diff options
Diffstat (limited to 'drivers/usb/host/ohci-au1xxx.c')
| -rw-r--r-- | drivers/usb/host/ohci-au1xxx.c | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c deleted file mode 100644 index 24e23c5783d..00000000000 --- a/drivers/usb/host/ohci-au1xxx.c +++ /dev/null @@ -1,363 +0,0 @@ -/* - * OHCI HCD (Host Controller Driver) for USB. - * - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * (C) Copyright 2002 Hewlett-Packard Company - * - * Bus Glue for AMD Alchemy Au1xxx - * - * Written by Christopher Hoover <ch@hpl.hp.com> - * Based on fragments of previous driver by Rusell King et al. - * - * Modified for LH7A404 from ohci-sa1111.c - * by Durgesh Pattamatta <pattamattad@sharpsec.com> - * Modified for AMD Alchemy Au1xxx - * by Matt Porter <mporter@kernel.crashing.org> - * - * This file is licenced under the GPL. - */ - -#include <linux/platform_device.h> -#include <linux/signal.h> - -#include <asm/mach-au1x00/au1000.h> - -#ifndef CONFIG_SOC_AU1200 - -#define USBH_ENABLE_BE (1<<0) -#define USBH_ENABLE_C (1<<1) -#define USBH_ENABLE_E (1<<2) -#define USBH_ENABLE_CE (1<<3) -#define USBH_ENABLE_RD (1<<4) - -#ifdef __LITTLE_ENDIAN -#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C) -#elif __BIG_ENDIAN -#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | USBH_ENABLE_BE) -#else -#error not byte order defined -#endif - -#else /* Au1200 */ - -#define USB_HOST_CONFIG (USB_MSR_BASE + USB_MSR_MCFG) -#define USB_MCFG_PFEN (1<<31) -#define USB_MCFG_RDCOMB (1<<30) -#define USB_MCFG_SSDEN (1<<23) -#define USB_MCFG_OHCCLKEN (1<<16) -#define USB_MCFG_UCAM (1<<7) -#define USB_MCFG_OBMEN (1<<1) -#define USB_MCFG_OMEMEN (1<<0) - -#define USBH_ENABLE_CE USB_MCFG_OHCCLKEN -#ifdef CONFIG_DMA_COHERENT -#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \ - | USB_MCFG_PFEN | USB_MCFG_RDCOMB \ - | USB_MCFG_SSDEN | USB_MCFG_UCAM \ - | USB_MCFG_OBMEN | USB_MCFG_OMEMEN) -#else -#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \ - | USB_MCFG_PFEN | USB_MCFG_RDCOMB \ - | USB_MCFG_SSDEN \ - | USB_MCFG_OBMEN | USB_MCFG_OMEMEN) -#endif -#define USBH_DISABLE (USB_MCFG_OBMEN | USB_MCFG_OMEMEN) - -#endif /* Au1200 */ - -extern int usb_disabled(void); - -/*-------------------------------------------------------------------------*/ - -static void au1xxx_start_ohc(struct platform_device *dev) -{ - printk(KERN_DEBUG __FILE__ - ": starting Au1xxx OHCI USB Controller\n"); - - /* enable host controller */ - -#ifndef CONFIG_SOC_AU1200 - - au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG); - udelay(1000); - au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG); - udelay(1000); - -#else /* Au1200 */ - - /* write HW defaults again in case Yamon cleared them */ - if (au_readl(USB_HOST_CONFIG) == 0) { - au_writel(0x00d02000, USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - } - au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - -#endif /* Au1200 */ - -#ifndef CONFIG_SOC_AU1200 - /* wait for reset complete (read register twice; see au1500 errata) */ - while (au_readl(USB_HOST_CONFIG), - !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD)) -#endif - udelay(1000); - - printk(KERN_DEBUG __FILE__ - ": Clock to USB host has been enabled \n"); -} - -static void au1xxx_stop_ohc(struct platform_device *dev) -{ - printk(KERN_DEBUG __FILE__ - ": stopping Au1xxx OHCI USB Controller\n"); - -#ifndef CONFIG_SOC_AU1200 - - /* Disable clock */ - au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG); - -#else /* Au1200 */ - - /* Disable mem */ - au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - udelay(1000); - /* Disable clock */ - au_writel(~USBH_ENABLE_CE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); -#endif /* Au1200 */ -} - - -/*-------------------------------------------------------------------------*/ - -/* configure so an HC device and id are always provided */ -/* always called with process context; sleeping is OK */ - - -/** - * usb_ohci_au1xxx_probe - initialize Au1xxx-based HCDs - * Context: !in_interrupt() - * - * Allocates basic resources for this USB host controller, and - * then invokes the start() method for the HCD associated with it - * through the hotplug entry's driver_data. - * - */ -static int usb_ohci_au1xxx_probe(const struct hc_driver *driver, - struct platform_device *dev) -{ - int retval; - struct usb_hcd *hcd; - -#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT) - /* Au1200 AB USB does not support coherent memory */ - if (!(read_c0_prid() & 0xff)) { - pr_info("%s: this is chip revision AB !!\n", - dev->name); - pr_info("%s: update your board or re-configure the kernel\n", - dev->name); - return -ENODEV; - } -#endif - - if (dev->resource[1].flags != IORESOURCE_IRQ) { - pr_debug("resource[1] is not IORESOURCE_IRQ\n"); - return -ENOMEM; - } - - hcd = usb_create_hcd(driver, &dev->dev, "au1xxx"); - if (!hcd) - return -ENOMEM; - hcd->rsrc_start = dev->resource[0].start; - hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1; - - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - pr_debug("request_mem_region failed\n"); - retval = -EBUSY; - goto err1; - } - - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - pr_debug("ioremap failed\n"); - retval = -ENOMEM; - goto err2; - } - - au1xxx_start_ohc(dev); - ohci_hcd_init(hcd_to_ohci(hcd)); - - retval = usb_add_hcd(hcd, dev->resource[1].start, IRQF_DISABLED | IRQF_SHARED); - if (retval == 0) - return retval; - - au1xxx_stop_ohc(dev); - iounmap(hcd->regs); - err2: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - err1: - usb_put_hcd(hcd); - return retval; -} - - -/* may be called without controller electrically present */ -/* may be called with controller, bus, and devices active */ - -/** - * usb_hcd_au1xxx_remove - shutdown processing for Au1xxx-based HCDs - * @dev: USB Host Controller being removed - * Context: !in_interrupt() - * - * Reverses the effect of usb_hcd_au1xxx_probe(), first invoking - * the HCD's stop() method. It is always called from a thread - * context, normally "rmmod", "apmd", or something similar. - * - */ -static void usb_ohci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev) -{ - usb_remove_hcd(hcd); - au1xxx_stop_ohc(dev); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); -} - -/*-------------------------------------------------------------------------*/ - -static int __devinit -ohci_au1xxx_start (struct usb_hcd *hcd) -{ - struct ohci_hcd *ohci = hcd_to_ohci (hcd); - int ret; - - ohci_dbg (ohci, "ohci_au1xxx_start, ohci:%p", ohci); - - if ((ret = ohci_init (ohci)) < 0) - return ret; - - if ((ret = ohci_run (ohci)) < 0) { - err ("can't start %s", hcd->self.bus_name); - ohci_stop (hcd); - return ret; - } - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -static const struct hc_driver ohci_au1xxx_hc_driver = { - .description = hcd_name, - .product_desc = "Au1xxx OHCI", - .hcd_priv_size = sizeof(struct ohci_hcd), - - /* - * generic hardware linkage - */ - .irq = ohci_irq, - .flags = HCD_USB11 | HCD_MEMORY, - - /* - * basic lifecycle operations - */ - .start = ohci_au1xxx_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, - .hub_irq_enable = ohci_rhsc_enable, -#ifdef CONFIG_PM - .bus_suspend = ohci_bus_suspend, - .bus_resume = ohci_bus_resume, -#endif - .start_port_reset = ohci_start_port_reset, -}; - -/*-------------------------------------------------------------------------*/ - -static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev) -{ - int ret; - - pr_debug ("In ohci_hcd_au1xxx_drv_probe"); - - if (usb_disabled()) - return -ENODEV; - - ret = usb_ohci_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev); - return ret; -} - -static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev) -{ - struct usb_hcd *hcd = platform_get_drvdata(pdev); - - usb_ohci_au1xxx_remove(hcd, pdev); - return 0; -} - /*TBD*/ -/*static int ohci_hcd_au1xxx_drv_suspend(struct platform_device *dev) -{ - struct usb_hcd *hcd = platform_get_drvdata(dev); - - return 0; -} -static int ohci_hcd_au1xxx_drv_resume(struct platform_device *dev) -{ - struct usb_hcd *hcd = platform_get_drvdata(dev); - - return 0; -} -*/ - -static struct platform_driver ohci_hcd_au1xxx_driver = { - .probe = ohci_hcd_au1xxx_drv_probe, - .remove = ohci_hcd_au1xxx_drv_remove, - .shutdown = usb_hcd_platform_shutdown, - /*.suspend = ohci_hcd_au1xxx_drv_suspend, */ - /*.resume = ohci_hcd_au1xxx_drv_resume, */ - .driver = { - .name = "au1xxx-ohci", - .owner = THIS_MODULE, - }, -}; - -static int __init ohci_hcd_au1xxx_init (void) -{ - pr_debug (DRIVER_INFO " (Au1xxx)"); - pr_debug ("block sizes: ed %d td %d\n", - sizeof (struct ed), sizeof (struct td)); - - return platform_driver_register(&ohci_hcd_au1xxx_driver); -} - -static void __exit ohci_hcd_au1xxx_cleanup (void) -{ - platform_driver_unregister(&ohci_hcd_au1xxx_driver); -} - -module_init (ohci_hcd_au1xxx_init); -module_exit (ohci_hcd_au1xxx_cleanup); |