From 6dbd682b7c6d58916096616cdf94852641bc09d9 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Tue, 1 May 2007 09:29:37 -0700 Subject: 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 Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hcd.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/usb/host/ehci-hcd.c') diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 566badb05b34..99ab31e9778b 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -526,12 +526,12 @@ static int ehci_init(struct usb_hcd *hcd) * 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) -- cgit