linux-kernel - Re: [RFT PATCH 0/4] platform/x86: int3472: don't use gpiod_toggle_active

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Date:   Wed, 27 Sep 2023 10:38:05 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Daniel Scally <djrscally@...il.com>,
        Mark Gross <markgross@...nel.org>
Cc:     linux-gpio@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [RFT PATCH 0/4] platform/x86: int3472: don't use
 gpiod_toggle_active_low()

Hi Bartosz,

On 9/26/23 16:59, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> gpiod_toggle_active_low() is a badly designed API that should have never
> been used elsewhere then in the MMC code. And even there we should find
> a better solution.
> 
> Replace the uses of it in the int3472 driver with the good old temporary
> lookup table trick. This is not very pretty either but it's the lesser
> evil.

I saw your previous proposal which added a new api to directly set
the active_low flag, rather then toggle it.

I intended to reply to that thread to say that I liked that approach,
but I don't remember if I actually did reply.

I wonder what made you abandon the new function to directly set
the active-low flag on a gpio_desc?

For the int3472 code that would work pretty well and it would
be much cleaner then the temp gpio-lookup approach.

Regards,

Hans



> 
> Bartosz Golaszewski (4):
>   platform/x86: int3472: provide a helper for getting GPIOs from lookups
>   platform/x86: int3472: led: don't use gpiod_toggle_active_low()
>   platform/x86: int3472: clk_and_regulator: use GPIO lookup tables
>   gpio: acpi: remove acpi_get_and_request_gpiod()
> 
>  drivers/gpio/gpiolib-acpi.c                   | 28 ------------------
>  .../x86/intel/int3472/clk_and_regulator.c     | 22 ++++++--------
>  drivers/platform/x86/intel/int3472/common.c   | 29 +++++++++++++++++++
>  drivers/platform/x86/intel/int3472/common.h   |  9 ++++++
>  drivers/platform/x86/intel/int3472/led.c      | 12 +++-----
>  include/linux/gpio/consumer.h                 |  8 -----
>  6 files changed, 51 insertions(+), 57 deletions(-)
>