File: [local] / sys / dev / isa / ad1848.c (download)
Revision 1.1, Tue Mar 4 16:11:15 2008 UTC (16 years, 1 month ago) by nbrk
Branch point for: MAIN
Initial revision
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/* $OpenBSD: ad1848.c,v 1.32 2005/05/22 19:40:51 art Exp $ */
/* $NetBSD: ad1848.c,v 1.45 1998/01/30 02:02:38 augustss Exp $ */
/*
* Copyright (c) 1994 John Brezak
* Copyright (c) 1991-1993 Regents of the University of California.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
*/
/*
* Copyright by Hannu Savolainen 1994
*
* 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.
*
*/
/*
* Portions of this code are from the VOXware support for the ad1848
* by Hannu Savolainen <hannu@voxware.pp.fi>
*
* Portions also supplied from the SoundBlaster driver for NetBSD.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/auconv.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>
#include <dev/ic/ad1848reg.h>
#include <dev/ic/cs4231reg.h>
#include <dev/isa/ad1848var.h>
#include <dev/isa/cs4231var.h>
#ifdef AUDIO_DEBUG
#define DPRINTF(x) if (ad1848debug) printf x
int ad1848debug = 0;
#else
#define DPRINTF(x)
#endif
/*
* Initial values for the indirect registers of CS4248/AD1848.
*/
static int ad1848_init_values[] = {
/* Left Input Control */
GAIN_12|INPUT_MIC_GAIN_ENABLE,
/* Right Input Control */
GAIN_12|INPUT_MIC_GAIN_ENABLE,
ATTEN_12, /* Left Aux #1 Input Control */
ATTEN_12, /* Right Aux #1 Input Control */
ATTEN_12, /* Left Aux #2 Input Control */
ATTEN_12, /* Right Aux #2 Input Control */
/* bits 5-0 are attenuation select */
ATTEN_12, /* Left DAC output Control */
ATTEN_12, /* Right DAC output Control */
/* Clock and Data Format */
CLOCK_XTAL1|FMT_PCM8,
/* Interface Config */
SINGLE_DMA|AUTO_CAL_ENABLE,
INTERRUPT_ENABLE, /* Pin control */
0x00, /* Test and Init */
MODE2, /* Misc control */
ATTEN_0<<2, /* Digital Mix Control */
0, /* Upper base Count */
0, /* Lower base Count */
/* These are for CS4231 &c. only (additional registers): */
0, /* Alt feature 1 */
0, /* Alt feature 2 */
ATTEN_12, /* Left line in */
ATTEN_12, /* Right line in */
0, /* Timer low */
0, /* Timer high */
0, /* unused */
0, /* unused */
0, /* IRQ status */
0, /* unused */
/* Mono input (a.k.a speaker) (mic) Control */
MONO_INPUT_MUTE|ATTEN_6, /* mute speaker by default */
0, /* unused */
0, /* record format */
0, /* Crystal Clock Select */
0, /* upper record count */
0 /* lower record count */
};
void ad1848_reset(struct ad1848_softc *);
int ad1848_set_speed(struct ad1848_softc *, u_long *);
void ad1848_mute_monitor(void *, int);
static int ad_read(struct ad1848_softc *, int);
static void ad_write(struct ad1848_softc *, int, int);
static void ad_set_MCE(struct ad1848_softc *, int);
static void wait_for_calibration(struct ad1848_softc *);
#define ADREAD(sc, addr) bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, (sc)->sc_iooffs+(addr))
#define ADWRITE(sc, addr, data) bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, (sc)->sc_iooffs+(addr), (data))
static int
ad_read(sc, reg)
struct ad1848_softc *sc;
int reg;
{
int x, s;
s = splaudio();
ADWRITE(sc, AD1848_IADDR, (reg & 0xff) | sc->MCE_bit);
x = ADREAD(sc, AD1848_IDATA);
splx(s);
/* printf("(%02x<-%02x) ", reg|sc->MCE_bit, x); */
return x;
}
static void
ad_write(sc, reg, data)
struct ad1848_softc *sc;
int reg;
int data;
{
int s = splaudio();
ADWRITE(sc, AD1848_IADDR, (reg & 0xff) | sc->MCE_bit);
ADWRITE(sc, AD1848_IDATA, data & 0xff);
splx(s);
/* printf("(%02x->%02x) ", reg|sc->MCE_bit, data); */
}
static void
ad_set_MCE(sc, state)
struct ad1848_softc *sc;
int state;
{
if (state)
sc->MCE_bit = MODE_CHANGE_ENABLE;
else
sc->MCE_bit = 0;
ADWRITE(sc, AD1848_IADDR, sc->MCE_bit);
}
static void
wait_for_calibration(sc)
struct ad1848_softc *sc;
{
int timeout;
DPRINTF(("ad1848: Auto calibration started.\n"));
/*
* Wait until the auto calibration process has finished.
*
* 1) Wait until the chip becomes ready (reads don't return 0x80).
* 2) Wait until the ACI bit of I11 gets on and then off.
*/
timeout = 100000;
while (timeout > 0 && ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
timeout--;
if (ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
DPRINTF(("ad1848: Auto calibration timed out(1).\n"));
ADWRITE(sc, AD1848_IADDR, SP_TEST_AND_INIT);
timeout = 100000;
while (timeout > 0 && ADREAD(sc, AD1848_IADDR) != SP_TEST_AND_INIT)
timeout--;
if (ADREAD(sc, AD1848_IADDR) == SP_TEST_AND_INIT)
DPRINTF(("ad1848: Auto calibration timed out(1.5).\n"));
if (!(ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG)) {
timeout = 100000;
while (timeout > 0 && !(ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG))
timeout--;
if (!(ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG))
DPRINTF(("ad1848: Auto calibration timed out(2).\n"));
}
timeout = 100000;
while (timeout > 0 && ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG)
timeout--;
if (ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG)
DPRINTF(("ad1848: Auto calibration timed out(3).\n"));
}
#ifdef AUDIO_DEBUG
void ad1848_dump_regs(struct ad1848_softc *);
void
ad1848_dump_regs(sc)
struct ad1848_softc *sc;
{
int i;
u_char r;
printf("ad1848 status=%02x", ADREAD(sc, AD1848_STATUS));
printf(" regs: ");
for (i = 0; i < 16; i++) {
r = ad_read(sc, i);
printf("%02x ", r);
}
if (sc->mode == 2) {
for (i = 16; i < 32; i++) {
r = ad_read(sc, i);
printf("%02x ", r);
}
}
printf("\n");
}
#endif
/*
* Map and probe for the ad1848 chip
*/
int
ad1848_mapprobe(sc, iobase)
struct ad1848_softc *sc;
int iobase;
{
if (!AD1848_BASE_VALID(iobase)) {
#ifdef AUDIO_DEBUG
printf("ad1848: configured iobase %04x invalid\n", iobase);
#endif
return 0;
}
sc->sc_iooffs = 0;
/* Map the AD1848 ports */
if (bus_space_map(sc->sc_iot, iobase, AD1848_NPORT, 0, &sc->sc_ioh))
return 0;
if (!ad1848_probe(sc)) {
bus_space_unmap(sc->sc_iot, sc->sc_ioh, AD1848_NPORT);
return 0;
} else
return 1;
}
/*
* Probe for the ad1848 chip
*/
int
ad1848_probe(sc)
struct ad1848_softc *sc;
{
u_char tmp, tmp1 = 0xff, tmp2 = 0xff;
#if 0
int i;
#endif
/* Is there an ad1848 chip ? */
sc->MCE_bit = MODE_CHANGE_ENABLE;
sc->mode = 1; /* MODE 1 = original ad1848/ad1846/cs4248 */
/*
* Check that the I/O address is in use.
*
* The SP_IN_INIT bit of the base I/O port is known to be 0 after the
* chip has performed its power-on initialization. Just assume
* this has happened before the OS is starting.
*
* If the I/O address is unused, inb() typically returns 0xff.
*/
tmp = ADREAD(sc, AD1848_IADDR);
if (tmp & SP_IN_INIT) { /* Not a AD1848 */
#if 0
DPRINTF(("ad_detect_A %x\n", tmp));
#endif
goto bad;
}
/*
* Test if it's possible to change contents of the indirect registers.
* Registers 0 and 1 are ADC volume registers. The bit 0x10 is read only
* so try to avoid using it.
*/
ad_write(sc, 0, 0xaa);
ad_write(sc, 1, 0x45); /* 0x55 with bit 0x10 clear */
if ((tmp1 = ad_read(sc, 0)) != 0xaa ||
(tmp2 = ad_read(sc, 1)) != 0x45) {
DPRINTF(("ad_detect_B (%x/%x)\n", tmp1, tmp2));
goto bad;
}
ad_write(sc, 0, 0x45);
ad_write(sc, 1, 0xaa);
if ((tmp1 = ad_read(sc, 0)) != 0x45 ||
(tmp2 = ad_read(sc, 1)) != 0xaa) {
DPRINTF(("ad_detect_C (%x/%x)\n", tmp1, tmp2));
goto bad;
}
/*
* The indirect register I12 has some read only bits. Lets
* try to change them.
*/
tmp = ad_read(sc, SP_MISC_INFO);
ad_write(sc, SP_MISC_INFO, (~tmp) & 0x0f);
if ((tmp & 0x0f) != ((tmp1 = ad_read(sc, SP_MISC_INFO)) & 0x0f)) {
DPRINTF(("ad_detect_D (%x)\n", tmp1));
goto bad;
}
/*
* MSB and 4 LSBs of the reg I12 tell the chip revision.
*
* A preliminary version of the AD1846 data sheet stated that it
* used an ID field of 0x0B. The current version, however,
* states that the AD1846 uses ID 0x0A, just like the AD1848K.
*
* this switch statement will need updating as newer clones arrive....
*/
switch (tmp1 & 0x8f) {
case 0x09:
sc->chip_name = "AD1848J";
break;
case 0x0A:
sc->chip_name = "AD1848K";
break;
#if 0 /* See above */
case 0x0B:
sc->chip_name = "AD1846";
break;
#endif
case 0x81:
sc->chip_name = "CS4248revB"; /* or CS4231 rev B; see below */
break;
case 0x89:
sc->chip_name = "CS4248";
break;
case 0x8A:
sc->chip_name = "broken"; /* CS4231/AD1845; see below */
break;
default:
sc->chip_name = "unknown";
DPRINTF(("ad1848: unknown codec version %#02X\n", (tmp1 & 0x8f)));
}
#if 0
/*
* XXX I don't know why, but this probe fails on an otherwise well-working
* AW35/pro card, so I'll just take it out for now. [niklas@openbsd.org]
*/
/*
* The original AD1848/CS4248 has just 16 indirect registers. This means
* that I0 and I16 should return the same value (etc.).
* Ensure that the Mode2 enable bit of I12 is 0. Otherwise this test fails
* with CS4231, AD1845, etc.
*/
ad_write(sc, SP_MISC_INFO, 0); /* Mode2 = disabled */
for (i = 0; i < 16; i++)
if ((tmp1 = ad_read(sc, i)) != (tmp2 = ad_read(sc, i + 16))) {
if (i != SP_TEST_AND_INIT) {
DPRINTF(("ad_detect_F(%d/%x/%x)\n", i, tmp1, tmp2));
goto bad;
}
}
#endif
/*
* Try to switch the chip to mode2 (CS4231) by setting the MODE2 bit
* The bit 0x80 is always 1 in CS4248, CS4231, and AD1845.
*/
ad_write(sc, SP_MISC_INFO, MODE2); /* Set mode2, clear 0x80 */
tmp1 = ad_read(sc, SP_MISC_INFO);
if ((tmp1 & 0xc0) == (0x80 | MODE2)) {
/*
* CS4231 or AD1845 detected - is it?
*
* Verify that setting I2 doesn't change I18.
*/
ad_write(sc, 18, 0x88); /* Set I18 to known value */
ad_write(sc, 2, 0x45);
if ((tmp2 = ad_read(sc, 18)) != 0x45) { /* No change -> CS4231? */
ad_write(sc, 2, 0xaa);
if ((tmp2 = ad_read(sc, 18)) == 0xaa) { /* Rotten bits? */
DPRINTF(("ad_detect_H(%x)\n", tmp2));
goto bad;
}
/*
* It's a CS4231, or another clone with 32 registers.
* Let's find out which by checking I25.
*/
if ((tmp1 & 0x8f) == 0x8a) {
tmp1 = ad_read(sc, CS_VERSION_ID);
switch (tmp1 & 0xe7) {
case 0xA0:
sc->chip_name = "CS4231A";
break;
case 0x80:
/* XXX I25 no good, AD1845 same as CS4231 */
sc->chip_name = "CS4231 or AD1845";
break;
case 0x82:
case 0xa2:
sc->chip_name = "CS4232";
break;
case 0x03:
sc->chip_name = "CS4236/CS4236B";
break;
}
}
sc->mode = 2;
}
}
/* Wait for 1848 to init */
while(ADREAD(sc, AD1848_IADDR) & SP_IN_INIT)
;
/* Wait for 1848 to autocal */
ADWRITE(sc, AD1848_IADDR, SP_TEST_AND_INIT);
while(ADREAD(sc, AD1848_IDATA) & AUTO_CAL_IN_PROG)
;
return 1;
bad:
return 0;
}
/* Unmap the I/O ports */
void
ad1848_unmap(sc)
struct ad1848_softc *sc;
{
bus_space_unmap(sc->sc_iot, sc->sc_ioh, AD1848_NPORT);
}
/*
* Attach hardware to driver, attach hardware driver to audio
* pseudo-device driver .
*/
void
ad1848_attach(sc)
struct ad1848_softc *sc;
{
int i;
struct ad1848_volume vol_mid = {220, 220};
struct ad1848_volume vol_0 = {0, 0};
struct audio_params pparams, rparams;
int timeout;
sc->sc_locked = 0;
sc->sc_playrun = NOTRUNNING;
sc->sc_recrun = NOTRUNNING;
if (sc->sc_drq != -1) {
if (isa_dmamap_create(sc->sc_isa, sc->sc_drq, MAX_ISADMA,
BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
printf("ad1848_attach: can't create map for drq %d\n",
sc->sc_drq);
return;
}
}
if (sc->sc_recdrq != -1 && sc->sc_recdrq != sc->sc_drq) {
if (isa_dmamap_create(sc->sc_isa, sc->sc_recdrq, MAX_ISADMA,
BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
printf("ad1848_attach: can't creape map for drq %d\n",
sc->sc_recdrq);
return;
}
}
/* Initialize the ad1848... */
for (i = 0; i < 0x10; i++) {
ad_write(sc, i, ad1848_init_values[i]);
timeout = 100000;
while (timeout > 0 && ad_read(sc, AD1848_IADDR) & SP_IN_INIT)
timeout--;
}
/* ...and additional CS4231 stuff too */
if (sc->mode == 2) {
ad_write(sc, SP_INTERFACE_CONFIG, 0); /* disable SINGLE_DMA */
for (i = 0x10; i < 0x20; i++)
if (ad1848_init_values[i] != 0) {
ad_write(sc, i, ad1848_init_values[i]);
timeout = 100000;
while (timeout > 0 &&
ad_read(sc, AD1848_IADDR) & SP_IN_INIT)
timeout--;
}
}
ad1848_reset(sc);
pparams = audio_default;
rparams = audio_default;
(void) ad1848_set_params(sc, AUMODE_RECORD|AUMODE_PLAY, 0, &pparams, &rparams);
/* Set default gains */
(void) ad1848_set_rec_gain(sc, &vol_mid);
(void) ad1848_set_channel_gain(sc, AD1848_DAC_CHANNEL, &vol_mid);
(void) ad1848_set_channel_gain(sc, AD1848_MONITOR_CHANNEL, &vol_0);
(void) ad1848_set_channel_gain(sc, AD1848_AUX1_CHANNEL, &vol_mid); /* CD volume */
if (sc->mode == 2) {
(void) ad1848_set_channel_gain(sc, AD1848_AUX2_CHANNEL, &vol_mid); /* CD volume */
(void) ad1848_set_channel_gain(sc, AD1848_LINE_CHANNEL, &vol_mid);
(void) ad1848_set_channel_gain(sc, AD1848_MONO_CHANNEL, &vol_0);
sc->mute[AD1848_MONO_CHANNEL] = MUTE_ALL;
} else
(void) ad1848_set_channel_gain(sc, AD1848_AUX2_CHANNEL, &vol_0);
/* Set default port */
(void) ad1848_set_rec_port(sc, MIC_IN_PORT);
if (sc->chip_name)
printf(": %s", sc->chip_name);
#undef WAITREADY
}
/*
* Various routines to interface to higher level audio driver
*/
struct ad1848_mixerinfo {
int left_reg;
int right_reg;
int atten_bits;
int atten_mask;
} mixer_channel_info[] =
{ { SP_LEFT_AUX2_CONTROL, SP_RIGHT_AUX2_CONTROL, AUX_INPUT_ATTEN_BITS,
AUX_INPUT_ATTEN_MASK },
{ SP_LEFT_AUX1_CONTROL, SP_RIGHT_AUX1_CONTROL, AUX_INPUT_ATTEN_BITS,
AUX_INPUT_ATTEN_MASK },
{ SP_LEFT_OUTPUT_CONTROL, SP_RIGHT_OUTPUT_CONTROL,
OUTPUT_ATTEN_BITS, OUTPUT_ATTEN_MASK },
{ CS_LEFT_LINE_CONTROL, CS_RIGHT_LINE_CONTROL, LINE_INPUT_ATTEN_BITS,
LINE_INPUT_ATTEN_MASK },
{ CS_MONO_IO_CONTROL, 0, MONO_INPUT_ATTEN_BITS, MONO_INPUT_ATTEN_MASK },
{ SP_DIGITAL_MIX, 0, OUTPUT_ATTEN_BITS, MIX_ATTEN_MASK }
};
/*
* This function doesn't set the mute flags but does use them.
* The mute flags reflect the mutes that have been applied by the user.
* However, the driver occasionally wants to mute devices (e.g. when chaing
* sampling rate). These operations should not affect the mute flags.
*/
void
ad1848_mute_channel(sc, device, mute)
struct ad1848_softc *sc;
int device;
int mute;
{
u_char reg;
reg = ad_read(sc, mixer_channel_info[device].left_reg);
if (mute & MUTE_LEFT) {
if (device == AD1848_MONITOR_CHANNEL)
ad_write(sc, mixer_channel_info[device].left_reg, reg & 0xFE);
else
ad_write(sc, mixer_channel_info[device].left_reg, reg | 0x80);
} else if (!(sc->mute[device] & MUTE_LEFT)) {
if (device == AD1848_MONITOR_CHANNEL)
ad_write(sc, mixer_channel_info[device].left_reg, reg | 0x01);
else
ad_write(sc, mixer_channel_info[device].left_reg, reg & ~0x80);
}
if (!mixer_channel_info[device].right_reg) {
return;
}
reg = ad_read(sc, mixer_channel_info[device].right_reg);
if (mute & MUTE_RIGHT)
ad_write(sc, mixer_channel_info[device].right_reg, reg | 0x80);
else if (!(sc->mute[device] & MUTE_RIGHT)) {
ad_write(sc, mixer_channel_info[device].right_reg, reg & ~0x80);
}
}
int
ad1848_set_channel_gain(sc, device, gp)
struct ad1848_softc *sc;
int device;
struct ad1848_volume *gp;
{
struct ad1848_mixerinfo *info = &mixer_channel_info[device];
u_char reg;
u_int atten;
sc->gains[device] = *gp;
atten = ((AUDIO_MAX_GAIN - gp->left) * info->atten_bits)/AUDIO_MAX_GAIN;
reg = ad_read(sc, info->left_reg) & (info->atten_mask);
if (device == AD1848_MONITOR_CHANNEL)
reg |= ((atten & info->atten_bits) << 2);
else
reg |= ((atten & info->atten_bits));
ad_write(sc, info->left_reg, reg);
if (!info->right_reg)
return (0);
atten = ((AUDIO_MAX_GAIN - gp->right) * info->atten_bits)/AUDIO_MAX_GAIN;
reg = ad_read(sc, info->right_reg);
reg &= (info->atten_mask);
ad_write(sc, info->right_reg, (atten& info->atten_bits)|reg);
return(0);
}
int
ad1848_get_device_gain(sc, device, gp)
struct ad1848_softc *sc;
int device;
struct ad1848_volume *gp;
{
*gp = sc->gains[device];
return(0);
}
int
ad1848_get_rec_gain(sc, gp)
struct ad1848_softc *sc;
struct ad1848_volume *gp;
{
*gp = sc->rec_gain;
return(0);
}
int
ad1848_set_rec_gain(sc, gp)
struct ad1848_softc *sc;
struct ad1848_volume *gp;
{
u_char reg, gain;
DPRINTF(("ad1848_set_rec_gain: %d:%d\n", gp->left, gp->right));
sc->rec_gain = *gp;
gain = (gp->left * GAIN_22_5)/AUDIO_MAX_GAIN;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
reg &= INPUT_GAIN_MASK;
ad_write(sc, SP_LEFT_INPUT_CONTROL, (gain&0x0f)|reg);
gain = (gp->right * GAIN_22_5)/AUDIO_MAX_GAIN;
reg = ad_read(sc, SP_RIGHT_INPUT_CONTROL);
reg &= INPUT_GAIN_MASK;
ad_write(sc, SP_RIGHT_INPUT_CONTROL, (gain&0x0f)|reg);
return(0);
}
void
ad1848_mute_monitor(addr, mute)
void *addr;
int mute;
{
struct ad1848_softc *sc = addr;
DPRINTF(("ad1848_mute_monitor: %smuting\n", mute ? "" : "un"));
if (sc->mode == 2) {
ad1848_mute_channel(sc, AD1848_DAC_CHANNEL, mute ? MUTE_ALL : 0);
ad1848_mute_channel(sc, AD1848_MONO_CHANNEL, mute ? MUTE_MONO : 0);
ad1848_mute_channel(sc, AD1848_LINE_CHANNEL, mute ? MUTE_ALL : 0);
}
ad1848_mute_channel(sc, AD1848_AUX2_CHANNEL, mute ? MUTE_ALL : 0);
ad1848_mute_channel(sc, AD1848_AUX1_CHANNEL, mute ? MUTE_ALL : 0);
}
int
ad1848_set_mic_gain(sc, gp)
struct ad1848_softc *sc;
struct ad1848_volume *gp;
{
u_char reg;
DPRINTF(("cs4231_set_mic_gain: %d\n", gp->left));
if (gp->left > AUDIO_MAX_GAIN/2) {
sc->mic_gain_on = 1;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
ad_write(sc, SP_LEFT_INPUT_CONTROL, reg | INPUT_MIC_GAIN_ENABLE);
} else {
sc->mic_gain_on = 0;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
ad_write(sc, SP_LEFT_INPUT_CONTROL, reg & ~INPUT_MIC_GAIN_ENABLE);
}
return(0);
}
int
ad1848_get_mic_gain(sc, gp)
struct ad1848_softc *sc;
struct ad1848_volume *gp;
{
if (sc->mic_gain_on)
gp->left = gp->right = AUDIO_MAX_GAIN;
else
gp->left = gp->right = AUDIO_MIN_GAIN;
return(0);
}
static ad1848_devmap_t *ad1848_mixer_find_dev(ad1848_devmap_t *, int, mixer_ctrl_t *);
static ad1848_devmap_t *
ad1848_mixer_find_dev(map, cnt, cp)
ad1848_devmap_t *map;
int cnt;
mixer_ctrl_t *cp;
{
int idx;
for (idx = 0; idx < cnt; idx++) {
if (map[idx].id == cp->dev) {
return (&map[idx]);
}
}
return (NULL);
}
int
ad1848_mixer_get_port(ac, map, cnt, cp)
struct ad1848_softc *ac;
struct ad1848_devmap *map;
int cnt;
mixer_ctrl_t *cp;
{
ad1848_devmap_t *entry;
struct ad1848_volume vol;
int error = EINVAL;
int dev;
if (!(entry = ad1848_mixer_find_dev(map, cnt, cp)))
return (ENXIO);
dev = entry->dev;
switch (entry->kind) {
case AD1848_KIND_LVL:
if (cp->type != AUDIO_MIXER_VALUE)
break;
if (dev < AD1848_AUX2_CHANNEL ||
dev > AD1848_MONITOR_CHANNEL)
break;
if (cp->un.value.num_channels != 1 &&
mixer_channel_info[dev].right_reg == 0)
break;
error = ad1848_get_device_gain(ac, dev, &vol);
if (!error)
ad1848_from_vol(cp, &vol);
break;
case AD1848_KIND_MUTE:
if (cp->type != AUDIO_MIXER_ENUM) break;
cp->un.ord = ac->mute[dev] ? 1 : 0;
error = 0;
break;
case AD1848_KIND_RECORDGAIN:
if (cp->type != AUDIO_MIXER_VALUE) break;
error = ad1848_get_rec_gain(ac, &vol);
if (!error)
ad1848_from_vol(cp, &vol);
break;
case AD1848_KIND_MICGAIN:
if (cp->type != AUDIO_MIXER_VALUE) break;
error = ad1848_get_mic_gain(ac, &vol);
if (!error)
ad1848_from_vol(cp, &vol);
break;
case AD1848_KIND_RECORDSOURCE:
if (cp->type != AUDIO_MIXER_ENUM) break;
cp->un.ord = ad1848_get_rec_port(ac);
error = 0;
break;
default:
printf ("Invalid kind\n");
break;
}
return (error);
}
int
ad1848_mixer_set_port(ac, map, cnt, cp)
struct ad1848_softc *ac;
struct ad1848_devmap *map;
int cnt;
mixer_ctrl_t *cp;
{
ad1848_devmap_t *entry;
struct ad1848_volume vol;
int error = EINVAL;
int dev;
if (!(entry = ad1848_mixer_find_dev(map, cnt, cp)))
return (ENXIO);
dev = entry->dev;
switch (entry->kind) {
case AD1848_KIND_LVL:
if (cp->type != AUDIO_MIXER_VALUE)
break;
if (dev < AD1848_AUX2_CHANNEL ||
dev > AD1848_MONITOR_CHANNEL)
break;
if (cp->un.value.num_channels != 1 &&
mixer_channel_info[dev].right_reg == 0)
break;
ad1848_to_vol(cp, &vol);
error = ad1848_set_channel_gain(ac, dev, &vol);
break;
case AD1848_KIND_MUTE:
if (cp->type != AUDIO_MIXER_ENUM) break;
ac->mute[dev] = (cp->un.ord ? MUTE_ALL : 0);
ad1848_mute_channel(ac, dev, ac->mute[dev]);
error = 0;
break;
case AD1848_KIND_RECORDGAIN:
if (cp->type != AUDIO_MIXER_VALUE) break;
ad1848_to_vol(cp, &vol);
error = ad1848_set_rec_gain(ac, &vol);
break;
case AD1848_KIND_MICGAIN:
if (cp->type != AUDIO_MIXER_VALUE) break;
ad1848_to_vol(cp, &vol);
error = ad1848_set_mic_gain(ac, &vol);
break;
case AD1848_KIND_RECORDSOURCE:
if (cp->type != AUDIO_MIXER_ENUM) break;
error = ad1848_set_rec_port(ac, cp->un.ord);
break;
default:
printf ("Invalid kind\n");
break;
}
return (error);
}
int
ad1848_query_encoding(addr, fp)
void *addr;
struct audio_encoding *fp;
{
struct ad1848_softc *sc = addr;
switch (fp->index) {
case 0:
strlcpy(fp->name, AudioEmulaw, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULAW;
fp->precision = 8;
fp->flags = 0;
break;
case 1:
strlcpy(fp->name, AudioEalaw, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ALAW;
fp->precision = 8;
fp->flags = 0;
break;
case 2:
strlcpy(fp->name, AudioEslinear_le, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
fp->precision = 16;
fp->flags = 0;
break;
case 3:
strlcpy(fp->name, AudioEulinear, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULINEAR;
fp->precision = 8;
fp->flags = 0;
break;
case 4: /* only on CS4231 */
strlcpy(fp->name, AudioEslinear_be, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
fp->precision = 16;
fp->flags = sc->mode == 1 ? AUDIO_ENCODINGFLAG_EMULATED : 0;
break;
/* emulate some modes */
case 5:
strlcpy(fp->name, AudioEslinear, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_SLINEAR;
fp->precision = 8;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
break;
case 6:
strlcpy(fp->name, AudioEulinear_le, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
fp->precision = 16;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
break;
case 7:
strlcpy(fp->name, AudioEulinear_be, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
fp->precision = 16;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
break;
case 8: /* only on CS4231 */
if (sc->mode == 1)
return EINVAL;
strlcpy(fp->name, AudioEadpcm, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ADPCM;
fp->precision = 8;
fp->flags = 0;
break;
default:
return EINVAL;
/*NOTREACHED*/
}
return (0);
}
int
ad1848_set_params(addr, setmode, usemode, p, r)
void *addr;
int setmode, usemode;
struct audio_params *p, *r;
{
struct ad1848_softc *sc = addr;
int error, bits, enc;
void (*pswcode)(void *, u_char *buf, int cnt);
void (*rswcode)(void *, u_char *buf, int cnt);
DPRINTF(("ad1848_set_params: %d %d %d %ld\n",
p->encoding, p->precision, p->channels, p->sample_rate));
enc = p->encoding;
pswcode = rswcode = 0;
switch (enc) {
case AUDIO_ENCODING_SLINEAR_LE:
if (p->precision == 8) {
enc = AUDIO_ENCODING_ULINEAR_LE;
pswcode = rswcode = change_sign8;
}
break;
case AUDIO_ENCODING_SLINEAR_BE:
if (p->precision == 16 && sc->mode == 1) {
enc = AUDIO_ENCODING_SLINEAR_LE;
pswcode = rswcode = swap_bytes;
}
break;
case AUDIO_ENCODING_ULINEAR_LE:
if (p->precision == 16) {
enc = AUDIO_ENCODING_SLINEAR_LE;
pswcode = rswcode = change_sign16;
}
break;
case AUDIO_ENCODING_ULINEAR_BE:
if (p->precision == 16) {
enc = AUDIO_ENCODING_SLINEAR_LE;
pswcode = swap_bytes_change_sign16;
rswcode = change_sign16_swap_bytes;
}
break;
}
switch (enc) {
case AUDIO_ENCODING_ULAW:
bits = FMT_ULAW >> 5;
break;
case AUDIO_ENCODING_ALAW:
bits = FMT_ALAW >> 5;
break;
case AUDIO_ENCODING_ADPCM:
bits = FMT_ADPCM >> 5;
break;
case AUDIO_ENCODING_SLINEAR_LE:
if (p->precision == 16)
bits = FMT_TWOS_COMP >> 5;
else
return EINVAL;
break;
case AUDIO_ENCODING_SLINEAR_BE:
if (p->precision == 16)
bits = FMT_TWOS_COMP_BE >> 5;
else
return EINVAL;
break;
case AUDIO_ENCODING_ULINEAR_LE:
if (p->precision == 8)
bits = FMT_PCM8 >> 5;
else
return EINVAL;
break;
default:
return EINVAL;
}
if (p->channels < 1 || p->channels > 2)
return EINVAL;
error = ad1848_set_speed(sc, &p->sample_rate);
if (error)
return error;
p->sw_code = pswcode;
r->sw_code = rswcode;
sc->format_bits = bits;
sc->channels = p->channels;
sc->precision = p->precision;
sc->need_commit = 1;
DPRINTF(("ad1848_set_params succeeded, bits=%x\n", bits));
return (0);
}
int
ad1848_set_rec_port(sc, port)
struct ad1848_softc *sc;
int port;
{
u_char inp, reg;
DPRINTF(("ad1848_set_rec_port: 0x%x\n", port));
if (port == MIC_IN_PORT) {
inp = MIC_INPUT;
}
else if (port == LINE_IN_PORT) {
inp = LINE_INPUT;
}
else if (port == DAC_IN_PORT) {
inp = MIXED_DAC_INPUT;
}
else if (sc->mode == 2 && port == AUX1_IN_PORT) {
inp = AUX_INPUT;
}
else
return(EINVAL);
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
reg &= INPUT_SOURCE_MASK;
ad_write(sc, SP_LEFT_INPUT_CONTROL, (inp|reg));
reg = ad_read(sc, SP_RIGHT_INPUT_CONTROL);
reg &= INPUT_SOURCE_MASK;
ad_write(sc, SP_RIGHT_INPUT_CONTROL, (inp|reg));
sc->rec_port = port;
return(0);
}
int
ad1848_get_rec_port(sc)
struct ad1848_softc *sc;
{
return(sc->rec_port);
}
int
ad1848_round_blocksize(addr, blk)
void *addr;
int blk;
{
struct ad1848_softc *sc = addr;
sc->sc_lastcc = -1;
/* Round to a multiple of the biggest sample size. */
blk = (blk + 3) & -4;
return (blk);
}
int
ad1848_open(addr, flags)
void *addr;
int flags;
{
struct ad1848_softc *sc = addr;
DPRINTF(("ad1848_open: sc=%p\n", sc));
sc->sc_intr = 0;
sc->sc_lastcc = -1;
sc->sc_locked = 0;
/* Enable interrupts */
DPRINTF(("ad1848_open: enable intrs\n"));
ad_write(sc, SP_PIN_CONTROL, INTERRUPT_ENABLE|ad_read(sc, SP_PIN_CONTROL));
#ifdef AUDIO_DEBUG
if (ad1848debug)
ad1848_dump_regs(sc);
#endif
return 0;
}
/*
* Close function is called at splaudio().
*/
void
ad1848_close(addr)
void *addr;
{
struct ad1848_softc *sc = addr;
u_char r;
sc->sc_intr = 0;
DPRINTF(("ad1848_close: stop DMA\n"));
if (sc->sc_playrun != NOTRUNNING) {
isa_dmaabort(sc->sc_isa, sc->sc_drq);
sc->sc_playrun = NOTRUNNING;
}
if (sc->sc_recrun != NOTRUNNING) {
isa_dmaabort(sc->sc_isa, sc->sc_recdrq);
sc->sc_recrun = NOTRUNNING;
}
ad_write(sc, SP_LOWER_BASE_COUNT, (u_char)0);
ad_write(sc, SP_UPPER_BASE_COUNT, (u_char)0);
/* Disable interrupts */
DPRINTF(("ad1848_close: disable intrs\n"));
ad_write(sc, SP_PIN_CONTROL,
ad_read(sc, SP_PIN_CONTROL) & ~INTERRUPT_ENABLE);
DPRINTF(("ad1848_close: disable capture and playback\n"));
r = ad_read(sc, SP_INTERFACE_CONFIG);
r &= ~(CAPTURE_ENABLE|PLAYBACK_ENABLE);
ad_write(sc, SP_INTERFACE_CONFIG, r);
#ifdef AUDIO_DEBUG
if (ad1848debug)
ad1848_dump_regs(sc);
#endif
}
/*
* Lower-level routines
*/
int
ad1848_commit_settings(addr)
void *addr;
{
struct ad1848_softc *sc = addr;
int timeout;
u_char fs;
int s;
if (!sc->need_commit)
return 0;
s = splaudio();
ad1848_mute_monitor(sc, 1);
ad_set_MCE(sc, 1); /* Enables changes to the format select reg */
fs = sc->speed_bits | (sc->format_bits << 5);
if (sc->channels == 2)
fs |= FMT_STEREO;
ad_write(sc, SP_CLOCK_DATA_FORMAT, fs);
/*
* If mode == 2 (CS4231), set I28 also. It's the capture format register.
*/
if (sc->mode == 2) {
/* Gravis Ultrasound MAX SDK sources says something about errata
* sheets, with the implication that these inb()s are necessary.
*/
(void)ADREAD(sc, AD1848_IDATA);
(void)ADREAD(sc, AD1848_IDATA);
/*
* Write to I8 starts resynchronization. Wait until it completes.
*/
timeout = 100000;
while (timeout > 0 && ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
timeout--;
ad_write(sc, CS_REC_FORMAT, fs);
/* Gravis Ultrasound MAX SDK sources says something about errata
* sheets, with the implication that these inb()s are necessary.
*/
(void)ADREAD(sc, AD1848_IDATA);
(void)ADREAD(sc, AD1848_IDATA);
/* Now wait for resync for capture side of the house */
}
/*
* Write to I8 starts resynchronization. Wait until it completes.
*/
timeout = 100000;
while (timeout > 0 && ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
timeout--;
if (ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
printf("ad1848_commit: Auto calibration timed out\n");
/*
* Starts the calibration process and
* enters playback mode after it.
*/
ad_set_MCE(sc, 0);
wait_for_calibration(sc);
ad1848_mute_monitor(sc, 0);
sc->sc_lastcc = -1;
splx(s);
sc->need_commit = 0;
return 0;
}
void
ad1848_reset(sc)
struct ad1848_softc *sc;
{
u_char r;
DPRINTF(("ad1848_reset\n"));
/* Clear the PEN and CEN bits */
r = ad_read(sc, SP_INTERFACE_CONFIG);
r &= ~(CAPTURE_ENABLE|PLAYBACK_ENABLE);
ad_write(sc, SP_INTERFACE_CONFIG, r);
if (sc->mode == 2) {
ADWRITE(sc, AD1848_IADDR, CS_IRQ_STATUS);
ADWRITE(sc, AD1848_IDATA, 0);
}
/* Clear interrupt status */
ADWRITE(sc, AD1848_STATUS, 0);
#ifdef AUDIO_DEBUG
if (ad1848debug)
ad1848_dump_regs(sc);
#endif
}
int
ad1848_set_speed(sc, argp)
struct ad1848_softc *sc;
u_long *argp;
{
/*
* The sampling speed is encoded in the least significant nible of I8. The
* LSB selects the clock source (0=24.576 MHz, 1=16.9344 MHz) and other
* three bits select the divisor (indirectly):
*
* The available speeds are in the following table. Keep the speeds in
* the increasing order.
*/
typedef struct {
int speed;
u_char bits;
} speed_struct;
u_long arg = *argp;
static speed_struct speed_table[] = {
{5510, (0 << 1) | 1},
{5510, (0 << 1) | 1},
{6620, (7 << 1) | 1},
{8000, (0 << 1) | 0},
{9600, (7 << 1) | 0},
{11025, (1 << 1) | 1},
{16000, (1 << 1) | 0},
{18900, (2 << 1) | 1},
{22050, (3 << 1) | 1},
{27420, (2 << 1) | 0},
{32000, (3 << 1) | 0},
{33075, (6 << 1) | 1},
{37800, (4 << 1) | 1},
{44100, (5 << 1) | 1},
{48000, (6 << 1) | 0}
};
int i, n, selected = -1;
n = sizeof(speed_table) / sizeof(speed_struct);
if (arg < speed_table[0].speed)
selected = 0;
if (arg > speed_table[n - 1].speed)
selected = n - 1;
for (i = 1 /*really*/ ; selected == -1 && i < n; i++)
if (speed_table[i].speed == arg)
selected = i;
else if (speed_table[i].speed > arg) {
int diff1, diff2;
diff1 = arg - speed_table[i - 1].speed;
diff2 = speed_table[i].speed - arg;
if (diff1 < diff2)
selected = i - 1;
else
selected = i;
}
if (selected == -1) {
printf("ad1848: Can't find speed???\n");
selected = 3;
}
sc->speed_bits = speed_table[selected].bits;
sc->need_commit = 1;
*argp = speed_table[selected].speed;
return (0);
}
/*
* Halt a DMA in progress.
*/
int
ad1848_halt_out_dma(addr)
void *addr;
{
struct ad1848_softc *sc = addr;
u_char reg;
DPRINTF(("ad1848: ad1848_halt_out_dma\n"));
reg = ad_read(sc, SP_INTERFACE_CONFIG);
ad_write(sc, SP_INTERFACE_CONFIG, (reg & ~PLAYBACK_ENABLE));
sc->sc_locked = 0;
return(0);
}
int
ad1848_halt_in_dma(addr)
void *addr;
{
struct ad1848_softc *sc = addr;
u_char reg;
DPRINTF(("ad1848: ad1848_halt_in_dma\n"));
reg = ad_read(sc, SP_INTERFACE_CONFIG);
ad_write(sc, SP_INTERFACE_CONFIG, (reg & ~CAPTURE_ENABLE));
sc->sc_locked = 0;
return(0);
}
int
ad1848_dma_init_input(addr, buf, cc)
void *addr;
void *buf;
int cc;
{
struct ad1848_softc *sc = addr;
sc->sc_recrun = DMARUNNING;
sc->sc_dma_flags = DMAMODE_READ | DMAMODE_LOOP;
sc->sc_dma_bp = buf;
sc->sc_dma_cnt = cc;
isa_dmastart(sc->sc_isa, sc->sc_recdrq, buf, cc, NULL,
sc->sc_dma_flags, BUS_DMA_NOWAIT);
DPRINTF(("ad1848_dma_init_input: %p %d\n", buf, cc));
return 0;
}
/*
* DMA input/output are called at splaudio().
*/
int
ad1848_dma_input(addr, p, cc, intr, arg)
void *addr;
void *p;
int cc;
void (*intr)(void *);
void *arg;
{
struct ad1848_softc *sc = addr;
u_char reg;
if (sc->sc_locked) {
DPRINTF(("ad1848_dma_input: locked\n"));
return 0;
}
#ifdef AUDIO_DEBUG
if (ad1848debug > 1)
printf("ad1848_dma_input: cc=%d %p (%p)\n", cc, intr, arg);
#endif
sc->sc_locked = 1;
sc->sc_intr = intr;
sc->sc_arg = arg;
switch (sc->sc_recrun) {
case NOTRUNNING:
sc->sc_dma_flags = DMAMODE_READ;
sc->sc_dma_bp = p;
sc->sc_dma_cnt = cc;
isa_dmastart(sc->sc_isa, sc->sc_recdrq, p, cc, NULL,
DMAMODE_READ, BUS_DMA_NOWAIT);
goto startpcm;
case DMARUNNING:
sc->sc_recrun = PCMRUNNING;
startpcm:
if (sc->precision == 16)
cc >>= 1;
if (sc->channels == 2)
cc >>= 1;
cc--;
if (sc->sc_lastcc != cc || sc->sc_mode != AUMODE_RECORD) {
ad_write(sc, SP_LOWER_BASE_COUNT, (u_char)(cc & 0xff));
ad_write(sc, SP_UPPER_BASE_COUNT, (u_char)((cc >> 8) & 0xff));
if (sc->mode == 2) {
ad_write(sc, CS_LOWER_REC_CNT, (u_char)(cc & 0xff));
ad_write(sc, CS_UPPER_REC_CNT, (u_char)((cc >> 8) & 0xff));
}
reg = ad_read(sc, SP_INTERFACE_CONFIG);
ad_write(sc, SP_INTERFACE_CONFIG, (CAPTURE_ENABLE|reg));
sc->sc_lastcc = cc;
sc->sc_mode = AUMODE_RECORD;
#ifdef AUDIO_DEBUG
if (ad1848debug > 1)
printf("ad1848_dma_input: started capture\n");
#endif
}
case PCMRUNNING:
break;
}
return 0;
}
int
ad1848_dma_init_output(addr, buf, cc)
void *addr;
void *buf;
int cc;
{
struct ad1848_softc *sc = addr;
sc->sc_playrun = DMARUNNING;
sc->sc_dma_flags = DMAMODE_WRITE | DMAMODE_LOOP;
sc->sc_dma_bp = buf;
sc->sc_dma_cnt = cc;
isa_dmastart(sc->sc_isa, sc->sc_drq, buf, cc, NULL,
sc->sc_dma_flags, BUS_DMA_NOWAIT);
DPRINTF(("ad1848_dma_init_output: %p %d\n", buf, cc));
return 0;
}
int
ad1848_dma_output(addr, p, cc, intr, arg)
void *addr;
void *p;
int cc;
void (*intr)(void *);
void *arg;
{
struct ad1848_softc *sc = addr;
u_char reg;
if (sc->sc_locked) {
DPRINTF(("ad1848_dma_output: locked\n"));
return 0;
}
#ifdef AUDIO_DEBUG
if (ad1848debug > 0)
printf("ad1848_dma_output: cc=%d at %p %p (%p)\n", cc, p, intr, arg);
#endif
sc->sc_locked = 1;
sc->sc_intr = intr;
sc->sc_arg = arg;
switch (sc->sc_playrun) {
case NOTRUNNING:
sc->sc_dma_flags = DMAMODE_WRITE;
sc->sc_dma_bp = p;
sc->sc_dma_cnt = cc;
isa_dmastart(sc->sc_isa, sc->sc_drq, p, cc, NULL,
DMAMODE_WRITE, BUS_DMA_NOWAIT);
goto startpcm;
case DMARUNNING:
sc->sc_playrun = PCMRUNNING;
startpcm:
if (sc->precision == 16)
cc >>= 1;
if (sc->channels == 2)
cc >>= 1;
cc--;
if (sc->sc_lastcc != cc || sc->sc_mode != AUMODE_PLAY) {
ad_write(sc, SP_LOWER_BASE_COUNT, (u_char)(cc & 0xff));
ad_write(sc, SP_UPPER_BASE_COUNT, (u_char)((cc >> 8) & 0xff));
reg = ad_read(sc, SP_INTERFACE_CONFIG);
ad_write(sc, SP_INTERFACE_CONFIG, (PLAYBACK_ENABLE|reg));
sc->sc_lastcc = cc;
sc->sc_mode = AUMODE_PLAY;
}
break;
case PCMRUNNING:
break;
}
return 0;
}
int
ad1848_intr(arg)
void *arg;
{
struct ad1848_softc *sc = arg;
int retval = 0;
u_char status;
/* Get intr status */
status = ADREAD(sc, AD1848_STATUS);
#ifdef AUDIO_DEBUG
if (ad1848debug > 1)
printf("ad1848_intr: intr=%p status=%x\n", sc->sc_intr, status);
#endif
sc->sc_locked = 0;
sc->sc_interrupts++;
/* Handle interrupt */
if (sc->sc_intr && (status & INTERRUPT_STATUS)) {
/* ACK DMA read because it may be in a bounce buffer */
/* XXX Do write to mask DMA ? */
if ((sc->sc_dma_flags & DMAMODE_READ) && sc->sc_recrun == NOTRUNNING)
isa_dmadone(sc->sc_isa, sc->sc_recdrq);
(*sc->sc_intr)(sc->sc_arg);
retval = 1;
}
/* clear interrupt */
if (status & INTERRUPT_STATUS)
ADWRITE(sc, AD1848_STATUS, 0);
return(retval);
}
void *
ad1848_malloc(addr, direction, size, pool, flags)
void *addr;
int direction;
size_t size;
int pool;
int flags;
{
struct ad1848_softc *sc = addr;
int drq;
if (sc->sc_mode == AUMODE_RECORD)
drq = sc->sc_recdrq == -1 ? sc->sc_drq : sc->sc_recdrq;
else
drq = sc->sc_drq;
return isa_malloc(sc->sc_isa, drq, size, pool, flags);
}
void
ad1848_free(addr, ptr, pool)
void *addr;
void *ptr;
int pool;
{
isa_free(ptr, pool);
}
size_t
ad1848_round(addr, direction, size)
void *addr;
int direction;
size_t size;
{
if (size > MAX_ISADMA)
size = MAX_ISADMA;
return size;
}
paddr_t
ad1848_mappage(addr, mem, off, prot)
void *addr;
void *mem;
off_t off;
int prot;
{
return isa_mappage(mem, off, prot);
}
int
ad1848_get_props(addr)
void *addr;
{
struct ad1848_softc *sc = addr;
return AUDIO_PROP_MMAP |
(sc->sc_drq != sc->sc_recdrq ? AUDIO_PROP_FULLDUPLEX : 0);
}
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