summaryrefslogtreecommitdiffstats
path: root/sound/soc/tegra/tegra_pcm.c
Commit message (Collapse)AuthorAgeFilesLines
* ASoC: tegra: Use generic dmaengine PCMLars-Peter Clausen2013-04-171-162/+9
| | | | | | | | 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>
* Merge tag 'v3.9-rc7' into asoc-dmaMark Brown2013-04-171-23/+1
|\ | | | | | | Linux 3.9-rc7
| * ASoC: tegra: Don't claim to support PCM pause and resumeLars-Peter Clausen2013-04-031-23/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | ASoC: dmaengine-pcm: Make requesting the DMA channel at PCM open optionalLars-Peter Clausen2013-04-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | ASoC: tegra: Use common DAI DMA data structLars-Peter Clausen2013-04-031-13/+3
| | | | | | | | | | | | | | | | | | | | 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>
* | ASoC: tegra_pcm: No need to wrap snd_dmaengine_pcm_close()Lars-Peter Clausen2013-03-261-7/+1
|/ | | | | | | | | | | 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>
* ASoC: tegra: remove __dev* attributesBill Pemberton2012-12-101-2/+2
| | | | | | | | | | | 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>
* ASoC: tegra: remove support of legacy DMA driver based accessLaxman Dewangan2012-09-171-232/+0
| | | | | | | | | | | 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>
* ASoC: tegra: fix maxburst settings in dmaengine codeStephen Warren2012-09-071-2/+2
| | | | | | | | | | | | 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
* ASoC: tegra: use dmaengine based dma driverLaxman Dewangan2012-07-031-0/+115
| | | | | | | | | | | | | | | | | | | 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>
* ASoC: tegra: sort includes, remove mach/iomap.hStephen Warren2012-04-061-1/+1
| | | | | Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* ASoC: tegra: register 'platform' from DAIs, get rid of pdevStephen Warren2012-04-011-19/+7
| | | | | | | | | | | | | | | | | 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>
* ASoC: replace 0xffffffff with DMA_BIT_MASK macroJoachim Eastwood2012-01-201-1/+1
| | | | | Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* ASoC: check for substream not channels_min in pcm enginesJoachim Eastwood2012-01-071-3/+2
| | | | | | | | | | | | | | | This is a follow up on 53dea36c70c1857 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>
* ASoC: Tegra PCM: Use module_platform_driverStephen Warren2011-11-231-12/+1
| | | | | | | This saves some boiler-plate code. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* ASoC: Tegra: sparse cleanupOlof Johansson2011-10-171-1/+1
| | | | | | | | | | | | 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>
* ASoC: Tegra: tegra_pcm_deallocate_dma_buffer: Don't OOPSStephen Warren2011-08-091-2/+7
| | | | | | | | | | | | 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
* ASoC: core - Optimise and refactor pcm_new() to pass only rtdLiam Girdwood2011-06-071-2/+4
| | | | | | | | | | 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>
* ASoC: Tegra: Fix error handling in DMA channel allocStephen Warren2011-02-281-2/+2
| | | | | | | | 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>
* ASoC: Tegra: Add MODULE_ALIASStephen Warren2011-02-131-1/+4
| | | | | | | | 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>
* ASoC: tegra: Add tegra-pcm driverStephen Warren2011-01-101-0/+401
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>
OpenPOWER on IntegriCloud