linux-kernel - Re: [PATCH v2 01/11] media: i2c: ov5645: Add V4L2_SUBDEV_FL_HAS

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Message-ID: <20240924223523.GJ7165@pendragon.ideasonboard.com>
Date: Wed, 25 Sep 2024 01:35:23 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Sakari Ailus <sakari.ailus@...ux.intel.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>,
	Hans Verkuil <hverkuil-cisco@...all.nl>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2 01/11] media: i2c: ov5645: Add
 V4L2_SUBDEV_FL_HAS_EVENTS and subscribe hooks

Hi Prabhakar,

Thank you for the patch.

On Tue, Sep 10, 2024 at 06:06:00PM +0100, Prabhakar wrote:
> 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>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.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
> 

-- 
Regards,

Laurent Pinchart