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 29f0b5e634SDaniel Mack #include <linux/bitops.h> 30f0b5e634SDaniel Mack #include <linux/init.h> 31f0b5e634SDaniel Mack #include <linux/list.h> 32f0b5e634SDaniel Mack #include <linux/slab.h> 33f0b5e634SDaniel Mack #include <linux/string.h> 34f0b5e634SDaniel Mack #include <linux/usb.h> 35f0b5e634SDaniel Mack #include <linux/usb/audio.h> 3623caaf19SDaniel Mack #include <linux/usb/audio-v2.h> 37f0b5e634SDaniel Mack 38f0b5e634SDaniel Mack #include <sound/core.h> 39f0b5e634SDaniel Mack #include <sound/control.h> 40f0b5e634SDaniel Mack #include <sound/hwdep.h> 41f0b5e634SDaniel Mack #include <sound/info.h> 42f0b5e634SDaniel Mack #include <sound/tlv.h> 43f0b5e634SDaniel Mack 44f0b5e634SDaniel Mack #include "usbaudio.h" 45f0b5e634SDaniel Mack #include "mixer.h" 46f0b5e634SDaniel Mack #include "helper.h" 47f0b5e634SDaniel Mack #include "mixer_quirks.h" 48f0b5e634SDaniel Mack 49f0b5e634SDaniel Mack #define MAX_ID_ELEMS 256 50f0b5e634SDaniel Mack 51f0b5e634SDaniel Mack struct usb_audio_term { 52f0b5e634SDaniel Mack int id; 53f0b5e634SDaniel Mack int type; 54f0b5e634SDaniel Mack int channels; 55f0b5e634SDaniel Mack unsigned int chconfig; 56f0b5e634SDaniel Mack int name; 57f0b5e634SDaniel Mack }; 58f0b5e634SDaniel Mack 59f0b5e634SDaniel Mack struct usbmix_name_map; 60f0b5e634SDaniel Mack 61f0b5e634SDaniel Mack struct mixer_build { 62f0b5e634SDaniel Mack struct snd_usb_audio *chip; 63f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 64f0b5e634SDaniel Mack unsigned char *buffer; 65f0b5e634SDaniel Mack unsigned int buflen; 66f0b5e634SDaniel Mack DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); 67f0b5e634SDaniel Mack struct usb_audio_term oterm; 68f0b5e634SDaniel Mack const struct usbmix_name_map *map; 69f0b5e634SDaniel Mack const struct usbmix_selector_map *selector_map; 70f0b5e634SDaniel Mack }; 71f0b5e634SDaniel Mack 72f0b5e634SDaniel Mack enum { 73f0b5e634SDaniel Mack USB_MIXER_BOOLEAN, 74f0b5e634SDaniel Mack USB_MIXER_INV_BOOLEAN, 75f0b5e634SDaniel Mack USB_MIXER_S8, 76f0b5e634SDaniel Mack USB_MIXER_U8, 77f0b5e634SDaniel Mack USB_MIXER_S16, 78f0b5e634SDaniel Mack USB_MIXER_U16, 79f0b5e634SDaniel Mack }; 80f0b5e634SDaniel Mack 81f0b5e634SDaniel Mack enum { 82f0b5e634SDaniel Mack USB_PROC_UPDOWN = 1, 83f0b5e634SDaniel Mack USB_PROC_UPDOWN_SWITCH = 1, 84f0b5e634SDaniel Mack USB_PROC_UPDOWN_MODE_SEL = 2, 85f0b5e634SDaniel Mack 86f0b5e634SDaniel Mack USB_PROC_PROLOGIC = 2, 87f0b5e634SDaniel Mack USB_PROC_PROLOGIC_SWITCH = 1, 88f0b5e634SDaniel Mack USB_PROC_PROLOGIC_MODE_SEL = 2, 89f0b5e634SDaniel Mack 90f0b5e634SDaniel Mack USB_PROC_3DENH = 3, 91f0b5e634SDaniel Mack USB_PROC_3DENH_SWITCH = 1, 92f0b5e634SDaniel Mack USB_PROC_3DENH_SPACE = 2, 93f0b5e634SDaniel Mack 94f0b5e634SDaniel Mack USB_PROC_REVERB = 4, 95f0b5e634SDaniel Mack USB_PROC_REVERB_SWITCH = 1, 96f0b5e634SDaniel Mack USB_PROC_REVERB_LEVEL = 2, 97f0b5e634SDaniel Mack USB_PROC_REVERB_TIME = 3, 98f0b5e634SDaniel Mack USB_PROC_REVERB_DELAY = 4, 99f0b5e634SDaniel Mack 100f0b5e634SDaniel Mack USB_PROC_CHORUS = 5, 101f0b5e634SDaniel Mack USB_PROC_CHORUS_SWITCH = 1, 102f0b5e634SDaniel Mack USB_PROC_CHORUS_LEVEL = 2, 103f0b5e634SDaniel Mack USB_PROC_CHORUS_RATE = 3, 104f0b5e634SDaniel Mack USB_PROC_CHORUS_DEPTH = 4, 105f0b5e634SDaniel Mack 106f0b5e634SDaniel Mack USB_PROC_DCR = 6, 107f0b5e634SDaniel Mack USB_PROC_DCR_SWITCH = 1, 108f0b5e634SDaniel Mack USB_PROC_DCR_RATIO = 2, 109f0b5e634SDaniel Mack USB_PROC_DCR_MAX_AMP = 3, 110f0b5e634SDaniel Mack USB_PROC_DCR_THRESHOLD = 4, 111f0b5e634SDaniel Mack USB_PROC_DCR_ATTACK = 5, 112f0b5e634SDaniel Mack USB_PROC_DCR_RELEASE = 6, 113f0b5e634SDaniel Mack }; 114f0b5e634SDaniel Mack 115f0b5e634SDaniel Mack /*E-mu 0202(0404) eXtension Unit(XU) control*/ 116f0b5e634SDaniel Mack enum { 117f0b5e634SDaniel Mack USB_XU_CLOCK_RATE = 0xe301, 118f0b5e634SDaniel Mack USB_XU_CLOCK_SOURCE = 0xe302, 119f0b5e634SDaniel Mack USB_XU_DIGITAL_IO_STATUS = 0xe303, 120f0b5e634SDaniel Mack USB_XU_DEVICE_OPTIONS = 0xe304, 121f0b5e634SDaniel Mack USB_XU_DIRECT_MONITORING = 0xe305, 122f0b5e634SDaniel Mack USB_XU_METERING = 0xe306 123f0b5e634SDaniel Mack }; 124f0b5e634SDaniel Mack enum { 125f0b5e634SDaniel Mack USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ 126f0b5e634SDaniel Mack USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ 127f0b5e634SDaniel Mack USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ 128f0b5e634SDaniel Mack USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ 129f0b5e634SDaniel Mack }; 130f0b5e634SDaniel Mack 131f0b5e634SDaniel Mack /* 132f0b5e634SDaniel Mack * manual mapping of mixer names 133f0b5e634SDaniel Mack * if the mixer topology is too complicated and the parsed names are 134f0b5e634SDaniel Mack * ambiguous, add the entries in usbmixer_maps.c. 135f0b5e634SDaniel Mack */ 136f0b5e634SDaniel Mack #include "mixer_maps.c" 137f0b5e634SDaniel Mack 138f0b5e634SDaniel Mack static const struct usbmix_name_map * 139f0b5e634SDaniel Mack find_map(struct mixer_build *state, int unitid, int control) 140f0b5e634SDaniel Mack { 141f0b5e634SDaniel Mack const struct usbmix_name_map *p = state->map; 142f0b5e634SDaniel Mack 143f0b5e634SDaniel Mack if (!p) 144f0b5e634SDaniel Mack return NULL; 145f0b5e634SDaniel Mack 146f0b5e634SDaniel Mack for (p = state->map; p->id; p++) { 147f0b5e634SDaniel Mack if (p->id == unitid && 148f0b5e634SDaniel Mack (!control || !p->control || control == p->control)) 149f0b5e634SDaniel Mack return p; 150f0b5e634SDaniel Mack } 151f0b5e634SDaniel Mack return NULL; 152f0b5e634SDaniel Mack } 153f0b5e634SDaniel Mack 154f0b5e634SDaniel Mack /* get the mapped name if the unit matches */ 155f0b5e634SDaniel Mack static int 156f0b5e634SDaniel Mack check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) 157f0b5e634SDaniel Mack { 158f0b5e634SDaniel Mack if (!p || !p->name) 159f0b5e634SDaniel Mack return 0; 160f0b5e634SDaniel Mack 161f0b5e634SDaniel Mack buflen--; 162f0b5e634SDaniel Mack return strlcpy(buf, p->name, buflen); 163f0b5e634SDaniel Mack } 164f0b5e634SDaniel Mack 165f0b5e634SDaniel Mack /* check whether the control should be ignored */ 166f0b5e634SDaniel Mack static inline int 167f0b5e634SDaniel Mack check_ignored_ctl(const struct usbmix_name_map *p) 168f0b5e634SDaniel Mack { 169f0b5e634SDaniel Mack if (!p || p->name || p->dB) 170f0b5e634SDaniel Mack return 0; 171f0b5e634SDaniel Mack return 1; 172f0b5e634SDaniel Mack } 173f0b5e634SDaniel Mack 174f0b5e634SDaniel Mack /* dB mapping */ 175f0b5e634SDaniel Mack static inline void check_mapped_dB(const struct usbmix_name_map *p, 176f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval) 177f0b5e634SDaniel Mack { 178f0b5e634SDaniel Mack if (p && p->dB) { 179f0b5e634SDaniel Mack cval->dBmin = p->dB->min; 180f0b5e634SDaniel Mack cval->dBmax = p->dB->max; 181f0b5e634SDaniel Mack } 182f0b5e634SDaniel Mack } 183f0b5e634SDaniel Mack 184f0b5e634SDaniel Mack /* get the mapped selector source name */ 185f0b5e634SDaniel Mack static int check_mapped_selector_name(struct mixer_build *state, int unitid, 186f0b5e634SDaniel Mack int index, char *buf, int buflen) 187f0b5e634SDaniel Mack { 188f0b5e634SDaniel Mack const struct usbmix_selector_map *p; 189f0b5e634SDaniel Mack 190f0b5e634SDaniel Mack if (! state->selector_map) 191f0b5e634SDaniel Mack return 0; 192f0b5e634SDaniel Mack for (p = state->selector_map; p->id; p++) { 193f0b5e634SDaniel Mack if (p->id == unitid && index < p->count) 194f0b5e634SDaniel Mack return strlcpy(buf, p->names[index], buflen); 195f0b5e634SDaniel Mack } 196f0b5e634SDaniel Mack return 0; 197f0b5e634SDaniel Mack } 198f0b5e634SDaniel Mack 199f0b5e634SDaniel Mack /* 200f0b5e634SDaniel Mack * find an audio control unit with the given unit id 20123caaf19SDaniel Mack * this doesn't return any clock related units, so they need to be handled elsewhere 202f0b5e634SDaniel Mack */ 203f0b5e634SDaniel Mack static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit) 204f0b5e634SDaniel Mack { 205f0b5e634SDaniel Mack unsigned char *p; 206f0b5e634SDaniel Mack 207f0b5e634SDaniel Mack p = NULL; 208f0b5e634SDaniel Mack while ((p = snd_usb_find_desc(state->buffer, state->buflen, p, 209f0b5e634SDaniel Mack USB_DT_CS_INTERFACE)) != NULL) { 21023caaf19SDaniel Mack if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC2_EXTENSION_UNIT_V2 && p[3] == unit) 211f0b5e634SDaniel Mack return p; 212f0b5e634SDaniel Mack } 213f0b5e634SDaniel Mack return NULL; 214f0b5e634SDaniel Mack } 215f0b5e634SDaniel Mack 216f0b5e634SDaniel Mack 217f0b5e634SDaniel Mack /* 218f0b5e634SDaniel Mack * copy a string with the given id 219f0b5e634SDaniel Mack */ 220f0b5e634SDaniel Mack static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) 221f0b5e634SDaniel Mack { 222f0b5e634SDaniel Mack int len = usb_string(state->chip->dev, index, buf, maxlen - 1); 223f0b5e634SDaniel Mack buf[len] = 0; 224f0b5e634SDaniel Mack return len; 225f0b5e634SDaniel Mack } 226f0b5e634SDaniel Mack 227f0b5e634SDaniel Mack /* 228f0b5e634SDaniel Mack * convert from the byte/word on usb descriptor to the zero-based integer 229f0b5e634SDaniel Mack */ 230f0b5e634SDaniel Mack static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) 231f0b5e634SDaniel Mack { 232f0b5e634SDaniel Mack switch (cval->val_type) { 233f0b5e634SDaniel Mack case USB_MIXER_BOOLEAN: 234f0b5e634SDaniel Mack return !!val; 235f0b5e634SDaniel Mack case USB_MIXER_INV_BOOLEAN: 236f0b5e634SDaniel Mack return !val; 237f0b5e634SDaniel Mack case USB_MIXER_U8: 238f0b5e634SDaniel Mack val &= 0xff; 239f0b5e634SDaniel Mack break; 240f0b5e634SDaniel Mack case USB_MIXER_S8: 241f0b5e634SDaniel Mack val &= 0xff; 242f0b5e634SDaniel Mack if (val >= 0x80) 243f0b5e634SDaniel Mack val -= 0x100; 244f0b5e634SDaniel Mack break; 245f0b5e634SDaniel Mack case USB_MIXER_U16: 246f0b5e634SDaniel Mack val &= 0xffff; 247f0b5e634SDaniel Mack break; 248f0b5e634SDaniel Mack case USB_MIXER_S16: 249f0b5e634SDaniel Mack val &= 0xffff; 250f0b5e634SDaniel Mack if (val >= 0x8000) 251f0b5e634SDaniel Mack val -= 0x10000; 252f0b5e634SDaniel Mack break; 253f0b5e634SDaniel Mack } 254f0b5e634SDaniel Mack return val; 255f0b5e634SDaniel Mack } 256f0b5e634SDaniel Mack 257f0b5e634SDaniel Mack /* 258f0b5e634SDaniel Mack * convert from the zero-based int to the byte/word for usb descriptor 259f0b5e634SDaniel Mack */ 260f0b5e634SDaniel Mack static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) 261f0b5e634SDaniel Mack { 262f0b5e634SDaniel Mack switch (cval->val_type) { 263f0b5e634SDaniel Mack case USB_MIXER_BOOLEAN: 264f0b5e634SDaniel Mack return !!val; 265f0b5e634SDaniel Mack case USB_MIXER_INV_BOOLEAN: 266f0b5e634SDaniel Mack return !val; 267f0b5e634SDaniel Mack case USB_MIXER_S8: 268f0b5e634SDaniel Mack case USB_MIXER_U8: 269f0b5e634SDaniel Mack return val & 0xff; 270f0b5e634SDaniel Mack case USB_MIXER_S16: 271f0b5e634SDaniel Mack case USB_MIXER_U16: 272f0b5e634SDaniel Mack return val & 0xffff; 273f0b5e634SDaniel Mack } 274f0b5e634SDaniel Mack return 0; /* not reached */ 275f0b5e634SDaniel Mack } 276f0b5e634SDaniel Mack 277f0b5e634SDaniel Mack static int get_relative_value(struct usb_mixer_elem_info *cval, int val) 278f0b5e634SDaniel Mack { 279f0b5e634SDaniel Mack if (! cval->res) 280f0b5e634SDaniel Mack cval->res = 1; 281f0b5e634SDaniel Mack if (val < cval->min) 282f0b5e634SDaniel Mack return 0; 283f0b5e634SDaniel Mack else if (val >= cval->max) 284f0b5e634SDaniel Mack return (cval->max - cval->min + cval->res - 1) / cval->res; 285f0b5e634SDaniel Mack else 286f0b5e634SDaniel Mack return (val - cval->min) / cval->res; 287f0b5e634SDaniel Mack } 288f0b5e634SDaniel Mack 289f0b5e634SDaniel Mack static int get_abs_value(struct usb_mixer_elem_info *cval, int val) 290f0b5e634SDaniel Mack { 291f0b5e634SDaniel Mack if (val < 0) 292f0b5e634SDaniel Mack return cval->min; 293f0b5e634SDaniel Mack if (! cval->res) 294f0b5e634SDaniel Mack cval->res = 1; 295f0b5e634SDaniel Mack val *= cval->res; 296f0b5e634SDaniel Mack val += cval->min; 297f0b5e634SDaniel Mack if (val > cval->max) 298f0b5e634SDaniel Mack return cval->max; 299f0b5e634SDaniel Mack return val; 300f0b5e634SDaniel Mack } 301f0b5e634SDaniel Mack 302f0b5e634SDaniel Mack 303f0b5e634SDaniel Mack /* 304f0b5e634SDaniel Mack * retrieve a mixer value 305f0b5e634SDaniel Mack */ 306f0b5e634SDaniel Mack 30723caaf19SDaniel Mack static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 308f0b5e634SDaniel Mack { 309f0b5e634SDaniel Mack unsigned char buf[2]; 310f0b5e634SDaniel Mack int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 311f0b5e634SDaniel Mack int timeout = 10; 312f0b5e634SDaniel Mack 313f0b5e634SDaniel Mack while (timeout-- > 0) { 314f0b5e634SDaniel Mack if (snd_usb_ctl_msg(cval->mixer->chip->dev, 315f0b5e634SDaniel Mack usb_rcvctrlpipe(cval->mixer->chip->dev, 0), 316f0b5e634SDaniel Mack request, 317f0b5e634SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 318f0b5e634SDaniel Mack validx, cval->mixer->ctrlif | (cval->id << 8), 319f0b5e634SDaniel Mack buf, val_len, 100) >= val_len) { 320f0b5e634SDaniel Mack *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); 321f0b5e634SDaniel Mack return 0; 322f0b5e634SDaniel Mack } 323f0b5e634SDaniel Mack } 324f0b5e634SDaniel Mack snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 325f0b5e634SDaniel Mack request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type); 326f0b5e634SDaniel Mack return -EINVAL; 327f0b5e634SDaniel Mack } 328f0b5e634SDaniel Mack 32923caaf19SDaniel Mack static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 33023caaf19SDaniel Mack { 33123caaf19SDaniel Mack unsigned char buf[14]; /* enough space for one range of 4 bytes */ 33223caaf19SDaniel Mack unsigned char *val; 33323caaf19SDaniel Mack int ret; 33423caaf19SDaniel Mack __u8 bRequest; 33523caaf19SDaniel Mack 33623caaf19SDaniel Mack bRequest = (request == UAC_GET_CUR) ? 33723caaf19SDaniel Mack UAC2_CS_CUR : UAC2_CS_RANGE; 33823caaf19SDaniel Mack 33923caaf19SDaniel Mack ret = snd_usb_ctl_msg(cval->mixer->chip->dev, 34023caaf19SDaniel Mack usb_rcvctrlpipe(cval->mixer->chip->dev, 0), 34123caaf19SDaniel Mack bRequest, 34223caaf19SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, 34323caaf19SDaniel Mack validx, cval->mixer->ctrlif | (cval->id << 8), 34423caaf19SDaniel Mack buf, sizeof(buf), 1000); 34523caaf19SDaniel Mack 34623caaf19SDaniel Mack if (ret < 0) { 34723caaf19SDaniel Mack snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", 34823caaf19SDaniel Mack request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type); 34923caaf19SDaniel Mack return ret; 35023caaf19SDaniel Mack } 35123caaf19SDaniel Mack 35223caaf19SDaniel Mack switch (request) { 35323caaf19SDaniel Mack case UAC_GET_CUR: 35423caaf19SDaniel Mack val = buf; 35523caaf19SDaniel Mack break; 35623caaf19SDaniel Mack case UAC_GET_MIN: 35723caaf19SDaniel Mack val = buf + sizeof(__u16); 35823caaf19SDaniel Mack break; 35923caaf19SDaniel Mack case UAC_GET_MAX: 36023caaf19SDaniel Mack val = buf + sizeof(__u16) * 2; 36123caaf19SDaniel Mack break; 36223caaf19SDaniel Mack case UAC_GET_RES: 36323caaf19SDaniel Mack val = buf + sizeof(__u16) * 3; 36423caaf19SDaniel Mack break; 36523caaf19SDaniel Mack default: 36623caaf19SDaniel Mack return -EINVAL; 36723caaf19SDaniel Mack } 36823caaf19SDaniel Mack 36923caaf19SDaniel Mack *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16))); 37023caaf19SDaniel Mack 37123caaf19SDaniel Mack return 0; 37223caaf19SDaniel Mack } 37323caaf19SDaniel Mack 37423caaf19SDaniel Mack static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) 37523caaf19SDaniel Mack { 37623caaf19SDaniel Mack return (cval->mixer->protocol == UAC_VERSION_1) ? 37723caaf19SDaniel Mack get_ctl_value_v1(cval, request, validx, value_ret) : 37823caaf19SDaniel Mack get_ctl_value_v2(cval, request, validx, value_ret); 37923caaf19SDaniel Mack } 38023caaf19SDaniel Mack 381f0b5e634SDaniel Mack static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value) 382f0b5e634SDaniel Mack { 383f0b5e634SDaniel Mack return get_ctl_value(cval, UAC_GET_CUR, validx, value); 384f0b5e634SDaniel Mack } 385f0b5e634SDaniel Mack 386f0b5e634SDaniel Mack /* channel = 0: master, 1 = first channel */ 387f0b5e634SDaniel Mack static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, 388f0b5e634SDaniel Mack int channel, int *value) 389f0b5e634SDaniel Mack { 390f0b5e634SDaniel Mack return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value); 391f0b5e634SDaniel Mack } 392f0b5e634SDaniel Mack 393f0b5e634SDaniel Mack static int get_cur_mix_value(struct usb_mixer_elem_info *cval, 394f0b5e634SDaniel Mack int channel, int index, int *value) 395f0b5e634SDaniel Mack { 396f0b5e634SDaniel Mack int err; 397f0b5e634SDaniel Mack 398f0b5e634SDaniel Mack if (cval->cached & (1 << channel)) { 399f0b5e634SDaniel Mack *value = cval->cache_val[index]; 400f0b5e634SDaniel Mack return 0; 401f0b5e634SDaniel Mack } 402f0b5e634SDaniel Mack err = get_cur_mix_raw(cval, channel, value); 403f0b5e634SDaniel Mack if (err < 0) { 404f0b5e634SDaniel Mack if (!cval->mixer->ignore_ctl_error) 40523caaf19SDaniel Mack snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", 406f0b5e634SDaniel Mack cval->control, channel, err); 407f0b5e634SDaniel Mack return err; 408f0b5e634SDaniel Mack } 409f0b5e634SDaniel Mack cval->cached |= 1 << channel; 410f0b5e634SDaniel Mack cval->cache_val[index] = *value; 411f0b5e634SDaniel Mack return 0; 412f0b5e634SDaniel Mack } 413f0b5e634SDaniel Mack 414f0b5e634SDaniel Mack 415f0b5e634SDaniel Mack /* 416f0b5e634SDaniel Mack * set a mixer value 417f0b5e634SDaniel Mack */ 418f0b5e634SDaniel Mack 419f0b5e634SDaniel Mack int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 420f0b5e634SDaniel Mack int request, int validx, int value_set) 421f0b5e634SDaniel Mack { 422f0b5e634SDaniel Mack unsigned char buf[2]; 42323caaf19SDaniel Mack int val_len, timeout = 10; 42423caaf19SDaniel Mack 42523caaf19SDaniel Mack if (cval->mixer->protocol == UAC_VERSION_1) { 42623caaf19SDaniel Mack val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; 42723caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 42823caaf19SDaniel Mack /* audio class v2 controls are always 2 bytes in size */ 42923caaf19SDaniel Mack val_len = sizeof(__u16); 43023caaf19SDaniel Mack 43123caaf19SDaniel Mack /* FIXME */ 43223caaf19SDaniel Mack if (request != UAC_SET_CUR) { 43323caaf19SDaniel Mack snd_printdd(KERN_WARNING "RANGE setting not yet supported\n"); 43423caaf19SDaniel Mack return -EINVAL; 43523caaf19SDaniel Mack } 43623caaf19SDaniel Mack 43723caaf19SDaniel Mack request = UAC2_CS_CUR; 43823caaf19SDaniel Mack } 439f0b5e634SDaniel Mack 440f0b5e634SDaniel Mack value_set = convert_bytes_value(cval, value_set); 441f0b5e634SDaniel Mack buf[0] = value_set & 0xff; 442f0b5e634SDaniel Mack buf[1] = (value_set >> 8) & 0xff; 443f0b5e634SDaniel Mack while (timeout-- > 0) 444f0b5e634SDaniel Mack if (snd_usb_ctl_msg(cval->mixer->chip->dev, 445f0b5e634SDaniel Mack usb_sndctrlpipe(cval->mixer->chip->dev, 0), 446f0b5e634SDaniel Mack request, 447f0b5e634SDaniel Mack USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, 448f0b5e634SDaniel Mack validx, cval->mixer->ctrlif | (cval->id << 8), 449f0b5e634SDaniel Mack buf, val_len, 100) >= 0) 450f0b5e634SDaniel Mack return 0; 451f0b5e634SDaniel Mack snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", 452f0b5e634SDaniel Mack request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]); 453f0b5e634SDaniel Mack return -EINVAL; 454f0b5e634SDaniel Mack } 455f0b5e634SDaniel Mack 456f0b5e634SDaniel Mack static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value) 457f0b5e634SDaniel Mack { 458f0b5e634SDaniel Mack return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value); 459f0b5e634SDaniel Mack } 460f0b5e634SDaniel Mack 461f0b5e634SDaniel Mack static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, 462f0b5e634SDaniel Mack int index, int value) 463f0b5e634SDaniel Mack { 464f0b5e634SDaniel Mack int err; 465f0b5e634SDaniel Mack err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel, 466f0b5e634SDaniel Mack value); 467f0b5e634SDaniel Mack if (err < 0) 468f0b5e634SDaniel Mack return err; 469f0b5e634SDaniel Mack cval->cached |= 1 << channel; 470f0b5e634SDaniel Mack cval->cache_val[index] = value; 471f0b5e634SDaniel Mack return 0; 472f0b5e634SDaniel Mack } 473f0b5e634SDaniel Mack 474f0b5e634SDaniel Mack /* 475f0b5e634SDaniel Mack * TLV callback for mixer volume controls 476f0b5e634SDaniel Mack */ 477f0b5e634SDaniel Mack static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, 478f0b5e634SDaniel Mack unsigned int size, unsigned int __user *_tlv) 479f0b5e634SDaniel Mack { 480f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 481f0b5e634SDaniel Mack DECLARE_TLV_DB_MINMAX(scale, 0, 0); 482f0b5e634SDaniel Mack 483f0b5e634SDaniel Mack if (size < sizeof(scale)) 484f0b5e634SDaniel Mack return -ENOMEM; 485f0b5e634SDaniel Mack scale[2] = cval->dBmin; 486f0b5e634SDaniel Mack scale[3] = cval->dBmax; 487f0b5e634SDaniel Mack if (copy_to_user(_tlv, scale, sizeof(scale))) 488f0b5e634SDaniel Mack return -EFAULT; 489f0b5e634SDaniel Mack return 0; 490f0b5e634SDaniel Mack } 491f0b5e634SDaniel Mack 492f0b5e634SDaniel Mack /* 493f0b5e634SDaniel Mack * parser routines begin here... 494f0b5e634SDaniel Mack */ 495f0b5e634SDaniel Mack 496f0b5e634SDaniel Mack static int parse_audio_unit(struct mixer_build *state, int unitid); 497f0b5e634SDaniel Mack 498f0b5e634SDaniel Mack 499f0b5e634SDaniel Mack /* 500f0b5e634SDaniel Mack * check if the input/output channel routing is enabled on the given bitmap. 501f0b5e634SDaniel Mack * used for mixer unit parser 502f0b5e634SDaniel Mack */ 503f0b5e634SDaniel Mack static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) 504f0b5e634SDaniel Mack { 505f0b5e634SDaniel Mack int idx = ich * num_outs + och; 506f0b5e634SDaniel Mack return bmap[idx >> 3] & (0x80 >> (idx & 7)); 507f0b5e634SDaniel Mack } 508f0b5e634SDaniel Mack 509f0b5e634SDaniel Mack 510f0b5e634SDaniel Mack /* 511f0b5e634SDaniel Mack * add an alsa control element 512f0b5e634SDaniel Mack * search and increment the index until an empty slot is found. 513f0b5e634SDaniel Mack * 514f0b5e634SDaniel Mack * if failed, give up and free the control instance. 515f0b5e634SDaniel Mack */ 516f0b5e634SDaniel Mack 517f0b5e634SDaniel Mack static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl) 518f0b5e634SDaniel Mack { 519f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kctl->private_data; 520f0b5e634SDaniel Mack int err; 521f0b5e634SDaniel Mack 522f0b5e634SDaniel Mack while (snd_ctl_find_id(state->chip->card, &kctl->id)) 523f0b5e634SDaniel Mack kctl->id.index++; 524f0b5e634SDaniel Mack if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) { 525f0b5e634SDaniel Mack snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); 526f0b5e634SDaniel Mack return err; 527f0b5e634SDaniel Mack } 528f0b5e634SDaniel Mack cval->elem_id = &kctl->id; 529f0b5e634SDaniel Mack cval->next_id_elem = state->mixer->id_elems[cval->id]; 530f0b5e634SDaniel Mack state->mixer->id_elems[cval->id] = cval; 531f0b5e634SDaniel Mack return 0; 532f0b5e634SDaniel Mack } 533f0b5e634SDaniel Mack 534f0b5e634SDaniel Mack 535f0b5e634SDaniel Mack /* 536f0b5e634SDaniel Mack * get a terminal name string 537f0b5e634SDaniel Mack */ 538f0b5e634SDaniel Mack 539f0b5e634SDaniel Mack static struct iterm_name_combo { 540f0b5e634SDaniel Mack int type; 541f0b5e634SDaniel Mack char *name; 542f0b5e634SDaniel Mack } iterm_names[] = { 543f0b5e634SDaniel Mack { 0x0300, "Output" }, 544f0b5e634SDaniel Mack { 0x0301, "Speaker" }, 545f0b5e634SDaniel Mack { 0x0302, "Headphone" }, 546f0b5e634SDaniel Mack { 0x0303, "HMD Audio" }, 547f0b5e634SDaniel Mack { 0x0304, "Desktop Speaker" }, 548f0b5e634SDaniel Mack { 0x0305, "Room Speaker" }, 549f0b5e634SDaniel Mack { 0x0306, "Com Speaker" }, 550f0b5e634SDaniel Mack { 0x0307, "LFE" }, 551f0b5e634SDaniel Mack { 0x0600, "External In" }, 552f0b5e634SDaniel Mack { 0x0601, "Analog In" }, 553f0b5e634SDaniel Mack { 0x0602, "Digital In" }, 554f0b5e634SDaniel Mack { 0x0603, "Line" }, 555f0b5e634SDaniel Mack { 0x0604, "Legacy In" }, 556f0b5e634SDaniel Mack { 0x0605, "IEC958 In" }, 557f0b5e634SDaniel Mack { 0x0606, "1394 DA Stream" }, 558f0b5e634SDaniel Mack { 0x0607, "1394 DV Stream" }, 559f0b5e634SDaniel Mack { 0x0700, "Embedded" }, 560f0b5e634SDaniel Mack { 0x0701, "Noise Source" }, 561f0b5e634SDaniel Mack { 0x0702, "Equalization Noise" }, 562f0b5e634SDaniel Mack { 0x0703, "CD" }, 563f0b5e634SDaniel Mack { 0x0704, "DAT" }, 564f0b5e634SDaniel Mack { 0x0705, "DCC" }, 565f0b5e634SDaniel Mack { 0x0706, "MiniDisk" }, 566f0b5e634SDaniel Mack { 0x0707, "Analog Tape" }, 567f0b5e634SDaniel Mack { 0x0708, "Phonograph" }, 568f0b5e634SDaniel Mack { 0x0709, "VCR Audio" }, 569f0b5e634SDaniel Mack { 0x070a, "Video Disk Audio" }, 570f0b5e634SDaniel Mack { 0x070b, "DVD Audio" }, 571f0b5e634SDaniel Mack { 0x070c, "TV Tuner Audio" }, 572f0b5e634SDaniel Mack { 0x070d, "Satellite Rec Audio" }, 573f0b5e634SDaniel Mack { 0x070e, "Cable Tuner Audio" }, 574f0b5e634SDaniel Mack { 0x070f, "DSS Audio" }, 575f0b5e634SDaniel Mack { 0x0710, "Radio Receiver" }, 576f0b5e634SDaniel Mack { 0x0711, "Radio Transmitter" }, 577f0b5e634SDaniel Mack { 0x0712, "Multi-Track Recorder" }, 578f0b5e634SDaniel Mack { 0x0713, "Synthesizer" }, 579f0b5e634SDaniel Mack { 0 }, 580f0b5e634SDaniel Mack }; 581f0b5e634SDaniel Mack 582f0b5e634SDaniel Mack static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, 583f0b5e634SDaniel Mack unsigned char *name, int maxlen, int term_only) 584f0b5e634SDaniel Mack { 585f0b5e634SDaniel Mack struct iterm_name_combo *names; 586f0b5e634SDaniel Mack 587f0b5e634SDaniel Mack if (iterm->name) 588f0b5e634SDaniel Mack return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); 589f0b5e634SDaniel Mack 590f0b5e634SDaniel Mack /* virtual type - not a real terminal */ 591f0b5e634SDaniel Mack if (iterm->type >> 16) { 592f0b5e634SDaniel Mack if (term_only) 593f0b5e634SDaniel Mack return 0; 594f0b5e634SDaniel Mack switch (iterm->type >> 16) { 595f0b5e634SDaniel Mack case UAC_SELECTOR_UNIT: 596f0b5e634SDaniel Mack strcpy(name, "Selector"); return 8; 597f0b5e634SDaniel Mack case UAC_PROCESSING_UNIT_V1: 598f0b5e634SDaniel Mack strcpy(name, "Process Unit"); return 12; 599f0b5e634SDaniel Mack case UAC_EXTENSION_UNIT_V1: 600f0b5e634SDaniel Mack strcpy(name, "Ext Unit"); return 8; 601f0b5e634SDaniel Mack case UAC_MIXER_UNIT: 602f0b5e634SDaniel Mack strcpy(name, "Mixer"); return 5; 603f0b5e634SDaniel Mack default: 604f0b5e634SDaniel Mack return sprintf(name, "Unit %d", iterm->id); 605f0b5e634SDaniel Mack } 606f0b5e634SDaniel Mack } 607f0b5e634SDaniel Mack 608f0b5e634SDaniel Mack switch (iterm->type & 0xff00) { 609f0b5e634SDaniel Mack case 0x0100: 610f0b5e634SDaniel Mack strcpy(name, "PCM"); return 3; 611f0b5e634SDaniel Mack case 0x0200: 612f0b5e634SDaniel Mack strcpy(name, "Mic"); return 3; 613f0b5e634SDaniel Mack case 0x0400: 614f0b5e634SDaniel Mack strcpy(name, "Headset"); return 7; 615f0b5e634SDaniel Mack case 0x0500: 616f0b5e634SDaniel Mack strcpy(name, "Phone"); return 5; 617f0b5e634SDaniel Mack } 618f0b5e634SDaniel Mack 619f0b5e634SDaniel Mack for (names = iterm_names; names->type; names++) 620f0b5e634SDaniel Mack if (names->type == iterm->type) { 621f0b5e634SDaniel Mack strcpy(name, names->name); 622f0b5e634SDaniel Mack return strlen(names->name); 623f0b5e634SDaniel Mack } 624f0b5e634SDaniel Mack return 0; 625f0b5e634SDaniel Mack } 626f0b5e634SDaniel Mack 627f0b5e634SDaniel Mack 628f0b5e634SDaniel Mack /* 629f0b5e634SDaniel Mack * parse the source unit recursively until it reaches to a terminal 630f0b5e634SDaniel Mack * or a branched unit. 631f0b5e634SDaniel Mack */ 632f0b5e634SDaniel Mack static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term) 633f0b5e634SDaniel Mack { 63423caaf19SDaniel Mack void *p1; 635f0b5e634SDaniel Mack 636f0b5e634SDaniel Mack memset(term, 0, sizeof(*term)); 637f0b5e634SDaniel Mack while ((p1 = find_audio_control_unit(state, id)) != NULL) { 63823caaf19SDaniel Mack unsigned char *hdr = p1; 639f0b5e634SDaniel Mack term->id = id; 64023caaf19SDaniel Mack switch (hdr[2]) { 641f0b5e634SDaniel Mack case UAC_INPUT_TERMINAL: 64223caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 64323caaf19SDaniel Mack struct uac_input_terminal_descriptor *d = p1; 64423caaf19SDaniel Mack term->type = le16_to_cpu(d->wTerminalType); 64523caaf19SDaniel Mack term->channels = d->bNrChannels; 64623caaf19SDaniel Mack term->chconfig = le16_to_cpu(d->wChannelConfig); 64723caaf19SDaniel Mack term->name = d->iTerminal; 64823caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 64923caaf19SDaniel Mack struct uac2_input_terminal_descriptor *d = p1; 65023caaf19SDaniel Mack term->type = le16_to_cpu(d->wTerminalType); 65123caaf19SDaniel Mack term->channels = d->bNrChannels; 65223caaf19SDaniel Mack term->chconfig = le32_to_cpu(d->bmChannelConfig); 65323caaf19SDaniel Mack term->name = d->iTerminal; 65423caaf19SDaniel Mack } 655f0b5e634SDaniel Mack return 0; 65623caaf19SDaniel Mack case UAC_FEATURE_UNIT: { 65723caaf19SDaniel Mack /* the header is the same for v1 and v2 */ 65823caaf19SDaniel Mack struct uac_feature_unit_descriptor *d = p1; 6595e688883SDaniel Mack id = d->bSourceID; 660f0b5e634SDaniel Mack break; /* continue to parse */ 661f0b5e634SDaniel Mack } 66223caaf19SDaniel Mack case UAC_MIXER_UNIT: { 66323caaf19SDaniel Mack struct uac_mixer_unit_descriptor *d = p1; 66423caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 66523caaf19SDaniel Mack term->channels = uac_mixer_unit_bNrChannels(d); 66623caaf19SDaniel Mack term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol); 66723caaf19SDaniel Mack term->name = uac_mixer_unit_iMixer(d); 668f0b5e634SDaniel Mack return 0; 66923caaf19SDaniel Mack } 67023caaf19SDaniel Mack case UAC_SELECTOR_UNIT: { 67123caaf19SDaniel Mack struct uac_selector_unit_descriptor *d = p1; 67223caaf19SDaniel Mack /* call recursively to retrieve the channel info */ 67323caaf19SDaniel Mack if (check_input_term(state, d->baSourceID[0], term) < 0) 67423caaf19SDaniel Mack return -ENODEV; 67523caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 67623caaf19SDaniel Mack term->id = id; 67723caaf19SDaniel Mack term->name = uac_selector_unit_iSelector(d); 67823caaf19SDaniel Mack return 0; 67923caaf19SDaniel Mack } 68023caaf19SDaniel Mack case UAC_PROCESSING_UNIT_V1: 68123caaf19SDaniel Mack case UAC_EXTENSION_UNIT_V1: { 68223caaf19SDaniel Mack struct uac_processing_unit_descriptor *d = p1; 68323caaf19SDaniel Mack if (d->bNrInPins) { 68423caaf19SDaniel Mack id = d->baSourceID[0]; 68523caaf19SDaniel Mack break; /* continue to parse */ 68623caaf19SDaniel Mack } 68723caaf19SDaniel Mack term->type = d->bDescriptorSubtype << 16; /* virtual type */ 68823caaf19SDaniel Mack term->channels = uac_processing_unit_bNrChannels(d); 68923caaf19SDaniel Mack term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol); 69023caaf19SDaniel Mack term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol); 69123caaf19SDaniel Mack return 0; 69223caaf19SDaniel Mack } 693f0b5e634SDaniel Mack default: 694f0b5e634SDaniel Mack return -ENODEV; 695f0b5e634SDaniel Mack } 696f0b5e634SDaniel Mack } 697f0b5e634SDaniel Mack return -ENODEV; 698f0b5e634SDaniel Mack } 699f0b5e634SDaniel Mack 700f0b5e634SDaniel Mack 701f0b5e634SDaniel Mack /* 702f0b5e634SDaniel Mack * Feature Unit 703f0b5e634SDaniel Mack */ 704f0b5e634SDaniel Mack 705f0b5e634SDaniel Mack /* feature unit control information */ 706f0b5e634SDaniel Mack struct usb_feature_control_info { 707f0b5e634SDaniel Mack const char *name; 708f0b5e634SDaniel Mack unsigned int type; /* control type (mute, volume, etc.) */ 709f0b5e634SDaniel Mack }; 710f0b5e634SDaniel Mack 711f0b5e634SDaniel Mack static struct usb_feature_control_info audio_feature_info[] = { 712f0b5e634SDaniel Mack { "Mute", USB_MIXER_INV_BOOLEAN }, 713f0b5e634SDaniel Mack { "Volume", USB_MIXER_S16 }, 714f0b5e634SDaniel Mack { "Tone Control - Bass", USB_MIXER_S8 }, 715f0b5e634SDaniel Mack { "Tone Control - Mid", USB_MIXER_S8 }, 716f0b5e634SDaniel Mack { "Tone Control - Treble", USB_MIXER_S8 }, 717f0b5e634SDaniel Mack { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */ 718f0b5e634SDaniel Mack { "Auto Gain Control", USB_MIXER_BOOLEAN }, 719f0b5e634SDaniel Mack { "Delay Control", USB_MIXER_U16 }, 720f0b5e634SDaniel Mack { "Bass Boost", USB_MIXER_BOOLEAN }, 721f0b5e634SDaniel Mack { "Loudness", USB_MIXER_BOOLEAN }, 722f0b5e634SDaniel Mack }; 723f0b5e634SDaniel Mack 724f0b5e634SDaniel Mack 725f0b5e634SDaniel Mack /* private_free callback */ 726f0b5e634SDaniel Mack static void usb_mixer_elem_free(struct snd_kcontrol *kctl) 727f0b5e634SDaniel Mack { 728f0b5e634SDaniel Mack kfree(kctl->private_data); 729f0b5e634SDaniel Mack kctl->private_data = NULL; 730f0b5e634SDaniel Mack } 731f0b5e634SDaniel Mack 732f0b5e634SDaniel Mack 733f0b5e634SDaniel Mack /* 734f0b5e634SDaniel Mack * interface to ALSA control for feature/mixer units 735f0b5e634SDaniel Mack */ 736f0b5e634SDaniel Mack 737f0b5e634SDaniel Mack /* 738f0b5e634SDaniel Mack * retrieve the minimum and maximum values for the specified control 739f0b5e634SDaniel Mack */ 740f0b5e634SDaniel Mack static int get_min_max(struct usb_mixer_elem_info *cval, int default_min) 741f0b5e634SDaniel Mack { 742f0b5e634SDaniel Mack /* for failsafe */ 743f0b5e634SDaniel Mack cval->min = default_min; 744f0b5e634SDaniel Mack cval->max = cval->min + 1; 745f0b5e634SDaniel Mack cval->res = 1; 746f0b5e634SDaniel Mack cval->dBmin = cval->dBmax = 0; 747f0b5e634SDaniel Mack 748f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 749f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) { 750f0b5e634SDaniel Mack cval->initialized = 1; 751f0b5e634SDaniel Mack } else { 752f0b5e634SDaniel Mack int minchn = 0; 753f0b5e634SDaniel Mack if (cval->cmask) { 754f0b5e634SDaniel Mack int i; 755f0b5e634SDaniel Mack for (i = 0; i < MAX_CHANNELS; i++) 756f0b5e634SDaniel Mack if (cval->cmask & (1 << i)) { 757f0b5e634SDaniel Mack minchn = i + 1; 758f0b5e634SDaniel Mack break; 759f0b5e634SDaniel Mack } 760f0b5e634SDaniel Mack } 761f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || 762f0b5e634SDaniel Mack get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { 763f0b5e634SDaniel Mack snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", 764f0b5e634SDaniel Mack cval->id, cval->mixer->ctrlif, cval->control, cval->id); 765f0b5e634SDaniel Mack return -EINVAL; 766f0b5e634SDaniel Mack } 767f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { 768f0b5e634SDaniel Mack cval->res = 1; 769f0b5e634SDaniel Mack } else { 770f0b5e634SDaniel Mack int last_valid_res = cval->res; 771f0b5e634SDaniel Mack 772f0b5e634SDaniel Mack while (cval->res > 1) { 773f0b5e634SDaniel Mack if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, 774f0b5e634SDaniel Mack (cval->control << 8) | minchn, cval->res / 2) < 0) 775f0b5e634SDaniel Mack break; 776f0b5e634SDaniel Mack cval->res /= 2; 777f0b5e634SDaniel Mack } 778f0b5e634SDaniel Mack if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) 779f0b5e634SDaniel Mack cval->res = last_valid_res; 780f0b5e634SDaniel Mack } 781f0b5e634SDaniel Mack if (cval->res == 0) 782f0b5e634SDaniel Mack cval->res = 1; 783f0b5e634SDaniel Mack 784f0b5e634SDaniel Mack /* Additional checks for the proper resolution 785f0b5e634SDaniel Mack * 786f0b5e634SDaniel Mack * Some devices report smaller resolutions than actually 787f0b5e634SDaniel Mack * reacting. They don't return errors but simply clip 788f0b5e634SDaniel Mack * to the lower aligned value. 789f0b5e634SDaniel Mack */ 790f0b5e634SDaniel Mack if (cval->min + cval->res < cval->max) { 791f0b5e634SDaniel Mack int last_valid_res = cval->res; 792f0b5e634SDaniel Mack int saved, test, check; 793f0b5e634SDaniel Mack get_cur_mix_raw(cval, minchn, &saved); 794f0b5e634SDaniel Mack for (;;) { 795f0b5e634SDaniel Mack test = saved; 796f0b5e634SDaniel Mack if (test < cval->max) 797f0b5e634SDaniel Mack test += cval->res; 798f0b5e634SDaniel Mack else 799f0b5e634SDaniel Mack test -= cval->res; 800f0b5e634SDaniel Mack if (test < cval->min || test > cval->max || 801f0b5e634SDaniel Mack set_cur_mix_value(cval, minchn, 0, test) || 802f0b5e634SDaniel Mack get_cur_mix_raw(cval, minchn, &check)) { 803f0b5e634SDaniel Mack cval->res = last_valid_res; 804f0b5e634SDaniel Mack break; 805f0b5e634SDaniel Mack } 806f0b5e634SDaniel Mack if (test == check) 807f0b5e634SDaniel Mack break; 808f0b5e634SDaniel Mack cval->res *= 2; 809f0b5e634SDaniel Mack } 810f0b5e634SDaniel Mack set_cur_mix_value(cval, minchn, 0, saved); 811f0b5e634SDaniel Mack } 812f0b5e634SDaniel Mack 813f0b5e634SDaniel Mack cval->initialized = 1; 814f0b5e634SDaniel Mack } 815f0b5e634SDaniel Mack 816f0b5e634SDaniel Mack /* USB descriptions contain the dB scale in 1/256 dB unit 817f0b5e634SDaniel Mack * while ALSA TLV contains in 1/100 dB unit 818f0b5e634SDaniel Mack */ 819f0b5e634SDaniel Mack cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; 820f0b5e634SDaniel Mack cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; 821f0b5e634SDaniel Mack if (cval->dBmin > cval->dBmax) { 822f0b5e634SDaniel Mack /* something is wrong; assume it's either from/to 0dB */ 823f0b5e634SDaniel Mack if (cval->dBmin < 0) 824f0b5e634SDaniel Mack cval->dBmax = 0; 825f0b5e634SDaniel Mack else if (cval->dBmin > 0) 826f0b5e634SDaniel Mack cval->dBmin = 0; 827f0b5e634SDaniel Mack if (cval->dBmin > cval->dBmax) { 828f0b5e634SDaniel Mack /* totally crap, return an error */ 829f0b5e634SDaniel Mack return -EINVAL; 830f0b5e634SDaniel Mack } 831f0b5e634SDaniel Mack } 832f0b5e634SDaniel Mack 833f0b5e634SDaniel Mack return 0; 834f0b5e634SDaniel Mack } 835f0b5e634SDaniel Mack 836f0b5e634SDaniel Mack 837f0b5e634SDaniel Mack /* get a feature/mixer unit info */ 838f0b5e634SDaniel Mack static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 839f0b5e634SDaniel Mack { 840f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 841f0b5e634SDaniel Mack 842f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 843f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) 844f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 845f0b5e634SDaniel Mack else 846f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 847f0b5e634SDaniel Mack uinfo->count = cval->channels; 848f0b5e634SDaniel Mack if (cval->val_type == USB_MIXER_BOOLEAN || 849f0b5e634SDaniel Mack cval->val_type == USB_MIXER_INV_BOOLEAN) { 850f0b5e634SDaniel Mack uinfo->value.integer.min = 0; 851f0b5e634SDaniel Mack uinfo->value.integer.max = 1; 852f0b5e634SDaniel Mack } else { 853f0b5e634SDaniel Mack if (! cval->initialized) 854f0b5e634SDaniel Mack get_min_max(cval, 0); 855f0b5e634SDaniel Mack uinfo->value.integer.min = 0; 856f0b5e634SDaniel Mack uinfo->value.integer.max = 857f0b5e634SDaniel Mack (cval->max - cval->min + cval->res - 1) / cval->res; 858f0b5e634SDaniel Mack } 859f0b5e634SDaniel Mack return 0; 860f0b5e634SDaniel Mack } 861f0b5e634SDaniel Mack 862f0b5e634SDaniel Mack /* get the current value from feature/mixer unit */ 863f0b5e634SDaniel Mack static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 864f0b5e634SDaniel Mack { 865f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 866f0b5e634SDaniel Mack int c, cnt, val, err; 867f0b5e634SDaniel Mack 868f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = cval->min; 869f0b5e634SDaniel Mack if (cval->cmask) { 870f0b5e634SDaniel Mack cnt = 0; 871f0b5e634SDaniel Mack for (c = 0; c < MAX_CHANNELS; c++) { 872f0b5e634SDaniel Mack if (!(cval->cmask & (1 << c))) 873f0b5e634SDaniel Mack continue; 874f0b5e634SDaniel Mack err = get_cur_mix_value(cval, c + 1, cnt, &val); 875f0b5e634SDaniel Mack if (err < 0) 876f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 877f0b5e634SDaniel Mack val = get_relative_value(cval, val); 878f0b5e634SDaniel Mack ucontrol->value.integer.value[cnt] = val; 879f0b5e634SDaniel Mack cnt++; 880f0b5e634SDaniel Mack } 881f0b5e634SDaniel Mack return 0; 882f0b5e634SDaniel Mack } else { 883f0b5e634SDaniel Mack /* master channel */ 884f0b5e634SDaniel Mack err = get_cur_mix_value(cval, 0, 0, &val); 885f0b5e634SDaniel Mack if (err < 0) 886f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 887f0b5e634SDaniel Mack val = get_relative_value(cval, val); 888f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = val; 889f0b5e634SDaniel Mack } 890f0b5e634SDaniel Mack return 0; 891f0b5e634SDaniel Mack } 892f0b5e634SDaniel Mack 893f0b5e634SDaniel Mack /* put the current value to feature/mixer unit */ 894f0b5e634SDaniel Mack static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 895f0b5e634SDaniel Mack { 896f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 897f0b5e634SDaniel Mack int c, cnt, val, oval, err; 898f0b5e634SDaniel Mack int changed = 0; 899f0b5e634SDaniel Mack 900f0b5e634SDaniel Mack if (cval->cmask) { 901f0b5e634SDaniel Mack cnt = 0; 902f0b5e634SDaniel Mack for (c = 0; c < MAX_CHANNELS; c++) { 903f0b5e634SDaniel Mack if (!(cval->cmask & (1 << c))) 904f0b5e634SDaniel Mack continue; 905f0b5e634SDaniel Mack err = get_cur_mix_value(cval, c + 1, cnt, &oval); 906f0b5e634SDaniel Mack if (err < 0) 907f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 908f0b5e634SDaniel Mack val = ucontrol->value.integer.value[cnt]; 909f0b5e634SDaniel Mack val = get_abs_value(cval, val); 910f0b5e634SDaniel Mack if (oval != val) { 911f0b5e634SDaniel Mack set_cur_mix_value(cval, c + 1, cnt, val); 912f0b5e634SDaniel Mack changed = 1; 913f0b5e634SDaniel Mack } 914f0b5e634SDaniel Mack cnt++; 915f0b5e634SDaniel Mack } 916f0b5e634SDaniel Mack } else { 917f0b5e634SDaniel Mack /* master channel */ 918f0b5e634SDaniel Mack err = get_cur_mix_value(cval, 0, 0, &oval); 919f0b5e634SDaniel Mack if (err < 0) 920f0b5e634SDaniel Mack return cval->mixer->ignore_ctl_error ? 0 : err; 921f0b5e634SDaniel Mack val = ucontrol->value.integer.value[0]; 922f0b5e634SDaniel Mack val = get_abs_value(cval, val); 923f0b5e634SDaniel Mack if (val != oval) { 924f0b5e634SDaniel Mack set_cur_mix_value(cval, 0, 0, val); 925f0b5e634SDaniel Mack changed = 1; 926f0b5e634SDaniel Mack } 927f0b5e634SDaniel Mack } 928f0b5e634SDaniel Mack return changed; 929f0b5e634SDaniel Mack } 930f0b5e634SDaniel Mack 931f0b5e634SDaniel Mack static struct snd_kcontrol_new usb_feature_unit_ctl = { 932f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 933f0b5e634SDaniel Mack .name = "", /* will be filled later manually */ 934f0b5e634SDaniel Mack .info = mixer_ctl_feature_info, 935f0b5e634SDaniel Mack .get = mixer_ctl_feature_get, 936f0b5e634SDaniel Mack .put = mixer_ctl_feature_put, 937f0b5e634SDaniel Mack }; 938f0b5e634SDaniel Mack 93923caaf19SDaniel Mack /* the read-only variant */ 94023caaf19SDaniel Mack static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { 94123caaf19SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 94223caaf19SDaniel Mack .name = "", /* will be filled later manually */ 94323caaf19SDaniel Mack .info = mixer_ctl_feature_info, 94423caaf19SDaniel Mack .get = mixer_ctl_feature_get, 94523caaf19SDaniel Mack .put = NULL, 94623caaf19SDaniel Mack }; 94723caaf19SDaniel Mack 948f0b5e634SDaniel Mack 949f0b5e634SDaniel Mack /* 950f0b5e634SDaniel Mack * build a feature control 951f0b5e634SDaniel Mack */ 952f0b5e634SDaniel Mack 953f0b5e634SDaniel Mack static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) 954f0b5e634SDaniel Mack { 955f0b5e634SDaniel Mack return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); 956f0b5e634SDaniel Mack } 957f0b5e634SDaniel Mack 95899fc8645SDaniel Mack static void build_feature_ctl(struct mixer_build *state, void *raw_desc, 959f0b5e634SDaniel Mack unsigned int ctl_mask, int control, 96023caaf19SDaniel Mack struct usb_audio_term *iterm, int unitid, 96123caaf19SDaniel Mack int read_only) 962f0b5e634SDaniel Mack { 96399fc8645SDaniel Mack struct uac_feature_unit_descriptor *desc = raw_desc; 964f0b5e634SDaniel Mack unsigned int len = 0; 965f0b5e634SDaniel Mack int mapped_name = 0; 96699fc8645SDaniel Mack int nameid = uac_feature_unit_iFeature(desc); 967f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 968f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 969f0b5e634SDaniel Mack const struct usbmix_name_map *map; 970f0b5e634SDaniel Mack 971f0b5e634SDaniel Mack control++; /* change from zero-based to 1-based value */ 972f0b5e634SDaniel Mack 973f0b5e634SDaniel Mack if (control == UAC_GRAPHIC_EQUALIZER_CONTROL) { 974f0b5e634SDaniel Mack /* FIXME: not supported yet */ 975f0b5e634SDaniel Mack return; 976f0b5e634SDaniel Mack } 977f0b5e634SDaniel Mack 978f0b5e634SDaniel Mack map = find_map(state, unitid, control); 979f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 980f0b5e634SDaniel Mack return; 981f0b5e634SDaniel Mack 982f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 983f0b5e634SDaniel Mack if (! cval) { 984f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 985f0b5e634SDaniel Mack return; 986f0b5e634SDaniel Mack } 987f0b5e634SDaniel Mack cval->mixer = state->mixer; 988f0b5e634SDaniel Mack cval->id = unitid; 989f0b5e634SDaniel Mack cval->control = control; 990f0b5e634SDaniel Mack cval->cmask = ctl_mask; 991f0b5e634SDaniel Mack cval->val_type = audio_feature_info[control-1].type; 992f0b5e634SDaniel Mack if (ctl_mask == 0) 993f0b5e634SDaniel Mack cval->channels = 1; /* master channel */ 994f0b5e634SDaniel Mack else { 995f0b5e634SDaniel Mack int i, c = 0; 996f0b5e634SDaniel Mack for (i = 0; i < 16; i++) 997f0b5e634SDaniel Mack if (ctl_mask & (1 << i)) 998f0b5e634SDaniel Mack c++; 999f0b5e634SDaniel Mack cval->channels = c; 1000f0b5e634SDaniel Mack } 1001f0b5e634SDaniel Mack 1002f0b5e634SDaniel Mack /* get min/max values */ 1003f0b5e634SDaniel Mack get_min_max(cval, 0); 1004f0b5e634SDaniel Mack 100523caaf19SDaniel Mack if (read_only) 100623caaf19SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); 100723caaf19SDaniel Mack else 1008f0b5e634SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 100923caaf19SDaniel Mack 1010f0b5e634SDaniel Mack if (! kctl) { 1011f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1012f0b5e634SDaniel Mack kfree(cval); 1013f0b5e634SDaniel Mack return; 1014f0b5e634SDaniel Mack } 1015f0b5e634SDaniel Mack kctl->private_free = usb_mixer_elem_free; 1016f0b5e634SDaniel Mack 1017f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1018f0b5e634SDaniel Mack mapped_name = len != 0; 1019f0b5e634SDaniel Mack if (! len && nameid) 1020f0b5e634SDaniel Mack len = snd_usb_copy_string_desc(state, nameid, 1021f0b5e634SDaniel Mack kctl->id.name, sizeof(kctl->id.name)); 1022f0b5e634SDaniel Mack 1023f0b5e634SDaniel Mack switch (control) { 1024f0b5e634SDaniel Mack case UAC_MUTE_CONTROL: 1025f0b5e634SDaniel Mack case UAC_VOLUME_CONTROL: 1026f0b5e634SDaniel Mack /* determine the control name. the rule is: 1027f0b5e634SDaniel Mack * - if a name id is given in descriptor, use it. 1028f0b5e634SDaniel Mack * - if the connected input can be determined, then use the name 1029f0b5e634SDaniel Mack * of terminal type. 1030f0b5e634SDaniel Mack * - if the connected output can be determined, use it. 1031f0b5e634SDaniel Mack * - otherwise, anonymous name. 1032f0b5e634SDaniel Mack */ 1033f0b5e634SDaniel Mack if (! len) { 1034f0b5e634SDaniel Mack len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); 1035f0b5e634SDaniel Mack if (! len) 1036f0b5e634SDaniel Mack len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); 1037f0b5e634SDaniel Mack if (! len) 1038f0b5e634SDaniel Mack len = snprintf(kctl->id.name, sizeof(kctl->id.name), 1039f0b5e634SDaniel Mack "Feature %d", unitid); 1040f0b5e634SDaniel Mack } 1041f0b5e634SDaniel Mack /* determine the stream direction: 1042f0b5e634SDaniel Mack * if the connected output is USB stream, then it's likely a 1043f0b5e634SDaniel Mack * capture stream. otherwise it should be playback (hopefully :) 1044f0b5e634SDaniel Mack */ 1045f0b5e634SDaniel Mack if (! mapped_name && ! (state->oterm.type >> 16)) { 1046f0b5e634SDaniel Mack if ((state->oterm.type & 0xff00) == 0x0100) { 1047f0b5e634SDaniel Mack len = append_ctl_name(kctl, " Capture"); 1048f0b5e634SDaniel Mack } else { 1049f0b5e634SDaniel Mack len = append_ctl_name(kctl, " Playback"); 1050f0b5e634SDaniel Mack } 1051f0b5e634SDaniel Mack } 1052f0b5e634SDaniel Mack append_ctl_name(kctl, control == UAC_MUTE_CONTROL ? 1053f0b5e634SDaniel Mack " Switch" : " Volume"); 1054f0b5e634SDaniel Mack if (control == UAC_VOLUME_CONTROL) { 1055f0b5e634SDaniel Mack kctl->tlv.c = mixer_vol_tlv; 1056f0b5e634SDaniel Mack kctl->vd[0].access |= 1057f0b5e634SDaniel Mack SNDRV_CTL_ELEM_ACCESS_TLV_READ | 1058f0b5e634SDaniel Mack SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; 1059f0b5e634SDaniel Mack check_mapped_dB(map, cval); 1060f0b5e634SDaniel Mack } 1061f0b5e634SDaniel Mack break; 1062f0b5e634SDaniel Mack 1063f0b5e634SDaniel Mack default: 1064f0b5e634SDaniel Mack if (! len) 1065f0b5e634SDaniel Mack strlcpy(kctl->id.name, audio_feature_info[control-1].name, 1066f0b5e634SDaniel Mack sizeof(kctl->id.name)); 1067f0b5e634SDaniel Mack break; 1068f0b5e634SDaniel Mack } 1069f0b5e634SDaniel Mack 1070f0b5e634SDaniel Mack /* volume control quirks */ 1071f0b5e634SDaniel Mack switch (state->chip->usb_id) { 1072f0b5e634SDaniel Mack case USB_ID(0x0471, 0x0101): 1073f0b5e634SDaniel Mack case USB_ID(0x0471, 0x0104): 1074f0b5e634SDaniel Mack case USB_ID(0x0471, 0x0105): 1075f0b5e634SDaniel Mack case USB_ID(0x0672, 0x1041): 1076f0b5e634SDaniel Mack /* quirk for UDA1321/N101. 1077f0b5e634SDaniel Mack * note that detection between firmware 2.1.1.7 (N101) 1078f0b5e634SDaniel Mack * and later 2.1.1.21 is not very clear from datasheets. 1079f0b5e634SDaniel Mack * I hope that the min value is -15360 for newer firmware --jk 1080f0b5e634SDaniel Mack */ 1081f0b5e634SDaniel Mack if (!strcmp(kctl->id.name, "PCM Playback Volume") && 1082f0b5e634SDaniel Mack cval->min == -15616) { 1083f0b5e634SDaniel Mack snd_printk(KERN_INFO 1084f0b5e634SDaniel Mack "set volume quirk for UDA1321/N101 chip\n"); 1085f0b5e634SDaniel Mack cval->max = -256; 1086f0b5e634SDaniel Mack } 1087f0b5e634SDaniel Mack break; 1088f0b5e634SDaniel Mack 1089f0b5e634SDaniel Mack case USB_ID(0x046d, 0x09a4): 1090f0b5e634SDaniel Mack if (!strcmp(kctl->id.name, "Mic Capture Volume")) { 1091f0b5e634SDaniel Mack snd_printk(KERN_INFO 1092f0b5e634SDaniel Mack "set volume quirk for QuickCam E3500\n"); 1093f0b5e634SDaniel Mack cval->min = 6080; 1094f0b5e634SDaniel Mack cval->max = 8768; 1095f0b5e634SDaniel Mack cval->res = 192; 1096f0b5e634SDaniel Mack } 1097f0b5e634SDaniel Mack break; 1098f0b5e634SDaniel Mack 1099f0b5e634SDaniel Mack } 1100f0b5e634SDaniel Mack 1101f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", 1102f0b5e634SDaniel Mack cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); 1103f0b5e634SDaniel Mack add_control_to_empty(state, kctl); 1104f0b5e634SDaniel Mack } 1105f0b5e634SDaniel Mack 1106f0b5e634SDaniel Mack 1107f0b5e634SDaniel Mack 1108f0b5e634SDaniel Mack /* 1109f0b5e634SDaniel Mack * parse a feature unit 1110f0b5e634SDaniel Mack * 1111f0b5e634SDaniel Mack * most of controlls are defined here. 1112f0b5e634SDaniel Mack */ 1113f0b5e634SDaniel Mack static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr) 1114f0b5e634SDaniel Mack { 1115f0b5e634SDaniel Mack int channels, i, j; 1116f0b5e634SDaniel Mack struct usb_audio_term iterm; 1117f0b5e634SDaniel Mack unsigned int master_bits, first_ch_bits; 1118f0b5e634SDaniel Mack int err, csize; 111923caaf19SDaniel Mack struct uac_feature_unit_descriptor *hdr = _ftr; 112023caaf19SDaniel Mack __u8 *bmaControls; 1121f0b5e634SDaniel Mack 112223caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 112323caaf19SDaniel Mack csize = hdr->bControlSize; 112423caaf19SDaniel Mack channels = (hdr->bLength - 7) / csize - 1; 112523caaf19SDaniel Mack bmaControls = hdr->bmaControls; 112623caaf19SDaniel Mack } else { 112723caaf19SDaniel Mack struct uac2_feature_unit_descriptor *ftr = _ftr; 112823caaf19SDaniel Mack csize = 4; 112923caaf19SDaniel Mack channels = (hdr->bLength - 6) / 4; 113023caaf19SDaniel Mack bmaControls = ftr->bmaControls; 113123caaf19SDaniel Mack } 113223caaf19SDaniel Mack 113323caaf19SDaniel Mack if (hdr->bLength < 7 || !csize || hdr->bLength < 7 + csize) { 1134f0b5e634SDaniel Mack snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid); 1135f0b5e634SDaniel Mack return -EINVAL; 1136f0b5e634SDaniel Mack } 1137f0b5e634SDaniel Mack 1138f0b5e634SDaniel Mack /* parse the source unit */ 113923caaf19SDaniel Mack if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0) 1140f0b5e634SDaniel Mack return err; 1141f0b5e634SDaniel Mack 1142f0b5e634SDaniel Mack /* determine the input source type and name */ 114323caaf19SDaniel Mack if (check_input_term(state, hdr->bSourceID, &iterm) < 0) 1144f0b5e634SDaniel Mack return -EINVAL; 1145f0b5e634SDaniel Mack 114623caaf19SDaniel Mack master_bits = snd_usb_combine_bytes(bmaControls, csize); 1147f0b5e634SDaniel Mack /* master configuration quirks */ 1148f0b5e634SDaniel Mack switch (state->chip->usb_id) { 1149f0b5e634SDaniel Mack case USB_ID(0x08bb, 0x2702): 1150f0b5e634SDaniel Mack snd_printk(KERN_INFO 1151f0b5e634SDaniel Mack "usbmixer: master volume quirk for PCM2702 chip\n"); 1152f0b5e634SDaniel Mack /* disable non-functional volume control */ 1153f0b5e634SDaniel Mack master_bits &= ~UAC_FU_VOLUME; 1154f0b5e634SDaniel Mack break; 1155f0b5e634SDaniel Mack } 1156f0b5e634SDaniel Mack if (channels > 0) 115723caaf19SDaniel Mack first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); 1158f0b5e634SDaniel Mack else 1159f0b5e634SDaniel Mack first_ch_bits = 0; 116023caaf19SDaniel Mack 116123caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) { 1162f0b5e634SDaniel Mack /* check all control types */ 1163f0b5e634SDaniel Mack for (i = 0; i < 10; i++) { 1164f0b5e634SDaniel Mack unsigned int ch_bits = 0; 1165f0b5e634SDaniel Mack for (j = 0; j < channels; j++) { 116623caaf19SDaniel Mack unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); 1167f0b5e634SDaniel Mack if (mask & (1 << i)) 1168f0b5e634SDaniel Mack ch_bits |= (1 << j); 1169f0b5e634SDaniel Mack } 117023caaf19SDaniel Mack /* audio class v1 controls are never read-only */ 1171f0b5e634SDaniel Mack if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ 117223caaf19SDaniel Mack build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0); 1173f0b5e634SDaniel Mack if (master_bits & (1 << i)) 117423caaf19SDaniel Mack build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0); 117523caaf19SDaniel Mack } 117623caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 117723caaf19SDaniel Mack for (i = 0; i < 30/2; i++) { 117823caaf19SDaniel Mack /* From the USB Audio spec v2.0: 117923caaf19SDaniel Mack bmaControls() is a (ch+1)-element array of 4-byte bitmaps, 118023caaf19SDaniel Mack each containing a set of bit pairs. If a Control is present, 118123caaf19SDaniel Mack it must be Host readable. If a certain Control is not 118223caaf19SDaniel Mack present then the bit pair must be set to 0b00. 118323caaf19SDaniel Mack If a Control is present but read-only, the bit pair must be 118423caaf19SDaniel Mack set to 0b01. If a Control is also Host programmable, the bit 118523caaf19SDaniel Mack pair must be set to 0b11. The value 0b10 is not allowed. */ 118623caaf19SDaniel Mack unsigned int ch_bits = 0; 118723caaf19SDaniel Mack unsigned int ch_read_only = 0; 118823caaf19SDaniel Mack 118923caaf19SDaniel Mack for (j = 0; j < channels; j++) { 119023caaf19SDaniel Mack unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); 119123caaf19SDaniel Mack if (mask & (1 << (i * 2))) { 119223caaf19SDaniel Mack ch_bits |= (1 << j); 119323caaf19SDaniel Mack if (~mask & (1 << ((i * 2) + 1))) 119423caaf19SDaniel Mack ch_read_only |= (1 << j); 119523caaf19SDaniel Mack } 119623caaf19SDaniel Mack } 119723caaf19SDaniel Mack 119823caaf19SDaniel Mack /* FIXME: the whole unit is read-only if any of the channels is marked read-only */ 119923caaf19SDaniel Mack if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ 120023caaf19SDaniel Mack build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, !!ch_read_only); 120123caaf19SDaniel Mack if (master_bits & (1 << i * 2)) 120223caaf19SDaniel Mack build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 120323caaf19SDaniel Mack ~master_bits & (1 << ((i * 2) + 1))); 120423caaf19SDaniel Mack } 1205f0b5e634SDaniel Mack } 1206f0b5e634SDaniel Mack 1207f0b5e634SDaniel Mack return 0; 1208f0b5e634SDaniel Mack } 1209f0b5e634SDaniel Mack 1210f0b5e634SDaniel Mack 1211f0b5e634SDaniel Mack /* 1212f0b5e634SDaniel Mack * Mixer Unit 1213f0b5e634SDaniel Mack */ 1214f0b5e634SDaniel Mack 1215f0b5e634SDaniel Mack /* 1216f0b5e634SDaniel Mack * build a mixer unit control 1217f0b5e634SDaniel Mack * 1218f0b5e634SDaniel Mack * the callbacks are identical with feature unit. 1219f0b5e634SDaniel Mack * input channel number (zero based) is given in control field instead. 1220f0b5e634SDaniel Mack */ 1221f0b5e634SDaniel Mack 122299fc8645SDaniel Mack static void build_mixer_unit_ctl(struct mixer_build *state, 122399fc8645SDaniel Mack struct uac_mixer_unit_descriptor *desc, 1224f0b5e634SDaniel Mack int in_pin, int in_ch, int unitid, 1225f0b5e634SDaniel Mack struct usb_audio_term *iterm) 1226f0b5e634SDaniel Mack { 1227f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 122899fc8645SDaniel Mack unsigned int num_outs = uac_mixer_unit_bNrChannels(desc); 1229f0b5e634SDaniel Mack unsigned int i, len; 1230f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1231f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1232f0b5e634SDaniel Mack 1233f0b5e634SDaniel Mack map = find_map(state, unitid, 0); 1234f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1235f0b5e634SDaniel Mack return; 1236f0b5e634SDaniel Mack 1237f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1238f0b5e634SDaniel Mack if (! cval) 1239f0b5e634SDaniel Mack return; 1240f0b5e634SDaniel Mack 1241f0b5e634SDaniel Mack cval->mixer = state->mixer; 1242f0b5e634SDaniel Mack cval->id = unitid; 1243f0b5e634SDaniel Mack cval->control = in_ch + 1; /* based on 1 */ 1244f0b5e634SDaniel Mack cval->val_type = USB_MIXER_S16; 1245f0b5e634SDaniel Mack for (i = 0; i < num_outs; i++) { 124623caaf19SDaniel Mack if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) { 1247f0b5e634SDaniel Mack cval->cmask |= (1 << i); 1248f0b5e634SDaniel Mack cval->channels++; 1249f0b5e634SDaniel Mack } 1250f0b5e634SDaniel Mack } 1251f0b5e634SDaniel Mack 1252f0b5e634SDaniel Mack /* get min/max values */ 1253f0b5e634SDaniel Mack get_min_max(cval, 0); 1254f0b5e634SDaniel Mack 1255f0b5e634SDaniel Mack kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); 1256f0b5e634SDaniel Mack if (! kctl) { 1257f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1258f0b5e634SDaniel Mack kfree(cval); 1259f0b5e634SDaniel Mack return; 1260f0b5e634SDaniel Mack } 1261f0b5e634SDaniel Mack kctl->private_free = usb_mixer_elem_free; 1262f0b5e634SDaniel Mack 1263f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1264f0b5e634SDaniel Mack if (! len) 1265f0b5e634SDaniel Mack len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); 1266f0b5e634SDaniel Mack if (! len) 1267f0b5e634SDaniel Mack len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); 1268f0b5e634SDaniel Mack append_ctl_name(kctl, " Volume"); 1269f0b5e634SDaniel Mack 1270f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", 1271f0b5e634SDaniel Mack cval->id, kctl->id.name, cval->channels, cval->min, cval->max); 1272f0b5e634SDaniel Mack add_control_to_empty(state, kctl); 1273f0b5e634SDaniel Mack } 1274f0b5e634SDaniel Mack 1275f0b5e634SDaniel Mack 1276f0b5e634SDaniel Mack /* 1277f0b5e634SDaniel Mack * parse a mixer unit 1278f0b5e634SDaniel Mack */ 127999fc8645SDaniel Mack static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *raw_desc) 1280f0b5e634SDaniel Mack { 128199fc8645SDaniel Mack struct uac_mixer_unit_descriptor *desc = raw_desc; 1282f0b5e634SDaniel Mack struct usb_audio_term iterm; 1283f0b5e634SDaniel Mack int input_pins, num_ins, num_outs; 1284f0b5e634SDaniel Mack int pin, ich, err; 1285f0b5e634SDaniel Mack 128699fc8645SDaniel Mack if (desc->bLength < 11 || ! (input_pins = desc->bNrInPins) || ! (num_outs = uac_mixer_unit_bNrChannels(desc))) { 1287f0b5e634SDaniel Mack snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); 1288f0b5e634SDaniel Mack return -EINVAL; 1289f0b5e634SDaniel Mack } 1290f0b5e634SDaniel Mack /* no bmControls field (e.g. Maya44) -> ignore */ 129199fc8645SDaniel Mack if (desc->bLength <= 10 + input_pins) { 1292f0b5e634SDaniel Mack snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); 1293f0b5e634SDaniel Mack return 0; 1294f0b5e634SDaniel Mack } 1295f0b5e634SDaniel Mack 1296f0b5e634SDaniel Mack num_ins = 0; 1297f0b5e634SDaniel Mack ich = 0; 1298f0b5e634SDaniel Mack for (pin = 0; pin < input_pins; pin++) { 129999fc8645SDaniel Mack err = parse_audio_unit(state, desc->baSourceID[pin]); 1300f0b5e634SDaniel Mack if (err < 0) 1301f0b5e634SDaniel Mack return err; 130299fc8645SDaniel Mack err = check_input_term(state, desc->baSourceID[pin], &iterm); 1303f0b5e634SDaniel Mack if (err < 0) 1304f0b5e634SDaniel Mack return err; 1305f0b5e634SDaniel Mack num_ins += iterm.channels; 1306f0b5e634SDaniel Mack for (; ich < num_ins; ++ich) { 1307f0b5e634SDaniel Mack int och, ich_has_controls = 0; 1308f0b5e634SDaniel Mack 1309f0b5e634SDaniel Mack for (och = 0; och < num_outs; ++och) { 131023caaf19SDaniel Mack if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), 1311f0b5e634SDaniel Mack ich, och, num_outs)) { 1312f0b5e634SDaniel Mack ich_has_controls = 1; 1313f0b5e634SDaniel Mack break; 1314f0b5e634SDaniel Mack } 1315f0b5e634SDaniel Mack } 1316f0b5e634SDaniel Mack if (ich_has_controls) 1317f0b5e634SDaniel Mack build_mixer_unit_ctl(state, desc, pin, ich, 1318f0b5e634SDaniel Mack unitid, &iterm); 1319f0b5e634SDaniel Mack } 1320f0b5e634SDaniel Mack } 1321f0b5e634SDaniel Mack return 0; 1322f0b5e634SDaniel Mack } 1323f0b5e634SDaniel Mack 1324f0b5e634SDaniel Mack 1325f0b5e634SDaniel Mack /* 1326f0b5e634SDaniel Mack * Processing Unit / Extension Unit 1327f0b5e634SDaniel Mack */ 1328f0b5e634SDaniel Mack 1329f0b5e634SDaniel Mack /* get callback for processing/extension unit */ 1330f0b5e634SDaniel Mack static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1331f0b5e634SDaniel Mack { 1332f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1333f0b5e634SDaniel Mack int err, val; 1334f0b5e634SDaniel Mack 1335f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &val); 1336f0b5e634SDaniel Mack if (err < 0 && cval->mixer->ignore_ctl_error) { 1337f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = cval->min; 1338f0b5e634SDaniel Mack return 0; 1339f0b5e634SDaniel Mack } 1340f0b5e634SDaniel Mack if (err < 0) 1341f0b5e634SDaniel Mack return err; 1342f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1343f0b5e634SDaniel Mack ucontrol->value.integer.value[0] = val; 1344f0b5e634SDaniel Mack return 0; 1345f0b5e634SDaniel Mack } 1346f0b5e634SDaniel Mack 1347f0b5e634SDaniel Mack /* put callback for processing/extension unit */ 1348f0b5e634SDaniel Mack static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1349f0b5e634SDaniel Mack { 1350f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1351f0b5e634SDaniel Mack int val, oval, err; 1352f0b5e634SDaniel Mack 1353f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, cval->control << 8, &oval); 1354f0b5e634SDaniel Mack if (err < 0) { 1355f0b5e634SDaniel Mack if (cval->mixer->ignore_ctl_error) 1356f0b5e634SDaniel Mack return 0; 1357f0b5e634SDaniel Mack return err; 1358f0b5e634SDaniel Mack } 1359f0b5e634SDaniel Mack val = ucontrol->value.integer.value[0]; 1360f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1361f0b5e634SDaniel Mack if (val != oval) { 1362f0b5e634SDaniel Mack set_cur_ctl_value(cval, cval->control << 8, val); 1363f0b5e634SDaniel Mack return 1; 1364f0b5e634SDaniel Mack } 1365f0b5e634SDaniel Mack return 0; 1366f0b5e634SDaniel Mack } 1367f0b5e634SDaniel Mack 1368f0b5e634SDaniel Mack /* alsa control interface for processing/extension unit */ 1369f0b5e634SDaniel Mack static struct snd_kcontrol_new mixer_procunit_ctl = { 1370f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1371f0b5e634SDaniel Mack .name = "", /* will be filled later */ 1372f0b5e634SDaniel Mack .info = mixer_ctl_feature_info, 1373f0b5e634SDaniel Mack .get = mixer_ctl_procunit_get, 1374f0b5e634SDaniel Mack .put = mixer_ctl_procunit_put, 1375f0b5e634SDaniel Mack }; 1376f0b5e634SDaniel Mack 1377f0b5e634SDaniel Mack 1378f0b5e634SDaniel Mack /* 1379f0b5e634SDaniel Mack * predefined data for processing units 1380f0b5e634SDaniel Mack */ 1381f0b5e634SDaniel Mack struct procunit_value_info { 1382f0b5e634SDaniel Mack int control; 1383f0b5e634SDaniel Mack char *suffix; 1384f0b5e634SDaniel Mack int val_type; 1385f0b5e634SDaniel Mack int min_value; 1386f0b5e634SDaniel Mack }; 1387f0b5e634SDaniel Mack 1388f0b5e634SDaniel Mack struct procunit_info { 1389f0b5e634SDaniel Mack int type; 1390f0b5e634SDaniel Mack char *name; 1391f0b5e634SDaniel Mack struct procunit_value_info *values; 1392f0b5e634SDaniel Mack }; 1393f0b5e634SDaniel Mack 1394f0b5e634SDaniel Mack static struct procunit_value_info updown_proc_info[] = { 1395f0b5e634SDaniel Mack { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1396f0b5e634SDaniel Mack { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, 1397f0b5e634SDaniel Mack { 0 } 1398f0b5e634SDaniel Mack }; 1399f0b5e634SDaniel Mack static struct procunit_value_info prologic_proc_info[] = { 1400f0b5e634SDaniel Mack { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1401f0b5e634SDaniel Mack { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, 1402f0b5e634SDaniel Mack { 0 } 1403f0b5e634SDaniel Mack }; 1404f0b5e634SDaniel Mack static struct procunit_value_info threed_enh_proc_info[] = { 1405f0b5e634SDaniel Mack { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1406f0b5e634SDaniel Mack { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 }, 1407f0b5e634SDaniel Mack { 0 } 1408f0b5e634SDaniel Mack }; 1409f0b5e634SDaniel Mack static struct procunit_value_info reverb_proc_info[] = { 1410f0b5e634SDaniel Mack { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1411f0b5e634SDaniel Mack { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, 1412f0b5e634SDaniel Mack { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 }, 1413f0b5e634SDaniel Mack { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 }, 1414f0b5e634SDaniel Mack { 0 } 1415f0b5e634SDaniel Mack }; 1416f0b5e634SDaniel Mack static struct procunit_value_info chorus_proc_info[] = { 1417f0b5e634SDaniel Mack { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1418f0b5e634SDaniel Mack { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, 1419f0b5e634SDaniel Mack { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, 1420f0b5e634SDaniel Mack { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, 1421f0b5e634SDaniel Mack { 0 } 1422f0b5e634SDaniel Mack }; 1423f0b5e634SDaniel Mack static struct procunit_value_info dcr_proc_info[] = { 1424f0b5e634SDaniel Mack { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN }, 1425f0b5e634SDaniel Mack { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 }, 1426f0b5e634SDaniel Mack { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 }, 1427f0b5e634SDaniel Mack { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, 1428f0b5e634SDaniel Mack { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 }, 1429f0b5e634SDaniel Mack { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 }, 1430f0b5e634SDaniel Mack { 0 } 1431f0b5e634SDaniel Mack }; 1432f0b5e634SDaniel Mack 1433f0b5e634SDaniel Mack static struct procunit_info procunits[] = { 1434f0b5e634SDaniel Mack { USB_PROC_UPDOWN, "Up Down", updown_proc_info }, 1435f0b5e634SDaniel Mack { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info }, 1436f0b5e634SDaniel Mack { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info }, 1437f0b5e634SDaniel Mack { USB_PROC_REVERB, "Reverb", reverb_proc_info }, 1438f0b5e634SDaniel Mack { USB_PROC_CHORUS, "Chorus", chorus_proc_info }, 1439f0b5e634SDaniel Mack { USB_PROC_DCR, "DCR", dcr_proc_info }, 1440f0b5e634SDaniel Mack { 0 }, 1441f0b5e634SDaniel Mack }; 1442f0b5e634SDaniel Mack /* 1443f0b5e634SDaniel Mack * predefined data for extension units 1444f0b5e634SDaniel Mack */ 1445f0b5e634SDaniel Mack static struct procunit_value_info clock_rate_xu_info[] = { 1446f0b5e634SDaniel Mack { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, 1447f0b5e634SDaniel Mack { 0 } 1448f0b5e634SDaniel Mack }; 1449f0b5e634SDaniel Mack static struct procunit_value_info clock_source_xu_info[] = { 1450f0b5e634SDaniel Mack { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, 1451f0b5e634SDaniel Mack { 0 } 1452f0b5e634SDaniel Mack }; 1453f0b5e634SDaniel Mack static struct procunit_value_info spdif_format_xu_info[] = { 1454f0b5e634SDaniel Mack { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, 1455f0b5e634SDaniel Mack { 0 } 1456f0b5e634SDaniel Mack }; 1457f0b5e634SDaniel Mack static struct procunit_value_info soft_limit_xu_info[] = { 1458f0b5e634SDaniel Mack { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, 1459f0b5e634SDaniel Mack { 0 } 1460f0b5e634SDaniel Mack }; 1461f0b5e634SDaniel Mack static struct procunit_info extunits[] = { 1462f0b5e634SDaniel Mack { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, 1463f0b5e634SDaniel Mack { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, 1464f0b5e634SDaniel Mack { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, 1465f0b5e634SDaniel Mack { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, 1466f0b5e634SDaniel Mack { 0 } 1467f0b5e634SDaniel Mack }; 1468f0b5e634SDaniel Mack /* 1469f0b5e634SDaniel Mack * build a processing/extension unit 1470f0b5e634SDaniel Mack */ 147199fc8645SDaniel Mack static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw_desc, struct procunit_info *list, char *name) 1472f0b5e634SDaniel Mack { 147399fc8645SDaniel Mack struct uac_processing_unit_descriptor *desc = raw_desc; 147499fc8645SDaniel Mack int num_ins = desc->bNrInPins; 1475f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1476f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1477f0b5e634SDaniel Mack int i, err, nameid, type, len; 1478f0b5e634SDaniel Mack struct procunit_info *info; 1479f0b5e634SDaniel Mack struct procunit_value_info *valinfo; 1480f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1481f0b5e634SDaniel Mack static struct procunit_value_info default_value_info[] = { 1482f0b5e634SDaniel Mack { 0x01, "Switch", USB_MIXER_BOOLEAN }, 1483f0b5e634SDaniel Mack { 0 } 1484f0b5e634SDaniel Mack }; 1485f0b5e634SDaniel Mack static struct procunit_info default_info = { 1486f0b5e634SDaniel Mack 0, NULL, default_value_info 1487f0b5e634SDaniel Mack }; 1488f0b5e634SDaniel Mack 148923caaf19SDaniel Mack if (desc->bLength < 13 || desc->bLength < 13 + num_ins || 149023caaf19SDaniel Mack desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { 1491f0b5e634SDaniel Mack snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); 1492f0b5e634SDaniel Mack return -EINVAL; 1493f0b5e634SDaniel Mack } 1494f0b5e634SDaniel Mack 1495f0b5e634SDaniel Mack for (i = 0; i < num_ins; i++) { 149699fc8645SDaniel Mack if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) 1497f0b5e634SDaniel Mack return err; 1498f0b5e634SDaniel Mack } 1499f0b5e634SDaniel Mack 150099fc8645SDaniel Mack type = le16_to_cpu(desc->wProcessType); 1501f0b5e634SDaniel Mack for (info = list; info && info->type; info++) 1502f0b5e634SDaniel Mack if (info->type == type) 1503f0b5e634SDaniel Mack break; 1504f0b5e634SDaniel Mack if (! info || ! info->type) 1505f0b5e634SDaniel Mack info = &default_info; 1506f0b5e634SDaniel Mack 1507f0b5e634SDaniel Mack for (valinfo = info->values; valinfo->control; valinfo++) { 150823caaf19SDaniel Mack __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); 150999fc8645SDaniel Mack 151099fc8645SDaniel Mack if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1)))) 1511f0b5e634SDaniel Mack continue; 1512f0b5e634SDaniel Mack map = find_map(state, unitid, valinfo->control); 1513f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1514f0b5e634SDaniel Mack continue; 1515f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1516f0b5e634SDaniel Mack if (! cval) { 1517f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1518f0b5e634SDaniel Mack return -ENOMEM; 1519f0b5e634SDaniel Mack } 1520f0b5e634SDaniel Mack cval->mixer = state->mixer; 1521f0b5e634SDaniel Mack cval->id = unitid; 1522f0b5e634SDaniel Mack cval->control = valinfo->control; 1523f0b5e634SDaniel Mack cval->val_type = valinfo->val_type; 1524f0b5e634SDaniel Mack cval->channels = 1; 1525f0b5e634SDaniel Mack 1526f0b5e634SDaniel Mack /* get min/max values */ 1527f0b5e634SDaniel Mack if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) { 152823caaf19SDaniel Mack __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); 1529f0b5e634SDaniel Mack /* FIXME: hard-coded */ 1530f0b5e634SDaniel Mack cval->min = 1; 153199fc8645SDaniel Mack cval->max = control_spec[0]; 1532f0b5e634SDaniel Mack cval->res = 1; 1533f0b5e634SDaniel Mack cval->initialized = 1; 1534f0b5e634SDaniel Mack } else { 1535f0b5e634SDaniel Mack if (type == USB_XU_CLOCK_RATE) { 1536f0b5e634SDaniel Mack /* E-Mu USB 0404/0202/TrackerPre 1537f0b5e634SDaniel Mack * samplerate control quirk 1538f0b5e634SDaniel Mack */ 1539f0b5e634SDaniel Mack cval->min = 0; 1540f0b5e634SDaniel Mack cval->max = 5; 1541f0b5e634SDaniel Mack cval->res = 1; 1542f0b5e634SDaniel Mack cval->initialized = 1; 1543f0b5e634SDaniel Mack } else 1544f0b5e634SDaniel Mack get_min_max(cval, valinfo->min_value); 1545f0b5e634SDaniel Mack } 1546f0b5e634SDaniel Mack 1547f0b5e634SDaniel Mack kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); 1548f0b5e634SDaniel Mack if (! kctl) { 1549f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1550f0b5e634SDaniel Mack kfree(cval); 1551f0b5e634SDaniel Mack return -ENOMEM; 1552f0b5e634SDaniel Mack } 1553f0b5e634SDaniel Mack kctl->private_free = usb_mixer_elem_free; 1554f0b5e634SDaniel Mack 1555f0b5e634SDaniel Mack if (check_mapped_name(map, kctl->id.name, 1556f0b5e634SDaniel Mack sizeof(kctl->id.name))) 1557f0b5e634SDaniel Mack /* nothing */ ; 1558f0b5e634SDaniel Mack else if (info->name) 1559f0b5e634SDaniel Mack strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); 1560f0b5e634SDaniel Mack else { 156123caaf19SDaniel Mack nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); 1562f0b5e634SDaniel Mack len = 0; 1563f0b5e634SDaniel Mack if (nameid) 1564f0b5e634SDaniel Mack len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 1565f0b5e634SDaniel Mack if (! len) 1566f0b5e634SDaniel Mack strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); 1567f0b5e634SDaniel Mack } 1568f0b5e634SDaniel Mack append_ctl_name(kctl, " "); 1569f0b5e634SDaniel Mack append_ctl_name(kctl, valinfo->suffix); 1570f0b5e634SDaniel Mack 1571f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", 1572f0b5e634SDaniel Mack cval->id, kctl->id.name, cval->channels, cval->min, cval->max); 1573f0b5e634SDaniel Mack if ((err = add_control_to_empty(state, kctl)) < 0) 1574f0b5e634SDaniel Mack return err; 1575f0b5e634SDaniel Mack } 1576f0b5e634SDaniel Mack return 0; 1577f0b5e634SDaniel Mack } 1578f0b5e634SDaniel Mack 1579f0b5e634SDaniel Mack 158099fc8645SDaniel Mack static int parse_audio_processing_unit(struct mixer_build *state, int unitid, void *raw_desc) 1581f0b5e634SDaniel Mack { 158299fc8645SDaniel Mack return build_audio_procunit(state, unitid, raw_desc, procunits, "Processing Unit"); 1583f0b5e634SDaniel Mack } 1584f0b5e634SDaniel Mack 158599fc8645SDaniel Mack static int parse_audio_extension_unit(struct mixer_build *state, int unitid, void *raw_desc) 1586f0b5e634SDaniel Mack { 158799fc8645SDaniel Mack /* Note that we parse extension units with processing unit descriptors. 158899fc8645SDaniel Mack * That's ok as the layout is the same */ 158999fc8645SDaniel Mack return build_audio_procunit(state, unitid, raw_desc, extunits, "Extension Unit"); 1590f0b5e634SDaniel Mack } 1591f0b5e634SDaniel Mack 1592f0b5e634SDaniel Mack 1593f0b5e634SDaniel Mack /* 1594f0b5e634SDaniel Mack * Selector Unit 1595f0b5e634SDaniel Mack */ 1596f0b5e634SDaniel Mack 1597f0b5e634SDaniel Mack /* info callback for selector unit 1598f0b5e634SDaniel Mack * use an enumerator type for routing 1599f0b5e634SDaniel Mack */ 1600f0b5e634SDaniel Mack static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 1601f0b5e634SDaniel Mack { 1602f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1603f0b5e634SDaniel Mack char **itemlist = (char **)kcontrol->private_value; 1604f0b5e634SDaniel Mack 1605f0b5e634SDaniel Mack if (snd_BUG_ON(!itemlist)) 1606f0b5e634SDaniel Mack return -EINVAL; 1607f0b5e634SDaniel Mack uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 1608f0b5e634SDaniel Mack uinfo->count = 1; 1609f0b5e634SDaniel Mack uinfo->value.enumerated.items = cval->max; 1610f0b5e634SDaniel Mack if ((int)uinfo->value.enumerated.item >= cval->max) 1611f0b5e634SDaniel Mack uinfo->value.enumerated.item = cval->max - 1; 1612f0b5e634SDaniel Mack strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]); 1613f0b5e634SDaniel Mack return 0; 1614f0b5e634SDaniel Mack } 1615f0b5e634SDaniel Mack 1616f0b5e634SDaniel Mack /* get callback for selector unit */ 1617f0b5e634SDaniel Mack static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1618f0b5e634SDaniel Mack { 1619f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1620f0b5e634SDaniel Mack int val, err; 1621f0b5e634SDaniel Mack 1622f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, 0, &val); 1623f0b5e634SDaniel Mack if (err < 0) { 1624f0b5e634SDaniel Mack if (cval->mixer->ignore_ctl_error) { 1625f0b5e634SDaniel Mack ucontrol->value.enumerated.item[0] = 0; 1626f0b5e634SDaniel Mack return 0; 1627f0b5e634SDaniel Mack } 1628f0b5e634SDaniel Mack return err; 1629f0b5e634SDaniel Mack } 1630f0b5e634SDaniel Mack val = get_relative_value(cval, val); 1631f0b5e634SDaniel Mack ucontrol->value.enumerated.item[0] = val; 1632f0b5e634SDaniel Mack return 0; 1633f0b5e634SDaniel Mack } 1634f0b5e634SDaniel Mack 1635f0b5e634SDaniel Mack /* put callback for selector unit */ 1636f0b5e634SDaniel Mack static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1637f0b5e634SDaniel Mack { 1638f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kcontrol->private_data; 1639f0b5e634SDaniel Mack int val, oval, err; 1640f0b5e634SDaniel Mack 1641f0b5e634SDaniel Mack err = get_cur_ctl_value(cval, 0, &oval); 1642f0b5e634SDaniel Mack if (err < 0) { 1643f0b5e634SDaniel Mack if (cval->mixer->ignore_ctl_error) 1644f0b5e634SDaniel Mack return 0; 1645f0b5e634SDaniel Mack return err; 1646f0b5e634SDaniel Mack } 1647f0b5e634SDaniel Mack val = ucontrol->value.enumerated.item[0]; 1648f0b5e634SDaniel Mack val = get_abs_value(cval, val); 1649f0b5e634SDaniel Mack if (val != oval) { 1650f0b5e634SDaniel Mack set_cur_ctl_value(cval, 0, val); 1651f0b5e634SDaniel Mack return 1; 1652f0b5e634SDaniel Mack } 1653f0b5e634SDaniel Mack return 0; 1654f0b5e634SDaniel Mack } 1655f0b5e634SDaniel Mack 1656f0b5e634SDaniel Mack /* alsa control interface for selector unit */ 1657f0b5e634SDaniel Mack static struct snd_kcontrol_new mixer_selectunit_ctl = { 1658f0b5e634SDaniel Mack .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1659f0b5e634SDaniel Mack .name = "", /* will be filled later */ 1660f0b5e634SDaniel Mack .info = mixer_ctl_selector_info, 1661f0b5e634SDaniel Mack .get = mixer_ctl_selector_get, 1662f0b5e634SDaniel Mack .put = mixer_ctl_selector_put, 1663f0b5e634SDaniel Mack }; 1664f0b5e634SDaniel Mack 1665f0b5e634SDaniel Mack 1666f0b5e634SDaniel Mack /* private free callback. 1667f0b5e634SDaniel Mack * free both private_data and private_value 1668f0b5e634SDaniel Mack */ 1669f0b5e634SDaniel Mack static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) 1670f0b5e634SDaniel Mack { 1671f0b5e634SDaniel Mack int i, num_ins = 0; 1672f0b5e634SDaniel Mack 1673f0b5e634SDaniel Mack if (kctl->private_data) { 1674f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval = kctl->private_data; 1675f0b5e634SDaniel Mack num_ins = cval->max; 1676f0b5e634SDaniel Mack kfree(cval); 1677f0b5e634SDaniel Mack kctl->private_data = NULL; 1678f0b5e634SDaniel Mack } 1679f0b5e634SDaniel Mack if (kctl->private_value) { 1680f0b5e634SDaniel Mack char **itemlist = (char **)kctl->private_value; 1681f0b5e634SDaniel Mack for (i = 0; i < num_ins; i++) 1682f0b5e634SDaniel Mack kfree(itemlist[i]); 1683f0b5e634SDaniel Mack kfree(itemlist); 1684f0b5e634SDaniel Mack kctl->private_value = 0; 1685f0b5e634SDaniel Mack } 1686f0b5e634SDaniel Mack } 1687f0b5e634SDaniel Mack 1688f0b5e634SDaniel Mack /* 1689f0b5e634SDaniel Mack * parse a selector unit 1690f0b5e634SDaniel Mack */ 169199fc8645SDaniel Mack static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void *raw_desc) 1692f0b5e634SDaniel Mack { 169399fc8645SDaniel Mack struct uac_selector_unit_descriptor *desc = raw_desc; 1694f0b5e634SDaniel Mack unsigned int i, nameid, len; 1695f0b5e634SDaniel Mack int err; 1696f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1697f0b5e634SDaniel Mack struct snd_kcontrol *kctl; 1698f0b5e634SDaniel Mack const struct usbmix_name_map *map; 1699f0b5e634SDaniel Mack char **namelist; 1700f0b5e634SDaniel Mack 170199fc8645SDaniel Mack if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) { 1702f0b5e634SDaniel Mack snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); 1703f0b5e634SDaniel Mack return -EINVAL; 1704f0b5e634SDaniel Mack } 1705f0b5e634SDaniel Mack 170699fc8645SDaniel Mack for (i = 0; i < desc->bNrInPins; i++) { 170799fc8645SDaniel Mack if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) 1708f0b5e634SDaniel Mack return err; 1709f0b5e634SDaniel Mack } 1710f0b5e634SDaniel Mack 171199fc8645SDaniel Mack if (desc->bNrInPins == 1) /* only one ? nonsense! */ 1712f0b5e634SDaniel Mack return 0; 1713f0b5e634SDaniel Mack 1714f0b5e634SDaniel Mack map = find_map(state, unitid, 0); 1715f0b5e634SDaniel Mack if (check_ignored_ctl(map)) 1716f0b5e634SDaniel Mack return 0; 1717f0b5e634SDaniel Mack 1718f0b5e634SDaniel Mack cval = kzalloc(sizeof(*cval), GFP_KERNEL); 1719f0b5e634SDaniel Mack if (! cval) { 1720f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1721f0b5e634SDaniel Mack return -ENOMEM; 1722f0b5e634SDaniel Mack } 1723f0b5e634SDaniel Mack cval->mixer = state->mixer; 1724f0b5e634SDaniel Mack cval->id = unitid; 1725f0b5e634SDaniel Mack cval->val_type = USB_MIXER_U8; 1726f0b5e634SDaniel Mack cval->channels = 1; 1727f0b5e634SDaniel Mack cval->min = 1; 172899fc8645SDaniel Mack cval->max = desc->bNrInPins; 1729f0b5e634SDaniel Mack cval->res = 1; 1730f0b5e634SDaniel Mack cval->initialized = 1; 1731f0b5e634SDaniel Mack 173299fc8645SDaniel Mack namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); 1733f0b5e634SDaniel Mack if (! namelist) { 1734f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc\n"); 1735f0b5e634SDaniel Mack kfree(cval); 1736f0b5e634SDaniel Mack return -ENOMEM; 1737f0b5e634SDaniel Mack } 1738f0b5e634SDaniel Mack #define MAX_ITEM_NAME_LEN 64 173999fc8645SDaniel Mack for (i = 0; i < desc->bNrInPins; i++) { 1740f0b5e634SDaniel Mack struct usb_audio_term iterm; 1741f0b5e634SDaniel Mack len = 0; 1742f0b5e634SDaniel Mack namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); 1743f0b5e634SDaniel Mack if (! namelist[i]) { 1744f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc\n"); 1745f0b5e634SDaniel Mack while (i--) 1746f0b5e634SDaniel Mack kfree(namelist[i]); 1747f0b5e634SDaniel Mack kfree(namelist); 1748f0b5e634SDaniel Mack kfree(cval); 1749f0b5e634SDaniel Mack return -ENOMEM; 1750f0b5e634SDaniel Mack } 1751f0b5e634SDaniel Mack len = check_mapped_selector_name(state, unitid, i, namelist[i], 1752f0b5e634SDaniel Mack MAX_ITEM_NAME_LEN); 175399fc8645SDaniel Mack if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) 1754f0b5e634SDaniel Mack len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); 1755f0b5e634SDaniel Mack if (! len) 1756f0b5e634SDaniel Mack sprintf(namelist[i], "Input %d", i); 1757f0b5e634SDaniel Mack } 1758f0b5e634SDaniel Mack 1759f0b5e634SDaniel Mack kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); 1760f0b5e634SDaniel Mack if (! kctl) { 1761f0b5e634SDaniel Mack snd_printk(KERN_ERR "cannot malloc kcontrol\n"); 1762f0b5e634SDaniel Mack kfree(namelist); 1763f0b5e634SDaniel Mack kfree(cval); 1764f0b5e634SDaniel Mack return -ENOMEM; 1765f0b5e634SDaniel Mack } 1766f0b5e634SDaniel Mack kctl->private_value = (unsigned long)namelist; 1767f0b5e634SDaniel Mack kctl->private_free = usb_mixer_selector_elem_free; 1768f0b5e634SDaniel Mack 176999fc8645SDaniel Mack nameid = uac_selector_unit_iSelector(desc); 1770f0b5e634SDaniel Mack len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); 1771f0b5e634SDaniel Mack if (len) 1772f0b5e634SDaniel Mack ; 1773f0b5e634SDaniel Mack else if (nameid) 1774f0b5e634SDaniel Mack snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); 1775f0b5e634SDaniel Mack else { 1776f0b5e634SDaniel Mack len = get_term_name(state, &state->oterm, 1777f0b5e634SDaniel Mack kctl->id.name, sizeof(kctl->id.name), 0); 1778f0b5e634SDaniel Mack if (! len) 1779f0b5e634SDaniel Mack strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); 1780f0b5e634SDaniel Mack 1781f0b5e634SDaniel Mack if ((state->oterm.type & 0xff00) == 0x0100) 1782f0b5e634SDaniel Mack append_ctl_name(kctl, " Capture Source"); 1783f0b5e634SDaniel Mack else 1784f0b5e634SDaniel Mack append_ctl_name(kctl, " Playback Source"); 1785f0b5e634SDaniel Mack } 1786f0b5e634SDaniel Mack 1787f0b5e634SDaniel Mack snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", 178899fc8645SDaniel Mack cval->id, kctl->id.name, desc->bNrInPins); 1789f0b5e634SDaniel Mack if ((err = add_control_to_empty(state, kctl)) < 0) 1790f0b5e634SDaniel Mack return err; 1791f0b5e634SDaniel Mack 1792f0b5e634SDaniel Mack return 0; 1793f0b5e634SDaniel Mack } 1794f0b5e634SDaniel Mack 1795f0b5e634SDaniel Mack 1796f0b5e634SDaniel Mack /* 1797f0b5e634SDaniel Mack * parse an audio unit recursively 1798f0b5e634SDaniel Mack */ 1799f0b5e634SDaniel Mack 1800f0b5e634SDaniel Mack static int parse_audio_unit(struct mixer_build *state, int unitid) 1801f0b5e634SDaniel Mack { 1802f0b5e634SDaniel Mack unsigned char *p1; 1803f0b5e634SDaniel Mack 1804f0b5e634SDaniel Mack if (test_and_set_bit(unitid, state->unitbitmap)) 1805f0b5e634SDaniel Mack return 0; /* the unit already visited */ 1806f0b5e634SDaniel Mack 1807f0b5e634SDaniel Mack p1 = find_audio_control_unit(state, unitid); 1808f0b5e634SDaniel Mack if (!p1) { 1809f0b5e634SDaniel Mack snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); 1810f0b5e634SDaniel Mack return -EINVAL; 1811f0b5e634SDaniel Mack } 1812f0b5e634SDaniel Mack 1813f0b5e634SDaniel Mack switch (p1[2]) { 1814f0b5e634SDaniel Mack case UAC_INPUT_TERMINAL: 1815f0b5e634SDaniel Mack return 0; /* NOP */ 1816f0b5e634SDaniel Mack case UAC_MIXER_UNIT: 1817f0b5e634SDaniel Mack return parse_audio_mixer_unit(state, unitid, p1); 1818f0b5e634SDaniel Mack case UAC_SELECTOR_UNIT: 1819f0b5e634SDaniel Mack return parse_audio_selector_unit(state, unitid, p1); 1820f0b5e634SDaniel Mack case UAC_FEATURE_UNIT: 1821f0b5e634SDaniel Mack return parse_audio_feature_unit(state, unitid, p1); 1822f0b5e634SDaniel Mack case UAC_PROCESSING_UNIT_V1: 182323caaf19SDaniel Mack /* UAC2_EFFECT_UNIT has the same value */ 182423caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) 1825f0b5e634SDaniel Mack return parse_audio_processing_unit(state, unitid, p1); 182623caaf19SDaniel Mack else 182723caaf19SDaniel Mack return 0; /* FIXME - effect units not implemented yet */ 1828f0b5e634SDaniel Mack case UAC_EXTENSION_UNIT_V1: 182923caaf19SDaniel Mack /* UAC2_PROCESSING_UNIT_V2 has the same value */ 183023caaf19SDaniel Mack if (state->mixer->protocol == UAC_VERSION_1) 1831f0b5e634SDaniel Mack return parse_audio_extension_unit(state, unitid, p1); 183223caaf19SDaniel Mack else /* UAC_VERSION_2 */ 183323caaf19SDaniel Mack return parse_audio_processing_unit(state, unitid, p1); 1834f0b5e634SDaniel Mack default: 1835f0b5e634SDaniel Mack snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); 1836f0b5e634SDaniel Mack return -EINVAL; 1837f0b5e634SDaniel Mack } 1838f0b5e634SDaniel Mack } 1839f0b5e634SDaniel Mack 1840f0b5e634SDaniel Mack static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) 1841f0b5e634SDaniel Mack { 1842f0b5e634SDaniel Mack kfree(mixer->id_elems); 1843f0b5e634SDaniel Mack if (mixer->urb) { 1844f0b5e634SDaniel Mack kfree(mixer->urb->transfer_buffer); 1845f0b5e634SDaniel Mack usb_free_urb(mixer->urb); 1846f0b5e634SDaniel Mack } 1847f0b5e634SDaniel Mack usb_free_urb(mixer->rc_urb); 1848f0b5e634SDaniel Mack kfree(mixer->rc_setup_packet); 1849f0b5e634SDaniel Mack kfree(mixer); 1850f0b5e634SDaniel Mack } 1851f0b5e634SDaniel Mack 1852f0b5e634SDaniel Mack static int snd_usb_mixer_dev_free(struct snd_device *device) 1853f0b5e634SDaniel Mack { 1854f0b5e634SDaniel Mack struct usb_mixer_interface *mixer = device->device_data; 1855f0b5e634SDaniel Mack snd_usb_mixer_free(mixer); 1856f0b5e634SDaniel Mack return 0; 1857f0b5e634SDaniel Mack } 1858f0b5e634SDaniel Mack 1859f0b5e634SDaniel Mack /* 1860f0b5e634SDaniel Mack * create mixer controls 1861f0b5e634SDaniel Mack * 1862f0b5e634SDaniel Mack * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers 1863f0b5e634SDaniel Mack */ 1864f0b5e634SDaniel Mack static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) 1865f0b5e634SDaniel Mack { 1866f0b5e634SDaniel Mack struct mixer_build state; 1867f0b5e634SDaniel Mack int err; 1868f0b5e634SDaniel Mack const struct usbmix_ctl_map *map; 1869f0b5e634SDaniel Mack struct usb_host_interface *hostif; 187023caaf19SDaniel Mack void *p; 1871f0b5e634SDaniel Mack 1872f0b5e634SDaniel Mack hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; 1873f0b5e634SDaniel Mack memset(&state, 0, sizeof(state)); 1874f0b5e634SDaniel Mack state.chip = mixer->chip; 1875f0b5e634SDaniel Mack state.mixer = mixer; 1876f0b5e634SDaniel Mack state.buffer = hostif->extra; 1877f0b5e634SDaniel Mack state.buflen = hostif->extralen; 1878f0b5e634SDaniel Mack 1879f0b5e634SDaniel Mack /* check the mapping table */ 1880f0b5e634SDaniel Mack for (map = usbmix_ctl_maps; map->id; map++) { 1881f0b5e634SDaniel Mack if (map->id == state.chip->usb_id) { 1882f0b5e634SDaniel Mack state.map = map->map; 1883f0b5e634SDaniel Mack state.selector_map = map->selector_map; 1884f0b5e634SDaniel Mack mixer->ignore_ctl_error = map->ignore_ctl_error; 1885f0b5e634SDaniel Mack break; 1886f0b5e634SDaniel Mack } 1887f0b5e634SDaniel Mack } 1888f0b5e634SDaniel Mack 188923caaf19SDaniel Mack p = NULL; 189023caaf19SDaniel Mack while ((p = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, p, UAC_OUTPUT_TERMINAL)) != NULL) { 189123caaf19SDaniel Mack if (mixer->protocol == UAC_VERSION_1) { 189223caaf19SDaniel Mack struct uac_output_terminal_descriptor_v1 *desc = p; 189323caaf19SDaniel Mack 189423caaf19SDaniel Mack if (desc->bLength < sizeof(*desc)) 189523caaf19SDaniel Mack continue; /* invalid descriptor? */ 189623caaf19SDaniel Mack set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ 189723caaf19SDaniel Mack state.oterm.id = desc->bTerminalID; 189823caaf19SDaniel Mack state.oterm.type = le16_to_cpu(desc->wTerminalType); 189923caaf19SDaniel Mack state.oterm.name = desc->iTerminal; 190023caaf19SDaniel Mack err = parse_audio_unit(&state, desc->bSourceID); 190123caaf19SDaniel Mack if (err < 0) 190223caaf19SDaniel Mack return err; 190323caaf19SDaniel Mack } else { /* UAC_VERSION_2 */ 190423caaf19SDaniel Mack struct uac2_output_terminal_descriptor *desc = p; 190523caaf19SDaniel Mack 190623caaf19SDaniel Mack if (desc->bLength < sizeof(*desc)) 1907f0b5e634SDaniel Mack continue; /* invalid descriptor? */ 1908f0b5e634SDaniel Mack set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ 1909f0b5e634SDaniel Mack state.oterm.id = desc->bTerminalID; 1910f0b5e634SDaniel Mack state.oterm.type = le16_to_cpu(desc->wTerminalType); 1911f0b5e634SDaniel Mack state.oterm.name = desc->iTerminal; 1912f0b5e634SDaniel Mack err = parse_audio_unit(&state, desc->bSourceID); 1913f0b5e634SDaniel Mack if (err < 0) 1914f0b5e634SDaniel Mack return err; 1915f0b5e634SDaniel Mack } 191623caaf19SDaniel Mack } 191723caaf19SDaniel Mack 1918f0b5e634SDaniel Mack return 0; 1919f0b5e634SDaniel Mack } 1920f0b5e634SDaniel Mack 1921f0b5e634SDaniel Mack void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) 1922f0b5e634SDaniel Mack { 1923f0b5e634SDaniel Mack struct usb_mixer_elem_info *info; 1924f0b5e634SDaniel Mack 1925f0b5e634SDaniel Mack for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) 1926f0b5e634SDaniel Mack snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 1927f0b5e634SDaniel Mack info->elem_id); 1928f0b5e634SDaniel Mack } 1929f0b5e634SDaniel Mack 1930f0b5e634SDaniel Mack static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, 1931f0b5e634SDaniel Mack int unitid, 1932f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval) 1933f0b5e634SDaniel Mack { 1934f0b5e634SDaniel Mack static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN", 1935f0b5e634SDaniel Mack "S8", "U8", "S16", "U16"}; 1936f0b5e634SDaniel Mack snd_iprintf(buffer, " Unit: %i\n", unitid); 1937f0b5e634SDaniel Mack if (cval->elem_id) 1938f0b5e634SDaniel Mack snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n", 1939f0b5e634SDaniel Mack cval->elem_id->name, cval->elem_id->index); 1940f0b5e634SDaniel Mack snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " 1941f0b5e634SDaniel Mack "channels=%i, type=\"%s\"\n", cval->id, 1942f0b5e634SDaniel Mack cval->control, cval->cmask, cval->channels, 1943f0b5e634SDaniel Mack val_types[cval->val_type]); 1944f0b5e634SDaniel Mack snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", 1945f0b5e634SDaniel Mack cval->min, cval->max, cval->dBmin, cval->dBmax); 1946f0b5e634SDaniel Mack } 1947f0b5e634SDaniel Mack 1948f0b5e634SDaniel Mack static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, 1949f0b5e634SDaniel Mack struct snd_info_buffer *buffer) 1950f0b5e634SDaniel Mack { 1951f0b5e634SDaniel Mack struct snd_usb_audio *chip = entry->private_data; 1952f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 1953f0b5e634SDaniel Mack struct usb_mixer_elem_info *cval; 1954f0b5e634SDaniel Mack int unitid; 1955f0b5e634SDaniel Mack 1956f0b5e634SDaniel Mack list_for_each_entry(mixer, &chip->mixer_list, list) { 1957f0b5e634SDaniel Mack snd_iprintf(buffer, 1958f0b5e634SDaniel Mack "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", 1959f0b5e634SDaniel Mack chip->usb_id, mixer->ctrlif, 1960f0b5e634SDaniel Mack mixer->ignore_ctl_error); 1961f0b5e634SDaniel Mack snd_iprintf(buffer, "Card: %s\n", chip->card->longname); 1962f0b5e634SDaniel Mack for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { 1963f0b5e634SDaniel Mack for (cval = mixer->id_elems[unitid]; cval; 1964f0b5e634SDaniel Mack cval = cval->next_id_elem) 1965f0b5e634SDaniel Mack snd_usb_mixer_dump_cval(buffer, unitid, cval); 1966f0b5e634SDaniel Mack } 1967f0b5e634SDaniel Mack } 1968f0b5e634SDaniel Mack } 1969f0b5e634SDaniel Mack 1970e213e9cfSDaniel Mack static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, 1971e213e9cfSDaniel Mack int attribute, int value, int index) 1972e213e9cfSDaniel Mack { 1973e213e9cfSDaniel Mack struct usb_mixer_elem_info *info; 1974e213e9cfSDaniel Mack __u8 unitid = (index >> 8) & 0xff; 1975e213e9cfSDaniel Mack __u8 control = (value >> 8) & 0xff; 1976e213e9cfSDaniel Mack __u8 channel = value & 0xff; 1977e213e9cfSDaniel Mack 1978e213e9cfSDaniel Mack if (channel >= MAX_CHANNELS) { 1979e213e9cfSDaniel Mack snd_printk(KERN_DEBUG "%s(): bogus channel number %d\n", 1980e213e9cfSDaniel Mack __func__, channel); 1981e213e9cfSDaniel Mack return; 1982e213e9cfSDaniel Mack } 1983e213e9cfSDaniel Mack 1984e213e9cfSDaniel Mack for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) { 1985e213e9cfSDaniel Mack if (info->control != control) 1986e213e9cfSDaniel Mack continue; 1987e213e9cfSDaniel Mack 1988e213e9cfSDaniel Mack switch (attribute) { 1989e213e9cfSDaniel Mack case UAC2_CS_CUR: 1990e213e9cfSDaniel Mack /* invalidate cache, so the value is read from the device */ 1991e213e9cfSDaniel Mack if (channel) 1992e213e9cfSDaniel Mack info->cached &= ~(1 << channel); 1993e213e9cfSDaniel Mack else /* master channel */ 1994e213e9cfSDaniel Mack info->cached = 0; 1995e213e9cfSDaniel Mack 1996e213e9cfSDaniel Mack snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 1997e213e9cfSDaniel Mack info->elem_id); 1998e213e9cfSDaniel Mack break; 1999e213e9cfSDaniel Mack 2000e213e9cfSDaniel Mack case UAC2_CS_RANGE: 2001e213e9cfSDaniel Mack /* TODO */ 2002e213e9cfSDaniel Mack break; 2003e213e9cfSDaniel Mack 2004e213e9cfSDaniel Mack case UAC2_CS_MEM: 2005e213e9cfSDaniel Mack /* TODO */ 2006e213e9cfSDaniel Mack break; 2007e213e9cfSDaniel Mack 2008e213e9cfSDaniel Mack default: 2009e213e9cfSDaniel Mack snd_printk(KERN_DEBUG "unknown attribute %d in interrupt\n", 2010e213e9cfSDaniel Mack attribute); 2011e213e9cfSDaniel Mack break; 2012e213e9cfSDaniel Mack } /* switch */ 2013e213e9cfSDaniel Mack } 2014e213e9cfSDaniel Mack } 2015e213e9cfSDaniel Mack 2016e213e9cfSDaniel Mack static void snd_usb_mixer_interrupt(struct urb *urb) 2017f0b5e634SDaniel Mack { 2018f0b5e634SDaniel Mack struct usb_mixer_interface *mixer = urb->context; 2019e213e9cfSDaniel Mack int len = urb->actual_length; 2020f0b5e634SDaniel Mack 2021e213e9cfSDaniel Mack if (urb->status != 0) 2022e213e9cfSDaniel Mack goto requeue; 2023f0b5e634SDaniel Mack 2024e213e9cfSDaniel Mack if (mixer->protocol == UAC_VERSION_1) { 2025e213e9cfSDaniel Mack struct uac1_status_word *status; 2026e213e9cfSDaniel Mack 2027e213e9cfSDaniel Mack for (status = urb->transfer_buffer; 2028e213e9cfSDaniel Mack len >= sizeof(*status); 2029e213e9cfSDaniel Mack len -= sizeof(*status), status++) { 2030f0b5e634SDaniel Mack snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", 2031e213e9cfSDaniel Mack status->bStatusType, 2032e213e9cfSDaniel Mack status->bOriginator); 2033e213e9cfSDaniel Mack 2034f0b5e634SDaniel Mack /* ignore any notifications not from the control interface */ 2035e213e9cfSDaniel Mack if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != 2036e213e9cfSDaniel Mack UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) 2037f0b5e634SDaniel Mack continue; 2038e213e9cfSDaniel Mack 2039e213e9cfSDaniel Mack if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) 2040e213e9cfSDaniel Mack snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); 2041f0b5e634SDaniel Mack else 2042e213e9cfSDaniel Mack snd_usb_mixer_notify_id(mixer, status->bOriginator); 2043e213e9cfSDaniel Mack } 2044e213e9cfSDaniel Mack } else { /* UAC_VERSION_2 */ 2045e213e9cfSDaniel Mack struct uac2_interrupt_data_msg *msg; 2046e213e9cfSDaniel Mack 2047e213e9cfSDaniel Mack for (msg = urb->transfer_buffer; 2048e213e9cfSDaniel Mack len >= sizeof(*msg); 2049e213e9cfSDaniel Mack len -= sizeof(*msg), msg++) { 2050e213e9cfSDaniel Mack /* drop vendor specific and endpoint requests */ 2051e213e9cfSDaniel Mack if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || 2052e213e9cfSDaniel Mack (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) 2053e213e9cfSDaniel Mack continue; 2054e213e9cfSDaniel Mack 2055e213e9cfSDaniel Mack snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, 2056e213e9cfSDaniel Mack le16_to_cpu(msg->wValue), 2057e213e9cfSDaniel Mack le16_to_cpu(msg->wIndex)); 2058f0b5e634SDaniel Mack } 2059f0b5e634SDaniel Mack } 2060e213e9cfSDaniel Mack 2061e213e9cfSDaniel Mack requeue: 2062f0b5e634SDaniel Mack if (urb->status != -ENOENT && urb->status != -ECONNRESET) { 2063f0b5e634SDaniel Mack urb->dev = mixer->chip->dev; 2064f0b5e634SDaniel Mack usb_submit_urb(urb, GFP_ATOMIC); 2065f0b5e634SDaniel Mack } 2066f0b5e634SDaniel Mack } 2067f0b5e634SDaniel Mack 2068f0b5e634SDaniel Mack /* create the handler for the optional status interrupt endpoint */ 2069f0b5e634SDaniel Mack static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) 2070f0b5e634SDaniel Mack { 2071f0b5e634SDaniel Mack struct usb_host_interface *hostif; 2072f0b5e634SDaniel Mack struct usb_endpoint_descriptor *ep; 2073f0b5e634SDaniel Mack void *transfer_buffer; 2074f0b5e634SDaniel Mack int buffer_length; 2075f0b5e634SDaniel Mack unsigned int epnum; 2076f0b5e634SDaniel Mack 2077f0b5e634SDaniel Mack hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; 2078f0b5e634SDaniel Mack /* we need one interrupt input endpoint */ 2079f0b5e634SDaniel Mack if (get_iface_desc(hostif)->bNumEndpoints < 1) 2080f0b5e634SDaniel Mack return 0; 2081f0b5e634SDaniel Mack ep = get_endpoint(hostif, 0); 2082f0b5e634SDaniel Mack if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) 2083f0b5e634SDaniel Mack return 0; 2084f0b5e634SDaniel Mack 2085f0b5e634SDaniel Mack epnum = usb_endpoint_num(ep); 2086f0b5e634SDaniel Mack buffer_length = le16_to_cpu(ep->wMaxPacketSize); 2087f0b5e634SDaniel Mack transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); 2088f0b5e634SDaniel Mack if (!transfer_buffer) 2089f0b5e634SDaniel Mack return -ENOMEM; 2090f0b5e634SDaniel Mack mixer->urb = usb_alloc_urb(0, GFP_KERNEL); 2091f0b5e634SDaniel Mack if (!mixer->urb) { 2092f0b5e634SDaniel Mack kfree(transfer_buffer); 2093f0b5e634SDaniel Mack return -ENOMEM; 2094f0b5e634SDaniel Mack } 2095f0b5e634SDaniel Mack usb_fill_int_urb(mixer->urb, mixer->chip->dev, 2096f0b5e634SDaniel Mack usb_rcvintpipe(mixer->chip->dev, epnum), 2097f0b5e634SDaniel Mack transfer_buffer, buffer_length, 2098e213e9cfSDaniel Mack snd_usb_mixer_interrupt, mixer, ep->bInterval); 2099f0b5e634SDaniel Mack usb_submit_urb(mixer->urb, GFP_KERNEL); 2100f0b5e634SDaniel Mack return 0; 2101f0b5e634SDaniel Mack } 2102f0b5e634SDaniel Mack 2103f0b5e634SDaniel Mack int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 2104f0b5e634SDaniel Mack int ignore_error) 2105f0b5e634SDaniel Mack { 2106f0b5e634SDaniel Mack static struct snd_device_ops dev_ops = { 2107f0b5e634SDaniel Mack .dev_free = snd_usb_mixer_dev_free 2108f0b5e634SDaniel Mack }; 2109f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 2110f0b5e634SDaniel Mack struct snd_info_entry *entry; 2111f0b5e634SDaniel Mack struct usb_host_interface *host_iface; 211223caaf19SDaniel Mack int err; 2113f0b5e634SDaniel Mack 2114f0b5e634SDaniel Mack strcpy(chip->card->mixername, "USB Mixer"); 2115f0b5e634SDaniel Mack 2116f0b5e634SDaniel Mack mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); 2117f0b5e634SDaniel Mack if (!mixer) 2118f0b5e634SDaniel Mack return -ENOMEM; 2119f0b5e634SDaniel Mack mixer->chip = chip; 2120f0b5e634SDaniel Mack mixer->ctrlif = ctrlif; 2121f0b5e634SDaniel Mack mixer->ignore_ctl_error = ignore_error; 2122f0b5e634SDaniel Mack mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), 2123f0b5e634SDaniel Mack GFP_KERNEL); 2124f0b5e634SDaniel Mack if (!mixer->id_elems) { 2125f0b5e634SDaniel Mack kfree(mixer); 2126f0b5e634SDaniel Mack return -ENOMEM; 2127f0b5e634SDaniel Mack } 2128f0b5e634SDaniel Mack 2129f0b5e634SDaniel Mack host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; 213023caaf19SDaniel Mack mixer->protocol = host_iface->desc.bInterfaceProtocol; 2131f0b5e634SDaniel Mack 2132f0b5e634SDaniel Mack if ((err = snd_usb_mixer_controls(mixer)) < 0 || 2133f0b5e634SDaniel Mack (err = snd_usb_mixer_status_create(mixer)) < 0) 2134f0b5e634SDaniel Mack goto _error; 2135f0b5e634SDaniel Mack 2136f0b5e634SDaniel Mack snd_usb_mixer_apply_create_quirk(mixer); 2137f0b5e634SDaniel Mack 2138f0b5e634SDaniel Mack err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); 2139f0b5e634SDaniel Mack if (err < 0) 2140f0b5e634SDaniel Mack goto _error; 2141f0b5e634SDaniel Mack 2142f0b5e634SDaniel Mack if (list_empty(&chip->mixer_list) && 2143f0b5e634SDaniel Mack !snd_card_proc_new(chip->card, "usbmixer", &entry)) 2144f0b5e634SDaniel Mack snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read); 2145f0b5e634SDaniel Mack 2146f0b5e634SDaniel Mack list_add(&mixer->list, &chip->mixer_list); 2147f0b5e634SDaniel Mack return 0; 2148f0b5e634SDaniel Mack 2149f0b5e634SDaniel Mack _error: 2150f0b5e634SDaniel Mack snd_usb_mixer_free(mixer); 2151f0b5e634SDaniel Mack return err; 2152f0b5e634SDaniel Mack } 2153f0b5e634SDaniel Mack 2154f0b5e634SDaniel Mack void snd_usb_mixer_disconnect(struct list_head *p) 2155f0b5e634SDaniel Mack { 2156f0b5e634SDaniel Mack struct usb_mixer_interface *mixer; 2157f0b5e634SDaniel Mack 2158f0b5e634SDaniel Mack mixer = list_entry(p, struct usb_mixer_interface, list); 2159f0b5e634SDaniel Mack usb_kill_urb(mixer->urb); 2160f0b5e634SDaniel Mack usb_kill_urb(mixer->rc_urb); 2161f0b5e634SDaniel Mack } 2162