diff options
| author | Sebastian Andrzej Siewior | 2011-09-13 17:54:39 +0200 |
|---|---|---|
| committer | Felipe Balbi | 2012-04-30 10:31:21 +0200 |
| commit | e6a3b5e2888b51e37c65c97dae966f793bc4806a (patch) | |
| tree | 934c2a7578d15dedbe2221c28cbdff7afd28588f /drivers/usb/dwc3/gadget.c | |
| parent | usb: dwc3: core: split host address space (diff) | |
| download | kernel-qcow2-linux-e6a3b5e2888b51e37c65c97dae966f793bc4806a.tar.gz kernel-qcow2-linux-e6a3b5e2888b51e37c65c97dae966f793bc4806a.tar.xz kernel-qcow2-linux-e6a3b5e2888b51e37c65c97dae966f793bc4806a.zip | |
usb: dwc3: ep0: add LPM handling
On device loading the driver enables LPM and the acceptance of U1 and U2
states. The [Set|Clear]Feature requests for "U1/U2" are forwarded
directly to the hardware and allow / forbid the initiation of the low
power links.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index dda56b8f8617..906db570ef4f 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1933,6 +1933,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~DWC3_DCTL_TSTCTRL_MASK; + reg &= ~(DWC3_DCTL_INITU1ENA | DWC3_DCTL_INITU2ENA); dwc3_writel(dwc->regs, DWC3_DCTL, reg); dwc->test_mode = false; @@ -2330,6 +2331,14 @@ int __devinit dwc3_gadget_init(struct dwc3 *dwc) goto err5; } + reg = dwc3_readl(dwc->regs, DWC3_DCFG); + reg |= DWC3_DCFG_LPM_CAP; + dwc3_writel(dwc->regs, DWC3_DCFG, reg); + + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg |= DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA; + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + /* Enable all but Start and End of Frame IRQs */ reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN | DWC3_DEVTEN_EVNTOVERFLOWEN | |