Alek Du wrote:
> From 6dba6524d4c79813e52706a6123eb357cbc1bbda Mon Sep 17 00:00:00 2001
> From: Alek Du <alek.du@xxxxxxxxx>
> Date: Wed, 10 Jun 2009 15:20:21 +0800
> Subject: [PATCH] EHCI: Support Intel Moorestown MPH and OTG host
>
> The Intel Moorestown platform has EHCI MPH and EHCI OTG host. This patch adds
> PCI probe part for them. The HNP part and SRAM part will be added in another
> patches. This patch depends on the OTG transceive and OTG client patch from Hang
> Yuan that should be accepted already.
>
> Signed-off-by: Jacob Pan <jacob.jun.pan@xxxxxxxxx>
> Signed-off-by: Alek Du <alek.du@xxxxxxxxx>
> ---
> drivers/usb/Kconfig | 4 +-
> drivers/usb/host/ehci-hcd.c | 22 ++++++
> drivers/usb/host/ehci-hub.c | 46 +++++++++++
> drivers/usb/host/ehci-pci.c | 175 +++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 245 insertions(+), 2 deletions(-)
>
[...]
> diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
> index 5cc5cbb..63ced4b 100644
> --- a/drivers/usb/host/ehci-hub.c
> +++ b/drivers/usb/host/ehci-hub.c
> @@ -112,6 +112,11 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
> int port;
> int mask;
> u32 __iomem *hostpc_reg = NULL;
> +#ifdef CONFIG_USB_LANGWELL_OTG
> + struct otg_transceiver *otg;
> + struct langwell_otg *iotg;
> + struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
> +#endif
>
> ehci_dbg(ehci, "suspend root hub\n");
>
> @@ -208,6 +213,25 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
> ehci_readl(ehci, &ehci->regs->intr_enable);
>
> ehci->next_statechange = jiffies + msecs_to_jiffies(10);
> +#ifdef CONFIG_USB_LANGWELL_OTG
> + otg = otg_get_transceiver();
> + if (otg == NULL) {
> + printk(KERN_ERR "%s Failed to get otg transceiver\n", __func__);
> + spin_unlock_irq(&ehci->lock);
> + return -EINVAL;
> + }
> + iotg = container_of(otg, struct langwell_otg, otg);
> + if (!strcmp(dev_name(&pdev->dev), dev_name(&iotg->pdev->dev))) {
> + printk(KERN_INFO "%s OTG HNP update suspend\n", __func__);
> + if (iotg->otg.default_a == 1)
> + iotg->hsm.a_suspend_req = 1;
> + else
> + iotg->hsm.b_bus_req = 0;
> + langwell_update_transceiver();
> +
> + }
> + otg_put_transceiver(otg);
> +#endif
Will this part of code work even on NON langwell USB hosts when
langwell support (CONFIG_USB_LANGWELL_OTG) will be enabled?
> spin_unlock_irq (&ehci->lock);
> return 0;
> }
--
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