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Diffstat (limited to 'sound/usb/mixer_scarlett2.c')
| -rw-r--r-- | sound/usb/mixer_scarlett2.c | 4391 |
1 files changed, 4391 insertions, 0 deletions
diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c new file mode 100644 index 000000000..bcb8b7617 --- /dev/null +++ b/sound/usb/mixer_scarlett2.c @@ -0,0 +1,4391 @@ +// 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 meters (sum of output port counts) */ +#define SCARLETT2_MAX_METERS 65 + +/* There are three different sets of configuration parameters across + * the devices + */ +enum { + SCARLETT2_CONFIG_SET_NO_MIXER = 0, + SCARLETT2_CONFIG_SET_GEN_2 = 1, + SCARLETT2_CONFIG_SET_GEN_3 = 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; +}; + +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]; + + /* 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]; +}; + +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; + 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; + 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 }, + } }, +}; + +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 }, + } }, +}; + +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 }, + } }, +}; + +static const struct scarlett2_device_info solo_gen3_info = { + .has_msd_mode = 1, + .config_set = SCARLETT2_CONFIG_SET_NO_MIXER, + .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_NO_MIXER, + .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_3, + .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 }, + } }, +}; + +static const struct scarlett2_device_info s8i6_gen3_info = { + .has_msd_mode = 1, + .config_set = SCARLETT2_CONFIG_SET_GEN_3, + .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 }, + } }, +}; + +static const struct scarlett2_device_info s18i8_gen3_info = { + .has_msd_mode = 1, + .config_set = SCARLETT2_CONFIG_SET_GEN_3, + .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_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 }, + } }, +}; + +static const struct scarlett2_device_info s18i20_gen3_info = { + .has_msd_mode = 1, + .config_set = SCARLETT2_CONFIG_SET_GEN_3, + .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 }, + } }, +}; + +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 }, + } }, +}; + +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 }, + } }, +}; + +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 }, + } }, +}; + +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] = + +/* Devices without a mixer (Gen 3 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 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: 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); + + int err = scarlett2_usb(mixer, SCARLETT2_USB_DATA_CMD, + &req, sizeof(u32), + NULL, 0); + if (err < 0) + usb_audio_err(mixer->chip, "config save failed: %d\n", err); +} + +/* 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; + + err = scarlett2_usb_get(mixer, offset, &tmp, 1); + if (err < 0) + return err; + + 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; +} + +/* 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])); + + 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; + } + + 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; + u32 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] = 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; +} + +/*** 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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->sync_updated) { + err = scarlett2_update_sync(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.enumerated.item[0] = private->sync; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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_NO_MIXER) + 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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->vol_updated) { + err = scarlett2_update_volumes(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = private->master_vol; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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); + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->vol_updated) { + err = scarlett2_update_volumes(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = private->vol[index]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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); + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->vol_updated) { + err = scarlett2_update_volumes(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = private->mute_switch[index]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->input_other_updated) { + err = scarlett2_update_input_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.enumerated.item[0] = private->level_switch[index]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->input_other_updated) { + err = scarlett2_update_input_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = + private->pad_switch[elem->control]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->input_other_updated) { + err = scarlett2_update_input_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = private->air_switch[elem->control]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->input_other_updated) { + err = scarlett2_update_input_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = + private->phantom_switch[elem->control]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->monitor_other_updated) { + err = scarlett2_update_monitor_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.enumerated.item[0] = private->direct_monitor_switch; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->monitor_other_updated) { + err = scarlett2_update_monitor_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.enumerated.item[0] = private->speaker_switching_switch; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +/* 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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->monitor_other_updated) { + err = scarlett2_update_monitor_other(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.enumerated.item[0] = private->talkback_switch; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->vol_updated) { + err = scarlett2_update_volumes(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.integer.value[0] = private->dim_mute[elem->control]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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++) { + snprintf(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; + + snprintf(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 = clamp(ucontrol->value.integer.value[0], + 0L, (long)SCARLETT2_MIXER_MAX_VALUE); + 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); + int err = 0; + + mutex_lock(&private->data_mutex); + + if (private->mux_updated) { + err = scarlett2_usb_get_mux(mixer); + if (err < 0) + goto unlock; + } + ucontrol->value.enumerated.item[0] = private->mux[index]; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +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; + 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; + + for (i = 0; i < elem->channels; i++) + ucontrol->value.integer.value[i] = meter_levels[i]; + + 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_NO_MIXER) + 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_NO_MIXER) + 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 buf[24]; + 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, buf, sizeof(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; + return scarlett2_usb(mixer, SCARLETT2_USB_INIT_2, NULL, 0, NULL, 84); +} + +/* 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_NO_MIXER) + 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; + + /* 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; +} |