For each analogue output, in addition to the output volume (gain) control, the hardware also has a mute control. Add ALSA mute controls for each analogue output.
If the device has the line_out_hw_vol feature, then the mute control is disabled along with the output volume control when the switch is set to HW.
Signed-off-by: Geoffrey D. Bennett g@b4.vu --- sound/usb/mixer_scarlett_gen2.c | 170 +++++++++++++++++++++++++++----- 1 file changed, 145 insertions(+), 25 deletions(-)
diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index e156119a21e8..d30f15d580b5 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -39,7 +39,7 @@ * This ALSA mixer gives access to: * - input, output, mixer-matrix muxes * - 18x10 mixer-matrix gain stages - * - gain/volume controls + * - gain/volume/mute controls * - level meters * - line/inst level and pad controls * @@ -195,7 +195,11 @@ enum { };
/* Dim/Mute buttons on the 18i20 */ -#define SCARLETT2_DIM_MUTE_COUNT 2 +enum { + SCARLETT2_BUTTON_MUTE = 0, + SCARLETT2_BUTTON_DIM = 1, + SCARLETT2_DIM_MUTE_COUNT = 2, +};
static const char *const scarlett2_dim_mute_names[SCARLETT2_DIM_MUTE_COUNT] = { "Mute", "Dim" @@ -258,12 +262,14 @@ struct scarlett2_data { u8 master_vol; u8 vol[SCARLETT2_ANALOGUE_MAX]; u8 vol_sw_hw_switch[SCARLETT2_ANALOGUE_MAX]; + u8 mute_switch[SCARLETT2_ANALOGUE_MAX]; u8 level_switch[SCARLETT2_LEVEL_SWITCH_MAX]; u8 pad_switch[SCARLETT2_PAD_SWITCH_MAX]; u8 dim_mute[SCARLETT2_DIM_MUTE_COUNT]; struct snd_kcontrol *sync_ctl; struct snd_kcontrol *master_vol_ctl; struct snd_kcontrol *vol_ctls[SCARLETT2_ANALOGUE_MAX]; + struct snd_kcontrol *mute_ctls[SCARLETT2_ANALOGUE_MAX]; struct snd_kcontrol *dim_mute_ctls[SCARLETT2_DIM_MUTE_COUNT]; u8 mux[SCARLETT2_MUX_MAX]; u8 mix[SCARLETT2_INPUT_MIX_MAX * SCARLETT2_OUTPUT_MIX_MAX]; @@ -509,7 +515,8 @@ struct scarlett2_usb_volume_status { /* actual volume of output inc. dim (-18dB) */ s16 hw_vol[SCARLETT2_ANALOGUE_MAX];
- u8 pad2[SCARLETT2_ANALOGUE_MAX]; + /* internal mute buttons */ + u8 mute_switch[SCARLETT2_ANALOGUE_MAX];
/* sw (0) or hw (1) controlled */ u8 sw_hw_switch[SCARLETT2_ANALOGUE_MAX]; @@ -524,10 +531,11 @@ struct scarlett2_usb_volume_status { enum { SCARLETT2_CONFIG_DIM_MUTE = 0, SCARLETT2_CONFIG_LINE_OUT_VOLUME = 1, - SCARLETT2_CONFIG_SW_HW_SWITCH = 2, - SCARLETT2_CONFIG_LEVEL_SWITCH = 3, - SCARLETT2_CONFIG_PAD_SWITCH = 4, - SCARLETT2_CONFIG_COUNT = 5 + SCARLETT2_CONFIG_MUTE_SWITCH = 2, + SCARLETT2_CONFIG_SW_HW_SWITCH = 3, + SCARLETT2_CONFIG_LEVEL_SWITCH = 4, + SCARLETT2_CONFIG_PAD_SWITCH = 5, + SCARLETT2_CONFIG_COUNT = 6 };
/* Location, size, and activation command number for the configuration @@ -547,6 +555,9 @@ static const struct scarlett2_config [SCARLETT2_CONFIG_LINE_OUT_VOLUME] = { .offset = 0x34, .size = 2, .activate = 1 },
+ [SCARLETT2_CONFIG_MUTE_SWITCH] = { + .offset = 0x5c, .size = 1, .activate = 1 }, + [SCARLETT2_CONFIG_SW_HW_SWITCH] = { .offset = 0x66, .size = 1, .activate = 3 },
@@ -1197,6 +1208,7 @@ static int scarlett2_update_volumes(struct usb_mixer_interface *mixer) int num_line_out = ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT]; int err, i; + int mute;
private->vol_updated = 0;
@@ -1208,15 +1220,18 @@ static int scarlett2_update_volumes(struct usb_mixer_interface *mixer) volume_status.master_vol + SCARLETT2_VOLUME_BIAS, 0, SCARLETT2_VOLUME_BIAS);
- for (i = 0; i < num_line_out; i++) { - if (private->vol_sw_hw_switch[i]) - private->vol[i] = private->master_vol; - } - if (info->line_out_hw_vol) for (i = 0; i < SCARLETT2_DIM_MUTE_COUNT; i++) private->dim_mute[i] = !!volume_status.dim_mute[i];
+ mute = private->dim_mute[SCARLETT2_BUTTON_MUTE]; + + for (i = 0; i < num_line_out; i++) + if (private->vol_sw_hw_switch[i]) { + private->vol[i] = private->master_vol; + private->mute_switch[i] = mute; + } + return 0; }
@@ -1321,6 +1336,55 @@ static const struct snd_kcontrol_new scarlett2_line_out_volume_ctl = { .tlv = { .p = db_scale_scarlett2_gain } };
+/*** Mute Switch Controls ***/ + +static int scarlett2_mute_ctl_get(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + struct scarlett2_data *private = elem->head.mixer->private_data; + int index = elem->control; + + ucontrol->value.integer.value[0] = private->mute_switch[index]; + return 0; +} + +static int scarlett2_mute_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); + + oval = private->mute_switch[index]; + val = !!ucontrol->value.integer.value[0]; + + if (oval == val) + goto unlock; + + private->mute_switch[index] = val; + + /* Send mute change to the device */ + err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_MUTE_SWITCH, + index, val); + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +static const struct snd_kcontrol_new scarlett2_mute_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "", + .info = snd_ctl_boolean_mono_info, + .get = scarlett2_mute_ctl_get, + .put = scarlett2_mute_ctl_put, +}; + /*** HW/SW Volume Switch Controls ***/
static int scarlett2_sw_hw_enum_ctl_info(struct snd_kcontrol *kctl, @@ -1348,18 +1412,26 @@ static void scarlett2_vol_ctl_set_writable(struct usb_mixer_interface *mixer, int index, int value) { struct scarlett2_data *private = mixer->private_data; + struct snd_card *card = mixer->chip->card;
- /* Set/Clear write bit */ - if (value) + /* Set/Clear write bits */ + if (value) { private->vol_ctls[index]->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_WRITE; - else + private->mute_ctls[index]->vd[0].access |= + SNDRV_CTL_ELEM_ACCESS_WRITE; + } else { private->vol_ctls[index]->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_WRITE; + private->mute_ctls[index]->vd[0].access &= + ~SNDRV_CTL_ELEM_ACCESS_WRITE; + }
/* Notify of write bit change */ - snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_INFO, + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, &private->vol_ctls[index]->id); + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, + &private->mute_ctls[index]->id); }
static int scarlett2_sw_hw_enum_ctl_put(struct snd_kcontrol *kctl, @@ -1387,8 +1459,9 @@ static int scarlett2_sw_hw_enum_ctl_put(struct snd_kcontrol *kctl, */ scarlett2_vol_ctl_set_writable(mixer, index, !val);
- /* Reset volume to master volume */ + /* Reset volume/mute to master volume/mute */ private->vol[index] = private->master_vol; + private->mute_switch[index] = private->dim_mute[SCARLETT2_BUTTON_MUTE];
/* Set SW volume to current HW volume */ err = scarlett2_usb_set_config( @@ -1397,6 +1470,13 @@ static int scarlett2_sw_hw_enum_ctl_put(struct snd_kcontrol *kctl, if (err < 0) goto unlock;
+ /* Set SW mute to current HW mute */ + err = scarlett2_usb_set_config( + mixer, SCARLETT2_CONFIG_MUTE_SWITCH, + index, private->dim_mute[SCARLETT2_BUTTON_MUTE]); + if (err < 0) + goto unlock; + /* Send SW/HW switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_SW_HW_SWITCH, index, val); @@ -1554,9 +1634,13 @@ static int scarlett2_dim_mute_ctl_put(struct snd_kcontrol *kctl, struct usb_mixer_elem_info *elem = kctl->private_data; struct usb_mixer_interface *mixer = elem->head.mixer; struct scarlett2_data *private = mixer->private_data; + const struct scarlett2_device_info *info = private->info; + const struct scarlett2_ports *ports = info->ports; + int num_line_out = + ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT];
int index = elem->control; - int oval, val, err = 0; + int oval, val, err = 0, i;
mutex_lock(&private->data_mutex);
@@ -1574,6 +1658,15 @@ static int scarlett2_dim_mute_ctl_put(struct snd_kcontrol *kctl, if (err == 0) err = 1;
+ if (index == SCARLETT2_BUTTON_MUTE) + for (i = 0; i < num_line_out; i++) + if (private->vol_sw_hw_switch[i]) { + private->mute_switch[i] = val; + snd_ctl_notify(mixer->chip->card, + SNDRV_CTL_EVENT_MASK_INFO, + &private->mute_ctls[i]->id); + } + unlock: mutex_unlock(&private->data_mutex); return err; @@ -1627,7 +1720,20 @@ static int scarlett2_add_line_out_ctls(struct usb_mixer_interface *mixer) if (err < 0) return err;
- /* Make the fader read-only if the SW/HW switch is set to HW */ + /* Mute Switch */ + snprintf(s, sizeof(s), + "Line %02d Mute Playback Switch", + i + 1); + err = scarlett2_add_new_ctl(mixer, + &scarlett2_mute_ctl, + i, 1, s, + &private->mute_ctls[i]); + if (err < 0) + return err; + + /* Make the fader and mute controls read-only if the + * SW/HW switch is set to HW + */ if (private->vol_sw_hw_switch[i]) scarlett2_vol_ctl_set_writable(mixer, i, 0);
@@ -2109,12 +2215,16 @@ static int scarlett2_read_configs(struct usb_mixer_interface *mixer) if (err < 0) return err;
+ if (info->line_out_hw_vol) + for (i = 0; i < SCARLETT2_DIM_MUTE_COUNT; i++) + private->dim_mute[i] = !!volume_status.dim_mute[i]; + private->master_vol = clamp( volume_status.master_vol + SCARLETT2_VOLUME_BIAS, 0, SCARLETT2_VOLUME_BIAS);
for (i = 0; i < num_line_out; i++) { - int volume; + int volume, mute;
private->vol_sw_hw_switch[i] = info->line_out_hw_vol @@ -2126,11 +2236,12 @@ static int scarlett2_read_configs(struct usb_mixer_interface *mixer) volume = clamp(volume + SCARLETT2_VOLUME_BIAS, 0, SCARLETT2_VOLUME_BIAS); private->vol[i] = volume; - }
- if (info->line_out_hw_vol) - for (i = 0; i < SCARLETT2_DIM_MUTE_COUNT; i++) - private->dim_mute[i] = !!volume_status.dim_mute[i]; + mute = private->vol_sw_hw_switch[i] + ? private->dim_mute[SCARLETT2_BUTTON_MUTE] + : volume_status.mute_switch[i]; + private->mute_switch[i] = mute; + }
for (i = 0; i < num_mixer_out; i++) { err = scarlett2_usb_get_mix(mixer, i); @@ -2185,8 +2296,12 @@ static void scarlett2_notify_monitor( static void scarlett2_notify_dim_mute( 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; + const struct scarlett2_ports *ports = info->ports; + int num_line_out = + ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT]; int i;
private->vol_updated = 1; @@ -2195,8 +2310,13 @@ static void scarlett2_notify_dim_mute( return;
for (i = 0; i < SCARLETT2_DIM_MUTE_COUNT; i++) - snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->dim_mute_ctls[i]->id); + + for (i = 0; i < num_line_out; i++) + if (private->vol_sw_hw_switch[i]) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, + &private->mute_ctls[i]->id); }
/* Interrupt callback */