diff options
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/uhci-hcd.c | 11 | ||||
| -rw-r--r-- | drivers/usb/host/uhci-hcd.h | 4 | ||||
| -rw-r--r-- | drivers/usb/host/uhci-hub.c | 6 |
3 files changed, 17 insertions, 4 deletions
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 83344d688ff0..214851a6244f 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -546,6 +546,17 @@ static int uhci_init(struct usb_hcd *hcd) } uhci->rh_numports = port; + /* Intel controllers report the OverCurrent bit active on. + * VIA controllers report it active off, so we'll adjust the + * bit value. (It's not standardized in the UHCI spec.) + */ + if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_VIA) + uhci->oc_low = 1; + + /* HP's server management chip requires a longer port reset delay. */ + if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_HP) + uhci->wait_for_hp = 1; + /* Kick BIOS off this hardware and reset if the controller * isn't already safely quiescent. */ diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h index 49bf2790f9c2..f86db61cf085 100644 --- a/drivers/usb/host/uhci-hcd.h +++ b/drivers/usb/host/uhci-hcd.h @@ -415,6 +415,10 @@ struct uhci_hcd { struct timer_list fsbr_timer; /* For turning off FBSR */ + /* Silicon quirks */ + unsigned int oc_low:1; /* OverCurrent bit active low */ + unsigned int wait_for_hp:1; /* Wait for HP port reset */ + /* Support for port suspend/resume/reset */ unsigned long port_c_suspend; /* Bit-arrays of ports */ unsigned long resuming_ports; diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c index 6d59c0f77f25..75418265488d 100644 --- a/drivers/usb/host/uhci-hub.c +++ b/drivers/usb/host/uhci-hub.c @@ -149,8 +149,7 @@ static void uhci_check_ports(struct uhci_hcd *uhci) /* HP's server management chip requires * a longer delay. */ - if (to_pci_dev(uhci_dev(uhci))->vendor == - PCI_VENDOR_ID_HP) + if (uhci->wait_for_hp) wait_for_HP(port_addr); /* If the port was enabled before, turning @@ -266,8 +265,7 @@ static int uhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, * VIA controllers report it active off, so we'll adjust the * bit value. (It's not standardized in the UHCI spec.) */ - if (to_pci_dev(hcd->self.controller)->vendor == - PCI_VENDOR_ID_VIA) + if (uhci->oc_low) status ^= USBPORTSC_OC; /* UHCI doesn't support C_RESET (always false) */ |
