diff options
| author | Jeeja KP <jeeja.kp@intel.com> | 2015-12-03 23:30:00 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-12-08 17:58:07 +0000 |
| commit | 4557c305d4fc9356563a1d41fa6fe29e494f0460 (patch) | |
| tree | 93e690ed39597290d2ef907c515abd7a71352388 /sound/soc/intel/skylake/skl.c | |
| parent | 820f339fe9fcabee17d3d2ba2b48a51368a51bf4 (diff) | |
| download | linux-4557c305d4fc9356563a1d41fa6fe29e494f0460.tar.gz | |
ASoC: Intel: Skylake: Add support for active suspend
Some of the usecases can be marked as 'ignore_suspend' by
machine. For these on suspend we should keep audio controller
ON by saving the state and not suspending the device
For this we need to maintain a counter for these streams and be
active on suspend when such a stream is opened.
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/intel/skylake/skl.c')
| -rw-r--r-- | sound/soc/intel/skylake/skl.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index d3e87b6f93fe..2c16325d1ce1 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -169,16 +169,40 @@ static int skl_suspend(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(ebus); + /* + * Do not suspend if streams which are marked ignore suspend are + * running, we need to save the state for these and continue + */ + if (skl->supend_active) { + pci_save_state(pci); + pci_disable_device(pci); + return 0; + } else { + return _skl_suspend(ebus); + } } static int skl_resume(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); + int ret; - return _skl_resume(ebus); + /* + * resume only when we are not in suspend active, otherwise need to + * restore the device + */ + if (skl->supend_active) { + pci_restore_state(pci); + ret = pci_enable_device(pci); + } else { + ret = _skl_resume(ebus); + } + + return ret; } #endif /* CONFIG_PM_SLEEP */ |