summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2019-12-18ASoC: Intel: cml_rt1011_rt5682: fix codec_conf by removing legacy stylePierre-Louis Bossart
Now that the legacy style is removed, we have to use the new macros for the codec configuration. This change was missed in the initial series. Reported-by: Randy Dunlap <rdunlap@infradead.org> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Fixes: ee8f537fd8b71c ("ASoC: soc-core: remove legacy style of codec_conf") Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/20191217165649.12091-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-18ASoC: SOF: Intel: hda: hda-dai: fix oops on hda_link .hw_freePierre-Louis Bossart
When the PCM_PARAM IPC fails while configuring the FE, the kernel oopses in the HDaudio link DMA .hw_free operation. The root cause is a NULL dma_data since the BE .hw_params was never called by the SOC core. This error can also happen if the HDaudio link DMA configuration IPC fails in the BE .hw_params. This patches makes sure the dma_data is properly saved in .hw_params, and tested before being use in hw_free. GitHub issue: https://github.com/thesofproject/linux/issues/1417 Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-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/20191218000518.5830-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-18ASoC: SOF: fix fault at driver unload after failed probeKai Vehmanen
If sof_machine_check() fails during driver probe, the IPC state is not initialized and this will lead to a NULL dereference at driver unload. Example log is as follows: [ 1535.980630] sof-audio-pci 0000:00:1f.3: error: no matching ASoC machine driver found - aborting probe [ 1535.980631] sof-audio-pci 0000:00:1f.3: error: failed to get machine info -19 [ 1535.980632] sof-audio-pci 0000:00:1f.3: error: sof_probe_work failed err: -19 [ 1550.798373] BUG: kernel NULL pointer dereference, address: 0000000000000008 ... [ 1550.798393] Call Trace: [ 1550.798397] snd_sof_ipc_free+0x15/0x30 [snd_sof] [ 1550.798399] snd_sof_device_remove+0x29/0xa0 [snd_sof] [ 1550.798400] sof_pci_remove+0x10/0x30 [snd_sof_pci] 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/20191218000518.5830-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-17ASoC: compress: Add pm_runtime supportCezary Rojewski
For some devices, components need to be powered-up before stream startup sequence commences. Update soc_compr_open to provide such functionality. Based on soc_pcm_open. Adjust soc_compr_free accordingly to power down components once compress stream is closed. Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Link: https://lore.kernel.org/r/20191217095851.19629-7-cezary.rojewski@intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-17ASoC: intel: skylake: Remove superfluous bus opsTakashi Iwai
The bus_core_ops values set in skl driver are same as the default values, so we can drop it and pass NULL to snd_hdac_ext_bus_init() instead. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191212191747.19995-1-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: soc-core: remove legacy style of codec_confKuninori Morimoto
Now all driver is using snd_soc_dai_link_component for codec_conf. Let's remove legacy style Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/871rt959ic.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: ti: rx51: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/8736dp59ih.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: samsung: speyside: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/874ky559in.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: samsung: neo1973_wm8753: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/875zil59is.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: samsung: lowland: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/877e3159ix.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: samsung: bells: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/878snh59j1.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: mediatek: mt8183-da7219-max98357: use snd_soc_dai_link_component for ↵Kuninori Morimoto
codec_conf We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87a77x59j6.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: mediatek: mt8173-rt5650-rt5676: use snd_soc_dai_link_component for ↵Kuninori Morimoto
codec_conf We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87blsd59jb.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: mediatek: mt8173-rt5650-rt5514: use snd_soc_dai_link_component for ↵Kuninori Morimoto
codec_conf We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87d0ct59jg.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: intel: skl_nau88l25_ssm4567: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87eex959jm.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: intel: kbl_rt5663_rt5514_max98927: use snd_soc_dai_link_component for ↵Kuninori Morimoto
codec_conf We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87fthp59jr.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: intel: kbl_rt5663_max98927: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87h82559jw.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: intel: kbl_da7219_max98927: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87imml59k2.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: fsl: imx-audmix: use snd_soc_dai_link_component for codec_confKuninori Morimoto
We can use snd_soc_dai_link_component to specify codec_conf. Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87k17159kb.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: soc-core: support snd_soc_dai_link_component for codec_confKuninori Morimoto
To find codec_conf component, it is using dev_name, of_node. But, we already has this kind of finding component method by snd_soc_dai_link_component, and snd_soc_is_matching_component(). We shouldn't have duplicate implementation to do same things. This patch adds snd_soc_dai_link_component support to find codec_conf component. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87lfrh59kj.wl-kuninori.morimoto.gx@renesas.com Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-16ASoC: wm8962: fix lambda valueShengjiu Wang
According to user manual, it is required that FLL_LAMBDA > 0 in all cases (Integer and Franctional modes). Fixes: 9a76f1ff6e29 ("ASoC: Add initial WM8962 CODEC driver") Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/1576065442-19763-1-git-send-email-shengjiu.wang@nxp.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>
2019-12-12ASoC: mediatek: 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, as well as the superfluous snd_pcm_lib_preallocate_free_for_all() call. As of the result, hw_free and pcm_destruct ops became empty and got removed. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191211172019.23206-1-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-12soundwire: intel: add clock stop quirksPierre-Louis Bossart
Due to power rail dependencies, the SoundWire Master driver cannot make decisions on its own when entering pm runtime suspend. Add quirk mask for each link, so that the SOF parent driver can inform the SoundWire master driver of the desired behavior: a) leave clock on b) power-off instead of clock stop c) power-off if all devices cannot generate wakes d) force bus reset on clock restart Note that for now the interface with the SOF driver relies on a single mask for all links. If needed, the interface might be modified at a later point to provide more freedom. The code at the lower level does not assume any commonality between links. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-12-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: intel: add mutex for shared SHIM register accessPierre-Louis Bossart
Some of the Intel SoundWire SHIM registers contain fields for different links. Without protection, the master drivers for the different links will access these shared registers, leading to invalid configurations and timeouts (specifically when changing CPA/SPA power-related registers and polling for the changes to be applied). A mutex is added to make sure all rmw access to those registers are serialized. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-11-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: intel: add prototype for WAKEEN interrupt processingRander Wang
In ClockStop mode, the PCI device will be notified of a wake, which will be handled from an interrupt thread. Signed-off-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-10-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: intel: add link_list to handle interrupts with a single threadBard Liao
In MSI mode, the use of separate handlers and threads for the Intel IPC, stream and SoundWire shared interrupt leads to timeouts and lost interrupts. The solution is to merge all interrupt handling across all links with a single thread function. The use of a linked list enables this thread function to walk through all contexts and figure out which link needs attention. Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-9-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: intel: update headers for interruptsBard Liao
The existing use of 6 handlers is problematic in MSI mode. Update headers so that all shared interrupts can be handled with a single handler. Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-8-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: intel: update stream callbacks for hwparams/free stream operationsRander Wang
The SoundWire DAIs for Intel platform are created in drivers/soundwire/intel.c, while the communication with the Intel DSP is all controlled in soc/sof/intel When the DAI status changes, a callback is used to bridge the gap between the two subsystems. The naming of the existing 'config_stream' callback does not map well with any of ALSA/ASoC concepts. This patch renames it as 'params_stream' to be more self-explanatory. A new 'free_stream' callback is added in case any resources allocated in the 'params_stream' stage need to be released. In the SOF implementation, this is used in the hw_free case to release the DMA channels over IPC. These two callbacks now rely on structures which expose the link_id and alh_stream_id (required by the firmware IPC), instead of a list of parameters. The 'void *' definitions are changed to use explicit types, as suggested on alsa-devel during earlier reviews. Signed-off-by: Rander Wang <rander.wang@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: intel: update interfaces between ASoC and SoundWirePierre-Louis Bossart
The current interfaces between ASoC and SoundWire are limited by the platform_device infrastructure to an init() and exit() (mapped to the platform driver.probe and .remove) To help with the platform detection, machine driver selection and management of power dependencies between DSP and SoundWire IP, the ASoC side requires: a) an ACPI scan helper, to report if any devices are exposed in the DSDT tables, and if any links are disabled by the BIOS. b) a probe helper that allocates the resources without actually starting the bus. c) a startup helper which does start the bus when all power dependencies are settled. d) an exit helper to free all resources e) an interrupt_enable/disable helper, typically invoked after the startup helper but also used in suspend routines. This patch moves all required interfaces to sdw_intel.h, mainly to allow SoundWire and ASoC parts to be merged separately once the header files are shared between trees. To avoid compilation issues, the conflicts in intel_init.c are blindly removed. This would in theory prevent the code from working, but since there are no users of the Intel Soundwire driver this has no impact. Functionality will be restored when the removal of platform devices is complete. Support for SoundWire + SOF builds will only be provided once all the required pieces are upstream. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-6-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: sdw_slave: track unattach_request to handle all init sequencesPierre-Louis Bossart
The Slave device initialization can be split in 4 different cases: 1. Master-initiated hardware reset, system suspend-resume and pm_runtime based on clock-stop mode1. To avoid timeouts and a bad audio experience, the Slave device resume operations need to wait for the Slave device to be re-enumerated and its settings restored. 2. Exit from clock-stop mode0. In this case, the Slave device is required to remain enumerated and its context preserved while the clock is stopped, so no re-initialization or wait_for_completion() is necessary. 3. Slave-initiated pm_runtime D3 transition. With the parent child relationship, it is possible that a Slave device becomes 'suspended' while its parent is still 'active' with the bus clock still toggling. In this case, during the pm_runtime resume operation, there is no need to wait for any settings to be restored. 4. Slave reset (sync loss or implementation-defined). In that case the bus remains operational and the Slave device will be re-initialized when it becomes ATTACHED again. In previous patches, we suggested the use of wait_for_completion() to deal with the case #1, but case #2 and #3 do not need any wait. To account for those differences, this patch adds an unattach_request field. The field is explicitly set by the Master for the case #1, and if non-zero the Slave device shall wait on resume. In all other cases, the Slave resume operations can proceed without wait. The only request tracked so far is Master HardReset, but the request is declared as a bit mask for future extensions (if needed). The definition for this value is added in bus.h and does not need to be exposed in sdw.h Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-5-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: sdw_slave: add initialization_complete definitionPierre-Louis Bossart
Slave drivers may have different ways of handling their settings, with or without regmap. During the integration of codec drivers, done in partnership between Intel and Realtek, it became desirable to implement a predictable order between low-level initializations performed in .update_status() (invoked by an interrupt thread) and the settings restored in the resume steps (invoked by the PM core). This patch builds on the previous solution to wait for the Slave device to be fully enumerated. The complete() in this case is signaled not before the .update_status() is called, but after .update_status() returns. Without this patch, the settings were not properly restored, leading to timing-dependent 'no sound after resume' or 'no headset detected after resume' bug reports. Depending on how initialization is handled, a Slave device driver may wait for enumeration_complete, or for initialization_complete, both are valid synchronization points. They are initialized at the same time, they only differ on when complete() is invoked. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: sdw_slave: add enumeration_complete structurePierre-Louis Bossart
When the Master starts the bus (be it during the initial boot or system resume), it usually performs a HardReset to make sure electrical levels are correct, then enables the control channel. While the PM framework guarantees that the Slave devices will only become 'active' once the Master completes the bus initialization, there is still a risk of a race condition: the Slave enumeration is handled in a separate interrupt thread triggered by hardware status changes, so the Slave device may not be ready to accept commands when the Slave driver tries to access the registers and restore settings in its resume or pm_runtime_resume callbacks. In those cases, any read/write commands from/to the Slave device will result in a timeout. This patch adds an enumeration_complete structure. When the bus is goes through a HardReset sequence and restarted, the Slave will be marked as UNATTACHED, which will result in a call to init_completion(). When the Slave reports its presence during PING frames as a non-zero Device, the Master hardware will issue an interrupt and the bus driver will invoke complete(). The order between init_completion()/complete() is predictable since this is a Master-initiated transition. The Slave driver may use wait_for_completion() in its resume callback. When regmap is used, the Slave driver will typically set its regmap in cache-only mode on suspend, then on resume block on wait_for_completion(&enumeration_complete) to guarantee it is safe to start read/write transactions. It may then exit the cache-only mode and use a regmap_sync to restore settings. All these steps are optional, their use completely depends on the Slave device capabilities and how the Slave driver is implemented. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-12soundwire: sdw_slave: add probe_complete structure and new fieldsPierre-Louis Bossart
When a Slave device becomes synchronized with the bus, it may report its presence in PING frames, as well as optionally asserting an in-band PREQ signal. The bus driver will detect a new Device0, start the enumeration process and assign it a non-zero device number. The SoundWire enumeration provides an arbitration to deal with multiple Slaves reporting ATTACHED at the same time. The bus driver will also invoke the driver .probe() callback associated with this device. The probe() depends on the Linux device core, which handles the match operations and may result in modules being loaded. Once the non-zero device number is programmed, the Slave will report its new status in PING frames and the Master hardware will typically report this status change with an interrupt. At this point, the .update_status() callback of the codec driver will be invoked (usually from an interrupt thread or workqueue scheduled from the interrupt thread). The first race condition which can happen is between the .probe(), which allocates the resources, and .update_status() where initializations are typically handled. The .probe() is only called once during the initial boot, while .update_status() will be called for every bus hardware reset and if the Slave device loses synchronization (an unlikely event but with non-zero probability). The time difference between the end of the enumeration process and a change of status reported by the hardware may be as small as one SoundWire PING frame. The scheduling of the interrupt thread, which invokes .update_status() is not deterministic, but can be small enough to create a race condition. With a 48 kHz frame rate and ideal scheduling cases, the .probe() may be pre-empted within double-digit microseconds. Since there is no guarantee that the .probe() completes by the time .update_status() is invoked as a result of an interrupt, it's not unusual for the .update_status() to rely on data structures that have not been allocated yet, leading to kernel oopses. This patch adds a probe_complete utility, which is used in the sdw_update_slave_status() routine. The codec driver does not need to do anything and can safely assume all resources are allocated in its update_status() callback. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191212014507.28050-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-12-11ASoC: Drop snd_soc_pcm_lib_ioctl()Takashi Iwai
Now all snd_soc_pcm_lib_ioctl() calls were dropped, and it became superfluous. Let's kill it. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210145406.21419-24-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: uniphier: Drop superfluous ioctl PCM opsTakashi Iwai
ASoC PCM core deals the empty ioctl field now as default. Let's kill the redundant lines. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210145406.21419-20-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: sh: 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/20191210145406.21419-15-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: uniphier: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_params and hw_free callbacks became superfluous and got dropped, as well as the pcm_destruct callback just containing the superfluous snd_pcm_lib_preallocate_free_for_all() call. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-15-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: siu_pcm: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_params and hw_free callbacks became superfluous (the rest were only debug prints) and got dropped. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-10-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: fsi: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_params and hw_free callbacks became superfluous and got dropped. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-8-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: intel: skylake: 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. The pcm_construct ops contains only the superfluous call of snd_pcm_lib_preallocate_free_for_all(), so dropped, too. Cc: Cezary Rojewski <cezary.rojewski@intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com> Cc: Jie Yang <yang.jie@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-24-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: intel: haswell: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_free callback became superfluous and got dropped. Cc: Cezary Rojewski <cezary.rojewski@intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com> Cc: Jie Yang <yang.jie@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-23-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: intel: baytrail: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_free callback became superfluous and got dropped. Cc: Cezary Rojewski <cezary.rojewski@intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com> Cc: Jie Yang <yang.jie@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-22-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: intel: atom: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_params and hw_free callbacks became superfluous and got dropped. Cc: Cezary Rojewski <cezary.rojewski@intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Liam Girdwood <liam.r.girdwood@linux.intel.com> Cc: Jie Yang <yang.jie@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-21-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: rt5677-spi: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The superfluous snd_pcm_lib_malloc_pages() and snd_pcm_lib_free_pages() calls are dropped. Cc: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-20-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: rt5514-spi: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The superfluous snd_pcm_lib_malloc_pages() and snd_pcm_lib_free_pages() calls are dropped. Cc: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-19-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: cros_ec_codec: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The superfluous snd_pcm_lib_malloc_pages() and snd_pcm_lib_free_pages() calls are dropped. Cc: Cheng-Yi Chiang <cychiang@chromium.org> Cc: Benson Leung <bleung@chromium.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-18-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: xtensa: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The superfluous snd_pcm_lib_malloc_pages() and snd_pcm_lib_free_pages() calls are dropped. Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-17-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: xilinx: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_free callback became superfluous and got dropped. Cc: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-16-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-11ASoC: txx9: Use managed buffer allocationTakashi Iwai
Clean up the driver with the new managed buffer allocation API. The hw_free callback became superfluous and got dropped. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20191210142614.19405-14-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>