The control is used to configure the fixed alpha channel value, when
reading from memory in the RPF or writing to memory in the WPF.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_rpf.c | 52 ++++++++++++++++++++++++++++---
drivers/media/platform/vsp1/vsp1_rwpf.h | 2 ++
drivers/media/platform/vsp1/vsp1_wpf.c | 54 +++++++++++++++++++++++++++++++++
3 files changed, 104 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c
index 2824f53..576779f 100644
--- a/drivers/media/platform/vsp1/vsp1_rpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rpf.c
@@ -39,6 +39,32 @@ static inline void vsp1_rpf_write(struct vsp1_rwpf *rpf, u32 reg, u32 data)
}
/* -----------------------------------------------------------------------------
+ * Controls
+ */
+
+static int rpf_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vsp1_rwpf *rpf =
+ container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
+
+ if (!vsp1_entity_is_streaming(&rpf->entity))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_ALPHA_COMPONENT:
+ vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET,
+ ctrl->val << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
+ break;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops rpf_ctrl_ops = {
+ .s_ctrl = rpf_s_ctrl,
+};
+
+/* -----------------------------------------------------------------------------
* V4L2 Subdevice Core Operations
*/
@@ -50,6 +76,11 @@ static int rpf_s_stream(struct v4l2_subdev *subdev, int enable)
const struct v4l2_rect *crop = &rpf->crop;
u32 pstride;
u32 infmt;
+ int ret;
+
+ ret = vsp1_entity_set_streaming(&rpf->entity, enable);
+ if (ret < 0)
+ return ret;
if (!enable)
return 0;
@@ -101,14 +132,13 @@ static int rpf_s_stream(struct v4l2_subdev *subdev, int enable)
(rpf->location.left << VI6_RPF_LOC_HCOORD_SHIFT) |
(rpf->location.top << VI6_RPF_LOC_VCOORD_SHIFT));
- /* Use the alpha channel (extended to 8 bits) when available or a
- * hardcoded 255 value otherwise. Disable color keying.
+ /* Use the alpha channel (extended to 8 bits) when available or an
+ * alpha value set through the V4L2_CID_ALPHA_COMPONENT control
+ * otherwise. Disable color keying.
*/
vsp1_rpf_write(rpf, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT |
(fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED
: VI6_RPF_ALPH_SEL_ASEL_FIXED));
- vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET,
- 255 << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
vsp1_rpf_write(rpf, VI6_RPF_MSK_CTRL, 0);
vsp1_rpf_write(rpf, VI6_RPF_CKEY_CTRL, 0);
@@ -198,6 +228,20 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
vsp1_entity_init_formats(subdev, NULL);
+ /* Initialize the control handler. */
+ v4l2_ctrl_handler_init(&rpf->ctrls, 1);
+ v4l2_ctrl_new_std(&rpf->ctrls, &rpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
+ 0, 255, 1, 255);
+
+ rpf->entity.subdev.ctrl_handler = &rpf->ctrls;
+
+ if (rpf->ctrls.error) {
+ dev_err(vsp1->dev, "rpf%u: failed to initialize controls\n",
+ index);
+ ret = rpf->ctrls.error;
+ goto error;
+ }
+
/* Initialize the video device. */
video = &rpf->video;
diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h
index b4fb65e..28dd9e7 100644
--- a/drivers/media/platform/vsp1/vsp1_rwpf.h
+++ b/drivers/media/platform/vsp1/vsp1_rwpf.h
@@ -14,6 +14,7 @@
#define __VSP1_RWPF_H__
#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include "vsp1.h"
@@ -26,6 +27,7 @@
struct vsp1_rwpf {
struct vsp1_entity entity;
struct vsp1_video video;
+ struct v4l2_ctrl_handler ctrls;
unsigned int max_width;
unsigned int max_height;
diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c
index a2ba107..6e05776 100644
--- a/drivers/media/platform/vsp1/vsp1_wpf.c
+++ b/drivers/media/platform/vsp1/vsp1_wpf.c
@@ -39,6 +39,35 @@ static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf, u32 reg, u32 data)
}
/* -----------------------------------------------------------------------------
+ * Controls
+ */
+
+static int wpf_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vsp1_rwpf *wpf =
+ container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
+ u32 value;
+
+ if (!vsp1_entity_is_streaming(&wpf->entity))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_ALPHA_COMPONENT:
+ value = vsp1_wpf_read(wpf, VI6_WPF_OUTFMT);
+ value &= ~VI6_WPF_OUTFMT_PDV_MASK;
+ value |= ctrl->val << VI6_WPF_OUTFMT_PDV_SHIFT;
+ vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, value);
+ break;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops wpf_ctrl_ops = {
+ .s_ctrl = wpf_s_ctrl,
+};
+
+/* -----------------------------------------------------------------------------
* V4L2 Subdevice Core Operations
*/
@@ -51,6 +80,11 @@ static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
unsigned int i;
u32 srcrpf = 0;
u32 outfmt = 0;
+ int ret;
+
+ ret = vsp1_entity_set_streaming(&wpf->entity, enable);
+ if (ret < 0)
+ return ret;
if (!enable) {
vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
@@ -113,7 +147,13 @@ static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
wpf->entity.formats[RWPF_PAD_SOURCE].code)
outfmt |= VI6_WPF_OUTFMT_CSC;
+ /* Take the control handler lock to ensure that the PDV value won't be
+ * changed behind our back by a set control operation.
+ */
+ mutex_lock(wpf->ctrls.lock);
+ outfmt |= vsp1_wpf_read(wpf, VI6_WPF_OUTFMT) & VI6_WPF_OUTFMT_PDV_MASK;
vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, outfmt);
+ mutex_unlock(wpf->ctrls.lock);
vsp1_write(vsp1, VI6_DPR_WPF_FPORCH(wpf->entity.index),
VI6_DPR_WPF_FPORCH_FP_WPFN);
@@ -209,6 +249,20 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
vsp1_entity_init_formats(subdev, NULL);
+ /* Initialize the control handler. */
+ v4l2_ctrl_handler_init(&wpf->ctrls, 1);
+ v4l2_ctrl_new_std(&wpf->ctrls, &wpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT,
+ 0, 255, 1, 255);
+
+ wpf->entity.subdev.ctrl_handler = &wpf->ctrls;
+
+ if (wpf->ctrls.error) {
+ dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
+ index);
+ ret = wpf->ctrls.error;
+ goto error;
+ }
+
/* Initialize the video device. */
video = &wpf->video;
--
1.8.5.5
--
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