diff options
Diffstat (limited to 'target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-drv.c')
| -rw-r--r-- | target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-drv.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-drv.c b/target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-drv.c new file mode 100644 index 0000000..798fd22 --- /dev/null +++ b/target/linux/adm5120/files-3.18/drivers/usb/host/adm5120-drv.c @@ -0,0 +1,228 @@ +/* + * 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, + }, +}; + |