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-rw-r--r--drivers/usb/host/ohci-pci.c17
-rw-r--r--drivers/usb/host/ohci-q.c13
-rw-r--r--drivers/usb/host/ohci.h1
3 files changed, 26 insertions, 5 deletions
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index f30118b5f9a..57fd07d0054 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -54,7 +54,7 @@ ohci_pci_start (struct usb_hcd *hcd)
if (pdev->vendor == PCI_VENDOR_ID_AMD
&& pdev->device == 0x740c) {
ohci->flags = OHCI_QUIRK_AMD756;
- ohci_info (ohci, "AMD756 erratum 4 workaround\n");
+ ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
// also somewhat erratum 10 (suspend/resume issues)
}
@@ -68,7 +68,7 @@ ohci_pci_start (struct usb_hcd *hcd)
*/
else if (pdev->vendor == PCI_VENDOR_ID_OPTI
&& pdev->device == 0xc861) {
- ohci_info (ohci,
+ ohci_dbg (ohci,
"WARNING: OPTi workarounds unavailable\n");
}
@@ -84,9 +84,20 @@ ohci_pci_start (struct usb_hcd *hcd)
if (b && b->device == PCI_DEVICE_ID_NS_87560_LIO
&& b->vendor == PCI_VENDOR_ID_NS) {
ohci->flags |= OHCI_QUIRK_SUPERIO;
- ohci_info (ohci, "Using NSC SuperIO setup\n");
+ ohci_dbg (ohci, "Using NSC SuperIO setup\n");
}
}
+
+ /* Check for Compaq's ZFMicro chipset, which needs short
+ * delays before control or bulk queues get re-activated
+ * in finish_unlinks()
+ */
+ else if (pdev->vendor == PCI_VENDOR_ID_COMPAQ
+ && pdev->device == 0xa0f8) {
+ ohci->flags |= OHCI_QUIRK_ZFMICRO;
+ ohci_dbg (ohci,
+ "enabled Compaq ZFMicro chipset quirk\n");
+ }
}
/* NOTE: there may have already been a first reset, to
diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index c90114a7727..e372306ed0d 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -1021,6 +1021,8 @@ rescan_this:
if (ohci->ed_controltail) {
command |= OHCI_CLF;
+ if (ohci->flags & OHCI_QUIRK_ZFMICRO)
+ mdelay(1);
if (!(ohci->hc_control & OHCI_CTRL_CLE)) {
control |= OHCI_CTRL_CLE;
ohci_writel (ohci, 0,
@@ -1029,6 +1031,8 @@ rescan_this:
}
if (ohci->ed_bulktail) {
command |= OHCI_BLF;
+ if (ohci->flags & OHCI_QUIRK_ZFMICRO)
+ mdelay(1);
if (!(ohci->hc_control & OHCI_CTRL_BLE)) {
control |= OHCI_CTRL_BLE;
ohci_writel (ohci, 0,
@@ -1039,12 +1043,17 @@ rescan_this:
/* CLE/BLE to enable, CLF/BLF to (maybe) kickstart */
if (control) {
ohci->hc_control |= control;
+ if (ohci->flags & OHCI_QUIRK_ZFMICRO)
+ mdelay(1);
ohci_writel (ohci, ohci->hc_control,
&ohci->regs->control);
}
- if (command)
+ if (command) {
+ if (ohci->flags & OHCI_QUIRK_ZFMICRO)
+ mdelay(1);
ohci_writel (ohci, command, &ohci->regs->cmdstatus);
- }
+ }
+ }
}
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 2ba6e2b0210..22e1ac138ac 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -396,6 +396,7 @@ struct ohci_hcd {
#define OHCI_QUIRK_SUPERIO 0x02 /* natsemi */
#define OHCI_QUIRK_INITRESET 0x04 /* SiS, OPTi, ... */
#define OHCI_BIG_ENDIAN 0x08 /* big endian HC */
+#define OHCI_QUIRK_ZFMICRO 0x10 /* Compaq ZFMicro chipset*/
// there are also chip quirks/bugs in init logic
};