[RFC v2 0/8] Acer Chromebook R13 support

[Matthias Brugger]

Hi Ulrich,

On 10/16/2017 05:31 PM, Ulrich Hecht wrote:
> Hi!
> 
> This is a new revision of the Acer Chromebook R13 support series. It does
> not offer anything new in terms of functionality, but eliminates three out
> of four ugly hacks and adds a few minor cleanups; see below for details.
> Thanks to Robin Murphy and CK Hu for their comments and suggestions!
> 
> I'm still looking for advice on how to implement the dual-role mmsys device
> correctly; see "hack: mediatek: get mmsys to register as both DRM and clock
> device" for details on this.
> 
> Like the previous revision, you can find this series at
> https://github.com/uli/kernel/tree/elm-working, which also contains a config
> file and several ancillary bits that are required to build a kernel
> partition for the Chromebook. Instructions on how to do so (and various
> other things that have to be done to get it running on your device) are
> available at
> https://www.elinux.org/User:Uli/Acer_Chromebook_R13_GPU_test_system (These
> instructions have been written for the vendor kernel, but apply to mainline
> as well, except that you won't need any extra patches.)
> 

I appreciate your efforts to get this done. From what I understand you rebased 
the patches from the chromium kernel to mainline. So you should keep the 
signed-off-by from the original author and just add you signed-off-by below that.
Also it would be nice to CC these persons so that they are aware of your effort.

> CU
> Uli
> 
> Changes since RFC v1:
> - cmdq: remove obsolete driver; not currently used anyway

Are you sure about this? I remember that Dan (CC'ed) told me that this is one of 
the requirements to get upstream working.

Dan, can you clarify please?

Regards,
Matthias

> - dt: remove CD GPIO from mmc1, does not seem to be correct
> - mmc: remove mtk-sd.c revert hack (works fine without the CD pin)
> - dsi: fix port number for drm_of_find_panel_or_bridge(), remove hack
> - fbdev: add missing Signed-off-bys
> - iommu: remove io-pgtable sanity check hack, has been properly fixed
> - minor style fixes
> 
> 
> Ulrich Hecht (8):
>    drm/bridge: GPIO-controlled display multiplexer driver
>    platform/chrome: ChromeOS firmware interface driver
>    drm/bridge: Parade PS8640 MIPI DSI -> eDP converter driver
>    drm/bridge: Analogix ANX7688 HDMI -> DP bridge driver
>    arm64: dts: mediatek: Add Elm Rev. 3 device tree
>    hack: mediatek: get mmsys to register as both DRM and clock device
>    drm/mediatek: Add DRM-based framebuffer device
>    drm: mediatek: Fix drm_of_find_panel_or_bridge conversion
> 
>   arch/arm64/boot/dts/mediatek/Makefile            |    1 +
>   arch/arm64/boot/dts/mediatek/mt8173-elm-rev3.dts |   21 +
>   arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi     |  210 ++++
>   arch/arm64/boot/dts/mediatek/mt8173-oak.dtsi     | 1013 ++++++++++++++++++++
>   drivers/clk/mediatek/clk-mt8173.c                |    4 +-
>   drivers/gpu/drm/bridge/Kconfig                   |   32 +
>   drivers/gpu/drm/bridge/Makefile                  |    5 +
>   drivers/gpu/drm/bridge/analogix-anx7688.c        |  233 +++++
>   drivers/gpu/drm/bridge/generic-gpio-mux.c        |  316 +++++++
>   drivers/gpu/drm/bridge/parade-ps8640.c           | 1104 ++++++++++++++++++++++
>   drivers/gpu/drm/mediatek/Makefile                |    2 +
>   drivers/gpu/drm/mediatek/mtk_dpi.c               |    5 +-
>   drivers/gpu/drm/mediatek/mtk_drm_ddp.c           |    5 +-
>   drivers/gpu/drm/mediatek/mtk_drm_drv.c           |   15 +
>   drivers/gpu/drm/mediatek/mtk_drm_drv.h           |    4 +-
>   drivers/gpu/drm/mediatek/mtk_drm_fb.c            |   13 +
>   drivers/gpu/drm/mediatek/mtk_drm_fb.h            |    3 +
>   drivers/gpu/drm/mediatek/mtk_drm_fbdev.c         |  181 ++++
>   drivers/gpu/drm/mediatek/mtk_drm_fbdev.h         |   32 +
>   drivers/gpu/drm/mediatek/mtk_dsi.c               |    2 +-
>   drivers/gpu/drm/mediatek/mtk_hdmi.c              |    5 +-
>   drivers/platform/chrome/Kconfig                  |   18 +
>   drivers/platform/chrome/Makefile                 |    2 +
>   drivers/platform/chrome/chromeos.c               |  120 +++
>   drivers/platform/chrome/chromeos.h               |   61 ++
>   drivers/platform/chrome/chromeos_arm.c           |  264 ++++++
>   drivers/platform/chrome/elog.h                   |  186 ++++
>   include/linux/chromeos_platform.h                |   27 +
>   28 files changed, 3874 insertions(+), 10 deletions(-)
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt8173-elm-rev3.dts
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt8173-oak.dtsi
>   create mode 100644 drivers/gpu/drm/bridge/analogix-anx7688.c
>   create mode 100644 drivers/gpu/drm/bridge/generic-gpio-mux.c
>   create mode 100644 drivers/gpu/drm/bridge/parade-ps8640.c
>   create mode 100644 drivers/gpu/drm/mediatek/mtk_drm_fbdev.c
>   create mode 100644 drivers/gpu/drm/mediatek/mtk_drm_fbdev.h
>   create mode 100644 drivers/platform/chrome/chromeos.c
>   create mode 100644 drivers/platform/chrome/chromeos.h
>   create mode 100644 drivers/platform/chrome/chromeos_arm.c
>   create mode 100644 drivers/platform/chrome/elog.h
>   create mode 100644 include/linux/chromeos_platform.h
>