linux-kernel - Re: [PATCH v4 0/3] Add ilitek ili9341 panel driver

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Date:   Thu, 5 Aug 2021 16:55:23 +0800
From:   Dillon Min <dillon.minfei@...il.com>
To:     laurent.pinchart@...asonboard.com,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Dave Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre TORGUE <alexandre.torgue@...s.st.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        Peter Robinson <pbrobinson@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-stm32@...md-mailman.stormreply.com,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 0/3] Add ilitek ili9341 panel driver

Hi All

Just a gentle ping, thanks.

Best regards.
Dillon

On Sat, 24 Jul 2021 at 11:44, <dillon.minfei@...il.com> wrote:
>
> From: Dillon Min <dillon.minfei@...il.com>
>
> Since the st,sf-tc240t-9370-t dts binding already exist in stm32f429-disco.dts
> but, the panel driver didn't get accepted from mainline. it's time to submit
> patch fot it.
>
> This driver can support two different interface by different dts bindings:
> - spi+dpi, use spi to configure register, dpi for graphic data.
>   st,sf-tc240t-9370-t
> - only spi, just like tiny/ili9341.c (actually, this part is copy from tiny)
>   adafruit,yx240qv29
>
> I was submited the first patch last year, you can find it at [1].
> this patch has one major difference from that one, which is replace the low
> level communication way, from spi_sync() to mipi_dbi_{command,
> command_stackbuf}() interface, referred from Linus's patch [2].
>
> both the two dpi/dbi interface was tested on stm32f429-disco board, if anyone
> want to verify this patch, you need apply the clk patch for this board first,
> you can get it from [3].
>
> [1] "drm/panel: Add ilitek ili9341 panel driver"
> https://lore.kernel.org/lkml/1590378348-8115-7-git-send-email-dillon.minfei@gmail.com/
>
> [2] "drm/panel: s6e63m0: Switch to DBI abstraction for SPI"
> https://lore.kernel.org/dri-devel/20210611214243.669892-1-linus.walleij@linaro.org/
>
> [3]
> https://lore.kernel.org/lkml/1590378348-8115-6-git-send-email-dillon.minfei@gmail.com/
>
> v4:
> - fix m68k-allmodconfig build error which reported by lkp, thanks.
> - add Copyright 2018 David Lechner <david@...hnology.com>.
> v3 link:
> https://lore.kernel.org/lkml/1627013203-23099-1-git-send-email-dillon.minfei@gmail.com/
>
> v3:
> - add Fixes tags.
> - collect reviewed-by tags from linus and jagan.
> - replace DRM_ERROR() with dev_err() or drm_err().
> - remove kernel-doc markers from struct ili9341_config{}.
> - reorder include headers.
> - remove the struct device *dev from struct ili9341{}.
> - restructure the ili9341_probe() function, add two ili9341_{dbi,dpi)_probe()
>   to make it more readable according to jagan's suggestion, thanks.
>
> for the full drm driver exist in drm/panel need Sam and Laurent's feedback.
> so, not cover this part at this time, will be update later.
>
> v2 link:
> https://lore.kernel.org/lkml/1626853288-31223-1-git-send-email-dillon.minfei@gmail.com/
>
> v2:
> - replace vcc regulator to bulk regulators in driver, from linus suggestion.
> - fix dtbs_check warnings on ili9341 dts binding check.
> - add bulk regulation node in ilitek,ili9341.yaml.
> v1 link:
> https://lore.kernel.org/lkml/1626430843-23823-1-git-send-email-dillon.minfei@gmail.com/
>
> Dillon Min (3):
>   dt-bindings: display: panel: Add ilitek ili9341 panel bindings
>   ARM: dts: stm32: fix dtbs_check warning on ili9341 dts binding
>   drm/panel: Add ilitek ili9341 panel driver
>
>  .../bindings/display/panel/ilitek,ili9341.yaml     |  78 ++
>  arch/arm/boot/dts/stm32f429-disco.dts              |   2 +-
>  drivers/gpu/drm/panel/Kconfig                      |  12 +
>  drivers/gpu/drm/panel/Makefile                     |   1 +
>  drivers/gpu/drm/panel/panel-ilitek-ili9341.c       | 792 +++++++++++++++++++++
>  5 files changed, 884 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili9341.yaml
>  create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9341.c
>
> --
> 1.9.1
>