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

[Mark Pearson]

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@xxxxxxxxx>
Signed-off-by: Nitin Joshi <njoshi1@xxxxxxxxxx>
---
 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 */
 		},
 	};
 
-- 
2.44.0