drivers: udc_stm32: implement driver API to get actual device speed

Implement driver API to get actual device speed.

Signed-off-by: Johann Fischer <[email protected]>

Author: jfischer-no

drivers/usb/udc/udc_stm32.c

@@ -778,6 +778,21 @@ static int udc_stm32_ep_dequeue(const struct device *dev,
 	return 0;
 }
 
+static enum udc_bus_speed udc_stm32_device_speed(const struct device *dev)
+{
+	struct udc_stm32_data *priv = udc_get_private(dev);
+
+	if (priv->pcd.Init.speed == USBD_HS_SPEED) {
+		return UDC_BUS_SPEED_HS;
+	}
+
+	if (priv->pcd.Init.speed == USBD_FS_SPEED) {
+		return UDC_BUS_SPEED_FS;
+	}
+
+	return UDC_BUS_UNKNOWN;
+}
+
 static const struct udc_api udc_stm32_api = {
 	.lock = udc_stm32_lock,
 	.unlock = udc_stm32_unlock,
@@ -794,6 +809,7 @@ static const struct udc_api udc_stm32_api = {
 	.ep_clear_halt = udc_stm32_ep_clear_halt,
 	.ep_enqueue = udc_stm32_ep_enqueue,
 	.ep_dequeue = udc_stm32_ep_dequeue,
+	.device_speed = udc_stm32_device_speed,
 };
 
 /* ----------------- Instance/Device specific data ----------------- */