pcsp.h File Reference

#include <linux/hrtimer.h>
#include <linux/i8253.h>
#include <linux/timex.h>

Go to the source code of this file.

Data Structures
struct	snd_pcsp

Macros
#define	PCSP_SOUND_VERSION   0x400 /* read 4.00 */
#define	PCSP_DEBUG   0
#define	DIV_18KHZ   64
#define	MAX_DIV   DIV_18KHZ
#define	CALC_DIV(d)   (MAX_DIV >> (d))
#define	CUR_DIV()   CALC_DIV(chip->treble)
#define	PCSP_MAX_TREBLE   1
#define	PCSP_DEFAULT_TREBLE   0
#define	MIN_DIV   (MAX_DIV >> PCSP_MAX_TREBLE)
#define	PCSP_MIN_LPJ   1000000
#define	PCSP_DEFAULT_SDIV   (DIV_18KHZ >> 1)
#define	PCSP_DEFAULT_SRATE   (PIT_TICK_RATE / PCSP_DEFAULT_SDIV)
#define	PCSP_INDEX_INC()   (1 << (PCSP_MAX_TREBLE - chip->treble))
#define	PCSP_CALC_RATE(i)   (PIT_TICK_RATE / CALC_DIV(i))
#define	PCSP_RATE()   PCSP_CALC_RATE(chip->treble)
#define	PCSP_MIN_RATE__1   MAX_DIV/PIT_TICK_RATE
#define	PCSP_MAX_RATE__1   MIN_DIV/PIT_TICK_RATE
#define	PCSP_MAX_PERIOD_NS   (1000000000ULL * PCSP_MIN_RATE__1)
#define	PCSP_MIN_PERIOD_NS   (1000000000ULL * PCSP_MAX_RATE__1)
#define	PCSP_CALC_NS(div)
#define	PCSP_PERIOD_NS()   PCSP_CALC_NS(CUR_DIV())
#define	PCSP_MAX_PERIOD_SIZE   (64*1024)
#define	PCSP_MAX_PERIODS   512
#define	PCSP_BUFFER_SIZE   (128*1024)

Functions
enum hrtimer_restart	pcsp_do_timer (struct hrtimer *handle)
void	pcsp_sync_stop (struct snd_pcsp *chip)
int	snd_pcsp_new_pcm (struct snd_pcsp *chip)
int	snd_pcsp_new_mixer (struct snd_pcsp *chip, int nopcm)

Variables
struct snd_pcsp	pcsp_chip

Macro Definition Documentation

#define CALC_DIV

(

d

)

(MAX_DIV >> (d))

Definition at line 22 of file pcsp.h.

#define CUR_DIV

(

)

CALC_DIV(chip->treble)

Definition at line 23 of file pcsp.h.

#define DIV_18KHZ   64

Definition at line 20 of file pcsp.h.

#define MAX_DIV   DIV_18KHZ

Definition at line 21 of file pcsp.h.

#define MIN_DIV   (MAX_DIV >> PCSP_MAX_TREBLE)

Definition at line 28 of file pcsp.h.

#define PCSP_BUFFER_SIZE   (128*1024)

Definition at line 50 of file pcsp.h.

#define PCSP_CALC_NS

(

div

)

Value:

({ \
	u64 __val = 1000000000ULL * (div); \
    do_div(__val, PIT_TICK_RATE); \
    __val; \
})

Definition at line 41 of file pcsp.h.

#define PCSP_CALC_RATE

(

i

)

(PIT_TICK_RATE / CALC_DIV(i))

Definition at line 35 of file pcsp.h.

#define PCSP_DEBUG   0

Definition at line 17 of file pcsp.h.

#define PCSP_DEFAULT_SDIV   (DIV_18KHZ >> 1)

Definition at line 32 of file pcsp.h.

#define PCSP_DEFAULT_SRATE   (PIT_TICK_RATE / PCSP_DEFAULT_SDIV)

Definition at line 33 of file pcsp.h.

#define PCSP_DEFAULT_TREBLE   0

Definition at line 27 of file pcsp.h.

#define PCSP_INDEX_INC

(

)

(1 << (PCSP_MAX_TREBLE - chip->treble))

Definition at line 34 of file pcsp.h.

#define PCSP_MAX_PERIOD_NS   (1000000000ULL * PCSP_MIN_RATE__1)

Definition at line 39 of file pcsp.h.

#define PCSP_MAX_PERIOD_SIZE   (64*1024)

Definition at line 48 of file pcsp.h.

#define PCSP_MAX_PERIODS   512

Definition at line 49 of file pcsp.h.

#define PCSP_MAX_RATE__1   MIN_DIV/PIT_TICK_RATE

Definition at line 38 of file pcsp.h.

#define PCSP_MAX_TREBLE   1

Definition at line 24 of file pcsp.h.

#define PCSP_MIN_LPJ   1000000

Definition at line 31 of file pcsp.h.

#define PCSP_MIN_PERIOD_NS   (1000000000ULL * PCSP_MAX_RATE__1)

Definition at line 40 of file pcsp.h.

#define PCSP_MIN_RATE__1   MAX_DIV/PIT_TICK_RATE

Definition at line 37 of file pcsp.h.

#define PCSP_PERIOD_NS

(

)

PCSP_CALC_NS(CUR_DIV())

Definition at line 46 of file pcsp.h.

#define PCSP_RATE

(

)

PCSP_CALC_RATE(chip->treble)

Definition at line 36 of file pcsp.h.

#define PCSP_SOUND_VERSION   0x400 /* read 4.00 */

Definition at line 16 of file pcsp.h.

Function Documentation

enum hrtimer_restart pcsp_do_timer

(

struct hrtimer *

handle

)

Definition at line 128 of file pcsp_lib.c.

void pcsp_sync_stop

(

struct snd_pcsp *

chip

)

Definition at line 192 of file pcsp_lib.c.

int snd_pcsp_new_mixer	(	struct snd_pcsp *	chip,
		int	nopcm
	)

Definition at line 144 of file pcsp_mixer.c.

int snd_pcsp_new_pcm

(

struct snd_pcsp *

chip

)

Definition at line 337 of file pcsp_lib.c.

Variable Documentation

struct snd_pcsp pcsp_chip

Definition at line 40 of file pcsp.c.