linux-kernel - Re: [PATCH 3/4] platform/x86: thinkpad_acpi: Support for system debug info hotkey

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Date: Mon, 8 Apr 2024 15:11:39 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Mark Pearson <mpearson-lenovo@...ebb.ca>
Cc: ilpo.jarvinen@...ux.intel.com, hmh@....eng.br, dmitry.torokhov@...il.com,
 ibm-acpi-devel@...ts.sourceforge.net, platform-driver-x86@...r.kernel.org,
 linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
 njoshi1@...ovo.com, vsankar@...ovo.com, peter.hutterer@...hat.com
Subject: Re: [PATCH 3/4] platform/x86: thinkpad_acpi: Support for system debug
 info hotkey

Hi,

On 3/24/24 10:08 PM, Mark Pearson wrote:
> New Lenovo platforms are adding the FN+N key to generate system debug
> details that support can use for collecting important details on any
> customer cases for Windows.
> Add the infrastructure so we can do the same on Linux by generating a
> SYS_DEBUG_INFO keycode to userspace.
> 
> Signed-off-by: Mark Pearson <mpearson-lenovo@...ebb.ca>
> Signed-off-by: Nitin Joshi <njoshi1@...ovo.com>
> ---
>  drivers/platform/x86/thinkpad_acpi.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index 2bbb32c898e9..854ce971bde2 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -1787,6 +1787,7 @@ enum {	/* hot key scan codes (derived from ACPI DSDT) */
>  	TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER,
>  	TP_ACPI_HOTKEYSCAN_PICKUP_PHONE,
>  	TP_ACPI_HOTKEYSCAN_HANGUP_PHONE,
> +	TP_ACPI_HOTKEYSCAN_SYS_DEBUG_INFO = 81,
>  
>  	/* Hotkey keymap size */
>  	TPACPI_HOTKEY_MAP_LEN
> @@ -3337,6 +3338,9 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
>  		KEY_NOTIFICATION_CENTER,	/* Notification Center */
>  		KEY_PICKUP_PHONE,		/* Answer incoming call */
>  		KEY_HANGUP_PHONE,		/* Decline incoming call */
> +		KEY_UNKNOWN,			/* AMT Toggle (event), 0x31A */
> +		KEY_UNKNOWN, KEY_UNKNOWN,
> +		KEY_SYS_DEBUG_INFO,             /* System debug info, 0x31D */
>  		},
>  	};
>  

Looking at the next patch 0x131c is TP_HKEY_EV_DOUBLETAP_TOGGLE and 0x131a is
TP_HKEY_EV_AMT_TOGGLE based on this please change this to:

  		KEY_NOTIFICATION_CENTER,	/* Notification Center */
  		KEY_PICKUP_PHONE,		/* Answer incoming call */
  		KEY_HANGUP_PHONE,		/* Decline incoming call */
		KEY_UNKNOWN,			/* TP_HKEY_EV_AMT_TOGGLE handled in driver, 0x31a */
		KEY_UNKNOWN,			/* ?, 0X31b */
		KEY_UNKNOWN,			/* TP_HKEY_EV_DOUBLETAP_TOGGLE handled in driver, 0x31c */
		KEY_SYS_DEBUG_INFO,             /* System debug info, 0x31d */
		},

Regards,

Hans