linux-kernel - Re: [PATCH 0/5] at91: atmel_lcdfb: regression fixes and cpu

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Message-ID: <51405126.3090009@atmel.com>
Date:	Wed, 13 Mar 2013 11:12:54 +0100
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Johan Hovold <jhovold@...il.com>, Olof Johansson <olof@...om.net>,
	"Arnd Bergmann" <arnd@...db.de>
CC:	<FlorianSchandinat@....de>,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-fbdev@...r.kernel.org>,
	<jacmet@...site.dk>
Subject: Re: [PATCH 0/5] at91: atmel_lcdfb: regression fixes and cpu_is removal

On 03/08/2013 10:37 AM, Nicolas Ferre :
> On 02/10/2013 07:45 PM, Johan Hovold :
>> On Sun, Feb 10, 2013 at 1:47 AM, Olof Johansson <olof@...om.net> wrote:
>>> On Fri, Feb 08, 2013 at 05:35:13PM +0100, Nicolas Ferre wrote:
>>>> These patches fix a regression in 16-bpp support for older SOCs which
>>>> use IBGR:555 rather than BGR:565 pixel layout. Use SOC-type to
>>>> determine if the controller uses the intensity-bit and restore the
>>>> old layout in that case.
>>>>
>>>> The last patch is a removal of uses of cpu_is_xxxx() macros in
>>>> atmel_lcdfb with a platform-device-id table and static
>>>> configurations.
>>>>
>>>>
>>>> Patches from Johan Hovold taken from: "[PATCH 0/3] atmel_lcdfb: fix
>>>> 16-bpp regression" and "[PATCH v2 0/3] ARM: at91/avr32/atmel_lcdfb:
>>>> remove cpu_is macros" patch series to form a clean patch series with
>>>> my signature.
>>>>
>>>> Arnd, Olof, as it seems that old fbdev drivers are not so much
>>>> reviewed those days, can we take the decision to queue this material
>>>> through arm-soc with other AT91 drivers updates?
>>>
>>> It would be beneficial to get an ack from Florian. Was he involved in
>>> the review of the code that regressed 16-bpp support in the first
>>> place? When was the regression introduced?
>>
>> In v3.4 by commit 787f9fd2328 ("atmel_lcdfb: support 16bit BGR:565 mode,
>> remove unsupported 15bit modes").
> 
> Arnd, Olof,
> 
> Please tell me if I can do something to ease the adoption of these
> patches during 3.9-rc timeframe (I can rebase it on top of 3.9-rc1 to
> avoid any conflict: the file board-neocore926.c was removed during the
> merge window).
> Johan has written the series a long time ago and we still do not have it
> in mainline.
> 
> If the option to ask Andrew is better in your opinion, please tell me.

In case we end-up with an agreement on the path those fixes should
follow, here is the location of my updated material rebased on top of 3.9-rc2:

The following changes since commit f6161aa153581da4a3867a2d1a7caf4be19b6ec9:

  Linux 3.9-rc2 (2013-03-10 16:54:19 -0700)

are available in the git repository at:

  git://github.com/at91linux/linux-at91.git at91-3.9-fixesLCD

for you to fetch changes up to bbd44f6bd9d1aa735b180b29b5719d63a8e87b55:

  ARM: at91/avr32/atmel_lcdfb: add platform device-id table (2013-03-13 11:05:12 +0100)

----------------------------------------------------------------
Johan Hovold (5):
      atmel_lcdfb: fix 16-bpp modes on older SOCs
      ARM: at91: fix LCD-wiring mode
      ARM: at91/avr32/atmel_lcdfb: add bus-clock entry
      atmel_lcdfb: move lcdcon2 register access to compute_hozval
      ARM: at91/avr32/atmel_lcdfb: add platform device-id table

 arch/arm/mach-at91/at91sam9261.c         |   2 +
 arch/arm/mach-at91/at91sam9261_devices.c |   6 +-
 arch/arm/mach-at91/at91sam9263.c         |   1 +
 arch/arm/mach-at91/at91sam9263_devices.c |   2 +-
 arch/arm/mach-at91/at91sam9g45.c         |   2 +
 arch/arm/mach-at91/at91sam9g45_devices.c |   6 +-
 arch/arm/mach-at91/at91sam9rl.c          |   1 +
 arch/arm/mach-at91/at91sam9rl_devices.c  |   2 +-
 arch/avr32/mach-at32ap/at32ap700x.c      |   6 +-
 drivers/video/atmel_lcdfb.c              | 130 +++++++++++++++++++++++++++--------
 include/video/atmel_lcdc.h               |   4 +-
 11 files changed, 126 insertions(+), 36 deletions(-)


Thanks, best regards,
-- 
Nicolas Ferre
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