We don't copy when host_avail is 0(usually stream finished), at the same time, we need wait until the dma copy is finished before we can start next pulling copy.
Signed-off-by: Keyon Jie yang.jie@linux.intel.com --- src/audio/host.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/src/audio/host.c b/src/audio/host.c index 4b60943..0580837 100644 --- a/src/audio/host.c +++ b/src/audio/host.c @@ -809,14 +809,26 @@ static int host_reset(struct comp_dev *dev) static int host_copy(struct comp_dev *dev) { struct host_data *hd = comp_get_drvdata(dev); + int ret;
+ trace_host("CpS"); if (dev->state != COMP_STATE_RUNNING) return 0;
- trace_host("CpS"); + if (!hd->host_avail) + return 0; + + /* do DMA transfer */ + wait_init(&hd->complete); dma_set_config(hd->dma, hd->chan, &hd->config); dma_start(hd->dma, hd->chan);
+ /* wait for DMA to finish */ + hd->complete.timeout = PLATFORM_DMA_TIMEOUT; + ret = wait_for_completion_timeout(&hd->complete); + if (ret < 0) + trace_comp_error("eHc"); + return 0; } struct comp_driver comp_host = {