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Subject[PATCH v3 19/23] camss: vfe: Add interface for cropping
Date
Extend selection ioctls to handle cropping configuration.

Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
---
drivers/media/platform/qcom/camss-8x16/camss-vfe.c | 191 ++++++++++++++++-----
drivers/media/platform/qcom/camss-8x16/camss-vfe.h | 1 +
2 files changed, 150 insertions(+), 42 deletions(-)

diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
index f994b35..17617c0 100644
--- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
@@ -1961,6 +1961,26 @@ __vfe_get_compose(struct vfe_line *line,
}

/*
+ * __vfe_get_crop - Get pointer to crop selection structure
+ * @line: VFE line
+ * @cfg: V4L2 subdev pad configuration
+ * @which: TRY or ACTIVE format
+ *
+ * Return pointer to TRY or ACTIVE crop rectangle structure
+ */
+static struct v4l2_rect *
+__vfe_get_crop(struct vfe_line *line,
+ struct v4l2_subdev_pad_config *cfg,
+ enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_crop(&line->subdev, cfg,
+ MSM_VFE_PAD_SRC);
+
+ return &line->crop;
+}
+
+/*
* vfe_try_format - Handle try format by pad subdev method
* @line: VFE line
* @cfg: V4L2 subdev pad configuration
@@ -2008,7 +2028,7 @@ static void vfe_try_format(struct vfe_line *line,
if (line->id == VFE_LINE_PIX) {
struct v4l2_rect *rect;

- rect = __vfe_get_compose(line, cfg, which);
+ rect = __vfe_get_crop(line, cfg, which);

fmt->width = rect->width;
fmt->height = rect->height;
@@ -2093,6 +2113,49 @@ static void vfe_try_compose(struct vfe_line *line,
}

/*
+ * vfe_try_crop - Handle try crop selection by pad subdev method
+ * @line: VFE line
+ * @cfg: V4L2 subdev pad configuration
+ * @rect: pointer to v4l2 rect structure
+ * @which: wanted subdev format
+ */
+static void vfe_try_crop(struct vfe_line *line,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_rect *rect,
+ enum v4l2_subdev_format_whence which)
+{
+ struct v4l2_rect *compose;
+
+ compose = __vfe_get_compose(line, cfg, which);
+
+ if (rect->width > compose->width)
+ rect->width = compose->width;
+
+ if (rect->width + rect->left > compose->width)
+ rect->left = compose->width - rect->width;
+
+ if (rect->height > compose->height)
+ rect->height = compose->height;
+
+ if (rect->height + rect->top > compose->height)
+ rect->top = compose->height - rect->height;
+
+ /* wm in line based mode writes multiple of 16 horizontally */
+ rect->left += (rect->width & 0xf) >> 1;
+ rect->width &= ~0xf;
+
+ if (rect->width < 16) {
+ rect->left = 0;
+ rect->width = 16;
+ }
+
+ if (rect->height < 4) {
+ rect->top = 0;
+ rect->height = 4;
+ }
+}
+
+/*
* vfe_enum_mbus_code - Handle pixel format enumeration
* @sd: VFE V4L2 subdevice
* @cfg: V4L2 subdev pad configuration
@@ -2256,34 +2319,58 @@ static int vfe_get_selection(struct v4l2_subdev *sd,
{
struct vfe_line *line = v4l2_get_subdevdata(sd);
struct v4l2_subdev_format fmt = { 0 };
- struct v4l2_rect *compose;
+ struct v4l2_rect *rect;
int ret;

- if (line->id != VFE_LINE_PIX || sel->pad != MSM_VFE_PAD_SINK)
+ if (line->id != VFE_LINE_PIX)
return -EINVAL;

- switch (sel->target) {
- case V4L2_SEL_TGT_COMPOSE_BOUNDS:
- fmt.pad = sel->pad;
- fmt.which = sel->which;
- ret = vfe_get_format(sd, cfg, &fmt);
- if (ret < 0)
- return ret;
- sel->r.left = 0;
- sel->r.top = 0;
- sel->r.width = fmt.format.width;
- sel->r.height = fmt.format.height;
- break;
- case V4L2_SEL_TGT_COMPOSE:
- compose = __vfe_get_compose(line, cfg, sel->which);
- if (compose == NULL)
+ if (sel->pad == MSM_VFE_PAD_SINK)
+ switch (sel->target) {
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ fmt.pad = sel->pad;
+ fmt.which = sel->which;
+ ret = vfe_get_format(sd, cfg, &fmt);
+ if (ret < 0)
+ return ret;
+
+ sel->r.left = 0;
+ sel->r.top = 0;
+ sel->r.width = fmt.format.width;
+ sel->r.height = fmt.format.height;
+ break;
+ case V4L2_SEL_TGT_COMPOSE:
+ rect = __vfe_get_compose(line, cfg, sel->which);
+ if (rect == NULL)
+ return -EINVAL;
+
+ sel->r = *rect;
+ break;
+ default:
return -EINVAL;
+ }
+ else if (sel->pad == MSM_VFE_PAD_SRC)
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ rect = __vfe_get_compose(line, cfg, sel->which);
+ if (rect == NULL)
+ return -EINVAL;

- sel->r = *compose;
- break;
- default:
- return -EINVAL;
- }
+ sel->r.left = rect->left;
+ sel->r.top = rect->top;
+ sel->r.width = rect->width;
+ sel->r.height = rect->height;
+ break;
+ case V4L2_SEL_TGT_CROP:
+ rect = __vfe_get_crop(line, cfg, sel->which);
+ if (rect == NULL)
+ return -EINVAL;
+
+ sel->r = *rect;
+ break;
+ default:
+ return -EINVAL;
+ }

return 0;
}
@@ -2301,33 +2388,53 @@ int vfe_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_selection *sel)
{
struct vfe_line *line = v4l2_get_subdevdata(sd);
- struct v4l2_rect *compose;
- struct v4l2_subdev_format fmt = { 0 };
+ struct v4l2_rect *rect;
int ret;

- if (line->id != VFE_LINE_PIX || sel->pad != MSM_VFE_PAD_SINK)
+ if (line->id != VFE_LINE_PIX)
return -EINVAL;

- if (sel->target != V4L2_SEL_TGT_COMPOSE)
- return -EINVAL;
+ if (sel->target == V4L2_SEL_TGT_COMPOSE &&
+ sel->pad == MSM_VFE_PAD_SINK) {
+ struct v4l2_subdev_selection crop = { 0 };

- compose = __vfe_get_compose(line, cfg, sel->which);
- if (compose == NULL)
- return -EINVAL;
+ rect = __vfe_get_compose(line, cfg, sel->which);
+ if (rect == NULL)
+ return -EINVAL;
+
+ vfe_try_compose(line, cfg, &sel->r, sel->which);
+ *rect = sel->r;
+
+ /* Reset source crop selection */
+ crop.which = sel->which;
+ crop.pad = MSM_VFE_PAD_SRC;
+ crop.target = V4L2_SEL_TGT_CROP;
+ crop.r = *rect;
+ ret = vfe_set_selection(sd, cfg, &crop);
+ } else if (sel->target == V4L2_SEL_TGT_CROP &&
+ sel->pad == MSM_VFE_PAD_SRC) {
+ struct v4l2_subdev_format fmt = { 0 };
+
+ rect = __vfe_get_crop(line, cfg, sel->which);
+ if (rect == NULL)
+ return -EINVAL;

- vfe_try_compose(line, cfg, &sel->r, sel->which);
- *compose = sel->r;
+ vfe_try_crop(line, cfg, &sel->r, sel->which);
+ *rect = sel->r;

- /* Reset source pad format width and height */
- fmt.which = sel->which;
- fmt.pad = MSM_VFE_PAD_SRC;
- ret = vfe_get_format(sd, cfg, &fmt);
- if (ret < 0)
- return ret;
+ /* Reset source pad format width and height */
+ fmt.which = sel->which;
+ fmt.pad = MSM_VFE_PAD_SRC;
+ ret = vfe_get_format(sd, cfg, &fmt);
+ if (ret < 0)
+ return ret;

- fmt.format.width = compose->width;
- fmt.format.height = compose->height;
- ret = vfe_set_format(sd, cfg, &fmt);
+ fmt.format.width = rect->width;
+ fmt.format.height = rect->height;
+ ret = vfe_set_format(sd, cfg, &fmt);
+ } else {
+ ret = -EINVAL;
+ }

return ret;
}
diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.h b/drivers/media/platform/qcom/camss-8x16/camss-vfe.h
index 6518c7a..3651ece 100644
--- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.h
+++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.h
@@ -81,6 +81,7 @@ struct vfe_line {
struct media_pad pads[MSM_VFE_PADS_NUM];
struct v4l2_mbus_framefmt fmt[MSM_VFE_PADS_NUM];
struct v4l2_rect compose;
+ struct v4l2_rect crop;
struct camss_video video_out;
struct vfe_output output;
};
--
2.7.4
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