[Sound-open-firmware] [PATCH] host: Stop dma when pause

[Jie, Yang]

>-----Original Message-----
>From: sound-open-firmware-bounces at alsa-project.org [mailto:sound-open-
>firmware-bounces at alsa-project.org] On Behalf Of Xiuli Pan
>Sent: Thursday, March 15, 2018 1:20 PM
>To: sound-open-firmware at alsa-project.org
>Cc: Pan Xiuli <xiuli.pan at linux.intel.com>; Pan, Xiuli <xiuli.pan at intel.com>
>Subject: [Sound-open-firmware] [PATCH] host: Stop dma when pause
>
>From: Pan Xiuli <xiuli.pan at linux.intel.com>
>
>For gw-dma host, we need to stop the dma to make sure status are correct
>for resume.

What happen if we don't stop for pause, that is what we do for gpdma on BYT.

Thanks,
~Keyon

>
>Signed-off-by: Pan Xiuli <xiuli.pan at linux.intel.com>
>
>---
>Test with:
>Mininow max rt5651 and GP-MRB nocodec
>SOF 1.1-stable: aa09938fd330232b201f5683faf8e32975ffcfac
>SOF-Tool 1.1-stable: 8d9b8d51f9c60e1c1725e9ccd3da22c0b523d0cf
>https://github.com/plbossart/sound/tree/topic/sof-v4.14:
>84ed2d3ba0220424dd441f3a28ed2fe83967ad3a
>---
> src/audio/host.c | 3 +++
> 1 file changed, 3 insertions(+)
>
>diff --git a/src/audio/host.c b/src/audio/host.c
>index 287c886..744ca02 100644
>--- a/src/audio/host.c
>+++ b/src/audio/host.c
>@@ -465,6 +465,9 @@ static int host_cmd(struct comp_dev *dev, int cmd, void
>*data)
> 		return ret;
>
> 	switch (cmd) {
>+	case COMP_CMD_PAUSE:
>+		dma_stop(hd->dma, hd->chan);
>+		break;
> 	case COMP_CMD_STOP:
> 		ret = host_stop(dev);
> 		break;
>--
>2.7.4
>
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