diff options
| -rw-r--r-- | payloads/libpayload/drivers/usb/dwc2.c | 19 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/usb/dwc2_private.h | 1 |
2 files changed, 18 insertions, 2 deletions
diff --git a/payloads/libpayload/drivers/usb/dwc2.c b/payloads/libpayload/drivers/usb/dwc2.c index 267dea7c71f6..9d19bc666632 100644 --- a/payloads/libpayload/drivers/usb/dwc2.c +++ b/payloads/libpayload/drivers/usb/dwc2.c @@ -140,6 +140,16 @@ static void dwc2_shutdown(hci_t *controller) free(controller); } +/* Test root port device connect status */ +static int dwc2_disconnected(hci_t *controller) +{ + dwc2_reg_t *reg = DWC2_REG(controller); + hprt_t hprt; + + hprt.d32 = readl(®->host.hprt); + return !(hprt.prtena && hprt.prtconnsts); +} + /* * This function returns the actual transfer length when the transfer succeeded * or an error code if the transfer failed @@ -179,9 +189,11 @@ wait_for_complete(endpoint_t *ep, uint32_t ch_num) else return -HCSTAT_UNKNOW; } - } while (timeout--); - /* Release the channel on timeout */ + if (dwc2_disconnected(ep->dev->controller)) + return -HCSTAT_DISCONNECTED; + } while (timeout--); + /* Release the channel when hit timeout condition */ hcchar.d32 = readl(®->host.hchn[ch_num].hccharn); if (hcchar.chen) { /* @@ -310,6 +322,9 @@ dwc2_split_transfer(endpoint_t *ep, int size, int pid, ep_dir_t dir, /* Wait for next frame boundary */ do { hfnum.d32 = readl(®->host.hfnum); + + if (dwc2_disconnected(ep->dev->controller)) + return -HCSTAT_DISCONNECTED; } while (hfnum.frnum % 8 != 0); /* Handle Start-Split */ diff --git a/payloads/libpayload/drivers/usb/dwc2_private.h b/payloads/libpayload/drivers/usb/dwc2_private.h index 5b1a547f8d78..73b63710695e 100644 --- a/payloads/libpayload/drivers/usb/dwc2_private.h +++ b/payloads/libpayload/drivers/usb/dwc2_private.h @@ -54,5 +54,6 @@ typedef enum { HCSTAT_NYET, HCSTAT_UNKNOW, HCSTAT_TIMEOUT, + HCSTAT_DISCONNECTED, } hcstat_t; #endif |