Re: [PATCH v5 08/14] staging: media: starfive: Add for StarFive ISP 3A SC
From: Jacopo Mondi
Date: Wed Jul 10 2024 - 07:57:39 EST
Hi Changhuang
On Tue, Jul 09, 2024 at 01:38:18AM GMT, Changhuang Liang wrote:
> Register ISP 3A "capture_scd" video device to receive statistics
> collection data.
>
> Signed-off-by: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>
> ---
> .../staging/media/starfive/camss/stf-buffer.h | 1 +
> .../staging/media/starfive/camss/stf-camss.c | 15 ++
> .../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 | 146 +++++++++++++++++-
> .../staging/media/starfive/camss/stf-video.h | 1 +
> 7 files changed, 264 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 fecd3e67c7a1..fafa3ce2f6da 100644
> --- a/drivers/staging/media/starfive/camss/stf-camss.c
> +++ b/drivers/staging/media/starfive/camss/stf-camss.c
> @@ -8,6 +8,7 @@
> *
> * Author: Jack Zhu <jack.zhu@xxxxxxxxxxxxxxxx>
> * Author: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>
> + * Author: Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>
> *
> */
> #include <linux/module.h>
> @@ -126,6 +127,7 @@ 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 +152,18 @@ 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;
or just 'err_rm_links'
> +
> + cap_scd->video.source_subdev = &isp_dev->subdev;
> +
> return ret;
here you can return 0
>
> +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 +175,12 @@ 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);
> @@ -436,5 +450,6 @@ module_platform_driver(stfcamss_driver);
>
> MODULE_AUTHOR("Jack Zhu <jack.zhu@xxxxxxxxxxxxxxxx>");
> MODULE_AUTHOR("Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>");
> +MODULE_AUTHOR("Keith Zhao <keith.zhao@xxxxxxxxxxxxxxxx>");
> MODULE_DESCRIPTION("StarFive Camera Subsystem driver");
> MODULE_LICENSE("GPL");
> 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..3b18d09f2cc6 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;
> +}
So far used by a single caller, could be inlined
> +
> +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);
If you have a contigous memory space to read, could memcpy_fromio() help
instead of going through 64 reads ?
> +}
> +
> +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_FLAG_AWB;
> + *type_scd = TYPE_OECF;
> + } else {
> + sc->flag = JH7110_ISP_SC_FLAG_AE_AF;
> + *type_scd = TYPE_AWB;
Is this correct ? Why are you overwriting the value read from HW that
indicates AE/AF stats with AWB ones ?
> + }
> +}
> +
> 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);
Sorry if I'm un-familiar with the HW but this seems to be the
line-interrupt. Are you swapping buffers every line or it's just that
you have a single line irq for the stats ?
> + }
> + }
> }
>
> 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))
Should this be in the uAPI header as it is useful to userspace as well ?
you could:
struct jh7110_isp_sc_buffer {
__u8 y_histogram[ISP_YHIST_BUFFER_SIZE];
__u32 reserv0[33];
__u32 bright_sc[4096];
__u32 reserv1[96];
__u32 ae_hist_y[128];
__u32 reserv2[511];
__u16 flag;
};
ofc if the size is made part of the uAPI you need a more proper name
such as JH7110_ISP_YHIST_SIZE
> +
> +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..2203605ec9c7 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)
Make it void if it can't fail (see below)
> +{
> + 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 +338,78 @@ 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[])
> +{
> + if (*num_planes)
> + return sizes[0] < sizeof(struct jh7110_isp_sc_buffer) ? -EINVAL : 0;
> +
> + *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;
Interesting, I don't see many users of vb2_plane_cookie() in mainline
and I'm not sure what this gives you as you use it to program the
following registers:
stf_isp_reg_write(stfcamss, ISP_REG_SCD_CFG_0, scd_addr);
stf_isp_reg_write(stfcamss, ISP_REG_YHIST_CFG_4, yhist_addr);
> + 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;
is this necessary ?
> +
> + 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 +528,37 @@ 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 +584,9 @@ 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 +620,11 @@ 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 +647,28 @@ 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);
I don't think this can fail
> + 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);
This can't fail as noted above
> + 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,
> };
>
> --
> 2.25.1
>
>