linux-kernel - Re: [PATCH] dma: cases IPU_PIX_FMT_BGRA32, BGR32 and ABGR32 are the same in ipu_ch_param_set

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Date:	Wed, 20 Jan 2010 20:21:00 +0100 (CET)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Roel Kluin <roel.kluin@...il.com>
cc:	Dan Williams <dan.j.williams@...el.com>,
	Maciej Sosnowski <maciej.sosnowski@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dma: cases IPU_PIX_FMT_BGRA32, BGR32 and ABGR32 are the
 same in ipu_ch_param_set_size()

On Wed, 20 Jan 2010, Roel Kluin wrote:

> In these cases the same statements are executed.
> 
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>

Acked-by: Guennadi Liakhovetski <g.liakhovetski@....de>

Thanks
Guennadi

> ---
> But was this intended? if not, what should differ? bpp?
> 
> diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
> index 9a5bc1a..1c518f1 100644
> --- a/drivers/dma/ipu/ipu_idmac.c
> +++ b/drivers/dma/ipu/ipu_idmac.c
> @@ -348,6 +348,7 @@ static void ipu_ch_param_set_size(union chan_param_mem *params,
>  		break;
>  	case IPU_PIX_FMT_BGRA32:
>  	case IPU_PIX_FMT_BGR32:
> +	case IPU_PIX_FMT_ABGR32:
>  		params->ip.bpp	= 0;
>  		params->ip.pfs	= 4;
>  		params->ip.npb	= 7;
> @@ -376,20 +377,6 @@ static void ipu_ch_param_set_size(union chan_param_mem *params,
>  		params->ip.wid2	= 7;		/* Blue bit width - 1 */
>  		params->ip.wid3	= 7;		/* Alpha bit width - 1 */
>  		break;
> -	case IPU_PIX_FMT_ABGR32:
> -		params->ip.bpp	= 0;
> -		params->ip.pfs	= 4;
> -		params->ip.npb	= 7;
> -		params->ip.sat	= 2;		/* SAT = 32-bit access */
> -		params->ip.ofs0	= 8;		/* Red bit offset */
> -		params->ip.ofs1	= 16;		/* Green bit offset */
> -		params->ip.ofs2	= 24;		/* Blue bit offset */
> -		params->ip.ofs3	= 0;		/* Alpha bit offset */
> -		params->ip.wid0	= 7;		/* Red bit width - 1 */
> -		params->ip.wid1	= 7;		/* Green bit width - 1 */
> -		params->ip.wid2	= 7;		/* Blue bit width - 1 */
> -		params->ip.wid3	= 7;		/* Alpha bit width - 1 */
> -		break;
>  	case IPU_PIX_FMT_UYVY:
>  		params->ip.bpp	= 2;
>  		params->ip.pfs	= 6;
> --
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> 

---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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