From 11893dae63da0f5b251cf7f9a24d64c8ff4771ff Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 28 Dec 2016 14:57:06 -0800 Subject: usb: chipidea: msm: Handle phy power states The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Hook the phy initialization into the RESET event and the phy power off into the STOPPED event. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd Signed-off-by: Peter Chen --- drivers/usb/chipidea/core.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb/chipidea/core.c') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 367d02a02145..db69f6a0bf98 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -327,6 +327,7 @@ void hw_phymode_configure(struct ci_hdrc *ci) hw_write(ci, OP_PORTSC, PORTSC_STS, PORTSC_STS); } } +EXPORT_SYMBOL_GPL(hw_phymode_configure); /** * _ci_usb_phy_init: initialize phy taking in account both phy and usb_phy @@ -503,9 +504,12 @@ int hw_device_reset(struct ci_hdrc *ci) return ret; } - if (ci->platdata->notify_event) - ci->platdata->notify_event(ci, + if (ci->platdata->notify_event) { + ret = ci->platdata->notify_event(ci, CI_HDRC_CONTROLLER_RESET_EVENT); + if (ret) + return ret; + } /* USBMODE should be configured step by step */ hw_write(ci, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE); -- cgit