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/arch/ppc/8xx_io/cs4218.h

https://bitbucket.org/evzijst/gittest
C Header | 167 lines | 105 code | 23 blank | 39 comment | 2 complexity | d577211600f932e0f819793e5b7af224 MD5 | raw file
  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
 52static 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
 65typedef 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
 76typedef 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
117typedef 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
133struct 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_ */