virtio-input: generalize virtio_input_key_config()

As there are other bitmap-based config properties that need to be dealt in a
similar fashion as VIRTIO_INPUT_CFG_EV_BITS, generalize the function to
receive select and subsel as arguments, and rename it to
virtio_input_extend_config()

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230526112925.38794-2-slp@redhat.com>

hw/input/virtio-input-hid.c

@@ -44,30 +44,31 @@ static const unsigned short axismap_abs[INPUT_AXIS__MAX] = {
 
 /* ----------------------------------------------------------------- */
 
-static void virtio_input_key_config(VirtIOInput *vinput,
-                                    const unsigned short *keymap,
-                                    size_t mapsize)
+static void virtio_input_extend_config(VirtIOInput *vinput,
+                                       const unsigned short *map,
+                                       size_t mapsize,
+                                       uint8_t select, uint8_t subsel)
 {
-    virtio_input_config keys;
+    virtio_input_config ext;
     int i, bit, byte, bmax = 0;
 
-    memset(&keys, 0, sizeof(keys));
+    memset(&ext, 0, sizeof(ext));
     for (i = 0; i < mapsize; i++) {
-        bit = keymap[i];
+        bit = map[i];
         if (!bit) {
             continue;
         }
         byte = bit / 8;
         bit  = bit % 8;
-        keys.u.bitmap[byte] |= (1 << bit);
+        ext.u.bitmap[byte] |= (1 << bit);
         if (bmax < byte+1) {
             bmax = byte+1;
         }
     }
-    keys.select = VIRTIO_INPUT_CFG_EV_BITS;
-    keys.subsel = EV_KEY;
-    keys.size   = bmax;
-    virtio_input_add_config(vinput, &keys);
+    ext.select = select;
+    ext.subsel = subsel;
+    ext.size   = bmax;
+    virtio_input_add_config(vinput, &ext);
 }
 
 static void virtio_input_handle_event(DeviceState *dev, QemuConsole *src,
@@ -281,8 +282,9 @@ static void virtio_keyboard_init(Object *obj)
 
     vhid->handler = &virtio_keyboard_handler;
     virtio_input_init_config(vinput, virtio_keyboard_config);
-    virtio_input_key_config(vinput, qemu_input_map_qcode_to_linux,
-                            qemu_input_map_qcode_to_linux_len);
+    virtio_input_extend_config(vinput, qemu_input_map_qcode_to_linux,
+                               qemu_input_map_qcode_to_linux_len,
+                               VIRTIO_INPUT_CFG_EV_BITS, EV_KEY);
 }
 
 static const TypeInfo virtio_keyboard_info = {
@@ -373,8 +375,9 @@ static void virtio_mouse_init(Object *obj)
     virtio_input_init_config(vinput, vhid->wheel_axis
                              ? virtio_mouse_config_v2
                              : virtio_mouse_config_v1);
-    virtio_input_key_config(vinput, keymap_button,
-                            ARRAY_SIZE(keymap_button));
+    virtio_input_extend_config(vinput, keymap_button,
+                               ARRAY_SIZE(keymap_button),
+                               VIRTIO_INPUT_CFG_EV_BITS, EV_KEY);
 }
 
 static const TypeInfo virtio_mouse_info = {
@@ -497,8 +500,9 @@ static void virtio_tablet_init(Object *obj)
     virtio_input_init_config(vinput, vhid->wheel_axis
                              ? virtio_tablet_config_v2
                              : virtio_tablet_config_v1);
-    virtio_input_key_config(vinput, keymap_button,
-                            ARRAY_SIZE(keymap_button));
+    virtio_input_extend_config(vinput, keymap_button,
+                               ARRAY_SIZE(keymap_button),
+                               VIRTIO_INPUT_CFG_EV_BITS, EV_KEY);
 }
 
 static const TypeInfo virtio_tablet_info = {