364 lines
10 KiB
C
364 lines
10 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* Routines for control of the TEA6330T circuit via i2c bus
|
||
|
|
* Sound fader control circuit for car radios by Philips Semiconductors
|
||
|
|
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <sound/core.h>
|
||
|
|
#include <sound/control.h>
|
||
|
|
#include <sound/tea6330t.h>
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
|
||
|
|
MODULE_DESCRIPTION("Routines for control of the TEA6330T circuit via i2c bus");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
#define TEA6330T_ADDR (0x80>>1) /* fixed address */
|
||
|
|
|
||
|
|
#define TEA6330T_SADDR_VOLUME_LEFT 0x00 /* volume left */
|
||
|
|
#define TEA6330T_SADDR_VOLUME_RIGHT 0x01 /* volume right */
|
||
|
|
#define TEA6330T_SADDR_BASS 0x02 /* bass control */
|
||
|
|
#define TEA6330T_SADDR_TREBLE 0x03 /* treble control */
|
||
|
|
#define TEA6330T_SADDR_FADER 0x04 /* fader control */
|
||
|
|
#define TEA6330T_MFN 0x20 /* mute control for selected channels */
|
||
|
|
#define TEA6330T_FCH 0x10 /* select fader channels - front or rear */
|
||
|
|
#define TEA6330T_SADDR_AUDIO_SWITCH 0x05 /* audio switch */
|
||
|
|
#define TEA6330T_GMU 0x80 /* mute control, general mute */
|
||
|
|
#define TEA6330T_EQN 0x40 /* equalizer switchover (0=equalizer-on) */
|
||
|
|
|
||
|
|
|
||
|
|
struct tea6330t {
|
||
|
|
struct snd_i2c_device *device;
|
||
|
|
struct snd_i2c_bus *bus;
|
||
|
|
int equalizer;
|
||
|
|
int fader;
|
||
|
|
unsigned char regs[8];
|
||
|
|
unsigned char mleft, mright;
|
||
|
|
unsigned char bass, treble;
|
||
|
|
unsigned char max_bass, max_treble;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
int snd_tea6330t_detect(struct snd_i2c_bus *bus, int equalizer)
|
||
|
|
{
|
||
|
|
int res;
|
||
|
|
|
||
|
|
snd_i2c_lock(bus);
|
||
|
|
res = snd_i2c_probeaddr(bus, TEA6330T_ADDR);
|
||
|
|
snd_i2c_unlock(bus);
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static void snd_tea6330t_set(struct tea6330t *tea,
|
||
|
|
unsigned char addr, unsigned char value)
|
||
|
|
{
|
||
|
|
#if 0
|
||
|
|
printk(KERN_DEBUG "set - 0x%x/0x%x\n", addr, value);
|
||
|
|
#endif
|
||
|
|
snd_i2c_write(tea->bus, TEA6330T_ADDR, addr, value, 1);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define TEA6330T_MASTER_VOLUME(xname, xindex) \
|
||
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
|
||
|
|
.info = snd_tea6330t_info_master_volume, \
|
||
|
|
.get = snd_tea6330t_get_master_volume, .put = snd_tea6330t_put_master_volume }
|
||
|
|
|
||
|
|
static int snd_tea6330t_info_master_volume(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_info *uinfo)
|
||
|
|
{
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
||
|
|
uinfo->count = 2;
|
||
|
|
uinfo->value.integer.min = 0;
|
||
|
|
uinfo->value.integer.max = 43;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_get_master_volume(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
|
||
|
|
snd_i2c_lock(tea->bus);
|
||
|
|
ucontrol->value.integer.value[0] = tea->mleft - 0x14;
|
||
|
|
ucontrol->value.integer.value[1] = tea->mright - 0x14;
|
||
|
|
snd_i2c_unlock(tea->bus);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_put_master_volume(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
int change, count, err;
|
||
|
|
unsigned char bytes[3];
|
||
|
|
unsigned char val1, val2;
|
||
|
|
|
||
|
|
val1 = (ucontrol->value.integer.value[0] % 44) + 0x14;
|
||
|
|
val2 = (ucontrol->value.integer.value[1] % 44) + 0x14;
|
||
|
|
snd_i2c_lock(tea->bus);
|
||
|
|
change = val1 != tea->mleft || val2 != tea->mright;
|
||
|
|
tea->mleft = val1;
|
||
|
|
tea->mright = val2;
|
||
|
|
count = 0;
|
||
|
|
if (tea->regs[TEA6330T_SADDR_VOLUME_LEFT] != 0) {
|
||
|
|
bytes[count++] = TEA6330T_SADDR_VOLUME_LEFT;
|
||
|
|
bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = tea->mleft;
|
||
|
|
}
|
||
|
|
if (tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] != 0) {
|
||
|
|
if (count == 0)
|
||
|
|
bytes[count++] = TEA6330T_SADDR_VOLUME_RIGHT;
|
||
|
|
bytes[count++] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = tea->mright;
|
||
|
|
}
|
||
|
|
if (count > 0) {
|
||
|
|
err = snd_i2c_sendbytes(tea->device, bytes, count);
|
||
|
|
if (err < 0)
|
||
|
|
change = err;
|
||
|
|
}
|
||
|
|
snd_i2c_unlock(tea->bus);
|
||
|
|
return change;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define TEA6330T_MASTER_SWITCH(xname, xindex) \
|
||
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
|
||
|
|
.info = snd_tea6330t_info_master_switch, \
|
||
|
|
.get = snd_tea6330t_get_master_switch, .put = snd_tea6330t_put_master_switch }
|
||
|
|
|
||
|
|
#define snd_tea6330t_info_master_switch snd_ctl_boolean_stereo_info
|
||
|
|
|
||
|
|
static int snd_tea6330t_get_master_switch(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
|
||
|
|
snd_i2c_lock(tea->bus);
|
||
|
|
ucontrol->value.integer.value[0] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1;
|
||
|
|
ucontrol->value.integer.value[1] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1;
|
||
|
|
snd_i2c_unlock(tea->bus);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_put_master_switch(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
int change, err;
|
||
|
|
unsigned char bytes[3];
|
||
|
|
unsigned char oval1, oval2, val1, val2;
|
||
|
|
|
||
|
|
val1 = ucontrol->value.integer.value[0] & 1;
|
||
|
|
val2 = ucontrol->value.integer.value[1] & 1;
|
||
|
|
snd_i2c_lock(tea->bus);
|
||
|
|
oval1 = tea->regs[TEA6330T_SADDR_VOLUME_LEFT] == 0 ? 0 : 1;
|
||
|
|
oval2 = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] == 0 ? 0 : 1;
|
||
|
|
change = val1 != oval1 || val2 != oval2;
|
||
|
|
tea->regs[TEA6330T_SADDR_VOLUME_LEFT] = val1 ? tea->mleft : 0;
|
||
|
|
tea->regs[TEA6330T_SADDR_VOLUME_RIGHT] = val2 ? tea->mright : 0;
|
||
|
|
bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
|
||
|
|
bytes[1] = tea->regs[TEA6330T_SADDR_VOLUME_LEFT];
|
||
|
|
bytes[2] = tea->regs[TEA6330T_SADDR_VOLUME_RIGHT];
|
||
|
|
err = snd_i2c_sendbytes(tea->device, bytes, 3);
|
||
|
|
if (err < 0)
|
||
|
|
change = err;
|
||
|
|
snd_i2c_unlock(tea->bus);
|
||
|
|
return change;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define TEA6330T_BASS(xname, xindex) \
|
||
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
|
||
|
|
.info = snd_tea6330t_info_bass, \
|
||
|
|
.get = snd_tea6330t_get_bass, .put = snd_tea6330t_put_bass }
|
||
|
|
|
||
|
|
static int snd_tea6330t_info_bass(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_info *uinfo)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
||
|
|
uinfo->count = 1;
|
||
|
|
uinfo->value.integer.min = 0;
|
||
|
|
uinfo->value.integer.max = tea->max_bass;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_get_bass(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
|
||
|
|
ucontrol->value.integer.value[0] = tea->bass;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_put_bass(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
int change, err;
|
||
|
|
unsigned char bytes[2];
|
||
|
|
unsigned char val1;
|
||
|
|
|
||
|
|
val1 = ucontrol->value.integer.value[0] % (tea->max_bass + 1);
|
||
|
|
snd_i2c_lock(tea->bus);
|
||
|
|
tea->bass = val1;
|
||
|
|
val1 += tea->equalizer ? 7 : 3;
|
||
|
|
change = tea->regs[TEA6330T_SADDR_BASS] != val1;
|
||
|
|
bytes[0] = TEA6330T_SADDR_BASS;
|
||
|
|
bytes[1] = tea->regs[TEA6330T_SADDR_BASS] = val1;
|
||
|
|
err = snd_i2c_sendbytes(tea->device, bytes, 2);
|
||
|
|
if (err < 0)
|
||
|
|
change = err;
|
||
|
|
snd_i2c_unlock(tea->bus);
|
||
|
|
return change;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define TEA6330T_TREBLE(xname, xindex) \
|
||
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
|
||
|
|
.info = snd_tea6330t_info_treble, \
|
||
|
|
.get = snd_tea6330t_get_treble, .put = snd_tea6330t_put_treble }
|
||
|
|
|
||
|
|
static int snd_tea6330t_info_treble(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_info *uinfo)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
||
|
|
uinfo->count = 1;
|
||
|
|
uinfo->value.integer.min = 0;
|
||
|
|
uinfo->value.integer.max = tea->max_treble;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_get_treble(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
|
||
|
|
ucontrol->value.integer.value[0] = tea->treble;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_tea6330t_put_treble(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct tea6330t *tea = snd_kcontrol_chip(kcontrol);
|
||
|
|
int change, err;
|
||
|
|
unsigned char bytes[2];
|
||
|
|
unsigned char val1;
|
||
|
|
|
||
|
|
val1 = ucontrol->value.integer.value[0] % (tea->max_treble + 1);
|
||
|
|
snd_i2c_lock(tea->bus);
|
||
|
|
tea->treble = val1;
|
||
|
|
val1 += 3;
|
||
|
|
change = tea->regs[TEA6330T_SADDR_TREBLE] != val1;
|
||
|
|
bytes[0] = TEA6330T_SADDR_TREBLE;
|
||
|
|
bytes[1] = tea->regs[TEA6330T_SADDR_TREBLE] = val1;
|
||
|
|
err = snd_i2c_sendbytes(tea->device, bytes, 2);
|
||
|
|
if (err < 0)
|
||
|
|
change = err;
|
||
|
|
snd_i2c_unlock(tea->bus);
|
||
|
|
return change;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_kcontrol_new snd_tea6330t_controls[] = {
|
||
|
|
TEA6330T_MASTER_SWITCH("Master Playback Switch", 0),
|
||
|
|
TEA6330T_MASTER_VOLUME("Master Playback Volume", 0),
|
||
|
|
TEA6330T_BASS("Tone Control - Bass", 0),
|
||
|
|
TEA6330T_TREBLE("Tone Control - Treble", 0)
|
||
|
|
};
|
||
|
|
|
||
|
|
static void snd_tea6330_free(struct snd_i2c_device *device)
|
||
|
|
{
|
||
|
|
kfree(device->private_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_tea6330t_update_mixer(struct snd_card *card,
|
||
|
|
struct snd_i2c_bus *bus,
|
||
|
|
int equalizer, int fader)
|
||
|
|
{
|
||
|
|
struct snd_i2c_device *device;
|
||
|
|
struct tea6330t *tea;
|
||
|
|
const struct snd_kcontrol_new *knew;
|
||
|
|
unsigned int idx;
|
||
|
|
int err;
|
||
|
|
u8 default_treble, default_bass;
|
||
|
|
unsigned char bytes[7];
|
||
|
|
|
||
|
|
tea = kzalloc(sizeof(*tea), GFP_KERNEL);
|
||
|
|
if (tea == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
err = snd_i2c_device_create(bus, "TEA6330T", TEA6330T_ADDR, &device);
|
||
|
|
if (err < 0) {
|
||
|
|
kfree(tea);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
tea->device = device;
|
||
|
|
tea->bus = bus;
|
||
|
|
tea->equalizer = equalizer;
|
||
|
|
tea->fader = fader;
|
||
|
|
device->private_data = tea;
|
||
|
|
device->private_free = snd_tea6330_free;
|
||
|
|
|
||
|
|
snd_i2c_lock(bus);
|
||
|
|
|
||
|
|
/* turn fader off and handle equalizer */
|
||
|
|
tea->regs[TEA6330T_SADDR_FADER] = 0x3f;
|
||
|
|
tea->regs[TEA6330T_SADDR_AUDIO_SWITCH] = equalizer ? 0 : TEA6330T_EQN;
|
||
|
|
/* initialize mixer */
|
||
|
|
if (!tea->equalizer) {
|
||
|
|
tea->max_bass = 9;
|
||
|
|
tea->max_treble = 8;
|
||
|
|
default_bass = 3 + 4;
|
||
|
|
tea->bass = 4;
|
||
|
|
default_treble = 3 + 4;
|
||
|
|
tea->treble = 4;
|
||
|
|
} else {
|
||
|
|
tea->max_bass = 5;
|
||
|
|
tea->max_treble = 0;
|
||
|
|
default_bass = 7 + 4;
|
||
|
|
tea->bass = 4;
|
||
|
|
default_treble = 3;
|
||
|
|
tea->treble = 0;
|
||
|
|
}
|
||
|
|
tea->mleft = tea->mright = 0x14;
|
||
|
|
tea->regs[TEA6330T_SADDR_BASS] = default_bass;
|
||
|
|
tea->regs[TEA6330T_SADDR_TREBLE] = default_treble;
|
||
|
|
|
||
|
|
/* compose I2C message and put the hardware to initial state */
|
||
|
|
bytes[0] = TEA6330T_SADDR_VOLUME_LEFT;
|
||
|
|
for (idx = 0; idx < 6; idx++)
|
||
|
|
bytes[idx+1] = tea->regs[idx];
|
||
|
|
err = snd_i2c_sendbytes(device, bytes, 7);
|
||
|
|
if (err < 0)
|
||
|
|
goto __error;
|
||
|
|
|
||
|
|
strcat(card->mixername, ",TEA6330T");
|
||
|
|
err = snd_component_add(card, "TEA6330T");
|
||
|
|
if (err < 0)
|
||
|
|
goto __error;
|
||
|
|
|
||
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_tea6330t_controls); idx++) {
|
||
|
|
knew = &snd_tea6330t_controls[idx];
|
||
|
|
if (tea->treble == 0 && !strcmp(knew->name, "Tone Control - Treble"))
|
||
|
|
continue;
|
||
|
|
err = snd_ctl_add(card, snd_ctl_new1(knew, tea));
|
||
|
|
if (err < 0)
|
||
|
|
goto __error;
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_i2c_unlock(bus);
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
__error:
|
||
|
|
snd_i2c_unlock(bus);
|
||
|
|
snd_i2c_device_free(device);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
EXPORT_SYMBOL(snd_tea6330t_detect);
|
||
|
|
EXPORT_SYMBOL(snd_tea6330t_update_mixer);
|