/sound/pci/lx6464es/lx6464es.h

  1/* -*- linux-c -*- *
  2 *
  3 * ALSA driver for the digigram lx6464es interface
  4 *
  5 * Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
  6 *
  7 *
  8 * This program is free software; you can redistribute it and/or modify
  9 * it under the terms of the GNU General Public License as published by
 10 * the Free Software Foundation; either version 2 of the License, or
 11 * (at your option) any later version.
 12 *
 13 * This program is distributed in the hope that it will be useful,
 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16 * GNU General Public License for more details.
 17 *
 18 * You should have received a copy of the GNU General Public License
 19 * along with this program; see the file COPYING.  If not, write to
 20 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 21 * Boston, MA 02111-1307, USA.
 22 *
 23 */
 24
 25#ifndef LX6464ES_H
 26#define LX6464ES_H
 27
 28#include <linux/spinlock.h>
 29#include <asm/atomic.h>
 30
 31#include <sound/core.h>
 32#include <sound/pcm.h>
 33
 34#include "lx_core.h"
 35
 36#define LXP "LX6464ES: "
 37
 38enum {
 39    ES_cmd_free         = 0,    /* no command executing */
 40    ES_cmd_processing   = 1,	/* execution of a read/write command */
 41    ES_read_pending     = 2,    /* a asynchron read command is pending */
 42    ES_read_finishing   = 3,    /* a read command has finished waiting (set by
 43				 * Interrupt or CancelIrp) */
 44};
 45
 46enum lx_stream_status {
 47	LX_STREAM_STATUS_FREE,
 48/* 	LX_STREAM_STATUS_OPEN, */
 49	LX_STREAM_STATUS_SCHEDULE_RUN,
 50/* 	LX_STREAM_STATUS_STARTED, */
 51	LX_STREAM_STATUS_RUNNING,
 52	LX_STREAM_STATUS_SCHEDULE_STOP,
 53/* 	LX_STREAM_STATUS_STOPPED, */
 54/* 	LX_STREAM_STATUS_PAUSED */
 55};
 56
 57
 58struct lx_stream {
 59	struct snd_pcm_substream  *stream;
 60	snd_pcm_uframes_t          frame_pos;
 61	enum lx_stream_status      status; /* free, open, running, draining
 62					    * pause */
 63	int                        is_capture:1;
 64};
 65
 66
 67struct lx6464es {
 68	struct snd_card        *card;
 69	struct pci_dev         *pci;
 70	int			irq;
 71
 72	spinlock_t		lock;        /* interrupt spinlock */
 73	struct mutex            setup_mutex; /* mutex used in hw_params, open
 74					      * and close */
 75
 76	struct tasklet_struct   trigger_tasklet; /* trigger tasklet */
 77	struct tasklet_struct   tasklet_capture;
 78	struct tasklet_struct   tasklet_playback;
 79
 80	/* ports */
 81	unsigned long		port_plx;	   /* io port (size=256) */
 82	void __iomem           *port_plx_remapped; /* remapped plx port */
 83	void __iomem           *port_dsp_bar;      /* memory port (32-bit,
 84						    * non-prefetchable,
 85						    * size=8K) */
 86
 87	/* messaging */
 88	spinlock_t		msg_lock;          /* message spinlock */
 89	struct lx_rmh           rmh;
 90
 91	/* configuration */
 92	uint			freq_ratio : 2;
 93	uint                    playback_mute : 1;
 94	uint                    hardware_running[2];
 95	u32                     board_sample_rate; /* sample rate read from
 96						    * board */
 97	u16                     pcm_granularity;   /* board blocksize */
 98
 99	/* dma */
100	struct snd_dma_buffer   capture_dma_buf;
101	struct snd_dma_buffer   playback_dma_buf;
102
103	/* pcm */
104	struct snd_pcm         *pcm;
105
106	/* streams */
107	struct lx_stream        capture_stream;
108	struct lx_stream        playback_stream;
109};
110
111
112#endif /* LX6464ES_H */