mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
213 lines
5.0 KiB
Diff
213 lines
5.0 KiB
Diff
--- /dev/null
|
|
+++ b/drivers/usb/host/ehci-cns21xx.c
|
|
@@ -0,0 +1,185 @@
|
|
+/*
|
|
+ * 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(readl(&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
|
|
@@ -1216,6 +1216,11 @@ MODULE_LICENSE ("GPL");
|
|
#define PLATFORM_DRIVER ehci_octeon_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
|
|
@@ -300,6 +300,7 @@ 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.
|
|
|