October 2020 - Alsa-devel - mailman.alsa-project.org

[PATCH] ASoC: tlv320adcx140: Fix a typo in a comment
by Christophe JAILLET 01 Dec '20

01 Dec '20

It is likely that this header file is about the TLV320ADCX140. (0 and 4 swapped) While at it fix a missing "H" in a comment related to the include guard. Signed-off-by: Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> --- sound/soc/codecs/tlv320adcx140.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/tlv320adcx140.h b/sound/soc/codecs/tlv320adcx140.h index eedbc1d7221f..cafcbc0dd5fd 100644 --- a/sound/soc/codecs/tlv320adcx140.h +++ b/sound/soc/codecs/tlv320adcx140.h @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -// TLV320ADCX104 Sound driver +// TLV320ADCX140 Sound driver // Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/ #ifndef _TLV320ADCX140_H @@ -145,4 +145,4 @@ #define ADCX140_GPO_CFG_MAX 4 #define ADCX140_GPO_DRV_MAX 5 -#endif /* _TLV320ADCX140_ */ +#endif /* _TLV320ADCX140_H */ -- 2.25.1

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[PATCH v2] ALSA: compress: allow pause and resume during draining
by Gyeongtaek Lee 25 Nov '20

25 Nov '20

With a stream with low bitrate, user can't pause or resume the stream near the end of the stream because current ALSA doesn't allow it. If the stream has very low bitrate enough to store whole stream into the buffer, user can't do anything except stop the stream and then restart it from the first because most of applications call draining after sending last frame to the kernel. If pause, resume are allowed during draining, user experience can be enhanced. To prevent malfunction in HW drivers which don't support pause during draining, pause during draining will only work if HW driver enable this feature explicitly by calling snd_compr_use_pause_in_draining(). Signed-off-by: Gyeongtaek Lee <gt82.lee(a)samsung.com> Cc: stable(a)vger.kernel.org --- include/sound/compress_driver.h | 17 +++++++++++++ sound/core/compress_offload.c | 44 +++++++++++++++++++++++++++------ 2 files changed, 53 insertions(+), 8 deletions(-) diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index 70cbc5095e72..5a0d6737de5e 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -67,6 +67,7 @@ struct snd_compr_runtime { * @metadata_set: metadata set flag, true when set * @next_track: has userspace signal next track transition, true when set * @partial_drain: undergoing partial_drain for stream, true when set + * @pause_in_draining: paused during draining state, true when set * @private_data: pointer to DSP private data * @dma_buffer: allocated buffer if any */ @@ -80,6 +81,7 @@ struct snd_compr_stream { bool metadata_set; bool next_track; bool partial_drain; + bool pause_in_draining; void *private_data; struct snd_dma_buffer dma_buffer; }; @@ -142,6 +144,7 @@ struct snd_compr_ops { * @direction: Playback or capture direction * @lock: device lock * @device: device id + * @use_pause_in_draining: allow pause in draining, true when set */ struct snd_compr { const char *name; @@ -152,6 +155,7 @@ struct snd_compr { unsigned int direction; struct mutex lock; int device; + bool use_pause_in_draining; #ifdef CONFIG_SND_VERBOSE_PROCFS /* private: */ char id[64]; @@ -166,6 +170,19 @@ int snd_compress_deregister(struct snd_compr *device); int snd_compress_new(struct snd_card *card, int device, int type, const char *id, struct snd_compr *compr); +/** + * snd_compr_use_pause_in_draining - Allow pause and resume in draining state + * @substream: compress substream to set + * + * Allow pause and resume in draining state. + * Only HW driver supports this transition can call this API. + */ +static inline void snd_compr_use_pause_in_draining( + struct snd_compr_stream *substream) +{ + substream->device->use_pause_in_draining = true; +} + /* dsp driver callback apis * For playback: driver should call snd_compress_fragment_elapsed() to let the * framework know that a fragment has been consumed from the ring buffer diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 0e53f6f31916..a071485383ed 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -708,11 +708,24 @@ static int snd_compr_pause(struct snd_compr_stream *stream) { int retval; - if (stream->runtime->state != SNDRV_PCM_STATE_RUNNING) + switch (stream->runtime->state) { + case SNDRV_PCM_STATE_RUNNING: + retval = stream->ops->trigger(stream, + SNDRV_PCM_TRIGGER_PAUSE_PUSH); + if (!retval) + stream->runtime->state = SNDRV_PCM_STATE_PAUSED; + break; + case SNDRV_PCM_STATE_DRAINING: + if (!stream->device->use_pause_in_draining) + return -EPERM; + retval = stream->ops->trigger(stream, + SNDRV_PCM_TRIGGER_PAUSE_PUSH); + if (!retval) + stream->pause_in_draining = true; + break; + default: return -EPERM; - retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_PAUSE_PUSH); - if (!retval) - stream->runtime->state = SNDRV_PCM_STATE_PAUSED; + } return retval; } @@ -720,11 +733,25 @@ static int snd_compr_resume(struct snd_compr_stream *stream) { int retval; - if (stream->runtime->state != SNDRV_PCM_STATE_PAUSED) + switch (stream->runtime->state) { + case SNDRV_PCM_STATE_PAUSED: + retval = stream->ops->trigger(stream, + SNDRV_PCM_TRIGGER_PAUSE_RELEASE); + if (!retval) + stream->runtime->state = SNDRV_PCM_STATE_RUNNING; + break; + case SNDRV_PCM_STATE_DRAINING: + if (!stream->device->use_pause_in_draining || + !stream->pause_in_draining) + return -EPERM; + retval = stream->ops->trigger(stream, + SNDRV_PCM_TRIGGER_PAUSE_RELEASE); + if (!retval) + stream->pause_in_draining = false; + break; + default: return -EPERM; - retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_PAUSE_RELEASE); - if (!retval) - stream->runtime->state = SNDRV_PCM_STATE_RUNNING; + } return retval; } @@ -767,6 +794,7 @@ static int snd_compr_stop(struct snd_compr_stream *stream) /* clear flags and stop any drain wait */ stream->partial_drain = false; stream->metadata_set = false; + stream->pause_in_draining = false; snd_compr_drain_notify(stream); stream->runtime->total_bytes_available = 0; stream->runtime->total_bytes_transferred = 0; -- 2.21.0

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[PATCH v3 00/10] Auxiliary bus implementation and SOF multi-client support
by Dave Ertman 15 Nov '20

15 Nov '20

Brief history of Auxiliary Bus ============================== The auxiliary bus code was originally submitted upstream as virtual bus, and was submitted through the netdev tree.  This process generated up to v4.  This discussion can be found here: https://lore.kernel.org/netdev/20191111192219.30259-1-jeffrey.t.kirsher@int… At this point, GregKH requested that we take the review and revision process to an internal mailing list and garner the buy-in of a respected kernel contributor. The auxiliary bus (then known as virtual bus) was originally submitted along with implementation code for the ice driver and irdma drive, causing the complication of also having dependencies in the rdma tree. This new submission is utilizing an auxiliary bus consumer in only the sound driver tree to create the initial implementation and a single user. Since implementation work has started on this patch set, there have been multiple inquiries about the time frame of its completion. It appears that there will be numerous consumers of this functionality. The process of internal review and implementation using the sound drivers generated 19 internal versions.  The changes, including the name change from virtual bus to auxiliary bus, from these versions can be summarized as the following: - Fixed compilation and checkpatch errors - Improved documentation to address the motivation for virtual bus. - Renamed virtual bus to auxiliary bus - increased maximum device name size - Correct order in Kconfig and Makefile - removed the mid-layer adev->release layer for device unregister - pushed adev->id management to parent driver - all error paths out of ancillary_device_register return error code - all error paths out of ancillary_device_register use put_device - added adev->name element - modname in register cannot be NULL - added KBUILD_MODNAME as prefix for match_name - push adev->id responsibility to registering driver - uevent now parses adev->dev name - match_id function now parses adev->dev name - changed drivers probe function to also take an ancillary_device_id param - split ancillary_device_register into device_initialize and device_add - adjusted what is done in device_initialize and device_add - change adev to ancildev and adrv to ancildrv - change adev to ancildev in documentation ========================== Introduces the auxiliary bus implementation along with the example usage in the Sound Open Firmware(SOF) audio driver. In some subsystems, the functionality of the core device (PCI/ACPI/other) may be too complex for a single device to be managed as a monolithic block or a part of the functionality might need to be exposed to a different subsystem. Splitting the functionality into smaller orthogonal devices makes it easier to manage data, power management and domain-specific communication with the hardware. Also, common auxiliary_device functionality across primary devices can be handled by a common auxiliary_device. A key requirement for such a split is that there is no dependency on a physical bus, device, register accesses or regmap support. These individual devices split from the core cannot live on the platform bus as they are not physical devices that are controlled by DT/ACPI. The same argument applies for not using MFD in this scenario as it relies on individual function devices being physical devices that are DT enumerated. An example for this kind of requirement is the audio subsystem where a single IP handles multiple entities such as HDMI, Soundwire, local devices such as mics/speakers etc. The split for the core's functionality can be arbitrary or be defined by the DSP firmware topology and include hooks for test/debug. This allows for the audio core device to be minimal and tightly coupled with handling the hardware-specific logic and communication. The auxiliary bus is intended to be minimal, generic and avoid domain-specific assumptions. Each auxiliary bus device represents a part of its parent functionality. The generic behavior can be extended and specialized as needed by encapsulating an auxiliary bus device within other domain-specific structures and the use of .ops callbacks. The SOF driver adopts the auxiliary bus for implementing the multi-client support. A client in the context of the SOF driver represents a part of the core device's functionality. It is not a physical device but rather an auxiliary device that needs to communicate with the DSP via IPCs. With multi-client support,the sound card can be separated into multiple orthogonal auxiliary devices for local devices (mic/speakers etc), HDMI, sensing, probes, debug etc. In this series, we demonstrate the usage of the auxiliary bus with the help of the IPC test client which is used for testing the serialization of IPCs when multiple clients talk to the DSP at the same time. v3 changes: rename to auxiliary bus move .c file to drivers/base/ split auxdev unregister flow into uninitialize and delete steps update kernel-doc on register functions for new unregister model update documentation with new name and unregister flow remove check for release in auxiliary bus, allow core to catch Change driver register so only probe and id_table mandatory Fix matching logic in auxillary_match_id to account for longer id->name utilize auxiliary_bus callbacks for probe, remove and shutdown add auxiliary_find_device function add code to ensure unique auxdrv name shorten initialize/uninitialize in function names to init/uninit simplify looping logic in match_id in drives/base/Kconfig changed from tristate to bool Modified signature SOF client register/unregister API Modified PM runtime enabling sequence in the SOF ipc test aux driver Removed driver.name from the aux driver Added Probes client aux driver and device registration in the SOF driver. This allows for enabling the probes functionality in the SOF firmware for audio data extraction from specific points in the audio pipeline. Without auxiliary bus, the implementation requires modifying existing 15+ machine drivers to add the probes DAI links to the sounds cards. Using the auxiliary bus allows for splitting the probes implementation from the SOF core making it easy to maintain. v2 changes: defined pr_fmt for kernel messages replaced WARN_ON calls in registration with pr_err calls adding kernel-doc function comments for device_initialize and device_add fix typo in documentation removed inaccurate line in documentation fixed formatting in drivers/bus/Makefile changed unwind path for sof_client_dev_alloc() improved comments for client list and mem freeing during client unreg removed debugfs entries in sof_ipc_test_client_drv during remove changed the signature of sof_debug_ipc_flood_test() fix a looping error in ancillary_match_id updated error value in sof_client_dev_register() mutex held while traversing client list when unregistering clients updated includes in sof-client.h Dave Ertman (1): Add auxiliary bus support Ranjani Sridharan (9): ASoC: SOF: Introduce descriptors for SOF client ASoC: SOF: Create client driver for IPC test ASoC: SOF: ops: Add ops for client registration ASoC: SOF: Intel: Define ops for client registration ASoC: SOF: Intel: Remove IPC flood test support in SOF core ASoC: SOF: sof-client: Add client APIs to access probes ops ASoC: SOF: compress: move and export sof_probe_compr_ops ASoC: SOF: Add new client driver for probes support ASoC: SOF: Intel: CNL: register probes client Documentation/driver-api/auxiliary_bus.rst | 228 ++++++++++ Documentation/driver-api/index.rst | 1 + drivers/base/Kconfig | 3 + drivers/base/Makefile | 1 + drivers/base/auxiliary.c | 267 ++++++++++++ include/linux/auxiliary_bus.h | 78 ++++ include/linux/mod_devicetable.h | 8 + scripts/mod/devicetable-offsets.c | 3 + scripts/mod/file2alias.c | 8 + sound/soc/sof/Kconfig | 47 ++- sound/soc/sof/Makefile | 10 +- sound/soc/sof/compress.c | 60 +-- sound/soc/sof/compress.h | 1 + sound/soc/sof/core.c | 18 +- sound/soc/sof/debug.c | 457 --------------------- sound/soc/sof/intel/Kconfig | 9 + sound/soc/sof/intel/Makefile | 3 + sound/soc/sof/intel/apl.c | 16 + sound/soc/sof/intel/bdw.c | 16 + sound/soc/sof/intel/byt.c | 20 + sound/soc/sof/intel/cnl.c | 32 ++ sound/soc/sof/intel/hda-dai.c | 27 -- sound/soc/sof/intel/hda.h | 6 - sound/soc/sof/intel/intel-client.c | 40 ++ sound/soc/sof/intel/intel-client.h | 26 ++ sound/soc/sof/ops.h | 14 + sound/soc/sof/pcm.c | 11 - sound/soc/sof/probe.c | 124 +++--- sound/soc/sof/probe.h | 41 +- sound/soc/sof/sof-client.c | 170 ++++++++ sound/soc/sof/sof-client.h | 91 ++++ sound/soc/sof/sof-ipc-test-client.c | 321 +++++++++++++++ sound/soc/sof/sof-priv.h | 23 +- sound/soc/sof/sof-probes-client.c | 414 +++++++++++++++++++ 34 files changed, 1968 insertions(+), 626 deletions(-) create mode 100644 Documentation/driver-api/auxiliary_bus.rst create mode 100644 drivers/base/auxiliary.c create mode 100644 include/linux/auxiliary_bus.h create mode 100644 sound/soc/sof/intel/intel-client.c create mode 100644 sound/soc/sof/intel/intel-client.h create mode 100644 sound/soc/sof/sof-client.c create mode 100644 sound/soc/sof/sof-client.h create mode 100644 sound/soc/sof/sof-ipc-test-client.c create mode 100644 sound/soc/sof/sof-probes-client.c -- 2.26.2

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[PATCH v1 0/2] Modify documentation and machine driver for SC7180 sound card
by Ajye Huang 10 Nov '20

10 Nov '20

Note: - This patch depends on this patch series ASoC: qcom: dt-bindings: Add sc7180 machine bindings https://patchwork.kernel.org/patch/11773221/ ASoC: qcom: sc7180: Add machine driver for sound card registration https://patchwork.kernel.org/patch/11773223/ - The patch is made by the collaboration of Ajye Huang <ajye_huang(a)compal.corp-partner.google.com> Cheng-Yi Chiang <cychiang(a)chromium.org> Thanks for the review! Ajye Huang (2): ASoC: qcom: dt-bindings: Modify sc7180 machine bindings ASoC: qcom: sc7180: Modify machine driver for 2mic .../bindings/sound/qcom,sc7180.yaml | 64 ++++++++++++++++++- sound/soc/qcom/sc7180.c | 60 +++++++++++++++++ 2 files changed, 123 insertions(+), 1 deletion(-) -- 2.25.1

4 8

[PATCH v2 0/2] ASoC: soc-compress: tidyup STREAM vs COMPRESS
by Kuninori Morimoto 10 Nov '20

10 Nov '20

Hi Mark These are v2 of tidyup patch-set for SNDRV_PCM_STREAM_xxx and SND_COMPRESS_xxx. soc-compress is using both SNDRV_PCM_STREAM_xxx and SND_COMPRESS_xxx, but mixed use. This is confusable, but no problem. Because these are defined as UAPI and are using same value. This patch-set make sure these are same value. v1 -> v2 - checks COMPRESS vs PCM_STREAM by using BUILD_BUG_ON() Link: https://lore.kernel.org/r/87wnzcfnkk.wl-kuninori.morimoto.gx@renesas.com Kuninori Morimoto (2): ASoC: soc-compress: tidyup STREAM vs COMPRESS ASoC: soc-compress: assume SNDRV_PCM_STREAM_xxx and SND_COMPRESS_xxx are same sound/soc/soc-compress.c | 63 +++++++++++++++------------------------- 1 file changed, 23 insertions(+), 40 deletions(-) -- 2.25.1

2 7

Subject: [RFC] clang tooling cleanups
by trix＠redhat.com 10 Nov '20

10 Nov '20

This rfc will describe An upcoming treewide cleanup. How clang tooling was used to programatically do the clean up. Solicit opinions on how to generally use clang tooling. The clang warning -Wextra-semi-stmt produces about 10k warnings. Reviewing these, a subset of semicolon after a switch looks safe to fix all the time. An example problem void foo(int a) { switch(a) { case 1: ... }; <--- extra semicolon } Treewide, there are about 100 problems in 50 files for x86_64 allyesconfig. These fixes will be the upcoming cleanup. clang already supports fixing this problem. Add to your command line clang -c -Wextra-semi-stmt -Xclang -fixit foo.c foo.c:8:3: warning: empty expression statement has no effect; remove unnecessary ';' to silence this warning [-Wextra-semi-stmt] }; ^ foo.c:8:3: note: FIX-IT applied suggested code changes 1 warning generated. The big problem is using this treewide is it will fix all 10k problems. 10k changes to analyze and upstream is not practical. Another problem is the generic fixer only removes the semicolon. So empty lines with some tabs need to be manually cleaned. What is needed is a more precise fixer. Enter clang-tidy. https://clang.llvm.org/extra/clang-tidy/ Already part of the static checker infrastructure, invoke on the clang build with make clang-tidy It is only a matter of coding up a specific checker for the cleanup. Upstream this is review is happening here https://reviews.llvm.org/D90180 The development of a checker/fixer is Start with a reproducer void foo (int a) { switch (a) {}; } Generate the abstract syntax tree (AST) clang -Xclang -ast-dump foo.c `-FunctionDecl |-ParmVarDecl `-CompoundStmt |-SwitchStmt | |-ImplicitCastExpr | | `-DeclRefExpr | `-CompoundStmt `-NullStmt Write a matcher to get you most of the way void SwitchSemiCheck::registerMatchers(MatchFinder *Finder) { Finder->addMatcher( compoundStmt(has(switchStmt().bind("switch"))).bind("comp"), this); } The 'bind' method is important, it allows a string to be associated with a node in the AST. In this case these are `-FunctionDecl |-ParmVarDecl `-CompoundStmt <-------- comp |-SwitchStmt <-------- switch | |-ImplicitCastExpr | | `-DeclRefExpr | `-CompoundStmt `-NullStmt When a match is made the 'check' method will be called. void SwitchSemiCheck::check(const MatchFinder::MatchResult &Result) { auto *C = Result.Nodes.getNodeAs<CompoundStmt>("comp"); auto *S = Result.Nodes.getNodeAs<SwitchStmt>("switch"); This is where the string in the bind calls are changed to nodes `-FunctionDecl |-ParmVarDecl `-CompoundStmt <-------- comp, C |-SwitchStmt <-------- switch, S | |-ImplicitCastExpr | | `-DeclRefExpr | `-CompoundStmt `-NullStmt <---------- looking for N And then more logic to find the NullStmt auto Current = C->body_begin(); auto Next = Current; Next++; while (Next != C->body_end()) { if (*Current == S) { if (const auto *N = dyn_cast<NullStmt>(*Next)) { When it is found, a warning is printed and a FixItHint is proposed. auto H = FixItHint::CreateReplacement( SourceRange(S->getBody()->getEndLoc(), N->getSemiLoc()), "}"); diag(N->getSemiLoc(), "unneeded semicolon") << H; This fixit replaces from the end of switch to the semicolon with a '}'. Because the end of the switch is '}' this has the effect of removing all the whitespace as well as the semicolon. Because of the checker's placement in clang-tidy existing linuxkernel checkers, all that was needed to fix the tree was to add a '-fix'to the build's clang-tidy call. I am looking for opinions on what we want to do specifically with cleanups and generally about other source-to-source programmatic changes to the code base. For cleanups, I think we need a new toplevel target clang-tidy-fix And an explicit list of fixers that have a very high (100%?) fix rate. Ideally a bot should make the changes, but a bot could also nag folks. Is there interest in a bot making the changes? Does one already exist? The general source-to-source is a bit blue sky. Ex/ could automagicly refactor api, outline similar cut-n-pasted functions etc. Anything on someone's wishlist you want to try out ? Signed-off-by: Tom Rix <trix(a)redhat.com>

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[PATCH AUTOSEL 5.9 039/147] ASoC: SOF: fix a runtime pm issue in SOF when HDMI codec doesn't work
by Sasha Levin 05 Nov '20

05 Nov '20

From: Rander Wang <rander.wang(a)intel.com> [ Upstream commit 6c63c954e1c52f1262f986f36d95f557c6f8fa94 ] When hda_codec_probe() doesn't initialize audio component, we disable the codec and keep going. However,the resources are not released. The child_count of SOF device is increased in snd_hdac_ext_bus_device_init but is not decrease in error case, so SOF can't get suspended. snd_hdac_ext_bus_device_exit will be invoked in HDA framework if it gets a error. Now copy this behavior to release resources and decrease SOF device child_count to release SOF device. Signed-off-by: Rander Wang <rander.wang(a)intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart(a)linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao(a)linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski(a)linux.intel.com> Signed-off-by: Ranjani Sridharan <ranjani.sridharan(a)linux.intel.com> Link: https://lore.kernel.org/r/20200825235040.1586478-3-ranjani.sridharan@linux.… Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- sound/soc/sof/intel/hda-codec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/sof/intel/hda-codec.c b/sound/soc/sof/intel/hda-codec.c index 2c5c451fa19d7..c475955c6eeba 100644 --- a/sound/soc/sof/intel/hda-codec.c +++ b/sound/soc/sof/intel/hda-codec.c @@ -151,7 +151,7 @@ static int hda_codec_probe(struct snd_sof_dev *sdev, int address, if (!hdev->bus->audio_component) { dev_dbg(sdev->dev, "iDisp hw present but no driver\n"); - return -ENOENT; + goto error; } hda_priv->need_display_power = true; } @@ -174,7 +174,7 @@ static int hda_codec_probe(struct snd_sof_dev *sdev, int address, * other return codes without modification */ if (ret == 0) - ret = -ENOENT; + goto error; } return ret; -- 2.25.1

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[PATCH] ASoC: samsung: i2s: Remove redundant null check before clk_disable_unprepare
by Xu Wang 05 Nov '20

05 Nov '20

Because clk_disable_unprepare() already checked NULL clock parameter, so the additional check is unnecessary, just remove it. Signed-off-by: Xu Wang <vulab(a)iscas.ac.cn> --- sound/soc/samsung/i2s.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index df53d4ea808f..36969f0a3f9a 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -1212,8 +1212,7 @@ static int i2s_runtime_suspend(struct device *dev) priv->suspend_i2scon = readl(priv->addr + I2SCON); priv->suspend_i2spsr = readl(priv->addr + I2SPSR); - if (priv->op_clk) - clk_disable_unprepare(priv->op_clk); + clk_disable_unprepare(priv->op_clk); clk_disable_unprepare(priv->clk); return 0; -- 2.17.1

2 1

[PATCH] ASoC: pcm: DRAIN support reactivation
by Cezary Rojewski 05 Nov '20

05 Nov '20

soc-pcm's dpcm_fe_dai_do_trigger() supported DRAIN commnad up to kernel v5.4 where explicit switch(cmd) has been introduced which takes into account all SNDRV_PCM_TRIGGER_xxx but SNDRV_PCM_TRIGGER_DRAIN. Update switch statement to reactive support for it. As DRAIN is somewhat unique by lacking negative/stop counterpart, bring behaviour of dpcm_fe_dai_do_trigger() for said command back to its pre-v5.4 state by adding it to START/RESUME/PAUSE_RELEASE group. Fixes: acbf27746ecf ("ASoC: pcm: update FE/BE trigger order based on the command") Signed-off-by: Cezary Rojewski <cezary.rojewski(a)intel.com> --- sound/soc/soc-pcm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index dcab9527ba3d..91bf33958159 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -2231,6 +2231,7 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd) case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_DRAIN: ret = dpcm_dai_trigger_fe_be(substream, cmd, true); break; case SNDRV_PCM_TRIGGER_STOP: @@ -2248,6 +2249,7 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd) case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_DRAIN: ret = dpcm_dai_trigger_fe_be(substream, cmd, false); break; case SNDRV_PCM_TRIGGER_STOP: -- 2.17.1

3 2

[PATCH] ASoC: pxa: pxa-ssp: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
by Xu Wang 05 Nov '20

05 Nov '20

ecause clk_prepare_enable() and clk_disable_unprepare() already checked NULL clock parameter, so the additional checks are unnecessary, just remove them. Signed-off-by: Xu Wang <vulab(a)iscas.ac.cn> --- sound/soc/pxa/pxa-ssp.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c index c4e7307a4437..b941adcbb8f9 100644 --- a/sound/soc/pxa/pxa-ssp.c +++ b/sound/soc/pxa/pxa-ssp.c @@ -99,8 +99,7 @@ static int pxa_ssp_startup(struct snd_pcm_substream *substream, pxa_ssp_disable(ssp); } - if (priv->extclk) - clk_prepare_enable(priv->extclk); + clk_prepare_enable(priv->extclk); dma = kzalloc(sizeof(struct snd_dmaengine_dai_dma_data), GFP_KERNEL); if (!dma) @@ -124,8 +123,7 @@ static void pxa_ssp_shutdown(struct snd_pcm_substream *substream, clk_disable_unprepare(ssp->clk); } - if (priv->extclk) - clk_disable_unprepare(priv->extclk); + clk_disable_unprepare(priv->extclk); kfree(snd_soc_dai_get_dma_data(cpu_dai, substream)); snd_soc_dai_set_dma_data(cpu_dai, substream, NULL); -- 2.17.1

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