diff options
| author | Felipe Balbi <balbi@ti.com> | 2014-04-22 18:20:12 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-04-25 19:21:25 (GMT) |
| commit | e57ebc1db6ef796124b69abca044a373b9110a47 (patch) | |
| tree | 9af920489c6d970b2b69dfebbe06140f30c1a4db /drivers/usb/dwc3 | |
| parent | 40cc57c71b27998c558d4ea23556cad2baef8a56 (diff) | |
| download | linux-e57ebc1db6ef796124b69abca044a373b9110a47.tar.xz | |
usb: dwc3: gadget: pretty print link states
this makes it slightly easier to read link state
change interrupt logs.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 44 |
1 files changed, 41 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index f5adf3f..9a8ae39 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -302,6 +302,42 @@ static const char *dwc3_gadget_ep_cmd_string(u8 cmd) } } +static const char *dwc3_gadget_link_string(enum dwc3_link_state link_state) +{ + switch (link_state) { + case DWC3_LINK_STATE_U0: + return "U0"; + case DWC3_LINK_STATE_U1: + return "U1"; + case DWC3_LINK_STATE_U2: + return "U2"; + case DWC3_LINK_STATE_U3: + return "U3"; + case DWC3_LINK_STATE_SS_DIS: + return "SS.Disabled"; + case DWC3_LINK_STATE_RX_DET: + return "RX.Detect"; + case DWC3_LINK_STATE_SS_INACT: + return "SS.Inactive"; + case DWC3_LINK_STATE_POLL: + return "Polling"; + case DWC3_LINK_STATE_RECOV: + return "Recovery"; + case DWC3_LINK_STATE_HRESET: + return "Hot Reset"; + case DWC3_LINK_STATE_CMPLY: + return "Compliance"; + case DWC3_LINK_STATE_LPBK: + return "Loopback"; + case DWC3_LINK_STATE_RESET: + return "Reset"; + case DWC3_LINK_STATE_RESUME: + return "Resume"; + default: + return "UNKNOWN link state\n"; + } +} + int dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param) { u32 timeout = 500; @@ -2449,8 +2485,6 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, } } - dwc->link_state = next; - switch (next) { case DWC3_LINK_STATE_U1: if (dwc->speed == USB_SPEED_SUPER) @@ -2468,7 +2502,11 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, break; } - dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state); + dev_vdbg(dwc->dev, "link change: %s [%d] -> %s [%d]\n", + dwc3_gadget_link_string(dwc->link_state), + dwc->link_state, dwc3_gadget_link_string(next), next); + + dwc->link_state = next; } static void dwc3_gadget_hibernation_interrupt(struct dwc3 *dwc, |