Return USB HID GET_REPORT requests (#14814)

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

tmk_core/protocol/chibios/usb_main.c

@@ -76,12 +76,24 @@ static void keyboard_idle_timer_cb(void *arg);
 #endif
 
 report_keyboard_t keyboard_report_sent = {{0}};
-#ifdef MOUSE_ENABLE
-report_mouse_t mouse_report_blank = {0};
-#endif /* MOUSE_ENABLE */
+report_mouse_t mouse_report_sent = {0};
+
+union {
+    uint8_t report_id;
+    report_keyboard_t keyboard;
 #ifdef EXTRAKEY_ENABLE
-uint8_t extra_report_blank[3] = {0};
-#endif /* EXTRAKEY_ENABLE */
+    report_extra_t extra;
+#endif
+#ifdef MOUSE_ENABLE
+    report_mouse_t mouse;
+#endif
+#ifdef DIGITIZER_ENABLE
+    report_digitizer_t digitizer;
+#endif
+#ifdef JOYSTICK_ENABLE
+    joystick_report_t joystick;
+#endif
+} universal_report_blank = {0};
 
 /* ---------------------------------------------------------
  *            Descriptors and USB driver objects
@@ -616,20 +628,38 @@ static bool usb_request_hook_cb(USBDriver *usbp) {
                 switch (usbp->setup[1]) { /* bRequest */
                     case HID_GET_REPORT:
                         switch (usbp->setup[4]) { /* LSB(wIndex) (check MSB==0?) */
+#ifndef KEYBOARD_SHARED_EP
                             case KEYBOARD_INTERFACE:
-                                usbSetupTransfer(usbp, (uint8_t *)&keyboard_report_sent, sizeof(keyboard_report_sent), NULL);
+                                usbSetupTransfer(usbp, (uint8_t *)&keyboard_report_sent, KEYBOARD_REPORT_SIZE, NULL);
                                 return TRUE;
                                 break;
-
+#endif
 #if defined(MOUSE_ENABLE) && !defined(MOUSE_SHARED_EP)
                             case MOUSE_INTERFACE:
-                                usbSetupTransfer(usbp, (uint8_t *)&mouse_report_blank, sizeof(mouse_report_blank), NULL);
+                                usbSetupTransfer(usbp, (uint8_t *)&mouse_report_sent, sizeof(mouse_report_sent), NULL);
                                 return TRUE;
                                 break;    
 #endif
-
+#ifdef SHARED_EP_ENABLE
+                            case SHARED_INTERFACE:
+#   ifdef KEYBOARD_SHARED_EP
+                                if (usbp->setup[2] == REPORT_ID_KEYBOARD) {
+                                    usbSetupTransfer(usbp, (uint8_t *)&keyboard_report_sent, KEYBOARD_REPORT_SIZE, NULL);
+                                    return TRUE;
+                                    break;
+                                }
+#   endif
+#   ifdef MOUSE_SHARED_EP
+                                if (usbp->setup[2] == REPORT_ID_MOUSE) {
+                                    usbSetupTransfer(usbp, (uint8_t *)&mouse_report_sent, sizeof(mouse_report_sent), NULL);
+                                    return TRUE;
+                                    break;                       
+                                }
+#   endif
+#endif /* SHARED_EP_ENABLE */
                             default:
-                                usbSetupTransfer(usbp, NULL, 0, NULL);
+                                universal_report_blank.report_id = usbp->setup[2];
+                                usbSetupTransfer(usbp, (uint8_t *)&universal_report_blank, usbp->setup[6], NULL);
                                 return TRUE;
                                 break;
                         }
@@ -922,6 +952,7 @@ void send_mouse(report_mouse_t *report) {
         }
     }
     usbStartTransmitI(&USB_DRIVER, MOUSE_IN_EPNUM, (uint8_t *)report, sizeof(report_mouse_t));
+    mouse_report_sent = *report;
     osalSysUnlock();
 }