surprise :p

SVN-Revision: 11894

1 files changed, 200 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/drivers/usb/host/ohci-ar71xx.c b/target/linux/ar71xx/files/drivers/usb/host/ohci-ar71xx.c
new file mode 100644
index 0000000000..7af7fafb78
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/usb/host/ohci-ar71xx.c
@@ -0,0 +1,200 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * Copyright (C) 2007 Atheros Communications, Inc.
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Bus Glue for Atheros AR71xx built-in OHCI controller
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+extern int usb_disabled(void);
+
+static void ar71xx_start_ohci(struct platform_device *pdev)
+{
+}
+
+static void ar71xx_stop_ohci(struct platform_device *pdev)
+{
+	/*
+	 * TODO: implement
+	 */
+}
+
+int usb_hcd_ar71xx_probe(const struct hc_driver *driver,
+			 struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	struct resource *res;
+	int irq;
+	int ret;
+
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res) {
+		dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
+			pdev->dev.bus_id);
+		return -ENODEV;
+	}
+	irq = res->start;
+
+	hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
+	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",
+			pdev->dev.bus_id);
+		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;
+	}
+
+	ar71xx_start_ohci(pdev);
+	ohci_hcd_init(hcd_to_ohci(hcd));
+
+	ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+	if (ret)
+		goto err_stop_hcd;
+
+	return 0;
+
+err_stop_hcd:
+	ar71xx_stop_ohci(pdev);
+	iounmap(hcd->regs);
+err_release_region:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_put_hcd:
+	usb_put_hcd(hcd);
+	return ret;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_ar71xx_remove - shutdown processing for AR71xx HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_ar71xx_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+void usb_hcd_ar71xx_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+{
+	usb_remove_hcd(hcd);
+	ar71xx_stop_ohci(pdev);
+	iounmap(hcd->regs);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+}
+
+static int __devinit ohci_ar71xx_start(struct usb_hcd *hcd)
+{
+	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);
+	int ret;
+
+	ret = ohci_init(ohci);
+	if (ret < 0)
+		return ret;
+
+	ret = ohci_run(ohci);
+	if (ret < 0)
+		goto err;
+
+	return 0;
+
+err:
+	ohci_stop(hcd);
+	return ret;
+}
+
+static const struct hc_driver ohci_ar71xx_hc_driver = {
+	.description	= hcd_name,
+	.product_desc	= "Atheros AR71xx built-in OHCI controller",
+	.hcd_priv_size	= sizeof(struct ohci_hcd),
+
+	/*
+	 * generic hardware linkage
+	 */
+	.irq		= ohci_irq,
+	.flags		= HCD_USB11 | HCD_MEMORY,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.start		= ohci_ar71xx_start,
+	.stop		= ohci_stop,
+	.shutdown	= ohci_shutdown,
+
+	/*
+	 * managing i/o requests and associated device resources
+	 */
+	.urb_enqueue		= ohci_urb_enqueue,
+	.urb_dequeue		= ohci_urb_dequeue,
+	.endpoint_disable	= ohci_endpoint_disable,
+
+	/*
+	 * scheduling support
+	 */
+	.get_frame_number	= ohci_get_frame,
+
+	/*
+	 * root hub support
+	 */
+	.hub_status_data	= ohci_hub_status_data,
+	.hub_control		= ohci_hub_control,
+	.start_port_reset	= ohci_start_port_reset,
+};
+
+static int ohci_hcd_ar71xx_drv_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = -ENODEV;
+	if (!usb_disabled())
+		ret = usb_hcd_ar71xx_probe(&ohci_ar71xx_hc_driver, pdev);
+
+	return ret;
+}
+
+static int ohci_hcd_ar71xx_drv_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+	usb_hcd_ar71xx_remove(hcd, pdev);
+	return 0;
+}
+
+static struct platform_driver ohci_hcd_ar71xx_driver = {
+	.probe		= ohci_hcd_ar71xx_drv_probe,
+	.remove		= ohci_hcd_ar71xx_drv_remove,
+	.shutdown	= usb_hcd_platform_shutdown,
+	.driver		= {
+		.name	= "ar71xx-ohci",
+		.owner	= THIS_MODULE,
+	},
+};
+
+MODULE_ALIAS("ar71xx-ohci");