ALSA: scarlett2: Add support for software-controllable input gain

Some devices in the Scarlett Gen 4 series have support for
software-controllable input gain. Along with this comes a channel
select option, an auto-gain feature, "safe" mode, and linking two
channels into a stereo pair.

Mark the new scarlett2_notify_input_*() functions with __always_unused
until they get used when the Gen 4 notification callback function
arrays are added.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/fc39e80bb39863dd1579d342097203942b4f3034.1703612638.git.g@b4.vu
This commit is contained in:
Geoffrey D. Bennett 2023-12-27 04:37:12 +10:30 committed by Takashi Iwai
parent 038216f2bc
commit 0a995e38dc

View File

@ -164,6 +164,7 @@
/* some gui mixers can't handle negative ctl values */
#define SCARLETT2_VOLUME_BIAS 127
#define SCARLETT2_GAIN_BIAS 70
/* mixer range from -80dB to +6dB in 0.5dB steps */
#define SCARLETT2_MIXER_MIN_DB -80
@ -196,11 +197,12 @@ static const u16 scarlett2_mixer_values[SCARLETT2_MIXER_VALUE_COUNT] = {
/* Maximum number of analogue outputs */
#define SCARLETT2_ANALOGUE_MAX 10
/* Maximum number of level and pad switches */
/* Maximum number of various input controls */
#define SCARLETT2_LEVEL_SWITCH_MAX 2
#define SCARLETT2_PAD_SWITCH_MAX 8
#define SCARLETT2_AIR_SWITCH_MAX 8
#define SCARLETT2_PHANTOM_SWITCH_MAX 2
#define SCARLETT2_INPUT_GAIN_MAX 2
/* Maximum number of inputs to the mixer */
#define SCARLETT2_INPUT_MIX_MAX 25
@ -266,6 +268,16 @@ static const char *const scarlett2_dim_mute_names[SCARLETT2_DIM_MUTE_COUNT] = {
"Mute Playback Switch", "Dim Playback Switch"
};
/* Autogain Status Values */
enum {
SCARLETT2_AUTOGAIN_STATUS_STOPPED,
SCARLETT2_AUTOGAIN_STATUS_RUNNING,
SCARLETT2_AUTOGAIN_STATUS_FAILED,
SCARLETT2_AUTOGAIN_STATUS_CANCELLED,
SCARLETT2_AUTOGAIN_STATUS_UNKNOWN,
SCARLETT2_AUTOGAIN_STATUS_COUNT
};
/* Notification callback functions */
struct scarlett2_notification {
u32 mask;
@ -316,6 +328,12 @@ enum {
SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH,
SCARLETT2_CONFIG_MONITOR_OTHER_ENABLE,
SCARLETT2_CONFIG_TALKBACK_MAP,
SCARLETT2_CONFIG_AUTOGAIN_SWITCH,
SCARLETT2_CONFIG_AUTOGAIN_STATUS,
SCARLETT2_CONFIG_INPUT_GAIN,
SCARLETT2_CONFIG_SAFE_SWITCH,
SCARLETT2_CONFIG_INPUT_SELECT_SWITCH,
SCARLETT2_CONFIG_INPUT_LINK_SWITCH,
SCARLETT2_CONFIG_COUNT
};
@ -662,6 +680,9 @@ struct scarlett2_device_info {
/* the number of inputs each phantom switch controls */
u8 inputs_per_phantom;
/* the number of inputs with software-controllable gain */
u8 gain_input_count;
/* the number of direct monitor options
* (0 = none, 1 = mono only, 2 = mono/stereo)
*/
@ -722,6 +743,10 @@ struct scarlett2_data {
u8 input_pad_updated;
u8 input_air_updated;
u8 input_phantom_updated;
u8 input_select_updated;
u8 input_gain_updated;
u8 autogain_updated;
u8 input_safe_updated;
u8 monitor_other_updated;
u8 direct_monitor_updated;
u8 mux_updated;
@ -737,6 +762,12 @@ struct scarlett2_data {
u8 air_switch[SCARLETT2_AIR_SWITCH_MAX];
u8 phantom_switch[SCARLETT2_PHANTOM_SWITCH_MAX];
u8 phantom_persistence;
u8 input_select_switch;
u8 input_link_switch[SCARLETT2_INPUT_GAIN_MAX / 2];
u8 gain[SCARLETT2_INPUT_GAIN_MAX];
u8 autogain_switch[SCARLETT2_INPUT_GAIN_MAX];
u8 autogain_status[SCARLETT2_INPUT_GAIN_MAX];
u8 safe_switch[SCARLETT2_INPUT_GAIN_MAX];
u8 direct_monitor_switch;
u8 speaker_switching_switch;
u8 talkback_switch;
@ -754,6 +785,12 @@ struct scarlett2_data {
struct snd_kcontrol *pad_ctls[SCARLETT2_PAD_SWITCH_MAX];
struct snd_kcontrol *air_ctls[SCARLETT2_AIR_SWITCH_MAX];
struct snd_kcontrol *phantom_ctls[SCARLETT2_PHANTOM_SWITCH_MAX];
struct snd_kcontrol *input_select_ctl;
struct snd_kcontrol *input_link_ctls[SCARLETT2_INPUT_GAIN_MAX / 2];
struct snd_kcontrol *input_gain_ctls[SCARLETT2_INPUT_GAIN_MAX];
struct snd_kcontrol *autogain_ctls[SCARLETT2_INPUT_GAIN_MAX];
struct snd_kcontrol *autogain_status_ctls[SCARLETT2_INPUT_GAIN_MAX];
struct snd_kcontrol *safe_ctls[SCARLETT2_INPUT_GAIN_MAX];
struct snd_kcontrol *mux_ctls[SCARLETT2_MUX_MAX];
struct snd_kcontrol *direct_monitor_ctl;
struct snd_kcontrol *speaker_switching_ctl;
@ -2352,6 +2389,610 @@ static int scarlett2_add_sync_ctl(struct usb_mixer_interface *mixer)
0, 1, "Sync Status", &private->sync_ctl);
}
/*** Autogain Switch and Status Controls ***/
static int scarlett2_update_autogain(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int err, i;
u8 raw_autogain_status[SCARLETT2_INPUT_GAIN_MAX];
private->autogain_updated = 0;
if (!info->gain_input_count)
return 0;
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_AUTOGAIN_SWITCH,
info->gain_input_count, private->autogain_switch);
if (err < 0)
return err;
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_AUTOGAIN_STATUS,
info->gain_input_count, raw_autogain_status);
if (err < 0)
return err;
/* Translate autogain_switch and raw_autogain_status into
* autogain_status
*/
for (i = 0; i < info->gain_input_count; i++)
if (private->autogain_switch[i])
private->autogain_status[i] =
SCARLETT2_AUTOGAIN_STATUS_RUNNING;
else if (raw_autogain_status[i] == 0)
private->autogain_status[i] =
SCARLETT2_AUTOGAIN_STATUS_STOPPED;
else if (raw_autogain_status[i] >= 2 &&
raw_autogain_status[i] <= 5)
private->autogain_status[i] =
SCARLETT2_AUTOGAIN_STATUS_FAILED;
else if (raw_autogain_status[i] == 6)
private->autogain_status[i] =
SCARLETT2_AUTOGAIN_STATUS_CANCELLED;
else
private->autogain_status[i] =
SCARLETT2_AUTOGAIN_STATUS_UNKNOWN;
return 0;
}
static int scarlett2_autogain_switch_ctl_get(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
if (private->autogain_updated) {
err = scarlett2_update_autogain(mixer);
if (err < 0)
goto unlock;
}
ucontrol->value.enumerated.item[0] =
private->autogain_switch[elem->control];
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_autogain_status_ctl_get(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
if (private->autogain_updated) {
err = scarlett2_update_autogain(mixer);
if (err < 0)
goto unlock;
}
ucontrol->value.enumerated.item[0] =
private->autogain_status[elem->control];
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_autogain_switch_ctl_put(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int index = elem->control;
int oval, val, err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
oval = private->autogain_switch[index];
val = !!ucontrol->value.integer.value[0];
if (oval == val)
goto unlock;
private->autogain_switch[index] = val;
/* Send switch change to the device */
err = scarlett2_usb_set_config(
mixer, SCARLETT2_CONFIG_AUTOGAIN_SWITCH, index, val);
if (err == 0)
err = 1;
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_autogain_status_ctl_info(
struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo)
{
static const char *const values[SCARLETT2_AUTOGAIN_STATUS_COUNT] = {
"Stopped", "Running", "Failed", "Cancelled", "Unknown"
};
return snd_ctl_enum_info(
uinfo, 1, SCARLETT2_AUTOGAIN_STATUS_COUNT, values);
}
static const struct snd_kcontrol_new scarlett2_autogain_switch_ctl = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "",
.info = snd_ctl_boolean_mono_info,
.get = scarlett2_autogain_switch_ctl_get,
.put = scarlett2_autogain_switch_ctl_put
};
static const struct snd_kcontrol_new scarlett2_autogain_status_ctl = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READ,
.name = "",
.info = scarlett2_autogain_status_ctl_info,
.get = scarlett2_autogain_status_ctl_get,
};
/*** Input Select Control ***/
static int scarlett2_update_input_select(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int link_count = info->gain_input_count / 2;
int err;
private->input_select_updated = 0;
if (!link_count)
return 0;
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_INPUT_SELECT_SWITCH,
1, &private->input_select_switch);
if (err < 0)
return err;
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_INPUT_LINK_SWITCH,
link_count, private->input_link_switch);
if (err < 0)
return err;
/* simplified because no model yet has link_count > 1 */
if (private->input_link_switch[0])
private->input_select_switch = 0;
return 0;
}
static int scarlett2_input_select_ctl_get(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
if (private->input_select_updated) {
err = scarlett2_update_input_select(mixer);
if (err < 0)
goto unlock;
}
ucontrol->value.enumerated.item[0] = private->input_select_switch;
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_input_select_ctl_put(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int oval, val, err = 0;
int max_val = private->input_link_switch[0] ? 0 : 1;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
oval = private->input_select_switch;
val = ucontrol->value.integer.value[0];
if (val < 0)
val = 0;
else if (val > max_val)
val = max_val;
if (oval == val)
goto unlock;
private->input_select_switch = val;
/* Send switch change to the device if inputs not linked */
if (!private->input_link_switch[0])
err = scarlett2_usb_set_config(
mixer, SCARLETT2_CONFIG_INPUT_SELECT_SWITCH,
1, val);
if (err == 0)
err = 1;
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_input_select_ctl_info(
struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int inputs = private->info->gain_input_count;
int i, j;
int err;
char **values = kcalloc(inputs, sizeof(char *), GFP_KERNEL);
if (!values)
return -ENOMEM;
mutex_lock(&private->data_mutex);
/* Loop through each input
* Linked inputs have one value for the pair
*/
for (i = 0, j = 0; i < inputs; i++) {
if (private->input_link_switch[i / 2]) {
values[j++] = kasprintf(
GFP_KERNEL, "Input %d-%d", i + 1, i + 2);
i++;
} else {
values[j++] = kasprintf(
GFP_KERNEL, "Input %d", i + 1);
}
}
err = snd_ctl_enum_info(uinfo, 1, j,
(const char * const *)values);
mutex_unlock(&private->data_mutex);
for (i = 0; i < inputs; i++)
kfree(values[i]);
kfree(values);
return err;
}
static const struct snd_kcontrol_new scarlett2_input_select_ctl = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "",
.info = scarlett2_input_select_ctl_info,
.get = scarlett2_input_select_ctl_get,
.put = scarlett2_input_select_ctl_put,
};
/*** Input Link Switch Controls ***/
static int scarlett2_input_link_ctl_get(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
if (private->input_select_updated) {
err = scarlett2_update_input_select(mixer);
if (err < 0)
goto unlock;
}
ucontrol->value.enumerated.item[0] =
private->input_link_switch[elem->control];
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_input_link_ctl_put(
struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int index = elem->control;
int oval, val, err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
oval = private->input_link_switch[index];
val = !!ucontrol->value.integer.value[0];
if (oval == val)
goto unlock;
private->input_link_switch[index] = val;
/* Notify of change in input select options available */
snd_ctl_notify(mixer->chip->card,
SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
&private->input_select_ctl->id);
private->input_select_updated = 1;
/* Send switch change to the device
* Link for channels 1-2 is at index 1
* No device yet has more than 2 channels linked
*/
err = scarlett2_usb_set_config(
mixer, SCARLETT2_CONFIG_INPUT_LINK_SWITCH, index + 1, val);
if (err == 0)
err = 1;
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static const struct snd_kcontrol_new scarlett2_input_link_ctl = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "",
.info = snd_ctl_boolean_mono_info,
.get = scarlett2_input_link_ctl_get,
.put = scarlett2_input_link_ctl_put
};
/*** Input Gain Controls ***/
static int scarlett2_update_input_gain(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
private->input_gain_updated = 0;
if (!info->gain_input_count)
return 0;
return scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_INPUT_GAIN,
info->gain_input_count, private->gain);
}
static int scarlett2_input_gain_ctl_info(struct snd_kcontrol *kctl,
struct snd_ctl_elem_info *uinfo)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = elem->channels;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = SCARLETT2_GAIN_BIAS;
uinfo->value.integer.step = 1;
return 0;
}
static int scarlett2_input_gain_ctl_get(struct snd_kcontrol *kctl,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
if (private->input_gain_updated) {
err = scarlett2_update_input_gain(mixer);
if (err < 0)
goto unlock;
}
ucontrol->value.integer.value[0] =
private->gain[elem->control];
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_input_gain_ctl_put(struct snd_kcontrol *kctl,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int index = elem->control;
int oval, val, err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
oval = private->gain[index];
val = ucontrol->value.integer.value[0];
if (oval == val)
goto unlock;
private->gain[index] = val;
/* Send gain change to the device */
err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_INPUT_GAIN,
index, val);
if (err == 0)
err = 1;
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static const DECLARE_TLV_DB_MINMAX(
db_scale_scarlett2_gain, -SCARLETT2_GAIN_BIAS * 100, 0
);
static const struct snd_kcontrol_new scarlett2_input_gain_ctl = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.name = "",
.info = scarlett2_input_gain_ctl_info,
.get = scarlett2_input_gain_ctl_get,
.put = scarlett2_input_gain_ctl_put,
.private_value = 0, /* max value */
.tlv = { .p = db_scale_scarlett2_gain }
};
/*** Safe Controls ***/
static int scarlett2_update_input_safe(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
private->input_safe_updated = 0;
if (!info->gain_input_count)
return 0;
return scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_SAFE_SWITCH,
info->gain_input_count, private->safe_switch);
}
static int scarlett2_safe_ctl_get(struct snd_kcontrol *kctl,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
if (private->input_safe_updated) {
err = scarlett2_update_input_safe(mixer);
if (err < 0)
goto unlock;
}
ucontrol->value.integer.value[0] =
private->safe_switch[elem->control];
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static int scarlett2_safe_ctl_put(struct snd_kcontrol *kctl,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
int index = elem->control;
int oval, val, err = 0;
mutex_lock(&private->data_mutex);
if (private->hwdep_in_use) {
err = -EBUSY;
goto unlock;
}
oval = private->safe_switch[index];
val = !!ucontrol->value.integer.value[0];
if (oval == val)
goto unlock;
private->safe_switch[index] = val;
/* Send switch change to the device */
err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_SAFE_SWITCH,
index, val);
if (err == 0)
err = 1;
unlock:
mutex_unlock(&private->data_mutex);
return err;
}
static const struct snd_kcontrol_new scarlett2_safe_ctl = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "",
.info = snd_ctl_boolean_mono_info,
.get = scarlett2_safe_ctl_get,
.put = scarlett2_safe_ctl_put,
};
/*** Analogue Line Out Volume Controls ***/
/* Update hardware volume controls after receiving notification that
@ -3908,6 +4549,60 @@ static int scarlett2_add_line_in_ctls(struct usb_mixer_interface *mixer)
return err;
}
/* Add software-controllable input gain controls */
if (info->gain_input_count) {
err = scarlett2_add_new_ctl(
mixer, &scarlett2_input_select_ctl, 0, 1,
"Input Select Capture Enum",
&private->input_select_ctl);
if (err < 0)
return err;
for (i = 0; i < info->gain_input_count; i++) {
if (i % 2) {
snprintf(s, sizeof(s),
"Line In %d-%d Link Capture Switch",
i, i + 1);
err = scarlett2_add_new_ctl(
mixer, &scarlett2_input_link_ctl,
i / 2, 1, s,
&private->input_link_ctls[i / 2]);
if (err < 0)
return err;
}
snprintf(s, sizeof(s), fmt, i + 1,
"Gain", "Volume");
err = scarlett2_add_new_ctl(
mixer, &scarlett2_input_gain_ctl,
i, 1, s, &private->input_gain_ctls[i]);
if (err < 0)
return err;
snprintf(s, sizeof(s), fmt, i + 1,
"Autogain", "Switch");
err = scarlett2_add_new_ctl(
mixer, &scarlett2_autogain_switch_ctl,
i, 1, s, &private->autogain_ctls[i]);
if (err < 0)
return err;
snprintf(s, sizeof(s), fmt, i + 1,
"Autogain Status", "Enum");
err = scarlett2_add_new_ctl(
mixer, &scarlett2_autogain_status_ctl,
i, 1, s, &private->autogain_status_ctls[i]);
snprintf(s, sizeof(s), fmt, i + 1,
"Safe", "Switch");
err = scarlett2_add_new_ctl(
mixer, &scarlett2_safe_ctl,
i, 1, s, &private->safe_ctls[i]);
if (err < 0)
return err;
}
}
return 0;
}
@ -4838,6 +5533,22 @@ static int scarlett2_read_configs(struct usb_mixer_interface *mixer)
if (err < 0)
return err;
err = scarlett2_update_input_select(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_gain(mixer);
if (err < 0)
return err;
err = scarlett2_update_autogain(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_safe(mixer);
if (err < 0)
return err;
for (i = 0; i < private->num_mix_out; i++) {
err = scarlett2_usb_get_mix(mixer, i);
if (err < 0)
@ -4970,6 +5681,89 @@ static void scarlett2_notify_input_other(struct usb_mixer_interface *mixer)
scarlett2_notify_input_phantom(mixer);
}
/* Notify on input select change */
static __always_unused void scarlett2_notify_input_select(
struct usb_mixer_interface *mixer)
{
struct snd_card *card = mixer->chip->card;
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int i;
if (!info->gain_input_count)
return;
private->input_select_updated = 1;
snd_ctl_notify(card,
SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
&private->input_select_ctl->id);
for (i = 0; i < info->gain_input_count / 2; i++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->input_link_ctls[i]->id);
}
/* Notify on input gain change */
static __always_unused void scarlett2_notify_input_gain(
struct usb_mixer_interface *mixer)
{
struct snd_card *card = mixer->chip->card;
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int i;
if (!info->gain_input_count)
return;
private->input_gain_updated = 1;
for (i = 0; i < info->gain_input_count; i++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->input_gain_ctls[i]->id);
}
/* Notify on autogain change */
static __always_unused void scarlett2_notify_autogain(
struct usb_mixer_interface *mixer)
{
struct snd_card *card = mixer->chip->card;
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int i;
if (!info->gain_input_count)
return;
private->autogain_updated = 1;
for (i = 0; i < info->gain_input_count; i++) {
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->autogain_ctls[i]->id);
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->autogain_status_ctls[i]->id);
}
}
/* Notify on input safe switch change */
static __always_unused void scarlett2_notify_input_safe(
struct usb_mixer_interface *mixer)
{
struct snd_card *card = mixer->chip->card;
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int i;
if (!info->gain_input_count)
return;
private->input_safe_updated = 1;
for (i = 0; i < info->gain_input_count; i++)
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->safe_ctls[i]->id);
}
/* Notify on "monitor other" change (speaker switching, talkback) */
static void scarlett2_notify_monitor_other(struct usb_mixer_interface *mixer)
{