1 files changed, 165 insertions, 0 deletions

diff --git a/target/linux/mcs814x/files-3.3/drivers/usb/host/ehci-mcs814x.c b/target/linux/mcs814x/files-3.3/drivers/usb/host/ehci-mcs814x.c
new file mode 100644
index 000000000..183155e37
--- /dev/null
+++ b/target/linux/mcs814x/files-3.3/drivers/usb/host/ehci-mcs814x.c
@@ -0,0 +1,165 @@
+/*
+ * MCS814X EHCI Host Controller Driver
+ *
+ * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+#define MCS814X_EHCI_CAPS_OFFSET	0x68
+
+static int mcs814x_ehci_init(struct usb_hcd *hcd)
+{
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	int retval = 0;
+
+	ehci->caps = hcd->regs + MCS814X_EHCI_CAPS_OFFSET;
+	ehci->regs = hcd->regs
+		+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+	ehci_reset(ehci);
+
+	retval = ehci_init(hcd);
+	if (retval) {
+		pr_err("ehci_init failed\n");
+		return retval;
+	}
+
+	ehci_port_power(ehci, 0);
+
+	return retval;
+}
+
+static const struct hc_driver mcs814x_ehci_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "MCS814X EHCI Host Controller",
+	.hcd_priv_size		= sizeof(struct ehci_hcd),
+	.irq			= ehci_irq,
+	.flags			= HCD_MEMORY | HCD_USB2,
+	.reset			= mcs814x_ehci_init,
+	.start			= ehci_run,
+	.stop			= ehci_stop,
+	.shutdown		= ehci_shutdown,
+	.urb_enqueue		= ehci_urb_enqueue,
+	.urb_dequeue		= ehci_urb_dequeue,
+	.endpoint_disable	= ehci_endpoint_disable,
+	.get_frame_number	= ehci_get_frame,
+	.hub_status_data	= ehci_hub_status_data,
+	.hub_control		= ehci_hub_control,
+#if defined(CONFIG_PM)
+	.bus_suspend		= ehci_bus_suspend,
+	.bus_resume		= ehci_bus_resume,
+#endif
+	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
+};
+
+static int mcs814x_ehci_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	const struct hc_driver *driver = &mcs814x_ehci_hc_driver;
+	struct resource *res;
+	int irq;
+	int retval;
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res) {
+		dev_err(&pdev->dev,
+			"Found HC with no IRQ. Check %s setup!\n",
+			dev_name(&pdev->dev));
+		return -ENODEV;
+	}
+	irq = res->start;
+
+	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+
+	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+	if (!hcd) {
+		retval = -ENOMEM;
+		goto fail_create_hcd;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev,
+			"Found HC with no register addr. Check %s setup!\n",
+			dev_name(&pdev->dev));
+		retval = -ENODEV;
+		goto fail_request_resource;
+	}
+	hcd->rsrc_start = res->start;
+	hcd->rsrc_len = resource_size(res);
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+				driver->description)) {
+		dev_dbg(&pdev->dev, "controller already in use\n");
+		retval = -EBUSY;
+		goto fail_request_resource;
+	}
+
+	hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+	if (hcd->regs == NULL) {
+		dev_dbg(&pdev->dev, "error mapping memory\n");
+		retval = -EFAULT;
+		goto fail_ioremap;
+	}
+
+	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+	if (retval)
+		goto fail_add_hcd;
+
+	dev_info(&pdev->dev, "added MCS814X EHCI driver\n");
+
+	return retval;
+
+fail_add_hcd:
+	iounmap(hcd->regs);
+fail_ioremap:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+fail_request_resource:
+	usb_put_hcd(hcd);
+fail_create_hcd:
+	dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
+	return retval;
+}
+
+static int mcs814x_ehci_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);
+
+	return 0;
+}
+
+MODULE_ALIAS("platform:mcs814x-ehci");
+
+static const struct of_device_id mcs814x_ehci_id[] = {
+	{ .compatible = "moschip,mcs814x-ehci" },
+	{ .compatible = "usb-ehci" },
+	{ /* sentinel */ },
+};
+
+static struct platform_driver mcs814x_ehci_driver = {
+	.probe = mcs814x_ehci_probe,
+	.remove = mcs814x_ehci_remove,
+	.driver = {
+		.name = "mcs814x-ehci",
+		.of_match_table = mcs814x_ehci_id,
+	},
+};