563 lines
16 KiB
C
563 lines
16 KiB
C
/*
|
|
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
|
|
* Uros Bizjak <uros@kss-loka.si>
|
|
*
|
|
* Routines for control of 8-bit SoundBlaster cards and clones
|
|
* Please note: I don't have access to old SB8 soundcards.
|
|
*
|
|
*
|
|
* 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
|
|
*
|
|
* --
|
|
*
|
|
* Thu Apr 29 20:36:17 BST 1999 George David Morrison <gdm@gedamo.demon.co.uk>
|
|
* DSP can't respond to commands whilst in "high speed" mode. Caused
|
|
* glitching during playback. Fixed.
|
|
*
|
|
* Wed Jul 12 22:02:55 CEST 2000 Uros Bizjak <uros@kss-loka.si>
|
|
* Cleaned up and rewrote lowlevel routines.
|
|
*/
|
|
|
|
#include <sound/driver.h>
|
|
#include <asm/io.h>
|
|
#include <asm/dma.h>
|
|
#include <linux/init.h>
|
|
#include <linux/time.h>
|
|
#include <sound/core.h>
|
|
#include <sound/sb.h>
|
|
|
|
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Uros Bizjak <uros@kss-loka.si>");
|
|
MODULE_DESCRIPTION("Routines for control of 8-bit SoundBlaster cards and clones");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#define SB8_CLOCK 1000000
|
|
#define SB8_DEN(v) ((SB8_CLOCK + (v) / 2) / (v))
|
|
#define SB8_RATE(v) (SB8_CLOCK / SB8_DEN(v))
|
|
|
|
static ratnum_t clock = {
|
|
.num = SB8_CLOCK,
|
|
.den_min = 1,
|
|
.den_max = 256,
|
|
.den_step = 1,
|
|
};
|
|
|
|
static snd_pcm_hw_constraint_ratnums_t hw_constraints_clock = {
|
|
.nrats = 1,
|
|
.rats = &clock,
|
|
};
|
|
|
|
static ratnum_t stereo_clocks[] = {
|
|
{
|
|
.num = SB8_CLOCK,
|
|
.den_min = SB8_DEN(22050),
|
|
.den_max = SB8_DEN(22050),
|
|
.den_step = 1,
|
|
},
|
|
{
|
|
.num = SB8_CLOCK,
|
|
.den_min = SB8_DEN(11025),
|
|
.den_max = SB8_DEN(11025),
|
|
.den_step = 1,
|
|
}
|
|
};
|
|
|
|
static int snd_sb8_hw_constraint_rate_channels(snd_pcm_hw_params_t *params,
|
|
snd_pcm_hw_rule_t *rule)
|
|
{
|
|
snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
|
|
if (c->min > 1) {
|
|
unsigned int num = 0, den = 0;
|
|
int err = snd_interval_ratnum(hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE),
|
|
2, stereo_clocks, &num, &den);
|
|
if (err >= 0 && den) {
|
|
params->rate_num = num;
|
|
params->rate_den = den;
|
|
}
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_hw_constraint_channels_rate(snd_pcm_hw_params_t *params,
|
|
snd_pcm_hw_rule_t *rule)
|
|
{
|
|
snd_interval_t *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
|
|
if (r->min > SB8_RATE(22050) || r->max <= SB8_RATE(11025)) {
|
|
snd_interval_t t = { .min = 1, .max = 1 };
|
|
return snd_interval_refine(hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS), &t);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_playback_prepare(snd_pcm_substream_t * substream)
|
|
{
|
|
unsigned long flags;
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
unsigned int mixreg, rate, size, count;
|
|
|
|
rate = runtime->rate;
|
|
switch (chip->hardware) {
|
|
case SB_HW_PRO:
|
|
if (runtime->channels > 1) {
|
|
snd_assert(rate == SB8_RATE(11025) || rate == SB8_RATE(22050), return -EINVAL);
|
|
chip->playback_format = SB_DSP_HI_OUTPUT_AUTO;
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
case SB_HW_201:
|
|
if (rate > 23000) {
|
|
chip->playback_format = SB_DSP_HI_OUTPUT_AUTO;
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
case SB_HW_20:
|
|
chip->playback_format = SB_DSP_LO_OUTPUT_AUTO;
|
|
break;
|
|
case SB_HW_10:
|
|
chip->playback_format = SB_DSP_OUTPUT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream);
|
|
count = chip->p_period_size = snd_pcm_lib_period_bytes(substream);
|
|
spin_lock_irqsave(&chip->reg_lock, flags);
|
|
snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON);
|
|
if (runtime->channels > 1) {
|
|
/* set playback stereo mode */
|
|
spin_lock(&chip->mixer_lock);
|
|
mixreg = snd_sbmixer_read(chip, SB_DSP_STEREO_SW);
|
|
snd_sbmixer_write(chip, SB_DSP_STEREO_SW, mixreg | 0x02);
|
|
spin_unlock(&chip->mixer_lock);
|
|
|
|
/* Soundblaster hardware programming reference guide, 3-23 */
|
|
snd_sbdsp_command(chip, SB_DSP_DMA8_EXIT);
|
|
runtime->dma_area[0] = 0x80;
|
|
snd_dma_program(chip->dma8, runtime->dma_addr, 1, DMA_MODE_WRITE);
|
|
/* force interrupt */
|
|
chip->mode = SB_MODE_HALT;
|
|
snd_sbdsp_command(chip, SB_DSP_OUTPUT);
|
|
snd_sbdsp_command(chip, 0);
|
|
snd_sbdsp_command(chip, 0);
|
|
}
|
|
snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE);
|
|
if (runtime->channels > 1) {
|
|
snd_sbdsp_command(chip, 256 - runtime->rate_den / 2);
|
|
spin_lock(&chip->mixer_lock);
|
|
/* save output filter status and turn it off */
|
|
mixreg = snd_sbmixer_read(chip, SB_DSP_PLAYBACK_FILT);
|
|
snd_sbmixer_write(chip, SB_DSP_PLAYBACK_FILT, mixreg | 0x20);
|
|
spin_unlock(&chip->mixer_lock);
|
|
/* just use force_mode16 for temporary storate... */
|
|
chip->force_mode16 = mixreg;
|
|
} else {
|
|
snd_sbdsp_command(chip, 256 - runtime->rate_den);
|
|
}
|
|
if (chip->playback_format != SB_DSP_OUTPUT) {
|
|
count--;
|
|
snd_sbdsp_command(chip, SB_DSP_BLOCK_SIZE);
|
|
snd_sbdsp_command(chip, count & 0xff);
|
|
snd_sbdsp_command(chip, count >> 8);
|
|
}
|
|
spin_unlock_irqrestore(&chip->reg_lock, flags);
|
|
snd_dma_program(chip->dma8, runtime->dma_addr,
|
|
size, DMA_MODE_WRITE | DMA_AUTOINIT);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_playback_trigger(snd_pcm_substream_t * substream,
|
|
int cmd)
|
|
{
|
|
unsigned long flags;
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
unsigned int count;
|
|
|
|
spin_lock_irqsave(&chip->reg_lock, flags);
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
snd_sbdsp_command(chip, chip->playback_format);
|
|
if (chip->playback_format == SB_DSP_OUTPUT) {
|
|
count = chip->p_period_size - 1;
|
|
snd_sbdsp_command(chip, count & 0xff);
|
|
snd_sbdsp_command(chip, count >> 8);
|
|
}
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
if (chip->playback_format == SB_DSP_HI_OUTPUT_AUTO) {
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
snd_sbdsp_reset(chip);
|
|
if (runtime->channels > 1) {
|
|
spin_lock(&chip->mixer_lock);
|
|
/* restore output filter and set hardware to mono mode */
|
|
snd_sbmixer_write(chip, SB_DSP_STEREO_SW, chip->force_mode16 & ~0x02);
|
|
spin_unlock(&chip->mixer_lock);
|
|
}
|
|
} else {
|
|
snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
|
|
}
|
|
snd_sbdsp_command(chip, SB_DSP_SPEAKER_OFF);
|
|
}
|
|
spin_unlock_irqrestore(&chip->reg_lock, flags);
|
|
chip->mode = (cmd == SNDRV_PCM_TRIGGER_START) ? SB_MODE_PLAYBACK_8 : SB_MODE_HALT;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_hw_params(snd_pcm_substream_t * substream,
|
|
snd_pcm_hw_params_t * hw_params)
|
|
{
|
|
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
|
|
}
|
|
|
|
static int snd_sb8_hw_free(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_pcm_lib_free_pages(substream);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_capture_prepare(snd_pcm_substream_t * substream)
|
|
{
|
|
unsigned long flags;
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
unsigned int mixreg, rate, size, count;
|
|
|
|
rate = runtime->rate;
|
|
switch (chip->hardware) {
|
|
case SB_HW_PRO:
|
|
if (runtime->channels > 1) {
|
|
snd_assert(rate == SB8_RATE(11025) || rate == SB8_RATE(22050), return -EINVAL);
|
|
chip->capture_format = SB_DSP_HI_INPUT_AUTO;
|
|
break;
|
|
}
|
|
chip->capture_format = (rate > 23000) ? SB_DSP_HI_INPUT_AUTO : SB_DSP_LO_INPUT_AUTO;
|
|
break;
|
|
case SB_HW_201:
|
|
if (rate > 13000) {
|
|
chip->capture_format = SB_DSP_HI_INPUT_AUTO;
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
case SB_HW_20:
|
|
chip->capture_format = SB_DSP_LO_INPUT_AUTO;
|
|
break;
|
|
case SB_HW_10:
|
|
chip->capture_format = SB_DSP_INPUT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
|
|
count = chip->c_period_size = snd_pcm_lib_period_bytes(substream);
|
|
spin_lock_irqsave(&chip->reg_lock, flags);
|
|
snd_sbdsp_command(chip, SB_DSP_SPEAKER_OFF);
|
|
if (runtime->channels > 1)
|
|
snd_sbdsp_command(chip, SB_DSP_STEREO_8BIT);
|
|
snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE);
|
|
if (runtime->channels > 1) {
|
|
snd_sbdsp_command(chip, 256 - runtime->rate_den / 2);
|
|
spin_lock(&chip->mixer_lock);
|
|
/* save input filter status and turn it off */
|
|
mixreg = snd_sbmixer_read(chip, SB_DSP_CAPTURE_FILT);
|
|
snd_sbmixer_write(chip, SB_DSP_CAPTURE_FILT, mixreg | 0x20);
|
|
spin_unlock(&chip->mixer_lock);
|
|
/* just use force_mode16 for temporary storate... */
|
|
chip->force_mode16 = mixreg;
|
|
} else {
|
|
snd_sbdsp_command(chip, 256 - runtime->rate_den);
|
|
}
|
|
if (chip->capture_format != SB_DSP_OUTPUT) {
|
|
count--;
|
|
snd_sbdsp_command(chip, SB_DSP_BLOCK_SIZE);
|
|
snd_sbdsp_command(chip, count & 0xff);
|
|
snd_sbdsp_command(chip, count >> 8);
|
|
}
|
|
spin_unlock_irqrestore(&chip->reg_lock, flags);
|
|
snd_dma_program(chip->dma8, runtime->dma_addr,
|
|
size, DMA_MODE_READ | DMA_AUTOINIT);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_capture_trigger(snd_pcm_substream_t * substream,
|
|
int cmd)
|
|
{
|
|
unsigned long flags;
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
unsigned int count;
|
|
|
|
spin_lock_irqsave(&chip->reg_lock, flags);
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
snd_sbdsp_command(chip, chip->capture_format);
|
|
if (chip->capture_format == SB_DSP_INPUT) {
|
|
count = chip->c_period_size - 1;
|
|
snd_sbdsp_command(chip, count & 0xff);
|
|
snd_sbdsp_command(chip, count >> 8);
|
|
}
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
if (chip->capture_format == SB_DSP_HI_INPUT_AUTO) {
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
snd_sbdsp_reset(chip);
|
|
if (runtime->channels > 1) {
|
|
/* restore input filter status */
|
|
spin_lock(&chip->mixer_lock);
|
|
snd_sbmixer_write(chip, SB_DSP_CAPTURE_FILT, chip->force_mode16);
|
|
spin_unlock(&chip->mixer_lock);
|
|
/* set hardware to mono mode */
|
|
snd_sbdsp_command(chip, SB_DSP_MONO_8BIT);
|
|
}
|
|
} else {
|
|
snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
|
|
}
|
|
snd_sbdsp_command(chip, SB_DSP_SPEAKER_OFF);
|
|
}
|
|
spin_unlock_irqrestore(&chip->reg_lock, flags);
|
|
chip->mode = (cmd == SNDRV_PCM_TRIGGER_START) ? SB_MODE_CAPTURE_8 : SB_MODE_HALT;
|
|
return 0;
|
|
}
|
|
|
|
irqreturn_t snd_sb8dsp_interrupt(sb_t *chip)
|
|
{
|
|
snd_pcm_substream_t *substream;
|
|
snd_pcm_runtime_t *runtime;
|
|
|
|
snd_sb_ack_8bit(chip);
|
|
switch (chip->mode) {
|
|
case SB_MODE_PLAYBACK_8: /* ok.. playback is active */
|
|
substream = chip->playback_substream;
|
|
runtime = substream->runtime;
|
|
if (chip->playback_format == SB_DSP_OUTPUT)
|
|
snd_sb8_playback_trigger(substream, SNDRV_PCM_TRIGGER_START);
|
|
snd_pcm_period_elapsed(substream);
|
|
break;
|
|
case SB_MODE_CAPTURE_8:
|
|
substream = chip->capture_substream;
|
|
runtime = substream->runtime;
|
|
if (chip->capture_format == SB_DSP_INPUT)
|
|
snd_sb8_capture_trigger(substream, SNDRV_PCM_TRIGGER_START);
|
|
snd_pcm_period_elapsed(substream);
|
|
break;
|
|
}
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static snd_pcm_uframes_t snd_sb8_playback_pointer(snd_pcm_substream_t * substream)
|
|
{
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
size_t ptr;
|
|
|
|
if (chip->mode != SB_MODE_PLAYBACK_8)
|
|
return 0;
|
|
ptr = snd_dma_pointer(chip->dma8, chip->p_dma_size);
|
|
return bytes_to_frames(substream->runtime, ptr);
|
|
}
|
|
|
|
static snd_pcm_uframes_t snd_sb8_capture_pointer(snd_pcm_substream_t * substream)
|
|
{
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
size_t ptr;
|
|
|
|
if (chip->mode != SB_MODE_CAPTURE_8)
|
|
return 0;
|
|
ptr = snd_dma_pointer(chip->dma8, chip->c_dma_size);
|
|
return bytes_to_frames(substream->runtime, ptr);
|
|
}
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
static snd_pcm_hardware_t snd_sb8_playback =
|
|
{
|
|
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_MMAP_VALID),
|
|
.formats = SNDRV_PCM_FMTBIT_U8,
|
|
.rates = (SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000 |
|
|
SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_22050),
|
|
.rate_min = 4000,
|
|
.rate_max = 23000,
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.buffer_bytes_max = 65536,
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = 65536,
|
|
.periods_min = 1,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
static snd_pcm_hardware_t snd_sb8_capture =
|
|
{
|
|
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_MMAP_VALID),
|
|
.formats = SNDRV_PCM_FMTBIT_U8,
|
|
.rates = (SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000 |
|
|
SNDRV_PCM_RATE_11025),
|
|
.rate_min = 4000,
|
|
.rate_max = 13000,
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.buffer_bytes_max = 65536,
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = 65536,
|
|
.periods_min = 1,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
static int snd_sb8_open(snd_pcm_substream_t *substream)
|
|
{
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&chip->open_lock, flags);
|
|
if (chip->open) {
|
|
spin_unlock_irqrestore(&chip->open_lock, flags);
|
|
return -EAGAIN;
|
|
}
|
|
chip->open |= SB_OPEN_PCM;
|
|
spin_unlock_irqrestore(&chip->open_lock, flags);
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
chip->playback_substream = substream;
|
|
runtime->hw = snd_sb8_playback;
|
|
} else {
|
|
chip->capture_substream = substream;
|
|
runtime->hw = snd_sb8_capture;
|
|
}
|
|
switch (chip->hardware) {
|
|
case SB_HW_PRO:
|
|
runtime->hw.rate_max = 44100;
|
|
runtime->hw.channels_max = 2;
|
|
snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
|
|
snd_sb8_hw_constraint_rate_channels, NULL,
|
|
SNDRV_PCM_HW_PARAM_CHANNELS,
|
|
SNDRV_PCM_HW_PARAM_RATE, -1);
|
|
snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
|
|
snd_sb8_hw_constraint_channels_rate, NULL,
|
|
SNDRV_PCM_HW_PARAM_RATE, -1);
|
|
break;
|
|
case SB_HW_201:
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
runtime->hw.rate_max = 44100;
|
|
} else {
|
|
runtime->hw.rate_max = 15000;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
|
|
&hw_constraints_clock);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_sb8_close(snd_pcm_substream_t *substream)
|
|
{
|
|
unsigned long flags;
|
|
sb_t *chip = snd_pcm_substream_chip(substream);
|
|
|
|
chip->playback_substream = NULL;
|
|
chip->capture_substream = NULL;
|
|
spin_lock_irqsave(&chip->open_lock, flags);
|
|
chip->open &= ~SB_OPEN_PCM;
|
|
spin_unlock_irqrestore(&chip->open_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initialization part
|
|
*/
|
|
|
|
static snd_pcm_ops_t snd_sb8_playback_ops = {
|
|
.open = snd_sb8_open,
|
|
.close = snd_sb8_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_sb8_hw_params,
|
|
.hw_free = snd_sb8_hw_free,
|
|
.prepare = snd_sb8_playback_prepare,
|
|
.trigger = snd_sb8_playback_trigger,
|
|
.pointer = snd_sb8_playback_pointer,
|
|
};
|
|
|
|
static snd_pcm_ops_t snd_sb8_capture_ops = {
|
|
.open = snd_sb8_open,
|
|
.close = snd_sb8_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_sb8_hw_params,
|
|
.hw_free = snd_sb8_hw_free,
|
|
.prepare = snd_sb8_capture_prepare,
|
|
.trigger = snd_sb8_capture_trigger,
|
|
.pointer = snd_sb8_capture_pointer,
|
|
};
|
|
|
|
static void snd_sb8dsp_pcm_free(snd_pcm_t *pcm)
|
|
{
|
|
snd_pcm_lib_preallocate_free_for_all(pcm);
|
|
}
|
|
|
|
int snd_sb8dsp_pcm(sb_t *chip, int device, snd_pcm_t ** rpcm)
|
|
{
|
|
snd_card_t *card = chip->card;
|
|
snd_pcm_t *pcm;
|
|
int err;
|
|
|
|
if (rpcm)
|
|
*rpcm = NULL;
|
|
if ((err = snd_pcm_new(card, "SB8 DSP", device, 1, 1, &pcm)) < 0)
|
|
return err;
|
|
sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff);
|
|
pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
|
|
pcm->private_data = chip;
|
|
pcm->private_free = snd_sb8dsp_pcm_free;
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb8_playback_ops);
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb8_capture_ops);
|
|
|
|
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
|
|
snd_dma_isa_data(),
|
|
64*1024, 64*1024);
|
|
|
|
if (rpcm)
|
|
*rpcm = pcm;
|
|
return 0;
|
|
}
|
|
|
|
EXPORT_SYMBOL(snd_sb8dsp_pcm);
|
|
EXPORT_SYMBOL(snd_sb8dsp_interrupt);
|
|
/* sb8_midi.c */
|
|
EXPORT_SYMBOL(snd_sb8dsp_midi_interrupt);
|
|
EXPORT_SYMBOL(snd_sb8dsp_midi);
|
|
|
|
/*
|
|
* INIT part
|
|
*/
|
|
|
|
static int __init alsa_sb8_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void __exit alsa_sb8_exit(void)
|
|
{
|
|
}
|
|
|
|
module_init(alsa_sb8_init)
|
|
module_exit(alsa_sb8_exit)
|