--- /dev/null
+/*
+ * ADM5120 HCD (Host Controller Driver) for USB
+ *
+ * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This file was derived from: drivers/usb/host/ohci-au1xxx.c
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Written by Christopher Hoover <ch@hpl.hp.com>
+ * Based on fragments of previous driver by Russell King et al.
+ *
+ * Modified for LH7A404 from ahcd-sa1111.c
+ * by Durgesh Pattamatta <pattamattad@sharpsec.com>
+ * Modified for AMD Alchemy Au1xxx
+ * by Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program 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/signal.h>
+
+#include <asm/bootinfo.h>
+#include <asm/mach-adm5120/adm5120_defs.h>
+
+#ifdef DEBUG
+#define HCD_DBG(f, a...) printk(KERN_DEBUG "%s: " f, hcd_name, ## a)
+#else
+#define HCD_DBG(f, a...) do {} while (0)
+#endif
+#define HCD_ERR(f, a...) printk(KERN_ERR "%s: " f, hcd_name, ## a)
+#define HCD_INFO(f, a...) printk(KERN_INFO "%s: " f, hcd_name, ## a)
+
+/*-------------------------------------------------------------------------*/
+
+static int admhc_adm5120_probe(const struct hc_driver *driver,
+ struct platform_device *dev)
+{
+ int retval;
+ struct usb_hcd *hcd;
+ int irq;
+ struct resource *regs;
+
+ /* sanity checks */
+ regs = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ HCD_DBG("no IOMEM resource found\n");
+ return -ENODEV;
+ }
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ HCD_DBG("no IRQ resource found\n");
+ return -ENODEV;
+ }
+
+ hcd = usb_create_hcd(driver, &dev->dev, "ADM5120");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = regs->start;
+ hcd->rsrc_len = regs->end - regs->start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ HCD_DBG("request_mem_region failed\n");
+ retval = -EBUSY;
+ goto err_dev;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ HCD_DBG("ioremap failed\n");
+ retval = -ENOMEM;
+ goto err_mem;
+ }
+
+ admhc_hcd_init(hcd_to_admhcd(hcd));
+
+ retval = usb_add_hcd(hcd, irq, 0);
+ if (retval)
+ goto err_io;
+
+ return 0;
+
+err_io:
+ iounmap(hcd->regs);
+err_mem:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_dev:
+ usb_put_hcd(hcd);
+ return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+static void admhc_adm5120_remove(struct usb_hcd *hcd,
+ struct platform_device *dev)
+{
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+static int admhc_adm5120_start(struct usb_hcd *hcd)
+{
+ struct admhcd *ahcd = hcd_to_admhcd(hcd);
+ int ret;
+
+ ret = admhc_init(ahcd);
+ if (ret < 0) {
+ HCD_ERR("unable to init %s\n", hcd->self.bus_name);
+ goto err;
+ }
+
+ ret = admhc_run(ahcd);
+ if (ret < 0) {
+ HCD_ERR("unable to run %s\n", hcd->self.bus_name);
+ goto err_stop;
+ }
+
+ return 0;
+
+err_stop:
+ admhc_stop(hcd);
+err:
+ return ret;
+}
+
+static const struct hc_driver adm5120_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "ADM5120 built-in USB 1.1 Host Controller",
+ .hcd_priv_size = sizeof(struct admhcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = admhc_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = admhc_adm5120_start,
+ .stop = admhc_stop,
+ .shutdown = admhc_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = admhc_urb_enqueue,
+ .urb_dequeue = admhc_urb_dequeue,
+ .endpoint_disable = admhc_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = admhc_get_frame_number,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = admhc_hub_status_data,
+ .hub_control = admhc_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = admhc_bus_suspend,
+ .bus_resume = admhc_bus_resume,
+#endif
+ .start_port_reset = admhc_start_port_reset,
+};
+
+static int usb_hcd_adm5120_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = admhc_adm5120_probe(&adm5120_hc_driver, pdev);
+
+ return ret;
+}
+
+static int usb_hcd_adm5120_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ admhc_adm5120_remove(hcd, pdev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+/* TODO */
+static int usb_hcd_adm5120_suspend(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+ return 0;
+}
+
+static int usb_hcd_adm5120_resume(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+ return 0;
+}
+#else
+#define usb_hcd_adm5120_suspend NULL
+#define usb_hcd_adm5120_resume NULL
+#endif /* CONFIG_PM */
+
+static struct platform_driver usb_hcd_adm5120_driver = {
+ .probe = usb_hcd_adm5120_probe,
+ .remove = usb_hcd_adm5120_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .suspend = usb_hcd_adm5120_suspend,
+ .resume = usb_hcd_adm5120_resume,
+ .driver = {
+ .name = "adm5120-hcd",
+ .owner = THIS_MODULE,
+ },
+};
+
projects / 15.05 / openwrt.git / blobdiff