arch/ppc/8xx_io/cs4218.h

   1 #ifndef _cs4218_h_
   2 /*
   3  *  Hacked version of linux/drivers/sound/dmasound/dmasound.h
   4  *
   5  *
   6  *  Minor numbers for the sound driver.
   7  *
   8  *  Unfortunately Creative called the codec chip of SB as a DSP. For this
   9  *  reason the /dev/dsp is reserved for digitized audio use. There is a
  10  *  device for true DSP processors but it will be called something else.
  11  *  In v3.0 it's /dev/sndproc but this could be a temporary solution.
  12  */
  13 #define _cs4218_h_
  14
  15 #include <linux/types.h>
  16 #include <linux/config.h>
  17
  18 #define SND_NDEVS       256     /* Number of supported devices */
  19 #define SND_DEV_CTL     0       /* Control port /dev/mixer */
  20 #define SND_DEV_SEQ     1       /* Sequencer output /dev/sequencer (FM
  21                                    synthesizer and MIDI output) */
  22 #define SND_DEV_MIDIN   2       /* Raw midi access */
  23 #define SND_DEV_DSP     3       /* Digitized voice /dev/dsp */
  24 #define SND_DEV_AUDIO   4       /* Sparc compatible /dev/audio */
  25 #define SND_DEV_DSP16   5       /* Like /dev/dsp but 16 bits/sample */
  26 #define SND_DEV_STATUS  6       /* /dev/sndstat */
  27 /* #7 not in use now. Was in 2.4. Free for use after v3.0. */
  28 #define SND_DEV_SEQ2    8       /* /dev/sequencer, level 2 interface */
  29 #define SND_DEV_SNDPROC 9       /* /dev/sndproc for programmable devices */
  30 #define SND_DEV_PSS     SND_DEV_SNDPROC
  31
  32 /* switch on various prinks */
  33 #define DEBUG_DMASOUND 1
  34
  35 #define MAX_AUDIO_DEV   5
  36 #define MAX_MIXER_DEV   4
  37 #define MAX_SYNTH_DEV   3
  38 #define MAX_MIDI_DEV    6
  39 #define MAX_TIMER_DEV   3
  40
  41 #define MAX_CATCH_RADIUS        10
  42
  43 #define le2be16(x)      (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
  44 #define le2be16dbl(x)   (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
  45
  46 #define IOCTL_IN(arg, ret) \
  47         do { int error = get_user(ret, (int *)(arg)); \
  48                 if (error) return error; \
  49         } while (0)
  50 #define IOCTL_OUT(arg, ret)     ioctl_return((int *)(arg), ret)
  51
  52 static inline int ioctl_return(int *addr, int value)
  53 {
  54         return value < 0 ? value : put_user(value, addr);
  55 }
  56
  57 #define HAS_RECORD
  58
  59     /*
  60      *  Initialization
  61      */
  62
  63 /* description of the set-up applies to either hard or soft settings */
  64
  65 typedef struct {
  66     int format;         /* AFMT_* */
  67     int stereo;         /* 0 = mono, 1 = stereo */
  68     int size;           /* 8/16 bit*/
  69     int speed;          /* speed */
  70 } SETTINGS;
  71
  72     /*
  73      *  Machine definitions
  74      */
  75
  76 typedef struct {
  77     const char *name;
  78     const char *name2;
  79     void (*open)(void);
  80     void (*release)(void);
  81     void *(*dma_alloc)(unsigned int, int);
  82     void (*dma_free)(void *, unsigned int);
  83     int (*irqinit)(void);
  84 #ifdef MODULE
  85     void (*irqcleanup)(void);
  86 #endif
  87     void (*init)(void);
  88     void (*silence)(void);
  89     int (*setFormat)(int);
  90     int (*setVolume)(int);
  91     int (*setBass)(int);
  92     int (*setTreble)(int);
  93     int (*setGain)(int);
  94     void (*play)(void);
  95     void (*record)(void);               /* optional */
  96     void (*mixer_init)(void);           /* optional */
  97     int (*mixer_ioctl)(u_int, u_long);  /* optional */
  98     int (*write_sq_setup)(void);        /* optional */
  99     int (*read_sq_setup)(void);         /* optional */
 100     int (*sq_open)(mode_t);             /* optional */
 101     int (*state_info)(char *, size_t);  /* optional */
 102     void (*abort_read)(void);           /* optional */
 103     int min_dsp_speed;
 104     int max_dsp_speed;
 105     int version ;
 106     int hardware_afmts ;                /* OSS says we only return h'ware info */
 107                                         /* when queried via SNDCTL_DSP_GETFMTS */
 108     int capabilities ;          /* low-level reply to SNDCTL_DSP_GETCAPS */
 109     SETTINGS default_hard ;     /* open() or init() should set something valid */
 110     SETTINGS default_soft ;     /* you can make it look like old OSS, if you want to */
 111 } MACHINE;
 112
 113     /*
 114      *  Low level stuff
 115      */
 116
 117 typedef struct {
 118     ssize_t (*ct_ulaw)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 119     ssize_t (*ct_alaw)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 120     ssize_t (*ct_s8)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 121     ssize_t (*ct_u8)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 122     ssize_t (*ct_s16be)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 123     ssize_t (*ct_u16be)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 124     ssize_t (*ct_s16le)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 125     ssize_t (*ct_u16le)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
 126 } TRANS;
 127
 128
 129     /*
 130      * Sound queue stuff, the heart of the driver
 131      */
 132
 133 struct sound_queue {
 134     /* buffers allocated for this queue */
 135     int numBufs;                /* real limits on what the user can have */
 136     int bufSize;                /* in bytes */
 137     char **buffers;
 138
 139     /* current parameters */
 140     int locked ;                /* params cannot be modified when != 0 */
 141     int user_frags ;            /* user requests this many */
 142     int user_frag_size ;        /* of this size */
 143     int max_count;              /* actual # fragments <= numBufs */
 144     int block_size;             /* internal block size in bytes */
 145     int max_active;             /* in-use fragments <= max_count */
 146
 147     /* it shouldn't be necessary to declare any of these volatile */
 148     int front, rear, count;
 149     int rear_size;
 150     /*
 151      *  The use of the playing field depends on the hardware
 152      *
 153      *  Atari, PMac: The number of frames that are loaded/playing
 154      *
 155      *  Amiga: Bit 0 is set: a frame is loaded
 156      *         Bit 1 is set: a frame is playing
 157      */
 158     int active;
 159     wait_queue_head_t action_queue, open_queue, sync_queue;
 160     int open_mode;
 161     int busy, syncing, xruns, died;
 162 };
 163
 164 #define SLEEP(queue)            interruptible_sleep_on_timeout(&queue, HZ)
 165 #define WAKE_UP(queue)          (wake_up_interruptible(&queue))
 166
 167 #endif /* _cs4218_h_ */