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/*-
* Copyright 2008 by Marco Trillo. 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 ``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 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: release/9.1.0/sys/dev/sound/macio/snapper.c 193694 2009-06-08 08:10:52Z ariff $
*/
/*-
* Copyright (c) 2002, 2003 Tsubai Masanari. 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* NetBSD: snapper.c,v 1.28 2008/05/16 03:49:54 macallan Exp
* Id: snapper.c,v 1.11 2002/10/31 17:42:13 tsubai Exp
*/
/*
* Apple Snapper audio.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/dbdma.h>
#include <machine/intr_machdep.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <machine/pio.h>
#include <sys/rman.h>
#include <dev/iicbus/iicbus.h>
#include <dev/iicbus/iiconf.h>
#include <dev/ofw/ofw_bus.h>
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
#include <dev/sound/pcm/sound.h>
#include "mixer_if.h"
extern kobj_class_t i2s_mixer_class;
extern device_t i2s_mixer;
struct snapper_softc
{
device_t sc_dev;
uint32_t sc_addr;
};
static int snapper_probe(device_t);
static int snapper_attach(device_t);
static int snapper_init(struct snd_mixer *m);
static int snapper_uninit(struct snd_mixer *m);
static int snapper_reinit(struct snd_mixer *m);
static int snapper_set(struct snd_mixer *m, unsigned dev, unsigned left,
unsigned right);
static u_int32_t snapper_setrecsrc(struct snd_mixer *m, u_int32_t src);
static device_method_t snapper_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, snapper_probe),
DEVMETHOD(device_attach, snapper_attach),
{ 0, 0 }
};
static driver_t snapper_driver = {
"snapper",
snapper_methods,
sizeof(struct snapper_softc)
};
static devclass_t snapper_devclass;
DRIVER_MODULE(snapper, iicbus, snapper_driver, snapper_devclass, 0, 0);
MODULE_VERSION(snapper, 1);
MODULE_DEPEND(snapper, iicbus, 1, 1, 1);
static kobj_method_t snapper_mixer_methods[] = {
KOBJMETHOD(mixer_init, snapper_init),
KOBJMETHOD(mixer_uninit, snapper_uninit),
KOBJMETHOD(mixer_reinit, snapper_reinit),
KOBJMETHOD(mixer_set, snapper_set),
KOBJMETHOD(mixer_setrecsrc, snapper_setrecsrc),
KOBJMETHOD_END
};
MIXER_DECLARE(snapper_mixer);
#define SNAPPER_IICADDR 0x6a /* Hard-coded I2C slave addr */
/* Snapper (Texas Instruments TAS3004) registers. */
#define SNAPPER_MCR1 0x01 /* Main control register 1 (1byte) */
#define SNAPPER_DRC 0x02 /* Dynamic range compression (6bytes) */
#define SNAPPER_VOLUME 0x04 /* Volume (6bytes) */
#define SNAPPER_TREBLE 0x05 /* Treble control (1byte) */
#define SNAPPER_BASS 0x06 /* Bass control (1byte) */
#define SNAPPER_MIXER_L 0x07 /* Mixer left gain (9bytes) */
#define SNAPPER_MIXER_R 0x08 /* Mixer right gain (9bytes) */
#define SNAPPER_LB0 0x0a /* Left biquad 0 (15bytes) */
#define SNAPPER_LB1 0x0b /* Left biquad 1 (15bytes) */
#define SNAPPER_LB2 0x0c /* Left biquad 2 (15bytes) */
#define SNAPPER_LB3 0x0d /* Left biquad 3 (15bytes) */
#define SNAPPER_LB4 0x0e /* Left biquad 4 (15bytes) */
#define SNAPPER_LB5 0x0f /* Left biquad 5 (15bytes) */
#define SNAPPER_LB6 0x10 /* Left biquad 6 (15bytes) */
#define SNAPPER_RB0 0x13 /* Right biquad 0 (15bytes) */
#define SNAPPER_RB1 0x14 /* Right biquad 1 (15bytes) */
#define SNAPPER_RB2 0x15 /* Right biquad 2 (15bytes) */
#define SNAPPER_RB3 0x16 /* Right biquad 3 (15bytes) */
#define SNAPPER_RB4 0x17 /* Right biquad 4 (15bytes) */
#define SNAPPER_RB5 0x18 /* Right biquad 5 (15bytes) */
#define SNAPPER_RB6 0x19 /* Right biquad 6 (15bytes) */
#define SNAPPER_LLB 0x21 /* Left loudness biquad (15bytes) */
#define SNAPPER_RLB 0x22 /* Right loudness biquad (15bytes) */
#define SNAPPER_LLB_GAIN 0x23 /* Left loudness biquad gain (3bytes) */
#define SNAPPER_RLB_GAIN 0x24 /* Right loudness biquad gain (3bytes) */
#define SNAPPER_ACR 0x40 /* Analog control register (1byte) */
#define SNAPPER_MCR2 0x43 /* Main control register 2 (1byte) */
#define SNAPPER_MCR1_FL 0x80 /* Fast load */
#define SNAPPER_MCR1_SC 0x40 /* SCLK frequency */
#define SNAPPER_MCR1_SC_32 0x00 /* 32fs */
#define SNAPPER_MCR1_SC_64 0x40 /* 64fs */
#define SNAPPER_MCR1_SM 0x30 /* Output serial port mode */
#define SNAPPER_MCR1_SM_L 0x00 /* Left justified */
#define SNAPPER_MCR1_SM_R 0x10 /* Right justified */
#define SNAPPER_MCR1_SM_I2S 0x20 /* I2S */
#define SNAPPER_MCR1_W 0x03 /* Serial port word length */
#define SNAPPER_MCR1_W_16 0x00 /* 16 bit */
#define SNAPPER_MCR1_W_18 0x01 /* 18 bit */
#define SNAPPER_MCR1_W_20 0x02 /* 20 bit */
#define SNAPPER_MCR1_W_24 0x03 /* 20 bit */
#define SNAPPER_MCR2_DL 0x80 /* Download */
#define SNAPPER_MCR2_AP 0x02 /* All pass mode */
#define SNAPPER_ACR_ADM 0x80 /* ADC output mode */
#define SNAPPER_ACR_LRB 0x40 /* Select B input */
#define SNAPPER_ACR_DM 0x0c /* De-emphasis control */
#define SNAPPER_ACR_DM_OFF 0x00 /* off */
#define SNAPPER_ACR_DM_48 0x04 /* fs = 48kHz */
#define SNAPPER_ACR_DM_44 0x08 /* fs = 44.1kHz */
#define SNAPPER_ACR_INP 0x02 /* Analog input select */
#define SNAPPER_ACR_INP_A 0x00 /* A */
#define SNAPPER_ACR_INP_B 0x02 /* B */
#define SNAPPER_ACR_APD 0x01 /* Analog power down */
struct snapper_reg {
u_char MCR1[1];
u_char DRC[6];
u_char VOLUME[6];
u_char TREBLE[1];
u_char BASS[1];
u_char MIXER_L[9];
u_char MIXER_R[9];
u_char LB0[15];
u_char LB1[15];
u_char LB2[15];
u_char LB3[15];
u_char LB4[15];
u_char LB5[15];
u_char LB6[15];
u_char RB0[15];
u_char RB1[15];
u_char RB2[15];
u_char RB3[15];
u_char RB4[15];
u_char RB5[15];
u_char RB6[15];
u_char LLB[15];
u_char RLB[15];
u_char LLB_GAIN[3];
u_char RLB_GAIN[3];
u_char ACR[1];
u_char MCR2[1];
};
static const struct snapper_reg snapper_initdata = {
{ SNAPPER_MCR1_SC_64 | SNAPPER_MCR1_SM_I2S |
SNAPPER_MCR1_W_16 }, /* MCR1 */
{ 1, 0, 0, 0, 0, 0 }, /* DRC */
{ 0, 0, 0, 0, 0, 0 }, /* VOLUME */
{ 0x72 }, /* TREBLE */
{ 0x72 }, /* BASS */
{ 0x10, 0x00, 0x00, 0, 0, 0, 0, 0, 0 }, /* MIXER_L */
{ 0x10, 0x00, 0x00, 0, 0, 0, 0, 0, 0 }, /* MIXER_R */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* BIQUAD */
{ 0, 0, 0 }, /* LLB_GAIN */
{ 0, 0, 0 }, /* RLB_GAIN */
{ SNAPPER_ACR_ADM | SNAPPER_ACR_LRB | SNAPPER_ACR_INP_B },/* ACR */
{ SNAPPER_MCR2_AP } /* MCR2 */
};
static const char snapper_regsize[] = {
0, /* 0x00 */
sizeof snapper_initdata.MCR1, /* 0x01 */
sizeof snapper_initdata.DRC, /* 0x02 */
0, /* 0x03 */
sizeof snapper_initdata.VOLUME, /* 0x04 */
sizeof snapper_initdata.TREBLE, /* 0x05 */
sizeof snapper_initdata.BASS, /* 0x06 */
sizeof snapper_initdata.MIXER_L, /* 0x07 */
sizeof snapper_initdata.MIXER_R, /* 0x08 */
0, /* 0x09 */
sizeof snapper_initdata.LB0, /* 0x0a */
sizeof snapper_initdata.LB1, /* 0x0b */
sizeof snapper_initdata.LB2, /* 0x0c */
sizeof snapper_initdata.LB3, /* 0x0d */
sizeof snapper_initdata.LB4, /* 0x0e */
sizeof snapper_initdata.LB5, /* 0x0f */
sizeof snapper_initdata.LB6, /* 0x10 */
0, /* 0x11 */
0, /* 0x12 */
sizeof snapper_initdata.RB0, /* 0x13 */
sizeof snapper_initdata.RB1, /* 0x14 */
sizeof snapper_initdata.RB2, /* 0x15 */
sizeof snapper_initdata.RB3, /* 0x16 */
sizeof snapper_initdata.RB4, /* 0x17 */
sizeof snapper_initdata.RB5, /* 0x18 */
sizeof snapper_initdata.RB6, /* 0x19 */
0,0,0,0, 0,0,
0, /* 0x20 */
sizeof snapper_initdata.LLB, /* 0x21 */
sizeof snapper_initdata.RLB, /* 0x22 */
sizeof snapper_initdata.LLB_GAIN, /* 0x23 */
sizeof snapper_initdata.RLB_GAIN, /* 0x24 */
0,0,0,0, 0,0,0,0, 0,0,0,
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0,
sizeof snapper_initdata.ACR, /* 0x40 */
0, /* 0x41 */
0, /* 0x42 */
sizeof snapper_initdata.MCR2 /* 0x43 */
};
/* dB = 20 * log (x) table. */
static u_int snapper_volume_table[100] = {
0x00000148, 0x0000015C, 0x00000171, 0x00000186, // -46.0, -45.5, -45.0, -44.5,
0x0000019E, 0x000001B6, 0x000001D0, 0x000001EB, // -44.0, -43.5, -43.0, -42.5,
0x00000209, 0x00000227, 0x00000248, 0x0000026B, // -42.0, -41.5, -41.0, -40.5,
0x0000028F, 0x000002B6, 0x000002DF, 0x0000030B, // -40.0, -39.5, -39.0, -38.5,
0x00000339, 0x0000036A, 0x0000039E, 0x000003D5, // -38.0, -37.5, -37.0, -36.5,
0x0000040F, 0x0000044C, 0x0000048D, 0x000004D2, // -36.0, -35.5, -35.0, -34.5,
0x0000051C, 0x00000569, 0x000005BB, 0x00000612, // -34.0, -33.5, -33.0, -32.5,
0x0000066E, 0x000006D0, 0x00000737, 0x000007A5, // -32.0, -31.5, -31.0, -30.5,
0x00000818, 0x00000893, 0x00000915, 0x0000099F, // -30.0, -29.5, -29.0, -28.5,
0x00000A31, 0x00000ACC, 0x00000B6F, 0x00000C1D, // -28.0, -27.5, -27.0, -26.5,
0x00000CD5, 0x00000D97, 0x00000E65, 0x00000F40, // -26.0, -25.5, -25.0, -24.5,
0x00001027, 0x0000111C, 0x00001220, 0x00001333, // -24.0, -23.5, -23.0, -22.5,
0x00001456, 0x0000158A, 0x000016D1, 0x0000182B, // -22.0, -21.5, -21.0, -20.5,
0x0000199A, 0x00001B1E, 0x00001CB9, 0x00001E6D, // -20.0, -19.5, -19.0, -18.5,
0x0000203A, 0x00002223, 0x00002429, 0x0000264E, // -18.0, -17.5, -17.0, -16.5,
0x00002893, 0x00002AFA, 0x00002D86, 0x00003039, // -16.0, -15.5, -15.0, -14.5,
0x00003314, 0x0000361B, 0x00003950, 0x00003CB5, // -14.0, -13.5, -13.0, -12.5,
0x0000404E, 0x0000441D, 0x00004827, 0x00004C6D, // -12.0, -11.5, -11.0, -10.5,
0x000050F4, 0x000055C0, 0x00005AD5, 0x00006037, // -10.0, -9.5, -9.0, -8.5,
0x000065EA, 0x00006BF4, 0x0000725A, 0x00007920, // -8.0, -7.5, -7.0, -6.5,
0x0000804E, 0x000087EF, 0x00008FF6, 0x0000987D, // -6.0, -5.5, -5.0, -4.5,
0x0000A186, 0x0000AB19, 0x0000B53C, 0x0000BFF9, // -4.0, -3.5, -3.0, -2.5,
0x0000CB59, 0x0000D766, 0x0000E429, 0x0000F1AE, // -2.0, -1.5, -1.0, -0.5,
0x00010000, 0x00010F2B, 0x00011F3D, 0x00013042, // 0.0, +0.5, +1.0, +1.5,
0x00014249, 0x00015562, 0x0001699C, 0x00017F09 // 2.0, +2.5, +3.0, +3.5,
};
static int
snapper_write(struct snapper_softc *sc, uint8_t reg, const void *data)
{
u_int size;
uint8_t buf[16];
struct iic_msg msg[] = {
{ sc->sc_addr, IIC_M_WR, 0, buf }
};
KASSERT(reg < sizeof(snapper_regsize), ("bad reg"));
size = snapper_regsize[reg];
msg[0].len = size + 1;
buf[0] = reg;
memcpy(&buf[1], data, size);
iicbus_transfer(sc->sc_dev, msg, 1);
return (0);
}
static int
snapper_probe(device_t dev)
{
const char *name, *compat;
name = ofw_bus_get_name(dev);
if (name == NULL)
return (ENXIO);
if (strcmp(name, "deq") == 0) {
if (iicbus_get_addr(dev) != SNAPPER_IICADDR)
return (ENXIO);
} else if (strcmp(name, "codec") == 0) {
compat = ofw_bus_get_compat(dev);
if (compat == NULL || strcmp(compat, "tas3004") != 0)
return (ENXIO);
} else {
return (ENXIO);
}
device_set_desc(dev, "Texas Instruments TAS3004 Audio Codec");
return (0);
}
static int
snapper_attach(device_t dev)
{
struct snapper_softc *sc;
sc = device_get_softc(dev);
sc->sc_dev = dev;
sc->sc_addr = iicbus_get_addr(dev);
i2s_mixer_class = &snapper_mixer_class;
i2s_mixer = dev;
return (0);
}
static int
snapper_init(struct snd_mixer *m)
{
struct snapper_softc *sc;
u_int x = 0;
sc = device_get_softc(mix_getdevinfo(m));
snapper_write(sc, SNAPPER_LB0, snapper_initdata.LB0);
snapper_write(sc, SNAPPER_LB1, snapper_initdata.LB1);
snapper_write(sc, SNAPPER_LB2, snapper_initdata.LB2);
snapper_write(sc, SNAPPER_LB3, snapper_initdata.LB3);
snapper_write(sc, SNAPPER_LB4, snapper_initdata.LB4);
snapper_write(sc, SNAPPER_LB5, snapper_initdata.LB5);
snapper_write(sc, SNAPPER_LB6, snapper_initdata.LB6);
snapper_write(sc, SNAPPER_RB0, snapper_initdata.RB0);
snapper_write(sc, SNAPPER_RB1, snapper_initdata.RB1);
snapper_write(sc, SNAPPER_RB1, snapper_initdata.RB1);
snapper_write(sc, SNAPPER_RB2, snapper_initdata.RB2);
snapper_write(sc, SNAPPER_RB3, snapper_initdata.RB3);
snapper_write(sc, SNAPPER_RB4, snapper_initdata.RB4);
snapper_write(sc, SNAPPER_RB5, snapper_initdata.RB5);
snapper_write(sc, SNAPPER_RB6, snapper_initdata.RB6);
snapper_write(sc, SNAPPER_MCR1, snapper_initdata.MCR1);
snapper_write(sc, SNAPPER_MCR2, snapper_initdata.MCR2);
snapper_write(sc, SNAPPER_DRC, snapper_initdata.DRC);
snapper_write(sc, SNAPPER_VOLUME, snapper_initdata.VOLUME);
snapper_write(sc, SNAPPER_TREBLE, snapper_initdata.TREBLE);
snapper_write(sc, SNAPPER_BASS, snapper_initdata.BASS);
snapper_write(sc, SNAPPER_MIXER_L, snapper_initdata.MIXER_L);
snapper_write(sc, SNAPPER_MIXER_R, snapper_initdata.MIXER_R);
snapper_write(sc, SNAPPER_LLB, snapper_initdata.LLB);
snapper_write(sc, SNAPPER_RLB, snapper_initdata.RLB);
snapper_write(sc, SNAPPER_LLB_GAIN, snapper_initdata.LLB_GAIN);
snapper_write(sc, SNAPPER_RLB_GAIN, snapper_initdata.RLB_GAIN);
snapper_write(sc, SNAPPER_ACR, snapper_initdata.ACR);
x |= SOUND_MASK_VOLUME;
mix_setdevs(m, x);
return (0);
}
static int
snapper_uninit(struct snd_mixer *m)
{
return (0);
}
static int
snapper_reinit(struct snd_mixer *m)
{
return (0);
}
static int
snapper_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
{
struct snapper_softc *sc;
struct mtx *mixer_lock;
int locked;
u_int l, r;
u_char reg[6];
sc = device_get_softc(mix_getdevinfo(m));
mixer_lock = mixer_get_lock(m);
locked = mtx_owned(mixer_lock);
if (left > 100 || right > 100)
return (0);
l = (left == 0) ? 0 : snapper_volume_table[left - 1];
r = (right == 0) ? 0 : snapper_volume_table[right - 1];
switch (dev) {
case SOUND_MIXER_VOLUME:
reg[0] = (l & 0xff0000) >> 16;
reg[1] = (l & 0x00ff00) >> 8;
reg[2] = l & 0x0000ff;
reg[3] = (r & 0xff0000) >> 16;
reg[4] = (r & 0x00ff00) >> 8;
reg[5] = r & 0x0000ff;
/*
* We need to unlock the mixer lock because iicbus_transfer()
* may sleep. The mixer lock itself is unnecessary here
* because it is meant to serialize hardware access, which
* is taken care of by the I2C layer, so this is safe.
*/
if (locked)
mtx_unlock(mixer_lock);
snapper_write(sc, SNAPPER_VOLUME, reg);
if (locked)
mtx_lock(mixer_lock);
return (left | (right << 8));
}
return (0);
}
static u_int32_t
snapper_setrecsrc(struct snd_mixer *m, u_int32_t src)
{
return (0);
}