forked from Minki/linux
ALSA: usb-audio: scarlett2: Add "air" switch support
Some inputs on Gen 3 models have an "air" feature which can be enabled from the driver or (model-dependent) from the front panel. Add support for getting and setting the state of those switches. Signed-off-by: Geoffrey D. Bennett <g@b4.vu> Link: https://lore.kernel.org/r/44d448a4150b9c068754759c9fdd2bfe21484487.1624379707.git.g@b4.vu Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -53,7 +53,7 @@
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* - mixer-matrix gain stages
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* - gain/volume/mute controls
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* - level meters
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* - line/inst level and pad controls
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* - line/inst level, pad, and air controls
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* - disable/enable MSD mode
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*
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* <ditaa>
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@ -173,6 +173,7 @@ static const u16 scarlett2_mixer_values[SCARLETT2_MIXER_VALUE_COUNT] = {
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/* Maximum number of level and pad switches */
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#define SCARLETT2_LEVEL_SWITCH_MAX 2
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#define SCARLETT2_PAD_SWITCH_MAX 8
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#define SCARLETT2_AIR_SWITCH_MAX 8
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/* Maximum number of inputs to the mixer */
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#define SCARLETT2_INPUT_MIX_MAX 25
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@ -322,6 +323,11 @@ struct scarlett2_device_info {
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*/
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u8 pad_input_count;
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/* the number of analogue inputs with a software switchable
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* "air" control
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*/
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u8 air_input_count;
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/* additional description for the line out volume controls */
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const char * const line_out_descrs[SCARLETT2_ANALOGUE_MAX];
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@ -357,6 +363,7 @@ struct scarlett2_data {
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u8 level_switch[SCARLETT2_LEVEL_SWITCH_MAX];
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u8 pad_switch[SCARLETT2_PAD_SWITCH_MAX];
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u8 dim_mute[SCARLETT2_DIM_MUTE_COUNT];
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u8 air_switch[SCARLETT2_AIR_SWITCH_MAX];
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u8 msd_switch;
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struct snd_kcontrol *sync_ctl;
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struct snd_kcontrol *master_vol_ctl;
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@ -365,6 +372,7 @@ struct scarlett2_data {
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struct snd_kcontrol *dim_mute_ctls[SCARLETT2_DIM_MUTE_COUNT];
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struct snd_kcontrol *level_ctls[SCARLETT2_LEVEL_SWITCH_MAX];
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struct snd_kcontrol *pad_ctls[SCARLETT2_PAD_SWITCH_MAX];
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struct snd_kcontrol *air_ctls[SCARLETT2_AIR_SWITCH_MAX];
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u8 mux[SCARLETT2_MUX_MAX];
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u8 mix[SCARLETT2_INPUT_MIX_MAX * SCARLETT2_OUTPUT_MIX_MAX];
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};
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@ -526,6 +534,7 @@ static const struct scarlett2_device_info solo_gen3_info = {
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.has_msd_mode = 1,
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.level_input_count = 1,
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.level_input_first = 1,
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.air_input_count = 1,
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};
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static const struct scarlett2_device_info s2i2_gen3_info = {
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@ -533,6 +542,7 @@ static const struct scarlett2_device_info s2i2_gen3_info = {
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.has_msd_mode = 1,
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.level_input_count = 2,
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.air_input_count = 2,
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};
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static const struct scarlett2_device_info s4i4_gen3_info = {
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@ -542,6 +552,7 @@ static const struct scarlett2_device_info s4i4_gen3_info = {
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.has_mixer = 1,
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.level_input_count = 2,
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.pad_input_count = 2,
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.air_input_count = 2,
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.line_out_descrs = {
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"Monitor L",
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@ -585,6 +596,7 @@ static const struct scarlett2_device_info s8i6_gen3_info = {
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.has_mixer = 1,
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.level_input_count = 2,
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.pad_input_count = 2,
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.air_input_count = 2,
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.line_out_descrs = {
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"Headphones 1 L",
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@ -636,6 +648,7 @@ static const struct scarlett2_device_info s18i8_gen3_info = {
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.line_out_hw_vol = 1,
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.level_input_count = 2,
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.pad_input_count = 2,
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.air_input_count = 4,
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.line_out_descrs = {
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"Monitor L",
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@ -699,6 +712,7 @@ static const struct scarlett2_device_info s18i20_gen3_info = {
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.line_out_hw_vol = 1,
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.level_input_count = 2,
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.pad_input_count = 8,
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.air_input_count = 8,
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.line_out_descrs = {
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"Monitor 1 L",
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@ -846,7 +860,8 @@ enum {
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SCARLETT2_CONFIG_LEVEL_SWITCH = 4,
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SCARLETT2_CONFIG_PAD_SWITCH = 5,
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SCARLETT2_CONFIG_MSD_SWITCH = 6,
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SCARLETT2_CONFIG_COUNT = 7
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SCARLETT2_CONFIG_AIR_SWITCH = 7,
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SCARLETT2_CONFIG_COUNT = 8
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};
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/* Location, size, and activation command number for the configuration
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@ -872,6 +887,9 @@ static const struct scarlett2_config
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[SCARLETT2_CONFIG_LEVEL_SWITCH] = {
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.offset = 0x08, .size = 1, .activate = 7 },
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[SCARLETT2_CONFIG_AIR_SWITCH] = {
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.offset = 0x09, .size = 1, .activate = 8 },
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/* Devices with a mixer (Gen 2 and all other Gen 3) */
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}, {
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[SCARLETT2_CONFIG_DIM_MUTE] = {
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@ -892,6 +910,9 @@ static const struct scarlett2_config
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[SCARLETT2_CONFIG_PAD_SWITCH] = {
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.offset = 0x84, .size = 8, .activate = 8 },
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[SCARLETT2_CONFIG_AIR_SWITCH] = {
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.offset = 0x8c, .size = 8, .activate = 8 },
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[SCARLETT2_CONFIG_MSD_SWITCH] = {
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.offset = 0x9d, .size = 8, .activate = 6 },
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} };
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@ -1100,9 +1121,7 @@ static void scarlett2_config_save_work(struct work_struct *work)
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scarlett2_config_save(private->mixer);
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}
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/* Send a USB message to set a configuration parameter (volume level,
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* sw/hw volume switch, line/inst level switch, or pad switch)
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*/
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/* Send a USB message to set a SCARLETT2_CONFIG_* parameter */
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static int scarlett2_usb_set_config(
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struct usb_mixer_interface *mixer,
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int config_item_num, int index, int value)
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@ -1900,6 +1919,14 @@ static int scarlett2_update_input_other(struct usb_mixer_interface *mixer)
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return err;
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}
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if (info->air_input_count) {
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int err = scarlett2_usb_get_config(
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mixer, SCARLETT2_CONFIG_AIR_SWITCH,
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info->air_input_count, private->air_switch);
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if (err < 0)
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return err;
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}
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return 0;
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}
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@ -2030,6 +2057,61 @@ static const struct snd_kcontrol_new scarlett2_pad_ctl = {
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.put = scarlett2_pad_ctl_put,
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};
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/*** Air Switch Controls ***/
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static int scarlett2_air_ctl_get(struct snd_kcontrol *kctl,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct usb_mixer_elem_info *elem = kctl->private_data;
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struct usb_mixer_interface *mixer = elem->head.mixer;
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struct scarlett2_data *private = mixer->private_data;
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mutex_lock(&private->data_mutex);
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if (private->input_other_updated)
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scarlett2_update_input_other(mixer);
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ucontrol->value.integer.value[0] = private->air_switch[elem->control];
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mutex_unlock(&private->data_mutex);
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return 0;
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}
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static int scarlett2_air_ctl_put(struct snd_kcontrol *kctl,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct usb_mixer_elem_info *elem = kctl->private_data;
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struct usb_mixer_interface *mixer = elem->head.mixer;
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struct scarlett2_data *private = mixer->private_data;
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int index = elem->control;
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int oval, val, err = 0;
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mutex_lock(&private->data_mutex);
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oval = private->air_switch[index];
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val = !!ucontrol->value.integer.value[0];
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if (oval == val)
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goto unlock;
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private->air_switch[index] = val;
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/* Send switch change to the device */
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err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_AIR_SWITCH,
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index, val);
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unlock:
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mutex_unlock(&private->data_mutex);
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return err;
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}
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static const struct snd_kcontrol_new scarlett2_air_ctl = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "",
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.info = snd_ctl_boolean_mono_info,
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.get = scarlett2_air_ctl_get,
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.put = scarlett2_air_ctl_put,
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};
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/*** Dim/Mute Controls ***/
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static int scarlett2_dim_mute_ctl_get(struct snd_kcontrol *kctl,
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@ -2213,6 +2295,15 @@ static int scarlett2_add_line_in_ctls(struct usb_mixer_interface *mixer)
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return err;
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}
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/* Add input air controls */
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for (i = 0; i < info->air_input_count; i++) {
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snprintf(s, sizeof(s), fmt, i + 1, "Air", "Switch");
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err = scarlett2_add_new_ctl(mixer, &scarlett2_air_ctl,
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i, 1, s, &private->air_ctls[i]);
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if (err < 0)
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return err;
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}
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return 0;
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}
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@ -2821,7 +2912,7 @@ static void scarlett2_notify_dim_mute(
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&private->mute_ctls[i]->id);
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}
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/* Notify on "input other" change (level/pad) */
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/* Notify on "input other" change (level/pad/air) */
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static void scarlett2_notify_input_other(
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struct usb_mixer_interface *mixer)
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{
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@ -2838,6 +2929,9 @@ static void scarlett2_notify_input_other(
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for (i = 0; i < info->pad_input_count; i++)
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snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
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&private->pad_ctls[i]->id);
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for (i = 0; i < info->air_input_count; i++)
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snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
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&private->air_ctls[i]->id);
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}
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/* Interrupt callback */
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