Date: Thu, 20 Jun 2024 14:04:15 +0200
From: Hans Verkuil <hverkuil-cisco@...all.nl>
To: Changhuang Liang <changhuang.liang@...rfivetech.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Matthias Brugger <matthias.bgg@...il.com>, Ming Qian <ming.qian@....com>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Nicolas Dufresne <nicolas.dufresne@...labora.com>,
 Benjamin Gaignard <benjamin.gaignard@...labora.com>,
 Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>,
 Mingjia Zhang <mingjia.zhang@...iatek.com>, Marvin Lin <milkfafa@...il.com>
Cc: Jack Zhu <jack.zhu@...rfivetech.com>, linux-media@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev
Subject: Re: [PATCH v4 08/13] staging: media: starfive: Add for StarFive ISP
 3A SC

On 02/04/2024 12:00, Changhuang Liang wrote:
> Register ISP 3A "capture_scd" video device to receive statistics
> collection data.
> 
> Signed-off-by: Changhuang Liang <changhuang.liang@...rfivetech.com>
> ---
>  .../staging/media/starfive/camss/stf-buffer.h |   1 +
>  .../staging/media/starfive/camss/stf-camss.c  |  13 ++
>  .../media/starfive/camss/stf-capture.c        |  21 ++-
>  .../media/starfive/camss/stf-isp-hw-ops.c     |  66 ++++++++
>  .../staging/media/starfive/camss/stf-isp.h    |  23 +++
>  .../staging/media/starfive/camss/stf-video.c  | 143 +++++++++++++++++-
>  .../staging/media/starfive/camss/stf-video.h  |   1 +
>  7 files changed, 259 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/staging/media/starfive/camss/stf-buffer.h b/drivers/staging/media/starfive/camss/stf-buffer.h
> index 9d1670fb05ed..727d00617448 100644
> --- a/drivers/staging/media/starfive/camss/stf-buffer.h
> +++ b/drivers/staging/media/starfive/camss/stf-buffer.h
> @@ -23,6 +23,7 @@ enum stf_v_state {
>  struct stfcamss_buffer {
>  	struct vb2_v4l2_buffer vb;
>  	dma_addr_t addr[2];
> +	void *vaddr;
>  	struct list_head queue;
>  };
>  
> diff --git a/drivers/staging/media/starfive/camss/stf-camss.c b/drivers/staging/media/starfive/camss/stf-camss.c
> index 323aa70fdeaf..3fe4e3332719 100644
> --- a/drivers/staging/media/starfive/camss/stf-camss.c
> +++ b/drivers/staging/media/starfive/camss/stf-camss.c
> @@ -126,6 +126,7 @@ static int stfcamss_of_parse_ports(struct stfcamss *stfcamss)
>  static int stfcamss_register_devs(struct stfcamss *stfcamss)
>  {
>  	struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
> +	struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
>  	struct stf_isp_dev *isp_dev = &stfcamss->isp_dev;
>  	int ret;
>  
> @@ -150,8 +151,18 @@ static int stfcamss_register_devs(struct stfcamss *stfcamss)
>  
>  	cap_yuv->video.source_subdev = &isp_dev->subdev;
>  
> +	ret = media_create_pad_link(&isp_dev->subdev.entity, STF_ISP_PAD_SRC_SCD,
> +				    &cap_scd->video.vdev.entity, 0, 0);
> +	if (ret)
> +		goto err_rm_links0;
> +
> +	cap_scd->video.source_subdev = &isp_dev->subdev;
> +
>  	return ret;
>  
> +err_rm_links0:
> +	media_entity_remove_links(&isp_dev->subdev.entity);
> +	media_entity_remove_links(&cap_yuv->video.vdev.entity);
>  err_cap_unregister:
>  	stf_capture_unregister(stfcamss);
>  err_isp_unregister:
> @@ -163,10 +174,12 @@ static int stfcamss_register_devs(struct stfcamss *stfcamss)
>  static void stfcamss_unregister_devs(struct stfcamss *stfcamss)
>  {
>  	struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
> +	struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
>  	struct stf_isp_dev *isp_dev = &stfcamss->isp_dev;
>  
>  	media_entity_remove_links(&isp_dev->subdev.entity);
>  	media_entity_remove_links(&cap_yuv->video.vdev.entity);
> +	media_entity_remove_links(&cap_scd->video.vdev.entity);
>  
>  	stf_isp_unregister(&stfcamss->isp_dev);
>  	stf_capture_unregister(stfcamss);
> diff --git a/drivers/staging/media/starfive/camss/stf-capture.c b/drivers/staging/media/starfive/camss/stf-capture.c
> index 75f6ef405e61..328b8c6e351d 100644
> --- a/drivers/staging/media/starfive/camss/stf-capture.c
> +++ b/drivers/staging/media/starfive/camss/stf-capture.c
> @@ -12,6 +12,7 @@
>  static const char * const stf_cap_names[] = {
>  	"capture_raw",
>  	"capture_yuv",
> +	"capture_scd",
>  };
>  
>  static const struct stfcamss_format_info stf_wr_fmts[] = {
> @@ -55,6 +56,14 @@ static const struct stfcamss_format_info stf_isp_fmts[] = {
>  	},
>  };
>  
> +/* 3A Statistics Collection Data */
> +static const struct stfcamss_format_info stf_isp_scd_fmts[] = {
> +	{
> +		.code = MEDIA_BUS_FMT_METADATA_FIXED,
> +		.pixelformat = V4L2_META_FMT_STF_ISP_STAT_3A,
> +	},
> +};
> +
>  static inline struct stf_capture *to_stf_capture(struct stfcamss_video *video)
>  {
>  	return container_of(video, struct stf_capture, video);
> @@ -84,6 +93,8 @@ static void stf_init_addrs(struct stfcamss_video *video)
>  		stf_set_raw_addr(video->stfcamss, addr0);
>  	else if (cap->type == STF_CAPTURE_YUV)
>  		stf_set_yuv_addr(video->stfcamss, addr0, addr1);
> +	else
> +		stf_set_scd_addr(video->stfcamss, addr0, addr1, TYPE_AWB);
>  }
>  
>  static void stf_cap_s_cfg(struct stfcamss_video *video)
> @@ -227,18 +238,24 @@ static void stf_capture_init(struct stfcamss *stfcamss, struct stf_capture *cap)
>  	INIT_LIST_HEAD(&cap->buffers.ready_bufs);
>  	spin_lock_init(&cap->buffers.lock);
>  
> -	cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
>  	cap->video.stfcamss = stfcamss;
>  	cap->video.bpl_alignment = 16 * 8;
>  
>  	if (cap->type == STF_CAPTURE_RAW) {
> +		cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
>  		cap->video.formats = stf_wr_fmts;
>  		cap->video.nformats = ARRAY_SIZE(stf_wr_fmts);
>  		cap->video.bpl_alignment = 8;
>  	} else if (cap->type == STF_CAPTURE_YUV) {
> +		cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
>  		cap->video.formats = stf_isp_fmts;
>  		cap->video.nformats = ARRAY_SIZE(stf_isp_fmts);
>  		cap->video.bpl_alignment = 1;
> +	} else {
> +		cap->video.type = V4L2_BUF_TYPE_META_CAPTURE;
> +		cap->video.formats = stf_isp_scd_fmts;
> +		cap->video.nformats = ARRAY_SIZE(stf_isp_scd_fmts);
> +		cap->video.bpl_alignment = 16 * 8;
>  	}
>  }
>  
> @@ -362,9 +379,11 @@ void stf_capture_unregister(struct stfcamss *stfcamss)
>  {
>  	struct stf_capture *cap_raw = &stfcamss->captures[STF_CAPTURE_RAW];
>  	struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
> +	struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
>  
>  	stf_capture_unregister_one(cap_raw);
>  	stf_capture_unregister_one(cap_yuv);
> +	stf_capture_unregister_one(cap_scd);
>  }
>  
>  int stf_capture_register(struct stfcamss *stfcamss,
> diff --git a/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c b/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
> index 6b3966ca18bf..abdfa4417145 100644
> --- a/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
> +++ b/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
> @@ -451,11 +451,57 @@ void stf_set_yuv_addr(struct stfcamss *stfcamss,
>  	stf_isp_reg_write(stfcamss, ISP_REG_UV_PLANE_START_ADDR, uv_addr);
>  }
>  
> +static enum stf_isp_type_scd stf_isp_get_scd_type(struct stfcamss *stfcamss)
> +{
> +	int val;
> +
> +	val = stf_isp_reg_read(stfcamss, ISP_REG_SC_CFG_1);
> +	return (enum stf_isp_type_scd)(val & ISP_SC_SEL_MASK) >> 30;
> +}
> +
> +void stf_set_scd_addr(struct stfcamss *stfcamss,
> +		      dma_addr_t yhist_addr, dma_addr_t scd_addr,
> +		      enum stf_isp_type_scd type_scd)
> +{
> +	stf_isp_reg_set_bit(stfcamss, ISP_REG_SC_CFG_1, ISP_SC_SEL_MASK,
> +			    SEL_TYPE(type_scd));
> +	stf_isp_reg_write(stfcamss, ISP_REG_SCD_CFG_0, scd_addr);
> +	stf_isp_reg_write(stfcamss, ISP_REG_YHIST_CFG_4, yhist_addr);
> +}
> +
> +static void stf_isp_fill_yhist(struct stfcamss *stfcamss, void *vaddr)
> +{
> +	struct jh7110_isp_sc_buffer *sc = (struct jh7110_isp_sc_buffer *)vaddr;
> +	u32 reg_addr = ISP_REG_YHIST_ACC_0;
> +	u32 i;
> +
> +	for (i = 0; i < 64; i++, reg_addr += 4)
> +		sc->y_histogram[i] = stf_isp_reg_read(stfcamss, reg_addr);
> +}
> +
> +static void stf_isp_fill_flag(struct stfcamss *stfcamss, void *vaddr,
> +			      enum stf_isp_type_scd *type_scd)
> +{
> +	struct jh7110_isp_sc_buffer *sc = (struct jh7110_isp_sc_buffer *)vaddr;
> +
> +	*type_scd = stf_isp_get_scd_type(stfcamss);
> +	if (*type_scd == TYPE_AWB) {
> +		sc->flag = JH7110_ISP_SC_FALG_AWB;
> +		*type_scd = TYPE_OECF;
> +	} else {
> +		sc->flag = JH7110_ISP_SC_FALG_AE_AF;
> +		*type_scd = TYPE_AWB;
> +	}
> +}
> +
>  irqreturn_t stf_line_irq_handler(int irq, void *priv)
>  {
>  	struct stfcamss *stfcamss = priv;
>  	struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
> +	struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
>  	struct stfcamss_buffer *change_buf;
> +	enum stf_isp_type_scd type_scd;
> +	u32 value;
>  	u32 status;
>  
>  	status = stf_isp_reg_read(stfcamss, ISP_REG_ISP_CTRL_0);
> @@ -467,6 +513,17 @@ irqreturn_t stf_line_irq_handler(int irq, void *priv)
>  					stf_set_yuv_addr(stfcamss, change_buf->addr[0],
>  							 change_buf->addr[1]);
>  			}
> +
> +			value = stf_isp_reg_read(stfcamss, ISP_REG_CSI_MODULE_CFG);
> +			if (value & CSI_SC_EN) {
> +				change_buf = stf_change_buffer(&cap_scd->buffers);
> +				if (change_buf) {
> +					stf_isp_fill_flag(stfcamss, change_buf->vaddr,
> +							  &type_scd);
> +					stf_set_scd_addr(stfcamss, change_buf->addr[0],
> +							 change_buf->addr[1], type_scd);
> +				}
> +			}
>  		}
>  
>  		stf_isp_reg_set_bit(stfcamss, ISP_REG_CSIINTS,
> @@ -485,6 +542,7 @@ irqreturn_t stf_isp_irq_handler(int irq, void *priv)
>  {
>  	struct stfcamss *stfcamss = priv;
>  	struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
> +	struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
>  	struct stfcamss_buffer *ready_buf;
>  	u32 status;
>  
> @@ -496,6 +554,14 @@ irqreturn_t stf_isp_irq_handler(int irq, void *priv)
>  				vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
>  		}
>  
> +		if (status & ISPC_SC) {
> +			ready_buf = stf_buf_done(&cap_scd->buffers);
> +			if (ready_buf) {
> +				stf_isp_fill_yhist(stfcamss, ready_buf->vaddr);
> +				vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
> +			}
> +		}
> +
>  		stf_isp_reg_write(stfcamss, ISP_REG_ISP_CTRL_0,
>  				  (status & ~ISPC_INT_ALL_MASK) |
>  				  ISPC_ISP | ISPC_CSI | ISPC_SC);
> diff --git a/drivers/staging/media/starfive/camss/stf-isp.h b/drivers/staging/media/starfive/camss/stf-isp.h
> index fcda0502e3b0..0af7b367e57a 100644
> --- a/drivers/staging/media/starfive/camss/stf-isp.h
> +++ b/drivers/staging/media/starfive/camss/stf-isp.h
> @@ -10,6 +10,7 @@
>  #ifndef STF_ISP_H
>  #define STF_ISP_H
>  
> +#include <linux/jh7110-isp.h>
>  #include <media/v4l2-subdev.h>
>  
>  #include "stf-video.h"
> @@ -107,6 +108,12 @@
>  #define Y_COOR(y)				((y) << 16)
>  #define X_COOR(x)				((x) << 0)
>  
> +#define ISP_REG_SCD_CFG_0			0x098
> +
> +#define ISP_REG_SC_CFG_1			0x0bc
> +#define ISP_SC_SEL_MASK				GENMASK(31, 30)
> +#define SEL_TYPE(n)				((n) << 30)
> +
>  #define ISP_REG_LCCF_CFG_2			0x0e0
>  #define ISP_REG_LCCF_CFG_3			0x0e4
>  #define ISP_REG_LCCF_CFG_4			0x0e8
> @@ -305,6 +312,10 @@
>  #define DNRM_F(n)				((n) << 16)
>  #define CCM_M_DAT(n)				((n) << 0)
>  
> +#define ISP_REG_YHIST_CFG_4			0xcd8
> +
> +#define ISP_REG_YHIST_ACC_0			0xd00
> +
>  #define ISP_REG_GAMMA_VAL0			0xe00
>  #define ISP_REG_GAMMA_VAL1			0xe04
>  #define ISP_REG_GAMMA_VAL2			0xe08
> @@ -389,6 +400,15 @@
>  #define IMAGE_MAX_WIDTH				1920
>  #define IMAGE_MAX_HEIGH				1080
>  
> +#define ISP_YHIST_BUFFER_SIZE			(64 * sizeof(__u32))
> +
> +enum stf_isp_type_scd {
> +	TYPE_DEC = 0,
> +	TYPE_OBC,
> +	TYPE_OECF,
> +	TYPE_AWB,
> +};
> +
>  /* pad id for media framework */
>  enum stf_isp_pad_id {
>  	STF_ISP_PAD_SINK = 0,
> @@ -429,5 +449,8 @@ int stf_isp_unregister(struct stf_isp_dev *isp_dev);
>  
>  void stf_set_yuv_addr(struct stfcamss *stfcamss,
>  		      dma_addr_t y_addr, dma_addr_t uv_addr);
> +void stf_set_scd_addr(struct stfcamss *stfcamss,
> +		      dma_addr_t yhist_addr, dma_addr_t scd_addr,
> +		      enum stf_isp_type_scd type_scd);
>  
>  #endif /* STF_ISP_H */
> diff --git a/drivers/staging/media/starfive/camss/stf-video.c b/drivers/staging/media/starfive/camss/stf-video.c
> index 989b5e82bae9..d9e51d4e2004 100644
> --- a/drivers/staging/media/starfive/camss/stf-video.c
> +++ b/drivers/staging/media/starfive/camss/stf-video.c
> @@ -125,6 +125,14 @@ static int stf_video_init_format(struct stfcamss_video *video)
>  	return 0;
>  }
>  
> +static int stf_video_scd_init_format(struct stfcamss_video *video)
> +{
> +	video->active_fmt.fmt.meta.dataformat = video->formats[0].pixelformat;
> +	video->active_fmt.fmt.meta.buffersize = sizeof(struct jh7110_isp_sc_buffer);
> +
> +	return 0;
> +}
> +
>  /* -----------------------------------------------------------------------------
>   * Video queue operations
>   */
> @@ -330,6 +338,75 @@ static const struct vb2_ops stf_video_vb2_q_ops = {
>  	.stop_streaming  = video_stop_streaming,
>  };
>  
> +static int video_scd_queue_setup(struct vb2_queue *q,
> +				 unsigned int *num_buffers,
> +				 unsigned int *num_planes,
> +				 unsigned int sizes[],
> +				 struct device *alloc_devs[])
> +{

This still needs:

        if (*nplanes)
                return sizes[0] < sizeof(struct jh7110_isp_sc_buffer) ? -EINVAL : 0;

for proper VIDIOC_CREATEBUFS support.

Otherwise this will probably fail with 'v4l2-compliance -s'.

> +	*num_planes = 1;
> +	sizes[0] = sizeof(struct jh7110_isp_sc_buffer);
> +
> +	return 0;
> +}
> +
> +static int video_scd_buf_init(struct vb2_buffer *vb)
> +{
> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> +	struct stfcamss_buffer *buffer = to_stfcamss_buffer(vbuf);
> +	dma_addr_t *paddr;
> +
> +	paddr = vb2_plane_cookie(vb, 0);
> +	buffer->addr[0] = *paddr;
> +	buffer->addr[1] = buffer->addr[0] + ISP_YHIST_BUFFER_SIZE;
> +	buffer->vaddr = vb2_plane_vaddr(vb, 0);
> +
> +	return 0;
> +}
> +
> +static int video_scd_buf_prepare(struct vb2_buffer *vb)
> +{
> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> +
> +	if (sizeof(struct jh7110_isp_sc_buffer) > vb2_plane_size(vb, 0))
> +		return -EINVAL;
> +
> +	vb2_set_plane_payload(vb, 0, sizeof(struct jh7110_isp_sc_buffer));
> +
> +	vbuf->field = V4L2_FIELD_NONE;
> +
> +	return 0;
> +}
> +
> +static int video_scd_start_streaming(struct vb2_queue *q, unsigned int count)
> +{
> +	struct stfcamss_video *video = vb2_get_drv_priv(q);
> +
> +	video->ops->start_streaming(video);
> +
> +	return 0;
> +}
> +
> +static void video_scd_stop_streaming(struct vb2_queue *q)
> +{
> +	struct stfcamss_video *video = vb2_get_drv_priv(q);
> +
> +	video->ops->stop_streaming(video);
> +
> +	video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
> +}
> +
> +static const struct vb2_ops stf_video_scd_vb2_q_ops = {
> +	.queue_setup     = video_scd_queue_setup,
> +	.wait_prepare    = vb2_ops_wait_prepare,
> +	.wait_finish     = vb2_ops_wait_finish,
> +	.buf_init        = video_scd_buf_init,
> +	.buf_prepare     = video_scd_buf_prepare,
> +	.buf_queue       = video_buf_queue,
> +	.start_streaming = video_scd_start_streaming,
> +	.stop_streaming  = video_scd_stop_streaming,
> +};
> +
>  /* -----------------------------------------------------------------------------
>   * V4L2 ioctls
>   */
> @@ -448,6 +525,37 @@ static const struct v4l2_ioctl_ops stf_vid_ioctl_ops = {
>  	.vidioc_streamoff               = vb2_ioctl_streamoff,
>  };
>  
> +static int video_scd_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
> +{
> +	struct stfcamss_video *video = video_drvdata(file);
> +	struct v4l2_meta_format *meta = &f->fmt.meta;
> +
> +	if (f->type != video->type)
> +		return -EINVAL;
> +
> +	meta->dataformat = video->active_fmt.fmt.meta.dataformat;
> +	meta->buffersize = video->active_fmt.fmt.meta.buffersize;
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_ioctl_ops stf_vid_scd_ioctl_ops = {
> +	.vidioc_querycap                = video_querycap,
> +	.vidioc_enum_fmt_meta_cap       = video_enum_fmt,
> +	.vidioc_g_fmt_meta_cap          = video_scd_g_fmt,
> +	.vidioc_s_fmt_meta_cap          = video_scd_g_fmt,
> +	.vidioc_try_fmt_meta_cap        = video_scd_g_fmt,
> +	.vidioc_reqbufs                 = vb2_ioctl_reqbufs,
> +	.vidioc_querybuf                = vb2_ioctl_querybuf,
> +	.vidioc_qbuf                    = vb2_ioctl_qbuf,
> +	.vidioc_expbuf                  = vb2_ioctl_expbuf,
> +	.vidioc_dqbuf                   = vb2_ioctl_dqbuf,
> +	.vidioc_create_bufs             = vb2_ioctl_create_bufs,
> +	.vidioc_prepare_buf             = vb2_ioctl_prepare_buf,
> +	.vidioc_streamon                = vb2_ioctl_streamon,
> +	.vidioc_streamoff               = vb2_ioctl_streamoff,
> +};
> +
>  /* -----------------------------------------------------------------------------
>   * V4L2 file operations
>   */
> @@ -473,6 +581,9 @@ static int stf_link_validate(struct media_link *link)
>  	struct stfcamss_video *video = video_get_drvdata(vdev);
>  	int ret;
>  
> +	if (video->type == V4L2_BUF_TYPE_META_CAPTURE)
> +		return 0;
> +
>  	ret = stf_video_check_format(video);
>  
>  	return ret;
> @@ -506,7 +617,11 @@ int stf_video_register(struct stfcamss_video *video,
>  	q = &video->vb2_q;
>  	q->drv_priv = video;
>  	q->mem_ops = &vb2_dma_contig_memops;
> -	q->ops = &stf_video_vb2_q_ops;
> +
> +	if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
> +		q->ops = &stf_video_vb2_q_ops;
> +	else
> +		q->ops = &stf_video_scd_vb2_q_ops;
>  	q->type = video->type;
>  	q->io_modes = VB2_DMABUF | VB2_MMAP;
>  	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
> @@ -529,16 +644,28 @@ int stf_video_register(struct stfcamss_video *video,
>  		goto err_mutex_destroy;
>  	}
>  
> -	ret = stf_video_init_format(video);
> -	if (ret < 0) {
> -		dev_err(video->stfcamss->dev,
> -			"Failed to init format: %d\n", ret);
> -		goto err_media_cleanup;
> +	if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
> +		ret = stf_video_init_format(video);
> +		if (ret < 0) {
> +			dev_err(video->stfcamss->dev,
> +				"Failed to init format: %d\n", ret);
> +			goto err_media_cleanup;
> +		}
> +		vdev->ioctl_ops = &stf_vid_ioctl_ops;
> +		vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE;
> +	} else {
> +		ret = stf_video_scd_init_format(video);
> +		if (ret < 0) {
> +			dev_err(video->stfcamss->dev,
> +				"Failed to init format: %d\n", ret);
> +			goto err_media_cleanup;
> +		}
> +		vdev->ioctl_ops = &stf_vid_scd_ioctl_ops;
> +		vdev->device_caps = V4L2_CAP_META_CAPTURE;
>  	}
>  
>  	vdev->fops = &stf_vid_fops;
> -	vdev->ioctl_ops = &stf_vid_ioctl_ops;
> -	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
> +	vdev->device_caps |= V4L2_CAP_STREAMING;
>  	vdev->entity.ops = &stf_media_ops;
>  	vdev->vfl_dir = VFL_DIR_RX;
>  	vdev->release = stf_video_release;
> diff --git a/drivers/staging/media/starfive/camss/stf-video.h b/drivers/staging/media/starfive/camss/stf-video.h
> index 59799b65cbe5..53a1cf4e59b7 100644
> --- a/drivers/staging/media/starfive/camss/stf-video.h
> +++ b/drivers/staging/media/starfive/camss/stf-video.h
> @@ -37,6 +37,7 @@ enum stf_v_line_id {
>  enum stf_capture_type {
>  	STF_CAPTURE_RAW = 0,
>  	STF_CAPTURE_YUV,
> +	STF_CAPTURE_SCD,
>  	STF_CAPTURE_NUM,
>  };
>  

Regards,

	Hans

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