linux-kernel - Re: [PATCH v7 0/9] backlight: gpio: simplify the driver

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Date:   Tue, 22 Oct 2019 11:29:54 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jacopo Mondi <jacopo@...ndi.org>
Cc:     Linux-sh list <linux-sh@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v7 0/9] backlight: gpio: simplify the driver

wt., 22 paź 2019 o 10:36 Bartosz Golaszewski <brgl@...ev.pl> napisał(a):
>
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
>
> While working on my other series related to gpio-backlight[1] I noticed
> that we could simplify the driver if we made the only user of platform
> data use GPIO lookups and device properties. This series tries to do
> that.
>
> First two patches contain minor fixes. Third patch makes the driver
> explicitly drive the GPIO line. Fourth patch adds all necessary data
> structures to ecovec24. Patch 5/9 unifies much of the code for both
> pdata and non-pdata cases. Patches 6-7/9 remove unused platform data
> fields. Last two patches contain additional improvements for the GPIO
> backlight driver while we're already modifying it.
>
> I don't have access to this HW but hopefully this works. Only compile
> tested.
>
> [1] https://lkml.org/lkml/2019/6/25/900
>
> v1 -> v2:
> - rebased on top of v5.3-rc1 and adjusted to the recent changes from Andy
> - added additional two patches with minor improvements
>
> v2 -> v3:
> - in patch 7/7: used initializers to set values for pdata and dev local vars
>
> v3 -> v4:
> - rebased on top of v5.4-rc1
> - removed changes that are no longer relevant after commit ec665b756e6f
>   ("backlight: gpio-backlight: Correct initial power state handling")
> - added patch 7/7
>
> v4 -> v5:
> - in patch 7/7: added a comment replacing the name of the function being
>   pulled into probe()
>
> v5 -> v6:
> - added a patch making the driver explicitly set the direction of the GPIO
>   to output
> - added a patch removing a redundant newline
>
> v6 -> v7:
> - renamed the function calculating the new GPIO value for status update
> - collected more tags
>
> Bartosz Golaszewski (9):
>   backlight: gpio: remove unneeded include
>   backlight: gpio: remove stray newline
>   backlight: gpio: explicitly set the direction of the GPIO
>   sh: ecovec24: add additional properties to the backlight device
>   backlight: gpio: simplify the platform data handling
>   sh: ecovec24: don't set unused fields in platform data
>   backlight: gpio: remove unused fields from platform data
>   backlight: gpio: use a helper variable for &pdev->dev
>   backlight: gpio: pull gpio_backlight_initial_power_state() into probe
>
>  arch/sh/boards/mach-ecovec24/setup.c         |  33 +++--
>  drivers/video/backlight/gpio_backlight.c     | 128 +++++++------------
>  include/linux/platform_data/gpio_backlight.h |   3 -
>  3 files changed, 69 insertions(+), 95 deletions(-)
>
> --
> 2.23.0
>

Lee, Daniel, Jingoo,

Jacopo is travelling until November 1st and won't be able to test this
again before this date. Do you think you can pick it up and in case
anything's broken on SH, we can fix it after v5.5-rc1, so that it
doesn't miss another merge window?

Bart