sound/usb/mixer_maps.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *   Additional mixer mapping
  *
  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
  */

 struct usbmix_dB_map {
 	u32 min;
 	u32 max;
 };

 struct usbmix_name_map {
 	int id;
 	const char *name;
 	int control;
 	struct usbmix_dB_map *dB;
 };

 struct usbmix_selector_map {
 	int id;
 	int count;
 	const char **names;
 };

 struct usbmix_ctl_map {
 	u32 id;
 	const struct usbmix_name_map *map;
 	const struct usbmix_selector_map *selector_map;
 	int ignore_ctl_error;
 };

 /*
  * USB control mappers for SB Exitigy
  */

 /*
  * Topology of SB Extigy (see on the wide screen :)

 USB_IN[1] --->FU[2]------------------------------+->MU[16]-->PU[17]-+->FU[18]--+->EU[27]--+->EU[21]-->FU[22]--+->FU[23] > Dig_OUT[24]
                                                  ^                  |          |          |                   |
 USB_IN[3] -+->SU[5]-->FU[6]--+->MU[14] ->PU[15]->+                  |          |          |                   +->FU[25] > Dig_OUT[26]
            ^                 ^                   |                  |          |          |
 Dig_IN[4] -+                 |                   |                  |          |          +->FU[28]---------------------> Spk_OUT[19]
                              |                   |                  |          |
 Lin-IN[7] -+-->FU[8]---------+                   |                  |          +----------------------------------------> Hph_OUT[20]
            |                                     |                  |
 Mic-IN[9] --+->FU[10]----------------------------+                  |
            ||                                                       |
            ||  +----------------------------------------------------+
            VV  V
            ++--+->SU[11]-->FU[12] --------------------------------------------------------------------------------------> USB_OUT[13]
 */

 static struct usbmix_name_map extigy_map[] = {
 	/* 1: IT pcm */
 	{ 2, "PCM Playback" }, /* FU */
 	/* 3: IT pcm */
 	/* 4: IT digital in */
 	{ 5, NULL }, /* DISABLED: this seems to be bogus on some firmware */
 	{ 6, "Digital In" }, /* FU */
 	/* 7: IT line */
 	{ 8, "Line Playback" }, /* FU */
 	/* 9: IT mic */
 	{ 10, "Mic Playback" }, /* FU */
 	{ 11, "Capture Source" }, /* SU */
 	{ 12, "Capture" }, /* FU */
 	/* 13: OT pcm capture */
 	/* 14: MU (w/o controls) */
 	/* 15: PU (3D enh) */
 	/* 16: MU (w/o controls) */
 	{ 17, NULL, 1 }, /* DISABLED: PU-switch (any effect?) */
 	{ 17, "Channel Routing", 2 },	/* PU: mode select */
 	{ 18, "Tone Control - Bass", UAC_FU_BASS }, /* FU */
 	{ 18, "Tone Control - Treble", UAC_FU_TREBLE }, /* FU */
 	{ 18, "Master Playback" }, /* FU; others */
 	/* 19: OT speaker */
 	/* 20: OT headphone */
 	{ 21, NULL }, /* DISABLED: EU (for what?) */
 	{ 22, "Digital Out Playback" }, /* FU */
 	{ 23, "Digital Out1 Playback" }, /* FU */  /* FIXME: corresponds to 24 */
 	/* 24: OT digital out */
 	{ 25, "IEC958 Optical Playback" }, /* FU */
 	{ 26, "IEC958 Optical Playback" }, /* OT */
 	{ 27, NULL }, /* DISABLED: EU (for what?) */
 	/* 28: FU speaker (mute) */
 	{ 29, NULL }, /* Digital Input Playback Source? */
 	{ 0 } /* terminator */
 };

 /* Sound Blaster MP3+ controls mapping
  * The default mixer channels have totally misleading names,
  * e.g. no Master and fake PCM volume
  *			Pavel Mihaylov <bin@bash.info>
  */
 static struct usbmix_dB_map mp3plus_dB_1 = {.min = -4781, .max = 0};
 						/* just guess */
 static struct usbmix_dB_map mp3plus_dB_2 = {.min = -1781, .max = 618};
 						/* just guess */

 static struct usbmix_name_map mp3plus_map[] = {
 	/* 1: IT pcm */
 	/* 2: IT mic */
 	/* 3: IT line */
 	/* 4: IT digital in */
 	/* 5: OT digital out */
 	/* 6: OT speaker */
 	/* 7: OT pcm capture */
 	{ 8, "Capture Source" }, /* FU, default PCM Capture Source */
 		/* (Mic, Input 1 = Line input, Input 2 = Optical input) */
 	{ 9, "Master Playback" }, /* FU, default Speaker 1 */
 	/* { 10, "Mic Capture", 1 }, */ /* FU, Mic Capture */
 	{ 10, /* "Mic Capture", */ NULL, 2, .dB = &mp3plus_dB_2 },
 		/* FU, Mic Capture */
 	{ 10, "Mic Boost", 7 }, /* FU, default Auto Gain Input */
 	{ 11, "Line Capture", .dB = &mp3plus_dB_2 },
 		/* FU, default PCM Capture */
 	{ 12, "Digital In Playback" }, /* FU, default PCM 1 */
 	{ 13, /* "Mic Playback", */ .dB = &mp3plus_dB_1 },
 		/* FU, default Mic Playback */
 	{ 14, "Line Playback", .dB = &mp3plus_dB_1 }, /* FU, default Speaker */
 	/* 15: MU */
 	{ 0 } /* terminator */
 };

 /* Topology of SB Audigy 2 NX

           +----------------------------->EU[27]--+
           |                                      v
           | +----------------------------------->SU[29]---->FU[22]-->Dig_OUT[24]
           | |                                    ^
 USB_IN[1]-+------------+              +->EU[17]->+->FU[11]-+
             |          v              |          v         |
 Dig_IN[4]---+->FU[6]-->MU[16]->FU[18]-+->EU[21]->SU[31]----->FU[30]->Hph_OUT[20]
             |          ^              |                    |
 Lin_IN[7]-+--->FU[8]---+              +->EU[23]->FU[28]------------->Spk_OUT[19]
           | |                                              v
           +--->FU[12]------------------------------------->SU[14]--->USB_OUT[15]
             |                                              ^
             +->FU[13]--------------------------------------+
 */
 static struct usbmix_name_map audigy2nx_map[] = {
 	/* 1: IT pcm playback */
 	/* 4: IT digital in */
 	{ 6, "Digital In Playback" }, /* FU */
 	/* 7: IT line in */
 	{ 8, "Line Playback" }, /* FU */
 	{ 11, "What-U-Hear Capture" }, /* FU */
 	{ 12, "Line Capture" }, /* FU */
 	{ 13, "Digital In Capture" }, /* FU */
 	{ 14, "Capture Source" }, /* SU */
 	/* 15: OT pcm capture */
 	/* 16: MU w/o controls */
 	{ 17, NULL }, /* DISABLED: EU (for what?) */
 	{ 18, "Master Playback" }, /* FU */
 	/* 19: OT speaker */
 	/* 20: OT headphone */
 	{ 21, NULL }, /* DISABLED: EU (for what?) */
 	{ 22, "Digital Out Playback" }, /* FU */
 	{ 23, NULL }, /* DISABLED: EU (for what?) */
 	/* 24: OT digital out */
 	{ 27, NULL }, /* DISABLED: EU (for what?) */
 	{ 28, "Speaker Playback" }, /* FU */
 	{ 29, "Digital Out Source" }, /* SU */
 	{ 30, "Headphone Playback" }, /* FU */
 	{ 31, "Headphone Source" }, /* SU */
 	{ 0 } /* terminator */
 };

 static struct usbmix_name_map mbox1_map[] = {
 	{ 1, "Clock" },
 	{ 0 } /* terminator */
 };

 static struct usbmix_selector_map c400_selectors[] = {
 	{
 		.id = 0x80,
 		.count = 2,
 		.names = (const char*[]) {"Internal", "SPDIF"}
 	},
 	{ 0 } /* terminator */
 };

 static struct usbmix_selector_map audigy2nx_selectors[] = {
 	{
 		.id = 14, /* Capture Source */
 		.count = 3,
 		.names = (const char*[]) {"Line", "Digital In", "What-U-Hear"}
 	},
 	{
 		.id = 29, /* Digital Out Source */
 		.count = 3,
 		.names = (const char*[]) {"Front", "PCM", "Digital In"}
 	},
 	{
 		.id = 31, /* Headphone Source */
 		.count = 2,
 		.names = (const char*[]) {"Front", "Side"}
 	},
 	{ 0 } /* terminator */
 };

 /* Creative SoundBlaster Live! 24-bit External */
 static struct usbmix_name_map live24ext_map[] = {
 	/* 2: PCM Playback Volume */
 	{ 5, "Mic Capture" }, /* FU, default PCM Capture Volume */
 	{ 0 } /* terminator */
 };

 /* LineX FM Transmitter entry - needed to bypass controls bug */
 static struct usbmix_name_map linex_map[] = {
 	/* 1: IT pcm */
 	/* 2: OT Speaker */
 	{ 3, "Master" }, /* FU: master volume - left / right / mute */
 	{ 0 } /* terminator */
 };

 static struct usbmix_name_map maya44_map[] = {
 	/* 1: IT line */
 	{ 2, "Line Playback" }, /* FU */
 	/* 3: IT line */
 	{ 4, "Line Playback" }, /* FU */
 	/* 5: IT pcm playback */
 	/* 6: MU */
 	{ 7, "Master Playback" }, /* FU */
 	/* 8: OT speaker */
 	/* 9: IT line */
 	{ 10, "Line Capture" }, /* FU */
 	/* 11: MU */
 	/* 12: OT pcm capture */
 	{ }
 };

 /* Section "justlink_map" below added by James Courtier-Dutton <James@superbug.demon.co.uk>
  * sourced from Maplin Electronics (http://www.maplin.co.uk), part number A56AK
  * Part has 2 connectors that act as a single output. (TOSLINK Optical for digital out, and 3.5mm Jack for Analogue out.)
  * The USB Mixer publishes a Microphone and extra Volume controls for it, but none exist on the device,
  * so this map removes all unwanted sliders from alsamixer
  */

 static struct usbmix_name_map justlink_map[] = {
 	/* 1: IT pcm playback */
 	/* 2: Not present */
 	{ 3, NULL}, /* IT mic (No mic input on device) */
 	/* 4: Not present */
 	/* 5: OT speacker */
 	/* 6: OT pcm capture */
 	{ 7, "Master Playback" }, /* Mute/volume for speaker */
 	{ 8, NULL }, /* Capture Switch (No capture inputs on device) */
 	{ 9, NULL }, /* Capture Mute/volume (No capture inputs on device */
 	/* 0xa: Not present */
 	/* 0xb: MU (w/o controls) */
 	{ 0xc, NULL }, /* Mic feedback Mute/volume (No capture inputs on device) */
 	{ 0 } /* terminator */
 };

 /* TerraTec Aureon 5.1 MkII USB */
 static struct usbmix_name_map aureon_51_2_map[] = {
 	/* 1: IT USB */
 	/* 2: IT Mic */
 	/* 3: IT Line */
 	/* 4: IT SPDIF */
 	/* 5: OT SPDIF */
 	/* 6: OT Speaker */
 	/* 7: OT USB */
 	{ 8, "Capture Source" }, /* SU */
 	{ 9, "Master Playback" }, /* FU */
 	{ 10, "Mic Capture" }, /* FU */
 	{ 11, "Line Capture" }, /* FU */
 	{ 12, "IEC958 In Capture" }, /* FU */
 	{ 13, "Mic Playback" }, /* FU */
 	{ 14, "Line Playback" }, /* FU */
 	/* 15: MU */
 	{} /* terminator */
 };

 static struct usbmix_name_map scratch_live_map[] = {
 	/* 1: IT Line 1 (USB streaming) */
 	/* 2: OT Line 1 (Speaker) */
 	/* 3: IT Line 1 (Line connector) */
 	{ 4, "Line 1 In" }, /* FU */
 	/* 5: OT Line 1 (USB streaming) */
 	/* 6: IT Line 2 (USB streaming) */
 	/* 7: OT Line 2 (Speaker) */
 	/* 8: IT Line 2 (Line connector) */
 	{ 9, "Line 2 In" }, /* FU */
 	/* 10: OT Line 2 (USB streaming) */
 	/* 11: IT Mic (Line connector) */
 	/* 12: OT Mic (USB streaming) */
 	{ 0 } /* terminator */
 };

 static struct usbmix_name_map ebox44_map[] = {
 	{ 4, NULL }, /* FU */
 	{ 6, NULL }, /* MU */
 	{ 7, NULL }, /* FU */
 	{ 10, NULL }, /* FU */
 	{ 11, NULL }, /* MU */
 	{ 0 }
 };

 /* "Gamesurround Muse Pocket LT" looks same like "Sound Blaster MP3+"
  *  most importand difference is SU[8], it should be set to "Capture Source"
  *  to make alsamixer and PA working properly.
  *  FIXME: or mp3plus_map should use "Capture Source" too,
  *  so this maps can be merget
  */
 static struct usbmix_name_map hercules_usb51_map[] = {
 	{ 8, "Capture Source" },	/* SU, default "PCM Capture Source" */
 	{ 9, "Master Playback" },	/* FU, default "Speaker Playback" */
 	{ 10, "Mic Boost", 7 },		/* FU, default "Auto Gain Input" */
 	{ 11, "Line Capture" },		/* FU, default "PCM Capture" */
 	{ 13, "Mic Bypass Playback" },	/* FU, default "Mic Playback" */
 	{ 14, "Line Bypass Playback" },	/* FU, default "Line Playback" */
 	{ 0 }				/* terminator */
 };

 /* Plantronics Gamecom 780 has a broken volume control, better to disable it */
 static struct usbmix_name_map gamecom780_map[] = {
 	{ 9, NULL }, /* FU, speaker out */
 	{}
 };

 /* some (all?) SCMS USB3318 devices are affected by a firmware lock up
  * when anything attempts to access FU 10 (control)
  */
 static const struct usbmix_name_map scms_usb3318_map[] = {
 	{ 10, NULL },
 	{ 0 }
 };

 /* Bose companion 5, the dB conversion factor is 16 instead of 256 */
 static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
 static struct usbmix_name_map bose_companion5_map[] = {
 	{ 3, NULL, .dB = &bose_companion5_dB },
 	{ 0 }	/* terminator */
 };

 /*
  * Dell usb dock with ALC4020 codec had a firmware problem where it got
  * screwed up when zero volume is passed; just skip it as a workaround
  *
  * Also the extension unit gives an access error, so skip it as well.
  */
 static const struct usbmix_name_map dell_alc4020_map[] = {
 	{ 4, NULL },	/* extension unit */
 	{ 16, NULL },
 	{ 19, NULL },
 	{ 0 }
 };

 /*
  * Control map entries
  */

 static struct usbmix_ctl_map usbmix_ctl_maps[] = {
 	{
 		.id = USB_ID(0x041e, 0x3000),
 		.map = extigy_map,
 		.ignore_ctl_error = 1,
 	},
 	{
 		.id = USB_ID(0x041e, 0x3010),
 		.map = mp3plus_map,
 	},
 	{
 		.id = USB_ID(0x041e, 0x3020),
 		.map = audigy2nx_map,
 		.selector_map = audigy2nx_selectors,
 	},
  	{
 		.id = USB_ID(0x041e, 0x3040),
 		.map = live24ext_map,
 	},
 	{
 		.id = USB_ID(0x041e, 0x3048),
 		.map = audigy2nx_map,
 		.selector_map = audigy2nx_selectors,
 	},
 	{	/* Logitech, Inc. QuickCam Pro for Notebooks */
 		.id = USB_ID(0x046d, 0x0991),
 		.ignore_ctl_error = 1,
 	},
 	{	/* Logitech, Inc. QuickCam E 3500 */
 		.id = USB_ID(0x046d, 0x09a4),
 		.ignore_ctl_error = 1,
 	},
 	{	/* Plantronics GameCom 780 */
 		.id = USB_ID(0x047f, 0xc010),
 		.map = gamecom780_map,
 	},
 	{
 		/* Hercules DJ Console (Windows Edition) */
 		.id = USB_ID(0x06f8, 0xb000),
 		.ignore_ctl_error = 1,
 	},
 	{
 		/* Hercules DJ Console (Macintosh Edition) */
 		.id = USB_ID(0x06f8, 0xd002),
 		.ignore_ctl_error = 1,
 	},
 	{
 		/* Hercules Gamesurround Muse Pocket LT
 		 * (USB 5.1 Channel Audio Adapter)
 		 */
 		.id = USB_ID(0x06f8, 0xc000),
 		.map = hercules_usb51_map,
 	},
 	{
 		.id = USB_ID(0x0763, 0x2030),
 		.selector_map = c400_selectors,
 	},
 	{
 		.id = USB_ID(0x0763, 0x2031),
 		.selector_map = c400_selectors,
 	},
 	{
 		.id = USB_ID(0x08bb, 0x2702),
 		.map = linex_map,
 		.ignore_ctl_error = 1,
 	},
 	{
 		.id = USB_ID(0x0a92, 0x0091),
 		.map = maya44_map,
 	},
 	{
 		.id = USB_ID(0x0c45, 0x1158),
 		.map = justlink_map,
 	},
 	{
 		.id = USB_ID(0x0ccd, 0x0028),
 		.map = aureon_51_2_map,
 	},
 	{
 		.id = USB_ID(0x0bda, 0x4014),
 		.map = dell_alc4020_map,
 	},
 	{
 		.id = USB_ID(0x0dba, 0x1000),
 		.map = mbox1_map,
 	},
 	{
 		.id = USB_ID(0x13e5, 0x0001),
 		.map = scratch_live_map,
 		.ignore_ctl_error = 1,
 	},
 	{
 		.id = USB_ID(0x200c, 0x1018),
 		.map = ebox44_map,
 	},
 	{
 		/* MAYA44 USB+ */
 		.id = USB_ID(0x2573, 0x0008),
 		.map = maya44_map,
 	},
 	{
 		/* KEF X300A */
 		.id = USB_ID(0x27ac, 0x1000),
 		.map = scms_usb3318_map,
 	},
 	{
 		/* Arcam rPAC */
 		.id = USB_ID(0x25c4, 0x0003),
 		.map = scms_usb3318_map,
 	},
 	{
 		/* Bose Companion 5 */
 		.id = USB_ID(0x05a7, 0x1020),
 		.map = bose_companion5_map,
 	},
 	{ 0 } /* terminator */
 };

 /*
  * Control map entries for UAC3 BADD profiles
  */

 static struct usbmix_name_map uac3_badd_generic_io_map[] = {
 	{ UAC3_BADD_FU_ID2, "Generic Out Playback" },
 	{ UAC3_BADD_FU_ID5, "Generic In Capture" },
 	{ 0 }					/* terminator */
 };
 static struct usbmix_name_map uac3_badd_headphone_map[] = {
 	{ UAC3_BADD_FU_ID2, "Headphone Playback" },
 	{ 0 }					/* terminator */
 };
 static struct usbmix_name_map uac3_badd_speaker_map[] = {
 	{ UAC3_BADD_FU_ID2, "Speaker Playback" },
 	{ 0 }					/* terminator */
 };
 static struct usbmix_name_map uac3_badd_microphone_map[] = {
 	{ UAC3_BADD_FU_ID5, "Mic Capture" },
 	{ 0 }					/* terminator */
 };
 /* Covers also 'headset adapter' profile */
 static struct usbmix_name_map uac3_badd_headset_map[] = {
 	{ UAC3_BADD_FU_ID2, "Headset Playback" },
 	{ UAC3_BADD_FU_ID5, "Headset Capture" },
 	{ UAC3_BADD_FU_ID7, "Sidetone Mixing" },
 	{ 0 }					/* terminator */
 };
 static struct usbmix_name_map uac3_badd_speakerphone_map[] = {
 	{ UAC3_BADD_FU_ID2, "Speaker Playback" },
 	{ UAC3_BADD_FU_ID5, "Mic Capture" },
 	{ 0 }					/* terminator */
 };

 static struct usbmix_ctl_map uac3_badd_usbmix_ctl_maps[] = {
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_GENERIC_IO,
 		.map = uac3_badd_generic_io_map,
 	},
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_HEADPHONE,
 		.map = uac3_badd_headphone_map,
 	},
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_SPEAKER,
 		.map = uac3_badd_speaker_map,
 	},
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_MICROPHONE,
 		.map = uac3_badd_microphone_map,
 	},
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_HEADSET,
 		.map = uac3_badd_headset_map,
 	},
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER,
 		.map = uac3_badd_headset_map,
 	},
 	{
 		.id = UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE,
 		.map = uac3_badd_speakerphone_map,
 	},
 	{ 0 } /* terminator */
 };
	// SPDX-License-Identifier: GPL-2.0-or-later
	/*
	* Additional mixer mapping
	*
	* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
	*/

	struct usbmix_dB_map {
	u32 min;
	u32 max;
	};

	struct usbmix_name_map {
	int id;
	const char *name;
	int control;
	struct usbmix_dB_map *dB;
	};

	struct usbmix_selector_map {
	int id;
	int count;
	const char **names;
	};

	struct usbmix_ctl_map {
	u32 id;
	const struct usbmix_name_map *map;
	const struct usbmix_selector_map *selector_map;
	int ignore_ctl_error;
	};

	/*
	* USB control mappers for SB Exitigy
	*/

	/*
	* Topology of SB Extigy (see on the wide screen :)

	USB_IN[1] --->FU[2]------------------------------+->MU[16]-->PU[17]-+->FU[18]--+->EU[27]--+->EU[21]-->FU[22]--+->FU[23] > Dig_OUT[24]
	^ \| \| \| \|
	USB_IN[3] -+->SU[5]-->FU[6]--+->MU[14] ->PU[15]->+ \| \| \| +->FU[25] > Dig_OUT[26]
	^ ^ \| \| \| \|
	Dig_IN[4] -+ \| \| \| \| +->FU[28]---------------------> Spk_OUT[19]
	\| \| \| \|
	Lin-IN[7] -+-->FU[8]---------+ \| \| +----------------------------------------> Hph_OUT[20]
	\| \| \|
	Mic-IN[9] --+->FU[10]----------------------------+ \|
	\|\| \|
	\|\| +----------------------------------------------------+
	VV V
	++--+->SU[11]-->FU[12] --------------------------------------------------------------------------------------> USB_OUT[13]
	*/

	static struct usbmix_name_map extigy_map[] = {
	/* 1: IT pcm */
	{ 2, "PCM Playback" }, /* FU */
	/* 3: IT pcm */
	/* 4: IT digital in */
	{ 5, NULL }, /* DISABLED: this seems to be bogus on some firmware */
	{ 6, "Digital In" }, /* FU */
	/* 7: IT line */
	{ 8, "Line Playback" }, /* FU */
	/* 9: IT mic */
	{ 10, "Mic Playback" }, /* FU */
	{ 11, "Capture Source" }, /* SU */
	{ 12, "Capture" }, /* FU */
	/* 13: OT pcm capture */
	/* 14: MU (w/o controls) */
	/* 15: PU (3D enh) */
	/* 16: MU (w/o controls) */
	{ 17, NULL, 1 }, /* DISABLED: PU-switch (any effect?) */
	{ 17, "Channel Routing", 2 }, /* PU: mode select */
	{ 18, "Tone Control - Bass", UAC_FU_BASS }, /* FU */
	{ 18, "Tone Control - Treble", UAC_FU_TREBLE }, /* FU */
	{ 18, "Master Playback" }, /* FU; others */
	/* 19: OT speaker */
	/* 20: OT headphone */
	{ 21, NULL }, /* DISABLED: EU (for what?) */
	{ 22, "Digital Out Playback" }, /* FU */
	{ 23, "Digital Out1 Playback" }, /* FU / / FIXME: corresponds to 24 */
	/* 24: OT digital out */
	{ 25, "IEC958 Optical Playback" }, /* FU */
	{ 26, "IEC958 Optical Playback" }, /* OT */
	{ 27, NULL }, /* DISABLED: EU (for what?) */
	/* 28: FU speaker (mute) */
	{ 29, NULL }, /* Digital Input Playback Source? */
	{ 0 } /* terminator */
	};

	/* Sound Blaster MP3+ controls mapping
	* The default mixer channels have totally misleading names,
	* e.g. no Master and fake PCM volume
	* Pavel Mihaylov <bin@bash.info>
	*/
	static struct usbmix_dB_map mp3plus_dB_1 = {.min = -4781, .max = 0};
	/* just guess */
	static struct usbmix_dB_map mp3plus_dB_2 = {.min = -1781, .max = 618};
	/* just guess */

	static struct usbmix_name_map mp3plus_map[] = {
	/* 1: IT pcm */
	/* 2: IT mic */
	/* 3: IT line */
	/* 4: IT digital in */
	/* 5: OT digital out */
	/* 6: OT speaker */
	/* 7: OT pcm capture */
	{ 8, "Capture Source" }, /* FU, default PCM Capture Source */
	/* (Mic, Input 1 = Line input, Input 2 = Optical input) */
	{ 9, "Master Playback" }, /* FU, default Speaker 1 */
	/* { 10, "Mic Capture", 1 }, / / FU, Mic Capture */
	{ 10, /* "Mic Capture", */ NULL, 2, .dB = &mp3plus_dB_2 },
	/* FU, Mic Capture */
	{ 10, "Mic Boost", 7 }, /* FU, default Auto Gain Input */
	{ 11, "Line Capture", .dB = &mp3plus_dB_2 },
	/* FU, default PCM Capture */
	{ 12, "Digital In Playback" }, /* FU, default PCM 1 */
	{ 13, /* "Mic Playback", */ .dB = &mp3plus_dB_1 },
	/* FU, default Mic Playback */
	{ 14, "Line Playback", .dB = &mp3plus_dB_1 }, /* FU, default Speaker */
	/* 15: MU */
	{ 0 } /* terminator */
	};

	/* Topology of SB Audigy 2 NX

	+----------------------------->EU[27]--+
	\| v
	\| +----------------------------------->SU[29]---->FU[22]-->Dig_OUT[24]
	\| \| ^
	USB_IN[1]-+------------+ +->EU[17]->+->FU[11]-+
	\| v \| v \|
	Dig_IN[4]---+->FU[6]-->MU[16]->FU[18]-+->EU[21]->SU[31]----->FU[30]->Hph_OUT[20]
	\| ^ \| \|
	Lin_IN[7]-+--->FU[8]---+ +->EU[23]->FU[28]------------->Spk_OUT[19]
	\| \| v
	+--->FU[12]------------------------------------->SU[14]--->USB_OUT[15]
	\| ^
	+->FU[13]--------------------------------------+
	*/
	static struct usbmix_name_map audigy2nx_map[] = {
	/* 1: IT pcm playback */
	/* 4: IT digital in */
	{ 6, "Digital In Playback" }, /* FU */
	/* 7: IT line in */
	{ 8, "Line Playback" }, /* FU */
	{ 11, "What-U-Hear Capture" }, /* FU */
	{ 12, "Line Capture" }, /* FU */
	{ 13, "Digital In Capture" }, /* FU */
	{ 14, "Capture Source" }, /* SU */
	/* 15: OT pcm capture */
	/* 16: MU w/o controls */
	{ 17, NULL }, /* DISABLED: EU (for what?) */
	{ 18, "Master Playback" }, /* FU */
	/* 19: OT speaker */
	/* 20: OT headphone */
	{ 21, NULL }, /* DISABLED: EU (for what?) */
	{ 22, "Digital Out Playback" }, /* FU */
	{ 23, NULL }, /* DISABLED: EU (for what?) */
	/* 24: OT digital out */
	{ 27, NULL }, /* DISABLED: EU (for what?) */
	{ 28, "Speaker Playback" }, /* FU */
	{ 29, "Digital Out Source" }, /* SU */
	{ 30, "Headphone Playback" }, /* FU */
	{ 31, "Headphone Source" }, /* SU */
	{ 0 } /* terminator */
	};

	static struct usbmix_name_map mbox1_map[] = {
	{ 1, "Clock" },
	{ 0 } /* terminator */
	};

	static struct usbmix_selector_map c400_selectors[] = {
	{
	.id = 0x80,
	.count = 2,
	.names = (const char*[]) {"Internal", "SPDIF"}
	},
	{ 0 } /* terminator */
	};

	static struct usbmix_selector_map audigy2nx_selectors[] = {
	{
	.id = 14, /* Capture Source */
	.count = 3,
	.names = (const char*[]) {"Line", "Digital In", "What-U-Hear"}
	},
	{
	.id = 29, /* Digital Out Source */
	.count = 3,
	.names = (const char*[]) {"Front", "PCM", "Digital In"}
	},
	{
	.id = 31, /* Headphone Source */
	.count = 2,
	.names = (const char*[]) {"Front", "Side"}
	},
	{ 0 } /* terminator */
	};

	/* Creative SoundBlaster Live! 24-bit External */
	static struct usbmix_name_map live24ext_map[] = {
	/* 2: PCM Playback Volume */
	{ 5, "Mic Capture" }, /* FU, default PCM Capture Volume */
	{ 0 } /* terminator */
	};

	/* LineX FM Transmitter entry - needed to bypass controls bug */
	static struct usbmix_name_map linex_map[] = {
	/* 1: IT pcm */
	/* 2: OT Speaker */
	{ 3, "Master" }, /* FU: master volume - left / right / mute */
	{ 0 } /* terminator */
	};

	static struct usbmix_name_map maya44_map[] = {
	/* 1: IT line */
	{ 2, "Line Playback" }, /* FU */
	/* 3: IT line */
	{ 4, "Line Playback" }, /* FU */
	/* 5: IT pcm playback */
	/* 6: MU */
	{ 7, "Master Playback" }, /* FU */
	/* 8: OT speaker */
	/* 9: IT line */
	{ 10, "Line Capture" }, /* FU */
	/* 11: MU */
	/* 12: OT pcm capture */
	{ }
	};

	/* Section "justlink_map" below added by James Courtier-Dutton <James@superbug.demon.co.uk>
	* sourced from Maplin Electronics (http://www.maplin.co.uk), part number A56AK
	* Part has 2 connectors that act as a single output. (TOSLINK Optical for digital out, and 3.5mm Jack for Analogue out.)
	* The USB Mixer publishes a Microphone and extra Volume controls for it, but none exist on the device,
	* so this map removes all unwanted sliders from alsamixer
	*/

	static struct usbmix_name_map justlink_map[] = {
	/* 1: IT pcm playback */
	/* 2: Not present */
	{ 3, NULL}, /* IT mic (No mic input on device) */
	/* 4: Not present */
	/* 5: OT speacker */
	/* 6: OT pcm capture */
	{ 7, "Master Playback" }, /* Mute/volume for speaker */
	{ 8, NULL }, /* Capture Switch (No capture inputs on device) */
	{ 9, NULL }, /* Capture Mute/volume (No capture inputs on device */
	/* 0xa: Not present */
	/* 0xb: MU (w/o controls) */
	{ 0xc, NULL }, /* Mic feedback Mute/volume (No capture inputs on device) */
	{ 0 } /* terminator */
	};

	/* TerraTec Aureon 5.1 MkII USB */
	static struct usbmix_name_map aureon_51_2_map[] = {
	/* 1: IT USB */
	/* 2: IT Mic */
	/* 3: IT Line */
	/* 4: IT SPDIF */
	/* 5: OT SPDIF */
	/* 6: OT Speaker */
	/* 7: OT USB */
	{ 8, "Capture Source" }, /* SU */
	{ 9, "Master Playback" }, /* FU */
	{ 10, "Mic Capture" }, /* FU */
	{ 11, "Line Capture" }, /* FU */
	{ 12, "IEC958 In Capture" }, /* FU */
	{ 13, "Mic Playback" }, /* FU */
	{ 14, "Line Playback" }, /* FU */
	/* 15: MU */
	{} /* terminator */
	};

	static struct usbmix_name_map scratch_live_map[] = {
	/* 1: IT Line 1 (USB streaming) */
	/* 2: OT Line 1 (Speaker) */
	/* 3: IT Line 1 (Line connector) */
	{ 4, "Line 1 In" }, /* FU */
	/* 5: OT Line 1 (USB streaming) */
	/* 6: IT Line 2 (USB streaming) */
	/* 7: OT Line 2 (Speaker) */
	/* 8: IT Line 2 (Line connector) */
	{ 9, "Line 2 In" }, /* FU */
	/* 10: OT Line 2 (USB streaming) */
	/* 11: IT Mic (Line connector) */
	/* 12: OT Mic (USB streaming) */
	{ 0 } /* terminator */
	};

	static struct usbmix_name_map ebox44_map[] = {
	{ 4, NULL }, /* FU */
	{ 6, NULL }, /* MU */
	{ 7, NULL }, /* FU */
	{ 10, NULL }, /* FU */
	{ 11, NULL }, /* MU */
	{ 0 }
	};

	/* "Gamesurround Muse Pocket LT" looks same like "Sound Blaster MP3+"
	* most importand difference is SU[8], it should be set to "Capture Source"
	* to make alsamixer and PA working properly.
	* FIXME: or mp3plus_map should use "Capture Source" too,
	* so this maps can be merget
	*/
	static struct usbmix_name_map hercules_usb51_map[] = {
	{ 8, "Capture Source" }, /* SU, default "PCM Capture Source" */
	{ 9, "Master Playback" }, /* FU, default "Speaker Playback" */
	{ 10, "Mic Boost", 7 }, /* FU, default "Auto Gain Input" */
	{ 11, "Line Capture" }, /* FU, default "PCM Capture" */
	{ 13, "Mic Bypass Playback" }, /* FU, default "Mic Playback" */
	{ 14, "Line Bypass Playback" }, /* FU, default "Line Playback" */
	{ 0 } /* terminator */
	};

	/* Plantronics Gamecom 780 has a broken volume control, better to disable it */
	static struct usbmix_name_map gamecom780_map[] = {
	{ 9, NULL }, /* FU, speaker out */
	{}
	};

	/* some (all?) SCMS USB3318 devices are affected by a firmware lock up
	* when anything attempts to access FU 10 (control)
	*/
	static const struct usbmix_name_map scms_usb3318_map[] = {
	{ 10, NULL },
	{ 0 }
	};

	/* Bose companion 5, the dB conversion factor is 16 instead of 256 */
	static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
	static struct usbmix_name_map bose_companion5_map[] = {
	{ 3, NULL, .dB = &bose_companion5_dB },
	{ 0 } /* terminator */
	};

	/*
	* Dell usb dock with ALC4020 codec had a firmware problem where it got
	* screwed up when zero volume is passed; just skip it as a workaround
	*
	* Also the extension unit gives an access error, so skip it as well.
	*/
	static const struct usbmix_name_map dell_alc4020_map[] = {
	{ 4, NULL }, /* extension unit */
	{ 16, NULL },
	{ 19, NULL },
	{ 0 }
	};

	/*
	* Control map entries
	*/

	static struct usbmix_ctl_map usbmix_ctl_maps[] = {
	{
	.id = USB_ID(0x041e, 0x3000),
	.map = extigy_map,
	.ignore_ctl_error = 1,
	},
	{
	.id = USB_ID(0x041e, 0x3010),
	.map = mp3plus_map,
	},
	{
	.id = USB_ID(0x041e, 0x3020),
	.map = audigy2nx_map,
	.selector_map = audigy2nx_selectors,
	},
	{
	.id = USB_ID(0x041e, 0x3040),
	.map = live24ext_map,
	},
	{
	.id = USB_ID(0x041e, 0x3048),
	.map = audigy2nx_map,
	.selector_map = audigy2nx_selectors,
	},
	{ /* Logitech, Inc. QuickCam Pro for Notebooks */
	.id = USB_ID(0x046d, 0x0991),
	.ignore_ctl_error = 1,
	},
	{ /* Logitech, Inc. QuickCam E 3500 */
	.id = USB_ID(0x046d, 0x09a4),
	.ignore_ctl_error = 1,
	},
	{ /* Plantronics GameCom 780 */
	.id = USB_ID(0x047f, 0xc010),
	.map = gamecom780_map,
	},
	{
	/* Hercules DJ Console (Windows Edition) */
	.id = USB_ID(0x06f8, 0xb000),
	.ignore_ctl_error = 1,
	},
	{
	/* Hercules DJ Console (Macintosh Edition) */
	.id = USB_ID(0x06f8, 0xd002),
	.ignore_ctl_error = 1,
	},
	{
	/* Hercules Gamesurround Muse Pocket LT
	* (USB 5.1 Channel Audio Adapter)
	*/
	.id = USB_ID(0x06f8, 0xc000),
	.map = hercules_usb51_map,
	},
	{
	.id = USB_ID(0x0763, 0x2030),
	.selector_map = c400_selectors,
	},
	{
	.id = USB_ID(0x0763, 0x2031),
	.selector_map = c400_selectors,
	},
	{
	.id = USB_ID(0x08bb, 0x2702),
	.map = linex_map,
	.ignore_ctl_error = 1,
	},
	{
	.id = USB_ID(0x0a92, 0x0091),
	.map = maya44_map,
	},
	{
	.id = USB_ID(0x0c45, 0x1158),
	.map = justlink_map,
	},
	{
	.id = USB_ID(0x0ccd, 0x0028),
	.map = aureon_51_2_map,
	},
	{
	.id = USB_ID(0x0bda, 0x4014),
	.map = dell_alc4020_map,
	},
	{
	.id = USB_ID(0x0dba, 0x1000),
	.map = mbox1_map,
	},
	{
	.id = USB_ID(0x13e5, 0x0001),
	.map = scratch_live_map,
	.ignore_ctl_error = 1,
	},
	{
	.id = USB_ID(0x200c, 0x1018),
	.map = ebox44_map,
	},
	{
	/* MAYA44 USB+ */
	.id = USB_ID(0x2573, 0x0008),
	.map = maya44_map,
	},
	{
	/* KEF X300A */
	.id = USB_ID(0x27ac, 0x1000),
	.map = scms_usb3318_map,
	},
	{
	/* Arcam rPAC */
	.id = USB_ID(0x25c4, 0x0003),
	.map = scms_usb3318_map,
	},
	{
	/* Bose Companion 5 */
	.id = USB_ID(0x05a7, 0x1020),
	.map = bose_companion5_map,
	},
	{ 0 } /* terminator */
	};

	/*
	* Control map entries for UAC3 BADD profiles
	*/

	static struct usbmix_name_map uac3_badd_generic_io_map[] = {
	{ UAC3_BADD_FU_ID2, "Generic Out Playback" },
	{ UAC3_BADD_FU_ID5, "Generic In Capture" },
	{ 0 } /* terminator */
	};
	static struct usbmix_name_map uac3_badd_headphone_map[] = {
	{ UAC3_BADD_FU_ID2, "Headphone Playback" },
	{ 0 } /* terminator */
	};
	static struct usbmix_name_map uac3_badd_speaker_map[] = {
	{ UAC3_BADD_FU_ID2, "Speaker Playback" },
	{ 0 } /* terminator */
	};
	static struct usbmix_name_map uac3_badd_microphone_map[] = {
	{ UAC3_BADD_FU_ID5, "Mic Capture" },
	{ 0 } /* terminator */
	};
	/* Covers also 'headset adapter' profile */
	static struct usbmix_name_map uac3_badd_headset_map[] = {
	{ UAC3_BADD_FU_ID2, "Headset Playback" },
	{ UAC3_BADD_FU_ID5, "Headset Capture" },
	{ UAC3_BADD_FU_ID7, "Sidetone Mixing" },
	{ 0 } /* terminator */
	};
	static struct usbmix_name_map uac3_badd_speakerphone_map[] = {
	{ UAC3_BADD_FU_ID2, "Speaker Playback" },
	{ UAC3_BADD_FU_ID5, "Mic Capture" },
	{ 0 } /* terminator */
	};

	static struct usbmix_ctl_map uac3_badd_usbmix_ctl_maps[] = {
	{
	.id = UAC3_FUNCTION_SUBCLASS_GENERIC_IO,
	.map = uac3_badd_generic_io_map,
	},
	{
	.id = UAC3_FUNCTION_SUBCLASS_HEADPHONE,
	.map = uac3_badd_headphone_map,
	},
	{
	.id = UAC3_FUNCTION_SUBCLASS_SPEAKER,
	.map = uac3_badd_speaker_map,
	},
	{
	.id = UAC3_FUNCTION_SUBCLASS_MICROPHONE,
	.map = uac3_badd_microphone_map,
	},
	{
	.id = UAC3_FUNCTION_SUBCLASS_HEADSET,
	.map = uac3_badd_headset_map,
	},
	{
	.id = UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER,
	.map = uac3_badd_headset_map,
	},
	{
	.id = UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE,
	.map = uac3_badd_speakerphone_map,
	},
	{ 0 } /* terminator */
	};