LXR linux/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 */
 113