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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2016-06-20 12:07:08 +0300
committerLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2017-03-05 23:54:53 +0200
commit2613fdf09cf6b769d757aca8dd0d3fc4c6119ed5 (patch)
tree417f63dec075ae7610a3663ba92b204a60d1ca8e
parentd24ef06f24ee3a0f0a2fa62f0b601c3b6ceeee2f (diff)
v4l: vsp1: wpf: Implement rotation supportvsp1-rotation-v2.2-20170306
Some WPF instances, on Gen3 devices, can perform 90° rotation when writing frames to memory. Implement support for this using the V4L2_CID_ROTATE control. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- Changes since v3: - Store controls in distinct fields instead of array.
-rw-r--r--drivers/media/platform/vsp1/vsp1_rpf.c2
-rw-r--r--drivers/media/platform/vsp1/vsp1_rwpf.c5
-rw-r--r--drivers/media/platform/vsp1/vsp1_rwpf.h7
-rw-r--r--drivers/media/platform/vsp1/vsp1_video.c12
-rw-r--r--drivers/media/platform/vsp1/vsp1_wpf.c205
5 files changed, 177 insertions, 54 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c
index f5a9a4c8c74d..8feddd59cf8d 100644
--- a/drivers/media/platform/vsp1/vsp1_rpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rpf.c
@@ -106,7 +106,7 @@ static void rpf_configure(struct vsp1_entity *entity,
* of the pipeline.
*/
output = vsp1_entity_get_pad_format(wpf, wpf->config,
- RWPF_PAD_SOURCE);
+ RWPF_PAD_SINK);
crop.width = pipe->partition.width * input_width
/ output->width;
diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.c b/drivers/media/platform/vsp1/vsp1_rwpf.c
index 7d52c88a583e..cfd8f1904fa6 100644
--- a/drivers/media/platform/vsp1/vsp1_rwpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rwpf.c
@@ -121,6 +121,11 @@ static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev,
RWPF_PAD_SOURCE);
*format = fmt->format;
+ if (rwpf->flip.rotate) {
+ format->width = fmt->format.height;
+ format->height = fmt->format.width;
+ }
+
done:
mutex_unlock(&rwpf->entity.lock);
return ret;
diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h
index 1c98aff3da5d..58215a7ab631 100644
--- a/drivers/media/platform/vsp1/vsp1_rwpf.h
+++ b/drivers/media/platform/vsp1/vsp1_rwpf.h
@@ -56,9 +56,14 @@ struct vsp1_rwpf {
struct {
spinlock_t lock;
- struct v4l2_ctrl *ctrls[2];
+ struct {
+ struct v4l2_ctrl *vflip;
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *rotate;
+ } ctrls;
unsigned int pending;
unsigned int active;
+ bool rotate;
} flip;
struct vsp1_rwpf_memory mem;
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index 5239e08fabc3..795a3ca9ca03 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -187,9 +187,13 @@ static void vsp1_video_pipeline_setup_partitions(struct vsp1_pipeline *pipe)
struct vsp1_entity *entity;
unsigned int div_size;
+ /*
+ * Partitions are computed on the size before rotation, use the format
+ * at the WPF sink.
+ */
format = vsp1_entity_get_pad_format(&pipe->output->entity,
pipe->output->entity.config,
- RWPF_PAD_SOURCE);
+ RWPF_PAD_SINK);
div_size = format->width;
/* Gen2 hardware doesn't require image partitioning. */
@@ -229,9 +233,13 @@ static struct v4l2_rect vsp1_video_partition(struct vsp1_pipeline *pipe,
struct v4l2_rect partition;
unsigned int modulus;
+ /*
+ * Partitions are computed on the size before rotation, use the format
+ * at the WPF sink.
+ */
format = vsp1_entity_get_pad_format(&pipe->output->entity,
pipe->output->entity.config,
- RWPF_PAD_SOURCE);
+ RWPF_PAD_SINK);
/* A single partition simply processes the output size in full. */
if (pipe->partitions <= 1) {
diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c
index 25a2ed6e2e18..32df109b119f 100644
--- a/drivers/media/platform/vsp1/vsp1_wpf.c
+++ b/drivers/media/platform/vsp1/vsp1_wpf.c
@@ -43,32 +43,90 @@ static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf,
enum wpf_flip_ctrl {
WPF_CTRL_VFLIP = 0,
WPF_CTRL_HFLIP = 1,
- WPF_CTRL_MAX,
};
+static int vsp1_wpf_set_rotation(struct vsp1_rwpf *wpf, unsigned int rotation)
+{
+ struct vsp1_video *video = wpf->video;
+ struct v4l2_mbus_framefmt *sink_format;
+ struct v4l2_mbus_framefmt *source_format;
+ bool rotate;
+ int ret = 0;
+
+ /*
+ * Only consider the 0°/180° from/to 90°/270° modifications, the rest
+ * is taken care of by the flipping configuration.
+ */
+ rotate = rotation == 90 || rotation == 270;
+ if (rotate == wpf->flip.rotate)
+ return 0;
+
+ /* Changing rotation isn't allowed when buffers are allocated. */
+ mutex_lock(&video->lock);
+
+ if (vb2_is_busy(&video->queue)) {
+ ret = -EBUSY;
+ goto done;
+ }
+
+ sink_format = vsp1_entity_get_pad_format(&wpf->entity,
+ wpf->entity.config,
+ RWPF_PAD_SINK);
+ source_format = vsp1_entity_get_pad_format(&wpf->entity,
+ wpf->entity.config,
+ RWPF_PAD_SOURCE);
+
+ mutex_lock(&wpf->entity.lock);
+
+ if (rotate) {
+ source_format->width = sink_format->height;
+ source_format->height = sink_format->width;
+ } else {
+ source_format->width = sink_format->width;
+ source_format->height = sink_format->height;
+ }
+
+ wpf->flip.rotate = rotate;
+
+ mutex_unlock(&wpf->entity.lock);
+
+done:
+ mutex_unlock(&video->lock);
+ return ret;
+}
+
static int vsp1_wpf_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vsp1_rwpf *wpf =
container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
- unsigned int i;
+ unsigned int rotation;
u32 flip = 0;
+ int ret;
- switch (ctrl->id) {
- case V4L2_CID_HFLIP:
- case V4L2_CID_VFLIP:
- for (i = 0; i < WPF_CTRL_MAX; ++i) {
- if (wpf->flip.ctrls[i])
- flip |= wpf->flip.ctrls[i]->val ? BIT(i) : 0;
- }
+ /* Update the rotation. */
+ rotation = wpf->flip.ctrls.rotate ? wpf->flip.ctrls.rotate->val : 0;
+ ret = vsp1_wpf_set_rotation(wpf, rotation);
+ if (ret < 0)
+ return ret;
- spin_lock_irq(&wpf->flip.lock);
- wpf->flip.pending = flip;
- spin_unlock_irq(&wpf->flip.lock);
- break;
+ /*
+ * Compute the flip value resulting from all three controls, with
+ * rotation by 180° flipping the image in both directions. Store the
+ * result in the pending flip field for the next frame that will be
+ * processed.
+ */
+ if (wpf->flip.ctrls.vflip->val)
+ flip |= BIT(WPF_CTRL_VFLIP);
- default:
- return -EINVAL;
- }
+ if (wpf->flip.ctrls.hflip && wpf->flip.ctrls.hflip->val)
+ flip |= BIT(WPF_CTRL_HFLIP);
+
+ if (rotation == 180 || rotation == 270)
+ flip ^= BIT(WPF_CTRL_VFLIP) | BIT(WPF_CTRL_HFLIP);
+
+ spin_lock_irq(&wpf->flip.lock);
+ wpf->flip.pending = flip;
+ spin_unlock_irq(&wpf->flip.lock);
return 0;
}
@@ -89,10 +147,10 @@ static int wpf_init_controls(struct vsp1_rwpf *wpf)
num_flip_ctrls = 0;
} else if (vsp1->info->features & VSP1_HAS_WPF_HFLIP) {
/*
- * When horizontal flip is supported the WPF implements two
- * controls (horizontal flip and vertical flip).
+ * When horizontal flip is supported the WPF implements three
+ * controls (horizontal flip, vertical flip and rotation).
*/
- num_flip_ctrls = 2;
+ num_flip_ctrls = 3;
} else if (vsp1->info->features & VSP1_HAS_WPF_VFLIP) {
/*
* When only vertical flip is supported the WPF implements a
@@ -107,17 +165,19 @@ static int wpf_init_controls(struct vsp1_rwpf *wpf)
vsp1_rwpf_init_ctrls(wpf, num_flip_ctrls);
if (num_flip_ctrls >= 1) {
- wpf->flip.ctrls[WPF_CTRL_VFLIP] =
+ wpf->flip.ctrls.vflip =
v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
}
- if (num_flip_ctrls == 2) {
- wpf->flip.ctrls[WPF_CTRL_HFLIP] =
+ if (num_flip_ctrls == 3) {
+ wpf->flip.ctrls.hflip =
v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
-
- v4l2_ctrl_cluster(2, wpf->flip.ctrls);
+ wpf->flip.ctrls.rotate =
+ v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
+ V4L2_CID_ROTATE, 0, 270, 90, 0);
+ v4l2_ctrl_cluster(3, &wpf->flip.ctrls.vflip);
}
if (wpf->ctrls.error) {
@@ -222,8 +282,8 @@ static void wpf_configure(struct vsp1_entity *entity,
const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
struct vsp1_rwpf_memory mem = wpf->mem;
unsigned int flip = wpf->flip.active;
- unsigned int width = source_format->width;
- unsigned int height = source_format->height;
+ unsigned int width = sink_format->width;
+ unsigned int height = sink_format->height;
unsigned int offset;
/*
@@ -246,45 +306,78 @@ static void wpf_configure(struct vsp1_entity *entity,
/*
* Update the memory offsets based on flipping configuration.
* The destination addresses point to the locations where the
- * VSP starts writing to memory, which can be different corners
- * of the image depending on vertical flipping.
+ * VSP starts writing to memory, which can be any corner of the
+ * image depending on the combination of flipping and rotation.
*/
- if (pipe->partitions > 1) {
- const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
- /*
- * Horizontal flipping is handled through a line buffer
- * and doesn't modify the start address, but still needs
- * to be handled when image partitioning is in effect to
- * order the partitions correctly.
- */
- if (flip & BIT(WPF_CTRL_HFLIP))
- offset = format->width - pipe->partition.left
- - pipe->partition.width;
+ /*
+ * First take the partition left coordinate into account.
+ * Compute the offset to order the partitions correctly on the
+ * output based on whether flipping is enabled. Consider
+ * horizontal flipping when rotation is disabled but vertical
+ * flipping when rotation is enabled, as rotating the image
+ * switches the horizontal and vertical directions. The offset
+ * is applied horizontally or vertically accordingly.
+ */
+ if (flip & BIT(WPF_CTRL_HFLIP) && !wpf->flip.rotate)
+ offset = format->width - pipe->partition.left
+ - pipe->partition.width;
+ else if (flip & BIT(WPF_CTRL_VFLIP) && wpf->flip.rotate)
+ offset = format->height - pipe->partition.left
+ - pipe->partition.width;
+ else
+ offset = pipe->partition.left;
+
+ for (i = 0; i < format->num_planes; ++i) {
+ unsigned int hsub = i > 0 ? fmtinfo->hsub : 1;
+ unsigned int vsub = i > 0 ? fmtinfo->vsub : 1;
+
+ if (wpf->flip.rotate)
+ mem.addr[i] += offset / vsub
+ * format->plane_fmt[i].bytesperline;
else
- offset = pipe->partition.left;
-
- mem.addr[0] += offset * fmtinfo->bpp[0] / 8;
- if (format->num_planes > 1) {
- mem.addr[1] += offset / fmtinfo->hsub
- * fmtinfo->bpp[1] / 8;
- mem.addr[2] += offset / fmtinfo->hsub
- * fmtinfo->bpp[2] / 8;
- }
+ mem.addr[i] += offset / hsub
+ * fmtinfo->bpp[i] / 8;
}
if (flip & BIT(WPF_CTRL_VFLIP)) {
- mem.addr[0] += (format->height - 1)
+ /*
+ * When rotating the output (after rotation) image
+ * height is equal to the partition width (before
+ * rotation). Otherwise it is equal to the output
+ * image height.
+ */
+ if (wpf->flip.rotate)
+ height = pipe->partition.width;
+ else
+ height = format->height;
+
+ mem.addr[0] += (height - 1)
* format->plane_fmt[0].bytesperline;
if (format->num_planes > 1) {
- offset = (format->height / wpf->fmtinfo->vsub - 1)
+ offset = (height / fmtinfo->vsub - 1)
* format->plane_fmt[1].bytesperline;
mem.addr[1] += offset;
mem.addr[2] += offset;
}
}
+ if (wpf->flip.rotate && !(flip & BIT(WPF_CTRL_HFLIP))) {
+ unsigned int hoffset = max(0, (int)format->width - 16);
+
+ /*
+ * Compute the output coordinate. The partition
+ * horizontal (left) offset becomes a vertical offset.
+ */
+ for (i = 0; i < format->num_planes; ++i) {
+ unsigned int hsub = i > 0 ? fmtinfo->hsub : 1;
+
+ mem.addr[i] += hoffset / hsub
+ * fmtinfo->bpp[i] / 8;
+ }
+ }
+
/*
* On Gen3 hardware the SPUVS bit has no effect on 3-planar
* formats. Swap the U and V planes manually in that case.
@@ -306,6 +399,9 @@ static void wpf_configure(struct vsp1_entity *entity,
outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;
+ if (wpf->flip.rotate)
+ outfmt |= VI6_WPF_OUTFMT_ROT;
+
if (fmtinfo->alpha)
outfmt |= VI6_WPF_OUTFMT_PXA;
if (fmtinfo->swap_yc)
@@ -367,9 +463,18 @@ static void wpf_configure(struct vsp1_entity *entity,
VI6_WFP_IRQ_ENB_DFEE);
}
+static unsigned int wpf_max_width(struct vsp1_entity *entity,
+ struct vsp1_pipeline *pipe)
+{
+ struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
+
+ return wpf->flip.rotate ? 256 : wpf->max_width;
+}
+
static const struct vsp1_entity_operations wpf_entity_ops = {
.destroy = vsp1_wpf_destroy,
.configure = wpf_configure,
+ .max_width = wpf_max_width,
};
/* -----------------------------------------------------------------------------

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