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--- /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
|
