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

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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>
This commit is contained in:
Ivan T. Ivanov 2014-09-11 08:18:59 +08:00 committed by Greg Kroah-Hartman
parent c605f3cdff
commit ea290056d7
1 changed files with 1 additions and 5 deletions
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6
drivers/usb/chipidea/ci_hdrc_msm.c
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@ -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");