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Linux/sound/pci/lx6464es/lx6464es.h

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  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         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 

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