| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Geoffrey D. Bennett | 18489 | 88.94% | 70 | 60.87% |
| Daniel Mack | 803 | 3.86% | 8 | 6.96% |
| Christian Colglazier | 430 | 2.07% | 1 | 0.87% |
| Takashi Iwai | 340 | 1.64% | 14 | 12.17% |
| Jaroslav Kysela | 320 | 1.54% | 2 | 1.74% |
| Jussi Laako | 165 | 0.79% | 1 | 0.87% |
| Clemens Ladisch | 94 | 0.45% | 4 | 3.48% |
| Mark Hills | 50 | 0.24% | 1 | 0.87% |
| Gustavo A. R. Silva | 24 | 0.12% | 1 | 0.87% |
| Felix Homann | 21 | 0.10% | 1 | 0.87% |
| Nathan Chancellor | 20 | 0.10% | 1 | 0.87% |
| Oliver Neukum | 9 | 0.04% | 2 | 1.74% |
| Chris J Arges | 8 | 0.04% | 1 | 0.87% |
| Eldad Zack | 6 | 0.03% | 1 | 0.87% |
| Stephen Rothwell | 3 | 0.01% | 1 | 0.87% |
| Greg Kroah-Hartman | 2 | 0.01% | 1 | 0.87% |
| Joe Perches | 1 | 0.00% | 1 | 0.87% |
| Pierre-Louis Bossart | 1 | 0.00% | 1 | 0.87% |
| Peter Ujfalusi | 1 | 0.00% | 1 | 0.87% |
| Przemek Rudy | 1 | 0.00% | 1 | 0.87% |
| kbuild test robot | 1 | 0.00% | 1 | 0.87% |
| Total | 20789 | 115 |
// SPDX-License-Identifier: GPL-2.0 /* * Focusrite Scarlett 2 Protocol Driver for ALSA * (including Scarlett 2nd Gen, 3rd Gen, Clarett USB, and Clarett+ * series products) * * Supported models: * - 6i6/18i8/18i20 Gen 2 * - Solo/2i2/4i4/8i6/18i8/18i20 Gen 3 * - Clarett 2Pre/4Pre/8Pre USB * - Clarett+ 2Pre/4Pre/8Pre * * Copyright (c) 2018-2023 by Geoffrey D. Bennett <g at b4.vu> * Copyright (c) 2020-2021 by Vladimir Sadovnikov <sadko4u@gmail.com> * Copyright (c) 2022 by Christian Colglazier <christian@cacolglazier.com> * * Based on the Scarlett (Gen 1) Driver for ALSA: * * Copyright (c) 2013 by Tobias Hoffmann * Copyright (c) 2013 by Robin Gareus <robin at gareus.org> * Copyright (c) 2002 by Takashi Iwai <tiwai at suse.de> * Copyright (c) 2014 by Chris J Arges <chris.j.arges at canonical.com> * * Many codes borrowed from audio.c by * Alan Cox (alan at lxorguk.ukuu.org.uk) * Thomas Sailer (sailer at ife.ee.ethz.ch) * * Code cleanup: * David Henningsson <david.henningsson at canonical.com> */ /* The protocol was reverse engineered by looking at the communication * between Focusrite Control 2.3.4 and the Focusrite(R) Scarlett 18i20 * (firmware 1083) using usbmon in July-August 2018. * * Scarlett 18i8 support added in April 2019. * * Scarlett 6i6 support added in June 2019 (thanks to Martin Wittmann * for providing usbmon output and testing). * * Scarlett 4i4/8i6 Gen 3 support added in May 2020 (thanks to Laurent * Debricon for donating a 4i4 and to Fredrik Unger for providing 8i6 * usbmon output and testing). * * Scarlett 18i8/18i20 Gen 3 support added in June 2020 (thanks to * Darren Jaeckel, Alex Sedlack, and Clovis Lunel for providing usbmon * output, protocol traces and testing). * * Support for loading mixer volume and mux configuration from the * interface during driver initialisation added in May 2021 (thanks to * Vladimir Sadovnikov for figuring out how). * * Support for Solo/2i2 Gen 3 added in May 2021 (thanks to Alexander * Vorona for 2i2 protocol traces). * * Support for phantom power, direct monitoring, speaker switching, * and talkback added in May-June 2021. * * Support for Clarett+ 8Pre added in Aug 2022 by Christian * Colglazier. * * Support for Clarett 8Pre USB added in Sep 2023 (thanks to Philippe * Perrot for confirmation). * * Support for Clarett+ 4Pre and 2Pre added in Sep 2023 (thanks to * Gregory Rozzo for donating a 4Pre, and David Sherwood and Patrice * Peterson for usbmon output). * * Support for Clarett 2Pre and 4Pre USB added in Oct 2023. * * This ALSA mixer gives access to (model-dependent): * - input, output, mixer-matrix muxes * - mixer-matrix gain stages * - gain/volume/mute controls * - level meters * - line/inst level, pad, and air controls * - phantom power, direct monitor, speaker switching, and talkback * controls * - disable/enable MSD mode * - disable/enable standalone mode * * <ditaa> * /--------------\ 18chn 20chn /--------------\ * | Hardware in +--+------\ /-------------+--+ ALSA PCM out | * \--------------/ | | | | \--------------/ * | | | /-----\ | * | | | | | | * | v v v | | * | +---------------+ | | * | \ Matrix Mux / | | * | +-----+-----+ | | * | | | | * | |18chn | | * | | | | * | | 10chn| | * | v | | * | +------------+ | | * | | Mixer | | | * | | Matrix | | | * | | | | | * | | 18x10 Gain | | | * | | stages | | | * | +-----+------+ | | * | | | | * |18chn |10chn | |20chn * | | | | * | +----------/ | * | | | * v v v * =========================== * +---------------+ +--—------------+ * \ Output Mux / \ Capture Mux / * +---+---+---+ +-----+-----+ * | | | * 10chn| | |18chn * | | | * /--------------\ | | | /--------------\ * | S/PDIF, ADAT |<--/ |10chn \-->| ALSA PCM in | * | Hardware out | | \--------------/ * \--------------/ | * v * +-------------+ Software gain per channel. * | Master Gain |<-- 18i20 only: Switch per channel * +------+------+ to select HW or SW gain control. * | * |10chn * /--------------\ | * | Analogue |<------/ * | Hardware out | * \--------------/ * </ditaa> * * Gen 3 devices have a Mass Storage Device (MSD) mode where a small * disk with registration and driver download information is presented * to the host. To access the full functionality of the device without * proprietary software, MSD mode can be disabled by: * - holding down the 48V button for five seconds while powering on * the device, or * - using this driver and alsamixer to change the "MSD Mode" setting * to Off and power-cycling the device */ #include <linux/slab.h> #include <linux/usb.h> #include <linux/moduleparam.h> #include <sound/control.h> #include <sound/tlv.h> #include "usbaudio.h" #include "mixer.h" #include "helper.h" #include "mixer_scarlett2.h" /* device_setup value to allow turning MSD mode back on */ #define SCARLETT2_MSD_ENABLE 0x02 /* device_setup value to disable this mixer driver */ #define SCARLETT2_DISABLE 0x04 /* some gui mixers can't handle negative ctl values */ #define SCARLETT2_VOLUME_BIAS 127 /* mixer range from -80dB to +6dB in 0.5dB steps */ #define SCARLETT2_MIXER_MIN_DB -80 #define SCARLETT2_MIXER_BIAS (-SCARLETT2_MIXER_MIN_DB * 2) #define SCARLETT2_MIXER_MAX_DB 6 #define SCARLETT2_MIXER_MAX_VALUE \ ((SCARLETT2_MIXER_MAX_DB - SCARLETT2_MIXER_MIN_DB) * 2) #define SCARLETT2_MIXER_VALUE_COUNT (SCARLETT2_MIXER_MAX_VALUE + 1) /* map from (dB + 80) * 2 to mixer value * for dB in 0 .. 172: int(8192 * pow(10, ((dB - 160) / 2 / 20))) */ static const u16 scarlett2_mixer_values[SCARLETT2_MIXER_VALUE_COUNT] = { 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 27, 29, 30, 32, 34, 36, 38, 41, 43, 46, 48, 51, 54, 57, 61, 65, 68, 73, 77, 81, 86, 91, 97, 103, 109, 115, 122, 129, 137, 145, 154, 163, 173, 183, 194, 205, 217, 230, 244, 259, 274, 290, 307, 326, 345, 365, 387, 410, 434, 460, 487, 516, 547, 579, 614, 650, 689, 730, 773, 819, 867, 919, 973, 1031, 1092, 1157, 1225, 1298, 1375, 1456, 1543, 1634, 1731, 1833, 1942, 2057, 2179, 2308, 2445, 2590, 2744, 2906, 3078, 3261, 3454, 3659, 3876, 4105, 4349, 4606, 4879, 5168, 5475, 5799, 6143, 6507, 6892, 7301, 7733, 8192, 8677, 9191, 9736, 10313, 10924, 11571, 12257, 12983, 13752, 14567, 15430, 16345 }; /* Maximum number of analogue outputs */ #define SCARLETT2_ANALOGUE_MAX 10 /* Maximum number of level and pad switches */ #define SCARLETT2_LEVEL_SWITCH_MAX 2 #define SCARLETT2_PAD_SWITCH_MAX 8 #define SCARLETT2_AIR_SWITCH_MAX 8 #define SCARLETT2_PHANTOM_SWITCH_MAX 2 /* Maximum number of inputs to the mixer */ #define SCARLETT2_INPUT_MIX_MAX 25 /* Maximum number of outputs from the mixer */ #define SCARLETT2_OUTPUT_MIX_MAX 12 /* Maximum size of the data in the USB mux assignment message: * 20 inputs, 20 outputs, 25 matrix inputs, 12 spare */ #define SCARLETT2_MUX_MAX 77 /* Maximum number of sources (sum of input port counts) */ #define SCARLETT2_MAX_SRCS 52 /* Maximum number of meters (sum of output port counts) */ #define SCARLETT2_MAX_METERS 65 /* There are different sets of configuration parameters across the * devices, dependent on series and model. */ enum { SCARLETT2_CONFIG_SET_GEN_2 = 0, SCARLETT2_CONFIG_SET_GEN_3A = 1, SCARLETT2_CONFIG_SET_GEN_3B = 2, SCARLETT2_CONFIG_SET_CLARETT = 3, SCARLETT2_CONFIG_SET_COUNT = 4 }; /* Hardware port types: * - None (no input to mux) * - Analogue I/O * - S/PDIF I/O * - ADAT I/O * - Mixer I/O * - PCM I/O */ enum { SCARLETT2_PORT_TYPE_NONE = 0, SCARLETT2_PORT_TYPE_ANALOGUE = 1, SCARLETT2_PORT_TYPE_SPDIF = 2, SCARLETT2_PORT_TYPE_ADAT = 3, SCARLETT2_PORT_TYPE_MIX = 4, SCARLETT2_PORT_TYPE_PCM = 5, SCARLETT2_PORT_TYPE_COUNT = 6, }; /* I/O count of each port type kept in struct scarlett2_ports */ enum { SCARLETT2_PORT_IN = 0, SCARLETT2_PORT_OUT = 1, SCARLETT2_PORT_DIRNS = 2, }; /* Dim/Mute buttons on the 18i20 */ 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 Playback Switch", "Dim Playback Switch" }; /* Description of each hardware port type: * - id: hardware ID of this port type * - src_descr: printf format string for mux input selections * - src_num_offset: added to channel number for the fprintf * - dst_descr: printf format string for mixer controls */ struct scarlett2_port { u16 id; const char * const src_descr; int src_num_offset; const char * const dst_descr; }; static const struct scarlett2_port scarlett2_ports[SCARLETT2_PORT_TYPE_COUNT] = { [SCARLETT2_PORT_TYPE_NONE] = { .id = 0x000, .src_descr = "Off" }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { .id = 0x080, .src_descr = "Analogue %d", .src_num_offset = 1, .dst_descr = "Analogue Output %02d Playback" }, [SCARLETT2_PORT_TYPE_SPDIF] = { .id = 0x180, .src_descr = "S/PDIF %d", .src_num_offset = 1, .dst_descr = "S/PDIF Output %d Playback" }, [SCARLETT2_PORT_TYPE_ADAT] = { .id = 0x200, .src_descr = "ADAT %d", .src_num_offset = 1, .dst_descr = "ADAT Output %d Playback" }, [SCARLETT2_PORT_TYPE_MIX] = { .id = 0x300, .src_descr = "Mix %c", .src_num_offset = 'A', .dst_descr = "Mixer Input %02d Capture" }, [SCARLETT2_PORT_TYPE_PCM] = { .id = 0x600, .src_descr = "PCM %d", .src_num_offset = 1, .dst_descr = "PCM %02d Capture" }, }; /* Number of mux tables: one for each band of sample rates * (44.1/48kHz, 88.2/96kHz, and 176.4/176kHz) */ #define SCARLETT2_MUX_TABLES 3 /* Maximum number of entries in a mux table */ #define SCARLETT2_MAX_MUX_ENTRIES 10 /* One entry within mux_assignment defines the port type and range of * ports to add to the set_mux message. The end of the list is marked * with count == 0. */ struct scarlett2_mux_entry { u8 port_type; u8 start; u8 count; }; /* Maximum number of entries in a mux table */ #define SCARLETT2_MAX_METER_ENTRIES 9 /* One entry within meter_assignment defines the range of mux outputs * that consecutive meter entries are mapped to. The end of the list * is marked with count == 0. */ struct scarlett2_meter_entry { u8 start; u8 count; }; struct scarlett2_device_info { /* Gen 3 devices have an internal MSD mode switch that needs * to be disabled in order to access the full functionality of * the device. */ u8 has_msd_mode; /* which set of configuration parameters the device uses */ u8 config_set; /* line out hw volume is sw controlled */ u8 line_out_hw_vol; /* support for main/alt speaker switching */ u8 has_speaker_switching; /* support for talkback microphone */ u8 has_talkback; /* the number of analogue inputs with a software switchable * level control that can be set to line or instrument */ u8 level_input_count; /* the first input with a level control (0-based) */ u8 level_input_first; /* the number of analogue inputs with a software switchable * 10dB pad control */ u8 pad_input_count; /* the number of analogue inputs with a software switchable * "air" control */ u8 air_input_count; /* the number of phantom (48V) software switchable controls */ u8 phantom_count; /* 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; /* remap analogue outputs; 18i8 Gen 3 has "line 3/4" connected * internally to the analogue 7/8 outputs */ u8 line_out_remap_enable; u8 line_out_remap[SCARLETT2_ANALOGUE_MAX]; u8 line_out_unmap[SCARLETT2_ANALOGUE_MAX]; /* additional description for the line out volume controls */ const char * const line_out_descrs[SCARLETT2_ANALOGUE_MAX]; /* number of sources/destinations of each port type */ const int port_count[SCARLETT2_PORT_TYPE_COUNT][SCARLETT2_PORT_DIRNS]; /* layout/order of the entries in the set_mux message */ struct scarlett2_mux_entry mux_assignment[SCARLETT2_MUX_TABLES] [SCARLETT2_MAX_MUX_ENTRIES]; /* map from meter level order returned by * SCARLETT2_USB_GET_METER to index into mux[] entries (same * as the order returned by scarlett2_meter_ctl_get()) */ struct scarlett2_meter_entry meter_map[SCARLETT2_MAX_METER_ENTRIES]; }; struct scarlett2_data { struct usb_mixer_interface *mixer; struct mutex usb_mutex; /* prevent sending concurrent USB requests */ struct mutex data_mutex; /* lock access to this data */ struct delayed_work work; const struct scarlett2_device_info *info; const char *series_name; __u8 bInterfaceNumber; __u8 bEndpointAddress; __u16 wMaxPacketSize; __u8 bInterval; int num_mux_srcs; int num_mux_dsts; u32 firmware_version; u16 scarlett2_seq; u8 sync_updated; u8 vol_updated; u8 input_other_updated; u8 monitor_other_updated; u8 mux_updated; u8 speaker_switching_switched; u8 sync; 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]; u8 air_switch[SCARLETT2_AIR_SWITCH_MAX]; u8 phantom_switch[SCARLETT2_PHANTOM_SWITCH_MAX]; u8 phantom_persistence; u8 direct_monitor_switch; u8 speaker_switching_switch; u8 talkback_switch; u8 talkback_map[SCARLETT2_OUTPUT_MIX_MAX]; u8 msd_switch; u8 standalone_switch; u8 meter_level_map[SCARLETT2_MAX_METERS]; struct snd_kcontrol *sync_ctl; struct snd_kcontrol *master_vol_ctl; struct snd_kcontrol *vol_ctls[SCARLETT2_ANALOGUE_MAX]; struct snd_kcontrol *sw_hw_ctls[SCARLETT2_ANALOGUE_MAX]; struct snd_kcontrol *mute_ctls[SCARLETT2_ANALOGUE_MAX]; struct snd_kcontrol *dim_mute_ctls[SCARLETT2_DIM_MUTE_COUNT]; struct snd_kcontrol *level_ctls[SCARLETT2_LEVEL_SWITCH_MAX]; 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 *mux_ctls[SCARLETT2_MUX_MAX]; struct snd_kcontrol *direct_monitor_ctl; struct snd_kcontrol *speaker_switching_ctl; struct snd_kcontrol *talkback_ctl; u8 mux[SCARLETT2_MUX_MAX]; u8 mix[SCARLETT2_INPUT_MIX_MAX * SCARLETT2_OUTPUT_MIX_MAX]; }; /*** Model-specific data ***/ static const struct scarlett2_device_info s6i6_gen2_info = { .config_set = SCARLETT2_CONFIG_SET_GEN_2, .level_input_count = 2, .pad_input_count = 2, .line_out_descrs = { "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 4, 4 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 18 }, [SCARLETT2_PORT_TYPE_PCM] = { 6, 6 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 6 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 6 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 6 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, } }, .meter_map = { { 24, 6 }, { 0, 24 }, { 0, 0 }, } }; static const struct scarlett2_device_info s18i8_gen2_info = { .config_set = SCARLETT2_CONFIG_SET_GEN_2, .level_input_count = 2, .pad_input_count = 4, .line_out_descrs = { "Monitor L", "Monitor R", "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 8, 6 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 0 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 18 }, [SCARLETT2_PORT_TYPE_PCM] = { 8, 18 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 18 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 6 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 14 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 6 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 10 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 6 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 4 }, { 0, 0, 0 }, } }, .meter_map = { { 26, 18 }, { 0, 26 }, { 0, 0 }, } }; static const struct scarlett2_device_info s18i20_gen2_info = { .config_set = SCARLETT2_CONFIG_SET_GEN_2, .line_out_hw_vol = 1, .line_out_descrs = { "Monitor L", "Monitor R", NULL, NULL, NULL, NULL, "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 8, 10 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 8 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 18 }, [SCARLETT2_PORT_TYPE_PCM] = { 20, 18 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 18 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_ADAT, 0, 8 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 14 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_ADAT, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 10 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 6 }, { 0, 0, 0 }, } }, .meter_map = { { 38, 18 }, { 0, 38 }, { 0, 0 }, } }; static const struct scarlett2_device_info solo_gen3_info = { .has_msd_mode = 1, .config_set = SCARLETT2_CONFIG_SET_GEN_3A, .level_input_count = 1, .level_input_first = 1, .air_input_count = 1, .phantom_count = 1, .inputs_per_phantom = 1, .direct_monitor = 1, }; static const struct scarlett2_device_info s2i2_gen3_info = { .has_msd_mode = 1, .config_set = SCARLETT2_CONFIG_SET_GEN_3A, .level_input_count = 2, .air_input_count = 2, .phantom_count = 1, .inputs_per_phantom = 2, .direct_monitor = 2, }; static const struct scarlett2_device_info s4i4_gen3_info = { .has_msd_mode = 1, .config_set = SCARLETT2_CONFIG_SET_GEN_3B, .level_input_count = 2, .pad_input_count = 2, .air_input_count = 2, .phantom_count = 1, .inputs_per_phantom = 2, .line_out_descrs = { "Monitor L", "Monitor R", "Headphones L", "Headphones R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 4, 4 }, [SCARLETT2_PORT_TYPE_MIX] = { 6, 8 }, [SCARLETT2_PORT_TYPE_PCM] = { 4, 6 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 6 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 8 }, { SCARLETT2_PORT_TYPE_NONE, 0, 16 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 6 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 8 }, { SCARLETT2_PORT_TYPE_NONE, 0, 16 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 6 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 8 }, { SCARLETT2_PORT_TYPE_NONE, 0, 16 }, { 0, 0, 0 }, } }, .meter_map = { { 12, 6 }, { 0, 12 }, { 0, 0 }, } }; static const struct scarlett2_device_info s8i6_gen3_info = { .has_msd_mode = 1, .config_set = SCARLETT2_CONFIG_SET_GEN_3B, .level_input_count = 2, .pad_input_count = 2, .air_input_count = 2, .phantom_count = 1, .inputs_per_phantom = 2, .line_out_descrs = { "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 6, 4 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_MIX] = { 8, 8 }, [SCARLETT2_PORT_TYPE_PCM] = { 6, 10 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 8 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_PCM, 8, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 8 }, { SCARLETT2_PORT_TYPE_NONE, 0, 18 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 8 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_PCM, 8, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 8 }, { SCARLETT2_PORT_TYPE_NONE, 0, 18 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 8 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_PCM, 8, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 8 }, { SCARLETT2_PORT_TYPE_NONE, 0, 18 }, { 0, 0, 0 }, } }, .meter_map = { { 14, 8 }, { 0, 6 }, { 22, 2 }, { 6, 8 }, { 0, 0 }, } }; static const struct scarlett2_device_info s18i8_gen3_info = { .has_msd_mode = 1, .config_set = SCARLETT2_CONFIG_SET_GEN_3B, .line_out_hw_vol = 1, .has_speaker_switching = 1, .level_input_count = 2, .pad_input_count = 4, .air_input_count = 4, .phantom_count = 2, .inputs_per_phantom = 2, .line_out_remap_enable = 1, .line_out_remap = { 0, 1, 6, 7, 2, 3, 4, 5 }, .line_out_unmap = { 0, 1, 4, 5, 6, 7, 2, 3 }, .line_out_descrs = { "Monitor L", "Monitor R", "Alt Monitor L", "Alt Monitor R", "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 8, 8 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 0 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 20 }, [SCARLETT2_PORT_TYPE_PCM] = { 8, 20 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 10 }, { SCARLETT2_PORT_TYPE_PCM, 12, 8 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 6, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 2, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_PCM, 10, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 20 }, { SCARLETT2_PORT_TYPE_NONE, 0, 10 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 10 }, { SCARLETT2_PORT_TYPE_PCM, 12, 4 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 6, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 2, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_PCM, 10, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 20 }, { SCARLETT2_PORT_TYPE_NONE, 0, 10 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 10 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 6, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 2, 4 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 20 }, { SCARLETT2_PORT_TYPE_NONE, 0, 10 }, { 0, 0, 0 }, } }, .meter_map = { { 30, 10 }, { 42, 8 }, { 0, 2 }, { 6, 2 }, { 2, 4 }, { 8, 2 }, { 40, 2 }, { 10, 20 }, { 0, 0 } } }; static const struct scarlett2_device_info s18i20_gen3_info = { .has_msd_mode = 1, .config_set = SCARLETT2_CONFIG_SET_GEN_3B, .line_out_hw_vol = 1, .has_speaker_switching = 1, .has_talkback = 1, .level_input_count = 2, .pad_input_count = 8, .air_input_count = 8, .phantom_count = 2, .inputs_per_phantom = 4, .line_out_descrs = { "Monitor 1 L", "Monitor 1 R", "Monitor 2 L", "Monitor 2 R", NULL, NULL, "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 9, 10 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 8 }, [SCARLETT2_PORT_TYPE_MIX] = { 12, 25 }, [SCARLETT2_PORT_TYPE_PCM] = { 20, 20 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 8 }, { SCARLETT2_PORT_TYPE_PCM, 10, 10 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_ADAT, 0, 8 }, { SCARLETT2_PORT_TYPE_PCM, 8, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 25 }, { SCARLETT2_PORT_TYPE_NONE, 0, 12 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 8 }, { SCARLETT2_PORT_TYPE_PCM, 10, 8 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_ADAT, 0, 8 }, { SCARLETT2_PORT_TYPE_PCM, 8, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 25 }, { SCARLETT2_PORT_TYPE_NONE, 0, 10 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 10 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_NONE, 0, 24 }, { 0, 0, 0 }, } }, .meter_map = { { 45, 8 }, { 55, 10 }, { 0, 20 }, { 53, 2 }, { 20, 25 }, { 0, 0 }, } }; static const struct scarlett2_device_info clarett_2pre_info = { .config_set = SCARLETT2_CONFIG_SET_CLARETT, .line_out_hw_vol = 1, .level_input_count = 2, .air_input_count = 2, .line_out_descrs = { "Monitor L", "Monitor R", "Headphones L", "Headphones R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 2, 4 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 0 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 0 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 18 }, [SCARLETT2_PORT_TYPE_PCM] = { 4, 12 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 12 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 8 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 2 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 4 }, { SCARLETT2_PORT_TYPE_NONE, 0, 26 }, { 0, 0, 0 }, } }, .meter_map = { { 22, 12 }, { 0, 22 }, { 0, 0 } } }; static const struct scarlett2_device_info clarett_4pre_info = { .config_set = SCARLETT2_CONFIG_SET_CLARETT, .line_out_hw_vol = 1, .level_input_count = 2, .air_input_count = 4, .line_out_descrs = { "Monitor L", "Monitor R", "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 8, 6 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 0 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 18 }, [SCARLETT2_PORT_TYPE_PCM] = { 8, 18 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 18 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 6 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 14 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 6 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 12 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 6 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_NONE, 0, 24 }, { 0, 0, 0 }, } }, .meter_map = { { 26, 18 }, { 0, 26 }, { 0, 0 } } }; static const struct scarlett2_device_info clarett_8pre_info = { .config_set = SCARLETT2_CONFIG_SET_CLARETT, .line_out_hw_vol = 1, .level_input_count = 2, .air_input_count = 8, .line_out_descrs = { "Monitor L", "Monitor R", NULL, NULL, NULL, NULL, "Headphones 1 L", "Headphones 1 R", "Headphones 2 L", "Headphones 2 R", }, .port_count = { [SCARLETT2_PORT_TYPE_NONE] = { 1, 0 }, [SCARLETT2_PORT_TYPE_ANALOGUE] = { 8, 10 }, [SCARLETT2_PORT_TYPE_SPDIF] = { 2, 2 }, [SCARLETT2_PORT_TYPE_ADAT] = { 8, 8 }, [SCARLETT2_PORT_TYPE_MIX] = { 10, 18 }, [SCARLETT2_PORT_TYPE_PCM] = { 20, 18 }, }, .mux_assignment = { { { SCARLETT2_PORT_TYPE_PCM, 0, 18 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_ADAT, 0, 8 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 14 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_ADAT, 0, 4 }, { SCARLETT2_PORT_TYPE_MIX, 0, 18 }, { SCARLETT2_PORT_TYPE_NONE, 0, 8 }, { 0, 0, 0 }, }, { { SCARLETT2_PORT_TYPE_PCM, 0, 12 }, { SCARLETT2_PORT_TYPE_ANALOGUE, 0, 10 }, { SCARLETT2_PORT_TYPE_SPDIF, 0, 2 }, { SCARLETT2_PORT_TYPE_NONE, 0, 22 }, { 0, 0, 0 }, } }, .meter_map = { { 38, 18 }, { 0, 38 }, { 0, 0 } } }; struct scarlett2_device_entry { const u32 usb_id; /* USB device identifier */ const struct scarlett2_device_info *info; const char *series_name; }; static const struct scarlett2_device_entry scarlett2_devices[] = { /* Supported Gen 2 devices */ { USB_ID(0x1235, 0x8203), &s6i6_gen2_info, "Scarlett Gen 2" }, { USB_ID(0x1235, 0x8204), &s18i8_gen2_info, "Scarlett Gen 2" }, { USB_ID(0x1235, 0x8201), &s18i20_gen2_info, "Scarlett Gen 2" }, /* Supported Gen 3 devices */ { USB_ID(0x1235, 0x8211), &solo_gen3_info, "Scarlett Gen 3" }, { USB_ID(0x1235, 0x8210), &s2i2_gen3_info, "Scarlett Gen 3" }, { USB_ID(0x1235, 0x8212), &s4i4_gen3_info, "Scarlett Gen 3" }, { USB_ID(0x1235, 0x8213), &s8i6_gen3_info, "Scarlett Gen 3" }, { USB_ID(0x1235, 0x8214), &s18i8_gen3_info, "Scarlett Gen 3" }, { USB_ID(0x1235, 0x8215), &s18i20_gen3_info, "Scarlett Gen 3" }, /* Supported Clarett USB/Clarett+ devices */ { USB_ID(0x1235, 0x8206), &clarett_2pre_info, "Clarett USB" }, { USB_ID(0x1235, 0x8207), &clarett_4pre_info, "Clarett USB" }, { USB_ID(0x1235, 0x8208), &clarett_8pre_info, "Clarett USB" }, { USB_ID(0x1235, 0x820a), &clarett_2pre_info, "Clarett+" }, { USB_ID(0x1235, 0x820b), &clarett_4pre_info, "Clarett+" }, { USB_ID(0x1235, 0x820c), &clarett_8pre_info, "Clarett+" }, /* End of list */ { 0, NULL }, }; /* get the starting port index number for a given port type/direction */ static int scarlett2_get_port_start_num( const int port_count[][SCARLETT2_PORT_DIRNS], int direction, int port_type) { int i, num = 0; for (i = 0; i < port_type; i++) num += port_count[i][direction]; return 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_MONITOR_OTHER 0x01000000 /* Commands for sending/receiving requests/responses */ #define SCARLETT2_USB_CMD_INIT 0 #define SCARLETT2_USB_CMD_REQ 2 #define SCARLETT2_USB_CMD_RESP 3 #define SCARLETT2_USB_INIT_1 0x00000000 #define SCARLETT2_USB_INIT_2 0x00000002 #define SCARLETT2_USB_GET_METER 0x00001001 #define SCARLETT2_USB_GET_MIX 0x00002001 #define SCARLETT2_USB_SET_MIX 0x00002002 #define SCARLETT2_USB_GET_MUX 0x00003001 #define SCARLETT2_USB_SET_MUX 0x00003002 #define SCARLETT2_USB_GET_SYNC 0x00006004 #define SCARLETT2_USB_GET_DATA 0x00800000 #define SCARLETT2_USB_SET_DATA 0x00800001 #define SCARLETT2_USB_DATA_CMD 0x00800002 #define SCARLETT2_USB_CONFIG_SAVE 6 #define SCARLETT2_USB_VOLUME_STATUS_OFFSET 0x31 #define SCARLETT2_USB_METER_LEVELS_GET_MAGIC 1 /* volume status is read together (matches scarlett2_config_items[1]) */ struct scarlett2_usb_volume_status { /* dim/mute buttons */ u8 dim_mute[SCARLETT2_DIM_MUTE_COUNT]; u8 pad1; /* software volume setting */ s16 sw_vol[SCARLETT2_ANALOGUE_MAX]; /* actual volume of output inc. dim (-18dB) */ s16 hw_vol[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]; u8 pad3[6]; /* front panel volume knob */ s16 master_vol; } __packed; /* Configuration parameters that can be read and written */ enum { SCARLETT2_CONFIG_DIM_MUTE = 0, SCARLETT2_CONFIG_LINE_OUT_VOLUME = 1, SCARLETT2_CONFIG_MUTE_SWITCH = 2, SCARLETT2_CONFIG_SW_HW_SWITCH = 3, SCARLETT2_CONFIG_LEVEL_SWITCH = 4, SCARLETT2_CONFIG_PAD_SWITCH = 5, SCARLETT2_CONFIG_MSD_SWITCH = 6, SCARLETT2_CONFIG_AIR_SWITCH = 7, SCARLETT2_CONFIG_STANDALONE_SWITCH = 8, SCARLETT2_CONFIG_PHANTOM_SWITCH = 9, SCARLETT2_CONFIG_PHANTOM_PERSISTENCE = 10, SCARLETT2_CONFIG_DIRECT_MONITOR = 11, SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH = 12, SCARLETT2_CONFIG_MONITOR_OTHER_ENABLE = 13, SCARLETT2_CONFIG_TALKBACK_MAP = 14, SCARLETT2_CONFIG_COUNT = 15 }; /* Location, size, and activation command number for the configuration * parameters. Size is in bits and may be 1, 8, or 16. */ struct scarlett2_config { u8 offset; u8 size; u8 activate; }; static const struct scarlett2_config scarlett2_config_items[SCARLETT2_CONFIG_SET_COUNT] [SCARLETT2_CONFIG_COUNT] = /* Gen 2 devices: 6i6, 18i8, 18i20 */ { { [SCARLETT2_CONFIG_DIM_MUTE] = { .offset = 0x31, .size = 8, .activate = 2 }, [SCARLETT2_CONFIG_LINE_OUT_VOLUME] = { .offset = 0x34, .size = 16, .activate = 1 }, [SCARLETT2_CONFIG_MUTE_SWITCH] = { .offset = 0x5c, .size = 8, .activate = 1 }, [SCARLETT2_CONFIG_SW_HW_SWITCH] = { .offset = 0x66, .size = 8, .activate = 3 }, [SCARLETT2_CONFIG_LEVEL_SWITCH] = { .offset = 0x7c, .size = 8, .activate = 7 }, [SCARLETT2_CONFIG_PAD_SWITCH] = { .offset = 0x84, .size = 8, .activate = 8 }, [SCARLETT2_CONFIG_STANDALONE_SWITCH] = { .offset = 0x8d, .size = 8, .activate = 6 }, /* Gen 3 devices without a mixer (Solo and 2i2) */ }, { [SCARLETT2_CONFIG_MSD_SWITCH] = { .offset = 0x04, .size = 8, .activate = 6 }, [SCARLETT2_CONFIG_PHANTOM_PERSISTENCE] = { .offset = 0x05, .size = 8, .activate = 6 }, [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 }, [SCARLETT2_CONFIG_AIR_SWITCH] = { .offset = 0x09, .size = 1, .activate = 8 }, /* Gen 3 devices: 4i4, 8i6, 18i8, 18i20 */ }, { [SCARLETT2_CONFIG_DIM_MUTE] = { .offset = 0x31, .size = 8, .activate = 2 }, [SCARLETT2_CONFIG_LINE_OUT_VOLUME] = { .offset = 0x34, .size = 16, .activate = 1 }, [SCARLETT2_CONFIG_MUTE_SWITCH] = { .offset = 0x5c, .size = 8, .activate = 1 }, [SCARLETT2_CONFIG_SW_HW_SWITCH] = { .offset = 0x66, .size = 8, .activate = 3 }, [SCARLETT2_CONFIG_LEVEL_SWITCH] = { .offset = 0x7c, .size = 8, .activate = 7 }, [SCARLETT2_CONFIG_PAD_SWITCH] = { .offset = 0x84, .size = 8, .activate = 8 }, [SCARLETT2_CONFIG_AIR_SWITCH] = { .offset = 0x8c, .size = 8, .activate = 8 }, [SCARLETT2_CONFIG_STANDALONE_SWITCH] = { .offset = 0x95, .size = 8, .activate = 6 }, [SCARLETT2_CONFIG_PHANTOM_SWITCH] = { .offset = 0x9c, .size = 1, .activate = 8 }, [SCARLETT2_CONFIG_MSD_SWITCH] = { .offset = 0x9d, .size = 8, .activate = 6 }, [SCARLETT2_CONFIG_PHANTOM_PERSISTENCE] = { .offset = 0x9e, .size = 8, .activate = 6 }, [SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH] = { .offset = 0x9f, .size = 1, .activate = 10 }, [SCARLETT2_CONFIG_MONITOR_OTHER_ENABLE] = { .offset = 0xa0, .size = 1, .activate = 10 }, [SCARLETT2_CONFIG_TALKBACK_MAP] = { .offset = 0xb0, .size = 16, .activate = 10 }, /* Clarett USB and Clarett+ devices: 2Pre, 4Pre, 8Pre */ }, { [SCARLETT2_CONFIG_DIM_MUTE] = { .offset = 0x31, .size = 8, .activate = 2 }, [SCARLETT2_CONFIG_LINE_OUT_VOLUME] = { .offset = 0x34, .size = 16, .activate = 1 }, [SCARLETT2_CONFIG_MUTE_SWITCH] = { .offset = 0x5c, .size = 8, .activate = 1 }, [SCARLETT2_CONFIG_SW_HW_SWITCH] = { .offset = 0x66, .size = 8, .activate = 3 }, [SCARLETT2_CONFIG_LEVEL_SWITCH] = { .offset = 0x7c, .size = 8, .activate = 7 }, [SCARLETT2_CONFIG_AIR_SWITCH] = { .offset = 0x95, .size = 8, .activate = 8 }, [SCARLETT2_CONFIG_STANDALONE_SWITCH] = { .offset = 0x8d, .size = 8, .activate = 6 }, } }; /* proprietary request/response format */ struct scarlett2_usb_packet { __le32 cmd; __le16 size; __le16 seq; __le32 error; __le32 pad; u8 data[]; }; static void scarlett2_fill_request_header(struct scarlett2_data *private, struct scarlett2_usb_packet *req, u32 cmd, u16 req_size) { /* sequence must go up by 1 for each request */ u16 seq = private->scarlett2_seq++; req->cmd = cpu_to_le32(cmd); req->size = cpu_to_le16(req_size); req->seq = cpu_to_le16(seq); req->error = 0; req->pad = 0; } static int scarlett2_usb_tx(struct usb_device *dev, int interface, void *buf, u16 size) { return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SCARLETT2_USB_CMD_REQ, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, 0, interface, buf, size); } static int scarlett2_usb_rx(struct usb_device *dev, int interface, u32 usb_req, void *buf, u16 size) { return snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), usb_req, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 0, interface, buf, size); } /* Send a proprietary format request to the Scarlett interface */ static int scarlett2_usb( struct usb_mixer_interface *mixer, u32 cmd, void *req_data, u16 req_size, void *resp_data, u16 resp_size) { struct scarlett2_data *private = mixer->private_data; struct usb_device *dev = mixer->chip->dev; struct scarlett2_usb_packet *req, *resp = NULL; size_t req_buf_size = struct_size(req, data, req_size); size_t resp_buf_size = struct_size(resp, data, resp_size); int err; req = kmalloc(req_buf_size, GFP_KERNEL); if (!req) { err = -ENOMEM; goto error; } resp = kmalloc(resp_buf_size, GFP_KERNEL); if (!resp) { err = -ENOMEM; goto error; } mutex_lock(&private->usb_mutex); /* build request message and send it */ scarlett2_fill_request_header(private, req, cmd, req_size); if (req_size) memcpy(req->data, req_data, req_size); err = scarlett2_usb_tx(dev, private->bInterfaceNumber, req, req_buf_size); if (err != req_buf_size) { usb_audio_err( mixer->chip, "%s USB request result cmd %x was %d\n", private->series_name, cmd, err); err = -EINVAL; goto unlock; } /* send a second message to get the response */ err = scarlett2_usb_rx(dev, private->bInterfaceNumber, SCARLETT2_USB_CMD_RESP, resp, resp_buf_size); /* validate the response */ if (err != resp_buf_size) { usb_audio_err( mixer->chip, "%s USB response result cmd %x was %d expected %zu\n", private->series_name, cmd, err, resp_buf_size); err = -EINVAL; goto unlock; } /* cmd/seq/size should match except when initialising * seq sent = 1, response = 0 */ if (resp->cmd != req->cmd || (resp->seq != req->seq && (le16_to_cpu(req->seq) != 1 || resp->seq != 0)) || resp_size != le16_to_cpu(resp->size) || resp->error || resp->pad) { usb_audio_err( mixer->chip, "%s USB invalid response; " "cmd tx/rx %d/%d seq %d/%d size %d/%d " "error %d pad %d\n", private->series_name, le32_to_cpu(req->cmd), le32_to_cpu(resp->cmd), le16_to_cpu(req->seq), le16_to_cpu(resp->seq), resp_size, le16_to_cpu(resp->size), le32_to_cpu(resp->error), le32_to_cpu(resp->pad)); err = -EINVAL; goto unlock; } if (resp_data && resp_size > 0) memcpy(resp_data, resp->data, resp_size); unlock: mutex_unlock(&private->usb_mutex); error: kfree(req); kfree(resp); return err; } /* Send a USB message to get data; result placed in *buf */ static int scarlett2_usb_get( struct usb_mixer_interface *mixer, int offset, void *buf, int size) { struct { __le32 offset; __le32 size; } __packed req; req.offset = cpu_to_le32(offset); req.size = cpu_to_le32(size); return scarlett2_usb(mixer, SCARLETT2_USB_GET_DATA, &req, sizeof(req), buf, size); } /* Send a USB message to get configuration parameters; result placed in *buf */ static int scarlett2_usb_get_config( struct usb_mixer_interface *mixer, int config_item_num, int count, void *buf) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const struct scarlett2_config *config_item = &scarlett2_config_items[info->config_set][config_item_num]; int size, err, i; u8 *buf_8; u8 value; /* For byte-sized parameters, retrieve directly into buf */ if (config_item->size >= 8) { size = config_item->size / 8 * count; err = scarlett2_usb_get(mixer, config_item->offset, buf, size); if (err < 0) return err; if (size == 2) { u16 *buf_16 = buf; for (i = 0; i < count; i++, buf_16++) *buf_16 = le16_to_cpu(*(__le16 *)buf_16); } return 0; } /* For bit-sized parameters, retrieve into value */ err = scarlett2_usb_get(mixer, config_item->offset, &value, 1); if (err < 0) return err; /* then unpack from value into buf[] */ buf_8 = buf; for (i = 0; i < 8 && i < count; i++, value >>= 1) *buf_8++ = value & 1; return 0; } /* Send SCARLETT2_USB_DATA_CMD SCARLETT2_USB_CONFIG_SAVE */ static void scarlett2_config_save(struct usb_mixer_interface *mixer) { __le32 req = cpu_to_le32(SCARLETT2_USB_CONFIG_SAVE); scarlett2_usb(mixer, SCARLETT2_USB_DATA_CMD, &req, sizeof(u32), NULL, 0); } /* Delayed work to save config */ static void scarlett2_config_save_work(struct work_struct *work) { struct scarlett2_data *private = container_of(work, struct scarlett2_data, work.work); scarlett2_config_save(private->mixer); } /* Send a USB message to set a SCARLETT2_CONFIG_* parameter */ static int scarlett2_usb_set_config( struct usb_mixer_interface *mixer, int config_item_num, int index, int value) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const struct scarlett2_config *config_item = &scarlett2_config_items[info->config_set][config_item_num]; struct { __le32 offset; __le32 bytes; __le32 value; } __packed req; __le32 req2; int offset, size; int err; /* Cancel any pending NVRAM save */ cancel_delayed_work_sync(&private->work); /* Convert config_item->size in bits to size in bytes and * calculate offset */ if (config_item->size >= 8) { size = config_item->size / 8; offset = config_item->offset + index * size; /* If updating a bit, retrieve the old value, set/clear the * bit as needed, and update value */ } else { u8 tmp; size = 1; offset = config_item->offset; scarlett2_usb_get(mixer, offset, &tmp, 1); if (value) tmp |= (1 << index); else tmp &= ~(1 << index); value = tmp; } /* Send the configuration parameter data */ req.offset = cpu_to_le32(offset); req.bytes = cpu_to_le32(size); req.value = cpu_to_le32(value); err = scarlett2_usb(mixer, SCARLETT2_USB_SET_DATA, &req, sizeof(u32) * 2 + size, NULL, 0); if (err < 0) return err; /* Activate the change */ req2 = cpu_to_le32(config_item->activate); err = scarlett2_usb(mixer, SCARLETT2_USB_DATA_CMD, &req2, sizeof(req2), NULL, 0); if (err < 0) return err; /* Schedule the change to be written to NVRAM */ if (config_item->activate != SCARLETT2_USB_CONFIG_SAVE) schedule_delayed_work(&private->work, msecs_to_jiffies(2000)); return 0; } /* Send a USB message to get sync status; result placed in *sync */ static int scarlett2_usb_get_sync_status( struct usb_mixer_interface *mixer, u8 *sync) { __le32 data; int err; err = scarlett2_usb(mixer, SCARLETT2_USB_GET_SYNC, NULL, 0, &data, sizeof(data)); if (err < 0) return err; *sync = !!data; return 0; } /* Send a USB message to get volume status; result placed in *buf */ static int scarlett2_usb_get_volume_status( struct usb_mixer_interface *mixer, struct scarlett2_usb_volume_status *buf) { return scarlett2_usb_get(mixer, SCARLETT2_USB_VOLUME_STATUS_OFFSET, buf, sizeof(*buf)); } /* Send a USB message to get the volumes for all inputs of one mix * and put the values into private->mix[] */ static int scarlett2_usb_get_mix(struct usb_mixer_interface *mixer, int mix_num) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; int num_mixer_in = info->port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_OUT]; int err, i, j, k; struct { __le16 mix_num; __le16 count; } __packed req; __le16 data[SCARLETT2_INPUT_MIX_MAX]; req.mix_num = cpu_to_le16(mix_num); req.count = cpu_to_le16(num_mixer_in); err = scarlett2_usb(mixer, SCARLETT2_USB_GET_MIX, &req, sizeof(req), data, num_mixer_in * sizeof(u16)); if (err < 0) return err; for (i = 0, j = mix_num * num_mixer_in; i < num_mixer_in; i++, j++) { u16 mixer_value = le16_to_cpu(data[i]); for (k = 0; k < SCARLETT2_MIXER_VALUE_COUNT; k++) if (scarlett2_mixer_values[k] >= mixer_value) break; if (k == SCARLETT2_MIXER_VALUE_COUNT) k = SCARLETT2_MIXER_MAX_VALUE; private->mix[j] = k; } return 0; } /* Send a USB message to set the volumes for all inputs of one mix * (values obtained from private->mix[]) */ static int scarlett2_usb_set_mix(struct usb_mixer_interface *mixer, int mix_num) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; struct { __le16 mix_num; __le16 data[SCARLETT2_INPUT_MIX_MAX]; } __packed req; int i, j; int num_mixer_in = info->port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_OUT]; req.mix_num = cpu_to_le16(mix_num); for (i = 0, j = mix_num * num_mixer_in; i < num_mixer_in; i++, j++) req.data[i] = cpu_to_le16( scarlett2_mixer_values[private->mix[j]] ); return scarlett2_usb(mixer, SCARLETT2_USB_SET_MIX, &req, (num_mixer_in + 1) * sizeof(u16), NULL, 0); } /* Convert a port number index (per info->port_count) to a hardware ID */ static u32 scarlett2_mux_src_num_to_id( const int port_count[][SCARLETT2_PORT_DIRNS], int num) { int port_type; for (port_type = 0; port_type < SCARLETT2_PORT_TYPE_COUNT; port_type++) { if (num < port_count[port_type][SCARLETT2_PORT_IN]) return scarlett2_ports[port_type].id | num; num -= port_count[port_type][SCARLETT2_PORT_IN]; } /* Oops */ return 0; } /* Convert a hardware ID to a port number index */ static u32 scarlett2_mux_id_to_num( const int port_count[][SCARLETT2_PORT_DIRNS], int direction, u32 id) { int port_type; int port_num = 0; for (port_type = 0; port_type < SCARLETT2_PORT_TYPE_COUNT; port_type++) { int base = scarlett2_ports[port_type].id; int count = port_count[port_type][direction]; if (id >= base && id < base + count) return port_num + id - base; port_num += count; } /* Oops */ return -1; } /* Convert one mux entry from the interface and load into private->mux[] */ static void scarlett2_usb_populate_mux(struct scarlett2_data *private, u32 mux_entry) { const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int dst_idx, src_idx; dst_idx = scarlett2_mux_id_to_num(port_count, SCARLETT2_PORT_OUT, mux_entry & 0xFFF); if (dst_idx < 0) return; if (dst_idx >= private->num_mux_dsts) { usb_audio_err(private->mixer->chip, "BUG: scarlett2_mux_id_to_num(%06x, OUT): %d >= %d", mux_entry, dst_idx, private->num_mux_dsts); return; } src_idx = scarlett2_mux_id_to_num(port_count, SCARLETT2_PORT_IN, mux_entry >> 12); if (src_idx < 0) return; if (src_idx >= private->num_mux_srcs) { usb_audio_err(private->mixer->chip, "BUG: scarlett2_mux_id_to_num(%06x, IN): %d >= %d", mux_entry, src_idx, private->num_mux_srcs); return; } private->mux[dst_idx] = src_idx; } /* Update the meter level map * * The meter level data from the interface (SCARLETT2_USB_GET_METER * request) is returned in mux_assignment order, but to avoid exposing * that to userspace, scarlett2_meter_ctl_get() rearranges the data * into scarlett2_ports order using the meter_level_map[] array which * is set up by this function. * * In addition, the meter level data values returned from the * interface are invalid for destinations where: * * - the source is "Off"; therefore we set those values to zero (map * value of 255) * * - the source is assigned to a previous (with respect to the * mux_assignment order) destination; therefore we set those values * to the value previously reported for that source */ static void scarlett2_update_meter_level_map(struct scarlett2_data *private) { const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int line_out_count = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; const struct scarlett2_meter_entry *entry; /* sources already assigned to a destination * value is 255 for None, otherwise the value of i * (index into array returned by * scarlett2_usb_get_meter_levels()) */ u8 seen_src[SCARLETT2_MAX_SRCS] = { 1 }; u8 seen_src_value[SCARLETT2_MAX_SRCS] = { 255 }; /* index in meter_map[] order */ int i = 0; /* go through the meter_map[] entries */ for (entry = info->meter_map; entry->count; entry++) { /* fill in each meter_level_map[] entry */ int j, mux_idx; for (j = 0, mux_idx = entry->start; j < entry->count; i++, j++, mux_idx++) { /* convert mux_idx using line_out_unmap[] */ int map_mux_idx = ( info->line_out_remap_enable && mux_idx < line_out_count ) ? info->line_out_unmap[mux_idx] : mux_idx; /* check which source is connected, and if * that source is already connected elsewhere, * use that existing connection's destination * for this meter entry instead */ int mux_src = private->mux[mux_idx]; if (!seen_src[mux_src]) { seen_src[mux_src] = 1; seen_src_value[mux_src] = i; } private->meter_level_map[map_mux_idx] = seen_src_value[mux_src]; } } } /* Send USB message to get mux inputs and then populate private->mux[] */ static int scarlett2_usb_get_mux(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; int count = private->num_mux_dsts; int err, i; struct { __le16 num; __le16 count; } __packed req; __le32 data[SCARLETT2_MUX_MAX]; private->mux_updated = 0; req.num = 0; req.count = cpu_to_le16(count); err = scarlett2_usb(mixer, SCARLETT2_USB_GET_MUX, &req, sizeof(req), data, count * sizeof(u32)); if (err < 0) return err; for (i = 0; i < count; i++) scarlett2_usb_populate_mux(private, le32_to_cpu(data[i])); scarlett2_update_meter_level_map(private); return 0; } /* Send USB messages to set mux inputs */ static int scarlett2_usb_set_mux(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int table; struct { __le16 pad; __le16 num; __le32 data[SCARLETT2_MUX_MAX]; } __packed req; req.pad = 0; /* set mux settings for each rate */ for (table = 0; table < SCARLETT2_MUX_TABLES; table++) { const struct scarlett2_mux_entry *entry; /* i counts over the output array */ int i = 0, err; req.num = cpu_to_le16(table); /* loop through each entry */ for (entry = info->mux_assignment[table]; entry->count; entry++) { int j; int port_type = entry->port_type; int port_idx = entry->start; int mux_idx = scarlett2_get_port_start_num(port_count, SCARLETT2_PORT_OUT, port_type) + port_idx; int dst_id = scarlett2_ports[port_type].id + port_idx; /* Empty slots */ if (!dst_id) { for (j = 0; j < entry->count; j++) req.data[i++] = 0; continue; } /* Non-empty mux slots use the lower 12 bits * for the destination and next 12 bits for * the source */ for (j = 0; j < entry->count; j++) { int src_id = scarlett2_mux_src_num_to_id( port_count, private->mux[mux_idx++]); req.data[i++] = cpu_to_le32(dst_id | src_id << 12); dst_id++; } } err = scarlett2_usb(mixer, SCARLETT2_USB_SET_MUX, &req, (i + 1) * sizeof(u32), NULL, 0); if (err < 0) return err; } scarlett2_update_meter_level_map(private); return 0; } /* Send USB message to get meter levels */ static int scarlett2_usb_get_meter_levels(struct usb_mixer_interface *mixer, u16 num_meters, u16 *levels) { struct { __le16 pad; __le16 num_meters; __le32 magic; } __packed req; __le32 resp[SCARLETT2_MAX_METERS]; int i, err; req.pad = 0; req.num_meters = cpu_to_le16(num_meters); req.magic = cpu_to_le32(SCARLETT2_USB_METER_LEVELS_GET_MAGIC); err = scarlett2_usb(mixer, SCARLETT2_USB_GET_METER, &req, sizeof(req), resp, num_meters * sizeof(u32)); if (err < 0) return err; /* copy, convert to u16 */ for (i = 0; i < num_meters; i++) levels[i] = le32_to_cpu(resp[i]); return 0; } /*** Control Functions ***/ /* helper function to create a new control */ static int scarlett2_add_new_ctl(struct usb_mixer_interface *mixer, const struct snd_kcontrol_new *ncontrol, int index, int channels, const char *name, struct snd_kcontrol **kctl_return) { struct snd_kcontrol *kctl; struct usb_mixer_elem_info *elem; int err; elem = kzalloc(sizeof(*elem), GFP_KERNEL); if (!elem) return -ENOMEM; /* We set USB_MIXER_BESPOKEN type, so that the core USB mixer code * ignores them for resume and other operations. * Also, the head.id field is set to 0, as we don't use this field. */ elem->head.mixer = mixer; elem->control = index; elem->head.id = 0; elem->channels = channels; elem->val_type = USB_MIXER_BESPOKEN; kctl = snd_ctl_new1(ncontrol, elem); if (!kctl) { kfree(elem); return -ENOMEM; } kctl->private_free = snd_usb_mixer_elem_free; strscpy(kctl->id.name, name, sizeof(kctl->id.name)); err = snd_usb_mixer_add_control(&elem->head, kctl); if (err < 0) return err; if (kctl_return) *kctl_return = kctl; return 0; } /*** Firmware Version Control ***/ static int scarlett2_firmware_version_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; ucontrol->value.integer.value[0] = private->firmware_version; return 0; } static int scarlett2_firmware_version_ctl_info( struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; return 0; } static const struct snd_kcontrol_new scarlett2_firmware_version_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_CARD, .access = SNDRV_CTL_ELEM_ACCESS_READ, .name = "", .info = scarlett2_firmware_version_ctl_info, .get = scarlett2_firmware_version_ctl_get }; static int scarlett2_add_firmware_version_ctl( struct usb_mixer_interface *mixer) { return scarlett2_add_new_ctl(mixer, &scarlett2_firmware_version_ctl, 0, 0, "Firmware Version", NULL); } /*** Sync Control ***/ /* Update sync control after receiving notification that the status * has changed */ static int scarlett2_update_sync(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; private->sync_updated = 0; return scarlett2_usb_get_sync_status(mixer, &private->sync); } static int scarlett2_sync_ctl_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { static const char *texts[2] = { "Unlocked", "Locked" }; return snd_ctl_enum_info(uinfo, 1, 2, texts); } static int scarlett2_sync_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; mutex_lock(&private->data_mutex); if (private->sync_updated) scarlett2_update_sync(mixer); ucontrol->value.enumerated.item[0] = private->sync; mutex_unlock(&private->data_mutex); return 0; } static const struct snd_kcontrol_new scarlett2_sync_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .access = SNDRV_CTL_ELEM_ACCESS_READ, .name = "", .info = scarlett2_sync_ctl_info, .get = scarlett2_sync_ctl_get }; static int scarlett2_add_sync_ctl(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; /* devices without a mixer also don't support reporting sync status */ if (private->info->config_set == SCARLETT2_CONFIG_SET_GEN_3A) return 0; return scarlett2_add_new_ctl(mixer, &scarlett2_sync_ctl, 0, 1, "Sync Status", &private->sync_ctl); } /*** Analogue Line Out Volume Controls ***/ /* Update hardware volume controls after receiving notification that * they have changed */ static int scarlett2_update_volumes(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; struct scarlett2_usb_volume_status volume_status; int num_line_out = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; int err, i; int mute; private->vol_updated = 0; err = scarlett2_usb_get_volume_status(mixer, &volume_status); if (err < 0) return err; private->master_vol = clamp( volume_status.master_vol + SCARLETT2_VOLUME_BIAS, 0, SCARLETT2_VOLUME_BIAS); 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; } static int scarlett2_volume_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_VOLUME_BIAS; uinfo->value.integer.step = 1; return 0; } static int scarlett2_master_volume_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; mutex_lock(&private->data_mutex); if (private->vol_updated) scarlett2_update_volumes(mixer); mutex_unlock(&private->data_mutex); ucontrol->value.integer.value[0] = private->master_vol; return 0; } static int line_out_remap(struct scarlett2_data *private, int index) { const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int line_out_count = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; if (!info->line_out_remap_enable) return index; if (index >= line_out_count) return index; return info->line_out_remap[index]; } static int scarlett2_volume_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 index = line_out_remap(private, elem->control); mutex_lock(&private->data_mutex); if (private->vol_updated) scarlett2_update_volumes(mixer); mutex_unlock(&private->data_mutex); ucontrol->value.integer.value[0] = private->vol[index]; return 0; } static int scarlett2_volume_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 = line_out_remap(private, elem->control); int oval, val, err = 0; mutex_lock(&private->data_mutex); oval = private->vol[index]; val = ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->vol[index] = val; err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME, index, val - SCARLETT2_VOLUME_BIAS); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const DECLARE_TLV_DB_MINMAX( db_scale_scarlett2_gain, -SCARLETT2_VOLUME_BIAS * 100, 0 ); static const struct snd_kcontrol_new scarlett2_master_volume_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_TLV_READ, .name = "", .info = scarlett2_volume_ctl_info, .get = scarlett2_master_volume_ctl_get, .private_value = 0, /* max value */ .tlv = { .p = db_scale_scarlett2_gain } }; static const struct snd_kcontrol_new scarlett2_line_out_volume_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, .name = "", .info = scarlett2_volume_ctl_info, .get = scarlett2_volume_ctl_get, .put = scarlett2_volume_ctl_put, .private_value = 0, /* max value */ .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 usb_mixer_interface *mixer = elem->head.mixer; struct scarlett2_data *private = mixer->private_data; int index = line_out_remap(private, elem->control); mutex_lock(&private->data_mutex); if (private->vol_updated) scarlett2_update_volumes(mixer); mutex_unlock(&private->data_mutex); 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 = line_out_remap(private, 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); if (err == 0) err = 1; 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 void scarlett2_sw_hw_ctl_ro(struct scarlett2_data *private, int index) { private->sw_hw_ctls[index]->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_WRITE; } static void scarlett2_sw_hw_ctl_rw(struct scarlett2_data *private, int index) { private->sw_hw_ctls[index]->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_WRITE; } static int scarlett2_sw_hw_enum_ctl_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { static const char *const values[2] = { "SW", "HW" }; return snd_ctl_enum_info(uinfo, 1, 2, values); } static int scarlett2_sw_hw_enum_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 = line_out_remap(private, elem->control); ucontrol->value.enumerated.item[0] = private->vol_sw_hw_switch[index]; return 0; } 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 bits */ if (value) { private->vol_ctls[index]->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_WRITE; 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 and possible value change */ snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO, &private->vol_ctls[index]->id); snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO, &private->mute_ctls[index]->id); } static int scarlett2_sw_hw_change(struct usb_mixer_interface *mixer, int ctl_index, int val) { struct scarlett2_data *private = mixer->private_data; int index = line_out_remap(private, ctl_index); int err; private->vol_sw_hw_switch[index] = val; /* Change access mode to RO (hardware controlled volume) * or RW (software controlled volume) */ scarlett2_vol_ctl_set_writable(mixer, ctl_index, !val); /* 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( mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME, index, private->master_vol - SCARLETT2_VOLUME_BIAS); if (err < 0) return err; /* 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) return err; /* Send SW/HW switch change to the device */ return scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_SW_HW_SWITCH, index, val); } static int scarlett2_sw_hw_enum_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 ctl_index = elem->control; int index = line_out_remap(private, ctl_index); int oval, val, err = 0; mutex_lock(&private->data_mutex); oval = private->vol_sw_hw_switch[index]; val = !!ucontrol->value.enumerated.item[0]; if (oval == val) goto unlock; err = scarlett2_sw_hw_change(mixer, ctl_index, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_sw_hw_enum_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = scarlett2_sw_hw_enum_ctl_info, .get = scarlett2_sw_hw_enum_ctl_get, .put = scarlett2_sw_hw_enum_ctl_put, }; /*** Line Level/Instrument Level Switch Controls ***/ static int scarlett2_update_input_other(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; private->input_other_updated = 0; if (info->level_input_count) { int err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_LEVEL_SWITCH, info->level_input_count + info->level_input_first, private->level_switch); if (err < 0) return err; } if (info->pad_input_count) { int err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_PAD_SWITCH, info->pad_input_count, private->pad_switch); if (err < 0) return err; } if (info->air_input_count) { int err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_AIR_SWITCH, info->air_input_count, private->air_switch); if (err < 0) return err; } if (info->phantom_count) { int err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_PHANTOM_SWITCH, info->phantom_count, private->phantom_switch); if (err < 0) return err; err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_PHANTOM_PERSISTENCE, 1, &private->phantom_persistence); if (err < 0) return err; } return 0; } static int scarlett2_level_enum_ctl_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { static const char *const values[2] = { "Line", "Inst" }; return snd_ctl_enum_info(uinfo, 1, 2, values); } static int scarlett2_level_enum_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; const struct scarlett2_device_info *info = private->info; int index = elem->control + info->level_input_first; mutex_lock(&private->data_mutex); if (private->input_other_updated) scarlett2_update_input_other(mixer); ucontrol->value.enumerated.item[0] = private->level_switch[index]; mutex_unlock(&private->data_mutex); return 0; } static int scarlett2_level_enum_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; const struct scarlett2_device_info *info = private->info; int index = elem->control + info->level_input_first; int oval, val, err = 0; mutex_lock(&private->data_mutex); oval = private->level_switch[index]; val = !!ucontrol->value.enumerated.item[0]; if (oval == val) goto unlock; private->level_switch[index] = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_LEVEL_SWITCH, index, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_level_enum_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = scarlett2_level_enum_ctl_info, .get = scarlett2_level_enum_ctl_get, .put = scarlett2_level_enum_ctl_put, }; /*** Pad Switch Controls ***/ static int scarlett2_pad_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; mutex_lock(&private->data_mutex); if (private->input_other_updated) scarlett2_update_input_other(mixer); ucontrol->value.integer.value[0] = private->pad_switch[elem->control]; mutex_unlock(&private->data_mutex); return 0; } static int scarlett2_pad_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->pad_switch[index]; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->pad_switch[index] = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_PAD_SWITCH, index, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_pad_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_pad_ctl_get, .put = scarlett2_pad_ctl_put, }; /*** Air Switch Controls ***/ static int scarlett2_air_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; mutex_lock(&private->data_mutex); if (private->input_other_updated) scarlett2_update_input_other(mixer); ucontrol->value.integer.value[0] = private->air_switch[elem->control]; mutex_unlock(&private->data_mutex); return 0; } static int scarlett2_air_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->air_switch[index]; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->air_switch[index] = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_AIR_SWITCH, index, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_air_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_air_ctl_get, .put = scarlett2_air_ctl_put, }; /*** Phantom Switch Controls ***/ static int scarlett2_phantom_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; mutex_lock(&private->data_mutex); if (private->input_other_updated) scarlett2_update_input_other(mixer); ucontrol->value.integer.value[0] = private->phantom_switch[elem->control]; mutex_unlock(&private->data_mutex); return 0; } static int scarlett2_phantom_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->phantom_switch[index]; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->phantom_switch[index] = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_PHANTOM_SWITCH, index, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_phantom_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_phantom_ctl_get, .put = scarlett2_phantom_ctl_put, }; /*** Phantom Persistence Control ***/ static int scarlett2_phantom_persistence_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; ucontrol->value.integer.value[0] = private->phantom_persistence; return 0; } static int scarlett2_phantom_persistence_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->phantom_persistence; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->phantom_persistence = val; /* Send switch change to the device */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_PHANTOM_PERSISTENCE, index, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_phantom_persistence_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_phantom_persistence_ctl_get, .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; int err; /* monitor_other_enable[0] enables speaker switching * monitor_other_enable[1] enables talkback */ u8 monitor_other_enable[2]; /* monitor_other_switch[0] activates the alternate speakers * monitor_other_switch[1] activates talkback */ u8 monitor_other_switch[2]; private->monitor_other_updated = 0; if (info->direct_monitor) return scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_DIRECT_MONITOR, 1, &private->direct_monitor_switch); /* if it doesn't do speaker switching then it also doesn't do * talkback */ if (!info->has_speaker_switching) return 0; err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_ENABLE, 2, monitor_other_enable); if (err < 0) return err; err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH, 2, monitor_other_switch); if (err < 0) return err; if (!monitor_other_enable[0]) private->speaker_switching_switch = 0; else private->speaker_switching_switch = monitor_other_switch[0] + 1; if (info->has_talkback) { const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_mixes = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN]; u16 bitmap; int i; if (!monitor_other_enable[1]) private->talkback_switch = 0; else private->talkback_switch = monitor_other_switch[1] + 1; err = scarlett2_usb_get_config(mixer, SCARLETT2_CONFIG_TALKBACK_MAP, 1, &bitmap); if (err < 0) return err; for (i = 0; i < num_mixes; i++, bitmap >>= 1) private->talkback_map[i] = bitmap & 1; } 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); if (err == 0) err = 1; 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; const char *s; if (!info->direct_monitor) return 0; s = info->direct_monitor == 1 ? "Direct Monitor Playback Switch" : "Direct Monitor Playback Enum"; return scarlett2_add_new_ctl( mixer, &scarlett2_direct_monitor_ctl[info->direct_monitor - 1], 0, 1, s, &private->direct_monitor_ctl); } /*** Speaker Switching Control ***/ static int scarlett2_speaker_switch_enum_ctl_info( struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { static const char *const values[3] = { "Off", "Main", "Alt" }; return snd_ctl_enum_info(uinfo, 1, 3, values); } static int scarlett2_speaker_switch_enum_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; mutex_lock(&private->data_mutex); if (private->monitor_other_updated) scarlett2_update_monitor_other(mixer); ucontrol->value.enumerated.item[0] = private->speaker_switching_switch; mutex_unlock(&private->data_mutex); return 0; } /* when speaker switching gets enabled, switch the main/alt speakers * to HW volume and disable those controls */ static int scarlett2_speaker_switch_enable(struct usb_mixer_interface *mixer) { struct snd_card *card = mixer->chip->card; struct scarlett2_data *private = mixer->private_data; int i, err; for (i = 0; i < 4; i++) { int index = line_out_remap(private, i); /* switch the main/alt speakers to HW volume */ if (!private->vol_sw_hw_switch[index]) { err = scarlett2_sw_hw_change(private->mixer, i, 1); if (err < 0) return err; } /* disable the line out SW/HW switch */ scarlett2_sw_hw_ctl_ro(private, i); snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO, &private->sw_hw_ctls[i]->id); } /* when the next monitor-other notify comes in, update the mux * configuration */ private->speaker_switching_switched = 1; return 0; } /* when speaker switching gets disabled, reenable the hw/sw controls * and invalidate the routing */ static void scarlett2_speaker_switch_disable(struct usb_mixer_interface *mixer) { struct snd_card *card = mixer->chip->card; struct scarlett2_data *private = mixer->private_data; int i; /* enable the line out SW/HW switch */ for (i = 0; i < 4; i++) { scarlett2_sw_hw_ctl_rw(private, i); snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, &private->sw_hw_ctls[i]->id); } /* when the next monitor-other notify comes in, update the mux * configuration */ private->speaker_switching_switched = 1; } static int scarlett2_speaker_switch_enum_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; mutex_lock(&private->data_mutex); oval = private->speaker_switching_switch; val = min(ucontrol->value.enumerated.item[0], 2U); if (oval == val) goto unlock; private->speaker_switching_switch = val; /* enable/disable speaker switching */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_ENABLE, 0, !!val); if (err < 0) goto unlock; /* if speaker switching is enabled, select main or alt */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH, 0, val == 2); if (err < 0) goto unlock; /* update controls if speaker switching gets enabled or disabled */ if (!oval && val) err = scarlett2_speaker_switch_enable(mixer); else if (oval && !val) scarlett2_speaker_switch_disable(mixer); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_speaker_switch_enum_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = scarlett2_speaker_switch_enum_ctl_info, .get = scarlett2_speaker_switch_enum_ctl_get, .put = scarlett2_speaker_switch_enum_ctl_put, }; static int scarlett2_add_speaker_switch_ctl( struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; if (!info->has_speaker_switching) return 0; return scarlett2_add_new_ctl( mixer, &scarlett2_speaker_switch_enum_ctl, 0, 1, "Speaker Switching Playback Enum", &private->speaker_switching_ctl); } /*** Talkback and Talkback Map Controls ***/ static int scarlett2_talkback_enum_ctl_info( struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { static const char *const values[3] = { "Disabled", "Off", "On" }; return snd_ctl_enum_info(uinfo, 1, 3, values); } static int scarlett2_talkback_enum_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; mutex_lock(&private->data_mutex); if (private->monitor_other_updated) scarlett2_update_monitor_other(mixer); ucontrol->value.enumerated.item[0] = private->talkback_switch; mutex_unlock(&private->data_mutex); return 0; } static int scarlett2_talkback_enum_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; mutex_lock(&private->data_mutex); oval = private->talkback_switch; val = min(ucontrol->value.enumerated.item[0], 2U); if (oval == val) goto unlock; private->talkback_switch = val; /* enable/disable talkback */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_ENABLE, 1, !!val); if (err < 0) goto unlock; /* if talkback is enabled, select main or alt */ err = scarlett2_usb_set_config( mixer, SCARLETT2_CONFIG_MONITOR_OTHER_SWITCH, 1, val == 2); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_talkback_enum_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = scarlett2_talkback_enum_ctl_info, .get = scarlett2_talkback_enum_ctl_get, .put = scarlett2_talkback_enum_ctl_put, }; static int scarlett2_talkback_map_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 index = elem->control; ucontrol->value.integer.value[0] = private->talkback_map[index]; return 0; } static int scarlett2_talkback_map_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; const int (*port_count)[SCARLETT2_PORT_DIRNS] = private->info->port_count; int num_mixes = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN]; int index = elem->control; int oval, val, err = 0, i; u16 bitmap = 0; mutex_lock(&private->data_mutex); oval = private->talkback_map[index]; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->talkback_map[index] = val; for (i = 0; i < num_mixes; i++) bitmap |= private->talkback_map[i] << i; /* Send updated bitmap to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_TALKBACK_MAP, 0, bitmap); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_talkback_map_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_talkback_map_ctl_get, .put = scarlett2_talkback_map_ctl_put, }; static int scarlett2_add_talkback_ctls( struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_mixes = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN]; int err, i; char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; if (!info->has_talkback) return 0; err = scarlett2_add_new_ctl( mixer, &scarlett2_talkback_enum_ctl, 0, 1, "Talkback Playback Enum", &private->talkback_ctl); if (err < 0) return err; for (i = 0; i < num_mixes; i++) { snprintf(s, sizeof(s), "Talkback Mix %c Playback Switch", i + 'A'); err = scarlett2_add_new_ctl(mixer, &scarlett2_talkback_map_ctl, i, 1, s, NULL); if (err < 0) return err; } return 0; } /*** Dim/Mute Controls ***/ static int scarlett2_dim_mute_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; mutex_lock(&private->data_mutex); if (private->vol_updated) scarlett2_update_volumes(mixer); mutex_unlock(&private->data_mutex); ucontrol->value.integer.value[0] = private->dim_mute[elem->control]; return 0; } static int scarlett2_dim_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; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_line_out = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; int index = elem->control; int oval, val, err = 0, i; mutex_lock(&private->data_mutex); oval = private->dim_mute[index]; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->dim_mute[index] = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_DIM_MUTE, index, val); if (err == 0) err = 1; if (index == SCARLETT2_BUTTON_MUTE) for (i = 0; i < num_line_out; i++) { int line_index = line_out_remap(private, i); if (private->vol_sw_hw_switch[line_index]) { private->mute_switch[line_index] = val; snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &private->mute_ctls[i]->id); } } unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_dim_mute_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_dim_mute_ctl_get, .put = scarlett2_dim_mute_ctl_put }; /*** Create the analogue output controls ***/ static int scarlett2_add_line_out_ctls(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_line_out = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; int err, i; char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; /* Add R/O HW volume control */ if (info->line_out_hw_vol) { snprintf(s, sizeof(s), "Master HW Playback Volume"); err = scarlett2_add_new_ctl(mixer, &scarlett2_master_volume_ctl, 0, 1, s, &private->master_vol_ctl); if (err < 0) return err; } /* Add volume controls */ for (i = 0; i < num_line_out; i++) { int index = line_out_remap(private, i); /* Fader */ if (info->line_out_descrs[i]) snprintf(s, sizeof(s), "Line %02d (%s) Playback Volume", i + 1, info->line_out_descrs[i]); else snprintf(s, sizeof(s), "Line %02d Playback Volume", i + 1); err = scarlett2_add_new_ctl(mixer, &scarlett2_line_out_volume_ctl, i, 1, s, &private->vol_ctls[i]); if (err < 0) return err; /* 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[index]) scarlett2_vol_ctl_set_writable(mixer, i, 0); /* SW/HW Switch */ if (info->line_out_hw_vol) { snprintf(s, sizeof(s), "Line Out %02d Volume Control Playback Enum", i + 1); err = scarlett2_add_new_ctl(mixer, &scarlett2_sw_hw_enum_ctl, i, 1, s, &private->sw_hw_ctls[i]); if (err < 0) return err; /* Make the switch read-only if the line is * involved in speaker switching */ if (private->speaker_switching_switch && i < 4) scarlett2_sw_hw_ctl_ro(private, i); } } /* Add dim/mute controls */ if (info->line_out_hw_vol) for (i = 0; i < SCARLETT2_DIM_MUTE_COUNT; i++) { err = scarlett2_add_new_ctl( mixer, &scarlett2_dim_mute_ctl, i, 1, scarlett2_dim_mute_names[i], &private->dim_mute_ctls[i]); if (err < 0) return err; } return 0; } /*** Create the analogue input controls ***/ static int scarlett2_add_line_in_ctls(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; int err, i; char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; const char *fmt = "Line In %d %s Capture %s"; const char *fmt2 = "Line In %d-%d %s Capture %s"; /* Add input level (line/inst) controls */ for (i = 0; i < info->level_input_count; i++) { snprintf(s, sizeof(s), fmt, i + 1 + info->level_input_first, "Level", "Enum"); err = scarlett2_add_new_ctl(mixer, &scarlett2_level_enum_ctl, i, 1, s, &private->level_ctls[i]); if (err < 0) return err; } /* Add input pad controls */ for (i = 0; i < info->pad_input_count; i++) { snprintf(s, sizeof(s), fmt, i + 1, "Pad", "Switch"); err = scarlett2_add_new_ctl(mixer, &scarlett2_pad_ctl, i, 1, s, &private->pad_ctls[i]); if (err < 0) return err; } /* Add input air controls */ for (i = 0; i < info->air_input_count; i++) { snprintf(s, sizeof(s), fmt, i + 1, "Air", "Switch"); err = scarlett2_add_new_ctl(mixer, &scarlett2_air_ctl, i, 1, s, &private->air_ctls[i]); if (err < 0) return err; } /* Add input phantom controls */ if (info->inputs_per_phantom == 1) { for (i = 0; i < info->phantom_count; i++) { scnprintf(s, sizeof(s), fmt, i + 1, "Phantom Power", "Switch"); err = scarlett2_add_new_ctl( mixer, &scarlett2_phantom_ctl, i, 1, s, &private->phantom_ctls[i]); if (err < 0) return err; } } else if (info->inputs_per_phantom > 1) { for (i = 0; i < info->phantom_count; i++) { int from = i * info->inputs_per_phantom + 1; int to = (i + 1) * info->inputs_per_phantom; scnprintf(s, sizeof(s), fmt2, from, to, "Phantom Power", "Switch"); err = scarlett2_add_new_ctl( mixer, &scarlett2_phantom_ctl, i, 1, s, &private->phantom_ctls[i]); if (err < 0) return err; } } if (info->phantom_count) { err = scarlett2_add_new_ctl( mixer, &scarlett2_phantom_persistence_ctl, 0, 1, "Phantom Power Persistence Capture Switch", NULL); if (err < 0) return err; } return 0; } /*** Mixer Volume Controls ***/ static int scarlett2_mixer_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_MIXER_MAX_VALUE; uinfo->value.integer.step = 1; return 0; } static int scarlett2_mixer_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; ucontrol->value.integer.value[0] = private->mix[elem->control]; return 0; } static int scarlett2_mixer_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; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int oval, val, num_mixer_in, mix_num, err = 0; int index = elem->control; mutex_lock(&private->data_mutex); oval = private->mix[index]; val = ucontrol->value.integer.value[0]; num_mixer_in = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_OUT]; mix_num = index / num_mixer_in; if (oval == val) goto unlock; private->mix[index] = val; err = scarlett2_usb_set_mix(mixer, mix_num); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const DECLARE_TLV_DB_MINMAX( db_scale_scarlett2_mixer, SCARLETT2_MIXER_MIN_DB * 100, SCARLETT2_MIXER_MAX_DB * 100 ); static const struct snd_kcontrol_new scarlett2_mixer_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, .name = "", .info = scarlett2_mixer_ctl_info, .get = scarlett2_mixer_ctl_get, .put = scarlett2_mixer_ctl_put, .private_value = SCARLETT2_MIXER_MAX_DB, /* max value */ .tlv = { .p = db_scale_scarlett2_mixer } }; static int scarlett2_add_mixer_ctls(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int err, i, j; int index; char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; int num_inputs = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_OUT]; int num_outputs = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN]; for (i = 0, index = 0; i < num_outputs; i++) for (j = 0; j < num_inputs; j++, index++) { snprintf(s, sizeof(s), "Mix %c Input %02d Playback Volume", 'A' + i, j + 1); err = scarlett2_add_new_ctl(mixer, &scarlett2_mixer_ctl, index, 1, s, NULL); if (err < 0) return err; } return 0; } /*** Mux Source Selection Controls ***/ static int scarlett2_mux_src_enum_ctl_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { struct usb_mixer_elem_info *elem = kctl->private_data; struct scarlett2_data *private = elem->head.mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; unsigned int item = uinfo->value.enumerated.item; int items = private->num_mux_srcs; int port_type; uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = elem->channels; uinfo->value.enumerated.items = items; if (item >= items) item = uinfo->value.enumerated.item = items - 1; for (port_type = 0; port_type < SCARLETT2_PORT_TYPE_COUNT; port_type++) { if (item < port_count[port_type][SCARLETT2_PORT_IN]) { const struct scarlett2_port *port = &scarlett2_ports[port_type]; sprintf(uinfo->value.enumerated.name, port->src_descr, item + port->src_num_offset); return 0; } item -= port_count[port_type][SCARLETT2_PORT_IN]; } return -EINVAL; } static int scarlett2_mux_src_enum_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 index = line_out_remap(private, elem->control); mutex_lock(&private->data_mutex); if (private->mux_updated) scarlett2_usb_get_mux(mixer); ucontrol->value.enumerated.item[0] = private->mux[index]; mutex_unlock(&private->data_mutex); return 0; } static int scarlett2_mux_src_enum_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 = line_out_remap(private, elem->control); int oval, val, err = 0; mutex_lock(&private->data_mutex); oval = private->mux[index]; val = min(ucontrol->value.enumerated.item[0], private->num_mux_srcs - 1U); if (oval == val) goto unlock; private->mux[index] = val; err = scarlett2_usb_set_mux(mixer); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_mux_src_enum_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = scarlett2_mux_src_enum_ctl_info, .get = scarlett2_mux_src_enum_ctl_get, .put = scarlett2_mux_src_enum_ctl_put, }; static int scarlett2_add_mux_enums(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int port_type, channel, i; for (i = 0, port_type = 0; port_type < SCARLETT2_PORT_TYPE_COUNT; port_type++) { for (channel = 0; channel < port_count[port_type][SCARLETT2_PORT_OUT]; channel++, i++) { int err; char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; const char *const descr = scarlett2_ports[port_type].dst_descr; snprintf(s, sizeof(s) - 5, descr, channel + 1); strcat(s, " Enum"); err = scarlett2_add_new_ctl(mixer, &scarlett2_mux_src_enum_ctl, i, 1, s, &private->mux_ctls[i]); if (err < 0) return err; } } return 0; } /*** Meter Controls ***/ static int scarlett2_meter_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 = 4095; uinfo->value.integer.step = 1; return 0; } static int scarlett2_meter_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; u8 *meter_level_map = private->meter_level_map; u16 meter_levels[SCARLETT2_MAX_METERS]; int i, err; err = scarlett2_usb_get_meter_levels(elem->head.mixer, elem->channels, meter_levels); if (err < 0) return err; /* copy & translate from meter_levels[] using meter_level_map[] */ for (i = 0; i < elem->channels; i++) { int idx = meter_level_map[i]; int value; if (idx == 255) value = 0; else value = meter_levels[idx]; ucontrol->value.integer.value[i] = value; } return 0; } static const struct snd_kcontrol_new scarlett2_meter_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, .name = "", .info = scarlett2_meter_ctl_info, .get = scarlett2_meter_ctl_get }; static int scarlett2_add_meter_ctl(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; /* devices without a mixer also don't support reporting levels */ if (private->info->config_set == SCARLETT2_CONFIG_SET_GEN_3A) return 0; return scarlett2_add_new_ctl(mixer, &scarlett2_meter_ctl, 0, private->num_mux_dsts, "Level Meter", NULL); } /*** MSD Controls ***/ static int scarlett2_msd_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; ucontrol->value.integer.value[0] = private->msd_switch; return 0; } static int scarlett2_msd_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; mutex_lock(&private->data_mutex); oval = private->msd_switch; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->msd_switch = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_MSD_SWITCH, 0, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_msd_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_msd_ctl_get, .put = scarlett2_msd_ctl_put, }; static int scarlett2_add_msd_ctl(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; if (!info->has_msd_mode) return 0; /* If MSD mode is off, hide the switch by default */ if (!private->msd_switch && !(mixer->chip->setup & SCARLETT2_MSD_ENABLE)) return 0; /* Add MSD control */ return scarlett2_add_new_ctl(mixer, &scarlett2_msd_ctl, 0, 1, "MSD Mode Switch", NULL); } /*** Standalone Control ***/ static int scarlett2_standalone_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; ucontrol->value.integer.value[0] = private->standalone_switch; return 0; } static int scarlett2_standalone_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; mutex_lock(&private->data_mutex); oval = private->standalone_switch; val = !!ucontrol->value.integer.value[0]; if (oval == val) goto unlock; private->standalone_switch = val; /* Send switch change to the device */ err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_STANDALONE_SWITCH, 0, val); if (err == 0) err = 1; unlock: mutex_unlock(&private->data_mutex); return err; } static const struct snd_kcontrol_new scarlett2_standalone_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", .info = snd_ctl_boolean_mono_info, .get = scarlett2_standalone_ctl_get, .put = scarlett2_standalone_ctl_put, }; static int scarlett2_add_standalone_ctl(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; if (private->info->config_set == SCARLETT2_CONFIG_SET_GEN_3A) return 0; /* Add standalone control */ return scarlett2_add_new_ctl(mixer, &scarlett2_standalone_ctl, 0, 1, "Standalone Switch", NULL); } /*** Cleanup/Suspend Callbacks ***/ static void scarlett2_private_free(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; cancel_delayed_work_sync(&private->work); kfree(private); mixer->private_data = NULL; } static void scarlett2_private_suspend(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; if (cancel_delayed_work_sync(&private->work)) scarlett2_config_save(private->mixer); } /*** Initialisation ***/ static void scarlett2_count_mux_io(struct scarlett2_data *private) { const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int port_type, srcs = 0, dsts = 0; for (port_type = 0; port_type < SCARLETT2_PORT_TYPE_COUNT; port_type++) { srcs += port_count[port_type][SCARLETT2_PORT_IN]; dsts += port_count[port_type][SCARLETT2_PORT_OUT]; } private->num_mux_srcs = srcs; private->num_mux_dsts = dsts; } /* Look through the interface descriptors for the Focusrite Control * interface (bInterfaceClass = 255 Vendor Specific Class) and set * bInterfaceNumber, bEndpointAddress, wMaxPacketSize, and bInterval * in private */ static int scarlett2_find_fc_interface(struct usb_device *dev, struct scarlett2_data *private) { struct usb_host_config *config = dev->actconfig; int i; for (i = 0; i < config->desc.bNumInterfaces; i++) { struct usb_interface *intf = config->interface[i]; struct usb_interface_descriptor *desc = &intf->altsetting[0].desc; struct usb_endpoint_descriptor *epd; if (desc->bInterfaceClass != 255) continue; epd = get_endpoint(intf->altsetting, 0); private->bInterfaceNumber = desc->bInterfaceNumber; private->bEndpointAddress = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; private->wMaxPacketSize = le16_to_cpu(epd->wMaxPacketSize); private->bInterval = epd->bInterval; return 0; } return -EINVAL; } /* Initialise private data */ static int scarlett2_init_private(struct usb_mixer_interface *mixer, const struct scarlett2_device_entry *entry) { struct scarlett2_data *private = kzalloc(sizeof(struct scarlett2_data), GFP_KERNEL); if (!private) return -ENOMEM; mutex_init(&private->usb_mutex); mutex_init(&private->data_mutex); INIT_DELAYED_WORK(&private->work, scarlett2_config_save_work); mixer->private_data = private; mixer->private_free = scarlett2_private_free; mixer->private_suspend = scarlett2_private_suspend; private->info = entry->info; private->series_name = entry->series_name; scarlett2_count_mux_io(private); private->scarlett2_seq = 0; private->mixer = mixer; return scarlett2_find_fc_interface(mixer->chip->dev, private); } /* Cargo cult proprietary initialisation sequence */ static int scarlett2_usb_init(struct usb_mixer_interface *mixer) { struct usb_device *dev = mixer->chip->dev; struct scarlett2_data *private = mixer->private_data; u8 step0_buf[24]; u8 step2_buf[84]; int err; if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) return -EINVAL; /* step 0 */ err = scarlett2_usb_rx(dev, private->bInterfaceNumber, SCARLETT2_USB_CMD_INIT, step0_buf, sizeof(step0_buf)); if (err < 0) return err; /* step 1 */ private->scarlett2_seq = 1; err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_1, NULL, 0, NULL, 0); if (err < 0) return err; /* step 2 */ private->scarlett2_seq = 1; err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_2, NULL, 0, step2_buf, sizeof(step2_buf)); if (err < 0) return err; /* extract 4-byte firmware version from step2_buf[8] */ private->firmware_version = le32_to_cpu(*(__le32 *)(step2_buf + 8)); usb_audio_info(mixer->chip, "Firmware version %d\n", private->firmware_version); return 0; } /* Read configuration from the interface on start */ static int scarlett2_read_configs(struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; const struct scarlett2_device_info *info = private->info; const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_line_out = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; int num_mixer_out = port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN]; struct scarlett2_usb_volume_status volume_status; int err, i; if (info->has_msd_mode) { err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_MSD_SWITCH, 1, &private->msd_switch); if (err < 0) return err; /* no other controls are created if MSD mode is on */ if (private->msd_switch) return 0; } err = scarlett2_update_input_other(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->config_set == SCARLETT2_CONFIG_SET_GEN_3A) return 0; err = scarlett2_usb_get_config( mixer, SCARLETT2_CONFIG_STANDALONE_SWITCH, 1, &private->standalone_switch); if (err < 0) return err; err = scarlett2_update_sync(mixer); if (err < 0) return err; err = scarlett2_usb_get_volume_status(mixer, &volume_status); 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, mute; private->vol_sw_hw_switch[i] = info->line_out_hw_vol && volume_status.sw_hw_switch[i]; volume = private->vol_sw_hw_switch[i] ? volume_status.master_vol : volume_status.sw_vol[i]; volume = clamp(volume + SCARLETT2_VOLUME_BIAS, 0, SCARLETT2_VOLUME_BIAS); private->vol[i] = volume; 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); if (err < 0) return err; } return scarlett2_usb_get_mux(mixer); } /* Notify on sync change */ static void scarlett2_notify_sync( struct usb_mixer_interface *mixer) { struct scarlett2_data *private = mixer->private_data; private->sync_updated = 1; snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &private->sync_ctl->id); } /* Notify on monitor change */ static void scarlett2_notify_monitor( 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 int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_line_out = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; int i; /* if line_out_hw_vol is 0, there are no controls to update */ if (!info->line_out_hw_vol) return; private->vol_updated = 1; snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &private->master_vol_ctl->id); for (i = 0; i < num_line_out; i++) if (private->vol_sw_hw_switch[line_out_remap(private, i)]) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->vol_ctls[i]->id); } /* Notify on dim/mute change */ 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 int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count; int num_line_out = port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT]; int i; private->vol_updated = 1; if (!info->line_out_hw_vol) return; for (i = 0; i < SCARLETT2_DIM_MUTE_COUNT; i++) 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[line_out_remap(private, i)]) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->mute_ctls[i]->id); } /* Notify on "input other" change (level/pad/air) */ static void scarlett2_notify_input_other( 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; private->input_other_updated = 1; for (i = 0; i < info->level_input_count; i++) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->level_ctls[i]->id); for (i = 0; i < info->pad_input_count; i++) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->pad_ctls[i]->id); for (i = 0; i < info->air_input_count; i++) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->air_ctls[i]->id); for (i = 0; i < info->phantom_count; i++) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->phantom_ctls[i]->id); } /* Notify on "monitor other" change (direct monitor, speaker * switching, talkback) */ static void scarlett2_notify_monitor_other( 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; private->monitor_other_updated = 1; if (info->direct_monitor) { snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->direct_monitor_ctl->id); return; } if (info->has_speaker_switching) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->speaker_switching_ctl->id); if (info->has_talkback) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->talkback_ctl->id); /* if speaker switching was recently enabled or disabled, * invalidate the dim/mute and mux enum controls */ if (private->speaker_switching_switched) { int i; scarlett2_notify_dim_mute(mixer); private->speaker_switching_switched = 0; private->mux_updated = 1; for (i = 0; i < private->num_mux_dsts; i++) snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &private->mux_ctls[i]->id); } } /* Interrupt callback */ static void scarlett2_notify(struct urb *urb) { struct usb_mixer_interface *mixer = urb->context; int len = urb->actual_length; int ustatus = urb->status; u32 data; if (ustatus != 0 || len != 8) goto requeue; data = le32_to_cpu(*(__le32 *)urb->transfer_buffer); if (data & SCARLETT2_USB_NOTIFY_SYNC) scarlett2_notify_sync(mixer); if (data & SCARLETT2_USB_NOTIFY_MONITOR) scarlett2_notify_monitor(mixer); if (data & SCARLETT2_USB_NOTIFY_DIM_MUTE) 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 && ustatus != -ECONNRESET && ustatus != -ESHUTDOWN) { urb->dev = mixer->chip->dev; usb_submit_urb(urb, GFP_ATOMIC); } } static int scarlett2_init_notify(struct usb_mixer_interface *mixer) { struct usb_device *dev = mixer->chip->dev; struct scarlett2_data *private = mixer->private_data; unsigned int pipe = usb_rcvintpipe(dev, private->bEndpointAddress); void *transfer_buffer; if (mixer->urb) { usb_audio_err(mixer->chip, "%s: mixer urb already in use!\n", __func__); return 0; } if (usb_pipe_type_check(dev, pipe)) return -EINVAL; mixer->urb = usb_alloc_urb(0, GFP_KERNEL); if (!mixer->urb) return -ENOMEM; transfer_buffer = kmalloc(private->wMaxPacketSize, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; usb_fill_int_urb(mixer->urb, dev, pipe, transfer_buffer, private->wMaxPacketSize, scarlett2_notify, mixer, private->bInterval); return usb_submit_urb(mixer->urb, GFP_KERNEL); } static const struct scarlett2_device_entry *get_scarlett2_device_entry( struct usb_mixer_interface *mixer) { const struct scarlett2_device_entry *entry = scarlett2_devices; /* Find entry in scarlett2_devices */ while (entry->usb_id && entry->usb_id != mixer->chip->usb_id) entry++; if (!entry->usb_id) return NULL; return entry; } static int snd_scarlett2_controls_create( struct usb_mixer_interface *mixer, const struct scarlett2_device_entry *entry) { int err; /* Initialise private data */ err = scarlett2_init_private(mixer, entry); if (err < 0) return err; /* Send proprietary USB initialisation sequence */ err = scarlett2_usb_init(mixer); if (err < 0) return err; /* Add firmware version control */ err = scarlett2_add_firmware_version_ctl(mixer); if (err < 0) return err; /* Read volume levels and controls from the interface */ err = scarlett2_read_configs(mixer); if (err < 0) return err; /* Create the MSD control */ err = scarlett2_add_msd_ctl(mixer); if (err < 0) return err; /* If MSD mode is enabled, don't create any other controls */ if (((struct scarlett2_data *)mixer->private_data)->msd_switch) return 0; /* Create the analogue output controls */ err = scarlett2_add_line_out_ctls(mixer); if (err < 0) return err; /* Create the analogue input controls */ err = scarlett2_add_line_in_ctls(mixer); if (err < 0) return err; /* Create the input, output, and mixer mux input selections */ err = scarlett2_add_mux_enums(mixer); if (err < 0) return err; /* Create the matrix mixer controls */ err = scarlett2_add_mixer_ctls(mixer); if (err < 0) return err; /* Create the level meter controls */ err = scarlett2_add_meter_ctl(mixer); if (err < 0) return err; /* Create the sync control */ err = scarlett2_add_sync_ctl(mixer); if (err < 0) return err; /* Create the direct monitor control */ err = scarlett2_add_direct_monitor_ctl(mixer); if (err < 0) return err; /* Create the speaker switching control */ err = scarlett2_add_speaker_switch_ctl(mixer); if (err < 0) return err; /* Create the talkback controls */ err = scarlett2_add_talkback_ctls(mixer); if (err < 0) return err; /* Create the standalone control */ err = scarlett2_add_standalone_ctl(mixer); if (err < 0) return err; /* Set up the interrupt polling */ err = scarlett2_init_notify(mixer); if (err < 0) return err; return 0; } int snd_scarlett2_init(struct usb_mixer_interface *mixer) { struct snd_usb_audio *chip = mixer->chip; const struct scarlett2_device_entry *entry; int err; /* only use UAC_VERSION_2 */ if (!mixer->protocol) return 0; /* find entry in scarlett2_devices */ entry = get_scarlett2_device_entry(mixer); if (!entry) { usb_audio_err(mixer->chip, "%s: missing device entry for %04x:%04x\n", __func__, USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); return 0; } if (chip->setup & SCARLETT2_DISABLE) { usb_audio_info(chip, "Focusrite %s Mixer Driver disabled " "by modprobe options (snd_usb_audio " "vid=0x%04x pid=0x%04x device_setup=%d)\n", entry->series_name, USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id), SCARLETT2_DISABLE); return 0; } usb_audio_info(chip, "Focusrite %s Mixer Driver enabled (pid=0x%04x); " "report any issues to g@b4.vu", entry->series_name, USB_ID_PRODUCT(chip->usb_id)); err = snd_scarlett2_controls_create(mixer, entry); if (err < 0) usb_audio_err(mixer->chip, "Error initialising %s Mixer Driver: %d", entry->series_name, err); return err; }
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