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path: root/sound/soc/sof/pcm.c
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2020-10-06Merge tag 'v5.9-rc5' into asoc-5.10Mark Brown
Linux 5.9-rc5
2020-08-25ASoC: Intel: use consistent HDAudio spelling in comments/docsPierre-Louis Bossart
We use HDaudio and HDAudio, pick one to make searches easier. No functionality change Reported-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200824200912.46852-9-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-08-25ASoC: SOF: IPC: reduce verbosity of IPC pointer updatesPierre-Louis Bossart
When using dynamic debug, the console is swamped with verbose position pointer logs, which really don't add much information. Move then to vdbg to keep traces usable and allow for easier end-user support. Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200824200912.46852-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-07-23ASoC: sof: use asoc_substream_to_rtd()Kuninori Morimoto
Now we can use asoc_substream_to_rtd() macro, let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/87o8ob0yun.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-22ASoC: SOF: pcm: Update rate/channels for SAI/ESAI DAIsDaniel Baluta
Fixup BE DAI links rate/channels parameters to match any values from topology. Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Link: https://lore.kernel.org/r/20200720072046.8152-8-daniel.baluta@oss.nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-01ASoC: SOF/Intel: clarify SPDX license with GPL-2.0-onlyPierre-Louis Bossart
Remove the ambiguity with GPL-2.0 and use an explicit GPL-2.0-only tag. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Link: https://lore.kernel.org/r/20200501145850.15178-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-30ASoC: SOF: Intel: change trigger sequence to fix pop noise when stopping ↵randerwang
playback on sdw platforms Now the trigger sequence is set to SND_SOC_DPCM_TRIGGER_POST for SOF. This means FE will be stopped before BE, so BE will consume invalid data and this generates huge pop noise. This sequence is introduced for HDA DAI which requires SND_SOC_DPCM_TRIGGER_POST for some reasons. Now set default trigger sequence to SND_SOC_DPCM_TRIGGER_PRE for playback with all DAI and fix sequence only for HDA DAI. Fully tested on Comet Lake for a few cycles. Signed-off-by: randerwang <rander.wang@linux.intel.com> Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Clarex Zhou <clarex.zhou@intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200427172939.25848-5-ranjani.sridharan@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-04-21ASoC: sof: use snd_compress_opsKuninori Morimoto
We can use snd_compress_ops. Let's switch to use it. Upstream code doesn't have sof_compressed_ops. This patch assume it is implemented at out-of-tree. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Link: https://lore.kernel.org/r/87o8rmvdj7.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-26ASoC: SOF: fix uninitialised "work" with VirtIOGuennadi Liakhovetski
In the VirtIO case the sof_pcm_open() function isn't called on the host during guest streaming, which then leaves "work" structures uninitialised. However it is then used to handle position update messages from the DSP. Move their initialisation to immediately after allocation of the containing structure. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Link: https://lore.kernel.org/r/20200325211233.27394-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-03-02ASoC: SOF: pcm: skip DMA buffer pre-allocationKeyon Jie
As discussion in ALSA https://patchwork.kernel.org/patch/11336023/, it is suggested to skip DMA buffer pre-allocation with passing size=0 when calling snd_pcm_set_managed_buffer(), to make the full buffer_bytes range configured in topology file selectable from user space, here do the corresponding change in SOF PCM driver to implement it. This change doesn't have dependency to the change that Takashi will do in the ALSA core by adding total_pcm_alloc_bytes limitation to the struct snd_card, it passes tests both with or without Takashi's coming change on SOF CML platform. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Keyon Jie <yang.jie@linux.intel.com> Link: https://lore.kernel.org/r/20200228231850.9226-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-18ASoC: SOF: Intel: Add Probe compress CPU DAIsCezary Rojewski
Declare extraction CPU DAI as well as sof_probe_compr_ops. FE DAIs can link against these new CPU DAI to create new compress devices. Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200218143924.10565-10-cezary.rojewski@intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-11ASoC: SOF: Add system_suspend_target field to struct snd_sof_devRanjani Sridharan
Add the system_suspend_target field to struct snd_sof_dev to track the intended system suspend power target. This will be used as one of the criteria for determining the final DSP power state. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200129220726.31792-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-27ASoC: SOF: fix an Oops, caused by invalid topologyGuennadi Liakhovetski
It is possible to create invalid topology that will cause a kernel Oops when trying to allocate buffers for a NULL substream. Specifically such an Oops was caused by a topology, where a DAI on a capture pipeline was referencing the PCM ID from a playback pipeline. Fix the Oops by explicitly checking for NULL. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200124213625.30186-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-13ASoC: SOF: fix PCM playback through ALSA OSS emulationKai Vehmanen
Any app using ALSA OSS emulation on top of SOF will fail to error from OSS SNDCTL_DSP_SETFMT ioctl. Reported initially as an issue with xournalpp (application using PortAudio with an OSS backend), but applies more generally to other apps using OSS as well. Problem is caused by SOF PCM not supporting repeated calls to hw_params(), without matching calls to pcm_free(). This is however exactly what the ALSA OSS PCM code is doing when it is handling the OSS ioctls. The problem will lead to leaking of DSP resources and eventual failure of DSP PCM_PARAMS IPC. BugLink: https://github.com/thesofproject/linux/issues/1510 Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20200110235751.3404-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-18ASoC: SOF: imx: Read SAI parameters and send them to DSPGuido Roncarolo
Follow example from Intel SSP. Signed-off-by: Guido Roncarolo <guido.roncarolo@nxp.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191218002616.7652-9-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-12ASoC: SOF: Use managed buffer allocationTakashi Iwai
Clean up the drivers with the new managed buffer allocation API. The superfluous snd_pcm_lib_malloc_pages() and snd_pcm_lib_free_pages() calls are dropped. Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191211172019.23206-2-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: SOF: Drop superfluous ioctl PCM opsTakashi Iwai
ASoC PCM core deals the empty ioctl field now as default. Let's kill the redundant lines. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210145406.21419-17-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-09ASoC: SOF: partition audio-related parts from SOF coreRanjani Sridharan
Move all the audio-specific code in the core, audio-specific logic in the top-level PM callbacks and the core header files into a separate file (sof-audio.*) in preparation for adding an audio client device. In the process of moving all structure definitions for widget, routes, pcm's etc, the snd_sof_dev member in all these structs is replaced with the snd_soc_component member. Also, use the component device instead of the snd_sof_dev device wherever possible in the PCM component driver, control IO functions and the topology parser as the component device will be moved over to the client device later on. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191204211556.12671-9-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-09ASoC: SOF: core: move check for runtime callbacks to coreRanjani Sridharan
For some platforms, the refcount is explicitly incremented to prevent it from entering runtime suspend. This should be be done during probe in the core instead of being done in the PCM driver. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191204211556.12671-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-09ASoC: SOF: core: modify the signature for snd_sof_create_page_tableRanjani Sridharan
Modify the signature for snd_sof_create_page_table to take struct device pointer as an argument instead of struct snd_sof_dev as this will be used by both the SOF core device and its clients. Also, move the definition out of core.c to utils.c. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191204211556.12671-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-11-09ASoC: SOF: Drop superfluous snd_pcm_sgbuf_ops_pageTakashi Iwai
snd_pcm_sgbuf_ops_page is no longer needed to be set explicitly to PCM page ops since the recent change in the PCM core (*). Leaving it NULL should work as long as the preallocation has been done properly. This patch drops the redundant lines. (*) 7e8edae39fd1: ALSA: pcm: Handle special page mapping in the default mmap handler Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20191108094641.20086-6-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-28ASoC: SOF: ignore suspend/resume for D0ix compatible streamsKeyon Jie
During system suspend, the PM framework will freeze all applications and the ALSA/ASoC core will suspend all RUNNING PCM streams. However, D0ix-compatible PCM streams should keep the related pipelines active in the DSP when the system is entering S0ix. The TRIGGER_SUSPEND event is trapped in such cases to prevent the pipelines from being stopped. Likewise, the TRIGGER_RESUME/START events should not affect the pipeline state. The SOF driver also triggers some DSP Firmware pipelines based on the DAPM widgets power events. In such cases, we also ignore PRE_PMU and POST_PMD events to keep the pipelines active. Signed-off-by: Keyon Jie <yang.jie@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191025224122.7718-23-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-25ASoC: SOF: define INFO_ flags in dsp_opsPierre-Louis Bossart
Currently the INFO_ flags such as PAUSE/NO_PERIOD_WAKEUP are defined in the SOF PCM core, which doesn't scale. To account for platform variations, these flags need to be set in DSP ops. This patch only moves the definitions and does not change any functionality. Reviewed-by: Jaska Uimonen <jaska.uimonen@intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191024210318.30068-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-10ASoC: SOF: imx: Read ESAI parameters and send them to DSPDaniel Baluta
ESAI parameters are read for topology file, packed into sof_ipc_dai_esai_parms struct and then sent to DSP. Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191008164443.1358-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-08ASoC: sof: pcm: remove snd_pcm_opsKuninori Morimoto
snd_pcm_ops is no longer needed. Let's use component driver callback. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/8736gbaf07.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01ASoC: SOF: pcm: harden PCM STOP sequencePan Xiuli
The old STOP sequence is: 1. stop DMA 2. send STOP ipc If delay happen before the steps 1 and 2, the DMA buffer will be empty in short time and cause pipeline xrun then stop the pipeline. Then the step 2 ipc stop will return error as pipeline is already stopped. Suggested change to avoid the issue is to switch the order of steps 1 and 2 for the stop sequence. Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190927200538.660-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01ASoC: SOF: pcm: fix resource leak in hw_freeKai Vehmanen
Fix a bug in sof_pcm_hw_free() where some cleanup actions were skipped if STREAM_PCM_FREE IPC was already successfully sent to DSP when the stream was stopped or suspended. This is incorrect as hw_free should clean up also other resources, including pcm lib page allocations, period elapsed work queue and call to platform hw_free. Fixes: c29d96c3b9b4 ("ASoC: SOF: reset DMA state in prepare") Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190927200538.660-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-16ASoC: SOF: pcm: add ALH supportPierre-Louis Bossart
Even if ALH has no specific configuration, we still need to handle the common parameters for all DAIs Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190815192018.30570-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-07-23ASoC: SOF: use common code to send PCM_FREE IPCKai Vehmanen
Remove duplicated code by using a common helper function to send the PCM_FREE IPC message to FW. Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190722141402.7194-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-07-23ASoC: SOF: reset DMA state in prepareKai Vehmanen
When application goes through SUSPEND/STOP->PREPARE->START cycle, we should always reprogram the SOF device to start DMA from a known state so that hw_ptr/appl_ptrs remain valid. This is expected by ALSA core as it resets the buffer state as part of prepare (see snd_pcm_do_prepare()). Fix the issue by forcing reconfiguration of the FW with STREAM_PCM_PARAMS in prepare(). Use combined logic to handle prepare and the existing flow to reprogram hw-params after system suspend. Without the fix, first call to pcm pointer() will return an invalid hw_ptr and application may immediately observe XRUN status, unless "start_threshold" SW parameter is set to maximum value by the application. Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190722141402.7194-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-17ASoC: SOF: Intel: hda: couple host and link DMA during FE hw_freeRanjani Sridharan
Host and link DMA are decoupled during FE hw_params. So, they must be coupled in hw_free if the link DMA channel is idle. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-30Merge branch 'asoc-5.2' into asoc-5.3Mark Brown
2019-05-28ASoC: SOF: pcm: remove warning - initialize workqueue on openPierre-Louis Bossart
If the SOF hw_params() fail, typically with an IPC error thrown by the firmware, the period_elapsed workqueue is not initialized, but we still cancel it in hw_free(), which results in a kernel warning. Move the initialization to the .open callback. Tested on Broadwell (Samus) and IceLake. Fixes: e2803e610ae ("ASoC: SOF: PCM: add period_elapsed work to fix race condition in interrupt context") GitHub issue: https://github.com/thesofproject/linux/issues/932 Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-28ASoC: SOF: pcm: clear hw_params_upon_resume flag correctlyLibin Yang
sof_pcm_hw_params() can only be called once to setup the FW hw_params. So after calling sof_pcm_hw_params(), hw_params_upon_resume flag must be cleared to avoid multiple invoking sof_pcm_hw_params() by prepare. For example, after resume, there is an xrun happened, prepare() will be called. As the hw_params_upon_resume flag is not cleared, sof_pcm_hw_params() will be called and this will cause IPC timeout. This patch fixes such issues. Fixes: 868bd00f495 ("ASoC: SOF: Add PCM operations support") Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Libin Yang <libin.yang@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-13ASoC: SOF: pcm: remove runtime PM calls during pcm open/closeRanjani Sridharan
pm_runtime_get_sync()/pm_runtime_put_autosuspend() calls are already invoked by the ASoC core in soc_pcm_open() and soc_pcm_close(). So the SOF component driver does not need to call them again. Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-03ASoC: SOF: PCM: add period_elapsed work to fix race condition in interrupt ↵Keyon Jie
context The IPC implementation in SOF requires sending IPCs serially: we should not send a new IPC command to the firmware before we get an ACK (or time out) from firmware, and the IRQ processing is complete. snd_pcm_period_elapsed() can be called in interrupt context before IRQ_HANDLED is returned. When the PCM is done draining, a STOP IPC will then be sent, which breaks the expectation that IPCs are handled serially and leads to IPC timeouts. This patch adds a workqueue to defer the call to snd_pcm_elapsed() after the IRQ is handled. Signed-off-by: Keyon Jie <yang.jie@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-04-28ASoC: SOF: Add PCM operations supportLiam Girdwood
Add support for exposing PCMs to userspace. PCMs are defined by topology and the operations in this patch map to SOF IPC calls. The .get_module_upon_open field is set to allow for module load/unload tests. There is no risk of the sof-pci/acpi-dev module being removed while the platform components are in use. This may need to be revisited when DT platforms are supported. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
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