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|
/*****************************************************************************/
/*
* sbc.c -- Linux soundcard HF FSK driver,
* Soundblaster specific functions.
*
* Copyright (C) 1997 Thomas Sailer (sailer@ife.ee.ethz.ch)
* Swiss Federal Institute of Technology (ETH), Electronics Lab
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
/*****************************************************************************/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/hfmodem.h>
#include <asm/io.h>
#include <asm/dma.h>
/* --------------------------------------------------------------------- */
/*
* the sbc converter's registers
*/
#define DSP_RESET(iobase) (iobase+0x6)
#define DSP_READ_DATA(iobase) (iobase+0xa)
#define DSP_WRITE_DATA(iobase) (iobase+0xc)
#define DSP_WRITE_STATUS(iobase) (iobase+0xc)
#define DSP_DATA_AVAIL(iobase) (iobase+0xe)
#define DSP_MIXER_ADDR(iobase) (iobase+0x4)
#define DSP_MIXER_DATA(iobase) (iobase+0x5)
#define DSP_INTACK_16BIT(iobase) (iobase+0xf)
#define SBC_EXTENT 16
/* --------------------------------------------------------------------- */
/*
* SBC commands
*/
#define SBC_OUTPUT 0x14
#define SBC_INPUT 0x24
#define SBC_BLOCKSIZE 0x48
#define SBC_HI_OUTPUT 0x91
#define SBC_HI_INPUT 0x99
#define SBC_LO_OUTPUT_AUTOINIT 0x1c
#define SBC_LO_INPUT_AUTOINIT 0x2c
#define SBC_HI_OUTPUT_AUTOINIT 0x90
#define SBC_HI_INPUT_AUTOINIT 0x98
#define SBC_IMMED_INT 0xf2
#define SBC_GET_REVISION 0xe1
#define ESS_GET_REVISION 0xe7
#define ESS_EXTENDED_MODE 0xc6
#define SBC_SPEAKER_ON 0xd1
#define SBC_SPEAKER_OFF 0xd3
#define SBC_DMA_ON 0xd0
#define SBC_DMA_OFF 0xd4
#define SBC_SAMPLE_RATE 0x40
#define SBC_SAMPLE_RATE_OUT 0x41
#define SBC_SAMPLE_RATE_IN 0x42
#define SBC_MONO_8BIT 0xa0
#define SBC_MONO_16BIT 0xa4
#define SBC_STEREO_8BIT 0xa8
#define SBC_STEREO_16BIT 0xac
#define SBC4_OUT8_AI 0xc6
#define SBC4_IN8_AI 0xce
#define SBC4_MODE_UNS_MONO 0x00
#define SBC4_MODE_SIGN_MONO 0x10
#define SBC4_OUT16_AI 0xb6
#define SBC4_IN16_AI 0xbe
#define SBC4_OUT16_AI_NO_FIFO 0xb4
#define SBC4_IN16_AI_NO_FIFO 0xbc
/* --------------------------------------------------------------------- */
extern const struct hfmodem_scops sbc4_scops;
extern const struct hfmodem_scops ess_scops;
/* --------------------------------------------------------------------- */
static int reset_dsp(struct hfmodem_state *dev)
{
int i;
outb(1, DSP_RESET(dev->io.base_addr));
udelay(3);
outb(0, DSP_RESET(dev->io.base_addr));
for (i = 0; i < 0xffff; i++)
if (inb(DSP_DATA_AVAIL(dev->io.base_addr)) & 0x80)
if (inb(DSP_READ_DATA(dev->io.base_addr)) == 0xaa)
return 1;
return 0;
}
/* --------------------------------------------------------------------- */
static void write_dsp(struct hfmodem_state *dev, unsigned char data)
{
int i;
for (i = 0; i < 0xffff; i++)
if (!(inb(DSP_WRITE_STATUS(dev->io.base_addr)) & 0x80)) {
outb(data, DSP_WRITE_DATA(dev->io.base_addr));
return;
}
}
/* --------------------------------------------------------------------- */
static int read_dsp(struct hfmodem_state *dev, unsigned char *data)
{
int i;
if (!data)
return 0;
for (i = 0; i < 0xffff; i++)
if (inb(DSP_DATA_AVAIL(dev->io.base_addr)) & 0x80) {
*data = inb(DSP_READ_DATA(dev->io.base_addr));
return 1;
}
return 0;
}
/* --------------------------------------------------------------------- */
static void write_ess(struct hfmodem_state *dev, unsigned char reg, unsigned char data)
{
write_dsp(dev, reg);
write_dsp(dev, data);
}
/* --------------------------------------------------------------------- */
static int read_ess(struct hfmodem_state *dev, unsigned char reg, unsigned char *data)
{
write_dsp(dev, 0xc0);
write_dsp(dev, reg);
return read_dsp(dev, data);
}
/* --------------------------------------------------------------------- */
static int reset_ess(struct hfmodem_state *dev)
{
int i;
outb(3, DSP_RESET(dev->io.base_addr)); /* reset FIFOs too */
udelay(3);
outb(0, DSP_RESET(dev->io.base_addr));
for (i = 0; i < 0xffff; i++)
if (inb(DSP_DATA_AVAIL(dev->io.base_addr)) & 0x80)
if (inb(DSP_READ_DATA(dev->io.base_addr)) == 0xaa) {
write_dsp(dev, ESS_EXTENDED_MODE);
return 1;
}
return 0;
}
/* --------------------------------------------------------------------- */
static int config_resources(struct hfmodem_state *dev)
{
unsigned char irqreg = 0, dmareg = 0, realirq, realdma;
unsigned long flags;
switch (dev->io.irq) {
case 2:
case 9:
irqreg |= 0x01;
break;
case 5:
irqreg |= 0x02;
break;
case 7:
irqreg |= 0x04;
break;
case 10:
irqreg |= 0x08;
break;
default:
return -ENODEV;
}
switch (dev->io.dma) {
case 0:
dmareg |= 0x01;
break;
case 1:
dmareg |= 0x02;
break;
case 3:
dmareg |= 0x08;
break;
case 5:
dmareg |= 0x20;
break;
case 6:
dmareg |= 0x40;
break;
case 7:
dmareg |= 0x80;
break;
default:
return -ENODEV;
}
save_flags(flags);
cli();
outb(0x80, DSP_MIXER_ADDR(dev->io.base_addr));
outb(irqreg, DSP_MIXER_DATA(dev->io.base_addr));
realirq = inb(DSP_MIXER_DATA(dev->io.base_addr));
outb(0x81, DSP_MIXER_ADDR(dev->io.base_addr));
outb(dmareg, DSP_MIXER_DATA(dev->io.base_addr));
realdma = inb(DSP_MIXER_DATA(dev->io.base_addr));
restore_flags(flags);
if ((~realirq) & irqreg || (~realdma) & dmareg) {
printk(KERN_ERR "%s: sbc resource registers cannot be set; PnP device "
"and IRQ/DMA specified wrongly?\n", hfmodem_drvname);
return -EINVAL;
}
return 0;
}
/* --------------------------------------------------------------------- */
extern __inline__ void sbc_int_ack_8bit(struct hfmodem_state *dev)
{
inb(DSP_DATA_AVAIL(dev->io.base_addr));
}
/* --------------------------------------------------------------------- */
extern __inline__ void sbc_int_ack_16bit(struct hfmodem_state *dev)
{
inb(DSP_INTACK_16BIT(dev->io.base_addr));
}
/* --------------------------------------------------------------------- */
static void set_mixer(struct hfmodem_state *dev, unsigned char reg, unsigned char data)
{
outb(reg, DSP_MIXER_ADDR(dev->io.base_addr));
outb(data, DSP_MIXER_DATA(dev->io.base_addr));
}
/* --------------------------------------------------------------------- */
int hfmodem_sbcprobe(struct hfmodem_state *dev)
{
unsigned char revhi, revlo, essrevhi, essrevlo, tmp;
int ret;
if (dev->io.base_addr <= 0 || dev->io.base_addr > 0x1000-SBC_EXTENT ||
dev->io.irq < 2 || dev->io.irq > 15 || dev->io.dma > 7 || dev->io.dma == 2)
return -ENXIO;
if (check_region(dev->io.base_addr, SBC_EXTENT))
return -EACCES;
/*
* check if a card is available
*/
if (!reset_dsp(dev)) {
printk(KERN_ERR "%s: sbc: no card at io address 0x%x\n",
hfmodem_drvname, dev->io.base_addr);
return -ENODEV;
}
set_mixer(dev, 0, 0); /* reset mixer */
write_dsp(dev, SBC_GET_REVISION);
if (!read_dsp(dev, &revhi) || !read_dsp(dev, &revlo))
return -ENODEV;
printk(KERN_INFO "%s: SoundBlaster DSP revision %d.%02d\n", hfmodem_drvname, revhi, revlo);
if (revhi == 3 && revlo == 1) {
write_dsp(dev, ESS_GET_REVISION);
if (!read_dsp(dev, &essrevhi) || !read_dsp(dev, &essrevlo))
return -ENODEV;
if (essrevhi == 0x48 && (essrevlo & 0xf0) == 0x80) {
printk(KERN_INFO "%s: ESS ES488 AudioDrive (rev %d): unsupported.\n",
hfmodem_drvname, essrevlo & 0x0f);
return -ENODEV;
}
if (essrevhi == 0x68 && (essrevlo & 0xf0) == 0x80) {
printk(KERN_INFO "%s: ESS ES%s688 AudioDrive (rev %d)\n",
hfmodem_drvname, ((essrevlo & 0x0f) >= 8) ? "1" : "", essrevlo & 0x0f);
if (dev->io.dma > 3) {
printk(KERN_INFO "%s: DMA number out of range\n", hfmodem_drvname);
return -ENXIO;
}
printk(KERN_INFO "%s: ess: irq: ", hfmodem_drvname);
read_ess(dev, 0xb1, &tmp);
switch (tmp & 0xf) {
case 0:
printk("2, 9, \"all others\"");
break;
case 5:
printk("5");
break;
case 10:
printk("7");
break;
case 15:
printk("10");
break;
default:
printk("unknown (%d)", tmp & 0xf);
break;
}
printk(" dma: ");
read_ess(dev, 0xb2, &tmp);
switch (tmp & 0xf) {
case 0:
printk("\"all others\"");
break;
case 5:
printk("0");
break;
case 10:
printk("1");
break;
case 15:
printk("3");
break;
default:
printk("unknown (%d)", tmp & 0xf);
break;
}
printk("\n");
dev->scops = &ess_scops;
return 0;
}
}
if (revhi < 4) {
printk(KERN_INFO "%s: at least SB16 required\n", hfmodem_drvname);
return -ENODEV;
}
if (dev->io.dma < 4) {
printk(KERN_INFO "%s: DMA number out of range\n", hfmodem_drvname);
return -ENXIO;
}
if ((ret = config_resources(dev)))
return ret;
dev->scops = &sbc4_scops;
return 0;
}
/* --------------------------------------------------------------------- */
static void sbc4_init(struct hfmodem_state *dev)
{
}
/* --------------------------------------------------------------------- */
static void sbc4_prepare_input(struct hfmodem_state *dev)
{
unsigned long flags;
if (!reset_dsp(dev)) {
printk(KERN_ERR "%s: sbc: cannot reset sb dsp\n", hfmodem_drvname);
return;
}
save_flags(flags);
cli();
disable_dma(dev->io.dma);
clear_dma_ff(dev->io.dma);
set_dma_mode(dev->io.dma, DMA_MODE_READ | DMA_MODE_AUTOINIT);
set_dma_addr(dev->io.dma, virt_to_bus(dev->dma.buf));
set_dma_count(dev->io.dma, HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE);
enable_dma(dev->io.dma);
sbc_int_ack_16bit(dev);
write_dsp(dev, SBC_SAMPLE_RATE_IN); /* set sampling rate */
write_dsp(dev, HFMODEM_SRATE >> 8);
write_dsp(dev, HFMODEM_SRATE & 0xff);
write_dsp(dev, SBC_SPEAKER_OFF);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static void sbc4_trigger_input(struct hfmodem_state *dev)
{
unsigned long flags;
save_flags(flags);
cli();
write_dsp(dev, SBC4_IN16_AI_NO_FIFO);
write_dsp(dev, SBC4_MODE_UNS_MONO);
write_dsp(dev, (HFMODEM_FRAGSAMPLES-1) & 0xff);
write_dsp(dev, (HFMODEM_FRAGSAMPLES-1) >> 8);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static void sbc4_prepare_output(struct hfmodem_state *dev)
{
unsigned long flags;
if (!reset_dsp(dev)) {
printk(KERN_ERR "%s: sbc: cannot reset sb dsp\n", hfmodem_drvname);
return;
}
save_flags(flags);
cli();
disable_dma(dev->io.dma);
clear_dma_ff(dev->io.dma);
set_dma_mode(dev->io.dma, DMA_MODE_WRITE | DMA_MODE_AUTOINIT);
set_dma_addr(dev->io.dma, virt_to_bus(dev->dma.buf));
set_dma_count(dev->io.dma, HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE);
enable_dma(dev->io.dma);
sbc_int_ack_16bit(dev);
write_dsp(dev, SBC_SAMPLE_RATE_OUT); /* set sampling rate */
write_dsp(dev, HFMODEM_SRATE >> 8);
write_dsp(dev, HFMODEM_SRATE & 0xff);
write_dsp(dev, SBC_SPEAKER_ON);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static void sbc4_trigger_output(struct hfmodem_state *dev)
{
unsigned long flags;
save_flags(flags);
cli();
write_dsp(dev, SBC4_OUT16_AI_NO_FIFO);
write_dsp(dev, SBC4_MODE_UNS_MONO);
write_dsp(dev, (HFMODEM_FRAGSAMPLES-1) & 0xff);
write_dsp(dev, (HFMODEM_FRAGSAMPLES-1) >> 8);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static void sbc4_stop(struct hfmodem_state *dev)
{
reset_dsp(dev);
}
/* --------------------------------------------------------------------- */
static unsigned int sbc4_intack(struct hfmodem_state *dev)
{
unsigned int dmaptr;
unsigned long flags;
unsigned char intsrc;
save_flags(flags);
cli();
outb(0x82, DSP_MIXER_ADDR(dev->io.base_addr));
intsrc = inb(DSP_MIXER_DATA(dev->io.base_addr));
if (intsrc & 0x01)
sbc_int_ack_8bit(dev);
if (intsrc & 0x02)
sbc_int_ack_16bit(dev);
disable_dma(dev->io.dma);
clear_dma_ff(dev->io.dma);
dmaptr = get_dma_residue(dev->io.dma);
enable_dma(dev->io.dma);
restore_flags(flags);
if (dmaptr == 0 || dmaptr > HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE)
dmaptr = HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE;
return (HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE - dmaptr) / 2;
}
/* --------------------------------------------------------------------- */
static void sbc4_mixer(struct hfmodem_state *dev, int src, int igain, int ogain)
{
unsigned long flags;
static const unsigned char srcbits[3] = { 0x18, 0x01, 0x06 };
save_flags(flags);
cli();
if (src >= 0 && src <= 2) {
set_mixer(dev, 0x3d, srcbits[src]);
set_mixer(dev, 0x3e, srcbits[src]);
}
if (ogain >= 0 && ogain <= 255) {
set_mixer(dev, 0x30, ogain);
set_mixer(dev, 0x31, ogain);
}
if (igain >= 0 && igain <= 255) {
set_mixer(dev, 0x36, igain);
set_mixer(dev, 0x37, igain);
set_mixer(dev, 0x38, igain);
set_mixer(dev, 0x39, igain);
set_mixer(dev, 0x3a, igain);
}
set_mixer(dev, 0x32, 0xff);
set_mixer(dev, 0x33, 0xff);
set_mixer(dev, 0x34, 0);
set_mixer(dev, 0x35, 0);
set_mixer(dev, 0x3b, 0); /* pc spkr vol */
set_mixer(dev, 0x3c, 0); /* output src */
set_mixer(dev, 0x3f, 0); /* inp gain */
set_mixer(dev, 0x40, 0);
set_mixer(dev, 0x41, 0); /* outp gain */
set_mixer(dev, 0x42, 0);
set_mixer(dev, 0x43, 1); /* mic agc off */
set_mixer(dev, 0x44, 8<<4); /* treble */
set_mixer(dev, 0x45, 8<<4);
set_mixer(dev, 0x46, 8<<4); /* bass */
set_mixer(dev, 0x47, 8<<4);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static void ess_prepare_input(struct hfmodem_state *dev)
{
unsigned long flags;
unsigned char tmp;
if (!reset_ess(dev)) {
printk(KERN_ERR "%s: sbc: cannot reset ess dsp\n", hfmodem_drvname);
return;
}
save_flags(flags);
cli();
disable_dma(dev->io.dma);
clear_dma_ff(dev->io.dma);
set_dma_mode(dev->io.dma, DMA_MODE_READ | DMA_MODE_AUTOINIT);
set_dma_addr(dev->io.dma, virt_to_bus(dev->dma.buf));
set_dma_count(dev->io.dma, HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE);
enable_dma(dev->io.dma);
sbc_int_ack_8bit(dev);
write_ess(dev, 0xa1, 128 - (397700 + HFMODEM_SRATE/2) / HFMODEM_SRATE);
/*
* Set filter divider register
* Rolloff at 90% of the half sampling rate
*/
write_ess(dev, 0xa2, 256-(7160000 / (82 * (HFMODEM_SRATE * 9 / 20))));
write_dsp(dev, SBC_SPEAKER_OFF);
write_ess(dev, 0xb8, 0x0e); /* Auto init DMA mode */
read_ess(dev, 0xa8, &tmp);
write_ess(dev, 0xa8, (tmp & ~0x03) | 2); /* Mono */
write_ess(dev, 0xb9, 2); /* Demand mode (4 bytes/DMA request) */
/* 16 bit mono */
write_ess(dev, 0xb7, 0x71);
write_ess(dev, 0xb7, 0xf4);
read_ess(dev, 0xb1, &tmp);
write_ess(dev, 0xb1, (tmp & 0x0f) | 0x50);
read_ess(dev, 0xb2, &tmp);
write_ess(dev, 0xb2, (tmp & 0x0f) | 0x50);
write_ess(dev, 0xa4, (unsigned char) ((-HFMODEM_FRAGSIZE) & 0xff));
write_ess(dev, 0xa5, (unsigned char) (((-HFMODEM_FRAGSIZE) >> 8) & 0xff));
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static void ess_trigger_input(struct hfmodem_state *dev)
{
unsigned long flags;
unsigned char tmp;
save_flags(flags);
cli();
read_ess(dev, 0xb8, &tmp);
write_ess(dev, 0xb8, tmp | 0x0f); /* Go */
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
void ess_prepare_output(struct hfmodem_state *dev)
{
unsigned long flags;
unsigned char tmp;
if (!reset_ess(dev)) {
printk(KERN_ERR "%s: sbc: cannot reset ess dsp\n", hfmodem_drvname);
return;
}
save_flags(flags);
cli();
disable_dma(dev->io.dma);
clear_dma_ff(dev->io.dma);
set_dma_mode(dev->io.dma, DMA_MODE_WRITE | DMA_MODE_AUTOINIT);
set_dma_addr(dev->io.dma, virt_to_bus(dev->dma.buf));
set_dma_count(dev->io.dma, HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE);
enable_dma(dev->io.dma);
sbc_int_ack_8bit(dev);
write_ess(dev, 0xa1, 128 - (397700 + HFMODEM_SRATE/2) / HFMODEM_SRATE);
/*
* Set filter divider register
* Rolloff at 90% of the half sampling rate
*/
write_ess(dev, 0xa2, 256-(7160000 / (82 * (HFMODEM_SRATE * 9 / 20))));
write_ess(dev, 0xb8, 0x04); /* Auto init DMA mode */
read_ess(dev, 0xa8, &tmp);
write_ess(dev, 0xa8, (tmp & ~0x03) | 2); /* Mono */
write_ess(dev, 0xb9, 2); /* Demand mode (4 bytes/DMA request) */
/* 16 bit mono */
write_ess(dev, 0xb6, 0x00);
write_ess(dev, 0xb7, 0x71);
write_ess(dev, 0xb7, 0xf4);
read_ess(dev, 0xb1, &tmp);
write_ess(dev, 0xb1, (tmp & 0x0f) | 0x50);
read_ess(dev, 0xb2, &tmp);
write_ess(dev, 0xb2, (tmp & 0x0f) | 0x50);
write_ess(dev, 0xa4, (unsigned char) ((-HFMODEM_FRAGSIZE) & 0xff));
write_ess(dev, 0xa5, (unsigned char) (((-HFMODEM_FRAGSIZE) >> 8) & 0xff));
write_dsp(dev, SBC_SPEAKER_ON);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
void ess_trigger_output(struct hfmodem_state *dev)
{
unsigned long flags;
unsigned char tmp;
save_flags(flags);
cli();
read_ess(dev, 0xb8, &tmp);
write_ess(dev, 0xb8, tmp | 0x05); /* Go */
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
unsigned int ess_intack(struct hfmodem_state *dev)
{
unsigned int dmaptr;
unsigned long flags;
unsigned char st;
#if 0
static unsigned int cnt = 0;
#endif
save_flags(flags);
cli();
st = inb(DSP_WRITE_STATUS(dev->io.base_addr));
sbc_int_ack_8bit(dev);
disable_dma(dev->io.dma);
clear_dma_ff(dev->io.dma);
dmaptr = get_dma_residue(dev->io.dma);
enable_dma(dev->io.dma);
restore_flags(flags);
#if 0
cnt = (cnt + 1) & 0x3f;
if (!cnt)
printk(KERN_DEBUG "%s: ess: FIFO: full:%c empty:%c half empty:%c IRQ: cpu:%c half empty:%c DMA:%c\n",
hfmodem_drvname, '1'-!(st&0x20), '1'-!(st&0x10), '1'-!(st&0x8),
'1'-!(st&0x4), '1'-!(st&0x2), '1'-!(st&0x1));
#endif
if (st & 0x20) /* FIFO full, 256 bytes */
dmaptr += 256;
else if (!(st & 0x10)) /* FIFO not empty, assume half full 128 bytes */
dmaptr += 128;
if (dmaptr > HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE)
dmaptr -= HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE;
if (dmaptr == 0 || dmaptr > HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE)
dmaptr = HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE;
return (HFMODEM_NUMFRAGS * HFMODEM_FRAGSIZE - dmaptr) / 2;
}
/* --------------------------------------------------------------------- */
static void ess_mixer(struct hfmodem_state *dev, int src, int igain, int ogain)
{
unsigned long flags;
save_flags(flags);
cli();
if (src >= 0 && src <= 2)
set_mixer(dev, 0x0c, ((src+3) & 3) << 1);
if (ogain >= 0 && ogain <= 255)
set_mixer(dev, 0x22, (ogain & 0xf0) | ((ogain >> 4) & 0xf));
if (igain >= 0 && igain <= 255) {
set_mixer(dev, 0x36, igain);
set_mixer(dev, 0x37, igain);
set_mixer(dev, 0x38, igain);
set_mixer(dev, 0x39, igain);
set_mixer(dev, 0x3a, igain);
}
set_mixer(dev, 0x4, 0xff);
set_mixer(dev, 0xe, 0x0);
set_mixer(dev, 0x26, 0);
set_mixer(dev, 0x28, 0);
set_mixer(dev, 0x2e, 0);
restore_flags(flags);
}
/* --------------------------------------------------------------------- */
static const struct hfmodem_scops sbc4_scops = {
SBC_EXTENT, sbc4_init, sbc4_prepare_input, sbc4_trigger_input,
sbc4_prepare_output, sbc4_trigger_output, sbc4_stop, sbc4_intack, sbc4_mixer
};
static const struct hfmodem_scops ess_scops = {
SBC_EXTENT, sbc4_init, ess_prepare_input, ess_trigger_input,
ess_prepare_output, ess_trigger_output, sbc4_stop, ess_intack, ess_mixer
};
/* --------------------------------------------------------------------- */
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