unify blank reports into one case

Co-authored-by: Sergey Vlasov <sigprof@gmail.com>

tmk_core/protocol/chibios/usb_main.c

@@ -73,12 +73,24 @@ static virtual_timer_t keyboard_idle_timer;
 static void            keyboard_idle_timer_cb(void *arg);
 
 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
@@ -103,7 +115,7 @@ static const USBDescriptor *usb_get_descriptor_cb(USBDriver *usbp, uint8_t dtype
     static USBDescriptor desc;
     uint16_t             wValue = ((uint16_t)dtype << 8) | dindex;
     desc.ud_string              = NULL;
-    desc.ud_size                = get_usb_descriptor(wValue, wIndex, (const void **const) & desc.ud_string);
+    desc.ud_size                = get_usb_descriptor(wValue, wIndex, (const void **const)&desc.ud_string);
     if (desc.ud_string == NULL)
         return NULL;
     else
@@ -566,20 +578,38 @@ 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);
-                                return TRUE;
-                                break;
-
-#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 *)&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_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;
                         }
@@ -888,6 +918,7 @@ 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();
 }