On 12/11/2019 7.36, Vinod Koul wrote:

On 11-11-19, 12:29, Peter Ujfalusi wrote:

quoted

On 11/11/2019 8.09, Vinod Koul wrote:

quoted

On 01-11-19, 10:41, Peter Ujfalusi wrote:

quoted

quoted

quoted

+static enum dma_status udma_tx_status(struct dma_chan *chan,
+				      dma_cookie_t cookie,
+				      struct dma_tx_state *txstate)
+{
+	struct udma_chan *uc = to_udma_chan(chan);
+	enum dma_status ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&uc->vc.lock, flags);
+
+	ret = dma_cookie_status(chan, cookie, txstate);
+
+	if (!udma_is_chan_running(uc))
+		ret = DMA_COMPLETE;

so a paused channel will result in dma complete status?

The channel is still enabled (running), the pause only sets a bit in the
channel's real time control register.

Okay and which cases will channel not be running i.e., you return
DMA_COMPLETE above?

After terminate_all or before the first issue_pending call. When the
channel is disabled.

- Péter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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