diff options
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 3 | ||||
| -rw-r--r-- | drivers/misc/mei/pci-me.c | 50 |
2 files changed, 53 insertions, 0 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index fe76e5b4cd2a..beff9ef319f8 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -419,6 +419,9 @@ struct mei_device { * Power Gating support */ enum mei_pg_event pg_event; +#ifdef CONFIG_PM_RUNTIME + struct dev_pm_domain pg_domain; +#endif /* CONFIG_PM_RUNTIME */ unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ u32 rd_msg_hdr; diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index fcbf270c2c2a..88516b02c685 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -87,6 +87,14 @@ static const struct pci_device_id mei_me_pci_tbl[] = { MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); +#ifdef CONFIG_PM_RUNTIME +static inline void mei_me_set_pm_domain(struct mei_device *dev); +static inline void mei_me_unset_pm_domain(struct mei_device *dev); +#else +static inline void mei_me_set_pm_domain(struct mei_device *dev) {} +static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} +#endif /* CONFIG_PM_RUNTIME */ + /** * mei_quirk_probe - probe for devices that doesn't valid ME interface * @@ -225,6 +233,14 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) schedule_delayed_work(&dev->timer_work, HZ); + /* + * 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_me_set_pm_domain(dev); + if (mei_pg_is_enabled(dev)) pm_runtime_put_noidle(&pdev->dev); @@ -276,6 +292,9 @@ static void mei_me_remove(struct pci_dev *pdev) dev_dbg(&pdev->dev, "stop\n"); mei_stop(dev); + if (!pci_dev_run_wake(pdev)) + mei_me_unset_pm_domain(dev); + /* disable interrupts */ mei_disable_interrupts(dev); @@ -421,6 +440,37 @@ static int mei_me_pm_runtime_resume(struct device *device) return ret; } + +/** + * mei_me_set_pm_domain - fill and set pm domian stucture for device + * + * @dev: mei_device + */ +static inline void mei_me_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_me_pm_runtime_suspend; + dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; + dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; + + pdev->dev.pm_domain = &dev->pg_domain; + } +} + +/** + * mei_me_unset_pm_domain - clean pm domian stucture for device + * + * @dev: mei_device + */ +static inline void mei_me_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 |