Commit 68907a77 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: pci: add basic suspend/resume support 



this patch adds basic PM support for the
PCI glue layer.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 0646caf7

drivers/usb/dwc3/dwc3-pci.c

+38 −0
Original line number Diff line number Diff line
@@ -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 <balbi@ti.com>");