// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Linux driver for TerraTec DMX 6Fire USB
*
* Mixer control
*
* Author: Torsten Schenk <torsten.schenk@zoho.com>
* Created: Jan 01, 2011
* Copyright: (C) Torsten Schenk
*
* Thanks to:
* - Holger Ruckdeschel: he found out how to control individual channel
* volumes and introduced mute switch
*/
#include <linux/interrupt.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "control.h"
#include "comm.h"
#include "chip.h"
static const char * const opt_coax_texts[2 ] = { "Optical" , "Coax" };
static const char * const line_phono_texts[2 ] = { "Line" , "Phono" };
/*
* data that needs to be sent to device. sets up card internal stuff.
* values dumped from windows driver and filtered by trial'n'error.
*/
static const struct {
u8 type;
u8 reg;
u8 value;
}
init_data[] = {
{ 0 x22, 0 x00, 0 x00 }, { 0 x20, 0 x00, 0 x08 }, { 0 x22, 0 x01, 0 x01 },
{ 0 x20, 0 x01, 0 x08 }, { 0 x22, 0 x02, 0 x00 }, { 0 x20, 0 x02, 0 x08 },
{ 0 x22, 0 x03, 0 x00 }, { 0 x20, 0 x03, 0 x08 }, { 0 x22, 0 x04, 0 x00 },
{ 0 x20, 0 x04, 0 x08 }, { 0 x22, 0 x05, 0 x01 }, { 0 x20, 0 x05, 0 x08 },
{ 0 x22, 0 x04, 0 x01 }, { 0 x12, 0 x04, 0 x00 }, { 0 x12, 0 x05, 0 x00 },
{ 0 x12, 0 x0d, 0 x38 }, { 0 x12, 0 x21, 0 x82 }, { 0 x12, 0 x22, 0 x80 },
{ 0 x12, 0 x23, 0 x00 }, { 0 x12, 0 x06, 0 x02 }, { 0 x12, 0 x03, 0 x00 },
{ 0 x12, 0 x02, 0 x00 }, { 0 x22, 0 x03, 0 x01 },
{ 0 } /* TERMINATING ENTRY */
};
static const int rates_altsetting[] = { 1 , 1 , 2 , 2 , 3 , 3 };
/* values to write to soundcard register for all samplerates */
static const u16 rates_6fire_vl[] = {0 x00, 0 x01, 0 x00, 0 x01, 0 x00, 0 x01};
static const u16 rates_6fire_vh[] = {0 x11, 0 x11, 0 x10, 0 x10, 0 x00, 0 x00};
static DECLARE_TLV_DB_MINMAX(tlv_output, -9000 , 0 );
static DECLARE_TLV_DB_MINMAX(tlv_input, -1500 , 1500 );
enum {
DIGITAL_THRU_ONLY_SAMPLERATE = 3
};
static void usb6fire_control_output_vol_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
int i;
if (comm_rt)
for (i = 0 ; i < 6 ; i++)
if (!(rt->ovol_updated & (1 << i))) {
comm_rt->write8(comm_rt, 0 x12, 0 x0f + i,
180 - rt->output_vol[i]);
rt->ovol_updated |= 1 << i;
}
}
static void usb6fire_control_output_mute_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
if (comm_rt)
comm_rt->write8(comm_rt, 0 x12, 0 x0e, ~rt->output_mute);
}
static void usb6fire_control_input_vol_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
int i;
if (comm_rt)
for (i = 0 ; i < 2 ; i++)
if (!(rt->ivol_updated & (1 << i))) {
comm_rt->write8(comm_rt, 0 x12, 0 x1c + i,
rt->input_vol[i] & 0 x3f);
rt->ivol_updated |= 1 << i;
}
}
static void usb6fire_control_line_phono_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
if (comm_rt) {
comm_rt->write8(comm_rt, 0 x22, 0 x02, rt->line_phono_switch);
comm_rt->write8(comm_rt, 0 x21, 0 x02, rt->line_phono_switch);
}
}
static void usb6fire_control_opt_coax_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
if (comm_rt) {
comm_rt->write8(comm_rt, 0 x22, 0 x00, rt->opt_coax_switch);
comm_rt->write8(comm_rt, 0 x21, 0 x00, rt->opt_coax_switch);
}
}
static int usb6fire_control_set_rate(struct control_runtime *rt, int rate)
{
int ret;
struct usb_device *device = rt->chip->dev;
struct comm_runtime *comm_rt = rt->chip->comm;
if (rate < 0 || rate >= CONTROL_N_RATES)
return -EINVAL;
ret = usb_set_interface(device, 1 , rates_altsetting[rate]);
if (ret < 0 )
return ret;
/* set soundcard clock */
ret = comm_rt->write16(comm_rt, 0 x02, 0 x01, rates_6fire_vl[rate],
rates_6fire_vh[rate]);
if (ret < 0 )
return ret;
return 0 ;
}
static int usb6fire_control_set_channels(
struct control_runtime *rt, int n_analog_out,
int n_analog_in, bool spdif_out, bool spdif_in)
{
int ret;
struct comm_runtime *comm_rt = rt->chip->comm;
/* enable analog inputs and outputs
* (one bit per stereo-channel) */
ret = comm_rt->write16(comm_rt, 0 x02, 0 x02,
(1 << (n_analog_out / 2 )) - 1 ,
(1 << (n_analog_in / 2 )) - 1 );
if (ret < 0 )
return ret;
/* disable digital inputs and outputs */
/* TODO: use spdif_x to enable/disable digital channels */
ret = comm_rt->write16(comm_rt, 0 x02, 0 x03, 0 x00, 0 x00);
if (ret < 0 )
return ret;
return 0 ;
}
static int usb6fire_control_streaming_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
if (comm_rt) {
if (!rt->usb_streaming && rt->digital_thru_switch)
usb6fire_control_set_rate(rt,
DIGITAL_THRU_ONLY_SAMPLERATE);
return comm_rt->write16(comm_rt, 0 x02, 0 x00, 0 x00,
(rt->usb_streaming ? 0 x01 : 0 x00) |
(rt->digital_thru_switch ? 0 x08 : 0 x00));
}
return -EINVAL;
}
static int usb6fire_control_output_vol_info(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 = 180 ;
return 0 ;
}
static int usb6fire_control_output_vol_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
unsigned int ch = kcontrol->private_value;
int changed = 0 ;
if (ch > 4 ) {
dev_err(&rt->chip->dev->dev,
"Invalid channel in volume control." );
return -EINVAL;
}
if (rt->output_vol[ch] != ucontrol->value.integer.value[0 ]) {
rt->output_vol[ch] = ucontrol->value.integer.value[0 ];
rt->ovol_updated &= ~(1 << ch);
changed = 1 ;
}
if (rt->output_vol[ch + 1 ] != ucontrol->value.integer.value[1 ]) {
rt->output_vol[ch + 1 ] = ucontrol->value.integer.value[1 ];
rt->ovol_updated &= ~(2 << ch);
changed = 1 ;
}
if (changed)
usb6fire_control_output_vol_update(rt);
return changed;
}
static int usb6fire_control_output_vol_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
unsigned int ch = kcontrol->private_value;
if (ch > 4 ) {
dev_err(&rt->chip->dev->dev,
"Invalid channel in volume control." );
return -EINVAL;
}
ucontrol->value.integer.value[0 ] = rt->output_vol[ch];
ucontrol->value.integer.value[1 ] = rt->output_vol[ch + 1 ];
return 0 ;
}
static int usb6fire_control_output_mute_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
unsigned int ch = kcontrol->private_value;
u8 old = rt->output_mute;
u8 value = 0 ;
if (ch > 4 ) {
dev_err(&rt->chip->dev->dev,
"Invalid channel in volume control." );
return -EINVAL;
}
rt->output_mute &= ~(3 << ch);
if (ucontrol->value.integer.value[0 ])
value |= 1 ;
if (ucontrol->value.integer.value[1 ])
value |= 2 ;
rt->output_mute |= value << ch;
if (rt->output_mute != old)
usb6fire_control_output_mute_update(rt);
return rt->output_mute != old;
}
static int usb6fire_control_output_mute_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
unsigned int ch = kcontrol->private_value;
u8 value = rt->output_mute >> ch;
if (ch > 4 ) {
dev_err(&rt->chip->dev->dev,
"Invalid channel in volume control." );
return -EINVAL;
}
ucontrol->value.integer.value[0 ] = 1 & value;
value >>= 1 ;
ucontrol->value.integer.value[1 ] = 1 & value;
return 0 ;
}
static int usb6fire_control_input_vol_info(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 = 30 ;
return 0 ;
}
static int usb6fire_control_input_vol_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
int changed = 0 ;
if (rt->input_vol[0 ] != ucontrol->value.integer.value[0 ]) {
rt->input_vol[0 ] = ucontrol->value.integer.value[0 ] - 15 ;
rt->ivol_updated &= ~(1 << 0 );
changed = 1 ;
}
if (rt->input_vol[1 ] != ucontrol->value.integer.value[1 ]) {
rt->input_vol[1 ] = ucontrol->value.integer.value[1 ] - 15 ;
rt->ivol_updated &= ~(1 << 1 );
changed = 1 ;
}
if (changed)
usb6fire_control_input_vol_update(rt);
return changed;
}
static int usb6fire_control_input_vol_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] = rt->input_vol[0 ] + 15 ;
ucontrol->value.integer.value[1 ] = rt->input_vol[1 ] + 15 ;
return 0 ;
}
static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
return snd_ctl_enum_info(uinfo, 1 , 2 , line_phono_texts);
}
static int usb6fire_control_line_phono_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
int changed = 0 ;
if (rt->line_phono_switch != ucontrol->value.integer.value[0 ]) {
rt->line_phono_switch = ucontrol->value.integer.value[0 ];
usb6fire_control_line_phono_update(rt);
changed = 1 ;
}
return changed;
}
static int usb6fire_control_line_phono_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] = rt->line_phono_switch;
return 0 ;
}
static int usb6fire_control_opt_coax_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
return snd_ctl_enum_info(uinfo, 1 , 2 , opt_coax_texts);
}
static int usb6fire_control_opt_coax_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
int changed = 0 ;
if (rt->opt_coax_switch != ucontrol->value.enumerated.item[0 ]) {
rt->opt_coax_switch = ucontrol->value.enumerated.item[0 ];
usb6fire_control_opt_coax_update(rt);
changed = 1 ;
}
return changed;
}
static int usb6fire_control_opt_coax_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
ucontrol->value.enumerated.item[0 ] = rt->opt_coax_switch;
return 0 ;
}
static int usb6fire_control_digital_thru_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
int changed = 0 ;
if (rt->digital_thru_switch != ucontrol->value.integer.value[0 ]) {
rt->digital_thru_switch = ucontrol->value.integer.value[0 ];
usb6fire_control_streaming_update(rt);
changed = 1 ;
}
return changed;
}
static int usb6fire_control_digital_thru_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0 ] = rt->digital_thru_switch;
return 0 ;
}
static const struct snd_kcontrol_new vol_elements[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Playback Volume" ,
.index = 0 ,
.private_value = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = usb6fire_control_output_vol_info,
.get = usb6fire_control_output_vol_get,
.put = usb6fire_control_output_vol_put,
.tlv = { .p = tlv_output }
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Playback Volume" ,
.index = 1 ,
.private_value = 2 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = usb6fire_control_output_vol_info,
.get = usb6fire_control_output_vol_get,
.put = usb6fire_control_output_vol_put,
.tlv = { .p = tlv_output }
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Playback Volume" ,
.index = 2 ,
.private_value = 4 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = usb6fire_control_output_vol_info,
.get = usb6fire_control_output_vol_get,
.put = usb6fire_control_output_vol_put,
.tlv = { .p = tlv_output }
},
{}
};
static const struct snd_kcontrol_new mute_elements[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Playback Switch" ,
.index = 0 ,
.private_value = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_ctl_boolean_stereo_info,
.get = usb6fire_control_output_mute_get,
.put = usb6fire_control_output_mute_put,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Playback Switch" ,
.index = 1 ,
.private_value = 2 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_ctl_boolean_stereo_info,
.get = usb6fire_control_output_mute_get,
.put = usb6fire_control_output_mute_put,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Playback Switch" ,
.index = 2 ,
.private_value = 4 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_ctl_boolean_stereo_info,
.get = usb6fire_control_output_mute_get,
.put = usb6fire_control_output_mute_put,
},
{}
};
static const struct snd_kcontrol_new elements[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Line/Phono Capture Route" ,
.index = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = usb6fire_control_line_phono_info,
.get = usb6fire_control_line_phono_get,
.put = usb6fire_control_line_phono_put
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Opt/Coax Capture Route" ,
.index = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = usb6fire_control_opt_coax_info,
.get = usb6fire_control_opt_coax_get,
.put = usb6fire_control_opt_coax_put
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Digital Thru Playback Route" ,
.index = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_ctl_boolean_mono_info,
.get = usb6fire_control_digital_thru_get,
.put = usb6fire_control_digital_thru_put
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog Capture Volume" ,
.index = 0 ,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = usb6fire_control_input_vol_info,
.get = usb6fire_control_input_vol_get,
.put = usb6fire_control_input_vol_put,
.tlv = { .p = tlv_input }
},
{}
};
static int usb6fire_control_add_virtual(
struct control_runtime *rt,
struct snd_card *card,
char *name,
const struct snd_kcontrol_new *elems)
{
int ret;
int i;
struct snd_kcontrol *vmaster =
snd_ctl_make_virtual_master(name, tlv_output);
struct snd_kcontrol *control;
if (!vmaster)
return -ENOMEM;
ret = snd_ctl_add(card, vmaster);
if (ret < 0 )
return ret;
i = 0 ;
while (elems[i].name) {
control = snd_ctl_new1(&elems[i], rt);
if (!control)
return -ENOMEM;
ret = snd_ctl_add(card, control);
if (ret < 0 )
return ret;
ret = snd_ctl_add_follower(vmaster, control);
if (ret < 0 )
return ret;
i++;
}
return 0 ;
}
int usb6fire_control_init(struct sfire_chip *chip)
{
int i;
int ret;
struct control_runtime *rt = kzalloc(sizeof (struct control_runtime),
GFP_KERNEL);
struct comm_runtime *comm_rt = chip->comm;
if (!rt)
return -ENOMEM;
rt->chip = chip;
rt->update_streaming = usb6fire_control_streaming_update;
rt->set_rate = usb6fire_control_set_rate;
rt->set_channels = usb6fire_control_set_channels;
i = 0 ;
while (init_data[i].type) {
comm_rt->write8(comm_rt, init_data[i].type, init_data[i].reg,
init_data[i].value);
i++;
}
usb6fire_control_opt_coax_update(rt);
usb6fire_control_line_phono_update(rt);
usb6fire_control_output_vol_update(rt);
usb6fire_control_output_mute_update(rt);
usb6fire_control_input_vol_update(rt);
usb6fire_control_streaming_update(rt);
ret = usb6fire_control_add_virtual(rt, chip->card,
"Master Playback Volume" , vol_elements);
if (ret) {
dev_err(&chip->dev->dev, "cannot add control.\n" );
kfree(rt);
return ret;
}
ret = usb6fire_control_add_virtual(rt, chip->card,
"Master Playback Switch" , mute_elements);
if (ret) {
dev_err(&chip->dev->dev, "cannot add control.\n" );
kfree(rt);
return ret;
}
i = 0 ;
while (elements[i].name) {
ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt));
if (ret < 0 ) {
kfree(rt);
dev_err(&chip->dev->dev, "cannot add control.\n" );
return ret;
}
i++;
}
chip->control = rt;
return 0 ;
}
void usb6fire_control_abort(struct sfire_chip *chip)
{}
void usb6fire_control_destroy(struct sfire_chip *chip)
{
kfree(chip->control);
chip->control = NULL;
}
Messung V0.5 in Prozent C=91 H=95 G=92
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-05)
¤
*© Formatika GbR, Deutschland