Sugar Zhang 5ba8ecf227 ASoC: rockchip: Use generic dmaengine code ...

This reverts commit 75b31192fe.

The original purpose of customized pcm was to config prealloc buffer size
flexibly. but, we can do the same thing by soc-generic-dmaengine-pcm.

And the generic one can generated the better config by querying DMA
capabilities from dmaengine driver rather than the Hard-Coded one.

e.g.

the customized one:

  static const struct snd_pcm_hardware snd_rockchip_hardware = {
         .info                   = SNDRV_PCM_INFO_MMAP |
                                   SNDRV_PCM_INFO_MMAP_VALID |
                                   SNDRV_PCM_INFO_PAUSE |
                                   SNDRV_PCM_INFO_RESUME |
                                   SNDRV_PCM_INFO_INTERLEAVED,
  ...

the generic one:

  ret = dma_get_slave_caps(chan, &dma_caps);
  if (ret == 0) {
          if (dma_caps.cmd_pause && dma_caps.cmd_resume)
                  hw.info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME;
          if (dma_caps.residue_granularity <= DMA_RESIDUE_GRANULARITY_SEGMENT)
                  hw.info |= SNDRV_PCM_INFO_BATCH;
  ...

So, let's revert back to use the generic dmaengine pcm.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Reviewed-by: John Keeping <john@metanate.com>
Link: https://lore.kernel.org/r/1632792957-80428-1-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>

2021-10-20 11:12:42 +01:00

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