[PATCH v3 3/3] HID: apple: Add fn mapping for MacBook Pros with Touch Bar

From: Aditya Garg
Date: Thu Feb 03 2022 - 07:23:10 EST


From: Aditya Garg <gargaditya08@xxxxxxxx>

This patch adds the Fn mapping for keyboards on certain T2 Macs.

Signed-off-by: Aditya Garg <gargaditya08@xxxxxxxx>
---
v2 :- Use better approach to map fn keys
v3 :- Use BIT(10) for APPLE_BACKLIGHT_CTL since 0x0200 (BIT (9)) has been used.
drivers/hid/hid-apple.c | 62 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index 658d79375..5448e5a66 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -142,6 +142,51 @@ static const struct apple_key_translation macbookair_fn_keys[] = {
{ }
};

+static const struct apple_key_translation macbookpro_no_esc_fn_keys[] = {
+ { KEY_BACKSPACE, KEY_DELETE },
+ { KEY_ENTER, KEY_INSERT },
+ { KEY_GRAVE, KEY_ESC },
+ { KEY_1, KEY_F1 },
+ { KEY_2, KEY_F2 },
+ { KEY_3, KEY_F3 },
+ { KEY_4, KEY_F4 },
+ { KEY_5, KEY_F5 },
+ { KEY_6, KEY_F6 },
+ { KEY_7, KEY_F7 },
+ { KEY_8, KEY_F8 },
+ { KEY_9, KEY_F9 },
+ { KEY_0, KEY_F10 },
+ { KEY_MINUS, KEY_F11 },
+ { KEY_EQUAL, KEY_F12 },
+ { KEY_UP, KEY_PAGEUP },
+ { KEY_DOWN, KEY_PAGEDOWN },
+ { KEY_LEFT, KEY_HOME },
+ { KEY_RIGHT, KEY_END },
+ { }
+};
+
+static const struct apple_key_translation macbookpro_dedicated_esc_fn_keys[] = {
+ { KEY_BACKSPACE, KEY_DELETE },
+ { KEY_ENTER, KEY_INSERT },
+ { KEY_1, KEY_F1 },
+ { KEY_2, KEY_F2 },
+ { KEY_3, KEY_F3 },
+ { KEY_4, KEY_F4 },
+ { KEY_5, KEY_F5 },
+ { KEY_6, KEY_F6 },
+ { KEY_7, KEY_F7 },
+ { KEY_8, KEY_F8 },
+ { KEY_9, KEY_F9 },
+ { KEY_0, KEY_F10 },
+ { KEY_MINUS, KEY_F11 },
+ { KEY_EQUAL, KEY_F12 },
+ { KEY_UP, KEY_PAGEUP },
+ { KEY_DOWN, KEY_PAGEDOWN },
+ { KEY_LEFT, KEY_HOME },
+ { KEY_RIGHT, KEY_END },
+ { }
+};
+
static const struct apple_key_translation apple_fn_keys[] = {
{ KEY_BACKSPACE, KEY_DELETE },
{ KEY_ENTER, KEY_INSERT },
@@ -269,6 +314,17 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
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_WELLSPRINGT2_J132 ||
+ hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J680 ||
+ hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J213)
+ table = macbookpro_no_esc_fn_keys;
+ else if (hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J214K ||
+ hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J223 ||
+ hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J152F)
+ table = macbookpro_dedicated_esc_fn_keys;
+ else if (hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J140K ||
+ hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J230K)
+ table = apple_fn_keys;
else if (hid->product >= USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI &&
hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS)
table = macbookair_fn_keys;
@@ -480,6 +536,12 @@ static void apple_setup_input(struct input_dev *input)
set_bit(KEY_NUMLOCK, input->keybit);

/* Enable all needed keys */
+ for (trans = macbookpro_no_esc_fn_keys; trans->from; trans++)
+ set_bit(trans->to, input->keybit);
+
+ for (trans = macbookpro_dedicated_esc_fn_keys; trans->from; trans++)
+ set_bit(trans->to, input->keybit);
+
for (trans = apple_fn_keys; trans->from; trans++)
set_bit(trans->to, input->keybit);

--
2.25.1