[PATCH 1/2] HID: logitech-dj: Add support for new lightspeed receiver iteration

[Mavroudis Chatzilazaridis <mavchatz@protonmail.com>]

The lightspeed receiver for the Pro X Superlight uses 13 byte mouse reports
without a report id. The workaround for such cases has been adjusted to
handle these larger packets.

libratbag recognizes the device and input events are passing through.

https://github.com/libratbag/libratbag/pull/1122

Co-developed-by: Filipe Laíns <lains@riseup.net>
Signed-off-by: Filipe Laíns <lains@riseup.net>
Signed-off-by: Mavroudis Chatzilazaridis <mavchatz@protonmail.com>
---
 drivers/hid/hid-ids.h         |  1 +
 drivers/hid/hid-logitech-dj.c | 11 ++++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 9e36b4cd905e..030524ed4548 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -848,6 +848,7 @@
 #define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_2		0xc534
 #define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1	0xc539
 #define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_1	0xc53f
+#define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_2	0xc547
 #define USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_POWERPLAY	0xc53a
 #define USB_DEVICE_ID_SPACETRAVELLER	0xc623
 #define USB_DEVICE_ID_SPACENAVIGATOR	0xc626
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index c358778e070b..82fe64ef4dbe 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -1692,11 +1692,12 @@ static int logi_dj_raw_event(struct hid_device *hdev,
 		}
 		/*
 		 * Mouse-only receivers send unnumbered mouse data. The 27 MHz
-		 * receiver uses 6 byte packets, the nano receiver 8 bytes.
+		 * receiver uses 6 byte packets, the nano receiver 8 bytes,
+		 * the lightspeed receiver (Pro X Superlight) 13 bytes.
 		 */
 		if (djrcv_dev->unnumbered_application == HID_GD_MOUSE &&
-		    size <= 8) {
-			u8 mouse_report[9];
+		    size <= 13){
+			u8 mouse_report[14];

 			/* Prepend report id */
 			mouse_report[0] = REPORT_TYPE_MOUSE;
@@ -1980,6 +1981,10 @@ static const struct hid_device_id logi_dj_receivers[] = {
 	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
 		USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_1),
 	 .driver_data = recvr_type_gaming_hidpp},
+	{ /* Logitech lightspeed receiver (0xc547) */
+	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
+		USB_DEVICE_ID_LOGITECH_NANO_RECEIVER_LIGHTSPEED_1_2),
+	 .driver_data = recvr_type_gaming_hidpp},

 	{ /* Logitech 27 MHz HID++ 1.0 receiver (0xc513) */
 	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER),
--
2.34.1