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 139f0b5e634SDaniel Mack /* check whether the control should be ignored */ 140f0b5e634SDaniel Mack static inline int 141f0b5e634SDaniel Mack check_ignored_ctl(const struct usbmix_name_map *p) 142f0b5e634SDaniel Mack { 143f0b5e634SDaniel Mack if (!p || p->name || p->dB) 144f0b5e634SDaniel Mack return 0; 145f0b5e634SDaniel Mack return 1; 146f0b5e634SDaniel Mack } 147f0b5e634SDaniel Mack 148f0b5e634SDaniel Mack /* dB mapping */ 149f0b5e634SDaniel Mack static inline void check_mapped_dB(const struct usbmix_name_map *p, 150f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval) 151f0b5e634SDaniel Mack { 152f0b5e634SDaniel Mack if (p && p->dB) { 153f0b5e634SDaniel Mack cval->dBmin = p->dB->min; 154f0b5e634SDaniel Mack cval->dBmax = p->dB->max; 15538b65190STakashi Iwai cval->initialized = 1; 156f0b5e634SDaniel Mack } 157f0b5e634SDaniel Mack } 158f0b5e634SDaniel Mack 159f0b5e634SDaniel Mack /* get the mapped selector source name */ 160f0b5e634SDaniel Mack static int check_mapped_selector_name(struct mixer_build *state, int unitid, 161f0b5e634SDaniel Mack int index, char *buf, int buflen) 162f0b5e634SDaniel Mack { 163f0b5e634SDaniel Mack const struct usbmix_selector_map *p; 164f0b5e634SDaniel Mack 165f0b5e634SDaniel Mack if (! state->selector_map) 166f0b5e634SDaniel Mack return 0; 167f0b5e634SDaniel Mack for (p = state->selector_map; p->id; p++) { 168f0b5e634SDaniel Mack if (p->id == unitid && index < p->count) 169f0b5e634SDaniel Mack return strlcpy(buf, p->names[index], buflen); 170f0b5e634SDaniel Mack } 171f0b5e634SDaniel Mack return 0; 172f0b5e634SDaniel Mack } 173f0b5e634SDaniel Mack 174f0b5e634SDaniel Mack /* 175f0b5e634SDaniel Mack * find an audio control unit with the given unit id 176f0b5e634SDaniel Mack */ 177f0b5e634SDaniel Mack static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit) 178f0b5e634SDaniel Mack { 17967e1daa0SDaniel Mack /* we just parse the header */ 18067e1daa0SDaniel Mack struct uac_feature_unit_descriptor *hdr = NULL; 181f0b5e634SDaniel Mack 18267e1daa0SDaniel Mack while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr, 183f0b5e634SDaniel Mack USB_DT_CS_INTERFACE)) != NULL) { 18467e1daa0SDaniel Mack if (hdr->bLength >= 4 && 18567e1daa0SDaniel Mack hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && 18667e1daa0SDaniel Mack hdr->bDescriptorSubtype <= UAC2_SAMPLE_RATE_CONVERTER && 18767e1daa0SDaniel Mack hdr->bUnitID == unit) 18867e1daa0SDaniel Mack return hdr; 189f0b5e634SDaniel Mack } 19067e1daa0SDaniel Mack 191f0b5e634SDaniel Mack return NULL; 192f0b5e634SDaniel Mack } 193f0b5e634SDaniel Mack 194f0b5e634SDaniel Mack /* 195f0b5e634SDaniel Mack * copy a string with the given id 196f0b5e634SDaniel Mack */ 197f0b5e634SDaniel Mack static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) 198f0b5e634SDaniel Mack { 199f0b5e634SDaniel Mack int len = usb_string(state->chip->dev, index, buf, maxlen - 1); 200f0b5e634SDaniel Mack buf[len] = 0; 201f0b5e634SDaniel Mack return len; 202f0b5e634SDaniel Mack } 203f0b5e634SDaniel Mack 204f0b5e634SDaniel Mack /* 205f0b5e634SDaniel Mack * convert from the byte/word on usb descriptor to the zero-based integer 206f0b5e634SDaniel Mack */ 207f0b5e634SDaniel Mack static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) 208f0b5e634SDaniel Mack { 209f0b5e634SDaniel Mack switch (cval->val_type) { 210f0b5e634SDaniel Mack case USB_MIXER_BOOLEAN: 211f0b5e634SDaniel Mack return !!val; 212f0b5e634SDaniel Mack case USB_MIXER_INV_BOOLEAN: 213f0b5e634SDaniel Mack return !val; 214f0b5e634SDaniel Mack case USB_MIXER_U8: 215f0b5e634SDaniel Mack val &= 0xff; 216f0b5e634SDaniel Mack break; 217f0b5e634SDaniel Mack case USB_MIXER_S8: 218f0b5e634SDaniel Mack val &= 0xff; 219f0b5e634SDaniel Mack if (val >= 0x80) 220f0b5e634SDaniel Mack val -= 0x100; 221f0b5e634SDaniel Mack break; 222f0b5e634SDaniel Mack case USB_MIXER_U16: 223f0b5e634SDaniel Mack val &= 0xffff; 224f0b5e634SDaniel Mack break; 225f0b5e634SDaniel Mack case USB_MIXER_S16: 226f0b5e634SDaniel Mack val &= 0xffff; 227f0b5e634SDaniel Mack if (val >= 0x8000) 228f0b5e634SDaniel Mack val -= 0x10000; 229f0b5e634SDaniel Mack break; 230f0b5e634SDaniel Mack } 231f0b5e634SDaniel Mack return val; 232f0b5e634SDaniel Mack } 233f0b5e634SDaniel Mack 234f0b5e634SDaniel Mack /* 235f0b5e634SDaniel Mack * convert from the zero-based int to the byte/word for usb descriptor 236f0b5e634SDaniel Mack */ 237f0b5e634SDaniel Mack static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) 238f0b5e634SDaniel Mack { 239f0b5e634SDaniel Mack switch (cval->val_type) { 240f0b5e634SDaniel Mack case USB_MIXER_BOOLEAN: 241f0b5e634SDaniel Mack return !!val; 242f0b5e634SDaniel Mack case USB_MIXER_INV_BOOLEAN: 243f0b5e634SDaniel Mack return !val; 244f0b5e634SDaniel Mack case USB_MIXER_S8: 245f0b5e634SDaniel Mack case USB_MIXER_U8: 246f0b5e634SDaniel Mack return val & 0xff; 247f0b5e634SDaniel Mack case USB_MIXER_S16: 248f0b5e634SDaniel Mack case USB_MIXER_U16: 249f0b5e634SDaniel Mack return val & 0xffff; 250f0b5e634SDaniel Mack } 251f0b5e634SDaniel Mack return 0; /* not reached */ 252f0b5e634SDaniel Mack } 253f0b5e634SDaniel Mack 254f0b5e634SDaniel Mack static int get_relative_value(struct usb_mixer_elem_info *cval, int val) 255f0b5e634SDaniel Mack { 256f0b5e634SDaniel Mack if (! cval->res) 257f0b5e634SDaniel Mack cval->res = 1; 258f0b5e634SDaniel Mack if (val < cval->min) 259f0b5e634SDaniel Mack return 0; 260f0b5e634SDaniel Mack else if (val >= cval->max) 261f0b5e634SDaniel Mack return (cval->max - cval->min + cval->res - 1) / cval->res; 262f0b5e634SDaniel Mack else 263f0b5e634SDaniel Mack return (val - cval->min) / cval->res; 264f0b5e634SDaniel Mack } 265f0b5e634SDaniel Mack 266f0b5e634SDaniel Mack static int get_abs_value(struct usb_mixer_elem_info *cval, int val) 267f0b5e634SDaniel Mack { 268f0b5e634SDaniel Mack if (val < 0) 269f0b5e634SDaniel Mack return cval->min; 270f0b5e634SDaniel Mack if (! cval->res) 271f0b5e634SDaniel Mack cval->res = 1; 272f0b5e634SDaniel Mack val *= cval->res; 273f0b5e634SDaniel Mack val += cval->min; 274f0b5e634SDaniel Mack if (val > cval->max) 275f0b5e634SDaniel Mack return cval->max; 276f0b5e634SDaniel Mack return val; 277f0b5e634SDaniel Mack } 278f0b5e634SDaniel Mack 279f0b5e634SDaniel Mack 280f0b5e634SDaniel Mack /* 281f0b5e634SDaniel Mack * retrieve a mixer value 282f0b5e634SDaniel Mack */ 283f0b5e634SDaniel Mack 28423caaf19SDaniel Mack static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 285f0b5e634SDaniel Mack { 2863d8d4dcfSDaniel Mack struct snd_usb_audio *chip = cval->mixer->chip; 287f0b5e634SDaniel Mack unsigned char buf[2]; 288f0b5e634SDaniel Mack int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 289f0b5e634SDaniel Mack int timeout = 10; 290978520b7STakashi Iwai int idx = 0, err; 291f0b5e634SDaniel Mack 29288a8516aSOliver Neukum err = snd_usb_autoresume(cval->mixer->chip); 29388a8516aSOliver Neukum if (err < 0) 29488a8516aSOliver Neukum return -EIO; 29534f3c89fSTakashi Iwai down_read(&chip->shutdown_rwsem); 296f0b5e634SDaniel Mack while (timeout-- > 0) { 297978520b7STakashi Iwai if (chip->shutdown) 298978520b7STakashi Iwai break; 299978520b7STakashi Iwai idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); 3003d8d4dcfSDaniel Mack if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, 301f0b5e634SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 302978520b7STakashi Iwai validx, idx, buf, val_len) >= val_len) { 303f0b5e634SDaniel Mack *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); 304978520b7STakashi Iwai err = 0; 305978520b7STakashi Iwai goto out; 306f0b5e634SDaniel Mack } 307f0b5e634SDaniel Mack } 308f0b5e634SDaniel Mack snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 309978520b7STakashi Iwai request, validx, idx, cval->val_type); 310978520b7STakashi Iwai err = -EINVAL; 311978520b7STakashi Iwai 312978520b7STakashi Iwai out: 31334f3c89fSTakashi Iwai up_read(&chip->shutdown_rwsem); 314978520b7STakashi Iwai snd_usb_autosuspend(cval->mixer->chip); 315978520b7STakashi Iwai return err; 316f0b5e634SDaniel Mack } 317f0b5e634SDaniel Mack 31823caaf19SDaniel Mack static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 31923caaf19SDaniel Mack { 3203d8d4dcfSDaniel Mack struct snd_usb_audio *chip = cval->mixer->chip; 321e8bdb6bbSDaniel Mack unsigned char buf[2 + 3*sizeof(__u16)]; /* enough space for one range */ 32223caaf19SDaniel Mack unsigned char *val; 323978520b7STakashi Iwai int idx = 0, ret, size; 32423caaf19SDaniel Mack __u8 bRequest; 32523caaf19SDaniel Mack 326e8bdb6bbSDaniel Mack if (request == UAC_GET_CUR) { 327e8bdb6bbSDaniel Mack bRequest = UAC2_CS_CUR; 328e8bdb6bbSDaniel Mack size = sizeof(__u16); 329e8bdb6bbSDaniel Mack } else { 330e8bdb6bbSDaniel Mack bRequest = UAC2_CS_RANGE; 331e8bdb6bbSDaniel Mack size = sizeof(buf); 332e8bdb6bbSDaniel Mack } 333e8bdb6bbSDaniel Mack 334e8bdb6bbSDaniel Mack memset(buf, 0, sizeof(buf)); 33523caaf19SDaniel Mack 33688a8516aSOliver Neukum ret = snd_usb_autoresume(chip) ? -EIO : 0; 33788a8516aSOliver Neukum if (ret) 33888a8516aSOliver Neukum goto error; 33988a8516aSOliver Neukum 34034f3c89fSTakashi Iwai down_read(&chip->shutdown_rwsem); 341978520b7STakashi Iwai if (chip->shutdown) 342978520b7STakashi Iwai ret = -ENODEV; 343978520b7STakashi Iwai else { 344978520b7STakashi Iwai idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); 3453d8d4dcfSDaniel Mack ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest, 34623caaf19SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 347978520b7STakashi Iwai validx, idx, buf, size); 348978520b7STakashi Iwai } 34934f3c89fSTakashi Iwai up_read(&chip->shutdown_rwsem); 35088a8516aSOliver Neukum snd_usb_autosuspend(chip); 35123caaf19SDaniel Mack 35223caaf19SDaniel Mack if (ret < 0) { 35388a8516aSOliver Neukum error: 35409414207SDaniel Mack snd_printk(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 355978520b7STakashi Iwai request, validx, idx, cval->val_type); 35623caaf19SDaniel Mack return ret; 35723caaf19SDaniel Mack } 35823caaf19SDaniel Mack 359e8bdb6bbSDaniel Mack /* FIXME: how should we handle multiple triplets here? */ 360e8bdb6bbSDaniel Mack 36123caaf19SDaniel Mack switch (request) { 36223caaf19SDaniel Mack case UAC_GET_CUR: 36323caaf19SDaniel Mack val = buf; 36423caaf19SDaniel Mack break; 36523caaf19SDaniel Mack case UAC_GET_MIN: 36623caaf19SDaniel Mack val = buf + sizeof(__u16); 36723caaf19SDaniel Mack break; 36823caaf19SDaniel Mack case UAC_GET_MAX: 36923caaf19SDaniel Mack val = buf + sizeof(__u16) * 2; 37023caaf19SDaniel Mack break; 37123caaf19SDaniel Mack case UAC_GET_RES: 37223caaf19SDaniel Mack val = buf + sizeof(__u16) * 3; 37323caaf19SDaniel Mack break; 37423caaf19SDaniel Mack default: 37523caaf19SDaniel Mack return -EINVAL; 37623caaf19SDaniel Mack } 37723caaf19SDaniel Mack 37823caaf19SDaniel Mack *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16))); 37923caaf19SDaniel Mack 38023caaf19SDaniel Mack return 0; 38123caaf19SDaniel Mack } 38223caaf19SDaniel Mack 38323caaf19SDaniel Mack static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 38423caaf19SDaniel Mack { 3859f814105SEldad Zack validx += cval->idx_off; 3869f814105SEldad Zack 38723caaf19SDaniel Mack return (cval->mixer->protocol == UAC_VERSION_1) ? 38823caaf19SDaniel Mack get_ctl_value_v1(cval, request, validx, value_ret) : 38923caaf19SDaniel Mack get_ctl_value_v2(cval, request, validx, value_ret); 39023caaf19SDaniel Mack } 39123caaf19SDaniel Mack 392f0b5e634SDaniel Mack static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value) 393f0b5e634SDaniel Mack { 394f0b5e634SDaniel Mack return get_ctl_value(cval, UAC_GET_CUR, validx, value); 395f0b5e634SDaniel Mack } 396f0b5e634SDaniel Mack 397f0b5e634SDaniel Mack /* channel = 0: master, 1 = first channel */ 398f0b5e634SDaniel Mack static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, 399f0b5e634SDaniel Mack int channel, int *value) 400f0b5e634SDaniel Mack { 401f0b5e634SDaniel Mack return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value); 402f0b5e634SDaniel Mack } 403f0b5e634SDaniel Mack 404f0b5e634SDaniel Mack static int get_cur_mix_value(struct usb_mixer_elem_info *cval, 405f0b5e634SDaniel Mack int channel, int index, int *value) 406f0b5e634SDaniel Mack { 407f0b5e634SDaniel Mack int err; 408f0b5e634SDaniel Mack 409f0b5e634SDaniel Mack if (cval->cached & (1 << channel)) { 410f0b5e634SDaniel Mack *value = cval->cache_val[index]; 411f0b5e634SDaniel Mack return 0; 412f0b5e634SDaniel Mack } 413f0b5e634SDaniel Mack err = get_cur_mix_raw(cval, channel, value); 414f0b5e634SDaniel Mack if (err < 0) { 415f0b5e634SDaniel Mack if (!cval->mixer->ignore_ctl_error) 41623caaf19SDaniel Mack snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", 417f0b5e634SDaniel Mack cval->control, channel, err); 418f0b5e634SDaniel Mack return err; 419f0b5e634SDaniel Mack } 420f0b5e634SDaniel Mack cval->cached |= 1 << channel; 421f0b5e634SDaniel Mack cval->cache_val[index] = *value; 422f0b5e634SDaniel Mack return 0; 423f0b5e634SDaniel Mack } 424f0b5e634SDaniel Mack 425f0b5e634SDaniel Mack 426f0b5e634SDaniel Mack /* 427f0b5e634SDaniel Mack * set a mixer value 428f0b5e634SDaniel Mack */ 429f0b5e634SDaniel Mack 430f0b5e634SDaniel Mack int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 431f0b5e634SDaniel Mack int request, int validx, int value_set) 432f0b5e634SDaniel Mack { 4333d8d4dcfSDaniel Mack struct snd_usb_audio *chip = cval->mixer->chip; 434f0b5e634SDaniel Mack unsigned char buf[2]; 435978520b7STakashi Iwai int idx = 0, val_len, err, timeout = 10; 43623caaf19SDaniel Mack 4379f814105SEldad Zack validx += cval->idx_off; 4389f814105SEldad Zack 43923caaf19SDaniel Mack if (cval->mixer->protocol == UAC_VERSION_1) { 44023caaf19SDaniel Mack val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 44123caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 44223caaf19SDaniel Mack /* audio class v2 controls are always 2 bytes in size */ 44323caaf19SDaniel Mack val_len = sizeof(__u16); 44423caaf19SDaniel Mack 44523caaf19SDaniel Mack /* FIXME */ 44623caaf19SDaniel Mack if (request != UAC_SET_CUR) { 44723caaf19SDaniel Mack snd_printdd(KERN_WARNING "RANGE setting not yet supported\n"); 44823caaf19SDaniel Mack return -EINVAL; 44923caaf19SDaniel Mack } 45023caaf19SDaniel Mack 45123caaf19SDaniel Mack request = UAC2_CS_CUR; 45223caaf19SDaniel Mack } 453f0b5e634SDaniel Mack 454f0b5e634SDaniel Mack value_set = convert_bytes_value(cval, value_set); 455f0b5e634SDaniel Mack buf[0] = value_set & 0xff; 456f0b5e634SDaniel Mack buf[1] = (value_set >> 8) & 0xff; 45788a8516aSOliver Neukum err = snd_usb_autoresume(chip); 45888a8516aSOliver Neukum if (err < 0) 45988a8516aSOliver Neukum return -EIO; 46034f3c89fSTakashi Iwai down_read(&chip->shutdown_rwsem); 461978520b7STakashi Iwai while (timeout-- > 0) { 462978520b7STakashi Iwai if (chip->shutdown) 463978520b7STakashi Iwai break; 464978520b7STakashi Iwai idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); 4653d8d4dcfSDaniel Mack if (snd_usb_ctl_msg(chip->dev, 4663d8d4dcfSDaniel Mack usb_sndctrlpipe(chip->dev, 0), request, 467f0b5e634SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, 468978520b7STakashi Iwai validx, idx, buf, val_len) >= 0) { 469978520b7STakashi Iwai err = 0; 470978520b7STakashi Iwai goto out; 47188a8516aSOliver Neukum } 472978520b7STakashi Iwai } 473f0b5e634SDaniel Mack snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", 474978520b7STakashi Iwai request, validx, idx, cval->val_type, buf[0], buf[1]); 475978520b7STakashi Iwai err = -EINVAL; 476978520b7STakashi Iwai 477978520b7STakashi Iwai out: 47834f3c89fSTakashi Iwai up_read(&chip->shutdown_rwsem); 479978520b7STakashi Iwai snd_usb_autosuspend(chip); 480978520b7STakashi Iwai return err; 481f0b5e634SDaniel Mack } 482f0b5e634SDaniel Mack 483f0b5e634SDaniel Mack static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value) 484f0b5e634SDaniel Mack { 485f0b5e634SDaniel Mack return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value); 486f0b5e634SDaniel Mack } 487f0b5e634SDaniel Mack 488f0b5e634SDaniel Mack static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, 489f0b5e634SDaniel Mack int index, int value) 490f0b5e634SDaniel Mack { 491f0b5e634SDaniel Mack int err; 492a6a33259SDaniel Mack unsigned int read_only = (channel == 0) ? 493a6a33259SDaniel Mack cval->master_readonly : 494a6a33259SDaniel Mack cval->ch_readonly & (1 << (channel - 1)); 495a6a33259SDaniel Mack 496a6a33259SDaniel Mack if (read_only) { 497a6a33259SDaniel Mack snd_printdd(KERN_INFO "%s(): channel %d of control %d is read_only\n", 498a6a33259SDaniel Mack __func__, channel, cval->control); 499a6a33259SDaniel Mack return 0; 500a6a33259SDaniel Mack } 501a6a33259SDaniel Mack 502f0b5e634SDaniel Mack err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel, 503f0b5e634SDaniel Mack value); 504f0b5e634SDaniel Mack if (err < 0) 505f0b5e634SDaniel Mack return err; 506f0b5e634SDaniel Mack cval->cached |= 1 << channel; 507f0b5e634SDaniel Mack cval->cache_val[index] = value; 508f0b5e634SDaniel Mack return 0; 509f0b5e634SDaniel Mack } 510f0b5e634SDaniel Mack 511f0b5e634SDaniel Mack /* 512f0b5e634SDaniel Mack * TLV callback for mixer volume controls 513f0b5e634SDaniel Mack */ 514285de9c0SFelix Homann int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 515f0b5e634SDaniel Mack unsigned int size, unsigned int __user *_tlv) 516f0b5e634SDaniel Mack { 517f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 518f0b5e634SDaniel Mack DECLARE_TLV_DB_MINMAX(scale, 0, 0); 519f0b5e634SDaniel Mack 520f0b5e634SDaniel Mack if (size < sizeof(scale)) 521f0b5e634SDaniel Mack return -ENOMEM; 522f0b5e634SDaniel Mack scale[2] = cval->dBmin; 523f0b5e634SDaniel Mack scale[3] = cval->dBmax; 524f0b5e634SDaniel Mack if (copy_to_user(_tlv, scale, sizeof(scale))) 525f0b5e634SDaniel Mack return -EFAULT; 526f0b5e634SDaniel Mack return 0; 527f0b5e634SDaniel Mack } 528f0b5e634SDaniel Mack 529f0b5e634SDaniel Mack /* 530f0b5e634SDaniel Mack * parser routines begin here... 531f0b5e634SDaniel Mack */ 532f0b5e634SDaniel Mack 533f0b5e634SDaniel Mack static int parse_audio_unit(struct mixer_build *state, int unitid); 534f0b5e634SDaniel Mack 535f0b5e634SDaniel Mack 536f0b5e634SDaniel Mack /* 537f0b5e634SDaniel Mack * check if the input/output channel routing is enabled on the given bitmap. 538f0b5e634SDaniel Mack * used for mixer unit parser 539f0b5e634SDaniel Mack */ 540f0b5e634SDaniel Mack static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) 541f0b5e634SDaniel Mack { 542f0b5e634SDaniel Mack int idx = ich * num_outs + och; 543f0b5e634SDaniel Mack return bmap[idx >> 3] & (0x80 >> (idx & 7)); 544f0b5e634SDaniel Mack } 545f0b5e634SDaniel Mack 546f0b5e634SDaniel Mack 547f0b5e634SDaniel Mack /* 548f0b5e634SDaniel Mack * add an alsa control element 549f0b5e634SDaniel Mack * search and increment the index until an empty slot is found. 550f0b5e634SDaniel Mack * 551f0b5e634SDaniel Mack * if failed, give up and free the control instance. 552f0b5e634SDaniel Mack */ 553f0b5e634SDaniel Mack 554ef9d5970SDaniel Mack int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer, 555ef9d5970SDaniel Mack struct snd_kcontrol *kctl) 556f0b5e634SDaniel Mack { 557f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kctl->private_data; 558f0b5e634SDaniel Mack int err; 559f0b5e634SDaniel Mack 560ef9d5970SDaniel Mack while (snd_ctl_find_id(mixer->chip->card, &kctl->id)) 561f0b5e634SDaniel Mack kctl->id.index++; 562ef9d5970SDaniel Mack if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) { 563f0b5e634SDaniel Mack snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); 564f0b5e634SDaniel Mack return err; 565f0b5e634SDaniel Mack } 566f0b5e634SDaniel Mack cval->elem_id = &kctl->id; 567ef9d5970SDaniel Mack cval->next_id_elem = mixer->id_elems[cval->id]; 568ef9d5970SDaniel Mack mixer->id_elems[cval->id] = cval; 569f0b5e634SDaniel Mack return 0; 570f0b5e634SDaniel Mack } 571f0b5e634SDaniel Mack 572f0b5e634SDaniel Mack 573f0b5e634SDaniel Mack /* 574f0b5e634SDaniel Mack * get a terminal name string 575f0b5e634SDaniel Mack */ 576f0b5e634SDaniel Mack 577f0b5e634SDaniel Mack static struct iterm_name_combo { 578f0b5e634SDaniel Mack int type; 579f0b5e634SDaniel Mack char *name; 580f0b5e634SDaniel Mack } iterm_names[] = { 581f0b5e634SDaniel Mack { 0x0300, "Output" }, 582f0b5e634SDaniel Mack { 0x0301, "Speaker" }, 583f0b5e634SDaniel Mack { 0x0302, "Headphone" }, 584f0b5e634SDaniel Mack { 0x0303, "HMD Audio" }, 585f0b5e634SDaniel Mack { 0x0304, "Desktop Speaker" }, 586f0b5e634SDaniel Mack { 0x0305, "Room Speaker" }, 587f0b5e634SDaniel Mack { 0x0306, "Com Speaker" }, 588f0b5e634SDaniel Mack { 0x0307, "LFE" }, 589f0b5e634SDaniel Mack { 0x0600, "External In" }, 590f0b5e634SDaniel Mack { 0x0601, "Analog In" }, 591f0b5e634SDaniel Mack { 0x0602, "Digital In" }, 592f0b5e634SDaniel Mack { 0x0603, "Line" }, 593f0b5e634SDaniel Mack { 0x0604, "Legacy In" }, 594f0b5e634SDaniel Mack { 0x0605, "IEC958 In" }, 595f0b5e634SDaniel Mack { 0x0606, "1394 DA Stream" }, 596f0b5e634SDaniel Mack { 0x0607, "1394 DV Stream" }, 597f0b5e634SDaniel Mack { 0x0700, "Embedded" }, 598f0b5e634SDaniel Mack { 0x0701, "Noise Source" }, 599f0b5e634SDaniel Mack { 0x0702, "Equalization Noise" }, 600f0b5e634SDaniel Mack { 0x0703, "CD" }, 601f0b5e634SDaniel Mack { 0x0704, "DAT" }, 602f0b5e634SDaniel Mack { 0x0705, "DCC" }, 603f0b5e634SDaniel Mack { 0x0706, "MiniDisk" }, 604f0b5e634SDaniel Mack { 0x0707, "Analog Tape" }, 605f0b5e634SDaniel Mack { 0x0708, "Phonograph" }, 606f0b5e634SDaniel Mack { 0x0709, "VCR Audio" }, 607f0b5e634SDaniel Mack { 0x070a, "Video Disk Audio" }, 608f0b5e634SDaniel Mack { 0x070b, "DVD Audio" }, 609f0b5e634SDaniel Mack { 0x070c, "TV Tuner Audio" }, 610f0b5e634SDaniel Mack { 0x070d, "Satellite Rec Audio" }, 611f0b5e634SDaniel Mack { 0x070e, "Cable Tuner Audio" }, 612f0b5e634SDaniel Mack { 0x070f, "DSS Audio" }, 613f0b5e634SDaniel Mack { 0x0710, "Radio Receiver" }, 614f0b5e634SDaniel Mack { 0x0711, "Radio Transmitter" }, 615f0b5e634SDaniel Mack { 0x0712, "Multi-Track Recorder" }, 616f0b5e634SDaniel Mack { 0x0713, "Synthesizer" }, 617f0b5e634SDaniel Mack { 0 }, 618f0b5e634SDaniel Mack }; 619f0b5e634SDaniel Mack 620f0b5e634SDaniel Mack static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, 621f0b5e634SDaniel Mack unsigned char *name, int maxlen, int term_only) 622f0b5e634SDaniel Mack { 623f0b5e634SDaniel Mack struct iterm_name_combo *names; 624f0b5e634SDaniel Mack 625f0b5e634SDaniel Mack if (iterm->name) 626f0b5e634SDaniel Mack return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); 627f0b5e634SDaniel Mack 628f0b5e634SDaniel Mack /* virtual type - not a real terminal */ 629f0b5e634SDaniel Mack if (iterm->type >> 16) { 630f0b5e634SDaniel Mack if (term_only) 631f0b5e634SDaniel Mack return 0; 632f0b5e634SDaniel Mack switch (iterm->type >> 16) { 633f0b5e634SDaniel Mack case UAC_SELECTOR_UNIT: 634f0b5e634SDaniel Mack strcpy(name, "Selector"); return 8; 63569da9bcbSDaniel Mack case UAC1_PROCESSING_UNIT: 636f0b5e634SDaniel Mack strcpy(name, "Process Unit"); return 12; 63769da9bcbSDaniel Mack case UAC1_EXTENSION_UNIT: 638f0b5e634SDaniel Mack strcpy(name, "Ext Unit"); return 8; 639f0b5e634SDaniel Mack case UAC_MIXER_UNIT: 640f0b5e634SDaniel Mack strcpy(name, "Mixer"); return 5; 641f0b5e634SDaniel Mack default: 642f0b5e634SDaniel Mack return sprintf(name, "Unit %d", iterm->id); 643f0b5e634SDaniel Mack } 644f0b5e634SDaniel Mack } 645f0b5e634SDaniel Mack 646f0b5e634SDaniel Mack switch (iterm->type & 0xff00) { 647f0b5e634SDaniel Mack case 0x0100: 648f0b5e634SDaniel Mack strcpy(name, "PCM"); return 3; 649f0b5e634SDaniel Mack case 0x0200: 650f0b5e634SDaniel Mack strcpy(name, "Mic"); return 3; 651f0b5e634SDaniel Mack case 0x0400: 652f0b5e634SDaniel Mack strcpy(name, "Headset"); return 7; 653f0b5e634SDaniel Mack case 0x0500: 654f0b5e634SDaniel Mack strcpy(name, "Phone"); return 5; 655f0b5e634SDaniel Mack } 656f0b5e634SDaniel Mack 657f0b5e634SDaniel Mack for (names = iterm_names; names->type; names++) 658f0b5e634SDaniel Mack if (names->type == iterm->type) { 659f0b5e634SDaniel Mack strcpy(name, names->name); 660f0b5e634SDaniel Mack return strlen(names->name); 661f0b5e634SDaniel Mack } 662f0b5e634SDaniel Mack return 0; 663f0b5e634SDaniel Mack } 664f0b5e634SDaniel Mack 665f0b5e634SDaniel Mack 666f0b5e634SDaniel Mack /* 667f0b5e634SDaniel Mack * parse the source unit recursively until it reaches to a terminal 668f0b5e634SDaniel Mack * or a branched unit. 669f0b5e634SDaniel Mack */ 670f0b5e634SDaniel Mack static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term) 671f0b5e634SDaniel Mack { 67209414207SDaniel Mack int err; 67323caaf19SDaniel Mack void *p1; 674f0b5e634SDaniel Mack 675f0b5e634SDaniel Mack memset(term, 0, sizeof(*term)); 676f0b5e634SDaniel Mack while ((p1 = find_audio_control_unit(state, id)) != NULL) { 67723caaf19SDaniel Mack unsigned char *hdr = p1; 678f0b5e634SDaniel Mack term->id = id; 67923caaf19SDaniel Mack switch (hdr[2]) { 680f0b5e634SDaniel Mack case UAC_INPUT_TERMINAL: 68123caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 68223caaf19SDaniel Mack struct uac_input_terminal_descriptor *d = p1; 68323caaf19SDaniel Mack term->type = le16_to_cpu(d->wTerminalType); 68423caaf19SDaniel Mack term->channels = d->bNrChannels; 68523caaf19SDaniel Mack term->chconfig = le16_to_cpu(d->wChannelConfig); 68623caaf19SDaniel Mack term->name = d->iTerminal; 68723caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 68823caaf19SDaniel Mack struct uac2_input_terminal_descriptor *d = p1; 68923caaf19SDaniel Mack term->type = le16_to_cpu(d->wTerminalType); 69023caaf19SDaniel Mack term->channels = d->bNrChannels; 69123caaf19SDaniel Mack term->chconfig = le32_to_cpu(d->bmChannelConfig); 69223caaf19SDaniel Mack term->name = d->iTerminal; 69309414207SDaniel Mack 69409414207SDaniel Mack /* call recursively to get the clock selectors */ 69509414207SDaniel Mack err = check_input_term(state, d->bCSourceID, term); 69609414207SDaniel Mack if (err < 0) 69709414207SDaniel Mack return err; 69823caaf19SDaniel Mack } 699f0b5e634SDaniel Mack return 0; 70023caaf19SDaniel Mack case UAC_FEATURE_UNIT: { 70123caaf19SDaniel Mack /* the header is the same for v1 and v2 */ 70223caaf19SDaniel Mack struct uac_feature_unit_descriptor *d = p1; 7035e688883SDaniel Mack id = d->bSourceID; 704f0b5e634SDaniel Mack break; /* continue to parse */ 705f0b5e634SDaniel Mack } 70623caaf19SDaniel Mack case UAC_MIXER_UNIT: { 70723caaf19SDaniel Mack struct uac_mixer_unit_descriptor *d = p1; 70823caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 70923caaf19SDaniel Mack term->channels = uac_mixer_unit_bNrChannels(d); 71023caaf19SDaniel Mack term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol); 71123caaf19SDaniel Mack term->name = uac_mixer_unit_iMixer(d); 712f0b5e634SDaniel Mack return 0; 71323caaf19SDaniel Mack } 71409414207SDaniel Mack case UAC_SELECTOR_UNIT: 71509414207SDaniel Mack case UAC2_CLOCK_SELECTOR: { 71623caaf19SDaniel Mack struct uac_selector_unit_descriptor *d = p1; 71723caaf19SDaniel Mack /* call recursively to retrieve the channel info */ 71823caaf19SDaniel Mack if (check_input_term(state, d->baSourceID[0], term) < 0) 71923caaf19SDaniel Mack return -ENODEV; 72023caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 72123caaf19SDaniel Mack term->id = id; 72223caaf19SDaniel Mack term->name = uac_selector_unit_iSelector(d); 72323caaf19SDaniel Mack return 0; 72423caaf19SDaniel Mack } 72569da9bcbSDaniel Mack case UAC1_PROCESSING_UNIT: 7265dae5fd2SEldad Zack case UAC1_EXTENSION_UNIT: 7275dae5fd2SEldad Zack /* UAC2_PROCESSING_UNIT_V2 */ 7285dae5fd2SEldad Zack /* UAC2_EFFECT_UNIT */ { 72923caaf19SDaniel Mack struct uac_processing_unit_descriptor *d = p1; 7305dae5fd2SEldad Zack 7315dae5fd2SEldad Zack if (state->mixer->protocol == UAC_VERSION_2 && 7325dae5fd2SEldad Zack hdr[2] == UAC2_EFFECT_UNIT) { 7335dae5fd2SEldad Zack /* UAC2/UAC1 unit IDs overlap here in an 7345dae5fd2SEldad Zack * uncompatible way. Ignore this unit for now. 7355dae5fd2SEldad Zack */ 7365dae5fd2SEldad Zack return 0; 7375dae5fd2SEldad Zack } 7385dae5fd2SEldad Zack 73923caaf19SDaniel Mack if (d->bNrInPins) { 74023caaf19SDaniel Mack id = d->baSourceID[0]; 74123caaf19SDaniel Mack break; /* continue to parse */ 74223caaf19SDaniel Mack } 74323caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 74423caaf19SDaniel Mack term->channels = uac_processing_unit_bNrChannels(d); 74523caaf19SDaniel Mack term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol); 74623caaf19SDaniel Mack term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol); 74723caaf19SDaniel Mack return 0; 74823caaf19SDaniel Mack } 74909414207SDaniel Mack case UAC2_CLOCK_SOURCE: { 75009414207SDaniel Mack struct uac_clock_source_descriptor *d = p1; 75109414207SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 75209414207SDaniel Mack term->id = id; 75309414207SDaniel Mack term->name = d->iClockSource; 75409414207SDaniel Mack return 0; 75509414207SDaniel Mack } 756f0b5e634SDaniel Mack default: 757f0b5e634SDaniel Mack return -ENODEV; 758f0b5e634SDaniel Mack } 759f0b5e634SDaniel Mack } 760f0b5e634SDaniel Mack return -ENODEV; 761f0b5e634SDaniel Mack } 762f0b5e634SDaniel Mack 763f0b5e634SDaniel Mack 764f0b5e634SDaniel Mack /* 765f0b5e634SDaniel Mack * Feature Unit 766f0b5e634SDaniel Mack */ 767f0b5e634SDaniel Mack 768f0b5e634SDaniel Mack /* feature unit control information */ 769f0b5e634SDaniel Mack struct usb_feature_control_info { 770f0b5e634SDaniel Mack const char *name; 771f0b5e634SDaniel Mack unsigned int type; /* control type (mute, volume, etc.) */ 772f0b5e634SDaniel Mack }; 773f0b5e634SDaniel Mack 774f0b5e634SDaniel Mack static struct usb_feature_control_info audio_feature_info[] = { 775f0b5e634SDaniel Mack { "Mute", USB_MIXER_INV_BOOLEAN }, 776f0b5e634SDaniel Mack { "Volume", USB_MIXER_S16 }, 777f0b5e634SDaniel Mack { "Tone Control - Bass", USB_MIXER_S8 }, 778f0b5e634SDaniel Mack { "Tone Control - Mid", USB_MIXER_S8 }, 779f0b5e634SDaniel Mack { "Tone Control - Treble", USB_MIXER_S8 }, 780f0b5e634SDaniel Mack { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */ 781f0b5e634SDaniel Mack { "Auto Gain Control", USB_MIXER_BOOLEAN }, 782f0b5e634SDaniel Mack { "Delay Control", USB_MIXER_U16 }, 783f0b5e634SDaniel Mack { "Bass Boost", USB_MIXER_BOOLEAN }, 784f0b5e634SDaniel Mack { "Loudness", USB_MIXER_BOOLEAN }, 7852e0281d1SDaniel Mack /* UAC2 specific */ 7862e0281d1SDaniel Mack { "Input Gain Control", USB_MIXER_U16 }, 7872e0281d1SDaniel Mack { "Input Gain Pad Control", USB_MIXER_BOOLEAN }, 7882e0281d1SDaniel Mack { "Phase Inverter Control", USB_MIXER_BOOLEAN }, 789f0b5e634SDaniel Mack }; 790f0b5e634SDaniel Mack 791f0b5e634SDaniel Mack 792f0b5e634SDaniel Mack /* private_free callback */ 793f0b5e634SDaniel Mack static void usb_mixer_elem_free(struct snd_kcontrol *kctl) 794f0b5e634SDaniel Mack { 795f0b5e634SDaniel Mack kfree(kctl->private_data); 796f0b5e634SDaniel Mack kctl->private_data = NULL; 797f0b5e634SDaniel Mack } 798f0b5e634SDaniel Mack 799f0b5e634SDaniel Mack 800f0b5e634SDaniel Mack /* 801f0b5e634SDaniel Mack * interface to ALSA control for feature/mixer units 802f0b5e634SDaniel Mack */ 803f0b5e634SDaniel Mack 804dcaaf9f2STakashi Iwai /* volume control quirks */ 805dcaaf9f2STakashi Iwai static void volume_control_quirks(struct usb_mixer_elem_info *cval, 806dcaaf9f2STakashi Iwai struct snd_kcontrol *kctl) 807dcaaf9f2STakashi Iwai { 808dcaaf9f2STakashi Iwai switch (cval->mixer->chip->usb_id) { 809d50ed624SEldad Zack case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ 810d50ed624SEldad Zack if (strcmp(kctl->id.name, "Effect Duration") == 0) { 811d50ed624SEldad Zack cval->min = 0x0000; 812d50ed624SEldad Zack cval->max = 0xffff; 813d50ed624SEldad Zack cval->res = 0x00e6; 814d50ed624SEldad Zack break; 815d50ed624SEldad Zack } 816d50ed624SEldad Zack if (strcmp(kctl->id.name, "Effect Volume") == 0 || 817d50ed624SEldad Zack strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { 818d50ed624SEldad Zack cval->min = 0x00; 819d50ed624SEldad Zack cval->max = 0xff; 820d50ed624SEldad Zack break; 821d50ed624SEldad Zack } 822d50ed624SEldad Zack if (strstr(kctl->id.name, "Effect Return") != NULL) { 823d50ed624SEldad Zack cval->min = 0xb706; 824d50ed624SEldad Zack cval->max = 0xff7b; 825d50ed624SEldad Zack cval->res = 0x0073; 826d50ed624SEldad Zack break; 827d50ed624SEldad Zack } 828d50ed624SEldad Zack if ((strstr(kctl->id.name, "Playback Volume") != NULL) || 829d50ed624SEldad Zack (strstr(kctl->id.name, "Effect Send") != NULL)) { 830d50ed624SEldad Zack cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ 831d50ed624SEldad Zack cval->max = 0xfcfe; 832d50ed624SEldad Zack cval->res = 0x0073; 833d50ed624SEldad Zack } 834d50ed624SEldad Zack break; 835d50ed624SEldad Zack 836d34bf148SFelix Homann case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ 837d34bf148SFelix Homann case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ 838d34bf148SFelix Homann if (strcmp(kctl->id.name, "Effect Duration") == 0) { 839d34bf148SFelix Homann snd_printk(KERN_INFO 840d34bf148SFelix Homann "usb-audio: set quirk for FTU Effect Duration\n"); 841d34bf148SFelix Homann cval->min = 0x0000; 842d34bf148SFelix Homann cval->max = 0x7f00; 843d34bf148SFelix Homann cval->res = 0x0100; 844d34bf148SFelix Homann break; 845d34bf148SFelix Homann } 846d34bf148SFelix Homann if (strcmp(kctl->id.name, "Effect Volume") == 0 || 847d34bf148SFelix Homann strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { 848d34bf148SFelix Homann snd_printk(KERN_INFO 849d34bf148SFelix Homann "usb-audio: set quirks for FTU Effect Feedback/Volume\n"); 850d34bf148SFelix Homann cval->min = 0x00; 851d34bf148SFelix Homann cval->max = 0x7f; 852d34bf148SFelix Homann break; 853d34bf148SFelix Homann } 854d34bf148SFelix Homann break; 855d34bf148SFelix Homann 856dcaaf9f2STakashi Iwai case USB_ID(0x0471, 0x0101): 857dcaaf9f2STakashi Iwai case USB_ID(0x0471, 0x0104): 858dcaaf9f2STakashi Iwai case USB_ID(0x0471, 0x0105): 859dcaaf9f2STakashi Iwai case USB_ID(0x0672, 0x1041): 860dcaaf9f2STakashi Iwai /* quirk for UDA1321/N101. 861dcaaf9f2STakashi Iwai * note that detection between firmware 2.1.1.7 (N101) 862dcaaf9f2STakashi Iwai * and later 2.1.1.21 is not very clear from datasheets. 863dcaaf9f2STakashi Iwai * I hope that the min value is -15360 for newer firmware --jk 864dcaaf9f2STakashi Iwai */ 865dcaaf9f2STakashi Iwai if (!strcmp(kctl->id.name, "PCM Playback Volume") && 866dcaaf9f2STakashi Iwai cval->min == -15616) { 867dcaaf9f2STakashi Iwai snd_printk(KERN_INFO 868dcaaf9f2STakashi Iwai "set volume quirk for UDA1321/N101 chip\n"); 869dcaaf9f2STakashi Iwai cval->max = -256; 870dcaaf9f2STakashi Iwai } 871dcaaf9f2STakashi Iwai break; 872dcaaf9f2STakashi Iwai 873dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x09a4): 874dcaaf9f2STakashi Iwai if (!strcmp(kctl->id.name, "Mic Capture Volume")) { 875dcaaf9f2STakashi Iwai snd_printk(KERN_INFO 876dcaaf9f2STakashi Iwai "set volume quirk for QuickCam E3500\n"); 877dcaaf9f2STakashi Iwai cval->min = 6080; 878dcaaf9f2STakashi Iwai cval->max = 8768; 879dcaaf9f2STakashi Iwai cval->res = 192; 880dcaaf9f2STakashi Iwai } 881dcaaf9f2STakashi Iwai break; 882dcaaf9f2STakashi Iwai 883dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x0808): 884dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x0809): 88555c0008bSAlexey Fisher case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ 886dcaaf9f2STakashi Iwai case USB_ID(0x046d, 0x0991): 887dcaaf9f2STakashi Iwai /* Most audio usb devices lie about volume resolution. 888dcaaf9f2STakashi Iwai * Most Logitech webcams have res = 384. 889dcaaf9f2STakashi Iwai * Proboly there is some logitech magic behind this number --fishor 890dcaaf9f2STakashi Iwai */ 891dcaaf9f2STakashi Iwai if (!strcmp(kctl->id.name, "Mic Capture Volume")) { 892dcaaf9f2STakashi Iwai snd_printk(KERN_INFO 893dcaaf9f2STakashi Iwai "set resolution quirk: cval->res = 384\n"); 894dcaaf9f2STakashi Iwai cval->res = 384; 895dcaaf9f2STakashi Iwai } 896dcaaf9f2STakashi Iwai break; 897dcaaf9f2STakashi Iwai 898dcaaf9f2STakashi Iwai } 899dcaaf9f2STakashi Iwai } 900dcaaf9f2STakashi Iwai 901f0b5e634SDaniel Mack /* 902f0b5e634SDaniel Mack * retrieve the minimum and maximum values for the specified control 903f0b5e634SDaniel Mack */ 904dcaaf9f2STakashi Iwai static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, 905dcaaf9f2STakashi Iwai int default_min, struct snd_kcontrol *kctl) 906f0b5e634SDaniel Mack { 907f0b5e634SDaniel Mack /* for failsafe */ 908f0b5e634SDaniel Mack cval->min = default_min; 909f0b5e634SDaniel Mack cval->max = cval->min + 1; 910f0b5e634SDaniel Mack cval->res = 1; 911f0b5e634SDaniel Mack cval->dBmin = cval->dBmax = 0; 912f0b5e634SDaniel Mack 913f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 914f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) { 915f0b5e634SDaniel Mack cval->initialized = 1; 916f0b5e634SDaniel Mack } else { 917f0b5e634SDaniel Mack int minchn = 0; 918f0b5e634SDaniel Mack if (cval->cmask) { 919f0b5e634SDaniel Mack int i; 920f0b5e634SDaniel Mack for (i = 0; i < MAX_CHANNELS; i++) 921f0b5e634SDaniel Mack if (cval->cmask & (1 << i)) { 922f0b5e634SDaniel Mack minchn = i + 1; 923f0b5e634SDaniel Mack break; 924f0b5e634SDaniel Mack } 925f0b5e634SDaniel Mack } 926f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || 927f0b5e634SDaniel Mack get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { 928f0b5e634SDaniel Mack snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", 9291a4e34e6STakashi Iwai cval->id, snd_usb_ctrl_intf(cval->mixer->chip), cval->control, cval->id); 930f0b5e634SDaniel Mack return -EINVAL; 931f0b5e634SDaniel Mack } 932f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { 933f0b5e634SDaniel Mack cval->res = 1; 934f0b5e634SDaniel Mack } else { 935f0b5e634SDaniel Mack int last_valid_res = cval->res; 936f0b5e634SDaniel Mack 937f0b5e634SDaniel Mack while (cval->res > 1) { 938f0b5e634SDaniel Mack if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, 939f0b5e634SDaniel Mack (cval->control << 8) | minchn, cval->res / 2) < 0) 940f0b5e634SDaniel Mack break; 941f0b5e634SDaniel Mack cval->res /= 2; 942f0b5e634SDaniel Mack } 943f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) 944f0b5e634SDaniel Mack cval->res = last_valid_res; 945f0b5e634SDaniel Mack } 946f0b5e634SDaniel Mack if (cval->res == 0) 947f0b5e634SDaniel Mack cval->res = 1; 948f0b5e634SDaniel Mack 949f0b5e634SDaniel Mack /* Additional checks for the proper resolution 950f0b5e634SDaniel Mack * 951f0b5e634SDaniel Mack * Some devices report smaller resolutions than actually 952f0b5e634SDaniel Mack * reacting. They don't return errors but simply clip 953f0b5e634SDaniel Mack * to the lower aligned value. 954f0b5e634SDaniel Mack */ 955f0b5e634SDaniel Mack if (cval->min + cval->res < cval->max) { 956f0b5e634SDaniel Mack int last_valid_res = cval->res; 957f0b5e634SDaniel Mack int saved, test, check; 958f0b5e634SDaniel Mack get_cur_mix_raw(cval, minchn, &saved); 959f0b5e634SDaniel Mack for (;;) { 960f0b5e634SDaniel Mack test = saved; 961f0b5e634SDaniel Mack if (test < cval->max) 962f0b5e634SDaniel Mack test += cval->res; 963f0b5e634SDaniel Mack else 964f0b5e634SDaniel Mack test -= cval->res; 965f0b5e634SDaniel Mack if (test < cval->min || test > cval->max || 966f0b5e634SDaniel Mack set_cur_mix_value(cval, minchn, 0, test) || 967f0b5e634SDaniel Mack get_cur_mix_raw(cval, minchn, &check)) { 968f0b5e634SDaniel Mack cval->res = last_valid_res; 969f0b5e634SDaniel Mack break; 970f0b5e634SDaniel Mack } 971f0b5e634SDaniel Mack if (test == check) 972f0b5e634SDaniel Mack break; 973f0b5e634SDaniel Mack cval->res *= 2; 974f0b5e634SDaniel Mack } 975f0b5e634SDaniel Mack set_cur_mix_value(cval, minchn, 0, saved); 976f0b5e634SDaniel Mack } 977f0b5e634SDaniel Mack 978f0b5e634SDaniel Mack cval->initialized = 1; 979f0b5e634SDaniel Mack } 980f0b5e634SDaniel Mack 981dcaaf9f2STakashi Iwai if (kctl) 982dcaaf9f2STakashi Iwai volume_control_quirks(cval, kctl); 983dcaaf9f2STakashi Iwai 984f0b5e634SDaniel Mack /* USB descriptions contain the dB scale in 1/256 dB unit 985f0b5e634SDaniel Mack * while ALSA TLV contains in 1/100 dB unit 986f0b5e634SDaniel Mack */ 987f0b5e634SDaniel Mack cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; 988f0b5e634SDaniel Mack cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; 989f0b5e634SDaniel Mack if (cval->dBmin > cval->dBmax) { 990f0b5e634SDaniel Mack /* something is wrong; assume it's either from/to 0dB */ 991f0b5e634SDaniel Mack if (cval->dBmin < 0) 992f0b5e634SDaniel Mack cval->dBmax = 0; 993f0b5e634SDaniel Mack else if (cval->dBmin > 0) 994f0b5e634SDaniel Mack cval->dBmin = 0; 995f0b5e634SDaniel Mack if (cval->dBmin > cval->dBmax) { 996f0b5e634SDaniel Mack /* totally crap, return an error */ 997f0b5e634SDaniel Mack return -EINVAL; 998f0b5e634SDaniel Mack } 999f0b5e634SDaniel Mack } 1000f0b5e634SDaniel Mack 1001f0b5e634SDaniel Mack return 0; 1002f0b5e634SDaniel Mack } 1003f0b5e634SDaniel Mack 1004dcaaf9f2STakashi Iwai #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) 1005f0b5e634SDaniel Mack 1006f0b5e634SDaniel Mack /* get a feature/mixer unit info */ 1007f0b5e634SDaniel Mack static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 1008f0b5e634SDaniel Mack { 1009f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1010f0b5e634SDaniel Mack 1011f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 1012f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) 1013f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 1014f0b5e634SDaniel Mack else 1015f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 1016f0b5e634SDaniel Mack uinfo->count = cval->channels; 1017f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 1018f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) { 1019f0b5e634SDaniel Mack uinfo->value.integer.min = 0; 1020f0b5e634SDaniel Mack uinfo->value.integer.max = 1; 1021f0b5e634SDaniel Mack } else { 10229fcd0ab1STakashi Iwai if (!cval->initialized) { 1023dcaaf9f2STakashi Iwai get_min_max_with_quirks(cval, 0, kcontrol); 10249fcd0ab1STakashi Iwai if (cval->initialized && cval->dBmin >= cval->dBmax) { 10259fcd0ab1STakashi Iwai kcontrol->vd[0].access &= 10269fcd0ab1STakashi Iwai ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | 10279fcd0ab1STakashi Iwai SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); 10289fcd0ab1STakashi Iwai snd_ctl_notify(cval->mixer->chip->card, 10299fcd0ab1STakashi Iwai SNDRV_CTL_EVENT_MASK_INFO, 10309fcd0ab1STakashi Iwai &kcontrol->id); 10319fcd0ab1STakashi Iwai } 10329fcd0ab1STakashi Iwai } 1033f0b5e634SDaniel Mack uinfo->value.integer.min = 0; 1034f0b5e634SDaniel Mack uinfo->value.integer.max = 1035f0b5e634SDaniel Mack (cval->max - cval->min + cval->res - 1) / cval->res; 1036f0b5e634SDaniel Mack } 1037f0b5e634SDaniel Mack return 0; 1038f0b5e634SDaniel Mack } 1039f0b5e634SDaniel Mack 1040f0b5e634SDaniel Mack /* get the current value from feature/mixer unit */ 1041f0b5e634SDaniel Mack static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1042f0b5e634SDaniel Mack { 1043f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1044f0b5e634SDaniel Mack int c, cnt, val, err; 1045f0b5e634SDaniel Mack 1046f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = cval->min; 1047f0b5e634SDaniel Mack if (cval->cmask) { 1048f0b5e634SDaniel Mack cnt = 0; 1049f0b5e634SDaniel Mack for (c = 0; c < MAX_CHANNELS; c++) { 1050f0b5e634SDaniel Mack if (!(cval->cmask & (1 << c))) 1051f0b5e634SDaniel Mack continue; 1052f0b5e634SDaniel Mack err = get_cur_mix_value(cval, c + 1, cnt, &val); 1053f0b5e634SDaniel Mack if (err < 0) 1054f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 1055f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1056f0b5e634SDaniel Mack ucontrol->value.integer.value[cnt] = val; 1057f0b5e634SDaniel Mack cnt++; 1058f0b5e634SDaniel Mack } 1059f0b5e634SDaniel Mack return 0; 1060f0b5e634SDaniel Mack } else { 1061f0b5e634SDaniel Mack /* master channel */ 1062f0b5e634SDaniel Mack err = get_cur_mix_value(cval, 0, 0, &val); 1063f0b5e634SDaniel Mack if (err < 0) 1064f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 1065f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1066f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = val; 1067f0b5e634SDaniel Mack } 1068f0b5e634SDaniel Mack return 0; 1069f0b5e634SDaniel Mack } 1070f0b5e634SDaniel Mack 1071f0b5e634SDaniel Mack /* put the current value to feature/mixer unit */ 1072f0b5e634SDaniel Mack static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1073f0b5e634SDaniel Mack { 1074f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1075f0b5e634SDaniel Mack int c, cnt, val, oval, err; 1076f0b5e634SDaniel Mack int changed = 0; 1077f0b5e634SDaniel Mack 1078f0b5e634SDaniel Mack if (cval->cmask) { 1079f0b5e634SDaniel Mack cnt = 0; 1080f0b5e634SDaniel Mack for (c = 0; c < MAX_CHANNELS; c++) { 1081f0b5e634SDaniel Mack if (!(cval->cmask & (1 << c))) 1082f0b5e634SDaniel Mack continue; 1083f0b5e634SDaniel Mack err = get_cur_mix_value(cval, c + 1, cnt, &oval); 1084f0b5e634SDaniel Mack if (err < 0) 1085f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 1086f0b5e634SDaniel Mack val = ucontrol->value.integer.value[cnt]; 1087f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1088f0b5e634SDaniel Mack if (oval != val) { 1089f0b5e634SDaniel Mack set_cur_mix_value(cval, c + 1, cnt, val); 1090f0b5e634SDaniel Mack changed = 1; 1091f0b5e634SDaniel Mack } 1092f0b5e634SDaniel Mack cnt++; 1093f0b5e634SDaniel Mack } 1094f0b5e634SDaniel Mack } else { 1095f0b5e634SDaniel Mack /* master channel */ 1096f0b5e634SDaniel Mack err = get_cur_mix_value(cval, 0, 0, &oval); 1097f0b5e634SDaniel Mack if (err < 0) 1098f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 1099f0b5e634SDaniel Mack val = ucontrol->value.integer.value[0]; 1100f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1101f0b5e634SDaniel Mack if (val != oval) { 1102f0b5e634SDaniel Mack set_cur_mix_value(cval, 0, 0, val); 1103f0b5e634SDaniel Mack changed = 1; 1104f0b5e634SDaniel Mack } 1105f0b5e634SDaniel Mack } 1106f0b5e634SDaniel Mack return changed; 1107f0b5e634SDaniel Mack } 1108f0b5e634SDaniel Mack 1109f0b5e634SDaniel Mack static struct snd_kcontrol_new usb_feature_unit_ctl = { 1110f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1111f0b5e634SDaniel Mack .name = "", /* will be filled later manually */ 1112f0b5e634SDaniel Mack .info = mixer_ctl_feature_info, 1113f0b5e634SDaniel Mack .get = mixer_ctl_feature_get, 1114f0b5e634SDaniel Mack .put = mixer_ctl_feature_put, 1115f0b5e634SDaniel Mack }; 1116f0b5e634SDaniel Mack 111723caaf19SDaniel Mack /* the read-only variant */ 111823caaf19SDaniel Mack static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { 111923caaf19SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 112023caaf19SDaniel Mack .name = "", /* will be filled later manually */ 112123caaf19SDaniel Mack .info = mixer_ctl_feature_info, 112223caaf19SDaniel Mack .get = mixer_ctl_feature_get, 112323caaf19SDaniel Mack .put = NULL, 112423caaf19SDaniel Mack }; 112523caaf19SDaniel Mack 11269e38658fSDaniel Mack /* This symbol is exported in order to allow the mixer quirks to 11279e38658fSDaniel Mack * hook up to the standard feature unit control mechanism */ 11289e38658fSDaniel Mack struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; 1129f0b5e634SDaniel Mack 1130f0b5e634SDaniel Mack /* 1131f0b5e634SDaniel Mack * build a feature control 1132f0b5e634SDaniel Mack */ 1133f0b5e634SDaniel Mack 1134f0b5e634SDaniel Mack static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) 1135f0b5e634SDaniel Mack { 1136f0b5e634SDaniel Mack return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); 1137f0b5e634SDaniel Mack } 1138f0b5e634SDaniel Mack 113999fc8645SDaniel Mack static void build_feature_ctl(struct mixer_build *state, void *raw_desc, 1140f0b5e634SDaniel Mack unsigned int ctl_mask, int control, 114123caaf19SDaniel Mack struct usb_audio_term *iterm, int unitid, 1142a6a33259SDaniel Mack int readonly_mask) 1143f0b5e634SDaniel Mack { 114499fc8645SDaniel Mack struct uac_feature_unit_descriptor *desc = raw_desc; 1145f0b5e634SDaniel Mack unsigned int len = 0; 1146f0b5e634SDaniel Mack int mapped_name = 0; 114799fc8645SDaniel Mack int nameid = uac_feature_unit_iFeature(desc); 1148f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1149f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1150f0b5e634SDaniel Mack const struct usbmix_name_map *map; 115180acefffSAlexey Fisher unsigned int range; 1152f0b5e634SDaniel Mack 1153f0b5e634SDaniel Mack control++; /* change from zero-based to 1-based value */ 1154f0b5e634SDaniel Mack 115565f25da4SDaniel Mack if (control == UAC_FU_GRAPHIC_EQUALIZER) { 1156f0b5e634SDaniel Mack /* FIXME: not supported yet */ 1157f0b5e634SDaniel Mack return; 1158f0b5e634SDaniel Mack } 1159f0b5e634SDaniel Mack 1160f0b5e634SDaniel Mack map = find_map(state, unitid, control); 1161f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1162f0b5e634SDaniel Mack return; 1163f0b5e634SDaniel Mack 1164f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1165f0b5e634SDaniel Mack if (! cval) { 1166f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1167f0b5e634SDaniel Mack return; 1168f0b5e634SDaniel Mack } 1169f0b5e634SDaniel Mack cval->mixer = state->mixer; 1170f0b5e634SDaniel Mack cval->id = unitid; 1171f0b5e634SDaniel Mack cval->control = control; 1172f0b5e634SDaniel Mack cval->cmask = ctl_mask; 1173f0b5e634SDaniel Mack cval->val_type = audio_feature_info[control-1].type; 1174a6a33259SDaniel Mack if (ctl_mask == 0) { 1175f0b5e634SDaniel Mack cval->channels = 1; /* master channel */ 1176a6a33259SDaniel Mack cval->master_readonly = readonly_mask; 1177a6a33259SDaniel Mack } else { 1178f0b5e634SDaniel Mack int i, c = 0; 1179f0b5e634SDaniel Mack for (i = 0; i < 16; i++) 1180f0b5e634SDaniel Mack if (ctl_mask & (1 << i)) 1181f0b5e634SDaniel Mack c++; 1182f0b5e634SDaniel Mack cval->channels = c; 1183a6a33259SDaniel Mack cval->ch_readonly = readonly_mask; 1184f0b5e634SDaniel Mack } 1185f0b5e634SDaniel Mack 1186a6a33259SDaniel Mack /* if all channels in the mask are marked read-only, make the control 1187a6a33259SDaniel Mack * read-only. set_cur_mix_value() will check the mask again and won't 1188a6a33259SDaniel Mack * issue write commands to read-only channels. */ 1189a6a33259SDaniel Mack if (cval->channels == readonly_mask) 119023caaf19SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); 119123caaf19SDaniel Mack else 1192f0b5e634SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 119323caaf19SDaniel Mack 1194f0b5e634SDaniel Mack if (! kctl) { 1195f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1196f0b5e634SDaniel Mack kfree(cval); 1197f0b5e634SDaniel Mack return; 1198f0b5e634SDaniel Mack } 1199f0b5e634SDaniel Mack kctl->private_free = usb_mixer_elem_free; 1200f0b5e634SDaniel Mack 1201f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1202f0b5e634SDaniel Mack mapped_name = len != 0; 1203f0b5e634SDaniel Mack if (! len && nameid) 1204f0b5e634SDaniel Mack len = snd_usb_copy_string_desc(state, nameid, 1205f0b5e634SDaniel Mack kctl->id.name, sizeof(kctl->id.name)); 1206f0b5e634SDaniel Mack 1207f0b5e634SDaniel Mack switch (control) { 120865f25da4SDaniel Mack case UAC_FU_MUTE: 120965f25da4SDaniel Mack case UAC_FU_VOLUME: 1210f0b5e634SDaniel Mack /* determine the control name. the rule is: 1211f0b5e634SDaniel Mack * - if a name id is given in descriptor, use it. 1212f0b5e634SDaniel Mack * - if the connected input can be determined, then use the name 1213f0b5e634SDaniel Mack * of terminal type. 1214f0b5e634SDaniel Mack * - if the connected output can be determined, use it. 1215f0b5e634SDaniel Mack * - otherwise, anonymous name. 1216f0b5e634SDaniel Mack */ 1217f0b5e634SDaniel Mack if (! len) { 1218f0b5e634SDaniel Mack len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); 1219f0b5e634SDaniel Mack if (! len) 1220f0b5e634SDaniel Mack len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); 1221f0b5e634SDaniel Mack if (! len) 1222f0b5e634SDaniel Mack len = snprintf(kctl->id.name, sizeof(kctl->id.name), 1223f0b5e634SDaniel Mack "Feature %d", unitid); 1224f0b5e634SDaniel Mack } 1225f0b5e634SDaniel Mack /* determine the stream direction: 1226f0b5e634SDaniel Mack * if the connected output is USB stream, then it's likely a 1227f0b5e634SDaniel Mack * capture stream. otherwise it should be playback (hopefully :) 1228f0b5e634SDaniel Mack */ 1229f0b5e634SDaniel Mack if (! mapped_name && ! (state->oterm.type >> 16)) { 1230f0b5e634SDaniel Mack if ((state->oterm.type & 0xff00) == 0x0100) { 1231f0b5e634SDaniel Mack len = append_ctl_name(kctl, " Capture"); 1232f0b5e634SDaniel Mack } else { 1233f0b5e634SDaniel Mack len = append_ctl_name(kctl, " Playback"); 1234f0b5e634SDaniel Mack } 1235f0b5e634SDaniel Mack } 123665f25da4SDaniel Mack append_ctl_name(kctl, control == UAC_FU_MUTE ? 1237f0b5e634SDaniel Mack " Switch" : " Volume"); 1238e182534dSTakashi Iwai break; 1239e182534dSTakashi Iwai default: 1240e182534dSTakashi Iwai if (! len) 1241e182534dSTakashi Iwai strlcpy(kctl->id.name, audio_feature_info[control-1].name, 1242e182534dSTakashi Iwai sizeof(kctl->id.name)); 1243e182534dSTakashi Iwai break; 1244e182534dSTakashi Iwai } 1245e182534dSTakashi Iwai 1246e182534dSTakashi Iwai /* get min/max values */ 1247e182534dSTakashi Iwai get_min_max_with_quirks(cval, 0, kctl); 1248e182534dSTakashi Iwai 124965f25da4SDaniel Mack if (control == UAC_FU_VOLUME) { 125059bb7f0eSTakashi Iwai check_mapped_dB(map, cval); 125138b65190STakashi Iwai if (cval->dBmin < cval->dBmax || !cval->initialized) { 1252285de9c0SFelix Homann kctl->tlv.c = snd_usb_mixer_vol_tlv; 1253f0b5e634SDaniel Mack kctl->vd[0].access |= 1254f0b5e634SDaniel Mack SNDRV_CTL_ELEM_ACCESS_TLV_READ | 1255f0b5e634SDaniel Mack SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; 125659bb7f0eSTakashi Iwai } 1257f0b5e634SDaniel Mack } 1258f0b5e634SDaniel Mack 125980acefffSAlexey Fisher range = (cval->max - cval->min) / cval->res; 126080acefffSAlexey Fisher /* Are there devices with volume range more than 255? I use a bit more 126180acefffSAlexey Fisher * to be sure. 384 is a resolution magic number found on Logitech 126280acefffSAlexey Fisher * devices. It will definitively catch all buggy Logitech devices. 126380acefffSAlexey Fisher */ 126480acefffSAlexey Fisher if (range > 384) { 126580acefffSAlexey Fisher snd_printk(KERN_WARNING "usb_audio: Warning! Unlikely big " 126680acefffSAlexey Fisher "volume range (=%u), cval->res is probably wrong.", 126780acefffSAlexey Fisher range); 126880acefffSAlexey Fisher snd_printk(KERN_WARNING "usb_audio: [%d] FU [%s] ch = %d, " 126980acefffSAlexey Fisher "val = %d/%d/%d", cval->id, 127080acefffSAlexey Fisher kctl->id.name, cval->channels, 127180acefffSAlexey Fisher cval->min, cval->max, cval->res); 127280acefffSAlexey Fisher } 127380acefffSAlexey Fisher 1274f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", 1275f0b5e634SDaniel Mack cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); 1276ef9d5970SDaniel Mack snd_usb_mixer_add_control(state->mixer, kctl); 1277f0b5e634SDaniel Mack } 1278f0b5e634SDaniel Mack 1279f0b5e634SDaniel Mack 1280f0b5e634SDaniel Mack 1281f0b5e634SDaniel Mack /* 1282f0b5e634SDaniel Mack * parse a feature unit 1283f0b5e634SDaniel Mack * 128425985edcSLucas De Marchi * most of controls are defined here. 1285f0b5e634SDaniel Mack */ 1286f0b5e634SDaniel Mack static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr) 1287f0b5e634SDaniel Mack { 1288f0b5e634SDaniel Mack int channels, i, j; 1289f0b5e634SDaniel Mack struct usb_audio_term iterm; 1290f0b5e634SDaniel Mack unsigned int master_bits, first_ch_bits; 1291f0b5e634SDaniel Mack int err, csize; 129223caaf19SDaniel Mack struct uac_feature_unit_descriptor *hdr = _ftr; 129323caaf19SDaniel Mack __u8 *bmaControls; 1294f0b5e634SDaniel Mack 129523caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 129623caaf19SDaniel Mack csize = hdr->bControlSize; 129760c961a9SNicolai Krakowiak if (!csize) { 129860c961a9SNicolai Krakowiak snd_printdd(KERN_ERR "usbaudio: unit %u: " 129960c961a9SNicolai Krakowiak "invalid bControlSize == 0\n", unitid); 130060c961a9SNicolai Krakowiak return -EINVAL; 130160c961a9SNicolai Krakowiak } 130223caaf19SDaniel Mack channels = (hdr->bLength - 7) / csize - 1; 130323caaf19SDaniel Mack bmaControls = hdr->bmaControls; 130423caaf19SDaniel Mack } else { 130523caaf19SDaniel Mack struct uac2_feature_unit_descriptor *ftr = _ftr; 130623caaf19SDaniel Mack csize = 4; 1307e8d0fee7SDaniel Mack channels = (hdr->bLength - 6) / 4 - 1; 130823caaf19SDaniel Mack bmaControls = ftr->bmaControls; 130923caaf19SDaniel Mack } 131023caaf19SDaniel Mack 131123caaf19SDaniel Mack if (hdr->bLength < 7 || !csize || hdr->bLength < 7 + csize) { 1312f0b5e634SDaniel Mack snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid); 1313f0b5e634SDaniel Mack return -EINVAL; 1314f0b5e634SDaniel Mack } 1315f0b5e634SDaniel Mack 1316f0b5e634SDaniel Mack /* parse the source unit */ 131723caaf19SDaniel Mack if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0) 1318f0b5e634SDaniel Mack return err; 1319f0b5e634SDaniel Mack 1320f0b5e634SDaniel Mack /* determine the input source type and name */ 132123caaf19SDaniel Mack if (check_input_term(state, hdr->bSourceID, &iterm) < 0) 1322f0b5e634SDaniel Mack return -EINVAL; 1323f0b5e634SDaniel Mack 132423caaf19SDaniel Mack master_bits = snd_usb_combine_bytes(bmaControls, csize); 1325f0b5e634SDaniel Mack /* master configuration quirks */ 1326f0b5e634SDaniel Mack switch (state->chip->usb_id) { 1327f0b5e634SDaniel Mack case USB_ID(0x08bb, 0x2702): 1328f0b5e634SDaniel Mack snd_printk(KERN_INFO 1329f0b5e634SDaniel Mack "usbmixer: master volume quirk for PCM2702 chip\n"); 1330f0b5e634SDaniel Mack /* disable non-functional volume control */ 133165f25da4SDaniel Mack master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); 1332f0b5e634SDaniel Mack break; 1333c1051439SDavid Henningsson case USB_ID(0x1130, 0xf211): 1334c1051439SDavid Henningsson snd_printk(KERN_INFO 1335c1051439SDavid Henningsson "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); 1336c1051439SDavid Henningsson /* disable non-functional volume control */ 1337c1051439SDavid Henningsson channels = 0; 1338c1051439SDavid Henningsson break; 1339c1051439SDavid Henningsson 1340f0b5e634SDaniel Mack } 1341f0b5e634SDaniel Mack if (channels > 0) 134223caaf19SDaniel Mack first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); 1343f0b5e634SDaniel Mack else 1344f0b5e634SDaniel Mack first_ch_bits = 0; 134523caaf19SDaniel Mack 134623caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 1347f0b5e634SDaniel Mack /* check all control types */ 1348f0b5e634SDaniel Mack for (i = 0; i < 10; i++) { 1349f0b5e634SDaniel Mack unsigned int ch_bits = 0; 1350f0b5e634SDaniel Mack for (j = 0; j < channels; j++) { 135123caaf19SDaniel Mack unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); 1352f0b5e634SDaniel Mack if (mask & (1 << i)) 1353f0b5e634SDaniel Mack ch_bits |= (1 << j); 1354f0b5e634SDaniel Mack } 135523caaf19SDaniel Mack /* audio class v1 controls are never read-only */ 1356f0b5e634SDaniel Mack if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ 135723caaf19SDaniel Mack build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0); 1358f0b5e634SDaniel Mack if (master_bits & (1 << i)) 135923caaf19SDaniel Mack build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0); 136023caaf19SDaniel Mack } 136123caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 1362d09c06c6STakashi Iwai for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { 136323caaf19SDaniel Mack unsigned int ch_bits = 0; 136423caaf19SDaniel Mack unsigned int ch_read_only = 0; 136523caaf19SDaniel Mack 136623caaf19SDaniel Mack for (j = 0; j < channels; j++) { 136723caaf19SDaniel Mack unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); 1368dcbe7bcfSDaniel Mack if (uac2_control_is_readable(mask, i)) { 136923caaf19SDaniel Mack ch_bits |= (1 << j); 1370dcbe7bcfSDaniel Mack if (!uac2_control_is_writeable(mask, i)) 137123caaf19SDaniel Mack ch_read_only |= (1 << j); 137223caaf19SDaniel Mack } 137323caaf19SDaniel Mack } 137423caaf19SDaniel Mack 1375a6a33259SDaniel Mack /* NOTE: build_feature_ctl() will mark the control read-only if all channels 1376a6a33259SDaniel Mack * are marked read-only in the descriptors. Otherwise, the control will be 1377a6a33259SDaniel Mack * reported as writeable, but the driver will not actually issue a write 1378a6a33259SDaniel Mack * command for read-only channels */ 137923caaf19SDaniel Mack if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ 1380a6a33259SDaniel Mack build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, ch_read_only); 1381dcbe7bcfSDaniel Mack if (uac2_control_is_readable(master_bits, i)) 138223caaf19SDaniel Mack build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 1383dcbe7bcfSDaniel Mack !uac2_control_is_writeable(master_bits, i)); 138423caaf19SDaniel Mack } 1385f0b5e634SDaniel Mack } 1386f0b5e634SDaniel Mack 1387f0b5e634SDaniel Mack return 0; 1388f0b5e634SDaniel Mack } 1389f0b5e634SDaniel Mack 1390f0b5e634SDaniel Mack 1391f0b5e634SDaniel Mack /* 1392f0b5e634SDaniel Mack * Mixer Unit 1393f0b5e634SDaniel Mack */ 1394f0b5e634SDaniel Mack 1395f0b5e634SDaniel Mack /* 1396f0b5e634SDaniel Mack * build a mixer unit control 1397f0b5e634SDaniel Mack * 1398f0b5e634SDaniel Mack * the callbacks are identical with feature unit. 1399f0b5e634SDaniel Mack * input channel number (zero based) is given in control field instead. 1400f0b5e634SDaniel Mack */ 1401f0b5e634SDaniel Mack 140299fc8645SDaniel Mack static void build_mixer_unit_ctl(struct mixer_build *state, 140399fc8645SDaniel Mack struct uac_mixer_unit_descriptor *desc, 1404f0b5e634SDaniel Mack int in_pin, int in_ch, int unitid, 1405f0b5e634SDaniel Mack struct usb_audio_term *iterm) 1406f0b5e634SDaniel Mack { 1407f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 140899fc8645SDaniel Mack unsigned int num_outs = uac_mixer_unit_bNrChannels(desc); 1409f0b5e634SDaniel Mack unsigned int i, len; 1410f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1411f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1412f0b5e634SDaniel Mack 1413f0b5e634SDaniel Mack map = find_map(state, unitid, 0); 1414f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1415f0b5e634SDaniel Mack return; 1416f0b5e634SDaniel Mack 1417f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1418f0b5e634SDaniel Mack if (! cval) 1419f0b5e634SDaniel Mack return; 1420f0b5e634SDaniel Mack 1421f0b5e634SDaniel Mack cval->mixer = state->mixer; 1422f0b5e634SDaniel Mack cval->id = unitid; 1423f0b5e634SDaniel Mack cval->control = in_ch + 1; /* based on 1 */ 1424f0b5e634SDaniel Mack cval->val_type = USB_MIXER_S16; 1425f0b5e634SDaniel Mack for (i = 0; i < num_outs; i++) { 142623caaf19SDaniel Mack if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) { 1427f0b5e634SDaniel Mack cval->cmask |= (1 << i); 1428f0b5e634SDaniel Mack cval->channels++; 1429f0b5e634SDaniel Mack } 1430f0b5e634SDaniel Mack } 1431f0b5e634SDaniel Mack 1432f0b5e634SDaniel Mack /* get min/max values */ 1433f0b5e634SDaniel Mack get_min_max(cval, 0); 1434f0b5e634SDaniel Mack 1435f0b5e634SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 1436f0b5e634SDaniel Mack if (! kctl) { 1437f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1438f0b5e634SDaniel Mack kfree(cval); 1439f0b5e634SDaniel Mack return; 1440f0b5e634SDaniel Mack } 1441f0b5e634SDaniel Mack kctl->private_free = usb_mixer_elem_free; 1442f0b5e634SDaniel Mack 1443f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1444f0b5e634SDaniel Mack if (! len) 1445f0b5e634SDaniel Mack len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); 1446f0b5e634SDaniel Mack if (! len) 1447f0b5e634SDaniel Mack len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); 1448f0b5e634SDaniel Mack append_ctl_name(kctl, " Volume"); 1449f0b5e634SDaniel Mack 1450f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", 1451f0b5e634SDaniel Mack cval->id, kctl->id.name, cval->channels, cval->min, cval->max); 1452ef9d5970SDaniel Mack snd_usb_mixer_add_control(state->mixer, kctl); 1453f0b5e634SDaniel Mack } 1454f0b5e634SDaniel Mack 1455f0b5e634SDaniel Mack 1456f0b5e634SDaniel Mack /* 1457f0b5e634SDaniel Mack * parse a mixer unit 1458f0b5e634SDaniel Mack */ 145999fc8645SDaniel Mack static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *raw_desc) 1460f0b5e634SDaniel Mack { 146199fc8645SDaniel Mack struct uac_mixer_unit_descriptor *desc = raw_desc; 1462f0b5e634SDaniel Mack struct usb_audio_term iterm; 1463f0b5e634SDaniel Mack int input_pins, num_ins, num_outs; 1464f0b5e634SDaniel Mack int pin, ich, err; 1465f0b5e634SDaniel Mack 146699fc8645SDaniel Mack if (desc->bLength < 11 || ! (input_pins = desc->bNrInPins) || ! (num_outs = uac_mixer_unit_bNrChannels(desc))) { 1467f0b5e634SDaniel Mack snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); 1468f0b5e634SDaniel Mack return -EINVAL; 1469f0b5e634SDaniel Mack } 1470f0b5e634SDaniel Mack /* no bmControls field (e.g. Maya44) -> ignore */ 147199fc8645SDaniel Mack if (desc->bLength <= 10 + input_pins) { 1472f0b5e634SDaniel Mack snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); 1473f0b5e634SDaniel Mack return 0; 1474f0b5e634SDaniel Mack } 1475f0b5e634SDaniel Mack 1476f0b5e634SDaniel Mack num_ins = 0; 1477f0b5e634SDaniel Mack ich = 0; 1478f0b5e634SDaniel Mack for (pin = 0; pin < input_pins; pin++) { 147999fc8645SDaniel Mack err = parse_audio_unit(state, desc->baSourceID[pin]); 1480f0b5e634SDaniel Mack if (err < 0) 1481284a8dd6SMark Hills continue; 148299fc8645SDaniel Mack err = check_input_term(state, desc->baSourceID[pin], &iterm); 1483f0b5e634SDaniel Mack if (err < 0) 1484f0b5e634SDaniel Mack return err; 1485f0b5e634SDaniel Mack num_ins += iterm.channels; 1486f0b5e634SDaniel Mack for (; ich < num_ins; ++ich) { 1487f0b5e634SDaniel Mack int och, ich_has_controls = 0; 1488f0b5e634SDaniel Mack 1489f0b5e634SDaniel Mack for (och = 0; och < num_outs; ++och) { 149023caaf19SDaniel Mack if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), 1491f0b5e634SDaniel Mack ich, och, num_outs)) { 1492f0b5e634SDaniel Mack ich_has_controls = 1; 1493f0b5e634SDaniel Mack break; 1494f0b5e634SDaniel Mack } 1495f0b5e634SDaniel Mack } 1496f0b5e634SDaniel Mack if (ich_has_controls) 1497f0b5e634SDaniel Mack build_mixer_unit_ctl(state, desc, pin, ich, 1498f0b5e634SDaniel Mack unitid, &iterm); 1499f0b5e634SDaniel Mack } 1500f0b5e634SDaniel Mack } 1501f0b5e634SDaniel Mack return 0; 1502f0b5e634SDaniel Mack } 1503f0b5e634SDaniel Mack 1504f0b5e634SDaniel Mack 1505f0b5e634SDaniel Mack /* 1506f0b5e634SDaniel Mack * Processing Unit / Extension Unit 1507f0b5e634SDaniel Mack */ 1508f0b5e634SDaniel Mack 1509f0b5e634SDaniel Mack /* get callback for processing/extension unit */ 1510f0b5e634SDaniel Mack static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1511f0b5e634SDaniel Mack { 1512f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1513f0b5e634SDaniel Mack int err, val; 1514f0b5e634SDaniel Mack 1515f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &val); 1516f0b5e634SDaniel Mack if (err < 0 && cval->mixer->ignore_ctl_error) { 1517f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = cval->min; 1518f0b5e634SDaniel Mack return 0; 1519f0b5e634SDaniel Mack } 1520f0b5e634SDaniel Mack if (err < 0) 1521f0b5e634SDaniel Mack return err; 1522f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1523f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = val; 1524f0b5e634SDaniel Mack return 0; 1525f0b5e634SDaniel Mack } 1526f0b5e634SDaniel Mack 1527f0b5e634SDaniel Mack /* put callback for processing/extension unit */ 1528f0b5e634SDaniel Mack static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1529f0b5e634SDaniel Mack { 1530f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1531f0b5e634SDaniel Mack int val, oval, err; 1532f0b5e634SDaniel Mack 1533f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &oval); 1534f0b5e634SDaniel Mack if (err < 0) { 1535f0b5e634SDaniel Mack if (cval->mixer->ignore_ctl_error) 1536f0b5e634SDaniel Mack return 0; 1537f0b5e634SDaniel Mack return err; 1538f0b5e634SDaniel Mack } 1539f0b5e634SDaniel Mack val = ucontrol->value.integer.value[0]; 1540f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1541f0b5e634SDaniel Mack if (val != oval) { 1542f0b5e634SDaniel Mack set_cur_ctl_value(cval, cval->control << 8, val); 1543f0b5e634SDaniel Mack return 1; 1544f0b5e634SDaniel Mack } 1545f0b5e634SDaniel Mack return 0; 1546f0b5e634SDaniel Mack } 1547f0b5e634SDaniel Mack 1548f0b5e634SDaniel Mack /* alsa control interface for processing/extension unit */ 1549f0b5e634SDaniel Mack static struct snd_kcontrol_new mixer_procunit_ctl = { 1550f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1551f0b5e634SDaniel Mack .name = "", /* will be filled later */ 1552f0b5e634SDaniel Mack .info = mixer_ctl_feature_info, 1553f0b5e634SDaniel Mack .get = mixer_ctl_procunit_get, 1554f0b5e634SDaniel Mack .put = mixer_ctl_procunit_put, 1555f0b5e634SDaniel Mack }; 1556f0b5e634SDaniel Mack 1557f0b5e634SDaniel Mack 1558f0b5e634SDaniel Mack /* 1559f0b5e634SDaniel Mack * predefined data for processing units 1560f0b5e634SDaniel Mack */ 1561f0b5e634SDaniel Mack struct procunit_value_info { 1562f0b5e634SDaniel Mack int control; 1563f0b5e634SDaniel Mack char *suffix; 1564f0b5e634SDaniel Mack int val_type; 1565f0b5e634SDaniel Mack int min_value; 1566f0b5e634SDaniel Mack }; 1567f0b5e634SDaniel Mack 1568f0b5e634SDaniel Mack struct procunit_info { 1569f0b5e634SDaniel Mack int type; 1570f0b5e634SDaniel Mack char *name; 1571f0b5e634SDaniel Mack struct procunit_value_info *values; 1572f0b5e634SDaniel Mack }; 1573f0b5e634SDaniel Mack 1574f0b5e634SDaniel Mack static struct procunit_value_info updown_proc_info[] = { 157565f25da4SDaniel Mack { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 157665f25da4SDaniel Mack { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, 1577f0b5e634SDaniel Mack { 0 } 1578f0b5e634SDaniel Mack }; 1579f0b5e634SDaniel Mack static struct procunit_value_info prologic_proc_info[] = { 158065f25da4SDaniel Mack { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 158165f25da4SDaniel Mack { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, 1582f0b5e634SDaniel Mack { 0 } 1583f0b5e634SDaniel Mack }; 1584f0b5e634SDaniel Mack static struct procunit_value_info threed_enh_proc_info[] = { 158565f25da4SDaniel Mack { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 158665f25da4SDaniel Mack { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 }, 1587f0b5e634SDaniel Mack { 0 } 1588f0b5e634SDaniel Mack }; 1589f0b5e634SDaniel Mack static struct procunit_value_info reverb_proc_info[] = { 159065f25da4SDaniel Mack { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 159165f25da4SDaniel Mack { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, 159265f25da4SDaniel Mack { UAC_REVERB_TIME, "Time", USB_MIXER_U16 }, 159365f25da4SDaniel Mack { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 }, 1594f0b5e634SDaniel Mack { 0 } 1595f0b5e634SDaniel Mack }; 1596f0b5e634SDaniel Mack static struct procunit_value_info chorus_proc_info[] = { 159765f25da4SDaniel Mack { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 159865f25da4SDaniel Mack { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, 159965f25da4SDaniel Mack { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, 160065f25da4SDaniel Mack { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, 1601f0b5e634SDaniel Mack { 0 } 1602f0b5e634SDaniel Mack }; 1603f0b5e634SDaniel Mack static struct procunit_value_info dcr_proc_info[] = { 160465f25da4SDaniel Mack { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN }, 160565f25da4SDaniel Mack { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 }, 160665f25da4SDaniel Mack { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 }, 160765f25da4SDaniel Mack { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, 160865f25da4SDaniel Mack { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 }, 160965f25da4SDaniel Mack { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 }, 1610f0b5e634SDaniel Mack { 0 } 1611f0b5e634SDaniel Mack }; 1612f0b5e634SDaniel Mack 1613f0b5e634SDaniel Mack static struct procunit_info procunits[] = { 161465f25da4SDaniel Mack { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info }, 161565f25da4SDaniel Mack { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info }, 161665f25da4SDaniel Mack { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info }, 161765f25da4SDaniel Mack { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info }, 161865f25da4SDaniel Mack { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info }, 161965f25da4SDaniel Mack { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info }, 1620f0b5e634SDaniel Mack { 0 }, 1621f0b5e634SDaniel Mack }; 1622f0b5e634SDaniel Mack /* 1623f0b5e634SDaniel Mack * predefined data for extension units 1624f0b5e634SDaniel Mack */ 1625f0b5e634SDaniel Mack static struct procunit_value_info clock_rate_xu_info[] = { 1626f0b5e634SDaniel Mack { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, 1627f0b5e634SDaniel Mack { 0 } 1628f0b5e634SDaniel Mack }; 1629f0b5e634SDaniel Mack static struct procunit_value_info clock_source_xu_info[] = { 1630f0b5e634SDaniel Mack { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, 1631f0b5e634SDaniel Mack { 0 } 1632f0b5e634SDaniel Mack }; 1633f0b5e634SDaniel Mack static struct procunit_value_info spdif_format_xu_info[] = { 1634f0b5e634SDaniel Mack { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, 1635f0b5e634SDaniel Mack { 0 } 1636f0b5e634SDaniel Mack }; 1637f0b5e634SDaniel Mack static struct procunit_value_info soft_limit_xu_info[] = { 1638f0b5e634SDaniel Mack { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, 1639f0b5e634SDaniel Mack { 0 } 1640f0b5e634SDaniel Mack }; 1641f0b5e634SDaniel Mack static struct procunit_info extunits[] = { 1642f0b5e634SDaniel Mack { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, 1643f0b5e634SDaniel Mack { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, 1644f0b5e634SDaniel Mack { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, 1645f0b5e634SDaniel Mack { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, 1646f0b5e634SDaniel Mack { 0 } 1647f0b5e634SDaniel Mack }; 1648f0b5e634SDaniel Mack /* 1649f0b5e634SDaniel Mack * build a processing/extension unit 1650f0b5e634SDaniel Mack */ 165199fc8645SDaniel Mack static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw_desc, struct procunit_info *list, char *name) 1652f0b5e634SDaniel Mack { 165399fc8645SDaniel Mack struct uac_processing_unit_descriptor *desc = raw_desc; 165499fc8645SDaniel Mack int num_ins = desc->bNrInPins; 1655f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1656f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1657f0b5e634SDaniel Mack int i, err, nameid, type, len; 1658f0b5e634SDaniel Mack struct procunit_info *info; 1659f0b5e634SDaniel Mack struct procunit_value_info *valinfo; 1660f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1661f0b5e634SDaniel Mack static struct procunit_value_info default_value_info[] = { 1662f0b5e634SDaniel Mack { 0x01, "Switch", USB_MIXER_BOOLEAN }, 1663f0b5e634SDaniel Mack { 0 } 1664f0b5e634SDaniel Mack }; 1665f0b5e634SDaniel Mack static struct procunit_info default_info = { 1666f0b5e634SDaniel Mack 0, NULL, default_value_info 1667f0b5e634SDaniel Mack }; 1668f0b5e634SDaniel Mack 166923caaf19SDaniel Mack if (desc->bLength < 13 || desc->bLength < 13 + num_ins || 167023caaf19SDaniel Mack desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { 1671f0b5e634SDaniel Mack snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); 1672f0b5e634SDaniel Mack return -EINVAL; 1673f0b5e634SDaniel Mack } 1674f0b5e634SDaniel Mack 1675f0b5e634SDaniel Mack for (i = 0; i < num_ins; i++) { 167699fc8645SDaniel Mack if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) 1677f0b5e634SDaniel Mack return err; 1678f0b5e634SDaniel Mack } 1679f0b5e634SDaniel Mack 168099fc8645SDaniel Mack type = le16_to_cpu(desc->wProcessType); 1681f0b5e634SDaniel Mack for (info = list; info && info->type; info++) 1682f0b5e634SDaniel Mack if (info->type == type) 1683f0b5e634SDaniel Mack break; 1684f0b5e634SDaniel Mack if (! info || ! info->type) 1685f0b5e634SDaniel Mack info = &default_info; 1686f0b5e634SDaniel Mack 1687f0b5e634SDaniel Mack for (valinfo = info->values; valinfo->control; valinfo++) { 168823caaf19SDaniel Mack __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); 168999fc8645SDaniel Mack 169099fc8645SDaniel Mack if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1)))) 1691f0b5e634SDaniel Mack continue; 1692f0b5e634SDaniel Mack map = find_map(state, unitid, valinfo->control); 1693f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1694f0b5e634SDaniel Mack continue; 1695f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1696f0b5e634SDaniel Mack if (! cval) { 1697f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1698f0b5e634SDaniel Mack return -ENOMEM; 1699f0b5e634SDaniel Mack } 1700f0b5e634SDaniel Mack cval->mixer = state->mixer; 1701f0b5e634SDaniel Mack cval->id = unitid; 1702f0b5e634SDaniel Mack cval->control = valinfo->control; 1703f0b5e634SDaniel Mack cval->val_type = valinfo->val_type; 1704f0b5e634SDaniel Mack cval->channels = 1; 1705f0b5e634SDaniel Mack 1706f0b5e634SDaniel Mack /* get min/max values */ 170765f25da4SDaniel Mack if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) { 170823caaf19SDaniel Mack __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); 1709f0b5e634SDaniel Mack /* FIXME: hard-coded */ 1710f0b5e634SDaniel Mack cval->min = 1; 171199fc8645SDaniel Mack cval->max = control_spec[0]; 1712f0b5e634SDaniel Mack cval->res = 1; 1713f0b5e634SDaniel Mack cval->initialized = 1; 1714f0b5e634SDaniel Mack } else { 1715f0b5e634SDaniel Mack if (type == USB_XU_CLOCK_RATE) { 17161cdfa9f3SJoseph Teichman /* E-Mu USB 0404/0202/TrackerPre/0204 1717f0b5e634SDaniel Mack * samplerate control quirk 1718f0b5e634SDaniel Mack */ 1719f0b5e634SDaniel Mack cval->min = 0; 1720f0b5e634SDaniel Mack cval->max = 5; 1721f0b5e634SDaniel Mack cval->res = 1; 1722f0b5e634SDaniel Mack cval->initialized = 1; 1723f0b5e634SDaniel Mack } else 1724f0b5e634SDaniel Mack get_min_max(cval, valinfo->min_value); 1725f0b5e634SDaniel Mack } 1726f0b5e634SDaniel Mack 1727f0b5e634SDaniel Mack kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); 1728f0b5e634SDaniel Mack if (! kctl) { 1729f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1730f0b5e634SDaniel Mack kfree(cval); 1731f0b5e634SDaniel Mack return -ENOMEM; 1732f0b5e634SDaniel Mack } 1733f0b5e634SDaniel Mack kctl->private_free = usb_mixer_elem_free; 1734f0b5e634SDaniel Mack 1735f0b5e634SDaniel Mack if (check_mapped_name(map, kctl->id.name, 1736f0b5e634SDaniel Mack sizeof(kctl->id.name))) 1737f0b5e634SDaniel Mack /* nothing */ ; 1738f0b5e634SDaniel Mack else if (info->name) 1739f0b5e634SDaniel Mack strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); 1740f0b5e634SDaniel Mack else { 174123caaf19SDaniel Mack nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); 1742f0b5e634SDaniel Mack len = 0; 1743f0b5e634SDaniel Mack if (nameid) 1744f0b5e634SDaniel Mack len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 1745f0b5e634SDaniel Mack if (! len) 1746f0b5e634SDaniel Mack strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); 1747f0b5e634SDaniel Mack } 1748f0b5e634SDaniel Mack append_ctl_name(kctl, " "); 1749f0b5e634SDaniel Mack append_ctl_name(kctl, valinfo->suffix); 1750f0b5e634SDaniel Mack 1751f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", 1752f0b5e634SDaniel Mack cval->id, kctl->id.name, cval->channels, cval->min, cval->max); 1753ef9d5970SDaniel Mack if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0) 1754f0b5e634SDaniel Mack return err; 1755f0b5e634SDaniel Mack } 1756f0b5e634SDaniel Mack return 0; 1757f0b5e634SDaniel Mack } 1758f0b5e634SDaniel Mack 1759f0b5e634SDaniel Mack 176099fc8645SDaniel Mack static int parse_audio_processing_unit(struct mixer_build *state, int unitid, void *raw_desc) 1761f0b5e634SDaniel Mack { 176299fc8645SDaniel Mack return build_audio_procunit(state, unitid, raw_desc, procunits, "Processing Unit"); 1763f0b5e634SDaniel Mack } 1764f0b5e634SDaniel Mack 176599fc8645SDaniel Mack static int parse_audio_extension_unit(struct mixer_build *state, int unitid, void *raw_desc) 1766f0b5e634SDaniel Mack { 176799fc8645SDaniel Mack /* Note that we parse extension units with processing unit descriptors. 176899fc8645SDaniel Mack * That's ok as the layout is the same */ 176999fc8645SDaniel Mack return build_audio_procunit(state, unitid, raw_desc, extunits, "Extension Unit"); 1770f0b5e634SDaniel Mack } 1771f0b5e634SDaniel Mack 1772f0b5e634SDaniel Mack 1773f0b5e634SDaniel Mack /* 1774f0b5e634SDaniel Mack * Selector Unit 1775f0b5e634SDaniel Mack */ 1776f0b5e634SDaniel Mack 1777f0b5e634SDaniel Mack /* info callback for selector unit 1778f0b5e634SDaniel Mack * use an enumerator type for routing 1779f0b5e634SDaniel Mack */ 1780f0b5e634SDaniel Mack static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 1781f0b5e634SDaniel Mack { 1782f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 17832a1803a7SClemens Ladisch const char **itemlist = (const char **)kcontrol->private_value; 1784f0b5e634SDaniel Mack 1785f0b5e634SDaniel Mack if (snd_BUG_ON(!itemlist)) 1786f0b5e634SDaniel Mack return -EINVAL; 17872a1803a7SClemens Ladisch return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist); 1788f0b5e634SDaniel Mack } 1789f0b5e634SDaniel Mack 1790f0b5e634SDaniel Mack /* get callback for selector unit */ 1791f0b5e634SDaniel Mack static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1792f0b5e634SDaniel Mack { 1793f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1794f0b5e634SDaniel Mack int val, err; 1795f0b5e634SDaniel Mack 179609414207SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &val); 1797f0b5e634SDaniel Mack if (err < 0) { 1798f0b5e634SDaniel Mack if (cval->mixer->ignore_ctl_error) { 1799f0b5e634SDaniel Mack ucontrol->value.enumerated.item[0] = 0; 1800f0b5e634SDaniel Mack return 0; 1801f0b5e634SDaniel Mack } 1802f0b5e634SDaniel Mack return err; 1803f0b5e634SDaniel Mack } 1804f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1805f0b5e634SDaniel Mack ucontrol->value.enumerated.item[0] = val; 1806f0b5e634SDaniel Mack return 0; 1807f0b5e634SDaniel Mack } 1808f0b5e634SDaniel Mack 1809f0b5e634SDaniel Mack /* put callback for selector unit */ 1810f0b5e634SDaniel Mack static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1811f0b5e634SDaniel Mack { 1812f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1813f0b5e634SDaniel Mack int val, oval, err; 1814f0b5e634SDaniel Mack 181509414207SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &oval); 1816f0b5e634SDaniel Mack if (err < 0) { 1817f0b5e634SDaniel Mack if (cval->mixer->ignore_ctl_error) 1818f0b5e634SDaniel Mack return 0; 1819f0b5e634SDaniel Mack return err; 1820f0b5e634SDaniel Mack } 1821f0b5e634SDaniel Mack val = ucontrol->value.enumerated.item[0]; 1822f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1823f0b5e634SDaniel Mack if (val != oval) { 182409414207SDaniel Mack set_cur_ctl_value(cval, cval->control << 8, val); 1825f0b5e634SDaniel Mack return 1; 1826f0b5e634SDaniel Mack } 1827f0b5e634SDaniel Mack return 0; 1828f0b5e634SDaniel Mack } 1829f0b5e634SDaniel Mack 1830f0b5e634SDaniel Mack /* alsa control interface for selector unit */ 1831f0b5e634SDaniel Mack static struct snd_kcontrol_new mixer_selectunit_ctl = { 1832f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1833f0b5e634SDaniel Mack .name = "", /* will be filled later */ 1834f0b5e634SDaniel Mack .info = mixer_ctl_selector_info, 1835f0b5e634SDaniel Mack .get = mixer_ctl_selector_get, 1836f0b5e634SDaniel Mack .put = mixer_ctl_selector_put, 1837f0b5e634SDaniel Mack }; 1838f0b5e634SDaniel Mack 1839f0b5e634SDaniel Mack 1840f0b5e634SDaniel Mack /* private free callback. 1841f0b5e634SDaniel Mack * free both private_data and private_value 1842f0b5e634SDaniel Mack */ 1843f0b5e634SDaniel Mack static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) 1844f0b5e634SDaniel Mack { 1845f0b5e634SDaniel Mack int i, num_ins = 0; 1846f0b5e634SDaniel Mack 1847f0b5e634SDaniel Mack if (kctl->private_data) { 1848f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kctl->private_data; 1849f0b5e634SDaniel Mack num_ins = cval->max; 1850f0b5e634SDaniel Mack kfree(cval); 1851f0b5e634SDaniel Mack kctl->private_data = NULL; 1852f0b5e634SDaniel Mack } 1853f0b5e634SDaniel Mack if (kctl->private_value) { 1854f0b5e634SDaniel Mack char **itemlist = (char **)kctl->private_value; 1855f0b5e634SDaniel Mack for (i = 0; i < num_ins; i++) 1856f0b5e634SDaniel Mack kfree(itemlist[i]); 1857f0b5e634SDaniel Mack kfree(itemlist); 1858f0b5e634SDaniel Mack kctl->private_value = 0; 1859f0b5e634SDaniel Mack } 1860f0b5e634SDaniel Mack } 1861f0b5e634SDaniel Mack 1862f0b5e634SDaniel Mack /* 1863f0b5e634SDaniel Mack * parse a selector unit 1864f0b5e634SDaniel Mack */ 186599fc8645SDaniel Mack static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void *raw_desc) 1866f0b5e634SDaniel Mack { 186799fc8645SDaniel Mack struct uac_selector_unit_descriptor *desc = raw_desc; 1868f0b5e634SDaniel Mack unsigned int i, nameid, len; 1869f0b5e634SDaniel Mack int err; 1870f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1871f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1872f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1873f0b5e634SDaniel Mack char **namelist; 1874f0b5e634SDaniel Mack 187599fc8645SDaniel Mack if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) { 1876f0b5e634SDaniel Mack snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); 1877f0b5e634SDaniel Mack return -EINVAL; 1878f0b5e634SDaniel Mack } 1879f0b5e634SDaniel Mack 188099fc8645SDaniel Mack for (i = 0; i < desc->bNrInPins; i++) { 188199fc8645SDaniel Mack if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) 1882f0b5e634SDaniel Mack return err; 1883f0b5e634SDaniel Mack } 1884f0b5e634SDaniel Mack 188599fc8645SDaniel Mack if (desc->bNrInPins == 1) /* only one ? nonsense! */ 1886f0b5e634SDaniel Mack return 0; 1887f0b5e634SDaniel Mack 1888f0b5e634SDaniel Mack map = find_map(state, unitid, 0); 1889f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1890f0b5e634SDaniel Mack return 0; 1891f0b5e634SDaniel Mack 1892f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1893f0b5e634SDaniel Mack if (! cval) { 1894f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1895f0b5e634SDaniel Mack return -ENOMEM; 1896f0b5e634SDaniel Mack } 1897f0b5e634SDaniel Mack cval->mixer = state->mixer; 1898f0b5e634SDaniel Mack cval->id = unitid; 1899f0b5e634SDaniel Mack cval->val_type = USB_MIXER_U8; 1900f0b5e634SDaniel Mack cval->channels = 1; 1901f0b5e634SDaniel Mack cval->min = 1; 190299fc8645SDaniel Mack cval->max = desc->bNrInPins; 1903f0b5e634SDaniel Mack cval->res = 1; 1904f0b5e634SDaniel Mack cval->initialized = 1; 1905f0b5e634SDaniel Mack 190609414207SDaniel Mack if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) 190709414207SDaniel Mack cval->control = UAC2_CX_CLOCK_SELECTOR; 190809414207SDaniel Mack else 190909414207SDaniel Mack cval->control = 0; 191009414207SDaniel Mack 191199fc8645SDaniel Mack namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); 1912f0b5e634SDaniel Mack if (! namelist) { 1913f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc\n"); 1914f0b5e634SDaniel Mack kfree(cval); 1915f0b5e634SDaniel Mack return -ENOMEM; 1916f0b5e634SDaniel Mack } 1917f0b5e634SDaniel Mack #define MAX_ITEM_NAME_LEN 64 191899fc8645SDaniel Mack for (i = 0; i < desc->bNrInPins; i++) { 1919f0b5e634SDaniel Mack struct usb_audio_term iterm; 1920f0b5e634SDaniel Mack len = 0; 1921f0b5e634SDaniel Mack namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); 1922f0b5e634SDaniel Mack if (! namelist[i]) { 1923f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc\n"); 1924f0b5e634SDaniel Mack while (i--) 1925f0b5e634SDaniel Mack kfree(namelist[i]); 1926f0b5e634SDaniel Mack kfree(namelist); 1927f0b5e634SDaniel Mack kfree(cval); 1928f0b5e634SDaniel Mack return -ENOMEM; 1929f0b5e634SDaniel Mack } 1930f0b5e634SDaniel Mack len = check_mapped_selector_name(state, unitid, i, namelist[i], 1931f0b5e634SDaniel Mack MAX_ITEM_NAME_LEN); 193299fc8645SDaniel Mack if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) 1933f0b5e634SDaniel Mack len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); 1934f0b5e634SDaniel Mack if (! len) 1935f0b5e634SDaniel Mack sprintf(namelist[i], "Input %d", i); 1936f0b5e634SDaniel Mack } 1937f0b5e634SDaniel Mack 1938f0b5e634SDaniel Mack kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); 1939f0b5e634SDaniel Mack if (! kctl) { 1940f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1941f0b5e634SDaniel Mack kfree(namelist); 1942f0b5e634SDaniel Mack kfree(cval); 1943f0b5e634SDaniel Mack return -ENOMEM; 1944f0b5e634SDaniel Mack } 1945f0b5e634SDaniel Mack kctl->private_value = (unsigned long)namelist; 1946f0b5e634SDaniel Mack kctl->private_free = usb_mixer_selector_elem_free; 1947f0b5e634SDaniel Mack 194899fc8645SDaniel Mack nameid = uac_selector_unit_iSelector(desc); 1949f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1950f0b5e634SDaniel Mack if (len) 1951f0b5e634SDaniel Mack ; 1952f0b5e634SDaniel Mack else if (nameid) 1953f0b5e634SDaniel Mack snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 1954f0b5e634SDaniel Mack else { 1955f0b5e634SDaniel Mack len = get_term_name(state, &state->oterm, 1956f0b5e634SDaniel Mack kctl->id.name, sizeof(kctl->id.name), 0); 1957f0b5e634SDaniel Mack if (! len) 1958f0b5e634SDaniel Mack strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); 1959f0b5e634SDaniel Mack 196009414207SDaniel Mack if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) 196109414207SDaniel Mack append_ctl_name(kctl, " Clock Source"); 196209414207SDaniel Mack else if ((state->oterm.type & 0xff00) == 0x0100) 1963f0b5e634SDaniel Mack append_ctl_name(kctl, " Capture Source"); 1964f0b5e634SDaniel Mack else 1965f0b5e634SDaniel Mack append_ctl_name(kctl, " Playback Source"); 1966f0b5e634SDaniel Mack } 1967f0b5e634SDaniel Mack 1968f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", 196999fc8645SDaniel Mack cval->id, kctl->id.name, desc->bNrInPins); 1970ef9d5970SDaniel Mack if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0) 1971f0b5e634SDaniel Mack return err; 1972f0b5e634SDaniel Mack 1973f0b5e634SDaniel Mack return 0; 1974f0b5e634SDaniel Mack } 1975f0b5e634SDaniel Mack 1976f0b5e634SDaniel Mack 1977f0b5e634SDaniel Mack /* 1978f0b5e634SDaniel Mack * parse an audio unit recursively 1979f0b5e634SDaniel Mack */ 1980f0b5e634SDaniel Mack 1981f0b5e634SDaniel Mack static int parse_audio_unit(struct mixer_build *state, int unitid) 1982f0b5e634SDaniel Mack { 1983f0b5e634SDaniel Mack unsigned char *p1; 1984f0b5e634SDaniel Mack 1985f0b5e634SDaniel Mack if (test_and_set_bit(unitid, state->unitbitmap)) 1986f0b5e634SDaniel Mack return 0; /* the unit already visited */ 1987f0b5e634SDaniel Mack 1988f0b5e634SDaniel Mack p1 = find_audio_control_unit(state, unitid); 1989f0b5e634SDaniel Mack if (!p1) { 1990f0b5e634SDaniel Mack snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); 1991f0b5e634SDaniel Mack return -EINVAL; 1992f0b5e634SDaniel Mack } 1993f0b5e634SDaniel Mack 1994f0b5e634SDaniel Mack switch (p1[2]) { 1995f0b5e634SDaniel Mack case UAC_INPUT_TERMINAL: 199609414207SDaniel Mack case UAC2_CLOCK_SOURCE: 1997f0b5e634SDaniel Mack return 0; /* NOP */ 1998f0b5e634SDaniel Mack case UAC_MIXER_UNIT: 1999f0b5e634SDaniel Mack return parse_audio_mixer_unit(state, unitid, p1); 2000f0b5e634SDaniel Mack case UAC_SELECTOR_UNIT: 200109414207SDaniel Mack case UAC2_CLOCK_SELECTOR: 2002f0b5e634SDaniel Mack return parse_audio_selector_unit(state, unitid, p1); 2003f0b5e634SDaniel Mack case UAC_FEATURE_UNIT: 2004f0b5e634SDaniel Mack return parse_audio_feature_unit(state, unitid, p1); 200569da9bcbSDaniel Mack case UAC1_PROCESSING_UNIT: 200623caaf19SDaniel Mack /* UAC2_EFFECT_UNIT has the same value */ 200723caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) 2008f0b5e634SDaniel Mack return parse_audio_processing_unit(state, unitid, p1); 200923caaf19SDaniel Mack else 201023caaf19SDaniel Mack return 0; /* FIXME - effect units not implemented yet */ 201169da9bcbSDaniel Mack case UAC1_EXTENSION_UNIT: 201223caaf19SDaniel Mack /* UAC2_PROCESSING_UNIT_V2 has the same value */ 201323caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) 2014f0b5e634SDaniel Mack return parse_audio_extension_unit(state, unitid, p1); 201523caaf19SDaniel Mack else /* UAC_VERSION_2 */ 201623caaf19SDaniel Mack return parse_audio_processing_unit(state, unitid, p1); 2017f0b5e634SDaniel Mack default: 2018f0b5e634SDaniel Mack snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); 2019f0b5e634SDaniel Mack return -EINVAL; 2020f0b5e634SDaniel Mack } 2021f0b5e634SDaniel Mack } 2022f0b5e634SDaniel Mack 2023f0b5e634SDaniel Mack static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) 2024f0b5e634SDaniel Mack { 2025f0b5e634SDaniel Mack kfree(mixer->id_elems); 2026f0b5e634SDaniel Mack if (mixer->urb) { 2027f0b5e634SDaniel Mack kfree(mixer->urb->transfer_buffer); 2028f0b5e634SDaniel Mack usb_free_urb(mixer->urb); 2029f0b5e634SDaniel Mack } 2030f0b5e634SDaniel Mack usb_free_urb(mixer->rc_urb); 2031f0b5e634SDaniel Mack kfree(mixer->rc_setup_packet); 2032f0b5e634SDaniel Mack kfree(mixer); 2033f0b5e634SDaniel Mack } 2034f0b5e634SDaniel Mack 2035f0b5e634SDaniel Mack static int snd_usb_mixer_dev_free(struct snd_device *device) 2036f0b5e634SDaniel Mack { 2037f0b5e634SDaniel Mack struct usb_mixer_interface *mixer = device->device_data; 2038f0b5e634SDaniel Mack snd_usb_mixer_free(mixer); 2039f0b5e634SDaniel Mack return 0; 2040f0b5e634SDaniel Mack } 2041f0b5e634SDaniel Mack 2042f0b5e634SDaniel Mack /* 2043f0b5e634SDaniel Mack * create mixer controls 2044f0b5e634SDaniel Mack * 2045f0b5e634SDaniel Mack * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers 2046f0b5e634SDaniel Mack */ 2047f0b5e634SDaniel Mack static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) 2048f0b5e634SDaniel Mack { 2049f0b5e634SDaniel Mack struct mixer_build state; 2050f0b5e634SDaniel Mack int err; 2051f0b5e634SDaniel Mack const struct usbmix_ctl_map *map; 205223caaf19SDaniel Mack void *p; 2053f0b5e634SDaniel Mack 2054f0b5e634SDaniel Mack memset(&state, 0, sizeof(state)); 2055f0b5e634SDaniel Mack state.chip = mixer->chip; 2056f0b5e634SDaniel Mack state.mixer = mixer; 20571faa5d07SDaniel Mack state.buffer = mixer->hostif->extra; 20581faa5d07SDaniel Mack state.buflen = mixer->hostif->extralen; 2059f0b5e634SDaniel Mack 2060f0b5e634SDaniel Mack /* check the mapping table */ 2061f0b5e634SDaniel Mack for (map = usbmix_ctl_maps; map->id; map++) { 2062f0b5e634SDaniel Mack if (map->id == state.chip->usb_id) { 2063f0b5e634SDaniel Mack state.map = map->map; 2064f0b5e634SDaniel Mack state.selector_map = map->selector_map; 2065f0b5e634SDaniel Mack mixer->ignore_ctl_error = map->ignore_ctl_error; 2066f0b5e634SDaniel Mack break; 2067f0b5e634SDaniel Mack } 2068f0b5e634SDaniel Mack } 2069f0b5e634SDaniel Mack 207023caaf19SDaniel Mack p = NULL; 20711faa5d07SDaniel Mack while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, mixer->hostif->extralen, 20721faa5d07SDaniel Mack p, UAC_OUTPUT_TERMINAL)) != NULL) { 207323caaf19SDaniel Mack if (mixer->protocol == UAC_VERSION_1) { 207469da9bcbSDaniel Mack struct uac1_output_terminal_descriptor *desc = p; 207523caaf19SDaniel Mack 207623caaf19SDaniel Mack if (desc->bLength < sizeof(*desc)) 207723caaf19SDaniel Mack continue; /* invalid descriptor? */ 207823caaf19SDaniel Mack set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ 207923caaf19SDaniel Mack state.oterm.id = desc->bTerminalID; 208023caaf19SDaniel Mack state.oterm.type = le16_to_cpu(desc->wTerminalType); 208123caaf19SDaniel Mack state.oterm.name = desc->iTerminal; 208223caaf19SDaniel Mack err = parse_audio_unit(&state, desc->bSourceID); 208323caaf19SDaniel Mack if (err < 0) 208423caaf19SDaniel Mack return err; 208523caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 208623caaf19SDaniel Mack struct uac2_output_terminal_descriptor *desc = p; 208723caaf19SDaniel Mack 208823caaf19SDaniel Mack if (desc->bLength < sizeof(*desc)) 2089f0b5e634SDaniel Mack continue; /* invalid descriptor? */ 2090f0b5e634SDaniel Mack set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ 2091f0b5e634SDaniel Mack state.oterm.id = desc->bTerminalID; 2092f0b5e634SDaniel Mack state.oterm.type = le16_to_cpu(desc->wTerminalType); 2093f0b5e634SDaniel Mack state.oterm.name = desc->iTerminal; 2094f0b5e634SDaniel Mack err = parse_audio_unit(&state, desc->bSourceID); 2095f0b5e634SDaniel Mack if (err < 0) 2096f0b5e634SDaniel Mack return err; 209709414207SDaniel Mack 209809414207SDaniel Mack /* for UAC2, use the same approach to also add the clock selectors */ 209909414207SDaniel Mack err = parse_audio_unit(&state, desc->bCSourceID); 210009414207SDaniel Mack if (err < 0) 210109414207SDaniel Mack return err; 2102f0b5e634SDaniel Mack } 210323caaf19SDaniel Mack } 210423caaf19SDaniel Mack 2105f0b5e634SDaniel Mack return 0; 2106f0b5e634SDaniel Mack } 2107f0b5e634SDaniel Mack 2108f0b5e634SDaniel Mack void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) 2109f0b5e634SDaniel Mack { 2110f0b5e634SDaniel Mack struct usb_mixer_elem_info *info; 2111f0b5e634SDaniel Mack 2112f0b5e634SDaniel Mack for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) 2113f0b5e634SDaniel Mack snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 2114f0b5e634SDaniel Mack info->elem_id); 2115f0b5e634SDaniel Mack } 2116f0b5e634SDaniel Mack 2117f0b5e634SDaniel Mack static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, 2118f0b5e634SDaniel Mack int unitid, 2119f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval) 2120f0b5e634SDaniel Mack { 2121f0b5e634SDaniel Mack static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN", 2122f0b5e634SDaniel Mack "S8", "U8", "S16", "U16"}; 2123f0b5e634SDaniel Mack snd_iprintf(buffer, " Unit: %i\n", unitid); 2124f0b5e634SDaniel Mack if (cval->elem_id) 2125f0b5e634SDaniel Mack snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n", 2126f0b5e634SDaniel Mack cval->elem_id->name, cval->elem_id->index); 2127f0b5e634SDaniel Mack snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " 2128f0b5e634SDaniel Mack "channels=%i, type=\"%s\"\n", cval->id, 2129f0b5e634SDaniel Mack cval->control, cval->cmask, cval->channels, 2130f0b5e634SDaniel Mack val_types[cval->val_type]); 2131f0b5e634SDaniel Mack snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", 2132f0b5e634SDaniel Mack cval->min, cval->max, cval->dBmin, cval->dBmax); 2133f0b5e634SDaniel Mack } 2134f0b5e634SDaniel Mack 2135f0b5e634SDaniel Mack static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, 2136f0b5e634SDaniel Mack struct snd_info_buffer *buffer) 2137f0b5e634SDaniel Mack { 2138f0b5e634SDaniel Mack struct snd_usb_audio *chip = entry->private_data; 2139f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 2140f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 2141f0b5e634SDaniel Mack int unitid; 2142f0b5e634SDaniel Mack 2143f0b5e634SDaniel Mack list_for_each_entry(mixer, &chip->mixer_list, list) { 2144f0b5e634SDaniel Mack snd_iprintf(buffer, 2145f0b5e634SDaniel Mack "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", 21463d8d4dcfSDaniel Mack chip->usb_id, snd_usb_ctrl_intf(chip), 2147f0b5e634SDaniel Mack mixer->ignore_ctl_error); 2148f0b5e634SDaniel Mack snd_iprintf(buffer, "Card: %s\n", chip->card->longname); 2149f0b5e634SDaniel Mack for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { 2150f0b5e634SDaniel Mack for (cval = mixer->id_elems[unitid]; cval; 2151f0b5e634SDaniel Mack cval = cval->next_id_elem) 2152f0b5e634SDaniel Mack snd_usb_mixer_dump_cval(buffer, unitid, cval); 2153f0b5e634SDaniel Mack } 2154f0b5e634SDaniel Mack } 2155f0b5e634SDaniel Mack } 2156f0b5e634SDaniel Mack 2157e213e9cfSDaniel Mack static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, 2158e213e9cfSDaniel Mack int attribute, int value, int index) 2159e213e9cfSDaniel Mack { 2160e213e9cfSDaniel Mack struct usb_mixer_elem_info *info; 2161e213e9cfSDaniel Mack __u8 unitid = (index >> 8) & 0xff; 2162e213e9cfSDaniel Mack __u8 control = (value >> 8) & 0xff; 2163e213e9cfSDaniel Mack __u8 channel = value & 0xff; 2164e213e9cfSDaniel Mack 2165e213e9cfSDaniel Mack if (channel >= MAX_CHANNELS) { 2166e213e9cfSDaniel Mack snd_printk(KERN_DEBUG "%s(): bogus channel number %d\n", 2167e213e9cfSDaniel Mack __func__, channel); 2168e213e9cfSDaniel Mack return; 2169e213e9cfSDaniel Mack } 2170e213e9cfSDaniel Mack 2171e213e9cfSDaniel Mack for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) { 2172e213e9cfSDaniel Mack if (info->control != control) 2173e213e9cfSDaniel Mack continue; 2174e213e9cfSDaniel Mack 2175e213e9cfSDaniel Mack switch (attribute) { 2176e213e9cfSDaniel Mack case UAC2_CS_CUR: 2177e213e9cfSDaniel Mack /* invalidate cache, so the value is read from the device */ 2178e213e9cfSDaniel Mack if (channel) 2179e213e9cfSDaniel Mack info->cached &= ~(1 << channel); 2180e213e9cfSDaniel Mack else /* master channel */ 2181e213e9cfSDaniel Mack info->cached = 0; 2182e213e9cfSDaniel Mack 2183e213e9cfSDaniel Mack snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 2184e213e9cfSDaniel Mack info->elem_id); 2185e213e9cfSDaniel Mack break; 2186e213e9cfSDaniel Mack 2187e213e9cfSDaniel Mack case UAC2_CS_RANGE: 2188e213e9cfSDaniel Mack /* TODO */ 2189e213e9cfSDaniel Mack break; 2190e213e9cfSDaniel Mack 2191e213e9cfSDaniel Mack case UAC2_CS_MEM: 2192e213e9cfSDaniel Mack /* TODO */ 2193e213e9cfSDaniel Mack break; 2194e213e9cfSDaniel Mack 2195e213e9cfSDaniel Mack default: 2196e213e9cfSDaniel Mack snd_printk(KERN_DEBUG "unknown attribute %d in interrupt\n", 2197e213e9cfSDaniel Mack attribute); 2198e213e9cfSDaniel Mack break; 2199e213e9cfSDaniel Mack } /* switch */ 2200e213e9cfSDaniel Mack } 2201e213e9cfSDaniel Mack } 2202e213e9cfSDaniel Mack 2203e213e9cfSDaniel Mack static void snd_usb_mixer_interrupt(struct urb *urb) 2204f0b5e634SDaniel Mack { 2205f0b5e634SDaniel Mack struct usb_mixer_interface *mixer = urb->context; 2206e213e9cfSDaniel Mack int len = urb->actual_length; 2207edf7de31SOliver Neukum int ustatus = urb->status; 2208f0b5e634SDaniel Mack 2209edf7de31SOliver Neukum if (ustatus != 0) 2210e213e9cfSDaniel Mack goto requeue; 2211f0b5e634SDaniel Mack 2212e213e9cfSDaniel Mack if (mixer->protocol == UAC_VERSION_1) { 2213e213e9cfSDaniel Mack struct uac1_status_word *status; 2214e213e9cfSDaniel Mack 2215e213e9cfSDaniel Mack for (status = urb->transfer_buffer; 2216e213e9cfSDaniel Mack len >= sizeof(*status); 2217e213e9cfSDaniel Mack len -= sizeof(*status), status++) { 2218f0b5e634SDaniel Mack snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", 2219e213e9cfSDaniel Mack status->bStatusType, 2220e213e9cfSDaniel Mack status->bOriginator); 2221e213e9cfSDaniel Mack 2222f0b5e634SDaniel Mack /* ignore any notifications not from the control interface */ 2223e213e9cfSDaniel Mack if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != 2224e213e9cfSDaniel Mack UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) 2225f0b5e634SDaniel Mack continue; 2226e213e9cfSDaniel Mack 2227e213e9cfSDaniel Mack if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) 2228e213e9cfSDaniel Mack snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); 2229f0b5e634SDaniel Mack else 2230e213e9cfSDaniel Mack snd_usb_mixer_notify_id(mixer, status->bOriginator); 2231e213e9cfSDaniel Mack } 2232e213e9cfSDaniel Mack } else { /* UAC_VERSION_2 */ 2233e213e9cfSDaniel Mack struct uac2_interrupt_data_msg *msg; 2234e213e9cfSDaniel Mack 2235e213e9cfSDaniel Mack for (msg = urb->transfer_buffer; 2236e213e9cfSDaniel Mack len >= sizeof(*msg); 2237e213e9cfSDaniel Mack len -= sizeof(*msg), msg++) { 2238e213e9cfSDaniel Mack /* drop vendor specific and endpoint requests */ 2239e213e9cfSDaniel Mack if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || 2240e213e9cfSDaniel Mack (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) 2241e213e9cfSDaniel Mack continue; 2242e213e9cfSDaniel Mack 2243e213e9cfSDaniel Mack snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, 2244e213e9cfSDaniel Mack le16_to_cpu(msg->wValue), 2245e213e9cfSDaniel Mack le16_to_cpu(msg->wIndex)); 2246f0b5e634SDaniel Mack } 2247f0b5e634SDaniel Mack } 2248e213e9cfSDaniel Mack 2249e213e9cfSDaniel Mack requeue: 2250edf7de31SOliver Neukum if (ustatus != -ENOENT && ustatus != -ECONNRESET && ustatus != -ESHUTDOWN) { 2251f0b5e634SDaniel Mack urb->dev = mixer->chip->dev; 2252f0b5e634SDaniel Mack usb_submit_urb(urb, GFP_ATOMIC); 2253f0b5e634SDaniel Mack } 2254f0b5e634SDaniel Mack } 2255f0b5e634SDaniel Mack 2256edf7de31SOliver Neukum /* stop any bus activity of a mixer */ 2257edf7de31SOliver Neukum void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) 2258edf7de31SOliver Neukum { 2259edf7de31SOliver Neukum usb_kill_urb(mixer->urb); 2260edf7de31SOliver Neukum usb_kill_urb(mixer->rc_urb); 2261edf7de31SOliver Neukum } 2262edf7de31SOliver Neukum 2263edf7de31SOliver Neukum int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) 2264edf7de31SOliver Neukum { 2265edf7de31SOliver Neukum int err; 2266edf7de31SOliver Neukum 2267edf7de31SOliver Neukum if (mixer->urb) { 2268edf7de31SOliver Neukum err = usb_submit_urb(mixer->urb, GFP_NOIO); 2269edf7de31SOliver Neukum if (err < 0) 2270edf7de31SOliver Neukum return err; 2271edf7de31SOliver Neukum } 2272edf7de31SOliver Neukum 2273edf7de31SOliver Neukum return 0; 2274edf7de31SOliver Neukum } 2275edf7de31SOliver Neukum 2276f0b5e634SDaniel Mack /* create the handler for the optional status interrupt endpoint */ 2277f0b5e634SDaniel Mack static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) 2278f0b5e634SDaniel Mack { 2279f0b5e634SDaniel Mack struct usb_endpoint_descriptor *ep; 2280f0b5e634SDaniel Mack void *transfer_buffer; 2281f0b5e634SDaniel Mack int buffer_length; 2282f0b5e634SDaniel Mack unsigned int epnum; 2283f0b5e634SDaniel Mack 2284f0b5e634SDaniel Mack /* we need one interrupt input endpoint */ 22851faa5d07SDaniel Mack if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) 2286f0b5e634SDaniel Mack return 0; 22871faa5d07SDaniel Mack ep = get_endpoint(mixer->hostif, 0); 2288f0b5e634SDaniel Mack if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) 2289f0b5e634SDaniel Mack return 0; 2290f0b5e634SDaniel Mack 2291f0b5e634SDaniel Mack epnum = usb_endpoint_num(ep); 2292f0b5e634SDaniel Mack buffer_length = le16_to_cpu(ep->wMaxPacketSize); 2293f0b5e634SDaniel Mack transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); 2294f0b5e634SDaniel Mack if (!transfer_buffer) 2295f0b5e634SDaniel Mack return -ENOMEM; 2296f0b5e634SDaniel Mack mixer->urb = usb_alloc_urb(0, GFP_KERNEL); 2297f0b5e634SDaniel Mack if (!mixer->urb) { 2298f0b5e634SDaniel Mack kfree(transfer_buffer); 2299f0b5e634SDaniel Mack return -ENOMEM; 2300f0b5e634SDaniel Mack } 2301f0b5e634SDaniel Mack usb_fill_int_urb(mixer->urb, mixer->chip->dev, 2302f0b5e634SDaniel Mack usb_rcvintpipe(mixer->chip->dev, epnum), 2303f0b5e634SDaniel Mack transfer_buffer, buffer_length, 2304e213e9cfSDaniel Mack snd_usb_mixer_interrupt, mixer, ep->bInterval); 2305f0b5e634SDaniel Mack usb_submit_urb(mixer->urb, GFP_KERNEL); 2306f0b5e634SDaniel Mack return 0; 2307f0b5e634SDaniel Mack } 2308f0b5e634SDaniel Mack 2309f0b5e634SDaniel Mack int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 2310f0b5e634SDaniel Mack int ignore_error) 2311f0b5e634SDaniel Mack { 2312f0b5e634SDaniel Mack static struct snd_device_ops dev_ops = { 2313f0b5e634SDaniel Mack .dev_free = snd_usb_mixer_dev_free 2314f0b5e634SDaniel Mack }; 2315f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 2316f0b5e634SDaniel Mack struct snd_info_entry *entry; 231723caaf19SDaniel Mack int err; 2318f0b5e634SDaniel Mack 2319f0b5e634SDaniel Mack strcpy(chip->card->mixername, "USB Mixer"); 2320f0b5e634SDaniel Mack 2321f0b5e634SDaniel Mack mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); 2322f0b5e634SDaniel Mack if (!mixer) 2323f0b5e634SDaniel Mack return -ENOMEM; 2324f0b5e634SDaniel Mack mixer->chip = chip; 2325f0b5e634SDaniel Mack mixer->ignore_ctl_error = ignore_error; 2326f0b5e634SDaniel Mack mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), 2327f0b5e634SDaniel Mack GFP_KERNEL); 2328f0b5e634SDaniel Mack if (!mixer->id_elems) { 2329f0b5e634SDaniel Mack kfree(mixer); 2330f0b5e634SDaniel Mack return -ENOMEM; 2331f0b5e634SDaniel Mack } 2332f0b5e634SDaniel Mack 23331faa5d07SDaniel Mack mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; 23341faa5d07SDaniel Mack switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { 2335a2acad82SClemens Ladisch case UAC_VERSION_1: 2336a2acad82SClemens Ladisch default: 2337a2acad82SClemens Ladisch mixer->protocol = UAC_VERSION_1; 2338a2acad82SClemens Ladisch break; 2339a2acad82SClemens Ladisch case UAC_VERSION_2: 2340a2acad82SClemens Ladisch mixer->protocol = UAC_VERSION_2; 2341a2acad82SClemens Ladisch break; 2342a2acad82SClemens Ladisch } 2343f0b5e634SDaniel Mack 2344f0b5e634SDaniel Mack if ((err = snd_usb_mixer_controls(mixer)) < 0 || 2345f0b5e634SDaniel Mack (err = snd_usb_mixer_status_create(mixer)) < 0) 2346f0b5e634SDaniel Mack goto _error; 2347f0b5e634SDaniel Mack 2348f0b5e634SDaniel Mack snd_usb_mixer_apply_create_quirk(mixer); 2349f0b5e634SDaniel Mack 2350f0b5e634SDaniel Mack err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); 2351f0b5e634SDaniel Mack if (err < 0) 2352f0b5e634SDaniel Mack goto _error; 2353f0b5e634SDaniel Mack 2354f0b5e634SDaniel Mack if (list_empty(&chip->mixer_list) && 2355f0b5e634SDaniel Mack !snd_card_proc_new(chip->card, "usbmixer", &entry)) 2356f0b5e634SDaniel Mack snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read); 2357f0b5e634SDaniel Mack 2358f0b5e634SDaniel Mack list_add(&mixer->list, &chip->mixer_list); 2359f0b5e634SDaniel Mack return 0; 2360f0b5e634SDaniel Mack 2361f0b5e634SDaniel Mack _error: 2362f0b5e634SDaniel Mack snd_usb_mixer_free(mixer); 2363f0b5e634SDaniel Mack return err; 2364f0b5e634SDaniel Mack } 2365f0b5e634SDaniel Mack 2366f0b5e634SDaniel Mack void snd_usb_mixer_disconnect(struct list_head *p) 2367f0b5e634SDaniel Mack { 2368f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 2369f0b5e634SDaniel Mack 2370f0b5e634SDaniel Mack mixer = list_entry(p, struct usb_mixer_interface, list); 2371f0b5e634SDaniel Mack usb_kill_urb(mixer->urb); 2372f0b5e634SDaniel Mack usb_kill_urb(mixer->rc_urb); 2373f0b5e634SDaniel Mack } 2374