linux-kernel - [PATCH 1/2] EHCI : introduce a common ehci

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Date:	Sat,  2 Jul 2011 20:59:45 +0200
From:	Matthieu CASTET <castet.matthieu@...e.fr>
To:	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Cc:	Matthieu CASTET <castet.matthieu@...e.fr>
Subject: [PATCH 1/2] EHCI : introduce a common ehci_setup

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

Signed-off-by: Matthieu CASTET <castet.matthieu@...e.fr>
---
 drivers/usb/host/ehci-hcd.c |   29 +++++++++++++++++++++++++++++
 1 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index f8030ee..f990b0f 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -763,6 +763,35 @@ 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)
-- 
1.7.5.4

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