![Al Viro](/assets/img/avatar_default.png)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
168 lines
5.3 KiB
C
168 lines
5.3 KiB
C
#ifndef _cs4218_h_
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/*
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* Hacked version of linux/drivers/sound/dmasound/dmasound.h
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*
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*
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* Minor numbers for the sound driver.
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*
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* Unfortunately Creative called the codec chip of SB as a DSP. For this
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* reason the /dev/dsp is reserved for digitized audio use. There is a
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* device for true DSP processors but it will be called something else.
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* In v3.0 it's /dev/sndproc but this could be a temporary solution.
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*/
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#define _cs4218_h_
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#include <linux/types.h>
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#include <linux/config.h>
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#define SND_NDEVS 256 /* Number of supported devices */
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#define SND_DEV_CTL 0 /* Control port /dev/mixer */
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#define SND_DEV_SEQ 1 /* Sequencer output /dev/sequencer (FM
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synthesizer and MIDI output) */
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#define SND_DEV_MIDIN 2 /* Raw midi access */
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#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
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#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
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#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
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#define SND_DEV_STATUS 6 /* /dev/sndstat */
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/* #7 not in use now. Was in 2.4. Free for use after v3.0. */
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#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
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#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
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#define SND_DEV_PSS SND_DEV_SNDPROC
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/* switch on various prinks */
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#define DEBUG_DMASOUND 1
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#define MAX_AUDIO_DEV 5
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#define MAX_MIXER_DEV 4
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#define MAX_SYNTH_DEV 3
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#define MAX_MIDI_DEV 6
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#define MAX_TIMER_DEV 3
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#define MAX_CATCH_RADIUS 10
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#define le2be16(x) (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
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#define le2be16dbl(x) (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
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#define IOCTL_IN(arg, ret) \
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do { int error = get_user(ret, (int *)(arg)); \
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if (error) return error; \
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} while (0)
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#define IOCTL_OUT(arg, ret) ioctl_return((int *)(arg), ret)
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static inline int ioctl_return(int *addr, int value)
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{
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return value < 0 ? value : put_user(value, addr);
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}
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#define HAS_RECORD
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/*
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* Initialization
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*/
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/* description of the set-up applies to either hard or soft settings */
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typedef struct {
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int format; /* AFMT_* */
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int stereo; /* 0 = mono, 1 = stereo */
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int size; /* 8/16 bit*/
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int speed; /* speed */
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} SETTINGS;
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/*
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* Machine definitions
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*/
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typedef struct {
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const char *name;
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const char *name2;
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void (*open)(void);
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void (*release)(void);
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void *(*dma_alloc)(unsigned int, gfp_t);
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void (*dma_free)(void *, unsigned int);
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int (*irqinit)(void);
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#ifdef MODULE
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void (*irqcleanup)(void);
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#endif
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void (*init)(void);
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void (*silence)(void);
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int (*setFormat)(int);
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int (*setVolume)(int);
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int (*setBass)(int);
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int (*setTreble)(int);
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int (*setGain)(int);
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void (*play)(void);
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void (*record)(void); /* optional */
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void (*mixer_init)(void); /* optional */
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int (*mixer_ioctl)(u_int, u_long); /* optional */
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int (*write_sq_setup)(void); /* optional */
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int (*read_sq_setup)(void); /* optional */
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int (*sq_open)(mode_t); /* optional */
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int (*state_info)(char *, size_t); /* optional */
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void (*abort_read)(void); /* optional */
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int min_dsp_speed;
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int max_dsp_speed;
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int version ;
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int hardware_afmts ; /* OSS says we only return h'ware info */
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/* when queried via SNDCTL_DSP_GETFMTS */
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int capabilities ; /* low-level reply to SNDCTL_DSP_GETCAPS */
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SETTINGS default_hard ; /* open() or init() should set something valid */
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SETTINGS default_soft ; /* you can make it look like old OSS, if you want to */
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} MACHINE;
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/*
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* Low level stuff
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*/
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typedef struct {
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ssize_t (*ct_ulaw)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_alaw)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_s8)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_u8)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_s16be)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_u16be)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_s16le)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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ssize_t (*ct_u16le)(const u_char *, size_t, u_char *, ssize_t *, ssize_t);
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} TRANS;
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/*
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* Sound queue stuff, the heart of the driver
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*/
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struct sound_queue {
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/* buffers allocated for this queue */
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int numBufs; /* real limits on what the user can have */
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int bufSize; /* in bytes */
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char **buffers;
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/* current parameters */
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int locked ; /* params cannot be modified when != 0 */
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int user_frags ; /* user requests this many */
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int user_frag_size ; /* of this size */
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int max_count; /* actual # fragments <= numBufs */
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int block_size; /* internal block size in bytes */
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int max_active; /* in-use fragments <= max_count */
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/* it shouldn't be necessary to declare any of these volatile */
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int front, rear, count;
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int rear_size;
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/*
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* The use of the playing field depends on the hardware
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*
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* Atari, PMac: The number of frames that are loaded/playing
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*
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* Amiga: Bit 0 is set: a frame is loaded
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* Bit 1 is set: a frame is playing
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*/
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int active;
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wait_queue_head_t action_queue, open_queue, sync_queue;
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int open_mode;
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int busy, syncing, xruns, died;
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};
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#define SLEEP(queue) interruptible_sleep_on_timeout(&queue, HZ)
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#define WAKE_UP(queue) (wake_up_interruptible(&queue))
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#endif /* _cs4218_h_ */
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