[PATCH] thinkpad_acpi: Add TP_HKEY_EV_SCREEN_FLIP (0x60c0) for Lenovo ThinkPad Yoga 12

[Darren Hart]

From: Darren Hart <dvhart@xxxxxxxxxxxxx>

thinkpad_acpi reports "unhandled HKEY event 0x60c0" when switching
between laptop and tent/tablet mode on the ThinkPad Yoga 12. This key is
reported by atkbd serio0 as e058 and e059.

Add TP_HKEY_EV_SCREEN_FLIP to the list of ignored events and silence the
warning.

Cleanup whitespace on preceeding line for TP_HKEY_EV_KEY_FN_ESC.

Signed-off-by: Darren Hart <dvhart@xxxxxxxxxxxxx>
Cc: Henrique de Moraes Holschuh <ibm-acpi@xxxxxxxxxx>
Cc: ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
---
 drivers/platform/x86/thinkpad_acpi.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 131dd74..d68143e 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -197,7 +197,8 @@ enum tpacpi_hkey_event_t {
 	/* Key-related user-interface events */
 	TP_HKEY_EV_KEY_NUMLOCK		= 0x6000, /* NumLock key pressed */
 	TP_HKEY_EV_KEY_FN		= 0x6005, /* Fn key pressed? E420 */
-	TP_HKEY_EV_KEY_FN_ESC           = 0x6060, /* Fn+Esc key pressed X240 */
+	TP_HKEY_EV_KEY_FN_ESC		= 0x6060, /* Fn+Esc key pressed X240 */
+	TP_HKEY_EV_SCREEN_FLIP		= 0x60c0, /* Screen flipped Yoga 12 */
 
 	/* Thermal events */
 	TP_HKEY_EV_ALARM_BAT_HOT	= 0x6011, /* battery too hot */
@@ -3849,7 +3850,9 @@ static bool hotkey_notify_6xxx(const u32 hkey,
 		 * unplugging AC adapter, docking or undocking. */
 
 		/* fallthrough */
-
+	case TP_HKEY_EV_SCREEN_FLIP:
+		/* Yoga 12: Screen toggled between laptop and tablet mode. */
+		/* fallthrough */
 	case TP_HKEY_EV_KEY_NUMLOCK:
 	case TP_HKEY_EV_KEY_FN:
 	case TP_HKEY_EV_KEY_FN_ESC:
-- 
2.1.4

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