EHCI : introduce a common ehci_setup

commit 2093c6b49c8f1dc581d8953aca71297d4cace55e upstream.

This allow to clean duplicated code in most of SOC driver.

Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
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 f72ae0b6ee7f27ec1f2122b8738d0799fbd7aa60..9eddb9c69cc4a26d8623ec58b4185cc66f84579e 100644 (file)
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -768,6 +768,35 @@ static int ehci_run (struct usb_hcd *hcd)
        return 0;
 }
 
+static int __maybe_unused ehci_setup (struct usb_hcd *hcd)
+{
+       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+       int retval;
+
+       ehci->regs = (void __iomem *)ehci->caps +
+           HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+       dbg_hcs_params(ehci, "reset");
+       dbg_hcc_params(ehci, "reset");
+
+       /* cache this readonly data; minimize chip reads */
+       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+       ehci->sbrn = HCD_USB2;
+
+       retval = ehci_halt(ehci);
+       if (retval)
+               return retval;
+
+       /* data structure init */
+       retval = ehci_init(hcd);
+       if (retval)
+               return retval;
+
+       ehci_reset(ehci);
+
+       return 0;
+}
+
 /*-------------------------------------------------------------------------*/
 
 static irqreturn_t ehci_irq (struct usb_hcd *hcd)