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The return value of pm_runtime_resume_and_get() needs to be checked to
avoid a usage count imbalance in the error case. This fix is basically
the same as 92c959bae2e5 ("reset: renesas: Fix Runtime PM usage"),
and the last step before pm_runtime_resume_and_get() can be annotated
as __must_check.
Signed-off-by: Heiner Kallweit <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Group all the catpt_xxx structs together in PCM related functions so
they look more cohesive.
Signed-off-by: Cezary Rojewski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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With some improved if-logy, function's size can be reduced slightly.
Signed-off-by: Cezary Rojewski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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After calling dmaengine_submit(), the submitted transfer descriptor
belongs to the DMA engine. Pointer to that descriptor may no longer be
valid after the call and should be tested before awaiting transfer
completion.
Reported-by: Kevin Tian <[email protected]>
Suggested-by: Dave Jiang <[email protected]>
Fixes: 4fac9b31d0b9 ("ASoC: Intel: Add catpt base members")
Signed-off-by: Cezary Rojewski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Support new nvidia,fixed-parent-rate device-tree property which instructs
I2S that board wants parent clock rate to stay at a fixed rate. This allows
to play audio over S/PDIF and I2S simultaneously. The root of the problem
is that audio components on Tegra share the same audio PLL, and thus, only
a subset of rates can be supported if we want to play audio simultaneously.
Filter out audio rates that don't match parent clock rate if device-tree
has the nvidia,fixed-parent-rate property.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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SPDIF and other SoC components share audio PLL on Tegra, thus only one
component may set the desired base clock rate. This creates problem for
HDMI audio because it uses SPDIF and audio may not work if SPDIF's clock
doesn't exactly match standard audio rate since some receivers may reject
audio in that case. Filter out audio rates which SPDIF output can't
support, assuming that other components won't change rate at runtime.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Support system suspend by enforcing runtime PM suspend/resume.
Now there is no doubt that h/w is indeed stopped during suspend
and that h/w state will be properly restored after resume.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Reset S/PDIF controller on runtime PM suspend/resume to ensure that we
always have a consistent hardware state.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Use resource-managed helpers to make code cleaner. Driver's remove callback
isn't needed anymore since driver is completely resource-managed now.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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- Clean up whitespaces, defines and variables.
- Remove obsolete code.
- Adhere to upstream coding style.
- Don't override returned error code.
- Replace pr_err with dev_err.
No functional changes are made by this patch. This is a minor code's
refactoring that will ease further maintenance of the driver.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Tegra20 S/PDIF driver was added in a pre-DT era and was never used since
that time. Revive driver by adding device-tree support.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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FIFO trigger level must be not less than the size of DMA burst, otherwise
audio will be played x4 faster that it should be because part of the DMA
data will be dropped on FIFO input buffer overflow.
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Document new nvidia,fixed-parent-rate property which instructs that this
board wants parent clock to stay at a fixed rate. It allows to prevent
conflicts between audio components that share same parent PLL. For
instance, this property allows to have HDMI audio, speaker and headphones
in the system playing audio simultaneously, which is a common pattern for
consumer devices.
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Dmitry Osipenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Convert NVIDIA Tegra20 I2S binding to schema.
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Add device-tree binding for Tegra20 S/PDIF controller.
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Dmitry Osipenko <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine into v4_20211204_digetx_support_hdmi_audio_on_nvidia_tegra20
dmaengine_topic_slave_id_removal_5.17
Tag for dmaengine slave_id removal topic branch which should be merged
into v5.17
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SND_SOC_SOF_DEVELOPER_SUPPORT contains options affecting how the built
SOF driver stack will behave, enables debug options and other features.
These options have no meaning if the SND_SOC_SOF is not even enabled.
If we have SOF client options under developer_support and debug they can
be selected to be built even without the core, but they do need symbols
from the core (the sof-client API) which can result build failure.
In Kconfig we can have
SND_SOC_SOF_TOPLEVEL=y
SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST=y
for example, which will make the flood client to be built, but the SOF core
is not as SND_SOC_SOF is not selected.
Reviewed-by: Paul Olaru <[email protected]>
Reviewed-by: Daniel Baluta <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Peter Ujfalusi <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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bitclock/frame-master
snd_soc_daifmt_parse_clock_provider_raw() is handling both
bitclock/frame-master, and is supporting both flag/phandle.
Current DT is assuming it is flag style.
This patch allows both case.
Signed-off-by: Kuninori Morimoto <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Newly added shared heap zones should be taken into account during
memory usage scanning.
Reviewed-by: Kai Vehmanen <[email protected]>
Reviewed-by: Liam Girdwood <[email protected]>
Signed-off-by: Karol Trzcinski <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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When pcm stream is stopped "substream->runtime" pointer will be set
to NULL by ALSA core. In case host received an ipc msg from firmware
of type IPC_STREAM_POSITION after pcm stream is stopped, there will
be kernel NULL pointer exception in ipc_period_elapsed(). This patch
fixes it by adding NULL pointer check for "substream->runtime".
Reviewed-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Ajit Kumar Pandey <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Casting "const" attribute away is dangerous, obtain a writable
pointer instead to avoid that.
Signed-off-by: Guennadi Liakhovetski <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The SOF driver removed the support for INFO_RESUME in the commit
"ASoC: SOF: pcm: do not add SNDRV_PCM_INFO_RESUME to runtime hw info".
And resuming is handled by the ALSA core with the .prepare and
.trigger_start stages. So, remove handling of RESUME trigger in the
component driver trigger op. So, remove handling the RESUME trigger in
the platform trigger op for HDA platforms.
Reviewed-by: Kai Vehmanen <[email protected]>
Reviewed-by: Rander Wang <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The SOF driver removed the support for INFO_RESUME in the commit
"ASoC: SOF: pcm: do not add SNDRV_PCM_INFO_RESUME to runtime hw info".
And resuming is handled by the ALSA core with the .prepare and
.trigger_start stages. So, remove handling of RESUME trigger in the
HDA DAI BE trigger op.
Reviewed-by: Kai Vehmanen <[email protected]>
Reviewed-by: Rander Wang <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The SOF driver removed the support for INFO_RESUME in the commit
"ASoC: SOF: pcm: do not add SNDRV_PCM_INFO_RESUME to runtime hw info".
And resuming is handled by the ALSA core with the .prepare and
.trigger_start stages. So, remove handling of RESUME trigger in the
component driver trigger op.
Reviewed-by: Kai Vehmanen <[email protected]>
Reviewed-by: Rander Wang <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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All references to the slave_id field have been removed, so remove the
field as well to prevent new references from creeping in again.
Originally this allowed slave DMA drivers to configure which device
is accessed with the dmaengine_slave_config() call, but this was
inconsistent, as the same information is also passed while requesting
a channel, and never changes in practice.
In modern kernels, the device is always selected when requesting
the channel, so the .slave_id field is no longer useful.
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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The display driver wants to pass a custom flag to the DMA engine driver,
which it started doing by using the slave_id field that was traditionally
used for a different purpose.
As there is no longer a correct use for the slave_id field, it should
really be removed, and the remaining users changed over to something
different.
The new mechanism for passing nonstandard settings is using the
.peripheral_config field, so use that to pass a newly defined structure
here, making it clear that this will not work in portable drivers.
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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The slave_id was previously used to pick one DMA slave instead of another,
but this is now done through the DMA descriptors in device tree.
For the qcom_adm driver, the configuration is documented in the DT
binding to contain a tuple of device identifier and a "crci" field,
but the implementation ends up using only a single cell for identifying
the slave, with the crci getting passed in nonstandard properties of
the device, and passed through the dma driver using the old slave_id
field. Part of the problem apparently is that the nand driver ends up
using only a single DMA request ID, but requires distinct values for
"crci" depending on the type of transfer.
Change both the dmaengine driver and the two slave drivers to allow
the documented binding to work in addition to the ad-hoc passing
of crci values. In order to no longer abuse the slave_id field, pass
the data using the "peripheral_config" mechanism instead.
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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It appears that the code that reads the slave_id from the channel config
was copied incorrectly from other drivers. Nothing ever sets this field
on platforms that use this driver, so remove the reference.
Reviewed-by: Baolin Wang <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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The last driver referencing the slave_id on Marvell PXA and MMP platforms
was the SPI driver, but this stopped doing so a long time ago, so the
TODO from the earlier patch can no be removed.
Fixes: b729bf34535e ("spi/pxa2xx: Don't use slave_id of dma_slave_config")
Fixes: 13b3006b8ebd ("dma: mmp_pdma: add filter function")
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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The slave device is picked through either devicetree or a filter
function, and any remaining out-of-tree drivers would have warned
about this usage since 2015.
Stop interpreting the field finally so it can be removed from
the interface.
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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The field is not interpreted by the DMA engine driver, as all the data
is passed from devicetree instead. Remove the assignment so the field
can eventually be deleted.
Reviewed-by: Nicolas Saenz Julienne <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Ulf Hansson <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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Setting slave_id makes no sense with DT based probing, and
should eventually get removed entirely. Address this driver
by no longer setting the field here.
I could not find which DMA driver is used on PIC32, if it's
in the tree at all, but none of the obvious ones even care
about slave_id any more.
Acked-by: Mark Brown <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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This field is no longer set from any driver now, so remove the
last references as well.
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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Nothing sets the slave_id field any more, so stop accessing
it to allow the removal of this field.
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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The DMA resource is never set up anywhere, and passing this as slave_id
has not been the proper procedure in a long time.
As a preparation for removing all slave_id references from the ALSA code,
remove this one.
According to Dmitry Osipenko, this driver has never been used and
the mechanism for configuring DMA would not work as it is implemented,
so this part will get rewritten when the driver gets put into use
again in the future.
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
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Merge series from Ranjani Sridharan <[email protected]>:
This set of patches deals with modifications to the signature of kcontrol
get/set data functions to make them more intuitive. The last patch deals
with initializing the binary control data size after boot up.
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on i386 or x86_64:
when # CONFIG_ACPI is not set,
so SND_SOC_ACPI is not set:
WARNING: unmet direct dependencies detected for SND_AMD_ACP_CONFIG
Depends on [n]: SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] &&
SND_SOC_ACPI [=n]
Selected by [y]:
- SND_SOC_AMD_ACP_COMMON [=y] && SOUND [=y] && !UML && SND [=y] &&
SND_SOC [=y] && X86 [=y] && PCI [=y]
This problem is due to the unconditional selection of
SND_AMD_ACP_CONFIG in other options. Using 'depends on' solved an
initial problem but exposed another, let's use select instead.
Reported-by: Randy Dunlap <[email protected]>
Fixes: d9b994cd7641 ('ASoC: AMD: acp-config: fix missing dependency on SND_SOC_ACPI')
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Acked-by: Randy Dunlap <[email protected]> # build-tested
Reviewed-by: Daniel Baluta <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Reviewed-by: Ajit Kumar Pandey <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Convert Tegra audio complex with the
* ALC5632
* MAX98090
* RT5640
* RT5677
* SGTL5000
* TrimSlice
* WM8753
* WM8903
* WM9712
codec to the YAML format.
Additional changes:
- added missing HPOUTL to the WM9712 codec.
- extended rt5677 codec with multiple pins
Reviewed-by: Dmitry Osipenko <[email protected]>
Signed-off-by: David Heidelberg <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Read back the control data from the DSP to initialize the control data
size to match that of the data in the DSP. This is particularly useful
for volatile read-only kcontrols in static pipelines.
Signed-off-by: Ranjani Sridharan <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The SOF_CTRL_TYPE_VALUE_COMP_* type is not used by the firmware nor in the
kernel side.
It is also not clear what action should be taken for such type.
With this in mind:
The correct ipc_cmd can be selected based on the `ctrl_cmd` and the `set`
parameters:
if the ctrl_cmd is SOF_CTRL_CMD_BINARY then SOF_CTRL_TYPE_DATA_*
otherwise SOF_CTRL_TYPE_VALUE_CHAN_*.
The SET or GET direction can be selected with the use of `set` parameter.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The component type is not used in firmware nor in the kernel currently and
it is not even clear how it should be handled.
Do not even try to handle it to avoid errors.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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There is no need to use two variables to store and check the same
information, the scontrol->cmd is the same as scontrol->control_data->cmd.
Drop the former one and when it is needed, access the cmd from the
control_data.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The scontrol->control_data->cmd has been configured during initialization
to the correct sof_ipc_ctrl_cmd.
No need to pass duplicated information, let's use the already available
one via scontrol.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Set the scontrol->control_data->cmd early to the same as scontrol->cmd.
This is a preparatory patch to remove the ctrl_cmd parameter for the
snd_sof_ipc_set_get_comp_data() function.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The correct ipc_cmd can be selected based on the `ctrl_cmd` and the `set`
parameters:
if the ctrl_cmd is SOF_CTRL_CMD_BINARY then SOF_IPC_COMP_*_DATA
otherwise SOF_IPC_COMP_*_VALUE.
The SET or GET direction can be selected with the use of `set` parameter.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Rename the send parameter to set in snd_sof_ipc_set_get_comp_data() and
sof_set_get_large_ctrl_data() to be more aligned with the function name.
No functional change.
Signed-off-by: Peter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Signed-off-by: Ranjani Sridharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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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: 450f0f6a8fb4 ("ASoC: rt5663: Add the manual offset field to compensate the DC offset")
Signed-off-by: Jiasheng Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Similar with commit 8a49cd11e68ed0 ("ASoC: SOF: ACPI: avoid reverse
module dependency") we will be having hardware specific drivers that
link against a common "helper" framework.
sof-of-dev.c becomes a library with the interface defined in the newly
created file sof-of-dev.h.
This is the final step started with Kconfig simplification in
commit 7548a391c53ca ("ASoC: SOF: i.MX: simplify Kconfig")
Signed-off-by: Daniel Baluta <[email protected]>
Reviewed-by: Paul Olaru <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Reviewed-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Merge series from Pierre-Louis Bossart <[email protected]>:
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/[email protected]/
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
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The function gpr_alloc_port return ERR_PTR on errors, it doesn't return
null.
Signed-off-by: Miaoqian Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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