/**
* dwc3_otg_set_peripheral - bind/unbind the peripheral controller driver.
*
* Returns 0 on success otherwise negative errno.
*/
static int dwc3_otg_set_peripheral(struct usb_otg *otg,
struct usb_gadget *gadget)
{
struct dwc3_otg *dotg = container_of(otg, struct dwc3_otg, otg);
struct otg_fsm *fsm = &dotg->fsm;
struct device *dev = dotg->dwc->dev;
if (gadget) {
dev_err(dev, "Binding gadget %s\n", gadget->name);
otg->gadget = gadget;
} else {
dev_err(dev, "Unbinding gadget\n");
mutex_lock(&fsm->lock);
if (otg->phy->state == OTG_STATE_B_PERIPHERAL) {
/* Reset OTG SM */
fsm->reset = 1;
dwc3_otg_statemachine(fsm);
fsm->reset = 0;
}
otg->gadget = NULL;
mutex_unlock(&fsm->lock);
dwc3_otg_run_sm(fsm);
}
return 0;
}
void dwc3_otg_run_sm(struct otg_fsm *fsm)
{
int state_changed;
mutex_lock(&fsm->lock);
do {
state_changed = dwc3_otg_statemachine(fsm);
} while (state_changed > 0);
mutex_unlock(&fsm->lock);
}
void dwc3_otg_run_sm(struct otg_fsm *fsm)
{
struct dwc3_otg *dotg = container_of(fsm, struct dwc3_otg, fsm);
int state_changed;
/* Prevent running SM on early system resume */
if (!dotg->ready)
return;
mutex_lock(&fsm->lock);
do {
state_changed = dwc3_otg_statemachine(fsm);
} while (state_changed > 0);
mutex_unlock(&fsm->lock);
}
