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ASoC: Intel: Skylake: Flush pending D0i3 request on suspend

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While going to suspend, if we have any pending D0i3 work scheduled,
flush that and force the DSP to goto D0i3 mode before going to suspend.

Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jayachandran B 2016-11-03 17:07:21 +05:30 committed by Mark Brown
parent 68d03a3aa2
commit 8b4a133c61
3 changed files with 38 additions and 0 deletions
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27
sound/soc/intel/skylake/skl-messages.c
View File

@ -294,6 +294,33 @@ int skl_free_dsp(struct skl *skl)
return 0;
}
/*
* In the case of "suspend_active" i.e, the Audio IP being active
* during system suspend, immediately excecute any pending D0i3 work
* before suspending. This is needed for the IP to work in low power
* mode during system suspend. In the case of normal suspend, cancel
* any pending D0i3 work.
*/
int skl_suspend_late_dsp(struct skl *skl)
{
struct skl_sst *ctx = skl->skl_sst;
struct delayed_work *dwork;
if (!ctx)
return 0;
dwork = &ctx->d0i3.work;
if (dwork->work.func) {
if (skl->supend_active)
flush_delayed_work(dwork);
else
cancel_delayed_work_sync(dwork);
}
return 0;
}
int skl_suspend_dsp(struct skl *skl)
{
struct skl_sst *ctx = skl->skl_sst;

10
sound/soc/intel/skylake/skl.c
View File

@ -228,6 +228,15 @@ static int skl_acquire_irq(struct hdac_ext_bus *ebus, int do_disconnect)
return 0;
}
static int skl_suspend_late(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct hdac_ext_bus *ebus = pci_get_drvdata(pci);
struct skl *skl = ebus_to_skl(ebus);
return skl_suspend_late_dsp(skl);
}
#ifdef CONFIG_PM
static int _skl_suspend(struct hdac_ext_bus *ebus)
{
@ -390,6 +399,7 @@ static int skl_runtime_resume(struct device *dev)
static const struct dev_pm_ops skl_pm = {
SET_SYSTEM_SLEEP_PM_OPS(skl_suspend, skl_resume)
SET_RUNTIME_PM_OPS(skl_runtime_suspend, skl_runtime_resume, NULL)
.suspend_late = skl_suspend_late,
};
/*

1
sound/soc/intel/skylake/skl.h
View File

@ -124,6 +124,7 @@ int skl_get_dmic_geo(struct skl *skl);
int skl_nhlt_update_topology_bin(struct skl *skl);
int skl_init_dsp(struct skl *skl);
int skl_free_dsp(struct skl *skl);
int skl_suspend_late_dsp(struct skl *skl);
int skl_suspend_dsp(struct skl *skl);
int skl_resume_dsp(struct skl *skl);
void skl_cleanup_resources(struct skl *skl);