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path: root/sound/soc/soc-pcm.c
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2012-02-17ASoC: dapm: Supply the DAI and substream when calling stream eventsMark Brown
In order to allow us to do something smarter than iterate through widgets doing strcmp() to work out what to power up for stream events change the interface used to generate them to be based on the combination of a DAI and a stream direction rather than just a simple string identifying the stream. At some point we'll probably want a set of channels too. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2012-02-09ASoC: pcm: If pmdown_time is zero then shut down DAPM immediatelyMark Brown
Since we've already got logic to special case immediate teardown of the stream we may as well use it if the pmdown_time has been set to zero by the application layer instead of scheduling a work item with zero delay. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2012-02-02ASoC: pcm: Improve error loggingMark Brown
Use the standard logging macros and use dev_ variants where we can, also reporting error codes whenever we report an error. These changes (the error codes in particular) make it noticeably easier to figure out what went wrong just from the basic dmesg output. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2012-01-25ASoC: soc-pcm: msbits constraint: Drop 8 and 16 bit sample sizesPeter Ujfalusi
As per discussion we can safely ignore the 8 and 16 bit sample sizes when applying the msbits constraint. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-21ASoC: Don't tell applications about msbits unless we're ignoring inputMark Brown
On the off chance that an application both pays attention and gets confused. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-20ASoC: Allow drivers to specify how many bits are significant on a DAIMark Brown
Most devices accept data in formats that don't correspond directly to their internal format. ALSA allows us to set a msbits constraint which tells userspace about this in case it finds it useful (for example, in order to avoid wasting effort dithering bits that will be ignored when raising the sample size of data) so provide a mechanism for drivers to specify the number of bits that are actually significant on a DAI and add the appropriate constraints along with all the others. This is done slightly awkwardly as the constraint is specified per sample size - we loop over every possible sample size, including ones that the device doesn't support and including ones that have fewer bits than are actually used, but this is harmless as the upper layers do the right thing in these cases. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2012-01-03ASoC: soc-pcm: Allocate PCM operations dynamically to support multiple DAIsSangsu Park
The original code does not cover the case that two DAIs(CPU) have different ASoC core PCM operations(like mmap, pointer...). Currently we have only one global soc_pcm_ops for ASoC core PCM operation. When two DAIs have different pointer functions, second DAI's pointer function is set for both first DAI and second DAI in case of original code. This patch uses runtime's pcm_ops instead of global pcm_ops for each DAIs. So each DAIs can have different ASoC core PCM operations. This is needed to support multiple DAIs. Signed-off-by: Sangsu Park <sangsu4u.park@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-08ASoC: Hold runtime PM references to components of active DAIsMark Brown
Every device that implements runtime power management for DAIs is doing it in pretty much the same way: in the startup callback they take a runtime PM reference and then in the shutdown callback they release that reference, keeping the device active while the DAI is active. Given the frequency with which this is done and the obviousness of the need to keep the device active in this period factor the code out into the core, taking references on the device for each CPU DAI, CODEC DAI and DMA device in the core. As runtime PM is reference counted this shouldn't interfere with any other reference holding by the drivers, and since (in common with the existing implementations) we don't check for errors on enabling it shouldn't matter if the device actually has runtime PM enabled or not. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
2011-11-04ASoC: Remove needless unlikely()Mark Brown
There's no point in adding unlikely() annotations outside of hot paths and on systems using these features the annotation will always be wrong (as opposed to being something that only comes up once in a while) so the annotation may even be harmful. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-10-27ASoC: Allow machines to ignore pmdown_time per-linkramesh.babu@linux.intel.com
With this flag, each dai_link in machine driver can choose to ignore pmdown_time during DAPM shut down sequence. If the ignore_pmdown_time is set, the DAPM for corresponding DAI will be executed immediately. Signed-off-by: Ramesh Babu K V <ramesh.babu@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-10-14ASoC: core: Add flag to ignore pmdown_time at pcm_closePeter Ujfalusi
With this flag codec drivers can indicate that it is desired to ignore the pmdown_time for DAPM shutdown sequence when playback stream is stopped. The DAPM sequence will be executed without delay in this case. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-09-21ASoC: soc-core: symmetry checking for each DAIs separatelyDong Aisheng
The orginal code does not cover the case that one DAI such as codec may be shared between other two DAIs(CPU). When do symmetry checking, altough the codec DAI requires symmetry, the two CPU DAIs may still be configured to run on different rates. We change to check each DAI's state separately instead of only checking the dai link to prevent this issue. Signed-off-by: Dong Aisheng <b29396@freescale.com> Tested-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-08-17Merge branch 'for-3.1' into for-3.2Mark Brown
2011-08-17ASoC: Fix check for symmetric rate enforcementSascha Hauer
The ASoC core tries to not enforce symmetric rates when two streams open simultaneously. It does so by checking rtd->rate being zero. This works exactly once after booting because it is not set to zero again when the streams close. Fix this by setting rtd->rate when no active stream is left. [This leads to lots of warnings about not enforcing the symmetry in some situations as there's a race in the userspace API where we know we've got two applications but don't know what rates they want to set. -- broonie ] Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-08-15ASoC: soc-pcm: Remove unused global mutexAxel Lin
Since commit b8c0dab9bf3373010e857a8d3f1b594c60a348dd "ASoC: core - PCM mutex per rtd", the global pcm_mutex is not being used any more. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-09ASoC: pcm - rename snd_codec_close() to snd_pcm_close().Liam Girdwood
Make sure we follow naming convention for all PCM ops. Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-09ASoC: core - PCM mutex per rtdLiam Girdwood
In preparation for the new ASoC Dynamic PCM support (AKA DSP support). The new ASoC Dynamic PCM core allows DAIs to be dynamically re-routed at runtime between the PCM device end (or Frontend - FE) and the physical DAI (Backend - BE) using regular kcontrols (just like a hardware CODEC routes audio in the analog domain). The Dynamic PCM core therefore must be able to call PCM operations for both the Frontend and Backend(s) DAIs at the same time. Currently we have a global pcm_mutex that is used to serialise the ASoC PCM operations. This patch removes the global mutex and adds a mutex per RTD allowing the PCM operations to be reentrant and allow control of more than one DAI at at time. e.g. a frontend PCM hw_params() could configure multiple backend DAI hw_params() with similar or different hw parameters at the same time. Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-09ASoC: core - Separate out PCM operations into new file.Liam Girdwood
In preparation for Dynamic PCM support (AKA DSP support). There will be future patches that add support to allow PCMs to be dynamically routed to multiple DAIs at startup and also during stream runtime. This patch moves the ASoC core PCM operaitions into a new file called soc-pcm.c. This will in simplify the ASoC core features into distinct files. Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>