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SubjectRe: [PATCH RFC v2 1/4] media: i2c: adv7343: add support for asynchronous probing
Hi Prabhakar

On Mon, 22 Apr 2013, Prabhakar Lad wrote:

> From: Lad, Prabhakar <prabhakar.csengg@gmail.com>
>
> Both synchronous and asynchronous adv7343 subdevice probing is supported by
> this patch.
>
> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Hans Verkuil <hverkuil@xs4all.nl>
> Cc: Sakari Ailus <sakari.ailus@iki.fi>
> Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
> ---
> drivers/media/i2c/adv7343.c | 17 +++++++++++++----
> 1 files changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/i2c/adv7343.c b/drivers/media/i2c/adv7343.c
> index 9fc2b98..5b1417b 100644
> --- a/drivers/media/i2c/adv7343.c
> +++ b/drivers/media/i2c/adv7343.c
> @@ -27,6 +27,7 @@
> #include <linux/uaccess.h>
>
> #include <media/adv7343.h>
> +#include <media/v4l2-async.h>
> #include <media/v4l2-device.h>
> #include <media/v4l2-chip-ident.h>
> #include <media/v4l2-ctrls.h>
> @@ -44,6 +45,7 @@ struct adv7343_state {
> struct v4l2_subdev sd;
> struct v4l2_ctrl_handler hdl;
> const struct adv7343_platform_data *pdata;
> + struct v4l2_async_subdev_list asdl;

Do you still need this? Don't think it's needed any more with the latest
V4L2-async version.

Thanks
Guennadi

> u8 reg00;
> u8 reg01;
> u8 reg02;
> @@ -455,16 +457,22 @@ static int adv7343_probe(struct i2c_client *client,
> ADV7343_GAIN_DEF);
> state->sd.ctrl_handler = &state->hdl;
> if (state->hdl.error) {
> - int err = state->hdl.error;
> -
> - v4l2_ctrl_handler_free(&state->hdl);
> - return err;
> + err = state->hdl.error;
> + goto done;
> }
> v4l2_ctrl_handler_setup(&state->hdl);
>
> err = adv7343_initialize(&state->sd);
> if (err)
> + goto done;
> +
> + state->sd.dev = &client->dev;
> + err = v4l2_async_register_subdev(&state->sd);
> +
> +done:
> + if (err < 0)
> v4l2_ctrl_handler_free(&state->hdl);
> +
> return err;
> }
>
> @@ -473,6 +481,7 @@ static int adv7343_remove(struct i2c_client *client)
> struct v4l2_subdev *sd = i2c_get_clientdata(client);
> struct adv7343_state *state = to_state(sd);
>
> + v4l2_async_unregister_subdev(&state->sd);
> v4l2_device_unregister_subdev(sd);
> v4l2_ctrl_handler_free(&state->hdl);
>
> --
> 1.7.4.1
>

---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/


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