linux-kernel - [PATCH v2 0/3] drm/simpledrm: Apple M1 / DT platform support fixes

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Date:   Tue,  7 Dec 2021 16:29:40 +0900
From:   Hector Martin <marcan@...can.st>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Javier Martinez Canillas <javier@...hile0.org>,
        Pekka Paalanen <ppaalanen@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Hector Martin <marcan@...can.st>
Subject: [PATCH v2 0/3] drm/simpledrm: Apple M1 / DT platform support fixes

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).

Changes since v1:
- Moved the OF platform device setup code from simplefb into common
  code, instead of duplicating it in simpledrm
- Rebased on drm-tip

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 XRGB2101010 format

 drivers/gpu/drm/drm_format_helper.c | 62 +++++++++++++++++++++++++++++
 drivers/gpu/drm/tiny/simpledrm.c    |  2 +-
 drivers/of/platform.c               |  5 +++
 drivers/video/fbdev/simplefb.c      | 21 +---------
 include/drm/drm_format_helper.h     |  3 ++
 5 files changed, 72 insertions(+), 21 deletions(-)

-- 
2.33.0