linux-kernel - Re: [PATCH v2 1/2] platform/x86: dell-privacy: Add support for Dell hardware privacy

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Date:   Fri, 15 Jan 2021 15:44:14 +0800
From:   Perry Yuan <perry979106@...il.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        Barnabás Pőcze <pobrn@...tonmail.com>,
        Perry Yuan <Perry.Yuan@...l.com>
Cc:     "mgross@...ux.intel.com" <mgross@...ux.intel.com>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Limonciello Mario <Mario.Limonciello@...l.com>
Subject: Re: [PATCH v2 1/2] platform/x86: dell-privacy: Add support for Dell
 hardware privacy

On 2021/1/13 2:37, Hans de Goede wrote:

> Hi,
>
> I know there already is a v3 out and I will try to get around to reviewing
> that soon, still 1 remark about the discussion surrounding v2:
>
> On 1/11/21 2:42 PM, Perry Yuan wrote:
>
> <snip>
>
>>>> *The flow is like this:
>>>> 1) User presses key. HW does stuff with this key (timeout is started)
>>>> 2) Event is emitted from FW
>>>> 3) Event received by dell-privacy
>>>> 4) KEY_MICMUTE emitted from dell-privacy
>>>> 5) Userland picks up key and modifies kcontrol for SW mute
>>>> 6) Codec kernel driver catches and calls ledtrig_audio_set, like this:
>>>> 	ledtrig_audio_set(LED_AUDIO_MICMUTE,
>>>> 		rt715->micmute_led ? LED_ON :LED_OFF);
>>>> 7) If "LED" is set to on dell-privacy notifies ec,
>>>>    and timeout is cancelled,HW mic mute activated.
>>>>
>>> Please proofread the commit message again, and pay attention to capitalization
>>> and spacing.
>> I want to reformat it and move the commit info to cover letter.
> Please also put a copy of this as a comment in either the wmi or the
> acpi driver (with a comment pointing to the comment in the other) this is
> important info to have for someone reading the code and trying to understand
> how this all fits together.
>
> Regards,
>
> Hans

Hi Hans:

Agreed.

I will add this to the driver comments and explain how the acpi/wmi 
driver associated.