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| author | Vikas Sajjan <vikas.sajjan@linaro.org> | 2013-02-11 12:58:00 +0200 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2013-07-23 14:19:18 -0700 |
| commit | 57d04eb131ec9df067028aef278867b4920177c3 (patch) | |
| tree | 408908558ad0156ff5375bfff1b5245c1c64fef7 /drivers/usb/host/xhci-plat.c | |
| parent | 3b2f64d00c46e1e4e9bd0bb9bb12619adac27a4b (diff) | |
| download | linux-57d04eb131ec9df067028aef278867b4920177c3.tar.gz linux-57d04eb131ec9df067028aef278867b4920177c3.tar.bz2 linux-57d04eb131ec9df067028aef278867b4920177c3.zip | |
usb: xhci: add the suspend/resume functionality
Adds power management support to xHCI platform driver.
This patch facilitates the transition of xHCI host controller
between S0 and S3/S4 power states, during suspend/resume cycles.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Vikas C Sajjan <vikas.sajjan@linaro.org>
CC: Doug Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-plat.c')
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 51e22bf89505..412fe8d167cf 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -186,11 +186,37 @@ static int xhci_plat_remove(struct platform_device *dev) return 0; } +#ifdef CONFIG_PM +static int xhci_plat_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_suspend(xhci); +} + +static int xhci_plat_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_resume(xhci, 0); +} + +static const struct dev_pm_ops xhci_plat_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume) +}; +#define DEV_PM_OPS (&xhci_plat_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM */ + static struct platform_driver usb_xhci_driver = { .probe = xhci_plat_probe, .remove = xhci_plat_remove, .driver = { .name = "xhci-hcd", + .pm = DEV_PM_OPS, }, }; MODULE_ALIAS("platform:xhci-hcd"); |