April 2019 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] [PATCH] spi: Madera codecs: add missing of table registration
by Daniel Gomez 29 Apr '19

29 Apr '19

MODULE_DEVICE_TABLE(of, <of_match_table> should be called to complete DT OF mathing mechanism and register it. Before this patch: modinfo drivers/mfd/madera-spi.ko | grep alias alias: spi:wm1840 alias: spi:cs47l91 alias: spi:cs47l90 alias: spi:cs47l85 alias: spi:cs47l35 After this patch: modinfo drivers/mfd/madera-spi.ko | grep alias alias: spi:wm1840 alias: spi:cs47l91 alias: spi:cs47l90 alias: spi:cs47l85 alias: spi:cs47l35 alias: of:N*T*Ccirrus,wm1840C* alias: of:N*T*Ccirrus,wm1840 alias: of:N*T*Ccirrus,cs47l91C* alias: of:N*T*Ccirrus,cs47l91 alias: of:N*T*Ccirrus,cs47l90C* alias: of:N*T*Ccirrus,cs47l90 alias: of:N*T*Ccirrus,cs47l85C* alias: of:N*T*Ccirrus,cs47l85 alias: of:N*T*Ccirrus,cs47l35C* alias: of:N*T*Ccirrus,cs47l35 Reported-by: Javier Martinez Canillas <javier(a)dowhile0.org> Signed-off-by: Daniel Gomez <dagmcr(a)gmail.com> --- drivers/mfd/madera-spi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mfd/madera-spi.c b/drivers/mfd/madera-spi.c index 4c398b2..1128584 100644 --- a/drivers/mfd/madera-spi.c +++ b/drivers/mfd/madera-spi.c @@ -121,6 +121,16 @@ static const struct spi_device_id madera_spi_ids[] = { }; MODULE_DEVICE_TABLE(spi, madera_spi_ids); +const struct of_device_id madera_of_match[] = { + { .compatible = "cirrus,cs47l35", .data = (void *)CS47L35 }, + { .compatible = "cirrus,cs47l85", .data = (void *)CS47L85 }, + { .compatible = "cirrus,cs47l90", .data = (void *)CS47L90 }, + { .compatible = "cirrus,cs47l91", .data = (void *)CS47L91 }, + { .compatible = "cirrus,wm1840", .data = (void *)WM1840 }, + {} +}; +MODULE_DEVICE_TABLE(of, madera_of_match); + static struct spi_driver madera_spi_driver = { .driver = { .name = "madera", -- 2.7.4

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Re: [alsa-devel] ALC892 acquisition stutter
by rodomar705＠protonmail.com 29 Apr '19

29 Apr '19

Maybe, just maybe, I found a probable cause of what's happening here. Since it was working with ALSA directly only with audacity, I follow the instruction on tracing the HDA commands sent to the codec while acquiring audio with Audacity. One with ALSA directly (just with Audacity thought, arecord show the same problem from Pulse), when is working correctly, one without it, using pulse. The logs are very interesting. The working one just simply sent two command to the audio codec, and then the stream started. The other one spammed a lot of more data, and it appears that the problem (and the continuous popping of the audio) derives from the fact that the codec keep closing the stream after 100 to 300 ms, that force pulse to ask the audio controller to restart the stream and cause an actual noise coming from the microphone (since the stream is not instantly restarted). There is another little difference beetween the second command sent to the codec directly with ALSA (from audacity) and the command sent from Pulse: ALSA with Audacity: 1106.051129: hda_send_cmd: [0000:09:00.3:0] val=0x00820031 Pulse with Audacity: 1231.103757: hda_send_cmd: [0000:09:00.3:0] val=0x00820011 However with arecord -d 10 -fS16_LE -r44100 /tmp/test-mic.wav as a parameter I still get almost the same as Pulseaudo: arecord with Audacity: 2891.230874: hda_send_cmd: [0000:09:00.3:0] val=0x00824011 However, no start stop behaviour like on pulseaudio, however the audio clicking are still there. The log are attached to this email, hoping that will help fix the issue. Sent with [ProtonMail](https://protonmail.com) Secure Email. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ Il domenica 28 aprile 2019 10:52, <rodomar705(a)protonmail.com> ha scritto: > Already sent to alsa-user, however a developer asked to send this also on devel, so here it is: > > I have audio stutters with an ALC892 Realtek Chipset on a B450 GAMING ELITE board from Gigabyte during acquisition (at least with microphone input, both front and back. Line in not tested). No issues with Windows. > > After opening an issue and testing with a PulseAudio developer, he has determined that the issue is not within PulseAudio, but on ALSA. > > There are already two issues about that on the bug tracker on Linux, namely this two: > > ALC892: https://bugzilla.kernel.org/show_bug.cgi?id=203351 > ALC1220: https://bugzilla.kernel.org/show_bug.cgi?id=195303 > > To me both appears to be identical, for this reason even if I have a ALC892 I’ve posted on the second one, just because it had more posts. > > The particular thing is that acquiring with PulseAudio on Audacity show the problem, however using ALSA directly the issue is not present. Trying using arecord still present the issue from PulseAudio. > > Tried to play with the parameters /sys/devices/audio to no avail. Compared the pinconfigs from Windows, they are identical. > > Can someone try to help me fix the issue? > > Sent with [ProtonMail](https://protonmail.com) Secure Email.

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[alsa-devel] [PATCH RFC V2] ALSA: usb-audio: Scarlett Gen 2 mixer interface
by Geoffrey D. Bennett 29 Apr '19

29 Apr '19

Add mixer quirk for the Focusrite Scarlett 18i8 and 18i20 Gen 2 audio interfaces. Although the interfaces are USB compliant, additional input/output level controls and hardware routing/mixing functionality are available using proprietary USB requests. Signed-off-by: Geoffrey D. Bennett <g(a)b4.vu> --- Hi all, This patch adds the following controls for the Scarlett 18i8 and 18i20 Gen 2: - Master volume knob indicator (18i20 only) - Volume controls for the analogue HW outputs - HW/SW volume switches for the 10 analogue HW outputs (18i20 only) - Output mux (where the sound for the HW outputs comes from; defaults to PCM outputs) - Capture mux (where the sound for PCM recording comes from; defaults to HW inputs) - Matrix mux (where the sound going into the mixer comes from; 18 inputs default off) - Mixer matrix (18 inputs * 10 outputs = 180 controls) - Mute and dim indicators (18i20 only) - Line Level/Instrument Level and Pad controls (18i8 only) - Level meters Changes since v1: - Add support for the Scarlett 18i8 Gen 2 - Save configuration parameters to NVRAM - Implemented feedback from Takashi's email 24/Apr/2019 - Moved private field from struct snd_usb_audio to struct usb_mixer_interface - Added timer and buffer fields to struct usb_mixer_interface - Other small code fixes/cleanups/improvements Outstanding issues/questions: - Adding fields to struct usb_mixer_interface seemed a better place than struct snd_usb_audio as in version 1 of this patch (I think these new fields are used in the same sort of context as the "Sound Blaster remote control stuff" fields, and I am reusing rc_urb and rc_setup_packet). I wasn't sure of the naming; should they be named generically ("timer", "private") or specifically ("scarlett2_buffer")? Should the Sound Blaster RC fields that I'm reusing be renamed to have generic names? - There are software controllable pads on the 18i8 line-inputs. I called the controls "Line In %d Pad Capture Switch". They work correctly in alsamixer (shown in the capture view as e.g. "Line In 1 Pad") but the "on" state is displayed as "L R CAPTURE" which looks unusual. I could use an Enum with Off/On values, but I thought this is what "Switch" is for (as per control-names.rst). Should I leave this as-is, or is there a better name that will make this show up as a regular on/off switch? amixer contents shows: numid=15,iface=MIXER,name='Line In 1 Pad Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=off amixer scontents shows: Simple mixer control 'Line In 1 Pad',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [off] Thanks, Geoffrey. diff --git a/sound/usb/Makefile b/sound/usb/Makefile index d330f74c90e6..8cf7081e17cb 100644 --- a/sound/usb/Makefile +++ b/sound/usb/Makefile @@ -11,6 +11,7 @@ snd-usb-audio-objs := card.o \ mixer.o \ mixer_quirks.o \ mixer_scarlett.o \ + mixer_scarlett_gen2.o \ mixer_us16x08.o \ pcm.o \ power.o \ diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index e7d441d0e839..8cd1fc2f7580 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -3521,6 +3521,9 @@ void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) usb_kill_urb(mixer->urb); if (mixer->rc_urb) usb_kill_urb(mixer->rc_urb); + kfree(mixer->scarlett2_buffer); + del_timer_sync(&mixer->timer); + kfree(mixer->private); mixer->disconnected = true; } diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h index 3d12af8bf191..d009f6cb74b9 100644 --- a/sound/usb/mixer.h +++ b/sound/usb/mixer.h @@ -25,6 +25,11 @@ struct usb_mixer_interface { u8 rc_buffer[6]; bool disconnected; + + /* Scarlett Gen 2 */ + void *scarlett2_buffer; + struct timer_list timer; + void *private; }; #define MAX_CHANNELS 16 /* max logical channels */ diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index 85ae0ff2382a..faa5e149ef10 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -45,6 +45,7 @@ #include "mixer.h" #include "mixer_quirks.h" #include "mixer_scarlett.h" +#include "mixer_scarlett_gen2.h" #include "mixer_us16x08.h" #include "helper.h" @@ -2273,6 +2274,11 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer) err = snd_scarlett_controls_create(mixer); break; + case USB_ID(0x1235, 0x8204): /* Focusrite Scarlett 18i8 2nd Gen */ + case USB_ID(0x1235, 0x8201): /* Focusrite Scarlett 18i20 2nd Gen */ + err = snd_scarlett_gen2_controls_create(mixer); + break; + case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */ err = snd_soundblaster_e1_switch_create(mixer); break; diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c new file mode 100644 index 000000000000..c19a520c0d69 --- /dev/null +++ b/sound/usb/mixer_scarlett_gen2.c @@ -0,0 +1,2032 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Focusrite Scarlett 18i8/18i20 Gen 2 Driver for ALSA + * + * Copyright (c) 2018-2019 by Geoffrey D. Bennett <g at b4.vu> + * + * 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> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +/* Mixer Interface for the Focusrite Scarlett 18i8/18i20 Gen 2 audio + * interface. Based on the Gen 1 driver and rewritten. + */ + +/* 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. + * + * This ALSA mixer gives access to: + * - input, output, mixer-matrix muxes + * - 18x10 mixer-matrix gain stages + * - gain/volume controls + * - level meters + * - line/inst level and pad controls + * + * <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 + * +-------------+ switch per channel to select + * | Master Gain |<-- front panel volume knob or + * +------+------+ individual software gain + * | (18i20 only) + * |10chn + * /--------------\ | + * | Analogue |<------/ + * | Hardware out | + * \--------------/ + * </ditaa> + * + */ + +#include <linux/slab.h> +#include <linux/usb.h> + +#include <sound/control.h> +#include <sound/tlv.h> + +#include "usbaudio.h" +#include "mixer.h" +#include "helper.h" + +#include "mixer_scarlett_gen2.h" + +/* some gui mixers can't handle negative ctl values */ +#define SCARLETT_VOLUME_BIAS 127 + +/* mixer range from -80dB to +6dB in 0.5dB steps */ +#define SCARLETT_MIXER_MIN_DB -80 +#define SCARLETT_MIXER_BIAS (-SCARLETT_MIXER_MIN_DB * 2) +#define SCARLETT_MIXER_MAX_DB 6 +#define SCARLETT_MIXER_MAX_VALUE \ + ((SCARLETT_MIXER_MAX_DB - SCARLETT_MIXER_MIN_DB) * 2) + +/* 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[173] = { + 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 4 + +/* Maximum number of inputs to the mixer */ +#define SCARLETT2_INPUT_MIX_MAX 18 + +/* Maximum number of outputs from the mixer */ +#define SCARLETT2_OUTPUT_MIX_MAX 10 + +/* Maximum size of the data in the USB mux assignment message: + * 18 inputs, 20 outputs, 18 matrix inputs, 8 spare + */ +#define SCARLETT2_MUX_MAX 64 + +/* Number of meters: + * 18 inputs, 20 outputs, 18 matrix inputs + */ +#define SCARLETT2_NUM_METERS 56 + +/* 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, +}; + +/* Count of total I/O and number available at each sample rate */ +enum { + SCARLETT2_PORT_IN = 0, + SCARLETT2_PORT_OUT = 1, + SCARLETT2_PORT_OUT_44 = 2, + SCARLETT2_PORT_OUT_88 = 3, + SCARLETT2_PORT_OUT_176 = 4, + SCARLETT2_PORT_DIRECTIONS = 5, +}; + +/* Hardware buttons on the 18i20 */ +#define SCARLETT2_BUTTON_MAX 2 + +static const char *const scarlett2_button_names[SCARLETT2_BUTTON_MAX] = { + "Mute", "Dim" +}; + +/* Description of each hardware port type: + * - id: hardware ID for this port type + * - num: number of sources/destinations 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_ports { + u16 id; + int num[SCARLETT2_PORT_DIRECTIONS]; + const char * const src_descr; + int src_num_offset; + const char * const dst_descr; +}; + +struct scarlett2_device_info { + u8 line_out_hw_vol; /* line out hw volume is sw controlled */ + u8 button_count; /* number of buttons */ + u8 level_input_count; /* inputs with level selectable */ + u8 pad_input_count; /* inputs with pad selectable */ + const char * const line_out_descrs[SCARLETT2_ANALOGUE_MAX]; + struct scarlett2_ports ports[SCARLETT2_PORT_TYPE_COUNT]; +}; + +struct scarlett2_mixer_data { + struct mutex usb_mutex; /* prevent sending concurrent USB requests */ + struct mutex data_mutex; /* lock access to this data */ + const struct scarlett2_device_info *info; + int num_mux_srcs; + u16 scarlett2_seq; + u8 vol_updated; + u8 master_vol; + u8 vol[SCARLETT2_ANALOGUE_MAX]; + u8 vol_sw_hw_switch[SCARLETT2_ANALOGUE_MAX]; + u8 level_switch[SCARLETT2_LEVEL_SWITCH_MAX]; + u8 pad_switch[SCARLETT2_PAD_SWITCH_MAX]; + u8 buttons[SCARLETT2_BUTTON_MAX]; + struct snd_kcontrol *master_vol_ctl; + struct snd_kcontrol *vol_ctls[SCARLETT2_ANALOGUE_MAX]; + struct snd_kcontrol *button_ctls[SCARLETT2_ANALOGUE_MAX]; + u8 mux[SCARLETT2_MUX_MAX]; + u8 mix[SCARLETT2_INPUT_MIX_MAX * SCARLETT2_OUTPUT_MIX_MAX]; +}; + +struct scarlett2_usb_volume_status { + u8 buttons[SCARLETT2_BUTTON_MAX]; /* mute & dim buttons */ + u8 pad1; + s16 sw_vol[10]; /* software volume setting */ + s16 hw_vol[10]; /* actual volume of output inc. dim (-18dB) */ + u8 pad2[10]; + u8 sw_hw_switch[10]; /* sw (0) or hw (1) controlled */ + u8 pad3[6]; + s16 master_vol; /* front panel volume knob */ +} __packed; + +/*** Model-specific data ***/ + +static const struct scarlett2_device_info s18i8_gen2_info = { + /* The first two analogue inputs can be switched between line + * and instrument levels. + */ + .level_input_count = 2, + + /* The first four analogue inputs have an optional pad. */ + .pad_input_count = 4, + + .line_out_descrs = { + "Monitor L", + "Monitor R", + "Headphones 1 L", + "Headphones 1 R", + "Headphones 2 L", + "Headphones 2 R", + }, + + .ports = { + { + .id = 0x000, + .num = { 1, 0, 8, 8, 4 }, + .src_descr = "Off", + .src_num_offset = 0, + }, + { + .id = 0x080, + .num = { 8, 6, 6, 6, 6 }, + .src_descr = "Analogue %d", + .src_num_offset = 1, + .dst_descr = "Analogue Output %02d Playback" + }, + { + /* S/PDIF outputs aren't available at 192KHz + * but are included in the USB mux I/O + * assignment message anyway + */ + .id = 0x180, + .num = { 2, 2, 2, 2, 2 }, + .src_descr = "S/PDIF %d", + .src_num_offset = 1, + .dst_descr = "S/PDIF Output %d Playback" + }, + { + .id = 0x200, + .num = { 8, 0, 0, 0, 0 }, + .src_descr = "ADAT %d", + .src_num_offset = 1, + }, + { + .id = 0x300, + .num = { 10, 18, 18, 18, 18 }, + .src_descr = "Mix %c", + .src_num_offset = 65, + .dst_descr = "Mixer Input %02d Capture" + }, + { + .id = 0x600, + .num = { 20, 18, 18, 14, 10 }, + .src_descr = "PCM %d", + .src_num_offset = 1, + .dst_descr = "PCM %02d Capture" + }, + }, +}; + +static const struct scarlett2_device_info s18i20_gen2_info = { + /* The analogue line outputs on the 18i20 can be switched + * between software and hardware volume control + */ + .line_out_hw_vol = 1, + + /* Mute and dim buttons */ + .button_count = 2, + + .line_out_descrs = { + "Monitor L", + "Monitor R", + NULL, + NULL, + NULL, + NULL, + "Headphones 1 L", + "Headphones 1 R", + "Headphones 2 L", + "Headphones 2 R", + }, + + .ports = { + { + .id = 0x000, + .num = { 1, 0, 8, 8, 6 }, + .src_descr = "Off", + .src_num_offset = 0, + }, + { + .id = 0x080, + .num = { 8, 10, 10, 10, 10 }, + .src_descr = "Analogue %d", + .src_num_offset = 1, + .dst_descr = "Analogue Output %02d Playback" + }, + { + /* S/PDIF outputs aren't available at 192KHz + * but are included in the USB mux I/O + * assignment message anyway + */ + .id = 0x180, + .num = { 2, 2, 2, 2, 2 }, + .src_descr = "S/PDIF %d", + .src_num_offset = 1, + .dst_descr = "S/PDIF Output %d Playback" + }, + { + .id = 0x200, + .num = { 8, 8, 8, 4, 0 }, + .src_descr = "ADAT %d", + .src_num_offset = 1, + .dst_descr = "ADAT Output %d Playback" + }, + { + .id = 0x300, + .num = { 10, 18, 18, 18, 18 }, + .src_descr = "Mix %c", + .src_num_offset = 65, + .dst_descr = "Mixer Input %02d Capture" + }, + { + .id = 0x600, + .num = { 20, 18, 18, 14, 10 }, + .src_descr = "PCM %d", + .src_num_offset = 1, + .dst_descr = "PCM %02d Capture" + }, + }, +}; + +/* get the starting port index number for a given port type/direction */ +static int scarlett2_get_port_start_num(const struct scarlett2_ports *ports, + int direction, int port_type) +{ + int i, num = 0; + + for (i = 0; i < port_type; i++) + num += ports[i].num[direction]; + + return num; +} + +/*** USB Interactions ***/ + +/* Vendor-Specific Interface, Endpoint, MaxPacketSize, Interval */ +#define SCARLETT2_USB_VENDOR_SPECIFIC_INTERFACE 5 +#define SCARLETT2_USB_INTERRUPT_ENDPOINT 4 +#define SCARLETT2_USB_INTERRUPT_MAX_DATA 64 +#define SCARLETT2_USB_INTERRUPT_INTERVAL 3 + +/* Interrupt flags for volume and mute/dim button changes */ +#define SCARLETT2_USB_INTERRUPT_VOL_CHANGE 0x400000 +#define SCARLETT2_USB_INTERRUPT_BUTTON_CHANGE 0x200000 + +/* Commands for sending/receiving requests/responses */ +#define SCARLETT2_USB_VENDOR_SPECIFIC_CMD_REQ 2 +#define SCARLETT2_USB_VENDOR_SPECIFIC_CMD_RESP 3 + +#define SCARLETT2_USB_INIT_SEQ 0x00000000 +#define SCARLETT2_USB_GET_METER_LEVELS 0x00001001 +#define SCARLETT2_USB_SET_MIX 0x00002002 +#define SCARLETT2_USB_SET_MUX 0x00003002 +#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 + +/* Configuration parameters that can be read and written */ +enum { + SCARLETT2_CONFIG_LINE_OUT_VOLUME = 0, + SCARLETT2_CONFIG_SW_HW_SWITCH = 1, + SCARLETT2_CONFIG_LEVEL_SWITCH = 2, + SCARLETT2_CONFIG_PAD_SWITCH = 3, + SCARLETT2_CONFIG_COUNT = 4 +}; + +/* Location, size, and activation command number for the configuration + * parameters + */ +struct scarlett2_config { + u8 offset; + u8 size; + u8 activate; +}; + +static const struct scarlett2_config + scarlett2_config_items[SCARLETT2_CONFIG_COUNT] = { + /* Line Out Volume */ + { + .offset = 0x34, + .size = 2, + .activate = 1 + }, + + /* SW/HW Volume Switch */ + { + .offset = 0x66, + .size = 1, + .activate = 3 + }, + + /* Level Switch */ + { + .offset = 0x7c, + .size = 1, + .activate = 7 + }, + + /* Pad Switch */ + { + .offset = 0x84, + .size = 1, + .activate = 8 + } +}; + +/* proprietary request/response format */ +struct scarlett2_usb_packet { + u32 cmd; + u16 size; + u16 seq; + u32 error; + u32 pad; + u8 data[]; +}; + +#define SCARLETT2_USB_PACKET_LEN (sizeof(struct scarlett2_usb_packet)) + +static void scarlett2_fill_request_header(struct scarlett2_mixer_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; +} + +/* 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_mixer_data *private = mixer->private; + + u16 req_buf_size = sizeof(struct scarlett2_usb_packet) + req_size; + u16 resp_buf_size = sizeof(struct scarlett2_usb_packet) + resp_size; + + struct scarlett2_usb_packet *req = 0, *resp = 0; + + int err = 0; + + mutex_lock(&private->usb_mutex); + + /* build request message and send it */ + + req = kmalloc(req_buf_size, GFP_KERNEL); + if (!req) { + err = -ENOMEM; + goto unlock; + } + + scarlett2_fill_request_header(private, req, cmd, req_size); + + if (req_size) + memcpy(req->data, req_data, req_size); + + err = snd_usb_ctl_msg(mixer->chip->dev, + usb_sndctrlpipe(mixer->chip->dev, 0), + SCARLETT2_USB_VENDOR_SPECIFIC_CMD_REQ, + USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, + 0, + SCARLETT2_USB_VENDOR_SPECIFIC_INTERFACE, + req, + req_buf_size); + + if (err != req_buf_size) { + usb_audio_err( + mixer->chip, + "Scarlett Gen 2 USB request result cmd %x was %d\n", + cmd, err); + err = -EINVAL; + goto unlock; + } + + /* send a second message to get the response */ + + resp = kmalloc(resp_buf_size, GFP_KERNEL); + if (!resp) { + err = -ENOMEM; + goto unlock; + } + + err = snd_usb_ctl_msg(mixer->chip->dev, + usb_sndctrlpipe(mixer->chip->dev, 0), + SCARLETT2_USB_VENDOR_SPECIFIC_CMD_RESP, + USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, + 0, + SCARLETT2_USB_VENDOR_SPECIFIC_INTERFACE, + resp, + resp_buf_size); + + /* validate the response */ + + if (err != resp_buf_size) { + usb_audio_err( + mixer->chip, + "Scarlett Gen 2 USB response result cmd %x was %d\n", + cmd, err); + err = -EINVAL; + goto unlock; + } + + if (resp->cmd != req->cmd || + resp->seq != req->seq || + resp_size != le16_to_cpu(resp->size) || + resp->error || + resp->pad) { + usb_audio_err( + mixer->chip, + "Scarlett Gen 2 USB invalid response; " + "cmd tx/rx %d/%d seq %d/%d size %d/%d " + "error %d pad %d\n", + le16_to_cpu(req->cmd), le16_to_cpu(resp->cmd), + le16_to_cpu(req->seq), le16_to_cpu(resp->seq), + resp_size, le16_to_cpu(resp->size), + le16_to_cpu(resp->error), + le16_to_cpu(resp->pad)); + err = -EINVAL; + goto unlock; + } + + if (resp_size > 0) + memcpy(resp_data, resp->data, resp_size); + +unlock: + kfree(req); + kfree(resp); + mutex_unlock(&private->usb_mutex); + return err; +} + +/* Clean up after SCARLETT2_USB_CONFIG_SAVE response is received */ +static void scarlett2_config_save_response_complete(struct urb *urb) +{ + struct usb_mixer_interface *mixer = urb->context; + struct scarlett2_usb_packet *resp = mixer->scarlett2_buffer; + + if (urb->status < 0) { + usb_audio_err(mixer->chip, "%s: status %d\n", + __func__, urb->status); + } else if (resp->error) { + usb_audio_err(mixer->chip, "%s: error %d\n", + __func__, le16_to_cpu(resp->error)); + } + + usb_free_urb(mixer->rc_urb); + mixer->rc_urb = 0; + kfree(mixer->rc_setup_packet); + mixer->rc_setup_packet = 0; +} + +/* Fill mixer->rc_setup_packet and mixer->urb then submit it */ +static void scarlett2_send_mixer_control_urb( + struct usb_mixer_interface *mixer, u8 dirn, u8 req, + int len, usb_complete_t complete_fn) +{ + struct usb_ctrlrequest *ctrl = mixer->rc_setup_packet; + + ctrl->bRequestType = USB_RECIP_INTERFACE | USB_TYPE_CLASS | dirn; + ctrl->bRequest = req; + ctrl->wValue = cpu_to_le16(0); + ctrl->wIndex = cpu_to_le16(SCARLETT2_USB_VENDOR_SPECIFIC_INTERFACE); + ctrl->wLength = cpu_to_le16(len); + + usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev, + usb_sndctrlpipe(mixer->chip->dev, 0), + (u8 *)ctrl, mixer->scarlett2_buffer, len, + complete_fn, mixer); + + usb_submit_urb(mixer->rc_urb, GFP_ATOMIC); +} + +/* SCARLETT2_USB_CONFIG_SAVE is complete; send a request for the response */ +static void scarlett2_config_save_complete(struct urb *urb) +{ + struct usb_mixer_interface *mixer = urb->context; + int len = SCARLETT2_USB_PACKET_LEN; + + if (urb->status < 0) { + usb_audio_err(mixer->chip, + "%s: status %d\n", __func__, urb->status); + + usb_free_urb(mixer->rc_urb); + mixer->rc_urb = 0; + kfree(mixer->rc_setup_packet); + mixer->rc_setup_packet = 0; + + return; + } + + scarlett2_send_mixer_control_urb( + mixer, USB_DIR_IN, SCARLETT2_USB_VENDOR_SPECIFIC_CMD_RESP, + len, scarlett2_config_save_response_complete); +} + +/* Send SCARLETT2_USB_DATA_CMD SCARLETT2_USB_CONFIG_SAVE */ +static void scarlett2_config_save(struct timer_list *t) +{ + struct usb_mixer_interface *mixer = from_timer(mixer, t, timer); + struct scarlett2_usb_packet *req = mixer->scarlett2_buffer; + struct scarlett2_mixer_data *private = mixer->private; + int len = SCARLETT2_USB_PACKET_LEN + sizeof(u32); + + if (mixer->rc_urb) { + usb_audio_err(mixer->chip, + "%s: mixer rc_urb already in use!\n", __func__); + return; + } + mixer->rc_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!mixer->rc_urb) { + usb_audio_err(mixer->chip, + "%s: usb_alloc_urb() failed!\n", __func__); + return; + } + mixer->rc_setup_packet = + kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL); + if (!mixer->rc_setup_packet) { + usb_free_urb(mixer->rc_urb); + mixer->rc_urb = NULL; + usb_audio_err(mixer->chip, + "%s: kmalloc() failed!\n", __func__); + return; + } + + scarlett2_fill_request_header(private, mixer->scarlett2_buffer, + SCARLETT2_USB_DATA_CMD, sizeof(u32)); + *(u32 *)(req->data) = cpu_to_le32(SCARLETT2_USB_CONFIG_SAVE); + + scarlett2_send_mixer_control_urb( + mixer, USB_DIR_OUT, SCARLETT2_USB_VENDOR_SPECIFIC_CMD_REQ, + len, scarlett2_config_save_complete); +} + +/* Send a USB message to set a configuration parameter (volume level, + * sw/hw volume switch, line/inst level switch, or pad switch) + */ +static int scarlett2_usb_set_config( + struct usb_mixer_interface *mixer, + int config_item_num, int index, int value) +{ + const struct scarlett2_config config_item = + scarlett2_config_items[config_item_num]; + struct { + u32 offset; + u32 bytes; + s32 value; + } __packed req; + u32 req2; + int err; + + /* Send the configuration parameter data */ + req.offset = cpu_to_le32(config_item.offset + index * config_item.size); + req.bytes = cpu_to_le32(config_item.size); + req.value = cpu_to_le32(value); + err = scarlett2_usb(mixer, SCARLETT2_USB_SET_DATA, + &req, sizeof(u32) * 2 + config_item.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 */ + mod_timer(&mixer->timer, jiffies + msecs_to_jiffies(2000)); + + return 0; +} + +/* 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 { + u32 offset; + u32 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) +{ + const struct scarlett2_config config_item = + scarlett2_config_items[config_item_num]; + int size = config_item.size * count; + + return scarlett2_usb_get(mixer, config_item.offset, buf, size); +} + +/* 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 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_mixer_data *private = mixer->private; + const struct scarlett2_device_info *info = private->info; + + struct { + u16 mix_num; + u16 data[SCARLETT2_INPUT_MIX_MAX]; + } __packed req; + + int i, j; + int num_mixer_in = + info->ports[SCARLETT2_PORT_TYPE_MIX].num[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->ports) to a hardware ID */ +static u32 scarlett2_mux_src_num_to_id(const struct scarlett2_ports *ports, + int num) +{ + int port_type; + + for (port_type = 0; + port_type < SCARLETT2_PORT_TYPE_COUNT; + port_type++) { + if (num < ports[port_type].num[SCARLETT2_PORT_IN]) + return ports[port_type].id | num; + num -= ports[port_type].num[SCARLETT2_PORT_IN]; + } + + /* Oops */ + return 0; +} + +/* Send USB messages to set mux inputs */ +static int scarlett2_usb_set_mux(struct usb_mixer_interface *mixer) +{ + struct scarlett2_mixer_data *private = mixer->private; + const struct scarlett2_device_info *info = private->info; + const struct scarlett2_ports *ports = info->ports; + int rate, port_dir_rate; + + static const int assignment_order[SCARLETT2_PORT_TYPE_COUNT] = { + SCARLETT2_PORT_TYPE_PCM, + SCARLETT2_PORT_TYPE_ANALOGUE, + SCARLETT2_PORT_TYPE_SPDIF, + SCARLETT2_PORT_TYPE_ADAT, + SCARLETT2_PORT_TYPE_MIX, + SCARLETT2_PORT_TYPE_NONE, + }; + + struct { + u16 pad; + u16 num; + u32 data[SCARLETT2_MUX_MAX]; + } __packed req; + + req.pad = 0; + + /* mux settings for each rate */ + for (rate = 0, port_dir_rate = SCARLETT2_PORT_OUT_44; + port_dir_rate <= SCARLETT2_PORT_OUT_176; + rate++, port_dir_rate++) { + int order_num, i, err; + + req.num = cpu_to_le16(rate); + + for (order_num = 0, i = 0; + order_num < SCARLETT2_PORT_TYPE_COUNT; + order_num++) { + int port_type = assignment_order[order_num]; + int j = scarlett2_get_port_start_num(ports, + SCARLETT2_PORT_OUT, + port_type); + int port_id = ports[port_type].id; + int channel; + + for (channel = 0; + channel < ports[port_type].num[port_dir_rate]; + channel++, i++, j++) + /* lower 12 bits for the destination and + * next 12 bits for the source + */ + req.data[i] = !port_id + ? 0 + : cpu_to_le32( + port_id | + channel | + scarlett2_mux_src_num_to_id( + ports, private->mux[j] + ) << 12 + ); + + /* skip private->mux[j] entries not output */ + j += ports[port_type].num[SCARLETT2_PORT_OUT] - + ports[port_type].num[port_dir_rate]; + } + + 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 *levels) +{ + struct { + u16 pad; + u16 num_meters; + u32 magic; + } __packed req; + u32 resp[SCARLETT2_NUM_METERS]; + int i, err; + + req.pad = 0; + req.num_meters = cpu_to_le16(SCARLETT2_NUM_METERS); + req.magic = cpu_to_le32(SCARLETT2_USB_METER_LEVELS_GET_MAGIC); + err = scarlett2_usb(mixer, SCARLETT2_USB_GET_METER_LEVELS, + &req, sizeof(req), resp, sizeof(resp)); + if (err < 0) + return err; + + /* copy, convert to u16 */ + for (i = 0; i < SCARLETT2_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; + + elem->head.mixer = mixer; + elem->control = index; + elem->head.id = index; + elem->channels = channels; + + kctl = snd_ctl_new1(ncontrol, elem); + if (!kctl) { + kfree(elem); + return -ENOMEM; + } + kctl->private_free = snd_usb_mixer_elem_free; + + strlcpy(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; +} + +/*** 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_mixer_data *private = mixer->private; + const struct scarlett2_ports *ports = private->info->ports; + struct scarlett2_usb_volume_status volume_status; + int num_line_out = + ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT]; + int err, i; + + 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 + SCARLETT_VOLUME_BIAS, + 0, SCARLETT_VOLUME_BIAS); + + for (i = 0; i < num_line_out; i++) { + if (private->vol_sw_hw_switch[i]) + private->vol[i] = private->master_vol; + } + + for (i = 0; i < private->info->button_count; i++) + private->buttons[i] = !!volume_status.buttons[i]; + + 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 = SCARLETT_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_mixer_data *private = mixer->private; + + if (private->vol_updated) { + mutex_lock(&private->data_mutex); + scarlett2_update_volumes(mixer); + mutex_unlock(&private->data_mutex); + } + + ucontrol->value.integer.value[0] = private->master_vol; + return 0; +} + +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_mixer_data *private = mixer->private; + int index = elem->control; + + if (private->vol_updated) { + mutex_lock(&private->data_mutex); + scarlett2_update_volumes(mixer); + mutex_unlock(&private->data_mutex); + } + + ucontrol->value.integer.value[0] = private->vol[index]; + return 0; +} + +static int scarlett2_volume_ctl_put(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + struct usb_mixer_interface *mixer = elem->head.mixer; + struct scarlett2_mixer_data *private = mixer->private; + int index = elem->control; + int oval, val, err = 0; + + mutex_lock(&private->data_mutex); + del_timer_sync(&mixer->timer); + + 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 - SCARLETT_VOLUME_BIAS); + if (err == 0) + err = 1; + +unlock: + mutex_unlock(&private->data_mutex); + return err; +} + +static const DECLARE_TLV_DB_MINMAX( + db_scale_scarlett_gain, -SCARLETT_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_scarlett_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_scarlett_gain } +}; + +/*** HW/SW Volume Switch Controls ***/ + +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_mixer_data *private = elem->head.mixer->private; + + ucontrol->value.enumerated.item[0] = + private->vol_sw_hw_switch[elem->control]; + return 0; +} + +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_mixer_data *private = mixer->private; + + int index = elem->control; + int oval, val, err = 0; + + mutex_lock(&private->data_mutex); + del_timer_sync(&mixer->timer); + + oval = private->vol_sw_hw_switch[index]; + val = !!ucontrol->value.integer.value[0]; + + if (oval == val) + goto unlock; + + private->vol_sw_hw_switch[index] = val; + + /* Change access mode to RO (hardware controlled volume) + * or RW (software controlled volume) + */ + if (val) + private->vol_ctls[index]->vd[0].access &= + ~SNDRV_CTL_ELEM_ACCESS_WRITE; + else + private->vol_ctls[index]->vd[0].access |= + SNDRV_CTL_ELEM_ACCESS_WRITE; + + /* Reset volume to master volume */ + private->vol[index] = private->master_vol; + + /* Set SW volume to current HW volume */ + err = scarlett2_usb_set_config( + mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME, + index, private->master_vol - SCARLETT_VOLUME_BIAS); + if (err < 0) + goto unlock; + + /* Notify of RO/RW change */ + snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_INFO, + &private->vol_ctls[index]->id); + + /* Send SW/HW switch change to the device */ + err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_SW_HW_SWITCH, + index, val); + +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_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 scarlett2_mixer_data *private = elem->head.mixer->private; + + ucontrol->value.enumerated.item[0] = + private->level_switch[elem->control]; + return 0; +} + +static int scarlett2_level_enum_ctl_put(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + struct usb_mixer_interface *mixer = elem->head.mixer; + struct scarlett2_mixer_data *private = mixer->private; + + int index = elem->control; + int oval, val, err = 0; + + mutex_lock(&private->data_mutex); + del_timer_sync(&mixer->timer); + + oval = private->level_switch[index]; + val = !!ucontrol->value.integer.value[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); + +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 scarlett2_mixer_data *private = elem->head.mixer->private; + + ucontrol->value.enumerated.item[0] = + private->pad_switch[elem->control]; + return 0; +} + +static int scarlett2_pad_ctl_put(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + struct usb_mixer_interface *mixer = elem->head.mixer; + struct scarlett2_mixer_data *private = mixer->private; + + int index = elem->control; + int oval, val, err = 0; + + mutex_lock(&private->data_mutex); + del_timer_sync(&mixer->timer); + + 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); + +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, +}; + +/*** Mute/Dim Controls ***/ + +static int scarlett2_button_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_mixer_data *private = mixer->private; + + if (private->vol_updated) { + mutex_lock(&private->data_mutex); + scarlett2_update_volumes(mixer); + mutex_unlock(&private->data_mutex); + } + + ucontrol->value.enumerated.item[0] = private->buttons[elem->control]; + return 0; +} + +static const struct snd_kcontrol_new scarlett2_button_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .name = "", + .info = snd_ctl_boolean_mono_info, + .get = scarlett2_button_ctl_get +}; + +/*** Create the analogue output controls ***/ + +static int scarlett2_add_line_out_ctls(struct usb_mixer_interface *mixer) +{ + struct scarlett2_mixer_data *private = mixer->private; + const struct scarlett2_device_info *info = private->info; + const struct scarlett2_ports *ports = info->ports; + int num_line_out = + ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[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++) { + + /* 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; + + /* Make the fader read-only if the SW/HW switch is set to HW */ + if (private->vol_sw_hw_switch[i]) + private->vol_ctls[i]->vd[0].access &= + ~SNDRV_CTL_ELEM_ACCESS_WRITE; + + /* 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, NULL); + if (err < 0) + return err; + } + } + + /* Add HW button controls */ + for (i = 0; i < private->info->button_count; i++) { + err = scarlett2_add_new_ctl(mixer, &scarlett2_button_ctl, + i, 1, scarlett2_button_names[i], + &private->button_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_mixer_data *private = mixer->private; + const struct scarlett2_device_info *info = private->info; + int err, i; + char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; + + /* Add input level (line/inst) controls */ + for (i = 0; i < info->level_input_count; i++) { + snprintf(s, sizeof(s), "Line In %d Level Capture Enum", i + 1); + err = scarlett2_add_new_ctl(mixer, &scarlett2_level_enum_ctl, + i, 1, s, NULL); + if (err < 0) + return err; + } + + /* Add input pad controls */ + for (i = 0; i < info->pad_input_count; i++) { + snprintf(s, sizeof(s), "Line In %d Pad Capture Switch", i + 1); + err = scarlett2_add_new_ctl(mixer, &scarlett2_pad_ctl, + i, 1, s, 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 = SCARLETT_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_mixer_data *private = elem->head.mixer->private; + + 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_mixer_data *private = mixer->private; + const struct scarlett2_device_info *info = private->info; + const struct scarlett2_ports *ports = info->ports; + int oval, val, num_mixer_in, mix_num, err = 0; + + mutex_lock(&private->data_mutex); + + oval = private->mix[elem->control]; + val = ucontrol->value.integer.value[0]; + num_mixer_in = ports[SCARLETT2_PORT_TYPE_MIX].num[SCARLETT2_PORT_OUT]; + mix_num = elem->control / num_mixer_in; + + if (oval == val) + goto unlock; + + private->mix[elem->control] = 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_scarlett_mixer, + SCARLETT_MIXER_MIN_DB * 100, + SCARLETT_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 = SCARLETT_MIXER_MAX_DB, /* max value */ + .tlv = { .p = db_scale_scarlett_mixer } +}; + +static int scarlett2_add_mixer_ctls(struct usb_mixer_interface *mixer) +{ + struct scarlett2_mixer_data *private = mixer->private; + const struct scarlett2_ports *ports = private->info->ports; + int err, i, j; + int index; + char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; + + int num_inputs = ports[SCARLETT2_PORT_TYPE_MIX].num[SCARLETT2_PORT_OUT]; + int num_outputs = ports[SCARLETT2_PORT_TYPE_MIX].num[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_mixer_data *private = elem->head.mixer->private; + const struct scarlett2_ports *ports = private->info->ports; + 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 < ports[port_type].num[SCARLETT2_PORT_IN]) { + sprintf(uinfo->value.enumerated.name, + ports[port_type].src_descr, + item + ports[port_type].src_num_offset); + return 0; + } + item -= ports[port_type].num[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 scarlett2_mixer_data *private = elem->head.mixer->private; + + ucontrol->value.enumerated.item[0] = private->mux[elem->control]; + return 0; +} + +static int scarlett2_mux_src_enum_ctl_put(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + struct usb_mixer_interface *mixer = elem->head.mixer; + struct scarlett2_mixer_data *private = mixer->private; + int index = elem->control; + int oval, val, err = 0; + + mutex_lock(&private->data_mutex); + + oval = private->mux[index]; + val = clamp(ucontrol->value.integer.value[0], + 0L, private->num_mux_srcs - 1L); + + 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_mixer_data *private = mixer->private; + const struct scarlett2_ports *ports = private->info->ports; + int port_type, channel, i; + + for (i = 0, port_type = 0; + port_type < SCARLETT2_PORT_TYPE_COUNT; + port_type++) { + for (channel = 0; + channel < ports[port_type].num[SCARLETT2_PORT_OUT]; + channel++, i++) { + int err; + char s[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; + const char *const descr = 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, NULL); + 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_NUM_METERS]; + int i, err; + + err = scarlett2_usb_get_meter_levels(elem->head.mixer, 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) +{ + return scarlett2_add_new_ctl(mixer, &scarlett2_meter_ctl, + 0, SCARLETT2_NUM_METERS, + "Level Meter", NULL); +} + +/*** Initialisation ***/ + +static int scarlett2_count_mux_srcs(const struct scarlett2_ports *ports) +{ + int port_type, count = 0; + + for (port_type = 0; + port_type < SCARLETT2_PORT_TYPE_COUNT; + port_type++) + count += ports[port_type].num[SCARLETT2_PORT_IN]; + + return count; +} + +/* Default routing connects PCM outputs and inputs to Analogue, + * S/PDIF, then ADAT + */ +static void scarlett2_init_routing(u8 *mux, + const struct scarlett2_ports *ports) +{ + int i, input_num, input_count, port_type; + int output_num, output_count, port_type_connect_num; + + static const int connect_order[] = { + SCARLETT2_PORT_TYPE_ANALOGUE, + SCARLETT2_PORT_TYPE_SPDIF, + SCARLETT2_PORT_TYPE_ADAT, + -1 + }; + + /* Assign PCM inputs (routing outputs) */ + output_num = scarlett2_get_port_start_num(ports, + SCARLETT2_PORT_OUT, + SCARLETT2_PORT_TYPE_PCM); + output_count = ports[SCARLETT2_PORT_TYPE_PCM].num[SCARLETT2_PORT_OUT]; + + for (port_type = connect_order[port_type_connect_num = 0]; + port_type >= 0; + port_type = connect_order[++port_type_connect_num]) { + input_num = scarlett2_get_port_start_num( + ports, SCARLETT2_PORT_IN, port_type); + input_count = ports[port_type].num[SCARLETT2_PORT_IN]; + for (i = 0; + i < input_count && output_count; + i++, output_count--) + mux[output_num++] = input_num++; + } + + /* Assign PCM outputs (routing inputs) */ + input_num = scarlett2_get_port_start_num(ports, + SCARLETT2_PORT_IN, + SCARLETT2_PORT_TYPE_PCM); + input_count = ports[SCARLETT2_PORT_TYPE_PCM].num[SCARLETT2_PORT_IN]; + + for (port_type = connect_order[port_type_connect_num = 0]; + port_type >= 0; + port_type = connect_order[++port_type_connect_num]) { + output_num = scarlett2_get_port_start_num( + ports, SCARLETT2_PORT_OUT, port_type); + output_count = ports[port_type].num[SCARLETT2_PORT_OUT]; + for (i = 0; + i < output_count && input_count; + i++, input_count--) + mux[output_num++] = input_num++; + } +} + +/* Initialise private data, routing, sequence number */ +static int scarlett2_init_private(struct usb_mixer_interface *mixer, + const struct scarlett2_device_info *info) +{ + struct scarlett2_mixer_data *private = + kzalloc(sizeof(struct scarlett2_mixer_data), GFP_KERNEL); + + if (!private) + return -ENOMEM; + + mutex_init(&private->usb_mutex); + mutex_init(&private->data_mutex); + timer_setup(&mixer->timer, scarlett2_config_save, 0); + private->info = info; + private->num_mux_srcs = scarlett2_count_mux_srcs(info->ports); + private->scarlett2_seq = 0; + mixer->private = private; + + /* enough for the SCARLETT2_USB_DATA_CMD request sent by the timer + * callback + */ + mixer->scarlett2_buffer = kmalloc( + SCARLETT2_USB_PACKET_LEN + sizeof(u32), GFP_KERNEL); + + /* Setup default routing */ + scarlett2_init_routing(private->mux, info->ports); + + /* Initialise the sequence number used for the proprietary commands */ + return scarlett2_usb(mixer, SCARLETT2_USB_INIT_SEQ, + NULL, 0, NULL, 0); +} + +/* Read line-in config and line-out volume settings on start */ +static int scarlett2_read_configs(struct usb_mixer_interface *mixer) +{ + struct scarlett2_mixer_data *private = mixer->private; + const struct scarlett2_device_info *info = private->info; + const struct scarlett2_ports *ports = info->ports; + int num_line_out = + ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT]; + u8 level_switches[SCARLETT2_LEVEL_SWITCH_MAX]; + u8 pad_switches[SCARLETT2_PAD_SWITCH_MAX]; + struct scarlett2_usb_volume_status volume_status; + int err, i; + + if (info->level_input_count) { + err = scarlett2_usb_get_config( + mixer, + SCARLETT2_CONFIG_LEVEL_SWITCH, + info->level_input_count, + level_switches); + if (err < 0) + return err; + for (i = 0; i < info->level_input_count; i++) + private->level_switch[i] = level_switches[i]; + } + + if (info->pad_input_count) { + err = scarlett2_usb_get_config( + mixer, + SCARLETT2_CONFIG_PAD_SWITCH, + info->pad_input_count, + pad_switches); + if (err < 0) + return err; + for (i = 0; i < info->pad_input_count; i++) + private->pad_switch[i] = pad_switches[i]; + } + + err = scarlett2_usb_get_volume_status(mixer, &volume_status); + if (err < 0) + return err; + + private->master_vol = clamp( + volume_status.master_vol + SCARLETT_VOLUME_BIAS, + 0, SCARLETT_VOLUME_BIAS); + + for (i = 0; i < num_line_out; i++) { + int volume; + + 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 + SCARLETT_VOLUME_BIAS, + 0, SCARLETT_VOLUME_BIAS); + private->vol[i] = volume; + } + + for (i = 0; i < info->button_count; i++) + private->buttons[i] = !!volume_status.buttons[i]; + + return 0; +} + +/* Notify on volume change */ +static void scarlett2_mixer_interrupt_vol_change( + struct usb_mixer_interface *mixer) +{ + struct scarlett2_mixer_data *private = mixer->private; + const struct scarlett2_ports *ports = private->info->ports; + int num_line_out = + ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT]; + int i; + + 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[i]) + continue; + snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, + &private->vol_ctls[i]->id); + } +} + +/* Notify on button change */ +static void scarlett2_mixer_interrupt_button_change( + struct usb_mixer_interface *mixer) +{ + struct scarlett2_mixer_data *private = mixer->private; + int i; + + private->vol_updated = 1; + + for (i = 0; i < private->info->button_count; i++) + snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, + &private->button_ctls[i]->id); +} + +/* Interrupt callback */ +static void scarlett2_mixer_interrupt(struct urb *urb) +{ + struct usb_mixer_interface *mixer = urb->context; + int len = urb->actual_length; + int ustatus = urb->status; + u32 data; + + if (ustatus != 0) + goto requeue; + + if (len == 8) { + data = le32_to_cpu(*(u32 *)urb->transfer_buffer); + if (data & SCARLETT2_USB_INTERRUPT_VOL_CHANGE) + scarlett2_mixer_interrupt_vol_change(mixer); + if (data & SCARLETT2_USB_INTERRUPT_BUTTON_CHANGE) + scarlett2_mixer_interrupt_button_change(mixer); + } else { + usb_audio_err(mixer->chip, + "scarlett mixer interrupt length %d\n", len); + } + +requeue: + if (ustatus != -ENOENT && + ustatus != -ECONNRESET && + ustatus != -ESHUTDOWN) { + urb->dev = mixer->chip->dev; + usb_submit_urb(urb, GFP_ATOMIC); + } +} + +static int scarlett2_mixer_status_create(struct usb_mixer_interface *mixer) +{ + void *transfer_buffer; + + if (mixer->urb) { + usb_audio_err(mixer->chip, + "%s: mixer urb already in use!\n", __func__); + return 0; + } + + mixer->urb = usb_alloc_urb(0, GFP_KERNEL); + if (!mixer->urb) + return -ENOMEM; + + transfer_buffer = kmalloc(SCARLETT2_USB_INTERRUPT_MAX_DATA, GFP_KERNEL); + if (!transfer_buffer) + return -ENOMEM; + + usb_fill_int_urb( + mixer->urb, + mixer->chip->dev, + usb_rcvintpipe(mixer->chip->dev, + SCARLETT2_USB_INTERRUPT_ENDPOINT), + transfer_buffer, + SCARLETT2_USB_INTERRUPT_MAX_DATA, + scarlett2_mixer_interrupt, + mixer, + SCARLETT2_USB_INTERRUPT_INTERVAL); + + return usb_submit_urb(mixer->urb, GFP_KERNEL); +} + +/* Entry point */ +int snd_scarlett_gen2_controls_create(struct usb_mixer_interface *mixer) +{ + const struct scarlett2_device_info *info; + int err; + + /* only use UAC_VERSION_2 */ + if (!mixer->protocol) + return 0; + + switch (mixer->chip->usb_id) { + case USB_ID(0x1235, 0x8204): + info = &s18i8_gen2_info; + break; + case USB_ID(0x1235, 0x8201): + info = &s18i20_gen2_info; + break; + default: /* device not (yet) supported */ + return -EINVAL; + } + + /* Initialise private data, routing, sequence number */ + err = scarlett2_init_private(mixer, info); + 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 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; + + /* Set up the interrupt polling if there are hardware buttons */ + if (info->button_count) { + err = scarlett2_mixer_status_create(mixer); + if (err < 0) + return err; + } + + return 0; +} diff --git a/sound/usb/mixer_scarlett_gen2.h b/sound/usb/mixer_scarlett_gen2.h new file mode 100644 index 000000000000..52e1dad77afd --- /dev/null +++ b/sound/usb/mixer_scarlett_gen2.h @@ -0,0 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __USB_MIXER_SCARLETT_GEN2_H +#define __USB_MIXER_SCARLETT_GEN2_H + +int snd_scarlett_gen2_controls_create(struct usb_mixer_interface *mixer); + +#endif /* __USB_MIXER_SCARLETT_GEN2_H */

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[alsa-devel] [PATCH] quirks for Roland MX-1
by Julian Wiesener 29 Apr '19

29 Apr '19

Hello, the attached Patch workarrounds the fact that the device appears to be working ASYNC, however it will be hanging, not playing or capturing a single byte. The 2 channel Altset kind of works, but sounds garbage. The 18 channel Altset works as intended. It needs to be cutted down to be usefull, channels 16 and 17 are the default "PC" outputs, i attached a asoundrc for the device, providing 9 stereo interfaces. In the default configuration with no other devices attached, mxout4 to mxout9 will be working stereoi outputs bound to faders on the mixer. I have not yet tested the MIDI interface. Kind regards, Julian

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[alsa-devel] [PATCH 0/6] ASoC: hdmi-codec: fixes and improvements
by Jerome Brunet 29 Apr '19

29 Apr '19

This patchset is a collection of fixes and improvement on the hdmi codec driver. It should be completely transparent for the current users of the codec. The most important change is removal the current_substream pointer which allows the codec to be used on codec-to-codec links. I plan to use this for the HDMI sound support of the Amlogic g12a SoC family. Jerome Brunet (6): ASoC: hdmi-codec: remove function name debug traces ASoC: hdmi-codec: unlock the device on startup errors ASoC: hdmi-codec: stream is already locked in hw_params ASoC: hdmi-codec: remove reference to the current substream ASoC: hdmi-codec: remove reference to the dai drivers in the private data ASoC: hdmi-codec: remove ops dependency on the dai id sound/soc/codecs/hdmi-codec.c | 259 ++++++++++++++++------------------ 1 file changed, 125 insertions(+), 134 deletions(-) -- 2.20.1

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[alsa-devel] [PATCH 1/1] ASoC: Intel: Skylake: change list empty check to warning
by Patrick Waterlander 29 Apr '19

29 Apr '19

NULL is a valid state for the module list when querying unique ID. Downgrade the empty condition from error to warning. Signed-off-by: Patrick Waterlander <patrick.waterlander(a)intel.com> diff --git a/sound/soc/intel/skylake/skl-sst.c b/sound/soc/intel/skylake/skl-sst.c index 5951bbdf1f1a..95e6a23538cd 100644 --- a/sound/soc/intel/skylake/skl-sst.c +++ b/sound/soc/intel/skylake/skl-sst.c @@ -324,7 +324,7 @@ static struct skl_module_table *skl_module_get_from_id( struct skl_module_table *module; if (list_empty(&ctx->module_list)) { - dev_err(ctx->dev, "Module list is empty\n"); + dev_warn(ctx->dev, "Module list is empty\n"); return NULL; } -- 2.17.1

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[alsa-devel] [PATCH v7 0/6] drm/bridge: sii902x: HDMI-audio support and some fixes
by Jyri Sarha 29 Apr '19

29 Apr '19

The already reviewed patches are in front. Not reviewed still patches 5-6. Changes since v6: - "dt-bindings: display: sii902x: Add HDMI audio bindings" - Replace references to ASoC (a Linux term) with more generic terms - Add "sil,"-prefix to "i2s-data-lanes"-property in the example node - "drm/bridge: sii902x: Implement HDMI audio support" - Do not use unsigned in sii902x_select_mclk_div()'s "distance" calculations to avoid bad type promotions to unsigned causing unexpected results - Always return the clock divisor by sii902x_select_mclk_div() - Disable regmap locking since the driver specific locking should be enough - Add missing mutex locking to the register access in the irq handler The previous round: https://patchwork.kernel.org/cover/10881169/ Jyri Sarha (5): drm/bridge: sii902x: Set output mode to HDMI or DVI according to EDID drm/bridge: sii902x: pixel clock unit is 10kHz instead of 1kHz dt-bindings: display: sii902x: Remove trailing white space dt-bindings: display: sii902x: Add HDMI audio bindings drm/bridge: sii902x: Implement HDMI audio support Tomi Valkeinen (1): drm/bridge: sii902x: add input_bus_flags .../bindings/display/bridge/sii902x.txt | 43 +- drivers/gpu/drm/bridge/sii902x.c | 488 +++++++++++++++++- 2 files changed, 523 insertions(+), 8 deletions(-) -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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[alsa-devel] [PATCH] ASoC: tlv320aic3x: Add support for high power analog output
by Saravanan Sekar 29 Apr '19

29 Apr '19

Add support to power and output level control for the analog high power output drivers HPOUT and HPCOM. Signed-off-by: Saravanan Sekar <sravanhome(a)gmail.com> --- sound/soc/codecs/tlv320aic3x.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index 516d17cb2182..d4bafac802eb 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -419,6 +419,12 @@ static const struct snd_kcontrol_new aic3x_snd_controls[] = { /* Pop reduction */ SOC_ENUM("Output Driver Power-On time", aic3x_poweron_time_enum), SOC_ENUM("Output Driver Ramp-up step", aic3x_rampup_step_enum), + + /* Analog HPOUT, HPCOM power and output level controls */ + SOC_DOUBLE_R("Analog output power control", HPROUT_CTRL, + HPRCOM_CTRL, 0, 1, 0), + SOC_DOUBLE_R("Analog output level control", HPROUT_CTRL, + HPRCOM_CTRL, 4, 9, 0), }; /* For other than tlv320aic3104 */ -- 2.17.1

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[alsa-devel] [PATCH 0/2] ASoC: fix hw_params/hw_free validity checks
by Jerome Brunet 29 Apr '19

29 Apr '19

While working on a codec, I have found an odd situation. The hw_params callback which was provided by the codec dai was not called as expected. However, the hw_free callback was called, even if hw_params was skipped. After debugging, I found out that the dai was considered invalid because it did not specify any rates, only rate_min and rate_max. That's a first problem. If a codec dai is considered invalid, hw_free should probably not be called either, that's a 2nd issue. This patchset is meant to solve both issues. Jerome Brunet (2): ASoC: fix valid stream condition ASoC: skip hw_free on codec dai for which the stream is invalid sound/soc/soc-pcm.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) -- 2.20.1

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[alsa-devel] [PATCH 1/2] ALSA: hda: fix unregister device twice on ASoC driver
by Bard liao 29 Apr '19

29 Apr '19

snd_hda_codec_device_new() is used by both legacy HDA and ASoC driver. However, we will call snd_hdac_device_unregister() in snd_hdac_ext_bus_device_remove() for ASoC device. This patch uses the type flag in hdac_device struct to determine is it a ASoC device or legacy HDA device and call snd_hdac_device_unregister() in snd_hda_codec_dev_free() only if it is a legacy HDA device. Signed-off-by: Bard liao <yung-chuan.liao(a)linux.intel.com> --- sound/pci/hda/hda_codec.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 701a69d856f5..b20eb7fc83eb 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -832,7 +832,13 @@ static int snd_hda_codec_dev_free(struct snd_device *device) struct hda_codec *codec = device->device_data; codec->in_freeing = 1; - snd_hdac_device_unregister(&codec->core); + /* + * snd_hda_codec_device_new() is used by legacy HDA and ASoC driver. + * We can't unregister ASoC device since it will be unregistered in + * snd_hdac_ext_bus_device_remove(). + */ + if (codec->core.type == HDA_DEV_LEGACY) + snd_hdac_device_unregister(&codec->core); codec_display_power(codec, false); put_device(hda_codec_dev(codec)); return 0; -- 2.17.1

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