[PATCH v5 04/14] staging: media: starfive: Add a params sink pad and a scd source pad for ISP

Changhuang Liang
2024-07-09T08:54:24Z

StarFive ISP can use params sink pad to transmit ISP parameters and use
scd source pad to capture statistics collection data.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
---
.../staging/media/starfive/camss/stf-isp.c | 77 +++++++++++++++++--
.../staging/media/starfive/camss/stf-isp.h | 2 +
2 files changed, 71 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/media/starfive/camss/stf-isp.c b/drivers/staging/media/starfive/camss/stf-isp.c
index 4e6e26736852..0ebffd09842a 100644
--- a/drivers/staging/media/starfive/camss/stf-isp.c
+++ b/drivers/staging/media/starfive/camss/stf-isp.c
@@ -21,13 +21,23 @@ static const struct stf_isp_format isp_formats_sink[] = {
{ MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
};

+static const struct stf_isp_format isp_formats_sink_params[] = {
+ { MEDIA_BUS_FMT_METADATA_FIXED },
+};
+
static const struct stf_isp_format isp_formats_source[] = {
{ MEDIA_BUS_FMT_YUYV8_1_5X8, 8 },
};

+static const struct stf_isp_format isp_formats_source_scd[] = {
+ { MEDIA_BUS_FMT_METADATA_FIXED },
+};
+
static const struct stf_isp_format_table isp_formats_st7110[] = {
{ isp_formats_sink, ARRAY_SIZE(isp_formats_sink) },
+ { isp_formats_sink_params, ARRAY_SIZE(isp_formats_sink_params) },
{ isp_formats_source, ARRAY_SIZE(isp_formats_source) },
+ { isp_formats_source_scd, ARRAY_SIZE(isp_formats_source_scd) },
};

static const struct stf_isp_format *
@@ -93,13 +103,19 @@ static void isp_try_format(struct stf_isp_dev *isp_dev,

formats = &isp_dev->formats[pad];

- fmt->width = clamp_t(u32, fmt->width, STFCAMSS_FRAME_MIN_WIDTH,
- STFCAMSS_FRAME_MAX_WIDTH);
- fmt->height = clamp_t(u32, fmt->height, STFCAMSS_FRAME_MIN_HEIGHT,
- STFCAMSS_FRAME_MAX_HEIGHT);
- fmt->height &= ~0x1;
+ if (pad != STF_ISP_PAD_SRC_SCD && pad != STF_ISP_PAD_SINK_PARAMS) {
+ fmt->width = clamp_t(u32, fmt->width, STFCAMSS_FRAME_MIN_WIDTH,
+ STFCAMSS_FRAME_MAX_WIDTH);
+ fmt->height = clamp_t(u32, fmt->height, STFCAMSS_FRAME_MIN_HEIGHT,
+ STFCAMSS_FRAME_MAX_HEIGHT);
+ fmt->height &= ~0x1;
+ fmt->colorspace = V4L2_COLORSPACE_SRGB;
+ } else {
+ fmt->width = 1;
+ fmt->height = 1;
+ }
+
fmt->field = V4L2_FIELD_NONE;
- fmt->colorspace = V4L2_COLORSPACE_SRGB;
fmt->flags = 0;

if (!stf_g_fmt_by_mcode(formats, fmt->code))
@@ -119,7 +135,7 @@ static int isp_enum_mbus_code(struct v4l2_subdev *sd,

formats = &isp_dev->formats[code->pad];
code->code = formats->fmts[code->index].code;
- } else {
+ } else if (code->pad == STF_ISP_PAD_SRC) {
struct v4l2_mbus_framefmt *sink_fmt;

if (code->index >= ARRAY_SIZE(isp_formats_source))
@@ -131,6 +147,10 @@ static int isp_enum_mbus_code(struct v4l2_subdev *sd,
code->code = sink_fmt->code;
if (!code->code)
return -EINVAL;
+ } else {
+ if (code->index > 0)
+ return -EINVAL;
+ code->code = MEDIA_BUS_FMT_METADATA_FIXED;
}
code->flags = 0;

@@ -151,6 +171,9 @@ static int isp_set_format(struct v4l2_subdev *sd,
isp_try_format(isp_dev, state, fmt->pad, &fmt->format);
*format = fmt->format;

+ if (fmt->pad == STF_ISP_PAD_SRC_SCD || fmt->pad == STF_ISP_PAD_SINK_PARAMS)
+ return 0;
+
isp_dev->current_fmt = stf_g_fmt_by_mcode(&isp_dev->formats[fmt->pad],
fmt->format.code);

@@ -202,6 +225,9 @@ static int isp_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_format fmt = { 0 };
struct v4l2_rect *rect;

+ if (sel->pad == STF_ISP_PAD_SRC_SCD || sel->pad == STF_ISP_PAD_SINK_PARAMS)
+ return -EINVAL;
+
switch (sel->target) {
case V4L2_SEL_TGT_CROP_BOUNDS:
if (sel->pad == STF_ISP_PAD_SINK) {
@@ -239,6 +265,9 @@ static int isp_set_selection(struct v4l2_subdev *sd,
struct stf_isp_dev *isp_dev = v4l2_get_subdevdata(sd);
struct v4l2_rect *rect;

+ if (sel->pad == STF_ISP_PAD_SRC_SCD || sel->pad == STF_ISP_PAD_SINK_PARAMS)
+ return -EINVAL;
+
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;

@@ -296,8 +325,38 @@ static int isp_init_formats(struct v4l2_subdev *sd,
.height = 1080
}
};
+ struct v4l2_subdev_format format_params = {
+ .pad = STF_ISP_PAD_SINK_PARAMS,
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ .format = {
+ .code = MEDIA_BUS_FMT_METADATA_FIXED,
+ .width = 1,
+ .height = 1
+ }
+ };
+ struct v4l2_subdev_format format_scd = {
+ .pad = STF_ISP_PAD_SRC_SCD,
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
+ .format = {
+ .code = MEDIA_BUS_FMT_METADATA_FIXED,
+ .width = 1,
+ .height = 1
+ }
+ };
+ int ret;
+
+ /* Init for STF_ISP_PAD_SINK and STF_ISP_PAD_SRC pad */
+ ret = isp_set_format(sd, sd_state, &format);
+ if (ret < 0)
+ return ret;
+
+ /* Init for STF_ISP_PAD_SINK_PARAMS pad */
+ ret = isp_set_format(sd, sd_state, &format_params);
+ if (ret < 0)
+ return ret;

- return isp_set_format(sd, sd_state, &format);
+ /* Init for STF_ISP_PAD_SRC_SCD pad */
+ return isp_set_format(sd, sd_state, &format_scd);
}

static const struct v4l2_subdev_video_ops isp_video_ops = {
@@ -338,7 +397,9 @@ int stf_isp_register(struct stf_isp_dev *isp_dev, struct v4l2_device *v4l2_dev)
v4l2_set_subdevdata(sd, isp_dev);

pads[STF_ISP_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[STF_ISP_PAD_SINK_PARAMS].flags = MEDIA_PAD_FL_SINK;
pads[STF_ISP_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE;
+ pads[STF_ISP_PAD_SRC_SCD].flags = MEDIA_PAD_FL_SOURCE;

sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
sd->entity.ops = &isp_media_ops;
diff --git a/drivers/staging/media/starfive/camss/stf-isp.h b/drivers/staging/media/starfive/camss/stf-isp.h
index 955cbb048363..bc7e7b0736fa 100644
--- a/drivers/staging/media/starfive/camss/stf-isp.h
+++ b/drivers/staging/media/starfive/camss/stf-isp.h
@@ -392,7 +392,9 @@
/* pad id for media framework */
enum stf_isp_pad_id {
STF_ISP_PAD_SINK = 0,
+ STF_ISP_PAD_SINK_PARAMS,
STF_ISP_PAD_SRC,
+ STF_ISP_PAD_SRC_SCD,
STF_ISP_PAD_MAX
};

--
2.25.1