diff options
author | Jan Andersson <jan@gaisler.com> | 2011-05-03 14:11:57 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-03 14:43:21 -0400 |
commit | c430131a02d677aa708f56342c1565edfdacb3c0 (patch) | |
tree | 15e9930a2512e4b05b7cfd4684f36dd26b0b990f /drivers/usb/host/ehci-cns3xxx.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-cns3xxx.c')
-rw-r--r-- | drivers/usb/host/ehci-cns3xxx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-cns3xxx.c b/drivers/usb/host/ehci-cns3xxx.c index 708a05b5d258..d41745c6f0c4 100644 --- a/drivers/usb/host/ehci-cns3xxx.c +++ b/drivers/usb/host/ehci-cns3xxx.c | |||
@@ -34,7 +34,7 @@ static int cns3xxx_ehci_init(struct usb_hcd *hcd) | |||
34 | 34 | ||
35 | ehci->caps = hcd->regs; | 35 | ehci->caps = hcd->regs; |
36 | ehci->regs = hcd->regs | 36 | ehci->regs = hcd->regs |
37 | + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); | 37 | + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); |
38 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); | 38 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
39 | 39 | ||
40 | hcd->has_tt = 0; | 40 | hcd->has_tt = 0; |