linux-kernel - Re: [PATCH v2] simplefb: add support for a8b8g8r8 pixel format

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Date:	Fri, 07 Jun 2013 09:22:33 +0200
From:	Alexander van Heukelum <heukelum@...tmail.fm>
To:	Alexandre Courbot <acourbot@...dia.com>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Stephen Warren <swarren@...dotorg.org>,
	Olof Johansson <olof@...om.net>
Cc:	gnurou@...il.com, linux-kernel@...r.kernel.org,
	linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v2] simplefb: add support for a8b8g8r8 pixel format

On Fri, Jun 7, 2013, at 8:01, Alexandre Courbot wrote:
> A framebuffer of this format is set up by SHIELD's bootloader. This
> allows us to use it as a framebuffer console.
> 
> Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
> Acked-by: Olof Johansson <olof@...om.net>
> ---
> Changes from v1:
> - Added description to motivate the change
> - Added ack
> 
>  Documentation/devicetree/bindings/video/simple-framebuffer.txt | 1 +
>  drivers/video/simplefb.c                                       | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/video/simple-framebuffer.txt b/Documentation/devicetree/bindings/video/simple-framebuffer.txt
> index 3ea4605..70c26f3 100644
> --- a/Documentation/devicetree/bindings/video/simple-framebuffer.txt
> +++ b/Documentation/devicetree/bindings/video/simple-framebuffer.txt
> @@ -12,6 +12,7 @@ Required properties:
>  - stride: The number of bytes in each line of the framebuffer.
>  - format: The format of the framebuffer surface. Valid values are:
>    - r5g6b5 (16-bit pixels, d[15:11]=r, d[10:5]=g, d[4:0]=b).
> +  - a8b8g8r8 (32-bit pixels, d[31:24]=a, d[23:16]=b, d[15:8]=g, d[7:0]=r).
>  
>  Example:
>  
> diff --git a/drivers/video/simplefb.c b/drivers/video/simplefb.c
> index e2e9e3e..d7041aa 100644
> --- a/drivers/video/simplefb.c
> +++ b/drivers/video/simplefb.c
> @@ -84,6 +84,7 @@ struct simplefb_format {
>  
>  static struct simplefb_format simplefb_formats[] = {
>  	{ "r5g6b5", 16, {11, 5}, {5, 6}, {0, 5}, {0, 0} },
> +	{ "a8b8g8r8", 32, {0, 8}, {8, 8}, {16, 8}, {31, 8} },

Hi,

31? I assume in practice this doesn't influence anything, but I think it should have read 24.

Greetings,
    Alexander

>  };
>  
>  struct simplefb_params {
> -- 
> 1.8.3
> 
> --
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