wifi: mt76: dma: introduce __mt76_dma_queue_reset utility routine

This is a preliminary patch to introduce WED support for mt7996
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/dma.c

@@ -195,7 +195,8 @@ mt76_dma_sync_idx(struct mt76_dev *dev, struct mt76_queue *q)
 }
 
 static void
-mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q)
+__mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q,
+		       bool reset_idx)
 {
 	int i;
 
@@ -206,11 +207,19 @@ mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q)
 	for (i = 0; i < q->ndesc; i++)
 		q->desc[i].ctrl = cpu_to_le32(MT_DMA_CTL_DMA_DONE);
 
-	Q_WRITE(q, cpu_idx, 0);
-	Q_WRITE(q, dma_idx, 0);
+	if (reset_idx) {
+		Q_WRITE(q, cpu_idx, 0);
+		Q_WRITE(q, dma_idx, 0);
+	}
 	mt76_dma_sync_idx(dev, q);
 }
 
+static void
+mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q)
+{
+	__mt76_dma_queue_reset(dev, q, true);
+}
+
 static int
 mt76_dma_add_rx_buf(struct mt76_dev *dev, struct mt76_queue *q,
 		    struct mt76_queue_buf *buf, void *data)