diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mei/pci-txe.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/misc/mei/pci-txe.c b/drivers/misc/mei/pci-txe.c index 31d86e76fb7f..2c3f5625a04e 100644 --- a/drivers/misc/mei/pci-txe.c +++ b/drivers/misc/mei/pci-txe.c @@ -41,6 +41,13 @@ static const struct pci_device_id mei_txe_pci_tbl[] = { }; MODULE_DEVICE_TABLE(pci, mei_txe_pci_tbl); +#ifdef CONFIG_PM_RUNTIME +static inline void mei_txe_set_pm_domain(struct mei_device *dev); +static inline void mei_txe_unset_pm_domain(struct mei_device *dev); +#else +static inline void mei_txe_set_pm_domain(struct mei_device *dev) {} +static inline void mei_txe_unset_pm_domain(struct mei_device *dev) {} +#endif /* CONFIG_PM_RUNTIME */ static void mei_txe_pci_iounmap(struct pci_dev *pdev, struct mei_txe_hw *hw) { @@ -147,6 +154,14 @@ static int mei_txe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) pci_set_drvdata(pdev, dev); + /* + * For not wake-able HW runtime pm framework + * can't be used on pci device level. + * Use domain runtime pm callbacks instead. + */ + if (!pci_dev_run_wake(pdev)) + mei_txe_set_pm_domain(dev); + pm_runtime_put_noidle(&pdev->dev); return 0; @@ -199,6 +214,9 @@ static void mei_txe_remove(struct pci_dev *pdev) mei_stop(dev); + if (!pci_dev_run_wake(pdev)) + mei_txe_unset_pm_domain(dev); + /* disable interrupts */ mei_disable_interrupts(dev); free_irq(pdev->irq, dev); @@ -350,6 +368,37 @@ static int mei_txe_pm_runtime_resume(struct device *device) return ret; } + +/** + * mei_txe_set_pm_domain - fill and set pm domian stucture for device + * + * @dev: mei_device + */ +static inline void mei_txe_set_pm_domain(struct mei_device *dev) +{ + struct pci_dev *pdev = dev->pdev; + + if (pdev->dev.bus && pdev->dev.bus->pm) { + dev->pg_domain.ops = *pdev->dev.bus->pm; + + dev->pg_domain.ops.runtime_suspend = mei_txe_pm_runtime_suspend; + dev->pg_domain.ops.runtime_resume = mei_txe_pm_runtime_resume; + dev->pg_domain.ops.runtime_idle = mei_txe_pm_runtime_idle; + + pdev->dev.pm_domain = &dev->pg_domain; + } +} + +/** + * mei_txe_unset_pm_domain - clean pm domian stucture for device + * + * @dev: mei_device + */ +static inline void mei_txe_unset_pm_domain(struct mei_device *dev) +{ + /* stop using pm callbacks if any */ + dev->pdev->dev.pm_domain = NULL; +} #endif /* CONFIG_PM_RUNTIME */ #ifdef CONFIG_PM |