HID: logitech-dj: declare and use a few HID++ 1.0 constants

For the non DJ receivers, we are going to need to re-use those constants,
better have them properly defined.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/hid-logitech-dj.c

@@ -74,7 +74,6 @@
 /* Device Un-Paired Notification */
 #define REPORT_TYPE_NOTIF_DEVICE_UNPAIRED	0x40
 
-
 /* Connection Status Notification */
 #define REPORT_TYPE_NOTIF_CONNECTION_STATUS	0x42
 #define CONNECTION_STATUS_PARAM_STATUS		0x00
@@ -101,6 +100,10 @@
 #define MEDIA_CENTER				BIT(8)
 #define KBD_LEDS				BIT(14)
 
+#define HIDPP_GET_LONG_REGISTER			0x83
+#define HIDPP_REG_PAIRING_INFORMATION		0xB5
+#define HIDPP_PAIRING_INFORMATION		0x20
+
 struct dj_report {
 	u8 report_id;
 	u8 device_index;
@@ -703,8 +706,14 @@ static void logi_dj_ll_close(struct hid_device *hid)
  * Register 0xB5 is "pairing information". It is solely intended for the
  * receiver, so do not overwrite the device index.
  */
-static u8 unifying_pairing_query[]  = {0x10, 0xff, 0x83, 0xb5};
-static u8 unifying_pairing_answer[] = {0x11, 0xff, 0x83, 0xb5};
+static u8 unifying_pairing_query[]  = { REPORT_ID_HIDPP_SHORT,
+					HIDPP_RECEIVER_INDEX,
+					HIDPP_GET_LONG_REGISTER,
+					HIDPP_REG_PAIRING_INFORMATION };
+static u8 unifying_pairing_answer[] = { REPORT_ID_HIDPP_LONG,
+					HIDPP_RECEIVER_INDEX,
+					HIDPP_GET_LONG_REGISTER,
+					HIDPP_REG_PAIRING_INFORMATION };
 
 static int logi_dj_ll_raw_request(struct hid_device *hid,
 				  unsigned char reportnum, __u8 *buf,