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usb: dwc3: gadget: start core on Rx.Detect

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When we set Run/Stop bit, we also move the
core to Rx.Detect state so that USB3 handshake
can start from a known location.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2012-01-18 18:32:29 +02:00
parent 457e84b662
commit 8db7ed15f2
2 changed files with 15 additions and 3 deletions
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9
drivers/usb/dwc3/core.h
View File

@ -202,6 +202,15 @@
#define DWC3_DCTL_APPL1RES (1 << 23)
#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17)
#define DWC3_DCTL_TRGTULST(n) ((n) << 17)
#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2))
#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3))
#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4))
#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5))
#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6))
#define DWC3_DCTL_INITU2ENA (1 << 12)
#define DWC3_DCTL_ACCEPTU2ENA (1 << 11)
#define DWC3_DCTL_INITU1ENA (1 << 10)

9
drivers/usb/dwc3/gadget.c
View File

@ -1313,10 +1313,13 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
u32 timeout = 500;
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (is_on)
reg |= DWC3_DCTL_RUN_STOP;
else
if (is_on) {
reg &= ~DWC3_DCTL_TRGTULST_MASK;
reg |= (DWC3_DCTL_RUN_STOP
| DWC3_DCTL_TRGTULST_RX_DET);
} else {
reg &= ~DWC3_DCTL_RUN_STOP;
}
dwc3_writel(dwc->regs, DWC3_DCTL, reg);