linux-kernel - [RFC PATCH 01/12] media: i2c: ov5645: Add V4L2_SUBDEV_FL_HAS

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Message-Id: <20240904210719.52466-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Wed,  4 Sep 2024 22:07:08 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Kieran Bingham <kieran.bingham@...asonboard.com>,
	Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	Jacopo Mondi <jacopo.mondi@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [RFC PATCH 01/12] media: i2c: ov5645: Add V4L2_SUBDEV_FL_HAS_EVENTS and subscribe hooks

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

The OV5645 sensor exposes controls, so the V4L2_SUBDEV_FL_HAS_EVENTS flag
should be set and implement subscribe_event and unsubscribe_event hooks.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/media/i2c/ov5645.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
index 019979f553b1..6eedd0310b02 100644
--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -29,6 +29,7 @@
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
 #include <media/v4l2-fwnode.h>
 #include <media/v4l2-subdev.h>
 
@@ -1042,7 +1043,13 @@ static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = {
 	.get_selection = ov5645_get_selection,
 };
 
+static const struct v4l2_subdev_core_ops ov5645_core_ops = {
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
 static const struct v4l2_subdev_ops ov5645_subdev_ops = {
+	.core = &ov5645_core_ops,
 	.video = &ov5645_video_ops,
 	.pad = &ov5645_subdev_pad_ops,
 };
@@ -1178,7 +1185,7 @@ static int ov5645_probe(struct i2c_client *client)
 
 	v4l2_i2c_subdev_init(&ov5645->sd, client, &ov5645_subdev_ops);
 	ov5645->sd.internal_ops = &ov5645_internal_ops;
-	ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	ov5645->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
 	ov5645->pad.flags = MEDIA_PAD_FL_SOURCE;
 	ov5645->sd.dev = &client->dev;
 	ov5645->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
-- 
2.34.1