[PATCH 08/17] usb: chipidea: add system power management support

[Peter Chen]

Add system power management support

Signed-off-by: Peter Chen <peter.c...@freescale.com>
---
 drivers/usb/chipidea/core.c | 48 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index fe38805..bd74f27 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -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,
        },
 };
-- 
1.9.1

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