diff options
Diffstat (limited to 'drivers/firewire/ohci.c')
| -rw-r--r-- | drivers/firewire/ohci.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index e934713f3fc..6a27a0ef3b6 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -2431,7 +2431,7 @@ static int __devinit pci_probe(struct pci_dev *dev, const struct pci_device_id *ent) { struct fw_ohci *ohci; - u32 bus_options, max_receive, link_speed, version; + u32 bus_options, max_receive, link_speed, version, link_enh; u64 guid; int i, err, n_ir, n_it; size_t size; @@ -2484,6 +2484,23 @@ static int __devinit pci_probe(struct pci_dev *dev, if (param_quirks) ohci->quirks = param_quirks; + /* TI OHCI-Lynx and compatible: set recommended configuration bits. */ + if (dev->vendor == PCI_VENDOR_ID_TI) { + pci_read_config_dword(dev, PCI_CFG_TI_LinkEnh, &link_enh); + + /* adjust latency of ATx FIFO: use 1.7 KB threshold */ + link_enh &= ~TI_LinkEnh_atx_thresh_mask; + link_enh |= TI_LinkEnh_atx_thresh_1_7K; + + /* use priority arbitration for asynchronous responses */ + link_enh |= TI_LinkEnh_enab_unfair; + + /* required for aPhyEnhanceEnable to work */ + link_enh |= TI_LinkEnh_enab_accel; + + pci_write_config_dword(dev, PCI_CFG_TI_LinkEnh, link_enh); + } + ar_context_init(&ohci->ar_request_ctx, ohci, OHCI1394_AsReqRcvContextControlSet); |