6 files changed, 333 insertions, 46 deletions

diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h
new file mode 100644
index 000000000000..3b8560d233bd
--- /dev/null
+++ b/include/linux/usb/audio-v2.h
@@ -0,0 +1,319 @@
+/*
+ * Copyright (c) 2010 Daniel Mack <daniel@caiaq.de>
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * License ("GPL") version 2, as published by the Free Software Foundation.
+ *
+ * This file holds USB constants and structures defined
+ * by the USB Device Class Definition for Audio Devices in version 2.0.
+ * Comments below reference relevant sections of the documents contained
+ * in http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip
+ */
+
+#ifndef __LINUX_USB_AUDIO_V2_H
+#define __LINUX_USB_AUDIO_V2_H
+
+#include <linux/types.h>
+
+/* v1.0 and v2.0 of this standard have many things in common. For the rest
+ * of the definitions, please refer to audio.h */
+
+/* 4.7.2.1 Clock Source Descriptor */
+
+struct uac_clock_source_descriptor {
+        __u8 bLength;
+        __u8 bDescriptorType;
+        __u8 bDescriptorSubtype;
+        __u8 bClockID;
+        __u8 bmAttributes;
+        __u8 bmControls;
+        __u8 bAssocTerminal;
+        __u8 iClockSource;
+} __attribute__((packed));
+
+/* 4.7.2.2 Clock Source Descriptor */
+
+struct uac_clock_selector_descriptor {
+        __u8 bLength;
+        __u8 bDescriptorType;
+        __u8 bDescriptorSubtype;
+        __u8 bClockID;
+        __u8 bNrInPins;
+        __u8 bmControls;
+        __u8 baCSourceID[];
+} __attribute__((packed));
+
+/* 4.9.2 Class-Specific AS Interface Descriptor */
+
+struct uac_as_header_descriptor_v2 {
+        __u8 bLength;
+        __u8 bDescriptorType;
+        __u8 bDescriptorSubtype;
+        __u8 bTerminalLink;
+        __u8 bmControls;
+        __u8 bFormatType;
+        __u32 bmFormats;
+        __u8 bNrChannels;
+        __u32 bmChannelConfig;
+        __u8 iChannelNames;
+} __attribute__((packed));
+
+
+/* A.7 Audio Function Category Codes */
+#define UAC2_FUNCTION_SUBCLASS_UNDEFINED        0x00
+#define UAC2_FUNCTION_DESKTOP_SPEAKER           0x01
+#define UAC2_FUNCTION_HOME_THEATER              0x02
+#define UAC2_FUNCTION_MICROPHONE                0x03
+#define UAC2_FUNCTION_HEADSET                   0x04
+#define UAC2_FUNCTION_TELEPHONE                 0x05
+#define UAC2_FUNCTION_CONVERTER                 0x06
+#define UAC2_FUNCTION_SOUND_RECORDER            0x07
+#define UAC2_FUNCTION_IO_BOX                    0x08
+#define UAC2_FUNCTION_MUSICAL_INSTRUMENT        0x09
+#define UAC2_FUNCTION_PRO_AUDIO                 0x0a
+#define UAC2_FUNCTION_AUDIO_VIDEO               0x0b
+#define UAC2_FUNCTION_CONTROL_PANEL             0x0c
+#define UAC2_FUNCTION_OTHER                     0xff
+
+/* A.9 Audio Class-Specific AC Interface Descriptor Subtypes */
+/* see audio.h for the rest, which is identical to v1 */
+#define UAC2_EFFECT_UNIT                        0x07
+#define UAC2_PROCESSING_UNIT_V2         0x08
+#define UAC2_EXTENSION_UNIT_V2          0x09
+#define UAC2_CLOCK_SOURCE               0x0a
+#define UAC2_CLOCK_SELECTOR             0x0b
+#define UAC2_CLOCK_MULTIPLIER           0x0c
+#define UAC2_SAMPLE_RATE_CONVERTER      0x0d
+
+/* A.10 Audio Class-Specific AS Interface Descriptor Subtypes */
+/* see audio.h for the rest, which is identical to v1 */
+#define UAC2_ENCODER                    0x03
+#define UAC2_DECODER                    0x04
+
+/* A.11 Effect Unit Effect Types */
+#define UAC2_EFFECT_UNDEFINED           0x00
+#define UAC2_EFFECT_PARAM_EQ            0x01
+#define UAC2_EFFECT_REVERB              0x02
+#define UAC2_EFFECT_MOD_DELAY           0x03
+#define UAC2_EFFECT_DYN_RANGE_COMP      0x04
+
+/* A.12 Processing Unit Process Types */
+#define UAC2_PROCESS_UNDEFINED          0x00
+#define UAC2_PROCESS_UP_DOWNMIX         0x01
+#define UAC2_PROCESS_DOLBY_PROLOCIC     0x02
+#define UAC2_PROCESS_STEREO_EXTENDER    0x03
+
+/* A.14 Audio Class-Specific Request Codes */
+#define UAC2_CS_CUR                     0x01
+#define UAC2_CS_RANGE                   0x02
+
+/* A.15 Encoder Type Codes */
+#define UAC2_ENCODER_UNDEFINED          0x00
+#define UAC2_ENCODER_OTHER              0x01
+#define UAC2_ENCODER_MPEG               0x02
+#define UAC2_ENCODER_AC3                0x03
+#define UAC2_ENCODER_WMA                0x04
+#define UAC2_ENCODER_DTS                0x05
+
+/* A.16 Decoder Type Codes */
+#define UAC2_DECODER_UNDEFINED          0x00
+#define UAC2_DECODER_OTHER              0x01
+#define UAC2_DECODER_MPEG               0x02
+#define UAC2_DECODER_AC3                0x03
+#define UAC2_DECODER_WMA                0x04
+#define UAC2_DECODER_DTS                0x05
+
+/* A.17.1 Clock Source Control Selectors */
+#define UAC2_CS_UNDEFINED               0x00
+#define UAC2_CS_CONTROL_SAM_FREQ        0x01
+#define UAC2_CS_CONTROL_CLOCK_VALID     0x02
+
+/* A.17.2 Clock Selector Control Selectors */
+#define UAC2_CX_UNDEFINED               0x00
+#define UAC2_CX_CLOCK_SELECTOR          0x01
+
+/* A.17.3 Clock Multiplier Control Selectors */
+#define UAC2_CM_UNDEFINED               0x00
+#define UAC2_CM_NUMERATOR               0x01
+#define UAC2_CM_DENOMINTATOR            0x02
+
+/* A.17.4 Terminal Control Selectors */
+#define UAC2_TE_UNDEFINED               0x00
+#define UAC2_TE_COPY_PROTECT            0x01
+#define UAC2_TE_CONNECTOR               0x02
+#define UAC2_TE_OVERLOAD                0x03
+#define UAC2_TE_CLUSTER                 0x04
+#define UAC2_TE_UNDERFLOW               0x05
+#define UAC2_TE_OVERFLOW                0x06
+#define UAC2_TE_LATENCY                 0x07
+
+/* A.17.5 Mixer Control Selectors */
+#define UAC2_MU_UNDEFINED               0x00
+#define UAC2_MU_MIXER                   0x01
+#define UAC2_MU_CLUSTER                 0x02
+#define UAC2_MU_UNDERFLOW               0x03
+#define UAC2_MU_OVERFLOW                0x04
+#define UAC2_MU_LATENCY                 0x05
+
+/* A.17.6 Selector Control Selectors */
+#define UAC2_SU_UNDEFINED               0x00
+#define UAC2_SU_SELECTOR                0x01
+#define UAC2_SU_LATENCY                 0x02
+
+/* A.17.7 Feature Unit Control Selectors */
+/* see audio.h for the rest, which is identical to v1 */
+#define UAC2_FU_INPUT_GAIN              0x0b
+#define UAC2_FU_INPUT_GAIN_PAD          0x0c
+#define UAC2_FU_PHASE_INVERTER          0x0d
+#define UAC2_FU_UNDERFLOW               0x0e
+#define UAC2_FU_OVERFLOW                0x0f
+#define UAC2_FU_LATENCY                 0x10
+
+/* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
+#define UAC2_PE_UNDEFINED               0x00
+#define UAC2_PE_ENABLE                  0x01
+#define UAC2_PE_CENTERFREQ              0x02
+#define UAC2_PE_QFACTOR                 0x03
+#define UAC2_PE_GAIN                    0x04
+#define UAC2_PE_UNDERFLOW               0x05
+#define UAC2_PE_OVERFLOW                0x06
+#define UAC2_PE_LATENCY                 0x07
+
+/* A.17.8.2 Reverberation Effect Unit Control Selectors */
+#define UAC2_RV_UNDEFINED               0x00
+#define UAC2_RV_ENABLE                  0x01
+#define UAC2_RV_TYPE                    0x02
+#define UAC2_RV_LEVEL                   0x03
+#define UAC2_RV_TIME                    0x04
+#define UAC2_RV_FEEDBACK                0x05
+#define UAC2_RV_PREDELAY                0x06
+#define UAC2_RV_DENSITY                 0x07
+#define UAC2_RV_HIFREQ_ROLLOFF          0x08
+#define UAC2_RV_UNDERFLOW               0x09
+#define UAC2_RV_OVERFLOW                0x0a
+#define UAC2_RV_LATENCY                 0x0b
+
+/* A.17.8.3 Modulation Delay Effect Control Selectors */
+#define UAC2_MD_UNDEFINED               0x00
+#define UAC2_MD_ENABLE                  0x01
+#define UAC2_MD_BALANCE                 0x02
+#define UAC2_MD_RATE                    0x03
+#define UAC2_MD_DEPTH                   0x04
+#define UAC2_MD_TIME                    0x05
+#define UAC2_MD_FEEDBACK                0x06
+#define UAC2_MD_UNDERFLOW               0x07
+#define UAC2_MD_OVERFLOW                0x08
+#define UAC2_MD_LATENCY                 0x09
+
+/* A.17.8.4 Dynamic Range Compressor Effect Unit Control Selectors */
+#define UAC2_DR_UNDEFINED               0x00
+#define UAC2_DR_ENABLE                  0x01
+#define UAC2_DR_COMPRESSION_RATE        0x02
+#define UAC2_DR_MAXAMPL                 0x03
+#define UAC2_DR_THRESHOLD               0x04
+#define UAC2_DR_ATTACK_TIME             0x05
+#define UAC2_DR_RELEASE_TIME            0x06
+#define UAC2_DR_UNDEFLOW                0x07
+#define UAC2_DR_OVERFLOW                0x08
+#define UAC2_DR_LATENCY                 0x09
+
+/* A.17.9.1 Up/Down-mix Processing Unit Control Selectors */
+#define UAC2_UD_UNDEFINED               0x00
+#define UAC2_UD_ENABLE                  0x01
+#define UAC2_UD_MODE_SELECT             0x02
+#define UAC2_UD_CLUSTER                 0x03
+#define UAC2_UD_UNDERFLOW               0x04
+#define UAC2_UD_OVERFLOW                0x05
+#define UAC2_UD_LATENCY                 0x06
+
+/* A.17.9.2 Dolby Prologic[tm] Processing Unit Control Selectors */
+#define UAC2_DP_UNDEFINED               0x00
+#define UAC2_DP_ENABLE                  0x01
+#define UAC2_DP_MODE_SELECT             0x02
+#define UAC2_DP_CLUSTER                 0x03
+#define UAC2_DP_UNDERFFLOW              0x04
+#define UAC2_DP_OVERFLOW                0x05
+#define UAC2_DP_LATENCY                 0x06
+
+/* A.17.9.3 Stereo Expander Processing Unit Control Selectors */
+#define UAC2_ST_EXT_UNDEFINED           0x00
+#define UAC2_ST_EXT_ENABLE              0x01
+#define UAC2_ST_EXT_WIDTH               0x02
+#define UAC2_ST_EXT_UNDEFLOW            0x03
+#define UAC2_ST_EXT_OVERFLOW            0x04
+#define UAC2_ST_EXT_LATENCY             0x05
+
+/* A.17.10 Extension Unit Control Selectors */
+#define UAC2_XU_UNDEFINED               0x00
+#define UAC2_XU_ENABLE                  0x01
+#define UAC2_XU_CLUSTER                 0x02
+#define UAC2_XU_UNDERFLOW               0x03
+#define UAC2_XU_OVERFLOW                0x04
+#define UAC2_XU_LATENCY                 0x05
+
+/* A.17.11 AudioStreaming Interface Control Selectors */
+#define UAC2_AS_UNDEFINED               0x00
+#define UAC2_AS_ACT_ALT_SETTING         0x01
+#define UAC2_AS_VAL_ALT_SETTINGS        0x02
+#define UAC2_AS_AUDIO_DATA_FORMAT       0x03
+
+/* A.17.12 Encoder Control Selectors */
+#define UAC2_EN_UNDEFINED               0x00
+#define UAC2_EN_BIT_RATE                0x01
+#define UAC2_EN_QUALITY                 0x02
+#define UAC2_EN_VBR                     0x03
+#define UAC2_EN_TYPE                    0x04
+#define UAC2_EN_UNDERFLOW               0x05
+#define UAC2_EN_OVERFLOW                0x06
+#define UAC2_EN_ENCODER_ERROR           0x07
+#define UAC2_EN_PARAM1                  0x08
+#define UAC2_EN_PARAM2                  0x09
+#define UAC2_EN_PARAM3                  0x0a
+#define UAC2_EN_PARAM4                  0x0b
+#define UAC2_EN_PARAM5                  0x0c
+#define UAC2_EN_PARAM6                  0x0d
+#define UAC2_EN_PARAM7                  0x0e
+#define UAC2_EN_PARAM8                  0x0f
+
+/* A.17.13.1 MPEG Decoder Control Selectors */
+#define UAC2_MPEG_UNDEFINED             0x00
+#define UAC2_MPEG_DUAL_CHANNEL          0x01
+#define UAC2_MPEG_SECOND_STEREO         0x02
+#define UAC2_MPEG_MULTILINGUAL          0x03
+#define UAC2_MPEG_DYN_RANGE             0x04
+#define UAC2_MPEG_SCALING               0x05
+#define UAC2_MPEG_HILO_SCALING          0x06
+#define UAC2_MPEG_UNDERFLOW             0x07
+#define UAC2_MPEG_OVERFLOW              0x08
+#define UAC2_MPEG_DECODER_ERROR         0x09
+
+/* A17.13.2 AC3 Decoder Control Selectors */
+#define UAC2_AC3_UNDEFINED              0x00
+#define UAC2_AC3_MODE                   0x01
+#define UAC2_AC3_DYN_RANGE              0x02
+#define UAC2_AC3_SCALING                0x03
+#define UAC2_AC3_HILO_SCALING           0x04
+#define UAC2_AC3_UNDERFLOW              0x05
+#define UAC2_AC3_OVERFLOW               0x06
+#define UAC2_AC3_DECODER_ERROR          0x07
+
+/* A17.13.3 WMA Decoder Control Selectors */
+#define UAC2_WMA_UNDEFINED              0x00
+#define UAC2_WMA_UNDERFLOW              0x01
+#define UAC2_WMA_OVERFLOW               0x02
+#define UAC2_WMA_DECODER_ERROR          0x03
+
+/* A17.13.4 DTS Decoder Control Selectors */
+#define UAC2_DTS_UNDEFINED              0x00
+#define UAC2_DTS_UNDERFLOW              0x01
+#define UAC2_DTS_OVERFLOW               0x02
+#define UAC2_DTS_DECODER_ERROR          0x03
+
+/* A17.14 Endpoint Control Selectors */
+#define UAC2_EP_CS_UNDEFINED            0x00
+#define UAC2_EP_CS_PITCH                0x01
+#define UAC2_EP_CS_DATA_OVERRUN         0x02
+#define UAC2_EP_CS_DATA_UNDERRUN        0x03
+
+#endif /* __LINUX_USB_AUDIO_V2_H */
+
diff --git a/include/linux/usb/audio.h b/include/linux/usb/audio.h
index 4d3e450e2b03..cdad728543ae 100644
--- a/include/linux/usb/audio.h
+++ b/include/linux/usb/audio.h
@@ -13,6 +13,9 @@
  * Comments below reference relevant sections of that document:
  *
  * http://www.usb.org/developers/devclass_docs/audio10.pdf
+ *
+ * Types and defines in this file are either specific to version 1.0 of
+ * this standard or common for newer versions.
  */
 
 #ifndef __LINUX_USB_AUDIO_H
@@ -20,14 +23,15 @@
 
 #include <linux/types.h>
 
+/* bInterfaceProtocol values to denote the version of the standard used */
+#define UAC_VERSION_1                   0x00
+#define UAC_VERSION_2                   0x20
+
 /* A.2 Audio Interface Subclass Codes */
 #define USB_SUBCLASS_AUDIOCONTROL       0x01
 #define USB_SUBCLASS_AUDIOSTREAMING     0x02
 #define USB_SUBCLASS_MIDISTREAMING      0x03
 
-#define UAC_VERSION_1                   0x00
-#define UAC_VERSION_2                   0x20
-
 /* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
 #define UAC_HEADER                      0x01
 #define UAC_INPUT_TERMINAL              0x02
@@ -38,15 +42,6 @@
 #define UAC_PROCESSING_UNIT_V1          0x07
 #define UAC_EXTENSION_UNIT_V1           0x08
 
-/* UAC v2.0 types */
-#define UAC_EFFECT_UNIT                 0x07
-#define UAC_PROCESSING_UNIT_V2          0x08
-#define UAC_EXTENSION_UNIT_V2           0x09
-#define UAC_CLOCK_SOURCE                0x0a
-#define UAC_CLOCK_SELECTOR              0x0b
-#define UAC_CLOCK_MULTIPLIER            0x0c
-#define UAC_SAMPLE_RATE_CONVERTER       0x0d
-
 /* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
 #define UAC_AS_GENERAL                  0x01
 #define UAC_FORMAT_TYPE                 0x02
@@ -78,10 +73,6 @@
 
 #define UAC_GET_STAT                    0xff
 
-/* Audio class v2.0 handles all the parameter calls differently */
-#define UAC2_CS_CUR                     0x01
-#define UAC2_CS_RANGE                   0x02
-
 /* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
 #define UAC_MS_HEADER                   0x01
 #define UAC_MIDI_IN_JACK                0x02
@@ -200,19 +191,6 @@ struct uac_as_header_descriptor_v1 {
         __le16 wFormatTag;              /* The Audio Data Format */
 } __attribute__ ((packed));
 
-struct uac_as_header_descriptor_v2 {
-        __u8 bLength;
-        __u8 bDescriptorType;
-        __u8 bDescriptorSubtype;
-        __u8 bTerminalLink;
-        __u8 bmControls;
-        __u8 bFormatType;
-        __u32 bmFormats;
-        __u8 bNrChannels;
-        __u32 bmChannelConfig;
-        __u8 iChannelNames;
-} __attribute__((packed));
-
 #define UAC_DT_AS_HEADER_SIZE           7
 
 /* Formats - A.1.1 Audio Data Format Type I Codes */
@@ -277,7 +255,6 @@ struct uac_format_type_i_ext_descriptor {
         __u8 bSideBandProtocol;
 } __attribute__((packed));
 
-
 /* Formats - Audio Data Format Type I Codes */
 
 #define UAC_FORMAT_TYPE_II_MPEG 0x1001
@@ -336,19 +313,6 @@ struct uac_iso_endpoint_descriptor {
 #define UAC_EP_CS_ATTR_PITCH_CONTROL    0x02
 #define UAC_EP_CS_ATTR_FILL_MAX         0x80
 
-/* Audio class v2.0: CLOCK_SOURCE descriptor */
-
-struct uac_clock_source_descriptor {
-        __u8 bLength;
-        __u8 bDescriptorType;
-        __u8 bDescriptorSubtype;
-        __u8 bClockID;
-        __u8 bmAttributes;
-        __u8 bmControls;
-        __u8 bAssocTerminal;
-        __u8 iClockSource;
-} __attribute__((packed));
-
 /* A.10.2 Feature Unit Control Selectors */
 
 struct uac_feature_unit_descriptor {
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 426aabc729d9..78d12ff00e8a 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -45,6 +45,7 @@
 #include <linux/moduleparam.h>
 #include <linux/mutex.h>
 #include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
 
 #include <sound/core.h>
 #include <sound/info.h>
@@ -250,7 +251,7 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
                  * clock selectors and sample rate conversion units. */
 
                 cs = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen,
-                                                NULL, UAC_CLOCK_SOURCE);
+                                                NULL, UAC2_CLOCK_SOURCE);
 
                 if (!cs) {
                         snd_printk(KERN_ERR "CLOCK_SOURCE descriptor not found\n");
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 91850f84cad6..b1309cdc1ac0 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
diff --git a/sound/usb/format.c b/sound/usb/format.c
index b613e0aaeb63..0e04efe9551e 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index e0f3f87f99a0..630e2203b344 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/usb.h>
 #include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -215,7 +216,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
         data[3] = rate >> 24;
         if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
                                    USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
-                                   0x0100, chip->clock_id << 8,
+                                   UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
                                    data, sizeof(data), 1000)) < 0) {
                 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
                            dev->devnum, iface, fmt->altsetting, rate);
@@ -223,7 +224,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
         }
         if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
                                    USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
-                                   0x0100, chip->clock_id << 8,
+                                   UAC2_CS_CONTROL_SAM_FREQ << 8, chip->clock_id << 8,
                                    data, sizeof(data), 1000)) < 0) {
                 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
                            dev->devnum, iface, fmt->altsetting);