From 68907a77431f405c0e8e7031aa77aae03383c69d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 11 Feb 2013 11:36:22 +0200 Subject: [PATCH] usb: dwc3: pci: add basic suspend/resume support this patch adds basic PM support for the PCI glue layer. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-pci.c | 38 +++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index e8d77689a322..227d4a7acad7 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -212,11 +212,49 @@ static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); +#ifdef CONFIG_PM +static int dwc3_pci_suspend(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + + pci_disable_device(pci); + + return 0; +} + +static int dwc3_pci_resume(struct device *dev) +{ + struct pci_dev *pci = to_pci_dev(dev); + int ret; + + ret = pci_enable_device(pci); + if (ret) { + dev_err(dev, "can't re-enable device --> %d\n", ret); + return ret; + } + + pci_set_master(pci); + + return 0; +} + +static const struct dev_pm_ops dwc3_pci_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume) +}; + +#define DEV_PM_OPS (&dwc3_pci_dev_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM */ + static struct pci_driver dwc3_pci_driver = { .name = "dwc3-pci", .id_table = dwc3_pci_id_table, .probe = dwc3_pci_probe, .remove = dwc3_pci_remove, + .driver = { + .pm = DEV_PM_OPS, + }, }; MODULE_AUTHOR("Felipe Balbi "); -- 2.20.1