Release 4.7 drivers/usb/isp1760/isp1760-udc.h

/*
 * Driver for the NXP ISP1761 device controller
 *
 * Copyright 2014 Ideas on Board Oy
 *
 * Contacts:
 *      Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 *
 * 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.
 */

#ifndef _ISP1760_UDC_H_

#define _ISP1760_UDC_H_

#include <linux/ioport.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/usb/gadget.h>

struct isp1760_device;
struct isp1760_udc;


enum isp1760_ctrl_state {
	
ISP1760_CTRL_SETUP,		/* Waiting for a SETUP transaction */
	
ISP1760_CTRL_DATA_IN,		/* Setup received, data IN stage */
	
ISP1760_CTRL_DATA_OUT,		/* Setup received, data OUT stage */
	
ISP1760_CTRL_STATUS,		/* 0-length request in status stage */
};


struct isp1760_ep {
	
struct isp1760_udc *udc;
	
struct usb_ep ep;

	
struct list_head queue;

	
unsigned int addr;
	
unsigned int maxpacket;
	
char name[7];

	
const struct usb_endpoint_descriptor *desc;

	
bool rx_pending;
	
bool halted;
	
bool wedged;
};

/**
 * struct isp1760_udc - UDC state information
 * irq: IRQ number
 * irqname: IRQ name (as passed to request_irq)
 * regs: Base address of the UDC registers
 * driver: Gadget driver
 * gadget: Gadget device
 * lock: Protects driver, vbus_timer, ep, ep0_*, DC_EPINDEX register
 * ep: Array of endpoints
 * ep0_state: Control request state for endpoint 0
 * ep0_dir: Direction of the current control request
 * ep0_length: Length of the current control request
 * connected: Tracks gadget driver bus connection state
 */

struct isp1760_udc {
#ifdef CONFIG_USB_ISP1761_UDC
	
struct isp1760_device *isp;

	
int irq;
	
char *irqname;
	
void __iomem *regs;

	
struct usb_gadget_driver *driver;
	
struct usb_gadget gadget;

	
spinlock_t lock;
	
struct timer_list vbus_timer;

	
struct isp1760_ep ep[15];

	
enum isp1760_ctrl_state ep0_state;
	
u8 ep0_dir;
	
u16 ep0_length;

	
bool connected;

	
unsigned int devstatus;
#endif
};

#ifdef CONFIG_USB_ISP1761_UDC
int isp1760_udc_register(struct isp1760_device *isp, int irq,
			 unsigned long irqflags);
void isp1760_udc_unregister(struct isp1760_device *isp);
#else


static inline int isp1760_udc_register(struct isp1760_device *isp, int irq,
				       unsigned long irqflags)
{
	return 0;
}

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static inline void isp1760_udc_unregister(struct isp1760_device *isp)
{
}
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#endif

#endif
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Directory: drivers/usb/isp1760

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