The return value of device_property_read_u32_array() is not always 0.
To catch the exception in case that devm_kzalloc failed and the
rt5663->imp_table was NULL, which caused the failure of
device_property_read_u32_array.
Fixes: 450f0f6a8f ("ASoC: rt5663: Add the manual offset field to compensate the DC offset")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20211215031550.70702-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:
We've been adding a 'deep buffer' PCM device to several SOF topologies
in order to reduce power consumption. The typical use-case would be
music playback over a headset: this additional PCM device provides
more buffering and longer latencies, leaving the rest of the system
sleep for longer periods. Notifications and 'regular' low-latency
audio playback would still use the 'normal' PCM device and be mixed
with the 'deep buffer' before rendering on the headphone endpoint. The
tentative direction would be to expose this alternate device to
PulseAudio/PipeWire/CRAS via the UCM SectionModifier definitions.
That seemed a straightforward topology change until our automated
validation stress tests started reporting issues on SoundWire
platforms, when e.g. two START triggers might be send and conversely
the STOP trigger is never sent. The SoundWire stream state management
flagged inconsistent states when the two 'normal' and 'deep buffer'
devices are used concurrently with rapid play/stop/pause monkey
testing.
Looking at the soc-pcm.c code, it seems that the BE state
management needs a lot of love.
a) there is no consistent protection for the BE state. In some parts
of the code, the state updates are protected by a spinlock but in the
trigger they are not. When we open/play/close the two PCM devices in
stress tests, we end-up testing a state that is being modified. That
can't be good.
b) there is a conceptual deadlock: on stop we check the FE states to
see if a shared BE can be stopped, but since we trigger the BE first
the FE states have not been modified yet, so the TRIGGER_STOP is never
sent.
This patchset suggests the removal of the dedicated 'dpcm_lock' and
follows the design suggested by Takashi Iwai. By default the
protection relies on the 'pcm_mutex', except for the FE and BE
triggers where the mutex cannot be used. In this case, the FE PCM
lock is used instead. In the cases where a BE is added/removed, the
pcm_mutex and FE PCM lock are both taken. In addition, the BE PCM
lock is used to serialize access to a shared BE.
With these patches I am able to run our entire validation suite
without any issues with this new 'deep buffer' topology, and no
regressions on existing solutions [1]. The tests were reproduced by
Bard Liao for SoundWire devices.
One might ask 'how come we didn't see this earlier'? The answer is
probably that the .trigger callbacks in most implementations seems to
perform DAPM operations, and sending the triggers multiple times is
not an issue. In the case of SoundWire, we do use the .trigger
callback to reconfigure the bus using the 'bank switch' mechanism. It
could be acceptable to tolerate a trigger multiple times, but the
deadlock on stop cannot be fixed at the SoundWire level alone.
Opens:
1) The issues reported by Nvidia on the RFCv3 may or may not be
present. We'd need test results to make sure the locking update does
not introduce a regression on Tegra.
2) There are other reports of kernel oopses [2] that seem related to
the lack of protection. I'd be good to confirm if this patchset solve
these problems as well.
[1] https://github.com/thesofproject/linux/pull/3146
[2] https://lore.kernel.org/alsa-devel/002f01d7b4f5$c030f4a0$4092dde0$@samsung.com/
changes since RFCv3:
Used two patches from Takashi. We now use the pcm_mutex, the FE stream
lock when adding and deleting a BE, and the BE stream lock to handle
concurrency between streams using the same BE.
Added a patch to use GFP_ATOMIC for the DPCM structure.
Fixed PAUSE_RELEASE transition (GitHub comment from Kai Vehmanen)
changes since RFCv2:
Removal of dpcm_lock to use FE PCM locks (credits to Takashi Iwai for
the suggestion). The FE PCM lock is now used before each use of
for_each_dpcm_be() - with the exception of the trigger where the lock
is already taken. This change is also applied in drivers which make
use of this loop (compress, SH, FSL).
Addition of BE PCM lock to deal with mutual exclusion between triggers
for the same BE.
Alignment of the BE atomicity on the FE on connections, this is
required to avoid sleeping in atomic context.
Additional cleanups (indentation, static functions)
changes since RFC v1:
Removed unused function
Removed exported symbols only used in soc-pcm.c, used static instead
Use a mutex instead of a spinlock
Protect all for_each_dpcm_be() loops
Fix bugs introduced in the refcount
Pierre-Louis Bossart (4):
ASoC: soc-pcm: use GFP_ATOMIC for dpcm structure
ASoC: soc-pcm: align BE 'atomicity' with that of the FE
ASoC: soc-pcm: test refcount before triggering
ASoC: soc-pcm: fix BE handling of PAUSE_RELEASE
Takashi Iwai (2):
ASoC: soc-pcm: Fix and cleanup DPCM locking
ASoC: soc-pcm: serialize BE triggers
include/sound/soc-dpcm.h | 2 +
include/sound/soc.h | 2 -
sound/soc/soc-core.c | 1 -
sound/soc/soc-pcm.c | 351 +++++++++++++++++++++++++++------------
4 files changed, 246 insertions(+), 110 deletions(-)
--
2.25.1
Distinguish which headset codec is on the board by codec_dai->name
instead of card->name.
It fixes the crash of being unable to handle kernel paging requests
at virtual address ADDR by initializing the correct audio codec on
the board.
Call stack of the crash:
```
Unable to handle kernel paging request at virtual address ...
...
Call trace:
rt5682_set_component_pll+0xcc/0xb78 [snd_soc_rt5682]
snd_soc_component_set_pll+0x90/0x154
snd_soc_dai_set_pll+0xf4/0x1ac
sc7180_snd_startup+0x268/0x3c0 [snd_soc_sc7180]
snd_soc_link_startup+0xa4/0x180
soc_pcm_open+0x35c/0x15c8
snd_pcm_open_substream+0xa90/0x13b0
snd_pcm_open+0x1a4/0x55c
snd_pcm_capture_open+0x7c/0xe8
snd_open+0x2b8/0x2e4
chrdev_open+0x364/0x3d4
do_dentry_open+0x66c/0xc58
vfs_open+0x7c/0x8c
path_openat+0x108c/0x2bbc
do_filp_open+0x15c/0x258
do_sys_open+0x278/0x62c
__arm64_compat_sys_openat+0x9c/0xb0
...
```
Fixes: 425c5fce8a ("ASoC: qcom: Add support for ALC5682I-VS codec")
Signed-off-by: Judy Hsiao <judyhsiao@chromium.org>
Link: https://lore.kernel.org/r/20211214022509.1288245-1-judyhsiao@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
A BE connected to more than one FE, e.g. in a mixer case, can go
through the following transitions.
play FE1 -> BE state is START
pause FE1 -> BE state is PAUSED
play FE2 -> BE state is START
stop FE2 -> BE state is STOP (see note [1] below)
release FE1 -> BE state is START
stop FE1 -> BE state is STOP
play FE1 -> BE state is START
pause FE1 -> BE state is PAUSED
play FE2 -> BE state is START
release FE1 -> BE state is START
stop FE2 -> BE state is START
stop FE1 -> BE state is STOP
play FE1 -> BE state is START
play FE2 -> BE state is START (no change)
pause FE1 -> BE state is START (no change)
pause FE2 -> BE state is PAUSED
release FE1 -> BE state is START
release FE2 -> BE state is START (no change)
stop FE1 -> BE state is START (no change)
stop FE2 -> BE state is STOP
The existing code for PAUSE_RELEASE only allows for the case where the
BE is paused, which clearly would not work in the sequences above.
Extend the allowed states to restart the BE when PAUSE_RELEASE is
received, and increase the refcount if the BE is already in START.
[1] the existing logic does not move the BE state back to PAUSED when
the FE2 is stopped. This patch does not change the logic; it would be
painful to keep a history of changes on the FE side, the state machine
is already rather complicated with transitions based on the last BE
state and the trigger type.
Reported-by: Bard Liao <bard.liao@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20211207173745.15850-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
On start/pause_release/resume, when more than one FE is connected to
the same BE, it's possible that the trigger is sent more than
once. This is not desirable, we only want to trigger a BE once, which
is straightforward to implement with a refcount.
For stop/pause/suspend, the problem is more complicated: the check
implemented in snd_soc_dpcm_can_be_free_stop() may fail due to a
conceptual deadlock when we trigger the BE before the FE. In this
case, the FE states have not yet changed, so there are corner cases
where the TRIGGER_STOP is never sent - the dual case of start where
multiple triggers might be sent.
This patch suggests an unconditional trigger in all cases, without
checking the FE states, using a refcount protected by the BE PCM
stream lock.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20211207173745.15850-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
When more than one FE is connected to a BE, e.g. in a mixing use case,
the BE can be triggered multiple times when the FE are opened/started
concurrently. This race condition is problematic in the case of
SoundWire BE dailinks, and this is not desirable in a general
case.
This patch relies on the existing BE PCM lock, which takes atomicity into
account. The locking model assumes that all interactions start with
the FE, so that there is no deadlock between FE and BE locks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[test, checkpatch fix and clarification of commit message by plbossart]
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20211207173745.15850-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The existing locking for DPCM has several issues
a) a confusing mix of card->mutex and card->pcm_mutex.
b) a dpcm_lock spinlock added inconsistently and on paths that could
be recursively taken. The use of irqsave/irqrestore was also overkill.
The suggested model is:
1) The pcm_mutex is the top-most protection of BE links in the FE. The
pcm_mutex is applied always on either the top PCM callbacks or the
external call from DAPM, not taken in the internal functions.
2) the FE stream lock is taken in higher levels before invoking
dpcm_be_dai_trigger()
3) when adding and deleting a BE, both the pcm_mutex and FE stream
lock are taken.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[clarification of commit message by plbossart]
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20211207173745.15850-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The out-of-tree vendor driver uses the following approach to set the
AIU_I2S_MISC register:
1) write AIU_MEM_I2S_START_PTR and AIU_MEM_I2S_RD_PTR
2) configure AIU_I2S_MUTE_SWAP[15:0]
3) write AIU_MEM_I2S_END_PTR
4) set AIU_I2S_MISC[2] to 1 (documented as: "put I2S interface in hold
mode")
5) set AIU_I2S_MISC[4] to 1 (depending on the driver revision it always
stays at 1 while for older drivers this bit is unset in step 4)
6) set AIU_I2S_MISC[2] to 0
7) write AIU_MEM_I2S_MASKS
8) toggle AIU_MEM_I2S_CONTROL[0]
9) toggle AIU_MEM_I2S_BUF_CNTL[0]
Move setting the AIU_I2S_MISC[2] bit to aiu_fifo_i2s_hw_params() so it
resembles the flow in the vendor kernel more closely. While here also
configure AIU_I2S_MISC[4] (documented as: "force each audio data to
left or right according to the bit attached with the audio data")
similar to how the vendor driver does this. This fixes the infamous and
long-standing "machine gun noise" issue (a buffer underrun issue).
Fixes: 6ae9ca9ce9 ("ASoC: meson: aiu: add i2s and spdif support")
Reported-by: Christian Hewitt <christianshewitt@gmail.com>
Reported-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Tested-by: Christian Hewitt <christianshewitt@gmail.com>
Tested-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Cc: stable@vger.kernel.org
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211206210804.2512999-3-martin.blumenstingl@googlemail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from Stephan Gerhold <stephan@gerhold.net>:
This series makes it possible to route audio through the combined
audio/modem DSP on MSM8916/APQ8016 devices instead of bypassing it using
the LPASS drivers. This is necessary to support certain functionality such
as voice call audio. See PATCH 4/5 for details.
Also, qcom,apq8016-sbc.txt is converted to DT schema by adding it to the
existing qcom,sm8250.yaml. The bindings are similar enough that it is easier
to share a single schema instead of duplicating everything into multiple ones.
Fix the following sparse warning: (new ones prefixed by >>)
>> sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c:370:33:
sparse: sparse: incorrect type in argument 3 (different base types)
sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c:370:33: sparse:
expected unsigned int to
sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c:370:33: sparse:
got restricted snd_pcm_format_t [usertype]
Correct discription of format, use S32_LE and S24_LE to distinguish the
different 32bit.
Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20211209073224.21793-1-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Adds a new "alc285-hp-amp-init" model that can be used to apply the ALC285
HP speaker amplifier initialization fixup to devices that are not already
known by passing "hda_model=alc285-hp-amp-init" to the
snd-sof-intel-hda-common module or "model=alc285-hp-amp-init" to the
snd-hda-intel module, depending on which is being used.
Signed-off-by: Bradley Scott <bscott@teksavvy.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211213162246.506838-1-bscott@teksavvy.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The apq8016-sbc-sndcard is designed to be used with the LPASS drivers
(bypassing the combined audio/modem DSP in MSM8916/APQ8016).
Make it possible to use QDSP6 audio instead for the msm8916-qdsp6-sndcard.
This only requires adding some additional hooks that set up the DPCM
backends correctly. Similar code is already used in drivers for newer
SoCs such as apq8096.c, sdm845.c and sm8250.c.
A slightly different initialization sequence is used for the apq8016-sbc
and msm8916-qdsp6 sound card by defining the apq8016_sbc_add_ops()
function as device match data.
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20211202145505.58852-6-stephan@gerhold.net
Signed-off-by: Mark Brown <broonie@kernel.org>
The code inherited from the Skylake driver does not seem to follow any
known hardware recommendations.
The only two recommended options are
a) use DPIB registers if VC1 traffic is not allowed
b) use DPIB DDR update if VC1 traffic is used
In all of SOF-based updated, VC1 is not supported so we can 'safely'
move to using DPIB registers only.
This patch keeps the legacy code, in case there was an undocumented
issue lost to history, and adds the DPIB DDR update for additional
debug.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20211207193947.71080-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Static analysis with scan-build has found an assignment to vp2 that is
never used. It seems that the check on vp->state > 0 should be actually
on vp2->state instead. Fix this.
This dates back to 2002, I found the offending commit from the git
history git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git,
commit 91e39521bbf6 ("[PATCH] ALSA patch for 2.5.4")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211212172025.470367-1-colin.i.king@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Pull sound fixes from Takashi Iwai:
"Another collection of small fixes. It's still not quite calm yet, but
nothing looks scary.
ALSA core got a few fixes for covering the issues detected by fuzzer
and the 32bit compat problem of control API, while the rest are all
device-specific small fixes, including the continued fixes for Tegra"
* tag 'sound-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (23 commits)
ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform
ALSA: usb-audio: Reorder snd_djm_devices[] entries
ALSA: hda/realtek: Fix quirk for TongFang PHxTxX1
ALSA: ctl: Fix copy of updated id with element read/write
ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*()
ALSA: pcm: oss: Limit the period size to 16MB
ALSA: pcm: oss: Fix negative period/buffer sizes
ASoC: codecs: wsa881x: fix return values from kcontrol put
ASoC: codecs: wcd934x: return correct value from mixer put
ASoC: codecs: wcd934x: handle channel mappping list correctly
ASoC: qdsp6: q6routing: Fix return value from msm_routing_put_audio_mixer
ASoC: SOF: Intel: Retry codec probing if it fails
ASoC: amd: fix uninitialized variable in snd_acp6x_probe()
ASoC: rockchip: i2s_tdm: Dup static DAI template
ASoC: rt5682s: Fix crash due to out of scope stack vars
ASoC: rt5682: Fix crash due to out of scope stack vars
ASoC: tegra: Use normal system sleep for ADX
ASoC: tegra: Use normal system sleep for AMX
ASoC: tegra: Use normal system sleep for Mixer
ASoC: tegra: Use normal system sleep for MVC
...
Smatch complains that we might hit the continue path on every iteration
through the loop.
sound/soc/mediatek/mt8195/mt8195-mt6359-rt1019-rt5682.c:831
mt8195_mt6359_rt1019_rt5682_card_late_probe()
error: uninitialized symbol 'sof_comp'.
Initialize "sof_comp" to NULL to silence this warning.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211208151145.GA29257@kili
Signed-off-by: Mark Brown <broonie@kernel.org>
Currently ALSA sequencer core tries to process the queued events as
much as possible when they become dispatchable. If applications try
to queue too massive events to be processed at the very same timing,
the sequencer core would still try to process such all events, either
in the interrupt context or via some notifier; in either away, it
might be a cause of RCU stall or such problems.
As a potential workaround for those problems, this patch adds the
upper limit of the amount of events to be processed. The remaining
events are processed in the next batch, so they won't be lost.
For the time being, it's limited up to 1000 events per queue, which
should be high enough for any normal usages.
Reported-by: Zqiang <qiang.zhang1211@gmail.com>
Reported-by: syzbot+bb950e68b400ab4f65f8@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20211102033222.3849-1-qiang.zhang1211@gmail.com
Link: https://lore.kernel.org/r/20211207165146.2888-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The miXart timer notification is a variable length, and if a hardware
is screwed up, we may access over the actual data size. Let's add a
sanity check and bail out if an invalid value is received.
Link: https://lore.kernel.org/r/20211207153323.27098-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
