/*
   *  PS3 virtual uart
   *
   *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   *  Copyright 2006 Sony Corp.
   *
   *  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; version 2 of the License.
   *
   *  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
   */
  
  #if !defined(_PS3_VUART_H)
  #define _PS3_VUART_H

  #include <asm/ps3.h>
  
  struct ps3_vuart_stats {
  	unsigned long bytes_written;
  	unsigned long bytes_read;
  	unsigned long tx_interrupts;
  	unsigned long rx_interrupts;
  	unsigned long disconnect_interrupts;
  };

  struct ps3_vuart_work {
  	struct work_struct work;
  	unsigned long trigger;

  	struct ps3_system_bus_device *dev; /* to convert work to device */

  };

  /**
   * struct ps3_vuart_port_driver - a driver for a device on a vuart port
   */
  
  struct ps3_vuart_port_driver {

  	struct ps3_system_bus_driver core;
  	int (*probe)(struct ps3_system_bus_device *);
  	int (*remove)(struct ps3_system_bus_device *);
  	void (*shutdown)(struct ps3_system_bus_device *);
  	void (*work)(struct ps3_system_bus_device *);
  	/* int (*tx_event)(struct ps3_system_bus_device *dev); */
  	/* int (*rx_event)(struct ps3_system_bus_device *dev); */
  	/* int (*disconnect_event)(struct ps3_system_bus_device *dev); */
  	/* int (*suspend)(struct ps3_system_bus_device *, pm_message_t); */
  	/* int (*resume)(struct ps3_system_bus_device *); */

  };

  int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
  void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);

  static inline struct ps3_vuart_port_driver *
  	ps3_system_bus_dev_to_vuart_drv(struct ps3_system_bus_device *_dev)

  {

  	struct ps3_system_bus_driver *sbd =
  		ps3_system_bus_dev_to_system_bus_drv(_dev);
  	BUG_ON(!sbd);
  	return container_of(sbd, struct ps3_vuart_port_driver, core);

  }

  static inline struct ps3_system_bus_device *ps3_vuart_work_to_system_bus_dev(

  	struct work_struct *_work)
  {
  	struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work,
  		work);
  	return vw->dev;
  }

  int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,

  	unsigned int bytes);

  int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,

  	unsigned int bytes);

  int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
  void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
  void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,

  	unsigned int bytes);

  #endif