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usb: chipidea: add usb as system wakeup source 

The USB signal can be system wakeup source, this patch add the
support, for how to enable it, see Documentation/usb/chipidea.txt.
Since USB wakeup enable logic is vendor/platform specific, the
glue layer needs to implement it to support this feature.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Chen 2015-02-11 12:44:48 +08:00 committed by Greg Kroah-Hartman
parent e14db48dfc
commit f8efa7665e
1 changed files with 10 additions and 0 deletions
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10
drivers/usb/chipidea/core.c
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@ -808,6 +808,8 @@ static int ci_hdrc_probe(struct platform_device *pdev)
if (ci_otg_is_fsm_mode(ci))
ci_hdrc_otg_fsm_start(ci);
device_set_wakeup_capable(&pdev->dev, true);
ret = dbg_create_files(ci);
if (!ret)
return 0;
@ -898,6 +900,11 @@ static int ci_suspend(struct device *dev)
return 0;
}
if (device_may_wakeup(dev)) {
usb_phy_set_wakeup(ci->usb_phy, true);
enable_irq_wake(ci->irq);
}
ci_controller_suspend(ci);
return 0;
@ -908,6 +915,9 @@ static int ci_resume(struct device *dev)
struct ci_hdrc *ci = dev_get_drvdata(dev);
int ret;
if (device_may_wakeup(dev))
disable_irq_wake(ci->irq);
ret = ci_controller_resume(dev);
if (ret)
return ret;