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ehci-hcd: program asynclistaddr before every transfer

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Move or_asynclistaddr programming to ehci_submit_async()
function to make sure queue head is properly programmed
before every transfer. This solves the problem with changing
qh address.

Also remove unneeded qh_list->qh_link reprogramming at the
end of transfer.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
This commit is contained in:
Ilya Yanok 2012-07-15 22:12:08 +00:00 committed by Marek Vasut
parent de4d11355f
commit c7701af59f
1 changed files with 3 additions and 5 deletions
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8
drivers/usb/host/ehci-hcd.c
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@ -348,6 +348,9 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
flush_dcache_range((uint32_t)&qh, (uint32_t)&qh + sizeof(struct QH));
flush_dcache_range((uint32_t)qtd, (uint32_t)qtd + sizeof(qtd));
/* Set async. queue head pointer. */
ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list);
usbsts = ehci_readl(&hcor->or_usbsts);
ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
@ -403,8 +406,6 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
goto fail;
}
qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
token = hc32_to_cpu(qh.qh_overlay.qt_token);
if (!(token & 0x80)) {
debug("TOKEN=%#x\n", token);
@ -741,9 +742,6 @@ int usb_lowlevel_init(void)
qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40);
/* Set async. queue head pointer. */
ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list);
reg = ehci_readl(&hccr->cr_hcsparams);
descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);