ASoC: SOF: Intel: cnl: Implement feature to support DSP D0i3 in S0

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This patch implements support for DSP D0i3 when the system
is in S0. The basic idea is to schedule a delayed work after
every successful IPC TX that checks if there are only
D0I3-compatible streams active and if so transition
the DSP to D0I3.

With the introduction of DSP D0I3 in S0, we need to
ensure that the DSP is in D0I0 before sending any new
IPCs. The exception for this would be the
compact IPCs that are used to set the DSP in
D0I3/D0I0 states.

Signed-off-by: Keyon Jie <yang.jie@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/20200129220726.31792-9-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Ranjani Sridharan 2020-01-29 16:07:25 -06:00 • committed by Mark Brown

parent 207bf12f64

commit 63e51fd33f

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6 changed files with 114 additions and 10 deletions

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37

sound/soc/sof/intel/cnl.c

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39

sound/soc/sof/intel/hda-dsp.c

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5

sound/soc/sof/intel/hda.c

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11

sound/soc/sof/intel/hda.h

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29

sound/soc/sof/ipc.c

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3

sound/soc/sof/sof-priv.h

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