[PATCH randrproto] Add a "GUID" property

[Aaron Plattner]

These things actually exist in the real world now:

http://accessories.us.dell.com/sna/productdetail.aspx?sku=225-4429
http://accessories.us.dell.com/sna/productdetail.aspx?sku=320-9567
and most ridiculously,
http://accessories.us.dell.com/sna/productdetail.aspx?sku=225-4201

Once this is a real, specified property, I'll probably want to add 
special handling of it in xrandr:

DP-3.8 connected primary 2560x1080+0+0 (normal left inverted right x 
axis y axis) 673mm x 284mm
	_GUID: 16 -34 -112 112 0 4 -36 38 -81 78 -30 27 0 0 0 22

On 06/12/2012 12:32 PM, Aaron Plattner wrote:
> This property represents the globally-unique identifier of the connected
> display, if one is available.
>
> Signed-off-by: Aaron Plattner <aplattner at nvidia.com>
> Reviewed-by: Andy Ritger <aritger at nvidia.com>
> ---
>   randr.h        |    1 +
>   randrproto.txt |   12 ++++++++++++
>   2 files changed, 13 insertions(+)
>
> diff --git a/randr.h b/randr.h
> index 9cb9403..53e2660 100644
> --- a/randr.h
> +++ b/randr.h
> @@ -183,5 +183,6 @@ typedef unsigned long	XRandrModeFlags;
>   #define RR_PROPERTY_CLONE_LIST		"CloneList"
>   #define RR_PROPERTY_BORDER		"Border"
>   #define RR_PROPERTY_BORDER_DIMENSIONS	"BorderDimensions"
> +#define RR_PROPERTY_GUID		"GUID"
>
>   #endif	/* _RANDR_H_ */
> diff --git a/randrproto.txt b/randrproto.txt
> index e90b1cd..2190540 100644
> --- a/randrproto.txt
> +++ b/randrproto.txt
> @@ -1856,6 +1856,17 @@ doesn't handle a mandatory property correctly.
>   	  2 = left/right and top/bottom borders can be specified independently
>   	  4 = all four borders can be specified independently
>
> +    "GUID"			aka RR_PROPERTY_GUID
> +	Type:			INTEGER
> +	Format:			8
> +	Num items:		16
> +	Flags:			Immutable
> +	Range/List:		-
> +
> +	Some display devices, such as DisplayPort 1.2 devices, have globally
> +	unique identifiers.  When such an identifier is available, this property
> +	contains its raw bytes.
> +
>
>   9.2 Properties introduced with version 1.2 of the RandR extension
>
> @@ -1889,6 +1900,7 @@ Property			Immutable	Mandatory since
>   ────────			─────────	───────────────
>   Border				yes		not mandatory
>   BorderDimensions		yes: static	not mandatory
> +GUID				yes		not mandatory
>
>   			      ❧❧❧❧❧❧❧❧❧❧❧
>
>


-- 
Aaron