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Commit 207bf12f authored by Ranjani Sridharan's avatar Ranjani Sridharan Committed by Mark Brown
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ASoC: SOF: Intel: hda: Amend the DSP state transition diagram 

Amend the DSP state transition diagram in preparation
for introducing the feature to support opportunistic
DSP D0I3 state when the system is in S0.
Signed-off-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200129220726.31792-8-pierre-louis.bossart@linux.intel.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
parent de23a838
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Showing with 17 additions and 19 deletions
sound/soc/sof/intel/hda-dsp.c
View file @ 207bf12f
...@@ -488,33 +488,31 @@ int hda_dsp_set_power_state(struct snd_sof_dev *sdev, ...@@ -488,33 +488,31 @@ int hda_dsp_set_power_state(struct snd_sof_dev *sdev,
/* /*
* Audio DSP states may transform as below:- * Audio DSP states may transform as below:-
* *
* D0I3 compatible stream * Opportunistic D0I3 in S0
* Runtime +---------------------+ opened only, timeout * Runtime +---------------------+ Delayed D0i3 work timeout
* suspend | +--------------------+ * suspend | +--------------------+
* +------------+ D0(active) | | * +------------+ D0I0(active) | |
* | | <---------------+ | * | | <---------------+ |
* | +--------> | | | * | +--------> | New IPC | |
* | |Runtime +--^--+---------^--+--+ The last | | * | |Runtime +--^--+---------^--+--+ (via mailbox) | |
* | |resume | | | | opened D0I3 | | * | |resume | | | | | |
* | | | | | | compatible | | * | | | | | | | |
* | | resume| | | | stream closed | | * | | System| | | | | |
* | | from | | D3 | | | | * | | resume| | S3/S0IX | | | |
* | | D3 | |suspend | | d0i3 | | * | | | | suspend | | S0IX | |
* | | | | | |suspend | | * | | | | | |suspend | |
* | | | | | | | | * | | | | | | | |
* | | | | | | | | * | | | | | | | |
* +-v---+-----------+--v-------+ | | +------+----v----+ * +-v---+-----------+--v-------+ | | +------+----v----+
* | | | +-----------> | * | | | +-----------> |
* | D3 (suspended) | | | D0I3 +-----+ * | D3 (suspended) | | | D0I3 |
* | | +--------------+ | | * | | +--------------+ |
* | | resume from | | | * | | System resume | |
* +-------------------^--------+ d0i3 suspend +----------------+ | * +----------------------------+ +----------------+
* | |
* | D3 suspend |
* +------------------------------------------------+
* *
* d0i3_suspend = s0_suspend && D0I3 stream opened, * S0IX suspend: The DSP is in D0I3 if any D0I3-compatible streams
* D3 suspend = !d0i3_suspend, * ignored the suspend trigger. Otherwise the DSP
* is in D3.
*/ */
static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend) static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend)
......
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