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usb: chipidea: add system power management support

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Add system power management support

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 2014-11-26 13:44:29 +08:00 committed by Greg Kroah-Hartman
parent b82613cf09
commit 8076932ff2
1 changed files with 48 additions and 0 deletions
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48
drivers/usb/chipidea/core.c
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@ -791,11 +791,59 @@ static int ci_hdrc_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static void ci_controller_suspend(struct ci_hdrc *ci)
{
ci_hdrc_enter_lpm(ci, true);
if (ci->usb_phy)
usb_phy_set_suspend(ci->usb_phy, 1);
}
static int ci_controller_resume(struct device *dev)
{
struct ci_hdrc *ci = dev_get_drvdata(dev);
dev_dbg(dev, "at %s\n", __func__);
ci_hdrc_enter_lpm(ci, false);
if (ci->usb_phy) {
usb_phy_set_suspend(ci->usb_phy, 0);
usb_phy_set_wakeup(ci->usb_phy, false);
hw_wait_phy_stable();
}
return 0;
}
static int ci_suspend(struct device *dev)
{
struct ci_hdrc *ci = dev_get_drvdata(dev);
if (ci->wq)
flush_workqueue(ci->wq);
ci_controller_suspend(ci);
return 0;
}
static int ci_resume(struct device *dev)
{
return ci_controller_resume(dev);
}
#endif /* CONFIG_PM_SLEEP */
static const struct dev_pm_ops ci_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(ci_suspend, ci_resume)
};
static struct platform_driver ci_hdrc_driver = {
.probe = ci_hdrc_probe,
.remove = ci_hdrc_remove,
.driver = {
.name = "ci_hdrc",
.pm = &ci_pm_ops,
.owner = THIS_MODULE,
},
};