From: Gregory Herrero <[email protected]> Enable phy driver to report vbus session. This allows us to remove D+ pullup when vbus is not present.
Signed-off-by: Gregory Herrero <[email protected]> Signed-off-by: Mian Yousaf Kaukab <[email protected]> --- drivers/usb/dwc2/gadget.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 78f510d..4418fc5 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3003,11 +3003,35 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) return 0; } +static int s3c_hsotg_vbus_session(struct usb_gadget *gadget, int is_active) +{ + struct dwc2_hsotg *hsotg = to_hsotg(gadget); + unsigned long flags; + + dev_dbg(hsotg->dev, "%s: is_active: %d\n", __func__, is_active); + spin_lock_irqsave(&hsotg->lock, flags); + + if (is_active) { + /* Kill any ep0 requests as controller will be reinitialized */ + kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET); + s3c_hsotg_core_init_disconnected(hsotg); + if (hsotg->enabled) + s3c_hsotg_core_connect(hsotg); + } else { + s3c_hsotg_core_disconnect(hsotg); + s3c_hsotg_disconnect(hsotg); + } + + spin_unlock_irqrestore(&hsotg->lock, flags); + return 0; +} + static const struct usb_gadget_ops s3c_hsotg_gadget_ops = { .get_frame = s3c_hsotg_gadget_getframe, .udc_start = s3c_hsotg_udc_start, .udc_stop = s3c_hsotg_udc_stop, .pullup = s3c_hsotg_pullup, + .vbus_session = s3c_hsotg_vbus_session, }; /** -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
