linux-kernel - Re: [PATCH v2] platform/x86: dell-wmi: Ignore new rfkill and fn-lock events

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Date:   Fri, 20 Apr 2018 09:28:54 +0200
From:   Pali Rohár <pali.rohar@...il.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     mjg59@...f.ucam.org, dvhart@...radead.org, andy@...radead.org,
        mario.limonciello@...l.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] platform/x86: dell-wmi: Ignore new rfkill and fn-lock
 events

On Friday 20 April 2018 15:26:48 Kai-Heng Feng wrote:
> There are two new events generated by dell-wmi, rfkill and fn-lock, from
> Dell Systems.
> 
> When Fn-lock hotkey gets pressed to switch to function mode:
> [85951.591542] dell_wmi: Unknown key with type 0x0010 and code 0xe035
> pressed
> [85951.591546] dell_wmi: Unknown key with type 0x0010 and code 0x0000
> pressed
> 
> When Fn-lock hotkey gets pressed to switch to multimedia mode:
> [85956.667686] dell_wmi: Unknown key with type 0x0010 and code 0xe035
> pressed
> [85956.667690] dell_wmi: Unknown key with type 0x0010 and code 0x0001
> pressed
> 
> When radio hotkey gets pressed:
> [85974.430220] dell_wmi: Unknown key with type 0x0010 and code 0xe008
> pressed
> 
> These events are for notification purpose, so we can ignore them.
> 
> This patch is tested on XPS 9370.
> 
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>

Reviewed-by: Pali Rohár <pali.rohar@...il.com>

> ---
> v2: Reorder alphabetically.
>     More detailed changelog.
> 
>  drivers/platform/x86/dell-wmi.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
> index 8d102195a392..ba8e6725d7ac 100644
> --- a/drivers/platform/x86/dell-wmi.c
> +++ b/drivers/platform/x86/dell-wmi.c
> @@ -261,6 +261,12 @@ static const u16 bios_to_linux_keycode[256] = {
>   * override them.
>   */
>  static const struct key_entry dell_wmi_keymap_type_0010[] = {
> +	/* Fn-lock switched to function keys */
> +	{ KE_IGNORE, 0x0, { KEY_RESERVED } },
> +
> +	/* Fn-lock switched to multimedia keys */
> +	{ KE_IGNORE, 0x1, { KEY_RESERVED } },
> +
>  	/* Mic mute */
>  	{ KE_KEY, 0x150, { KEY_MICMUTE } },
>  
> @@ -296,6 +302,14 @@ static const struct key_entry dell_wmi_keymap_type_0010[] = {
>  	{ KE_KEY,    0x851, { KEY_PROG2 } },
>  	{ KE_KEY,    0x852, { KEY_PROG3 } },
>  
> +	/*
> +	 * Radio disable (notify only -- there is no model for which the
> +	 * WMI event is supposed to trigger an action).
> +	 */
> +	{ KE_IGNORE, 0xe008, { KEY_RFKILL } },
> +
> +	/* Fn-lock */
> +	{ KE_IGNORE, 0xe035, { KEY_RESERVED } },
>  };
>  
>  /*

-- 
Pali Rohár
pali.rohar@...il.com