linux-kernel - [PATCH 1/3] Input: allocate keycodes for notification-center, pickup-phone and hangup-phone

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Date:   Fri, 17 Jul 2020 13:41:53 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Henrique de Moraes Holschuh <ibm-acpi@....eng.br>
Cc:     Hans de Goede <hdegoede@...hat.com>, linux-input@...r.kernel.org,
        Marco Trevisan <marco.trevisan@...onical.com>,
        Mark Pearson <mpearson@...ovo.com>,
        Christian Kellner <ckellner@...hat.com>,
        Benjamin Berg <bberg@...hat.com>,
        ibm-acpi-devel@...ts.sourceforge.net,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] Input: allocate keycodes for notification-center, pickup-phone and hangup-phone

New Lenovo Thinkpad models, e.g. the X1 Carbon 8th gen and the new T14 gen1
models have 3 new symbols / shortcuts on their F9-F11 keys (and the
thinkpad_acpi driver receives 3 new "scancodes" for these):

F9:  Has a symbol resembling a rectangular speech baloon, the manual says
     the hotkey functions shows or hides the notification center
F10: Has a symbol of a telephone horn which has been picked up from the
     receiver, the manual says: "Answer incoming calls"
F11: Has a symbol of a telephone horn which is resting on the receiver,
     the manual says: "Decline incoming calls"

We have no existing keycodes which are a good match for these, so
add 3 new keycodes for these.

I noticed that we have a hole in our keycodes between 0x1ba and 0x1c0
which does not seem to be reserved for any specific purpose, so these
new 3 codes use 0x1bc - 0x1be, instead of starting at 0x27b.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 include/uapi/linux/input-event-codes.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index b6a835d37826..8d605a6df502 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -515,6 +515,9 @@
 #define KEY_10CHANNELSUP	0x1b8	/* 10 channels up (10+) */
 #define KEY_10CHANNELSDOWN	0x1b9	/* 10 channels down (10-) */
 #define KEY_IMAGES		0x1ba	/* AL Image Browser */
+#define KEY_NOTIFICATION_CENTER	0x1bc	/* Show/hide the notification center */
+#define KEY_PICKUP_PHONE	0x1bd	/* Answer incoming call */
+#define KEY_HANGUP_PHONE	0x1be	/* Decline incoming call */
 
 #define KEY_DEL_EOL		0x1c0
 #define KEY_DEL_EOS		0x1c1
-- 
2.26.2