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freebsd-nq/sys/dev/sound/isa/sb.c
Cameron Grant 57376530f0 split up ess and sb code 
rewrite ess mixer to use native registers
rewrite play/rec code to use more accurate timer when available
add code to use audio2 for playback, but disable it as no irqs are generated
2000-03-28 18:31:01 +00:00

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/*
* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
* Copyright 1997,1998 Luigi Rizzo.
*
* Derived from files in the Voxware 3.5 distribution,
* Copyright by Hannu Savolainen 1994, under the same copyright
* conditions.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <dev/sound/pcm/sound.h>
#include "sbc.h"
#define __SB_MIXER_C__ /* XXX warning... */
#include <dev/sound/isa/sb.h>
#include <dev/sound/chip.h>
#define PLAIN_SB16(x) ((((x)->bd_flags) & (BD_F_SB16|BD_F_SB16X)) == BD_F_SB16)
/* channel interface */
static void *sbchan_init(void *devinfo, snd_dbuf *b, pcm_channel *c, int dir);
static int sbchan_setdir(void *data, int dir);
static int sbchan_setformat(void *data, u_int32_t format);
static int sbchan_setspeed(void *data, u_int32_t speed);
static int sbchan_setblocksize(void *data, u_int32_t blocksize);
static int sbchan_trigger(void *data, int go);
static int sbchan_getptr(void *data);
static pcmchan_caps *sbchan_getcaps(void *data);
static pcmchan_caps sb_playcaps = {
4000, 22050,
AFMT_U8,
AFMT_U8
};
static pcmchan_caps sb_reccaps = {
4000, 13000,
AFMT_U8,
AFMT_U8
};
static pcmchan_caps sbpro_playcaps = {
4000, 45000,
AFMT_STEREO | AFMT_U8,
AFMT_STEREO | AFMT_U8
};
static pcmchan_caps sbpro_reccaps = {
4000, 15000,
AFMT_STEREO | AFMT_U8,
AFMT_STEREO | AFMT_U8
};
static pcmchan_caps sb16_hcaps = {
5000, 45000,
AFMT_STEREO | AFMT_S16_LE,
AFMT_STEREO | AFMT_S16_LE
};
static pcmchan_caps sb16_lcaps = {
5000, 45000,
AFMT_STEREO | AFMT_U8,
AFMT_STEREO | AFMT_U8
};
static pcmchan_caps sb16x_caps = {
5000, 49000,
AFMT_STEREO | AFMT_U8 | AFMT_S16_LE,
AFMT_STEREO | AFMT_S16_LE
};
static pcm_channel sb_chantemplate = {
sbchan_init,
sbchan_setdir,
sbchan_setformat,
sbchan_setspeed,
sbchan_setblocksize,
sbchan_trigger,
sbchan_getptr,
sbchan_getcaps,
};
struct sb_info;
struct sb_chinfo {
struct sb_info *parent;
pcm_channel *channel;
snd_dbuf *buffer;
int dir;
u_int32_t fmt, spd;
};
struct sb_info {
struct resource *io_base; /* I/O address for the board */
struct resource *irq;
struct resource *drq1;
struct resource *drq2;
bus_dma_tag_t parent_dmat;
int bd_id;
u_long bd_flags; /* board-specific flags */
struct sb_chinfo pch, rch;
};
static int sb_rd(struct sb_info *sb, int reg);
static void sb_wr(struct sb_info *sb, int reg, u_int8_t val);
static int sb_dspready(struct sb_info *sb);
static int sb_cmd(struct sb_info *sb, u_char val);
static int sb_cmd1(struct sb_info *sb, u_char cmd, int val);
static int sb_cmd2(struct sb_info *sb, u_char cmd, int val);
static u_int sb_get_byte(struct sb_info *sb);
static void sb_setmixer(struct sb_info *sb, u_int port, u_int value);
static int sb_getmixer(struct sb_info *sb, u_int port);
static int sb_reset_dsp(struct sb_info *sb);
static void sb_intr(void *arg);
static int sb_speed(struct sb_chinfo *ch);
static int sb_start(struct sb_chinfo *ch);
static int sb_stop(struct sb_chinfo *ch);
static int sbmix_init(snd_mixer *m);
static int sbmix_set(snd_mixer *m, unsigned dev, unsigned left, unsigned right);
static int sbmix_setrecsrc(snd_mixer *m, u_int32_t src);
static snd_mixer sb_mixer = {
"SoundBlaster mixer",
sbmix_init,
sbmix_set,
sbmix_setrecsrc,
};
static devclass_t pcm_devclass;
/*
* Common code for the midi and pcm functions
*
* sb_cmd write a single byte to the CMD port.
* sb_cmd1 write a CMD + 1 byte arg
* sb_cmd2 write a CMD + 2 byte arg
* sb_get_byte returns a single byte from the DSP data port
*
* ess_write is actually sb_cmd1
* ess_read access ext. regs via sb_cmd(0xc0, reg) followed by sb_get_byte
*/
static int
port_rd(struct resource *port, int off)
{
return bus_space_read_1(rman_get_bustag(port),
rman_get_bushandle(port),
off);
}
static void
port_wr(struct resource *port, int off, u_int8_t data)
{
return bus_space_write_1(rman_get_bustag(port),
rman_get_bushandle(port),
off, data);
}
static int
sb_rd(struct sb_info *sb, int reg)
{
return port_rd(sb->io_base, reg);
}
static void
sb_wr(struct sb_info *sb, int reg, u_int8_t val)
{
port_wr(sb->io_base, reg, val);
}
static int
sb_dspready(struct sb_info *sb)
{
return ((sb_rd(sb, SBDSP_STATUS) & 0x80) == 0);
}
static int
sb_dspwr(struct sb_info *sb, u_char val)
{
int i;
for (i = 0; i < 1000; i++) {
if (sb_dspready(sb)) {
sb_wr(sb, SBDSP_CMD, val);
return 1;
}
if (i > 10) DELAY((i > 100)? 1000 : 10);
}
printf("sb_dspwr(0x%02x) timed out.\n", val);
return 0;
}
static int
sb_cmd(struct sb_info *sb, u_char val)
{
#if 0
printf("sb_cmd: %x\n", val);
#endif
return sb_dspwr(sb, val);
}
static int
sb_cmd1(struct sb_info *sb, u_char cmd, int val)
{
#if 0
printf("sb_cmd1: %x, %x\n", cmd, val);
#endif
if (sb_dspwr(sb, cmd)) {
return sb_dspwr(sb, val & 0xff);
} else return 0;
}
static int
sb_cmd2(struct sb_info *sb, u_char cmd, int val)
{
#if 0
printf("sb_cmd2: %x, %x\n", cmd, val);
#endif
if (sb_dspwr(sb, cmd)) {
return sb_dspwr(sb, val & 0xff) &&
sb_dspwr(sb, (val >> 8) & 0xff);
} else return 0;
}
/*
* in the SB, there is a set of indirect "mixer" registers with
* address at offset 4, data at offset 5
*/
static void
sb_setmixer(struct sb_info *sb, u_int port, u_int value)
{
u_long flags;
flags = spltty();
sb_wr(sb, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
DELAY(10);
sb_wr(sb, SB_MIX_DATA, (u_char) (value & 0xff));
DELAY(10);
splx(flags);
}
static int
sb_getmixer(struct sb_info *sb, u_int port)
{
int val;
u_long flags;
flags = spltty();
sb_wr(sb, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
DELAY(10);
val = sb_rd(sb, SB_MIX_DATA);
DELAY(10);
splx(flags);
return val;
}
static u_int
sb_get_byte(struct sb_info *sb)
{
int i;
for (i = 1000; i > 0; i--) {
if (sb_rd(sb, DSP_DATA_AVAIL) & 0x80)
return sb_rd(sb, DSP_READ);
else
DELAY(20);
}
return 0xffff;
}
static int
sb_reset_dsp(struct sb_info *sb)
{
sb_wr(sb, SBDSP_RST, 3);
DELAY(100);
sb_wr(sb, SBDSP_RST, 0);
if (sb_get_byte(sb) != 0xAA) {
DEB(printf("sb_reset_dsp 0x%lx failed\n",
rman_get_start(d->io_base)));
return ENXIO; /* Sorry */
}
if (sb->bd_flags & BD_F_ESS)
sb_cmd(sb, 0xc6);
return 0;
}
static void
sb_release_resources(struct sb_info *sb, device_t dev)
{
/* should we bus_teardown_intr here? */
if (sb->irq) {
bus_release_resource(dev, SYS_RES_IRQ, 0, sb->irq);
sb->irq = 0;
}
if (sb->drq1) {
bus_release_resource(dev, SYS_RES_DRQ, 0, sb->drq1);
sb->drq1 = 0;
}
if (sb->drq2) {
bus_release_resource(dev, SYS_RES_DRQ, 1, sb->drq2);
sb->drq2 = 0;
}
if (sb->io_base) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, sb->io_base);
sb->io_base = 0;
}
free(sb, M_DEVBUF);
}
static int
sb_alloc_resources(struct sb_info *sb, device_t dev)
{
int rid;
rid = 0;
if (!sb->io_base)
sb->io_base = bus_alloc_resource(dev, SYS_RES_IOPORT,
&rid, 0, ~0, 1,
RF_ACTIVE);
rid = 0;
if (!sb->irq)
sb->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
&rid, 0, ~0, 1,
RF_ACTIVE);
rid = 0;
if (!sb->drq1)
sb->drq1 = bus_alloc_resource(dev, SYS_RES_DRQ,
&rid, 0, ~0, 1,
RF_ACTIVE);
rid = 1;
if (!sb->drq2)
sb->drq2 = bus_alloc_resource(dev, SYS_RES_DRQ,
&rid, 0, ~0, 1,
RF_ACTIVE);
if (sb->io_base && sb->drq1 && sb->irq) {
int bs = DSP_BUFFSIZE;
isa_dma_acquire(rman_get_start(sb->drq1));
isa_dmainit(rman_get_start(sb->drq1), bs);
if (sb->drq2) {
isa_dma_acquire(rman_get_start(sb->drq2));
isa_dmainit(rman_get_start(sb->drq2), bs);
}
return 0;
} else return ENXIO;
}
static void
sb16_swap(void *v, int dir)
{
struct sb_info *sb = v;
int pb = sb->pch.buffer->dl;
int rb = sb->rch.buffer->dl;
int pc = sb->pch.buffer->chan;
int rc = sb->rch.buffer->chan;
int swp = 0;
if (!pb && !rb) {
if (dir == PCMDIR_PLAY && pc < 4)
swp = 1;
else
if (dir == PCMDIR_REC && rc < 4)
swp = 1;
if (swp) {
int t;
t = sb->pch.buffer->chan;
sb->pch.buffer->chan = sb->rch.buffer->chan;
sb->rch.buffer->chan = t;
sb->pch.buffer->dir = ISADMA_WRITE;
sb->rch.buffer->dir = ISADMA_READ;
}
}
}
static int
sb_doattach(device_t dev, struct sb_info *sb)
{
snddev_info *d = device_get_softc(dev);
void *ih;
char status[SND_STATUSLEN];
int bs = DSP_BUFFSIZE;
if (sb_alloc_resources(sb, dev))
goto no;
if (sb_reset_dsp(sb))
goto no;
mixer_init(d, &sb_mixer, sb);
bus_setup_intr(dev, sb->irq, INTR_TYPE_TTY, sb_intr, sb, &ih);
if ((sb->bd_flags & BD_F_SB16) && !(sb->bd_flags & BD_F_SB16X))
pcm_setswap(dev, sb16_swap);
if (!sb->drq2)
pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/bs, /*nsegments*/1,
/*maxsegz*/0x3ffff,
/*flags*/0, &sb->parent_dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");
goto no;
}
snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld drq %ld",
rman_get_start(sb->io_base), rman_get_start(sb->irq),
rman_get_start(sb->drq1));
if (sb->drq2)
snprintf(status + strlen(status), SND_STATUSLEN - strlen(status),
":%ld", rman_get_start(sb->drq2));
if (pcm_register(dev, sb, 1, 1))
goto no;
pcm_addchan(dev, PCMDIR_REC, &sb_chantemplate, sb);
pcm_addchan(dev, PCMDIR_PLAY, &sb_chantemplate, sb);
pcm_setstatus(dev, status);
return 0;
no:
sb_release_resources(sb, dev);
return ENXIO;
}
static void
sb_intr(void *arg)
{
struct sb_info *sb = (struct sb_info *)arg;
int reason = 3, c;
/*
* SB < 4.0 is half duplex and has only 1 bit for int source,
* so we fake it. SB 4.x (SB16) has the int source in a separate
* register.
* The Vibra16X has separate flags for 8 and 16 bit transfers, but
* I have no idea how to tell capture from playback interrupts...
*/
if (sb->bd_flags & BD_F_SB16) {
c = sb_getmixer(sb, IRQ_STAT);
/* this tells us if the source is 8-bit or 16-bit dma. We
* have to check the io channel to map it to read or write...
*/
reason = 0;
if (c & 1) { /* 8-bit dma */
if (sb->pch.fmt & AFMT_U8)
reason |= 1;
if (sb->rch.fmt & AFMT_U8)
reason |= 2;
}
if (c & 2) { /* 16-bit dma */
if (sb->pch.fmt & AFMT_S16_LE)
reason |= 1;
if (sb->rch.fmt & AFMT_S16_LE)
reason |= 2;
}
} else c = 1;
#if 0
printf("sb_intr: reason=%d c=0x%x\n", reason, c);
#endif
if ((reason & 1) && (sb->pch.buffer->dl > 0))
chn_intr(sb->pch.channel);
if ((reason & 2) && (sb->rch.buffer->dl > 0))
chn_intr(sb->rch.channel);
if (c & 1)
sb_rd(sb, DSP_DATA_AVAIL); /* 8-bit int ack */
if (c & 2)
sb_rd(sb, DSP_DATA_AVL16); /* 16-bit int ack */
}
static int
sb_speed(struct sb_chinfo *ch)
{
struct sb_info *sb = ch->parent;
int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
int stereo = (ch->fmt & AFMT_STEREO)? 1 : 0;
int speed = ch->spd;
if (sb->bd_flags & BD_F_SB16) {
RANGE(speed, 5000, 45000);
sb_cmd(sb, 0x42 - play);
sb_cmd(sb, speed >> 8);
sb_cmd(sb, speed & 0xff);
} else {
u_char tconst;
int max_speed = 45000, tmp;
u_long flags;
/* here enforce speed limitations - max 22050 on sb 1.x*/
if (sb->bd_id <= 0x200)
max_speed = 22050;
/*
* SB models earlier than SB Pro have low limit for the
* input rate. Note that this is only for input, but since
* we do not support separate values for rec & play....
*/
if (!play) {
if (sb->bd_id <= 0x200)
max_speed = 13000;
else
if (sb->bd_id < 0x300)
max_speed = 15000;
}
RANGE(speed, 4000, max_speed);
if (stereo)
speed <<= 1;
/*
* Now the speed should be valid. Compute the value to be
* programmed into the board.
*/
if (speed > 22050) { /* High speed mode on 2.01/3.xx */
tconst = (u_char)
((65536 - ((256000000 + speed / 2) / speed))
>> 8);
sb->bd_flags |= BD_F_HISPEED;
tmp = 65536 - (tconst << 8);
speed = (256000000 + tmp / 2) / tmp;
} else {
sb->bd_flags &= ~BD_F_HISPEED;
tconst = (256 - ((1000000 + speed / 2) / speed)) & 0xff;
tmp = 256 - tconst;
speed = (1000000 + tmp / 2) / tmp;
}
flags = spltty();
sb_cmd1(sb, 0x40, tconst); /* set time constant */
splx(flags);
if (stereo)
speed >>= 1;
}
ch->spd = speed;
return speed;
}
static int
sb_start(struct sb_chinfo *ch)
{
struct sb_info *sb = ch->parent;
int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
int b16 = (ch->fmt & AFMT_S16_LE)? 1 : 0;
int stereo = (ch->fmt & AFMT_STEREO)? 1 : 0;
int l = ch->buffer->dl;
int dh = ch->buffer->chan > 3;
u_char i1, i2;
if (b16 || dh)
l >>= 1;
l--;
if (play)
sb_cmd(sb, DSP_CMD_SPKON);
if (sb->bd_flags & BD_F_SB16) {
i1 = DSP_F16_AUTO | DSP_F16_FIFO_ON;
i1 |= play? DSP_F16_DAC : DSP_F16_ADC;
i1 |= (b16 || dh)? DSP_DMA16 : DSP_DMA8;
i2 = (stereo? DSP_F16_STEREO : 0) | (b16? DSP_F16_SIGNED : 0);
sb_cmd(sb, i1);
sb_cmd2(sb, i2, l);
} else {
if (sb->bd_flags & BD_F_HISPEED)
i1 = play? 0x90 : 0x98;
else
i1 = play? 0x1c : 0x2c;
sb_setmixer(sb, 0x0e, stereo? 2 : 0);
sb_cmd2(sb, 0x48, l);
sb_cmd(sb, i1);
}
sb->bd_flags |= BD_F_DMARUN << b16;
return 0;
}
static int
sb_stop(struct sb_chinfo *ch)
{
struct sb_info *sb = ch->parent;
int play = (ch->dir == PCMDIR_PLAY)? 1 : 0;
int b16 = (ch->fmt & AFMT_S16_LE)? 1 : 0;
if (sb->bd_flags & BD_F_HISPEED)
sb_reset_dsp(sb);
else {
sb_cmd(sb, b16? DSP_CMD_DMAPAUSE_16 : DSP_CMD_DMAPAUSE_8);
/*
* The above seems to have the undocumented side effect of
* blocking the other side as well. If the other
* channel was active (SB16) I have to re-enable it :(
*/
if (sb->bd_flags & (BD_F_DMARUN << (1 - b16)))
sb_cmd(sb, b16? 0xd4 : 0xd6 );
}
if (play)
sb_cmd(sb, DSP_CMD_SPKOFF); /* speaker off */
sb->bd_flags &= ~(BD_F_DMARUN << b16);
return 0;
}
/* channel interface */
static void *
sbchan_init(void *devinfo, snd_dbuf *b, pcm_channel *c, int dir)
{
struct sb_info *sb = devinfo;
struct sb_chinfo *ch = (dir == PCMDIR_PLAY)? &sb->pch : &sb->rch;
int dch, dl, dh;
ch->parent = sb;
ch->channel = c;
ch->buffer = b;
ch->buffer->bufsize = DSP_BUFFSIZE;
if (chn_allocbuf(ch->buffer, sb->parent_dmat) == -1)
return NULL;
dch = (dir == PCMDIR_PLAY)? 1 : 0;
if (sb->bd_flags & BD_F_SB16X)
dch = !dch;
dl = rman_get_start(sb->drq1);
dh = sb->drq2? rman_get_start(sb->drq2) : dl;
ch->buffer->chan = dch? dh : dl;
return ch;
}
static int
sbchan_setdir(void *data, int dir)
{
struct sb_chinfo *ch = data;
ch->dir = dir;
return 0;
}
static int
sbchan_setformat(void *data, u_int32_t format)
{
struct sb_chinfo *ch = data;
ch->fmt = format;
return 0;
}
static int
sbchan_setspeed(void *data, u_int32_t speed)
{
struct sb_chinfo *ch = data;
ch->spd = speed;
return sb_speed(ch);
}
static int
sbchan_setblocksize(void *data, u_int32_t blocksize)
{
return blocksize;
}
static int
sbchan_trigger(void *data, int go)
{
struct sb_chinfo *ch = data;
if (go == PCMTRIG_EMLDMAWR)
return 0;
buf_isadma(ch->buffer, go);
if (go == PCMTRIG_START)
sb_start(ch);
else
sb_stop(ch);
return 0;
}
static int
sbchan_getptr(void *data)
{
struct sb_chinfo *ch = data;
return buf_isadmaptr(ch->buffer);
}
static pcmchan_caps *
sbchan_getcaps(void *data)
{
struct sb_chinfo *ch = data;
int p = (ch->dir == PCMDIR_PLAY)? 1 : 0;
if (ch->parent->bd_id < 0x300)
return p? &sb_playcaps : &sb_reccaps;
else if (ch->parent->bd_id < 0x400)
return p? &sbpro_playcaps : &sbpro_reccaps;
else if (ch->parent->bd_flags & BD_F_SB16X)
return &sb16x_caps;
else
return (ch->buffer->chan >= 4)? &sb16_hcaps : &sb16_lcaps;
}
/************************************************************/
static int
sbmix_init(snd_mixer *m)
{
struct sb_info *sb = mix_getdevinfo(m);
switch (sb->bd_flags & BD_F_MIX_MASK) {
case BD_F_MIX_CT1345: /* SB 3.0 has 1345 mixer */
mix_setdevs(m, SBPRO_MIXER_DEVICES);
mix_setrecdevs(m, SBPRO_RECORDING_DEVICES);
sb_setmixer(sb, 0, 1); /* reset mixer */
sb_setmixer(sb, MIC_VOL, 0x6); /* mic volume max */
sb_setmixer(sb, RECORD_SRC, 0x0); /* mic source */
sb_setmixer(sb, FM_VOL, 0x0); /* no midi */
break;
case BD_F_MIX_CT1745: /* SB16 mixer ... */
mix_setdevs(m, SB16_MIXER_DEVICES);
mix_setrecdevs(m, SB16_RECORDING_DEVICES);
sb_setmixer(sb, 0x3c, 0x1f); /* make all output active */
sb_setmixer(sb, 0x3d, 0); /* make all inputs-l off */
sb_setmixer(sb, 0x3e, 0); /* make all inputs-r off */
}
return 0;
}
static int
sbmix_set(snd_mixer *m, unsigned dev, unsigned left, unsigned right)
{
struct sb_info *sb = mix_getdevinfo(m);
int regoffs;
u_char val;
mixer_tab *iomap;
switch (sb->bd_flags & BD_F_MIX_MASK) {
case BD_F_MIX_CT1345:
iomap = &sbpro_mix;
break;
case BD_F_MIX_CT1745:
iomap = &sb16_mix;
break;
default:
return -1;
}
/* Change left channel */
regoffs = (*iomap)[dev][LEFT_CHN].regno;
if (regoffs != 0) {
val = sb_getmixer(sb, regoffs);
change_bits(iomap, &val, dev, LEFT_CHN, left);
sb_setmixer(sb, regoffs, val);
}
/* Change right channel */
regoffs = (*iomap)[dev][RIGHT_CHN].regno;
if (regoffs != 0) {
val = sb_getmixer(sb, regoffs); /* Read the new one */
change_bits(iomap, &val, dev, RIGHT_CHN, right);
sb_setmixer(sb, regoffs, val);
} else
right = left;
return left | (right << 8);
}
static int
sbmix_setrecsrc(snd_mixer *m, u_int32_t src)
{
struct sb_info *sb = mix_getdevinfo(m);
u_char recdev;
switch (sb->bd_flags & BD_F_MIX_MASK) {
case BD_F_MIX_CT1345:
if (src == SOUND_MASK_LINE)
recdev = 0x06;
else if (src == SOUND_MASK_CD)
recdev = 0x02;
else { /* default: mic */
src = SOUND_MASK_MIC;
recdev = 0;
}
sb_setmixer(sb, RECORD_SRC, recdev |
(sb_getmixer(sb, RECORD_SRC) & ~0x07));
break;
case BD_F_MIX_CT1745: /* sb16 */
recdev = 0;
if (src & SOUND_MASK_MIC)
recdev |= 0x01; /* mono mic */
if (src & SOUND_MASK_CD)
recdev |= 0x06; /* l+r cd */
if (src & SOUND_MASK_LINE)
recdev |= 0x18; /* l+r line */
if (src & SOUND_MASK_SYNTH)
recdev |= 0x60; /* l+r midi */
sb_setmixer(sb, SB16_IMASK_L, recdev);
sb_setmixer(sb, SB16_IMASK_R, recdev);
/*
* since the same volume controls apply to the input and
* output sections, the best approach to have a consistent
* behaviour among cards would be to disable the output path
* on devices which are used to record.
* However, since users like to have feedback, we only disable
* the mic -- permanently.
*/
sb_setmixer(sb, SB16_OMASK, 0x1f & ~1);
break;
}
return src;
}
static int
sbsbc_probe(device_t dev)
{
char buf[64];
uintptr_t func, ver, r, f;
/* The parent device has already been probed. */
r = BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
if (func != SCF_PCM)
return (ENXIO);
r = BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
f = (ver & 0xffff0000) >> 16;
ver &= 0x0000ffff;
if (f & BD_F_ESS)
return (ENXIO);
snprintf(buf, sizeof buf, "SB DSP %d.%02d%s", (int) ver >> 8, (int) ver & 0xff,
(f & BD_F_SB16X)? " (ViBRA16X)" : "");
device_set_desc_copy(dev, buf);
return 0;
}
static int
sbsbc_attach(device_t dev)
{
struct sb_info *sb;
uintptr_t ver;
sb = (struct sb_info *)malloc(sizeof *sb, M_DEVBUF, M_NOWAIT);
if (!sb)
return ENXIO;
bzero(sb, sizeof *sb);
BUS_READ_IVAR(device_get_parent(dev), dev, 1, &ver);
sb->bd_id = ver & 0x0000ffff;
sb->bd_flags = (ver & 0xffff0000) >> 16;
return sb_doattach(dev, sb);
}
static device_method_t sbsbc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sbsbc_probe),
DEVMETHOD(device_attach, sbsbc_attach),
{ 0, 0 }
};
static driver_t sbsbc_driver = {
"pcm",
sbsbc_methods,
sizeof(snddev_info),
};
DRIVER_MODULE(sbsbc, sbc, sbsbc_driver, pcm_devclass, 0, 0);
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