diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-10-31 22:25:41 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-12-12 11:48:27 +0200 |
| commit | 4878a02898bab1a988206341e529997cb46e5f29 (patch) | |
| tree | f6340ba066d32aeaf7c7499614d4cb6496b9a359 /drivers/usb/dwc3/core.c | |
| parent | 3140e8cbfec18ecb9c9ef856933fdb98c09af1e8 (diff) | |
| download | op-kernel-dev-4878a02898bab1a988206341e529997cb46e5f29.zip op-kernel-dev-4878a02898bab1a988206341e529997cb46e5f29.tar.gz | |
usb: dwc3: move generic dwc3 code from gadget into core
A few inits like the scale value or the removal of the DISSCRAMBLE is
done in the gadget code however it touches a general register.
Move this piece to the core.c file since it is likely to be requied by
both, parts of the core (device and host).
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 2175475..6910a2d 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -349,6 +349,29 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc) dwc3_cache_hwparams(dwc); + reg = dwc3_readl(dwc->regs, DWC3_GCTL); + reg &= ~DWC3_GCTL_SCALEDOWN(3); + reg &= ~DWC3_GCTL_DISSCRAMBLE; + + switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams0)) { + case DWC3_GHWPARAMS1_EN_PWROPT_CLK: + reg &= ~DWC3_GCTL_DSBLCLKGTNG; + break; + default: + dev_dbg(dwc->dev, "No power optimization available\n"); + } + + /* + * WORKAROUND: DWC3 revisions <1.90a have a bug + * when The device fails to connect at SuperSpeed + * and falls back to high-speed mode which causes + * the device to enter in a Connect/Disconnect loop + */ + if (dwc->revision < DWC3_REVISION_190A) + reg |= DWC3_GCTL_U2RSTECN; + + dwc3_writel(dwc->regs, DWC3_GCTL, reg); + ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); if (ret) { dev_err(dwc->dev, "failed to allocate event buffers\n"); |
