Displaying 4 results from an estimated 4 matches for "snd_pcm_substream_chip".
2020 Sep 15
0
[PATCH 10/18] hal2: convert to dma_alloc_noncoherent
..._SIZE, codec->buffer, codec->buffer_dma,
+ buffer_dir);
}
static const struct snd_pcm_hardware hal2_pcm_hw = {
@@ -509,21 +512,16 @@ static int hal2_playback_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
- int err;
runtime->hw = hal2_pcm_hw;
-
- err = hal2_alloc_dmabuf(hal2, &hal2->dac);
- if (err)
- return err;
- return 0;
+ return hal2_alloc_dmabuf(hal2, &hal2->dac, DMA_TO_DEVICE);
}
static int hal2_playback_close(struct snd_pcm_substream *substream)
{
str...
2020 Sep 14
20
a saner API for allocating DMA addressable pages v2
Hi all,
this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs
with a separate new dma_alloc_pages API, which is available on all
platforms. In addition to cleaning up the convoluted code path, this
ensures that other drivers that have asked for better support for
non-coherent DMA to pages with incurring bounce buffering over can finally
be properly supported.
I'm still a
2020 Sep 15
32
a saner API for allocating DMA addressable pages v3
Hi all,
this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs
with a separate new dma_alloc_pages API, which is available on all
platforms. In addition to cleaning up the convoluted code path, this
ensures that other drivers that have asked for better support for
non-coherent DMA to pages with incurring bounce buffering over can finally
be properly supported.
As a follow up I
2020 Aug 19
39
a saner API for allocating DMA addressable pages
Hi all,
this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs
with a separate new dma_alloc_pages API, which is available on all
platforms. In addition to cleaning up the convoluted code path, this
ensures that other drivers that have asked for better support for
non-coherent DMA to pages with incurring bounce buffering over can finally
be properly supported.
I'm still a