Make the Z-order of planes configurable by assigning RPFs to BRU inputs
dynamically based on the Z-order position.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_drm.c | 180 +++++++++++++++++++-------------
drivers/media/platform/vsp1/vsp1_drm.h | 12 ++-
drivers/media/platform/vsp1/vsp1_pipe.c | 1 +
include/media/vsp1.h | 18 +++-
4 files changed, 130 insertions(+), 81 deletions(-)
diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c
index 7cde2d970dba..d85cb0e258c9 100644
--- a/drivers/media/platform/vsp1/vsp1_drm.c
+++ b/drivers/media/platform/vsp1/vsp1_drm.c
@@ -93,6 +93,7 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int width,
media_entity_pipeline_stop(&pipe->output->entity.subdev.entity);
for (i = 0; i < bru->entity.source_pad; ++i) {
+ vsp1->drm->inputs[i].enabled = false;
bru->inputs[i].rpf = NULL;
pipe->inputs[i] = NULL;
}
@@ -217,14 +218,9 @@ void vsp1_du_atomic_begin(struct device *dev)
{
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
struct vsp1_pipeline *pipe = &vsp1->drm->pipe;
- unsigned long flags;
-
- spin_lock_irqsave(&pipe->irqlock, flags);
vsp1->drm->num_inputs = pipe->num_inputs;
- spin_unlock_irqrestore(&pipe->irqlock, flags);
-
/* Prepare the display list. */
pipe->dl = vsp1_dl_list_get(pipe->output->dlm);
}
@@ -239,10 +235,12 @@ EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin);
* @mem: DMA addresses of the memory buffers (one per plane)
* @src: the source crop rectangle for the RPF
* @dst: the destination compose rectangle for the BRU input
+ * @zpos: the Z-order position of the input
*
* Configure the VSP to perform composition of the image referenced by @mem
* through RPF @rpf_index, using the @src crop rectangle and the @dst
- * composition rectangle. The Z-order is fixed with RPF 0 at the bottom.
+ * composition rectangle. The Z-order is configurable with higher @zpos values
+ * displayed on top.
*
* Image format as stored in memory is expressed as a V4L2 @pixelformat value.
* As a special case, setting the pixel format to 0 will disable the RPF. The
@@ -260,24 +258,16 @@ EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin);
*
* This function isn't reentrant, the caller needs to serialize calls.
*
- * TODO: Implement Z-order control by decoupling the RPF index from the BRU
- * input index.
- *
* Return 0 on success or a negative error code on failure.
*/
-int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
- u32 pixelformat, unsigned int pitch,
- dma_addr_t mem[2], const struct v4l2_rect *src,
- const struct v4l2_rect *dst)
+int vsp1_du_atomic_update_ext(struct device *dev, unsigned int rpf_index,
+ u32 pixelformat, unsigned int pitch,
+ dma_addr_t mem[2], const struct v4l2_rect *src,
+ const struct v4l2_rect *dst, unsigned int zpos)
{
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
- struct vsp1_pipeline *pipe = &vsp1->drm->pipe;
const struct vsp1_format_info *fmtinfo;
- struct v4l2_subdev_selection sel;
- struct v4l2_subdev_format format;
struct vsp1_rwpf *rpf;
- unsigned long flags;
- int ret;
if (rpf_index >= vsp1->info->rpf_count)
return -EINVAL;
@@ -288,31 +278,20 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
dev_dbg(vsp1->dev, "%s: RPF%u: disable requested\n", __func__,
rpf_index);
- spin_lock_irqsave(&pipe->irqlock, flags);
-
- if (pipe->inputs[rpf_index]) {
- /* Remove the RPF from the pipeline if it was previously
- * enabled.
- */
- vsp1->bru->inputs[rpf_index].rpf = NULL;
- pipe->inputs[rpf_index] = NULL;
-
- pipe->num_inputs--;
- }
-
- spin_unlock_irqrestore(&pipe->irqlock, flags);
-
+ vsp1->drm->inputs[rpf_index].enabled = false;
return 0;
}
dev_dbg(vsp1->dev,
- "%s: RPF%u: (%u,%u)/%ux%u -> (%u,%u)/%ux%u (%08x), pitch %u dma { %pad, %pad }\n",
+ "%s: RPF%u: (%u,%u)/%ux%u -> (%u,%u)/%ux%u (%08x), pitch %u dma { %pad, %pad } zpos %u\n",
__func__, rpf_index,
src->left, src->top, src->width, src->height,
dst->left, dst->top, dst->width, dst->height,
- pixelformat, pitch, &mem[0], &mem[1]);
+ pixelformat, pitch, &mem[0], &mem[1], zpos);
- /* Set the stride at the RPF input. */
+ /* Store the format, stride, memory buffer address, crop and compose
+ * rectangles and Z-order position and for the input.
+ */
fmtinfo = vsp1_get_format_info(pixelformat);
if (!fmtinfo) {
dev_dbg(vsp1->dev, "Unsupport pixel format %08x for RPF\n",
@@ -325,15 +304,38 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
rpf->format.plane_fmt[0].bytesperline = pitch;
rpf->format.plane_fmt[1].bytesperline = pitch;
+ rpf->mem.addr[0] = mem[0];
+ rpf->mem.addr[1] = mem[1];
+ rpf->mem.addr[2] = 0;
+
+ vsp1->drm->inputs[rpf_index].crop = *src;
+ vsp1->drm->inputs[rpf_index].compose = *dst;
+ vsp1->drm->inputs[rpf_index].zpos = zpos;
+ vsp1->drm->inputs[rpf_index].enabled = true;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vsp1_du_atomic_update_ext);
+
+static int vsp1_du_setup_rpf_pipe(struct vsp1_device *vsp1,
+ struct vsp1_rwpf *rpf, unsigned int bru_input)
+{
+ struct v4l2_subdev_selection sel;
+ struct v4l2_subdev_format format;
+ const struct v4l2_rect *crop;
+ int ret;
+
/* Configure the format on the RPF sink pad and propagate it up to the
* BRU sink pad.
*/
+ crop = &vsp1->drm->inputs[rpf->entity.index].crop;
+
memset(&format, 0, sizeof(format));
format.which = V4L2_SUBDEV_FORMAT_ACTIVE;
format.pad = RWPF_PAD_SINK;
- format.format.width = src->width + src->left;
- format.format.height = src->height + src->top;
- format.format.code = fmtinfo->mbus;
+ format.format.width = crop->width + crop->left;
+ format.format.height = crop->height + crop->top;
+ format.format.code = rpf->fmtinfo->mbus;
format.format.field = V4L2_FIELD_NONE;
ret = v4l2_subdev_call(&rpf->entity.subdev, pad, set_fmt, NULL,
@@ -350,7 +352,7 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
sel.which = V4L2_SUBDEV_FORMAT_ACTIVE;
sel.pad = RWPF_PAD_SINK;
sel.target = V4L2_SEL_TGT_CROP;
- sel.r = *src;
+ sel.r = *crop;
ret = v4l2_subdev_call(&rpf->entity.subdev, pad, set_selection, NULL,
&sel);
@@ -385,7 +387,7 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
return ret;
/* BRU sink, propagate the format from the RPF source. */
- format.pad = rpf->entity.index;
+ format.pad = bru_input;
ret = v4l2_subdev_call(&vsp1->bru->entity.subdev, pad, set_fmt, NULL,
&format);
@@ -396,9 +398,9 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
__func__, format.format.width, format.format.height,
format.format.code, format.pad);
- sel.pad = rpf->entity.index;
+ sel.pad = bru_input;
sel.target = V4L2_SEL_TGT_COMPOSE;
- sel.r = *dst;
+ sel.r = vsp1->drm->inputs[rpf->entity.index].compose;
ret = v4l2_subdev_call(&vsp1->bru->entity.subdev, pad, set_selection,
NULL, &sel);
@@ -410,32 +412,13 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int rpf_index,
__func__, sel.r.left, sel.r.top, sel.r.width, sel.r.height,
sel.pad);
- /* Store the BRU input pad number in the RPF. */
- rpf->bru_input = rpf->entity.index;
-
- /* Cache the memory buffer address but don't apply the values to the
- * hardware as the crop offsets haven't been computed yet.
- */
- rpf->mem.addr[0] = mem[0];
- rpf->mem.addr[1] = mem[1];
- rpf->mem.addr[2] = 0;
-
- spin_lock_irqsave(&pipe->irqlock, flags);
-
- /* If the RPF was previously stopped set the BRU input to the RPF and
- * store the RPF in the pipeline inputs array.
- */
- if (!pipe->inputs[rpf->entity.index]) {
- vsp1->bru->inputs[rpf_index].rpf = rpf;
- pipe->inputs[rpf->entity.index] = rpf;
- pipe->num_inputs++;
- }
-
- spin_unlock_irqrestore(&pipe->irqlock, flags);
-
return 0;
}
-EXPORT_SYMBOL_GPL(vsp1_du_atomic_update);
+
+static unsigned int rpf_zpos(struct vsp1_device *vsp1, struct vsp1_rwpf *rpf)
+{
+ return vsp1->drm->inputs[rpf->entity.index].zpos;
+}
/**
* vsp1_du_atomic_flush - Commit an atomic update
@@ -445,10 +428,60 @@ void vsp1_du_atomic_flush(struct device *dev)
{
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
struct vsp1_pipeline *pipe = &vsp1->drm->pipe;
+ struct vsp1_rwpf *inputs[VSP1_MAX_RPF] = { NULL, };
struct vsp1_entity *entity;
unsigned long flags;
- bool stop = false;
+ unsigned int i;
+ int ret;
+
+ /* Count the number of enabled inputs and sort them by Z-order. */
+ pipe->num_inputs = 0;
+
+ for (i = 0; i < vsp1->info->rpf_count; ++i) {
+ struct vsp1_rwpf *rpf = vsp1->rpf[i];
+ unsigned int j;
+
+ if (!vsp1->drm->inputs[i].enabled) {
+ pipe->inputs[i] = NULL;
+ continue;
+ }
+
+ pipe->inputs[i] = rpf;
+
+ /* Insert the RPF in the sorted RPFs array. */
+ for (j = pipe->num_inputs++; j > 0; --j) {
+ if (rpf_zpos(vsp1, inputs[j-1]) <= rpf_zpos(vsp1, rpf))
+ break;
+ inputs[j] = inputs[j-1];
+ }
+ inputs[j] = rpf;
+ }
+
+ /* Setup the RPF input pipeline for every enabled input. */
+ for (i = 0; i < vsp1->info->num_bru_inputs; ++i) {
+ struct vsp1_rwpf *rpf = inputs[i];
+
+ if (!rpf) {
+ vsp1->bru->inputs[i].rpf = NULL;
+ continue;
+ }
+
+ vsp1->bru->inputs[i].rpf = rpf;
+ rpf->bru_input = i;
+ rpf->entity.sink_pad = i;
+
+ dev_dbg(vsp1->dev, "%s: connecting RPF.%u to BRU:%u\n",
+ __func__, rpf->entity.index, i);
+
+ ret = vsp1_du_setup_rpf_pipe(vsp1, rpf, i);
+ if (ret < 0)
+ dev_err(vsp1->dev,
+ "%s: failed to setup RPF.%u\n",
+ __func__, rpf->entity.index);
+ }
+
+ /* Configure all entities in the pipeline. */
list_for_each_entry(entity, &pipe->entities, list_pipe) {
/* Disconnect unused RPFs from the pipeline. */
if (entity->type == VSP1_ENTITY_RPF) {
@@ -466,6 +499,9 @@ void vsp1_du_atomic_flush(struct device *dev)
if (entity->ops->configure)
entity->ops->configure(entity, pipe, pipe->dl);
+ /* The memory buffer address must be applied after configuring
+ * the RPF to make sure the crop offset are computed.
+ */
if (entity->type == VSP1_ENTITY_RPF)
vsp1_rwpf_set_memory(to_rwpf(&entity->subdev),
pipe->dl);
@@ -475,19 +511,13 @@ void vsp1_du_atomic_flush(struct device *dev)
pipe->dl = NULL;
/* Start or stop the pipeline if needed. */
- spin_lock_irqsave(&pipe->irqlock, flags);
-
if (!vsp1->drm->num_inputs && pipe->num_inputs) {
vsp1_write(vsp1, VI6_DISP_IRQ_STA, 0);
vsp1_write(vsp1, VI6_DISP_IRQ_ENB, VI6_DISP_IRQ_ENB_DSTE);
+ spin_lock_irqsave(&pipe->irqlock, flags);
vsp1_pipeline_run(pipe);
+ spin_unlock_irqrestore(&pipe->irqlock, flags);
} else if (vsp1->drm->num_inputs && !pipe->num_inputs) {
- stop = true;
- }
-
- spin_unlock_irqrestore(&pipe->irqlock, flags);
-
- if (stop) {
vsp1_write(vsp1, VI6_DISP_IRQ_ENB, 0);
vsp1_pipeline_stop(pipe);
}
diff --git a/drivers/media/platform/vsp1/vsp1_drm.h b/drivers/media/platform/vsp1/vsp1_drm.h
index e9242f2c870e..9e28ab9254ba 100644
--- a/drivers/media/platform/vsp1/vsp1_drm.h
+++ b/drivers/media/platform/vsp1/vsp1_drm.h
@@ -13,18 +13,26 @@
#ifndef __VSP1_DRM_H__
#define __VSP1_DRM_H__
+#include <linux/videodev2.h>
+
#include "vsp1_pipe.h"
/**
* vsp1_drm - State for the API exposed to the DRM driver
* @pipe: the VSP1 pipeline used for display
* @num_inputs: number of active pipeline inputs at the beginning of an update
- * @update: the pipeline configuration has been updated
+ * @planes: source crop rectangle, destination compose rectangle and z-order
+ * position for every input
*/
struct vsp1_drm {
struct vsp1_pipeline pipe;
unsigned int num_inputs;
- bool update;
+ struct {
+ bool enabled;
+ struct v4l2_rect crop;
+ struct v4l2_rect compose;
+ unsigned int zpos;
+ } inputs[VSP1_MAX_RPF];
};
int vsp1_drm_init(struct vsp1_device *vsp1);
diff --git a/drivers/media/platform/vsp1/vsp1_pipe.c b/drivers/media/platform/vsp1/vsp1_pipe.c
index 4913b933562c..15e028321fa1 100644
--- a/drivers/media/platform/vsp1/vsp1_pipe.c
+++ b/drivers/media/platform/vsp1/vsp1_pipe.c
@@ -200,6 +200,7 @@ void vsp1_pipeline_init(struct vsp1_pipeline *pipe)
pipe->state = VSP1_PIPELINE_STOPPED;
}
+/* Must be called with the pipe irqlock held. */
void vsp1_pipeline_run(struct vsp1_pipeline *pipe)
{
struct vsp1_device *vsp1 = pipe->output->entity.vsp1;
diff --git a/include/media/vsp1.h b/include/media/vsp1.h
index d01f7cb8f691..e54a493bd3ff 100644
--- a/include/media/vsp1.h
+++ b/include/media/vsp1.h
@@ -24,10 +24,20 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int width,
unsigned int height);
void vsp1_du_atomic_begin(struct device *dev);
-int vsp1_du_atomic_update(struct device *dev, unsigned int rpf, u32 pixelformat,
- unsigned int pitch, dma_addr_t mem[2],
- const struct v4l2_rect *src,
- const struct v4l2_rect *dst);
+int vsp1_du_atomic_update_ext(struct device *dev, unsigned int rpf,
+ u32 pixelformat, unsigned int pitch,
+ dma_addr_t mem[2], const struct v4l2_rect *src,
+ const struct v4l2_rect *dst, unsigned int zpos);
void vsp1_du_atomic_flush(struct device *dev);
+static inline int vsp1_du_atomic_update(struct device *dev,
+ unsigned int rpf_index, u32 pixelformat,
+ unsigned int pitch, dma_addr_t mem[2],
+ const struct v4l2_rect *src,
+ const struct v4l2_rect *dst)
+{
+ return vsp1_du_atomic_update_ext(dev, rpf_index, pixelformat, pitch,
+ mem, src, dst, 0);
+}
+
#endif /* __MEDIA_VSP1_H__ */
--
2.7.3
--
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