linux-kernel - Re: [PATCH v2 01/10] v4l: of: add "newavmode" property for Analog Devices codecs

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Date:	Wed, 20 Jul 2016 09:37:20 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	Steve Longerbeam <slongerbeam@...il.com>, lars@...afoo.de
Cc:	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	Steve Longerbeam <steve_longerbeam@...tor.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: Re: [PATCH v2 01/10] v4l: of: add "newavmode" property for Analog
 Devices codecs

On 07/20/2016 02:03 AM, Steve Longerbeam wrote:
> This patch adds a "newavmode" boolean property as part of the v4l2 endpoint
> properties. This indicates an Analog Devices decoder is generating EAV/SAV
> codes to suit Analog Devices encoders.
> 
> Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
> Cc: Mauro Carvalho Chehab <mchehab@....samsung.com>
> Cc: Javier Martinez Canillas <javier@....samsung.com>
> Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>
> ---
>  Documentation/devicetree/bindings/media/video-interfaces.txt | 2 ++
>  drivers/media/v4l2-core/v4l2-of.c                            | 4 ++++
>  include/media/v4l2-mediabus.h                                | 5 +++++
>  3 files changed, 11 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt
> index 9cd2a36..6f2df51 100644
> --- a/Documentation/devicetree/bindings/media/video-interfaces.txt
> +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt
> @@ -88,6 +88,8 @@ Optional endpoint properties
>  - field-even-active: field signal level during the even field data transmission.
>  - pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock
>    signal.
> +- newavmode: a boolean property to indicate an Analog Devices decoder is
> +  operating in NEWAVMODE. Valid for BT.656 busses only.

This property is adv7180 specific and does not belong here.

Add this to Documentation/devicetree/bindings/media/i2c/adv7180.txt instead.

Nacked-by: Hans Verkuil <hans.verkuil@...co.com>

Regards,

	Hans

>  - sync-on-green-active: active state of Sync-on-green (SoG) signal, 0/1 for
>    LOW/HIGH respectively.
>  - data-lanes: an array of physical data lane indexes. Position of an entry
> diff --git a/drivers/media/v4l2-core/v4l2-of.c b/drivers/media/v4l2-core/v4l2-of.c
> index 93b3368..719a7d1 100644
> --- a/drivers/media/v4l2-core/v4l2-of.c
> +++ b/drivers/media/v4l2-core/v4l2-of.c
> @@ -109,6 +109,10 @@ static void v4l2_of_parse_parallel_bus(const struct device_node *node,
>  		flags |= v ? V4L2_MBUS_DATA_ACTIVE_HIGH :
>  			V4L2_MBUS_DATA_ACTIVE_LOW;
>  
> +	if (endpoint->bus_type == V4L2_MBUS_BT656 &&
> +	    of_get_property(node, "newavmode", &v))
> +		flags |= V4L2_MBUS_NEWAVMODE;
> +
>  	if (of_get_property(node, "slave-mode", &v))
>  		flags |= V4L2_MBUS_SLAVE;
>  	else
> diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h
> index 34cc99e..0bd5f0e 100644
> --- a/include/media/v4l2-mediabus.h
> +++ b/include/media/v4l2-mediabus.h
> @@ -43,6 +43,11 @@
>  /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
>  #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH	(1 << 12)
>  #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW		(1 << 13)
> +/*
> + * BT.656 specific flags
> + */
> +/* Analog Device's NEWAVMODE */
> +#define V4L2_MBUS_NEWAVMODE			(1 << 14)
>  
>  /* Serial flags */
>  /* How many lanes the client can use */
>