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usb: musb: dsps: polling ID pin status only in otg mode 

Only start the otg_timer in dual role mode; otherwise in peripheral mode
when musb is disconnected from the host port, otg_timer starts and
continuously toggles the session, which causes VBUS pulse.

Signed-off-by: Bin Liu <b-liu@ti.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
hifive-unleashed-5.1
Bin Liu 2013-10-30 09:38:23 -05:00 committed by Felipe Balbi
parent e1d2e31975
commit 5ace3d00fa
1 changed files with 3 additions and 2 deletions
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5
drivers/usb/musb/musb_dsps.c
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@ -359,8 +359,9 @@ static irqreturn_t dsps_interrupt(int irq, void *hci)
if (musb->int_tx || musb->int_rx || musb->int_usb)
ret |= musb_interrupt(musb);
/* Poll for ID change */
if (musb->xceiv->state == OTG_STATE_B_IDLE)
/* Poll for ID change in OTG port mode */
if (musb->xceiv->state == OTG_STATE_B_IDLE &&
musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ);
out:
spin_unlock_irqrestore(&musb->lock, flags);