/**
* exynos_drd_switch_reset - reset DRD role switch.
*
* @drd: Pointer to DRD controller structure.
* @run: Start sm if 1.
*/
void exynos_drd_switch_reset(struct exynos_drd *drd, int run)
{
struct usb_otg *otg = drd->core.otg;
struct exynos_drd_switch *drd_switch;
unsigned long flags;
if (otg) {
drd_switch = container_of(otg,
struct exynos_drd_switch, otg);
spin_lock_irqsave(&drd_switch->lock, flags);
if (drd->pdata->quirks & FORCE_INIT_PERIPHERAL)
drd_switch->id_state = B_DEV;
else
drd_switch->id_state =
exynos_drd_switch_get_id_state(drd_switch);
drd_switch->vbus_active =
exynos_drd_switch_get_bses_vld(drd_switch);
otg->phy->state = OTG_STATE_UNDEFINED;
spin_unlock_irqrestore(&drd_switch->lock, flags);
if (run)
exynos_drd_switch_schedule_work(&drd_switch->work);
dev_dbg(drd->dev, "%s: id = %d, vbus = %d\n", __func__,
drd_switch->id_state, drd_switch->vbus_active);
}
}
/**
* exynos_drd_switch_vbus_interrupt - interrupt handler for VBUS GPIO.
*
* @irq: irq number.
* @_drdsw: Pointer to DRD switch structure.
*/
static irqreturn_t exynos_drd_switch_vbus_interrupt(int irq, void *_drdsw)
{
struct exynos_drd_switch *drd_switch =
(struct exynos_drd_switch *)_drdsw;
struct device *dev = drd_switch->otg.phy->dev;
bool vbus_active;
vbus_active = exynos_drd_switch_get_bses_vld(drd_switch);
dev_vdbg(dev, "IRQ: VBUS: %sactive\n", vbus_active ? "" : "in");
exynos_drd_switch_handle_vbus(drd_switch, vbus_active);
return IRQ_HANDLED;
}
/**
* exynos_drd_switch_reset - reset DRD role switch.
*
* @drd: Pointer to DRD controller structure.
* @run: Start sm if 1.
*/
void exynos_drd_switch_reset(struct exynos_drd *drd, int run)
{
struct usb_otg *otg = drd->core.otg;
struct exynos_drd_switch *drd_switch;
unsigned long flags;
if (otg) {
drd_switch = container_of(otg,
struct exynos_drd_switch, otg);
/* reset state machine; we assume no works scheduled
or running at this moment */
atomic_inc(&drd_switch->sm_reset);
exynos_drd_switch_work(&drd_switch->work.work);
spin_lock_irqsave(&drd_switch->lock, flags);
if (drd->pdata->quirks & FORCE_INIT_PERIPHERAL)
drd_switch->id_state = B_DEV;
else
drd_switch->id_state =
exynos_drd_switch_get_id_state(drd_switch);
drd_switch->vbus_active =
exynos_drd_switch_get_bses_vld(drd_switch);
spin_unlock_irqrestore(&drd_switch->lock, flags);
atomic_dec(&drd_switch->sm_reset);
if (run)
exynos_drd_switch_schedule_work(&drd_switch->work);
dev_dbg(drd->dev, "%s: id = %d, vbus = %d\n", __func__,
drd_switch->id_state, drd_switch->vbus_active);
}
}
