HID: add device IDs for Apple SPI HID devices

Apple Silicon based laptop use SPI as transport for HID. Add support for
SPI-based HID devices and and Apple keyboard and trackpad devices.
Intel based laptops using the keyboard input driver applespi use the
same HID over SPI protocol and can be supported later.

This requires SPI keyboard/mouse HID types since Apple's intenal
keyboards/trackpads use the same product id.

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

drivers/hid/hid-core.c

@@ -2289,6 +2289,9 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
 	case BUS_I2C:
 		bus = "I2C";
 		break;
+	case BUS_SPI:
+		bus = "SPI";
+		break;
 	case BUS_VIRTUAL:
 		bus = "VIRTUAL";
 		break;

drivers/hid/hid-ids.h

@@ -89,6 +89,7 @@
 
 #define USB_VENDOR_ID_APPLE		0x05ac
 #define BT_VENDOR_ID_APPLE		0x004c
+#define SPI_VENDOR_ID_APPLE		0x05ac
 #define USB_DEVICE_ID_APPLE_MIGHTYMOUSE	0x0304
 #define USB_DEVICE_ID_APPLE_MAGICMOUSE	0x030d
 #define USB_DEVICE_ID_APPLE_MAGICMOUSE2	0x0269
@@ -188,6 +189,10 @@
 #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 SPI_DEVICE_ID_APPLE_MACBOOK_AIR_2020	0x0281
+#define SPI_DEVICE_ID_APPLE_MACBOOK_PRO13_2020	0x0341
+#define SPI_DEVICE_ID_APPLE_MACBOOK_PRO14_2021	0x0342
+#define SPI_DEVICE_ID_APPLE_MACBOOK_PRO16_2021	0x0343
 
 #define USB_VENDOR_ID_ASUS		0x0486
 #define USB_DEVICE_ID_ASUS_T91MT	0x0185

include/linux/hid.h

@@ -589,7 +589,9 @@ struct hid_input {
 enum hid_type {
 	HID_TYPE_OTHER = 0,
 	HID_TYPE_USBMOUSE,
-	HID_TYPE_USBNONE
+	HID_TYPE_USBNONE,
+	HID_TYPE_SPI_KEYBOARD,
+	HID_TYPE_SPI_MOUSE,
 };
 
 enum hid_battery_status {
@@ -747,6 +749,8 @@ struct hid_descriptor {
 	.bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)
 #define HID_I2C_DEVICE(ven, prod)				\
 	.bus = BUS_I2C, .vendor = (ven), .product = (prod)
+#define HID_SPI_DEVICE(ven, prod)				\
+	.bus = BUS_SPI, .vendor = (ven), .product = (prod)
 
 #define HID_REPORT_ID(rep) \
 	.report_type = (rep)