--- /dev/null
+--- /dev/null
++++ b/drivers/usb/host/ehci-cns21xx.c
+@@ -0,0 +1,186 @@
++/*
++ * Copyright (c) 2008 Cavium Networks
++ * Copyright (c) 2010 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/platform_device.h>
++#include <linux/irq.h>
++
++#include <mach/cns21xx.h>
++
++#define DRIVER_NAME "cns21xx-ehci"
++
++static int cns21xx_ehci_reset(struct usb_hcd *hcd)
++{
++ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
++ int ret;
++
++ ret = ehci_halt(ehci);
++ if (ret)
++ return ret;
++
++ ret = ehci_init(hcd);
++ if (ret)
++ return ret;
++
++ ehci_reset(ehci);
++ ehci_port_power(ehci, 0);
++
++ return 0;
++}
++
++static const struct hc_driver ehci_cns21xx_hc_driver = {
++ .description = hcd_name,
++ .product_desc = DRIVER_NAME,
++ .hcd_priv_size = sizeof(struct ehci_hcd),
++
++ /*
++ * generic hardware linkage
++ */
++ .irq = ehci_irq,
++ .flags = HCD_MEMORY | HCD_USB2,
++
++ /*
++ * basic lifecycle operations
++ */
++ .reset = cns21xx_ehci_reset,
++ .start = ehci_run,
++ .stop = ehci_stop,
++ .shutdown = ehci_shutdown,
++
++ /*
++ * managing i/o requests and associated device resources
++ */
++ .urb_enqueue = ehci_urb_enqueue,
++ .urb_dequeue = ehci_urb_dequeue,
++ .endpoint_disable = ehci_endpoint_disable,
++ .endpoint_reset = ehci_endpoint_reset,
++
++ /*
++ * scheduling support
++ */
++ .get_frame_number = ehci_get_frame,
++
++ /*
++ * root hub support
++ */
++ .hub_status_data = ehci_hub_status_data,
++ .hub_control = ehci_hub_control,
++ .relinquish_port = ehci_relinquish_port,
++ .port_handed_over = ehci_port_handed_over,
++
++ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
++};
++
++static void cns21xx_ehci_init_hc(void)
++{
++ __raw_writel(0x106, CNS21XX_EHCI_CONFIG_BASE_VIRT + 0x04);
++ __raw_writel((3 << 5) | 0x2000, CNS21XX_EHCI_CONFIG_BASE_VIRT + 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;
++
++ if (usb_disabled())
++ return -ENODEV;
++
++ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
++ if (!res) {
++ dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
++ dev_name(&pdev->dev));
++ return -ENODEV;
++ }
++ irq = res->start;
++
++ hcd = usb_create_hcd(&ehci_cns21xx_hc_driver, &pdev->dev,
++ dev_name(&pdev->dev));
++ if (!hcd)
++ return -ENOMEM;
++
++ 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));
++ ret = -ENODEV;
++ goto err_put_hcd;
++ }
++ hcd->rsrc_start = res->start;
++ hcd->rsrc_len = res->end - res->start + 1;
++
++ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
++ dev_dbg(&pdev->dev, "controller already in use\n");
++ ret = -EBUSY;
++ goto err_put_hcd;
++ }
++
++ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
++ if (!hcd->regs) {
++ dev_dbg(&pdev->dev, "error mapping memory\n");
++ ret = -EFAULT;
++ goto err_release_region;
++ }
++
++ cns21xx_ehci_init_hc();
++
++ ehci = hcd_to_ehci(hcd);
++
++ ehci->caps = hcd->regs;
++ ehci->regs = hcd->regs +
++ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
++ dbg_hcs_params(ehci, "reset");
++ dbg_hcc_params(ehci, "reset");
++
++ /* cache this readonly data; minimize chip reads */
++ ehci->hcs_params = readl(&ehci->caps->hcs_params);
++ ehci->sbrn = 0x20;
++
++ ret = usb_add_hcd(hcd, CNS21XX_IRQ_EHCI, IRQF_DISABLED);
++ if (ret)
++ goto err_unmap;
++
++ platform_set_drvdata(pdev, hcd);
++ return 0;
++
++err_unmap:
++ iounmap(hcd->regs);
++err_release_region:
++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
++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);
++ iounmap(hcd->regs);
++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
++ usb_put_hcd(hcd);
++ platform_set_drvdata(pdev, NULL);
++
++ 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,
++ },
++};
++
++MODULE_ALIAS("platform:" DRIVER_NAME);
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -1329,6 +1329,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER ehci_xls_driver
+ #endif
+
++#ifdef CONFIG_ARCH_CNS21XX
++#include "ehci-cns21xx.c"
++#define PLATFORM_DRIVER ehci_cns21xx_driver
++#endif
++
+ #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
+ !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
+ !defined(XILINX_OF_PLATFORM_DRIVER)
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -364,6 +364,7 @@ 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.
+
projects / openwrt.git / blobdiff