s3c2410_udc.h

S3C2410 USBD驱动程序 s3c2410_udc

/*
 * linux/drivers/usb/gadget/s3c2410_udc.h
 * Samsung on-chip full speed USB device controllers
 *
 * Copyright (C) 2004-2007 Herbert P?tzl - Arnaud Patard
 *   Additional cleanups by Ben Dooks <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef _S3C2410_UDC_H
#define _S3C2410_UDC_H

struct s3c2410_ep {
   struct list_head      queue;
   unsigned long         last_io;   /* jiffies timestamp */
   struct usb_gadget      *gadget;
   struct s3c2410_udc      *dev;
   const struct usb_endpoint_descriptor *desc;
   struct usb_ep         ep;
   u8            num;

   unsigned short         fifo_size;
   u8            bEndpointAddress;
   u8            bmAttributes;

   unsigned         halted : 1;
   unsigned         already_seen : 1;
   unsigned         setup_stage : 1;
};


/* Warning : ep0 has a fifo of 16 bytes */
/* Don't try to set 32 or 64            */
/* also testusb 14 fails  wit 16 but is */
/* fine with 8                          */
#define EP0_FIFO_SIZE       8
#define EP_FIFO_SIZE      64
#define DEFAULT_POWER_STATE   0x00

#define S3C2440_EP_FIFO_SIZE   128

static const char ep0name [] = "ep0";

static const char *const ep_name[] = {
   ep0name,                                /* everyone has ep0 */
   /* s3c2410 four bidirectional bulk endpoints */
   "ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk",
};

#define S3C2410_ENDPOINTS       ARRAY_SIZE(ep_name)

struct s3c2410_request {
   struct list_head      queue;      /* ep's requests */
   struct usb_request      req;
};

enum ep0_state {
        EP0_IDLE,
        EP0_IN_DATA_PHASE,
        EP0_OUT_DATA_PHASE,
        EP0_END_XFER,
        EP0_STALL,
};

static const char *ep0states[]= {
        "EP0_IDLE",
        "EP0_IN_DATA_PHASE",
        "EP0_OUT_DATA_PHASE",
        "EP0_END_XFER",
        "EP0_STALL",
};

struct s3c2410_udc {
   spinlock_t         lock;

   struct s3c2410_ep      ep[S3C2410_ENDPOINTS];
   int            address;
   struct usb_gadget      gadget;
   struct usb_gadget_driver   *driver;
   struct s3c2410_request      fifo_req;
   u8            fifo_buf[EP_FIFO_SIZE];
   u16            devstatus;

   u32            port_status;
   int            ep0state;

   unsigned         got_irq : 1;

   unsigned         req_std : 1;
   unsigned         req_config : 1;
   unsigned         req_pending : 1;
   u8            vbus;
   struct dentry         *regs_info;
};

#endif