1f0b5e634SDaniel Mack /* 2f0b5e634SDaniel Mack * (Tentative) USB Audio Driver for ALSA 3f0b5e634SDaniel Mack * 4f0b5e634SDaniel Mack * Mixer control part 5f0b5e634SDaniel Mack * 6f0b5e634SDaniel Mack * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> 7f0b5e634SDaniel Mack * 8f0b5e634SDaniel Mack * Many codes borrowed from audio.c by 9f0b5e634SDaniel Mack * Alan Cox (alan@lxorguk.ukuu.org.uk) 10f0b5e634SDaniel Mack * Thomas Sailer (sailer@ife.ee.ethz.ch) 11f0b5e634SDaniel Mack * 12f0b5e634SDaniel Mack * 13f0b5e634SDaniel Mack * This program is free software; you can redistribute it and/or modify 14f0b5e634SDaniel Mack * it under the terms of the GNU General Public License as published by 15f0b5e634SDaniel Mack * the Free Software Foundation; either version 2 of the License, or 16f0b5e634SDaniel Mack * (at your option) any later version. 17f0b5e634SDaniel Mack * 18f0b5e634SDaniel Mack * This program is distributed in the hope that it will be useful, 19f0b5e634SDaniel Mack * but WITHOUT ANY WARRANTY; without even the implied warranty of 20f0b5e634SDaniel Mack * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21f0b5e634SDaniel Mack * GNU General Public License for more details. 22f0b5e634SDaniel Mack * 23f0b5e634SDaniel Mack * You should have received a copy of the GNU General Public License 24f0b5e634SDaniel Mack * along with this program; if not, write to the Free Software 25f0b5e634SDaniel Mack * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 26f0b5e634SDaniel Mack * 27f0b5e634SDaniel Mack */ 28f0b5e634SDaniel Mack 29157a57b6SDaniel Mack /* 30157a57b6SDaniel Mack * TODOs, for both the mixer and the streaming interfaces: 31157a57b6SDaniel Mack * 32157a57b6SDaniel Mack * - support for UAC2 effect units 33157a57b6SDaniel Mack * - support for graphical equalizers 34157a57b6SDaniel Mack * - RANGE and MEM set commands (UAC2) 35157a57b6SDaniel Mack * - RANGE and MEM interrupt dispatchers (UAC2) 36157a57b6SDaniel Mack * - audio channel clustering (UAC2) 37157a57b6SDaniel Mack * - audio sample rate converter units (UAC2) 38157a57b6SDaniel Mack * - proper handling of clock multipliers (UAC2) 39157a57b6SDaniel Mack * - dispatch clock change notifications (UAC2) 40157a57b6SDaniel Mack * - stop PCM streams which use a clock that became invalid 41157a57b6SDaniel Mack * - stop PCM streams which use a clock selector that has changed 42157a57b6SDaniel Mack * - parse available sample rates again when clock sources changed 43157a57b6SDaniel Mack */ 44157a57b6SDaniel Mack 45f0b5e634SDaniel Mack #include <linux/bitops.h> 46f0b5e634SDaniel Mack #include <linux/init.h> 47f0b5e634SDaniel Mack #include <linux/list.h> 48f0b5e634SDaniel Mack #include <linux/slab.h> 49f0b5e634SDaniel Mack #include <linux/string.h> 50f0b5e634SDaniel Mack #include <linux/usb.h> 51f0b5e634SDaniel Mack #include <linux/usb/audio.h> 5223caaf19SDaniel Mack #include <linux/usb/audio-v2.h> 53f0b5e634SDaniel Mack 54f0b5e634SDaniel Mack #include <sound/core.h> 55f0b5e634SDaniel Mack #include <sound/control.h> 56f0b5e634SDaniel Mack #include <sound/hwdep.h> 57f0b5e634SDaniel Mack #include <sound/info.h> 58f0b5e634SDaniel Mack #include <sound/tlv.h> 59f0b5e634SDaniel Mack 60f0b5e634SDaniel Mack #include "usbaudio.h" 61f0b5e634SDaniel Mack #include "mixer.h" 62f0b5e634SDaniel Mack #include "helper.h" 63f0b5e634SDaniel Mack #include "mixer_quirks.h" 6488a8516aSOliver Neukum #include "power.h" 65f0b5e634SDaniel Mack 66f0b5e634SDaniel Mack #define MAX_ID_ELEMS 256 67f0b5e634SDaniel Mack 68f0b5e634SDaniel Mack struct usb_audio_term { 69f0b5e634SDaniel Mack int id; 70f0b5e634SDaniel Mack int type; 71f0b5e634SDaniel Mack int channels; 72f0b5e634SDaniel Mack unsigned int chconfig; 73f0b5e634SDaniel Mack int name; 74f0b5e634SDaniel Mack }; 75f0b5e634SDaniel Mack 76f0b5e634SDaniel Mack struct usbmix_name_map; 77f0b5e634SDaniel Mack 78f0b5e634SDaniel Mack struct mixer_build { 79f0b5e634SDaniel Mack struct snd_usb_audio *chip; 80f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 81f0b5e634SDaniel Mack unsigned char *buffer; 82f0b5e634SDaniel Mack unsigned int buflen; 83f0b5e634SDaniel Mack DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); 84f0b5e634SDaniel Mack struct usb_audio_term oterm; 85f0b5e634SDaniel Mack const struct usbmix_name_map *map; 86f0b5e634SDaniel Mack const struct usbmix_selector_map *selector_map; 87f0b5e634SDaniel Mack }; 88f0b5e634SDaniel Mack 891cdfa9f3SJoseph Teichman /*E-mu 0202/0404/0204 eXtension Unit(XU) control*/ 90f0b5e634SDaniel Mack enum { 91f0b5e634SDaniel Mack USB_XU_CLOCK_RATE = 0xe301, 92f0b5e634SDaniel Mack USB_XU_CLOCK_SOURCE = 0xe302, 93f0b5e634SDaniel Mack USB_XU_DIGITAL_IO_STATUS = 0xe303, 94f0b5e634SDaniel Mack USB_XU_DEVICE_OPTIONS = 0xe304, 95f0b5e634SDaniel Mack USB_XU_DIRECT_MONITORING = 0xe305, 96f0b5e634SDaniel Mack USB_XU_METERING = 0xe306 97f0b5e634SDaniel Mack }; 98f0b5e634SDaniel Mack enum { 99f0b5e634SDaniel Mack USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ 100f0b5e634SDaniel Mack USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ 101f0b5e634SDaniel Mack USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ 102f0b5e634SDaniel Mack USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ 103f0b5e634SDaniel Mack }; 104f0b5e634SDaniel Mack 105f0b5e634SDaniel Mack /* 106f0b5e634SDaniel Mack * manual mapping of mixer names 107f0b5e634SDaniel Mack * if the mixer topology is too complicated and the parsed names are 108f0b5e634SDaniel Mack * ambiguous, add the entries in usbmixer_maps.c. 109f0b5e634SDaniel Mack */ 110f0b5e634SDaniel Mack #include "mixer_maps.c" 111f0b5e634SDaniel Mack 112f0b5e634SDaniel Mack static const struct usbmix_name_map * 113f0b5e634SDaniel Mack find_map(struct mixer_build *state, int unitid, int control) 114f0b5e634SDaniel Mack { 115f0b5e634SDaniel Mack const struct usbmix_name_map *p = state->map; 116f0b5e634SDaniel Mack 117f0b5e634SDaniel Mack if (!p) 118f0b5e634SDaniel Mack return NULL; 119f0b5e634SDaniel Mack 120f0b5e634SDaniel Mack for (p = state->map; p->id; p++) { 121f0b5e634SDaniel Mack if (p->id == unitid && 122f0b5e634SDaniel Mack (!control || !p->control || control == p->control)) 123f0b5e634SDaniel Mack return p; 124f0b5e634SDaniel Mack } 125f0b5e634SDaniel Mack return NULL; 126f0b5e634SDaniel Mack } 127f0b5e634SDaniel Mack 128f0b5e634SDaniel Mack /* get the mapped name if the unit matches */ 129f0b5e634SDaniel Mack static int 130f0b5e634SDaniel Mack check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) 131f0b5e634SDaniel Mack { 132f0b5e634SDaniel Mack if (!p || !p->name) 133f0b5e634SDaniel Mack return 0; 134f0b5e634SDaniel Mack 135f0b5e634SDaniel Mack buflen--; 136f0b5e634SDaniel Mack return strlcpy(buf, p->name, buflen); 137f0b5e634SDaniel Mack } 138f0b5e634SDaniel Mack 1395aeee342STakashi Iwai /* ignore the error value if ignore_ctl_error flag is set */ 1405aeee342STakashi Iwai #define filter_error(cval, err) \ 1413360b84bSTakashi Iwai ((cval)->head.mixer->ignore_ctl_error ? 0 : (err)) 1425aeee342STakashi Iwai 143f0b5e634SDaniel Mack /* check whether the control should be ignored */ 144f0b5e634SDaniel Mack static inline int 145f0b5e634SDaniel Mack check_ignored_ctl(const struct usbmix_name_map *p) 146f0b5e634SDaniel Mack { 147f0b5e634SDaniel Mack if (!p || p->name || p->dB) 148f0b5e634SDaniel Mack return 0; 149f0b5e634SDaniel Mack return 1; 150f0b5e634SDaniel Mack } 151f0b5e634SDaniel Mack 152f0b5e634SDaniel Mack /* dB mapping */ 153f0b5e634SDaniel Mack static inline void check_mapped_dB(const struct usbmix_name_map *p, 154f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval) 155f0b5e634SDaniel Mack { 156f0b5e634SDaniel Mack if (p && p->dB) { 157f0b5e634SDaniel Mack cval->dBmin = p->dB->min; 158f0b5e634SDaniel Mack cval->dBmax = p->dB->max; 15938b65190STakashi Iwai cval->initialized = 1; 160f0b5e634SDaniel Mack } 161f0b5e634SDaniel Mack } 162f0b5e634SDaniel Mack 163f0b5e634SDaniel Mack /* get the mapped selector source name */ 164f0b5e634SDaniel Mack static int check_mapped_selector_name(struct mixer_build *state, int unitid, 165f0b5e634SDaniel Mack int index, char *buf, int buflen) 166f0b5e634SDaniel Mack { 167f0b5e634SDaniel Mack const struct usbmix_selector_map *p; 168f0b5e634SDaniel Mack 169f0b5e634SDaniel Mack if (!state->selector_map) 170f0b5e634SDaniel Mack return 0; 171f0b5e634SDaniel Mack for (p = state->selector_map; p->id; p++) { 172f0b5e634SDaniel Mack if (p->id == unitid && index < p->count) 173f0b5e634SDaniel Mack return strlcpy(buf, p->names[index], buflen); 174f0b5e634SDaniel Mack } 175f0b5e634SDaniel Mack return 0; 176f0b5e634SDaniel Mack } 177f0b5e634SDaniel Mack 178f0b5e634SDaniel Mack /* 179f0b5e634SDaniel Mack * find an audio control unit with the given unit id 180f0b5e634SDaniel Mack */ 1816bc170e4SDaniel Mack static void *find_audio_control_unit(struct mixer_build *state, 1826bc170e4SDaniel Mack unsigned char unit) 183f0b5e634SDaniel Mack { 18467e1daa0SDaniel Mack /* we just parse the header */ 18567e1daa0SDaniel Mack struct uac_feature_unit_descriptor *hdr = NULL; 186f0b5e634SDaniel Mack 18767e1daa0SDaniel Mack while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr, 188f0b5e634SDaniel Mack USB_DT_CS_INTERFACE)) != NULL) { 18967e1daa0SDaniel Mack if (hdr->bLength >= 4 && 19067e1daa0SDaniel Mack hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && 19167e1daa0SDaniel Mack hdr->bDescriptorSubtype <= UAC2_SAMPLE_RATE_CONVERTER && 19267e1daa0SDaniel Mack hdr->bUnitID == unit) 19367e1daa0SDaniel Mack return hdr; 194f0b5e634SDaniel Mack } 19567e1daa0SDaniel Mack 196f0b5e634SDaniel Mack return NULL; 197f0b5e634SDaniel Mack } 198f0b5e634SDaniel Mack 199f0b5e634SDaniel Mack /* 200f0b5e634SDaniel Mack * copy a string with the given id 201f0b5e634SDaniel Mack */ 2026bc170e4SDaniel Mack static int snd_usb_copy_string_desc(struct mixer_build *state, 2036bc170e4SDaniel Mack int index, char *buf, int maxlen) 204f0b5e634SDaniel Mack { 205f0b5e634SDaniel Mack int len = usb_string(state->chip->dev, index, buf, maxlen - 1); 206f0b5e634SDaniel Mack buf[len] = 0; 207f0b5e634SDaniel Mack return len; 208f0b5e634SDaniel Mack } 209f0b5e634SDaniel Mack 210f0b5e634SDaniel Mack /* 211f0b5e634SDaniel Mack * convert from the byte/word on usb descriptor to the zero-based integer 212f0b5e634SDaniel Mack */ 213f0b5e634SDaniel Mack static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) 214f0b5e634SDaniel Mack { 215f0b5e634SDaniel Mack switch (cval->val_type) { 216f0b5e634SDaniel Mack case USB_MIXER_BOOLEAN: 217f0b5e634SDaniel Mack return !!val; 218f0b5e634SDaniel Mack case USB_MIXER_INV_BOOLEAN: 219f0b5e634SDaniel Mack return !val; 220f0b5e634SDaniel Mack case USB_MIXER_U8: 221f0b5e634SDaniel Mack val &= 0xff; 222f0b5e634SDaniel Mack break; 223f0b5e634SDaniel Mack case USB_MIXER_S8: 224f0b5e634SDaniel Mack val &= 0xff; 225f0b5e634SDaniel Mack if (val >= 0x80) 226f0b5e634SDaniel Mack val -= 0x100; 227f0b5e634SDaniel Mack break; 228f0b5e634SDaniel Mack case USB_MIXER_U16: 229f0b5e634SDaniel Mack val &= 0xffff; 230f0b5e634SDaniel Mack break; 231f0b5e634SDaniel Mack case USB_MIXER_S16: 232f0b5e634SDaniel Mack val &= 0xffff; 233f0b5e634SDaniel Mack if (val >= 0x8000) 234f0b5e634SDaniel Mack val -= 0x10000; 235f0b5e634SDaniel Mack break; 236f0b5e634SDaniel Mack } 237f0b5e634SDaniel Mack return val; 238f0b5e634SDaniel Mack } 239f0b5e634SDaniel Mack 240f0b5e634SDaniel Mack /* 241f0b5e634SDaniel Mack * convert from the zero-based int to the byte/word for usb descriptor 242f0b5e634SDaniel Mack */ 243f0b5e634SDaniel Mack static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) 244f0b5e634SDaniel Mack { 245f0b5e634SDaniel Mack switch (cval->val_type) { 246f0b5e634SDaniel Mack case USB_MIXER_BOOLEAN: 247f0b5e634SDaniel Mack return !!val; 248f0b5e634SDaniel Mack case USB_MIXER_INV_BOOLEAN: 249f0b5e634SDaniel Mack return !val; 250f0b5e634SDaniel Mack case USB_MIXER_S8: 251f0b5e634SDaniel Mack case USB_MIXER_U8: 252f0b5e634SDaniel Mack return val & 0xff; 253f0b5e634SDaniel Mack case USB_MIXER_S16: 254f0b5e634SDaniel Mack case USB_MIXER_U16: 255f0b5e634SDaniel Mack return val & 0xffff; 256f0b5e634SDaniel Mack } 257f0b5e634SDaniel Mack return 0; /* not reached */ 258f0b5e634SDaniel Mack } 259f0b5e634SDaniel Mack 260f0b5e634SDaniel Mack static int get_relative_value(struct usb_mixer_elem_info *cval, int val) 261f0b5e634SDaniel Mack { 262f0b5e634SDaniel Mack if (!cval->res) 263f0b5e634SDaniel Mack cval->res = 1; 264f0b5e634SDaniel Mack if (val < cval->min) 265f0b5e634SDaniel Mack return 0; 266f0b5e634SDaniel Mack else if (val >= cval->max) 267f0b5e634SDaniel Mack return (cval->max - cval->min + cval->res - 1) / cval->res; 268f0b5e634SDaniel Mack else 269f0b5e634SDaniel Mack return (val - cval->min) / cval->res; 270f0b5e634SDaniel Mack } 271f0b5e634SDaniel Mack 272f0b5e634SDaniel Mack static int get_abs_value(struct usb_mixer_elem_info *cval, int val) 273f0b5e634SDaniel Mack { 274f0b5e634SDaniel Mack if (val < 0) 275f0b5e634SDaniel Mack return cval->min; 276f0b5e634SDaniel Mack if (!cval->res) 277f0b5e634SDaniel Mack cval->res = 1; 278f0b5e634SDaniel Mack val *= cval->res; 279f0b5e634SDaniel Mack val += cval->min; 280f0b5e634SDaniel Mack if (val > cval->max) 281f0b5e634SDaniel Mack return cval->max; 282f0b5e634SDaniel Mack return val; 283f0b5e634SDaniel Mack } 284f0b5e634SDaniel Mack 285bc18e31cSJulian Scheel static int uac2_ctl_value_size(int val_type) 286bc18e31cSJulian Scheel { 287bc18e31cSJulian Scheel switch (val_type) { 288bc18e31cSJulian Scheel case USB_MIXER_S32: 289bc18e31cSJulian Scheel case USB_MIXER_U32: 290bc18e31cSJulian Scheel return 4; 291bc18e31cSJulian Scheel case USB_MIXER_S16: 292bc18e31cSJulian Scheel case USB_MIXER_U16: 293bc18e31cSJulian Scheel return 2; 294bc18e31cSJulian Scheel default: 295bc18e31cSJulian Scheel return 1; 296bc18e31cSJulian Scheel } 297bc18e31cSJulian Scheel return 0; /* unreachable */ 298bc18e31cSJulian Scheel } 299bc18e31cSJulian Scheel 300f0b5e634SDaniel Mack 301f0b5e634SDaniel Mack /* 302f0b5e634SDaniel Mack * retrieve a mixer value 303f0b5e634SDaniel Mack */ 304f0b5e634SDaniel Mack 3056bc170e4SDaniel Mack static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, 3066bc170e4SDaniel Mack int validx, int *value_ret) 307f0b5e634SDaniel Mack { 3083360b84bSTakashi Iwai struct snd_usb_audio *chip = cval->head.mixer->chip; 309f0b5e634SDaniel Mack unsigned char buf[2]; 310f0b5e634SDaniel Mack int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 311f0b5e634SDaniel Mack int timeout = 10; 312978520b7STakashi Iwai int idx = 0, err; 313f0b5e634SDaniel Mack 31447ab1545STakashi Iwai err = snd_usb_lock_shutdown(chip); 31588a8516aSOliver Neukum if (err < 0) 31688a8516aSOliver Neukum return -EIO; 3176bc170e4SDaniel Mack 318f0b5e634SDaniel Mack while (timeout-- > 0) { 3193360b84bSTakashi Iwai idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8); 3203d8d4dcfSDaniel Mack if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, 321f0b5e634SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 322978520b7STakashi Iwai validx, idx, buf, val_len) >= val_len) { 323f0b5e634SDaniel Mack *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); 324978520b7STakashi Iwai err = 0; 325978520b7STakashi Iwai goto out; 326f0b5e634SDaniel Mack } 327f0b5e634SDaniel Mack } 3280ba41d91STakashi Iwai usb_audio_dbg(chip, 3290ba41d91STakashi Iwai "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 330978520b7STakashi Iwai request, validx, idx, cval->val_type); 331978520b7STakashi Iwai err = -EINVAL; 332978520b7STakashi Iwai 333978520b7STakashi Iwai out: 33447ab1545STakashi Iwai snd_usb_unlock_shutdown(chip); 335978520b7STakashi Iwai return err; 336f0b5e634SDaniel Mack } 337f0b5e634SDaniel Mack 3386bc170e4SDaniel Mack static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, 3396bc170e4SDaniel Mack int validx, int *value_ret) 34023caaf19SDaniel Mack { 3413360b84bSTakashi Iwai struct snd_usb_audio *chip = cval->head.mixer->chip; 342bc18e31cSJulian Scheel unsigned char buf[4 + 3 * sizeof(__u32)]; /* enough space for one range */ 34323caaf19SDaniel Mack unsigned char *val; 344978520b7STakashi Iwai int idx = 0, ret, size; 34523caaf19SDaniel Mack __u8 bRequest; 34623caaf19SDaniel Mack 347e8bdb6bbSDaniel Mack if (request == UAC_GET_CUR) { 348e8bdb6bbSDaniel Mack bRequest = UAC2_CS_CUR; 349bc18e31cSJulian Scheel size = uac2_ctl_value_size(cval->val_type); 350e8bdb6bbSDaniel Mack } else { 351e8bdb6bbSDaniel Mack bRequest = UAC2_CS_RANGE; 352e8bdb6bbSDaniel Mack size = sizeof(buf); 353e8bdb6bbSDaniel Mack } 354e8bdb6bbSDaniel Mack 355e8bdb6bbSDaniel Mack memset(buf, 0, sizeof(buf)); 35623caaf19SDaniel Mack 35747ab1545STakashi Iwai ret = snd_usb_lock_shutdown(chip) ? -EIO : 0; 35888a8516aSOliver Neukum if (ret) 35988a8516aSOliver Neukum goto error; 36088a8516aSOliver Neukum 3613360b84bSTakashi Iwai idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8); 3623d8d4dcfSDaniel Mack ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest, 36323caaf19SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 364978520b7STakashi Iwai validx, idx, buf, size); 36547ab1545STakashi Iwai snd_usb_unlock_shutdown(chip); 36623caaf19SDaniel Mack 36723caaf19SDaniel Mack if (ret < 0) { 36888a8516aSOliver Neukum error: 3690ba41d91STakashi Iwai usb_audio_err(chip, 3700ba41d91STakashi Iwai "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 371978520b7STakashi Iwai request, validx, idx, cval->val_type); 37223caaf19SDaniel Mack return ret; 37323caaf19SDaniel Mack } 37423caaf19SDaniel Mack 375e8bdb6bbSDaniel Mack /* FIXME: how should we handle multiple triplets here? */ 376e8bdb6bbSDaniel Mack 37723caaf19SDaniel Mack switch (request) { 37823caaf19SDaniel Mack case UAC_GET_CUR: 37923caaf19SDaniel Mack val = buf; 38023caaf19SDaniel Mack break; 38123caaf19SDaniel Mack case UAC_GET_MIN: 38223caaf19SDaniel Mack val = buf + sizeof(__u16); 38323caaf19SDaniel Mack break; 38423caaf19SDaniel Mack case UAC_GET_MAX: 38523caaf19SDaniel Mack val = buf + sizeof(__u16) * 2; 38623caaf19SDaniel Mack break; 38723caaf19SDaniel Mack case UAC_GET_RES: 38823caaf19SDaniel Mack val = buf + sizeof(__u16) * 3; 38923caaf19SDaniel Mack break; 39023caaf19SDaniel Mack default: 39123caaf19SDaniel Mack return -EINVAL; 39223caaf19SDaniel Mack } 39323caaf19SDaniel Mack 39423caaf19SDaniel Mack *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16))); 39523caaf19SDaniel Mack 39623caaf19SDaniel Mack return 0; 39723caaf19SDaniel Mack } 39823caaf19SDaniel Mack 3996bc170e4SDaniel Mack static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, 4006bc170e4SDaniel Mack int validx, int *value_ret) 40123caaf19SDaniel Mack { 4029f814105SEldad Zack validx += cval->idx_off; 4039f814105SEldad Zack 4043360b84bSTakashi Iwai return (cval->head.mixer->protocol == UAC_VERSION_1) ? 40523caaf19SDaniel Mack get_ctl_value_v1(cval, request, validx, value_ret) : 40623caaf19SDaniel Mack get_ctl_value_v2(cval, request, validx, value_ret); 40723caaf19SDaniel Mack } 40823caaf19SDaniel Mack 4096bc170e4SDaniel Mack static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, 4106bc170e4SDaniel Mack int validx, int *value) 411f0b5e634SDaniel Mack { 412f0b5e634SDaniel Mack return get_ctl_value(cval, UAC_GET_CUR, validx, value); 413f0b5e634SDaniel Mack } 414f0b5e634SDaniel Mack 415f0b5e634SDaniel Mack /* channel = 0: master, 1 = first channel */ 416f0b5e634SDaniel Mack static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, 417f0b5e634SDaniel Mack int channel, int *value) 418f0b5e634SDaniel Mack { 4196bc170e4SDaniel Mack return get_ctl_value(cval, UAC_GET_CUR, 4206bc170e4SDaniel Mack (cval->control << 8) | channel, 4216bc170e4SDaniel Mack value); 422f0b5e634SDaniel Mack } 423f0b5e634SDaniel Mack 424eef90451SChris J Arges int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, 425f0b5e634SDaniel Mack int channel, int index, int *value) 426f0b5e634SDaniel Mack { 427f0b5e634SDaniel Mack int err; 428f0b5e634SDaniel Mack 429f0b5e634SDaniel Mack if (cval->cached & (1 << channel)) { 430f0b5e634SDaniel Mack *value = cval->cache_val[index]; 431f0b5e634SDaniel Mack return 0; 432f0b5e634SDaniel Mack } 433f0b5e634SDaniel Mack err = get_cur_mix_raw(cval, channel, value); 434f0b5e634SDaniel Mack if (err < 0) { 4353360b84bSTakashi Iwai if (!cval->head.mixer->ignore_ctl_error) 4363360b84bSTakashi Iwai usb_audio_dbg(cval->head.mixer->chip, 4370ba41d91STakashi Iwai "cannot get current value for control %d ch %d: err = %d\n", 438f0b5e634SDaniel Mack cval->control, channel, err); 439f0b5e634SDaniel Mack return err; 440f0b5e634SDaniel Mack } 441f0b5e634SDaniel Mack cval->cached |= 1 << channel; 442f0b5e634SDaniel Mack cval->cache_val[index] = *value; 443f0b5e634SDaniel Mack return 0; 444f0b5e634SDaniel Mack } 445f0b5e634SDaniel Mack 446f0b5e634SDaniel Mack /* 447f0b5e634SDaniel Mack * set a mixer value 448f0b5e634SDaniel Mack */ 449f0b5e634SDaniel Mack 450f0b5e634SDaniel Mack int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 451f0b5e634SDaniel Mack int request, int validx, int value_set) 452f0b5e634SDaniel Mack { 4533360b84bSTakashi Iwai struct snd_usb_audio *chip = cval->head.mixer->chip; 454bc18e31cSJulian Scheel unsigned char buf[4]; 455978520b7STakashi Iwai int idx = 0, val_len, err, timeout = 10; 45623caaf19SDaniel Mack 4579f814105SEldad Zack validx += cval->idx_off; 4589f814105SEldad Zack 4593360b84bSTakashi Iwai if (cval->head.mixer->protocol == UAC_VERSION_1) { 46023caaf19SDaniel Mack val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 46123caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 462bc18e31cSJulian Scheel val_len = uac2_ctl_value_size(cval->val_type); 46323caaf19SDaniel Mack 46423caaf19SDaniel Mack /* FIXME */ 46523caaf19SDaniel Mack if (request != UAC_SET_CUR) { 4660ba41d91STakashi Iwai usb_audio_dbg(chip, "RANGE setting not yet supported\n"); 46723caaf19SDaniel Mack return -EINVAL; 46823caaf19SDaniel Mack } 46923caaf19SDaniel Mack 47023caaf19SDaniel Mack request = UAC2_CS_CUR; 47123caaf19SDaniel Mack } 472f0b5e634SDaniel Mack 473f0b5e634SDaniel Mack value_set = convert_bytes_value(cval, value_set); 474f0b5e634SDaniel Mack buf[0] = value_set & 0xff; 475f0b5e634SDaniel Mack buf[1] = (value_set >> 8) & 0xff; 476bc18e31cSJulian Scheel buf[2] = (value_set >> 16) & 0xff; 477bc18e31cSJulian Scheel buf[3] = (value_set >> 24) & 0xff; 47847ab1545STakashi Iwai 47947ab1545STakashi Iwai err = snd_usb_lock_shutdown(chip); 48088a8516aSOliver Neukum if (err < 0) 48188a8516aSOliver Neukum return -EIO; 48247ab1545STakashi Iwai 483978520b7STakashi Iwai while (timeout-- > 0) { 4843360b84bSTakashi Iwai idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8); 4853d8d4dcfSDaniel Mack if (snd_usb_ctl_msg(chip->dev, 4863d8d4dcfSDaniel Mack usb_sndctrlpipe(chip->dev, 0), request, 487f0b5e634SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, 488978520b7STakashi Iwai validx, idx, buf, val_len) >= 0) { 489978520b7STakashi Iwai err = 0; 490978520b7STakashi Iwai goto out; 49188a8516aSOliver Neukum } 492978520b7STakashi Iwai } 4930ba41d91STakashi Iwai usb_audio_dbg(chip, "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", 494978520b7STakashi Iwai request, validx, idx, cval->val_type, buf[0], buf[1]); 495978520b7STakashi Iwai err = -EINVAL; 496978520b7STakashi Iwai 497978520b7STakashi Iwai out: 49847ab1545STakashi Iwai snd_usb_unlock_shutdown(chip); 499978520b7STakashi Iwai return err; 500f0b5e634SDaniel Mack } 501f0b5e634SDaniel Mack 5026bc170e4SDaniel Mack static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, 5036bc170e4SDaniel Mack int validx, int value) 504f0b5e634SDaniel Mack { 505f0b5e634SDaniel Mack return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value); 506f0b5e634SDaniel Mack } 507f0b5e634SDaniel Mack 508eef90451SChris J Arges int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, 509f0b5e634SDaniel Mack int index, int value) 510f0b5e634SDaniel Mack { 511f0b5e634SDaniel Mack int err; 512a6a33259SDaniel Mack unsigned int read_only = (channel == 0) ? 513a6a33259SDaniel Mack cval->master_readonly : 514a6a33259SDaniel Mack cval->ch_readonly & (1 << (channel - 1)); 515a6a33259SDaniel Mack 516a6a33259SDaniel Mack if (read_only) { 5173360b84bSTakashi Iwai usb_audio_dbg(cval->head.mixer->chip, 5180ba41d91STakashi Iwai "%s(): channel %d of control %d is read_only\n", 519a6a33259SDaniel Mack __func__, channel, cval->control); 520a6a33259SDaniel Mack return 0; 521a6a33259SDaniel Mack } 522a6a33259SDaniel Mack 5236bc170e4SDaniel Mack err = snd_usb_mixer_set_ctl_value(cval, 5246bc170e4SDaniel Mack UAC_SET_CUR, (cval->control << 8) | channel, 525f0b5e634SDaniel Mack value); 526f0b5e634SDaniel Mack if (err < 0) 527f0b5e634SDaniel Mack return err; 528f0b5e634SDaniel Mack cval->cached |= 1 << channel; 529f0b5e634SDaniel Mack cval->cache_val[index] = value; 530f0b5e634SDaniel Mack return 0; 531f0b5e634SDaniel Mack } 532f0b5e634SDaniel Mack 533f0b5e634SDaniel Mack /* 534f0b5e634SDaniel Mack * TLV callback for mixer volume controls 535f0b5e634SDaniel Mack */ 536285de9c0SFelix Homann int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 537f0b5e634SDaniel Mack unsigned int size, unsigned int __user *_tlv) 538f0b5e634SDaniel Mack { 539f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 540f0b5e634SDaniel Mack DECLARE_TLV_DB_MINMAX(scale, 0, 0); 541f0b5e634SDaniel Mack 542f0b5e634SDaniel Mack if (size < sizeof(scale)) 543f0b5e634SDaniel Mack return -ENOMEM; 544f0b5e634SDaniel Mack scale[2] = cval->dBmin; 545f0b5e634SDaniel Mack scale[3] = cval->dBmax; 546f0b5e634SDaniel Mack if (copy_to_user(_tlv, scale, sizeof(scale))) 547f0b5e634SDaniel Mack return -EFAULT; 548f0b5e634SDaniel Mack return 0; 549f0b5e634SDaniel Mack } 550f0b5e634SDaniel Mack 551f0b5e634SDaniel Mack /* 552f0b5e634SDaniel Mack * parser routines begin here... 553f0b5e634SDaniel Mack */ 554f0b5e634SDaniel Mack 555f0b5e634SDaniel Mack static int parse_audio_unit(struct mixer_build *state, int unitid); 556f0b5e634SDaniel Mack 557f0b5e634SDaniel Mack 558f0b5e634SDaniel Mack /* 559f0b5e634SDaniel Mack * check if the input/output channel routing is enabled on the given bitmap. 560f0b5e634SDaniel Mack * used for mixer unit parser 561f0b5e634SDaniel Mack */ 5626bc170e4SDaniel Mack static int check_matrix_bitmap(unsigned char *bmap, 5636bc170e4SDaniel Mack int ich, int och, int num_outs) 564f0b5e634SDaniel Mack { 565f0b5e634SDaniel Mack int idx = ich * num_outs + och; 566f0b5e634SDaniel Mack return bmap[idx >> 3] & (0x80 >> (idx & 7)); 567f0b5e634SDaniel Mack } 568f0b5e634SDaniel Mack 569f0b5e634SDaniel Mack /* 570f0b5e634SDaniel Mack * add an alsa control element 571f0b5e634SDaniel Mack * search and increment the index until an empty slot is found. 572f0b5e634SDaniel Mack * 573f0b5e634SDaniel Mack * if failed, give up and free the control instance. 574f0b5e634SDaniel Mack */ 575f0b5e634SDaniel Mack 5763360b84bSTakashi Iwai int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list, 577ef9d5970SDaniel Mack struct snd_kcontrol *kctl) 578f0b5e634SDaniel Mack { 5793360b84bSTakashi Iwai struct usb_mixer_interface *mixer = list->mixer; 580f0b5e634SDaniel Mack int err; 581f0b5e634SDaniel Mack 582ef9d5970SDaniel Mack while (snd_ctl_find_id(mixer->chip->card, &kctl->id)) 583f0b5e634SDaniel Mack kctl->id.index++; 584ef9d5970SDaniel Mack if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) { 5856bc170e4SDaniel Mack usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n", 5866bc170e4SDaniel Mack err); 587f0b5e634SDaniel Mack return err; 588f0b5e634SDaniel Mack } 5893360b84bSTakashi Iwai list->kctl = kctl; 5903360b84bSTakashi Iwai list->next_id_elem = mixer->id_elems[list->id]; 5913360b84bSTakashi Iwai mixer->id_elems[list->id] = list; 592f0b5e634SDaniel Mack return 0; 593f0b5e634SDaniel Mack } 594f0b5e634SDaniel Mack 595f0b5e634SDaniel Mack /* 596f0b5e634SDaniel Mack * get a terminal name string 597f0b5e634SDaniel Mack */ 598f0b5e634SDaniel Mack 599f0b5e634SDaniel Mack static struct iterm_name_combo { 600f0b5e634SDaniel Mack int type; 601f0b5e634SDaniel Mack char *name; 602f0b5e634SDaniel Mack } iterm_names[] = { 603f0b5e634SDaniel Mack { 0x0300, "Output" }, 604f0b5e634SDaniel Mack { 0x0301, "Speaker" }, 605f0b5e634SDaniel Mack { 0x0302, "Headphone" }, 606f0b5e634SDaniel Mack { 0x0303, "HMD Audio" }, 607f0b5e634SDaniel Mack { 0x0304, "Desktop Speaker" }, 608f0b5e634SDaniel Mack { 0x0305, "Room Speaker" }, 609f0b5e634SDaniel Mack { 0x0306, "Com Speaker" }, 610f0b5e634SDaniel Mack { 0x0307, "LFE" }, 611f0b5e634SDaniel Mack { 0x0600, "External In" }, 612f0b5e634SDaniel Mack { 0x0601, "Analog In" }, 613f0b5e634SDaniel Mack { 0x0602, "Digital In" }, 614f0b5e634SDaniel Mack { 0x0603, "Line" }, 615f0b5e634SDaniel Mack { 0x0604, "Legacy In" }, 616f0b5e634SDaniel Mack { 0x0605, "IEC958 In" }, 617f0b5e634SDaniel Mack { 0x0606, "1394 DA Stream" }, 618f0b5e634SDaniel Mack { 0x0607, "1394 DV Stream" }, 619f0b5e634SDaniel Mack { 0x0700, "Embedded" }, 620f0b5e634SDaniel Mack { 0x0701, "Noise Source" }, 621f0b5e634SDaniel Mack { 0x0702, "Equalization Noise" }, 622f0b5e634SDaniel Mack { 0x0703, "CD" }, 623f0b5e634SDaniel Mack { 0x0704, "DAT" }, 624f0b5e634SDaniel Mack { 0x0705, "DCC" }, 625f0b5e634SDaniel Mack { 0x0706, "MiniDisk" }, 626f0b5e634SDaniel Mack { 0x0707, "Analog Tape" }, 627f0b5e634SDaniel Mack { 0x0708, "Phonograph" }, 628f0b5e634SDaniel Mack { 0x0709, "VCR Audio" }, 629f0b5e634SDaniel Mack { 0x070a, "Video Disk Audio" }, 630f0b5e634SDaniel Mack { 0x070b, "DVD Audio" }, 631f0b5e634SDaniel Mack { 0x070c, "TV Tuner Audio" }, 632f0b5e634SDaniel Mack { 0x070d, "Satellite Rec Audio" }, 633f0b5e634SDaniel Mack { 0x070e, "Cable Tuner Audio" }, 634f0b5e634SDaniel Mack { 0x070f, "DSS Audio" }, 635f0b5e634SDaniel Mack { 0x0710, "Radio Receiver" }, 636f0b5e634SDaniel Mack { 0x0711, "Radio Transmitter" }, 637f0b5e634SDaniel Mack { 0x0712, "Multi-Track Recorder" }, 638f0b5e634SDaniel Mack { 0x0713, "Synthesizer" }, 639f0b5e634SDaniel Mack { 0 }, 640f0b5e634SDaniel Mack }; 641f0b5e634SDaniel Mack 642f0b5e634SDaniel Mack static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, 643f0b5e634SDaniel Mack unsigned char *name, int maxlen, int term_only) 644f0b5e634SDaniel Mack { 645f0b5e634SDaniel Mack struct iterm_name_combo *names; 646f0b5e634SDaniel Mack 647f0b5e634SDaniel Mack if (iterm->name) 6486bc170e4SDaniel Mack return snd_usb_copy_string_desc(state, iterm->name, 6496bc170e4SDaniel Mack name, maxlen); 650f0b5e634SDaniel Mack 651f0b5e634SDaniel Mack /* virtual type - not a real terminal */ 652f0b5e634SDaniel Mack if (iterm->type >> 16) { 653f0b5e634SDaniel Mack if (term_only) 654f0b5e634SDaniel Mack return 0; 655f0b5e634SDaniel Mack switch (iterm->type >> 16) { 656f0b5e634SDaniel Mack case UAC_SELECTOR_UNIT: 6576bc170e4SDaniel Mack strcpy(name, "Selector"); 6586bc170e4SDaniel Mack return 8; 65969da9bcbSDaniel Mack case UAC1_PROCESSING_UNIT: 6606bc170e4SDaniel Mack strcpy(name, "Process Unit"); 6616bc170e4SDaniel Mack return 12; 66269da9bcbSDaniel Mack case UAC1_EXTENSION_UNIT: 6636bc170e4SDaniel Mack strcpy(name, "Ext Unit"); 6646bc170e4SDaniel Mack return 8; 665f0b5e634SDaniel Mack case UAC_MIXER_UNIT: 6666bc170e4SDaniel Mack strcpy(name, "Mixer"); 6676bc170e4SDaniel Mack return 5; 668f0b5e634SDaniel Mack default: 669f0b5e634SDaniel Mack return sprintf(name, "Unit %d", iterm->id); 670f0b5e634SDaniel Mack } 671f0b5e634SDaniel Mack } 672f0b5e634SDaniel Mack 673f0b5e634SDaniel Mack switch (iterm->type & 0xff00) { 674f0b5e634SDaniel Mack case 0x0100: 6756bc170e4SDaniel Mack strcpy(name, "PCM"); 6766bc170e4SDaniel Mack return 3; 677f0b5e634SDaniel Mack case 0x0200: 6786bc170e4SDaniel Mack strcpy(name, "Mic"); 6796bc170e4SDaniel Mack return 3; 680f0b5e634SDaniel Mack case 0x0400: 6816bc170e4SDaniel Mack strcpy(name, "Headset"); 6826bc170e4SDaniel Mack return 7; 683f0b5e634SDaniel Mack case 0x0500: 6846bc170e4SDaniel Mack strcpy(name, "Phone"); 6856bc170e4SDaniel Mack return 5; 686f0b5e634SDaniel Mack } 687f0b5e634SDaniel Mack 6886bc170e4SDaniel Mack for (names = iterm_names; names->type; names++) { 689f0b5e634SDaniel Mack if (names->type == iterm->type) { 690f0b5e634SDaniel Mack strcpy(name, names->name); 691f0b5e634SDaniel Mack return strlen(names->name); 692f0b5e634SDaniel Mack } 693f0b5e634SDaniel Mack } 694f0b5e634SDaniel Mack 6956bc170e4SDaniel Mack return 0; 6966bc170e4SDaniel Mack } 697f0b5e634SDaniel Mack 698f0b5e634SDaniel Mack /* 699f0b5e634SDaniel Mack * parse the source unit recursively until it reaches to a terminal 700f0b5e634SDaniel Mack * or a branched unit. 701f0b5e634SDaniel Mack */ 7026bc170e4SDaniel Mack static int check_input_term(struct mixer_build *state, int id, 7036bc170e4SDaniel Mack struct usb_audio_term *term) 704f0b5e634SDaniel Mack { 70509414207SDaniel Mack int err; 70623caaf19SDaniel Mack void *p1; 707f0b5e634SDaniel Mack 708f0b5e634SDaniel Mack memset(term, 0, sizeof(*term)); 709f0b5e634SDaniel Mack while ((p1 = find_audio_control_unit(state, id)) != NULL) { 71023caaf19SDaniel Mack unsigned char *hdr = p1; 711f0b5e634SDaniel Mack term->id = id; 71223caaf19SDaniel Mack switch (hdr[2]) { 713f0b5e634SDaniel Mack case UAC_INPUT_TERMINAL: 71423caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 71523caaf19SDaniel Mack struct uac_input_terminal_descriptor *d = p1; 71623caaf19SDaniel Mack term->type = le16_to_cpu(d->wTerminalType); 71723caaf19SDaniel Mack term->channels = d->bNrChannels; 71823caaf19SDaniel Mack term->chconfig = le16_to_cpu(d->wChannelConfig); 71923caaf19SDaniel Mack term->name = d->iTerminal; 72023caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 72123caaf19SDaniel Mack struct uac2_input_terminal_descriptor *d = p1; 7229430e547SJulian Scheel 7239430e547SJulian Scheel /* call recursively to verify that the 7249430e547SJulian Scheel * referenced clock entity is valid */ 7259430e547SJulian Scheel err = check_input_term(state, d->bCSourceID, term); 7269430e547SJulian Scheel if (err < 0) 7279430e547SJulian Scheel return err; 7289430e547SJulian Scheel 7299430e547SJulian Scheel /* save input term properties after recursion, 7309430e547SJulian Scheel * to ensure they are not overriden by the 7319430e547SJulian Scheel * recursion calls */ 7329430e547SJulian Scheel term->id = id; 73323caaf19SDaniel Mack term->type = le16_to_cpu(d->wTerminalType); 73423caaf19SDaniel Mack term->channels = d->bNrChannels; 73523caaf19SDaniel Mack term->chconfig = le32_to_cpu(d->bmChannelConfig); 73623caaf19SDaniel Mack term->name = d->iTerminal; 73723caaf19SDaniel Mack } 738f0b5e634SDaniel Mack return 0; 73923caaf19SDaniel Mack case UAC_FEATURE_UNIT: { 74023caaf19SDaniel Mack /* the header is the same for v1 and v2 */ 74123caaf19SDaniel Mack struct uac_feature_unit_descriptor *d = p1; 7425e688883SDaniel Mack id = d->bSourceID; 743f0b5e634SDaniel Mack break; /* continue to parse */ 744f0b5e634SDaniel Mack } 74523caaf19SDaniel Mack case UAC_MIXER_UNIT: { 74623caaf19SDaniel Mack struct uac_mixer_unit_descriptor *d = p1; 74723caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 74823caaf19SDaniel Mack term->channels = uac_mixer_unit_bNrChannels(d); 74923caaf19SDaniel Mack term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol); 75023caaf19SDaniel Mack term->name = uac_mixer_unit_iMixer(d); 751f0b5e634SDaniel Mack return 0; 75223caaf19SDaniel Mack } 75309414207SDaniel Mack case UAC_SELECTOR_UNIT: 75409414207SDaniel Mack case UAC2_CLOCK_SELECTOR: { 75523caaf19SDaniel Mack struct uac_selector_unit_descriptor *d = p1; 75623caaf19SDaniel Mack /* call recursively to retrieve the channel info */ 7574d7b86c9SDaniel Mack err = check_input_term(state, d->baSourceID[0], term); 7584d7b86c9SDaniel Mack if (err < 0) 7594d7b86c9SDaniel Mack return err; 76023caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 76123caaf19SDaniel Mack term->id = id; 76223caaf19SDaniel Mack term->name = uac_selector_unit_iSelector(d); 76323caaf19SDaniel Mack return 0; 76423caaf19SDaniel Mack } 76569da9bcbSDaniel Mack case UAC1_PROCESSING_UNIT: 7665dae5fd2SEldad Zack case UAC1_EXTENSION_UNIT: 7675dae5fd2SEldad Zack /* UAC2_PROCESSING_UNIT_V2 */ 76861ac5130STorstein Hegge /* UAC2_EFFECT_UNIT */ 76961ac5130STorstein Hegge case UAC2_EXTENSION_UNIT_V2: { 77023caaf19SDaniel Mack struct uac_processing_unit_descriptor *d = p1; 7715dae5fd2SEldad Zack 7725dae5fd2SEldad Zack if (state->mixer->protocol == UAC_VERSION_2 && 7735dae5fd2SEldad Zack hdr[2] == UAC2_EFFECT_UNIT) { 7745dae5fd2SEldad Zack /* UAC2/UAC1 unit IDs overlap here in an 7755dae5fd2SEldad Zack * uncompatible way. Ignore this unit for now. 7765dae5fd2SEldad Zack */ 7775dae5fd2SEldad Zack return 0; 7785dae5fd2SEldad Zack } 7795dae5fd2SEldad Zack 78023caaf19SDaniel Mack if (d->bNrInPins) { 78123caaf19SDaniel Mack id = d->baSourceID[0]; 78223caaf19SDaniel Mack break; /* continue to parse */ 78323caaf19SDaniel Mack } 78423caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 78523caaf19SDaniel Mack term->channels = uac_processing_unit_bNrChannels(d); 78623caaf19SDaniel Mack term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol); 78723caaf19SDaniel Mack term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol); 78823caaf19SDaniel Mack return 0; 78923caaf19SDaniel Mack } 79009414207SDaniel Mack case UAC2_CLOCK_SOURCE: { 79109414207SDaniel Mack struct uac_clock_source_descriptor *d = p1; 79209414207SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 79309414207SDaniel Mack term->id = id; 79409414207SDaniel Mack term->name = d->iClockSource; 79509414207SDaniel Mack return 0; 79609414207SDaniel Mack } 797f0b5e634SDaniel Mack default: 798f0b5e634SDaniel Mack return -ENODEV; 799f0b5e634SDaniel Mack } 800f0b5e634SDaniel Mack } 801f0b5e634SDaniel Mack return -ENODEV; 802f0b5e634SDaniel Mack } 803f0b5e634SDaniel Mack 804f0b5e634SDaniel Mack /* 805f0b5e634SDaniel Mack * Feature Unit 806f0b5e634SDaniel Mack */ 807f0b5e634SDaniel Mack 808f0b5e634SDaniel Mack /* feature unit control information */ 809f0b5e634SDaniel Mack struct usb_feature_control_info { 810f0b5e634SDaniel Mack const char *name; 811bc18e31cSJulian Scheel int type; /* data type for uac1 */ 812bc18e31cSJulian Scheel int type_uac2; /* data type for uac2 if different from uac1, else -1 */ 813f0b5e634SDaniel Mack }; 814f0b5e634SDaniel Mack 815f0b5e634SDaniel Mack static struct usb_feature_control_info audio_feature_info[] = { 816bc18e31cSJulian Scheel { "Mute", USB_MIXER_INV_BOOLEAN, -1 }, 817bc18e31cSJulian Scheel { "Volume", USB_MIXER_S16, -1 }, 818bc18e31cSJulian Scheel { "Tone Control - Bass", USB_MIXER_S8, -1 }, 819bc18e31cSJulian Scheel { "Tone Control - Mid", USB_MIXER_S8, -1 }, 820bc18e31cSJulian Scheel { "Tone Control - Treble", USB_MIXER_S8, -1 }, 821bc18e31cSJulian Scheel { "Graphic Equalizer", USB_MIXER_S8, -1 }, /* FIXME: not implemeted yet */ 822bc18e31cSJulian Scheel { "Auto Gain Control", USB_MIXER_BOOLEAN, -1 }, 823bc18e31cSJulian Scheel { "Delay Control", USB_MIXER_U16, USB_MIXER_U32 }, 824bc18e31cSJulian Scheel { "Bass Boost", USB_MIXER_BOOLEAN, -1 }, 825bc18e31cSJulian Scheel { "Loudness", USB_MIXER_BOOLEAN, -1 }, 8262e0281d1SDaniel Mack /* UAC2 specific */ 827bc18e31cSJulian Scheel { "Input Gain Control", USB_MIXER_S16, -1 }, 828bc18e31cSJulian Scheel { "Input Gain Pad Control", USB_MIXER_S16, -1 }, 829bc18e31cSJulian Scheel { "Phase Inverter Control", USB_MIXER_BOOLEAN, -1 }, 830f0b5e634SDaniel Mack }; 831f0b5e634SDaniel Mack 832f0b5e634SDaniel Mack /* private_free callback */ 833eef90451SChris J Arges void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl) 834f0b5e634SDaniel Mack { 835f0b5e634SDaniel Mack kfree(kctl->private_data); 836f0b5e634SDaniel Mack kctl->private_data = NULL; 837f0b5e634SDaniel Mack } 838f0b5e634SDaniel Mack 839f0b5e634SDaniel Mack /* 840f0b5e634SDaniel Mack * interface to ALSA control for feature/mixer units 841f0b5e634SDaniel Mack */ 842f0b5e634SDaniel Mack 843dcaaf9f2STakashi Iwai /* volume control quirks */ 844dcaaf9f2STakashi Iwai static void volume_control_quirks(struct usb_mixer_elem_info *cval, 845dcaaf9f2STakashi Iwai struct snd_kcontrol *kctl) 846dcaaf9f2STakashi Iwai { 8473360b84bSTakashi Iwai struct snd_usb_audio *chip = cval->head.mixer->chip; 8480ba41d91STakashi Iwai switch (chip->usb_id) { 849d50ed624SEldad Zack case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ 850e9a25e04SMatt Gruskin case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ 851d50ed624SEldad Zack if (strcmp(kctl->id.name, "Effect Duration") == 0) { 852d50ed624SEldad Zack cval->min = 0x0000; 853d50ed624SEldad Zack cval->max = 0xffff; 854d50ed624SEldad Zack cval->res = 0x00e6; 855d50ed624SEldad Zack break; 856d50ed624SEldad Zack } 857d50ed624SEldad Zack if (strcmp(kctl->id.name, "Effect Volume") == 0 || 858d50ed624SEldad Zack strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { 859d50ed624SEldad Zack cval->min = 0x00; 860d50ed624SEldad Zack cval->max = 0xff; 861d50ed624SEldad Zack break; 862d50ed624SEldad Zack } 863d50ed624SEldad Zack if (strstr(kctl->id.name, "Effect Return") != NULL) { 864d50ed624SEldad Zack cval->min = 0xb706; 865d50ed624SEldad Zack cval->max = 0xff7b; 866d50ed624SEldad Zack cval->res = 0x0073; 867d50ed624SEldad Zack break; 868d50ed624SEldad Zack } 869d50ed624SEldad Zack if ((strstr(kctl->id.name, "Playback Volume") != NULL) || 870d50ed624SEldad Zack (strstr(kctl->id.name, "Effect Send") != NULL)) { 871d50ed624SEldad Zack cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ 872d50ed624SEldad Zack cval->max = 0xfcfe; 873d50ed624SEldad Zack cval->res = 0x0073; 874d50ed624SEldad Zack } 875d50ed624SEldad Zack break; 876d50ed624SEldad Zack 877d34bf148SFelix Homann case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ 878d34bf148SFelix Homann case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ 879d34bf148SFelix Homann if (strcmp(kctl->id.name, "Effect Duration") == 0) { 8800ba41d91STakashi Iwai usb_audio_info(chip, 8810ba41d91STakashi Iwai "set quirk for FTU Effect Duration\n"); 882d34bf148SFelix Homann cval->min = 0x0000; 883d34bf148SFelix Homann cval->max = 0x7f00; 884d34bf148SFelix Homann cval->res = 0x0100; 885d34bf148SFelix Homann break; 886d34bf148SFelix Homann } 887d34bf148SFelix Homann if (strcmp(kctl->id.name, "Effect Volume") == 0 || 888d34bf148SFelix Homann strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { 8890ba41d91STakashi Iwai usb_audio_info(chip, 8900ba41d91STakashi Iwai "set quirks for FTU Effect Feedback/Volume\n"); 891d34bf148SFelix Homann cval->min = 0x00; 892d34bf148SFelix Homann cval->max = 0x7f; 893d34bf148SFelix Homann break; 894d34bf148SFelix Homann } 895d34bf148SFelix Homann break; 896d34bf148SFelix Homann 897dcaaf9f2STakashi Iwai case USB_ID(0x0471, 0x0101): 898dcaaf9f2STakashi Iwai case USB_ID(0x0471, 0x0104): 899dcaaf9f2STakashi Iwai case USB_ID(0x0471, 0x0105): 900dcaaf9f2STakashi Iwai case USB_ID(0x0672, 0x1041): 901dcaaf9f2STakashi Iwai /* quirk for UDA1321/N101. 902dcaaf9f2STakashi Iwai * note that detection between firmware 2.1.1.7 (N101) 903dcaaf9f2STakashi Iwai * and later 2.1.1.21 is not very clear from datasheets. 904dcaaf9f2STakashi Iwai * I hope that the min value is -15360 for newer firmware --jk 905dcaaf9f2STakashi Iwai */ 906dcaaf9f2STakashi Iwai if (!strcmp(kctl->id.name, "PCM Playback Volume") && 907dcaaf9f2STakashi Iwai cval->min == -15616) { 9080ba41d91STakashi Iwai usb_audio_info(chip, 909dcaaf9f2STakashi Iwai "set volume quirk for UDA1321/N101 chip\n"); 910dcaaf9f2STakashi Iwai cval->max = -256; 911dcaaf9f2STakashi Iwai } 912dcaaf9f2STakashi Iwai break; 913dcaaf9f2STakashi Iwai 914dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x09a4): 915dcaaf9f2STakashi Iwai if (!strcmp(kctl->id.name, "Mic Capture Volume")) { 9160ba41d91STakashi Iwai usb_audio_info(chip, 917dcaaf9f2STakashi Iwai "set volume quirk for QuickCam E3500\n"); 918dcaaf9f2STakashi Iwai cval->min = 6080; 919dcaaf9f2STakashi Iwai cval->max = 8768; 920dcaaf9f2STakashi Iwai cval->res = 192; 921dcaaf9f2STakashi Iwai } 922dcaaf9f2STakashi Iwai break; 923dcaaf9f2STakashi Iwai 924e805ca8bSTakashi Iwai case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */ 925dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x0808): 926dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x0809): 92764559311SJason Lee Cragg case USB_ID(0x046d, 0x0819): /* Logitech Webcam C210 */ 92836691e1bSTakashi Iwai case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */ 92955c0008bSAlexey Fisher case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ 93011e7064fSTakashi Iwai case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ 931140d37deSMaksim A. Boyko case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */ 9321ef9f058SWolfram Sang case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */ 933dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x0991): 934dcaaf9f2STakashi Iwai /* Most audio usb devices lie about volume resolution. 935dcaaf9f2STakashi Iwai * Most Logitech webcams have res = 384. 936dcaaf9f2STakashi Iwai * Proboly there is some logitech magic behind this number --fishor 937dcaaf9f2STakashi Iwai */ 938dcaaf9f2STakashi Iwai if (!strcmp(kctl->id.name, "Mic Capture Volume")) { 9390ba41d91STakashi Iwai usb_audio_info(chip, 940dcaaf9f2STakashi Iwai "set resolution quirk: cval->res = 384\n"); 941dcaaf9f2STakashi Iwai cval->res = 384; 942dcaaf9f2STakashi Iwai } 943dcaaf9f2STakashi Iwai break; 944dcaaf9f2STakashi Iwai } 945dcaaf9f2STakashi Iwai } 946dcaaf9f2STakashi Iwai 947f0b5e634SDaniel Mack /* 948f0b5e634SDaniel Mack * retrieve the minimum and maximum values for the specified control 949f0b5e634SDaniel Mack */ 950dcaaf9f2STakashi Iwai static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, 951dcaaf9f2STakashi Iwai int default_min, struct snd_kcontrol *kctl) 952f0b5e634SDaniel Mack { 953f0b5e634SDaniel Mack /* for failsafe */ 954f0b5e634SDaniel Mack cval->min = default_min; 955f0b5e634SDaniel Mack cval->max = cval->min + 1; 956f0b5e634SDaniel Mack cval->res = 1; 957f0b5e634SDaniel Mack cval->dBmin = cval->dBmax = 0; 958f0b5e634SDaniel Mack 959f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 960f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) { 961f0b5e634SDaniel Mack cval->initialized = 1; 962f0b5e634SDaniel Mack } else { 963f0b5e634SDaniel Mack int minchn = 0; 964f0b5e634SDaniel Mack if (cval->cmask) { 965f0b5e634SDaniel Mack int i; 966f0b5e634SDaniel Mack for (i = 0; i < MAX_CHANNELS; i++) 967f0b5e634SDaniel Mack if (cval->cmask & (1 << i)) { 968f0b5e634SDaniel Mack minchn = i + 1; 969f0b5e634SDaniel Mack break; 970f0b5e634SDaniel Mack } 971f0b5e634SDaniel Mack } 972f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || 973f0b5e634SDaniel Mack get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { 9743360b84bSTakashi Iwai usb_audio_err(cval->head.mixer->chip, 9750ba41d91STakashi Iwai "%d:%d: cannot get min/max values for control %d (id %d)\n", 9763360b84bSTakashi Iwai cval->head.id, snd_usb_ctrl_intf(cval->head.mixer->chip), 9773360b84bSTakashi Iwai cval->control, cval->head.id); 978f0b5e634SDaniel Mack return -EINVAL; 979f0b5e634SDaniel Mack } 9806bc170e4SDaniel Mack if (get_ctl_value(cval, UAC_GET_RES, 9816bc170e4SDaniel Mack (cval->control << 8) | minchn, 9826bc170e4SDaniel Mack &cval->res) < 0) { 983f0b5e634SDaniel Mack cval->res = 1; 984f0b5e634SDaniel Mack } else { 985f0b5e634SDaniel Mack int last_valid_res = cval->res; 986f0b5e634SDaniel Mack 987f0b5e634SDaniel Mack while (cval->res > 1) { 988f0b5e634SDaniel Mack if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, 9896bc170e4SDaniel Mack (cval->control << 8) | minchn, 9906bc170e4SDaniel Mack cval->res / 2) < 0) 991f0b5e634SDaniel Mack break; 992f0b5e634SDaniel Mack cval->res /= 2; 993f0b5e634SDaniel Mack } 9946bc170e4SDaniel Mack if (get_ctl_value(cval, UAC_GET_RES, 9956bc170e4SDaniel Mack (cval->control << 8) | minchn, &cval->res) < 0) 996f0b5e634SDaniel Mack cval->res = last_valid_res; 997f0b5e634SDaniel Mack } 998f0b5e634SDaniel Mack if (cval->res == 0) 999f0b5e634SDaniel Mack cval->res = 1; 1000f0b5e634SDaniel Mack 1001f0b5e634SDaniel Mack /* Additional checks for the proper resolution 1002f0b5e634SDaniel Mack * 1003f0b5e634SDaniel Mack * Some devices report smaller resolutions than actually 1004f0b5e634SDaniel Mack * reacting. They don't return errors but simply clip 1005f0b5e634SDaniel Mack * to the lower aligned value. 1006f0b5e634SDaniel Mack */ 1007f0b5e634SDaniel Mack if (cval->min + cval->res < cval->max) { 1008f0b5e634SDaniel Mack int last_valid_res = cval->res; 1009f0b5e634SDaniel Mack int saved, test, check; 1010f0b5e634SDaniel Mack get_cur_mix_raw(cval, minchn, &saved); 1011f0b5e634SDaniel Mack for (;;) { 1012f0b5e634SDaniel Mack test = saved; 1013f0b5e634SDaniel Mack if (test < cval->max) 1014f0b5e634SDaniel Mack test += cval->res; 1015f0b5e634SDaniel Mack else 1016f0b5e634SDaniel Mack test -= cval->res; 1017f0b5e634SDaniel Mack if (test < cval->min || test > cval->max || 1018eef90451SChris J Arges snd_usb_set_cur_mix_value(cval, minchn, 0, test) || 1019f0b5e634SDaniel Mack get_cur_mix_raw(cval, minchn, &check)) { 1020f0b5e634SDaniel Mack cval->res = last_valid_res; 1021f0b5e634SDaniel Mack break; 1022f0b5e634SDaniel Mack } 1023f0b5e634SDaniel Mack if (test == check) 1024f0b5e634SDaniel Mack break; 1025f0b5e634SDaniel Mack cval->res *= 2; 1026f0b5e634SDaniel Mack } 1027eef90451SChris J Arges snd_usb_set_cur_mix_value(cval, minchn, 0, saved); 1028f0b5e634SDaniel Mack } 1029f0b5e634SDaniel Mack 1030f0b5e634SDaniel Mack cval->initialized = 1; 1031f0b5e634SDaniel Mack } 1032f0b5e634SDaniel Mack 1033dcaaf9f2STakashi Iwai if (kctl) 1034dcaaf9f2STakashi Iwai volume_control_quirks(cval, kctl); 1035dcaaf9f2STakashi Iwai 1036f0b5e634SDaniel Mack /* USB descriptions contain the dB scale in 1/256 dB unit 1037f0b5e634SDaniel Mack * while ALSA TLV contains in 1/100 dB unit 1038f0b5e634SDaniel Mack */ 1039f0b5e634SDaniel Mack cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; 1040f0b5e634SDaniel Mack cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; 1041f0b5e634SDaniel Mack if (cval->dBmin > cval->dBmax) { 1042f0b5e634SDaniel Mack /* something is wrong; assume it's either from/to 0dB */ 1043f0b5e634SDaniel Mack if (cval->dBmin < 0) 1044f0b5e634SDaniel Mack cval->dBmax = 0; 1045f0b5e634SDaniel Mack else if (cval->dBmin > 0) 1046f0b5e634SDaniel Mack cval->dBmin = 0; 1047f0b5e634SDaniel Mack if (cval->dBmin > cval->dBmax) { 1048f0b5e634SDaniel Mack /* totally crap, return an error */ 1049f0b5e634SDaniel Mack return -EINVAL; 1050f0b5e634SDaniel Mack } 1051f0b5e634SDaniel Mack } 1052f0b5e634SDaniel Mack 1053f0b5e634SDaniel Mack return 0; 1054f0b5e634SDaniel Mack } 1055f0b5e634SDaniel Mack 1056dcaaf9f2STakashi Iwai #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) 1057f0b5e634SDaniel Mack 1058f0b5e634SDaniel Mack /* get a feature/mixer unit info */ 10596bc170e4SDaniel Mack static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, 10606bc170e4SDaniel Mack struct snd_ctl_elem_info *uinfo) 1061f0b5e634SDaniel Mack { 1062f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1063f0b5e634SDaniel Mack 1064f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 1065f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) 1066f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 1067f0b5e634SDaniel Mack else 1068f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 1069f0b5e634SDaniel Mack uinfo->count = cval->channels; 1070f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 1071f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) { 1072f0b5e634SDaniel Mack uinfo->value.integer.min = 0; 1073f0b5e634SDaniel Mack uinfo->value.integer.max = 1; 1074f0b5e634SDaniel Mack } else { 10759fcd0ab1STakashi Iwai if (!cval->initialized) { 1076dcaaf9f2STakashi Iwai get_min_max_with_quirks(cval, 0, kcontrol); 10779fcd0ab1STakashi Iwai if (cval->initialized && cval->dBmin >= cval->dBmax) { 10789fcd0ab1STakashi Iwai kcontrol->vd[0].access &= 10799fcd0ab1STakashi Iwai ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | 10809fcd0ab1STakashi Iwai SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); 10813360b84bSTakashi Iwai snd_ctl_notify(cval->head.mixer->chip->card, 10829fcd0ab1STakashi Iwai SNDRV_CTL_EVENT_MASK_INFO, 10839fcd0ab1STakashi Iwai &kcontrol->id); 10849fcd0ab1STakashi Iwai } 10859fcd0ab1STakashi Iwai } 1086f0b5e634SDaniel Mack uinfo->value.integer.min = 0; 1087f0b5e634SDaniel Mack uinfo->value.integer.max = 1088f0b5e634SDaniel Mack (cval->max - cval->min + cval->res - 1) / cval->res; 1089f0b5e634SDaniel Mack } 1090f0b5e634SDaniel Mack return 0; 1091f0b5e634SDaniel Mack } 1092f0b5e634SDaniel Mack 1093f0b5e634SDaniel Mack /* get the current value from feature/mixer unit */ 10946bc170e4SDaniel Mack static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, 10956bc170e4SDaniel Mack struct snd_ctl_elem_value *ucontrol) 1096f0b5e634SDaniel Mack { 1097f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1098f0b5e634SDaniel Mack int c, cnt, val, err; 1099f0b5e634SDaniel Mack 1100f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = cval->min; 1101f0b5e634SDaniel Mack if (cval->cmask) { 1102f0b5e634SDaniel Mack cnt = 0; 1103f0b5e634SDaniel Mack for (c = 0; c < MAX_CHANNELS; c++) { 1104f0b5e634SDaniel Mack if (!(cval->cmask & (1 << c))) 1105f0b5e634SDaniel Mack continue; 1106eef90451SChris J Arges err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val); 1107f0b5e634SDaniel Mack if (err < 0) 11085aeee342STakashi Iwai return filter_error(cval, err); 1109f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1110f0b5e634SDaniel Mack ucontrol->value.integer.value[cnt] = val; 1111f0b5e634SDaniel Mack cnt++; 1112f0b5e634SDaniel Mack } 1113f0b5e634SDaniel Mack return 0; 1114f0b5e634SDaniel Mack } else { 1115f0b5e634SDaniel Mack /* master channel */ 1116eef90451SChris J Arges err = snd_usb_get_cur_mix_value(cval, 0, 0, &val); 1117f0b5e634SDaniel Mack if (err < 0) 11185aeee342STakashi Iwai return filter_error(cval, err); 1119f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1120f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = val; 1121f0b5e634SDaniel Mack } 1122f0b5e634SDaniel Mack return 0; 1123f0b5e634SDaniel Mack } 1124f0b5e634SDaniel Mack 1125f0b5e634SDaniel Mack /* put the current value to feature/mixer unit */ 11266bc170e4SDaniel Mack static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, 11276bc170e4SDaniel Mack struct snd_ctl_elem_value *ucontrol) 1128f0b5e634SDaniel Mack { 1129f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1130f0b5e634SDaniel Mack int c, cnt, val, oval, err; 1131f0b5e634SDaniel Mack int changed = 0; 1132f0b5e634SDaniel Mack 1133f0b5e634SDaniel Mack if (cval->cmask) { 1134f0b5e634SDaniel Mack cnt = 0; 1135f0b5e634SDaniel Mack for (c = 0; c < MAX_CHANNELS; c++) { 1136f0b5e634SDaniel Mack if (!(cval->cmask & (1 << c))) 1137f0b5e634SDaniel Mack continue; 1138eef90451SChris J Arges err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval); 1139f0b5e634SDaniel Mack if (err < 0) 11405aeee342STakashi Iwai return filter_error(cval, err); 1141f0b5e634SDaniel Mack val = ucontrol->value.integer.value[cnt]; 1142f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1143f0b5e634SDaniel Mack if (oval != val) { 1144eef90451SChris J Arges snd_usb_set_cur_mix_value(cval, c + 1, cnt, val); 1145f0b5e634SDaniel Mack changed = 1; 1146f0b5e634SDaniel Mack } 1147f0b5e634SDaniel Mack cnt++; 1148f0b5e634SDaniel Mack } 1149f0b5e634SDaniel Mack } else { 1150f0b5e634SDaniel Mack /* master channel */ 1151eef90451SChris J Arges err = snd_usb_get_cur_mix_value(cval, 0, 0, &oval); 1152f0b5e634SDaniel Mack if (err < 0) 11535aeee342STakashi Iwai return filter_error(cval, err); 1154f0b5e634SDaniel Mack val = ucontrol->value.integer.value[0]; 1155f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1156f0b5e634SDaniel Mack if (val != oval) { 1157eef90451SChris J Arges snd_usb_set_cur_mix_value(cval, 0, 0, val); 1158f0b5e634SDaniel Mack changed = 1; 1159f0b5e634SDaniel Mack } 1160f0b5e634SDaniel Mack } 1161f0b5e634SDaniel Mack return changed; 1162f0b5e634SDaniel Mack } 1163f0b5e634SDaniel Mack 1164f0b5e634SDaniel Mack static struct snd_kcontrol_new usb_feature_unit_ctl = { 1165f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1166f0b5e634SDaniel Mack .name = "", /* will be filled later manually */ 1167f0b5e634SDaniel Mack .info = mixer_ctl_feature_info, 1168f0b5e634SDaniel Mack .get = mixer_ctl_feature_get, 1169f0b5e634SDaniel Mack .put = mixer_ctl_feature_put, 1170f0b5e634SDaniel Mack }; 1171f0b5e634SDaniel Mack 117223caaf19SDaniel Mack /* the read-only variant */ 117323caaf19SDaniel Mack static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { 117423caaf19SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 117523caaf19SDaniel Mack .name = "", /* will be filled later manually */ 117623caaf19SDaniel Mack .info = mixer_ctl_feature_info, 117723caaf19SDaniel Mack .get = mixer_ctl_feature_get, 117823caaf19SDaniel Mack .put = NULL, 117923caaf19SDaniel Mack }; 118023caaf19SDaniel Mack 11816bc170e4SDaniel Mack /* 11826bc170e4SDaniel Mack * This symbol is exported in order to allow the mixer quirks to 11836bc170e4SDaniel Mack * hook up to the standard feature unit control mechanism 11846bc170e4SDaniel Mack */ 11859e38658fSDaniel Mack struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; 1186f0b5e634SDaniel Mack 1187f0b5e634SDaniel Mack /* 1188f0b5e634SDaniel Mack * build a feature control 1189f0b5e634SDaniel Mack */ 1190f0b5e634SDaniel Mack static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) 1191f0b5e634SDaniel Mack { 1192f0b5e634SDaniel Mack return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); 1193f0b5e634SDaniel Mack } 1194f0b5e634SDaniel Mack 11956bc170e4SDaniel Mack /* 11966bc170e4SDaniel Mack * A lot of headsets/headphones have a "Speaker" mixer. Make sure we 11976bc170e4SDaniel Mack * rename it to "Headphone". We determine if something is a headphone 11986bc170e4SDaniel Mack * similar to how udev determines form factor. 11996bc170e4SDaniel Mack */ 12009b4ef977SDavid Henningsson static void check_no_speaker_on_headset(struct snd_kcontrol *kctl, 12019b4ef977SDavid Henningsson struct snd_card *card) 12029b4ef977SDavid Henningsson { 12039b4ef977SDavid Henningsson const char *names_to_check[] = { 12049b4ef977SDavid Henningsson "Headset", "headset", "Headphone", "headphone", NULL}; 12059b4ef977SDavid Henningsson const char **s; 1206e0f17c75SPeter Senna Tschudin bool found = false; 12079b4ef977SDavid Henningsson 12089b4ef977SDavid Henningsson if (strcmp("Speaker", kctl->id.name)) 12099b4ef977SDavid Henningsson return; 12109b4ef977SDavid Henningsson 12119b4ef977SDavid Henningsson for (s = names_to_check; *s; s++) 12129b4ef977SDavid Henningsson if (strstr(card->shortname, *s)) { 1213e0f17c75SPeter Senna Tschudin found = true; 12149b4ef977SDavid Henningsson break; 12159b4ef977SDavid Henningsson } 12169b4ef977SDavid Henningsson 12179b4ef977SDavid Henningsson if (!found) 12189b4ef977SDavid Henningsson return; 12199b4ef977SDavid Henningsson 12209b4ef977SDavid Henningsson strlcpy(kctl->id.name, "Headphone", sizeof(kctl->id.name)); 12219b4ef977SDavid Henningsson } 12229b4ef977SDavid Henningsson 122399fc8645SDaniel Mack static void build_feature_ctl(struct mixer_build *state, void *raw_desc, 1224f0b5e634SDaniel Mack unsigned int ctl_mask, int control, 122523caaf19SDaniel Mack struct usb_audio_term *iterm, int unitid, 1226a6a33259SDaniel Mack int readonly_mask) 1227f0b5e634SDaniel Mack { 122899fc8645SDaniel Mack struct uac_feature_unit_descriptor *desc = raw_desc; 1229bc18e31cSJulian Scheel struct usb_feature_control_info *ctl_info; 1230f0b5e634SDaniel Mack unsigned int len = 0; 1231f0b5e634SDaniel Mack int mapped_name = 0; 123299fc8645SDaniel Mack int nameid = uac_feature_unit_iFeature(desc); 1233f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1234f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1235f0b5e634SDaniel Mack const struct usbmix_name_map *map; 123680acefffSAlexey Fisher unsigned int range; 1237f0b5e634SDaniel Mack 1238f0b5e634SDaniel Mack control++; /* change from zero-based to 1-based value */ 1239f0b5e634SDaniel Mack 124065f25da4SDaniel Mack if (control == UAC_FU_GRAPHIC_EQUALIZER) { 1241f0b5e634SDaniel Mack /* FIXME: not supported yet */ 1242f0b5e634SDaniel Mack return; 1243f0b5e634SDaniel Mack } 1244f0b5e634SDaniel Mack 1245f0b5e634SDaniel Mack map = find_map(state, unitid, control); 1246f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1247f0b5e634SDaniel Mack return; 1248f0b5e634SDaniel Mack 1249f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1250a860d95fSDaniel Mack if (!cval) 1251f0b5e634SDaniel Mack return; 12523360b84bSTakashi Iwai snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); 1253f0b5e634SDaniel Mack cval->control = control; 1254f0b5e634SDaniel Mack cval->cmask = ctl_mask; 1255bc18e31cSJulian Scheel ctl_info = &audio_feature_info[control-1]; 1256bc18e31cSJulian Scheel if (state->mixer->protocol == UAC_VERSION_1) 1257bc18e31cSJulian Scheel cval->val_type = ctl_info->type; 1258bc18e31cSJulian Scheel else /* UAC_VERSION_2 */ 1259bc18e31cSJulian Scheel cval->val_type = ctl_info->type_uac2 >= 0 ? 1260bc18e31cSJulian Scheel ctl_info->type_uac2 : ctl_info->type; 1261bc18e31cSJulian Scheel 1262a6a33259SDaniel Mack if (ctl_mask == 0) { 1263f0b5e634SDaniel Mack cval->channels = 1; /* master channel */ 1264a6a33259SDaniel Mack cval->master_readonly = readonly_mask; 1265a6a33259SDaniel Mack } else { 1266f0b5e634SDaniel Mack int i, c = 0; 1267f0b5e634SDaniel Mack for (i = 0; i < 16; i++) 1268f0b5e634SDaniel Mack if (ctl_mask & (1 << i)) 1269f0b5e634SDaniel Mack c++; 1270f0b5e634SDaniel Mack cval->channels = c; 1271a6a33259SDaniel Mack cval->ch_readonly = readonly_mask; 1272f0b5e634SDaniel Mack } 1273f0b5e634SDaniel Mack 12746bc170e4SDaniel Mack /* 12756bc170e4SDaniel Mack * If all channels in the mask are marked read-only, make the control 1276eef90451SChris J Arges * read-only. snd_usb_set_cur_mix_value() will check the mask again and won't 12776bc170e4SDaniel Mack * issue write commands to read-only channels. 12786bc170e4SDaniel Mack */ 1279a6a33259SDaniel Mack if (cval->channels == readonly_mask) 128023caaf19SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); 128123caaf19SDaniel Mack else 1282f0b5e634SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 128323caaf19SDaniel Mack 1284f0b5e634SDaniel Mack if (!kctl) { 12850ba41d91STakashi Iwai usb_audio_err(state->chip, "cannot malloc kcontrol\n"); 1286f0b5e634SDaniel Mack kfree(cval); 1287f0b5e634SDaniel Mack return; 1288f0b5e634SDaniel Mack } 1289eef90451SChris J Arges kctl->private_free = snd_usb_mixer_elem_free; 1290f0b5e634SDaniel Mack 1291f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1292f0b5e634SDaniel Mack mapped_name = len != 0; 1293f0b5e634SDaniel Mack if (!len && nameid) 1294f0b5e634SDaniel Mack len = snd_usb_copy_string_desc(state, nameid, 1295f0b5e634SDaniel Mack kctl->id.name, sizeof(kctl->id.name)); 1296f0b5e634SDaniel Mack 1297f0b5e634SDaniel Mack switch (control) { 129865f25da4SDaniel Mack case UAC_FU_MUTE: 129965f25da4SDaniel Mack case UAC_FU_VOLUME: 13006bc170e4SDaniel Mack /* 13016bc170e4SDaniel Mack * determine the control name. the rule is: 1302f0b5e634SDaniel Mack * - if a name id is given in descriptor, use it. 1303f0b5e634SDaniel Mack * - if the connected input can be determined, then use the name 1304f0b5e634SDaniel Mack * of terminal type. 1305f0b5e634SDaniel Mack * - if the connected output can be determined, use it. 1306f0b5e634SDaniel Mack * - otherwise, anonymous name. 1307f0b5e634SDaniel Mack */ 1308f0b5e634SDaniel Mack if (!len) { 13096bc170e4SDaniel Mack len = get_term_name(state, iterm, kctl->id.name, 13106bc170e4SDaniel Mack sizeof(kctl->id.name), 1); 1311f0b5e634SDaniel Mack if (!len) 13126bc170e4SDaniel Mack len = get_term_name(state, &state->oterm, 13136bc170e4SDaniel Mack kctl->id.name, 13146bc170e4SDaniel Mack sizeof(kctl->id.name), 1); 1315f0b5e634SDaniel Mack if (!len) 131649fd46d2SDaniel Mack snprintf(kctl->id.name, sizeof(kctl->id.name), 1317f0b5e634SDaniel Mack "Feature %d", unitid); 1318f0b5e634SDaniel Mack } 13199b4ef977SDavid Henningsson 13209b4ef977SDavid Henningsson if (!mapped_name) 13219b4ef977SDavid Henningsson check_no_speaker_on_headset(kctl, state->mixer->chip->card); 13229b4ef977SDavid Henningsson 13236bc170e4SDaniel Mack /* 13246bc170e4SDaniel Mack * determine the stream direction: 1325f0b5e634SDaniel Mack * if the connected output is USB stream, then it's likely a 1326f0b5e634SDaniel Mack * capture stream. otherwise it should be playback (hopefully :) 1327f0b5e634SDaniel Mack */ 1328f0b5e634SDaniel Mack if (!mapped_name && !(state->oterm.type >> 16)) { 13296bc170e4SDaniel Mack if ((state->oterm.type & 0xff00) == 0x0100) 133049fd46d2SDaniel Mack append_ctl_name(kctl, " Capture"); 13316bc170e4SDaniel Mack else 133249fd46d2SDaniel Mack append_ctl_name(kctl, " Playback"); 1333f0b5e634SDaniel Mack } 133465f25da4SDaniel Mack append_ctl_name(kctl, control == UAC_FU_MUTE ? 1335f0b5e634SDaniel Mack " Switch" : " Volume"); 1336e182534dSTakashi Iwai break; 1337e182534dSTakashi Iwai default: 1338e182534dSTakashi Iwai if (!len) 1339e182534dSTakashi Iwai strlcpy(kctl->id.name, audio_feature_info[control-1].name, 1340e182534dSTakashi Iwai sizeof(kctl->id.name)); 1341e182534dSTakashi Iwai break; 1342e182534dSTakashi Iwai } 1343e182534dSTakashi Iwai 1344e182534dSTakashi Iwai /* get min/max values */ 1345e182534dSTakashi Iwai get_min_max_with_quirks(cval, 0, kctl); 1346e182534dSTakashi Iwai 134765f25da4SDaniel Mack if (control == UAC_FU_VOLUME) { 134859bb7f0eSTakashi Iwai check_mapped_dB(map, cval); 134938b65190STakashi Iwai if (cval->dBmin < cval->dBmax || !cval->initialized) { 1350285de9c0SFelix Homann kctl->tlv.c = snd_usb_mixer_vol_tlv; 1351f0b5e634SDaniel Mack kctl->vd[0].access |= 1352f0b5e634SDaniel Mack SNDRV_CTL_ELEM_ACCESS_TLV_READ | 1353f0b5e634SDaniel Mack SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; 135459bb7f0eSTakashi Iwai } 1355f0b5e634SDaniel Mack } 1356f0b5e634SDaniel Mack 135742e3121dSAnssi Hannula snd_usb_mixer_fu_apply_quirk(state->mixer, cval, unitid, kctl); 135842e3121dSAnssi Hannula 135980acefffSAlexey Fisher range = (cval->max - cval->min) / cval->res; 13606bc170e4SDaniel Mack /* 13616bc170e4SDaniel Mack * Are there devices with volume range more than 255? I use a bit more 136280acefffSAlexey Fisher * to be sure. 384 is a resolution magic number found on Logitech 136380acefffSAlexey Fisher * devices. It will definitively catch all buggy Logitech devices. 136480acefffSAlexey Fisher */ 136580acefffSAlexey Fisher if (range > 384) { 13666bc170e4SDaniel Mack usb_audio_warn(state->chip, 136782c1cf0aSMichał Mirosław "Warning! Unlikely big volume range (=%u), cval->res is probably wrong.", 136880acefffSAlexey Fisher range); 136982c1cf0aSMichał Mirosław usb_audio_warn(state->chip, 137082c1cf0aSMichał Mirosław "[%d] FU [%s] ch = %d, val = %d/%d/%d", 13713360b84bSTakashi Iwai cval->head.id, kctl->id.name, cval->channels, 137280acefffSAlexey Fisher cval->min, cval->max, cval->res); 137380acefffSAlexey Fisher } 137480acefffSAlexey Fisher 13750ba41d91STakashi Iwai usb_audio_dbg(state->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", 13763360b84bSTakashi Iwai cval->head.id, kctl->id.name, cval->channels, 13776bc170e4SDaniel Mack cval->min, cval->max, cval->res); 13783360b84bSTakashi Iwai snd_usb_mixer_add_control(&cval->head, kctl); 1379f0b5e634SDaniel Mack } 1380f0b5e634SDaniel Mack 1381f0b5e634SDaniel Mack /* 1382f0b5e634SDaniel Mack * parse a feature unit 1383f0b5e634SDaniel Mack * 138425985edcSLucas De Marchi * most of controls are defined here. 1385f0b5e634SDaniel Mack */ 13866bc170e4SDaniel Mack static int parse_audio_feature_unit(struct mixer_build *state, int unitid, 13876bc170e4SDaniel Mack void *_ftr) 1388f0b5e634SDaniel Mack { 1389f0b5e634SDaniel Mack int channels, i, j; 1390f0b5e634SDaniel Mack struct usb_audio_term iterm; 1391f0b5e634SDaniel Mack unsigned int master_bits, first_ch_bits; 1392f0b5e634SDaniel Mack int err, csize; 139323caaf19SDaniel Mack struct uac_feature_unit_descriptor *hdr = _ftr; 139423caaf19SDaniel Mack __u8 *bmaControls; 1395f0b5e634SDaniel Mack 139623caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 139723caaf19SDaniel Mack csize = hdr->bControlSize; 139860c961a9SNicolai Krakowiak if (!csize) { 13990ba41d91STakashi Iwai usb_audio_dbg(state->chip, 14000ba41d91STakashi Iwai "unit %u: invalid bControlSize == 0\n", 14010ba41d91STakashi Iwai unitid); 140260c961a9SNicolai Krakowiak return -EINVAL; 140360c961a9SNicolai Krakowiak } 140423caaf19SDaniel Mack channels = (hdr->bLength - 7) / csize - 1; 140523caaf19SDaniel Mack bmaControls = hdr->bmaControls; 1406d56268fbSClemens Ladisch if (hdr->bLength < 7 + csize) { 14070ba41d91STakashi Iwai usb_audio_err(state->chip, 14080ba41d91STakashi Iwai "unit %u: invalid UAC_FEATURE_UNIT descriptor\n", 1409d56268fbSClemens Ladisch unitid); 1410d56268fbSClemens Ladisch return -EINVAL; 1411d56268fbSClemens Ladisch } 141223caaf19SDaniel Mack } else { 141323caaf19SDaniel Mack struct uac2_feature_unit_descriptor *ftr = _ftr; 141423caaf19SDaniel Mack csize = 4; 1415e8d0fee7SDaniel Mack channels = (hdr->bLength - 6) / 4 - 1; 141623caaf19SDaniel Mack bmaControls = ftr->bmaControls; 1417d56268fbSClemens Ladisch if (hdr->bLength < 6 + csize) { 14180ba41d91STakashi Iwai usb_audio_err(state->chip, 14190ba41d91STakashi Iwai "unit %u: invalid UAC_FEATURE_UNIT descriptor\n", 1420d56268fbSClemens Ladisch unitid); 1421f0b5e634SDaniel Mack return -EINVAL; 1422f0b5e634SDaniel Mack } 1423d56268fbSClemens Ladisch } 1424f0b5e634SDaniel Mack 1425f0b5e634SDaniel Mack /* parse the source unit */ 142623caaf19SDaniel Mack if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0) 1427f0b5e634SDaniel Mack return err; 1428f0b5e634SDaniel Mack 1429f0b5e634SDaniel Mack /* determine the input source type and name */ 14304d7b86c9SDaniel Mack err = check_input_term(state, hdr->bSourceID, &iterm); 14314d7b86c9SDaniel Mack if (err < 0) 14324d7b86c9SDaniel Mack return err; 1433f0b5e634SDaniel Mack 143423caaf19SDaniel Mack master_bits = snd_usb_combine_bytes(bmaControls, csize); 1435f0b5e634SDaniel Mack /* master configuration quirks */ 1436f0b5e634SDaniel Mack switch (state->chip->usb_id) { 1437f0b5e634SDaniel Mack case USB_ID(0x08bb, 0x2702): 14380ba41d91STakashi Iwai usb_audio_info(state->chip, 1439f0b5e634SDaniel Mack "usbmixer: master volume quirk for PCM2702 chip\n"); 1440f0b5e634SDaniel Mack /* disable non-functional volume control */ 144165f25da4SDaniel Mack master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); 1442f0b5e634SDaniel Mack break; 1443c1051439SDavid Henningsson case USB_ID(0x1130, 0xf211): 14440ba41d91STakashi Iwai usb_audio_info(state->chip, 1445c1051439SDavid Henningsson "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); 1446c1051439SDavid Henningsson /* disable non-functional volume control */ 1447c1051439SDavid Henningsson channels = 0; 1448c1051439SDavid Henningsson break; 1449c1051439SDavid Henningsson 1450f0b5e634SDaniel Mack } 1451f0b5e634SDaniel Mack if (channels > 0) 145223caaf19SDaniel Mack first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); 1453f0b5e634SDaniel Mack else 1454f0b5e634SDaniel Mack first_ch_bits = 0; 145523caaf19SDaniel Mack 145623caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 1457f0b5e634SDaniel Mack /* check all control types */ 1458f0b5e634SDaniel Mack for (i = 0; i < 10; i++) { 1459f0b5e634SDaniel Mack unsigned int ch_bits = 0; 1460f0b5e634SDaniel Mack for (j = 0; j < channels; j++) { 14616bc170e4SDaniel Mack unsigned int mask; 14626bc170e4SDaniel Mack 14636bc170e4SDaniel Mack mask = snd_usb_combine_bytes(bmaControls + 14646bc170e4SDaniel Mack csize * (j+1), csize); 1465f0b5e634SDaniel Mack if (mask & (1 << i)) 1466f0b5e634SDaniel Mack ch_bits |= (1 << j); 1467f0b5e634SDaniel Mack } 146823caaf19SDaniel Mack /* audio class v1 controls are never read-only */ 14696bc170e4SDaniel Mack 14706bc170e4SDaniel Mack /* 14716bc170e4SDaniel Mack * The first channel must be set 14726bc170e4SDaniel Mack * (for ease of programming). 14736bc170e4SDaniel Mack */ 14746bc170e4SDaniel Mack if (ch_bits & 1) 14756bc170e4SDaniel Mack build_feature_ctl(state, _ftr, ch_bits, i, 14766bc170e4SDaniel Mack &iterm, unitid, 0); 1477f0b5e634SDaniel Mack if (master_bits & (1 << i)) 14786bc170e4SDaniel Mack build_feature_ctl(state, _ftr, 0, i, &iterm, 14796bc170e4SDaniel Mack unitid, 0); 148023caaf19SDaniel Mack } 148123caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 1482d09c06c6STakashi Iwai for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { 148323caaf19SDaniel Mack unsigned int ch_bits = 0; 148423caaf19SDaniel Mack unsigned int ch_read_only = 0; 148523caaf19SDaniel Mack 148623caaf19SDaniel Mack for (j = 0; j < channels; j++) { 14876bc170e4SDaniel Mack unsigned int mask; 14886bc170e4SDaniel Mack 14896bc170e4SDaniel Mack mask = snd_usb_combine_bytes(bmaControls + 14906bc170e4SDaniel Mack csize * (j+1), csize); 1491dcbe7bcfSDaniel Mack if (uac2_control_is_readable(mask, i)) { 149223caaf19SDaniel Mack ch_bits |= (1 << j); 1493dcbe7bcfSDaniel Mack if (!uac2_control_is_writeable(mask, i)) 149423caaf19SDaniel Mack ch_read_only |= (1 << j); 149523caaf19SDaniel Mack } 149623caaf19SDaniel Mack } 149723caaf19SDaniel Mack 14986bc170e4SDaniel Mack /* 14996bc170e4SDaniel Mack * NOTE: build_feature_ctl() will mark the control 15006bc170e4SDaniel Mack * read-only if all channels are marked read-only in 15016bc170e4SDaniel Mack * the descriptors. Otherwise, the control will be 15026bc170e4SDaniel Mack * reported as writeable, but the driver will not 15036bc170e4SDaniel Mack * actually issue a write command for read-only 15046bc170e4SDaniel Mack * channels. 15056bc170e4SDaniel Mack */ 15066bc170e4SDaniel Mack 15076bc170e4SDaniel Mack /* 15086bc170e4SDaniel Mack * The first channel must be set 15096bc170e4SDaniel Mack * (for ease of programming). 15106bc170e4SDaniel Mack */ 15116bc170e4SDaniel Mack if (ch_bits & 1) 15126bc170e4SDaniel Mack build_feature_ctl(state, _ftr, ch_bits, i, 15136bc170e4SDaniel Mack &iterm, unitid, ch_read_only); 1514dcbe7bcfSDaniel Mack if (uac2_control_is_readable(master_bits, i)) 151523caaf19SDaniel Mack build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 1516dcbe7bcfSDaniel Mack !uac2_control_is_writeable(master_bits, i)); 151723caaf19SDaniel Mack } 1518f0b5e634SDaniel Mack } 1519f0b5e634SDaniel Mack 1520f0b5e634SDaniel Mack return 0; 1521f0b5e634SDaniel Mack } 1522f0b5e634SDaniel Mack 1523f0b5e634SDaniel Mack /* 1524f0b5e634SDaniel Mack * Mixer Unit 1525f0b5e634SDaniel Mack */ 1526f0b5e634SDaniel Mack 1527f0b5e634SDaniel Mack /* 1528f0b5e634SDaniel Mack * build a mixer unit control 1529f0b5e634SDaniel Mack * 1530f0b5e634SDaniel Mack * the callbacks are identical with feature unit. 1531f0b5e634SDaniel Mack * input channel number (zero based) is given in control field instead. 1532f0b5e634SDaniel Mack */ 153399fc8645SDaniel Mack static void build_mixer_unit_ctl(struct mixer_build *state, 153499fc8645SDaniel Mack struct uac_mixer_unit_descriptor *desc, 1535f0b5e634SDaniel Mack int in_pin, int in_ch, int unitid, 1536f0b5e634SDaniel Mack struct usb_audio_term *iterm) 1537f0b5e634SDaniel Mack { 1538f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 153999fc8645SDaniel Mack unsigned int num_outs = uac_mixer_unit_bNrChannels(desc); 1540f0b5e634SDaniel Mack unsigned int i, len; 1541f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1542f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1543f0b5e634SDaniel Mack 1544f0b5e634SDaniel Mack map = find_map(state, unitid, 0); 1545f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1546f0b5e634SDaniel Mack return; 1547f0b5e634SDaniel Mack 1548f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1549f0b5e634SDaniel Mack if (!cval) 1550f0b5e634SDaniel Mack return; 1551f0b5e634SDaniel Mack 15523360b84bSTakashi Iwai snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); 1553f0b5e634SDaniel Mack cval->control = in_ch + 1; /* based on 1 */ 1554f0b5e634SDaniel Mack cval->val_type = USB_MIXER_S16; 1555f0b5e634SDaniel Mack for (i = 0; i < num_outs; i++) { 15566bc170e4SDaniel Mack __u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol); 15576bc170e4SDaniel Mack 15586bc170e4SDaniel Mack if (check_matrix_bitmap(c, in_ch, i, num_outs)) { 1559f0b5e634SDaniel Mack cval->cmask |= (1 << i); 1560f0b5e634SDaniel Mack cval->channels++; 1561f0b5e634SDaniel Mack } 1562f0b5e634SDaniel Mack } 1563f0b5e634SDaniel Mack 1564f0b5e634SDaniel Mack /* get min/max values */ 1565f0b5e634SDaniel Mack get_min_max(cval, 0); 1566f0b5e634SDaniel Mack 1567f0b5e634SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 1568f0b5e634SDaniel Mack if (!kctl) { 15690ba41d91STakashi Iwai usb_audio_err(state->chip, "cannot malloc kcontrol\n"); 1570f0b5e634SDaniel Mack kfree(cval); 1571f0b5e634SDaniel Mack return; 1572f0b5e634SDaniel Mack } 1573eef90451SChris J Arges kctl->private_free = snd_usb_mixer_elem_free; 1574f0b5e634SDaniel Mack 1575f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1576f0b5e634SDaniel Mack if (!len) 15776bc170e4SDaniel Mack len = get_term_name(state, iterm, kctl->id.name, 15786bc170e4SDaniel Mack sizeof(kctl->id.name), 0); 1579f0b5e634SDaniel Mack if (!len) 1580f0b5e634SDaniel Mack len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); 1581f0b5e634SDaniel Mack append_ctl_name(kctl, " Volume"); 1582f0b5e634SDaniel Mack 15830ba41d91STakashi Iwai usb_audio_dbg(state->chip, "[%d] MU [%s] ch = %d, val = %d/%d\n", 15843360b84bSTakashi Iwai cval->head.id, kctl->id.name, cval->channels, cval->min, cval->max); 15853360b84bSTakashi Iwai snd_usb_mixer_add_control(&cval->head, kctl); 1586f0b5e634SDaniel Mack } 1587f0b5e634SDaniel Mack 1588f0b5e634SDaniel Mack /* 1589f0b5e634SDaniel Mack * parse a mixer unit 1590f0b5e634SDaniel Mack */ 15916bc170e4SDaniel Mack static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, 15926bc170e4SDaniel Mack void *raw_desc) 1593f0b5e634SDaniel Mack { 159499fc8645SDaniel Mack struct uac_mixer_unit_descriptor *desc = raw_desc; 1595f0b5e634SDaniel Mack struct usb_audio_term iterm; 1596f0b5e634SDaniel Mack int input_pins, num_ins, num_outs; 1597f0b5e634SDaniel Mack int pin, ich, err; 1598f0b5e634SDaniel Mack 15996bc170e4SDaniel Mack if (desc->bLength < 11 || !(input_pins = desc->bNrInPins) || 16006bc170e4SDaniel Mack !(num_outs = uac_mixer_unit_bNrChannels(desc))) { 16016bc170e4SDaniel Mack usb_audio_err(state->chip, 16026bc170e4SDaniel Mack "invalid MIXER UNIT descriptor %d\n", 16036bc170e4SDaniel Mack unitid); 1604f0b5e634SDaniel Mack return -EINVAL; 1605f0b5e634SDaniel Mack } 1606f0b5e634SDaniel Mack 1607f0b5e634SDaniel Mack num_ins = 0; 1608f0b5e634SDaniel Mack ich = 0; 1609f0b5e634SDaniel Mack for (pin = 0; pin < input_pins; pin++) { 161099fc8645SDaniel Mack err = parse_audio_unit(state, desc->baSourceID[pin]); 1611f0b5e634SDaniel Mack if (err < 0) 1612284a8dd6SMark Hills continue; 1613ea114fc2SClemens Ladisch /* no bmControls field (e.g. Maya44) -> ignore */ 1614ea114fc2SClemens Ladisch if (desc->bLength <= 10 + input_pins) 1615ea114fc2SClemens Ladisch continue; 161699fc8645SDaniel Mack err = check_input_term(state, desc->baSourceID[pin], &iterm); 1617f0b5e634SDaniel Mack if (err < 0) 1618f0b5e634SDaniel Mack return err; 1619f0b5e634SDaniel Mack num_ins += iterm.channels; 16206bc170e4SDaniel Mack for (; ich < num_ins; ich++) { 1621f0b5e634SDaniel Mack int och, ich_has_controls = 0; 1622f0b5e634SDaniel Mack 16236bc170e4SDaniel Mack for (och = 0; och < num_outs; och++) { 16246bc170e4SDaniel Mack __u8 *c = uac_mixer_unit_bmControls(desc, 16256bc170e4SDaniel Mack state->mixer->protocol); 16266bc170e4SDaniel Mack 16276bc170e4SDaniel Mack if (check_matrix_bitmap(c, ich, och, num_outs)) { 1628f0b5e634SDaniel Mack ich_has_controls = 1; 1629f0b5e634SDaniel Mack break; 1630f0b5e634SDaniel Mack } 1631f0b5e634SDaniel Mack } 1632f0b5e634SDaniel Mack if (ich_has_controls) 1633f0b5e634SDaniel Mack build_mixer_unit_ctl(state, desc, pin, ich, 1634f0b5e634SDaniel Mack unitid, &iterm); 1635f0b5e634SDaniel Mack } 1636f0b5e634SDaniel Mack } 1637f0b5e634SDaniel Mack return 0; 1638f0b5e634SDaniel Mack } 1639f0b5e634SDaniel Mack 1640f0b5e634SDaniel Mack /* 1641f0b5e634SDaniel Mack * Processing Unit / Extension Unit 1642f0b5e634SDaniel Mack */ 1643f0b5e634SDaniel Mack 1644f0b5e634SDaniel Mack /* get callback for processing/extension unit */ 16456bc170e4SDaniel Mack static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, 16466bc170e4SDaniel Mack struct snd_ctl_elem_value *ucontrol) 1647f0b5e634SDaniel Mack { 1648f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1649f0b5e634SDaniel Mack int err, val; 1650f0b5e634SDaniel Mack 1651f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &val); 16525aeee342STakashi Iwai if (err < 0) { 1653f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = cval->min; 16545aeee342STakashi Iwai return filter_error(cval, err); 1655f0b5e634SDaniel Mack } 1656f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1657f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = val; 1658f0b5e634SDaniel Mack return 0; 1659f0b5e634SDaniel Mack } 1660f0b5e634SDaniel Mack 1661f0b5e634SDaniel Mack /* put callback for processing/extension unit */ 16626bc170e4SDaniel Mack static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, 16636bc170e4SDaniel Mack struct snd_ctl_elem_value *ucontrol) 1664f0b5e634SDaniel Mack { 1665f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1666f0b5e634SDaniel Mack int val, oval, err; 1667f0b5e634SDaniel Mack 1668f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &oval); 16695aeee342STakashi Iwai if (err < 0) 16705aeee342STakashi Iwai return filter_error(cval, err); 1671f0b5e634SDaniel Mack val = ucontrol->value.integer.value[0]; 1672f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1673f0b5e634SDaniel Mack if (val != oval) { 1674f0b5e634SDaniel Mack set_cur_ctl_value(cval, cval->control << 8, val); 1675f0b5e634SDaniel Mack return 1; 1676f0b5e634SDaniel Mack } 1677f0b5e634SDaniel Mack return 0; 1678f0b5e634SDaniel Mack } 1679f0b5e634SDaniel Mack 1680f0b5e634SDaniel Mack /* alsa control interface for processing/extension unit */ 1681f0b5e634SDaniel Mack static struct snd_kcontrol_new mixer_procunit_ctl = { 1682f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1683f0b5e634SDaniel Mack .name = "", /* will be filled later */ 1684f0b5e634SDaniel Mack .info = mixer_ctl_feature_info, 1685f0b5e634SDaniel Mack .get = mixer_ctl_procunit_get, 1686f0b5e634SDaniel Mack .put = mixer_ctl_procunit_put, 1687f0b5e634SDaniel Mack }; 1688f0b5e634SDaniel Mack 1689f0b5e634SDaniel Mack /* 1690f0b5e634SDaniel Mack * predefined data for processing units 1691f0b5e634SDaniel Mack */ 1692f0b5e634SDaniel Mack struct procunit_value_info { 1693f0b5e634SDaniel Mack int control; 1694f0b5e634SDaniel Mack char *suffix; 1695f0b5e634SDaniel Mack int val_type; 1696f0b5e634SDaniel Mack int min_value; 1697f0b5e634SDaniel Mack }; 1698f0b5e634SDaniel Mack 1699f0b5e634SDaniel Mack struct procunit_info { 1700f0b5e634SDaniel Mack int type; 1701f0b5e634SDaniel Mack char *name; 1702f0b5e634SDaniel Mack struct procunit_value_info *values; 1703f0b5e634SDaniel Mack }; 1704f0b5e634SDaniel Mack 1705f0b5e634SDaniel Mack static struct procunit_value_info updown_proc_info[] = { 170665f25da4SDaniel Mack { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 170765f25da4SDaniel Mack { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, 1708f0b5e634SDaniel Mack { 0 } 1709f0b5e634SDaniel Mack }; 1710f0b5e634SDaniel Mack static struct procunit_value_info prologic_proc_info[] = { 171165f25da4SDaniel Mack { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 171265f25da4SDaniel Mack { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, 1713f0b5e634SDaniel Mack { 0 } 1714f0b5e634SDaniel Mack }; 1715f0b5e634SDaniel Mack static struct procunit_value_info threed_enh_proc_info[] = { 171665f25da4SDaniel Mack { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 171765f25da4SDaniel Mack { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 }, 1718f0b5e634SDaniel Mack { 0 } 1719f0b5e634SDaniel Mack }; 1720f0b5e634SDaniel Mack static struct procunit_value_info reverb_proc_info[] = { 172165f25da4SDaniel Mack { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 172265f25da4SDaniel Mack { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, 172365f25da4SDaniel Mack { UAC_REVERB_TIME, "Time", USB_MIXER_U16 }, 172465f25da4SDaniel Mack { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 }, 1725f0b5e634SDaniel Mack { 0 } 1726f0b5e634SDaniel Mack }; 1727f0b5e634SDaniel Mack static struct procunit_value_info chorus_proc_info[] = { 172865f25da4SDaniel Mack { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 172965f25da4SDaniel Mack { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, 173065f25da4SDaniel Mack { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, 173165f25da4SDaniel Mack { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, 1732f0b5e634SDaniel Mack { 0 } 1733f0b5e634SDaniel Mack }; 1734f0b5e634SDaniel Mack static struct procunit_value_info dcr_proc_info[] = { 173565f25da4SDaniel Mack { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 173665f25da4SDaniel Mack { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 }, 173765f25da4SDaniel Mack { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 }, 173865f25da4SDaniel Mack { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, 173965f25da4SDaniel Mack { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 }, 174065f25da4SDaniel Mack { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 }, 1741f0b5e634SDaniel Mack { 0 } 1742f0b5e634SDaniel Mack }; 1743f0b5e634SDaniel Mack 1744f0b5e634SDaniel Mack static struct procunit_info procunits[] = { 174565f25da4SDaniel Mack { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info }, 174665f25da4SDaniel Mack { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info }, 174765f25da4SDaniel Mack { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info }, 174865f25da4SDaniel Mack { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info }, 174965f25da4SDaniel Mack { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info }, 175065f25da4SDaniel Mack { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info }, 1751f0b5e634SDaniel Mack { 0 }, 1752f0b5e634SDaniel Mack }; 1753f0b5e634SDaniel Mack /* 1754f0b5e634SDaniel Mack * predefined data for extension units 1755f0b5e634SDaniel Mack */ 1756f0b5e634SDaniel Mack static struct procunit_value_info clock_rate_xu_info[] = { 1757f0b5e634SDaniel Mack { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, 1758f0b5e634SDaniel Mack { 0 } 1759f0b5e634SDaniel Mack }; 1760f0b5e634SDaniel Mack static struct procunit_value_info clock_source_xu_info[] = { 1761f0b5e634SDaniel Mack { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, 1762f0b5e634SDaniel Mack { 0 } 1763f0b5e634SDaniel Mack }; 1764f0b5e634SDaniel Mack static struct procunit_value_info spdif_format_xu_info[] = { 1765f0b5e634SDaniel Mack { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, 1766f0b5e634SDaniel Mack { 0 } 1767f0b5e634SDaniel Mack }; 1768f0b5e634SDaniel Mack static struct procunit_value_info soft_limit_xu_info[] = { 1769f0b5e634SDaniel Mack { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, 1770f0b5e634SDaniel Mack { 0 } 1771f0b5e634SDaniel Mack }; 1772f0b5e634SDaniel Mack static struct procunit_info extunits[] = { 1773f0b5e634SDaniel Mack { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, 1774f0b5e634SDaniel Mack { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, 1775f0b5e634SDaniel Mack { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, 1776f0b5e634SDaniel Mack { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, 1777f0b5e634SDaniel Mack { 0 } 1778f0b5e634SDaniel Mack }; 17796bc170e4SDaniel Mack 1780f0b5e634SDaniel Mack /* 1781f0b5e634SDaniel Mack * build a processing/extension unit 1782f0b5e634SDaniel Mack */ 17836bc170e4SDaniel Mack static int build_audio_procunit(struct mixer_build *state, int unitid, 17846bc170e4SDaniel Mack void *raw_desc, struct procunit_info *list, 17856bc170e4SDaniel Mack char *name) 1786f0b5e634SDaniel Mack { 178799fc8645SDaniel Mack struct uac_processing_unit_descriptor *desc = raw_desc; 178899fc8645SDaniel Mack int num_ins = desc->bNrInPins; 1789f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1790f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1791f0b5e634SDaniel Mack int i, err, nameid, type, len; 1792f0b5e634SDaniel Mack struct procunit_info *info; 1793f0b5e634SDaniel Mack struct procunit_value_info *valinfo; 1794f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1795f0b5e634SDaniel Mack static struct procunit_value_info default_value_info[] = { 1796f0b5e634SDaniel Mack { 0x01, "Switch", USB_MIXER_BOOLEAN }, 1797f0b5e634SDaniel Mack { 0 } 1798f0b5e634SDaniel Mack }; 1799f0b5e634SDaniel Mack static struct procunit_info default_info = { 1800f0b5e634SDaniel Mack 0, NULL, default_value_info 1801f0b5e634SDaniel Mack }; 1802f0b5e634SDaniel Mack 180323caaf19SDaniel Mack if (desc->bLength < 13 || desc->bLength < 13 + num_ins || 180423caaf19SDaniel Mack desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { 18050ba41d91STakashi Iwai usb_audio_err(state->chip, "invalid %s descriptor (id %d)\n", name, unitid); 1806f0b5e634SDaniel Mack return -EINVAL; 1807f0b5e634SDaniel Mack } 1808f0b5e634SDaniel Mack 1809f0b5e634SDaniel Mack for (i = 0; i < num_ins; i++) { 181099fc8645SDaniel Mack if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) 1811f0b5e634SDaniel Mack return err; 1812f0b5e634SDaniel Mack } 1813f0b5e634SDaniel Mack 181499fc8645SDaniel Mack type = le16_to_cpu(desc->wProcessType); 1815f0b5e634SDaniel Mack for (info = list; info && info->type; info++) 1816f0b5e634SDaniel Mack if (info->type == type) 1817f0b5e634SDaniel Mack break; 1818f0b5e634SDaniel Mack if (!info || !info->type) 1819f0b5e634SDaniel Mack info = &default_info; 1820f0b5e634SDaniel Mack 1821f0b5e634SDaniel Mack for (valinfo = info->values; valinfo->control; valinfo++) { 182223caaf19SDaniel Mack __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); 182399fc8645SDaniel Mack 182499fc8645SDaniel Mack if (!(controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1)))) 1825f0b5e634SDaniel Mack continue; 1826f0b5e634SDaniel Mack map = find_map(state, unitid, valinfo->control); 1827f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1828f0b5e634SDaniel Mack continue; 1829f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1830a860d95fSDaniel Mack if (!cval) 1831f0b5e634SDaniel Mack return -ENOMEM; 18323360b84bSTakashi Iwai snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); 1833f0b5e634SDaniel Mack cval->control = valinfo->control; 1834f0b5e634SDaniel Mack cval->val_type = valinfo->val_type; 1835f0b5e634SDaniel Mack cval->channels = 1; 1836f0b5e634SDaniel Mack 1837f0b5e634SDaniel Mack /* get min/max values */ 183865f25da4SDaniel Mack if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) { 183923caaf19SDaniel Mack __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); 1840f0b5e634SDaniel Mack /* FIXME: hard-coded */ 1841f0b5e634SDaniel Mack cval->min = 1; 184299fc8645SDaniel Mack cval->max = control_spec[0]; 1843f0b5e634SDaniel Mack cval->res = 1; 1844f0b5e634SDaniel Mack cval->initialized = 1; 1845f0b5e634SDaniel Mack } else { 1846f0b5e634SDaniel Mack if (type == USB_XU_CLOCK_RATE) { 18476bc170e4SDaniel Mack /* 18486bc170e4SDaniel Mack * E-Mu USB 0404/0202/TrackerPre/0204 1849f0b5e634SDaniel Mack * samplerate control quirk 1850f0b5e634SDaniel Mack */ 1851f0b5e634SDaniel Mack cval->min = 0; 1852f0b5e634SDaniel Mack cval->max = 5; 1853f0b5e634SDaniel Mack cval->res = 1; 1854f0b5e634SDaniel Mack cval->initialized = 1; 1855f0b5e634SDaniel Mack } else 1856f0b5e634SDaniel Mack get_min_max(cval, valinfo->min_value); 1857f0b5e634SDaniel Mack } 1858f0b5e634SDaniel Mack 1859f0b5e634SDaniel Mack kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); 1860f0b5e634SDaniel Mack if (!kctl) { 1861f0b5e634SDaniel Mack kfree(cval); 1862f0b5e634SDaniel Mack return -ENOMEM; 1863f0b5e634SDaniel Mack } 1864eef90451SChris J Arges kctl->private_free = snd_usb_mixer_elem_free; 1865f0b5e634SDaniel Mack 18666bc170e4SDaniel Mack if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) { 1867f0b5e634SDaniel Mack /* nothing */ ; 18686bc170e4SDaniel Mack } else if (info->name) { 1869f0b5e634SDaniel Mack strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); 18706bc170e4SDaniel Mack } else { 187123caaf19SDaniel Mack nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); 1872f0b5e634SDaniel Mack len = 0; 1873f0b5e634SDaniel Mack if (nameid) 18746bc170e4SDaniel Mack len = snd_usb_copy_string_desc(state, nameid, 18756bc170e4SDaniel Mack kctl->id.name, 18766bc170e4SDaniel Mack sizeof(kctl->id.name)); 1877f0b5e634SDaniel Mack if (!len) 1878f0b5e634SDaniel Mack strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); 1879f0b5e634SDaniel Mack } 1880f0b5e634SDaniel Mack append_ctl_name(kctl, " "); 1881f0b5e634SDaniel Mack append_ctl_name(kctl, valinfo->suffix); 1882f0b5e634SDaniel Mack 18830ba41d91STakashi Iwai usb_audio_dbg(state->chip, 18840ba41d91STakashi Iwai "[%d] PU [%s] ch = %d, val = %d/%d\n", 18853360b84bSTakashi Iwai cval->head.id, kctl->id.name, cval->channels, 18866bc170e4SDaniel Mack cval->min, cval->max); 18876bc170e4SDaniel Mack 18883360b84bSTakashi Iwai err = snd_usb_mixer_add_control(&cval->head, kctl); 18896bc170e4SDaniel Mack if (err < 0) 1890f0b5e634SDaniel Mack return err; 1891f0b5e634SDaniel Mack } 1892f0b5e634SDaniel Mack return 0; 1893f0b5e634SDaniel Mack } 1894f0b5e634SDaniel Mack 18956bc170e4SDaniel Mack static int parse_audio_processing_unit(struct mixer_build *state, int unitid, 18966bc170e4SDaniel Mack void *raw_desc) 1897f0b5e634SDaniel Mack { 18986bc170e4SDaniel Mack return build_audio_procunit(state, unitid, raw_desc, 18996bc170e4SDaniel Mack procunits, "Processing Unit"); 1900f0b5e634SDaniel Mack } 1901f0b5e634SDaniel Mack 19026bc170e4SDaniel Mack static int parse_audio_extension_unit(struct mixer_build *state, int unitid, 19036bc170e4SDaniel Mack void *raw_desc) 1904f0b5e634SDaniel Mack { 19056bc170e4SDaniel Mack /* 19066bc170e4SDaniel Mack * Note that we parse extension units with processing unit descriptors. 19076bc170e4SDaniel Mack * That's ok as the layout is the same. 19086bc170e4SDaniel Mack */ 19096bc170e4SDaniel Mack return build_audio_procunit(state, unitid, raw_desc, 19106bc170e4SDaniel Mack extunits, "Extension Unit"); 1911f0b5e634SDaniel Mack } 1912f0b5e634SDaniel Mack 1913f0b5e634SDaniel Mack /* 1914f0b5e634SDaniel Mack * Selector Unit 1915f0b5e634SDaniel Mack */ 1916f0b5e634SDaniel Mack 19176bc170e4SDaniel Mack /* 19186bc170e4SDaniel Mack * info callback for selector unit 1919f0b5e634SDaniel Mack * use an enumerator type for routing 1920f0b5e634SDaniel Mack */ 19216bc170e4SDaniel Mack static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, 19226bc170e4SDaniel Mack struct snd_ctl_elem_info *uinfo) 1923f0b5e634SDaniel Mack { 1924f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 19252a1803a7SClemens Ladisch const char **itemlist = (const char **)kcontrol->private_value; 1926f0b5e634SDaniel Mack 1927f0b5e634SDaniel Mack if (snd_BUG_ON(!itemlist)) 1928f0b5e634SDaniel Mack return -EINVAL; 19292a1803a7SClemens Ladisch return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist); 1930f0b5e634SDaniel Mack } 1931f0b5e634SDaniel Mack 1932f0b5e634SDaniel Mack /* get callback for selector unit */ 19336bc170e4SDaniel Mack static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, 19346bc170e4SDaniel Mack struct snd_ctl_elem_value *ucontrol) 1935f0b5e634SDaniel Mack { 1936f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1937f0b5e634SDaniel Mack int val, err; 1938f0b5e634SDaniel Mack 193909414207SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &val); 1940f0b5e634SDaniel Mack if (err < 0) { 1941f0b5e634SDaniel Mack ucontrol->value.enumerated.item[0] = 0; 19425aeee342STakashi Iwai return filter_error(cval, err); 1943f0b5e634SDaniel Mack } 1944f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1945f0b5e634SDaniel Mack ucontrol->value.enumerated.item[0] = val; 1946f0b5e634SDaniel Mack return 0; 1947f0b5e634SDaniel Mack } 1948f0b5e634SDaniel Mack 1949f0b5e634SDaniel Mack /* put callback for selector unit */ 19506bc170e4SDaniel Mack static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, 19516bc170e4SDaniel Mack struct snd_ctl_elem_value *ucontrol) 1952f0b5e634SDaniel Mack { 1953f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1954f0b5e634SDaniel Mack int val, oval, err; 1955f0b5e634SDaniel Mack 195609414207SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &oval); 19575aeee342STakashi Iwai if (err < 0) 19585aeee342STakashi Iwai return filter_error(cval, err); 1959f0b5e634SDaniel Mack val = ucontrol->value.enumerated.item[0]; 1960f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1961f0b5e634SDaniel Mack if (val != oval) { 196209414207SDaniel Mack set_cur_ctl_value(cval, cval->control << 8, val); 1963f0b5e634SDaniel Mack return 1; 1964f0b5e634SDaniel Mack } 1965f0b5e634SDaniel Mack return 0; 1966f0b5e634SDaniel Mack } 1967f0b5e634SDaniel Mack 1968f0b5e634SDaniel Mack /* alsa control interface for selector unit */ 1969f0b5e634SDaniel Mack static struct snd_kcontrol_new mixer_selectunit_ctl = { 1970f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1971f0b5e634SDaniel Mack .name = "", /* will be filled later */ 1972f0b5e634SDaniel Mack .info = mixer_ctl_selector_info, 1973f0b5e634SDaniel Mack .get = mixer_ctl_selector_get, 1974f0b5e634SDaniel Mack .put = mixer_ctl_selector_put, 1975f0b5e634SDaniel Mack }; 1976f0b5e634SDaniel Mack 19776bc170e4SDaniel Mack /* 19786bc170e4SDaniel Mack * private free callback. 1979f0b5e634SDaniel Mack * free both private_data and private_value 1980f0b5e634SDaniel Mack */ 1981f0b5e634SDaniel Mack static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) 1982f0b5e634SDaniel Mack { 1983f0b5e634SDaniel Mack int i, num_ins = 0; 1984f0b5e634SDaniel Mack 1985f0b5e634SDaniel Mack if (kctl->private_data) { 1986f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kctl->private_data; 1987f0b5e634SDaniel Mack num_ins = cval->max; 1988f0b5e634SDaniel Mack kfree(cval); 1989f0b5e634SDaniel Mack kctl->private_data = NULL; 1990f0b5e634SDaniel Mack } 1991f0b5e634SDaniel Mack if (kctl->private_value) { 1992f0b5e634SDaniel Mack char **itemlist = (char **)kctl->private_value; 1993f0b5e634SDaniel Mack for (i = 0; i < num_ins; i++) 1994f0b5e634SDaniel Mack kfree(itemlist[i]); 1995f0b5e634SDaniel Mack kfree(itemlist); 1996f0b5e634SDaniel Mack kctl->private_value = 0; 1997f0b5e634SDaniel Mack } 1998f0b5e634SDaniel Mack } 1999f0b5e634SDaniel Mack 2000f0b5e634SDaniel Mack /* 2001f0b5e634SDaniel Mack * parse a selector unit 2002f0b5e634SDaniel Mack */ 20036bc170e4SDaniel Mack static int parse_audio_selector_unit(struct mixer_build *state, int unitid, 20046bc170e4SDaniel Mack void *raw_desc) 2005f0b5e634SDaniel Mack { 200699fc8645SDaniel Mack struct uac_selector_unit_descriptor *desc = raw_desc; 2007f0b5e634SDaniel Mack unsigned int i, nameid, len; 2008f0b5e634SDaniel Mack int err; 2009f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 2010f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 2011f0b5e634SDaniel Mack const struct usbmix_name_map *map; 2012f0b5e634SDaniel Mack char **namelist; 2013f0b5e634SDaniel Mack 201499fc8645SDaniel Mack if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) { 20150ba41d91STakashi Iwai usb_audio_err(state->chip, 20160ba41d91STakashi Iwai "invalid SELECTOR UNIT descriptor %d\n", unitid); 2017f0b5e634SDaniel Mack return -EINVAL; 2018f0b5e634SDaniel Mack } 2019f0b5e634SDaniel Mack 202099fc8645SDaniel Mack for (i = 0; i < desc->bNrInPins; i++) { 202199fc8645SDaniel Mack if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) 2022f0b5e634SDaniel Mack return err; 2023f0b5e634SDaniel Mack } 2024f0b5e634SDaniel Mack 202599fc8645SDaniel Mack if (desc->bNrInPins == 1) /* only one ? nonsense! */ 2026f0b5e634SDaniel Mack return 0; 2027f0b5e634SDaniel Mack 2028f0b5e634SDaniel Mack map = find_map(state, unitid, 0); 2029f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 2030f0b5e634SDaniel Mack return 0; 2031f0b5e634SDaniel Mack 2032f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 2033a860d95fSDaniel Mack if (!cval) 2034f0b5e634SDaniel Mack return -ENOMEM; 20353360b84bSTakashi Iwai snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); 2036f0b5e634SDaniel Mack cval->val_type = USB_MIXER_U8; 2037f0b5e634SDaniel Mack cval->channels = 1; 2038f0b5e634SDaniel Mack cval->min = 1; 203999fc8645SDaniel Mack cval->max = desc->bNrInPins; 2040f0b5e634SDaniel Mack cval->res = 1; 2041f0b5e634SDaniel Mack cval->initialized = 1; 2042f0b5e634SDaniel Mack 2043a358a0efSJohan Rastén if (state->mixer->protocol == UAC_VERSION_1) 204409414207SDaniel Mack cval->control = 0; 2045a358a0efSJohan Rastén else /* UAC_VERSION_2 */ 2046a358a0efSJohan Rastén cval->control = (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) ? 2047a358a0efSJohan Rastén UAC2_CX_CLOCK_SELECTOR : UAC2_SU_SELECTOR; 204809414207SDaniel Mack 204999fc8645SDaniel Mack namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); 2050f0b5e634SDaniel Mack if (!namelist) { 2051f0b5e634SDaniel Mack kfree(cval); 2052f0b5e634SDaniel Mack return -ENOMEM; 2053f0b5e634SDaniel Mack } 2054f0b5e634SDaniel Mack #define MAX_ITEM_NAME_LEN 64 205599fc8645SDaniel Mack for (i = 0; i < desc->bNrInPins; i++) { 2056f0b5e634SDaniel Mack struct usb_audio_term iterm; 2057f0b5e634SDaniel Mack len = 0; 2058f0b5e634SDaniel Mack namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); 2059f0b5e634SDaniel Mack if (!namelist[i]) { 2060f0b5e634SDaniel Mack while (i--) 2061f0b5e634SDaniel Mack kfree(namelist[i]); 2062f0b5e634SDaniel Mack kfree(namelist); 2063f0b5e634SDaniel Mack kfree(cval); 2064f0b5e634SDaniel Mack return -ENOMEM; 2065f0b5e634SDaniel Mack } 2066f0b5e634SDaniel Mack len = check_mapped_selector_name(state, unitid, i, namelist[i], 2067f0b5e634SDaniel Mack MAX_ITEM_NAME_LEN); 206899fc8645SDaniel Mack if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) 2069f0b5e634SDaniel Mack len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); 2070f0b5e634SDaniel Mack if (! len) 2071af831eefSMasanari Iida sprintf(namelist[i], "Input %u", i); 2072f0b5e634SDaniel Mack } 2073f0b5e634SDaniel Mack 2074f0b5e634SDaniel Mack kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); 2075f0b5e634SDaniel Mack if (! kctl) { 20760ba41d91STakashi Iwai usb_audio_err(state->chip, "cannot malloc kcontrol\n"); 2077f0b5e634SDaniel Mack kfree(namelist); 2078f0b5e634SDaniel Mack kfree(cval); 2079f0b5e634SDaniel Mack return -ENOMEM; 2080f0b5e634SDaniel Mack } 2081f0b5e634SDaniel Mack kctl->private_value = (unsigned long)namelist; 2082f0b5e634SDaniel Mack kctl->private_free = usb_mixer_selector_elem_free; 2083f0b5e634SDaniel Mack 208499fc8645SDaniel Mack nameid = uac_selector_unit_iSelector(desc); 2085f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 2086f0b5e634SDaniel Mack if (len) 2087f0b5e634SDaniel Mack ; 2088f0b5e634SDaniel Mack else if (nameid) 20896bc170e4SDaniel Mack snd_usb_copy_string_desc(state, nameid, kctl->id.name, 20906bc170e4SDaniel Mack sizeof(kctl->id.name)); 2091f0b5e634SDaniel Mack else { 2092f0b5e634SDaniel Mack len = get_term_name(state, &state->oterm, 2093f0b5e634SDaniel Mack kctl->id.name, sizeof(kctl->id.name), 0); 2094f0b5e634SDaniel Mack if (!len) 2095f0b5e634SDaniel Mack strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); 2096f0b5e634SDaniel Mack 209709414207SDaniel Mack if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) 209809414207SDaniel Mack append_ctl_name(kctl, " Clock Source"); 209909414207SDaniel Mack else if ((state->oterm.type & 0xff00) == 0x0100) 2100f0b5e634SDaniel Mack append_ctl_name(kctl, " Capture Source"); 2101f0b5e634SDaniel Mack else 2102f0b5e634SDaniel Mack append_ctl_name(kctl, " Playback Source"); 2103f0b5e634SDaniel Mack } 2104f0b5e634SDaniel Mack 21050ba41d91STakashi Iwai usb_audio_dbg(state->chip, "[%d] SU [%s] items = %d\n", 21063360b84bSTakashi Iwai cval->head.id, kctl->id.name, desc->bNrInPins); 21073360b84bSTakashi Iwai return snd_usb_mixer_add_control(&cval->head, kctl); 2108f0b5e634SDaniel Mack } 2109f0b5e634SDaniel Mack 2110f0b5e634SDaniel Mack /* 2111f0b5e634SDaniel Mack * parse an audio unit recursively 2112f0b5e634SDaniel Mack */ 2113f0b5e634SDaniel Mack 2114f0b5e634SDaniel Mack static int parse_audio_unit(struct mixer_build *state, int unitid) 2115f0b5e634SDaniel Mack { 2116f0b5e634SDaniel Mack unsigned char *p1; 2117f0b5e634SDaniel Mack 2118f0b5e634SDaniel Mack if (test_and_set_bit(unitid, state->unitbitmap)) 2119f0b5e634SDaniel Mack return 0; /* the unit already visited */ 2120f0b5e634SDaniel Mack 2121f0b5e634SDaniel Mack p1 = find_audio_control_unit(state, unitid); 2122f0b5e634SDaniel Mack if (!p1) { 21230ba41d91STakashi Iwai usb_audio_err(state->chip, "unit %d not found!\n", unitid); 2124f0b5e634SDaniel Mack return -EINVAL; 2125f0b5e634SDaniel Mack } 2126f0b5e634SDaniel Mack 2127f0b5e634SDaniel Mack switch (p1[2]) { 2128f0b5e634SDaniel Mack case UAC_INPUT_TERMINAL: 212909414207SDaniel Mack case UAC2_CLOCK_SOURCE: 2130f0b5e634SDaniel Mack return 0; /* NOP */ 2131f0b5e634SDaniel Mack case UAC_MIXER_UNIT: 2132f0b5e634SDaniel Mack return parse_audio_mixer_unit(state, unitid, p1); 2133f0b5e634SDaniel Mack case UAC_SELECTOR_UNIT: 213409414207SDaniel Mack case UAC2_CLOCK_SELECTOR: 2135f0b5e634SDaniel Mack return parse_audio_selector_unit(state, unitid, p1); 2136f0b5e634SDaniel Mack case UAC_FEATURE_UNIT: 2137f0b5e634SDaniel Mack return parse_audio_feature_unit(state, unitid, p1); 213869da9bcbSDaniel Mack case UAC1_PROCESSING_UNIT: 213923caaf19SDaniel Mack /* UAC2_EFFECT_UNIT has the same value */ 214023caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) 2141f0b5e634SDaniel Mack return parse_audio_processing_unit(state, unitid, p1); 214223caaf19SDaniel Mack else 214323caaf19SDaniel Mack return 0; /* FIXME - effect units not implemented yet */ 214469da9bcbSDaniel Mack case UAC1_EXTENSION_UNIT: 214523caaf19SDaniel Mack /* UAC2_PROCESSING_UNIT_V2 has the same value */ 214623caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) 2147f0b5e634SDaniel Mack return parse_audio_extension_unit(state, unitid, p1); 214823caaf19SDaniel Mack else /* UAC_VERSION_2 */ 214923caaf19SDaniel Mack return parse_audio_processing_unit(state, unitid, p1); 215061ac5130STorstein Hegge case UAC2_EXTENSION_UNIT_V2: 215161ac5130STorstein Hegge return parse_audio_extension_unit(state, unitid, p1); 2152f0b5e634SDaniel Mack default: 21530ba41d91STakashi Iwai usb_audio_err(state->chip, 21540ba41d91STakashi Iwai "unit %u: unexpected type 0x%02x\n", unitid, p1[2]); 2155f0b5e634SDaniel Mack return -EINVAL; 2156f0b5e634SDaniel Mack } 2157f0b5e634SDaniel Mack } 2158f0b5e634SDaniel Mack 2159f0b5e634SDaniel Mack static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) 2160f0b5e634SDaniel Mack { 2161f0b5e634SDaniel Mack kfree(mixer->id_elems); 2162f0b5e634SDaniel Mack if (mixer->urb) { 2163f0b5e634SDaniel Mack kfree(mixer->urb->transfer_buffer); 2164f0b5e634SDaniel Mack usb_free_urb(mixer->urb); 2165f0b5e634SDaniel Mack } 2166f0b5e634SDaniel Mack usb_free_urb(mixer->rc_urb); 2167f0b5e634SDaniel Mack kfree(mixer->rc_setup_packet); 2168f0b5e634SDaniel Mack kfree(mixer); 2169f0b5e634SDaniel Mack } 2170f0b5e634SDaniel Mack 2171f0b5e634SDaniel Mack static int snd_usb_mixer_dev_free(struct snd_device *device) 2172f0b5e634SDaniel Mack { 2173f0b5e634SDaniel Mack struct usb_mixer_interface *mixer = device->device_data; 2174f0b5e634SDaniel Mack snd_usb_mixer_free(mixer); 2175f0b5e634SDaniel Mack return 0; 2176f0b5e634SDaniel Mack } 2177f0b5e634SDaniel Mack 2178f0b5e634SDaniel Mack /* 2179f0b5e634SDaniel Mack * create mixer controls 2180f0b5e634SDaniel Mack * 2181f0b5e634SDaniel Mack * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers 2182f0b5e634SDaniel Mack */ 2183f0b5e634SDaniel Mack static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) 2184f0b5e634SDaniel Mack { 2185f0b5e634SDaniel Mack struct mixer_build state; 2186f0b5e634SDaniel Mack int err; 2187f0b5e634SDaniel Mack const struct usbmix_ctl_map *map; 218823caaf19SDaniel Mack void *p; 2189f0b5e634SDaniel Mack 2190f0b5e634SDaniel Mack memset(&state, 0, sizeof(state)); 2191f0b5e634SDaniel Mack state.chip = mixer->chip; 2192f0b5e634SDaniel Mack state.mixer = mixer; 21931faa5d07SDaniel Mack state.buffer = mixer->hostif->extra; 21941faa5d07SDaniel Mack state.buflen = mixer->hostif->extralen; 2195f0b5e634SDaniel Mack 2196f0b5e634SDaniel Mack /* check the mapping table */ 2197f0b5e634SDaniel Mack for (map = usbmix_ctl_maps; map->id; map++) { 2198f0b5e634SDaniel Mack if (map->id == state.chip->usb_id) { 2199f0b5e634SDaniel Mack state.map = map->map; 2200f0b5e634SDaniel Mack state.selector_map = map->selector_map; 2201f0b5e634SDaniel Mack mixer->ignore_ctl_error = map->ignore_ctl_error; 2202f0b5e634SDaniel Mack break; 2203f0b5e634SDaniel Mack } 2204f0b5e634SDaniel Mack } 2205f0b5e634SDaniel Mack 220623caaf19SDaniel Mack p = NULL; 22076bc170e4SDaniel Mack while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, 22086bc170e4SDaniel Mack mixer->hostif->extralen, 22091faa5d07SDaniel Mack p, UAC_OUTPUT_TERMINAL)) != NULL) { 221023caaf19SDaniel Mack if (mixer->protocol == UAC_VERSION_1) { 221169da9bcbSDaniel Mack struct uac1_output_terminal_descriptor *desc = p; 221223caaf19SDaniel Mack 221323caaf19SDaniel Mack if (desc->bLength < sizeof(*desc)) 221423caaf19SDaniel Mack continue; /* invalid descriptor? */ 22156bc170e4SDaniel Mack /* mark terminal ID as visited */ 22166bc170e4SDaniel Mack set_bit(desc->bTerminalID, state.unitbitmap); 221723caaf19SDaniel Mack state.oterm.id = desc->bTerminalID; 221823caaf19SDaniel Mack state.oterm.type = le16_to_cpu(desc->wTerminalType); 221923caaf19SDaniel Mack state.oterm.name = desc->iTerminal; 222023caaf19SDaniel Mack err = parse_audio_unit(&state, desc->bSourceID); 222183ea5d18SDaniel Mack if (err < 0 && err != -EINVAL) 222223caaf19SDaniel Mack return err; 222323caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 222423caaf19SDaniel Mack struct uac2_output_terminal_descriptor *desc = p; 222523caaf19SDaniel Mack 222623caaf19SDaniel Mack if (desc->bLength < sizeof(*desc)) 2227f0b5e634SDaniel Mack continue; /* invalid descriptor? */ 22286bc170e4SDaniel Mack /* mark terminal ID as visited */ 22296bc170e4SDaniel Mack set_bit(desc->bTerminalID, state.unitbitmap); 2230f0b5e634SDaniel Mack state.oterm.id = desc->bTerminalID; 2231f0b5e634SDaniel Mack state.oterm.type = le16_to_cpu(desc->wTerminalType); 2232f0b5e634SDaniel Mack state.oterm.name = desc->iTerminal; 2233f0b5e634SDaniel Mack err = parse_audio_unit(&state, desc->bSourceID); 223483ea5d18SDaniel Mack if (err < 0 && err != -EINVAL) 2235f0b5e634SDaniel Mack return err; 223609414207SDaniel Mack 22376bc170e4SDaniel Mack /* 22386bc170e4SDaniel Mack * For UAC2, use the same approach to also add the 22396bc170e4SDaniel Mack * clock selectors 22406bc170e4SDaniel Mack */ 224109414207SDaniel Mack err = parse_audio_unit(&state, desc->bCSourceID); 224283ea5d18SDaniel Mack if (err < 0 && err != -EINVAL) 224309414207SDaniel Mack return err; 2244f0b5e634SDaniel Mack } 224523caaf19SDaniel Mack } 224623caaf19SDaniel Mack 2247f0b5e634SDaniel Mack return 0; 2248f0b5e634SDaniel Mack } 2249f0b5e634SDaniel Mack 2250f0b5e634SDaniel Mack void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) 2251f0b5e634SDaniel Mack { 22523360b84bSTakashi Iwai struct usb_mixer_elem_list *list; 2253f0b5e634SDaniel Mack 22543360b84bSTakashi Iwai for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) 2255f0b5e634SDaniel Mack snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 22563360b84bSTakashi Iwai &list->kctl->id); 2257f0b5e634SDaniel Mack } 2258f0b5e634SDaniel Mack 2259f0b5e634SDaniel Mack static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, 22603360b84bSTakashi Iwai struct usb_mixer_elem_list *list) 2261f0b5e634SDaniel Mack { 22623360b84bSTakashi Iwai struct usb_mixer_elem_info *cval = (struct usb_mixer_elem_info *)list; 2263f0b5e634SDaniel Mack static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN", 2264f0b5e634SDaniel Mack "S8", "U8", "S16", "U16"}; 2265f0b5e634SDaniel Mack snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " 22663360b84bSTakashi Iwai "channels=%i, type=\"%s\"\n", cval->head.id, 2267f0b5e634SDaniel Mack cval->control, cval->cmask, cval->channels, 2268f0b5e634SDaniel Mack val_types[cval->val_type]); 2269f0b5e634SDaniel Mack snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", 2270f0b5e634SDaniel Mack cval->min, cval->max, cval->dBmin, cval->dBmax); 2271f0b5e634SDaniel Mack } 2272f0b5e634SDaniel Mack 2273f0b5e634SDaniel Mack static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, 2274f0b5e634SDaniel Mack struct snd_info_buffer *buffer) 2275f0b5e634SDaniel Mack { 2276f0b5e634SDaniel Mack struct snd_usb_audio *chip = entry->private_data; 2277f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 22783360b84bSTakashi Iwai struct usb_mixer_elem_list *list; 2279f0b5e634SDaniel Mack int unitid; 2280f0b5e634SDaniel Mack 2281f0b5e634SDaniel Mack list_for_each_entry(mixer, &chip->mixer_list, list) { 2282f0b5e634SDaniel Mack snd_iprintf(buffer, 2283f0b5e634SDaniel Mack "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", 22843d8d4dcfSDaniel Mack chip->usb_id, snd_usb_ctrl_intf(chip), 2285f0b5e634SDaniel Mack mixer->ignore_ctl_error); 2286f0b5e634SDaniel Mack snd_iprintf(buffer, "Card: %s\n", chip->card->longname); 2287f0b5e634SDaniel Mack for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { 22883360b84bSTakashi Iwai for (list = mixer->id_elems[unitid]; list; 22893360b84bSTakashi Iwai list = list->next_id_elem) { 22903360b84bSTakashi Iwai snd_iprintf(buffer, " Unit: %i\n", list->id); 22913360b84bSTakashi Iwai if (list->kctl) 22923360b84bSTakashi Iwai snd_iprintf(buffer, 22933360b84bSTakashi Iwai " Control: name=\"%s\", index=%i\n", 22943360b84bSTakashi Iwai list->kctl->id.name, 22953360b84bSTakashi Iwai list->kctl->id.index); 22963360b84bSTakashi Iwai if (list->dump) 22973360b84bSTakashi Iwai list->dump(buffer, list); 22983360b84bSTakashi Iwai } 2299f0b5e634SDaniel Mack } 2300f0b5e634SDaniel Mack } 2301f0b5e634SDaniel Mack } 2302f0b5e634SDaniel Mack 2303e213e9cfSDaniel Mack static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, 2304e213e9cfSDaniel Mack int attribute, int value, int index) 2305e213e9cfSDaniel Mack { 23063360b84bSTakashi Iwai struct usb_mixer_elem_list *list; 2307e213e9cfSDaniel Mack __u8 unitid = (index >> 8) & 0xff; 2308e213e9cfSDaniel Mack __u8 control = (value >> 8) & 0xff; 2309e213e9cfSDaniel Mack __u8 channel = value & 0xff; 2310e213e9cfSDaniel Mack 2311e213e9cfSDaniel Mack if (channel >= MAX_CHANNELS) { 23120ba41d91STakashi Iwai usb_audio_dbg(mixer->chip, 23130ba41d91STakashi Iwai "%s(): bogus channel number %d\n", 2314e213e9cfSDaniel Mack __func__, channel); 2315e213e9cfSDaniel Mack return; 2316e213e9cfSDaniel Mack } 2317e213e9cfSDaniel Mack 23183360b84bSTakashi Iwai for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) { 23193360b84bSTakashi Iwai struct usb_mixer_elem_info *info; 23203360b84bSTakashi Iwai 23213360b84bSTakashi Iwai if (!list->kctl) 23223360b84bSTakashi Iwai continue; 23233360b84bSTakashi Iwai 23243360b84bSTakashi Iwai info = (struct usb_mixer_elem_info *)list; 2325e213e9cfSDaniel Mack if (info->control != control) 2326e213e9cfSDaniel Mack continue; 2327e213e9cfSDaniel Mack 2328e213e9cfSDaniel Mack switch (attribute) { 2329e213e9cfSDaniel Mack case UAC2_CS_CUR: 2330e213e9cfSDaniel Mack /* invalidate cache, so the value is read from the device */ 2331e213e9cfSDaniel Mack if (channel) 2332e213e9cfSDaniel Mack info->cached &= ~(1 << channel); 2333e213e9cfSDaniel Mack else /* master channel */ 2334e213e9cfSDaniel Mack info->cached = 0; 2335e213e9cfSDaniel Mack 2336e213e9cfSDaniel Mack snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 23373360b84bSTakashi Iwai &info->head.kctl->id); 2338e213e9cfSDaniel Mack break; 2339e213e9cfSDaniel Mack 2340e213e9cfSDaniel Mack case UAC2_CS_RANGE: 2341e213e9cfSDaniel Mack /* TODO */ 2342e213e9cfSDaniel Mack break; 2343e213e9cfSDaniel Mack 2344e213e9cfSDaniel Mack case UAC2_CS_MEM: 2345e213e9cfSDaniel Mack /* TODO */ 2346e213e9cfSDaniel Mack break; 2347e213e9cfSDaniel Mack 2348e213e9cfSDaniel Mack default: 23490ba41d91STakashi Iwai usb_audio_dbg(mixer->chip, 23500ba41d91STakashi Iwai "unknown attribute %d in interrupt\n", 2351e213e9cfSDaniel Mack attribute); 2352e213e9cfSDaniel Mack break; 2353e213e9cfSDaniel Mack } /* switch */ 2354e213e9cfSDaniel Mack } 2355e213e9cfSDaniel Mack } 2356e213e9cfSDaniel Mack 2357e213e9cfSDaniel Mack static void snd_usb_mixer_interrupt(struct urb *urb) 2358f0b5e634SDaniel Mack { 2359f0b5e634SDaniel Mack struct usb_mixer_interface *mixer = urb->context; 2360e213e9cfSDaniel Mack int len = urb->actual_length; 2361edf7de31SOliver Neukum int ustatus = urb->status; 2362f0b5e634SDaniel Mack 2363edf7de31SOliver Neukum if (ustatus != 0) 2364e213e9cfSDaniel Mack goto requeue; 2365f0b5e634SDaniel Mack 2366e213e9cfSDaniel Mack if (mixer->protocol == UAC_VERSION_1) { 2367e213e9cfSDaniel Mack struct uac1_status_word *status; 2368e213e9cfSDaniel Mack 2369e213e9cfSDaniel Mack for (status = urb->transfer_buffer; 2370e213e9cfSDaniel Mack len >= sizeof(*status); 2371e213e9cfSDaniel Mack len -= sizeof(*status), status++) { 23720ba41d91STakashi Iwai dev_dbg(&urb->dev->dev, "status interrupt: %02x %02x\n", 2373e213e9cfSDaniel Mack status->bStatusType, 2374e213e9cfSDaniel Mack status->bOriginator); 2375e213e9cfSDaniel Mack 2376f0b5e634SDaniel Mack /* ignore any notifications not from the control interface */ 2377e213e9cfSDaniel Mack if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != 2378e213e9cfSDaniel Mack UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) 2379f0b5e634SDaniel Mack continue; 2380e213e9cfSDaniel Mack 2381e213e9cfSDaniel Mack if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) 2382e213e9cfSDaniel Mack snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); 2383f0b5e634SDaniel Mack else 2384e213e9cfSDaniel Mack snd_usb_mixer_notify_id(mixer, status->bOriginator); 2385e213e9cfSDaniel Mack } 2386e213e9cfSDaniel Mack } else { /* UAC_VERSION_2 */ 2387e213e9cfSDaniel Mack struct uac2_interrupt_data_msg *msg; 2388e213e9cfSDaniel Mack 2389e213e9cfSDaniel Mack for (msg = urb->transfer_buffer; 2390e213e9cfSDaniel Mack len >= sizeof(*msg); 2391e213e9cfSDaniel Mack len -= sizeof(*msg), msg++) { 2392e213e9cfSDaniel Mack /* drop vendor specific and endpoint requests */ 2393e213e9cfSDaniel Mack if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || 2394e213e9cfSDaniel Mack (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) 2395e213e9cfSDaniel Mack continue; 2396e213e9cfSDaniel Mack 2397e213e9cfSDaniel Mack snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, 2398e213e9cfSDaniel Mack le16_to_cpu(msg->wValue), 2399e213e9cfSDaniel Mack le16_to_cpu(msg->wIndex)); 2400f0b5e634SDaniel Mack } 2401f0b5e634SDaniel Mack } 2402e213e9cfSDaniel Mack 2403e213e9cfSDaniel Mack requeue: 24046bc170e4SDaniel Mack if (ustatus != -ENOENT && 24056bc170e4SDaniel Mack ustatus != -ECONNRESET && 24066bc170e4SDaniel Mack ustatus != -ESHUTDOWN) { 2407f0b5e634SDaniel Mack urb->dev = mixer->chip->dev; 2408f0b5e634SDaniel Mack usb_submit_urb(urb, GFP_ATOMIC); 2409f0b5e634SDaniel Mack } 2410f0b5e634SDaniel Mack } 2411f0b5e634SDaniel Mack 2412f0b5e634SDaniel Mack /* create the handler for the optional status interrupt endpoint */ 2413f0b5e634SDaniel Mack static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) 2414f0b5e634SDaniel Mack { 2415f0b5e634SDaniel Mack struct usb_endpoint_descriptor *ep; 2416f0b5e634SDaniel Mack void *transfer_buffer; 2417f0b5e634SDaniel Mack int buffer_length; 2418f0b5e634SDaniel Mack unsigned int epnum; 2419f0b5e634SDaniel Mack 2420f0b5e634SDaniel Mack /* we need one interrupt input endpoint */ 24211faa5d07SDaniel Mack if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) 2422f0b5e634SDaniel Mack return 0; 24231faa5d07SDaniel Mack ep = get_endpoint(mixer->hostif, 0); 2424f0b5e634SDaniel Mack if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) 2425f0b5e634SDaniel Mack return 0; 2426f0b5e634SDaniel Mack 2427f0b5e634SDaniel Mack epnum = usb_endpoint_num(ep); 2428f0b5e634SDaniel Mack buffer_length = le16_to_cpu(ep->wMaxPacketSize); 2429f0b5e634SDaniel Mack transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); 2430f0b5e634SDaniel Mack if (!transfer_buffer) 2431f0b5e634SDaniel Mack return -ENOMEM; 2432f0b5e634SDaniel Mack mixer->urb = usb_alloc_urb(0, GFP_KERNEL); 2433f0b5e634SDaniel Mack if (!mixer->urb) { 2434f0b5e634SDaniel Mack kfree(transfer_buffer); 2435f0b5e634SDaniel Mack return -ENOMEM; 2436f0b5e634SDaniel Mack } 2437f0b5e634SDaniel Mack usb_fill_int_urb(mixer->urb, mixer->chip->dev, 2438f0b5e634SDaniel Mack usb_rcvintpipe(mixer->chip->dev, epnum), 2439f0b5e634SDaniel Mack transfer_buffer, buffer_length, 2440e213e9cfSDaniel Mack snd_usb_mixer_interrupt, mixer, ep->bInterval); 2441f0b5e634SDaniel Mack usb_submit_urb(mixer->urb, GFP_KERNEL); 2442f0b5e634SDaniel Mack return 0; 2443f0b5e634SDaniel Mack } 2444f0b5e634SDaniel Mack 2445f0b5e634SDaniel Mack int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 2446f0b5e634SDaniel Mack int ignore_error) 2447f0b5e634SDaniel Mack { 2448f0b5e634SDaniel Mack static struct snd_device_ops dev_ops = { 2449f0b5e634SDaniel Mack .dev_free = snd_usb_mixer_dev_free 2450f0b5e634SDaniel Mack }; 2451f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 2452f0b5e634SDaniel Mack struct snd_info_entry *entry; 245323caaf19SDaniel Mack int err; 2454f0b5e634SDaniel Mack 2455f0b5e634SDaniel Mack strcpy(chip->card->mixername, "USB Mixer"); 2456f0b5e634SDaniel Mack 2457f0b5e634SDaniel Mack mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); 2458f0b5e634SDaniel Mack if (!mixer) 2459f0b5e634SDaniel Mack return -ENOMEM; 2460f0b5e634SDaniel Mack mixer->chip = chip; 2461f0b5e634SDaniel Mack mixer->ignore_ctl_error = ignore_error; 2462f0b5e634SDaniel Mack mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), 2463f0b5e634SDaniel Mack GFP_KERNEL); 2464f0b5e634SDaniel Mack if (!mixer->id_elems) { 2465f0b5e634SDaniel Mack kfree(mixer); 2466f0b5e634SDaniel Mack return -ENOMEM; 2467f0b5e634SDaniel Mack } 2468f0b5e634SDaniel Mack 24691faa5d07SDaniel Mack mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; 24701faa5d07SDaniel Mack switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { 2471a2acad82SClemens Ladisch case UAC_VERSION_1: 2472a2acad82SClemens Ladisch default: 2473a2acad82SClemens Ladisch mixer->protocol = UAC_VERSION_1; 2474a2acad82SClemens Ladisch break; 2475a2acad82SClemens Ladisch case UAC_VERSION_2: 2476a2acad82SClemens Ladisch mixer->protocol = UAC_VERSION_2; 2477a2acad82SClemens Ladisch break; 2478a2acad82SClemens Ladisch } 2479f0b5e634SDaniel Mack 2480f0b5e634SDaniel Mack if ((err = snd_usb_mixer_controls(mixer)) < 0 || 2481f0b5e634SDaniel Mack (err = snd_usb_mixer_status_create(mixer)) < 0) 2482f0b5e634SDaniel Mack goto _error; 2483f0b5e634SDaniel Mack 2484f0b5e634SDaniel Mack snd_usb_mixer_apply_create_quirk(mixer); 2485f0b5e634SDaniel Mack 24869cbb2808STakashi Iwai err = snd_device_new(chip->card, SNDRV_DEV_CODEC, mixer, &dev_ops); 2487f0b5e634SDaniel Mack if (err < 0) 2488f0b5e634SDaniel Mack goto _error; 2489f0b5e634SDaniel Mack 2490f0b5e634SDaniel Mack if (list_empty(&chip->mixer_list) && 2491f0b5e634SDaniel Mack !snd_card_proc_new(chip->card, "usbmixer", &entry)) 2492f0b5e634SDaniel Mack snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read); 2493f0b5e634SDaniel Mack 2494f0b5e634SDaniel Mack list_add(&mixer->list, &chip->mixer_list); 2495f0b5e634SDaniel Mack return 0; 2496f0b5e634SDaniel Mack 2497f0b5e634SDaniel Mack _error: 2498f0b5e634SDaniel Mack snd_usb_mixer_free(mixer); 2499f0b5e634SDaniel Mack return err; 2500f0b5e634SDaniel Mack } 2501f0b5e634SDaniel Mack 2502a6cece9dSTakashi Iwai void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) 2503f0b5e634SDaniel Mack { 2504f0b5e634SDaniel Mack usb_kill_urb(mixer->urb); 2505f0b5e634SDaniel Mack usb_kill_urb(mixer->rc_urb); 2506f0b5e634SDaniel Mack } 2507400362f1STakashi Iwai 2508400362f1STakashi Iwai #ifdef CONFIG_PM 2509400362f1STakashi Iwai /* stop any bus activity of a mixer */ 2510400362f1STakashi Iwai static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) 2511400362f1STakashi Iwai { 2512400362f1STakashi Iwai usb_kill_urb(mixer->urb); 2513400362f1STakashi Iwai usb_kill_urb(mixer->rc_urb); 2514400362f1STakashi Iwai } 2515400362f1STakashi Iwai 2516400362f1STakashi Iwai static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) 2517400362f1STakashi Iwai { 2518400362f1STakashi Iwai int err; 2519400362f1STakashi Iwai 2520400362f1STakashi Iwai if (mixer->urb) { 2521400362f1STakashi Iwai err = usb_submit_urb(mixer->urb, GFP_NOIO); 2522400362f1STakashi Iwai if (err < 0) 2523400362f1STakashi Iwai return err; 2524400362f1STakashi Iwai } 2525400362f1STakashi Iwai 2526400362f1STakashi Iwai return 0; 2527400362f1STakashi Iwai } 2528400362f1STakashi Iwai 2529400362f1STakashi Iwai int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer) 2530400362f1STakashi Iwai { 2531400362f1STakashi Iwai snd_usb_mixer_inactivate(mixer); 2532400362f1STakashi Iwai return 0; 2533400362f1STakashi Iwai } 2534400362f1STakashi Iwai 25353360b84bSTakashi Iwai static int restore_mixer_value(struct usb_mixer_elem_list *list) 2536400362f1STakashi Iwai { 25373360b84bSTakashi Iwai struct usb_mixer_elem_info *cval = (struct usb_mixer_elem_info *)list; 2538400362f1STakashi Iwai int c, err, idx; 2539400362f1STakashi Iwai 2540400362f1STakashi Iwai if (cval->cmask) { 2541400362f1STakashi Iwai idx = 0; 2542400362f1STakashi Iwai for (c = 0; c < MAX_CHANNELS; c++) { 2543400362f1STakashi Iwai if (!(cval->cmask & (1 << c))) 2544400362f1STakashi Iwai continue; 25456aa6925cSYao-Wen Mao if (cval->cached & (1 << (c + 1))) { 2546eef90451SChris J Arges err = snd_usb_set_cur_mix_value(cval, c + 1, idx, 2547400362f1STakashi Iwai cval->cache_val[idx]); 2548400362f1STakashi Iwai if (err < 0) 2549400362f1STakashi Iwai return err; 2550400362f1STakashi Iwai } 2551400362f1STakashi Iwai idx++; 2552400362f1STakashi Iwai } 2553400362f1STakashi Iwai } else { 2554400362f1STakashi Iwai /* master */ 2555400362f1STakashi Iwai if (cval->cached) { 2556eef90451SChris J Arges err = snd_usb_set_cur_mix_value(cval, 0, 0, *cval->cache_val); 2557400362f1STakashi Iwai if (err < 0) 2558400362f1STakashi Iwai return err; 2559400362f1STakashi Iwai } 2560400362f1STakashi Iwai } 2561400362f1STakashi Iwai 2562400362f1STakashi Iwai return 0; 2563400362f1STakashi Iwai } 2564400362f1STakashi Iwai 2565400362f1STakashi Iwai int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume) 2566400362f1STakashi Iwai { 25673360b84bSTakashi Iwai struct usb_mixer_elem_list *list; 2568400362f1STakashi Iwai int id, err; 2569400362f1STakashi Iwai 2570400362f1STakashi Iwai if (reset_resume) { 2571400362f1STakashi Iwai /* restore cached mixer values */ 2572400362f1STakashi Iwai for (id = 0; id < MAX_ID_ELEMS; id++) { 25733360b84bSTakashi Iwai for (list = mixer->id_elems[id]; list; 25743360b84bSTakashi Iwai list = list->next_id_elem) { 25753360b84bSTakashi Iwai if (list->resume) { 25763360b84bSTakashi Iwai err = list->resume(list); 2577400362f1STakashi Iwai if (err < 0) 2578400362f1STakashi Iwai return err; 2579400362f1STakashi Iwai } 2580400362f1STakashi Iwai } 2581400362f1STakashi Iwai } 25823360b84bSTakashi Iwai } 2583400362f1STakashi Iwai 2584400362f1STakashi Iwai return snd_usb_mixer_activate(mixer); 2585400362f1STakashi Iwai } 2586400362f1STakashi Iwai #endif 25873360b84bSTakashi Iwai 25883360b84bSTakashi Iwai void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, 25893360b84bSTakashi Iwai struct usb_mixer_interface *mixer, 25903360b84bSTakashi Iwai int unitid) 25913360b84bSTakashi Iwai { 25923360b84bSTakashi Iwai list->mixer = mixer; 25933360b84bSTakashi Iwai list->id = unitid; 25943360b84bSTakashi Iwai list->dump = snd_usb_mixer_dump_cval; 25953360b84bSTakashi Iwai #ifdef CONFIG_PM 25963360b84bSTakashi Iwai list->resume = restore_mixer_value; 25973360b84bSTakashi Iwai #endif 25983360b84bSTakashi Iwai } 2599