usb: phy: mxs-phy: add set_suspend API

It needs to call set_suspend during USB suspend/resume

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c
index 76302720055a..5158332522b1 100644
--- a/drivers/usb/otg/mxs-phy.c
+++ b/drivers/usb/otg/mxs-phy.c
@@ -76,6 +76,25 @@ static void mxs_phy_shutdown(struct usb_phy *phy)
         clk_disable_unprepare(mxs_phy->clk);
 }
 
+static int mxs_phy_suspend(struct usb_phy *x, int suspend)
+{
+        struct mxs_phy *mxs_phy = to_mxs_phy(x);
+
+        if (suspend) {
+                writel_relaxed(0xffffffff, x->io_priv + HW_USBPHY_PWD);
+                writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+                        x->io_priv + HW_USBPHY_CTRL_SET);
+                clk_disable_unprepare(mxs_phy->clk);
+        } else {
+                clk_prepare_enable(mxs_phy->clk);
+                writel_relaxed(BM_USBPHY_CTRL_CLKGATE,
+                        x->io_priv + HW_USBPHY_CTRL_CLR);
+                writel_relaxed(0, x->io_priv + HW_USBPHY_PWD);
+        }
+
+        return 0;
+}
+
 static int mxs_phy_on_connect(struct usb_phy *phy,
                 enum usb_device_speed speed)
 {
@@ -137,6 +156,7 @@ static int mxs_phy_probe(struct platform_device *pdev)
         mxs_phy->phy.label              = DRIVER_NAME;
         mxs_phy->phy.init               = mxs_phy_init;
         mxs_phy->phy.shutdown           = mxs_phy_shutdown;
+        mxs_phy->phy.set_suspend        = mxs_phy_suspend;
         mxs_phy->phy.notify_connect     = mxs_phy_on_connect;
         mxs_phy->phy.notify_disconnect  = mxs_phy_on_disconnect;