diff options
| author | Felipe Balbi <balbi@ti.com> | 2013-02-11 11:12:02 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-03-18 11:17:02 +0200 |
| commit | f3e117f4437af5a2d1b72ae0fa1890dbf9bca72f (patch) | |
| tree | 6801b75966f972b90448e8c80aa457b08760e69f /drivers/usb | |
| parent | 1d9a00eeca1deeebf001047aa5e5e9d00e5588cf (diff) | |
usb: dwc3: omap: add basic suspend/resume support
this patch implements basic suspend/resume
functionality for the OMAP glue layer.
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-omap.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index ed178c0fc426..35b9673b84df 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -121,6 +121,8 @@ struct dwc3_omap { int irq; void __iomem *base; + u32 utmi_otg_status; + u32 dma_status:1; }; @@ -402,12 +404,66 @@ static const struct of_device_id of_dwc3_match[] = { }; MODULE_DEVICE_TABLE(of, of_dwc3_match); +#ifdef CONFIG_PM +static int dwc3_omap_prepare(struct device *dev) +{ + struct dwc3_omap *omap = dev_get_drvdata(dev); + + dwc3_omap_disable_irqs(omap); + + return 0; +} + +static void dwc3_omap_complete(struct device *dev) +{ + struct dwc3_omap *omap = dev_get_drvdata(dev); + + dwc3_omap_enable_irqs(omap); +} + +static int dwc3_omap_suspend(struct device *dev) +{ + struct dwc3_omap *omap = dev_get_drvdata(dev); + + omap->utmi_otg_status = dwc3_omap_readl(omap->base, + USBOTGSS_UTMI_OTG_STATUS); + + return 0; +} + +static int dwc3_omap_resume(struct device *dev) +{ + struct dwc3_omap *omap = dev_get_drvdata(dev); + + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, + omap->utmi_otg_status); + + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + + return 0; +} + +static const struct dev_pm_ops dwc3_omap_dev_pm_ops = { + .prepare = dwc3_omap_prepare, + .complete = dwc3_omap_complete, + + SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume) +}; + +#define DEV_PM_OPS (&dwc3_omap_dev_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif /* CONFIG_PM */ + static struct platform_driver dwc3_omap_driver = { .probe = dwc3_omap_probe, .remove = dwc3_omap_remove, .driver = { .name = "omap-dwc3", .of_match_table = of_dwc3_match, + .pm = DEV_PM_OPS, }, }; |