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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        0x000906    /* 0.9.6 */
#define PCXHR_DRIVER_VERSION_STRING "0.9.6"           /* 0.9.6 */


#define PCXHR_MAX_CARDS       6
#define PCXHR_PLAYBACK_STREAMS      4

#define PCXHR_GRANULARITY     96    /* min 96 and multiple of 48 */
/* transfer granularity of pipes and the dsp time (MBOX4) */
#define PCXHR_GRANULARITY_MIN 96
/* TODO : granularity could be 64 or 128 */
#define PCXHR_GRANULARITY_HR22      192   /* granularity for stereo cards */

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,
      PCXHR_CLOCK_TYPE_MAX = PCXHR_CLOCK_TYPE_AES_4,
      HR22_CLOCK_TYPE_INTERNAL = PCXHR_CLOCK_TYPE_INTERNAL,
      HR22_CLOCK_TYPE_AES_SYNC,
      HR22_CLOCK_TYPE_AES_1,
      HR22_CLOCK_TYPE_MAX = HR22_CLOCK_TYPE_AES_1,
};

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

      struct pci_dev *pci;

      int irq;

      int granularity;

      /* 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 playback_chips;
      int capture_chips;
      int fw_file_set;
      int firmware_num;
      unsigned int is_hr_stereo:1;
      unsigned int board_has_aes1:1;      /* if 1 board has AES1 plug and SRC */
      unsigned int board_has_analog:1; /* if 0 the board is digital only */
      unsigned int board_has_mic:1; /* if 1 the board has microphone input */
      unsigned int board_aes_in_192k:1;/* if 1 the aes input plugs do support 192kHz */
      unsigned int mono_capture:1; /* if 1 the board does mono capture */

      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;

      unsigned char xlx_cfg;        /* copy of PCXHR_XLX_CFG register */
      unsigned char xlx_selmic;     /* copy of PCXHR_XLX_SELMIC register */
      unsigned char dsp_reset;      /* copy of PCXHR_DSP_RESET register */
};


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 or 2 mono pipes */

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

      int analog_playback_active[2];      /* Mixer : Master Playback !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];
      int digital_playback_volume[PCXHR_PLAYBACK_STREAMS][2];
      int digital_capture_volume[2];      /* Mixer : Digital Capture Volume */
      int monitoring_active[2];     /* Mixer : Monitoring Active */
      int monitoring_volume[2];     /* Mixer : Monitoring Volume */
      int audio_capture_source;     /* Mixer : Audio Capture Source */
      int mic_volume;               /* used by cards with MIC only */
      int mic_boost;                /* used by cards with MIC only */
      int mic_active;               /* used by cards with MIC only */
      int analog_capture_active;    /* used by cards with MIC only */
      int phantom_power;            /* used by cards with MIC only */

      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 */

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