USB: add support for SuperH OHCI

add support for SuperH OHCI.

supported CPU are:
 - SH7720
 - SH7721
 - SH7763

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 154 insertions, 0 deletions

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 8d48d973efcb..755823cdf62a 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -42,6 +42,10 @@ config USB_ARCH_HAS_OHCI
         default y if PPC_MPC52xx
         # MIPS:
         default y if SOC_AU1X00
+        # SH:
+        default y if CPU_SUBTYPE_SH7720
+        default y if CPU_SUBTYPE_SH7721
+        default y if CPU_SUBTYPE_SH7763
         # more:
         default PCI
 
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 8dd5d25f2f06..b8ed84d5406d 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1029,6 +1029,13 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         usb_hcd_pnx4008_driver
 #endif
 
+#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+    defined(CONFIG_CPU_SUBTYPE_SH7763)
+#include "ohci-sh.c"
+#define PLATFORM_DRIVER         ohci_hcd_sh_driver
+#endif
+
 
 #ifdef CONFIG_USB_OHCI_HCD_PPC_OF
 #include "ohci-ppc-of.c"
diff --git a/drivers/usb/host/ohci-sh.c b/drivers/usb/host/ohci-sh.c
new file mode 100644
index 000000000000..5309ac039e15
--- /dev/null
+++ b/drivers/usb/host/ohci-sh.c
@@ -0,0 +1,143 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <linux/platform_device.h>
+
+static int ohci_sh_start(struct usb_hcd *hcd)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+        ohci_hcd_init(ohci);
+        ohci_init(ohci);
+        ohci_run(ohci);
+        hcd->state = HC_STATE_RUNNING;
+        return 0;
+}
+
+static const struct hc_driver ohci_sh_hc_driver = {
+        .description =          hcd_name,
+        .product_desc =         "SuperH OHCI",
+        .hcd_priv_size =        sizeof(struct ohci_hcd),
+
+        /*
+         * generic hardware linkage
+         */
+        .irq =                  ohci_irq,
+        .flags =                HCD_USB11 | HCD_MEMORY,
+
+        /*
+         * basic lifecycle operations
+         */
+        .start =                ohci_sh_start,
+        .stop =                 ohci_stop,
+        .shutdown =             ohci_shutdown,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue =          ohci_urb_enqueue,
+        .urb_dequeue =          ohci_urb_dequeue,
+        .endpoint_disable =     ohci_endpoint_disable,
+
+        /*
+         * scheduling support
+         */
+        .get_frame_number =     ohci_get_frame,
+
+        /*
+         * root hub support
+         */
+        .hub_status_data =      ohci_hub_status_data,
+        .hub_control =          ohci_hub_control,
+        .hub_irq_enable =       ohci_rhsc_enable,
+#ifdef  CONFIG_PM
+        .bus_suspend =          ohci_bus_suspend,
+        .bus_resume =           ohci_bus_resume,
+#endif
+        .start_port_reset =     ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+#define resource_len(r) (((r)->end - (r)->start) + 1)
+static int ohci_hcd_sh_probe(struct platform_device *pdev)
+{
+        struct resource *res = NULL;
+        struct usb_hcd *hcd = NULL;
+        int irq = -1;
+        int ret;
+
+        if (usb_disabled())
+                return -ENODEV;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                err("platform_get_resource error.");
+                return -ENODEV;
+        }
+
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                err("platform_get_irq error.");
+                return -ENODEV;
+        }
+
+        /* initialize hcd */
+        hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
+        if (!hcd) {
+                err("Failed to create hcd");
+                return -ENOMEM;
+        }
+
+        hcd->regs = (void __iomem *)res->start;
+        hcd->rsrc_start = res->start;
+        hcd->rsrc_len = resource_len(res);
+        ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+        if (ret != 0) {
+                err("Failed to add hcd");
+                usb_put_hcd(hcd);
+                return ret;
+        }
+
+        return ret;
+}
+
+static int ohci_hcd_sh_remove(struct platform_device *pdev)
+{
+        struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+        usb_remove_hcd(hcd);
+        usb_put_hcd(hcd);
+
+        return 0;
+}
+
+static struct platform_driver ohci_hcd_sh_driver = {
+        .probe          = ohci_hcd_sh_probe,
+        .remove         = ohci_hcd_sh_remove,
+        .shutdown       = usb_hcd_platform_shutdown,
+        .driver         = {
+                .name   = "sh_ohci",
+                .owner  = THIS_MODULE,
+        },
+};
+