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
  38 enum {
  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
  46 enum 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
  58 struct 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
  67 struct 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         atomic_t                send_message_locked;
  90         struct lx_rmh           rmh;
  91
  92         /* configuration */
  93         uint                    freq_ratio : 2;
  94         uint                    playback_mute : 1;
  95         uint                    hardware_running[2];
  96         u32                     board_sample_rate; /* sample rate read from
  97                                                     * board */
  98         u32                     sample_rate;       /* our sample rate */
  99         u16                     pcm_granularity;   /* board blocksize */
 100
 101         /* dma */
 102         struct snd_dma_buffer   capture_dma_buf;
 103         struct snd_dma_buffer   playback_dma_buf;
 104
 105         /* pcm */
 106         struct snd_pcm         *pcm;
 107
 108         /* streams */
 109         struct lx_stream        capture_stream;
 110         struct lx_stream        playback_stream;
 111 };
 112
 113
 114 #endif /* LX6464ES_H */