diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0054-dwc_otg-add-handling-of-SPLIT-transaction-data-toggl.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0054-dwc_otg-add-handling-of-SPLIT-transaction-data-toggl.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0054-dwc_otg-add-handling-of-SPLIT-transaction-data-toggl.patch b/target/linux/brcm2708/patches-3.10/0054-dwc_otg-add-handling-of-SPLIT-transaction-data-toggl.patch new file mode 100644 index 0000000000..b7854770a5 --- /dev/null +++ b/target/linux/brcm2708/patches-3.10/0054-dwc_otg-add-handling-of-SPLIT-transaction-data-toggl.patch @@ -0,0 +1,52 @@ +From f90755cd13b722cd3ea79bee92c29d2828b3905f Mon Sep 17 00:00:00 2001 +From: P33M <P33M@github.com> +Date: Sun, 3 Mar 2013 14:45:53 +0000 +Subject: [PATCH 054/174] dwc_otg: add handling of SPLIT transaction data + toggle errors + +Previously a data toggle error on packets from a USB1.1 device behind +a TT would result in the Pi locking up as the driver never handled +the associated interrupt. Patch adds basic retry mechanism and +interrupt acknowledgement to cater for either a chance toggle error or +for devices that have a broken initial toggle state (FT8U232/FT232BM). +--- + drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 19 ++++++++++++++----- + 1 file changed, 14 insertions(+), 5 deletions(-) + +--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c ++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c +@@ -1921,13 +1921,20 @@ static int32_t handle_hc_datatglerr_intr + dwc_otg_qtd_t * qtd) + { + DWC_DEBUGPL(DBG_HCDI, "--Host Channel %d Interrupt: " +- "Data Toggle Error--\n", hc->hc_num); ++ "Data Toggle Error on %s transfer--\n", ++ hc->hc_num, (hc->ep_is_in ? "IN" : "OUT")); + +- if (hc->ep_is_in) { ++ /* Data toggles on split transactions cause the hc to halt. ++ * restart transfer */ ++ if(hc->qh->do_split) ++ { ++ qtd->error_count++; ++ dwc_otg_hcd_save_data_toggle(hc, hc_regs, qtd); ++ update_urb_state_xfer_intr(hc, hc_regs, ++ qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR); ++ halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR); ++ } else if (hc->ep_is_in) { + qtd->error_count = 0; +- } else { +- DWC_ERROR("Data Toggle Error on OUT transfer," +- "channel %d\n", hc->hc_num); + } + + disable_hc_int(hc_regs, datatglerr); +@@ -2080,6 +2087,8 @@ static void handle_hc_chhltd_intr_dma(dw + handle_hc_babble_intr(hcd, hc, hc_regs, qtd); + } else if (hcint.b.frmovrun) { + handle_hc_frmovrun_intr(hcd, hc, hc_regs, qtd); ++ } else if (hcint.b.datatglerr) { ++ handle_hc_datatglerr_intr(hcd, hc, hc_regs, qtd); + } else if (!out_nak_enh) { + if (hcint.b.nyet) { + /* |