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2023-02-24Merge tag 'soundwire-6.3-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire Pull soundwire updates from Vinod Koul: "This is a small update which features a bit of core changes and driver updates in Intel and cadence driver. Core: - sdw_transfer_defer() API change to drop an argument - Reset page address rework - Export sdw_nwrite_no_pm and sdw_nread_no_pm APIs Drivers: - Cadence and related intel driver updates for FIFO handling and low level msg transfers" * tag 'soundwire-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: soundwire: cadence: further simplify low-level xfer_msg_defer() callback soundwire: cadence: use directly bus sdw_defer structure soundwire: bus: remove sdw_defer argument in sdw_transfer_defer() soundwire: stream: use consistent pattern for freeing buffers soundwire: bus: Remove unused reset_page_addr() callback soundwire: bus: Don't zero page registers after every transaction soundwire: bus_type: Avoid lockdep assert in sdw_drv_probe() soundwire: stream: Move remaining register accesses over to no_pm soundwire: debugfs: Switch to sdw_read_no_pm soundwire: Provide build stubs for common functions soundwire: bus: export sdw_nwrite_no_pm and sdw_nread_no_pm functions soundwire: cadence: remove unused sdw_cdns_master_ops declaration soundwire: enable optional clock registers for SoundWire 1.2 devices ASoC/soundwire: remove is_sdca boolean property soundwire: cadence: Drain the RX FIFO after an IO timeout soundwire: cadence: Remove wasted space in response_buf soundwire: cadence: Don't overflow the command FIFOs soundwire: intel: remove DAI startup/shutdown
2023-02-24Merge tag 'driver-core-6.3-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the large set of driver core changes for 6.3-rc1. There's a lot of changes this development cycle, most of the work falls into two different categories: - fw_devlink fixes and updates. This has gone through numerous review cycles and lots of review and testing by lots of different devices. Hopefully all should be good now, and Saravana will be keeping a watch for any potential regression on odd embedded systems. - driver core changes to work to make struct bus_type able to be moved into read-only memory (i.e. const) The recent work with Rust has pointed out a number of areas in the driver core where we are passing around and working with structures that really do not have to be dynamic at all, and they should be able to be read-only making things safer overall. This is the contuation of that work (started last release with kobject changes) in moving struct bus_type to be constant. We didn't quite make it for this release, but the remaining patches will be finished up for the release after this one, but the groundwork has been laid for this effort. Other than that we have in here: - debugfs memory leak fixes in some subsystems - error path cleanups and fixes for some never-able-to-be-hit codepaths. - cacheinfo rework and fixes - Other tiny fixes, full details are in the shortlog All of these have been in linux-next for a while with no reported problems" [ Geert Uytterhoeven points out that that last sentence isn't true, and that there's a pending report that has a fix that is queued up - Linus ] * tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (124 commits) debugfs: drop inline constant formatting for ERR_PTR(-ERROR) OPP: fix error checking in opp_migrate_dentry() debugfs: update comment of debugfs_rename() i3c: fix device.h kernel-doc warnings dma-mapping: no need to pass a bus_type into get_arch_dma_ops() driver core: class: move EXPORT_SYMBOL_GPL() lines to the correct place Revert "driver core: add error handling for devtmpfs_create_node()" Revert "devtmpfs: add debug info to handle()" Revert "devtmpfs: remove return value of devtmpfs_delete_node()" driver core: cpu: don't hand-override the uevent bus_type callback. devtmpfs: remove return value of devtmpfs_delete_node() devtmpfs: add debug info to handle() driver core: add error handling for devtmpfs_create_node() driver core: bus: update my copyright notice driver core: bus: add bus_get_dev_root() function driver core: bus: constify bus_unregister() driver core: bus: constify some internal functions driver core: bus: constify bus_get_kset() driver core: bus: constify bus_register/unregister_notifier() driver core: remove private pointer from struct bus_type ...
2023-01-31soundwire: cadence: further simplify low-level xfer_msg_defer() callbackPierre-Louis Bossart
The message pointer is already stored in the bus->defer structure, not need to pass it as an argument. Suggested-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20230119073211.85979-5-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-31soundwire: cadence: use directly bus sdw_defer structurePierre-Louis Bossart
Copying the bus sdw_defer structure into the Cadence internals leads to using stale pointers and kernel oopses on errors. It's just simpler and safer to use the bus sdw_defer structure directly. Link: https://github.com/thesofproject/linux/issues/4056 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20230119073211.85979-4-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-31soundwire: stream: Add specific prep/deprep commands to port_prep callbackStefan Binding
Currently, port_prep callback only has commands for PRE_PREP, PREP, and POST_PREP, which doesn't directly say whether this is for a prepare or deprepare call. Extend the command list enum to say whether the call is for prepare or deprepare aswell. Also remove SDW_OPS_PORT_PREP from sdw_port_prep_ops as this is unused, and update this enum to be simpler and more consistent with enum sdw_clk_stop_type. Note: Currently, the only users of SDW_OPS_PORT_POST_PREP are codec drivers sound/soc/codecs/wsa881x.c and sound/soc/codecs/wsa883x.c, both of which seem to assume that POST_PREP only occurs after a prepare, even though it would also have occurred after a deprepare. Since it doesn't make sense to mark the port prepared after a deprepare, changing the enum to separate PORT_DEPREP from PORT_PREP should make the check for PORT_PREP in those drivers be more logical. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20230127165111.3010960-2-sbinding@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
2023-01-31soundwire: bus: Remove unused reset_page_addr() callbackRichard Fitzgerald
A previous patch removed unnecessary zeroing of the page registers after a paged transaction, so now the reset_page_addr callback is unused and can be removed. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20230123164949.245898-3-rf@opensource.cirrus.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-27driver core: make struct device_type.uevent() take a const *Greg Kroah-Hartman
The uevent() callback in struct device_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Andreas Noever <andreas.noever@gmail.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Chaitanya Kulkarni <kch@nvidia.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jilin Yuan <yuanjilin@cdjrlc.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Len Brown <lenb@kernel.org> Cc: Mark Gross <markgross@kernel.org> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Maximilian Luz <luzmaximilian@gmail.com> Cc: Michael Jamet <michael.jamet@intel.com> Cc: Ming Lei <ming.lei@redhat.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: Sean Young <sean@mess.org> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Won Chung <wonchung@google.com> Cc: Yehezkel Bernat <YehezkelShB@gmail.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> # for Thunderbolt Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Wolfram Sang <wsa@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230111113018.459199-6-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-09soundwire: Provide build stubs for common functionsCharles Keepax
Provide stub functions when CONFIG_SOUNDWIRE is not set for functions that are quite likely to be used from common code on devices supporting multiple control buses. Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20221125142028.1118618-3-ckeepax@opensource.cirrus.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-09soundwire: bus: export sdw_nwrite_no_pm and sdw_nread_no_pm functionsSimon Trimmer
The commit 167790abb90f ("soundwire: export sdw_write/read_no_pm functions") exposed the single byte no_pm versions of the IO functions that can be used without touching PM, export the multi byte no_pm versions for the same reason. Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20221125142028.1118618-2-ckeepax@opensource.cirrus.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-09soundwire: enable optional clock registers for SoundWire 1.2 devicesPierre-Louis Bossart
The bus supports the mandatory clock registers for SDCA devices, these registers can also be optionally supported by SoundWire 1.2 devices that don't follow the SDCA class specification. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20221118025807.534863-3-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-01-09ASoC/soundwire: remove is_sdca boolean propertyPierre-Louis Bossart
The Device_ID registers already tell us if a device supports the SDCA specification or not, in hindsight we never needed a property when the information is reported by both hardware and ACPI. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221118025807.534863-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-12-19Merge tag 'soundwire-6.2-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire Pull soundwire updates from Vinod Koul: "This include bunch of Intel driver code reorganization and support for qcom v1.7.0 controller: - intel: reorganization of hw_ops callbacks, splitting files etc - qcom: support for v1.7.0 qcom controllers" * tag 'soundwire-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: soundwire: intel: split auxdevice to different file soundwire: intel: add in-band wake callbacks in hw_ops soundwire: intel: add link power management callbacks in hw_ops soundwire: intel: add bus management callbacks in hw_ops soundwire: intel: add register_dai callback in hw_ops soundwire: intel: add debugfs callbacks in hw_ops soundwire: intel: start using hw_ops dt-bindings: soundwire: Convert text bindings to DT Schema soundwire: cadence: use dai_runtime_array instead of dma_data soundwire: cadence: rename sdw_cdns_dai_dma_data as sdw_cdns_dai_runtime soundwire: qcom: add support for v1.7 Soundwire Controller dt-bindings: soundwire: qcom: add v1.7.0 support soundwire: qcom: make reset optional for v1.6 controller soundwire: qcom: remove unused SWRM_SPECIAL_CMD_ID soundwire: dmi-quirks: add quirk variant for LAPBC710 NUC15
2022-11-23soundwire: intel_init: remove sdw_intel_enable_irq()Pierre-Louis Bossart
The functionality is implemented with per-chip callbacks, there are no users of this symbol, remove the code. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20221111042653.45520-7-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-11-23soundwire: intel: add in-band wake callbacks in hw_opsPierre-Louis Bossart
No functionality change, only add indirection for in-band wake management helpers. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221111013135.38289-7-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-11-23soundwire: intel: add link power management callbacks in hw_opsPierre-Louis Bossart
No functionality change, only add indirection for link power management helpers. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221111013135.38289-6-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-11-23soundwire: intel: add bus management callbacks in hw_opsPierre-Louis Bossart
No functionality change, only add indirection for bus management helpers. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221111013135.38289-5-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-11-23soundwire: intel: add register_dai callback in hw_opsPierre-Louis Bossart
No functionality change, only add indirection for DAI registration helper. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221111013135.38289-4-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-11-23soundwire: intel: add debugfs callbacks in hw_opsPierre-Louis Bossart
No functionality change, only add indirection for debugfs helpers. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221111013135.38289-3-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-11-23soundwire: intel: start using hw_opsPierre-Louis Bossart
Before introducing new hardware with completely different register spaces and programming sequences, we need to abstract some of the existing routines in hw_ops that will be platform-specific. For now we only use the 'cnl' ops - after the first Intel platform with SoundWire capabilities. Rather than one big intrusive patch, hw_ops are introduced in this patch so show the dependencies between drivers. Follow-up patches will introduce callbacks for debugfs, power and bus management. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20221111013135.38289-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-10-07Merge tag 'soundwire-6.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire Pull soundwire updates from Vinod Koul: "Updates for Intel, Cadence and Qualcomm drivers: - another round of Intel driver cleanup to prepare for future code reorg which is expected in next cycle (Pierre-Louis Bossart) - bus unattach notifications processing during re-enumeration along with Cadence driver updates for this (Richard Fitzgerald) - Qualcomm driver updates to handle device0 status (Srinivas Kandagatla)" * tag 'soundwire-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (42 commits) soundwire: intel: add helper to stop bus soundwire: intel: introduce helpers to start bus soundwire: intel: introduce intel_shim_check_wake() helper soundwire: intel: simplify read ops assignment soundwire: intel: remove intel_init() wrapper soundwire: intel: move shim initialization before power up/down soundwire: intel: remove clock_stop parameter in intel_shim_init() soundwire: intel: move all PDI initialization under intel_register_dai() soundwire: intel: move DAI registration and debugfs init earlier soundwire: intel: simplify flow and use devm_ for DAI registration soundwire: intel: fix error handling on dai registration issues soundwire: cadence: Simplify error paths in cdns_xfer_msg() soundwire: cadence: Fix error check in cdns_xfer_msg() soundwire: cadence: Write to correct address for each FIFO chunk soundwire: bus: Fix wrong port number in sdw_handle_slave_alerts() soundwire: qcom: do not send status of device 0 during alert soundwire: qcom: update status from device id 1 soundwire: cadence: Don't overwrite msg->buf during write commands soundwire: bus: Don't exit early if no device IDs were programmed soundwire: cadence: Fix lost ATTACHED interrupts when enumerating ...
2022-09-01soundwire: intel: cleanup WakeEnable and WakeStatusPierre-Louis Bossart
Regroup offset and bitfield definitions. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-12-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: cleanup AC Timing ControlPierre-Louis Bossart
Regroup offset and bitfield definitions Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-11-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: cleanup IO controlPierre-Louis Bossart
Regroup offset and bitfield definitions. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-10-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: cleanup PCM Stream channel map and channel countPierre-Louis Bossart
Regroup offset and bitfield definitions. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-9-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: cleanup PCM stream capabilitiesPierre-Louis Bossart
Regroup offset and bitfields Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-8-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: add comment for control stream cap/chmapPierre-Louis Bossart
add comment and newline to mark out control stream capabilities and chmap. These registers are unused by the driver, only dumped in debugfs. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-7-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: remove unused PDM capabilitiesPierre-Louis Bossart
We removed PDM support a long time ago but kept the definitions. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-6-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: cleanup SHIM SYNCPierre-Louis Bossart
Regroup offset and bitfields, no functionality change Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-5-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: remove IPPTR unused definitionPierre-Louis Bossart
This read-only register only defines an offset which is known already and a version which isn't used. Remove unused definition. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-4-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: regroup definitions for LCTLPierre-Louis Bossart
No functionality change, just regroup offset and bitfield definitions. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-3-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-01soundwire: intel: cleanup definition of LCOUNTPierre-Louis Bossart
Add definition in header file rather than hidden in code. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823053846.2684635-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-08-30soundwire: bus: allow device number to be unique at system levelPierre-Louis Bossart
The SoundWire specification allows the device number to be allocated at will. When a system includes multiple SoundWire links, the device number scope is limited to the link to which the device is attached. However, for integration/debug it can be convenient to have a unique device number across the system. This patch adds a 'dev_num_ida_min' field at the bus level, which when set will be used to allocate an IDA. The allocation happens when a hardware device reports as ATTACHED. If any error happens during the enumeration, the allocated IDA is not freed - the device number will be reused if/when the device re-joins the bus. The IDA is only freed when the Linux device is unregistered. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20220823045004.2670658-3-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-08-17soundwire: add sdw_show_ping_status() helperPierre-Louis Bossart
This helper provides an optional delay parameter to wait for devices to resync in case of errors, and checks that devices are indeed attached on the bus. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20220714011043.46059-4-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-08-17soundwire: add read_ping_status helper definition in manager opsPierre-Louis Bossart
The existing manager ops provide callbacks to transfer read/write commands, but don't allow for direct access to PING status register. This is accessible in all existing IP, and would help diagnose timeouts or resume issues by reporting the 'true' status instead of the internal status reported by the IP. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20220714011043.46059-2-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-08-06Merge tag 'sound-6.0-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "As the diffstat shows, we've had lots of developments in a wide range at this time; the majority of changes are about ASoC, including subsystem-wide cleanups, continued SOF / Intel updates and a bunch of new drivers (as usual), while there have been some significant (but almost invisible) improvements in ALSA core side, too. Below are some highlights: Core: - Faster lookups of control elements with Xarray; normal user won't notice, but on the devices with tons of control elements, it can be visibly faster - Support for input validation for controls; this will harden for badly written drivers in general with a slight overhead - Deferred async signal handling for working around the potential deadlocks - Cleanup / refactoring raw MIDI locking code ASoC: - Restructing of the set_fmt() callbacks for making things clearer in situations like CODEC to CODEC links - Clean up and modernizing the DAI naming scheme setups - Merge of more of the Intel AVS driver stack, including some board integrations - New version 4 mechanism for communication with SOF DSPs - Suppoort for dynamically selecting the PLL to use at runtime on i.MX platforms - Improvements for CODEC to CODEC support in the generic cards - Support for AMD Jadeite and various machines, AMD RPL, Intel MetorLake DSPs, Mediatek MT8186 DSPs and MT6366, nVidia Tegra MDDRC, OPE and PEQ, NXP TFA9890, Qualcomm SDM845, WCD9335 and WAS883x, and Texas Instruments TAS2780 HD- and USB-audio: - Continued improvement for CS35L41 (sub)codec support - More quirks for various devices (HP, Lenovo, Dell, Clevo)" * tag 'sound-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (778 commits) ALSA: hda/realtek: Add quirk for HP Spectre x360 15-eb0xxx ALSA: line6: Replace sprintf() with sysfs_emit() ALSA: hda: Replace sprintf() with sysfs_emit() ALSA: pcm: Replace sprintf() with sysfs_emit() ALSA: core: Replace scnprintf() with sysfs_emit() ALSA: control-led: Replace sprintf() with sysfs_emit() ALSA: aoa: Replace sprintf() with sysfs_emit() ALSA: ac97: Replace sprintf() with sysfs_emit() ALSA: hda/realtek: Add quirk for Clevo NV45PZ ALSA: hda/realtek: Add quirk for Lenovo Yoga9 14IAP7 ALSA: control: Use deferred fasync helper ALSA: pcm: Use deferred fasync helper ALSA: timer: Use deferred fasync helper ALSA: core: Add async signal helpers ASoC: q6asm: use kcalloc() instead of kzalloc() ACPI: scan: Add CLSA0101 Laptop Support ALSA: hda: cs35l41: Support CLSA0101 ALSA: hda: cs35l41: Use the CS35L41 HDA internal define ASoC: dt-bindings: use spi-peripheral-props.yaml ASoC: codecs: va-macro: use fsgen as clock ...
2022-07-13soundwire: Intel: add trigger callbackBard Liao
When a pipeline is split into FE and BE parts, the BE pipeline may need to be triggered separately in the BE trigger op. So add the trigger callback in the link_res ops that will be invoked during BE DAI trigger. Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20220708061312.25878-2-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-07-06soundwire: peripheral: remove useless ops pointerPierre-Louis Bossart
Now that we are using the ops structure directly from the driver, there are no users left of this ops pointer. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://lore.kernel.org/r/20220621225641.221170-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-07-06soundwire: revisit driver bind/unbind and callbacksPierre-Louis Bossart
In the SoundWire probe, we store a pointer from the driver ops into the 'slave' structure. This can lead to kernel oopses when unbinding codec drivers, e.g. with the following sequence to remove machine driver and codec driver. /sbin/modprobe -r snd_soc_sof_sdw /sbin/modprobe -r snd_soc_rt711 The full details can be found in the BugLink below, for reference the two following examples show different cases of driver ops/callbacks being invoked after the driver .remove(). kernel: BUG: kernel NULL pointer dereference, address: 0000000000000150 kernel: Workqueue: events cdns_update_slave_status_work [soundwire_cadence] kernel: RIP: 0010:mutex_lock+0x19/0x30 kernel: Call Trace: kernel: ? sdw_handle_slave_status+0x426/0xe00 [soundwire_bus 94ff184bf398570c3f8ff7efe9e32529f532e4ae] kernel: ? newidle_balance+0x26a/0x400 kernel: ? cdns_update_slave_status_work+0x1e9/0x200 [soundwire_cadence 1bcf98eebe5ba9833cd433323769ac923c9c6f82] kernel: BUG: unable to handle page fault for address: ffffffffc07654c8 kernel: Workqueue: pm pm_runtime_work kernel: RIP: 0010:sdw_bus_prep_clk_stop+0x6f/0x160 [soundwire_bus] kernel: Call Trace: kernel: <TASK> kernel: sdw_cdns_clock_stop+0xb5/0x1b0 [soundwire_cadence 1bcf98eebe5ba9833cd433323769ac923c9c6f82] kernel: intel_suspend_runtime+0x5f/0x120 [soundwire_intel aca858f7c87048d3152a4a41bb68abb9b663a1dd] kernel: ? dpm_sysfs_remove+0x60/0x60 This was not detected earlier in Intel tests since the tests first remove the parent PCI device and shut down the bus. The sequence above is a corner case which keeps the bus operational but without a driver bound. While trying to solve this kernel oopses, it became clear that the existing SoundWire bus does not deal well with the unbind case. Commit 528be501b7d4a ("soundwire: sdw_slave: add probe_complete structure and new fields") added a 'probed' status variable and a 'probe_complete' struct completion. This status is however not reset on remove and likewise the 'probe complete' is not re-initialized, so the bind/unbind/bind test cases would fail. The timeout used before the 'update_status' callback was also a bad idea in hindsight, there should really be no timing assumption as to if and when a driver is bound to a device. An initial draft was based on device_lock() and device_unlock() was tested. This proved too complicated, with deadlocks created during the suspend-resume sequences, which also use the same device_lock/unlock() as the bind/unbind sequences. On a CometLake device, a bad DSDT/BIOS caused spurious resumes and the use of device_lock() caused hangs during suspend. After multiple weeks or testing and painful reverse-engineering of deadlocks on different devices, we looked for alternatives that did not interfere with the device core. A bus notifier was used successfully to keep track of DRIVER_BOUND and DRIVER_UNBIND events. This solved the bind-unbind-bind case in tests, but it can still be defeated with a theoretical corner case where the memory is freed by a .remove while the callback is in use. The notifier only helps make sure the driver callbacks are valid, but not that the memory allocated in probe remains valid while the callbacks are invoked. This patch suggests the introduction of a new 'sdw_dev_lock' mutex protecting probe/remove and all driver callbacks. Since this mutex is 'local' to SoundWire only, it does not interfere with existing locks and does not create deadlocks. In addition, this patch removes the 'probe_complete' completion, instead we directly invoke the 'update_status' from the probe routine. That removes any sort of timing dependency and a much better support for the device/driver model, the driver could be bound before the bus started, or eons after the bus started and the hardware would be properly initialized in all cases. BugLink: https://github.com/thesofproject/linux/issues/3531 Fixes: 56d4fe31af77 ("soundwire: Add MIPI DisCo property helpers") Fixes: 528be501b7d4a ("soundwire: sdw_slave: add probe_complete structure and new fields") Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://lore.kernel.org/r/20220621225641.221170-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-06-15ASoC: SOF: Intel: Add support for MeteorLake (MTL)Bard Liao
Add platform abstraction for the Meteor Lake platform. This platform has significant differences compared to the TGL/ADL generation: it relies on new hardware using the code name 'ACE' and only supports the INTEL_IPC4 protocol and firmware architecture based on the Zephyr RTOS Co-developed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Link: https://lore.kernel.org/r/20220615084348.3489-3-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-12-24ASoC/soundwire: intel: simplify callbacks for params/hw_freePierre-Louis Bossart
We don't really need to pass a substream to the callback, we only need the direction. No functionality change, only simplification to enable improve suspend with paused streams. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20211224021034.26635-3-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-09-01Merge tag 'sound-5.15-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "There are a few intensive changes in ALSA core side at this time that helped with significant code reduction. Meanwhile we keep getting new stuff, so the total size still grows... Anyway, the below are some highlights in this development cycle. ALSA core: - New helpers to manage page allocations and card object with devres - Refactoring for memory allocation with wc-pages - A new PCM hardware flag SNDRV_PCM_INFO_EXPLICIT_SYNC for controlling the explicit sync of the stream control; it'll be used for ASoC SOF and non-coherent memory in future ASoC: - Lots of cleanups and improvements to the Intel drivers, including some new systems support - New support for AMD Vangoh, CUI CMM-4030D-261, Mediatek Mt8195, Renesas RZ/G2L Mediatek Mt8195, RealTek RT101P, Renesas RZ/G2L, Rockchip RK3568 S/PDIF USB-audio: - Re-organized the quirk handling and a new option quirk_flags - Fix for a regression in 5.14 code change for JACK - Quirks for Sony WALKMAN, Digidesign mbox HD-audio: - Enhanced support for CS8409 codec - More consistent shutdown behavior with the runtime PM - The model option can accept the PCI or codec SSID as an alias - Quirks for ASUS ROG, HP Spectre x360 Others: - Lots of code reduction in legacy drivers with devres helpers - FireWire MOTU 896HD support" * tag 'sound-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (421 commits) ASoC: Revert PCM trigger changes ALSA: usb-audio: Add lowlatency module option ALSA: hda/cs8409: Initialize Codec only in init fixup. ALSA: hda/cs8409: Ensure Type Detection is only run on startup when necessary ALSA: usb-audio: Work around for XRUN with low latency playback ALSA: pcm: fix divide error in snd_pcm_lib_ioctl ASoC: soc-pcm: test refcount before triggering ASoC: soc-pcm: protect BE dailink state changes in trigger ASoC: wcd9335: Disable irq on slave ports in the remove function ASoC: wcd9335: Fix a memory leak in the error handling path of the probe function ASoC: wcd9335: Fix a double irq free in the remove function ALSA: hda: Disable runtime resume at shutdown ASoC: rockchip: i2s: Add support for frame inversion ASoC: dt-bindings: rockchip: Add compatible strings for more SoCs ASoC: rockchip: i2s: Add compatible for more SoCs ASoC: rockchip: i2s: Make playback/capture optional ASoC: rockchip: i2s: Fixup config for DAIFMT_DSP_A/B ASoC: dt-bindings: rockchip: Document reset property for i2s ASoC: rockchip: i2s: Fix regmap_ops hang ASoC: rockchip: i2s: Improve dma data transfer efficiency ...
2021-08-02soundwire: intel: introduce shim and alh baseBard Liao
shim base and alh base are platform-dependent. Adding these two parameters allows us to use different shim/alh base for each platform. Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210723115451.7245-7-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-02soundwire: move intel sdw register definitions to sdw_intel.hBard Liao
Those Intel sdw registers will be used by ASoC SOF drivers in the following commits. So move those definitions to sdw_intel.h and it can be visible to SOF drivers. Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210723115451.7245-2-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-02soundwire: add flag to ignore all command/control for mockup devicesPierre-Louis Bossart
SoundWire mockup devices don't take part in the command/control protocol, so all commands will complete with -ENODATA or Command_Ignored results. With a flag, we can suppress such errors in the bus management and make it appear as if all read/writes succeed. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210714032209.11284-7-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-07-05Merge tag 'char-misc-5.14-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc driver updates from Greg KH: "Here is the big set of char / misc and other driver subsystem updates for 5.14-rc1. Included in here are: - habanalabs driver updates - fsl-mc driver updates - comedi driver updates - fpga driver updates - extcon driver updates - interconnect driver updates - mei driver updates - nvmem driver updates - phy driver updates - pnp driver updates - soundwire driver updates - lots of other tiny driver updates for char and misc drivers This is looking more and more like the "various driver subsystems mushed together" tree... All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits) mcb: Use DEFINE_RES_MEM() helper macro and fix the end address PNP: moved EXPORT_SYMBOL so that it immediately followed its function/variable bus: mhi: pci-generic: Add missing 'pci_disable_pcie_error_reporting()' calls bus: mhi: Wait for M2 state during system resume bus: mhi: core: Fix power down latency intel_th: Wait until port is in reset before programming it intel_th: msu: Make contiguous buffers uncached intel_th: Remove an unused exit point from intel_th_remove() stm class: Spelling fix nitro_enclaves: Set Bus Master for the NE PCI device misc: ibmasm: Modify matricies to matrices misc: vmw_vmci: return the correct errno code siox: Simplify error handling via dev_err_probe() fpga: machxo2-spi: Address warning about unused variable lkdtm/heap: Add init_on_alloc tests selftests/lkdtm: Enable various testable CONFIGs lkdtm: Add CONFIG hints in errors where possible lkdtm: Enable DOUBLE_FAULT on all architectures lkdtm/heap: Add vmalloc linear overflow test lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE ...
2021-06-21soundwire: export sdw_update() and sdw_update_no_pm()Pierre-Louis Bossart
We currently export sdw_read() and sdw_write() but the sdw_update() and sdw_update_no_pm() are currently available only to the bus code. This was missed in an earlier contribution. Export both functions so that codec drivers can perform read-modify-write operations without duplicating the code. Fixes: b04c975e654c ('soundwire: bus: use sdw_update_no_pm when initializing a device') Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Bard Liao <bard.liao@intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Acked-By: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210614180815.153711-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-06-20soundwire: bus: Make sdw_nwrite() data pointer argument constRichard Fitzgerald
Idiomatically, write functions should take const pointers to the data buffer, as they don't change the data. They are also likely to be called from functions that receive a const data pointer. Internally the pointer is passed to function/structs shared with the read functions, requiring a cast, but this is an implementation detail that should be hidden by the public API. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://lore.kernel.org/r/20210616145901.29402-1-rf@opensource.cirrus.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-06-14soundwire: intel: move to auxiliary busPierre-Louis Bossart
Now that the auxiliary_bus exists, there's no reason to use platform devices as children of a PCI device any longer. This patch refactors the code by extending a basic auxiliary device with Intel link-specific structures that need to be passed between controller and link levels. This refactoring is much cleaner with no need for cross-pointers between device and link structures. Note that the auxiliary bus API has separate init and add steps, which requires more attention in the error unwinding paths. The main loop needs to deal with kfree() and auxiliary_device_uninit() for the current iteration before jumping to the common label which releases everything allocated in prior iterations. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210511052132.28150-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-05-11soundwire: add missing kernel-doc descriptionPierre-Louis Bossart
For some reason we never added a description for the clk_stop callback. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210511030048.25622-3-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-05-11soundwire: bus: only use CLOCK_STOP_MODE0 and fix confusionsPierre-Louis Bossart
Existing devices and implementations only support the required CLOCK_STOP_MODE0. All the code related to CLOCK_STOP_MODE1 has not been tested and is highly questionable, with a clear confusion between CLOCK_STOP_MODE1 and the simple clock stop state machine. This patch removes all usages of CLOCK_STOP_MODE1 - which has no impact on any solution - and fixes the use of the simple clock stop state machine. The resulting code should be a lot more symmetrical and easier to maintain. Note that CLOCK_STOP_MODE1 is not supported in the SoundWire Device Class specification so it's rather unlikely that we need to re-add this mode later. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20210511030048.25622-2-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>