[alsa-devel] [PATCH v2 0/4] ASoC: Regression fix for OMAP in DT boot (3.11)

Peter Ujfalusi peter.ujfalusi at ti.com
Thu Jul 11 14:35:42 CEST 2013


Changes since v1:
- Drop the change in dmaengine_pcm.h
- Use .filter_data to store the DMA channel name
 - omap-pcm: checks if the DAI is probed via DT and uses decides which method to
   use to request the DMA channel
- Dropped the cleanup patch for omap-dmic from the series
  I will send another series with cleanups later

I just noticed in mainline kernel (pre 3.11-rc1) that OMAP4 audio is not probing
anymore. This is because OMAP4 also moved to DT only mode (3.10 DT boot was
The issue underneath is that we can not use platform_get_resource_byname() for
DMA resources when booted with devicetree.

In case of DT boot we can use the DMA name to request the channel.

Due to technical issues OMAP can not be moved to generic dmaengine pcm as other
SoCs did.

Mark: can you queue this series for 3.11? Thank you.

Peter Ujfalusi (4):
  ASoC: omap-pcm: Request the DMA channel differently when DT is
  ASoC: omap-mcpdm: Do not use platform_get_resource_byname() for DMA
  ASoC: omap-dmic: Do not use platform_get_resource_byname() for DMA
  ASoC: omap-mcbsp: Use different method for DMA request when booted
    with DT

 sound/soc/omap/mcbsp.c      | 39 ++++++++++++++++++++++-----------------
 sound/soc/omap/omap-dmic.c  | 11 +----------
 sound/soc/omap/omap-mcpdm.c | 16 ++--------------
 sound/soc/omap/omap-pcm.c   | 17 ++++++++++++++---
 4 files changed, 39 insertions(+), 44 deletions(-)


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