Runtime powermanagement is added for PCI driver. When there is no activity for at least 10 secs driver suspends automatically.Runtime- Suspend and resume Stub functions are added.
Signed-off-by: Ravulapati Vishnu vardhan rao <[email protected]> Reviewed-by: Vijendar Mukunda <[email protected]> --- sound/soc/amd/raven/pci-acp3x.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c index c0b8fad..6fbb720 100644 --- a/sound/soc/amd/raven/pci-acp3x.c +++ b/sound/soc/amd/raven/pci-acp3x.c @@ -170,6 +170,11 @@ static int snd_acp3x_probe(struct pci_dev *pci, ret = -ENODEV; goto unmap_mmio; } + pm_runtime_set_autosuspend_delay(&pci->dev, 10000); + pm_runtime_use_autosuspend(&pci->dev); + pm_runtime_set_active(&pci->dev); + pm_runtime_put_noidle(&pci->dev); + pm_runtime_enable(&pci->dev); return 0; unmap_mmio: @@ -189,6 +194,23 @@ static int snd_acp3x_probe(struct pci_dev *pci, return -ENODEV; } +static int snd_acp3x_suspend(struct device *dev) +{ + return 0; +} + +static int snd_acp3x_resume(struct device *dev) +{ + return 0; +} + +static const struct dev_pm_ops acp3x_pm = { + .runtime_suspend = snd_acp3x_suspend, + .runtime_resume = snd_acp3x_resume, + .resume = snd_acp3x_resume, + +}; + static void snd_acp3x_remove(struct pci_dev *pci) { struct acp3x_dev_data *adata = pci_get_drvdata(pci); @@ -196,6 +218,8 @@ static void snd_acp3x_remove(struct pci_dev *pci) kfree(adata->res); kfree(adata->cell); iounmap(adata->acp3x_base); + pm_runtime_disable(&pci->dev); + pm_runtime_get_noresume(&pci->dev); pci_disable_msi(pci); pci_release_regions(pci); pci_disable_device(pci); @@ -214,6 +238,9 @@ static struct pci_driver acp3x_driver = { .id_table = snd_acp3x_ids, .probe = snd_acp3x_probe, .remove = snd_acp3x_remove, + .driver = { + .pm = &acp3x_pm, + } }; module_pci_driver(acp3x_driver); -- 2.7.4
