1 files changed, 264 insertions, 107 deletions

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index c998220b99c6..8e8f871b74ca 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -32,6 +32,8 @@
 #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>
@@ -69,13 +71,16 @@ static const struct rc_config {
         { USB_ID(0x041e, 0x3048), 2, 2, 6, 6,  2,  0x6e91 }, /* Toshiba SB0500 */
 };
 
+#define MAX_ID_ELEMS    256
+
 struct usb_mixer_interface {
         struct snd_usb_audio *chip;
         unsigned int ctrlif;
         struct list_head list;
         unsigned int ignore_ctl_error;
         struct urb *urb;
-        struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */
+        /* array[MAX_ID_ELEMS], indexed by unit id */
+        struct usb_mixer_elem_info **id_elems;
 
         /* Sound Blaster remote control stuff */
         const struct rc_config *rc_cfg;
@@ -105,7 +110,7 @@ struct mixer_build {
         struct usb_mixer_interface *mixer;
         unsigned char *buffer;
         unsigned int buflen;
-        DECLARE_BITMAP(unitbitmap, 256);
+        DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
         struct usb_audio_term oterm;
         const struct usbmix_name_map *map;
         const struct usbmix_selector_map *selector_map;
@@ -123,6 +128,7 @@ struct usb_mixer_elem_info {
         int channels;
         int val_type;
         int min, max, res;
+        int dBmin, dBmax;
         int cached;
         int cache_val[MAX_CHANNELS];
         u8 initialized;
@@ -186,6 +192,21 @@ enum {
         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
@@ -194,42 +215,50 @@ enum {
  */
 #include "usbmixer_maps.c"
 
-/* get the mapped name if the unit matches */
-static int check_mapped_name(struct mixer_build *state, int unitid, int control, char *buf, int buflen)
+static const struct usbmix_name_map *
+find_map(struct mixer_build *state, int unitid, int control)
 {
-        const struct usbmix_name_map *p;
+        const struct usbmix_name_map *p = state->map;
 
-        if (! state->map)
-                return 0;
+        if (!p)
+                return NULL;
 
         for (p = state->map; p->id; p++) {
-                if (p->id == unitid && p->name &&
-                    (! control || ! p->control || control == p->control)) {
-                        buflen--;
-                        return strlcpy(buf, p->name, buflen);
-                }
+                if (p->id == unitid &&
+                    (!control || !p->control || control == p->control))
+                        return p;
         }
-        return 0;
+        return NULL;
 }
 
-/* check whether the control should be ignored */
-static int check_ignored_ctl(struct mixer_build *state, int unitid, int control)
+/* get the mapped name if the unit matches */
+static int
+check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen)
 {
-        const struct usbmix_name_map *p;
+        if (!p || !p->name)
+                return 0;
+
+        buflen--;
+        return strlcpy(buf, p->name, buflen);
+}
 
-        if (! state->map)
+/* 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;
-        for (p = state->map; p->id; p++) {
-                if (p->id == unitid && ! p->name &&
-                    (! control || ! p->control || control == p->control)) {
-                        /*
-                        printk(KERN_DEBUG "ignored control %d:%d\n",
-                               unitid, control);
-                        */
-                        return 1;
-                }
+        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;
         }
-        return 0;
 }
 
 /* get the mapped selector source name */
@@ -257,7 +286,7 @@ static void *find_audio_control_unit(struct mixer_build *state, unsigned char un
         p = NULL;
         while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
                                       USB_DT_CS_INTERFACE)) != NULL) {
-                if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit)
+                if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC_EXTENSION_UNIT_V1 && p[3] == unit)
                         return p;
         }
         return NULL;
@@ -378,14 +407,14 @@ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
 
 static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
 {
-        return get_ctl_value(cval, GET_CUR, validx, 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, GET_CUR, (cval->control << 8) | channel, 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,
@@ -439,14 +468,14 @@ static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
 
 static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
 {
-        return set_ctl_value(cval, SET_CUR, validx, value);
+        return 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 = set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel,
+        err = set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
                             value);
         if (err < 0)
                 return err;
@@ -466,20 +495,8 @@ static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
 
         if (size < sizeof(scale))
                 return -ENOMEM;
-        /* USB descriptions contain the dB scale in 1/256 dB unit
-         * while ALSA TLV contains in 1/100 dB unit
-         */
-        scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256;
-        scale[3] = (convert_signed_value(cval, cval->max) * 100) / 256;
-        if (scale[3] <= scale[2]) {
-                /* something is wrong; assume it's either from/to 0dB */
-                if (scale[2] < 0)
-                        scale[3] = 0;
-                else if (scale[2] > 0)
-                        scale[2] = 0;
-                else /* totally crap, return an error */
-                        return -EINVAL;
-        }
+        scale[2] = cval->dBmin;
+        scale[3] = cval->dBmax;
         if (copy_to_user(_tlv, scale, sizeof(scale)))
                 return -EFAULT;
         return 0;
@@ -588,13 +605,13 @@ static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm
                 if (term_only)
                         return 0;
                 switch (iterm->type >> 16) {
-                case SELECTOR_UNIT:
+                case UAC_SELECTOR_UNIT:
                         strcpy(name, "Selector"); return 8;
-                case PROCESSING_UNIT:
+                case UAC_PROCESSING_UNIT_V1:
                         strcpy(name, "Process Unit"); return 12;
-                case EXTENSION_UNIT:
+                case UAC_EXTENSION_UNIT_V1:
                         strcpy(name, "Ext Unit"); return 8;
-                case MIXER_UNIT:
+                case UAC_MIXER_UNIT:
                         strcpy(name, "Mixer"); return 5;
                 default:
                         return sprintf(name, "Unit %d", iterm->id);
@@ -633,22 +650,22 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_
         while ((p1 = find_audio_control_unit(state, id)) != NULL) {
                 term->id = id;
                 switch (p1[2]) {
-                case INPUT_TERMINAL:
+                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 FEATURE_UNIT:
+                case UAC_FEATURE_UNIT:
                         id = p1[4];
                         break; /* continue to parse */
-                case MIXER_UNIT:
+                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 SELECTOR_UNIT:
+                case UAC_SELECTOR_UNIT:
                         /* call recursively to retrieve the channel info */
                         if (check_input_term(state, p1[5], term) < 0)
                                 return -ENODEV;
@@ -656,8 +673,8 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_
                         term->id = id;
                         term->name = p1[9 + p1[0] - 1];
                         return 0;
-                case PROCESSING_UNIT:
-                case EXTENSION_UNIT:
+                case UAC_PROCESSING_UNIT_V1:
+                case UAC_EXTENSION_UNIT_V1:
                         if (p1[6] == 1) {
                                 id = p1[7];
                                 break; /* continue to parse */
@@ -720,6 +737,7 @@ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
         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) {
@@ -734,23 +752,23 @@ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
                                         break;
                                 }
                 }
-                if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
-                    get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
+                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, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
+                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 (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
+                                if (set_ctl_value(cval, UAC_SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0)
                                         break;
                                 cval->res /= 2;
                         }
-                        if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
+                        if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
                                 cval->res = last_valid_res;
                 }
                 if (cval->res == 0)
@@ -787,6 +805,24 @@ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
 
                 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;
 }
 
@@ -912,6 +948,7 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
         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 */
 
@@ -920,7 +957,8 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
                 return;
         }
 
-        if (check_ignored_ctl(state, unitid, control))
+        map = find_map(state, unitid, control);
+        if (check_ignored_ctl(map))
                 return;
 
         cval = kzalloc(sizeof(*cval), GFP_KERNEL);
@@ -954,10 +992,11 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
         }
         kctl->private_free = usb_mixer_elem_free;
 
-        len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name));
+        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));
+                len = snd_usb_copy_string_desc(state, nameid,
+                                kctl->id.name, sizeof(kctl->id.name));
 
         switch (control) {
         case USB_FEATURE_MUTE:
@@ -995,6 +1034,7 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
                         kctl->vd[0].access |= 
                                 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
                                 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
+                        check_mapped_dB(map, cval);
                 }
                 break;
 
@@ -1048,29 +1088,30 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
  *
  * most of controlls are defined here.
  */
-static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsigned char *ftr)
+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[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) {
-                snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid);
+        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[4])) < 0)
+        if ((err = parse_audio_unit(state, ftr->bSourceID)) < 0)
                 return err;
 
         /* determine the input source type and name */
-        if (check_input_term(state, ftr[4], &iterm) < 0)
+        if (check_input_term(state, ftr->bSourceID, &iterm) < 0)
                 return -EINVAL;
 
-        channels = (ftr[0] - 7) / csize - 1;
+        channels = (ftr->bLength - 7) / csize - 1;
 
-        master_bits = snd_usb_combine_bytes(ftr + 6, csize);
+        master_bits = snd_usb_combine_bytes(ftr->controls, csize);
         /* master configuration quirks */
         switch (state->chip->usb_id) {
         case USB_ID(0x08bb, 0x2702):
@@ -1081,21 +1122,21 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, unsig
                 break;
         }
         if (channels > 0)
-                first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize);
+                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 + 6 + csize * (j+1), csize);
+                        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);
+                        build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid);
                 if (master_bits & (1 << i))
-                        build_feature_ctl(state, ftr, 0, i, &iterm, unitid);
+                        build_feature_ctl(state, _ftr, 0, i, &iterm, unitid);
         }
 
         return 0;
@@ -1122,8 +1163,10 @@ static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
         unsigned int num_outs = desc[5 + input_pins];
         unsigned int i, len;
         struct snd_kcontrol *kctl;
+        const struct usbmix_name_map *map;
 
-        if (check_ignored_ctl(state, unitid, 0))
+        map = find_map(state, unitid, 0);
+        if (check_ignored_ctl(map))
                 return;
 
         cval = kzalloc(sizeof(*cval), GFP_KERNEL);
@@ -1152,7 +1195,7 @@ static void build_mixer_unit_ctl(struct mixer_build *state, unsigned char *desc,
         }
         kctl->private_free = usb_mixer_elem_free;
 
-        len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
+        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)
@@ -1330,7 +1373,32 @@ static struct procunit_info procunits[] = {
         { 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
  */
@@ -1342,6 +1410,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned
         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 }
@@ -1371,7 +1440,8 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned
                 /* FIXME: bitmap might be longer than 8bit */
                 if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1))))
                         continue;
-                if (check_ignored_ctl(state, unitid, valinfo->control))
+                map = find_map(state, unitid, valinfo->control);
+                if (check_ignored_ctl(map))
                         continue;
                 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
                 if (! cval) {
@@ -1391,8 +1461,18 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned
                         cval->max = dsc[15];
                         cval->res = 1;
                         cval->initialized = 1;
-                } else
-                        get_min_max(cval, valinfo->min_value);
+                } 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) {
@@ -1402,8 +1482,9 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned
                 }
                 kctl->private_free = usb_mixer_elem_free;
 
-                if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name)))
-                        ;
+                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 {
@@ -1433,7 +1514,7 @@ static int parse_audio_processing_unit(struct mixer_build *state, int unitid, un
 
 static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
 {
-        return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
+        return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
 }
 
 
@@ -1542,6 +1623,7 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsi
         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) {
@@ -1557,7 +1639,8 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsi
         if (num_ins == 1) /* only one ? nonsense! */
                 return 0;
 
-        if (check_ignored_ctl(state, unitid, 0))
+        map = find_map(state, unitid, 0);
+        if (check_ignored_ctl(map))
                 return 0;
 
         cval = kzalloc(sizeof(*cval), GFP_KERNEL);
@@ -1612,7 +1695,7 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsi
         kctl->private_free = usb_mixer_selector_elem_free;
 
         nameid = desc[desc[0] - 1];
-        len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name));
+        len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
         if (len)
                 ;
         else if (nameid)
@@ -1656,17 +1739,17 @@ static int parse_audio_unit(struct mixer_build *state, int unitid)
         }
 
         switch (p1[2]) {
-        case INPUT_TERMINAL:
+        case UAC_INPUT_TERMINAL:
                 return 0; /* NOP */
-        case MIXER_UNIT:
+        case UAC_MIXER_UNIT:
                 return parse_audio_mixer_unit(state, unitid, p1);
-        case SELECTOR_UNIT:
+        case UAC_SELECTOR_UNIT:
                 return parse_audio_selector_unit(state, unitid, p1);
-        case FEATURE_UNIT:
+        case UAC_FEATURE_UNIT:
                 return parse_audio_feature_unit(state, unitid, p1);
-        case PROCESSING_UNIT:
+        case UAC_PROCESSING_UNIT_V1:
                 return parse_audio_processing_unit(state, unitid, p1);
-        case EXTENSION_UNIT:
+        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]);
@@ -1696,11 +1779,11 @@ static int snd_usb_mixer_dev_free(struct snd_device *device)
 /*
  * create mixer controls
  *
- * walk through all OUTPUT_TERMINAL descriptors to search for mixers
+ * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
  */
 static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
 {
-        unsigned char *desc;
+        struct uac_output_terminal_descriptor_v1 *desc;
         struct mixer_build state;
         int err;
         const struct usbmix_ctl_map *map;
@@ -1724,14 +1807,14 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
         }
 
         desc = NULL;
-        while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) {
-                if (desc[0] < 9)
+        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[3], state.unitbitmap);  /* mark terminal ID as visited */
-                state.oterm.id = desc[3];
-                state.oterm.type = combine_word(&desc[4]);
-                state.oterm.name = desc[8];
-                err = parse_audio_unit(&state, desc[7]);
+                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;
         }
@@ -1748,6 +1831,46 @@ static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
                                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_memory_change(struct usb_mixer_interface *mixer,
                                         int unitid)
 {
@@ -1924,7 +2047,7 @@ static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
         }
         mixer->rc_setup_packet->bRequestType =
                 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
-        mixer->rc_setup_packet->bRequest = GET_MEM;
+        mixer->rc_setup_packet->bRequest = UAC_GET_MEM;
         mixer->rc_setup_packet->wValue = cpu_to_le16(0);
         mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
         mixer->rc_setup_packet->wLength = cpu_to_le16(len);
@@ -2047,7 +2170,7 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
                 snd_iprintf(buffer, "%s: ", jacks[i].name);
                 err = snd_usb_ctl_msg(mixer->chip->dev,
                                       usb_rcvctrlpipe(mixer->chip->dev, 0),
-                                      GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
+                                      UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
                                       USB_RECIP_INTERFACE, 0,
                                       jacks[i].unitid << 8, buf, 3, 100);
                 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
@@ -2109,6 +2232,24 @@ static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
         return 0;
 }
 
+void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
+                               unsigned char samplerate_id)
+{
+        struct usb_mixer_interface *mixer;
+        struct usb_mixer_elem_info *cval;
+        int unitid = 12; /* SamleRate ExtensionUnit ID */
+
+        list_for_each_entry(mixer, &chip->mixer_list, list) {
+                cval = mixer->id_elems[unitid];
+                if (cval) {
+                        set_cur_ctl_value(cval, cval->control << 8,
+                                          samplerate_id);
+                        snd_usb_mixer_notify_id(mixer, unitid);
+                }
+                break;
+        }
+}
+
 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
                          int ignore_error)
 {
@@ -2116,7 +2257,9 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
                 .dev_free = snd_usb_mixer_dev_free
         };
         struct usb_mixer_interface *mixer;
-        int err;
+        struct snd_info_entry *entry;
+        struct usb_host_interface *host_iface;
+        int err, protocol;
 
         strcpy(chip->card->mixername, "USB Mixer");
 
@@ -2126,12 +2269,23 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
         mixer->chip = chip;
         mixer->ctrlif = ctrlif;
         mixer->ignore_ctl_error = ignore_error;
-        mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL);
+        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;
@@ -2142,8 +2296,6 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
         if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
             mixer->chip->usb_id == USB_ID(0x041e, 0x3040) ||
             mixer->chip->usb_id == USB_ID(0x041e, 0x3048)) {
-                struct snd_info_entry *entry;
-
                 if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
                         goto _error;
                 if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
@@ -2161,6 +2313,11 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
         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;