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[media] ov9650: add support for asynchronous probing 

Allow the sub-device to be probed asynchronously so a bridge driver that's
waiting for the device can be notified and its .bound callback executed.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: H . Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
hifive-unleashed-5.1
Javier Martinez Canillas 2016-09-08 10:05:40 -03:00 committed by Mauro Carvalho Chehab
parent 22511cfa7d
commit 6dca6cf072
1 changed files with 6 additions and 1 deletions
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7
drivers/media/i2c/ov9650.c
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@ -23,6 +23,7 @@
#include <linux/videodev2.h>
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
@ -1520,6 +1521,10 @@ static int ov965x_probe(struct i2c_client *client,
/* Update exposure time min/max to match frame format */
ov965x_update_exposure_ctrl(ov965x);
ret = v4l2_async_register_subdev(sd);
if (ret < 0)
goto err_ctrls;
return 0;
err_ctrls:
v4l2_ctrl_handler_free(sd->ctrl_handler);
@ -1532,7 +1537,7 @@ static int ov965x_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
v4l2_async_unregister_subdev(sd);
v4l2_ctrl_handler_free(sd->ctrl_handler);
media_entity_cleanup(&sd->entity);