From patchwork Tue Jun 22 17:03:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Geoffrey D. Bennett" X-Patchwork-Id: 12338137 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A30DEC2B9F4 for ; Tue, 22 Jun 2021 17:05:57 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C911961353 for ; Tue, 22 Jun 2021 17:05:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C911961353 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=b4.vu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 5E3171660; Tue, 22 Jun 2021 19:05:05 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 5E3171660 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1624381555; bh=DShmZevEwEeYro5hYDl4vzj1Fb6tHPol8gYIr4fQ6tk=; h=Date:From:To:Subject:References:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=t4DKlPkSe/ZE+Tak/E8fqbBQNe9Akuse59o7VDamjF1JOu90M0KD1Z3ND83/VSZPV oGAMe6yr6JKWmq50GpWoEsjSRtlZ0wpBzwX79bBbE89EJvKIKr6Czz7S3KGoJ8/n6L LprfsiAlz/uRTU/CfFEHAp0cKOPsto4xPx5OTPg0= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 2358BF804D8; Tue, 22 Jun 2021 19:03:15 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 53242F804E3; Tue, 22 Jun 2021 19:03:14 +0200 (CEST) Received: from m.b4.vu (m.b4.vu [203.16.231.148]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 2AC76F80268 for ; Tue, 22 Jun 2021 19:03:11 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 2AC76F80268 Received: by m.b4.vu (Postfix, from userid 1000) id 90BEA61E286D; Wed, 23 Jun 2021 02:33:08 +0930 (ACST) Date: Wed, 23 Jun 2021 02:33:08 +0930 From: "Geoffrey D. Bennett" To: alsa-devel@alsa-project.org, Takashi Iwai Subject: [PATCH 10/17] ALSA: usb-audio: scarlett2: Add direct monitor support Message-ID: <61d23dc4feb3b046d870ad7203e66ff2bd1d278c.1624379707.git.g@b4.vu> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Hin-Tak Leung , Vladimir Sadovnikov X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" The Solo and 2i2 devices don't have a mixer but they do have a "direct monitor" switch. Add support for getting and setting the state of this switch. Co-developed-by: Vladimir Sadovnikov Signed-off-by: Vladimir Sadovnikov Signed-off-by: Geoffrey D. Bennett --- sound/usb/mixer_scarlett_gen2.c | 161 ++++++++++++++++++++++++++++++-- 1 file changed, 154 insertions(+), 7 deletions(-) diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index bc4f29cfb2f3..2912854f64c1 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -48,7 +48,8 @@ * Support for Solo/2i2 Gen 3 added in May 2021 (thanks to Alexander * Vorona for 2i2 protocol traces). * - * Support for phantom power added in May 2021. + * Support for phantom power and direct monitoring added in May-June + * 2021. * * This ALSA mixer gives access to (model-dependent): * - input, output, mixer-matrix muxes @@ -56,7 +57,7 @@ * - gain/volume/mute controls * - level meters * - line/inst level, pad, and air controls - * - phantom power controls + * - phantom power and direct monitor controls * - disable/enable MSD mode * * @@ -338,6 +339,11 @@ struct scarlett2_device_info { /* the number of inputs each phantom switch controls */ u8 inputs_per_phantom; + /* the number of direct monitor options + * (0 = none, 1 = mono only, 2 = mono/stereo) + */ + u8 direct_monitor; + /* additional description for the line out volume controls */ const char * const line_out_descrs[SCARLETT2_ANALOGUE_MAX]; @@ -365,6 +371,7 @@ struct scarlett2_data { u8 sync_updated; u8 vol_updated; u8 input_other_updated; + u8 monitor_other_updated; u8 sync; u8 master_vol; u8 vol[SCARLETT2_ANALOGUE_MAX]; @@ -376,6 +383,7 @@ struct scarlett2_data { u8 air_switch[SCARLETT2_AIR_SWITCH_MAX]; u8 phantom_switch[SCARLETT2_PHANTOM_SWITCH_MAX]; u8 phantom_persistence; + u8 direct_monitor_switch; u8 msd_switch; struct snd_kcontrol *sync_ctl; struct snd_kcontrol *master_vol_ctl; @@ -386,6 +394,7 @@ 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 *direct_monitor_ctl; u8 mux[SCARLETT2_MUX_MAX]; u8 mix[SCARLETT2_INPUT_MIX_MAX * SCARLETT2_OUTPUT_MIX_MAX]; }; @@ -550,6 +559,7 @@ static const struct scarlett2_device_info solo_gen3_info = { .air_input_count = 1, .phantom_count = 1, .inputs_per_phantom = 1, + .direct_monitor = 1, }; static const struct scarlett2_device_info s2i2_gen3_info = { @@ -560,6 +570,7 @@ static const struct scarlett2_device_info s2i2_gen3_info = { .air_input_count = 2, .phantom_count = 1, .inputs_per_phantom = 2, + .direct_monitor = 2, }; static const struct scarlett2_device_info s4i4_gen3_info = { @@ -824,10 +835,11 @@ static int scarlett2_get_port_start_num( /*** USB Interactions ***/ /* Notifications from the interface */ -#define SCARLETT2_USB_NOTIFY_SYNC 0x00000008 -#define SCARLETT2_USB_NOTIFY_DIM_MUTE 0x00200000 -#define SCARLETT2_USB_NOTIFY_MONITOR 0x00400000 -#define SCARLETT2_USB_NOTIFY_INPUT_OTHER 0x00800000 +#define SCARLETT2_USB_NOTIFY_SYNC 0x00000008 +#define SCARLETT2_USB_NOTIFY_DIM_MUTE 0x00200000 +#define SCARLETT2_USB_NOTIFY_MONITOR 0x00400000 +#define SCARLETT2_USB_NOTIFY_INPUT_OTHER 0x00800000 +#define SCARLETT2_USB_NOTIFY_MONITOR_OTHER 0x01000000 /* Commands for sending/receiving requests/responses */ #define SCARLETT2_USB_CMD_INIT 0 @@ -888,7 +900,8 @@ enum { SCARLETT2_CONFIG_AIR_SWITCH = 7, SCARLETT2_CONFIG_PHANTOM_SWITCH = 8, SCARLETT2_CONFIG_PHANTOM_PERSISTENCE = 9, - SCARLETT2_CONFIG_COUNT = 10 + SCARLETT2_CONFIG_DIRECT_MONITOR = 10, + SCARLETT2_CONFIG_COUNT = 11 }; /* Location, size, and activation command number for the configuration @@ -917,6 +930,9 @@ static const struct scarlett2_config [SCARLETT2_CONFIG_PHANTOM_SWITCH] = { .offset = 0x06, .size = 8, .activate = 3 }, + [SCARLETT2_CONFIG_DIRECT_MONITOR] = { + .offset = 0x07, .size = 8, .activate = 4 }, + [SCARLETT2_CONFIG_LEVEL_SWITCH] = { .offset = 0x08, .size = 1, .activate = 7 }, @@ -2270,6 +2286,112 @@ static const struct snd_kcontrol_new scarlett2_phantom_persistence_ctl = { .put = scarlett2_phantom_persistence_ctl_put, }; +/*** Direct Monitor Control ***/ + +static int scarlett2_update_monitor_other(struct usb_mixer_interface *mixer) +{ + struct scarlett2_data *private = mixer->private_data; + const struct scarlett2_device_info *info = private->info; + + private->monitor_other_updated = 0; + + if (info->direct_monitor) + return scarlett2_usb_get_config( + mixer, SCARLETT2_CONFIG_DIRECT_MONITOR, + 1, &private->direct_monitor_switch); + + return 0; +} + +static int scarlett2_direct_monitor_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 = elem->head.mixer->private_data; + + mutex_lock(&private->data_mutex); + if (private->monitor_other_updated) + scarlett2_update_monitor_other(mixer); + ucontrol->value.enumerated.item[0] = private->direct_monitor_switch; + mutex_unlock(&private->data_mutex); + + return 0; +} + +static int scarlett2_direct_monitor_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->direct_monitor_switch; + val = min(ucontrol->value.enumerated.item[0], 2U); + + if (oval == val) + goto unlock; + + private->direct_monitor_switch = val; + + /* Send switch change to the device */ + err = scarlett2_usb_set_config( + mixer, SCARLETT2_CONFIG_DIRECT_MONITOR, index, val); + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +static int scarlett2_direct_monitor_stereo_enum_ctl_info( + struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) +{ + static const char *const values[3] = { + "Off", "Mono", "Stereo" + }; + + return snd_ctl_enum_info(uinfo, 1, 3, values); +} + +/* Direct Monitor for Solo is mono-only and only needs a boolean control + * Direct Monitor for 2i2 is selectable between Off/Mono/Stereo + */ +static const struct snd_kcontrol_new scarlett2_direct_monitor_ctl[2] = { + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "", + .info = snd_ctl_boolean_mono_info, + .get = scarlett2_direct_monitor_ctl_get, + .put = scarlett2_direct_monitor_ctl_put, + }, + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "", + .info = scarlett2_direct_monitor_stereo_enum_ctl_info, + .get = scarlett2_direct_monitor_ctl_get, + .put = scarlett2_direct_monitor_ctl_put, + } +}; + +static int scarlett2_add_direct_monitor_ctl(struct usb_mixer_interface *mixer) +{ + struct scarlett2_data *private = mixer->private_data; + const struct scarlett2_device_info *info = private->info; + + if (!info->direct_monitor) + return 0; + + return scarlett2_add_new_ctl( + mixer, &scarlett2_direct_monitor_ctl[info->direct_monitor - 1], + 0, 1, "Direct Monitor Playback Switch", + &private->direct_monitor_ctl); +} + /*** Dim/Mute Controls ***/ static int scarlett2_dim_mute_ctl_get(struct snd_kcontrol *kctl, @@ -2988,6 +3110,10 @@ static int scarlett2_read_configs(struct usb_mixer_interface *mixer) if (err < 0) return err; + err = scarlett2_update_monitor_other(mixer); + if (err < 0) + return err; + /* the rest of the configuration is for devices with a mixer */ if (!info->has_mixer) return 0; @@ -3129,6 +3255,20 @@ static void scarlett2_notify_input_other( &private->phantom_ctls[i]->id); } +/* Notify on "monitor other" change (direct monitor) */ +static void scarlett2_notify_monitor_other( + struct usb_mixer_interface *mixer) +{ + struct scarlett2_data *private = mixer->private_data; + struct snd_card *card = mixer->chip->card; + + private->monitor_other_updated = 1; + + if (private->info->direct_monitor) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, + &private->direct_monitor_ctl->id); +} + /* Interrupt callback */ static void scarlett2_notify(struct urb *urb) { @@ -3149,6 +3289,8 @@ static void scarlett2_notify(struct urb *urb) scarlett2_notify_dim_mute(mixer); if (data & SCARLETT2_USB_NOTIFY_INPUT_OTHER) scarlett2_notify_input_other(mixer); + if (data & SCARLETT2_USB_NOTIFY_MONITOR_OTHER) + scarlett2_notify_monitor_other(mixer); requeue: if (ustatus != -ENOENT && @@ -3255,6 +3397,11 @@ static int snd_scarlett_gen2_controls_create(struct usb_mixer_interface *mixer) if (err < 0) return err; + /* Create the direct monitor control */ + err = scarlett2_add_direct_monitor_ctl(mixer); + if (err < 0) + return err; + /* Set up the interrupt polling */ err = scarlett2_init_notify(mixer); if (err < 0)