ASoC: tegra: allocate AHUB FIFO during probe() not startup()

Browse source

The Tegra30 I2S driver currently allocates DMA FIFOs from the AHUB only
when an audio stream starts playback. This is theoretically nice for
resource sharing, but makes no practical difference for any configuration
the drivers currently support. However, this deferral prevents conversion
to the standard DMA DT bindings, since conversion requires knowledge of
the specific DMA channel to be allocated, which in turn depends on which
specific FIFO was allocated.

For this reason, move the FIFO allocation into probe() to allow later
conversion to the standard DMA DT bindings.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@linaro.org>

...

This commit is contained in:

Stephen Warren 2013-11-15 11:48:47 -07:00

parent 768db0b93d

commit d59afb6a96

1 changed files with 47 additions and 44 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

91

sound/soc/tegra/tegra30_i2s.c

View file