+++ /dev/null
-/*
- * 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;
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff