linux-kernel - [PATCH] thinkpad_acpi: unhandled hkey event

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Message-Id: <1422730323-14473-1-git-send-email-xnaveira@gmail.com>
Date:	Sat, 31 Jan 2015 19:52:03 +0100
From:	Xavier Naveira <xnaveira@...il.com>
To:	Henrique de Moraes Holschuh <ibm-acpi@....eng.br>,
	Darren Hart <dvhart@...radead.org>
Cc:	ibm-acpi-devel@...ts.sourceforge.net,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	Xavier Naveira <xnaveira@...il.com>
Subject: [PATCH] thinkpad_acpi: unhandled hkey event

Pressing Fn+Esc in a Lenovo Thinkpad x240 to lock the Fn keys generates
an unhandled hkey event

Signed-off-by: Xavier Naveira <xnaveira@...il.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c3d11fa..e61c43b 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -196,6 +196,7 @@ 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 */
 
 	/* Thermal events */
 	TP_HKEY_EV_ALARM_BAT_HOT	= 0x6011, /* battery too hot */
@@ -3717,6 +3718,12 @@ static bool hotkey_notify_6xxx(const u32 hkey,
 		*send_acpi_ev = false;
 		*ignore_acpi_ev = true;
 		return true;
+	case TP_HKEY_EV_KEY_FN_ESC:
+		/* key press events, we just ignore them as long as the EC
+		 * is still reporting them in the normal keyboard stream */
+		*send_acpi_ev = false;
+		*ignore_acpi_ev = true;
+		return true;
 
 	default:
 		pr_warn("unknown possible thermal alarm or keyboard event received\n");
-- 
2.1.0

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