USB: EHCI support for big-endian descriptors
This patch implements supports for EHCI controllers whose in-memory
data structures are represented in big-endian format. This is needed
(unfortunately) for the AMCC PPC440EPx SoC EHCI controller; the EHCI
spec doesn't specify little-endian format, although that's what most
other implementations use.
The guts of the patch are to introduce the hc32 type and change all
references from le32 to hc32. All access routines are converted from
cpu_to_le32(...) to cpu_to_hc32(ehci, ...) and similar for the other
"direction". (This is the same approach used with OHCI.)
David fixed:
Whitespace fixes; refresh against ehci cpufreq patch; move glue
for that PPC driver to the patch adding it; fix free symbol
capture bugs in modified "constant" macros; and make "hc32" etc
be "le32" unless we really need the BE options, so "sparse" can
do some real good.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 566badb..99ab31e 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -526,12 +526,12 @@
* from automatically advancing to the next td after short reads.
*/
ehci->async->qh_next.qh = NULL;
- ehci->async->hw_next = QH_NEXT(ehci->async->qh_dma);
- ehci->async->hw_info1 = cpu_to_le32(QH_HEAD);
- ehci->async->hw_token = cpu_to_le32(QTD_STS_HALT);
- ehci->async->hw_qtd_next = EHCI_LIST_END;
+ ehci->async->hw_next = QH_NEXT(ehci, ehci->async->qh_dma);
+ ehci->async->hw_info1 = cpu_to_hc32(ehci, QH_HEAD);
+ ehci->async->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT);
+ ehci->async->hw_qtd_next = EHCI_LIST_END(ehci);
ehci->async->qh_state = QH_STATE_LINKED;
- ehci->async->hw_alt_next = QTD_NEXT(ehci->async->dummy->qtd_dma);
+ ehci->async->hw_alt_next = QTD_NEXT(ehci, ehci->async->dummy->qtd_dma);
/* clear interrupt enables, set irq latency */
if (log2_irq_thresh < 0 || log2_irq_thresh > 6)