diff options
Diffstat (limited to 'sound/oss/sb_audio.c')
| -rw-r--r-- | sound/oss/sb_audio.c | 1097 |
1 files changed, 0 insertions, 1097 deletions
diff --git a/sound/oss/sb_audio.c b/sound/oss/sb_audio.c deleted file mode 100644 index dc91072f4d82..000000000000 --- a/sound/oss/sb_audio.c +++ /dev/null @@ -1,1097 +0,0 @@ -/* - * sound/oss/sb_audio.c - * - * Audio routines for Sound Blaster compatible cards. - * - * - * Copyright (C) by Hannu Savolainen 1993-1997 - * - * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) - * Version 2 (June 1991). See the "COPYING" file distributed with this software - * for more info. - * - * Changes - * Alan Cox : Formatting and clean ups - * - * Status - * Mostly working. Weird uart bug causing irq storms - * - * Daniel J. Rodriksson: Changes to make sb16 work full duplex. - * Maybe other 16 bit cards in this code could behave - * the same. - * Chris Rankin: Use spinlocks instead of CLI/STI - */ - -#include <linux/spinlock.h> - -#include "sound_config.h" - -#include "sb_mixer.h" -#include "sb.h" - -#include "sb_ess.h" - -int sb_audio_open(int dev, int mode) -{ - sb_devc *devc = audio_devs[dev]->devc; - unsigned long flags; - - if (devc == NULL) - { - printk(KERN_ERR "Sound Blaster: incomplete initialization.\n"); - return -ENXIO; - } - if (devc->caps & SB_NO_RECORDING && mode & OPEN_READ) - { - if (mode == OPEN_READ) - return -EPERM; - } - spin_lock_irqsave(&devc->lock, flags); - if (devc->opened) - { - spin_unlock_irqrestore(&devc->lock, flags); - return -EBUSY; - } - if (devc->dma16 != -1 && devc->dma16 != devc->dma8 && !devc->duplex) - { - if (sound_open_dma(devc->dma16, "Sound Blaster 16 bit")) - { - spin_unlock_irqrestore(&devc->lock, flags); - return -EBUSY; - } - } - devc->opened = mode; - spin_unlock_irqrestore(&devc->lock, flags); - - devc->irq_mode = IMODE_NONE; - devc->irq_mode_16 = IMODE_NONE; - devc->fullduplex = devc->duplex && - ((mode & OPEN_READ) && (mode & OPEN_WRITE)); - sb_dsp_reset(devc); - - /* At first glance this check isn't enough, some ESS chips might not - * have a RECLEV. However if they don't common_mixer_set will refuse - * cause devc->iomap has no register mapping for RECLEV - */ - if (devc->model == MDL_ESS) ess_mixer_reload (devc, SOUND_MIXER_RECLEV); - - /* The ALS007 seems to require that the DSP be removed from the output */ - /* in order for recording to be activated properly. This is done by */ - /* setting the appropriate bits of the output control register 4ch to */ - /* zero. This code assumes that the output control registers are not */ - /* used anywhere else and therefore the DSP bits are *always* ON for */ - /* output and OFF for sampling. */ - - if (devc->submodel == SUBMDL_ALS007) - { - if (mode & OPEN_READ) - sb_setmixer(devc,ALS007_OUTPUT_CTRL2, - sb_getmixer(devc,ALS007_OUTPUT_CTRL2) & 0xf9); - else - sb_setmixer(devc,ALS007_OUTPUT_CTRL2, - sb_getmixer(devc,ALS007_OUTPUT_CTRL2) | 0x06); - } - return 0; -} - -void sb_audio_close(int dev) -{ - sb_devc *devc = audio_devs[dev]->devc; - - /* fix things if mmap turned off fullduplex */ - if(devc->duplex - && !devc->fullduplex - && (devc->opened & OPEN_READ) && (devc->opened & OPEN_WRITE)) - swap(audio_devs[dev]->dmap_out, audio_devs[dev]->dmap_in); - - audio_devs[dev]->dmap_out->dma = devc->dma8; - audio_devs[dev]->dmap_in->dma = ( devc->duplex ) ? - devc->dma16 : devc->dma8; - - if (devc->dma16 != -1 && devc->dma16 != devc->dma8 && !devc->duplex) - sound_close_dma(devc->dma16); - - /* For ALS007, turn DSP output back on if closing the device for read */ - - if ((devc->submodel == SUBMDL_ALS007) && (devc->opened & OPEN_READ)) - { - sb_setmixer(devc,ALS007_OUTPUT_CTRL2, - sb_getmixer(devc,ALS007_OUTPUT_CTRL2) | 0x06); - } - devc->opened = 0; -} - -static void sb_set_output_parms(int dev, unsigned long buf, int nr_bytes, - int intrflag) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (!devc->fullduplex || devc->bits == AFMT_S16_LE) - { - devc->trg_buf = buf; - devc->trg_bytes = nr_bytes; - devc->trg_intrflag = intrflag; - devc->irq_mode = IMODE_OUTPUT; - } - else - { - devc->trg_buf_16 = buf; - devc->trg_bytes_16 = nr_bytes; - devc->trg_intrflag_16 = intrflag; - devc->irq_mode_16 = IMODE_OUTPUT; - } -} - -static void sb_set_input_parms(int dev, unsigned long buf, int count, int intrflag) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (!devc->fullduplex || devc->bits != AFMT_S16_LE) - { - devc->trg_buf = buf; - devc->trg_bytes = count; - devc->trg_intrflag = intrflag; - devc->irq_mode = IMODE_INPUT; - } - else - { - devc->trg_buf_16 = buf; - devc->trg_bytes_16 = count; - devc->trg_intrflag_16 = intrflag; - devc->irq_mode_16 = IMODE_INPUT; - } -} - -/* - * SB1.x compatible routines - */ - -static void sb1_audio_output_block(int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - unsigned long flags; - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - - /* DMAbuf_start_dma (dev, buf, count, DMA_MODE_WRITE); */ - - if (audio_devs[dev]->dmap_out->dma > 3) - count >>= 1; - count--; - - devc->irq_mode = IMODE_OUTPUT; - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x14)) /* 8 bit DAC using DMA */ - { - sb_dsp_command(devc, (unsigned char) (count & 0xff)); - sb_dsp_command(devc, (unsigned char) ((count >> 8) & 0xff)); - } - else - printk(KERN_WARNING "Sound Blaster: unable to start DAC.\n"); - spin_unlock_irqrestore(&devc->lock, flags); - devc->intr_active = 1; -} - -static void sb1_audio_start_input(int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - unsigned long flags; - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - - /* - * Start a DMA input to the buffer pointed by dmaqtail - */ - - /* DMAbuf_start_dma (dev, buf, count, DMA_MODE_READ); */ - - if (audio_devs[dev]->dmap_out->dma > 3) - count >>= 1; - count--; - - devc->irq_mode = IMODE_INPUT; - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x24)) /* 8 bit ADC using DMA */ - { - sb_dsp_command(devc, (unsigned char) (count & 0xff)); - sb_dsp_command(devc, (unsigned char) ((count >> 8) & 0xff)); - } - else - printk(KERN_ERR "Sound Blaster: unable to start ADC.\n"); - spin_unlock_irqrestore(&devc->lock, flags); - - devc->intr_active = 1; -} - -static void sb1_audio_trigger(int dev, int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - - bits &= devc->irq_mode; - - if (!bits) - sb_dsp_command(devc, 0xd0); /* Halt DMA */ - else - { - switch (devc->irq_mode) - { - case IMODE_INPUT: - sb1_audio_start_input(dev, devc->trg_buf, devc->trg_bytes, - devc->trg_intrflag); - break; - - case IMODE_OUTPUT: - sb1_audio_output_block(dev, devc->trg_buf, devc->trg_bytes, - devc->trg_intrflag); - break; - } - } - devc->trigger_bits = bits; -} - -static int sb1_audio_prepare_for_input(int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - unsigned long flags; - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x40)) - sb_dsp_command(devc, devc->tconst); - sb_dsp_command(devc, DSP_CMD_SPKOFF); - spin_unlock_irqrestore(&devc->lock, flags); - - devc->trigger_bits = 0; - return 0; -} - -static int sb1_audio_prepare_for_output(int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - unsigned long flags; - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x40)) - sb_dsp_command(devc, devc->tconst); - sb_dsp_command(devc, DSP_CMD_SPKON); - spin_unlock_irqrestore(&devc->lock, flags); - devc->trigger_bits = 0; - return 0; -} - -static int sb1_audio_set_speed(int dev, int speed) -{ - int max_speed = 23000; - sb_devc *devc = audio_devs[dev]->devc; - int tmp; - - if (devc->opened & OPEN_READ) - max_speed = 13000; - - if (speed > 0) - { - if (speed < 4000) - speed = 4000; - - if (speed > max_speed) - speed = max_speed; - - devc->tconst = (256 - ((1000000 + speed / 2) / speed)) & 0xff; - tmp = 256 - devc->tconst; - speed = (1000000 + tmp / 2) / tmp; - - devc->speed = speed; - } - return devc->speed; -} - -static short sb1_audio_set_channels(int dev, short channels) -{ - sb_devc *devc = audio_devs[dev]->devc; - return devc->channels = 1; -} - -static unsigned int sb1_audio_set_bits(int dev, unsigned int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - return devc->bits = 8; -} - -static void sb1_audio_halt_xfer(int dev) -{ - unsigned long flags; - sb_devc *devc = audio_devs[dev]->devc; - - spin_lock_irqsave(&devc->lock, flags); - sb_dsp_reset(devc); - spin_unlock_irqrestore(&devc->lock, flags); -} - -/* - * SB 2.0 and SB 2.01 compatible routines - */ - -static void sb20_audio_output_block(int dev, unsigned long buf, int nr_bytes, - int intrflag) -{ - unsigned long flags; - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - unsigned char cmd; - - /* DMAbuf_start_dma (dev, buf, count, DMA_MODE_WRITE); */ - - if (audio_devs[dev]->dmap_out->dma > 3) - count >>= 1; - count--; - - devc->irq_mode = IMODE_OUTPUT; - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x48)) /* DSP Block size */ - { - sb_dsp_command(devc, (unsigned char) (count & 0xff)); - sb_dsp_command(devc, (unsigned char) ((count >> 8) & 0xff)); - - if (devc->speed * devc->channels <= 23000) - cmd = 0x1c; /* 8 bit PCM output */ - else - cmd = 0x90; /* 8 bit high speed PCM output (SB2.01/Pro) */ - - if (!sb_dsp_command(devc, cmd)) - printk(KERN_ERR "Sound Blaster: unable to start DAC.\n"); - } - else - printk(KERN_ERR "Sound Blaster: unable to start DAC.\n"); - spin_unlock_irqrestore(&devc->lock, flags); - devc->intr_active = 1; -} - -static void sb20_audio_start_input(int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - unsigned long flags; - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - unsigned char cmd; - - /* - * Start a DMA input to the buffer pointed by dmaqtail - */ - - /* DMAbuf_start_dma (dev, buf, count, DMA_MODE_READ); */ - - if (audio_devs[dev]->dmap_out->dma > 3) - count >>= 1; - count--; - - devc->irq_mode = IMODE_INPUT; - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x48)) /* DSP Block size */ - { - sb_dsp_command(devc, (unsigned char) (count & 0xff)); - sb_dsp_command(devc, (unsigned char) ((count >> 8) & 0xff)); - - if (devc->speed * devc->channels <= (devc->major == 3 ? 23000 : 13000)) - cmd = 0x2c; /* 8 bit PCM input */ - else - cmd = 0x98; /* 8 bit high speed PCM input (SB2.01/Pro) */ - - if (!sb_dsp_command(devc, cmd)) - printk(KERN_ERR "Sound Blaster: unable to start ADC.\n"); - } - else - printk(KERN_ERR "Sound Blaster: unable to start ADC.\n"); - spin_unlock_irqrestore(&devc->lock, flags); - devc->intr_active = 1; -} - -static void sb20_audio_trigger(int dev, int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - bits &= devc->irq_mode; - - if (!bits) - sb_dsp_command(devc, 0xd0); /* Halt DMA */ - else - { - switch (devc->irq_mode) - { - case IMODE_INPUT: - sb20_audio_start_input(dev, devc->trg_buf, devc->trg_bytes, - devc->trg_intrflag); - break; - - case IMODE_OUTPUT: - sb20_audio_output_block(dev, devc->trg_buf, devc->trg_bytes, - devc->trg_intrflag); - break; - } - } - devc->trigger_bits = bits; -} - -/* - * SB2.01 specific speed setup - */ - -static int sb201_audio_set_speed(int dev, int speed) -{ - sb_devc *devc = audio_devs[dev]->devc; - int tmp; - int s; - - if (speed > 0) - { - if (speed < 4000) - speed = 4000; - if (speed > 44100) - speed = 44100; - if (devc->opened & OPEN_READ && speed > 15000) - speed = 15000; - s = speed * devc->channels; - devc->tconst = (256 - ((1000000 + s / 2) / s)) & 0xff; - tmp = 256 - devc->tconst; - speed = ((1000000 + tmp / 2) / tmp) / devc->channels; - - devc->speed = speed; - } - return devc->speed; -} - -/* - * SB Pro specific routines - */ - -static int sbpro_audio_prepare_for_input(int dev, int bsize, int bcount) -{ /* For SB Pro and Jazz16 */ - sb_devc *devc = audio_devs[dev]->devc; - unsigned long flags; - unsigned char bits = 0; - - if (devc->dma16 >= 0 && devc->dma16 != devc->dma8) - audio_devs[dev]->dmap_out->dma = audio_devs[dev]->dmap_in->dma = - devc->bits == 16 ? devc->dma16 : devc->dma8; - - if (devc->model == MDL_JAZZ || devc->model == MDL_SMW) - if (devc->bits == AFMT_S16_LE) - bits = 0x04; /* 16 bit mode */ - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x40)) - sb_dsp_command(devc, devc->tconst); - sb_dsp_command(devc, DSP_CMD_SPKOFF); - if (devc->channels == 1) - sb_dsp_command(devc, 0xa0 | bits); /* Mono input */ - else - sb_dsp_command(devc, 0xa8 | bits); /* Stereo input */ - spin_unlock_irqrestore(&devc->lock, flags); - - devc->trigger_bits = 0; - return 0; -} - -static int sbpro_audio_prepare_for_output(int dev, int bsize, int bcount) -{ /* For SB Pro and Jazz16 */ - sb_devc *devc = audio_devs[dev]->devc; - unsigned long flags; - unsigned char tmp; - unsigned char bits = 0; - - if (devc->dma16 >= 0 && devc->dma16 != devc->dma8) - audio_devs[dev]->dmap_out->dma = audio_devs[dev]->dmap_in->dma = devc->bits == 16 ? devc->dma16 : devc->dma8; - if (devc->model == MDL_SBPRO) - sb_mixer_set_stereo(devc, devc->channels == 2); - - spin_lock_irqsave(&devc->lock, flags); - if (sb_dsp_command(devc, 0x40)) - sb_dsp_command(devc, devc->tconst); - sb_dsp_command(devc, DSP_CMD_SPKON); - - if (devc->model == MDL_JAZZ || devc->model == MDL_SMW) - { - if (devc->bits == AFMT_S16_LE) - bits = 0x04; /* 16 bit mode */ - - if (devc->channels == 1) - sb_dsp_command(devc, 0xa0 | bits); /* Mono output */ - else - sb_dsp_command(devc, 0xa8 | bits); /* Stereo output */ - spin_unlock_irqrestore(&devc->lock, flags); - } - else - { - spin_unlock_irqrestore(&devc->lock, flags); - tmp = sb_getmixer(devc, 0x0e); - if (devc->channels == 1) - tmp &= ~0x02; - else - tmp |= 0x02; - sb_setmixer(devc, 0x0e, tmp); - } - devc->trigger_bits = 0; - return 0; -} - -static int sbpro_audio_set_speed(int dev, int speed) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (speed > 0) - { - if (speed < 4000) - speed = 4000; - if (speed > 44100) - speed = 44100; - if (devc->channels > 1 && speed > 22050) - speed = 22050; - sb201_audio_set_speed(dev, speed); - } - return devc->speed; -} - -static short sbpro_audio_set_channels(int dev, short channels) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (channels == 1 || channels == 2) - { - if (channels != devc->channels) - { - devc->channels = channels; - if (devc->model == MDL_SBPRO && devc->channels == 2) - sbpro_audio_set_speed(dev, devc->speed); - } - } - return devc->channels; -} - -static int jazz16_audio_set_speed(int dev, int speed) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (speed > 0) - { - int tmp; - int s; - - if (speed < 5000) - speed = 5000; - if (speed > 44100) - speed = 44100; - - s = speed * devc->channels; - - devc->tconst = (256 - ((1000000 + s / 2) / s)) & 0xff; - - tmp = 256 - devc->tconst; - speed = ((1000000 + tmp / 2) / tmp) / devc->channels; - - devc->speed = speed; - } - return devc->speed; -} - -/* - * SB16 specific routines - */ - -static int sb16_audio_set_speed(int dev, int speed) -{ - sb_devc *devc = audio_devs[dev]->devc; - int max_speed = devc->submodel == SUBMDL_ALS100 ? 48000 : 44100; - - if (speed > 0) - { - if (speed < 5000) - speed = 5000; - - if (speed > max_speed) - speed = max_speed; - - devc->speed = speed; - } - return devc->speed; -} - -static unsigned int sb16_audio_set_bits(int dev, unsigned int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (bits != 0) - { - if (bits == AFMT_U8 || bits == AFMT_S16_LE) - devc->bits = bits; - else - devc->bits = AFMT_U8; - } - - return devc->bits; -} - -static int sb16_audio_prepare_for_input(int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (!devc->fullduplex) - { - audio_devs[dev]->dmap_out->dma = - audio_devs[dev]->dmap_in->dma = - devc->bits == AFMT_S16_LE ? - devc->dma16 : devc->dma8; - } - else if (devc->bits == AFMT_S16_LE) - { - audio_devs[dev]->dmap_out->dma = devc->dma8; - audio_devs[dev]->dmap_in->dma = devc->dma16; - } - else - { - audio_devs[dev]->dmap_out->dma = devc->dma16; - audio_devs[dev]->dmap_in->dma = devc->dma8; - } - - devc->trigger_bits = 0; - return 0; -} - -static int sb16_audio_prepare_for_output(int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (!devc->fullduplex) - { - audio_devs[dev]->dmap_out->dma = - audio_devs[dev]->dmap_in->dma = - devc->bits == AFMT_S16_LE ? - devc->dma16 : devc->dma8; - } - else if (devc->bits == AFMT_S16_LE) - { - audio_devs[dev]->dmap_out->dma = devc->dma8; - audio_devs[dev]->dmap_in->dma = devc->dma16; - } - else - { - audio_devs[dev]->dmap_out->dma = devc->dma16; - audio_devs[dev]->dmap_in->dma = devc->dma8; - } - - devc->trigger_bits = 0; - return 0; -} - -static void sb16_audio_output_block(int dev, unsigned long buf, int count, - int intrflag) -{ - unsigned long flags, cnt; - sb_devc *devc = audio_devs[dev]->devc; - unsigned long bits; - - if (!devc->fullduplex || devc->bits == AFMT_S16_LE) - { - devc->irq_mode = IMODE_OUTPUT; - devc->intr_active = 1; - } - else - { - devc->irq_mode_16 = IMODE_OUTPUT; - devc->intr_active_16 = 1; - } - - /* save value */ - spin_lock_irqsave(&devc->lock, flags); - bits = devc->bits; - if (devc->fullduplex) - devc->bits = (devc->bits == AFMT_S16_LE) ? - AFMT_U8 : AFMT_S16_LE; - spin_unlock_irqrestore(&devc->lock, flags); - - cnt = count; - if (devc->bits == AFMT_S16_LE) - cnt >>= 1; - cnt--; - - spin_lock_irqsave(&devc->lock, flags); - - /* DMAbuf_start_dma (dev, buf, count, DMA_MODE_WRITE); */ - - sb_dsp_command(devc, 0x41); - sb_dsp_command(devc, (unsigned char) ((devc->speed >> 8) & 0xff)); - sb_dsp_command(devc, (unsigned char) (devc->speed & 0xff)); - - sb_dsp_command(devc, (devc->bits == AFMT_S16_LE ? 0xb6 : 0xc6)); - sb_dsp_command(devc, ((devc->channels == 2 ? 0x20 : 0) + - (devc->bits == AFMT_S16_LE ? 0x10 : 0))); - sb_dsp_command(devc, (unsigned char) (cnt & 0xff)); - sb_dsp_command(devc, (unsigned char) (cnt >> 8)); - - /* restore real value after all programming */ - devc->bits = bits; - spin_unlock_irqrestore(&devc->lock, flags); -} - - -/* - * This fails on the Cyrix MediaGX. If you don't have the DMA enabled - * before the first sample arrives it locks up. However even if you - * do enable the DMA in time you just get DMA timeouts and missing - * interrupts and stuff, so for now I've not bothered fixing this either. - */ - -static void sb16_audio_start_input(int dev, unsigned long buf, int count, int intrflag) -{ - unsigned long flags, cnt; - sb_devc *devc = audio_devs[dev]->devc; - - if (!devc->fullduplex || devc->bits != AFMT_S16_LE) - { - devc->irq_mode = IMODE_INPUT; - devc->intr_active = 1; - } - else - { - devc->irq_mode_16 = IMODE_INPUT; - devc->intr_active_16 = 1; - } - - cnt = count; - if (devc->bits == AFMT_S16_LE) - cnt >>= 1; - cnt--; - - spin_lock_irqsave(&devc->lock, flags); - - /* DMAbuf_start_dma (dev, buf, count, DMA_MODE_READ); */ - - sb_dsp_command(devc, 0x42); - sb_dsp_command(devc, (unsigned char) ((devc->speed >> 8) & 0xff)); - sb_dsp_command(devc, (unsigned char) (devc->speed & 0xff)); - - sb_dsp_command(devc, (devc->bits == AFMT_S16_LE ? 0xbe : 0xce)); - sb_dsp_command(devc, ((devc->channels == 2 ? 0x20 : 0) + - (devc->bits == AFMT_S16_LE ? 0x10 : 0))); - sb_dsp_command(devc, (unsigned char) (cnt & 0xff)); - sb_dsp_command(devc, (unsigned char) (cnt >> 8)); - - spin_unlock_irqrestore(&devc->lock, flags); -} - -static void sb16_audio_trigger(int dev, int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - - int bits_16 = bits & devc->irq_mode_16; - bits &= devc->irq_mode; - - if (!bits && !bits_16) - sb_dsp_command(devc, 0xd0); /* Halt DMA */ - else - { - if (bits) - { - switch (devc->irq_mode) - { - case IMODE_INPUT: - sb16_audio_start_input(dev, - devc->trg_buf, - devc->trg_bytes, - devc->trg_intrflag); - break; - - case IMODE_OUTPUT: - sb16_audio_output_block(dev, - devc->trg_buf, - devc->trg_bytes, - devc->trg_intrflag); - break; - } - } - if (bits_16) - { - switch (devc->irq_mode_16) - { - case IMODE_INPUT: - sb16_audio_start_input(dev, - devc->trg_buf_16, - devc->trg_bytes_16, - devc->trg_intrflag_16); - break; - - case IMODE_OUTPUT: - sb16_audio_output_block(dev, - devc->trg_buf_16, - devc->trg_bytes_16, - devc->trg_intrflag_16); - break; - } - } - } - - devc->trigger_bits = bits | bits_16; -} - -static unsigned char lbuf8[2048]; -static signed short *lbuf16 = (signed short *)lbuf8; -#define LBUFCOPYSIZE 1024 -static void -sb16_copy_from_user(int dev, - char *localbuf, int localoffs, - const char __user *userbuf, int useroffs, - int max_in, int max_out, - int *used, int *returned, - int len) -{ - sb_devc *devc = audio_devs[dev]->devc; - int i, c, p, locallen; - unsigned char *buf8; - signed short *buf16; - - /* if not duplex no conversion */ - if (!devc->fullduplex) - { - if (copy_from_user(localbuf + localoffs, - userbuf + useroffs, len)) - return; - *used = len; - *returned = len; - } - else if (devc->bits == AFMT_S16_LE) - { - /* 16 -> 8 */ - /* max_in >> 1, max number of samples in ( 16 bits ) */ - /* max_out, max number of samples out ( 8 bits ) */ - /* len, number of samples that will be taken ( 16 bits )*/ - /* c, count of samples remaining in buffer ( 16 bits )*/ - /* p, count of samples already processed ( 16 bits )*/ - len = ( (max_in >> 1) > max_out) ? max_out : (max_in >> 1); - c = len; - p = 0; - buf8 = (unsigned char *)(localbuf + localoffs); - while (c) - { - locallen = (c >= LBUFCOPYSIZE ? LBUFCOPYSIZE : c); - /* << 1 in order to get 16 bit samples */ - if (copy_from_user(lbuf16, - userbuf + useroffs + (p << 1), - locallen << 1)) - return; - for (i = 0; i < locallen; i++) - { - buf8[p+i] = ~((lbuf16[i] >> 8) & 0xff) ^ 0x80; - } - c -= locallen; p += locallen; - } - /* used = ( samples * 16 bits size ) */ - *used = max_in > ( max_out << 1) ? (max_out << 1) : max_in; - /* returned = ( samples * 8 bits size ) */ - *returned = len; - } - else - { - /* 8 -> 16 */ - /* max_in, max number of samples in ( 8 bits ) */ - /* max_out >> 1, max number of samples out ( 16 bits ) */ - /* len, number of samples that will be taken ( 8 bits )*/ - /* c, count of samples remaining in buffer ( 8 bits )*/ - /* p, count of samples already processed ( 8 bits )*/ - len = max_in > (max_out >> 1) ? (max_out >> 1) : max_in; - c = len; - p = 0; - buf16 = (signed short *)(localbuf + localoffs); - while (c) - { - locallen = (c >= LBUFCOPYSIZE ? LBUFCOPYSIZE : c); - if (copy_from_user(lbuf8, - userbuf+useroffs + p, - locallen)) - return; - for (i = 0; i < locallen; i++) - { - buf16[p+i] = (~lbuf8[i] ^ 0x80) << 8; - } - c -= locallen; p += locallen; - } - /* used = ( samples * 8 bits size ) */ - *used = len; - /* returned = ( samples * 16 bits size ) */ - *returned = len << 1; - } -} - -static void -sb16_audio_mmap(int dev) -{ - sb_devc *devc = audio_devs[dev]->devc; - devc->fullduplex = 0; -} - -static struct audio_driver sb1_audio_driver = /* SB1.x */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = sb_set_output_parms, - .start_input = sb_set_input_parms, - .prepare_for_input = sb1_audio_prepare_for_input, - .prepare_for_output = sb1_audio_prepare_for_output, - .halt_io = sb1_audio_halt_xfer, - .trigger = sb1_audio_trigger, - .set_speed = sb1_audio_set_speed, - .set_bits = sb1_audio_set_bits, - .set_channels = sb1_audio_set_channels -}; - -static struct audio_driver sb20_audio_driver = /* SB2.0 */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = sb_set_output_parms, - .start_input = sb_set_input_parms, - .prepare_for_input = sb1_audio_prepare_for_input, - .prepare_for_output = sb1_audio_prepare_for_output, - .halt_io = sb1_audio_halt_xfer, - .trigger = sb20_audio_trigger, - .set_speed = sb1_audio_set_speed, - .set_bits = sb1_audio_set_bits, - .set_channels = sb1_audio_set_channels -}; - -static struct audio_driver sb201_audio_driver = /* SB2.01 */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = sb_set_output_parms, - .start_input = sb_set_input_parms, - .prepare_for_input = sb1_audio_prepare_for_input, - .prepare_for_output = sb1_audio_prepare_for_output, - .halt_io = sb1_audio_halt_xfer, - .trigger = sb20_audio_trigger, - .set_speed = sb201_audio_set_speed, - .set_bits = sb1_audio_set_bits, - .set_channels = sb1_audio_set_channels -}; - -static struct audio_driver sbpro_audio_driver = /* SB Pro */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = sb_set_output_parms, - .start_input = sb_set_input_parms, - .prepare_for_input = sbpro_audio_prepare_for_input, - .prepare_for_output = sbpro_audio_prepare_for_output, - .halt_io = sb1_audio_halt_xfer, - .trigger = sb20_audio_trigger, - .set_speed = sbpro_audio_set_speed, - .set_bits = sb1_audio_set_bits, - .set_channels = sbpro_audio_set_channels -}; - -static struct audio_driver jazz16_audio_driver = /* Jazz16 and SM Wave */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = sb_set_output_parms, - .start_input = sb_set_input_parms, - .prepare_for_input = sbpro_audio_prepare_for_input, - .prepare_for_output = sbpro_audio_prepare_for_output, - .halt_io = sb1_audio_halt_xfer, - .trigger = sb20_audio_trigger, - .set_speed = jazz16_audio_set_speed, - .set_bits = sb16_audio_set_bits, - .set_channels = sbpro_audio_set_channels -}; - -static struct audio_driver sb16_audio_driver = /* SB16 */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = sb_set_output_parms, - .start_input = sb_set_input_parms, - .prepare_for_input = sb16_audio_prepare_for_input, - .prepare_for_output = sb16_audio_prepare_for_output, - .halt_io = sb1_audio_halt_xfer, - .copy_user = sb16_copy_from_user, - .trigger = sb16_audio_trigger, - .set_speed = sb16_audio_set_speed, - .set_bits = sb16_audio_set_bits, - .set_channels = sbpro_audio_set_channels, - .mmap = sb16_audio_mmap -}; - -void sb_audio_init(sb_devc * devc, char *name, struct module *owner) -{ - int audio_flags = 0; - int format_mask = AFMT_U8; - - struct audio_driver *driver = &sb1_audio_driver; - - switch (devc->model) - { - case MDL_SB1: /* SB1.0 or SB 1.5 */ - DDB(printk("Will use standard SB1.x driver\n")); - audio_flags = DMA_HARDSTOP; - break; - - case MDL_SB2: - DDB(printk("Will use SB2.0 driver\n")); - audio_flags = DMA_AUTOMODE; - driver = &sb20_audio_driver; - break; - - case MDL_SB201: - DDB(printk("Will use SB2.01 (high speed) driver\n")); - audio_flags = DMA_AUTOMODE; - driver = &sb201_audio_driver; - break; - - case MDL_JAZZ: - case MDL_SMW: - DDB(printk("Will use Jazz16 driver\n")); - audio_flags = DMA_AUTOMODE; - format_mask |= AFMT_S16_LE; - driver = &jazz16_audio_driver; - break; - - case MDL_ESS: - DDB(printk("Will use ESS ES688/1688 driver\n")); - driver = ess_audio_init (devc, &audio_flags, &format_mask); - break; - - case MDL_SB16: - DDB(printk("Will use SB16 driver\n")); - audio_flags = DMA_AUTOMODE; - format_mask |= AFMT_S16_LE; - if (devc->dma8 != devc->dma16 && devc->dma16 != -1) - { - audio_flags |= DMA_DUPLEX; - devc->duplex = 1; - } - driver = &sb16_audio_driver; - break; - - default: - DDB(printk("Will use SB Pro driver\n")); - audio_flags = DMA_AUTOMODE; - driver = &sbpro_audio_driver; - } - - if (owner) - driver->owner = owner; - - if ((devc->dev = sound_install_audiodrv(AUDIO_DRIVER_VERSION, - name,driver, sizeof(struct audio_driver), - audio_flags, format_mask, devc, - devc->dma8, - devc->duplex ? devc->dma16 : devc->dma8)) < 0) - { - printk(KERN_ERR "Sound Blaster: unable to install audio.\n"); - return; - } - audio_devs[devc->dev]->mixer_dev = devc->my_mixerdev; - audio_devs[devc->dev]->min_fragment = 5; -} |