openwrt/target/linux/cns21xx/patches-3.10/104-cns21xx-usb-ehci-support.patch

--- /dev/null
+++ b/drivers/usb/host/ehci-cns21xx.c
@@ -0,0 +1,130 @@
+/*
+ *  Copyright (c) 2008 Cavium Networks
+ *  Copyright (c) 2010-2013 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  This file is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License, Version 2, as
+ *  published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include <mach/cns21xx.h>
+
+#include "ehci.h"
+
+#define DRIVER_NAME	"cns21xx-ehci"
+
+static const char hcd_name[] = "ehci-cns21xx";
+static struct hc_driver __read_mostly ehci_cns21xx_hc_driver;
+
+static void ehci_cns21xx_init_hc(void)
+{
+	void __iomem *base = (void __iomem *) CNS21XX_EHCI_CONFIG_BASE_VIRT;
+
+	__raw_writel(0x106, base + 0x04);
+	__raw_writel((3 << 5) | 0x2000, base + 0x40);
+	msleep(100);
+}
+
+static int ehci_cns21xx_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	struct ehci_hcd *ehci;
+	struct resource *res;
+	int irq;
+	int ret;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
+			dev_name(&pdev->dev));
+		return -ENODEV;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_dbg(&pdev->dev, "no base address specified for %s\n",
+			dev_name(&pdev->dev));
+		return -EINVAL;
+	}
+
+	hcd = usb_create_hcd(&ehci_cns21xx_hc_driver, &pdev->dev,
+			     dev_name(&pdev->dev));
+	if (!hcd)
+		return -ENOMEM;
+
+	hcd->rsrc_start	= res->start;
+	hcd->rsrc_len	= res->end - res->start + 1;
+
+	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(hcd->regs)) {
+		ret = PTR_ERR(hcd->regs);
+		goto err_put_hcd;
+	}
+
+	ehci_cns21xx_init_hc();
+
+	ehci = hcd_to_ehci(hcd);
+	ehci->caps = hcd->regs;
+
+	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
+	if (ret)
+		goto err_put_hcd;
+
+	platform_set_drvdata(pdev, hcd);
+
+	return 0;
+
+err_put_hcd:
+	usb_put_hcd(hcd);
+
+	return ret;
+}
+
+static int ehci_cns21xx_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 ehci_cns21xx_driver = {
+	.probe		= ehci_cns21xx_probe,
+	.remove		= ehci_cns21xx_remove,
+	.shutdown       = usb_hcd_platform_shutdown,
+	.driver		= {
+		.owner	= THIS_MODULE,
+		.name	= DRIVER_NAME,
+	},
+};
+
+static int __init ehci_cns21xx_init(void)
+{
+	if (usb_disabled())
+		return -ENODEV;
+
+	ehci_init_driver(&ehci_cns21xx_hc_driver, NULL);
+
+	return platform_driver_register(&ehci_cns21xx_driver);
+}
+module_init(ehci_cns21xx_init);
+
+static void __exit ehci_cns21xx_exit(void)
+{
+	platform_driver_unregister(&ehci_cns21xx_driver);
+}
+module_exit(ehci_cns21xx_exit);
+
+MODULE_DESCRIPTION("Cavium Networks CNS21xx built-in EHCI controller driver");
+MODULE_ALIAS("platform:" DRIVER_NAME);
+MODULE_LICENSE("GPL v2");
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -375,6 +375,7 @@ config ARCH_CNS21XX
 	select ARCH_REQUIRE_GPIOLIB
 	select ARM_L1_CACHE_SHIFT_4
 	select USB_ARCH_HAS_OHCI
+	select USB_ARCH_HAS_EHCI
 	help
 	  Support for Cavium Networks CNS21xx family.
 
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -249,6 +249,14 @@ config USB_W90X900_EHCI
 	---help---
 		Enables support for the W90X900 USB controller
 
+config USB_EHCI_CNS21XX
+	tristate "EHCI support for the Cavium CNS21XX SoCs"
+	depends on ARCH_CNS21XX
+	default y
+	help
+	  Enables support for the built-in EHCI controller of the
+	  Cavium CNS21xx SoCs.
+
 config USB_CNS3XXX_EHCI
 	bool "Cavium CNS3XXX EHCI Module (DEPRECATED)"
 	depends on ARCH_CNS3XXX
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_USB_EHCI_HCD_SPEAR)	+= ehci
 obj-$(CONFIG_USB_EHCI_S5P)	+= ehci-s5p.o
 obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
 obj-$(CONFIG_USB_EHCI_MSM)	+= ehci-msm.o
+obj-$(CONFIG_USB_EHCI_CNS21XX)	+= ehci-cns21xx.o
 
 obj-$(CONFIG_USB_OXU210HP_HCD)	+= oxu210hp-hcd.o
 obj-$(CONFIG_USB_ISP116X_HCD)	+= isp116x-hcd.o