/* *  linux/drivers/usb/usb-ohci-ep93xx.c * *  The outline of this code was taken from Brad Parkers <brad@heeltoe.com> *  original OHCI driver modifications, and reworked into a cleaner form *  by Russell King <rmk@arm.linux.org.uk>. */#include <linux/module.h>#include <linux/init.h>#include <linux/sched.h>#include <linux/ioport.h>#include <linux/interrupt.h>#include <linux/slab.h>#include <linux/usb.h>#include <asm/hardware.h>#include <asm/irq.h>#include <asm/io.h>#include <asm/pci.h>#if defined(CONFIG_ARCH_EP93XX)extern struct pci_pool *pci_pool_create(const char *name, struct pci_dev *dev,					size_t size, size_t align,					size_t allocation, int flags);extern void pci_pool_destroy(struct pci_pool *pool);extern void *pci_pool_alloc(struct pci_pool *pool, int flags,			    dma_addr_t *handle);extern void pci_pool_free(struct pci_pool *pool, void *vaddr, dma_addr_t addr);#endif#include "usb-ohci.h"int __devinithc_add_ohci(struct pci_dev *dev, int irq, void *membase, unsigned long flags,        const char *name, const char *slot_name);extern void hc_remove_ohci(ohci_t *ohci);static ohci_t *ep93xx_ohci;static void __init ep93xx_ohci_configure(void){#if defined(CONFIG_ARCH_EDB9312) || defined(CONFIG_ARCH_EDB9315)	unsigned int uiPBDR, uiPBDDR;#endif     	/*	 * Configure the power sense and control lines.  Place the USB	 * host controller in reset.	 */#if defined(CONFIG_ARCH_EDB9312) || defined(CONFIG_ARCH_EDB9315)	/*	 * For EDB9315 boards, turn on USB by clearing EGPIO9.	 */	uiPBDR = inl(GPIO_PBDR) & 0xfd;	outl( uiPBDR, GPIO_PBDR );	uiPBDDR = inl(GPIO_PBDDR) | 0x02;	outl( uiPBDDR, GPIO_PBDDR );#endif	/*	 * Now, carefully enable the USB clock, and take	 * the USB host controller out of reset.	 */	writel (readl ((void *)SYSCON_PWRCNT) | (1<< 28),(void *)SYSCON_PWRCNT);}static int __init ep93xx_ohci_init(void){	int ret;	/*	 * Only support USB on rev D1 and later chips.         */	if((inl(SYSCON_CHIPID) >> 28) <= 3)		return -EBUSY;	ep93xx_ohci_configure();	/*	 * Initialise the generic OHCI driver.	 */	ret = hc_add_ohci((struct pci_dev *)1, IRQ_USH,			  (void *)USB_BASE, 0,  "usb-ohci", "ep93xx");	return ret;}static void __exit ep93xx_ohci_exit(void){	hc_remove_ohci(ep93xx_ohci);	/*	 * Put the USB host controller into reset.	 */	/*	 * Stop the USB clock.	 */}module_init(ep93xx_ohci_init);module_exit(ep93xx_ohci_exit);