linux-kernel - Re: [PATCH v3 0/3] drm/simpledrm: Apple M1 / DT platform support fixes

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Date:   Thu, 16 Dec 2021 11:13:57 +0100
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Hector Martin <marcan@...can.st>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        Javier Martinez Canillas <javier@...hile0.org>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>
Subject: Re: [PATCH v3 0/3] drm/simpledrm: Apple M1 / DT platform support
 fixes

Hi

Am 15.12.21 um 14:29 schrieb Thomas Zimmermann:
> Hi
> 
> Am 12.12.21 um 07:24 schrieb Hector Martin:
>> Hi DRM folks,
>>
>> This short series makes simpledrm work on Apple M1 (including Pro/Max)
>> platforms the way simplefb already does, by adding XRGB2101010 support
>> and making it bind to framebuffers in /chosen the same way simplefb
>> does.
>>
>> This avoids breaking the bootloader-provided framebuffer console when
>> simpledrm is selected to replace simplefb, as these FBs always seem to
>> be 10-bit (at least when a real screen is attached).
> 
> If there are no further comments, I'm going to apply the series to 
> drm-misc-next.

I've added the series.

Best regards
Thomas

> 
> Best regards
> Thomas
> 
>>
>> Changes since v2:
>> - Made 10-bit conversion code fill the LSBs
>> - Added ARGB2101010 to supported formats list
>> - Simplified OF core code per review feedback
>> Hector Martin (3):
>>    of: Move simple-framebuffer device handling from simplefb to of
>>    drm/format-helper: Add drm_fb_xrgb8888_to_xrgb2101010_toio()
>>    drm/simpledrm: Add [AX]RGB2101010 formats
>>
>>   drivers/gpu/drm/drm_format_helper.c | 64 +++++++++++++++++++++++++++++
>>   drivers/gpu/drm/tiny/simpledrm.c    |  4 +-
>>   drivers/of/platform.c               |  4 ++
>>   drivers/video/fbdev/simplefb.c      | 21 +---------
>>   include/drm/drm_format_helper.h     |  3 ++
>>   5 files changed, 74 insertions(+), 22 deletions(-)
>>
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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