From 8db7ed15f2557e26371e4b2d98fee290d992b715 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 18 Jan 2012 18:32:29 +0200 Subject: [PATCH] usb: dwc3: gadget: start core on Rx.Detect 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 --- drivers/usb/dwc3/core.h | 9 +++++++++ drivers/usb/dwc3/gadget.c | 9 ++++++--- 2 files changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 123c3aa47128..71d958af2393 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -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) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7913d1b50e38..2c4482f13a12 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -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); -- GitLab