linux-kernel - [PATCH v2 2/2] media: ov6650: Register with asynchronous subdevice framework

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Message-Id: <20190329202903.5622-3-jmkrzyszt@gmail.com>
Date:   Fri, 29 Mar 2019 21:29:03 +0100
From:   Janusz Krzysztofik <jmkrzyszt@...il.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Janusz Krzysztofik <jmkrzyszt@...il.com>
Subject: [PATCH v2 2/2] media: ov6650: Register with asynchronous subdevice framework

Register V4L2 subdevice implemented by the driver to the V4L2
asynchronous subdevice framework.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@...il.com>
---
 drivers/media/i2c/ov6650.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
index de7d9790f054..50e60da73036 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -804,8 +804,9 @@ static int ov6650_prog_dflt(struct i2c_client *client)
 	return ret;
 }
 
-static int ov6650_video_probe(struct i2c_client *client)
+static int ov6650_video_probe(struct v4l2_subdev *sd)
 {
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct ov6650 *priv = to_ov6650(client);
 	u8		pidh, pidl, midh, midl;
 	int		ret;
@@ -817,7 +818,7 @@ static int ov6650_video_probe(struct i2c_client *client)
 		return ret;
 	}
 
-	ret = ov6650_s_power(&priv->subdev, 1);
+	ret = ov6650_s_power(sd, 1);
 	if (ret < 0)
 		goto eclkput;
 
@@ -855,7 +856,7 @@ static int ov6650_video_probe(struct i2c_client *client)
 		ret = v4l2_ctrl_handler_setup(&priv->hdl);
 
 done:
-	ov6650_s_power(&priv->subdev, 0);
+	ov6650_s_power(sd, 0);
 	if (!ret)
 		return 0;
 eclkput:
@@ -943,6 +944,10 @@ static const struct v4l2_subdev_ops ov6650_subdev_ops = {
 	.pad	= &ov6650_pad_ops,
 };
 
+static const struct v4l2_subdev_internal_ops ov6650_internal_ops = {
+	.registered = ov6650_video_probe,
+};
+
 /*
  * i2c_driver function
  */
@@ -1003,7 +1008,12 @@ static int ov6650_probe(struct i2c_client *client,
 	priv->code	  = MEDIA_BUS_FMT_YUYV8_2X8;
 	priv->colorspace  = V4L2_COLORSPACE_JPEG;
 
-	ret = ov6650_video_probe(client);
+	priv->subdev.internal_ops = &ov6650_internal_ops;
+	priv->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	snprintf(priv->subdev.name, sizeof(priv->subdev.name), "%s %d-%04x",
+		 did->name, i2c_adapter_id(client->adapter), client->addr);
+
+	ret = v4l2_async_register_subdev(&priv->subdev);
 	if (ret)
 		v4l2_ctrl_handler_free(&priv->hdl);
 
@@ -1015,7 +1025,7 @@ static int ov6650_remove(struct i2c_client *client)
 	struct ov6650 *priv = to_ov6650(client);
 
 	v4l2_clk_put(priv->clk);
-	v4l2_device_unregister_subdev(&priv->subdev);
+	v4l2_async_unregister_subdev(&priv->subdev);
 	v4l2_ctrl_handler_free(&priv->hdl);
 	return 0;
 }
-- 
2.19.2