linux-kernel - Re: [PATCH 4/6] media: uvcvideo: Add Privacy control based on EXT

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Date:   Wed, 4 Nov 2020 13:37:29 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Ricardo Ribalda <ribalda@...omium.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        tfiga@...omium.org
Subject: Re: [PATCH 4/6] media: uvcvideo: Add Privacy control based on
 EXT_GPIO

Hi Ricardo,

Thank you for the patch.

On Thu, Oct 22, 2020 at 03:37:51PM +0200, Ricardo Ribalda wrote:
> Add a new control and mapping for Privacy controls connected to
> UVC_GUID_EXT_GPIO_CONTROLLERs.
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
> ---
>  drivers/media/usb/uvc/uvc_ctrl.c | 20 ++++++++++++++++++++
>  drivers/media/usb/uvc/uvcvideo.h |  2 +-
>  2 files changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index 913739915863..786498e66646 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -347,6 +347,16 @@ static const struct uvc_control_info uvc_ctrls[] = {
>  				| UVC_CTRL_FLAG_RESTORE
>  				| UVC_CTRL_FLAG_AUTO_UPDATE,
>  	},
> +	{
> +		.entity		= UVC_GUID_EXT_GPIO_CONTROLLER,
> +		.selector	= UVC_CT_PRIVACY_CONTROL,
> +		.index		= 0,
> +		.size		= 1,
> +		.flags		= UVC_CTRL_FLAG_GET_CUR
> +				| UVC_CTRL_FLAG_AUTO_UPDATE
> +				| UVC_CTRL_FLAG_ENTITY_GET_INFO
> +				| UVC_CTRL_FLAG_ENTITY_GET_CUR,
> +	},
>  };
>  
>  static const struct uvc_menu_info power_line_frequency_controls[] = {
> @@ -735,6 +745,16 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
>  		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
>  		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
>  	},
> +	{
> +		.id		= V4L2_CID_PRIVACY,
> +		.name		= "Privacy",
> +		.entity		= UVC_GUID_EXT_GPIO_CONTROLLER,
> +		.selector	= UVC_CT_PRIVACY_CONTROL,
> +		.size		= 1,
> +		.offset		= 0,
> +		.v4l2_type	= V4L2_CTRL_TYPE_BOOLEAN,
> +		.data_type	= UVC_CTRL_DATA_TYPE_BOOLEAN,
> +	},
>  };
>  
>  /* ------------------------------------------------------------------------
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index 8e5a9fc35820..a493bc383d3e 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -58,7 +58,7 @@
>  	 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02}
>  #define UVC_GUID_EXT_GPIO_CONTROLLER \
>  	{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf, \
> -	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01}
> +	 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01}

This belongs to the previous patch.

>  
>  #define UVC_GUID_FORMAT_MJPEG \
>  	{ 'M',  'J',  'P',  'G', 0x00, 0x00, 0x10, 0x00, \

-- 
Regards,

Laurent Pinchart