linux-kernel - [PATCH AUTOSEL 5.19 15/38] HID: Add Apple Touchbar on T2 Macs in hid_have_special

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Message-Id: <20220910211623.69825-15-sashal@kernel.org>
Date:   Sat, 10 Sep 2022 17:16:00 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Aditya Garg <gargaditya08@...e.com>, Jiri Kosina <jkosina@...e.cz>,
        Sasha Levin <sashal@...nel.org>, jikos@...nel.org,
        benjamin.tissoires@...hat.com, linux-input@...r.kernel.org
Subject: [PATCH AUTOSEL 5.19 15/38] HID: Add Apple Touchbar on T2 Macs in hid_have_special_driver list

From: Aditya Garg <gargaditya08@...e.com>

[ Upstream commit 750ec977288d96e9a11424e3507ede097af732c4 ]

The touchbar on Apple T2 Macs has 2 modes, one that shows the function
keys and other that shows the media controls. The user can use the fn
key on his keyboard to switch between the 2 modes.

On Linux, if people were using an external keyboard or mouse, the
touchbar failed to change modes on pressing the fn key with the following
in dmesg :-

[   10.661445] apple-ib-als 0003:05AC:8262.0001: : USB HID v1.01 Device [Apple Inc. Ambient Light Sensor] on usb-bce-vhci-3/input0
[   11.830992] apple-ib-touchbar 0003:05AC:8302.0007: input: USB HID v1.01 Keyboard [Apple Inc. Touch Bar Display] on usb-bce-vhci-6/input0
[   12.139407] apple-ib-touchbar 0003:05AC:8102.0008: : USB HID v1.01 Device [Apple Inc. Touch Bar Backlight] on usb-bce-vhci-7/input0
[   12.211824] apple-ib-touchbar 0003:05AC:8102.0009: : USB HID v1.01 Device [Apple Inc. Touch Bar Backlight] on usb-bce-vhci-7/input1
[   14.219759] apple-ib-touchbar 0003:05AC:8302.0007: tb: Failed to set touch bar mode to 2 (-110)
[   24.395670] apple-ib-touchbar 0003:05AC:8302.0007: tb: Failed to set touch bar mode to 2 (-110)
[   34.635791] apple-ib-touchbar 0003:05AC:8302.0007: tb: Failed to set touch bar mode to 2 (-110)
[  269.579233] apple-ib-touchbar 0003:05AC:8302.0007: tb: Failed to set touch bar mode to 1 (-110)

Add the USB IDs of the touchbar found in T2 Macs to HID have special
driver list to fix the issue.

Signed-off-by: Aditya Garg <gargaditya08@...e.com>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hid/hid-ids.h    | 2 ++
 drivers/hid/hid-quirks.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index f7e4a0d06fb85..bc550e884f37b 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -185,6 +185,8 @@
 #define USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_2021   0x029c
 #define USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_FINGERPRINT_2021   0x029a
 #define USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_2021   0x029f
+#define USB_DEVICE_ID_APPLE_TOUCHBAR_BACKLIGHT 0x8102
+#define USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY 0x8302
 
 #define USB_VENDOR_ID_ASUS		0x0486
 #define USB_DEVICE_ID_ASUS_T91MT	0x0185
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index dc67717d2dabc..70f602c64fd13 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -314,6 +314,8 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_2021) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_FINGERPRINT_2021) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_BACKLIGHT) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_TOUCHBAR_DISPLAY) },
 #endif
 #if IS_ENABLED(CONFIG_HID_APPLEIR)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
-- 
2.35.1