From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- sound/isa/sb/sb8_main.c | 642 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 642 insertions(+) create mode 100644 sound/isa/sb/sb8_main.c (limited to 'sound/isa/sb/sb8_main.c') diff --git a/sound/isa/sb/sb8_main.c b/sound/isa/sb/sb8_main.c new file mode 100644 index 000000000..9043397fe --- /dev/null +++ b/sound/isa/sb/sb8_main.c @@ -0,0 +1,642 @@ +/* + * Copyright (c) by Jaroslav Kysela + * Uros Bizjak + * + * 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 + * 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 + * Cleaned up and rewrote lowlevel routines. + */ + +#include +#include +#include +#include +#include +#include +#include + +MODULE_AUTHOR("Jaroslav Kysela , Uros Bizjak "); +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 struct snd_ratnum clock = { + .num = SB8_CLOCK, + .den_min = 1, + .den_max = 256, + .den_step = 1, +}; + +static struct snd_pcm_hw_constraint_ratnums hw_constraints_clock = { + .nrats = 1, + .rats = &clock, +}; + +static struct snd_ratnum 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(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *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(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + if (r->min > SB8_RATE(22050) || r->max <= SB8_RATE(11025)) { + struct snd_interval 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(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int mixreg, rate, size, count; + unsigned char format; + unsigned char stereo = runtime->channels > 1; + int dma; + + rate = runtime->rate; + switch (chip->hardware) { + case SB_HW_JAZZ16: + if (runtime->format == SNDRV_PCM_FORMAT_S16_LE) { + if (chip->mode & SB_MODE_CAPTURE_16) + return -EBUSY; + else + chip->mode |= SB_MODE_PLAYBACK_16; + } + chip->playback_format = SB_DSP_LO_OUTPUT_AUTO; + break; + case SB_HW_PRO: + if (runtime->channels > 1) { + if (snd_BUG_ON(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; + } + if (chip->mode & SB_MODE_PLAYBACK_16) { + format = stereo ? SB_DSP_STEREO_16BIT : SB_DSP_MONO_16BIT; + dma = chip->dma16; + } else { + format = stereo ? SB_DSP_STEREO_8BIT : SB_DSP_MONO_8BIT; + chip->mode |= SB_MODE_PLAYBACK_8; + dma = chip->dma8; + } + 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 (chip->hardware == SB_HW_JAZZ16) + snd_sbdsp_command(chip, format); + else if (stereo) { + /* 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(dma, runtime->dma_addr, 1, DMA_MODE_WRITE); + /* force interrupt */ + 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 (stereo) { + 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) { + if (chip->mode & SB_MODE_PLAYBACK_16) + count /= 2; + 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(dma, runtime->dma_addr, + size, DMA_MODE_WRITE | DMA_AUTOINIT); + return 0; +} + +static int snd_sb8_playback_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + unsigned long flags; + struct snd_sb *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) { + struct snd_pcm_runtime *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); + return 0; +} + +static int snd_sb8_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); +} + +static int snd_sb8_hw_free(struct snd_pcm_substream *substream) +{ + snd_pcm_lib_free_pages(substream); + return 0; +} + +static int snd_sb8_capture_prepare(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int mixreg, rate, size, count; + unsigned char format; + unsigned char stereo = runtime->channels > 1; + int dma; + + rate = runtime->rate; + switch (chip->hardware) { + case SB_HW_JAZZ16: + if (runtime->format == SNDRV_PCM_FORMAT_S16_LE) { + if (chip->mode & SB_MODE_PLAYBACK_16) + return -EBUSY; + else + chip->mode |= SB_MODE_CAPTURE_16; + } + chip->capture_format = SB_DSP_LO_INPUT_AUTO; + break; + case SB_HW_PRO: + if (runtime->channels > 1) { + if (snd_BUG_ON(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; + } + if (chip->mode & SB_MODE_CAPTURE_16) { + format = stereo ? SB_DSP_STEREO_16BIT : SB_DSP_MONO_16BIT; + dma = chip->dma16; + } else { + format = stereo ? SB_DSP_STEREO_8BIT : SB_DSP_MONO_8BIT; + chip->mode |= SB_MODE_CAPTURE_8; + dma = chip->dma8; + } + 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 (chip->hardware == SB_HW_JAZZ16) + snd_sbdsp_command(chip, format); + else if (stereo) + snd_sbdsp_command(chip, SB_DSP_STEREO_8BIT); + snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE); + if (stereo) { + 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_INPUT) { + if (chip->mode & SB_MODE_PLAYBACK_16) + count /= 2; + 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(dma, runtime->dma_addr, + size, DMA_MODE_READ | DMA_AUTOINIT); + return 0; +} + +static int snd_sb8_capture_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + unsigned long flags; + struct snd_sb *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) { + struct snd_pcm_runtime *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); + return 0; +} + +irqreturn_t snd_sb8dsp_interrupt(struct snd_sb *chip) +{ + struct snd_pcm_substream *substream; + struct snd_pcm_runtime *runtime; + + snd_sb_ack_8bit(chip); + switch (chip->mode) { + case SB_MODE_PLAYBACK_16: /* ok.. playback is active */ + if (chip->hardware != SB_HW_JAZZ16) + break; + /* fallthru */ + case SB_MODE_PLAYBACK_8: + 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_16: + if (chip->hardware != SB_HW_JAZZ16) + break; + /* fallthru */ + 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(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + size_t ptr; + int dma; + + if (chip->mode & SB_MODE_PLAYBACK_8) + dma = chip->dma8; + else if (chip->mode & SB_MODE_PLAYBACK_16) + dma = chip->dma16; + else + return 0; + ptr = snd_dma_pointer(dma, chip->p_dma_size); + return bytes_to_frames(substream->runtime, ptr); +} + +static snd_pcm_uframes_t snd_sb8_capture_pointer(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + size_t ptr; + int dma; + + if (chip->mode & SB_MODE_CAPTURE_8) + dma = chip->dma8; + else if (chip->mode & SB_MODE_CAPTURE_16) + dma = chip->dma16; + else + return 0; + ptr = snd_dma_pointer(dma, chip->c_dma_size); + return bytes_to_frames(substream->runtime, ptr); +} + +/* + + */ + +static struct snd_pcm_hardware 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 struct snd_pcm_hardware 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(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *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_JAZZ16: + if (chip->dma16 == 5 || chip->dma16 == 7) + runtime->hw.formats |= SNDRV_PCM_FMTBIT_S16_LE; + runtime->hw.rates |= SNDRV_PCM_RATE_8000_48000; + runtime->hw.rate_min = 4000; + runtime->hw.rate_max = 50000; + runtime->hw.channels_max = 2; + break; + 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); + if (chip->dma8 > 3 || chip->dma16 >= 0) { + snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 2); + snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 2); + runtime->hw.buffer_bytes_max = 128 * 1024 * 1024; + runtime->hw.period_bytes_max = 128 * 1024 * 1024; + } + return 0; +} + +static int snd_sb8_close(struct snd_pcm_substream *substream) +{ + unsigned long flags; + struct snd_sb *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; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + chip->mode &= ~SB_MODE_PLAYBACK; + else + chip->mode &= ~SB_MODE_CAPTURE; + spin_unlock_irqrestore(&chip->open_lock, flags); + return 0; +} + +/* + * Initialization part + */ + +static struct snd_pcm_ops 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 struct snd_pcm_ops 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, +}; + +int snd_sb8dsp_pcm(struct snd_sb *chip, int device) +{ + struct snd_card *card = chip->card; + struct snd_pcm *pcm; + int err; + size_t max_prealloc = 64 * 1024; + + 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; + + 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); + + if (chip->dma8 > 3 || chip->dma16 >= 0) + max_prealloc = 128 * 1024; + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, + snd_dma_isa_data(), + 64*1024, max_prealloc); + + 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) -- cgit v1.2.3-54-g00ecf