/* -*- linux-c -*- *
   *
   * ALSA driver for the digigram lx6464es interface
   *
   * Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
   *
   *
   * 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; see the file COPYING.  If not, write to
   * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   * Boston, MA 02111-1307, USA.
   *
   */
  
  #ifndef LX6464ES_H
  #define LX6464ES_H
  
  #include <linux/spinlock.h>
  #include <linux/atomic.h>
  
  #include <sound/core.h>
  #include <sound/pcm.h>
  
  #include "lx_core.h"
  
  #define LXP "LX6464ES: "
  
  enum {
      ES_cmd_free         = 0,    /* no command executing */
      ES_cmd_processing   = 1,	/* execution of a read/write command */
      ES_read_pending     = 2,    /* a asynchron read command is pending */
      ES_read_finishing   = 3,    /* a read command has finished waiting (set by
  				 * Interrupt or CancelIrp) */
  };
  
  enum lx_stream_status {
  	LX_STREAM_STATUS_FREE,
  /* 	LX_STREAM_STATUS_OPEN, */
  	LX_STREAM_STATUS_SCHEDULE_RUN,
  /* 	LX_STREAM_STATUS_STARTED, */
  	LX_STREAM_STATUS_RUNNING,
  	LX_STREAM_STATUS_SCHEDULE_STOP,
  /* 	LX_STREAM_STATUS_STOPPED, */
  /* 	LX_STREAM_STATUS_PAUSED */
  };
  
  
  struct lx_stream {
  	struct snd_pcm_substream  *stream;
  	snd_pcm_uframes_t          frame_pos;
  	enum lx_stream_status      status; /* free, open, running, draining
  					    * pause */
  	unsigned int               is_capture:1;
  };
  
  
  struct lx6464es {
  	struct snd_card        *card;
  	struct pci_dev         *pci;
  	int			irq;
  
  	u8			mac_address[6];
  
  	spinlock_t		lock;        /* interrupt spinlock */
  	struct mutex            setup_mutex; /* mutex used in hw_params, open
  					      * and close */
  
  	struct tasklet_struct   trigger_tasklet; /* trigger tasklet */
  	struct tasklet_struct   tasklet_capture;
  	struct tasklet_struct   tasklet_playback;
  
  	/* ports */
  	unsigned long		port_plx;	   /* io port (size=256) */
  	void __iomem           *port_plx_remapped; /* remapped plx port */
  	void __iomem           *port_dsp_bar;      /* memory port (32-bit,
  						    * non-prefetchable,
  						    * size=8K) */
  
  	/* messaging */
  	spinlock_t		msg_lock;          /* message spinlock */
  	struct lx_rmh           rmh;
  
  	/* configuration */
  	uint			freq_ratio : 2;
  	uint                    playback_mute : 1;
  	uint                    hardware_running[2];
  	u32                     board_sample_rate; /* sample rate read from
  						    * board */
  	u16                     pcm_granularity;   /* board blocksize */
  
  	/* dma */
  	struct snd_dma_buffer   capture_dma_buf;
  	struct snd_dma_buffer   playback_dma_buf;
  
  	/* pcm */
  	struct snd_pcm         *pcm;
  
  	/* streams */
  	struct lx_stream        capture_stream;
  	struct lx_stream        playback_stream;
  };
  
  
  #endif /* LX6464ES_H */