[PATCH v2 8/8] media: renesas: vsp1: Implement control events

[Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>]

The V4L2 API requires drivers that expose controls to implement control
notification events. This is enforced by v4l2-compliance. Add event
handling to the VSP1 entities that create controls to fix the compliance
failures.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Reviewed-by: Jacopo Mondi <jacopo.mondi+renesas@xxxxxxxxxxxxxxxx>
---
 drivers/media/platform/renesas/vsp1/vsp1_brx.c    | 1 +
 drivers/media/platform/renesas/vsp1/vsp1_clu.c    | 1 +
 drivers/media/platform/renesas/vsp1/vsp1_entity.c | 9 +++++++++
 drivers/media/platform/renesas/vsp1/vsp1_entity.h | 2 ++
 drivers/media/platform/renesas/vsp1/vsp1_histo.c  | 1 +
 drivers/media/platform/renesas/vsp1/vsp1_lut.c    | 1 +
 drivers/media/platform/renesas/vsp1/vsp1_rwpf.c   | 1 +
 drivers/media/platform/renesas/vsp1/vsp1_sru.c    | 1 +
 8 files changed, 17 insertions(+)

diff --git a/drivers/media/platform/renesas/vsp1/vsp1_brx.c b/drivers/media/platform/renesas/vsp1/vsp1_brx.c
index 911359faa600..b1a2c68e9944 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_brx.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_brx.c
@@ -269,6 +269,7 @@ static const struct v4l2_subdev_pad_ops brx_pad_ops = {
 };
 
 static const struct v4l2_subdev_ops brx_ops = {
+	.core	= &vsp1_entity_core_ops,
 	.pad    = &brx_pad_ops,
 };
 
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_clu.c b/drivers/media/platform/renesas/vsp1/vsp1_clu.c
index a56c038a2c71..04c466c4da81 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_clu.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_clu.c
@@ -130,6 +130,7 @@ static const struct v4l2_subdev_pad_ops clu_pad_ops = {
 };
 
 static const struct v4l2_subdev_ops clu_ops = {
+	.core	= &vsp1_entity_core_ops,
 	.pad    = &clu_pad_ops,
 };
 
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_entity.c b/drivers/media/platform/renesas/vsp1/vsp1_entity.c
index 892a2adfdf3a..839b75b62ceb 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_entity.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_entity.c
@@ -14,6 +14,7 @@
 
 #include <media/media-entity.h>
 #include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
 #include <media/v4l2-subdev.h>
 
 #include "vsp1.h"
@@ -396,6 +397,11 @@ static const struct v4l2_subdev_internal_ops vsp1_entity_internal_ops = {
 	.init_state = vsp1_entity_init_state,
 };
 
+const struct v4l2_subdev_core_ops vsp1_entity_core_ops = {
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
 /* -----------------------------------------------------------------------------
  * Media Operations
  */
@@ -639,6 +645,9 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
 	subdev->entity.ops = &vsp1->media_ops;
 	subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 
+	if (ops->core == &vsp1_entity_core_ops)
+		subdev->flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
+
 	snprintf(subdev->name, sizeof(subdev->name), "%s %s",
 		 dev_name(vsp1->dev), name);
 
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_entity.h b/drivers/media/platform/renesas/vsp1/vsp1_entity.h
index 88daf83cd1ab..c0c1fe7d3e40 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_entity.h
+++ b/drivers/media/platform/renesas/vsp1/vsp1_entity.h
@@ -143,6 +143,8 @@ static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
 	return container_of(subdev, struct vsp1_entity, subdev);
 }
 
+extern const struct v4l2_subdev_core_ops vsp1_entity_core_ops;
+
 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
 		     const char *name, unsigned int num_pads,
 		     const struct v4l2_subdev_ops *ops, u32 function);
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_histo.c b/drivers/media/platform/renesas/vsp1/vsp1_histo.c
index a1b3671a0873..158d01aa5e81 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_histo.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_histo.c
@@ -370,6 +370,7 @@ static const struct v4l2_subdev_pad_ops histo_pad_ops = {
 };
 
 static const struct v4l2_subdev_ops histo_ops = {
+	.core	= &vsp1_entity_core_ops,
 	.pad    = &histo_pad_ops,
 };
 
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_lut.c b/drivers/media/platform/renesas/vsp1/vsp1_lut.c
index 2ec4d596465d..94bdedcc5c92 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_lut.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_lut.c
@@ -106,6 +106,7 @@ static const struct v4l2_subdev_pad_ops lut_pad_ops = {
 };
 
 static const struct v4l2_subdev_ops lut_ops = {
+	.core	= &vsp1_entity_core_ops,
 	.pad    = &lut_pad_ops,
 };
 
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c b/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
index c9e6fb98f863..c72518b29f84 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_rwpf.c
@@ -357,6 +357,7 @@ static const struct v4l2_subdev_pad_ops vsp1_rwpf_pad_ops = {
 };
 
 const struct v4l2_subdev_ops vsp1_rwpf_subdev_ops = {
+	.core	= &vsp1_entity_core_ops,
 	.pad    = &vsp1_rwpf_pad_ops,
 };
 
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_sru.c b/drivers/media/platform/renesas/vsp1/vsp1_sru.c
index 37fd36d09045..94149da0c900 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_sru.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_sru.c
@@ -252,6 +252,7 @@ static const struct v4l2_subdev_pad_ops sru_pad_ops = {
 };
 
 static const struct v4l2_subdev_ops sru_ops = {
+	.core	= &vsp1_entity_core_ops,
 	.pad    = &sru_pad_ops,
 };
 
-- 
Regards,

Laurent Pinchart