soc_get_playback_capture() (A) is using rtd->dai_link->xxx everywhere.
Because of that, 1 line is unnecessarily long and not readable.

(A)	static int soc_get_playback_capture(...)
	{
		if (rtd->dai_link->dynamic ...) {
		    ^^^^^^^^^^^^^
			...
		} else {
			int cpu_capture = rtd->dai_link->c2c_params ?
					  ^^^^^^^^^^^^^
			...
		}

		if (rtd->dai_link->playback_only) {
		    ^^^^^^^^^^^^^
			...
		}
		...
	}

This patch uses variable "dai_link" to be clear code.
Nothing changes the meanings.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87wn0qzlqp.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

soc_get_playback_capture() (A) returns number of substreams for
playback/capture (B).
ASoC will probe the Sound Card and mapps CPU<->Codec pair.

(A)	static int soc_get_playback_capture(...,
(B)				    int *playback, int *capture)
	{
		...
		if (rtd->dai_link->playback_only) {
			*playback = 1;
			*capture = 0;
		}

		if (rtd->dai_link->capture_only) {
			*playback = 0;
			*capture = 1;
		}
(C)
		return 0;
	}

But it might be no playback no capture if it returns playback=0, capture=0.
It is very difficult to notice about it. This patch indicates error at (C)
then.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/87y1l6zlqx.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Cristian Ciocaltea <cristian.ciocaltea@collabora.com>:

This patch series handles a few issues related to the ES8316 audio
codec, discovered while doing some testing on the Rock 5B board.

When using the codec through the generic audio graph card, there are at
least two calls of es8316_set_dai_sysclk(), with the effect of limiting
the allowed sample rates according to the MCLK/LRCK ratios supported by
the codec:

1. During audio card setup, to set the initial MCLK - see
   asoc_simple_init_dai().

2. Before opening a stream, to update MCLK, according to the stream
   sample rate and the multiplication factor - see
   asoc_simple_hw_params().

In some cases the initial MCLK might be set to a frequency that doesn't
match any of the supported ratios, e.g. 12287999 instead of 12288000,
which is only 1 Hz below the supported clock, as that is what the
hardware reports. This creates an empty list of rate constraints, which
is further passed to snd_pcm_hw_constraint_list() via
es8316_pcm_startup(), and causes the following error on the very first
access of the sound card:

  $ speaker-test -D hw:Analog,0 -F S16_LE -c 2 -t wav
  Broken configuration for playback: no configurations available: Invalid argument
  Setting of hwparams failed: Invalid argument

Note that all subsequent retries succeed thanks to the updated MCLK set
at point 2 above, which uses a computed frequency value instead of a
reading from the hardware registers. Normally this would have mitigated
the issue, but es8316_pcm_startup() executes before the 2nd call to
es8316_set_dai_sysclk(), hence it cannot make use of the updated
constraints.

Since es8316_pcm_hw_params() performs anyway a final validation of MCLK
against the stream sample rate and the supported MCLK/LRCK ratios, fix
the issue by ensuring that sysclk_constraints list is only set when at
least one supported sample rate is autodetected by the codec.

Fixes: b8b88b70 ("ASoC: add es8316 codec driver")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230530181140.483936-3-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

The following error occurs when trying to restore a previously saved
ALSA mixer state (tested on a Rock 5B board):

  $ alsactl --no-ucm -f /tmp/asound.state store hw:Analog
  $ alsactl --no-ucm -I -f /tmp/asound.state restore hw:Analog
  alsactl: set_control:1475: Cannot write control '2:0:0:ALC Capture Target Volume:0' : Invalid argument

According to ES8316 datasheet, the register at address 0x2B, which is
related to the above mixer control, contains by default the value 0xB0.
Considering the corresponding ALC target bits (ALCLVL) are 7:4, the
control is initialized with 11, which is one step above the maximum
value allowed by the driver:

 ALCLVL | dB gain
 -------+--------
  0000  |  -16.5
  0001  |  -15.0
  0010  |  -13.5
  ....  |  .....
  0111  |   -6.0
  1000  |   -4.5
  1001  |   -3.0
  1010  |   -1.5
  ....  |  .....
  1111  |   -1.5

The tests performed using the VU meter feature (--vumeter=TYPE) of
arecord/aplay confirm the specs are correct and there is no measured
gain if the 1011-1111 range would have been mapped to 0 dB:

 dB gain | VU meter %
 --------+-----------
   -6.0  |  30-31
   -4.5  |  35-36
   -3.0  |  42-43
   -1.5  |  50-51
    0.0  |  50-51

Increment the max value allowed for ALC Capture Target Volume control,
so that it matches the hardware default.  Additionally, update the
related TLV to prevent an artificial extension of the dB gain range.

Fixes: b8b88b70 ("ASoC: add es8316 codec driver")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20230530181140.483936-2-cristian.ciocaltea@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>:

The topology file and the machine driver rely on common definitions
for the dailink stream_name.  To avoid any backwards-compatibility
problems, the machine driver stream names are set in stone and cannot
be modified.

This is problematic when we try to name some of the topology widgets
after the stream_name, since the widget name is limited to 44
characters

tools/include/uapi/sound/asound.h:#define SNDRV_CTL_ELEM_ID_NAME_MAXLEN 44

Existing examples include "Analog Playback and Capture" for HDaudio
dailinks, which leaves less than 20 chars to identify widgets/controls
with a meaningful name.

Since the 44-char limit is part of the UAPI definitions, we assumed
there is no way to increase it.

This patchset suggests instead a partial match which allows topology
files to use a shorter stream_name, which in turn allows for
self-explanatory widget names that comply with the 44-char limit.

This should not break any existing setup but with the introduction of
a partial match new dailinks should be named carefully to avoid
confusions between e.g. 'link1' and 'link10'. The last patch fixes
such an issue in the 'nocodec' test topology used by Intel.

Merge series from Trevor Wu <trevor.wu@mediatek.com>:

This adds mt8188 audio support.

With a common kernel config for nocodec and codec modes, the number of DAI
drivers will be set to 15 for nocodec as well. So adjust this when set
the machine params for the nocodec mode if the debug flag is set.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@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>
Link: https://lore.kernel.org/r/20230526204149.456068-4-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

This allows setting shorter names for the widget stream names in
topology. For example, in the case of HDA Analog DAI link, the stream
name is "Analog Playback and Capture". But it is enough to match "Analog"
in the DAI link stream name with a widget's stream name. This is needed
to set more meaningful names for the DAI widgets using the stream name
in topology.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@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>
Link: https://lore.kernel.org/r/20230526204149.456068-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

This allows for setting shorter link names in topology. For example,
for the HDA Analog DAI link, just "Analog" would suffice instead of
"Analog Playback and Capture"
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@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/20230526204149.456068-2-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Use pcm_for_each_format for the PCM format iteration and fix the
following sparse warnings.

sound/soc/ti/davinci-mcasp.c:1336:26: sparse: warning: restricted snd_pcm_format_t degrades to integer
sound/soc/ti/davinci-mcasp.c:1358:26: sparse: warning: restricted snd_pcm_format_t degrades to integer
sound/soc/ti/davinci-mcasp.c:1438:26: sparse: warning: restricted snd_pcm_format_t degrades to integer

No functional changes.
Signed-off-by: Min-Hua Chen <minhuadotchen@gmail.com>
Link: https://lore.kernel.org/r/20230519211636.3699-1-minhuadotchen@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

We have SOF and generic ACP support enabled for Vangogh platform
on some machines. Since we have same PCI id used for probing,
add check for machine configuration flag to avoid conflict with
newer pci drivers. Such machine flag has been initialized via
dmi match on few Vangogh based machines. If no flag is
specified probe and register older platform device.
Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://lore.kernel.org/r/20230530110802.674939-1-venkataprasad.potturu@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add mt8188 dai driver and specify of_machine to support mt8188 audio.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Yaochun Hung <yc.hung@mediatek.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230523025933.30494-2-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add 4.8Mhz 9.6Mhz and 19.2MHz SCLK values
for MCLK 12MHz and 12.288MHz requested by Intel.
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230524125236.57149-1-vitalyr@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

Cirrus never intended to upstream dual licensed code, convert to
GPL only.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230510092534.3919120-1-ckeepax@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from David Rau <David.Rau.opensource@dm.renesas.com>:

This patchset adds the support of DA7219 Jack insertion detection
polarity selection.

The first patch replaces the old txt binding with a new schema binding.

The second patch adds `dlg,jack-ins-det-pty` property for Jack
insertion detection polarity selection.

The last patch adds the driver support for this topic.

The series has been verified on the DA7219 development kit.

Merge series from Daniel Baluta <daniel.baluta@oss.nxp.com>:

This patch series provides better handling of cases where sending
a data blob to FW results in a validation error.

In this case we restore to the last good known value instead of keeping
the data that firwmare rejected.

Merge series from Trevor Wu <trevor.wu@mediatek.com>:

The patch series includes a kselftest fix and changes for extending
driver capability to support more use cases.

Convert the RT1016 Stereo Audio Amplifier bindings to DT schema
Signed-off-by: Anup Sharma <anupnewsmail@gmail.com>
Link: https://lore.kernel.org/r/ZFUFAmBJXvkQAG7m@yogaSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Claudiu Beznea <claudiu.beznea@microchip.com>:

Series removes the pm_runtime.h inclusion in files where
APIs exported though pm_runtime.h are not used. In case
of files that make use of pm.h which comes form pm_runtime.h
added patch 2/2.

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

The following series will enable multicore support on MTL platforms similarly
to other Intel platforms.

The TGL patch is included to simplify the core_put implementation.

Multicore support can be enabled by updated topologies, with current set of
tplg files this series is not introducing any runtime change.

Originally, lineout playback source can only be DAC_3RD. Some SoC
masters only support stereo MTKAIF outputs, so lineout path can't be
used in such case.

MTKAIF connections are as follows.
MOSI0 -> DAC_L
MOSI1 -> DAC_R
MOSI2 -> DAC_3rd

In the patch, lineout playback source can be chosen between DAC_L and
DAC_3rd, so sound can be outputted via lineout even though SoC only
supports stereo MTKAIF outputs.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230508071532.21665-5-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add mtkaif gpio driving to increase signal strength and smt setting to
prevent from overshooting.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230508071532.21665-4-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

kselftest tries to read/write the default value. The default register
value of playback gain is 0x1F(mute), but max gain we specified is 0x12.
The range of the control is 0x0~0x12 and mute(0x1F) is only used in the
driver internally. To solve the problem, implement a new callback
mt6359_get_playback_volsw to report user configured volume instead of
the register value.

In addition, update max of "Headset Volume" to 0x12, so it can match the
maximum seen on latest data sheet.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230508071532.21665-3-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

There are three output data pins MISO0, MISO1 and MISO2 for mt6359.
UL_SRC should be enabled when MISO0 or MISO1 is used, and UL_SRC_34
should be enabled when MISO2 is used.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://lore.kernel.org/r/20230508071532.21665-2-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

The function is improved in the way that if the firmware returns a
validation error on the newly sent bytes, then the kernel will
automatically restore to the old bytes value for a given kcontrol.

This way, if the firmware rejects a data blob then the kernel will also
reject it, instead of saving it for the next suspend/resume cycle. The
old behaviour is that the kernel would save it anyway and on next
firmware boot it would apply the previously-rejected configuration,
leading to errors during playback.

Additionally, the function also saves previously validated
configurations, so that if the firmware does end up rejecting a new
bytes value the kernel can send an old, previously-valid configuration.
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Paul Olaru <paul.olaru@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20230503081049.73847-3-daniel.baluta@oss.nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

The function is improved in the way that if the firmware returns a
validation error on the newly sent bytes, then the kernel will
automatically restore to the old bytes value for a given kcontrol.

This way, if the firmware rejects a data blob then the kernel will also
reject it, instead of saving it for the next suspend/resume cycle. The
old behaviour is that the kernel would save it anyway and on next
firmware boot it would apply the previously-rejected configuration,
leading to errors during playback.

Additionally, the function also saves previously validated
configurations, so that if the firmware does end up rejecting a new
bytes value the kernel can send an old, previously-valid configuration.
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Paul Olaru <paul.olaru@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20230503081049.73847-2-daniel.baluta@oss.nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add support of selecting insertion detection polarity
- Default polarity (Low)
- Inverted polarity (High)

Correct the keywords of parsing `dlg,jack-det-rate`
bases on the new DT binding.
Signed-off-by: David Rau <David.Rau.opensource@dm.renesas.com>
Link: https://lore.kernel.org/r/20230523161821.4260-4-David.Rau.opensource@dm.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add `dlg,jack-ins-det-pty` property for Jack insertion detection
polarity selection.
Signed-off-by: David Rau <David.Rau.opensource@dm.renesas.com>
Link: https://lore.kernel.org/r/20230523161821.4260-3-David.Rau.opensource@dm.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

- Convert Dialog DA7219 bindings to DT schema format.
- Remove unused `dlg,ldo-lvl` property.
Signed-off-by: David Rau <David.Rau.opensource@dm.renesas.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230523161821.4260-2-David.Rau.opensource@dm.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

hda_ipc4_pre_trigger() has two issues:
 1. In the default case, we are returning without unlocking the mutex.
 2. In case SNDRV_PCM_TRIGGER_STOP: when ret is less than zero it goes
    to out, unlocks but returns zero instead of a negative value.

Fix this by changing the final return value to 'ret' instead of zero,
and initialize 'ret' to zero in the start of the function.

Fixes: 225f37b5 ("ASoC: SOF: ipc4-pcm: reset all pipelines during FE DAI hw_free")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20230519064404.1659637-1-harshit.m.mogalapalli@oracle.comSigned-off-by: Mark Brown <broonie@kernel.org>

The return value from the call to sof_ipc4_get_valid_bits() is int.
However, the return value is being assigned to an unsigned
int variable 'out_ref_valid_bits', so making it an int.

Eliminate the following warning:
./sound/soc/sof/ipc4-topology.c:1537:6-24: WARNING: Unsigned expression compared with zero: out_ref_valid_bits < 0
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4985Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20230516081116.71370-1-yang.lee@linux.alibaba.comSigned-off-by: Mark Brown <broonie@kernel.org>

Firmware may do context saving before powering off primary core, so driver
needs to send ipc msg by set_core_state. In IPC4 path, firmware needs to
save current context to IMR before powering off primary core. Firmware
does nothing for set_core_state message in IPC3 path. So IPC4 and IPC3
can share the same operation sequence.
Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230523103217.20412-4-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

In core_get case, driver can power up primary core and don't need to send
ipc message to fw. Non-primary core should be powered up by fw with ipc
message.

In core_put case, driver should first send ipc message to fw to disable dsp
core then power down primary core if the target is primary core.
Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230523103217.20412-3-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

Do not include pm_runtime.h header in files where runtime PM support is
not implemented. Use pm.h instead as suspend to RAM specific
implementation is available.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230517094903.2895238-3-claudiu.beznea@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

Do not include pm_runtime.h header in files where APIs exported by
pm_runtime.h are not used.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com> # for omap-mcbsp-st.c
Link: https://lore.kernel.org/r/20230517094903.2895238-2-claudiu.beznea@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

Adding pre-charge actions to make FEPGA power stable faster. It
improve the recording quality at the beginning. Thus, it is also
meaningfully to decrease the final adc delay time.
Signed-off-by: David Lin <CTLIN0@nuvoton.com>
Link: https://lore.kernel.org/r/20230523083303.98436-1-CTLIN0@nuvoton.comSigned-off-by: Mark Brown <broonie@kernel.org>

Add pci revision id check for renoir and rembrandt platforms.
Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://lore.kernel.org/r/20230523072009.2379198-1-venkataprasad.potturu@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>

Merge series from Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>:

Series of patches cleaning up error messages when loading topology. In
few places instead of logging in place of failure message is logged in
caller. Additionally there are places where both caller and failing
function log error, leading to unnecessary logs. Clean all of the above
up.

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

The MOD_INIT_INSTANCE message contains a CPC (Cycles Per Chunk/processing unit)
parameter.
This CPC value is used by the firmware to calculate the total cycles needed by
the enabled module instances and based on this it can decide to set the
frequency of the DSP core(s).

The manifest section of the firmware image contains a module configuration
section, where a per module table of configurations are listed with measured
CPC values as triplet of IBS/IBS/CPC (Input/Output buffer size - corresponding
to the selected audio format).

In case the CPC value is 0 (missing from the manifest or the
configuration cannot be matched) the firmware will force the DSP cores
to maximum speed to avoid audio glitches due to starvation.  In these
cases the kernel will print a warning message to let the SOF developers
know about the gap and provide information to correct it with a firmware
update.