[PATCH v2 00/15] ASoC: OMAP: Convert to use dmaengine

From: Peter Ujfalusi
Date: Thu Sep 13 2012 - 09:37:30 EST


- Support for pause/resume for OMAP audio via dmaengine
- dmaengine: support for NO_PERIOD_WAKEUP in cyclic mode
- OMAP to keep supporting NO_PERIOD_WAKEUP for audio
- Other plaforms can also try to enable this mode since we have now generic
interface to do so.

This series will switch the OMAP audio to use dmaengine.
The final patch which does the switch was based on Russell King's earlier patch.

The first 10 patch is to prepare the OMAP audio drivers for a smooth change to
- sDMA FRAME sync mode is removed and replaced with PACKET mode
- dai drivers no longer need to configure sDMA sync mode
- dai drivers does not need to specify the DMA word length - with the exception
of the omap-hdmi driver which requires 32bit word length regardless of the
audio format in use
- the McPDM driver used (to my surprise) hackish way of getting the DMA channel
and address - via defines from some header files

After the conversion OMAP audio support should have the same features as before,
no regressions expected.

I have tested the series on:
- BeagleBoard (audio via McBSP):
- aplay/arecord. In element mode and in threshold mode with different period
- mplayer -ao alsa: for direct ALSA access
- mplayer -ao pulse: via PulseAudio to test NO_PERIOD_WAKEUP feature
- OMAP4 Blaze (audio via McPDM and DMIC)
- aplay/arecord
- mplayer -ao alsa: for direct ALSA access
- mplayer -ao pulse: via PulseAudio to test NO_PERIOD_WAKEUP feature

The patches has been generated against:
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-3.7

Janusz: Can you retest this series on OMAP1 to be sure I have not broken it?
Ricardo: Can you test the omap-hmdi if it is still working?

Peter Ujfalusi (15):
dmaengine: omap: Support for element mode in cyclic DMA
dmaengine: omap: Add support for pause/resume in cyclic dma mode
dmaengine: Add no_wakeup parameter to dmaengine_prep_dma_cyclic()
dmaengine: Pass no_wakeup parameter via device_prep_dma_cyclic()
dmaengine: omap-dma: Add support for no_wakeup in cyclic mode
ASoC: omap-mcbsp: Use sDMA packet mode instead of frame mode
ASoC: omap-pcm: Select sDMA synchronization based on packet_size
ASoC: OMAP: Remove sync_mode from omap_pcm_dma_data struct
ASoC: omap-pcm: Prepare to configure the DMA data_type based on
stream properties
ARM: OMAP4: hwmod_data: Add resource names to McPDM memory ranges
ASoC: omap-mcpdm: Use platform_get_resource_* to get resources
ASoC: OMAP: mcbsp, mcpdm, dmic: Let omap-pcm to pick the dma_type
ASoC: omap-pcm, omap-dmic: Change the use of
ASoC: OMAP: mcbsp, mcpdm, dmic, hdmi: Set dma_data at startup time
ASoC: omap-pcm: Convert to use dmaengine

arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 2 +
drivers/dma/at_hdmac.c | 3 +-
drivers/dma/ep93xx_dma.c | 4 +-
drivers/dma/imx-dma.c | 2 +-
drivers/dma/imx-sdma.c | 2 +-
drivers/dma/mmp_tdma.c | 2 +-
drivers/dma/mxs-dma.c | 2 +-
drivers/dma/omap-dma.c | 47 ++++--
drivers/dma/pl330.c | 2 +-
drivers/dma/sa11x0-dma.c | 2 +-
drivers/dma/sirf-dma.c | 2 +-
drivers/dma/ste_dma40.c | 3 +-
drivers/dma/tegra20-apb-dma.c | 2 +-
include/linux/dmaengine.h | 8 +-
sound/soc/omap/Kconfig | 3 +-
sound/soc/omap/omap-dmic.c | 9 +-
sound/soc/omap/omap-hdmi.c | 17 ++-
sound/soc/omap/omap-mcbsp.c | 60 +++-----
sound/soc/omap/omap-mcpdm.c | 40 +++--
sound/soc/omap/omap-pcm.c | 236 ++++++++---------------------
sound/soc/omap/omap-pcm.h | 4 +-
sound/soc/soc-dmaengine-pcm.c | 3 +-
22 files changed, 186 insertions(+), 269 deletions(-)


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