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usb: ehci-orion: add S2RAM support

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Add suspend/resume callbacks to reset the host controller properly
during S2RAM operation.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miquel Raynal 2019-01-29 10:23:43 +01:00 committed by Greg Kroah-Hartman
parent e04585184d
commit f91649c525
1 changed files with 18 additions and 0 deletions
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18
drivers/usb/host/ehci-orion.c
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@ -182,6 +182,23 @@ static int ehci_orion_drv_reset(struct usb_hcd *hcd)
return ret; return ret;
} }
static int __maybe_unused ehci_orion_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
return ehci_suspend(hcd, device_may_wakeup(dev));
}
static int __maybe_unused ehci_orion_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
return ehci_resume(hcd, false);
}
static SIMPLE_DEV_PM_OPS(ehci_orion_pm_ops, ehci_orion_drv_suspend,
ehci_orion_drv_resume);
static const struct ehci_driver_overrides orion_overrides __initconst = { static const struct ehci_driver_overrides orion_overrides __initconst = {
.extra_priv_size = sizeof(struct orion_ehci_hcd), .extra_priv_size = sizeof(struct orion_ehci_hcd),
.reset = ehci_orion_drv_reset, .reset = ehci_orion_drv_reset,
@ -334,6 +351,7 @@ static struct platform_driver ehci_orion_driver = {
.driver = { .driver = {
.name = "orion-ehci", .name = "orion-ehci",
.of_match_table = ehci_orion_dt_ids, .of_match_table = ehci_orion_dt_ids,
.pm = &ehci_orion_pm_ops,
}, },
}; };