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,
+	},
+};
+