+++ /dev/null
-/*
- * (Tentative) USB Audio Driver for ALSA
- *
- * Mixer control part
- *
- * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
- *
- * Many codes borrowed from audio.c by
- * Alan Cox (alan@lxorguk.ukuu.org.uk)
- * Thomas Sailer (sailer@ife.ee.ethz.ch)
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <linux/bitops.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/usb.h>
-#include <linux/usb/audio.h>
-
-#include <sound/core.h>
-#include <sound/control.h>
-#include <sound/hwdep.h>
-#include <sound/info.h>
-#include <sound/tlv.h>
-
-#include "usbaudio.h"
-#include "usbmixer.h"
-#include "helper.h"
-#include "mixer_quirks.h"
-
-#define MAX_ID_ELEMS 256
-
-struct usb_audio_term {
- int id;
- int type;
- int channels;
- unsigned int chconfig;
- int name;
-};
-
-struct usbmix_name_map;
-
-struct mixer_build {
- struct snd_usb_audio *chip;
- struct usb_mixer_interface *mixer;
- unsigned char *buffer;
- unsigned int buflen;
- DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
- struct usb_audio_term oterm;
- const struct usbmix_name_map *map;
- const struct usbmix_selector_map *selector_map;
-};
-
-enum {
- USB_MIXER_BOOLEAN,
- USB_MIXER_INV_BOOLEAN,
- USB_MIXER_S8,
- USB_MIXER_U8,
- USB_MIXER_S16,
- USB_MIXER_U16,
-};
-
-enum {
- USB_PROC_UPDOWN = 1,
- USB_PROC_UPDOWN_SWITCH = 1,
- USB_PROC_UPDOWN_MODE_SEL = 2,
-
- USB_PROC_PROLOGIC = 2,
- USB_PROC_PROLOGIC_SWITCH = 1,
- USB_PROC_PROLOGIC_MODE_SEL = 2,
-
- USB_PROC_3DENH = 3,
- USB_PROC_3DENH_SWITCH = 1,
- USB_PROC_3DENH_SPACE = 2,
-
- USB_PROC_REVERB = 4,
- USB_PROC_REVERB_SWITCH = 1,
- USB_PROC_REVERB_LEVEL = 2,
- USB_PROC_REVERB_TIME = 3,
- USB_PROC_REVERB_DELAY = 4,
-
- USB_PROC_CHORUS = 5,
- USB_PROC_CHORUS_SWITCH = 1,
- USB_PROC_CHORUS_LEVEL = 2,
- USB_PROC_CHORUS_RATE = 3,
- USB_PROC_CHORUS_DEPTH = 4,
-
- USB_PROC_DCR = 6,
- USB_PROC_DCR_SWITCH = 1,
- USB_PROC_DCR_RATIO = 2,
- USB_PROC_DCR_MAX_AMP = 3,
- USB_PROC_DCR_THRESHOLD = 4,
- USB_PROC_DCR_ATTACK = 5,
- USB_PROC_DCR_RELEASE = 6,
-};
-
-/*E-mu 0202(0404) eXtension Unit(XU) control*/
-enum {
- USB_XU_CLOCK_RATE = 0xe301,
- USB_XU_CLOCK_SOURCE = 0xe302,
- USB_XU_DIGITAL_IO_STATUS = 0xe303,
- USB_XU_DEVICE_OPTIONS = 0xe304,
- USB_XU_DIRECT_MONITORING = 0xe305,
- USB_XU_METERING = 0xe306
-};
-enum {
- USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/
- USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */
- USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */
- USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */
-};
-
-/*
- * manual mapping of mixer names
- * if the mixer topology is too complicated and the parsed names are
- * ambiguous, add the entries in usbmixer_maps.c.
- */
-#include "usbmixer_maps.c"
-
-static const struct usbmix_name_map *
-find_map(struct mixer_build *state, int unitid, int control)
-{
- const struct usbmix_name_map *p = state->map;
-
- if (!p)
- return NULL;
-
- for (p = state->map; p->id; p++) {
- if (p->id == unitid &&
- (!control || !p->control || control == p->control))
- return p;
- }
- return NULL;
-}
-
-/* get the mapped name if the unit matches */
-static int
-check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen)
-{
- if (!p || !p->name)
- return 0;
-
- buflen--;
- return strlcpy(buf, p->name, buflen);
-}
-
-/* check whether the control should be ignored */
-static inline int
-check_ignored_ctl(const struct usbmix_name_map *p)
-{
- if (!p || p->name || p->dB)
- return 0;
- return 1;
-}
-
-/* dB mapping */
-static inline void check_mapped_dB(const struct usbmix_name_map *p,
- struct usb_mixer_elem_info *cval)
-{
- if (p && p->dB) {
- cval->dBmin = p->dB->min;
- cval->dBmax = p->dB->max;
- }
-}
-
-/* get the mapped selector source name */
-static int check_mapped_selector_name(struct mixer_build *state, int unitid,
- int index, char *buf, int buflen)
-{
- const struct usbmix_selector_map *p;
-
- if (! state->selector_map)
- return 0;
- for (p = state->selector_map; p->id; p++) {
- if (p->id == unitid && index < p->count)
- return strlcpy(buf, p->names[index], buflen);
- }
- return 0;
-}
-
-/*
- * find an audio control unit with the given unit id
- */
-static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
-{
- unsigned char *p;
-
- p = NULL;
- while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
- USB_DT_CS_INTERFACE)) != NULL) {
- if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC_EXTENSION_UNIT_V1 && p[3] == unit)
- return p;
- }
- return NULL;
-}
-
-
-/*
- * copy a string with the given id
- */
-static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
-{
- int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
- buf[len] = 0;
- return len;
-}
-
-/*
- * convert from the byte/word on usb descriptor to the zero-based integer
- */
-static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
-{
- switch (cval->val_type) {
- case USB_MIXER_BOOLEAN:
- return !!val;
- case USB_MIXER_INV_BOOLEAN:
- return !val;
- case USB_MIXER_U8:
- val &= 0xff;
- break;
- case USB_MIXER_S8:
- val &= 0xff;
- if (val >= 0x80)
- val -= 0x100;
- break;
- case USB_MIXER_U16:
- val &= 0xffff;
- break;
- case USB_MIXER_S16:
- val &= 0xffff;
- if (val >= 0x8000)
- val -= 0x10000;
- break;
- }
- return val;
-}
-
-/*
- * convert from the zero-based int to the byte/word for usb descriptor
- */
-static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
-{
- switch (cval->val_type) {
- case USB_MIXER_BOOLEAN:
- return !!val;
- case USB_MIXER_INV_BOOLEAN:
- return !val;
- case USB_MIXER_S8:
- case USB_MIXER_U8:
- return val & 0xff;
- case USB_MIXER_S16:
- case USB_MIXER_U16:
- return val & 0xffff;
- }
- return 0; /* not reached */
-}
-
-static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
-{
- if (! cval->res)
- cval->res = 1;
- if (val < cval->min)
- return 0;
- else if (val >= cval->max)
- return (cval->max - cval->min + cval->res - 1) / cval->res;
- else
- return (val - cval->min) / cval->res;
-}
-
-static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
-{
- if (val < 0)
- return cval->min;
- if (! cval->res)
- cval->res = 1;
- val *= cval->res;
- val += cval->min;
- if (val > cval->max)
- return cval->max;
- return val;
-}
-
-
-/*
- * retrieve a mixer value
- */
-
-static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
-{
- unsigned char buf[2];
- int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
- int timeout = 10;
-
- while (timeout-- > 0) {
- if (snd_usb_ctl_msg(cval->mixer->chip->dev,
- usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
- request,
- USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
- validx, cval->mixer->ctrlif | (cval->id << 8),
- buf, val_len, 100) >= val_len) {
- *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
- return 0;
- }
- }
- snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
- request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
- return -EINVAL;
-}
-
-static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
-{
- return get_ctl_value(cval, UAC_GET_CUR, validx, value);
-}
-
-/* channel = 0: master, 1 = first channel */
-static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
- int channel, int *value)
-{
- return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value);
-}
-
-static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
- int channel, int index, int *value)
-{
- int err;
-
- if (cval->cached & (1 << channel)) {
- *value = cval->cache_val[index];
- return 0;
- }
- err = get_cur_mix_raw(cval, channel, value);
- if (err < 0) {
- if (!cval->mixer->ignore_ctl_error)
- snd_printd(KERN_ERR "cannot get current value for "
- "control %d ch %d: err = %d\n",
- cval->control, channel, err);
- return err;
- }
- cval->cached |= 1 << channel;
- cval->cache_val[index] = *value;
- return 0;
-}
-
-
-/*
- * set a mixer value
- */
-
-int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
- int request, int validx, int value_set)
-{
- unsigned char buf[2];
- int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
- int timeout = 10;
-
- value_set = convert_bytes_value(cval, value_set);
- buf[0] = value_set & 0xff;
- buf[1] = (value_set >> 8) & 0xff;
- while (timeout-- > 0)
- if (snd_usb_ctl_msg(cval->mixer->chip->dev,
- usb_sndctrlpipe(cval->mixer->chip->dev, 0),
- request,
- USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
- validx, cval->mixer->ctrlif | (cval->id << 8),
- buf, val_len, 100) >= 0)
- return 0;
- snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
- request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]);
- return -EINVAL;
-}
-
-static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
-{
- return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
-}
-
-static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
- int index, int value)
-{
- int err;
- err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
- value);
- if (err < 0)
- return err;
- cval->cached |= 1 << channel;
- cval->cache_val[index] = value;
- return 0;
-}
-
-/*
- * TLV callback for mixer volume controls
- */
-static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
- unsigned int size, unsigned int __user *_tlv)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- DECLARE_TLV_DB_MINMAX(scale, 0, 0);
-
- if (size < sizeof(scale))
- return -ENOMEM;
- scale[2] = cval->dBmin;
- scale[3] = cval->dBmax;
- if (copy_to_user(_tlv, scale, sizeof(scale)))
- return -EFAULT;
- return 0;
-}
-
-/*
- * parser routines begin here...
- */
-
-static int parse_audio_unit(struct mixer_build *state, int unitid);
-
-
-/*
- * check if the input/output channel routing is enabled on the given bitmap.
- * used for mixer unit parser
- */
-static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
-{
- int idx = ich * num_outs + och;
- return bmap[idx >> 3] & (0x80 >> (idx & 7));
-}
-
-
-/*
- * add an alsa control element
- * search and increment the index until an empty slot is found.
- *
- * if failed, give up and free the control instance.
- */
-
-static int add_control_to_empty(struct mixer_build *state, struct snd_kcontrol *kctl)
-{
- struct usb_mixer_elem_info *cval = kctl->private_data;
- int err;
-
- while (snd_ctl_find_id(state->chip->card, &kctl->id))
- kctl->id.index++;
- if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) {
- snd_printd(KERN_ERR "cannot add control (err = %d)\n", err);
- return err;
- }
- cval->elem_id = &kctl->id;
- cval->next_id_elem = state->mixer->id_elems[cval->id];
- state->mixer->id_elems[cval->id] = cval;
- return 0;
-}
-
-
-/*
- * get a terminal name string
- */
-
-static struct iterm_name_combo {
- int type;
- char *name;
-} iterm_names[] = {
- { 0x0300, "Output" },
- { 0x0301, "Speaker" },
- { 0x0302, "Headphone" },
- { 0x0303, "HMD Audio" },
- { 0x0304, "Desktop Speaker" },
- { 0x0305, "Room Speaker" },
- { 0x0306, "Com Speaker" },
- { 0x0307, "LFE" },
- { 0x0600, "External In" },
- { 0x0601, "Analog In" },
- { 0x0602, "Digital In" },
- { 0x0603, "Line" },
- { 0x0604, "Legacy In" },
- { 0x0605, "IEC958 In" },
- { 0x0606, "1394 DA Stream" },
- { 0x0607, "1394 DV Stream" },
- { 0x0700, "Embedded" },
- { 0x0701, "Noise Source" },
- { 0x0702, "Equalization Noise" },
- { 0x0703, "CD" },
- { 0x0704, "DAT" },
- { 0x0705, "DCC" },
- { 0x0706, "MiniDisk" },
- { 0x0707, "Analog Tape" },
- { 0x0708, "Phonograph" },
- { 0x0709, "VCR Audio" },
- { 0x070a, "Video Disk Audio" },
- { 0x070b, "DVD Audio" },
- { 0x070c, "TV Tuner Audio" },
- { 0x070d, "Satellite Rec Audio" },
- { 0x070e, "Cable Tuner Audio" },
- { 0x070f, "DSS Audio" },
- { 0x0710, "Radio Receiver" },
- { 0x0711, "Radio Transmitter" },
- { 0x0712, "Multi-Track Recorder" },
- { 0x0713, "Synthesizer" },
- { 0 },
-};
-
-static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm,
- unsigned char *name, int maxlen, int term_only)
-{
- struct iterm_name_combo *names;
-
- if (iterm->name)
- return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
-
- /* virtual type - not a real terminal */
- if (iterm->type >> 16) {
- if (term_only)
- return 0;
- switch (iterm->type >> 16) {
- case UAC_SELECTOR_UNIT:
- strcpy(name, "Selector"); return 8;
- case UAC_PROCESSING_UNIT_V1:
- strcpy(name, "Process Unit"); return 12;
- case UAC_EXTENSION_UNIT_V1:
- strcpy(name, "Ext Unit"); return 8;
- case UAC_MIXER_UNIT:
- strcpy(name, "Mixer"); return 5;
- default:
- return sprintf(name, "Unit %d", iterm->id);
- }
- }
-
- switch (iterm->type & 0xff00) {
- case 0x0100:
- strcpy(name, "PCM"); return 3;
- case 0x0200:
- strcpy(name, "Mic"); return 3;
- case 0x0400:
- strcpy(name, "Headset"); return 7;
- case 0x0500:
- strcpy(name, "Phone"); return 5;
- }
-
- for (names = iterm_names; names->type; names++)
- if (names->type == iterm->type) {
- strcpy(name, names->name);
- return strlen(names->name);
- }
- return 0;
-}
-
-
-/*
- * parse the source unit recursively until it reaches to a terminal
- * or a branched unit.
- */
-static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
-{
- unsigned char *p1;
-
- memset(term, 0, sizeof(*term));
- while ((p1 = find_audio_control_unit(state, id)) != NULL) {
- term->id = id;
- switch (p1[2]) {
- case UAC_INPUT_TERMINAL:
- term->type = combine_word(p1 + 4);
- term->channels = p1[7];
- term->chconfig = combine_word(p1 + 8);
- term->name = p1[11];
- return 0;
- case UAC_FEATURE_UNIT:
- id = p1[4];
- break; /* continue to parse */
- case UAC_MIXER_UNIT:
- term->type = p1[2] << 16; /* virtual type */
- term->channels = p1[5 + p1[4]];
- term->chconfig = combine_word(p1 + 6 + p1[4]);
- term->name = p1[p1[0] - 1];
- return 0;
- case UAC_SELECTOR_UNIT:
- /* call recursively to retrieve the channel info */
- if (check_input_term(state, p1[5], term) < 0)
- return -ENODEV;
- term->type = p1[2] << 16; /* virtual type */
- term->id = id;
- term->name = p1[9 + p1[0] - 1];
- return 0;
- case UAC_PROCESSING_UNIT_V1:
- case UAC_EXTENSION_UNIT_V1:
- if (p1[6] == 1) {
- id = p1[7];
- break; /* continue to parse */
- }
- term->type = p1[2] << 16; /* virtual type */
- term->channels = p1[7 + p1[6]];
- term->chconfig = combine_word(p1 + 8 + p1[6]);
- term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
- return 0;
- default:
- return -ENODEV;
- }
- }
- return -ENODEV;
-}
-
-
-/*
- * Feature Unit
- */
-
-/* feature unit control information */
-struct usb_feature_control_info {
- const char *name;
- unsigned int type; /* control type (mute, volume, etc.) */
-};
-
-static struct usb_feature_control_info audio_feature_info[] = {
- { "Mute", USB_MIXER_INV_BOOLEAN },
- { "Volume", USB_MIXER_S16 },
- { "Tone Control - Bass", USB_MIXER_S8 },
- { "Tone Control - Mid", USB_MIXER_S8 },
- { "Tone Control - Treble", USB_MIXER_S8 },
- { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */
- { "Auto Gain Control", USB_MIXER_BOOLEAN },
- { "Delay Control", USB_MIXER_U16 },
- { "Bass Boost", USB_MIXER_BOOLEAN },
- { "Loudness", USB_MIXER_BOOLEAN },
-};
-
-
-/* private_free callback */
-static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
-{
- kfree(kctl->private_data);
- kctl->private_data = NULL;
-}
-
-
-/*
- * interface to ALSA control for feature/mixer units
- */
-
-/*
- * retrieve the minimum and maximum values for the specified control
- */
-static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
-{
- /* for failsafe */
- cval->min = default_min;
- cval->max = cval->min + 1;
- cval->res = 1;
- cval->dBmin = cval->dBmax = 0;
-
- if (cval->val_type == USB_MIXER_BOOLEAN ||
- cval->val_type == USB_MIXER_INV_BOOLEAN) {
- cval->initialized = 1;
- } else {
- int minchn = 0;
- if (cval->cmask) {
- int i;
- for (i = 0; i < MAX_CHANNELS; i++)
- if (cval->cmask & (1 << i)) {
- minchn = i + 1;
- break;
- }
- }
- if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
- get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
- snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n",
- cval->id, cval->mixer->ctrlif, cval->control, cval->id);
- return -EINVAL;
- }
- if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
- cval->res = 1;
- } else {
- int last_valid_res = cval->res;
-
- while (cval->res > 1) {
- if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES,
- (cval->control << 8) | minchn, cval->res / 2) < 0)
- break;
- cval->res /= 2;
- }
- if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
- cval->res = last_valid_res;
- }
- if (cval->res == 0)
- cval->res = 1;
-
- /* Additional checks for the proper resolution
- *
- * Some devices report smaller resolutions than actually
- * reacting. They don't return errors but simply clip
- * to the lower aligned value.
- */
- if (cval->min + cval->res < cval->max) {
- int last_valid_res = cval->res;
- int saved, test, check;
- get_cur_mix_raw(cval, minchn, &saved);
- for (;;) {
- test = saved;
- if (test < cval->max)
- test += cval->res;
- else
- test -= cval->res;
- if (test < cval->min || test > cval->max ||
- set_cur_mix_value(cval, minchn, 0, test) ||
- get_cur_mix_raw(cval, minchn, &check)) {
- cval->res = last_valid_res;
- break;
- }
- if (test == check)
- break;
- cval->res *= 2;
- }
- set_cur_mix_value(cval, minchn, 0, saved);
- }
-
- cval->initialized = 1;
- }
-
- /* USB descriptions contain the dB scale in 1/256 dB unit
- * while ALSA TLV contains in 1/100 dB unit
- */
- cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256;
- cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256;
- if (cval->dBmin > cval->dBmax) {
- /* something is wrong; assume it's either from/to 0dB */
- if (cval->dBmin < 0)
- cval->dBmax = 0;
- else if (cval->dBmin > 0)
- cval->dBmin = 0;
- if (cval->dBmin > cval->dBmax) {
- /* totally crap, return an error */
- return -EINVAL;
- }
- }
-
- return 0;
-}
-
-
-/* get a feature/mixer unit info */
-static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
-
- if (cval->val_type == USB_MIXER_BOOLEAN ||
- cval->val_type == USB_MIXER_INV_BOOLEAN)
- uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
- else
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = cval->channels;
- if (cval->val_type == USB_MIXER_BOOLEAN ||
- cval->val_type == USB_MIXER_INV_BOOLEAN) {
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = 1;
- } else {
- if (! cval->initialized)
- get_min_max(cval, 0);
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max =
- (cval->max - cval->min + cval->res - 1) / cval->res;
- }
- return 0;
-}
-
-/* get the current value from feature/mixer unit */
-static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- int c, cnt, val, err;
-
- ucontrol->value.integer.value[0] = cval->min;
- if (cval->cmask) {
- cnt = 0;
- for (c = 0; c < MAX_CHANNELS; c++) {
- if (!(cval->cmask & (1 << c)))
- continue;
- err = get_cur_mix_value(cval, c + 1, cnt, &val);
- if (err < 0)
- return cval->mixer->ignore_ctl_error ? 0 : err;
- val = get_relative_value(cval, val);
- ucontrol->value.integer.value[cnt] = val;
- cnt++;
- }
- return 0;
- } else {
- /* master channel */
- err = get_cur_mix_value(cval, 0, 0, &val);
- if (err < 0)
- return cval->mixer->ignore_ctl_error ? 0 : err;
- val = get_relative_value(cval, val);
- ucontrol->value.integer.value[0] = val;
- }
- return 0;
-}
-
-/* put the current value to feature/mixer unit */
-static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- int c, cnt, val, oval, err;
- int changed = 0;
-
- if (cval->cmask) {
- cnt = 0;
- for (c = 0; c < MAX_CHANNELS; c++) {
- if (!(cval->cmask & (1 << c)))
- continue;
- err = get_cur_mix_value(cval, c + 1, cnt, &oval);
- if (err < 0)
- return cval->mixer->ignore_ctl_error ? 0 : err;
- val = ucontrol->value.integer.value[cnt];
- val = get_abs_value(cval, val);
- if (oval != val) {
- set_cur_mix_value(cval, c + 1, cnt, val);
- changed = 1;
- }
- cnt++;
- }
- } else {
- /* master channel */
- err = get_cur_mix_value(cval, 0, 0, &oval);
- if (err < 0)
- return cval->mixer->ignore_ctl_error ? 0 : err;
- val = ucontrol->value.integer.value[0];
- val = get_abs_value(cval, val);
- if (val != oval) {
- set_cur_mix_value(cval, 0, 0, val);
- changed = 1;
- }
- }
- return changed;
-}
-
-static struct snd_kcontrol_new usb_feature_unit_ctl = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "", /* will be filled later manually */
- .info = mixer_ctl_feature_info,
- .get = mixer_ctl_feature_get,
- .put = mixer_ctl_feature_put,
-};
-
-
-/*
- * build a feature control
- */
-
-static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
-{
- return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
-}
-
-static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
- unsigned int ctl_mask, int control,
- struct usb_audio_term *iterm, int unitid)
-{
- unsigned int len = 0;
- int mapped_name = 0;
- int nameid = desc[desc[0] - 1];
- struct snd_kcontrol *kctl;
- struct usb_mixer_elem_info *cval;
- const struct usbmix_name_map *map;
-
- control++; /* change from zero-based to 1-based value */
-
- if (control == UAC_GRAPHIC_EQUALIZER_CONTROL) {
- /* FIXME: not supported yet */
- return;
- }
-
- map = find_map(state, unitid, control);
- if (check_ignored_ctl(map))
- return;
-
- cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- return;
- }
- cval->mixer = state->mixer;
- cval->id = unitid;
- cval->control = control;
- cval->cmask = ctl_mask;
- cval->val_type = audio_feature_info[control-1].type;
- if (ctl_mask == 0)
- cval->channels = 1; /* master channel */
- else {
- int i, c = 0;
- for (i = 0; i < 16; i++)
- if (ctl_mask & (1 << i))
- c++;
- cval->channels = c;
- }
-
- /* get min/max values */
- get_min_max(cval, 0);
-
- kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
- if (! kctl) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- kfree(cval);
- return;
- }
- kctl->private_free = usb_mixer_elem_free;
-
- len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
- mapped_name = len != 0;
- if (! len && nameid)
- len = snd_usb_copy_string_desc(state, nameid,
- kctl->id.name, sizeof(kctl->id.name));
-
- switch (control) {
- case UAC_MUTE_CONTROL:
- case UAC_VOLUME_CONTROL:
- /* determine the control name. the rule is:
- * - if a name id is given in descriptor, use it.
- * - if the connected input can be determined, then use the name
- * of terminal type.
- * - if the connected output can be determined, use it.
- * - otherwise, anonymous name.
- */
- if (! len) {
- len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
- if (! len)
- len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
- if (! len)
- len = snprintf(kctl->id.name, sizeof(kctl->id.name),
- "Feature %d", unitid);
- }
- /* determine the stream direction:
- * if the connected output is USB stream, then it's likely a
- * capture stream. otherwise it should be playback (hopefully :)
- */
- if (! mapped_name && ! (state->oterm.type >> 16)) {
- if ((state->oterm.type & 0xff00) == 0x0100) {
- len = append_ctl_name(kctl, " Capture");
- } else {
- len = append_ctl_name(kctl, " Playback");
- }
- }
- append_ctl_name(kctl, control == UAC_MUTE_CONTROL ?
- " Switch" : " Volume");
- if (control == UAC_VOLUME_CONTROL) {
- kctl->tlv.c = mixer_vol_tlv;
- kctl->vd[0].access |=
- SNDRV_CTL_ELEM_ACCESS_TLV_READ |
- SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
- check_mapped_dB(map, cval);
- }
- break;
-
- default:
- if (! len)
- strlcpy(kctl->id.name, audio_feature_info[control-1].name,
- sizeof(kctl->id.name));
- break;
- }
-
- /* volume control quirks */
- switch (state->chip->usb_id) {
- case USB_ID(0x0471, 0x0101):
- case USB_ID(0x0471, 0x0104):
- case USB_ID(0x0471, 0x0105):
- case USB_ID(0x0672, 0x1041):
- /* quirk for UDA1321/N101.
- * note that detection between firmware 2.1.1.7 (N101)
- * and later 2.1.1.21 is not very clear from datasheets.
- * I hope that the min value is -15360 for newer firmware --jk
- */
- if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
- cval->min == -15616) {
- snd_printk(KERN_INFO
- "set volume quirk for UDA1321/N101 chip\n");
- cval->max = -256;
- }
- break;
-
- case USB_ID(0x046d, 0x09a4):
- if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
- snd_printk(KERN_INFO
- "set volume quirk for QuickCam E3500\n");
- cval->min = 6080;
- cval->max = 8768;
- cval->res = 192;
- }
- break;
-
- }
-
- snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
- cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
- add_control_to_empty(state, kctl);
-}
-
-
-
-/*
- * parse a feature unit
- *
- * most of controlls are defined here.
- */
-static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr)
-{
- int channels, i, j;
- struct usb_audio_term iterm;
- unsigned int master_bits, first_ch_bits;
- int err, csize;
- struct uac_feature_unit_descriptor *ftr = _ftr;
-
- if (ftr->bLength < 7 || ! (csize = ftr->bControlSize) || ftr->bLength < 7 + csize) {
- snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid);
- return -EINVAL;
- }
-
- /* parse the source unit */
- if ((err = parse_audio_unit(state, ftr->bSourceID)) < 0)
- return err;
-
- /* determine the input source type and name */
- if (check_input_term(state, ftr->bSourceID, &iterm) < 0)
- return -EINVAL;
-
- channels = (ftr->bLength - 7) / csize - 1;
-
- master_bits = snd_usb_combine_bytes(ftr->controls, csize);
- /* master configuration quirks */
- switch (state->chip->usb_id) {
- case USB_ID(0x08bb, 0x2702):
- snd_printk(KERN_INFO
- "usbmixer: master volume quirk for PCM2702 chip\n");
- /* disable non-functional volume control */
- master_bits &= ~UAC_FU_VOLUME;
- break;
- }
- if (channels > 0)
- first_ch_bits = snd_usb_combine_bytes(ftr->controls + csize, csize);
- else
- first_ch_bits = 0;
- /* check all control types */
- for (i = 0; i < 10; i++) {
- unsigned int ch_bits = 0;
- for (j = 0; j < channels; j++) {
- unsigned int mask = snd_usb_combine_bytes(ftr->controls + csize * (j+1), csize);
- if (mask & (1 << i))
- ch_bits |= (1 << j);
- }
- if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
- build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid);
- if (master_bits & (1 << i))
- build_feature_ctl(state, _ftr, 0, i, &iterm, unitid);
- }
-
- return 0;
-}
-
-
-/*
- * Mixer Unit
- */
-
-/*
- * build a mixer unit control
- *
- * the callbacks are identical with feature unit.
- * input channel number (zero based) is given in control field instead.
- */
-
-static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
- int in_pin, int in_ch, int unitid,
- struct usb_audio_term *iterm)
-{
- struct usb_mixer_elem_info *cval;
- unsigned int input_pins = desc[4];
- unsigned int num_outs = desc[5 + input_pins];
- unsigned int i, len;
- struct snd_kcontrol *kctl;
- const struct usbmix_name_map *map;
-
- map = find_map(state, unitid, 0);
- if (check_ignored_ctl(map))
- return;
-
- cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval)
- return;
-
- cval->mixer = state->mixer;
- cval->id = unitid;
- cval->control = in_ch + 1; /* based on 1 */
- cval->val_type = USB_MIXER_S16;
- for (i = 0; i < num_outs; i++) {
- if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) {
- cval->cmask |= (1 << i);
- cval->channels++;
- }
- }
-
- /* get min/max values */
- get_min_max(cval, 0);
-
- kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
- if (! kctl) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- kfree(cval);
- return;
- }
- kctl->private_free = usb_mixer_elem_free;
-
- len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
- if (! len)
- len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
- if (! len)
- len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
- append_ctl_name(kctl, " Volume");
-
- snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n",
- cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
- add_control_to_empty(state, kctl);
-}
-
-
-/*
- * parse a mixer unit
- */
-static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, unsigned char *desc)
-{
- struct usb_audio_term iterm;
- int input_pins, num_ins, num_outs;
- int pin, ich, err;
-
- if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) {
- snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid);
- return -EINVAL;
- }
- /* no bmControls field (e.g. Maya44) -> ignore */
- if (desc[0] <= 10 + input_pins) {
- snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid);
- return 0;
- }
-
- num_ins = 0;
- ich = 0;
- for (pin = 0; pin < input_pins; pin++) {
- err = parse_audio_unit(state, desc[5 + pin]);
- if (err < 0)
- return err;
- err = check_input_term(state, desc[5 + pin], &iterm);
- if (err < 0)
- return err;
- num_ins += iterm.channels;
- for (; ich < num_ins; ++ich) {
- int och, ich_has_controls = 0;
-
- for (och = 0; och < num_outs; ++och) {
- if (check_matrix_bitmap(desc + 9 + input_pins,
- ich, och, num_outs)) {
- ich_has_controls = 1;
- break;
- }
- }
- if (ich_has_controls)
- build_mixer_unit_ctl(state, desc, pin, ich,
- unitid, &iterm);
- }
- }
- return 0;
-}
-
-
-/*
- * Processing Unit / Extension Unit
- */
-
-/* get callback for processing/extension unit */
-static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- int err, val;
-
- err = get_cur_ctl_value(cval, cval->control << 8, &val);
- if (err < 0 && cval->mixer->ignore_ctl_error) {
- ucontrol->value.integer.value[0] = cval->min;
- return 0;
- }
- if (err < 0)
- return err;
- val = get_relative_value(cval, val);
- ucontrol->value.integer.value[0] = val;
- return 0;
-}
-
-/* put callback for processing/extension unit */
-static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- int val, oval, err;
-
- err = get_cur_ctl_value(cval, cval->control << 8, &oval);
- if (err < 0) {
- if (cval->mixer->ignore_ctl_error)
- return 0;
- return err;
- }
- val = ucontrol->value.integer.value[0];
- val = get_abs_value(cval, val);
- if (val != oval) {
- set_cur_ctl_value(cval, cval->control << 8, val);
- return 1;
- }
- return 0;
-}
-
-/* alsa control interface for processing/extension unit */
-static struct snd_kcontrol_new mixer_procunit_ctl = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "", /* will be filled later */
- .info = mixer_ctl_feature_info,
- .get = mixer_ctl_procunit_get,
- .put = mixer_ctl_procunit_put,
-};
-
-
-/*
- * predefined data for processing units
- */
-struct procunit_value_info {
- int control;
- char *suffix;
- int val_type;
- int min_value;
-};
-
-struct procunit_info {
- int type;
- char *name;
- struct procunit_value_info *values;
-};
-
-static struct procunit_value_info updown_proc_info[] = {
- { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN },
- { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
- { 0 }
-};
-static struct procunit_value_info prologic_proc_info[] = {
- { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN },
- { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 },
- { 0 }
-};
-static struct procunit_value_info threed_enh_proc_info[] = {
- { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN },
- { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 },
- { 0 }
-};
-static struct procunit_value_info reverb_proc_info[] = {
- { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN },
- { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
- { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 },
- { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 },
- { 0 }
-};
-static struct procunit_value_info chorus_proc_info[] = {
- { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN },
- { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
- { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
- { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
- { 0 }
-};
-static struct procunit_value_info dcr_proc_info[] = {
- { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN },
- { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 },
- { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 },
- { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
- { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 },
- { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 },
- { 0 }
-};
-
-static struct procunit_info procunits[] = {
- { USB_PROC_UPDOWN, "Up Down", updown_proc_info },
- { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info },
- { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info },
- { USB_PROC_REVERB, "Reverb", reverb_proc_info },
- { USB_PROC_CHORUS, "Chorus", chorus_proc_info },
- { USB_PROC_DCR, "DCR", dcr_proc_info },
- { 0 },
-};
-/*
- * predefined data for extension units
- */
-static struct procunit_value_info clock_rate_xu_info[] = {
- { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
- { 0 }
-};
-static struct procunit_value_info clock_source_xu_info[] = {
- { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
- { 0 }
-};
-static struct procunit_value_info spdif_format_xu_info[] = {
- { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
- { 0 }
-};
-static struct procunit_value_info soft_limit_xu_info[] = {
- { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
- { 0 }
-};
-static struct procunit_info extunits[] = {
- { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
- { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
- { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
- { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
- { 0 }
-};
-/*
- * build a processing/extension unit
- */
-static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name)
-{
- int num_ins = dsc[6];
- struct usb_mixer_elem_info *cval;
- struct snd_kcontrol *kctl;
- int i, err, nameid, type, len;
- struct procunit_info *info;
- struct procunit_value_info *valinfo;
- const struct usbmix_name_map *map;
- static struct procunit_value_info default_value_info[] = {
- { 0x01, "Switch", USB_MIXER_BOOLEAN },
- { 0 }
- };
- static struct procunit_info default_info = {
- 0, NULL, default_value_info
- };
-
- if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) {
- snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
- return -EINVAL;
- }
-
- for (i = 0; i < num_ins; i++) {
- if ((err = parse_audio_unit(state, dsc[7 + i])) < 0)
- return err;
- }
-
- type = combine_word(&dsc[4]);
- for (info = list; info && info->type; info++)
- if (info->type == type)
- break;
- if (! info || ! info->type)
- info = &default_info;
-
- for (valinfo = info->values; valinfo->control; valinfo++) {
- /* FIXME: bitmap might be longer than 8bit */
- if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
- continue;
- map = find_map(state, unitid, valinfo->control);
- if (check_ignored_ctl(map))
- continue;
- cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- return -ENOMEM;
- }
- cval->mixer = state->mixer;
- cval->id = unitid;
- cval->control = valinfo->control;
- cval->val_type = valinfo->val_type;
- cval->channels = 1;
-
- /* get min/max values */
- if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
- /* FIXME: hard-coded */
- cval->min = 1;
- cval->max = dsc[15];
- cval->res = 1;
- cval->initialized = 1;
- } else {
- if (type == USB_XU_CLOCK_RATE) {
- /* E-Mu USB 0404/0202/TrackerPre
- * samplerate control quirk
- */
- cval->min = 0;
- cval->max = 5;
- cval->res = 1;
- cval->initialized = 1;
- } else
- get_min_max(cval, valinfo->min_value);
- }
-
- kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
- if (! kctl) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- kfree(cval);
- return -ENOMEM;
- }
- kctl->private_free = usb_mixer_elem_free;
-
- if (check_mapped_name(map, kctl->id.name,
- sizeof(kctl->id.name)))
- /* nothing */ ;
- else if (info->name)
- strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
- else {
- nameid = dsc[12 + num_ins + dsc[11 + num_ins]];
- len = 0;
- if (nameid)
- len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
- if (! len)
- strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
- }
- append_ctl_name(kctl, " ");
- append_ctl_name(kctl, valinfo->suffix);
-
- snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n",
- cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
- if ((err = add_control_to_empty(state, kctl)) < 0)
- return err;
- }
- return 0;
-}
-
-
-static int parse_audio_processing_unit(struct mixer_build *state, int unitid, unsigned char *desc)
-{
- return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit");
-}
-
-static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
-{
- return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
-}
-
-
-/*
- * Selector Unit
- */
-
-/* info callback for selector unit
- * use an enumerator type for routing
- */
-static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- char **itemlist = (char **)kcontrol->private_value;
-
- if (snd_BUG_ON(!itemlist))
- return -EINVAL;
- uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
- uinfo->count = 1;
- uinfo->value.enumerated.items = cval->max;
- if ((int)uinfo->value.enumerated.item >= cval->max)
- uinfo->value.enumerated.item = cval->max - 1;
- strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]);
- return 0;
-}
-
-/* get callback for selector unit */
-static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- int val, err;
-
- err = get_cur_ctl_value(cval, 0, &val);
- if (err < 0) {
- if (cval->mixer->ignore_ctl_error) {
- ucontrol->value.enumerated.item[0] = 0;
- return 0;
- }
- return err;
- }
- val = get_relative_value(cval, val);
- ucontrol->value.enumerated.item[0] = val;
- return 0;
-}
-
-/* put callback for selector unit */
-static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
- int val, oval, err;
-
- err = get_cur_ctl_value(cval, 0, &oval);
- if (err < 0) {
- if (cval->mixer->ignore_ctl_error)
- return 0;
- return err;
- }
- val = ucontrol->value.enumerated.item[0];
- val = get_abs_value(cval, val);
- if (val != oval) {
- set_cur_ctl_value(cval, 0, val);
- return 1;
- }
- return 0;
-}
-
-/* alsa control interface for selector unit */
-static struct snd_kcontrol_new mixer_selectunit_ctl = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "", /* will be filled later */
- .info = mixer_ctl_selector_info,
- .get = mixer_ctl_selector_get,
- .put = mixer_ctl_selector_put,
-};
-
-
-/* private free callback.
- * free both private_data and private_value
- */
-static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
-{
- int i, num_ins = 0;
-
- if (kctl->private_data) {
- struct usb_mixer_elem_info *cval = kctl->private_data;
- num_ins = cval->max;
- kfree(cval);
- kctl->private_data = NULL;
- }
- if (kctl->private_value) {
- char **itemlist = (char **)kctl->private_value;
- for (i = 0; i < num_ins; i++)
- kfree(itemlist[i]);
- kfree(itemlist);
- kctl->private_value = 0;
- }
-}
-
-/*
- * parse a selector unit
- */
-static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsigned char *desc)
-{
- unsigned int num_ins = desc[4];
- unsigned int i, nameid, len;
- int err;
- struct usb_mixer_elem_info *cval;
- struct snd_kcontrol *kctl;
- const struct usbmix_name_map *map;
- char **namelist;
-
- if (! num_ins || desc[0] < 5 + num_ins) {
- snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid);
- return -EINVAL;
- }
-
- for (i = 0; i < num_ins; i++) {
- if ((err = parse_audio_unit(state, desc[5 + i])) < 0)
- return err;
- }
-
- if (num_ins == 1) /* only one ? nonsense! */
- return 0;
-
- map = find_map(state, unitid, 0);
- if (check_ignored_ctl(map))
- return 0;
-
- cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- return -ENOMEM;
- }
- cval->mixer = state->mixer;
- cval->id = unitid;
- cval->val_type = USB_MIXER_U8;
- cval->channels = 1;
- cval->min = 1;
- cval->max = num_ins;
- cval->res = 1;
- cval->initialized = 1;
-
- namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL);
- if (! namelist) {
- snd_printk(KERN_ERR "cannot malloc\n");
- kfree(cval);
- return -ENOMEM;
- }
-#define MAX_ITEM_NAME_LEN 64
- for (i = 0; i < num_ins; i++) {
- struct usb_audio_term iterm;
- len = 0;
- namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
- if (! namelist[i]) {
- snd_printk(KERN_ERR "cannot malloc\n");
- while (i--)
- kfree(namelist[i]);
- kfree(namelist);
- kfree(cval);
- return -ENOMEM;
- }
- len = check_mapped_selector_name(state, unitid, i, namelist[i],
- MAX_ITEM_NAME_LEN);
- if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0)
- len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
- if (! len)
- sprintf(namelist[i], "Input %d", i);
- }
-
- kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
- if (! kctl) {
- snd_printk(KERN_ERR "cannot malloc kcontrol\n");
- kfree(namelist);
- kfree(cval);
- return -ENOMEM;
- }
- kctl->private_value = (unsigned long)namelist;
- kctl->private_free = usb_mixer_selector_elem_free;
-
- nameid = desc[desc[0] - 1];
- len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
- if (len)
- ;
- else if (nameid)
- snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
- else {
- len = get_term_name(state, &state->oterm,
- kctl->id.name, sizeof(kctl->id.name), 0);
- if (! len)
- strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
-
- if ((state->oterm.type & 0xff00) == 0x0100)
- append_ctl_name(kctl, " Capture Source");
- else
- append_ctl_name(kctl, " Playback Source");
- }
-
- snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
- cval->id, kctl->id.name, num_ins);
- if ((err = add_control_to_empty(state, kctl)) < 0)
- return err;
-
- return 0;
-}
-
-
-/*
- * parse an audio unit recursively
- */
-
-static int parse_audio_unit(struct mixer_build *state, int unitid)
-{
- unsigned char *p1;
-
- if (test_and_set_bit(unitid, state->unitbitmap))
- return 0; /* the unit already visited */
-
- p1 = find_audio_control_unit(state, unitid);
- if (!p1) {
- snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid);
- return -EINVAL;
- }
-
- switch (p1[2]) {
- case UAC_INPUT_TERMINAL:
- return 0; /* NOP */
- case UAC_MIXER_UNIT:
- return parse_audio_mixer_unit(state, unitid, p1);
- case UAC_SELECTOR_UNIT:
- return parse_audio_selector_unit(state, unitid, p1);
- case UAC_FEATURE_UNIT:
- return parse_audio_feature_unit(state, unitid, p1);
- case UAC_PROCESSING_UNIT_V1:
- return parse_audio_processing_unit(state, unitid, p1);
- case UAC_EXTENSION_UNIT_V1:
- return parse_audio_extension_unit(state, unitid, p1);
- default:
- snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
- return -EINVAL;
- }
-}
-
-static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
-{
- kfree(mixer->id_elems);
- if (mixer->urb) {
- kfree(mixer->urb->transfer_buffer);
- usb_free_urb(mixer->urb);
- }
- usb_free_urb(mixer->rc_urb);
- kfree(mixer->rc_setup_packet);
- kfree(mixer);
-}
-
-static int snd_usb_mixer_dev_free(struct snd_device *device)
-{
- struct usb_mixer_interface *mixer = device->device_data;
- snd_usb_mixer_free(mixer);
- return 0;
-}
-
-/*
- * create mixer controls
- *
- * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
- */
-static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
-{
- struct uac_output_terminal_descriptor_v1 *desc;
- struct mixer_build state;
- int err;
- const struct usbmix_ctl_map *map;
- struct usb_host_interface *hostif;
-
- hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
- memset(&state, 0, sizeof(state));
- state.chip = mixer->chip;
- state.mixer = mixer;
- state.buffer = hostif->extra;
- state.buflen = hostif->extralen;
-
- /* check the mapping table */
- for (map = usbmix_ctl_maps; map->id; map++) {
- if (map->id == state.chip->usb_id) {
- state.map = map->map;
- state.selector_map = map->selector_map;
- mixer->ignore_ctl_error = map->ignore_ctl_error;
- break;
- }
- }
-
- desc = NULL;
- while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, UAC_OUTPUT_TERMINAL)) != NULL) {
- if (desc->bLength < 9)
- continue; /* invalid descriptor? */
- set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
- state.oterm.id = desc->bTerminalID;
- state.oterm.type = le16_to_cpu(desc->wTerminalType);
- state.oterm.name = desc->iTerminal;
- err = parse_audio_unit(&state, desc->bSourceID);
- if (err < 0)
- return err;
- }
- return 0;
-}
-
-void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid)
-{
- struct usb_mixer_elem_info *info;
-
- for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem)
- snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
- info->elem_id);
-}
-
-static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
- int unitid,
- struct usb_mixer_elem_info *cval)
-{
- static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN",
- "S8", "U8", "S16", "U16"};
- snd_iprintf(buffer, " Unit: %i\n", unitid);
- if (cval->elem_id)
- snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n",
- cval->elem_id->name, cval->elem_id->index);
- snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, "
- "channels=%i, type=\"%s\"\n", cval->id,
- cval->control, cval->cmask, cval->channels,
- val_types[cval->val_type]);
- snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
- cval->min, cval->max, cval->dBmin, cval->dBmax);
-}
-
-static void snd_usb_mixer_proc_read(struct snd_info_entry *entry,
- struct snd_info_buffer *buffer)
-{
- struct snd_usb_audio *chip = entry->private_data;
- struct usb_mixer_interface *mixer;
- struct usb_mixer_elem_info *cval;
- int unitid;
-
- list_for_each_entry(mixer, &chip->mixer_list, list) {
- snd_iprintf(buffer,
- "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n",
- chip->usb_id, mixer->ctrlif,
- mixer->ignore_ctl_error);
- snd_iprintf(buffer, "Card: %s\n", chip->card->longname);
- for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) {
- for (cval = mixer->id_elems[unitid]; cval;
- cval = cval->next_id_elem)
- snd_usb_mixer_dump_cval(buffer, unitid, cval);
- }
- }
-}
-
-static void snd_usb_mixer_status_complete(struct urb *urb)
-{
- struct usb_mixer_interface *mixer = urb->context;
-
- if (urb->status == 0) {
- u8 *buf = urb->transfer_buffer;
- int i;
-
- for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) {
- snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n",
- buf[0], buf[1]);
- /* ignore any notifications not from the control interface */
- if ((buf[0] & 0x0f) != 0)
- continue;
- if (!(buf[0] & 0x40))
- snd_usb_mixer_notify_id(mixer, buf[1]);
- else
- snd_usb_mixer_rc_memory_change(mixer, buf[1]);
- }
- }
- if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
- urb->dev = mixer->chip->dev;
- usb_submit_urb(urb, GFP_ATOMIC);
- }
-}
-
-/* create the handler for the optional status interrupt endpoint */
-static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
-{
- struct usb_host_interface *hostif;
- struct usb_endpoint_descriptor *ep;
- void *transfer_buffer;
- int buffer_length;
- unsigned int epnum;
-
- hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
- /* we need one interrupt input endpoint */
- if (get_iface_desc(hostif)->bNumEndpoints < 1)
- return 0;
- ep = get_endpoint(hostif, 0);
- if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
- return 0;
-
- epnum = usb_endpoint_num(ep);
- buffer_length = le16_to_cpu(ep->wMaxPacketSize);
- transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
- if (!transfer_buffer)
- return -ENOMEM;
- mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!mixer->urb) {
- kfree(transfer_buffer);
- return -ENOMEM;
- }
- usb_fill_int_urb(mixer->urb, mixer->chip->dev,
- usb_rcvintpipe(mixer->chip->dev, epnum),
- transfer_buffer, buffer_length,
- snd_usb_mixer_status_complete, mixer, ep->bInterval);
- usb_submit_urb(mixer->urb, GFP_KERNEL);
- return 0;
-}
-
-int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
- int ignore_error)
-{
- static struct snd_device_ops dev_ops = {
- .dev_free = snd_usb_mixer_dev_free
- };
- struct usb_mixer_interface *mixer;
- struct snd_info_entry *entry;
- struct usb_host_interface *host_iface;
- int err, protocol;
-
- strcpy(chip->card->mixername, "USB Mixer");
-
- mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
- if (!mixer)
- return -ENOMEM;
- mixer->chip = chip;
- mixer->ctrlif = ctrlif;
- mixer->ignore_ctl_error = ignore_error;
- mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems),
- GFP_KERNEL);
- if (!mixer->id_elems) {
- kfree(mixer);
- return -ENOMEM;
- }
-
- host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
- protocol = host_iface->desc.bInterfaceProtocol;
-
- /* FIXME! */
- if (protocol != UAC_VERSION_1) {
- snd_printk(KERN_WARNING "mixer interface protocol 0x%02x not yet supported\n",
- protocol);
- return 0;
- }
-
- if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
- (err = snd_usb_mixer_status_create(mixer)) < 0)
- goto _error;
-
- snd_usb_mixer_apply_create_quirk(mixer);
-
- err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
- if (err < 0)
- goto _error;
-
- if (list_empty(&chip->mixer_list) &&
- !snd_card_proc_new(chip->card, "usbmixer", &entry))
- snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read);
-
- list_add(&mixer->list, &chip->mixer_list);
- return 0;
-
-_error:
- snd_usb_mixer_free(mixer);
- return err;
-}
-
-void snd_usb_mixer_disconnect(struct list_head *p)
-{
- struct usb_mixer_interface *mixer;
-
- mixer = list_entry(p, struct usb_mixer_interface, list);
- usb_kill_urb(mixer->urb);
- usb_kill_urb(mixer->rc_urb);
-}
git.openpandora.org / pandora-kernel.git / blobdiff