diff options
author | Daniel Mack <daniel@caiaq.de> | 2010-03-11 21:13:23 +0100 |
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committer | Takashi Iwai <tiwai@suse.de> | 2010-03-12 12:20:49 +0100 |
commit | f0b5e634ff25e02a64676022ee13284a9c810879 (patch) | |
tree | eeac4a37546af0b28eaa895c82c217d3289ebb50 /sound/usb/usbmixer.c | |
parent | 7b1eda223debcba706ab989a09c4eecb327aebdf (diff) | |
download | op-kernel-dev-f0b5e634ff25e02a64676022ee13284a9c810879.zip op-kernel-dev-f0b5e634ff25e02a64676022ee13284a9c810879.tar.gz |
ALSA: usbmixer: rename usbmixer.[ch] -> mixer.[ch]
For clearer namespace, also rename usbmixer_maps.c -> mixer_maps.c
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbmixer.c')
-rw-r--r-- | sound/usb/usbmixer.c | 1920 |
1 files changed, 0 insertions, 1920 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c deleted file mode 100644 index ec2436e..0000000 --- a/sound/usb/usbmixer.c +++ /dev/null @@ -1,1920 +0,0 @@ -/* - * (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); -} |