Logo Search packages:      
Sourcecode: alsa-driver version File versions

pcxhr.h

/*
 * Driver for Digigram pcxhr soundcards
 *
 * main header file
 *
 * Copyright (c) 2004 by Digigram <alsa@digigram.com>
 *
 *   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; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#ifndef __SOUND_PCXHR_H
#define __SOUND_PCXHR_H

#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <sound/pcm.h>

#define PCXHR_DRIVER_VERSION        0x000804    /* 0.8.4 */
#define PCXHR_DRIVER_VERSION_STRING "0.8.4"           /* 0.8.4 */


#define PCXHR_MAX_CARDS             6
#define PCXHR_PLAYBACK_STREAMS            4

#define PCXHR_GRANULARITY           96    /* transfer granularity (should be min 96 and multiple of 48) */
#define PCXHR_GRANULARITY_MIN       96    /* transfer granularity of pipes and the dsp time (MBOX4) */

struct snd_pcxhr;
struct pcxhr_mgr;

struct pcxhr_stream;
struct pcxhr_pipe;

enum pcxhr_clock_type {
      PCXHR_CLOCK_TYPE_INTERNAL = 0,
      PCXHR_CLOCK_TYPE_WORD_CLOCK,
      PCXHR_CLOCK_TYPE_AES_SYNC,
      PCXHR_CLOCK_TYPE_AES_1,
      PCXHR_CLOCK_TYPE_AES_2,
      PCXHR_CLOCK_TYPE_AES_3,
      PCXHR_CLOCK_TYPE_AES_4,
};

struct pcxhr_mgr {
      unsigned int num_cards;
      struct snd_pcxhr *chip[PCXHR_MAX_CARDS];

      struct pci_dev *pci;

      int irq;

      /* card access with 1 mem bar and 2 io bar's */
      unsigned long port[3];

      /* share the name */
      char shortname[32];           /* short name of this soundcard */
      char longname[96];            /* name of this soundcard */

      /* message tasklet */
      struct tasklet_struct msg_taskq;
      struct pcxhr_rmh *prmh;
      /* trigger tasklet */
      struct tasklet_struct trigger_taskq;

      spinlock_t lock;        /* interrupt spinlock */
      spinlock_t msg_lock;          /* message spinlock */

      struct mutex setup_mutex;     /* mutex used in hw_params, open and close */
      struct mutex mixer_mutex;     /* mutex for mixer */

      /* hardware interface */
      unsigned int dsp_loaded;      /* bit flags of loaded dsp indices */
      unsigned int dsp_version;     /* read from embedded once firmware is loaded */
      int board_has_analog;         /* if 0 the board is digital only */
      int mono_capture;       /* if 1 the board does mono capture */
      int playback_chips;           /* 4 or 6 */
      int capture_chips;            /* 4 or 1 */
      int firmware_num;       /* 41 or 42 */

      struct snd_dma_buffer hostport;

      enum pcxhr_clock_type use_clock_type;     /* clock type selected by mixer */
      enum pcxhr_clock_type cur_clock_type;     /* current clock type synced */
      int sample_rate;
      int ref_count_rate;
      int timer_toggle;       /* timer interrupt toggles between the two values 0x200 and 0x300 */
      int dsp_time_last;            /* the last dsp time (read by interrupt) */
      int dsp_time_err;       /* dsp time errors */
      unsigned int src_it_dsp;      /* dsp interrupt source */
      unsigned int io_num_reg_cont; /* backup of IO_NUM_REG_CONT */
      unsigned int codec_speed;     /* speed mode of the codecs */
      unsigned int sample_rate_real;      /* current real sample rate */
      int last_reg_stat;
      int async_err_stream_xrun;
      int async_err_pipe_xrun;
      int async_err_other_last;
};


enum pcxhr_stream_status {
      PCXHR_STREAM_STATUS_FREE,
      PCXHR_STREAM_STATUS_OPEN,
      PCXHR_STREAM_STATUS_SCHEDULE_RUN,
      PCXHR_STREAM_STATUS_STARTED,
      PCXHR_STREAM_STATUS_RUNNING,
      PCXHR_STREAM_STATUS_SCHEDULE_STOP,
      PCXHR_STREAM_STATUS_STOPPED,
      PCXHR_STREAM_STATUS_PAUSED
};

struct pcxhr_stream {
      struct snd_pcm_substream *substream;
      snd_pcm_format_t format;
      struct pcxhr_pipe *pipe;

      enum pcxhr_stream_status status;    /* free, open, running, draining, pause */

      u_int64_t timer_abs_periods;  /* timer: samples elapsed since TRIGGER_START (multiple of period_size) */
      u_int32_t timer_period_frag;  /* timer: samples elapsed since last call to snd_pcm_period_elapsed (0..period_size) */
      u_int32_t timer_buf_periods;  /* nb of periods in the buffer that have already elapsed */
      int timer_is_synced;          /* if(0) : timer needs to be resynced with real hardware pointer */

      int channels;
};


enum pcxhr_pipe_status {
      PCXHR_PIPE_UNDEFINED,
      PCXHR_PIPE_DEFINED
};

struct pcxhr_pipe {
      enum pcxhr_pipe_status status;
      int is_capture;         /* this is a capture pipe */
      int first_audio;  /* first audio num */
};


struct snd_pcxhr {
      struct snd_card *card;
      struct pcxhr_mgr *mgr;
      int chip_idx;           /* zero based */

      struct snd_pcm *pcm;          /* PCM */

      struct pcxhr_pipe playback_pipe;          /* 1 stereo pipe only */
      struct pcxhr_pipe capture_pipe[2];        /* 1 stereo pipe or 2 mono pipes */

      struct pcxhr_stream playback_stream[PCXHR_PLAYBACK_STREAMS];
      struct pcxhr_stream capture_stream[2];    /* 1 stereo stream or 2 mono streams */
      int nb_streams_play;
      int nb_streams_capt;

      int analog_playback_active[2];            /* Mixer : Master Playback active (!mute) */
      int analog_playback_volume[2];            /* Mixer : Master Playback Volume */
      int analog_capture_volume[2];       /* Mixer : Master Capture Volume */
      int digital_playback_active[PCXHR_PLAYBACK_STREAMS][2];     /* Mixer : Digital Playback Active [streams][stereo]*/
      int digital_playback_volume[PCXHR_PLAYBACK_STREAMS][2];     /* Mixer : Digital Playback Volume [streams][stereo]*/
      int digital_capture_volume[2];            /* Mixer : Digital Capture Volume [stereo] */
      int monitoring_active[2];           /* Mixer : Monitoring Active */
      int monitoring_volume[2];           /* Mixer : Monitoring Volume */
      int audio_capture_source;           /* Mixer : Audio Capture Source */
      unsigned char aes_bits[5];          /* Mixer : IEC958_AES bits */
};

struct pcxhr_hostport
{
      char purgebuffer[6];
      char reserved[2];
};

/* exported */
int pcxhr_create_pcm(struct snd_pcxhr *chip);
int pcxhr_set_clock(struct pcxhr_mgr *mgr, unsigned int rate);
int pcxhr_get_external_clock(struct pcxhr_mgr *mgr, enum pcxhr_clock_type clock_type, int *sample_rate);

#endif /* __SOUND_PCXHR_H */

Generated by  Doxygen 1.6.0   Back to index