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[v2,2/3] HID: apple: Magic Keyboard first generation FN key mapping

Message ID 20220208183704.40101-3-jose.exposito89@gmail.com
State Accepted
Commit 0fea6fe7d5ef1b5fa5f78048d4729f85181c04ca
Headers show
Series Magic Keyboard first generation and 2015 FN key mapping | expand

Commit Message

José Expósito Feb. 8, 2022, 6:37 p.m. UTC 
The function key mapping for the Magic Keyboard first generation (2007,
2009 and 2011 aluminum wireless models) was not present and the default
one was used instead.

This caused two main issues:

 - The F5 and F6 keys were sending KEY_KBDILLUMDOWN and KEY_KBDILLUMUP;
   however, the keyboard is not backlited.

 - The keyboard has the APPLE_NUMLOCK_EMULATION quirk with F6 set as
   the KEY_NUMLOCK key by "powerbook_numlock_keys". However, because F6
   was mapped to KEY_KBDILLUMUP by the default mapping it was not
   possible to switch the numlock status.
   This means that, if numlock was enabled on session startup, it was
   not possible to disable it without connecting another keyboard.

Add a custom translation table for the device leaving F5 unassigned and
using F6 as the KEY_NUMLOCK key.

Signed-off-by: José Expósito <jose.exposito89@gmail.com>
---
 drivers/hid/hid-apple.c | 38 +++++++++++++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index 6ca393c0a390..c140146e2370 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -76,6 +76,27 @@  struct apple_key_translation {
 	u8 flags;
 };
 
+static const struct apple_key_translation magic_keyboard_alu_fn_keys[] = {
+	{ KEY_BACKSPACE, KEY_DELETE },
+	{ KEY_ENTER,	KEY_INSERT },
+	{ KEY_F1,	KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
+	{ KEY_F2,	KEY_BRIGHTNESSUP,   APPLE_FLAG_FKEY },
+	{ KEY_F3,	KEY_SCALE,          APPLE_FLAG_FKEY },
+	{ KEY_F4,	KEY_DASHBOARD,      APPLE_FLAG_FKEY },
+	{ KEY_F6,	KEY_NUMLOCK,        APPLE_FLAG_FKEY },
+	{ KEY_F7,	KEY_PREVIOUSSONG,   APPLE_FLAG_FKEY },
+	{ KEY_F8,	KEY_PLAYPAUSE,      APPLE_FLAG_FKEY },
+	{ KEY_F9,	KEY_NEXTSONG,       APPLE_FLAG_FKEY },
+	{ KEY_F10,	KEY_MUTE,           APPLE_FLAG_FKEY },
+	{ KEY_F11,	KEY_VOLUMEDOWN,     APPLE_FLAG_FKEY },
+	{ KEY_F12,	KEY_VOLUMEUP,       APPLE_FLAG_FKEY },
+	{ KEY_UP,	KEY_PAGEUP },
+	{ KEY_DOWN,	KEY_PAGEDOWN },
+	{ KEY_LEFT,	KEY_HOME },
+	{ KEY_RIGHT,	KEY_END },
+	{ }
+};
+
 static const struct apple_key_translation apple2021_fn_keys[] = {
 	{ KEY_BACKSPACE, KEY_DELETE },
 	{ KEY_ENTER,	KEY_INSERT },
@@ -251,9 +272,19 @@  static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
 	}
 
 	if (fnmode) {
-		if (hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_2021 ||
-		    hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_FINGERPRINT_2021 ||
-		    hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_2021)
+		if (hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO ||
+		    hid->product == USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS)
+			table = magic_keyboard_alu_fn_keys;
+		else if (hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_2021 ||
+			 hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_FINGERPRINT_2021 ||
+			 hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_2021)
 			table = apple2021_fn_keys;
 		else if (hid->product >= USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI &&
 				hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS)
@@ -468,6 +499,7 @@  static void apple_setup_input(struct input_dev *input)
 	apple_setup_key_translation(input, powerbook_fn_keys);
 	apple_setup_key_translation(input, powerbook_numlock_keys);
 	apple_setup_key_translation(input, apple_iso_keyboard);
+	apple_setup_key_translation(input, magic_keyboard_alu_fn_keys);
 	apple_setup_key_translation(input, apple2021_fn_keys);
 
 	if (swap_fn_leftctrl)