diff options
| author | Jan Andersson <jan@gaisler.com> | 2011-05-03 20:11:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-03 11:43:21 -0700 |
| commit | c430131a02d677aa708f56342c1565edfdacb3c0 (patch) | |
| tree | 15e9930a2512e4b05b7cfd4684f36dd26b0b990f /drivers/usb/host/ehci-spear.c | |
| parent | 2ce2c3ac8852cfc8f74f4b7b9a2c4cdff007f96a (diff) | |
USB: EHCI: Support controllers with big endian capability regs
The two first HC capability registers (CAPLENGTH and HCIVERSION)
are defined as one 8-bit and one 16-bit register. Most HC
implementations have selected to treat these registers as part
of a 32-bit register, giving the same layout for both big and
small endian systems.
This patch adds a new quirk, big_endian_capbase, to support
controllers with big endian register interfaces that treat
HCIVERSION and CAPLENGTH as individual registers.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci-spear.c')
| -rw-r--r-- | drivers/usb/host/ehci-spear.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c index 75c00873443d..dbf1e4ef3c17 100644 --- a/drivers/usb/host/ehci-spear.c +++ b/drivers/usb/host/ehci-spear.c @@ -38,7 +38,7 @@ static int ehci_spear_setup(struct usb_hcd *hcd) /* registers start at offset 0x0 */ ehci->caps = hcd->regs; - ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci, + ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); /* cache this readonly data; minimize chip reads */ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |