From: Piotr Maziarz piotrx.maziarz@linux.intel.com
Introduce avs_suspend_standby() and avs_resume_standby() to support S0IX streaming. The AudioDSP is not shutdown during such scenario and the PCI device is armed for possible wake operation through an audio event.
As capability for a stream to be active during low power S0 is based off of ->ignore_suspend, adjust the field's value according to platform capabilities if needed.
Signed-off-by: Piotr Maziarz piotrx.maziarz@linux.intel.com Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com --- sound/soc/intel/avs/avs.h | 7 ++++ sound/soc/intel/avs/core.c | 75 ++++++++++++++++++++++++++++++---- sound/soc/intel/avs/topology.c | 10 +++++ 3 files changed, 85 insertions(+), 7 deletions(-)
diff --git a/sound/soc/intel/avs/avs.h b/sound/soc/intel/avs/avs.h index fb73d207697f..8d05b27608fe 100644 --- a/sound/soc/intel/avs/avs.h +++ b/sound/soc/intel/avs/avs.h @@ -24,6 +24,13 @@ struct avs_tplg_library; struct avs_soc_component; struct avs_ipc_msg;
+#ifdef CONFIG_ACPI +#define AVS_S0IX_SUPPORTED \ + (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) +#else +#define AVS_S0IX_SUPPORTED false +#endif + /* * struct avs_dsp_ops - Platform-specific DSP operations * diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c index 0aaded90a99a..6b68d926c9f4 100644 --- a/sound/soc/intel/avs/core.c +++ b/sound/soc/intel/avs/core.c @@ -534,12 +534,30 @@ static void avs_pci_remove(struct pci_dev *pci) pm_runtime_get_noresume(&pci->dev); }
-static int __maybe_unused avs_suspend_common(struct avs_dev *adev) +static int avs_suspend_standby(struct avs_dev *adev) +{ + struct hdac_bus *bus = &adev->base.core; + struct pci_dev *pci = adev->base.pci; + + if (bus->cmd_dma_state) + snd_hdac_bus_stop_cmd_io(bus); + + snd_hdac_ext_bus_link_power_down_all(bus); + + enable_irq_wake(pci->irq); + pci_save_state(pci); + + return 0; +} + +static int __maybe_unused avs_suspend_common(struct avs_dev *adev, bool low_power) { struct hdac_bus *bus = &adev->base.core; int ret;
flush_work(&adev->probe_work); + if (low_power && adev->num_lp_paths) + return avs_suspend_standby(adev);
snd_hdac_ext_bus_link_power_down_all(bus);
@@ -577,11 +595,30 @@ static int __maybe_unused avs_suspend_common(struct avs_dev *adev) return 0; }
-static int __maybe_unused avs_resume_common(struct avs_dev *adev, bool purge) +static int avs_resume_standby(struct avs_dev *adev) +{ + struct hdac_bus *bus = &adev->base.core; + struct pci_dev *pci = adev->base.pci; + + pci_restore_state(pci); + disable_irq_wake(pci->irq); + + snd_hdac_ext_bus_link_power_up_all(bus); + + if (bus->cmd_dma_state) + snd_hdac_bus_init_cmd_io(bus); + + return 0; +} + +static int __maybe_unused avs_resume_common(struct avs_dev *adev, bool low_power, bool purge) { struct hdac_bus *bus = &adev->base.core; int ret;
+ if (low_power && adev->num_lp_paths) + return avs_resume_standby(adev); + snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); avs_hdac_bus_init_chip(bus, true);
@@ -599,26 +636,50 @@ static int __maybe_unused avs_resume_common(struct avs_dev *adev, bool purge)
static int __maybe_unused avs_suspend(struct device *dev) { - return avs_suspend_common(to_avs_dev(dev)); + return avs_suspend_common(to_avs_dev(dev), true); }
static int __maybe_unused avs_resume(struct device *dev) { - return avs_resume_common(to_avs_dev(dev), true); + return avs_resume_common(to_avs_dev(dev), true, true); }
static int __maybe_unused avs_runtime_suspend(struct device *dev) { - return avs_suspend_common(to_avs_dev(dev)); + return avs_suspend_common(to_avs_dev(dev), true); }
static int __maybe_unused avs_runtime_resume(struct device *dev) { - return avs_resume_common(to_avs_dev(dev), true); + return avs_resume_common(to_avs_dev(dev), true, false); +} + +static int __maybe_unused avs_freeze(struct device *dev) +{ + return avs_suspend_common(to_avs_dev(dev), false); +} +static int __maybe_unused avs_thaw(struct device *dev) +{ + return avs_resume_common(to_avs_dev(dev), false, true); +} + +static int __maybe_unused avs_poweroff(struct device *dev) +{ + return avs_suspend_common(to_avs_dev(dev), false); +} + +static int __maybe_unused avs_restore(struct device *dev) +{ + return avs_resume_common(to_avs_dev(dev), false, true); }
static const struct dev_pm_ops avs_dev_pm = { - SET_SYSTEM_SLEEP_PM_OPS(avs_suspend, avs_resume) + .suspend = avs_suspend, + .resume = avs_resume, + .freeze = avs_freeze, + .thaw = avs_thaw, + .poweroff = avs_poweroff, + .restore = avs_restore, SET_RUNTIME_PM_OPS(avs_runtime_suspend, avs_runtime_resume, NULL) };
diff --git a/sound/soc/intel/avs/topology.c b/sound/soc/intel/avs/topology.c index 8a9f9fc48938..e845eaf0a1e7 100644 --- a/sound/soc/intel/avs/topology.c +++ b/sound/soc/intel/avs/topology.c @@ -1405,6 +1405,11 @@ static int avs_widget_load(struct snd_soc_component *comp, int index, if (!le32_to_cpu(dw->priv.size)) return 0;
+ if (w->ignore_suspend && !AVS_S0IX_SUPPORTED) { + dev_info_once(comp->dev, "Device does not support S0IX, check BIOS settings\n"); + w->ignore_suspend = false; + } + tplg = acomp->tplg; mach = dev_get_platdata(comp->card->dev);
@@ -1442,6 +1447,11 @@ static int avs_dai_load(struct snd_soc_component *comp, int index, static int avs_link_load(struct snd_soc_component *comp, int index, struct snd_soc_dai_link *link, struct snd_soc_tplg_link_config *cfg) { + if (link->ignore_suspend && !AVS_S0IX_SUPPORTED) { + dev_info_once(comp->dev, "Device does not support S0IX, check BIOS settings\n"); + link->ignore_suspend = false; + } + if (!link->no_pcm) { /* Stream control handled by IPCs. */ link->nonatomic = true;