To preserve power during sleep operations, handle suspend (S3),
hibernation (S4) and runtime (RTD3) transitions. As flow for all of
is shared, define common handlers to reduce code size.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>
Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
---
sound/soc/intel/avs/core.c | 125 +++++++++++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c
index 93180c22032d..c2f8fb87cfc2 100644
--- a/sound/soc/intel/avs/core.c
+++ b/sound/soc/intel/avs/core.c
@@ -536,6 +536,128 @@ 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, bool low_power)
+{
+ struct hdac_bus *bus = &adev->base.core;
+ int ret;
+
+ flush_work(&adev->probe_work);
+
+ snd_hdac_ext_bus_link_power_down_all(bus);
+
+ ret = avs_ipc_set_dx(adev, AVS_MAIN_CORE_MASK, false);
+ /*
+ * pm_runtime is blocked on DSP failure but system-wide suspend is not.
+ * Do not block entire system from suspending if that's the case.
+ */
+ if (ret && ret != -EPERM) {
+ dev_err(adev->dev, "set dx failed: %d\n", ret);
+ return AVS_IPC_RET(ret);
+ }
+
+ avs_dsp_op(adev, int_control, false);
+ snd_hdac_ext_bus_ppcap_int_enable(bus, false);
+
+ ret = avs_dsp_core_disable(adev, AVS_MAIN_CORE_MASK);
+ if (ret < 0) {
+ dev_err(adev->dev, "core_mask %ld disable failed: %d\n", AVS_MAIN_CORE_MASK, ret);
+ return ret;
+ }
+
+ snd_hdac_ext_bus_ppcap_enable(bus, false);
+ /* disable LP SRAM retention */
+ avs_hda_power_gating_enable(adev, false);
+ snd_hdac_bus_stop_chip(bus);
+ /* disable CG when putting controller to reset */
+ avs_hdac_clock_gating_enable(bus, false);
+ snd_hdac_bus_enter_link_reset(bus);
+ avs_hdac_clock_gating_enable(bus, true);
+
+ snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
+
+ 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;
+ struct hdac_ext_link *hlink;
+ int ret;
+
+ snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
+ avs_hdac_bus_init_chip(bus, true);
+
+ snd_hdac_ext_bus_ppcap_enable(bus, true);
+ snd_hdac_ext_bus_ppcap_int_enable(bus, true);
+
+ ret = avs_dsp_boot_firmware(adev, purge);
+ if (ret < 0) {
+ dev_err(adev->dev, "firmware boot failed: %d\n", ret);
+ return ret;
+ }
+
+ /* turn off the links that were off before suspend */
+ list_for_each_entry(hlink, &bus->hlink_list, list) {
+ if (!hlink->ref_count)
+ snd_hdac_ext_bus_link_power_down(hlink);
+ }
+
+ /* check dma status and clean up CORB/RIRB buffers */
+ if (!bus->cmd_dma_state)
+ snd_hdac_bus_stop_cmd_io(bus);
+
+ return 0;
+}
+
+static int __maybe_unused avs_suspend(struct device *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, true);
+}
+
+static int __maybe_unused avs_runtime_suspend(struct device *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, 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 = {
+ .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)
+};
+
static const struct pci_device_id avs_ids[] = {
{ 0 }
};
@@ -546,6 +668,9 @@ static struct pci_driver avs_pci_driver = {
.id_table = avs_ids,
.probe = avs_pci_probe,
.remove = avs_pci_remove,
+ .driver = {
+ .pm = &avs_dev_pm,
+ },
};
module_pci_driver(avs_pci_driver);
--
2.25.1
