1 files changed, 82 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/ehci-imx27.c b/arch/arm/mach-imx/ehci-imx27.c
new file mode 100644
index 000000000000..fa69419eabdd
--- /dev/null
+++ b/arch/arm/mach-imx/ehci-imx27.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#define USBCTRL_OTGBASE_OFFSET  0x600
+
+#define MX27_OTG_SIC_SHIFT      29
+#define MX27_OTG_SIC_MASK       (0x3 << MX27_OTG_SIC_SHIFT)
+#define MX27_OTG_PM_BIT         (1 << 24)
+
+#define MX27_H2_SIC_SHIFT       21
+#define MX27_H2_SIC_MASK        (0x3 << MX27_H2_SIC_SHIFT)
+#define MX27_H2_PM_BIT          (1 << 16)
+#define MX27_H2_DT_BIT          (1 << 5)
+
+#define MX27_H1_SIC_SHIFT       13
+#define MX27_H1_SIC_MASK        (0x3 << MX27_H1_SIC_SHIFT)
+#define MX27_H1_PM_BIT          (1 << 8)
+#define MX27_H1_DT_BIT          (1 << 4)
+
+int mx27_initialize_usb_hw(int port, unsigned int flags)
+{
+        unsigned int v;
+
+        v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+        switch (port) {
+        case 0: /* OTG port */
+                v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT);
+                v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT;
+
+                if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+                        v |= MX27_OTG_PM_BIT;
+                break;
+        case 1: /* H1 port */
+                v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT);
+                v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT;
+
+                if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+                        v |= MX27_H1_PM_BIT;
+
+                if (!(flags & MXC_EHCI_TTL_ENABLED))
+                        v |= MX27_H1_DT_BIT;
+
+                break;
+        case 2: /* H2 port */
+                v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT);
+                v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT;
+
+                if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
+                        v |= MX27_H2_PM_BIT;
+
+                if (!(flags & MXC_EHCI_TTL_ENABLED))
+                        v |= MX27_H2_DT_BIT;
+
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET));
+
+        return 0;
+}
+