + V4L2_PIX_FMT_RGB24,
> + V4L2_PIX_FMT_ARGB32,
> + V4L2_PIX_FMT_SBGGR8,
> + V4L2_PIX_FMT_SGBRG8,
> + V4L2_PIX_FMT_SGRBG8,
> + V4L2_PIX_FMT_SRGGB8,
> + V4L2_PIX_FMT_SBGGR10,
> + V4L2_PIX_FMT_SGBRG10,
> + V4L2_PIX_FMT_SGRBG10,
> + V4L2_PIX_FMT_SRGGB10,
> + V4L2_PIX_FMT_SBGGR10ALAW8,
> + V4L2_PIX_FMT_SGBRG10ALAW8,
> + V4L2_PIX_FMT_SGRBG10ALAW8,
> + V4L2_PIX_FMT_SRGGB10ALAW8,
> + V4L2_PIX_FMT_SBGGR10DPCM8,
> + V4L2_PIX_FMT_SGBRG10DPCM8,
> + V4L2_PIX_FMT_SGRBG10DPCM8,
> + V4L2_PIX_FMT_SRGGB10DPCM8,
> + V4L2_PIX_FMT_SBGGR12,
> + V4L2_PIX_FMT_SGBRG12,
> + V4L2_PIX_FMT_SGRBG12,
> + V4L2_PIX_FMT_SRGGB12,
> +};
> +
> struct vimc_cap_device {
> struct vimc_ent_device ved;
> struct video_device vdev;
> @@ -101,29 +127,25 @@ static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
> struct v4l2_format *f)
> {
> struct v4l2_pix_format *format = &f->fmt.pix;
> - const struct vimc_pix_map *vpix;
>
> format->width = clamp_t(u32, format->width, VIMC_FRAME_MIN_WIDTH,
> VIMC_FRAME_MAX_WIDTH) & ~1;
> format->height = clamp_t(u32, format->height, VIMC_FRAME_MIN_HEIGHT,
> VIMC_FRAME_MAX_HEIGHT) & ~1;
>
> - /* Don't accept a pixelformat that is not on the table */
> - vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
> - if (!vpix) {
> - format->pixelformat = fmt_default.pixelformat;
> - vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
> - }
> - /* TODO: Add support for custom bytesperline values */
> - format->bytesperline = format->width * vpix->bpp;
> - format->sizeimage = format->bytesperline * format->height;
> + vimc_colorimetry_clamp(format);
>
> if (format->field == V4L2_FIELD_ANY)
> format->field = fmt_default.field;
>
> - vimc_colorimetry_clamp(format);
> + /* TODO: Add support for custom bytesperline values */
>
> - return 0;
> + /* Don't accept a pixelformat that is not on the table */
> + if (!v4l2_format_info(format->pixelformat))
> + format->pixelformat = fmt_default.pixelformat;
> +
> + return v4l2_fill_pixfmt(format, format->pixelformat,
> + format->width, format->height);
> }
>
> static int vimc_cap_s_fmt_vid_cap(struct file *file, void *priv,
> @@ -159,27 +181,31 @@ static int vimc_cap_s_fmt_vid_cap(struct file *file, void *priv,
> static int vimc_cap_enum_fmt_vid_cap(struct file *file, void *priv,
> struct v4l2_fmtdesc *f)
> {
> - const struct vimc_pix_map *vpix = vimc_pix_map_by_index(f->index);
> -
> - if (!vpix)
> + if (f->index >= ARRAY_SIZE(vimc_cap_supported_pixftm))
> return -EINVAL;
>
> - f->pixelformat = vpix->pixelformat;
> + f->pixelformat = vimc_cap_supported_pixftm[f->index];
>
> return 0;
> }
>
> +static bool vimc_cap_is_pixfmt_supported(u32 pixelformat)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(vimc_cap_supported_pixftm); i++)
> + if (vimc_cap_supported_pixftm[i] == pixelformat)
> + return true;
> + return false;
> +}
> +
> static int vimc_cap_enum_framesizes(struct file *file, void *fh,
> struct v4l2_frmsizeenum *fsize)
> {
> - const struct vimc_pix_map *vpix;
> -
> if (fsize->index)
> return -EINVAL;
>
> - /* Only accept code in the pix map table */
> - vpix = vimc_pix_map_by_code(fsize->pixel_format);
> - if (!vpix)
> + if (!vimc_cap_is_pixfmt_supported(fsize->pixel_format))
> return -EINVAL;
>
> fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
> @@ -253,6 +279,7 @@ static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count)
> return ret;
> }
>
> + vcap->stream.producer_pixfmt = vcap->format.pixelformat;
> ret = vimc_streamer_s_stream(&vcap->stream, &vcap->ved, 1);
> if (ret) {
> media_pipeline_stop(entity);
> @@ -403,7 +430,6 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master,
> {
> struct v4l2_device *v4l2_dev = master_data;
> struct vimc_platform_data *pdata = comp->platform_data;
> - const struct vimc_pix_map *vpix;
> struct vimc_cap_device *vcap;
> struct video_device *vdev;
> struct vb2_queue *q;
> @@ -458,10 +484,8 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master,
>
> /* Set default frame format */
> vcap->format = fmt_default;
> - vpix = vimc_pix_map_by_pixelformat(vcap->format.pixelformat);
> - vcap->format.bytesperline = vcap->format.width * vpix->bpp;
> - vcap->format.sizeimage = vcap->format.bytesperline *
> - vcap->format.height;
> + v4l2_fill_pixfmt(&vcap->format, vcap->format.pixelformat,
> + vcap->format.width, vcap->format.height);
>
> /* Fill the vimc_ent_device struct */
> vcap->ved.ent = &vcap->vdev.entity;
> diff --git a/drivers/media/platform/vimc/vimc-common.c b/drivers/media/platform/vimc/vimc-common.c
> index 0adbfd8fd26d..b07bbf0564b9 100644
> --- a/drivers/media/platform/vimc/vimc-common.c
> +++ b/drivers/media/platform/vimc/vimc-common.c
> @@ -20,192 +20,127 @@
>
> #include "vimc-common.h"
>
> -/*
> - * NOTE: non-bayer formats need to come first (necessary for enum_mbus_code
> - * in the scaler)
> - */
> -static const struct vimc_pix_map vimc_pix_map_list[] = {
> - /* TODO: add all missing formats */
> -
> - /* RGB formats */
> - {
> - .code = MEDIA_BUS_FMT_BGR888_1X24,
> - .pixelformat = V4L2_PIX_FMT_BGR24,
> - .bpp = 3,
> - .bayer = false,
> - },
> - {
> - .code = MEDIA_BUS_FMT_RGB888_1X24,
> - .pixelformat = V4L2_PIX_FMT_RGB24,
> - .bpp = 3,
> - .bayer = false,
> - },
> - {
> - .code = MEDIA_BUS_FMT_ARGB8888_1X32,
> - .pixelformat = V4L2_PIX_FMT_ARGB32,
> - .bpp = 4,
> - .bayer = false,
> - },
> -
> - /* Bayer formats */
> - {
> - .code = MEDIA_BUS_FMT_SBGGR8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SBGGR8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGBRG8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SGBRG8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGRBG8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SGRBG8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SRGGB8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SRGGB8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SBGGR10_1X10,
> - .pixelformat = V4L2_PIX_FMT_SBGGR10,
> - .bpp = 2,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGBRG10_1X10,
> - .pixelformat = V4L2_PIX_FMT_SGBRG10,
> - .bpp = 2,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGRBG10_1X10,
> - .pixelformat = V4L2_PIX_FMT_SGRBG10,
> - .bpp = 2,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SRGGB10_1X10,
> - .pixelformat = V4L2_PIX_FMT_SRGGB10,
> - .bpp = 2,
> - .bayer = true,
> - },
> -
> - /* 10bit raw bayer a-law compressed to 8 bits */
> - {
> - .code = MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SBGGR10ALAW8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SGBRG10ALAW8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SRGGB10ALAW8,
> - .bpp = 1,
> - .bayer = true,
> - },
> -
> - /* 10bit raw bayer DPCM compressed to 8 bits */
> - {
> - .code = MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SBGGR10DPCM8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SGBRG10DPCM8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
> - .pixelformat = V4L2_PIX_FMT_SRGGB10DPCM8,
> - .bpp = 1,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SBGGR12_1X12,
> - .pixelformat = V4L2_PIX_FMT_SBGGR12,
> - .bpp = 2,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGBRG12_1X12,
> - .pixelformat = V4L2_PIX_FMT_SGBRG12,
> - .bpp = 2,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SGRBG12_1X12,
> - .pixelformat = V4L2_PIX_FMT_SGRBG12,
> - .bpp = 2,
> - .bayer = true,
> - },
> - {
> - .code = MEDIA_BUS_FMT_SRGGB12_1X12,
> - .pixelformat = V4L2_PIX_FMT_SRGGB12,
> - .bpp = 2,
> - .bayer = true,
> - },
> +const u32 vimc_mbus_list[] = {
> + MEDIA_BUS_FMT_FIXED,
> + MEDIA_BUS_FMT_RGB444_1X12,
> + MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE,
> + MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE,
> + MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
> + MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
> + MEDIA_BUS_FMT_RGB565_1X16,
> + MEDIA_BUS_FMT_BGR565_2X8_BE,
> + MEDIA_BUS_FMT_BGR565_2X8_LE,
> + MEDIA_BUS_FMT_RGB565_2X8_BE,
> + MEDIA_BUS_FMT_RGB565_2X8_LE,
> + MEDIA_BUS_FMT_RGB666_1X18,
> + MEDIA_BUS_FMT_RBG888_1X24,
> + MEDIA_BUS_FMT_RGB666_1X24_CPADHI,
> + MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
> + MEDIA_BUS_FMT_BGR888_1X24,
> + MEDIA_BUS_FMT_GBR888_1X24,
> + MEDIA_BUS_FMT_RGB888_1X24,
> + MEDIA_BUS_FMT_RGB888_2X12_BE,
> + MEDIA_BUS_FMT_RGB888_2X12_LE,
> + MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
> + MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
> + MEDIA_BUS_FMT_ARGB8888_1X32,
> + MEDIA_BUS_FMT_RGB888_1X32_PADHI,
> + MEDIA_BUS_FMT_RGB101010_1X30,
> + MEDIA_BUS_FMT_RGB121212_1X36,
> + MEDIA_BUS_FMT_RGB161616_1X48,
> + MEDIA_BUS_FMT_Y8_1X8,
> + MEDIA_BUS_FMT_UV8_1X8,
> + MEDIA_BUS_FMT_UYVY8_1_5X8,
> + MEDIA_BUS_FMT_VYUY8_1_5X8,
> + MEDIA_BUS_FMT_YUYV8_1_5X8,
> + MEDIA_BUS_FMT_YVYU8_1_5X8,
> + MEDIA_BUS_FMT_UYVY8_2X8,
> + MEDIA_BUS_FMT_VYUY8_2X8,
> + MEDIA_BUS_FMT_YUYV8_2X8,
> + MEDIA_BUS_FMT_YVYU8_2X8,
> + MEDIA_BUS_FMT_Y10_1X10,
> + MEDIA_BUS_FMT_Y10_2X8_PADHI_LE,
> + MEDIA_BUS_FMT_UYVY10_2X10,
> + MEDIA_BUS_FMT_VYUY10_2X10,
> + MEDIA_BUS_FMT_YUYV10_2X10,
> + MEDIA_BUS_FMT_YVYU10_2X10,
> + MEDIA_BUS_FMT_Y12_1X12,
> + MEDIA_BUS_FMT_UYVY12_2X12,
> + MEDIA_BUS_FMT_VYUY12_2X12,
> + MEDIA_BUS_FMT_YUYV12_2X12,
> + MEDIA_BUS_FMT_YVYU12_2X12,
> + MEDIA_BUS_FMT_UYVY8_1X16,
> + MEDIA_BUS_FMT_VYUY8_1X16,
> + MEDIA_BUS_FMT_YUYV8_1X16,
> + MEDIA_BUS_FMT_YVYU8_1X16,
> + MEDIA_BUS_FMT_YDYUYDYV8_1X16,
> + MEDIA_BUS_FMT_UYVY10_1X20,
> + MEDIA_BUS_FMT_VYUY10_1X20,
> + MEDIA_BUS_FMT_YUYV10_1X20,
> + MEDIA_BUS_FMT_YVYU10_1X20,
> + MEDIA_BUS_FMT_VUY8_1X24,
> + MEDIA_BUS_FMT_YUV8_1X24,
> + MEDIA_BUS_FMT_UYYVYY8_0_5X24,
> + MEDIA_BUS_FMT_UYVY12_1X24,
> + MEDIA_BUS_FMT_VYUY12_1X24,
> + MEDIA_BUS_FMT_YUYV12_1X24,
> + MEDIA_BUS_FMT_YVYU12_1X24,
> + MEDIA_BUS_FMT_YUV10_1X30,
> + MEDIA_BUS_FMT_UYYVYY10_0_5X30,
> + MEDIA_BUS_FMT_AYUV8_1X32,
> + MEDIA_BUS_FMT_UYYVYY12_0_5X36,
> + MEDIA_BUS_FMT_YUV12_1X36,
> + MEDIA_BUS_FMT_YUV16_1X48,
> + MEDIA_BUS_FMT_UYYVYY16_0_5X48,
> + MEDIA_BUS_FMT_SBGGR8_1X8,
> + MEDIA_BUS_FMT_SGBRG8_1X8,
> + MEDIA_BUS_FMT_SGRBG8_1X8,
> + MEDIA_BUS_FMT_SRGGB8_1X8,
> + MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
> + MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
> + MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
> + MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
> + MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
> + MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
> + MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
> + MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
> + MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE,
> + MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE,
> + MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE,
> + MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE,
> + MEDIA_BUS_FMT_SBGGR10_1X10,
> + MEDIA_BUS_FMT_SGBRG10_1X10,
> + MEDIA_BUS_FMT_SGRBG10_1X10,
> + MEDIA_BUS_FMT_SRGGB10_1X10,
> + MEDIA_BUS_FMT_SBGGR12_1X12,
> + MEDIA_BUS_FMT_SGBRG12_1X12,
> + MEDIA_BUS_FMT_SGRBG12_1X12,
> + MEDIA_BUS_FMT_SRGGB12_1X12,
> + MEDIA_BUS_FMT_SBGGR14_1X14,
> + MEDIA_BUS_FMT_SGBRG14_1X14,
> + MEDIA_BUS_FMT_SGRBG14_1X14,
> + MEDIA_BUS_FMT_SRGGB14_1X14,
> + MEDIA_BUS_FMT_SBGGR16_1X16,
> + MEDIA_BUS_FMT_SGBRG16_1X16,
> + MEDIA_BUS_FMT_SGRBG16_1X16,
> + MEDIA_BUS_FMT_SRGGB16_1X16,
> + MEDIA_BUS_FMT_JPEG_1X8,
> + MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8,
> + MEDIA_BUS_FMT_AHSV8888_1X32,
> };
>
> -const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int i)
> +/* Helper function to enumerate mbus codes */
> +int vimc_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code)
> {
> - if (i >= ARRAY_SIZE(vimc_pix_map_list))
> - return NULL;
> -
> - return &vimc_pix_map_list[i];
> -}
> -EXPORT_SYMBOL_GPL(vimc_pix_map_by_index);
> -
> -const struct vimc_pix_map *vimc_pix_map_by_code(u32 code)
> -{
> - unsigned int i;
> -
> - for (i = 0; i < ARRAY_SIZE(vimc_pix_map_list); i++) {
> - if (vimc_pix_map_list[i].code == code)
> - return &vimc_pix_map_list[i];
> - }
> - return NULL;
> -}
> -EXPORT_SYMBOL_GPL(vimc_pix_map_by_code);
> -
> -const struct vimc_pix_map *vimc_pix_map_by_pixelformat(u32 pixelformat)
> -{
> - unsigned int i;
> + if (code->index >= ARRAY_SIZE(vimc_mbus_list))
> + return -EINVAL;
>
> - for (i = 0; i < ARRAY_SIZE(vimc_pix_map_list); i++) {
> - if (vimc_pix_map_list[i].pixelformat == pixelformat)
> - return &vimc_pix_map_list[i];
> - }
> - return NULL;
> + code->code = vimc_mbus_list[code->index];
> + return 0;
> }
> -EXPORT_SYMBOL_GPL(vimc_pix_map_by_pixelformat);
> +EXPORT_SYMBOL_GPL(vimc_enum_mbus_code);
>
> /* Helper function to allocate and initialize pads */
> struct media_pad *vimc_pads_init(u16 num_pads, const unsigned long *pads_flag)
> @@ -277,15 +212,13 @@ static int vimc_get_mbus_format(struct media_pad *pad,
> struct video_device,
> entity);
> struct vimc_ent_device *ved = video_get_drvdata(vdev);
> - const struct vimc_pix_map *vpix;
> struct v4l2_pix_format vdev_fmt;
>
> if (!ved->vdev_get_format)
> return -ENOIOCTLCMD;
>
> ved->vdev_get_format(ved, &vdev_fmt);
> - vpix = vimc_pix_map_by_pixelformat(vdev_fmt.pixelformat);
> - v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, vpix->code);
> + v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, 0);
> } else {
> return -EINVAL;
> }
> @@ -325,8 +258,12 @@ int vimc_link_validate(struct media_link *link)
> /* The width, height and code must match. */
> if (source_fmt.format.width != sink_fmt.format.width
> || source_fmt.format.height != sink_fmt.format.height
> - || source_fmt.format.code != sink_fmt.format.code)
> + || (source_fmt.format.code && sink_fmt.format.code &&
> + source_fmt.format.code != sink_fmt.format.code)) {
> + pr_err("vimc: format doesn't match in link %s->%s\n",
> + link->source->entity->name, link->sink->entity->name);
> return -EPIPE;
> + }
>
> /*
> * The field order must match, or the sink field order must be NONE
> diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h
> index 07987eab988f..30ce902ace4d 100644
> --- a/drivers/media/platform/vimc/vimc-common.h
> +++ b/drivers/media/platform/vimc/vimc-common.h
> @@ -22,6 +22,8 @@
> #include <media/media-device.h>
> #include <media/v4l2-device.h>
>
> +#include "vimc-streamer.h"
> +
> #define VIMC_PDEV_NAME "vimc"
>
> /* VIMC-specific controls */
> @@ -115,12 +117,23 @@ struct vimc_pix_map {
> struct vimc_ent_device {
> struct media_entity *ent;
> struct media_pad *pads;
> + struct vimc_stream *stream;
> void * (*process_frame)(struct vimc_ent_device *ved,
> const void *frame);
> void (*vdev_get_format)(struct vimc_ent_device *ved,
> struct v4l2_pix_format *fmt);
> };
>
> +/**
> + * vimc_enum_mbus_code - enumerate mbus codes
> + *
> + * Helper function to be pluged in .enum_mbus_code from
> + * struct v4l2_subdev_pad_ops.
> + */
> +int vimc_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code);
> +
> /**
> * vimc_pads_init - initialize pads
> *
> diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
> index 20826f209731..51b411739e27 100644
> --- a/drivers/media/platform/vimc/vimc-debayer.c
> +++ b/drivers/media/platform/vimc/vimc-debayer.c
> @@ -26,6 +26,9 @@
> #include "vimc-common.h"
>
> #define VIMC_DEB_DRV_NAME "vimc-debayer"
> +/* This module only supports tranforming a bayer format to V4L2_PIX_FMT_RGB24 */
> +#define VIMC_DEB_SRC_PIXFMT V4L2_PIX_FMT_RGB24
> +#define VIMC_DEB_SRC_MBUS_FMT_DEFAULT MEDIA_BUS_FMT_RGB888_1X24
>
> static unsigned int deb_mean_win_size = 3;
> module_param(deb_mean_win_size, uint, 0000);
> @@ -44,6 +47,7 @@ enum vimc_deb_rgb_colors {
> };
>
> struct vimc_deb_pix_map {
> + u32 pixelformat;
> u32 code;
> enum vimc_deb_rgb_colors order[2][2];
> };
> @@ -73,61 +77,73 @@ static const struct v4l2_mbus_framefmt sink_fmt_default = {
>
> static const struct vimc_deb_pix_map vimc_deb_pix_map_list[] = {
> {
> + .pixelformat = V4L2_PIX_FMT_SBGGR8,
> .code = MEDIA_BUS_FMT_SBGGR8_1X8,
> .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
> { VIMC_DEB_GREEN, VIMC_DEB_RED } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SGBRG8,
> .code = MEDIA_BUS_FMT_SGBRG8_1X8,
> .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
> { VIMC_DEB_RED, VIMC_DEB_GREEN } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SGRBG8,
> .code = MEDIA_BUS_FMT_SGRBG8_1X8,
> .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
> { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SRGGB8,
> .code = MEDIA_BUS_FMT_SRGGB8_1X8,
> .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
> { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SBGGR10,
> .code = MEDIA_BUS_FMT_SBGGR10_1X10,
> .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
> { VIMC_DEB_GREEN, VIMC_DEB_RED } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SGBRG10,
> .code = MEDIA_BUS_FMT_SGBRG10_1X10,
> .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
> { VIMC_DEB_RED, VIMC_DEB_GREEN } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SGRBG10,
> .code = MEDIA_BUS_FMT_SGRBG10_1X10,
> .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
> { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SRGGB10,
> .code = MEDIA_BUS_FMT_SRGGB10_1X10,
> .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
> { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SBGGR12,
> .code = MEDIA_BUS_FMT_SBGGR12_1X12,
> .order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
> { VIMC_DEB_GREEN, VIMC_DEB_RED } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SGBRG12,
> .code = MEDIA_BUS_FMT_SGBRG12_1X12,
> .order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
> { VIMC_DEB_RED, VIMC_DEB_GREEN } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SGRBG12,
> .code = MEDIA_BUS_FMT_SGRBG12_1X12,
> .order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
> { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
> },
> {
> + .pixelformat = V4L2_PIX_FMT_SRGGB12,
> .code = MEDIA_BUS_FMT_SRGGB12_1X12,
> .order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
> { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
> @@ -168,41 +184,32 @@ static int vimc_deb_enum_mbus_code(struct v4l2_subdev *sd,
> struct v4l2_subdev_pad_config *cfg,
> struct v4l2_subdev_mbus_code_enum *code)
> {
> - /* We only support one format for source pads */
> - if (IS_SRC(code->pad)) {
> - struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
> -
> - if (code->index)
> - return -EINVAL;
> -
> - code->code = vdeb->src_code;
> - } else {
> + /* For the sink pad we only support codes in the map_list */
> + if (IS_SINK(code->pad)) {
> if (code->index >= ARRAY_SIZE(vimc_deb_pix_map_list))
> return -EINVAL;
>
> code->code = vimc_deb_pix_map_list[code->index].code;
> + return 0;
> }
>
> - return 0;
> + return vimc_enum_mbus_code(sd, cfg, code);
> }
>
> static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
> struct v4l2_subdev_pad_config *cfg,
> struct v4l2_subdev_frame_size_enum *fse)
> {
> - struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
> -
> if (fse->index)
> return -EINVAL;
>
> + /* For the sink pad we only support codes in the map_list */
> if (IS_SINK(fse->pad)) {
> const struct vimc_deb_pix_map *vpix =
> vimc_deb_pix_map_by_code(fse->code);
>
> if (!vpix)
> return -EINVAL;
> - } else if (fse->code != vdeb->src_code) {
> - return -EINVAL;
> }
>
> fse->min_width = VIMC_FRAME_MIN_WIDTH;
> @@ -270,11 +277,11 @@ static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
>
> /*
> * Do not change the format of the source pad,
> - * it is propagated from the sink
> + * it is propagated from the sink (except for the code)
> */
> if (IS_SRC(fmt->pad)) {
> + vdeb->src_code = fmt->format.code;
> fmt->format = *sink_fmt;
> - /* TODO: Add support for other formats */
> fmt->format.code = vdeb->src_code;
> } else {
> /* Set the new format in the sink pad */
> @@ -306,7 +313,7 @@ static const struct v4l2_subdev_pad_ops vimc_deb_pad_ops = {
> .set_fmt = vimc_deb_set_fmt,
> };
>
> -static void vimc_deb_set_rgb_mbus_fmt_rgb888_1x24(struct vimc_deb_device *vdeb,
> +static void vimc_deb_set_rgb_pix_rgb24(struct vimc_deb_device *vdeb,
> unsigned int lin,
> unsigned int col,
> unsigned int rgb[3])
> @@ -323,25 +330,38 @@ static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
> struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
>
> if (enable) {
> - const struct vimc_pix_map *vpix;
> + u32 src_pixelformat = vdeb->ved.stream->producer_pixfmt;
> + const struct v4l2_format_info *pix_info;
> unsigned int frame_size;
>
> if (vdeb->src_frame)
> return 0;
>
> - /* Calculate the frame size of the source pad */
> - vpix = vimc_pix_map_by_code(vdeb->src_code);
> - frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
> - vpix->bpp;
> -
> - /* Save the bytes per pixel of the sink */
> - vpix = vimc_pix_map_by_code(vdeb->sink_fmt.code);
> - vdeb->sink_bpp = vpix->bpp;
> + /* We only support translating bayer to RGB24 */
> + if (src_pixelformat != V4L2_PIX_FMT_RGB24) {
> + dev_err(vdeb->dev,
> + "translating to pixfmt (%s) is not supported\n",
> + v4l2_get_fourcc_name(src_pixelformat));
> + return -EINVAL;
> + }
>
> /* Get the corresponding pixel map from the table */
> vdeb->sink_pix_map =
> vimc_deb_pix_map_by_code(vdeb->sink_fmt.code);
>
> + /* Request bayer format from the pipeline for the sink pad */
> + vdeb->ved.stream->producer_pixfmt =
> + vdeb->sink_pix_map->pixelformat;
> +
> + /* Calculate frame_size of the source */
> + pix_info = v4l2_format_info(src_pixelformat);
> + frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
> + pix_info->bpp[0];
> +
> + /* Get bpp from the sink */
> + pix_info = v4l2_format_info(vdeb->sink_pix_map->pixelformat);
> + vdeb->sink_bpp = pix_info->bpp[0];
> +
> /*
> * Allocate the frame buffer. Use vmalloc to be able to
> * allocate a large amount of memory
> @@ -542,14 +562,14 @@ static int vimc_deb_comp_bind(struct device *comp, struct device *master,
>
> /* Initialize the frame format */
> vdeb->sink_fmt = sink_fmt_default;
> + vdeb->src_code = VIMC_DEB_SRC_MBUS_FMT_DEFAULT;
> /*
> * TODO: Add support for more output formats, we only support
> - * RGB888 for now
> + * RGB24 for now.
> * NOTE: the src format is always the same as the sink, except
> * for the code
> */
> - vdeb->src_code = MEDIA_BUS_FMT_RGB888_1X24;
> - vdeb->set_rgb_src = vimc_deb_set_rgb_mbus_fmt_rgb888_1x24;
> + vdeb->set_rgb_src = vimc_deb_set_rgb_pix_rgb24;
>
> return 0;
> }
> diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
> index 2028afa4ef7a..245116b1c241 100644
> --- a/drivers/media/platform/vimc/vimc-scaler.c
> +++ b/drivers/media/platform/vimc/vimc-scaler.c
> @@ -35,6 +35,12 @@ MODULE_PARM_DESC(sca_mult, " the image size multiplier");
> #define IS_SRC(pad) (pad)
> #define MAX_ZOOM 8
>
> +static const u32 vimc_sca_supported_pixftm[] = {
> + V4L2_PIX_FMT_BGR24,
> + V4L2_PIX_FMT_RGB24,
> + V4L2_PIX_FMT_ARGB32,
> +};
> +
> struct vimc_sca_device {
> struct vimc_ent_device ved;
> struct v4l2_subdev sd;
> @@ -57,6 +63,16 @@ static const struct v4l2_mbus_framefmt sink_fmt_default = {
> .colorspace = V4L2_COLORSPACE_DEFAULT,
> };
>
> +static bool vimc_sca_is_pixfmt_supported(u32 pixelformat)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(vimc_sca_supported_pixftm); i++)
> + if (vimc_sca_supported_pixftm[i] == pixelformat)
> + return true;
> + return false;
> +}
> +
> static int vimc_sca_init_cfg(struct v4l2_subdev *sd,
> struct v4l2_subdev_pad_config *cfg)
> {
> @@ -76,35 +92,13 @@ static int vimc_sca_init_cfg(struct v4l2_subdev *sd,
> return 0;
> }
>
> -static int vimc_sca_enum_mbus_code(struct v4l2_subdev *sd,
> - struct v4l2_subdev_pad_config *cfg,
> - struct v4l2_subdev_mbus_code_enum *code)
> -{
> - const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
> -
> - /* We don't support bayer format */
> - if (!vpix || vpix->bayer)
> - return -EINVAL;
> -
> - code->code = vpix->code;
> -
> - return 0;
> -}
> -
> static int vimc_sca_enum_frame_size(struct v4l2_subdev *sd,
> struct v4l2_subdev_pad_config *cfg,
> struct v4l2_subdev_frame_size_enum *fse)
> {
> - const struct vimc_pix_map *vpix;
> -
> if (fse->index)
> return -EINVAL;
>
> - /* Only accept code in the pix map table in non bayer format */
> - vpix = vimc_pix_map_by_code(fse->code);
> - if (!vpix || vpix->bayer)
> - return -EINVAL;
> -
> fse->min_width = VIMC_FRAME_MIN_WIDTH;
> fse->min_height = VIMC_FRAME_MIN_HEIGHT;
>
> @@ -141,13 +135,6 @@ static int vimc_sca_get_fmt(struct v4l2_subdev *sd,
>
> static void vimc_sca_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
> {
> - const struct vimc_pix_map *vpix;
> -
> - /* Only accept code in the pix map table in non bayer format */
> - vpix = vimc_pix_map_by_code(fmt->code);
> - if (!vpix || vpix->bayer)
> - fmt->code = sink_fmt_default.code;
> -
> fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
> VIMC_FRAME_MAX_WIDTH) & ~1;
> fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
> @@ -208,7 +195,7 @@ static int vimc_sca_set_fmt(struct v4l2_subdev *sd,
>
> static const struct v4l2_subdev_pad_ops vimc_sca_pad_ops = {
> .init_cfg = vimc_sca_init_cfg,
> - .enum_mbus_code = vimc_sca_enum_mbus_code,
> + .enum_mbus_code = vimc_enum_mbus_code,
> .enum_frame_size = vimc_sca_enum_frame_size,
> .get_fmt = vimc_sca_get_fmt,
> .set_fmt = vimc_sca_set_fmt,
> @@ -219,15 +206,22 @@ static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
> struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
>
> if (enable) {
> - const struct vimc_pix_map *vpix;
> + u32 pixelformat = vsca->ved.stream->producer_pixfmt;
> + const struct v4l2_format_info *pix_info;
> unsigned int frame_size;
>
> if (vsca->src_frame)
> return 0;
>
> + if (!vimc_sca_is_pixfmt_supported(pixelformat)) {
> + dev_err(vsca->dev, "pixfmt (%s) is not supported\n",
> + v4l2_get_fourcc_name(pixelformat));
> + return -EINVAL;
> + }
> +
> /* Save the bytes per pixel of the sink */
> - vpix = vimc_pix_map_by_code(vsca->sink_fmt.code);
> - vsca->bpp = vpix->bpp;
> + pix_info = v4l2_format_info(pixelformat);
> + vsca->bpp = pix_info->bpp[0];
>
> /* Calculate the width in bytes of the src frame */
> vsca->src_line_size = vsca->sink_fmt.width *
> diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
> index d7891d3bbeaa..75df96cc5e39 100644
> --- a/drivers/media/platform/vimc/vimc-sensor.c
> +++ b/drivers/media/platform/vimc/vimc-sensor.c
> @@ -65,34 +65,13 @@ static int vimc_sen_init_cfg(struct v4l2_subdev *sd,
> return 0;
> }
>
> -static int vimc_sen_enum_mbus_code(struct v4l2_subdev *sd,
> - struct v4l2_subdev_pad_config *cfg,
> - struct v4l2_subdev_mbus_code_enum *code)
> -{
> - const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
> -
> - if (!vpix)
> - return -EINVAL;
> -
> - code->code = vpix->code;
> -
> - return 0;
> -}
> -
> static int vimc_sen_enum_frame_size(struct v4l2_subdev *sd,
> struct v4l2_subdev_pad_config *cfg,
> struct v4l2_subdev_frame_size_enum *fse)
> {
> - const struct vimc_pix_map *vpix;
> -
> if (fse->index)
> return -EINVAL;
>
> - /* Only accept code in the pix map table */
> - vpix = vimc_pix_map_by_code(fse->code);
> - if (!vpix)
> - return -EINVAL;
> -
> fse->min_width = VIMC_FRAME_MIN_WIDTH;
> fse->max_width = VIMC_FRAME_MAX_WIDTH;
> fse->min_height = VIMC_FRAME_MIN_HEIGHT;
> @@ -117,14 +96,17 @@ static int vimc_sen_get_fmt(struct v4l2_subdev *sd,
>
> static void vimc_sen_tpg_s_format(struct vimc_sen_device *vsen)
> {
> - const struct vimc_pix_map *vpix =
> - vimc_pix_map_by_code(vsen->mbus_format.code);
> + u32 pixelformat = vsen->ved.stream->producer_pixfmt;
> + const struct v4l2_format_info *pix_info;
> +
> + pix_info = v4l2_format_info(pixelformat);
>
> tpg_reset_source(&vsen->tpg, vsen->mbus_format.width,
> vsen->mbus_format.height, vsen->mbus_format.field);
> - tpg_s_bytesperline(&vsen->tpg, 0, vsen->mbus_format.width * vpix->bpp);
> + tpg_s_bytesperline(&vsen->tpg, 0,
> + vsen->mbus_format.width * pix_info->bpp[0]);
> tpg_s_buf_height(&vsen->tpg, vsen->mbus_format.height);
> - tpg_s_fourcc(&vsen->tpg, vpix->pixelformat);
> + tpg_s_fourcc(&vsen->tpg, pixelformat);
> /* TODO: add support for V4L2_FIELD_ALTERNATE */
> tpg_s_field(&vsen->tpg, vsen->mbus_format.field, false);
> tpg_s_colorspace(&vsen->tpg, vsen->mbus_format.colorspace);
> @@ -135,13 +117,6 @@ static void vimc_sen_tpg_s_format(struct vimc_sen_device *vsen)
>
> static void vimc_sen_adjust_fmt(struct v4l2_mbus_framefmt *fmt)
> {
> - const struct vimc_pix_map *vpix;
> -
> - /* Only accept code in the pix map table */
> - vpix = vimc_pix_map_by_code(fmt->code);
> - if (!vpix)
> - fmt->code = fmt_default.code;
> -
> fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
> VIMC_FRAME_MAX_WIDTH) & ~1;
> fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
> @@ -193,7 +168,7 @@ static int vimc_sen_set_fmt(struct v4l2_subdev *sd,
>
> static const struct v4l2_subdev_pad_ops vimc_sen_pad_ops = {
> .init_cfg = vimc_sen_init_cfg,
> - .enum_mbus_code = vimc_sen_enum_mbus_code,
> + .enum_mbus_code = vimc_enum_mbus_code,
> .enum_frame_size = vimc_sen_enum_frame_size,
> .get_fmt = vimc_sen_get_fmt,
> .set_fmt = vimc_sen_set_fmt,
> @@ -215,7 +190,8 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
> container_of(sd, struct vimc_sen_device, sd);
>
> if (enable) {
> - const struct vimc_pix_map *vpix;
> + u32 pixelformat = vsen->ved.stream->producer_pixfmt;
> + const struct v4l2_format_info *pix_info;
> unsigned int frame_size;
>
> if (vsen->kthread_sen)
> @@ -223,8 +199,8 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
> return 0;
>
> /* Calculate the frame size */
> - vpix = vimc_pix_map_by_code(vsen->mbus_format.code);
> - frame_size = vsen->mbus_format.width * vpix->bpp *
> + pix_info = v4l2_format_info(pixelformat);
> + frame_size = vsen->mbus_format.width * pix_info->bpp[0] *
> vsen->mbus_format.height;
>
> /*
> diff --git a/drivers/media/platform/vimc/vimc-streamer.c b/drivers/media/platform/vimc/vimc-streamer.c
> index 5a3bda62fbc8..c19093b6c787 100644
> --- a/drivers/media/platform/vimc/vimc-streamer.c
> +++ b/drivers/media/platform/vimc/vimc-streamer.c
> @@ -52,6 +52,7 @@ static void vimc_streamer_pipeline_terminate(struct vimc_stream *stream)
> while (stream->pipe_size) {
> stream->pipe_size--;
> ved = stream->ved_pipeline[stream->pipe_size];
> + ved->stream = NULL;
> stream->ved_pipeline[stream->pipe_size] = NULL;
>
> if (!is_media_entity_v4l2_subdev(ved->ent))
> @@ -87,6 +88,7 @@ static int vimc_streamer_pipeline_init(struct vimc_stream *stream,
> return -EINVAL;
> }
> stream->ved_pipeline[stream->pipe_size++] = ved;
> + ved->stream = stream;
>
> if (is_media_entity_v4l2_subdev(ved->ent)) {
> sd = media_entity_to_v4l2_subdev(ved->ent);
> diff --git a/drivers/media/platform/vimc/vimc-streamer.h b/drivers/media/platform/vimc/vimc-streamer.h
> index a7c5ac5ace4f..2b3667408794 100644
> --- a/drivers/media/platform/vimc/vimc-streamer.h
> +++ b/drivers/media/platform/vimc/vimc-streamer.h
> @@ -25,6 +25,11 @@
> * processed in the pipeline.
> * @pipe_size: size of @ved_pipeline
> * @kthread: thread that generates the frames of the stream.
> + * @producer_pixfmt: the pixel format requested from the pipeline. This must
> + * be set just before calling vimc_streamer_s_stream(ent, 1). This value is
> + * propagated up to the source of the base image (usually a sensor node) and
> + * can be modified by entities during s_stream callback to request a different
> + * format from rest of the pipeline.
> *
> * When the user call stream_on in a video device, struct vimc_stream is
> * used to keep track of all entities and subdevices that generates and
> @@ -35,6 +40,7 @@ struct vimc_stream {
> struct vimc_ent_device *ved_pipeline[VIMC_STREAMER_PIPELINE_MAX_SIZE];
> unsigned int pipe_size;
> struct task_struct *kthread;
> + u32 producer_pixfmt;
> };
>
> /**
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