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ASoC: SOF: Add system_suspend_target field to struct snd_sof_dev 

Add the system_suspend_target field to struct snd_sof_dev
to track the intended system suspend power target. This will
be used as one of the criteria for determining the
final DSP power state.

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/20200129220726.31792-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ranjani Sridharan 2020-01-29 16:07:20 -06:00 committed by Mark Brown
parent fb9a81192d
commit 043ae13bbd
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
4 changed files with 19 additions and 8 deletions
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4
sound/soc/sof/intel/hda-dsp.c
View File

@ -481,7 +481,7 @@ int hda_dsp_resume(struct snd_sof_dev *sdev)
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
struct pci_dev *pci = to_pci_dev(sdev->dev);
if (sdev->s0_suspend) {
if (sdev->system_suspend_target == SOF_SUSPEND_S0IX) {
/* restore L1SEN bit */
if (hda->l1_support_changed)
snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,
@ -530,7 +530,7 @@ int hda_dsp_suspend(struct snd_sof_dev *sdev)
struct pci_dev *pci = to_pci_dev(sdev->dev);
int ret;
if (sdev->s0_suspend) {
if (sdev->system_suspend_target == SOF_SUSPEND_S0IX) {
/* enable L1SEN to make sure the system can enter S0Ix */
hda->l1_support_changed =
snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR,

2
sound/soc/sof/pcm.c
View File

@ -372,7 +372,7 @@ static int sof_pcm_trigger(struct snd_soc_component *component,
stream.hdr.cmd |= SOF_IPC_STREAM_TRIG_START;
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
if (sdev->s0_suspend &&
if (sdev->system_suspend_target == SOF_SUSPEND_S0IX &&
spcm->stream[substream->stream].d0i3_compatible) {
/*
* trap the event, not sending trigger stop to

9
sound/soc/sof/pm.c
View File

@ -323,10 +323,13 @@ int snd_sof_prepare(struct device *dev)
struct snd_sof_dev *sdev = dev_get_drvdata(dev);
#if defined(CONFIG_ACPI)
sdev->s0_suspend = acpi_target_system_state() == ACPI_STATE_S0;
if (acpi_target_system_state() == ACPI_STATE_S0)
sdev->system_suspend_target = SOF_SUSPEND_S0IX;
else
sdev->system_suspend_target = SOF_SUSPEND_S3;
#else
/* will suspend to S3 by default */
sdev->s0_suspend = false;
sdev->system_suspend_target = SOF_SUSPEND_S3;
#endif
return 0;
@ -337,6 +340,6 @@ void snd_sof_complete(struct device *dev)
{
struct snd_sof_dev *sdev = dev_get_drvdata(dev);
sdev->s0_suspend = false;
sdev->system_suspend_target = SOF_SUSPEND_NONE;
}
EXPORT_SYMBOL(snd_sof_complete);

12
sound/soc/sof/sof-priv.h
View File

@ -60,6 +60,13 @@ enum sof_d0_substate {
SOF_DSP_D0I3, /* DSP D0i3(low power) substate*/
};
/* System suspend target state */
enum sof_system_suspend_state {
SOF_SUSPEND_NONE = 0,
SOF_SUSPEND_S0IX,
SOF_SUSPEND_S3,
};
struct snd_sof_dev;
struct snd_sof_ipc_msg;
struct snd_sof_ipc;
@ -325,8 +332,9 @@ struct snd_sof_dev {
/* power states related */
enum sof_d0_substate d0_substate;
/* flag to track if the intended power target of suspend is S0ix */
bool s0_suspend;
/* Intended power target of system suspend */
enum sof_system_suspend_state system_suspend_target;
/* DSP firmware boot */
wait_queue_head_t boot_wait;