From patchwork Tue Dec 26 18:07:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Geoffrey D. Bennett" X-Patchwork-Id: 13504933 Received: from m.b4.vu (m.b4.vu [203.16.231.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D77925024C for ; Tue, 26 Dec 2023 18:07:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=b4.vu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=b4.vu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=b4.vu header.i=@b4.vu header.b="ZHoX5WZJ" Received: by m.b4.vu (Postfix, from userid 1000) id 50DC5604B5B4; Wed, 27 Dec 2023 04:37:12 +1030 (ACDT) DKIM-Filter: OpenDKIM Filter v2.11.0 m.b4.vu 50DC5604B5B4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=b4.vu; s=m1; t=1703614032; bh=tgl8p/A9CoPnMovJ/OCePItblwB8Rm6G9qT5nai1CLo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZHoX5WZJ2+h4qVQKxB7hlGhl90mtRf8yN/vQP8iwFGKoGPnVjlcd2IXu3mm82Mavn 4TBJRR8nXmD0f5QbDAiiG4LlUQsZIRfTGP0bUJVJqnteQdrDC4XuOzLCbD9mk4zWEw oMHOOoJUJTV1whkwrlmbJF9t6zb+0U71FhA16etR8SKVQkCwMt7/tKiCYomZagtmtW VNioUi/xoLQV3unVUd3TIJhrp2an96JvtpUkzhvpc3RWVVxhG+cu/ur0EH9FW9QZ7M UEmlTwVJBnG+Gmr1Py//N5NChccHfLWoGQu1mQYDwcDRfMG43a8s19PRVBrtAnv2PK xSjMJrXzpGx4g== Date: Wed, 27 Dec 2023 04:37:12 +1030 From: "Geoffrey D. Bennett" To: Takashi Iwai Cc: Takashi Iwai , alsa-devel@alsa-project.org, linux-sound@vger.kernel.org Subject: [PATCH 07/20] ALSA: scarlett2: Add support for software-controllable input gain Message-ID: References: Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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 --- sound/usb/mixer_scarlett2.c | 796 +++++++++++++++++++++++++++++++++++- 1 file changed, 795 insertions(+), 1 deletion(-) diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index 416973b8a6c4..a0212bda2b1a 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -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) {