Merge branch 'topic/misc' into for-linus

86 files changed, 2025 insertions, 1584 deletions

diff --git a/Documentation/DocBook/writing-an-alsa-driver.tmpl b/Documentation/DocBook/writing-an-alsa-driver.tmpl
index 598c22f3b3ac..5de23c007078 100644
--- a/Documentation/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/DocBook/writing-an-alsa-driver.tmpl
@@ -4288,7 +4288,7 @@ struct _snd_pcm_runtime {
 <![CDATA[
   struct snd_rawmidi *rmidi;
   snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port, info_flags,
-                      irq, irq_flags, &rmidi);
+                      irq, &rmidi);
 ]]>
           </programlisting>
         </informalexample>
@@ -4343,6 +4343,13 @@ struct _snd_pcm_runtime {
         by itself to start processing the output stream in the irq handler.
         </para>
 
+        <para>
+        If the MPU-401 interface shares its interrupt with the other logical
+        devices on the card, set <constant>MPU401_INFO_IRQ_HOOK</constant>
+        (see <link linkend="midi-interface-interrupt-handler"><citetitle>
+        below</citetitle></link>).
+        </para>
+
       <para>
         Usually, the port address corresponds to the command port and
         port + 1 corresponds to the data port. If not, you may change
@@ -4375,14 +4382,12 @@ struct _snd_pcm_runtime {
       </para>
 
       <para>
-        The 6th argument specifies the irq number for UART. If the irq
-      is already allocated, pass 0 to the 7th argument
-      (<parameter>irq_flags</parameter>). Otherwise, pass the flags
-      for irq allocation 
-      (<constant>SA_XXX</constant> bits) to it, and the irq will be
-      reserved by the mpu401-uart layer. If the card doesn't generate
-      UART interrupts, pass -1 as the irq number. Then a timer
-      interrupt will be invoked for polling. 
+        The 6th argument specifies the ISA irq number that will be
+        allocated.  If no interrupt is to be allocated (because your
+        code is already allocating a shared interrupt, or because the
+        device does not use interrupts), pass -1 instead.
+        For a MPU-401 device without an interrupt, a polling timer
+        will be used instead.
       </para>
     </section>
 
@@ -4390,12 +4395,13 @@ struct _snd_pcm_runtime {
       <title>Interrupt Handler</title>
       <para>
         When the interrupt is allocated in
-      <function>snd_mpu401_uart_new()</function>, the private
-      interrupt handler is used, hence you don't have anything else to do
-      than creating the mpu401 stuff. Otherwise, you have to call
-      <function>snd_mpu401_uart_interrupt()</function> explicitly when
-      a UART interrupt is invoked and checked in your own interrupt
-      handler.  
+      <function>snd_mpu401_uart_new()</function>, an exclusive ISA
+      interrupt handler is automatically used, hence you don't have
+      anything else to do than creating the mpu401 stuff.  Otherwise, you
+      have to set <constant>MPU401_INFO_IRQ_HOOK</constant>, and call
+      <function>snd_mpu401_uart_interrupt()</function> explicitly from your
+      own interrupt handler when it has determined that a UART interrupt
+      has occurred.
       </para>
 
       <para>
diff --git a/MAINTAINERS b/MAINTAINERS
index 0b4ccdd35bbb..a676343a27bc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5990,7 +5990,7 @@ M:	Jaroslav Kysela <perex@perex.cz>
 M:      Takashi Iwai <tiwai@suse.de>
 L:      alsa-devel@alsa-project.org (moderated for non-subscribers)
 W:      http://www.alsa-project.org/
-T:      git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
+T:      git git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
 T:      git git://git.alsa-project.org/alsa-kernel.git
 S:      Maintained
 F:      Documentation/sound/
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 0fd3fbdd8283..f30253599501 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -377,12 +377,6 @@ struct usb_endpoint_descriptor {
 #define USB_ENDPOINT_NUMBER_MASK        0x0f    /* in bEndpointAddress */
 #define USB_ENDPOINT_DIR_MASK           0x80
 
-#define USB_ENDPOINT_SYNCTYPE           0x0c
-#define USB_ENDPOINT_SYNC_NONE          (0 << 2)
-#define USB_ENDPOINT_SYNC_ASYNC         (1 << 2)
-#define USB_ENDPOINT_SYNC_ADAPTIVE      (2 << 2)
-#define USB_ENDPOINT_SYNC_SYNC          (3 << 2)
-
 #define USB_ENDPOINT_XFERTYPE_MASK      0x03    /* in bmAttributes */
 #define USB_ENDPOINT_XFER_CONTROL       0
 #define USB_ENDPOINT_XFER_ISOC          1
@@ -390,6 +384,17 @@ struct usb_endpoint_descriptor {
 #define USB_ENDPOINT_XFER_INT           3
 #define USB_ENDPOINT_MAX_ADJUSTABLE     0x80
 
+#define USB_ENDPOINT_SYNCTYPE           0x0c
+#define USB_ENDPOINT_SYNC_NONE          (0 << 2)
+#define USB_ENDPOINT_SYNC_ASYNC         (1 << 2)
+#define USB_ENDPOINT_SYNC_ADAPTIVE      (2 << 2)
+#define USB_ENDPOINT_SYNC_SYNC          (3 << 2)
+
+#define USB_ENDPOINT_USAGE_MASK         0x30
+#define USB_ENDPOINT_USAGE_DATA         0x00
+#define USB_ENDPOINT_USAGE_FEEDBACK     0x10
+#define USB_ENDPOINT_USAGE_IMPLICIT_FB  0x20    /* Implicit feedback Data endpoint */
+
 /*-------------------------------------------------------------------------*/
 
 /**
diff --git a/include/sound/asound.h b/include/sound/asound.h
index 5d6074faa279..a2e4ff5ba9e9 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -706,7 +706,7 @@ struct snd_timer_tread {
  *                                                                          *
  ****************************************************************************/
 
-#define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 6)
+#define SNDRV_CTL_VERSION               SNDRV_PROTOCOL_VERSION(2, 0, 7)
 
 struct snd_ctl_card_info {
         int card;                       /* card number */
@@ -803,6 +803,8 @@ struct snd_ctl_elem_info {
                         unsigned int items;     /* R: number of items */
                         unsigned int item;      /* W: item number */
                         char name[64];          /* R: value name */
+                        __u64 names_ptr;        /* W: names list (ELEM_ADD only) */
+                        unsigned int names_length;
                 } enumerated;
                 unsigned char reserved[128];
         } value;
diff --git a/include/sound/mpu401.h b/include/sound/mpu401.h
index 1f1d53f8830b..20230db00ef1 100644
--- a/include/sound/mpu401.h
+++ b/include/sound/mpu401.h
@@ -50,7 +50,10 @@
 #define MPU401_INFO_INTEGRATED  (1 << 2)        /* integrated h/w port */
 #define MPU401_INFO_MMIO        (1 << 3)        /* MMIO access */
 #define MPU401_INFO_TX_IRQ      (1 << 4)        /* independent TX irq */
+#define MPU401_INFO_IRQ_HOOK    (1 << 5)        /* mpu401 irq handler is called
+                                                   from driver irq handler */
 #define MPU401_INFO_NO_ACK      (1 << 6)        /* No ACK cmd needed */
+#define MPU401_INFO_USE_TIMER   (1 << 15)       /* internal */
 
 #define MPU401_MODE_BIT_INPUT           0
 #define MPU401_MODE_BIT_OUTPUT          1
@@ -73,8 +76,7 @@ struct snd_mpu401 {
         unsigned long port;             /* base port of MPU-401 chip */
         unsigned long cport;            /* port + 1 (usually) */
         struct resource *res;           /* port resource */
-        int irq;                        /* IRQ number of MPU-401 chip (-1 = poll) */
-        int irq_flags;
+        int irq;                        /* IRQ number of MPU-401 chip */
 
         unsigned long mode;             /* MPU401_MODE_XXXX */
         int timer_invoked;
@@ -131,7 +133,6 @@ int snd_mpu401_uart_new(struct snd_card *card,
                         unsigned long port,
                         unsigned int info_flags,
                         int irq,
-                        int irq_flags,
                         struct snd_rawmidi ** rrawmidi);
 
 #endif /* __SOUND_MPU401_H */
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 249d98838d90..3e7fda6e8164 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -825,6 +825,8 @@ int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime,
 int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
                                unsigned int cond,
                                snd_pcm_hw_param_t var);
+int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime,
+                               unsigned int base_rate);
 int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime,
                         unsigned int cond,
                         int var,
diff --git a/sound/aoa/codecs/onyx.c b/sound/aoa/codecs/onyx.c
index 3687a6cc9881..762af68c8996 100644
--- a/sound/aoa/codecs/onyx.c
+++ b/sound/aoa/codecs/onyx.c
@@ -1067,7 +1067,6 @@ static int onyx_i2c_probe(struct i2c_client *client,
         printk(KERN_DEBUG PFX "created and attached onyx instance\n");
         return 0;
  fail:
-        i2c_set_clientdata(client, NULL);
         kfree(onyx);
         return -ENODEV;
 }
@@ -1112,8 +1111,7 @@ static int onyx_i2c_remove(struct i2c_client *client)
 
         aoa_codec_unregister(&onyx->codec);
         of_node_put(onyx->codec.node);
-        if (onyx->codec_info)
-                kfree(onyx->codec_info);
+        kfree(onyx->codec_info);
         kfree(onyx);
         return 0;
 }
diff --git a/sound/core/control.c b/sound/core/control.c
index f8c5be464510..978fe1a8e9f0 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -989,7 +989,6 @@ struct user_element {
         void *tlv_data;                 /* TLV data */
         unsigned long tlv_data_size;    /* TLV data size */
         void *priv_data;                /* private data (like strings for enumerated type) */
-        unsigned long priv_data_size;   /* size of private data in bytes */
 };
 
 static int snd_ctl_elem_user_info(struct snd_kcontrol *kcontrol,
@@ -1001,6 +1000,28 @@ static int snd_ctl_elem_user_info(struct snd_kcontrol *kcontrol,
         return 0;
 }
 
+static int snd_ctl_elem_user_enum_info(struct snd_kcontrol *kcontrol,
+                                       struct snd_ctl_elem_info *uinfo)
+{
+        struct user_element *ue = kcontrol->private_data;
+        const char *names;
+        unsigned int item;
+
+        item = uinfo->value.enumerated.item;
+
+        *uinfo = ue->info;
+
+        item = min(item, uinfo->value.enumerated.items - 1);
+        uinfo->value.enumerated.item = item;
+
+        names = ue->priv_data;
+        for (; item > 0; --item)
+                names += strlen(names) + 1;
+        strcpy(uinfo->value.enumerated.name, names);
+
+        return 0;
+}
+
 static int snd_ctl_elem_user_get(struct snd_kcontrol *kcontrol,
                                  struct snd_ctl_elem_value *ucontrol)
 {
@@ -1055,11 +1076,46 @@ static int snd_ctl_elem_user_tlv(struct snd_kcontrol *kcontrol,
         return change;
 }
 
+static int snd_ctl_elem_init_enum_names(struct user_element *ue)
+{
+        char *names, *p;
+        size_t buf_len, name_len;
+        unsigned int i;
+
+        if (ue->info.value.enumerated.names_length > 64 * 1024)
+                return -EINVAL;
+
+        names = memdup_user(
+                (const void __user *)ue->info.value.enumerated.names_ptr,
+                ue->info.value.enumerated.names_length);
+        if (IS_ERR(names))
+                return PTR_ERR(names);
+
+        /* check that there are enough valid names */
+        buf_len = ue->info.value.enumerated.names_length;
+        p = names;
+        for (i = 0; i < ue->info.value.enumerated.items; ++i) {
+                name_len = strnlen(p, buf_len);
+                if (name_len == 0 || name_len >= 64 || name_len == buf_len) {
+                        kfree(names);
+                        return -EINVAL;
+                }
+                p += name_len + 1;
+                buf_len -= name_len + 1;
+        }
+
+        ue->priv_data = names;
+        ue->info.value.enumerated.names_ptr = 0;
+
+        return 0;
+}
+
 static void snd_ctl_elem_user_free(struct snd_kcontrol *kcontrol)
 {
         struct user_element *ue = kcontrol->private_data;
-        if (ue->tlv_data)
-                kfree(ue->tlv_data);
+
+        kfree(ue->tlv_data);
+        kfree(ue->priv_data);
         kfree(ue);
 }
 
@@ -1072,8 +1128,8 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
         long private_size;
         struct user_element *ue;
         int idx, err;
-        
-        if (card->user_ctl_count >= MAX_USER_CONTROLS)
+
+        if (!replace && card->user_ctl_count >= MAX_USER_CONTROLS)
                 return -ENOMEM;
         if (info->count < 1)
                 return -EINVAL;
@@ -1101,7 +1157,10 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
         memcpy(&kctl.id, &info->id, sizeof(info->id));
         kctl.count = info->owner ? info->owner : 1;
         access |= SNDRV_CTL_ELEM_ACCESS_USER;
-        kctl.info = snd_ctl_elem_user_info;
+        if (info->type == SNDRV_CTL_ELEM_TYPE_ENUMERATED)
+                kctl.info = snd_ctl_elem_user_enum_info;
+        else
+                kctl.info = snd_ctl_elem_user_info;
         if (access & SNDRV_CTL_ELEM_ACCESS_READ)
                 kctl.get = snd_ctl_elem_user_get;
         if (access & SNDRV_CTL_ELEM_ACCESS_WRITE)
@@ -1122,6 +1181,11 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
                 if (info->count > 64)
                         return -EINVAL;
                 break;
+        case SNDRV_CTL_ELEM_TYPE_ENUMERATED:
+                private_size = sizeof(unsigned int);
+                if (info->count > 128 || info->value.enumerated.items == 0)
+                        return -EINVAL;
+                break;
         case SNDRV_CTL_ELEM_TYPE_BYTES:
                 private_size = sizeof(unsigned char);
                 if (info->count > 512)
@@ -1143,9 +1207,17 @@ static int snd_ctl_elem_add(struct snd_ctl_file *file,
         ue->info.access = 0;
         ue->elem_data = (char *)ue + sizeof(*ue);
         ue->elem_data_size = private_size;
+        if (ue->info.type == SNDRV_CTL_ELEM_TYPE_ENUMERATED) {
+                err = snd_ctl_elem_init_enum_names(ue);
+                if (err < 0) {
+                        kfree(ue);
+                        return err;
+                }
+        }
         kctl.private_free = snd_ctl_elem_user_free;
         _kctl = snd_ctl_new(&kctl, access);
         if (_kctl == NULL) {
+                kfree(ue->priv_data);
                 kfree(ue);
                 return -ENOMEM;
         }
diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c
index 426874429a5e..2bb95a7a8809 100644
--- a/sound/core/control_compat.c
+++ b/sound/core/control_compat.c
@@ -83,6 +83,8 @@ struct snd_ctl_elem_info32 {
                         u32 items;
                         u32 item;
                         char name[64];
+                        u64 names_ptr;
+                        u32 names_length;
                 } enumerated;
                 unsigned char reserved[128];
         } value;
@@ -372,6 +374,8 @@ static int snd_ctl_elem_add_compat(struct snd_ctl_file *file,
                                    &data32->value.enumerated,
                                    sizeof(data->value.enumerated)))
                         goto error;
+                data->value.enumerated.names_ptr =
+                        (uintptr_t)compat_ptr(data->value.enumerated.names_ptr);
                 break;
         default:
                 break;
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index d8359cfeca15..1b5e0c49a0ad 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -499,7 +499,7 @@ static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, c
         
         memset(&id, 0, sizeof(id));
         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
-        strcpy(id.name, name);
+        strlcpy(id.name, name, sizeof(id.name));
         id.index = index;
         return snd_ctl_find_id(card, &id);
 }
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 62e90b862a0d..95d1e789715f 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1399,6 +1399,32 @@ int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
 
 EXPORT_SYMBOL(snd_pcm_hw_constraint_pow2);
 
+static int snd_pcm_hw_rule_noresample_func(struct snd_pcm_hw_params *params,
+                                           struct snd_pcm_hw_rule *rule)
+{
+        unsigned int base_rate = (unsigned int)(uintptr_t)rule->private;
+        struct snd_interval *rate;
+
+        rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+        return snd_interval_list(rate, 1, &base_rate, 0);
+}
+
+/**
+ * snd_pcm_hw_rule_noresample - add a rule to allow disabling hw resampling
+ * @runtime: PCM runtime instance
+ * @base_rate: the rate at which the hardware does not resample
+ */
+int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime,
+                               unsigned int base_rate)
+{
+        return snd_pcm_hw_rule_add(runtime, SNDRV_PCM_HW_PARAMS_NORESAMPLE,
+                                   SNDRV_PCM_HW_PARAM_RATE,
+                                   snd_pcm_hw_rule_noresample_func,
+                                   (void *)(uintptr_t)base_rate,
+                                   SNDRV_PCM_HW_PARAM_RATE, -1);
+}
+EXPORT_SYMBOL(snd_pcm_hw_rule_noresample);
+
 static void _snd_pcm_hw_param_any(struct snd_pcm_hw_params *params,
                                   snd_pcm_hw_param_t var)
 {
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index b4bf4a4d94a9..77d7df22e7c8 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2058,16 +2058,12 @@ EXPORT_SYMBOL(snd_pcm_open_substream);
 
 static int snd_pcm_open_file(struct file *file,
                              struct snd_pcm *pcm,
-                             int stream,
-                             struct snd_pcm_file **rpcm_file)
+                             int stream)
 {
         struct snd_pcm_file *pcm_file;
         struct snd_pcm_substream *substream;
         int err;
 
-        if (rpcm_file)
-                *rpcm_file = NULL;
-
         err = snd_pcm_open_substream(pcm, stream, file, &substream);
         if (err < 0)
                 return err;
@@ -2083,8 +2079,7 @@ static int snd_pcm_open_file(struct file *file,
                 substream->pcm_release = pcm_release_private;
         }
         file->private_data = pcm_file;
-        if (rpcm_file)
-                *rpcm_file = pcm_file;
+
         return 0;
 }
 
@@ -2113,7 +2108,6 @@ static int snd_pcm_capture_open(struct inode *inode, struct file *file)
 static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream)
 {
         int err;
-        struct snd_pcm_file *pcm_file;
         wait_queue_t wait;
 
         if (pcm == NULL) {
@@ -2131,7 +2125,7 @@ static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream)
         add_wait_queue(&pcm->open_wait, &wait);
         mutex_lock(&pcm->open_mutex);
         while (1) {
-                err = snd_pcm_open_file(file, pcm, stream, &pcm_file);
+                err = snd_pcm_open_file(file, pcm, stream);
                 if (err >= 0)
                         break;
                 if (err == -EAGAIN) {
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
index a0da7755fcea..4067f1548949 100644
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -575,7 +575,8 @@ static void loopback_runtime_free(struct snd_pcm_runtime *runtime)
 static int loopback_hw_params(struct snd_pcm_substream *substream,
                               struct snd_pcm_hw_params *params)
 {
-        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+        return snd_pcm_lib_alloc_vmalloc_buffer(substream,
+                                                params_buffer_bytes(params));
 }
 
 static int loopback_hw_free(struct snd_pcm_substream *substream)
@@ -587,7 +588,7 @@ static int loopback_hw_free(struct snd_pcm_substream *substream)
         mutex_lock(&dpcm->loopback->cable_lock);
         cable->valid &= ~(1 << substream->stream);
         mutex_unlock(&dpcm->loopback->cable_lock);
-        return snd_pcm_lib_free_pages(substream);
+        return snd_pcm_lib_free_vmalloc_buffer(substream);
 }
 
 static unsigned int get_cable_index(struct snd_pcm_substream *substream)
@@ -740,6 +741,8 @@ static struct snd_pcm_ops loopback_playback_ops = {
         .prepare =      loopback_prepare,
         .trigger =      loopback_trigger,
         .pointer =      loopback_pointer,
+        .page =         snd_pcm_lib_get_vmalloc_page,
+        .mmap =         snd_pcm_lib_mmap_vmalloc,
 };
 
 static struct snd_pcm_ops loopback_capture_ops = {
@@ -751,6 +754,8 @@ static struct snd_pcm_ops loopback_capture_ops = {
         .prepare =      loopback_prepare,
         .trigger =      loopback_trigger,
         .pointer =      loopback_pointer,
+        .page =         snd_pcm_lib_get_vmalloc_page,
+        .mmap =         snd_pcm_lib_mmap_vmalloc,
 };
 
 static int __devinit loopback_pcm_new(struct loopback *loopback,
@@ -771,10 +776,6 @@ static int __devinit loopback_pcm_new(struct loopback *loopback,
         strcpy(pcm->name, "Loopback PCM");
 
         loopback->pcm[device] = pcm;
-
-        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-                        snd_dma_continuous_data(GFP_KERNEL),
-                        0, 2 * 1024 * 1024);
         return 0;
 }
 
diff --git a/sound/drivers/mpu401/mpu401.c b/sound/drivers/mpu401/mpu401.c
index 149d05a8202d..1c02852aceea 100644
--- a/sound/drivers/mpu401/mpu401.c
+++ b/sound/drivers/mpu401/mpu401.c
@@ -86,8 +86,7 @@ static int snd_mpu401_create(int dev, struct snd_card **rcard)
         }
 
         err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0,
-                                  irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0,
-                                  NULL);
+                                  irq[dev], NULL);
         if (err < 0) {
                 printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
                 goto _err;
diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index 2af09996a3d0..9d01c181feca 100644
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -3,7 +3,7 @@
  *  Routines for control of MPU-401 in UART mode
  *
  *  MPU-401 supports UART mode which is not capable generate transmit
- *  interrupts thus output is done via polling. Also, if irq < 0, then
+ *  interrupts thus output is done via polling. Without interrupt,
  *  input is done also via polling. Do not expect good performance.
  *
  *
@@ -374,7 +374,7 @@ snd_mpu401_uart_input_trigger(struct snd_rawmidi_substream *substream, int up)
                         /* first time - flush FIFO */
                         while (max-- > 0)
                                 mpu->read(mpu, MPU401D(mpu));
-                        if (mpu->irq < 0)
+                        if (mpu->info_flags & MPU401_INFO_USE_TIMER)
                                 snd_mpu401_uart_add_timer(mpu, 1);
                 }
                 
@@ -383,7 +383,7 @@ snd_mpu401_uart_input_trigger(struct snd_rawmidi_substream *substream, int up)
                 snd_mpu401_uart_input_read(mpu);
                 spin_unlock_irqrestore(&mpu->input_lock, flags);
         } else {
-                if (mpu->irq < 0)
+                if (mpu->info_flags & MPU401_INFO_USE_TIMER)
                         snd_mpu401_uart_remove_timer(mpu, 1);
                 clear_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode);
         }
@@ -496,7 +496,7 @@ static struct snd_rawmidi_ops snd_mpu401_uart_input =
 static void snd_mpu401_uart_free(struct snd_rawmidi *rmidi)
 {
         struct snd_mpu401 *mpu = rmidi->private_data;
-        if (mpu->irq_flags && mpu->irq >= 0)
+        if (mpu->irq >= 0)
                 free_irq(mpu->irq, (void *) mpu);
         release_and_free_resource(mpu->res);
         kfree(mpu);
@@ -509,8 +509,7 @@ static void snd_mpu401_uart_free(struct snd_rawmidi *rmidi)
  * @hardware: the hardware type, MPU401_HW_XXXX
  * @port: the base address of MPU401 port
  * @info_flags: bitflags MPU401_INFO_XXX
- * @irq: the irq number, -1 if no interrupt for mpu
- * @irq_flags: the irq request flags (SA_XXX), 0 if irq was already reserved.
+ * @irq: the ISA irq number, -1 if not to be allocated
  * @rrawmidi: the pointer to store the new rawmidi instance
  *
  * Creates a new MPU-401 instance.
@@ -525,7 +524,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
                         unsigned short hardware,
                         unsigned long port,
                         unsigned int info_flags,
-                        int irq, int irq_flags,
+                        int irq,
                         struct snd_rawmidi ** rrawmidi)
 {
         struct snd_mpu401 *mpu;
@@ -577,8 +576,8 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
                 mpu->cport = port + 2;
         else
                 mpu->cport = port + 1;
-        if (irq >= 0 && irq_flags) {
-                if (request_irq(irq, snd_mpu401_uart_interrupt, irq_flags,
+        if (irq >= 0) {
+                if (request_irq(irq, snd_mpu401_uart_interrupt, IRQF_DISABLED,
                                 "MPU401 UART", (void *) mpu)) {
                         snd_printk(KERN_ERR "mpu401_uart: "
                                    "unable to grab IRQ %d\n", irq);
@@ -586,9 +585,10 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
                         return -EBUSY;
                 }
         }
+        if (irq < 0 && !(info_flags & MPU401_INFO_IRQ_HOOK))
+                info_flags |= MPU401_INFO_USE_TIMER;
         mpu->info_flags = info_flags;
         mpu->irq = irq;
-        mpu->irq_flags = irq_flags;
         if (card->shortname[0])
                 snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI",
                          card->shortname);
diff --git a/sound/firewire/isight.c b/sound/firewire/isight.c
index 440030818db7..cd094ecaca3b 100644
--- a/sound/firewire/isight.c
+++ b/sound/firewire/isight.c
@@ -51,7 +51,6 @@ struct isight {
         struct fw_unit *unit;
         struct fw_device *device;
         u64 audio_base;
-        struct fw_address_handler iris_handler;
         struct snd_pcm_substream *pcm;
         struct mutex mutex;
         struct iso_packets_buffer buffer;
diff --git a/sound/firewire/speakers.c b/sound/firewire/speakers.c
index 3fc257da180c..cbe6bb9e53b6 100644
--- a/sound/firewire/speakers.c
+++ b/sound/firewire/speakers.c
@@ -778,9 +778,10 @@ static int __devexit fwspk_remove(struct device *dev)
 {
         struct fwspk *fwspk = dev_get_drvdata(dev);
 
-        mutex_lock(&fwspk->mutex);
         amdtp_out_stream_pcm_abort(&fwspk->stream);
         snd_card_disconnect(fwspk->card);
+
+        mutex_lock(&fwspk->mutex);
         fwspk_stop_stream(fwspk);
         mutex_unlock(&fwspk->mutex);
 
@@ -796,8 +797,8 @@ static void fwspk_bus_reset(struct fw_unit *unit)
         fcp_bus_reset(fwspk->unit);
 
         if (cmp_connection_update(&fwspk->connection) < 0) {
-                mutex_lock(&fwspk->mutex);
                 amdtp_out_stream_pcm_abort(&fwspk->stream);
+                mutex_lock(&fwspk->mutex);
                 fwspk_stop_stream(fwspk);
                 mutex_unlock(&fwspk->mutex);
                 return;
diff --git a/sound/isa/ad1816a/ad1816a.c b/sound/isa/ad1816a/ad1816a.c
index 3cb75bc97699..a87a2b566e19 100644
--- a/sound/isa/ad1816a/ad1816a.c
+++ b/sound/isa/ad1816a/ad1816a.c
@@ -204,7 +204,7 @@ static int __devinit snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard
 
         if (mpu_port[dev] > 0) {
                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
-                                        mpu_port[dev], 0, mpu_irq[dev], IRQF_DISABLED,
+                                        mpu_port[dev], 0, mpu_irq[dev],
                                         NULL) < 0)
                         printk(KERN_ERR PFX "no MPU-401 device at 0x%lx.\n", mpu_port[dev]);
         }
diff --git a/sound/isa/als100.c b/sound/isa/als100.c
index 20becc89f6f6..706effd6b3cd 100644
--- a/sound/isa/als100.c
+++ b/sound/isa/als100.c
@@ -256,7 +256,6 @@ static int __devinit snd_card_als100_probe(int dev,
                                         mpu_type,
                                         mpu_port[dev], 0, 
                                         mpu_irq[dev],
-                                        mpu_irq[dev] >= 0 ? IRQF_DISABLED : 0,
                                         NULL) < 0)
                         snd_printk(KERN_ERR PFX "no MPU-401 device at 0x%lx\n", mpu_port[dev]);
         }
diff --git a/sound/isa/azt2320.c b/sound/isa/azt2320.c
index aac8dc15c2fe..b7bdbf307740 100644
--- a/sound/isa/azt2320.c
+++ b/sound/isa/azt2320.c
@@ -234,8 +234,7 @@ static int __devinit snd_card_azt2320_probe(int dev,
         if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_AZT2320,
                                 mpu_port[dev], 0,
-                                mpu_irq[dev], IRQF_DISABLED,
-                                NULL) < 0)
+                                mpu_irq[dev], NULL) < 0)
                         snd_printk(KERN_ERR PFX "no MPU-401 device at 0x%lx\n", mpu_port[dev]);
         }
 
diff --git a/sound/isa/cmi8330.c b/sound/isa/cmi8330.c
index fe79a169acb5..dca69f80305f 100644
--- a/sound/isa/cmi8330.c
+++ b/sound/isa/cmi8330.c
@@ -597,7 +597,7 @@ static int __devinit snd_cmi8330_probe(struct snd_card *card, int dev)
         if (mpuport[dev] != SNDRV_AUTO_PORT) {
                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
                                         mpuport[dev], 0, mpuirq[dev],
-                                        IRQF_DISABLED, NULL) < 0)
+                                        NULL) < 0)
                         printk(KERN_ERR PFX "no MPU-401 device at 0x%lx.\n",
                                 mpuport[dev]);
         }
diff --git a/sound/isa/cs423x/cs4231.c b/sound/isa/cs423x/cs4231.c
index cb9153e75b82..409fa0ad7843 100644
--- a/sound/isa/cs423x/cs4231.c
+++ b/sound/isa/cs423x/cs4231.c
@@ -131,7 +131,6 @@ static int __devinit snd_cs4231_probe(struct device *dev, unsigned int n)
                         mpu_irq[n] = -1;
                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
                                         mpu_port[n], 0, mpu_irq[n],
-                                        mpu_irq[n] >= 0 ? IRQF_DISABLED : 0,
                                         NULL) < 0)
                         dev_warn(dev, "MPU401 not detected\n");
         }
diff --git a/sound/isa/cs423x/cs4236.c b/sound/isa/cs423x/cs4236.c
index 999dc1e0fdbd..0dbde461e6c1 100644
--- a/sound/isa/cs423x/cs4236.c
+++ b/sound/isa/cs423x/cs4236.c
@@ -449,8 +449,7 @@ static int __devinit snd_cs423x_probe(struct snd_card *card, int dev)
                         mpu_irq[dev] = -1;
                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
                                         mpu_port[dev], 0,
-                                        mpu_irq[dev],
-                                        mpu_irq[dev] >= 0 ? IRQF_DISABLED : 0, NULL) < 0)
+                                        mpu_irq[dev], NULL) < 0)
                         printk(KERN_WARNING IDENT ": MPU401 not detected\n");
         }
 
diff --git a/sound/isa/es1688/es1688.c b/sound/isa/es1688/es1688.c
index 0cde8131a575..5493e9e4bcd5 100644
--- a/sound/isa/es1688/es1688.c
+++ b/sound/isa/es1688/es1688.c
@@ -174,7 +174,7 @@ static int __devinit snd_es1688_probe(struct snd_card *card, unsigned int n)
                         chip->mpu_port > 0) {
                 error = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
                                 chip->mpu_port, 0,
-                                mpu_irq[n], IRQF_DISABLED, NULL);
+                                mpu_irq[n], NULL);
                 if (error < 0)
                         return error;
         }
diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
index fb4d6b34bbca..aeee8f8bf5e9 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -2160,8 +2160,8 @@ static int __devinit snd_audiodrive_probe(struct snd_card *card, int dev)
 
         if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES18XX,
-                                          mpu_port[dev], 0,
-                                          irq[dev], 0, &chip->rmidi);
+                                          mpu_port[dev], MPU401_INFO_IRQ_HOOK,
+                                          -1, &chip->rmidi);
                 if (err < 0)
                         return err;
         }
diff --git a/sound/isa/galaxy/galaxy.c b/sound/isa/galaxy/galaxy.c
index ee54df082b9c..e51d3244742a 100644
--- a/sound/isa/galaxy/galaxy.c
+++ b/sound/isa/galaxy/galaxy.c
@@ -585,8 +585,7 @@ static int __devinit snd_galaxy_probe(struct device *dev, unsigned int n)
 
         if (mpu_port[n] >= 0) {
                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
-                                          mpu_port[n], 0, mpu_irq[n],
-                                          IRQF_DISABLED, NULL);
+                                          mpu_port[n], 0, mpu_irq[n], NULL);
                 if (err < 0)
                         goto error;
         }
diff --git a/sound/isa/gus/gusextreme.c b/sound/isa/gus/gusextreme.c
index 008e8e5bfa37..c4733c08b60b 100644
--- a/sound/isa/gus/gusextreme.c
+++ b/sound/isa/gus/gusextreme.c
@@ -317,8 +317,7 @@ static int __devinit snd_gusextreme_probe(struct device *dev, unsigned int n)
 
         if (es1688->mpu_port >= 0x300) {
                 error = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
-                                es1688->mpu_port, 0,
-                                mpu_irq[n], IRQF_DISABLED, NULL);
+                                es1688->mpu_port, 0, mpu_irq[n], NULL);
                 if (error < 0)
                         goto out;
         }
diff --git a/sound/isa/msnd/msnd_pinnacle.c b/sound/isa/msnd/msnd_pinnacle.c
index 91d6023a63e5..0961e2cf20ca 100644
--- a/sound/isa/msnd/msnd_pinnacle.c
+++ b/sound/isa/msnd/msnd_pinnacle.c
@@ -600,7 +600,7 @@ static int __devinit snd_msnd_attach(struct snd_card *card)
                                           mpu_io[0],
                                           MPU401_MODE_INPUT |
                                           MPU401_MODE_OUTPUT,
-                                          mpu_irq[0], IRQF_DISABLED,
+                                          mpu_irq[0],
                                           &chip->rmidi);
                 if (err < 0) {
                         printk(KERN_ERR LOGNAME
diff --git a/sound/isa/opl3sa2.c b/sound/isa/opl3sa2.c
index 9b915e27b5bd..de99f47770bf 100644
--- a/sound/isa/opl3sa2.c
+++ b/sound/isa/opl3sa2.c
@@ -707,8 +707,9 @@ static int __devinit snd_opl3sa2_probe(struct snd_card *card, int dev)
         }
         if (midi_port[dev] >= 0x300 && midi_port[dev] < 0x340) {
                 if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_OPL3SA2,
-                                               midi_port[dev], 0,
-                                               xirq, 0, &chip->rmidi)) < 0)
+                                               midi_port[dev],
+                                               MPU401_INFO_IRQ_HOOK, -1,
+                                               &chip->rmidi)) < 0)
                         return err;
         }
         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
diff --git a/sound/isa/opti9xx/miro.c b/sound/isa/opti9xx/miro.c
index 8c24102d0d93..d94d0f35cb76 100644
--- a/sound/isa/opti9xx/miro.c
+++ b/sound/isa/opti9xx/miro.c
@@ -1377,8 +1377,7 @@ static int __devinit snd_miro_probe(struct snd_card *card)
                 rmidi = NULL;
         else {
                 error = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
-                                mpu_port, 0, miro->mpu_irq, IRQF_DISABLED,
-                                &rmidi);
+                                mpu_port, 0, miro->mpu_irq, &rmidi);
                 if (error < 0)
                         snd_printk(KERN_WARNING "no MPU-401 device at 0x%lx?\n",
                                    mpu_port);
diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index c35dc68930dc..346e12baa98e 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -914,7 +914,7 @@ static int __devinit snd_opti9xx_probe(struct snd_card *card)
                 rmidi = NULL;
         else {
                 error = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
-                                mpu_port, 0, mpu_irq, IRQF_DISABLED, &rmidi);
+                                mpu_port, 0, mpu_irq, &rmidi);
                 if (error)
                         snd_printk(KERN_WARNING "no MPU-401 device at 0x%lx?\n",
                                    mpu_port);
diff --git a/sound/isa/sb/jazz16.c b/sound/isa/sb/jazz16.c
index 8ccbcddf08e1..54e3c2c18060 100644
--- a/sound/isa/sb/jazz16.c
+++ b/sound/isa/sb/jazz16.c
@@ -322,7 +322,6 @@ static int __devinit snd_jazz16_probe(struct device *devptr, unsigned int dev)
                                         MPU401_HW_MPU401,
                                         mpu_port[dev], 0,
                                         mpu_irq[dev],
-                                        mpu_irq[dev] >= 0 ? IRQF_DISABLED : 0,
                                         NULL) < 0)
                         snd_printk(KERN_ERR "no MPU-401 device at 0x%lx\n",
                                         mpu_port[dev]);
diff --git a/sound/isa/sb/sb16.c b/sound/isa/sb/sb16.c
index 4d1c5a300ff8..237f8bd7fbe4 100644
--- a/sound/isa/sb/sb16.c
+++ b/sound/isa/sb/sb16.c
@@ -394,8 +394,9 @@ static int __devinit snd_sb16_probe(struct snd_card *card, int dev)
 
         if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
                 if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_SB,
-                                               chip->mpu_port, 0,
-                                               xirq, 0, &chip->rmidi)) < 0)
+                                               chip->mpu_port,
+                                               MPU401_INFO_IRQ_HOOK, -1,
+                                               &chip->rmidi)) < 0)
                         return err;
                 chip->rmidi_callback = snd_mpu401_uart_interrupt;
         }
diff --git a/sound/isa/sc6000.c b/sound/isa/sc6000.c
index 9a8bbf6dd62a..207c161f100c 100644
--- a/sound/isa/sc6000.c
+++ b/sound/isa/sc6000.c
@@ -658,8 +658,7 @@ static int __devinit snd_sc6000_probe(struct device *devptr, unsigned int dev)
                 if (snd_mpu401_uart_new(card, 0,
                                         MPU401_HW_MPU401,
                                         mpu_port[dev], 0,
-                                        mpu_irq[dev], IRQF_DISABLED,
-                                        NULL) < 0)
+                                        mpu_irq[dev], NULL) < 0)
                         snd_printk(KERN_ERR "no MPU-401 device at 0x%lx ?\n",
                                         mpu_port[dev]);
         }
diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c
index e2d5d2d3ed96..f2379e102b63 100644
--- a/sound/isa/sscape.c
+++ b/sound/isa/sscape.c
@@ -825,8 +825,7 @@ static int __devinit create_mpu401(struct snd_card *card, int devnum,
         int err;
 
         err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port,
-                                  MPU401_INFO_INTEGRATED, irq, IRQF_DISABLED,
-                                  &rawmidi);
+                                  MPU401_INFO_INTEGRATED, irq, &rawmidi);
         if (err == 0) {
                 struct snd_mpu401 *mpu = rawmidi->private_data;
                 mpu->open_input = mpu401_open;
diff --git a/sound/isa/wavefront/wavefront.c b/sound/isa/wavefront/wavefront.c
index 711670e4a425..83f291d89a95 100644
--- a/sound/isa/wavefront/wavefront.c
+++ b/sound/isa/wavefront/wavefront.c
@@ -449,8 +449,7 @@ snd_wavefront_probe (struct snd_card *card, int dev)
         if (cs4232_mpu_port[dev] > 0 && cs4232_mpu_port[dev] != SNDRV_AUTO_PORT) {
                 err = snd_mpu401_uart_new(card, midi_dev, MPU401_HW_CS4232,
                                           cs4232_mpu_port[dev], 0,
-                                          cs4232_mpu_irq[dev], IRQF_DISABLED,
-                                          NULL);
+                                          cs4232_mpu_irq[dev], NULL);
                 if (err < 0) {
                         snd_printk (KERN_ERR "can't allocate CS4232 MPU-401 device\n");
                         return err;
diff --git a/sound/oss/sound_timer.c b/sound/oss/sound_timer.c
index 48cda6c4c257..8021c85f076d 100644
--- a/sound/oss/sound_timer.c
+++ b/sound/oss/sound_timer.c
@@ -320,7 +320,7 @@ void  sound_timer_init(struct sound_lowlev_timer *t, char *name)
         n = sound_alloc_timerdev();
         if (n == -1)
                 n = 0;          /* Overwrite the system timer */
-        strcpy(sound_timer.info.name, name);
+        strlcpy(sound_timer.info.name, name, sizeof(sound_timer.info.name));
         sound_timer_devs[n] = &sound_timer;
 }
 EXPORT_SYMBOL(sound_timer_init);
diff --git a/sound/pci/als4000.c b/sound/pci/als4000.c
index a9c1af33f276..04628696eb08 100644
--- a/sound/pci/als4000.c
+++ b/sound/pci/als4000.c
@@ -931,8 +931,9 @@ static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 
         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
                                         iobase + ALS4K_IOB_30_MIDI_DATA,
-                                        MPU401_INFO_INTEGRATED,
-                                        pci->irq, 0, &chip->rmidi)) < 0) {
+                                        MPU401_INFO_INTEGRATED |
+                                        MPU401_INFO_IRQ_HOOK,
+                                        -1, &chip->rmidi)) < 0) {
                 printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n",
                                 iobase + ALS4K_IOB_30_MIDI_DATA);
                 goto out_err;
diff --git a/sound/pci/au88x0/au88x0_mpu401.c b/sound/pci/au88x0/au88x0_mpu401.c
index 0dc8d259d1ed..e6c6a0febb75 100644
--- a/sound/pci/au88x0/au88x0_mpu401.c
+++ b/sound/pci/au88x0/au88x0_mpu401.c
@@ -84,7 +84,7 @@ static int __devinit snd_vortex_midi(vortex_t * vortex)
 #ifdef VORTEX_MPU401_LEGACY
         if ((temp =
              snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330,
-                                 0, 0, 0, &rmidi)) != 0) {
+                                 MPU401_INFO_IRQ_HOOK, -1, &rmidi)) != 0) {
                 hwwrite(vortex->mmio, VORTEX_CTRL,
                         (hwread(vortex->mmio, VORTEX_CTRL) &
                          ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
@@ -94,8 +94,8 @@ static int __devinit snd_vortex_midi(vortex_t * vortex)
         port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);
         if ((temp =
              snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,
-                                 MPU401_INFO_INTEGRATED | MPU401_INFO_MMIO,
-                                 0, 0, &rmidi)) != 0) {
+                                 MPU401_INFO_INTEGRATED | MPU401_INFO_MMIO |
+                                 MPU401_INFO_IRQ_HOOK, -1, &rmidi)) != 0) {
                 hwwrite(vortex->mmio, VORTEX_CTRL,
                         (hwread(vortex->mmio, VORTEX_CTRL) &
                          ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
diff --git a/sound/pci/azt3328.c b/sound/pci/azt3328.c
index 579fc0dce128..d24fe425e87f 100644
--- a/sound/pci/azt3328.c
+++ b/sound/pci/azt3328.c
@@ -2652,8 +2652,9 @@ snd_azf3328_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
            since our hardware ought to be similar, thus use same ID. */
         err = snd_mpu401_uart_new(
                 card, 0,
-                MPU401_HW_AZT2320, chip->mpu_io, MPU401_INFO_INTEGRATED,
-                pci->irq, 0, &chip->rmidi
+                MPU401_HW_AZT2320, chip->mpu_io,
+                MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
+                -1, &chip->rmidi
         );
         if (err < 0) {
                 snd_printk(KERN_ERR "azf3328: no MPU-401 device at 0x%lx?\n",
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index 9cf99fb7eb9c..da9c73211eca 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -3228,8 +3228,9 @@ static int __devinit snd_cmipci_create(struct snd_card *card, struct pci_dev *pc
                 if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
                                                iomidi,
                                                (integrated_midi ?
-                                                MPU401_INFO_INTEGRATED : 0),
-                                               cm->irq, 0, &cm->rmidi)) < 0) {
+                                                MPU401_INFO_INTEGRATED : 0) |
+                                               MPU401_INFO_IRQ_HOOK,
+                                               -1, &cm->rmidi)) < 0) {
                         printk(KERN_ERR "cmipci: no UART401 device at 0x%lx\n", iomidi);
                 }
         }
diff --git a/sound/pci/ctxfi/ctpcm.c b/sound/pci/ctxfi/ctpcm.c
index 457d21189b0d..2c8622617c8c 100644
--- a/sound/pci/ctxfi/ctpcm.c
+++ b/sound/pci/ctxfi/ctpcm.c
@@ -404,7 +404,7 @@ int ct_alsa_pcm_create(struct ct_atc *atc,
         int err;
         int playback_count, capture_count;
 
-        playback_count = (IEC958 == device) ? 1 : 8;
+        playback_count = (IEC958 == device) ? 1 : 256;
         capture_count = (FRONT == device) ? 1 : 0;
         err = snd_pcm_new(atc->card, "ctxfi", device,
                           playback_count, capture_count, &pcm);
diff --git a/sound/pci/ctxfi/ctsrc.c b/sound/pci/ctxfi/ctsrc.c
index c749fa720889..e134b3a5780d 100644
--- a/sound/pci/ctxfi/ctsrc.c
+++ b/sound/pci/ctxfi/ctsrc.c
@@ -20,7 +20,7 @@
 #include "cthardware.h"
 #include <linux/slab.h>
 
-#define SRC_RESOURCE_NUM        64
+#define SRC_RESOURCE_NUM        256
 #define SRCIMP_RESOURCE_NUM     256
 
 static unsigned int conj_mask;
diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h
index b23adfca4de6..e6da60eb19ce 100644
--- a/sound/pci/ctxfi/ctvmem.h
+++ b/sound/pci/ctxfi/ctvmem.h
@@ -18,7 +18,7 @@
 #ifndef CTVMEM_H
 #define CTVMEM_H
 
-#define CT_PTP_NUM      1       /* num of device page table pages */
+#define CT_PTP_NUM      4       /* num of device page table pages */
 
 #include <linux/mutex.h>
 #include <linux/list.h>
diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c
index 622bace148e3..e22b8e2bbd88 100644
--- a/sound/pci/emu10k1/emupcm.c
+++ b/sound/pci/emu10k1/emupcm.c
@@ -1146,6 +1146,11 @@ static int snd_emu10k1_playback_open(struct snd_pcm_substream *substream)
                 kfree(epcm);
                 return err;
         }
+        err = snd_pcm_hw_rule_noresample(runtime, 48000);
+        if (err < 0) {
+                kfree(epcm);
+                return err;
+        }
         mix = &emu->pcm_mixer[substream->number];
         for (i = 0; i < 4; i++)
                 mix->send_routing[0][i] = mix->send_routing[1][i] = mix->send_routing[2][i] = i;
diff --git a/sound/pci/es1938.c b/sound/pci/es1938.c
index 26a5a2f25d4b..718a2643474e 100644
--- a/sound/pci/es1938.c
+++ b/sound/pci/es1938.c
@@ -1854,8 +1854,9 @@ static int __devinit snd_es1938_probe(struct pci_dev *pci,
                 }
         }
         if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
-                                chip->mpu_port, MPU401_INFO_INTEGRATED,
-                                chip->irq, 0, &chip->rmidi) < 0) {
+                                chip->mpu_port,
+                                MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
+                                -1, &chip->rmidi) < 0) {
                 printk(KERN_ERR "es1938: unable to initialize MPU-401\n");
         } else {
                 // this line is vital for MIDI interrupt handling on ess-solo1
diff --git a/sound/pci/es1968.c b/sound/pci/es1968.c
index 99ea9320c6b5..407e4abc4356 100644
--- a/sound/pci/es1968.c
+++ b/sound/pci/es1968.c
@@ -2843,8 +2843,9 @@ static int __devinit snd_es1968_probe(struct pci_dev *pci,
         if (enable_mpu[dev]) {
                 if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
                                                chip->io_port + ESM_MPU401_PORT,
-                                               MPU401_INFO_INTEGRATED,
-                                               chip->irq, 0, &chip->rmidi)) < 0) {
+                                               MPU401_INFO_INTEGRATED |
+                                               MPU401_INFO_IRQ_HOOK,
+                                               -1, &chip->rmidi)) < 0) {
                         printk(KERN_WARNING "es1968: skipping MPU-401 MIDI support..\n");
                 }
         }
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 32b02d906703..136f7232bb7c 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -729,11 +729,14 @@ static struct snd_fm801_tea575x_gpio snd_fm801_tea575x_gpios[] = {
         { .data = 2, .clk = 0, .wren = 1, .most = 3, .name = "SF64-PCR" },
 };
 
+#define get_tea575x_gpio(chip) \
+        (&snd_fm801_tea575x_gpios[((chip)->tea575x_tuner & TUNER_TYPE_MASK) - 1])
+
 static void snd_fm801_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
 {
         struct fm801 *chip = tea->private_data;
         unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
-        struct snd_fm801_tea575x_gpio gpio = snd_fm801_tea575x_gpios[(chip->tea575x_tuner & TUNER_TYPE_MASK) - 1];
+        struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
 
         reg &= ~(FM801_GPIO_GP(gpio.data) |
                  FM801_GPIO_GP(gpio.clk) |
@@ -751,7 +754,7 @@ static u8 snd_fm801_tea575x_get_pins(struct snd_tea575x *tea)
 {
         struct fm801 *chip = tea->private_data;
         unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
-        struct snd_fm801_tea575x_gpio gpio = snd_fm801_tea575x_gpios[(chip->tea575x_tuner & TUNER_TYPE_MASK) - 1];
+        struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
 
         return  (reg & FM801_GPIO_GP(gpio.data)) ? TEA575X_DATA : 0 |
                 (reg & FM801_GPIO_GP(gpio.most)) ? TEA575X_MOST : 0;
@@ -761,7 +764,7 @@ static void snd_fm801_tea575x_set_direction(struct snd_tea575x *tea, bool output
 {
         struct fm801 *chip = tea->private_data;
         unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
-        struct snd_fm801_tea575x_gpio gpio = snd_fm801_tea575x_gpios[(chip->tea575x_tuner & TUNER_TYPE_MASK) - 1];
+        struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
 
         /* use GPIO lines and set write enable bit */
         reg |= FM801_GPIO_GS(gpio.data) |
@@ -1246,7 +1249,7 @@ static int __devinit snd_fm801_create(struct snd_card *card,
                         chip->tea575x_tuner = tea575x_tuner;
                         if (!snd_tea575x_init(&chip->tea)) {
                                 snd_printk(KERN_INFO "detected TEA575x radio type %s\n",
-                                        snd_fm801_tea575x_gpios[tea575x_tuner - 1].name);
+                                           get_tea575x_gpio(chip)->name);
                                 break;
                         }
                 }
@@ -1256,9 +1259,7 @@ static int __devinit snd_fm801_create(struct snd_card *card,
                 }
         }
         if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
-                strlcpy(chip->tea.card,
-                        snd_fm801_tea575x_gpios[(tea575x_tuner &
-                                                 TUNER_TYPE_MASK) - 1].name,
+                strlcpy(chip->tea.card, get_tea575x_gpio(chip)->name,
                         sizeof(chip->tea.card));
         }
 #endif
@@ -1311,8 +1312,9 @@ static int __devinit snd_card_fm801_probe(struct pci_dev *pci,
         }
         if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
                                        FM801_REG(chip, MPU401_DATA),
-                                       MPU401_INFO_INTEGRATED,
-                                       chip->irq, 0, &chip->rmidi)) < 0) {
+                                       MPU401_INFO_INTEGRATED |
+                                       MPU401_INFO_IRQ_HOOK,
+                                       -1, &chip->rmidi)) < 0) {
                 snd_card_free(card);
                 return err;
         }
diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c
index 0ccc0eb75775..8531b983f3af 100644
--- a/sound/pci/ice1712/ice1712.c
+++ b/sound/pci/ice1712/ice1712.c
@@ -2748,8 +2748,9 @@ static int __devinit snd_ice1712_probe(struct pci_dev *pci,
         if (!c->no_mpu401) {
                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_ICE1712,
                         ICEREG(ice, MPU1_CTRL),
-                        (c->mpu401_1_info_flags | MPU401_INFO_INTEGRATED),
-                        ice->irq, 0, &ice->rmidi[0]);
+                        c->mpu401_1_info_flags |
+                        MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
+                        -1, &ice->rmidi[0]);
                 if (err < 0) {
                         snd_card_free(card);
                         return err;
@@ -2764,8 +2765,9 @@ static int __devinit snd_ice1712_probe(struct pci_dev *pci,
                         /*  2nd port used  */
                         err = snd_mpu401_uart_new(card, 1, MPU401_HW_ICE1712,
                                 ICEREG(ice, MPU2_CTRL),
-                                (c->mpu401_2_info_flags | MPU401_INFO_INTEGRATED),
-                                ice->irq, 0, &ice->rmidi[1]);
+                                c->mpu401_2_info_flags |
+                                MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
+                                -1, &ice->rmidi[1]);
 
                         if (err < 0) {
                                 snd_card_free(card);
diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c
index 0378126e6272..2fd4bf2d6653 100644
--- a/sound/pci/maestro3.c
+++ b/sound/pci/maestro3.c
@@ -2820,8 +2820,8 @@ snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
         /* TODO enable MIDI IRQ and I/O */
         err = snd_mpu401_uart_new(chip->card, 0, MPU401_HW_MPU401,
                                   chip->iobase + MPU401_DATA_PORT,
-                                  MPU401_INFO_INTEGRATED,
-                                  chip->irq, 0, &chip->rmidi);
+                                  MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
+                                  -1, &chip->rmidi);
         if (err < 0)
                 printk(KERN_WARNING "maestro3: no MIDI support.\n");
 #endif
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index 82311fcb86f6..53e5508abcbf 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -678,15 +678,15 @@ int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
                 goto err_card;
 
         if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
-                unsigned int info_flags = MPU401_INFO_INTEGRATED;
+                unsigned int info_flags =
+                                MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK;
                 if (chip->model.device_config & MIDI_OUTPUT)
                         info_flags |= MPU401_INFO_OUTPUT;
                 if (chip->model.device_config & MIDI_INPUT)
                         info_flags |= MPU401_INFO_INPUT;
                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
                                           chip->addr + OXYGEN_MPU401,
-                                          info_flags, 0, 0,
-                                          &chip->midi);
+                                          info_flags, -1, &chip->midi);
                 if (err < 0)
                         goto err_card;
         }
diff --git a/sound/pci/oxygen/xonar_pcm179x.c b/sound/pci/oxygen/xonar_pcm179x.c
index 32d096c98f5b..8433aa7c3d75 100644
--- a/sound/pci/oxygen/xonar_pcm179x.c
+++ b/sound/pci/oxygen/xonar_pcm179x.c
@@ -1074,6 +1074,7 @@ static const struct oxygen_model model_xonar_st = {
         .device_config = PLAYBACK_0_TO_I2S |
                          PLAYBACK_1_TO_SPDIF |
                          CAPTURE_0_FROM_I2S_2 |
+                         CAPTURE_1_FROM_SPDIF |
                          AC97_FMIC_SWITCH,
         .dac_channels_pcm = 2,
         .dac_channels_mixer = 2,
diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c
index e34ae14908b3..88cc776aa38b 100644
--- a/sound/pci/riptide/riptide.c
+++ b/sound/pci/riptide/riptide.c
@@ -2109,7 +2109,7 @@ snd_card_riptide_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
                 val = mpu_port[dev];
                 pci_write_config_word(chip->pci, PCI_EXT_MPU_Base, val);
                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_RIPTIDE,
-                                          val, 0, chip->irq, 0,
+                                          val, MPU401_INFO_IRQ_HOOK, -1,
                                           &chip->rmidi);
                 if (err < 0)
                         snd_printk(KERN_WARNING
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 493e3946756f..6e2f7ef7ddb1 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -1241,10 +1241,30 @@ static int hdspm_external_sample_rate(struct hdspm *hdspm)
         return rate;
 }
 
+/* return latency in samples per period */
+static int hdspm_get_latency(struct hdspm *hdspm)
+{
+        int n;
+
+        n = hdspm_decode_latency(hdspm->control_register);
+
+        /* Special case for new RME cards with 32 samples period size.
+         * The three latency bits in the control register
+         * (HDSP_LatencyMask) encode latency values of 64 samples as
+         * 0, 128 samples as 1 ... 4096 samples as 6. For old cards, 7
+         * denotes 8192 samples, but on new cards like RayDAT or AIO,
+         * it corresponds to 32 samples.
+         */
+        if ((7 == n) && (RayDAT == hdspm->io_type || AIO == hdspm->io_type))
+                n = -1;
+
+        return 1 << (n + 6);
+}
+
 /* Latency function */
 static inline void hdspm_compute_period_size(struct hdspm *hdspm)
 {
-        hdspm->period_bytes = 1 << ((hdspm_decode_latency(hdspm->control_register) + 8));
+        hdspm->period_bytes = 4 * hdspm_get_latency(hdspm);
 }
 
 
@@ -1303,12 +1323,27 @@ static int hdspm_set_interrupt_interval(struct hdspm *s, unsigned int frames)
 
         spin_lock_irq(&s->lock);
 
-        frames >>= 7;
-        n = 0;
-        while (frames) {
-                n++;
-                frames >>= 1;
+        if (32 == frames) {
+                /* Special case for new RME cards like RayDAT/AIO which
+                 * support period sizes of 32 samples. Since latency is
+                 * encoded in the three bits of HDSP_LatencyMask, we can only
+                 * have values from 0 .. 7. While 0 still means 64 samples and
+                 * 6 represents 4096 samples on all cards, 7 represents 8192
+                 * on older cards and 32 samples on new cards.
+                 *
+                 * In other words, period size in samples is calculated by
+                 * 2^(n+6) with n ranging from 0 .. 7.
+                 */
+                n = 7;
+        } else {
+                frames >>= 7;
+                n = 0;
+                while (frames) {
+                        n++;
+                        frames >>= 1;
+                }
         }
+
         s->control_register &= ~HDSPM_LatencyMask;
         s->control_register |= hdspm_encode_latency(n);
 
@@ -4801,8 +4836,7 @@ snd_hdspm_proc_read_madi(struct snd_info_entry * entry,
 
         snd_iprintf(buffer, "--- Settings ---\n");
 
-        x = 1 << (6 + hdspm_decode_latency(hdspm->control_register &
-                                                        HDSPM_LatencyMask));
+        x = hdspm_get_latency(hdspm);
 
         snd_iprintf(buffer,
                 "Size (Latency): %d samples (2 periods of %lu bytes)\n",
@@ -4965,8 +4999,7 @@ snd_hdspm_proc_read_aes32(struct snd_info_entry * entry,
 
         snd_iprintf(buffer, "--- Settings ---\n");
 
-        x = 1 << (6 + hdspm_decode_latency(hdspm->control_register &
-                                HDSPM_LatencyMask));
+        x = hdspm_get_latency(hdspm);
 
         snd_iprintf(buffer,
                     "Size (Latency): %d samples (2 periods of %lu bytes)\n",
@@ -5672,19 +5705,6 @@ static int snd_hdspm_prepare(struct snd_pcm_substream *substream)
         return 0;
 }
 
-static unsigned int period_sizes_old[] = {
-        64, 128, 256, 512, 1024, 2048, 4096
-};
-
-static unsigned int period_sizes_new[] = {
-        32, 64, 128, 256, 512, 1024, 2048, 4096
-};
-
-/* RayDAT and AIO always have a buffer of 16384 samples per channel */
-static unsigned int raydat_aio_buffer_sizes[] = {
-        16384
-};
-
 static struct snd_pcm_hardware snd_hdspm_playback_subinfo = {
         .info = (SNDRV_PCM_INFO_MMAP |
                  SNDRV_PCM_INFO_MMAP_VALID |
@@ -5703,8 +5723,8 @@ static struct snd_pcm_hardware snd_hdspm_playback_subinfo = {
         .channels_max = HDSPM_MAX_CHANNELS,
         .buffer_bytes_max =
             HDSPM_CHANNEL_BUFFER_BYTES * HDSPM_MAX_CHANNELS,
-        .period_bytes_min = (64 * 4),
-        .period_bytes_max = (4096 * 4) * HDSPM_MAX_CHANNELS,
+        .period_bytes_min = (32 * 4),
+        .period_bytes_max = (8192 * 4) * HDSPM_MAX_CHANNELS,
         .periods_min = 2,
         .periods_max = 512,
         .fifo_size = 0
@@ -5728,31 +5748,13 @@ static struct snd_pcm_hardware snd_hdspm_capture_subinfo = {
         .channels_max = HDSPM_MAX_CHANNELS,
         .buffer_bytes_max =
             HDSPM_CHANNEL_BUFFER_BYTES * HDSPM_MAX_CHANNELS,
-        .period_bytes_min = (64 * 4),
-        .period_bytes_max = (4096 * 4) * HDSPM_MAX_CHANNELS,
+        .period_bytes_min = (32 * 4),
+        .period_bytes_max = (8192 * 4) * HDSPM_MAX_CHANNELS,
         .periods_min = 2,
         .periods_max = 512,
         .fifo_size = 0
 };
 
-static struct snd_pcm_hw_constraint_list hw_constraints_period_sizes_old = {
-        .count = ARRAY_SIZE(period_sizes_old),
-        .list = period_sizes_old,
-        .mask = 0
-};
-
-static struct snd_pcm_hw_constraint_list hw_constraints_period_sizes_new = {
-        .count = ARRAY_SIZE(period_sizes_new),
-        .list = period_sizes_new,
-        .mask = 0
-};
-
-static struct snd_pcm_hw_constraint_list hw_constraints_raydat_io_buffer = {
-        .count = ARRAY_SIZE(raydat_aio_buffer_sizes),
-        .list = raydat_aio_buffer_sizes,
-        .mask = 0
-};
-
 static int snd_hdspm_hw_rule_in_channels_rate(struct snd_pcm_hw_params *params,
                                            struct snd_pcm_hw_rule *rule)
 {
@@ -5953,26 +5955,29 @@ static int snd_hdspm_playback_open(struct snd_pcm_substream *substream)
         spin_unlock_irq(&hdspm->lock);
 
         snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+        snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
 
         switch (hdspm->io_type) {
         case AIO:
         case RayDAT:
-                snd_pcm_hw_constraint_list(runtime, 0,
-                                SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-                                &hw_constraints_period_sizes_new);
-                snd_pcm_hw_constraint_list(runtime, 0,
-                                SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
-                                &hw_constraints_raydat_io_buffer);
-
+                snd_pcm_hw_constraint_minmax(runtime,
+                                             SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+                                             32, 4096);
+                /* RayDAT & AIO have a fixed buffer of 16384 samples per channel */
+                snd_pcm_hw_constraint_minmax(runtime,
+                                             SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+                                             16384, 16384);
                 break;
 
         default:
-                snd_pcm_hw_constraint_list(runtime, 0,
-                                SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-                                &hw_constraints_period_sizes_old);
+                snd_pcm_hw_constraint_minmax(runtime,
+                                             SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+                                             64, 8192);
+                break;
         }
 
         if (AES32 == hdspm->io_type) {
+                runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
                 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                 &hdspm_hw_constraints_aes32_sample_rates);
         } else {
@@ -6025,24 +6030,28 @@ static int snd_hdspm_capture_open(struct snd_pcm_substream *substream)
         spin_unlock_irq(&hdspm->lock);
 
         snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+        snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
+
         switch (hdspm->io_type) {
         case AIO:
         case RayDAT:
-          snd_pcm_hw_constraint_list(runtime, 0,
-                                     SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-                                     &hw_constraints_period_sizes_new);
-          snd_pcm_hw_constraint_list(runtime, 0,
-                                     SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
-                                     &hw_constraints_raydat_io_buffer);
-          break;
+                snd_pcm_hw_constraint_minmax(runtime,
+                                             SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+                                             32, 4096);
+                snd_pcm_hw_constraint_minmax(runtime,
+                                             SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+                                             16384, 16384);
+                break;
 
         default:
-          snd_pcm_hw_constraint_list(runtime, 0,
-                                     SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-                                     &hw_constraints_period_sizes_old);
+                snd_pcm_hw_constraint_minmax(runtime,
+                                             SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+                                             64, 8192);
+                break;
         }
 
         if (AES32 == hdspm->io_type) {
+                runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
                 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                 &hdspm_hw_constraints_aes32_sample_rates);
         } else {
@@ -6088,7 +6097,7 @@ static inline int copy_u32_le(void __user *dest, void __iomem *src)
 }
 
 static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
-                unsigned int cmd, unsigned long __user arg)
+                unsigned int cmd, unsigned long arg)
 {
         void __user *argp = (void __user *)arg;
         struct hdspm *hdspm = hw->private_data;
@@ -6213,11 +6222,13 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
                 info.line_out = hdspm_line_out(hdspm);
                 info.passthru = 0;
                 spin_unlock_irq(&hdspm->lock);
-                if (copy_to_user((void __user *) arg, &info, sizeof(info)))
+                if (copy_to_user(argp, &info, sizeof(info)))
                         return -EFAULT;
                 break;
 
         case SNDRV_HDSPM_IOCTL_GET_STATUS:
+                memset(&status, 0, sizeof(status));
+
                 status.card_type = hdspm->io_type;
 
                 status.autosync_source = hdspm_autosync_ref(hdspm);
@@ -6250,13 +6261,15 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
                         break;
                 }
 
-                if (copy_to_user((void __user *) arg, &status, sizeof(status)))
+                if (copy_to_user(argp, &status, sizeof(status)))
                         return -EFAULT;
 
 
                 break;
 
         case SNDRV_HDSPM_IOCTL_GET_VERSION:
+                memset(&hdspm_version, 0, sizeof(hdspm_version));
+
                 hdspm_version.card_type = hdspm->io_type;
                 strncpy(hdspm_version.cardname, hdspm->card_name,
                                 sizeof(hdspm_version.cardname));
@@ -6267,13 +6280,13 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
                 if (hdspm->tco)
                         hdspm_version.addons |= HDSPM_ADDON_TCO;
 
-                if (copy_to_user((void __user *) arg, &hdspm_version,
+                if (copy_to_user(argp, &hdspm_version,
                                         sizeof(hdspm_version)))
                         return -EFAULT;
                 break;
 
         case SNDRV_HDSPM_IOCTL_GET_MIXER:
-                if (copy_from_user(&mixer, (void __user *)arg, sizeof(mixer)))
+                if (copy_from_user(&mixer, argp, sizeof(mixer)))
                         return -EFAULT;
                 if (copy_to_user((void __user *)mixer.mixer, hdspm->mixer,
                                         sizeof(struct hdspm_mixer)))
diff --git a/sound/pci/sonicvibes.c b/sound/pci/sonicvibes.c
index 2571a67b389a..c5008166cf1f 100644
--- a/sound/pci/sonicvibes.c
+++ b/sound/pci/sonicvibes.c
@@ -1493,9 +1493,10 @@ static int __devinit snd_sonic_probe(struct pci_dev *pci,
                 return err;
         }
         if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_SONICVIBES,
-                                       sonic->midi_port, MPU401_INFO_INTEGRATED,
-                                       sonic->irq, 0,
-                                       &midi_uart)) < 0) {
+                                       sonic->midi_port,
+                                       MPU401_INFO_INTEGRATED |
+                                       MPU401_INFO_IRQ_HOOK,
+                                       -1, &midi_uart)) < 0) {
                 snd_card_free(card);
                 return err;
         }
diff --git a/sound/pci/trident/trident.c b/sound/pci/trident/trident.c
index d8a128f6fc02..5e707effdc7c 100644
--- a/sound/pci/trident/trident.c
+++ b/sound/pci/trident/trident.c
@@ -148,8 +148,9 @@ static int __devinit snd_trident_probe(struct pci_dev *pci,
         if (trident->device != TRIDENT_DEVICE_ID_SI7018 &&
             (err = snd_mpu401_uart_new(card, 0, MPU401_HW_TRID4DWAVE,
                                        trident->midi_port,
-                                       MPU401_INFO_INTEGRATED,
-                                       trident->irq, 0, &trident->rmidi)) < 0) {
+                                       MPU401_INFO_INTEGRATED |
+                                       MPU401_INFO_IRQ_HOOK,
+                                       -1, &trident->rmidi)) < 0) {
                 snd_card_free(card);
                 return err;
         }
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index f03fd620a2a0..c3656fffdb50 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -1175,6 +1175,7 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
         struct snd_pcm_runtime *runtime = substream->runtime;
         int err;
         struct via_rate_lock *ratep;
+        bool use_src = false;
 
         runtime->hw = snd_via82xx_hw;
         
@@ -1196,6 +1197,7 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
                                      SNDRV_PCM_RATE_8000_48000);
                 runtime->hw.rate_min = 8000;
                 runtime->hw.rate_max = 48000;
+                use_src = true;
         } else if (! ratep->rate) {
                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
                 runtime->hw.rates = chip->ac97->rates[idx];
@@ -1212,6 +1214,12 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
                 return err;
 
+        if (use_src) {
+                err = snd_pcm_hw_rule_noresample(runtime, 48000);
+                if (err < 0)
+                        return err;
+        }
+
         runtime->private_data = viadev;
         viadev->substream = substream;
 
@@ -2068,8 +2076,9 @@ static int __devinit snd_via686_init_misc(struct via82xx *chip)
         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
         if (chip->mpu_res) {
                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
-                                        mpu_port, MPU401_INFO_INTEGRATED,
-                                        chip->irq, 0, &chip->rmidi) < 0) {
+                                        mpu_port, MPU401_INFO_INTEGRATED |
+                                        MPU401_INFO_IRQ_HOOK, -1,
+                                        &chip->rmidi) < 0) {
                         printk(KERN_WARNING "unable to initialize MPU-401"
                                " at 0x%lx, skipping\n", mpu_port);
                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
diff --git a/sound/pci/ymfpci/ymfpci.c b/sound/pci/ymfpci/ymfpci.c
index 511d57653124..3253b04da184 100644
--- a/sound/pci/ymfpci/ymfpci.c
+++ b/sound/pci/ymfpci/ymfpci.c
@@ -305,8 +305,9 @@ static int __devinit snd_card_ymfpci_probe(struct pci_dev *pci,
         if (chip->mpu_res) {
                 if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_YMFPCI,
                                                mpu_port[dev],
-                                               MPU401_INFO_INTEGRATED,
-                                               pci->irq, 0, &chip->rawmidi)) < 0) {
+                                               MPU401_INFO_INTEGRATED |
+                                               MPU401_INFO_IRQ_HOOK,
+                                               -1, &chip->rawmidi)) < 0) {
                         printk(KERN_WARNING "ymfpci: cannot initialize MPU401 at 0x%lx, skipping...\n", mpu_port[dev]);
                         legacy_ctrl &= ~YMFPCI_LEGACY_MIEN; /* disable MPU401 irq */
                         pci_write_config_word(pci, PCIR_DSXG_LEGACY, legacy_ctrl);
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index f3260e658b8a..66ea71b2a70d 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -897,6 +897,18 @@ static int snd_ymfpci_playback_open_1(struct snd_pcm_substream *substream)
         struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
         struct snd_pcm_runtime *runtime = substream->runtime;
         struct snd_ymfpci_pcm *ypcm;
+        int err;
+
+        runtime->hw = snd_ymfpci_playback;
+        /* FIXME? True value is 256/48 = 5.33333 ms */
+        err = snd_pcm_hw_constraint_minmax(runtime,
+                                           SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+                                           5334, UINT_MAX);
+        if (err < 0)
+                return err;
+        err = snd_pcm_hw_rule_noresample(runtime, 48000);
+        if (err < 0)
+                return err;
 
         ypcm = kzalloc(sizeof(*ypcm), GFP_KERNEL);
         if (ypcm == NULL)
@@ -904,11 +916,8 @@ static int snd_ymfpci_playback_open_1(struct snd_pcm_substream *substream)
         ypcm->chip = chip;
         ypcm->type = PLAYBACK_VOICE;
         ypcm->substream = substream;
-        runtime->hw = snd_ymfpci_playback;
         runtime->private_data = ypcm;
         runtime->private_free = snd_ymfpci_pcm_free_substream;
-        /* FIXME? True value is 256/48 = 5.33333 ms */
-        snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 5333, UINT_MAX);
         return 0;
 }
 
@@ -1013,6 +1022,18 @@ static int snd_ymfpci_capture_open(struct snd_pcm_substream *substream,
         struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
         struct snd_pcm_runtime *runtime = substream->runtime;
         struct snd_ymfpci_pcm *ypcm;
+        int err;
+
+        runtime->hw = snd_ymfpci_capture;
+        /* FIXME? True value is 256/48 = 5.33333 ms */
+        err = snd_pcm_hw_constraint_minmax(runtime,
+                                           SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+                                           5334, UINT_MAX);
+        if (err < 0)
+                return err;
+        err = snd_pcm_hw_rule_noresample(runtime, 48000);
+        if (err < 0)
+                return err;
 
         ypcm = kzalloc(sizeof(*ypcm), GFP_KERNEL);
         if (ypcm == NULL)
@@ -1022,9 +1043,6 @@ static int snd_ymfpci_capture_open(struct snd_pcm_substream *substream,
         ypcm->substream = substream;    
         ypcm->capture_bank_number = capture_bank_number;
         chip->capture_substream[capture_bank_number] = substream;
-        runtime->hw = snd_ymfpci_capture;
-        /* FIXME? True value is 256/48 = 5.33333 ms */
-        snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 5333, UINT_MAX);
         runtime->private_data = ypcm;
         runtime->private_free = snd_ymfpci_pcm_free_substream;
         snd_ymfpci_hw_start(chip);
@@ -1615,7 +1633,7 @@ YMFPCI_DOUBLE("ADC Playback Volume", 0, YDSXGR_PRIADCOUTVOL),
 YMFPCI_DOUBLE("ADC Capture Volume", 0, YDSXGR_PRIADCLOOPVOL),
 YMFPCI_DOUBLE("ADC Playback Volume", 1, YDSXGR_SECADCOUTVOL),
 YMFPCI_DOUBLE("ADC Capture Volume", 1, YDSXGR_SECADCLOOPVOL),
-YMFPCI_DOUBLE("FM Legacy Volume", 0, YDSXGR_LEGACYOUTVOL),
+YMFPCI_DOUBLE("FM Legacy Playback Volume", 0, YDSXGR_LEGACYOUTVOL),
 YMFPCI_DOUBLE(SNDRV_CTL_NAME_IEC958("AC97 ", PLAYBACK,VOLUME), 0, YDSXGR_ZVOUTVOL),
 YMFPCI_DOUBLE(SNDRV_CTL_NAME_IEC958("", CAPTURE,VOLUME), 0, YDSXGR_ZVLOOPVOL),
 YMFPCI_DOUBLE(SNDRV_CTL_NAME_IEC958("AC97 ",PLAYBACK,VOLUME), 1, YDSXGR_SPDIFOUTVOL),
diff --git a/sound/ppc/keywest.c b/sound/ppc/keywest.c
index 8f064c7ce745..4080becf4cef 100644
--- a/sound/ppc/keywest.c
+++ b/sound/ppc/keywest.c
@@ -82,7 +82,6 @@ static int keywest_attach_adapter(struct i2c_adapter *adapter)
 
 static int keywest_remove(struct i2c_client *client)
 {
-        i2c_set_clientdata(client, NULL);
         if (! keywest_ctx)
                 return 0;
         if (client == keywest_ctx->client)
diff --git a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c
index 1e3ae3327dd3..07bcfe4d18a7 100644
--- a/sound/usb/6fire/firmware.c
+++ b/sound/usb/6fire/firmware.c
@@ -16,6 +16,7 @@
 
 #include <linux/firmware.h>
 #include <linux/bitrev.h>
+#include <linux/kernel.h>
 
 #include "firmware.h"
 #include "chip.h"
@@ -59,21 +60,19 @@ struct ihex_record {
         unsigned int txt_offset; /* current position in txt_data */
 };
 
-static u8 usb6fire_fw_ihex_nibble(const u8 n)
-{
-        if (n >= '0' && n <= '9')
-                return n - '0';
-        else if (n >= 'A' && n <= 'F')
-                return n - ('A' - 10);
-        else if (n >= 'a' && n <= 'f')
-                return n - ('a' - 10);
-        return 0;
-}
-
 static u8 usb6fire_fw_ihex_hex(const u8 *data, u8 *crc)
 {
-        u8 val = (usb6fire_fw_ihex_nibble(data[0]) << 4) |
-                        usb6fire_fw_ihex_nibble(data[1]);
+        u8 val = 0;
+        int hval;
+
+        hval = hex_to_bin(data[0]);
+        if (hval >= 0)
+                val |= (hval << 4);
+
+        hval = hex_to_bin(data[1]);
+        if (hval >= 0)
+                val |= hval;
+
         *crc += val;
         return val;
 }
diff --git a/sound/usb/Kconfig b/sound/usb/Kconfig
index 8beb77563da2..3efc21c3d67c 100644
--- a/sound/usb/Kconfig
+++ b/sound/usb/Kconfig
@@ -67,6 +67,7 @@ config SND_USB_CAIAQ
             * Native Instruments Guitar Rig mobile
             * Native Instruments Traktor Kontrol X1
             * Native Instruments Traktor Kontrol S4
+            * Native Instruments Maschine Controller
 
            To compile this driver as a module, choose M here: the module
            will be called snd-usb-caiaq.
@@ -85,6 +86,7 @@ config SND_USB_CAIAQ_INPUT
            * Native Instruments Kore Controller 2
            * Native Instruments Audio Kontrol 1
            * Native Instruments Traktor Kontrol S4
+           * Native Instruments Maschine Controller
 
 config SND_USB_US122L
         tristate "Tascam US-122L USB driver"
diff --git a/sound/usb/Makefile b/sound/usb/Makefile
index cf9ed66445fa..ac256dc4c6be 100644
--- a/sound/usb/Makefile
+++ b/sound/usb/Makefile
@@ -3,16 +3,16 @@
 #
 
 snd-usb-audio-objs :=   card.o \
+                        clock.o \
+                        endpoint.o \
+                        format.o \
+                        helper.o \
                         mixer.o \
                         mixer_quirks.o \
+                        pcm.o \
                         proc.o \
                         quirks.o \
-                        format.o \
-                        endpoint.o \
-                        urb.o \
-                        pcm.o \
-                        helper.o \
-                        clock.o
+                        stream.o
 
 snd-usbmidi-lib-objs := midi.o
 
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c
index 45bc4a2dc6f0..3eb605bd9503 100644
--- a/sound/usb/caiaq/device.c
+++ b/sound/usb/caiaq/device.c
@@ -50,7 +50,8 @@ MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2},"
                          "{Native Instruments, Session I/O},"
                          "{Native Instruments, GuitarRig mobile}"
                          "{Native Instruments, Traktor Kontrol X1}"
-                         "{Native Instruments, Traktor Kontrol S4}");
+                         "{Native Instruments, Traktor Kontrol S4}"
+                         "{Native Instruments, Maschine Controller}");
 
 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
@@ -146,6 +147,11 @@ static struct usb_device_id snd_usb_id_table[] = {
                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
                 .idProduct =    USB_PID_TRAKTORAUDIO2
         },
+        {
+                .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
+                .idVendor =     USB_VID_NATIVEINSTRUMENTS,
+                .idProduct =    USB_PID_MASCHINECONTROLLER
+        },
         { /* terminator */ }
 };
 
diff --git a/sound/usb/caiaq/device.h b/sound/usb/caiaq/device.h
index 3f9c6339ae90..562b0bff9c41 100644
--- a/sound/usb/caiaq/device.h
+++ b/sound/usb/caiaq/device.h
@@ -18,6 +18,7 @@
 #define USB_PID_TRAKTORKONTROLX1        0x2305
 #define USB_PID_TRAKTORKONTROLS4        0xbaff
 #define USB_PID_TRAKTORAUDIO2           0x041d
+#define USB_PID_MASCHINECONTROLLER  0x0808
 
 #define EP1_BUFSIZE 64
 #define EP4_BUFSIZE 512
diff --git a/sound/usb/caiaq/input.c b/sound/usb/caiaq/input.c
index a213813487bd..26a121b42c3c 100644
--- a/sound/usb/caiaq/input.c
+++ b/sound/usb/caiaq/input.c
@@ -67,6 +67,61 @@ static unsigned short keycode_kore[] = {
         KEY_BRL_DOT5
 };
 
+#define MASCHINE_BUTTONS   (42)
+#define MASCHINE_BUTTON(X) ((X) + BTN_MISC)
+#define MASCHINE_PADS      (16)
+#define MASCHINE_PAD(X)    ((X) + ABS_PRESSURE)
+
+static unsigned short keycode_maschine[] = {
+        MASCHINE_BUTTON(40), /* mute       */
+        MASCHINE_BUTTON(39), /* solo       */
+        MASCHINE_BUTTON(38), /* select     */
+        MASCHINE_BUTTON(37), /* duplicate  */
+        MASCHINE_BUTTON(36), /* navigate   */
+        MASCHINE_BUTTON(35), /* pad mode   */
+        MASCHINE_BUTTON(34), /* pattern    */
+        MASCHINE_BUTTON(33), /* scene      */
+        KEY_RESERVED, /* spacer */
+
+        MASCHINE_BUTTON(30), /* rec        */
+        MASCHINE_BUTTON(31), /* erase      */
+        MASCHINE_BUTTON(32), /* shift      */
+        MASCHINE_BUTTON(28), /* grid       */
+        MASCHINE_BUTTON(27), /* >          */
+        MASCHINE_BUTTON(26), /* <          */
+        MASCHINE_BUTTON(25), /* restart    */
+
+        MASCHINE_BUTTON(21), /* E          */
+        MASCHINE_BUTTON(22), /* F          */
+        MASCHINE_BUTTON(23), /* G          */
+        MASCHINE_BUTTON(24), /* H          */
+        MASCHINE_BUTTON(20), /* D          */
+        MASCHINE_BUTTON(19), /* C          */
+        MASCHINE_BUTTON(18), /* B          */
+        MASCHINE_BUTTON(17), /* A          */
+
+        MASCHINE_BUTTON(0),  /* control    */
+        MASCHINE_BUTTON(2),  /* browse     */
+        MASCHINE_BUTTON(4),  /* <          */
+        MASCHINE_BUTTON(6),  /* snap       */
+        MASCHINE_BUTTON(7),  /* autowrite  */
+        MASCHINE_BUTTON(5),  /* >          */
+        MASCHINE_BUTTON(3),  /* sampling   */
+        MASCHINE_BUTTON(1),  /* step       */
+
+        MASCHINE_BUTTON(15), /* 8 softkeys */
+        MASCHINE_BUTTON(14),
+        MASCHINE_BUTTON(13),
+        MASCHINE_BUTTON(12),
+        MASCHINE_BUTTON(11),
+        MASCHINE_BUTTON(10),
+        MASCHINE_BUTTON(9),
+        MASCHINE_BUTTON(8),
+
+        MASCHINE_BUTTON(16), /* note repeat */
+        MASCHINE_BUTTON(29)  /* play        */
+};
+
 #define KONTROLX1_INPUTS        (40)
 #define KONTROLS4_BUTTONS       (12 * 8)
 #define KONTROLS4_AXIS          (46)
@@ -218,6 +273,29 @@ static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
                 input_report_abs(input_dev, ABS_HAT3Y, i);
                 input_sync(input_dev);
                 break;
+
+        case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+                /* 4 under the left screen */
+                input_report_abs(input_dev, ABS_HAT0X, decode_erp(buf[21], buf[20]));
+                input_report_abs(input_dev, ABS_HAT0Y, decode_erp(buf[15], buf[14]));
+                input_report_abs(input_dev, ABS_HAT1X, decode_erp(buf[9],  buf[8]));
+                input_report_abs(input_dev, ABS_HAT1Y, decode_erp(buf[3],  buf[2]));
+
+                /* 4 under the right screen */
+                input_report_abs(input_dev, ABS_HAT2X, decode_erp(buf[19], buf[18]));
+                input_report_abs(input_dev, ABS_HAT2Y, decode_erp(buf[13], buf[12]));
+                input_report_abs(input_dev, ABS_HAT3X, decode_erp(buf[7],  buf[6]));
+                input_report_abs(input_dev, ABS_HAT3Y, decode_erp(buf[1],  buf[0]));
+
+                /* volume */
+                input_report_abs(input_dev, ABS_RX, decode_erp(buf[17], buf[16]));
+                /* tempo */
+                input_report_abs(input_dev, ABS_RY, decode_erp(buf[11], buf[10]));
+                /* swing */
+                input_report_abs(input_dev, ABS_RZ, decode_erp(buf[5],  buf[4]));
+
+                input_sync(input_dev);
+                break;
         }
 }
 
@@ -400,6 +478,25 @@ static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *dev,
         input_sync(dev->input_dev);
 }
 
+#define MASCHINE_MSGBLOCK_SIZE 2
+
+static void snd_usb_caiaq_maschine_dispatch(struct snd_usb_caiaqdev *dev,
+                                        const unsigned char *buf,
+                                        unsigned int len)
+{
+        unsigned int i, pad_id;
+        uint16_t pressure;
+
+        for (i = 0; i < MASCHINE_PADS; i++) {
+                pressure = be16_to_cpu(buf[i * 2] << 8 | buf[(i * 2) + 1]);
+                pad_id = pressure >> 12;
+
+                input_report_abs(dev->input_dev, MASCHINE_PAD(pad_id), pressure & 0xfff);
+        }
+
+        input_sync(dev->input_dev);
+}
+
 static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
 {
         struct snd_usb_caiaqdev *dev = urb->context;
@@ -425,6 +522,13 @@ static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
                 snd_usb_caiaq_tks4_dispatch(dev, buf, urb->actual_length);
                 break;
+
+        case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+                if (urb->actual_length < (MASCHINE_PADS * MASCHINE_MSGBLOCK_SIZE))
+                        goto requeue;
+
+                snd_usb_caiaq_maschine_dispatch(dev, buf, urb->actual_length);
+                break;
         }
 
 requeue:
@@ -444,6 +548,7 @@ static int snd_usb_caiaq_input_open(struct input_dev *idev)
         switch (dev->chip.usb_id) {
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
+        case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
                 if (usb_submit_urb(dev->ep4_in_urb, GFP_KERNEL) != 0)
                         return -EIO;
                 break;
@@ -462,6 +567,7 @@ static void snd_usb_caiaq_input_close(struct input_dev *idev)
         switch (dev->chip.usb_id) {
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
+        case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
                 usb_kill_urb(dev->ep4_in_urb);
                 break;
         }
@@ -652,6 +758,50 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 
                 break;
 
+        case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+                input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+                input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
+                        BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
+                        BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
+                        BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
+                        BIT_MASK(ABS_RX) | BIT_MASK(ABS_RY) |
+                        BIT_MASK(ABS_RZ);
+
+                BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_maschine));
+                memcpy(dev->keycode, keycode_maschine, sizeof(keycode_maschine));
+                input->keycodemax = ARRAY_SIZE(keycode_maschine);
+
+                for (i = 0; i < MASCHINE_PADS; i++) {
+                        input->absbit[0] |= MASCHINE_PAD(i);
+                        input_set_abs_params(input, MASCHINE_PAD(i), 0, 0xfff, 5, 10);
+                }
+
+                input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_RX, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_RY, 0, 999, 0, 10);
+                input_set_abs_params(input, ABS_RZ, 0, 999, 0, 10);
+
+                dev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+                if (!dev->ep4_in_urb) {
+                        ret = -ENOMEM;
+                        goto exit_free_idev;
+                }
+
+                usb_fill_bulk_urb(dev->ep4_in_urb, usb_dev,
+                                  usb_rcvbulkpipe(usb_dev, 0x4),
+                                  dev->ep4_in_buf, EP4_BUFSIZE,
+                                  snd_usb_caiaq_ep4_reply_dispatch, dev);
+
+                snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
+                break;
+
         default:
                 /* no input methods supported on this device */
                 goto exit_free_idev;
@@ -664,15 +814,17 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
         for (i = 0; i < input->keycodemax; i++)
                 __set_bit(dev->keycode[i], input->keybit);
 
+        dev->input_dev = input;
+
         ret = input_register_device(input);
         if (ret < 0)
                 goto exit_free_idev;
 
-        dev->input_dev = input;
         return 0;
 
 exit_free_idev:
         input_free_device(input);
+        dev->input_dev = NULL;
         return ret;
 }
 
@@ -688,4 +840,3 @@ void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
         input_unregister_device(dev->input_dev);
         dev->input_dev = NULL;
 }
-
diff --git a/sound/usb/card.c b/sound/usb/card.c
index d8f2bf401458..c1575eafff12 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -65,9 +65,9 @@
 #include "helper.h"
 #include "debug.h"
 #include "pcm.h"
-#include "urb.h"
 #include "format.h"
 #include "power.h"
+#include "stream.h"
 
 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
 MODULE_DESCRIPTION("USB Audio");
@@ -185,7 +185,7 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
                 return -EINVAL;
         }
 
-        if (! snd_usb_parse_audio_endpoints(chip, interface)) {
+        if (! snd_usb_parse_audio_interface(chip, interface)) {
                 usb_set_interface(dev, interface, 0); /* reset the current interface */
                 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
                 return -EINVAL;
diff --git a/sound/usb/card.h b/sound/usb/card.h
index ae4251d5abf7..a39edcc32a93 100644
--- a/sound/usb/card.h
+++ b/sound/usb/card.h
@@ -94,6 +94,8 @@ struct snd_usb_substream {
         spinlock_t lock;
 
         struct snd_urb_ops ops;         /* callbacks (must be filled at init) */
+        int last_frame_number;          /* stored frame number */
+        int last_delay;                 /* stored delay */
 };
 
 struct snd_usb_stream {
diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 075195e8661a..379baad3d5ad 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -91,7 +91,7 @@ static int uac_clock_selector_get_val(struct snd_usb_audio *chip, int selector_i
                               USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
                               UAC2_CX_CLOCK_SELECTOR << 8,
                               snd_usb_ctrl_intf(chip) | (selector_id << 8),
-                              &buf, sizeof(buf), 1000);
+                              &buf, sizeof(buf));
 
         if (ret < 0)
                 return ret;
@@ -118,7 +118,7 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
                               UAC2_CS_CONTROL_CLOCK_VALID << 8,
                               snd_usb_ctrl_intf(chip) | (source_id << 8),
-                              &data, sizeof(data), 1000);
+                              &data, sizeof(data));
 
         if (err < 0) {
                 snd_printk(KERN_WARNING "%s(): cannot get clock validity for id %d\n",
@@ -222,7 +222,7 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
         if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
                                    USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT,
                                    UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep,
-                                   data, sizeof(data), 1000)) < 0) {
+                                   data, sizeof(data))) < 0) {
                 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n",
                            dev->devnum, iface, fmt->altsetting, rate, ep);
                 return err;
@@ -231,7 +231,7 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
         if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR,
                                    USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN,
                                    UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep,
-                                   data, sizeof(data), 1000)) < 0) {
+                                   data, sizeof(data))) < 0) {
                 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n",
                            dev->devnum, iface, fmt->altsetting, ep);
                 return 0; /* some devices don't support reading */
@@ -273,7 +273,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
                                    USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
                                    UAC2_CS_CONTROL_SAM_FREQ << 8,
                                    snd_usb_ctrl_intf(chip) | (clock << 8),
-                                   data, sizeof(data), 1000)) < 0) {
+                                   data, sizeof(data))) < 0) {
                 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
                            dev->devnum, iface, fmt->altsetting, rate);
                 return err;
@@ -283,7 +283,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
                                    USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
                                    UAC2_CS_CONTROL_SAM_FREQ << 8,
                                    snd_usb_ctrl_intf(chip) | (clock << 8),
-                                   data, sizeof(data), 1000)) < 0) {
+                                   data, sizeof(data))) < 0) {
                 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
                            dev->devnum, iface, fmt->altsetting);
                 return err;
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 7d46e482375d..81c6edecd862 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -15,436 +15,951 @@
  *
  */
 
+#include <linux/gfp.h>
 #include <linux/init.h>
-#include <linux/slab.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
-#include <linux/usb/audio-v2.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
 
 #include "usbaudio.h"
+#include "helper.h"
 #include "card.h"
-#include "proc.h"
-#include "quirks.h"
 #include "endpoint.h"
-#include "urb.h"
 #include "pcm.h"
-#include "helper.h"
-#include "format.h"
-#include "clock.h"
 
 /*
- * free a substream
+ * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
+ * this will overflow at approx 524 kHz
  */
-static void free_substream(struct snd_usb_substream *subs)
+static inline unsigned get_usb_full_speed_rate(unsigned int rate)
 {
-        struct list_head *p, *n;
-
-        if (!subs->num_formats)
-                return; /* not initialized */
-        list_for_each_safe(p, n, &subs->fmt_list) {
-                struct audioformat *fp = list_entry(p, struct audioformat, list);
-                kfree(fp->rate_table);
-                kfree(fp);
-        }
-        kfree(subs->rate_list.list);
+        return ((rate << 13) + 62) / 125;
 }
 
+/*
+ * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
+ * this will overflow at approx 4 MHz
+ */
+static inline unsigned get_usb_high_speed_rate(unsigned int rate)
+{
+        return ((rate << 10) + 62) / 125;
+}
 
 /*
- * free a usb stream instance
+ * unlink active urbs.
  */
-static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
+static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
 {
-        free_substream(&stream->substream[0]);
-        free_substream(&stream->substream[1]);
-        list_del(&stream->list);
-        kfree(stream);
+        struct snd_usb_audio *chip = subs->stream->chip;
+        unsigned int i;
+        int async;
+
+        subs->running = 0;
+
+        if (!force && subs->stream->chip->shutdown) /* to be sure... */
+                return -EBADFD;
+
+        async = !can_sleep && chip->async_unlink;
+
+        if (!async && in_interrupt())
+                return 0;
+
+        for (i = 0; i < subs->nurbs; i++) {
+                if (test_bit(i, &subs->active_mask)) {
+                        if (!test_and_set_bit(i, &subs->unlink_mask)) {
+                                struct urb *u = subs->dataurb[i].urb;
+                                if (async)
+                                        usb_unlink_urb(u);
+                                else
+                                        usb_kill_urb(u);
+                        }
+                }
+        }
+        if (subs->syncpipe) {
+                for (i = 0; i < SYNC_URBS; i++) {
+                        if (test_bit(i+16, &subs->active_mask)) {
+                                if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
+                                        struct urb *u = subs->syncurb[i].urb;
+                                        if (async)
+                                                usb_unlink_urb(u);
+                                        else
+                                                usb_kill_urb(u);
+                                }
+                        }
+                }
+        }
+        return 0;
 }
 
-static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
+
+/*
+ * release a urb data
+ */
+static void release_urb_ctx(struct snd_urb_ctx *u)
 {
-        struct snd_usb_stream *stream = pcm->private_data;
-        if (stream) {
-                stream->pcm = NULL;
-                snd_usb_audio_stream_free(stream);
+        if (u->urb) {
+                if (u->buffer_size)
+                        usb_free_coherent(u->subs->dev, u->buffer_size,
+                                        u->urb->transfer_buffer,
+                                        u->urb->transfer_dma);
+                usb_free_urb(u->urb);
+                u->urb = NULL;
         }
 }
 
+/*
+ *  wait until all urbs are processed.
+ */
+static int wait_clear_urbs(struct snd_usb_substream *subs)
+{
+        unsigned long end_time = jiffies + msecs_to_jiffies(1000);
+        unsigned int i;
+        int alive;
+
+        do {
+                alive = 0;
+                for (i = 0; i < subs->nurbs; i++) {
+                        if (test_bit(i, &subs->active_mask))
+                                alive++;
+                }
+                if (subs->syncpipe) {
+                        for (i = 0; i < SYNC_URBS; i++) {
+                                if (test_bit(i + 16, &subs->active_mask))
+                                        alive++;
+                        }
+                }
+                if (! alive)
+                        break;
+                schedule_timeout_uninterruptible(1);
+        } while (time_before(jiffies, end_time));
+        if (alive)
+                snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
+        return 0;
+}
 
 /*
- * add this endpoint to the chip instance.
- * if a stream with the same endpoint already exists, append to it.
- * if not, create a new pcm stream.
+ * release a substream
  */
-int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
+void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force)
 {
-        struct list_head *p;
-        struct snd_usb_stream *as;
-        struct snd_usb_substream *subs;
-        struct snd_pcm *pcm;
-        int err;
+        int i;
+
+        /* stop urbs (to be sure) */
+        deactivate_urbs(subs, force, 1);
+        wait_clear_urbs(subs);
+
+        for (i = 0; i < MAX_URBS; i++)
+                release_urb_ctx(&subs->dataurb[i]);
+        for (i = 0; i < SYNC_URBS; i++)
+                release_urb_ctx(&subs->syncurb[i]);
+        usb_free_coherent(subs->dev, SYNC_URBS * 4,
+                        subs->syncbuf, subs->sync_dma);
+        subs->syncbuf = NULL;
+        subs->nurbs = 0;
+}
 
-        list_for_each(p, &chip->pcm_list) {
-                as = list_entry(p, struct snd_usb_stream, list);
-                if (as->fmt_type != fp->fmt_type)
-                        continue;
-                subs = &as->substream[stream];
-                if (!subs->endpoint)
-                        continue;
-                if (subs->endpoint == fp->endpoint) {
-                        list_add_tail(&fp->list, &subs->fmt_list);
-                        subs->num_formats++;
-                        subs->formats |= fp->formats;
-                        return 0;
+/*
+ * complete callback from data urb
+ */
+static void snd_complete_urb(struct urb *urb)
+{
+        struct snd_urb_ctx *ctx = urb->context;
+        struct snd_usb_substream *subs = ctx->subs;
+        struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
+        int err = 0;
+
+        if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
+            !subs->running || /* can be stopped during retire callback */
+            (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
+            (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+                clear_bit(ctx->index, &subs->active_mask);
+                if (err < 0) {
+                        snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
+                        snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
                 }
         }
-        /* look for an empty stream */
-        list_for_each(p, &chip->pcm_list) {
-                as = list_entry(p, struct snd_usb_stream, list);
-                if (as->fmt_type != fp->fmt_type)
-                        continue;
-                subs = &as->substream[stream];
-                if (subs->endpoint)
-                        continue;
-                err = snd_pcm_new_stream(as->pcm, stream, 1);
-                if (err < 0)
-                        return err;
-                snd_usb_init_substream(as, stream, fp);
-                return 0;
+}
+
+
+/*
+ * complete callback from sync urb
+ */
+static void snd_complete_sync_urb(struct urb *urb)
+{
+        struct snd_urb_ctx *ctx = urb->context;
+        struct snd_usb_substream *subs = ctx->subs;
+        struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
+        int err = 0;
+
+        if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
+            !subs->running || /* can be stopped during retire callback */
+            (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
+            (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+                clear_bit(ctx->index + 16, &subs->active_mask);
+                if (err < 0) {
+                        snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
+                        snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
+                }
         }
+}
+
 
-        /* create a new pcm */
-        as = kzalloc(sizeof(*as), GFP_KERNEL);
-        if (!as)
-                return -ENOMEM;
-        as->pcm_index = chip->pcm_devs;
-        as->chip = chip;
-        as->fmt_type = fp->fmt_type;
-        err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
-                          stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
-                          stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
-                          &pcm);
-        if (err < 0) {
-                kfree(as);
-                return err;
+/*
+ * initialize a substream for plaback/capture
+ */
+int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
+                                unsigned int period_bytes,
+                                unsigned int rate,
+                                unsigned int frame_bits)
+{
+        unsigned int maxsize, i;
+        int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
+        unsigned int urb_packs, total_packs, packs_per_ms;
+        struct snd_usb_audio *chip = subs->stream->chip;
+
+        /* calculate the frequency in 16.16 format */
+        if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
+                subs->freqn = get_usb_full_speed_rate(rate);
+        else
+                subs->freqn = get_usb_high_speed_rate(rate);
+        subs->freqm = subs->freqn;
+        subs->freqshift = INT_MIN;
+        /* calculate max. frequency */
+        if (subs->maxpacksize) {
+                /* whatever fits into a max. size packet */
+                maxsize = subs->maxpacksize;
+                subs->freqmax = (maxsize / (frame_bits >> 3))
+                                << (16 - subs->datainterval);
+        } else {
+                /* no max. packet size: just take 25% higher than nominal */
+                subs->freqmax = subs->freqn + (subs->freqn >> 2);
+                maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
+                                >> (16 - subs->datainterval);
         }
-        as->pcm = pcm;
-        pcm->private_data = as;
-        pcm->private_free = snd_usb_audio_pcm_free;
-        pcm->info_flags = 0;
-        if (chip->pcm_devs > 0)
-                sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
+        subs->phase = 0;
+
+        if (subs->fill_max)
+                subs->curpacksize = subs->maxpacksize;
         else
-                strcpy(pcm->name, "USB Audio");
+                subs->curpacksize = maxsize;
 
-        snd_usb_init_substream(as, stream, fp);
+        if (snd_usb_get_speed(subs->dev) != USB_SPEED_FULL)
+                packs_per_ms = 8 >> subs->datainterval;
+        else
+                packs_per_ms = 1;
+
+        if (is_playback) {
+                urb_packs = max(chip->nrpacks, 1);
+                urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
+        } else
+                urb_packs = 1;
+        urb_packs *= packs_per_ms;
+        if (subs->syncpipe)
+                urb_packs = min(urb_packs, 1U << subs->syncinterval);
+
+        /* decide how many packets to be used */
+        if (is_playback) {
+                unsigned int minsize, maxpacks;
+                /* determine how small a packet can be */
+                minsize = (subs->freqn >> (16 - subs->datainterval))
+                          * (frame_bits >> 3);
+                /* with sync from device, assume it can be 12% lower */
+                if (subs->syncpipe)
+                        minsize -= minsize >> 3;
+                minsize = max(minsize, 1u);
+                total_packs = (period_bytes + minsize - 1) / minsize;
+                /* we need at least two URBs for queueing */
+                if (total_packs < 2) {
+                        total_packs = 2;
+                } else {
+                        /* and we don't want too long a queue either */
+                        maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2);
+                        total_packs = min(total_packs, maxpacks);
+                }
+        } else {
+                while (urb_packs > 1 && urb_packs * maxsize >= period_bytes)
+                        urb_packs >>= 1;
+                total_packs = MAX_URBS * urb_packs;
+        }
+        subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
+        if (subs->nurbs > MAX_URBS) {
+                /* too much... */
+                subs->nurbs = MAX_URBS;
+                total_packs = MAX_URBS * urb_packs;
+        } else if (subs->nurbs < 2) {
+                /* too little - we need at least two packets
+                 * to ensure contiguous playback/capture
+                 */
+                subs->nurbs = 2;
+        }
 
-        list_add(&as->list, &chip->pcm_list);
-        chip->pcm_devs++;
+        /* allocate and initialize data urbs */
+        for (i = 0; i < subs->nurbs; i++) {
+                struct snd_urb_ctx *u = &subs->dataurb[i];
+                u->index = i;
+                u->subs = subs;
+                u->packets = (i + 1) * total_packs / subs->nurbs
+                        - i * total_packs / subs->nurbs;
+                u->buffer_size = maxsize * u->packets;
+                if (subs->fmt_type == UAC_FORMAT_TYPE_II)
+                        u->packets++; /* for transfer delimiter */
+                u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
+                if (!u->urb)
+                        goto out_of_memory;
+                u->urb->transfer_buffer =
+                        usb_alloc_coherent(subs->dev, u->buffer_size,
+                                           GFP_KERNEL, &u->urb->transfer_dma);
+                if (!u->urb->transfer_buffer)
+                        goto out_of_memory;
+                u->urb->pipe = subs->datapipe;
+                u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+                u->urb->interval = 1 << subs->datainterval;
+                u->urb->context = u;
+                u->urb->complete = snd_complete_urb;
+        }
+
+        if (subs->syncpipe) {
+                /* allocate and initialize sync urbs */
+                subs->syncbuf = usb_alloc_coherent(subs->dev, SYNC_URBS * 4,
+                                                 GFP_KERNEL, &subs->sync_dma);
+                if (!subs->syncbuf)
+                        goto out_of_memory;
+                for (i = 0; i < SYNC_URBS; i++) {
+                        struct snd_urb_ctx *u = &subs->syncurb[i];
+                        u->index = i;
+                        u->subs = subs;
+                        u->packets = 1;
+                        u->urb = usb_alloc_urb(1, GFP_KERNEL);
+                        if (!u->urb)
+                                goto out_of_memory;
+                        u->urb->transfer_buffer = subs->syncbuf + i * 4;
+                        u->urb->transfer_dma = subs->sync_dma + i * 4;
+                        u->urb->transfer_buffer_length = 4;
+                        u->urb->pipe = subs->syncpipe;
+                        u->urb->transfer_flags = URB_ISO_ASAP |
+                                                 URB_NO_TRANSFER_DMA_MAP;
+                        u->urb->number_of_packets = 1;
+                        u->urb->interval = 1 << subs->syncinterval;
+                        u->urb->context = u;
+                        u->urb->complete = snd_complete_sync_urb;
+                }
+        }
+        return 0;
 
-        snd_usb_proc_pcm_format_add(as);
+out_of_memory:
+        snd_usb_release_substream_urbs(subs, 0);
+        return -ENOMEM;
+}
 
+/*
+ * prepare urb for full speed capture sync pipe
+ *
+ * fill the length and offset of each urb descriptor.
+ * the fixed 10.14 frequency is passed through the pipe.
+ */
+static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
+                                    struct snd_pcm_runtime *runtime,
+                                    struct urb *urb)
+{
+        unsigned char *cp = urb->transfer_buffer;
+        struct snd_urb_ctx *ctx = urb->context;
+
+        urb->dev = ctx->subs->dev; /* we need to set this at each time */
+        urb->iso_frame_desc[0].length = 3;
+        urb->iso_frame_desc[0].offset = 0;
+        cp[0] = subs->freqn >> 2;
+        cp[1] = subs->freqn >> 10;
+        cp[2] = subs->freqn >> 18;
         return 0;
 }
 
-static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip,
-                                         struct usb_host_interface *alts,
-                                         int protocol, int iface_no)
+/*
+ * prepare urb for high speed capture sync pipe
+ *
+ * fill the length and offset of each urb descriptor.
+ * the fixed 12.13 frequency is passed as 16.16 through the pipe.
+ */
+static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
+                                       struct snd_pcm_runtime *runtime,
+                                       struct urb *urb)
 {
-        /* parsed with a v1 header here. that's ok as we only look at the
-         * header first which is the same for both versions */
-        struct uac_iso_endpoint_descriptor *csep;
-        struct usb_interface_descriptor *altsd = get_iface_desc(alts);
-        int attributes = 0;
-
-        csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
-
-        /* Creamware Noah has this descriptor after the 2nd endpoint */
-        if (!csep && altsd->bNumEndpoints >= 2)
-                csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
-
-        if (!csep || csep->bLength < 7 ||
-            csep->bDescriptorSubtype != UAC_EP_GENERAL) {
-                snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
-                           " class specific endpoint descriptor\n",
-                           chip->dev->devnum, iface_no,
-                           altsd->bAlternateSetting);
-                return 0;
-        }
+        unsigned char *cp = urb->transfer_buffer;
+        struct snd_urb_ctx *ctx = urb->context;
+
+        urb->dev = ctx->subs->dev; /* we need to set this at each time */
+        urb->iso_frame_desc[0].length = 4;
+        urb->iso_frame_desc[0].offset = 0;
+        cp[0] = subs->freqn;
+        cp[1] = subs->freqn >> 8;
+        cp[2] = subs->freqn >> 16;
+        cp[3] = subs->freqn >> 24;
+        return 0;
+}
 
-        if (protocol == UAC_VERSION_1) {
-                attributes = csep->bmAttributes;
-        } else {
-                struct uac2_iso_endpoint_descriptor *csep2 =
-                        (struct uac2_iso_endpoint_descriptor *) csep;
+/*
+ * process after capture sync complete
+ * - nothing to do
+ */
+static int retire_capture_sync_urb(struct snd_usb_substream *subs,
+                                   struct snd_pcm_runtime *runtime,
+                                   struct urb *urb)
+{
+        return 0;
+}
 
-                attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX;
+/*
+ * prepare urb for capture data pipe
+ *
+ * fill the offset and length of each descriptor.
+ *
+ * we use a temporary buffer to write the captured data.
+ * since the length of written data is determined by host, we cannot
+ * write onto the pcm buffer directly...  the data is thus copied
+ * later at complete callback to the global buffer.
+ */
+static int prepare_capture_urb(struct snd_usb_substream *subs,
+                               struct snd_pcm_runtime *runtime,
+                               struct urb *urb)
+{
+        int i, offs;
+        struct snd_urb_ctx *ctx = urb->context;
+
+        offs = 0;
+        urb->dev = ctx->subs->dev; /* we need to set this at each time */
+        for (i = 0; i < ctx->packets; i++) {
+                urb->iso_frame_desc[i].offset = offs;
+                urb->iso_frame_desc[i].length = subs->curpacksize;
+                offs += subs->curpacksize;
+        }
+        urb->transfer_buffer_length = offs;
+        urb->number_of_packets = ctx->packets;
+        return 0;
+}
 
-                /* emulate the endpoint attributes of a v1 device */
-                if (csep2->bmControls & UAC2_CONTROL_PITCH)
-                        attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL;
+/*
+ * process after capture complete
+ *
+ * copy the data from each desctiptor to the pcm buffer, and
+ * update the current position.
+ */
+static int retire_capture_urb(struct snd_usb_substream *subs,
+                              struct snd_pcm_runtime *runtime,
+                              struct urb *urb)
+{
+        unsigned long flags;
+        unsigned char *cp;
+        int i;
+        unsigned int stride, frames, bytes, oldptr;
+        int period_elapsed = 0;
+
+        stride = runtime->frame_bits >> 3;
+
+        for (i = 0; i < urb->number_of_packets; i++) {
+                cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+                if (urb->iso_frame_desc[i].status) {
+                        snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
+                        // continue;
+                }
+                bytes = urb->iso_frame_desc[i].actual_length;
+                frames = bytes / stride;
+                if (!subs->txfr_quirk)
+                        bytes = frames * stride;
+                if (bytes % (runtime->sample_bits >> 3) != 0) {
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+                        int oldbytes = bytes;
+#endif
+                        bytes = frames * stride;
+                        snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n",
+                                                        oldbytes, bytes);
+                }
+                /* update the current pointer */
+                spin_lock_irqsave(&subs->lock, flags);
+                oldptr = subs->hwptr_done;
+                subs->hwptr_done += bytes;
+                if (subs->hwptr_done >= runtime->buffer_size * stride)
+                        subs->hwptr_done -= runtime->buffer_size * stride;
+                frames = (bytes + (oldptr % stride)) / stride;
+                subs->transfer_done += frames;
+                if (subs->transfer_done >= runtime->period_size) {
+                        subs->transfer_done -= runtime->period_size;
+                        period_elapsed = 1;
+                }
+                spin_unlock_irqrestore(&subs->lock, flags);
+                /* copy a data chunk */
+                if (oldptr + bytes > runtime->buffer_size * stride) {
+                        unsigned int bytes1 =
+                                        runtime->buffer_size * stride - oldptr;
+                        memcpy(runtime->dma_area + oldptr, cp, bytes1);
+                        memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1);
+                } else {
+                        memcpy(runtime->dma_area + oldptr, cp, bytes);
+                }
         }
+        if (period_elapsed)
+                snd_pcm_period_elapsed(subs->pcm_substream);
+        return 0;
+}
 
-        return attributes;
+/*
+ * Process after capture complete when paused.  Nothing to do.
+ */
+static int retire_paused_capture_urb(struct snd_usb_substream *subs,
+                                     struct snd_pcm_runtime *runtime,
+                                     struct urb *urb)
+{
+        return 0;
 }
 
-static struct uac2_input_terminal_descriptor *
-        snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface,
-                                               int terminal_id)
+
+/*
+ * prepare urb for playback sync pipe
+ *
+ * set up the offset and length to receive the current frequency.
+ */
+static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
+                                     struct snd_pcm_runtime *runtime,
+                                     struct urb *urb)
 {
-        struct uac2_input_terminal_descriptor *term = NULL;
+        struct snd_urb_ctx *ctx = urb->context;
+
+        urb->dev = ctx->subs->dev; /* we need to set this at each time */
+        urb->iso_frame_desc[0].length = min(4u, ctx->subs->syncmaxsize);
+        urb->iso_frame_desc[0].offset = 0;
+        return 0;
+}
 
-        while ((term = snd_usb_find_csint_desc(ctrl_iface->extra,
-                                               ctrl_iface->extralen,
-                                               term, UAC_INPUT_TERMINAL))) {
-                if (term->bTerminalID == terminal_id)
-                        return term;
+/*
+ * process after playback sync complete
+ *
+ * Full speed devices report feedback values in 10.14 format as samples per
+ * frame, high speed devices in 16.16 format as samples per microframe.
+ * Because the Audio Class 1 spec was written before USB 2.0, many high speed
+ * devices use a wrong interpretation, some others use an entirely different
+ * format.  Therefore, we cannot predict what format any particular device uses
+ * and must detect it automatically.
+ */
+static int retire_playback_sync_urb(struct snd_usb_substream *subs,
+                                    struct snd_pcm_runtime *runtime,
+                                    struct urb *urb)
+{
+        unsigned int f;
+        int shift;
+        unsigned long flags;
+
+        if (urb->iso_frame_desc[0].status != 0 ||
+            urb->iso_frame_desc[0].actual_length < 3)
+                return 0;
+
+        f = le32_to_cpup(urb->transfer_buffer);
+        if (urb->iso_frame_desc[0].actual_length == 3)
+                f &= 0x00ffffff;
+        else
+                f &= 0x0fffffff;
+        if (f == 0)
+                return 0;
+
+        if (unlikely(subs->freqshift == INT_MIN)) {
+                /*
+                 * The first time we see a feedback value, determine its format
+                 * by shifting it left or right until it matches the nominal
+                 * frequency value.  This assumes that the feedback does not
+                 * differ from the nominal value more than +50% or -25%.
+                 */
+                shift = 0;
+                while (f < subs->freqn - subs->freqn / 4) {
+                        f <<= 1;
+                        shift++;
+                }
+                while (f > subs->freqn + subs->freqn / 2) {
+                        f >>= 1;
+                        shift--;
+                }
+                subs->freqshift = shift;
+        }
+        else if (subs->freqshift >= 0)
+                f <<= subs->freqshift;
+        else
+                f >>= -subs->freqshift;
+
+        if (likely(f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax)) {
+                /*
+                 * If the frequency looks valid, set it.
+                 * This value is referred to in prepare_playback_urb().
+                 */
+                spin_lock_irqsave(&subs->lock, flags);
+                subs->freqm = f;
+                spin_unlock_irqrestore(&subs->lock, flags);
+        } else {
+                /*
+                 * Out of range; maybe the shift value is wrong.
+                 * Reset it so that we autodetect again the next time.
+                 */
+                subs->freqshift = INT_MIN;
         }
 
-        return NULL;
+        return 0;
 }
 
-static struct uac2_output_terminal_descriptor *
-        snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface,
-                                                int terminal_id)
+/* determine the number of frames in the next packet */
+static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
 {
-        struct uac2_output_terminal_descriptor *term = NULL;
-
-        while ((term = snd_usb_find_csint_desc(ctrl_iface->extra,
-                                               ctrl_iface->extralen,
-                                               term, UAC_OUTPUT_TERMINAL))) {
-                if (term->bTerminalID == terminal_id)
-                        return term;
+        if (subs->fill_max)
+                return subs->maxframesize;
+        else {
+                subs->phase = (subs->phase & 0xffff)
+                        + (subs->freqm << subs->datainterval);
+                return min(subs->phase >> 16, subs->maxframesize);
         }
+}
 
-        return NULL;
+/*
+ * Prepare urb for streaming before playback starts or when paused.
+ *
+ * We don't have any data, so we send silence.
+ */
+static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
+                                       struct snd_pcm_runtime *runtime,
+                                       struct urb *urb)
+{
+        unsigned int i, offs, counts;
+        struct snd_urb_ctx *ctx = urb->context;
+        int stride = runtime->frame_bits >> 3;
+
+        offs = 0;
+        urb->dev = ctx->subs->dev;
+        for (i = 0; i < ctx->packets; ++i) {
+                counts = snd_usb_audio_next_packet_size(subs);
+                urb->iso_frame_desc[i].offset = offs * stride;
+                urb->iso_frame_desc[i].length = counts * stride;
+                offs += counts;
+        }
+        urb->number_of_packets = ctx->packets;
+        urb->transfer_buffer_length = offs * stride;
+        memset(urb->transfer_buffer,
+               runtime->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
+               offs * stride);
+        return 0;
 }
 
-int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
+/*
+ * prepare urb for playback data pipe
+ *
+ * Since a URB can handle only a single linear buffer, we must use double
+ * buffering when the data to be transferred overflows the buffer boundary.
+ * To avoid inconsistencies when updating hwptr_done, we use double buffering
+ * for all URBs.
+ */
+static int prepare_playback_urb(struct snd_usb_substream *subs,
+                                struct snd_pcm_runtime *runtime,
+                                struct urb *urb)
 {
-        struct usb_device *dev;
-        struct usb_interface *iface;
-        struct usb_host_interface *alts;
-        struct usb_interface_descriptor *altsd;
-        int i, altno, err, stream;
-        int format = 0, num_channels = 0;
-        struct audioformat *fp = NULL;
-        int num, protocol, clock = 0;
-        struct uac_format_type_i_continuous_descriptor *fmt;
+        int i, stride;
+        unsigned int counts, frames, bytes;
+        unsigned long flags;
+        int period_elapsed = 0;
+        struct snd_urb_ctx *ctx = urb->context;
+
+        stride = runtime->frame_bits >> 3;
+
+        frames = 0;
+        urb->dev = ctx->subs->dev; /* we need to set this at each time */
+        urb->number_of_packets = 0;
+        spin_lock_irqsave(&subs->lock, flags);
+        for (i = 0; i < ctx->packets; i++) {
+                counts = snd_usb_audio_next_packet_size(subs);
+                /* set up descriptor */
+                urb->iso_frame_desc[i].offset = frames * stride;
+                urb->iso_frame_desc[i].length = counts * stride;
+                frames += counts;
+                urb->number_of_packets++;
+                subs->transfer_done += counts;
+                if (subs->transfer_done >= runtime->period_size) {
+                        subs->transfer_done -= runtime->period_size;
+                        period_elapsed = 1;
+                        if (subs->fmt_type == UAC_FORMAT_TYPE_II) {
+                                if (subs->transfer_done > 0) {
+                                        /* FIXME: fill-max mode is not
+                                         * supported yet */
+                                        frames -= subs->transfer_done;
+                                        counts -= subs->transfer_done;
+                                        urb->iso_frame_desc[i].length =
+                                                counts * stride;
+                                        subs->transfer_done = 0;
+                                }
+                                i++;
+                                if (i < ctx->packets) {
+                                        /* add a transfer delimiter */
+                                        urb->iso_frame_desc[i].offset =
+                                                frames * stride;
+                                        urb->iso_frame_desc[i].length = 0;
+                                        urb->number_of_packets++;
+                                }
+                                break;
+                        }
+                }
+                if (period_elapsed) /* finish at the period boundary */
+                        break;
+        }
+        bytes = frames * stride;
+        if (subs->hwptr_done + bytes > runtime->buffer_size * stride) {
+                /* err, the transferred area goes over buffer boundary. */
+                unsigned int bytes1 =
+                        runtime->buffer_size * stride - subs->hwptr_done;
+                memcpy(urb->transfer_buffer,
+                       runtime->dma_area + subs->hwptr_done, bytes1);
+                memcpy(urb->transfer_buffer + bytes1,
+                       runtime->dma_area, bytes - bytes1);
+        } else {
+                memcpy(urb->transfer_buffer,
+                       runtime->dma_area + subs->hwptr_done, bytes);
+        }
+        subs->hwptr_done += bytes;
+        if (subs->hwptr_done >= runtime->buffer_size * stride)
+                subs->hwptr_done -= runtime->buffer_size * stride;
+
+        /* update delay with exact number of samples queued */
+        runtime->delay = subs->last_delay;
+        runtime->delay += frames;
+        subs->last_delay = runtime->delay;
+
+        /* realign last_frame_number */
+        subs->last_frame_number = usb_get_current_frame_number(subs->dev);
+        subs->last_frame_number &= 0xFF; /* keep 8 LSBs */
+
+        spin_unlock_irqrestore(&subs->lock, flags);
+        urb->transfer_buffer_length = bytes;
+        if (period_elapsed)
+                snd_pcm_period_elapsed(subs->pcm_substream);
+        return 0;
+}
 
-        dev = chip->dev;
+/*
+ * process after playback data complete
+ * - decrease the delay count again
+ */
+static int retire_playback_urb(struct snd_usb_substream *subs,
+                               struct snd_pcm_runtime *runtime,
+                               struct urb *urb)
+{
+        unsigned long flags;
+        int stride = runtime->frame_bits >> 3;
+        int processed = urb->transfer_buffer_length / stride;
+        int est_delay;
 
-        /* parse the interface's altsettings */
-        iface = usb_ifnum_to_if(dev, iface_no);
+        spin_lock_irqsave(&subs->lock, flags);
 
-        num = iface->num_altsetting;
+        est_delay = snd_usb_pcm_delay(subs, runtime->rate);
+        /* update delay with exact number of samples played */
+        if (processed > subs->last_delay)
+                subs->last_delay = 0;
+        else
+                subs->last_delay -= processed;
+        runtime->delay = subs->last_delay;
 
         /*
-         * Dallas DS4201 workaround: It presents 5 altsettings, but the last
-         * one misses syncpipe, and does not produce any sound.
+         * Report when delay estimate is off by more than 2ms.
+         * The error should be lower than 2ms since the estimate relies
+         * on two reads of a counter updated every ms.
          */
-        if (chip->usb_id == USB_ID(0x04fa, 0x4201))
-                num = 4;
-
-        for (i = 0; i < num; i++) {
-                alts = &iface->altsetting[i];
-                altsd = get_iface_desc(alts);
-                protocol = altsd->bInterfaceProtocol;
-                /* skip invalid one */
-                if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
-                     altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
-                    (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
-                     altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
-                    altsd->bNumEndpoints < 1 ||
-                    le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
-                        continue;
-                /* must be isochronous */
-                if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
-                    USB_ENDPOINT_XFER_ISOC)
-                        continue;
-                /* check direction */
-                stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
-                        SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
-                altno = altsd->bAlternateSetting;
-
-                if (snd_usb_apply_interface_quirk(chip, iface_no, altno))
-                        continue;
-
-                /* get audio formats */
-                switch (protocol) {
-                default:
-                        snd_printdd(KERN_WARNING "%d:%u:%d: unknown interface protocol %#02x, assuming v1\n",
-                                    dev->devnum, iface_no, altno, protocol);
-                        protocol = UAC_VERSION_1;
-                        /* fall through */
-
-                case UAC_VERSION_1: {
-                        struct uac1_as_header_descriptor *as =
-                                snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
-
-                        if (!as) {
-                                snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
-                                           dev->devnum, iface_no, altno);
-                                continue;
-                        }
+        if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2)
+                snd_printk(KERN_DEBUG "delay: estimated %d, actual %d\n",
+                        est_delay, subs->last_delay);
 
-                        if (as->bLength < sizeof(*as)) {
-                                snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
-                                           dev->devnum, iface_no, altno);
-                                continue;
-                        }
+        spin_unlock_irqrestore(&subs->lock, flags);
+        return 0;
+}
 
-                        format = le16_to_cpu(as->wFormatTag); /* remember the format value */
-                        break;
-                }
+static const char *usb_error_string(int err)
+{
+        switch (err) {
+        case -ENODEV:
+                return "no device";
+        case -ENOENT:
+                return "endpoint not enabled";
+        case -EPIPE:
+                return "endpoint stalled";
+        case -ENOSPC:
+                return "not enough bandwidth";
+        case -ESHUTDOWN:
+                return "device disabled";
+        case -EHOSTUNREACH:
+                return "device suspended";
+        case -EINVAL:
+        case -EAGAIN:
+        case -EFBIG:
+        case -EMSGSIZE:
+                return "internal error";
+        default:
+                return "unknown error";
+        }
+}
 
-                case UAC_VERSION_2: {
-                        struct uac2_input_terminal_descriptor *input_term;
-                        struct uac2_output_terminal_descriptor *output_term;
-                        struct uac2_as_header_descriptor *as =
-                                snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
+/*
+ * set up and start data/sync urbs
+ */
+static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
+{
+        unsigned int i;
+        int err;
 
-                        if (!as) {
-                                snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
-                                           dev->devnum, iface_no, altno);
-                                continue;
+        if (subs->stream->chip->shutdown)
+                return -EBADFD;
+
+        for (i = 0; i < subs->nurbs; i++) {
+                if (snd_BUG_ON(!subs->dataurb[i].urb))
+                        return -EINVAL;
+                if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
+                        snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
+                        goto __error;
+                }
+        }
+        if (subs->syncpipe) {
+                for (i = 0; i < SYNC_URBS; i++) {
+                        if (snd_BUG_ON(!subs->syncurb[i].urb))
+                                return -EINVAL;
+                        if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
+                                snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
+                                goto __error;
                         }
+                }
+        }
 
-                        if (as->bLength < sizeof(*as)) {
-                                snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
-                                           dev->devnum, iface_no, altno);
-                                continue;
+        subs->active_mask = 0;
+        subs->unlink_mask = 0;
+        subs->running = 1;
+        for (i = 0; i < subs->nurbs; i++) {
+                err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
+                if (err < 0) {
+                        snd_printk(KERN_ERR "cannot submit datapipe "
+                                   "for urb %d, error %d: %s\n",
+                                   i, err, usb_error_string(err));
+                        goto __error;
+                }
+                set_bit(i, &subs->active_mask);
+        }
+        if (subs->syncpipe) {
+                for (i = 0; i < SYNC_URBS; i++) {
+                        err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
+                        if (err < 0) {
+                                snd_printk(KERN_ERR "cannot submit syncpipe "
+                                           "for urb %d, error %d: %s\n",
+                                           i, err, usb_error_string(err));
+                                goto __error;
                         }
+                        set_bit(i + 16, &subs->active_mask);
+                }
+        }
+        return 0;
 
-                        num_channels = as->bNrChannels;
-                        format = le32_to_cpu(as->bmFormats);
+ __error:
+        // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
+        deactivate_urbs(subs, 0, 0);
+        return -EPIPE;
+}
 
-                        /* lookup the terminal associated to this interface
-                         * to extract the clock */
-                        input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf,
-                                                                            as->bTerminalLink);
-                        if (input_term) {
-                                clock = input_term->bCSourceID;
-                                break;
-                        }
 
-                        output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf,
-                                                                              as->bTerminalLink);
-                        if (output_term) {
-                                clock = output_term->bCSourceID;
-                                break;
-                        }
+/*
+ */
+static struct snd_urb_ops audio_urb_ops[2] = {
+        {
+                .prepare =      prepare_nodata_playback_urb,
+                .retire =       retire_playback_urb,
+                .prepare_sync = prepare_playback_sync_urb,
+                .retire_sync =  retire_playback_sync_urb,
+        },
+        {
+                .prepare =      prepare_capture_urb,
+                .retire =       retire_capture_urb,
+                .prepare_sync = prepare_capture_sync_urb,
+                .retire_sync =  retire_capture_sync_urb,
+        },
+};
 
-                        snd_printk(KERN_ERR "%d:%u:%d : bogus bTerminalLink %d\n",
-                                   dev->devnum, iface_no, altno, as->bTerminalLink);
-                        continue;
-                }
-                }
+/*
+ * initialize the substream instance.
+ */
 
-                /* get format type */
-                fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE);
-                if (!fmt) {
-                        snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n",
-                                   dev->devnum, iface_no, altno);
-                        continue;
-                }
-                if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) ||
-                    ((protocol == UAC_VERSION_2) && (fmt->bLength < 6))) {
-                        snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
-                                   dev->devnum, iface_no, altno);
-                        continue;
-                }
+void snd_usb_init_substream(struct snd_usb_stream *as,
+                            int stream, struct audioformat *fp)
+{
+        struct snd_usb_substream *subs = &as->substream[stream];
+
+        INIT_LIST_HEAD(&subs->fmt_list);
+        spin_lock_init(&subs->lock);
+
+        subs->stream = as;
+        subs->direction = stream;
+        subs->dev = as->chip->dev;
+        subs->txfr_quirk = as->chip->txfr_quirk;
+        subs->ops = audio_urb_ops[stream];
+        if (snd_usb_get_speed(subs->dev) >= USB_SPEED_HIGH)
+                subs->ops.prepare_sync = prepare_capture_sync_urb_hs;
+
+        snd_usb_set_pcm_ops(as->pcm, stream);
+
+        list_add_tail(&fp->list, &subs->fmt_list);
+        subs->formats |= fp->formats;
+        subs->endpoint = fp->endpoint;
+        subs->num_formats++;
+        subs->fmt_type = fp->fmt_type;
+}
 
-                /*
-                 * Blue Microphones workaround: The last altsetting is identical
-                 * with the previous one, except for a larger packet size, but
-                 * is actually a mislabeled two-channel setting; ignore it.
-                 */
-                if (fmt->bNrChannels == 1 &&
-                    fmt->bSubframeSize == 2 &&
-                    altno == 2 && num == 3 &&
-                    fp && fp->altsetting == 1 && fp->channels == 1 &&
-                    fp->formats == SNDRV_PCM_FMTBIT_S16_LE &&
-                    protocol == UAC_VERSION_1 &&
-                    le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) ==
-                                                        fp->maxpacksize * 2)
-                        continue;
-
-                fp = kzalloc(sizeof(*fp), GFP_KERNEL);
-                if (! fp) {
-                        snd_printk(KERN_ERR "cannot malloc\n");
-                        return -ENOMEM;
-                }
+int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+        struct snd_usb_substream *subs = substream->runtime->private_data;
 
-                fp->iface = iface_no;
-                fp->altsetting = altno;
-                fp->altset_idx = i;
-                fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
-                fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
-                fp->datainterval = snd_usb_parse_datainterval(chip, alts);
-                fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
-                /* num_channels is only set for v2 interfaces */
-                fp->channels = num_channels;
-                if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
-                        fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
-                                        * (fp->maxpacksize & 0x7ff);
-                fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no);
-                fp->clock = clock;
-
-                /* some quirks for attributes here */
-
-                switch (chip->usb_id) {
-                case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
-                        /* Optoplay sets the sample rate attribute although
-                         * it seems not supporting it in fact.
-                         */
-                        fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
-                        break;
-                case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
-                case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
-                        /* doesn't set the sample rate attribute, but supports it */
-                        fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
-                        break;
-                case USB_ID(0x0763, 0x2001):  /* M-Audio Quattro USB */
-                case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
-                case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
-                case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
-                                                an older model 77d:223) */
-                /*
-                 * plantronics headset and Griffin iMic have set adaptive-in
-                 * although it's really not...
-                 */
-                        fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
-                        if (stream == SNDRV_PCM_STREAM_PLAYBACK)
-                                fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
-                        else
-                                fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
-                        break;
-                }
+        switch (cmd) {
+        case SNDRV_PCM_TRIGGER_START:
+        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+                subs->ops.prepare = prepare_playback_urb;
+                return 0;
+        case SNDRV_PCM_TRIGGER_STOP:
+                return deactivate_urbs(subs, 0, 0);
+        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+                subs->ops.prepare = prepare_nodata_playback_urb;
+                return 0;
+        }
 
-                /* ok, let's parse further... */
-                if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) {
-                        kfree(fp->rate_table);
-                        kfree(fp);
-                        fp = NULL;
-                        continue;
-                }
+        return -EINVAL;
+}
 
-                snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint);
-                err = snd_usb_add_audio_endpoint(chip, stream, fp);
-                if (err < 0) {
-                        kfree(fp->rate_table);
-                        kfree(fp);
-                        return err;
-                }
-                /* try to set the interface... */
-                usb_set_interface(chip->dev, iface_no, altno);
-                snd_usb_init_pitch(chip, iface_no, alts, fp);
-                snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max);
+int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+        struct snd_usb_substream *subs = substream->runtime->private_data;
+
+        switch (cmd) {
+        case SNDRV_PCM_TRIGGER_START:
+                subs->ops.retire = retire_capture_urb;
+                return start_urbs(subs, substream->runtime);
+        case SNDRV_PCM_TRIGGER_STOP:
+                return deactivate_urbs(subs, 0, 0);
+        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+                subs->ops.retire = retire_paused_capture_urb;
+                return 0;
+        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+                subs->ops.retire = retire_capture_urb;
+                return 0;
         }
+
+        return -EINVAL;
+}
+
+int snd_usb_substream_prepare(struct snd_usb_substream *subs,
+                              struct snd_pcm_runtime *runtime)
+{
+        /* clear urbs (to be sure) */
+        deactivate_urbs(subs, 0, 1);
+        wait_clear_urbs(subs);
+
+        /* for playback, submit the URBs now; otherwise, the first hwptr_done
+         * updates for all URBs would happen at the same time when starting */
+        if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+                subs->ops.prepare = prepare_nodata_playback_urb;
+                return start_urbs(subs, runtime);
+        }
+
         return 0;
 }
 
diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h
index 64dd0db023b2..88eb63a636eb 100644
--- a/sound/usb/endpoint.h
+++ b/sound/usb/endpoint.h
@@ -1,11 +1,21 @@
 #ifndef __USBAUDIO_ENDPOINT_H
 #define __USBAUDIO_ENDPOINT_H
 
-int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip,
-                                  int iface_no);
+void snd_usb_init_substream(struct snd_usb_stream *as,
+                            int stream,
+                            struct audioformat *fp);
 
-int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip,
-                               int stream,
-                               struct audioformat *fp);
+int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
+                                unsigned int period_bytes,
+                                unsigned int rate,
+                                unsigned int frame_bits);
+
+void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force);
+
+int snd_usb_substream_prepare(struct snd_usb_substream *subs,
+                              struct snd_pcm_runtime *runtime);
+
+int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd);
+int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd);
 
 #endif /* __USBAUDIO_ENDPOINT_H */
diff --git a/sound/usb/format.c b/sound/usb/format.c
index 8d042dce0d16..89421d176570 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -286,7 +286,7 @@ static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
                               UAC2_CS_CONTROL_SAM_FREQ << 8,
                               snd_usb_ctrl_intf(chip) | (clock << 8),
-                              tmp, sizeof(tmp), 1000);
+                              tmp, sizeof(tmp));
 
         if (ret < 0) {
                 snd_printk(KERN_ERR "%s(): unable to retrieve number of sample rates (clock %d)\n",
@@ -307,7 +307,7 @@ static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
                               USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
                               UAC2_CS_CONTROL_SAM_FREQ << 8,
                               snd_usb_ctrl_intf(chip) | (clock << 8),
-                              data, data_size, 1000);
+                              data, data_size);
 
         if (ret < 0) {
                 snd_printk(KERN_ERR "%s(): unable to retrieve sample rate range (clock %d)\n",
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index f280c1903c25..9eed8f40b179 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -81,7 +81,7 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype
  */
 int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
                     __u8 requesttype, __u16 value, __u16 index, void *data,
-                    __u16 size, int timeout)
+                    __u16 size)
 {
         int err;
         void *buf = NULL;
@@ -92,7 +92,7 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
                         return -ENOMEM;
         }
         err = usb_control_msg(dev, pipe, request, requesttype,
-                              value, index, buf, size, timeout);
+                              value, index, buf, size, 1000);
         if (size > 0) {
                 memcpy(data, buf, size);
                 kfree(buf);
diff --git a/sound/usb/helper.h b/sound/usb/helper.h
index 09bd943c43bf..805c300dd004 100644
--- a/sound/usb/helper.h
+++ b/sound/usb/helper.h
@@ -8,7 +8,7 @@ void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsub
 
 int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
                     __u8 request, __u8 requesttype, __u16 value, __u16 index,
-                    void *data, __u16 size, int timeout);
+                    void *data, __u16 size);
 
 unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
                                          struct usb_host_interface *alts);
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index f9289102886a..e21f026d9577 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -816,6 +816,22 @@ static struct usb_protocol_ops snd_usbmidi_raw_ops = {
         .output = snd_usbmidi_raw_output,
 };
 
+/*
+ * FTDI protocol: raw MIDI bytes, but input packets have two modem status bytes.
+ */
+
+static void snd_usbmidi_ftdi_input(struct snd_usb_midi_in_endpoint* ep,
+                                   uint8_t* buffer, int buffer_length)
+{
+        if (buffer_length > 2)
+                snd_usbmidi_input_data(ep, 0, buffer + 2, buffer_length - 2);
+}
+
+static struct usb_protocol_ops snd_usbmidi_ftdi_ops = {
+        .input = snd_usbmidi_ftdi_input,
+        .output = snd_usbmidi_raw_output,
+};
+
 static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep,
                                      uint8_t *buffer, int buffer_length)
 {
@@ -2163,6 +2179,17 @@ int snd_usbmidi_create(struct snd_card *card,
                 /* endpoint 1 is input-only */
                 endpoints[1].out_cables = 0;
                 break;
+        case QUIRK_MIDI_FTDI:
+                umidi->usb_protocol_ops = &snd_usbmidi_ftdi_ops;
+
+                /* set baud rate to 31250 (48 MHz / 16 / 96) */
+                err = usb_control_msg(umidi->dev, usb_sndctrlpipe(umidi->dev, 0),
+                                      3, 0x40, 0x60, 0, NULL, 0, 1000);
+                if (err < 0)
+                        break;
+
+                err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
+                break;
         default:
                 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
                 err = -ENXIO;
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index cdd19d7fe500..60f65ace7474 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -296,7 +296,7 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int v
                 if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
                                     USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
                                     validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
-                                    buf, val_len, 100) >= val_len) {
+                                    buf, val_len) >= val_len) {
                         *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
                         snd_usb_autosuspend(cval->mixer->chip);
                         return 0;
@@ -333,7 +333,7 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int v
         ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
                               USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
                               validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
-                              buf, size, 1000);
+                              buf, size);
         snd_usb_autosuspend(chip);
 
         if (ret < 0) {
@@ -445,7 +445,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
                                     usb_sndctrlpipe(chip->dev, 0), request,
                                     USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
                                     validx, snd_usb_ctrl_intf(chip) | (cval->id << 8),
-                                    buf, val_len, 100) >= 0) {
+                                    buf, val_len) >= 0) {
                         snd_usb_autosuspend(chip);
                         return 0;
                 }
@@ -881,8 +881,17 @@ static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_
                 uinfo->value.integer.min = 0;
                 uinfo->value.integer.max = 1;
         } else {
-                if (! cval->initialized)
-                        get_min_max(cval,  0);
+                if (!cval->initialized) {
+                        get_min_max(cval, 0);
+                        if (cval->initialized && cval->dBmin >= cval->dBmax) {
+                                kcontrol->vd[0].access &= 
+                                        ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+                                          SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK);
+                                snd_ctl_notify(cval->mixer->chip->card,
+                                               SNDRV_CTL_EVENT_MASK_INFO,
+                                               &kcontrol->id);
+                        }
+                }
                 uinfo->value.integer.min = 0;
                 uinfo->value.integer.max =
                         (cval->max - cval->min + cval->res - 1) / cval->res;
@@ -1250,7 +1259,7 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
                                 build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0);
                 }
         } else { /* UAC_VERSION_2 */
-                for (i = 0; i < 30/2; i++) {
+                for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) {
                         unsigned int ch_bits = 0;
                         unsigned int ch_read_only = 0;
 
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 3d0f4873112b..ab125ee0b0f0 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -190,18 +190,18 @@ static int snd_audigy2nx_led_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
                 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, 0, NULL, 0, 100);
+                              !value, 0, NULL, 0);
         /* USB X-Fi S51 Pro */
         if (mixer->chip->usb_id == USB_ID(0x041e, 0x30df))
                 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, 0, NULL, 0, 100);
+                              !value, 0, NULL, 0);
         else
                 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);
+                              value, index + 2, NULL, 0);
         if (err < 0)
                 return err;
         mixer->audigy2nx_leds[index] = value;
@@ -299,7 +299,7 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry,
                                       usb_rcvctrlpipe(mixer->chip->dev, 0),
                                       UAC_GET_MEM, USB_DIR_IN | USB_TYPE_CLASS |
                                       USB_RECIP_INTERFACE, 0,
-                                      jacks[i].unitid << 8, buf, 3, 100);
+                                      jacks[i].unitid << 8, buf, 3);
                 if (err == 3 && (buf[0] == 3 || buf[0] == 6))
                         snd_iprintf(buffer, "%02x %02x\n", buf[1], buf[2]);
                 else
@@ -332,7 +332,7 @@ static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol,
         err = snd_usb_ctl_msg(mixer->chip->dev,
                               usb_sndctrlpipe(mixer->chip->dev, 0), 0x08,
                               USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
-                              50, 0, &new_status, 1, 100);
+                              50, 0, &new_status, 1);
         if (err < 0)
                 return err;
         mixer->xonar_u1_status = new_status;
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index b8dcbf407bbb..0220b0f335b9 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -28,12 +28,36 @@
 #include "card.h"
 #include "quirks.h"
 #include "debug.h"
-#include "urb.h"
+#include "endpoint.h"
 #include "helper.h"
 #include "pcm.h"
 #include "clock.h"
 #include "power.h"
 
+/* return the estimated delay based on USB frame counters */
+snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs,
+                                    unsigned int rate)
+{
+        int current_frame_number;
+        int frame_diff;
+        int est_delay;
+
+        current_frame_number = usb_get_current_frame_number(subs->dev);
+        /*
+         * HCD implementations use different widths, use lower 8 bits.
+         * The delay will be managed up to 256ms, which is more than
+         * enough
+         */
+        frame_diff = (current_frame_number - subs->last_frame_number) & 0xff;
+
+        /* Approximation based on number of samples per USB frame (ms),
+           some truncation for 44.1 but the estimate is good enough */
+        est_delay =  subs->last_delay - (frame_diff * rate / 1000);
+        if (est_delay < 0)
+                est_delay = 0;
+        return est_delay;
+}
+
 /*
  * return the current pcm pointer.  just based on the hwptr_done value.
  */
@@ -45,6 +69,8 @@ static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream
         subs = (struct snd_usb_substream *)substream->runtime->private_data;
         spin_lock(&subs->lock);
         hwptr_done = subs->hwptr_done;
+        substream->runtime->delay = snd_usb_pcm_delay(subs,
+                                                substream->runtime->rate);
         spin_unlock(&subs->lock);
         return hwptr_done / (substream->runtime->frame_bits >> 3);
 }
@@ -126,7 +152,7 @@ static int init_pitch_v1(struct snd_usb_audio *chip, int iface,
         if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
                                    USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
                                    UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep,
-                                   data, sizeof(data), 1000)) < 0) {
+                                   data, sizeof(data))) < 0) {
                 snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
                            dev->devnum, iface, ep);
                 return err;
@@ -150,7 +176,7 @@ static int init_pitch_v2(struct snd_usb_audio *chip, int iface,
         if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
                                    USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT,
                                    UAC2_EP_CS_PITCH << 8, 0,
-                                   data, sizeof(data), 1000)) < 0) {
+                                   data, sizeof(data))) < 0) {
                 snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n",
                            dev->devnum, iface, fmt->altsetting);
                 return err;
@@ -417,6 +443,8 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
         subs->hwptr_done = 0;
         subs->transfer_done = 0;
         subs->phase = 0;
+        subs->last_delay = 0;
+        subs->last_frame_number = 0;
         runtime->delay = 0;
 
         return snd_usb_substream_prepare(subs, runtime);
diff --git a/sound/usb/pcm.h b/sound/usb/pcm.h
index ed3e283f618d..df7a003682ad 100644
--- a/sound/usb/pcm.h
+++ b/sound/usb/pcm.h
@@ -1,6 +1,9 @@
 #ifndef __USBAUDIO_PCM_H
 #define __USBAUDIO_PCM_H
 
+snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs,
+                                    unsigned int rate);
+
 void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream);
 
 int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface,
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index a42e3ef3832d..b61945f3af9e 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -39,6 +39,17 @@
         .idProduct = prod, \
         .bInterfaceClass = USB_CLASS_VENDOR_SPEC
 
+/* FTDI devices */
+{
+        USB_DEVICE(0x0403, 0xb8d8),
+        .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+                /* .vendor_name = "STARR LABS", */
+                /* .product_name = "Starr Labs MIDI USB device", */
+                .ifnum = 0,
+                .type = QUIRK_MIDI_FTDI
+        }
+},
+
 /* Creative/Toshiba Multimedia Center SB-0500 */
 {
         USB_DEVICE(0x041e, 0x3048),
@@ -1678,6 +1689,20 @@ YAMAHA_DEVICE(0x7010, "UB99"),
         }
 },
 {
+        /* Added support for Roland UM-ONE which differs from UM-1 */
+        USB_DEVICE(0x0582, 0x012a),
+        .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+                /* .vendor_name = "ROLAND", */
+                /* .product_name = "UM-ONE", */
+                .ifnum = 0,
+                .type = QUIRK_MIDI_FIXED_ENDPOINT,
+                .data = & (const struct snd_usb_midi_endpoint_info) {
+                        .out_cables = 0x0001,
+                        .in_cables  = 0x0003
+                }
+        }
+},
+{
         USB_DEVICE(0x0582, 0x011e),
         .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
                 /* .vendor_name = "BOSS", */
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 81e07d842581..2e5bc7344026 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -34,6 +34,7 @@
 #include "endpoint.h"
 #include "pcm.h"
 #include "clock.h"
+#include "stream.h"
 
 /*
  * handle the quirks for the contained interfaces
@@ -106,7 +107,7 @@ static int create_standard_audio_quirk(struct snd_usb_audio *chip,
 
         alts = &iface->altsetting[0];
         altsd = get_iface_desc(alts);
-        err = snd_usb_parse_audio_endpoints(chip, altsd->bInterfaceNumber);
+        err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber);
         if (err < 0) {
                 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
                            altsd->bInterfaceNumber, err);
@@ -147,7 +148,7 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
 
         stream = (fp->endpoint & USB_DIR_IN)
                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
-        err = snd_usb_add_audio_endpoint(chip, stream, fp);
+        err = snd_usb_add_audio_stream(chip, stream, fp);
         if (err < 0) {
                 kfree(fp);
                 kfree(rate_table);
@@ -254,7 +255,7 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
 
         stream = (fp->endpoint & USB_DIR_IN)
                 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
-        err = snd_usb_add_audio_endpoint(chip, stream, fp);
+        err = snd_usb_add_audio_stream(chip, stream, fp);
         if (err < 0) {
                 kfree(fp);
                 return err;
@@ -306,6 +307,7 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip,
                 [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
                 [QUIRK_MIDI_CME] = create_any_midi_quirk,
                 [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
+                [QUIRK_MIDI_FTDI] = create_any_midi_quirk,
                 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
                 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
                 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
@@ -338,7 +340,7 @@ static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interfac
                 snd_printdd("sending Extigy boot sequence...\n");
                 /* Send message to force it to reconnect with full interface. */
                 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
-                                      0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
+                                      0x10, 0x43, 0x0001, 0x000a, NULL, 0);
                 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
                 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
                                 &dev->descriptor, sizeof(dev->descriptor));
@@ -359,11 +361,11 @@ static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
 
         snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
-                        0, 0, &buf, 1, 1000);
+                        0, 0, &buf, 1);
         if (buf == 0) {
                 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
                                 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
-                                1, 2000, NULL, 0, 1000);
+                                1, 2000, NULL, 0);
                 return -ENODEV;
         }
         return 0;
@@ -406,7 +408,7 @@ static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 valu
         buf[3] = reg;
         return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
                                USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
-                               0, 0, &buf, 4, 1000);
+                               0, 0, &buf, 4);
 }
 
 static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
new file mode 100644
index 000000000000..5ff8010b2d6f
--- /dev/null
+++ b/sound/usb/stream.c
@@ -0,0 +1,452 @@
+/*
+ *   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/init.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "usbaudio.h"
+#include "card.h"
+#include "proc.h"
+#include "quirks.h"
+#include "endpoint.h"
+#include "pcm.h"
+#include "helper.h"
+#include "format.h"
+#include "clock.h"
+#include "stream.h"
+
+/*
+ * free a substream
+ */
+static void free_substream(struct snd_usb_substream *subs)
+{
+        struct list_head *p, *n;
+
+        if (!subs->num_formats)
+                return; /* not initialized */
+        list_for_each_safe(p, n, &subs->fmt_list) {
+                struct audioformat *fp = list_entry(p, struct audioformat, list);
+                kfree(fp->rate_table);
+                kfree(fp);
+        }
+        kfree(subs->rate_list.list);
+}
+
+
+/*
+ * free a usb stream instance
+ */
+static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
+{
+        free_substream(&stream->substream[0]);
+        free_substream(&stream->substream[1]);
+        list_del(&stream->list);
+        kfree(stream);
+}
+
+static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
+{
+        struct snd_usb_stream *stream = pcm->private_data;
+        if (stream) {
+                stream->pcm = NULL;
+                snd_usb_audio_stream_free(stream);
+        }
+}
+
+
+/*
+ * add this endpoint to the chip instance.
+ * if a stream with the same endpoint already exists, append to it.
+ * if not, create a new pcm stream.
+ */
+int snd_usb_add_audio_stream(struct snd_usb_audio *chip,
+                             int stream,
+                             struct audioformat *fp)
+{
+        struct list_head *p;
+        struct snd_usb_stream *as;
+        struct snd_usb_substream *subs;
+        struct snd_pcm *pcm;
+        int err;
+
+        list_for_each(p, &chip->pcm_list) {
+                as = list_entry(p, struct snd_usb_stream, list);
+                if (as->fmt_type != fp->fmt_type)
+                        continue;
+                subs = &as->substream[stream];
+                if (!subs->endpoint)
+                        continue;
+                if (subs->endpoint == fp->endpoint) {
+                        list_add_tail(&fp->list, &subs->fmt_list);
+                        subs->num_formats++;
+                        subs->formats |= fp->formats;
+                        return 0;
+                }
+        }
+        /* look for an empty stream */
+        list_for_each(p, &chip->pcm_list) {
+                as = list_entry(p, struct snd_usb_stream, list);
+                if (as->fmt_type != fp->fmt_type)
+                        continue;
+                subs = &as->substream[stream];
+                if (subs->endpoint)
+                        continue;
+                err = snd_pcm_new_stream(as->pcm, stream, 1);
+                if (err < 0)
+                        return err;
+                snd_usb_init_substream(as, stream, fp);
+                return 0;
+        }
+
+        /* create a new pcm */
+        as = kzalloc(sizeof(*as), GFP_KERNEL);
+        if (!as)
+                return -ENOMEM;
+        as->pcm_index = chip->pcm_devs;
+        as->chip = chip;
+        as->fmt_type = fp->fmt_type;
+        err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
+                          stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
+                          stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
+                          &pcm);
+        if (err < 0) {
+                kfree(as);
+                return err;
+        }
+        as->pcm = pcm;
+        pcm->private_data = as;
+        pcm->private_free = snd_usb_audio_pcm_free;
+        pcm->info_flags = 0;
+        if (chip->pcm_devs > 0)
+                sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
+        else
+                strcpy(pcm->name, "USB Audio");
+
+        snd_usb_init_substream(as, stream, fp);
+
+        list_add(&as->list, &chip->pcm_list);
+        chip->pcm_devs++;
+
+        snd_usb_proc_pcm_format_add(as);
+
+        return 0;
+}
+
+static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip,
+                                         struct usb_host_interface *alts,
+                                         int protocol, int iface_no)
+{
+        /* parsed with a v1 header here. that's ok as we only look at the
+         * header first which is the same for both versions */
+        struct uac_iso_endpoint_descriptor *csep;
+        struct usb_interface_descriptor *altsd = get_iface_desc(alts);
+        int attributes = 0;
+
+        csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
+
+        /* Creamware Noah has this descriptor after the 2nd endpoint */
+        if (!csep && altsd->bNumEndpoints >= 2)
+                csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
+
+        if (!csep || csep->bLength < 7 ||
+            csep->bDescriptorSubtype != UAC_EP_GENERAL) {
+                snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
+                           " class specific endpoint descriptor\n",
+                           chip->dev->devnum, iface_no,
+                           altsd->bAlternateSetting);
+                return 0;
+        }
+
+        if (protocol == UAC_VERSION_1) {
+                attributes = csep->bmAttributes;
+        } else {
+                struct uac2_iso_endpoint_descriptor *csep2 =
+                        (struct uac2_iso_endpoint_descriptor *) csep;
+
+                attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX;
+
+                /* emulate the endpoint attributes of a v1 device */
+                if (csep2->bmControls & UAC2_CONTROL_PITCH)
+                        attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL;
+        }
+
+        return attributes;
+}
+
+static struct uac2_input_terminal_descriptor *
+        snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface,
+                                               int terminal_id)
+{
+        struct uac2_input_terminal_descriptor *term = NULL;
+
+        while ((term = snd_usb_find_csint_desc(ctrl_iface->extra,
+                                               ctrl_iface->extralen,
+                                               term, UAC_INPUT_TERMINAL))) {
+                if (term->bTerminalID == terminal_id)
+                        return term;
+        }
+
+        return NULL;
+}
+
+static struct uac2_output_terminal_descriptor *
+        snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface,
+                                                int terminal_id)
+{
+        struct uac2_output_terminal_descriptor *term = NULL;
+
+        while ((term = snd_usb_find_csint_desc(ctrl_iface->extra,
+                                               ctrl_iface->extralen,
+                                               term, UAC_OUTPUT_TERMINAL))) {
+                if (term->bTerminalID == terminal_id)
+                        return term;
+        }
+
+        return NULL;
+}
+
+int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
+{
+        struct usb_device *dev;
+        struct usb_interface *iface;
+        struct usb_host_interface *alts;
+        struct usb_interface_descriptor *altsd;
+        int i, altno, err, stream;
+        int format = 0, num_channels = 0;
+        struct audioformat *fp = NULL;
+        int num, protocol, clock = 0;
+        struct uac_format_type_i_continuous_descriptor *fmt;
+
+        dev = chip->dev;
+
+        /* parse the interface's altsettings */
+        iface = usb_ifnum_to_if(dev, iface_no);
+
+        num = iface->num_altsetting;
+
+        /*
+         * Dallas DS4201 workaround: It presents 5 altsettings, but the last
+         * one misses syncpipe, and does not produce any sound.
+         */
+        if (chip->usb_id == USB_ID(0x04fa, 0x4201))
+                num = 4;
+
+        for (i = 0; i < num; i++) {
+                alts = &iface->altsetting[i];
+                altsd = get_iface_desc(alts);
+                protocol = altsd->bInterfaceProtocol;
+                /* skip invalid one */
+                if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
+                     altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
+                    (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
+                     altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
+                    altsd->bNumEndpoints < 1 ||
+                    le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
+                        continue;
+                /* must be isochronous */
+                if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
+                    USB_ENDPOINT_XFER_ISOC)
+                        continue;
+                /* check direction */
+                stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
+                        SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
+                altno = altsd->bAlternateSetting;
+
+                if (snd_usb_apply_interface_quirk(chip, iface_no, altno))
+                        continue;
+
+                /* get audio formats */
+                switch (protocol) {
+                default:
+                        snd_printdd(KERN_WARNING "%d:%u:%d: unknown interface protocol %#02x, assuming v1\n",
+                                    dev->devnum, iface_no, altno, protocol);
+                        protocol = UAC_VERSION_1;
+                        /* fall through */
+
+                case UAC_VERSION_1: {
+                        struct uac1_as_header_descriptor *as =
+                                snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
+
+                        if (!as) {
+                                snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
+                                           dev->devnum, iface_no, altno);
+                                continue;
+                        }
+
+                        if (as->bLength < sizeof(*as)) {
+                                snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
+                                           dev->devnum, iface_no, altno);
+                                continue;
+                        }
+
+                        format = le16_to_cpu(as->wFormatTag); /* remember the format value */
+                        break;
+                }
+
+                case UAC_VERSION_2: {
+                        struct uac2_input_terminal_descriptor *input_term;
+                        struct uac2_output_terminal_descriptor *output_term;
+                        struct uac2_as_header_descriptor *as =
+                                snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL);
+
+                        if (!as) {
+                                snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n",
+                                           dev->devnum, iface_no, altno);
+                                continue;
+                        }
+
+                        if (as->bLength < sizeof(*as)) {
+                                snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n",
+                                           dev->devnum, iface_no, altno);
+                                continue;
+                        }
+
+                        num_channels = as->bNrChannels;
+                        format = le32_to_cpu(as->bmFormats);
+
+                        /* lookup the terminal associated to this interface
+                         * to extract the clock */
+                        input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf,
+                                                                            as->bTerminalLink);
+                        if (input_term) {
+                                clock = input_term->bCSourceID;
+                                break;
+                        }
+
+                        output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf,
+                                                                              as->bTerminalLink);
+                        if (output_term) {
+                                clock = output_term->bCSourceID;
+                                break;
+                        }
+
+                        snd_printk(KERN_ERR "%d:%u:%d : bogus bTerminalLink %d\n",
+                                   dev->devnum, iface_no, altno, as->bTerminalLink);
+                        continue;
+                }
+                }
+
+                /* get format type */
+                fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE);
+                if (!fmt) {
+                        snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n",
+                                   dev->devnum, iface_no, altno);
+                        continue;
+                }
+                if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) ||
+                    ((protocol == UAC_VERSION_2) && (fmt->bLength < 6))) {
+                        snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n",
+                                   dev->devnum, iface_no, altno);
+                        continue;
+                }
+
+                /*
+                 * Blue Microphones workaround: The last altsetting is identical
+                 * with the previous one, except for a larger packet size, but
+                 * is actually a mislabeled two-channel setting; ignore it.
+                 */
+                if (fmt->bNrChannels == 1 &&
+                    fmt->bSubframeSize == 2 &&
+                    altno == 2 && num == 3 &&
+                    fp && fp->altsetting == 1 && fp->channels == 1 &&
+                    fp->formats == SNDRV_PCM_FMTBIT_S16_LE &&
+                    protocol == UAC_VERSION_1 &&
+                    le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) ==
+                                                        fp->maxpacksize * 2)
+                        continue;
+
+                fp = kzalloc(sizeof(*fp), GFP_KERNEL);
+                if (! fp) {
+                        snd_printk(KERN_ERR "cannot malloc\n");
+                        return -ENOMEM;
+                }
+
+                fp->iface = iface_no;
+                fp->altsetting = altno;
+                fp->altset_idx = i;
+                fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
+                fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
+                fp->datainterval = snd_usb_parse_datainterval(chip, alts);
+                fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
+                /* num_channels is only set for v2 interfaces */
+                fp->channels = num_channels;
+                if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
+                        fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
+                                        * (fp->maxpacksize & 0x7ff);
+                fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no);
+                fp->clock = clock;
+
+                /* some quirks for attributes here */
+
+                switch (chip->usb_id) {
+                case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */
+                        /* Optoplay sets the sample rate attribute although
+                         * it seems not supporting it in fact.
+                         */
+                        fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE;
+                        break;
+                case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */
+                case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
+                        /* doesn't set the sample rate attribute, but supports it */
+                        fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE;
+                        break;
+                case USB_ID(0x0763, 0x2001):  /* M-Audio Quattro USB */
+                case USB_ID(0x0763, 0x2012):  /* M-Audio Fast Track Pro USB */
+                case USB_ID(0x047f, 0x0ca1): /* plantronics headset */
+                case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is
+                                                an older model 77d:223) */
+                /*
+                 * plantronics headset and Griffin iMic have set adaptive-in
+                 * although it's really not...
+                 */
+                        fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
+                        if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+                                fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE;
+                        else
+                                fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC;
+                        break;
+                }
+
+                /* ok, let's parse further... */
+                if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) {
+                        kfree(fp->rate_table);
+                        kfree(fp);
+                        fp = NULL;
+                        continue;
+                }
+
+                snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint);
+                err = snd_usb_add_audio_stream(chip, stream, fp);
+                if (err < 0) {
+                        kfree(fp->rate_table);
+                        kfree(fp);
+                        return err;
+                }
+                /* try to set the interface... */
+                usb_set_interface(chip->dev, iface_no, altno);
+                snd_usb_init_pitch(chip, iface_no, alts, fp);
+                snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max);
+        }
+        return 0;
+}
+
diff --git a/sound/usb/stream.h b/sound/usb/stream.h
new file mode 100644
index 000000000000..c97f679fc84f
--- /dev/null
+++ b/sound/usb/stream.h
@@ -0,0 +1,12 @@
+#ifndef __USBAUDIO_STREAM_H
+#define __USBAUDIO_STREAM_H
+
+int snd_usb_parse_audio_interface(struct snd_usb_audio *chip,
+                                  int iface_no);
+
+int snd_usb_add_audio_stream(struct snd_usb_audio *chip,
+                             int stream,
+                             struct audioformat *fp);
+
+#endif /* __USBAUDIO_STREAM_H */
+
diff --git a/sound/usb/urb.c b/sound/usb/urb.c
deleted file mode 100644
index e184349aee83..000000000000
--- a/sound/usb/urb.c
+++ /dev/null
@@ -1,941 +0,0 @@
-/*
- *   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/gfp.h>
-#include <linux/init.h>
-#include <linux/usb.h>
-#include <linux/usb/audio.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-
-#include "usbaudio.h"
-#include "helper.h"
-#include "card.h"
-#include "urb.h"
-#include "pcm.h"
-
-/*
- * convert a sampling rate into our full speed format (fs/1000 in Q16.16)
- * this will overflow at approx 524 kHz
- */
-static inline unsigned get_usb_full_speed_rate(unsigned int rate)
-{
-        return ((rate << 13) + 62) / 125;
-}
-
-/*
- * convert a sampling rate into USB high speed format (fs/8000 in Q16.16)
- * this will overflow at approx 4 MHz
- */
-static inline unsigned get_usb_high_speed_rate(unsigned int rate)
-{
-        return ((rate << 10) + 62) / 125;
-}
-
-/*
- * unlink active urbs.
- */
-static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
-{
-        struct snd_usb_audio *chip = subs->stream->chip;
-        unsigned int i;
-        int async;
-
-        subs->running = 0;
-
-        if (!force && subs->stream->chip->shutdown) /* to be sure... */
-                return -EBADFD;
-
-        async = !can_sleep && chip->async_unlink;
-
-        if (!async && in_interrupt())
-                return 0;
-
-        for (i = 0; i < subs->nurbs; i++) {
-                if (test_bit(i, &subs->active_mask)) {
-                        if (!test_and_set_bit(i, &subs->unlink_mask)) {
-                                struct urb *u = subs->dataurb[i].urb;
-                                if (async)
-                                        usb_unlink_urb(u);
-                                else
-                                        usb_kill_urb(u);
-                        }
-                }
-        }
-        if (subs->syncpipe) {
-                for (i = 0; i < SYNC_URBS; i++) {
-                        if (test_bit(i+16, &subs->active_mask)) {
-                                if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
-                                        struct urb *u = subs->syncurb[i].urb;
-                                        if (async)
-                                                usb_unlink_urb(u);
-                                        else
-                                                usb_kill_urb(u);
-                                }
-                        }
-                }
-        }
-        return 0;
-}
-
-
-/*
- * release a urb data
- */
-static void release_urb_ctx(struct snd_urb_ctx *u)
-{
-        if (u->urb) {
-                if (u->buffer_size)
-                        usb_free_coherent(u->subs->dev, u->buffer_size,
-                                        u->urb->transfer_buffer,
-                                        u->urb->transfer_dma);
-                usb_free_urb(u->urb);
-                u->urb = NULL;
-        }
-}
-
-/*
- *  wait until all urbs are processed.
- */
-static int wait_clear_urbs(struct snd_usb_substream *subs)
-{
-        unsigned long end_time = jiffies + msecs_to_jiffies(1000);
-        unsigned int i;
-        int alive;
-
-        do {
-                alive = 0;
-                for (i = 0; i < subs->nurbs; i++) {
-                        if (test_bit(i, &subs->active_mask))
-                                alive++;
-                }
-                if (subs->syncpipe) {
-                        for (i = 0; i < SYNC_URBS; i++) {
-                                if (test_bit(i + 16, &subs->active_mask))
-                                        alive++;
-                        }
-                }
-                if (! alive)
-                        break;
-                schedule_timeout_uninterruptible(1);
-        } while (time_before(jiffies, end_time));
-        if (alive)
-                snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
-        return 0;
-}
-
-/*
- * release a substream
- */
-void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force)
-{
-        int i;
-
-        /* stop urbs (to be sure) */
-        deactivate_urbs(subs, force, 1);
-        wait_clear_urbs(subs);
-
-        for (i = 0; i < MAX_URBS; i++)
-                release_urb_ctx(&subs->dataurb[i]);
-        for (i = 0; i < SYNC_URBS; i++)
-                release_urb_ctx(&subs->syncurb[i]);
-        usb_free_coherent(subs->dev, SYNC_URBS * 4,
-                        subs->syncbuf, subs->sync_dma);
-        subs->syncbuf = NULL;
-        subs->nurbs = 0;
-}
-
-/*
- * complete callback from data urb
- */
-static void snd_complete_urb(struct urb *urb)
-{
-        struct snd_urb_ctx *ctx = urb->context;
-        struct snd_usb_substream *subs = ctx->subs;
-        struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
-        int err = 0;
-
-        if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
-            !subs->running || /* can be stopped during retire callback */
-            (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
-            (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
-                clear_bit(ctx->index, &subs->active_mask);
-                if (err < 0) {
-                        snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
-                        snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-                }
-        }
-}
-
-
-/*
- * complete callback from sync urb
- */
-static void snd_complete_sync_urb(struct urb *urb)
-{
-        struct snd_urb_ctx *ctx = urb->context;
-        struct snd_usb_substream *subs = ctx->subs;
-        struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
-        int err = 0;
-
-        if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
-            !subs->running || /* can be stopped during retire callback */
-            (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
-            (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
-                clear_bit(ctx->index + 16, &subs->active_mask);
-                if (err < 0) {
-                        snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
-                        snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-                }
-        }
-}
-
-
-/*
- * initialize a substream for plaback/capture
- */
-int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
-                                unsigned int period_bytes,
-                                unsigned int rate,
-                                unsigned int frame_bits)
-{
-        unsigned int maxsize, i;
-        int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
-        unsigned int urb_packs, total_packs, packs_per_ms;
-        struct snd_usb_audio *chip = subs->stream->chip;
-
-        /* calculate the frequency in 16.16 format */
-        if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
-                subs->freqn = get_usb_full_speed_rate(rate);
-        else
-                subs->freqn = get_usb_high_speed_rate(rate);
-        subs->freqm = subs->freqn;
-        subs->freqshift = INT_MIN;
-        /* calculate max. frequency */
-        if (subs->maxpacksize) {
-                /* whatever fits into a max. size packet */
-                maxsize = subs->maxpacksize;
-                subs->freqmax = (maxsize / (frame_bits >> 3))
-                                << (16 - subs->datainterval);
-        } else {
-                /* no max. packet size: just take 25% higher than nominal */
-                subs->freqmax = subs->freqn + (subs->freqn >> 2);
-                maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
-                                >> (16 - subs->datainterval);
-        }
-        subs->phase = 0;
-
-        if (subs->fill_max)
-                subs->curpacksize = subs->maxpacksize;
-        else
-                subs->curpacksize = maxsize;
-
-        if (snd_usb_get_speed(subs->dev) != USB_SPEED_FULL)
-                packs_per_ms = 8 >> subs->datainterval;
-        else
-                packs_per_ms = 1;
-
-        if (is_playback) {
-                urb_packs = max(chip->nrpacks, 1);
-                urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
-        } else
-                urb_packs = 1;
-        urb_packs *= packs_per_ms;
-        if (subs->syncpipe)
-                urb_packs = min(urb_packs, 1U << subs->syncinterval);
-
-        /* decide how many packets to be used */
-        if (is_playback) {
-                unsigned int minsize, maxpacks;
-                /* determine how small a packet can be */
-                minsize = (subs->freqn >> (16 - subs->datainterval))
-                          * (frame_bits >> 3);
-                /* with sync from device, assume it can be 12% lower */
-                if (subs->syncpipe)
-                        minsize -= minsize >> 3;
-                minsize = max(minsize, 1u);
-                total_packs = (period_bytes + minsize - 1) / minsize;
-                /* we need at least two URBs for queueing */
-                if (total_packs < 2) {
-                        total_packs = 2;
-                } else {
-                        /* and we don't want too long a queue either */
-                        maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2);
-                        total_packs = min(total_packs, maxpacks);
-                }
-        } else {
-                while (urb_packs > 1 && urb_packs * maxsize >= period_bytes)
-                        urb_packs >>= 1;
-                total_packs = MAX_URBS * urb_packs;
-        }
-        subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
-        if (subs->nurbs > MAX_URBS) {
-                /* too much... */
-                subs->nurbs = MAX_URBS;
-                total_packs = MAX_URBS * urb_packs;
-        } else if (subs->nurbs < 2) {
-                /* too little - we need at least two packets
-                 * to ensure contiguous playback/capture
-                 */
-                subs->nurbs = 2;
-        }
-
-        /* allocate and initialize data urbs */
-        for (i = 0; i < subs->nurbs; i++) {
-                struct snd_urb_ctx *u = &subs->dataurb[i];
-                u->index = i;
-                u->subs = subs;
-                u->packets = (i + 1) * total_packs / subs->nurbs
-                        - i * total_packs / subs->nurbs;
-                u->buffer_size = maxsize * u->packets;
-                if (subs->fmt_type == UAC_FORMAT_TYPE_II)
-                        u->packets++; /* for transfer delimiter */
-                u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
-                if (!u->urb)
-                        goto out_of_memory;
-                u->urb->transfer_buffer =
-                        usb_alloc_coherent(subs->dev, u->buffer_size,
-                                           GFP_KERNEL, &u->urb->transfer_dma);
-                if (!u->urb->transfer_buffer)
-                        goto out_of_memory;
-                u->urb->pipe = subs->datapipe;
-                u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
-                u->urb->interval = 1 << subs->datainterval;
-                u->urb->context = u;
-                u->urb->complete = snd_complete_urb;
-        }
-
-        if (subs->syncpipe) {
-                /* allocate and initialize sync urbs */
-                subs->syncbuf = usb_alloc_coherent(subs->dev, SYNC_URBS * 4,
-                                                 GFP_KERNEL, &subs->sync_dma);
-                if (!subs->syncbuf)
-                        goto out_of_memory;
-                for (i = 0; i < SYNC_URBS; i++) {
-                        struct snd_urb_ctx *u = &subs->syncurb[i];
-                        u->index = i;
-                        u->subs = subs;
-                        u->packets = 1;
-                        u->urb = usb_alloc_urb(1, GFP_KERNEL);
-                        if (!u->urb)
-                                goto out_of_memory;
-                        u->urb->transfer_buffer = subs->syncbuf + i * 4;
-                        u->urb->transfer_dma = subs->sync_dma + i * 4;
-                        u->urb->transfer_buffer_length = 4;
-                        u->urb->pipe = subs->syncpipe;
-                        u->urb->transfer_flags = URB_ISO_ASAP |
-                                                 URB_NO_TRANSFER_DMA_MAP;
-                        u->urb->number_of_packets = 1;
-                        u->urb->interval = 1 << subs->syncinterval;
-                        u->urb->context = u;
-                        u->urb->complete = snd_complete_sync_urb;
-                }
-        }
-        return 0;
-
-out_of_memory:
-        snd_usb_release_substream_urbs(subs, 0);
-        return -ENOMEM;
-}
-
-/*
- * prepare urb for full speed capture sync pipe
- *
- * fill the length and offset of each urb descriptor.
- * the fixed 10.14 frequency is passed through the pipe.
- */
-static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
-                                    struct snd_pcm_runtime *runtime,
-                                    struct urb *urb)
-{
-        unsigned char *cp = urb->transfer_buffer;
-        struct snd_urb_ctx *ctx = urb->context;
-
-        urb->dev = ctx->subs->dev; /* we need to set this at each time */
-        urb->iso_frame_desc[0].length = 3;
-        urb->iso_frame_desc[0].offset = 0;
-        cp[0] = subs->freqn >> 2;
-        cp[1] = subs->freqn >> 10;
-        cp[2] = subs->freqn >> 18;
-        return 0;
-}
-
-/*
- * prepare urb for high speed capture sync pipe
- *
- * fill the length and offset of each urb descriptor.
- * the fixed 12.13 frequency is passed as 16.16 through the pipe.
- */
-static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
-                                       struct snd_pcm_runtime *runtime,
-                                       struct urb *urb)
-{
-        unsigned char *cp = urb->transfer_buffer;
-        struct snd_urb_ctx *ctx = urb->context;
-
-        urb->dev = ctx->subs->dev; /* we need to set this at each time */
-        urb->iso_frame_desc[0].length = 4;
-        urb->iso_frame_desc[0].offset = 0;
-        cp[0] = subs->freqn;
-        cp[1] = subs->freqn >> 8;
-        cp[2] = subs->freqn >> 16;
-        cp[3] = subs->freqn >> 24;
-        return 0;
-}
-
-/*
- * process after capture sync complete
- * - nothing to do
- */
-static int retire_capture_sync_urb(struct snd_usb_substream *subs,
-                                   struct snd_pcm_runtime *runtime,
-                                   struct urb *urb)
-{
-        return 0;
-}
-
-/*
- * prepare urb for capture data pipe
- *
- * fill the offset and length of each descriptor.
- *
- * we use a temporary buffer to write the captured data.
- * since the length of written data is determined by host, we cannot
- * write onto the pcm buffer directly...  the data is thus copied
- * later at complete callback to the global buffer.
- */
-static int prepare_capture_urb(struct snd_usb_substream *subs,
-                               struct snd_pcm_runtime *runtime,
-                               struct urb *urb)
-{
-        int i, offs;
-        struct snd_urb_ctx *ctx = urb->context;
-
-        offs = 0;
-        urb->dev = ctx->subs->dev; /* we need to set this at each time */
-        for (i = 0; i < ctx->packets; i++) {
-                urb->iso_frame_desc[i].offset = offs;
-                urb->iso_frame_desc[i].length = subs->curpacksize;
-                offs += subs->curpacksize;
-        }
-        urb->transfer_buffer_length = offs;
-        urb->number_of_packets = ctx->packets;
-        return 0;
-}
-
-/*
- * process after capture complete
- *
- * copy the data from each desctiptor to the pcm buffer, and
- * update the current position.
- */
-static int retire_capture_urb(struct snd_usb_substream *subs,
-                              struct snd_pcm_runtime *runtime,
-                              struct urb *urb)
-{
-        unsigned long flags;
-        unsigned char *cp;
-        int i;
-        unsigned int stride, frames, bytes, oldptr;
-        int period_elapsed = 0;
-
-        stride = runtime->frame_bits >> 3;
-
-        for (i = 0; i < urb->number_of_packets; i++) {
-                cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
-                if (urb->iso_frame_desc[i].status) {
-                        snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
-                        // continue;
-                }
-                bytes = urb->iso_frame_desc[i].actual_length;
-                frames = bytes / stride;
-                if (!subs->txfr_quirk)
-                        bytes = frames * stride;
-                if (bytes % (runtime->sample_bits >> 3) != 0) {
-#ifdef CONFIG_SND_DEBUG_VERBOSE
-                        int oldbytes = bytes;
-#endif
-                        bytes = frames * stride;
-                        snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n",
-                                                        oldbytes, bytes);
-                }
-                /* update the current pointer */
-                spin_lock_irqsave(&subs->lock, flags);
-                oldptr = subs->hwptr_done;
-                subs->hwptr_done += bytes;
-                if (subs->hwptr_done >= runtime->buffer_size * stride)
-                        subs->hwptr_done -= runtime->buffer_size * stride;
-                frames = (bytes + (oldptr % stride)) / stride;
-                subs->transfer_done += frames;
-                if (subs->transfer_done >= runtime->period_size) {
-                        subs->transfer_done -= runtime->period_size;
-                        period_elapsed = 1;
-                }
-                spin_unlock_irqrestore(&subs->lock, flags);
-                /* copy a data chunk */
-                if (oldptr + bytes > runtime->buffer_size * stride) {
-                        unsigned int bytes1 =
-                                        runtime->buffer_size * stride - oldptr;
-                        memcpy(runtime->dma_area + oldptr, cp, bytes1);
-                        memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1);
-                } else {
-                        memcpy(runtime->dma_area + oldptr, cp, bytes);
-                }
-        }
-        if (period_elapsed)
-                snd_pcm_period_elapsed(subs->pcm_substream);
-        return 0;
-}
-
-/*
- * Process after capture complete when paused.  Nothing to do.
- */
-static int retire_paused_capture_urb(struct snd_usb_substream *subs,
-                                     struct snd_pcm_runtime *runtime,
-                                     struct urb *urb)
-{
-        return 0;
-}
-
-
-/*
- * prepare urb for playback sync pipe
- *
- * set up the offset and length to receive the current frequency.
- */
-static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
-                                     struct snd_pcm_runtime *runtime,
-                                     struct urb *urb)
-{
-        struct snd_urb_ctx *ctx = urb->context;
-
-        urb->dev = ctx->subs->dev; /* we need to set this at each time */
-        urb->iso_frame_desc[0].length = min(4u, ctx->subs->syncmaxsize);
-        urb->iso_frame_desc[0].offset = 0;
-        return 0;
-}
-
-/*
- * process after playback sync complete
- *
- * Full speed devices report feedback values in 10.14 format as samples per
- * frame, high speed devices in 16.16 format as samples per microframe.
- * Because the Audio Class 1 spec was written before USB 2.0, many high speed
- * devices use a wrong interpretation, some others use an entirely different
- * format.  Therefore, we cannot predict what format any particular device uses
- * and must detect it automatically.
- */
-static int retire_playback_sync_urb(struct snd_usb_substream *subs,
-                                    struct snd_pcm_runtime *runtime,
-                                    struct urb *urb)
-{
-        unsigned int f;
-        int shift;
-        unsigned long flags;
-
-        if (urb->iso_frame_desc[0].status != 0 ||
-            urb->iso_frame_desc[0].actual_length < 3)
-                return 0;
-
-        f = le32_to_cpup(urb->transfer_buffer);
-        if (urb->iso_frame_desc[0].actual_length == 3)
-                f &= 0x00ffffff;
-        else
-                f &= 0x0fffffff;
-        if (f == 0)
-                return 0;
-
-        if (unlikely(subs->freqshift == INT_MIN)) {
-                /*
-                 * The first time we see a feedback value, determine its format
-                 * by shifting it left or right until it matches the nominal
-                 * frequency value.  This assumes that the feedback does not
-                 * differ from the nominal value more than +50% or -25%.
-                 */
-                shift = 0;
-                while (f < subs->freqn - subs->freqn / 4) {
-                        f <<= 1;
-                        shift++;
-                }
-                while (f > subs->freqn + subs->freqn / 2) {
-                        f >>= 1;
-                        shift--;
-                }
-                subs->freqshift = shift;
-        }
-        else if (subs->freqshift >= 0)
-                f <<= subs->freqshift;
-        else
-                f >>= -subs->freqshift;
-
-        if (likely(f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax)) {
-                /*
-                 * If the frequency looks valid, set it.
-                 * This value is referred to in prepare_playback_urb().
-                 */
-                spin_lock_irqsave(&subs->lock, flags);
-                subs->freqm = f;
-                spin_unlock_irqrestore(&subs->lock, flags);
-        } else {
-                /*
-                 * Out of range; maybe the shift value is wrong.
-                 * Reset it so that we autodetect again the next time.
-                 */
-                subs->freqshift = INT_MIN;
-        }
-
-        return 0;
-}
-
-/* determine the number of frames in the next packet */
-static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
-{
-        if (subs->fill_max)
-                return subs->maxframesize;
-        else {
-                subs->phase = (subs->phase & 0xffff)
-                        + (subs->freqm << subs->datainterval);
-                return min(subs->phase >> 16, subs->maxframesize);
-        }
-}
-
-/*
- * Prepare urb for streaming before playback starts or when paused.
- *
- * We don't have any data, so we send silence.
- */
-static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
-                                       struct snd_pcm_runtime *runtime,
-                                       struct urb *urb)
-{
-        unsigned int i, offs, counts;
-        struct snd_urb_ctx *ctx = urb->context;
-        int stride = runtime->frame_bits >> 3;
-
-        offs = 0;
-        urb->dev = ctx->subs->dev;
-        for (i = 0; i < ctx->packets; ++i) {
-                counts = snd_usb_audio_next_packet_size(subs);
-                urb->iso_frame_desc[i].offset = offs * stride;
-                urb->iso_frame_desc[i].length = counts * stride;
-                offs += counts;
-        }
-        urb->number_of_packets = ctx->packets;
-        urb->transfer_buffer_length = offs * stride;
-        memset(urb->transfer_buffer,
-               runtime->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
-               offs * stride);
-        return 0;
-}
-
-/*
- * prepare urb for playback data pipe
- *
- * Since a URB can handle only a single linear buffer, we must use double
- * buffering when the data to be transferred overflows the buffer boundary.
- * To avoid inconsistencies when updating hwptr_done, we use double buffering
- * for all URBs.
- */
-static int prepare_playback_urb(struct snd_usb_substream *subs,
-                                struct snd_pcm_runtime *runtime,
-                                struct urb *urb)
-{
-        int i, stride;
-        unsigned int counts, frames, bytes;
-        unsigned long flags;
-        int period_elapsed = 0;
-        struct snd_urb_ctx *ctx = urb->context;
-
-        stride = runtime->frame_bits >> 3;
-
-        frames = 0;
-        urb->dev = ctx->subs->dev; /* we need to set this at each time */
-        urb->number_of_packets = 0;
-        spin_lock_irqsave(&subs->lock, flags);
-        for (i = 0; i < ctx->packets; i++) {
-                counts = snd_usb_audio_next_packet_size(subs);
-                /* set up descriptor */
-                urb->iso_frame_desc[i].offset = frames * stride;
-                urb->iso_frame_desc[i].length = counts * stride;
-                frames += counts;
-                urb->number_of_packets++;
-                subs->transfer_done += counts;
-                if (subs->transfer_done >= runtime->period_size) {
-                        subs->transfer_done -= runtime->period_size;
-                        period_elapsed = 1;
-                        if (subs->fmt_type == UAC_FORMAT_TYPE_II) {
-                                if (subs->transfer_done > 0) {
-                                        /* FIXME: fill-max mode is not
-                                         * supported yet */
-                                        frames -= subs->transfer_done;
-                                        counts -= subs->transfer_done;
-                                        urb->iso_frame_desc[i].length =
-                                                counts * stride;
-                                        subs->transfer_done = 0;
-                                }
-                                i++;
-                                if (i < ctx->packets) {
-                                        /* add a transfer delimiter */
-                                        urb->iso_frame_desc[i].offset =
-                                                frames * stride;
-                                        urb->iso_frame_desc[i].length = 0;
-                                        urb->number_of_packets++;
-                                }
-                                break;
-                        }
-                }
-                if (period_elapsed) /* finish at the period boundary */
-                        break;
-        }
-        bytes = frames * stride;
-        if (subs->hwptr_done + bytes > runtime->buffer_size * stride) {
-                /* err, the transferred area goes over buffer boundary. */
-                unsigned int bytes1 =
-                        runtime->buffer_size * stride - subs->hwptr_done;
-                memcpy(urb->transfer_buffer,
-                       runtime->dma_area + subs->hwptr_done, bytes1);
-                memcpy(urb->transfer_buffer + bytes1,
-                       runtime->dma_area, bytes - bytes1);
-        } else {
-                memcpy(urb->transfer_buffer,
-                       runtime->dma_area + subs->hwptr_done, bytes);
-        }
-        subs->hwptr_done += bytes;
-        if (subs->hwptr_done >= runtime->buffer_size * stride)
-                subs->hwptr_done -= runtime->buffer_size * stride;
-        runtime->delay += frames;
-        spin_unlock_irqrestore(&subs->lock, flags);
-        urb->transfer_buffer_length = bytes;
-        if (period_elapsed)
-                snd_pcm_period_elapsed(subs->pcm_substream);
-        return 0;
-}
-
-/*
- * process after playback data complete
- * - decrease the delay count again
- */
-static int retire_playback_urb(struct snd_usb_substream *subs,
-                               struct snd_pcm_runtime *runtime,
-                               struct urb *urb)
-{
-        unsigned long flags;
-        int stride = runtime->frame_bits >> 3;
-        int processed = urb->transfer_buffer_length / stride;
-
-        spin_lock_irqsave(&subs->lock, flags);
-        if (processed > runtime->delay)
-                runtime->delay = 0;
-        else
-                runtime->delay -= processed;
-        spin_unlock_irqrestore(&subs->lock, flags);
-        return 0;
-}
-
-static const char *usb_error_string(int err)
-{
-        switch (err) {
-        case -ENODEV:
-                return "no device";
-        case -ENOENT:
-                return "endpoint not enabled";
-        case -EPIPE:
-                return "endpoint stalled";
-        case -ENOSPC:
-                return "not enough bandwidth";
-        case -ESHUTDOWN:
-                return "device disabled";
-        case -EHOSTUNREACH:
-                return "device suspended";
-        case -EINVAL:
-        case -EAGAIN:
-        case -EFBIG:
-        case -EMSGSIZE:
-                return "internal error";
-        default:
-                return "unknown error";
-        }
-}
-
-/*
- * set up and start data/sync urbs
- */
-static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
-{
-        unsigned int i;
-        int err;
-
-        if (subs->stream->chip->shutdown)
-                return -EBADFD;
-
-        for (i = 0; i < subs->nurbs; i++) {
-                if (snd_BUG_ON(!subs->dataurb[i].urb))
-                        return -EINVAL;
-                if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
-                        snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
-                        goto __error;
-                }
-        }
-        if (subs->syncpipe) {
-                for (i = 0; i < SYNC_URBS; i++) {
-                        if (snd_BUG_ON(!subs->syncurb[i].urb))
-                                return -EINVAL;
-                        if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
-                                snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
-                                goto __error;
-                        }
-                }
-        }
-
-        subs->active_mask = 0;
-        subs->unlink_mask = 0;
-        subs->running = 1;
-        for (i = 0; i < subs->nurbs; i++) {
-                err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
-                if (err < 0) {
-                        snd_printk(KERN_ERR "cannot submit datapipe "
-                                   "for urb %d, error %d: %s\n",
-                                   i, err, usb_error_string(err));
-                        goto __error;
-                }
-                set_bit(i, &subs->active_mask);
-        }
-        if (subs->syncpipe) {
-                for (i = 0; i < SYNC_URBS; i++) {
-                        err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
-                        if (err < 0) {
-                                snd_printk(KERN_ERR "cannot submit syncpipe "
-                                           "for urb %d, error %d: %s\n",
-                                           i, err, usb_error_string(err));
-                                goto __error;
-                        }
-                        set_bit(i + 16, &subs->active_mask);
-                }
-        }
-        return 0;
-
- __error:
-        // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
-        deactivate_urbs(subs, 0, 0);
-        return -EPIPE;
-}
-
-
-/*
- */
-static struct snd_urb_ops audio_urb_ops[2] = {
-        {
-                .prepare =      prepare_nodata_playback_urb,
-                .retire =       retire_playback_urb,
-                .prepare_sync = prepare_playback_sync_urb,
-                .retire_sync =  retire_playback_sync_urb,
-        },
-        {
-                .prepare =      prepare_capture_urb,
-                .retire =       retire_capture_urb,
-                .prepare_sync = prepare_capture_sync_urb,
-                .retire_sync =  retire_capture_sync_urb,
-        },
-};
-
-/*
- * initialize the substream instance.
- */
-
-void snd_usb_init_substream(struct snd_usb_stream *as,
-                            int stream, struct audioformat *fp)
-{
-        struct snd_usb_substream *subs = &as->substream[stream];
-
-        INIT_LIST_HEAD(&subs->fmt_list);
-        spin_lock_init(&subs->lock);
-
-        subs->stream = as;
-        subs->direction = stream;
-        subs->dev = as->chip->dev;
-        subs->txfr_quirk = as->chip->txfr_quirk;
-        subs->ops = audio_urb_ops[stream];
-        if (snd_usb_get_speed(subs->dev) >= USB_SPEED_HIGH)
-                subs->ops.prepare_sync = prepare_capture_sync_urb_hs;
-
-        snd_usb_set_pcm_ops(as->pcm, stream);
-
-        list_add_tail(&fp->list, &subs->fmt_list);
-        subs->formats |= fp->formats;
-        subs->endpoint = fp->endpoint;
-        subs->num_formats++;
-        subs->fmt_type = fp->fmt_type;
-}
-
-int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-        struct snd_usb_substream *subs = substream->runtime->private_data;
-
-        switch (cmd) {
-        case SNDRV_PCM_TRIGGER_START:
-        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-                subs->ops.prepare = prepare_playback_urb;
-                return 0;
-        case SNDRV_PCM_TRIGGER_STOP:
-                return deactivate_urbs(subs, 0, 0);
-        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-                subs->ops.prepare = prepare_nodata_playback_urb;
-                return 0;
-        }
-
-        return -EINVAL;
-}
-
-int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-        struct snd_usb_substream *subs = substream->runtime->private_data;
-
-        switch (cmd) {
-        case SNDRV_PCM_TRIGGER_START:
-                subs->ops.retire = retire_capture_urb;
-                return start_urbs(subs, substream->runtime);
-        case SNDRV_PCM_TRIGGER_STOP:
-                return deactivate_urbs(subs, 0, 0);
-        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-                subs->ops.retire = retire_paused_capture_urb;
-                return 0;
-        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-                subs->ops.retire = retire_capture_urb;
-                return 0;
-        }
-
-        return -EINVAL;
-}
-
-int snd_usb_substream_prepare(struct snd_usb_substream *subs,
-                              struct snd_pcm_runtime *runtime)
-{
-        /* clear urbs (to be sure) */
-        deactivate_urbs(subs, 0, 1);
-        wait_clear_urbs(subs);
-
-        /* for playback, submit the URBs now; otherwise, the first hwptr_done
-         * updates for all URBs would happen at the same time when starting */
-        if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
-                subs->ops.prepare = prepare_nodata_playback_urb;
-                return start_urbs(subs, runtime);
-        }
-
-        return 0;
-}
-
diff --git a/sound/usb/urb.h b/sound/usb/urb.h
deleted file mode 100644
index 888da38079cf..000000000000
--- a/sound/usb/urb.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#ifndef __USBAUDIO_URB_H
-#define __USBAUDIO_URB_H
-
-void snd_usb_init_substream(struct snd_usb_stream *as,
-                            int stream,
-                            struct audioformat *fp);
-
-int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
-                                unsigned int period_bytes,
-                                unsigned int rate,
-                                unsigned int frame_bits);
-
-void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force);
-
-int snd_usb_substream_prepare(struct snd_usb_substream *subs,
-                              struct snd_pcm_runtime *runtime);
-
-int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd);
-int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd);
-
-#endif /* __USBAUDIO_URB_H */
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 1e79986b5777..3e2b03577936 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -80,6 +80,7 @@ enum quirk_type {
         QUIRK_MIDI_CME,
         QUIRK_MIDI_AKAI,
         QUIRK_MIDI_US122L,
+        QUIRK_MIDI_FTDI,
         QUIRK_AUDIO_STANDARD_INTERFACE,
         QUIRK_AUDIO_FIXED_ENDPOINT,
         QUIRK_AUDIO_EDIROL_UAXX,