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[PATCH] USB: OHCI on Compaq Aramada 7400

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This adds a quirk to the OHCI driver that lets it work with an old
Compaq implementation.  It also removes some needless strings from
the non-debug version of the driver.

Signed-off-by: Chris Clayton <chris_clayton@f1internet.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell 2005-04-18 17:39:30 -07:00 committed by Greg K-H
parent a2fe20129e
commit 0e4987639a
3 changed files with 26 additions and 5 deletions
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17
drivers/usb/host/ohci-pci.c
View File

@ -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

13
drivers/usb/host/ohci-q.c
View File

@ -1021,6 +1021,8 @@ finish_unlinks (struct ohci_hcd *ohci, u16 tick, struct pt_regs *regs)
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 @@ finish_unlinks (struct ohci_hcd *ohci, u16 tick, struct pt_regs *regs)
}
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 @@ finish_unlinks (struct ohci_hcd *ohci, u16 tick, struct pt_regs *regs)
/* 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);
}
}
}
}

1
drivers/usb/host/ohci.h
View File

@ -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
};