Move the check for the prepared flag inside snd_pcm_dsp_pcm_free() to
avoid having to check it before every invocation of the function.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-8-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a helper function to free PCM in the FW, stop the DMA and free the
widget list. These actions are performed both during PCM trigger STOP
and when a paused stream is freed during system suspend.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-7-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Paused streams must be stopped and platform hw_free should be invoked
during system suspend so they can be restarted properly after system
resume.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-6-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
snd_sof_pcm_platform_hw_params() will be called when the stream is
restarted with a prepare ioctl. This happens in two cases i.e. when a
suspended stream is resumed or when a stream is restarted without
intermediate call to sof_pcm_hw_free(). Make sure to call
snd_sof_pcm_platform_hw_free() in both these cases to keep it balanced.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-5-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The recommended programming sequence for HD-Audio DMA is to reset the
stream before coupling the link and host DMA's.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-4-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a helper function to perform stream reset.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-3-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The DAI_CONFIG IPC that is sent during the STOP trigger is used for
stopping the DMA in the FW. This must be done after the DMA RUN bit is
cleared by the host. So move the call to snd_hdac_ext_link_stream_clear()
before hda_link_dai_widget_update() to follow the correct programming
sequence for DMA stop for HDA DAIs.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211125101520.291581-2-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 0454422288 ("ASoC: codecs: wcd938x: add audio routing and
Kconfig") adds SND_SOC_WCD937X, which does not exist, and
SND_SOC_WCD938X, which seems not really to be the intended config to be
selected, but only a supporting config symbol to the actual config
SND_SOC_WCD938X_SDW for the codec.
Add SND_SOC_WCD938_SDW to the list instead of SND_SOC_WCD93{7,8}X.
The issue was identified with ./scripts/checkkconfigsymbols.py.
Fixes: 0454422288 ("ASoC: codecs: wcd938x: add audio routing and Kconfig")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20211125095158.8394-3-lukas.bulwahn@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit f37fe2f998 ("ASoC: uniphier: add support for UniPhier AIO common
driver") adds configs SND_SOC_UNIPHIER_{LD11,PXS2}, which select the
non-existing config SND_SOC_UNIPHIER_AIO_DMA.
Hence, ./scripts/checkkconfigsymbols.py warns:
SND_SOC_UNIPHIER_AIO_DMA
Referencing files: sound/soc/uniphier/Kconfig
Probably, there is actually no further config intended to be selected
here. So, just drop selecting the non-existing config.
Fixes: f37fe2f998 ("ASoC: uniphier: add support for UniPhier AIO common driver")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20211125095158.8394-2-lukas.bulwahn@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The node pointer is returned by of_parse_phandle() with
refcount incremented in platform_parse_resource(). Calling
of_node_put() to aovid the refcount leak.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20211125071608.3056715-1-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The unnecessary conditional inclusion caused the following warning.
Such as:
>> sound/soc/mediatek/mt8192/mt8192-afe-pcm.c:2368:32: warning: unused
>> variable 'mt8192_afe_pm_ops' [-Wunused-const-variable]
static const struct dev_pm_ops mt8192_afe_pm_ops = {
Because runtime_pm already handles the case without CONFIG_PM, we
can remove CONFIG_PM condition.
Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20211125042422.2349-1-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:
The use of the SPIB register helps reduce power consumption - though
to a smaller degree than DMI_L1. This hardware capability is however
incompatible with userspace-initiated rewinds typically used by
PulseAudio.
In the past (2015..2017) Intel suggested an API extension to let
applications disable rewinds. At the time the feedback was that such a
capability was too Intel-specific and SPIB remained unused except for
loading DSP code. We now see devices with smaller batteries being
released, and it's time to revisit Linux support for SPIB to extend
battery life.
In this update the rewinds are disabled via an opt-in kernel
parameter. In the previous reviews, there was consensus that a Kconfig
option was too complicated for distributions to set, and we are
missing a TBD API to expose such capabilities to user-space.
The debate on whether or not to use rewinds, and the impact of
disabling rewinds, will likely be closed when Intel releases the
'deep-buffer' support, currently under development [2][3]. With this
solution, rewinds will not be needed, ever. When an application deals
with content that is not latency-sensitive (e.g. music playback), it
will be able to reduce power consumption by selecting a different PCM
device with increased buffering capabilities. Low-latency streams
will be handled by the 'regular' path. In other words, the impossible
compromise between power and latency will be handled with different
PCM devices/profiles for the same endpoint, and we can push the design
of capability negotiation to a later time when all the building blocks
(firmware topology, kernel, userspace) are ready - we still have
firmware xruns, DPCM race conditions to solve, and a need to describe
these alternate PCM devices with UCM using 'modifiers'.
During system suspend, paused streams do not get suspended.
Therefore, we need to explicitly free these PCMs in the DSP
and free the associated DAPM widgets so that they can be set
up again during resume.
Fixes: 5fcdbb2d45 ("ASoC: SOF: Add support for dynamic pipelines")
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211123171606.129350-3-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
It's not clear why we would walk the list backwards. That makes no
difference.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211123171606.129350-2-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Older firmware prior to ABI 3.19 has a dependency where the scheduler
widgets need to be setup last. Moving the call to sof_widget_setup()
before the pipeline_complete() call also helps remove the need for the
'reverse' direction when walking through the widget list - this was
only working because of the topology macros but the topology does not
require any order.
Fixes: 5fcdbb2d45 ("ASoC: SOF: Add support for dynamic pipelines")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211123171606.129350-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
When we disable rewinds, then the .ack can be used to program SPIB
with the application pointer, which allows the HDaudio DMA to save
power by opportunistically bursting data transfers when the path to
memory is enabled (and conversely to shut it down when there are no
transfer requests).
The SPIB register can only be programmed with incremental values with
wrap-around after the DMA RUN bits are set. For simplicity, we set the
INFO_NO_REWINDS flag in the .open callback when we already need to
program the SNDRV_PCM_INFO_SYNC_APPLPTR flag.
Rewinds are not used by many applications. One notable application
using rewinds is PulseAudio. Practical experiments with
Ubuntu/PulseAudio default settings did not show any audible issues,
but the user may hear volume changes and notification with a delay,
depending on the size of the ring buffer and latency constraints.
The choice of disabling rewinds is exposed as a kernel parameter and
not a Kconfig option to avoid any undesirable side-effects.
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Co-developed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20211119230852.206310-5-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add the indirections required at the core level for platform-specific
operations on ack.
Note that on errors in the .ack the ALSA core will restore the
previous appl_ptr.
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119230852.206310-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
When the hardware can only deal with a monotonically increasing
appl_ptr, this flag can be set.
In case the application requests a rewind, be it with a
snd_pcm_rewind() or with a direct change of a mmap'ed pointer followed
by a SNDRV_PCM_IOCTL_SYNC_PTR, this patch checks if a rewind
occurred and returns an error.
Credits to Takashi Iwai for identifying the path with SYNC_PTR and
suggesting the pointer checks.
Suggested-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119230852.206310-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
In some cases, the appl_ptr passed by userspace is not checked before
being used. This patch adds an unconditional check and returns an
error code should the appl_ptr exceed the ALSA 'boundary'.
Suggested-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119230852.206310-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from Olivier Moysan <olivier.moysan@foss.st.com>:
Enable support of pm runtime on STM32 SPDIFRX, I2S and DFSDM drivers
to allow power state monitoring.
Merge series from Ariel D'Alessandro <ariel.dalessandro@collabora.com>:
This patchset modifies the tlv320aic31xx driver to update its sysclk if
BCLK is used as the input clock. This allows to be used by the generic
fsl-asoc-card, without having to add a specific driver.
Merge series from Kai Vehmanen <kai.vehmanen@linux.intel.com>:
When a pipeline is marked dynamic in the SOF DSP firmware
topology definition (the tplg file kernel loads from filesystem),
it means the pipeline resources are not allocated when DSP is
booted (at driver probe, or at runtime resume), but rather delayed
until the pipeline is actually used.
Add entry for fsl,imx-audio-tlv320aic31xx audio codec. This codec is
configured to use BCLK as clock input.
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Link: https://lore.kernel.org/r/20211119153248.419802-6-ariel.dalessandro@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
If BCLK is used as PLL input, the sysclk is determined by the hw
params. So it must be updated here to match the input frequency, based
on sample rate, format and channels.
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/r/20211119153248.419802-5-ariel.dalessandro@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add divisors for rates needed when the clk_in is set to BCLK.
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Link: https://lore.kernel.org/r/20211119153248.419802-4-ariel.dalessandro@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
When the clock used by the codec is BCLK, the operation parameters need
to be calculated from input sample rate and format. Low frequency rates
required different r multipliers, in order to achieve a higher PLL
output frequency.
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Link: https://lore.kernel.org/r/20211119153248.419802-3-ariel.dalessandro@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
When a jack handler is registered in cs42l42_set_jack() the
initial state should be reported if an attached headphone/headset
has already been detected.
The jack detect sequence takes around 1 second: typically long
enough for the machine driver to probe and register the jack handler
in time to receive the first report from the interrupt handler. So
it is possible on some systems that the correct initial state was seen
simply because of lucky timing. Modular builds were more likely to
miss the reporting of the initial state.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 4ca239f337 ("ASoC: cs42l42: Always enable TS_PLUG and TS_UNPLUG interrupts")
Link: https://lore.kernel.org/r/20211119124854.58939-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
There are already 3 versions of the Up boards with support for the SOF
community key (ApolloLake, WhiskyLake, TigerLake). Rather than
continue to add quirks for each version, let's add a wildcard.
For WHL and TGL, the authentication supports both the SOF community
key and the firmware signed with the Intel production key. Given two
choices, the community key is the preferred option to allow developers
to sign their own firmware. The firmware signed with production key
can still be selected if needed with a kernel module
option (snd-sof-pci.fw_path="intel/sof")
Tested-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@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/20211119231327.211946-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
To keep the widget use_counts balanced, free the DAI widget
during suspend and also during the stop trigger.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-11-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds support for dynamic pipelines with multi-core
by using the platform-specific core_get/put() ops to
power up/down a core when a widget is set up/freed.
Along with this, a few redundant functions are removed:
1. sof_pipeline_core_enable() is no longer needed as the
pipeline core will be set up when the pipeline widget
is set up
2. sof_core_enable() is replaced with snd_sof_core_get()
4. core_power_up/down() DSP ops are deprecated and replaced with
core get/put ops.
5. Core power down in sof_widget_unload() during topology
removal is also removed as it is not really needed. For dynamic
pipelines, the cores will be powered off when they are not used.
For static pipelines, the cores will be powered off in the device
remove callback.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-10-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The core_power_up/down() ops will be deprecated. Use the
HDA platform-specific functions for powering up/down
the cores during probe/suspend/remove. The enabled_cores_mask
and the core ref_count's are manually updated in each of
these functions.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-9-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Free widgets for static pipelines in sof_tear_down_pipelines().
But this feature is unavailable in older firmware with ABI < 3.19.
Just reset widget use_count's for this case. This would ensure that
the secondary cores enabled required for topology setup are powered
down properly before the primary core is powered off during
system suspend.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-8-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Remove the function sof_load_pipeline_ipc() and directly
send the IPC instead. The pipeline core is already enabled
with the call to sof_pipeline_core_enable() in sof_widget_setup().
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-7-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Set core_get/put ops for CNL/ICL platforms. These platforms
do not support enabling/disabling secondary cores
dynamically. So skip sending the IPC to power off the
cores in the core_put op.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-6-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Set core_get/put() ops for TGL. When core_get()
is requested for a core, its ref_count is incremented
and the PM_CORE_ENABLE IPC sent to the firmware to
power up the core if the current ref_count is 1.
Conversely, the ref_count is decremented in core_put()
and an IPC is sent to the DSP to power off the core
if the ref_count is 0.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-5-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add ops to get/put a core that will be used to power
up/down a core along with incrementing/decrementing
its ref_count.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-4-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add two fields num_cores and dsp_cores_ref_count to
struct snd_sof_dev. These will be used to maintain the
ref count for each core to determine when it should be
powered up or down.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119192621.4096077-3-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Resume common flow (System PM / Runtime PM) is like this:
sof_resume
-> specific device resume
-> snd_sof_load_firmware
-> snd_sof_dsp_reset (1)
-> load_modules()
-> snd_sof_run_firmware (2)
We need to implement dsp_reset callback (1) that will actually reset
the DSP but keep it stalled.
In order to implement this we do the following:
-> put DSP into reset (assert CoreReset bit from PWRCTL)
-> stall the DSP using RunStall bit from AudioDSP_REG2 mix
-> take DSP out of reset (de-assert CoreReset bit from PWRCTL)
At this moment the DSP is taken out of reset and Stalled! This means
that we can load the firmware and then start the DSP (2).
Until now we resetted the DSP by turning down the Audiomix PD. This
doesn't work for Runtime PM if another IP is keeping Audiomix PD up.
By introducing dsp_reset() we no longer rely on turning off the
audiomix to reset the DSP.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211119094319.81674-6-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
On i.MX8M DSP is controlled via a set of registers
from Audio MIX. This patches gets a reference (via regmap)
to Audio Mix registers and implements DSP start.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119094319.81674-5-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We make use of common imx8m_suspend / imx8m_resume functions
for both system PM and runtime PM.
imx8m_suspend:
- frees the MU channels
- disables the clocks
imx8m_resume
- enables the clocks
- requests the MU channels
On i.MX8MP there is no dedicated functionality to put the DSP in reset.
The only way of doing this is to POWER DOWN the Audiomix domain.
We are able to do this because turning off the clocks and freeing the
channels makes the Audiomix to have no users thus PM kernel core turns
it down.
SOF core will not call system PM suspend handler if the DSP is already
down, but at resume it will call the system PM resume. So, we need to
keep track of the state via snd_sof_dsp_set_power_state
Few insights on how SOF core handles the PM:
- SOF core uses PM runtime autosuspend (with a timeout of 2 secs)
- at probe, SOF core boots the DSP and lets the PM runtime suspend to
turn it off, if there is no activity
- when someone opens the ALSA sound card (aplay/arecord, etc) ALSA core
calls PM runtime resume to turn on the DSP
- when the ALSA sound card is closed SOF core make use of PM subsystem
to call PM runtime suspend and thus turning off the DSP.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119094319.81674-4-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Handle clocks and mailbox channels at runtime suspend/resume
in order to save power.
DSP runtime PM uses a timeout of 2s. If device
is idle for 2s system will enter runtime suspend.
Because SOF state machine assumes that even if the DSP wasn't previously
active at a System resume, will re-load the firmware we need to make sure
that all needed resources are active.
Kernel core will take care of enabling the PD, we need to make sure that
we request the MU channels.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119094319.81674-3-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We need at least 3 clocks in order to power up and access
DSP core registers found on i.MX8QM, i.MX8QXP and i.MX8MP
platforms.
Add code to request these clocks and enable them at probe. Next
patches will add PM support which will only activate clocks when
DSP is used.
DSP clocks are already documented in
Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
We choose to add:
* imx8_parse_clocks
* imx8_enable_clocks
* imx8_disable_clocks
wrappers because in the future DSP will need to take care about the
clocks of other related Audio IPs (e.g SAI, ESAI).
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211119094319.81674-2-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
