linux-kernel - Re: [v2,1/1] adv_mix955x is a scheme that multiplexes PCA9554/PCA9555 into LED and GPIO

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Message-ID: <CAHp75Vc_dA_VKMNsUo9jkpuGYX6Mzddy+=P3H+25ZuKiOE5icQ@mail.gmail.com>
Date:   Sun, 2 May 2021 13:48:33 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     yuechao.zhao(赵越超) 
        <yuechao.zhao@...antech.com.cn>
Cc:     "345351830@...com" <345351830@...com>,
        Rainbow.Zhang(張玉) 
        <Rainbow.Zhang@...antech.com.cn>,
        yunxia.li(李云霞) 
        <yunxia.li@...antech.com.cn>,
        Jia.Sui(贾睢) <Jia.Sui@...antech.com.cn>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>
Subject: Re: [v2,1/1] adv_mix955x is a scheme that multiplexes PCA9554/PCA9555
 into LED and GPIO

On Tue, Apr 27, 2021 at 11:33 AM yuechao.zhao(赵越超)
<yuechao.zhao@...antech.com.cn> wrote:
>
> From: Yuechao Zhao <yuechao.zhao@...antech.com.cn>
>
> With this driver, we can multiplex PCA9554/PCA9555 into LED and GPIO based on the ACPI data of BIOS.

I really did no get the purpose of this rather enormous pile of code.
Why you can't simply use PCA9555 with correctly described leds-gpio.
What the problem this driver solves that can't be solved by existing
code?

NAK till it will gain a very good justification.

-- 
With Best Regards,
Andy Shevchenko