Commit Graph

21 Commits

Author SHA1 Message Date
Lars-Peter Clausen
11a8576a0a ASoC: tegra: Use generic dmaengine PCM
Use the generic dmaengine PCM driver instead of a custom implementation.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-17 14:25:09 +01:00
Mark Brown
753e23ea58 Linux 3.9-rc7
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQEcBAABAgAGBQJRa02/AAoJEHm+PkMAQRiGDRoH/08Cu2LpmX4VN+YMC3BkGWxn
 4oOHGqdN0hrIQ4TysC43QNL6g7QJUnIR6fChn7pRJ6a8ljdzKjDHr/tZSIPJE3Ns
 UAGIDaaQWnZvGmHPzpbo4gmdMOTxg9xmpgac6Qpk6QowPIPc6fhl6AichP9OdH2G
 Fp6Irfznn5ZCBldJYg2+umoHyFTZARCxtdOKmmUnB7zH0GaX5ZRf/R6nmZEPlxE+
 5qJC1yxRxJE+I7gjNRFovxaLPuAmjPy5j6NJuGP8rR6epkhcJ2EVHSliI3KDKAO6
 D3Fy9T5qHv2A2gvSxtC0m5/1WrutXZqxZ/DOB/uv9U7vqomiIs/EsHIuvc9qFBY=
 =NrST
 -----END PGP SIGNATURE-----

Merge tag 'v3.9-rc7' into asoc-dma

Linux 3.9-rc7
2013-04-17 14:24:35 +01:00
Lars-Peter Clausen
7c1c1d4a7b ASoC: dmaengine-pcm: Make requesting the DMA channel at PCM open optional
Refactor the dmaengine PCM library to allow the DMA channel to be requested
before opening a PCM substream. snd_dmaengine_pcm_open() now expects a DMA
channel instead of a filter function and filter parameter as its parameters.
snd_dmaengine_pcm_close() is updated to not release the DMA channel. This allows
a dmaengine based PCM driver to request its channels before the substream is
opened.

The patch also introduces two new functions, snd_dmaengine_pcm_open_request_chan()
and snd_dmaengine_pcm_close_release_chan(), which have the same signature and
behaviour of the old snd_dmaengine_pcm_{open,close}() and internally use the new
variants of these functions. All users of snd_dmaengine_pcm_{open,close}() are
updated to use snd_dmaengine_pcm_open_request_chan() and
snd_dmaengine_pcm_close_release_chan().

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-17 14:17:54 +01:00
Lars-Peter Clausen
3489d5067a ASoC: tegra: Use common DAI DMA data struct
Use the common DAI DMA data struct for tegra, this allows us to use the common
helper function to configure the DMA slave config based on the DAI DMA data.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-03 18:13:34 +01:00
Lars-Peter Clausen
5aa995e83a ASoC: tegra: Don't claim to support PCM pause and resume
The tegra dmaengine driver does not support pausing and resuming a DMA stream.
The tegra PCM driver still claims to support pause and resume though and
implements them by stopping and restarting the stream. This is not what an
application using pause/resume would expect. Usually applications have support
for working around PCMs which do not support suspend and resume, so don't set
the SNDRV_PCM_INFO_PAUSE and SNDRV_PCM_INFO_RESUME flags for the tegra PCM and
use the default snd_dmaengine_pcm_trigger callback.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-03 18:11:08 +01:00
Lars-Peter Clausen
3021bd38ed ASoC: tegra_pcm: No need to wrap snd_dmaengine_pcm_close()
If a PCM driver using the dmaengine PCM helper functions doesn't need to do
anything special in its pcm_close callback, snd_dmaengine_pcm_close can be used
directly for as the pcm_close callback and there is no need to wrap it in a
custom function.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-26 14:14:55 +00:00
Bill Pemberton
4652a0d0c4 ASoC: tegra: remove __dev* attributes
CONFIG_HOTPLUG is going away as an option.  As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-10 00:31:41 +09:00
Laxman Dewangan
9891e32405 ASoC: tegra: remove support of legacy DMA driver based access
Remove the support code which uses the legacy APB DMA driver
for accessing the I2S FIFO.
The driver will use the dmaengine based APB DMA driver for
accessing reqding/writing to I2S FIFO.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-17 09:34:44 -06:00
Stephen Warren
a32826e4ae ASoC: tegra: fix maxburst settings in dmaengine code
The I2S controllers are programmed with an "attention" level of 4 DWORDs.
This must match the configuration passed to the DMA driver, so that when
they burst in data, they don't overflow the available FIFO space. Also,
the burst size is relevant to the destination for playback, and source
for capture, not vice-versa as originally written.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
2012-09-07 09:52:02 +08:00
Laxman Dewangan
df79f55df3 ASoC: tegra: use dmaengine based dma driver
Use the dmaengine based Tegra APB DMA driver for
data transfer between SPI fifo and memory in
place of legacy Tegra APB DMA.

Because generic soc-dmaengine-pcm uses the DMAs API
based on dmaengine, using the exported APIs provided
by this generic driver.

The new driver is selected if legacy driver is not
selected and new dma driver is enabled through config
file.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:07:24 +01:00
Stephen Warren
7613c508df ASoC: tegra: sort includes, remove mach/iomap.h
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-06 18:22:06 +01:00
Stephen Warren
518de86ba1 ASoC: tegra: register 'platform' from DAIs, get rid of pdev
Previously, the ASoC 'platform' (PCM/DMA) object was instantiated via a
platform_device. This didn't represent the hardware well, since there
was no separate hardware associated with this platform_device; it was a
virtual device with sole purpose to call snd_soc_register_platform().
This mechanism required all board files to register this device, and all
ASoC machine drivers to create and register this device when booting
using device tree.

This change removes the platform_device completely. Each Tegra DAI now
registers the ASoC 'platform' itself. Machine drivers are adjusted for
the new 'platform' name.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-01 11:28:28 +01:00
Joachim Eastwood
350e16d529 ASoC: replace 0xffffffff with DMA_BIT_MASK macro
Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-20 13:58:26 +00:00
Joachim Eastwood
25e9e7565f ASoC: check for substream not channels_min in pcm engines
This is a follow up on 53dea36c70 which fixes the other affected
pcm engines.

Description from 53dea36c70c1857:
 Don't rely on the codec's channels_min information to decide wheter or
 not allocate a substream's DMA buffer. Rather check if the substream
 itself was allocated previously.

Without this patch I was seeing null-pointer dereferenc in atmel-pcm.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-07 11:18:05 -08:00
Stephen Warren
99c92ae4ff ASoC: Tegra PCM: Use module_platform_driver
This saves some boiler-plate code.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-23 10:24:10 +00:00
Olof Johansson
01840bbe5f ASoC: Tegra: sparse cleanup
Fixes the following sparse warnings:

sound/soc/tegra/tegra_das.c:215:8: warning: Using plain integer as NULL pointer
sound/soc/tegra/tegra_das.c:237:8: warning: Using plain integer as NULL pointer
sound/soc/tegra/tegra_pcm.c:370:32: warning: symbol 'tegra_pcm_platform' was not declared. Should it be static?

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-10-17 22:43:16 +01:00
Stephen Warren
a96edd59b2 ASoC: Tegra: tegra_pcm_deallocate_dma_buffer: Don't OOPS
Not all PCM devices have all sub-streams. Specifically, the SPDIF driver
only supports playback and hence has no capture substream. Check whether
a substream exists before dereferencing it, when de-allocating DMA
buffers in tegra_pcm_deallocate_dma_buffer.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
2011-08-09 09:40:57 +09:00
Liam Girdwood
552d1ef6b5 ASoC: core - Optimise and refactor pcm_new() to pass only rtd
Currently pcm_new() passes in 3 arguments :- card, pcm and DAI.

Refactor this to only pass in 1 argument (i.e. the rtd) since struct rtd contains
card, pcm and DAI along with other members too that are useful too.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-07 18:38:27 +01:00
Stephen Warren
e1412e636e ASoC: Tegra: Fix error handling in DMA channel alloc
tegra_dma_allocate_channel() returns NULL on errors, not an error pointer.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-02-28 15:10:03 +00:00
Stephen Warren
8eb34207c8 ASoC: Tegra: Add MODULE_ALIAS
With the appropriate MODULE_ALIAS in place, the audio modules will be
automatically loaded; there is no longer a need for manual modprobes.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-02-13 19:50:10 +00:00
Stephen Warren
7605eb5bc3 ASoC: tegra: Add tegra-pcm driver
This provides an ASoC platform driver that manages Tegra's APB DMA
controller.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-01-10 22:20:29 +00:00