X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=sound%2Fusb%2Fusbmixer.c;h=ec2436e953211fd7e3b1e0ad9f5961413d7a0eab;hb=7b1eda223debcba706ab989a09c4eecb327aebdf;hp=a49246113e7563c60f08c47d6104c7774d1073ac;hpb=7a9b8063cf7d78d7de4f2555357101087548c699;p=safe%2Fjmp%2Flinux-2.6

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index a492461..ec2436e 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>
@@ -39,55 +41,11 @@
 #include <sound/tlv.h>
 
 #include "usbaudio.h"
+#include "usbmixer.h"
+#include "helper.h"
+#include "mixer_quirks.h"
 
-/*
- */
-
-/* ignore error from controls - for debugging */
-/* #define IGNORE_CTL_ERROR */
-
-/*
- * Sound Blaster remote control configuration
- *
- * format of remote control data:
- * Extigy:       xx 00
- * Audigy 2 NX:  06 80 xx 00 00 00
- * Live! 24-bit: 06 80 xx yy 22 83
- */
-static const struct rc_config {
-	u32 usb_id;
-	u8  offset;
-	u8  length;
-	u8  packet_length;
-	u8  min_packet_length; /* minimum accepted length of the URB result */
-	u8  mute_mixer_id;
-	u32 mute_code;
-} rc_configs[] = {
-	{ USB_ID(0x041e, 0x3000), 0, 1, 2, 1,  18, 0x0013 }, /* Extigy       */
-	{ USB_ID(0x041e, 0x3020), 2, 1, 6, 6,  18, 0x0013 }, /* Audigy 2 NX  */
-	{ USB_ID(0x041e, 0x3040), 2, 2, 6, 6,  2,  0x6e91 }, /* Live! 24-bit */
-};
-
-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 */
-
-	/* Sound Blaster remote control stuff */
-	const struct rc_config *rc_cfg;
-	unsigned long rc_hwdep_open;
-	u32 rc_code;
-	wait_queue_head_t rc_waitq;
-	struct urb *rc_urb;
-	struct usb_ctrlrequest *rc_setup_packet;
-	u8 rc_buffer[6];
-
-	u8 audigy2nx_leds[3];
-};
-
+#define MAX_ID_ELEMS	256
 
 struct usb_audio_term {
 	int id;
@@ -104,40 +62,12 @@ 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;
 };
 
-struct usb_mixer_elem_info {
-	struct usb_mixer_interface *mixer;
-	struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */
-	struct snd_ctl_elem_id *elem_id;
-	unsigned int id;
-	unsigned int control;	/* CS or ICN (high byte) */
-	unsigned int cmask; /* channel mask bitmap: 0 = master */
-	int channels;
-	int val_type;
-	int min, max, res;
-	u8 initialized;
-};
-
-
-enum {
-	USB_FEATURE_NONE = 0,
-	USB_FEATURE_MUTE = 1,
-	USB_FEATURE_VOLUME,
-	USB_FEATURE_BASS,
-	USB_FEATURE_MID,
-	USB_FEATURE_TREBLE,
-	USB_FEATURE_GEQ,
-	USB_FEATURE_AGC,
-	USB_FEATURE_DELAY,
-	USB_FEATURE_BASSBOOST,
-	USB_FEATURE_LOUDNESS
-};
-
 enum {
 	USB_MIXER_BOOLEAN,
 	USB_MIXER_INV_BOOLEAN,
@@ -181,8 +111,21 @@ enum {
 	USB_PROC_DCR_RELEASE = 6,
 };
 
-#define MAX_CHANNELS	10	/* max logical channels */
-
+/*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
@@ -191,39 +134,50 @@ 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("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 */
@@ -251,7 +205,7 @@ 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;
@@ -372,20 +326,45 @@ 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_value(struct usb_mixer_elem_info *cval, int channel, int *value)
+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,
+			     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
  */
 
-static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int value_set)
+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;
@@ -394,7 +373,7 @@ static int set_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
 	value_set = convert_bytes_value(cval, value_set);
 	buf[0] = value_set & 0xff;
 	buf[1] = (value_set >> 8) & 0xff;
-	while (timeout -- > 0)
+	while (timeout-- > 0)
 		if (snd_usb_ctl_msg(cval->mixer->chip->dev,
 				    usb_sndctrlpipe(cval->mixer->chip->dev, 0),
 				    request,
@@ -409,12 +388,20 @@ 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 snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
 }
 
-static inline int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, int value)
+static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
+			     int index, int value)
 {
-	return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, 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;
 }
 
 /*
@@ -424,15 +411,12 @@ 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_SCALE(scale, 0, 0, 0);
+	DECLARE_TLV_DB_MINMAX(scale, 0, 0);
 
 	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->res) * 100) / 256;
+	scale[2] = cval->dBmin;
+	scale[3] = cval->dBmax;
 	if (copy_to_user(_tlv, scale, sizeof(scale)))
 		return -EFAULT;
 	return 0;
@@ -541,13 +525,13 @@ 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);
@@ -586,22 +570,22 @@ 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;
@@ -609,8 +593,8 @@ 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 */
@@ -673,6 +657,7 @@ 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) {
@@ -687,23 +672,24 @@ 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 (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, 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)
@@ -718,7 +704,7 @@ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
 		if (cval->min + cval->res < cval->max) {
 			int last_valid_res = cval->res;
 			int saved, test, check;
-			get_cur_mix_value(cval, minchn, &saved);
+			get_cur_mix_raw(cval, minchn, &saved);
 			for (;;) {
 				test = saved;
 				if (test < cval->max)
@@ -726,8 +712,8 @@ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
 				else
 					test -= cval->res;
 				if (test < cval->min || test > cval->max ||
-				    set_cur_mix_value(cval, minchn, test) ||
-				    get_cur_mix_value(cval, minchn, &check)) {
+				    set_cur_mix_value(cval, minchn, 0, test) ||
+				    get_cur_mix_raw(cval, minchn, &check)) {
 					cval->res = last_valid_res;
 					break;
 				}
@@ -735,11 +721,29 @@ static int get_min_max(struct usb_mixer_elem_info *cval, int default_min)
 					break;
 				cval->res *= 2;
 			}
-			set_cur_mix_value(cval, minchn, saved);
+			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;
 }
 
@@ -775,35 +779,25 @@ static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_e
 	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)) {
-				err = get_cur_mix_value(cval, c + 1, &val);
-				if (err < 0) {
-					if (cval->mixer->ignore_ctl_error) {
-						ucontrol->value.integer.value[0] = cval->min;
-						return 0;
-					}
-					snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err);
-					return err;
-				}
-				val = get_relative_value(cval, val);
-				ucontrol->value.integer.value[cnt] = val;
-				cnt++;
-			}
+			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, &val);
-		if (err < 0) {
-			if (cval->mixer->ignore_ctl_error) {
-				ucontrol->value.integer.value[0] = cval->min;
-				return 0;
-			}
-			snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err);
-			return err;
-		}
+		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;
 	}
@@ -820,34 +814,28 @@ static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
 	if (cval->cmask) {
 		cnt = 0;
 		for (c = 0; c < MAX_CHANNELS; c++) {
-			if (cval->cmask & (1 << c)) {
-				err = get_cur_mix_value(cval, c + 1, &oval);
-				if (err < 0) {
-					if (cval->mixer->ignore_ctl_error)
-						return 0;
-					return err;
-				}
-				val = ucontrol->value.integer.value[cnt];
-				val = get_abs_value(cval, val);
-				if (oval != val) {
-					set_cur_mix_value(cval, c + 1, val);
-					changed = 1;
-				}
-				get_cur_mix_value(cval, c + 1, &val);
-				cnt++;
+			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, &oval);
-		if (err < 0 && cval->mixer->ignore_ctl_error)
-			return 0;
+		err = get_cur_mix_value(cval, 0, 0, &oval);
 		if (err < 0)
-			return err;
+			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, val);
+			set_cur_mix_value(cval, 0, 0, val);
 			changed = 1;
 		}
 	}
@@ -867,6 +855,11 @@ static struct snd_kcontrol_new usb_feature_unit_ctl = {
  * 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)
@@ -876,15 +869,17 @@ 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 */
 
-	if (control == USB_FEATURE_GEQ) {
+	if (control == UAC_GRAPHIC_EQUALIZER_CONTROL) {
 		/* FIXME: not supported yet */
 		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);
@@ -918,14 +913,15 @@ 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:
-	case USB_FEATURE_VOLUME:
+	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
@@ -947,18 +943,19 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
 		 */
 		if (! mapped_name && ! (state->oterm.type >> 16)) {
 			if ((state->oterm.type & 0xff00) == 0x0100) {
-				len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name));
+				len = append_ctl_name(kctl, " Capture");
 			} else {
-				len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name));
+				len = append_ctl_name(kctl, " Playback");
 			}
 		}
-		strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
-			sizeof(kctl->id.name));
-		if (control == USB_FEATURE_VOLUME) {
+		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;
 
@@ -969,20 +966,35 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
 		break;
 	}
 
-	/* 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 */
+	/* 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 "using volume control quirk for the UDA1321/N101 chip\n");
+			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",
@@ -997,45 +1009,55 @@ 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):
+		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 + 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;
@@ -1062,8 +1084,10 @@ 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);
@@ -1092,12 +1116,12 @@ 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)
 		len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
-	strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name));
+	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);
@@ -1270,7 +1294,32 @@ 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
  */
@@ -1282,6 +1331,7 @@ 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 }
@@ -1311,7 +1361,8 @@ 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) {
@@ -1331,8 +1382,18 @@ 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) {
@@ -1342,8 +1403,9 @@ 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 {
@@ -1354,8 +1416,8 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned
 			if (! len)
 				strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
 		}
-		strlcat(kctl->id.name, " ", sizeof(kctl->id.name));
-		strlcat(kctl->id.name, valinfo->suffix, 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);
@@ -1373,7 +1435,7 @@ 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");
 }
 
 
@@ -1482,6 +1544,7 @@ 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) {
@@ -1497,7 +1560,8 @@ 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);
@@ -1552,7 +1616,7 @@ 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)
@@ -1564,9 +1628,9 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, unsi
 			strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
 
 		if ((state->oterm.type & 0xff00) == 0x0100)
-			strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name));
+			append_ctl_name(kctl, " Capture Source");
 		else
-			strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name));
+			append_ctl_name(kctl, " Playback Source");
 	}
 
 	snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n",
@@ -1596,17 +1660,17 @@ 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]);
@@ -1636,11 +1700,11 @@ 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;
@@ -1664,22 +1728,21 @@ 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;
 	}
 	return 0;
 }
 
-static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
-				    int unitid)
+void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid)
 {
 	struct usb_mixer_elem_info *info;
 
@@ -1688,30 +1751,43 @@ static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer,
 			       info->elem_id);
 }
 
-static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer,
-					int unitid)
+static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
+				    int unitid,
+				    struct usb_mixer_elem_info *cval)
 {
-	if (!mixer->rc_cfg)
-		return;
-	/* unit ids specific to Extigy/Audigy 2 NX: */
-	switch (unitid) {
-	case 0: /* remote control */
-		mixer->rc_urb->dev = mixer->chip->dev;
-		usb_submit_urb(mixer->rc_urb, GFP_ATOMIC);
-		break;
-	case 4: /* digital in jack */
-	case 7: /* line in jacks */
-	case 19: /* speaker out jacks */
-	case 20: /* headphones out jack */
-		break;
-	/* live24ext: 4 = line-in jack */
-	case 3:	/* hp-out jack (may actuate Mute) */
-		if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040))
-			snd_usb_mixer_notify_id(mixer, mixer->rc_cfg->mute_mixer_id);
-		break;
-	default:
-		snd_printd(KERN_DEBUG "memory change in unknown unit %d\n", unitid);
-		break;
+	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);
+		}
 	}
 }
 
@@ -1732,7 +1808,7 @@ static void snd_usb_mixer_status_complete(struct urb *urb)
 			if (!(buf[0] & 0x40))
 				snd_usb_mixer_notify_id(mixer, buf[1]);
 			else
-				snd_usb_mixer_memory_change(mixer, buf[1]);
+				snd_usb_mixer_rc_memory_change(mixer, buf[1]);
 		}
 	}
 	if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
@@ -1755,11 +1831,10 @@ static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
 	if (get_iface_desc(hostif)->bNumEndpoints < 1)
 		return 0;
 	ep = get_endpoint(hostif, 0);
-	if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN ||
-	    (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
+	if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
 		return 0;
 
-	epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+	epnum = usb_endpoint_num(ep);
 	buffer_length = le16_to_cpu(ep->wMaxPacketSize);
 	transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
 	if (!transfer_buffer)
@@ -1777,243 +1852,6 @@ static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
 	return 0;
 }
 
-static void snd_usb_soundblaster_remote_complete(struct urb *urb)
-{
-	struct usb_mixer_interface *mixer = urb->context;
-	const struct rc_config *rc = mixer->rc_cfg;
-	u32 code;
-
-	if (urb->status < 0 || urb->actual_length < rc->min_packet_length)
-		return;
-
-	code = mixer->rc_buffer[rc->offset];
-	if (rc->length == 2)
-		code |= mixer->rc_buffer[rc->offset + 1] << 8;
-
-	/* the Mute button actually changes the mixer control */
-	if (code == rc->mute_code)
-		snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id);
-	mixer->rc_code = code;
-	wmb();
-	wake_up(&mixer->rc_waitq);
-}
-
-static int snd_usb_sbrc_hwdep_open(struct snd_hwdep *hw, struct file *file)
-{
-	struct usb_mixer_interface *mixer = hw->private_data;
-
-	if (test_and_set_bit(0, &mixer->rc_hwdep_open))
-		return -EBUSY;
-	return 0;
-}
-
-static int snd_usb_sbrc_hwdep_release(struct snd_hwdep *hw, struct file *file)
-{
-	struct usb_mixer_interface *mixer = hw->private_data;
-
-	clear_bit(0, &mixer->rc_hwdep_open);
-	smp_mb__after_clear_bit();
-	return 0;
-}
-
-static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
-				     long count, loff_t *offset)
-{
-	struct usb_mixer_interface *mixer = hw->private_data;
-	int err;
-	u32 rc_code;
-
-	if (count != 1 && count != 4)
-		return -EINVAL;
-	err = wait_event_interruptible(mixer->rc_waitq,
-				       (rc_code = xchg(&mixer->rc_code, 0)) != 0);
-	if (err == 0) {
-		if (count == 1)
-			err = put_user(rc_code, buf);
-		else
-			err = put_user(rc_code, (u32 __user *)buf);
-	}
-	return err < 0 ? err : count;
-}
-
-static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
-					    poll_table *wait)
-{
-	struct usb_mixer_interface *mixer = hw->private_data;
-
-	poll_wait(file, &mixer->rc_waitq, wait);
-	return mixer->rc_code ? POLLIN | POLLRDNORM : 0;
-}
-
-static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
-{
-	struct snd_hwdep *hwdep;
-	int err, len, i;
-
-	for (i = 0; i < ARRAY_SIZE(rc_configs); ++i)
-		if (rc_configs[i].usb_id == mixer->chip->usb_id)
-			break;
-	if (i >= ARRAY_SIZE(rc_configs))
-		return 0;
-	mixer->rc_cfg = &rc_configs[i];
-
-	len = mixer->rc_cfg->packet_length;
-	
-	init_waitqueue_head(&mixer->rc_waitq);
-	err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep);
-	if (err < 0)
-		return err;
-	snprintf(hwdep->name, sizeof(hwdep->name),
-		 "%s remote control", mixer->chip->card->shortname);
-	hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
-	hwdep->private_data = mixer;
-	hwdep->ops.read = snd_usb_sbrc_hwdep_read;
-	hwdep->ops.open = snd_usb_sbrc_hwdep_open;
-	hwdep->ops.release = snd_usb_sbrc_hwdep_release;
-	hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
-
-	mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!mixer->rc_urb)
-		return -ENOMEM;
-	mixer->rc_setup_packet = kmalloc(sizeof(*mixer->rc_setup_packet), GFP_KERNEL);
-	if (!mixer->rc_setup_packet) {
-		usb_free_urb(mixer->rc_urb);
-		mixer->rc_urb = NULL;
-		return -ENOMEM;
-	}
-	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->wValue = cpu_to_le16(0);
-	mixer->rc_setup_packet->wIndex = cpu_to_le16(0);
-	mixer->rc_setup_packet->wLength = cpu_to_le16(len);
-	usb_fill_control_urb(mixer->rc_urb, mixer->chip->dev,
-			     usb_rcvctrlpipe(mixer->chip->dev, 0),
-			     (u8*)mixer->rc_setup_packet, mixer->rc_buffer, len,
-			     snd_usb_soundblaster_remote_complete, mixer);
-	return 0;
-}
-
-#define snd_audigy2nx_led_info		snd_ctl_boolean_mono_info
-
-static int snd_audigy2nx_led_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
-	int index = kcontrol->private_value;
-
-	ucontrol->value.integer.value[0] = mixer->audigy2nx_leds[index];
-	return 0;
-}
-
-static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
-	int index = kcontrol->private_value;
-	int value = ucontrol->value.integer.value[0];
-	int err, changed;
-
-	if (value > 1)
-		return -EINVAL;
-	changed = value != mixer->audigy2nx_leds[index];
-	err = snd_usb_ctl_msg(mixer->chip->dev,
-			      usb_sndctrlpipe(mixer->chip->dev, 0), 0x24,
-			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
-			      value, index + 2, NULL, 0, 100);
-	if (err < 0)
-		return err;
-	mixer->audigy2nx_leds[index] = value;
-	return changed;
-}
-
-static struct snd_kcontrol_new snd_audigy2nx_controls[] = {
-	{
-		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-		.name = "CMSS LED Switch",
-		.info = snd_audigy2nx_led_info,
-		.get = snd_audigy2nx_led_get,
-		.put = snd_audigy2nx_led_put,
-		.private_value = 0,
-	},
-	{
-		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-		.name = "Power LED Switch",
-		.info = snd_audigy2nx_led_info,
-		.get = snd_audigy2nx_led_get,
-		.put = snd_audigy2nx_led_put,
-		.private_value = 1,
-	},
-	{
-		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-		.name = "Dolby Digital LED Switch",
-		.info = snd_audigy2nx_led_info,
-		.get = snd_audigy2nx_led_get,
-		.put = snd_audigy2nx_led_put,
-		.private_value = 2,
-	},
-};
-
-static int snd_audigy2nx_controls_create(struct usb_mixer_interface *mixer)
-{
-	int i, err;
-
-	for (i = 0; i < ARRAY_SIZE(snd_audigy2nx_controls); ++i) {
-		if (i > 1 &&  /* Live24ext has 2 LEDs only */
-			mixer->chip->usb_id == USB_ID(0x041e, 0x3040))
-			break; 
-		err = snd_ctl_add(mixer->chip->card,
-				  snd_ctl_new1(&snd_audigy2nx_controls[i], mixer));
-		if (err < 0)
-			return err;
-	}
-	mixer->audigy2nx_leds[1] = 1; /* Power LED is on by default */
-	return 0;
-}
-
-static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
-				    struct snd_info_buffer *buffer)
-{
-	static const struct sb_jack {
-		int unitid;
-		const char *name;
-	}  jacks_audigy2nx[] = {
-		{4,  "dig in "},
-		{7,  "line in"},
-		{19, "spk out"},
-		{20, "hph out"},
-		{-1, NULL}
-	}, jacks_live24ext[] = {
-		{4,  "line in"}, /* &1=Line, &2=Mic*/
-		{3,  "hph out"}, /* headphones */
-		{0,  "RC     "}, /* last command, 6 bytes see rc_config above */
-		{-1, NULL}
-	};
-	const struct sb_jack *jacks;
-	struct usb_mixer_interface *mixer = entry->private_data;
-	int i, err;
-	u8 buf[3];
-
-	snd_iprintf(buffer, "%s jacks\n\n", mixer->chip->card->shortname);
-	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020))
-		jacks = jacks_audigy2nx;
-	else if (mixer->chip->usb_id == USB_ID(0x041e, 0x3040))
-		jacks = jacks_live24ext;
-	else
-		return;
-
-	for (i = 0; jacks[i].name; ++i) {
-		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 |
-				      USB_RECIP_INTERFACE, 0,
-				      jacks[i].unitid << 8, buf, 3, 100);
-		if (err == 3 && (buf[0] == 3 || buf[0] == 6))
-			snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
-		else
-			snd_iprintf(buffer, "?\n");
-	}
-}
-
 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
 			 int ignore_error)
 {
@@ -2021,7 +1859,9 @@ 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");
 
@@ -2031,33 +1871,37 @@ 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;
 
-	if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0)
-		goto _error;
-
-	if (mixer->chip->usb_id == USB_ID(0x041e, 0x3020) ||
-	    mixer->chip->usb_id == USB_ID(0x041e, 0x3040)) {
-		struct snd_info_entry *entry;
-
-		if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
-			goto _error;
-		if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
-			snd_info_set_text_ops(entry, mixer,
-					      snd_audigy2nx_proc_read);
-	}
+	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;
 
@@ -2069,7 +1913,7 @@ _error:
 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);