linux-kernel - Re: mxsfb: DATA_FORMAT_24_BIT flag outputs invalid colours

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Date:	Fri, 07 Jun 2013 09:34:01 +0200
From:	Juergen Beisert <jbe@...gutronix.de>
To:	Hector Palacios <hector.palacios@...i.com>
CC:	"maxime.ripard@...e-electrons.com" <maxime.ripard@...e-electrons.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"fabio.estevam@...escale.com" <fabio.estevam@...escale.com>,
	"brian@...stalfontz.com" <brian@...stalfontz.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: Re: mxsfb: DATA_FORMAT_24_BIT flag outputs invalid colours

Hi Hector,

On 07.06.2013 09:28, Hector Palacios wrote:
> On 06/07/2013 09:21 AM, maxime.ripard@...e-electrons.com wrote:
>> Hi Hector,
>>
>> On Fri, May 24, 2013 at 03:33:19PM +0200, Juergen Beisert wrote:
>>> Someone told me, Qt5 cannot handle this special RGB666 mode (even not the
>>> def_rgb666_shift memory layout mentioned above). My test are based on Qt4.
>>> Qt5 needs a regular RGB888 mode, which should silently be converted
>>> internally to RGB666 in the hardware.
>>>
>>> So, your patch to always use the RGB888 memory layout seems to be the right
>>> way to go.
>>
>> Do you plan on submitting this patch? (Or did you already submit it and
>> I overlooked it?)
> 
> I wasn't sure that everybody involved agreed with the patch.
> @Juergen, would the patch break your platform?

No, we need to switch to this data format here, too.

> Additionally, the guys from Crystalfontz didn't comment on it, but their platform is 
> also using a 18bit data bus width and 32bpp.
> 
> If no-one is against I'll be glad to submit it.

You can have my Acked-by: Juergen Beisert <jbe@...gutronix.de> for this patch.

Regards,
Juergen

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