usb: chipidea: msm: Use USB PHY API to control PHY state

PHY drivers keep track of the current state of the hardware,
so don't change PHY settings under it.

Cc: 3.16+ <stable@vger.kernel.org>
Cc: Tim Bird <tbird20d@gmail.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 5 deletions

diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
index d72b9d2de2c5..30bdd51a6d77 100644
--- a/drivers/usb/chipidea/ci_hdrc_msm.c
+++ b/drivers/usb/chipidea/ci_hdrc_msm.c
@@ -20,7 +20,6 @@
 static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
 {
         struct device *dev = ci->gadget.dev.parent;
-        int val;
 
         switch (event) {
         case CI_HDRC_CONTROLLER_RESET_EVENT:
@@ -34,10 +33,7 @@ static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
                  * Put the transceiver in non-driving mode. Otherwise host
                  * may not detect soft-disconnection.
                  */
-                val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL);
-                val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
-                val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
-                usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL);
+                usb_phy_notify_disconnect(ci->transceiver, USB_SPEED_UNKNOWN);
                 break;
         default:
                 dev_dbg(dev, "unknown ci_hdrc event\n");