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usb: dwc3: gadget: disable U1/U2 on disconnect

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If we get a disconnect IRQ, we should take
the core out of low power mode so we can
reconnect afterwards.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2012-05-24 10:30:01 +03:00
parent fcc023c726
commit c4430a2694
1 changed files with 2 additions and 5 deletions
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7
drivers/usb/dwc3/gadget.c
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@ -1906,11 +1906,9 @@ static void dwc3_clear_stall_all_ep(struct dwc3 *dwc)
static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
{ {
int reg;
dev_vdbg(dwc->dev, "%s\n", __func__); dev_vdbg(dwc->dev, "%s\n", __func__);
#if 0
XXX
U1/U2 is powersave optimization. Skip it for now. Anyway we need to
enable it before we can disable it.
reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_INITU1ENA; reg &= ~DWC3_DCTL_INITU1ENA;
@ -1918,7 +1916,6 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
reg &= ~DWC3_DCTL_INITU2ENA; reg &= ~DWC3_DCTL_INITU2ENA;
dwc3_writel(dwc->regs, DWC3_DCTL, reg); dwc3_writel(dwc->regs, DWC3_DCTL, reg);
#endif
dwc3_stop_active_transfers(dwc); dwc3_stop_active_transfers(dwc);
dwc3_disconnect_gadget(dwc); dwc3_disconnect_gadget(dwc);