linux-kernel - Re: [PATCH v5 1/2] platform/x86: dell-privacy: Add support for Dell hardware privacy

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Date:   Mon, 22 Mar 2021 10:15:07 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Perry Yuan <Perry.Yuan@...l.com>, pobrn@...tonmail.com,
        pierre-louis.bossart@...ux.intel.com, oder_chiou@...ltek.com,
        perex@...ex.cz, tiwai@...e.com, hdegoede@...hat.com,
        mgross@...ux.intel.com, Mario.Limonciello@...l.com
Cc:     lgirdwood@...il.com, broonie@...nel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v5 1/2] platform/x86: dell-privacy: Add support for Dell
 hardware privacy

On 3/22/21 2:38 AM, Perry Yuan wrote:
> From: Perry Yuan <perry_yuan@...l.com>
> 

> diff --git a/drivers/platform/x86/dell/Kconfig b/drivers/platform/x86/dell/Kconfig
> index e0a55337f51a..0e0f1eb35bd6 100644
> --- a/drivers/platform/x86/dell/Kconfig
> +++ b/drivers/platform/x86/dell/Kconfig
> @@ -204,4 +204,20 @@ config DELL_WMI_SYSMAN
>  	  To compile this driver as a module, choose M here: the module will
>  	  be called dell-wmi-sysman.
>  
> +config DELL_PRIVACY
> +	tristate "Dell Hardware Privacy Support"
> +	depends on ACPI
> +	depends on ACPI_WMI
> +	depends on INPUT
> +	depends on DELL_LAPTOP
> +	depends on LEDS_TRIGGER_AUDIO
> +	select DELL_WMI
> +	help
> +	  This driver provides support for the "Dell Hardware Privacy" feature
> +	  of Dell laptops.
> +	  Support for a micmute and camera mute privacy will be provided as

better:
	                                                are provided as

> +	  hardware button Ctrl+F4 and Ctrl+F9 hotkey.

Does that say that Ctrl+F4 is a hardware button
and that Ctrl+F9 is a hotkey?
If so, what's the difference? and why?  Are they different
hardware implementations?  Does the user care?

> +
> +	  To compile this driver as a module, choose M here: the module will
> +	  be called dell_privacy.
>  endif # X86_PLATFORM_DRIVERS_DELL
thanks.
-- 
~Randy