diff --git a/modules/usbaudio/Android.mk b/modules/usbaudio/Android.mk
index ec8a8c0..446281d 100644
--- a/modules/usbaudio/Android.mk
+++ b/modules/usbaudio/Android.mk
@@ -22,8 +22,8 @@
 	audio_hw.c \
 	alsa_device_profile.c \
 	alsa_device_proxy.c \
-	logging.c \
-	format.c
+	audio_logging.c \
+	audio_format.c
 LOCAL_C_INCLUDES += \
 	external/tinyalsa/include \
 	$(call include-path-for, audio-utils)
diff --git a/modules/usbaudio/alsa_device_profile.c b/modules/usbaudio/alsa_device_profile.c
index 8e84471..6397b28 100644
--- a/modules/usbaudio/alsa_device_profile.c
+++ b/modules/usbaudio/alsa_device_profile.c
@@ -26,8 +26,8 @@
 #include <log/log.h>
 
 #include "alsa_device_profile.h"
-#include "format.h"
-#include "logging.h"
+#include "audio_format.h"
+#include "audio_logging.h"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
diff --git a/modules/usbaudio/alsa_device_proxy.c b/modules/usbaudio/alsa_device_proxy.c
index 081c05b..902a6d2 100644
--- a/modules/usbaudio/alsa_device_proxy.c
+++ b/modules/usbaudio/alsa_device_proxy.c
@@ -22,7 +22,7 @@
 
 #include "alsa_device_proxy.h"
 
-#include "logging.h"
+#include "audio_logging.h"
 
 #define DEFAULT_PERIOD_SIZE     1024
 #define DEFAULT_PERIOD_COUNT    2
diff --git a/modules/usbaudio/audio_format.c b/modules/usbaudio/audio_format.c
new file mode 100644
index 0000000..63b1ba8
--- /dev/null
+++ b/modules/usbaudio/audio_format.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "audio_format"
+/*#define LOG_NDEBUG 0*/
+
+#include "audio_format.h"
+
+#include <tinyalsa/asoundlib.h>
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
+/*
+ * Maps from bit position in pcm_mask to PCM_ format constants.
+ */
+int8_t const pcm_format_value_map[50] = {
+    PCM_FORMAT_S8,          /* 00 - SNDRV_PCM_FORMAT_S8 */
+    PCM_FORMAT_INVALID,     /* 01 - SNDRV_PCM_FORMAT_U8 */
+    PCM_FORMAT_S16_LE,      /* 02 - SNDRV_PCM_FORMAT_S16_LE */
+    PCM_FORMAT_INVALID,     /* 03 - SNDRV_PCM_FORMAT_S16_BE */
+    PCM_FORMAT_INVALID,     /* 04 - SNDRV_PCM_FORMAT_U16_LE */
+    PCM_FORMAT_INVALID,     /* 05 - SNDRV_PCM_FORMAT_U16_BE */
+    PCM_FORMAT_S24_3LE,     /* 06 - SNDRV_PCM_FORMAT_S24_LE */
+    PCM_FORMAT_INVALID,     /* 07 - SNDRV_PCM_FORMAT_S24_BE */
+    PCM_FORMAT_INVALID,     /* 08 - SNDRV_PCM_FORMAT_U24_LE */
+    PCM_FORMAT_INVALID,     /* 09 - SNDRV_PCM_FORMAT_U24_BE */
+    PCM_FORMAT_S32_LE,      /* 10 - SNDRV_PCM_FORMAT_S32_LE */
+    PCM_FORMAT_INVALID,     /* 11 - SNDRV_PCM_FORMAT_S32_BE */
+    PCM_FORMAT_INVALID,     /* 12 - SNDRV_PCM_FORMAT_U32_LE */
+    PCM_FORMAT_INVALID,     /* 13 - SNDRV_PCM_FORMAT_U32_BE */
+    PCM_FORMAT_INVALID,     /* 14 - SNDRV_PCM_FORMAT_FLOAT_LE */
+    PCM_FORMAT_INVALID,     /* 15 - SNDRV_PCM_FORMAT_FLOAT_BE */
+    PCM_FORMAT_INVALID,     /* 16 - SNDRV_PCM_FORMAT_FLOAT64_LE */
+    PCM_FORMAT_INVALID,     /* 17 - SNDRV_PCM_FORMAT_FLOAT64_BE */
+    PCM_FORMAT_INVALID,     /* 18 - SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE */
+    PCM_FORMAT_INVALID,     /* 19 - SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE */
+    PCM_FORMAT_INVALID,     /* 20 - SNDRV_PCM_FORMAT_MU_LAW */
+    PCM_FORMAT_INVALID,     /* 21 - SNDRV_PCM_FORMAT_A_LAW */
+    PCM_FORMAT_INVALID,     /* 22 - SNDRV_PCM_FORMAT_IMA_ADPCM */
+    PCM_FORMAT_INVALID,     /* 23 - SNDRV_PCM_FORMAT_MPEG */
+    PCM_FORMAT_INVALID,     /* 24 - SNDRV_PCM_FORMAT_GSM */
+    PCM_FORMAT_INVALID,     /* 25 -> 30 (not assigned) */
+    PCM_FORMAT_INVALID,
+    PCM_FORMAT_INVALID,
+    PCM_FORMAT_INVALID,
+    PCM_FORMAT_INVALID,
+    PCM_FORMAT_INVALID,
+    PCM_FORMAT_INVALID,     /* 31 - SNDRV_PCM_FORMAT_SPECIAL */
+    PCM_FORMAT_S24_3LE,     /* 32 - SNDRV_PCM_FORMAT_S24_3LE */ /* ??? */
+    PCM_FORMAT_INVALID,     /* 33 - SNDRV_PCM_FORMAT_S24_3BE */
+    PCM_FORMAT_INVALID,     /* 34 - SNDRV_PCM_FORMAT_U24_3LE */
+    PCM_FORMAT_INVALID,     /* 35 - SNDRV_PCM_FORMAT_U24_3BE */
+    PCM_FORMAT_INVALID,     /* 36 - SNDRV_PCM_FORMAT_S20_3LE */
+    PCM_FORMAT_INVALID,     /* 37 - SNDRV_PCM_FORMAT_S20_3BE */
+    PCM_FORMAT_INVALID,     /* 38 - SNDRV_PCM_FORMAT_U20_3LE */
+    PCM_FORMAT_INVALID,     /* 39 - SNDRV_PCM_FORMAT_U20_3BE */
+    PCM_FORMAT_INVALID,     /* 40 - SNDRV_PCM_FORMAT_S18_3LE */
+    PCM_FORMAT_INVALID,     /* 41 - SNDRV_PCM_FORMAT_S18_3BE */
+    PCM_FORMAT_INVALID,     /* 42 - SNDRV_PCM_FORMAT_U18_3LE */
+    PCM_FORMAT_INVALID,     /* 43 - SNDRV_PCM_FORMAT_U18_3BE */
+    PCM_FORMAT_INVALID,     /* 44 - SNDRV_PCM_FORMAT_G723_24 */
+    PCM_FORMAT_INVALID,     /* 45 - SNDRV_PCM_FORMAT_G723_24_1B */
+    PCM_FORMAT_INVALID,     /* 46 - SNDRV_PCM_FORMAT_G723_40 */
+    PCM_FORMAT_INVALID,     /* 47 - SNDRV_PCM_FORMAT_G723_40_1B */
+    PCM_FORMAT_INVALID,     /* 48 - SNDRV_PCM_FORMAT_DSD_U8 */
+    PCM_FORMAT_INVALID      /* 49 - SNDRV_PCM_FORMAT_DSD_U16_LE */
+};
+
+/*
+ * Scans the provided format mask and returns the first non-8 bit sample
+ * format supported by the devices.
+ */
+enum pcm_format get_pcm_format_for_mask(struct pcm_mask* mask)
+{
+    int num_slots = ARRAY_SIZE(mask->bits);
+    int bits_per_slot = sizeof(mask->bits[0]) * 8;
+
+    int table_size = ARRAY_SIZE(pcm_format_value_map);
+
+    int slot_index, bit_index, table_index;
+    table_index = 0;
+    int num_written = 0;
+    for (slot_index = 0; slot_index < num_slots && table_index < table_size; slot_index++) {
+        unsigned bit_mask = 1;
+        for (bit_index = 0; bit_index < bits_per_slot && table_index < table_size; bit_index++) {
+            /* skip any 8-bit formats */
+            if (table_index >= 2 && (mask->bits[slot_index] & bit_mask) != 0) {
+                /* just return the first one which will be at least 16-bit */
+                return (int)pcm_format_value_map[table_index];
+            }
+            bit_mask <<= 1;
+            table_index++;
+        }
+    }
+
+    return PCM_FORMAT_INVALID;
+}
diff --git a/modules/usbaudio/format.h b/modules/usbaudio/audio_format.h
similarity index 74%
rename from modules/usbaudio/format.h
rename to modules/usbaudio/audio_format.h
index e23935e..712ef67 100644
--- a/modules/usbaudio/format.h
+++ b/modules/usbaudio/audio_format.h
@@ -14,14 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_FORMAT_H
-#define ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_FORMAT_H
+#ifndef ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_AUDIO_FORMAT_H
+#define ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_AUDIO_FORMAT_H
 
 #include <system/audio.h>
 
 #include <tinyalsa/asoundlib.h>
 
-audio_format_t get_format_for_mask(struct pcm_mask* mask);
 enum pcm_format get_pcm_format_for_mask(struct pcm_mask* mask);
 
-#endif /* ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_FORMAT_H */
+#endif /* ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_AUDIO_FORMAT_H */
diff --git a/modules/usbaudio/audio_hw.c b/modules/usbaudio/audio_hw.c
index 0346408..d668787 100644
--- a/modules/usbaudio/audio_hw.c
+++ b/modules/usbaudio/audio_hw.c
@@ -51,7 +51,7 @@
 
 #include "alsa_device_profile.h"
 #include "alsa_device_proxy.h"
-#include "logging.h"
+#include "audio_logging.h"
 
 #define DEFAULT_INPUT_BUFFER_SIZE_MS 20
 
diff --git a/modules/usbaudio/logging.c b/modules/usbaudio/audio_logging.c
similarity index 98%
rename from modules/usbaudio/logging.c
rename to modules/usbaudio/audio_logging.c
index 0a05511..77fbd51 100644
--- a/modules/usbaudio/logging.c
+++ b/modules/usbaudio/audio_logging.c
@@ -14,14 +14,14 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "usb_logging"
+#define LOG_TAG "audio_logging"
 /*#define LOG_NDEBUG 0*/
 
 #include <string.h>
 
 #include <log/log.h>
 
-#include "logging.h"
+#include "audio_logging.h"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
diff --git a/modules/usbaudio/logging.h b/modules/usbaudio/audio_logging.h
similarity index 79%
rename from modules/usbaudio/logging.h
rename to modules/usbaudio/audio_logging.h
index b5640ed..082e8b2 100644
--- a/modules/usbaudio/logging.h
+++ b/modules/usbaudio/audio_logging.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_LOGGING_H
-#define ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_LOGGING_H
+#ifndef ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_AUDIO_LOGGING_H
+#define ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_AUDIO_LOGGING_H
 
 #include <tinyalsa/asoundlib.h>
 
@@ -23,4 +23,4 @@
 void log_pcm_params(struct pcm_params * alsa_hw_params);
 void log_pcm_config(struct pcm_config * config, const char* label);
 
-#endif /* ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_LOGGING_H */
+#endif /* ANDROID_HARDWARE_LIBHARDWARE_MODULES_USBAUDIO_AUDIO_LOGGING_H */
diff --git a/modules/usbaudio/format.c b/modules/usbaudio/format.c
deleted file mode 100644
index 6aac1d3..0000000
--- a/modules/usbaudio/format.c
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "usb_profile"
-/*#define LOG_NDEBUG 0*/
-
-#include "format.h"
-
-#include <tinyalsa/asoundlib.h>
-
-#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
-
-/*
- * Maps from bit position in pcm_mask to AUDIO_ format constants.
- */
-static audio_format_t const format_value_map[] = {
-    AUDIO_FORMAT_PCM_8_BIT,           /* 00 - SNDRV_PCM_FORMAT_S8 */
-    AUDIO_FORMAT_PCM_8_BIT,           /* 01 - SNDRV_PCM_FORMAT_U8 */
-    AUDIO_FORMAT_PCM_16_BIT,          /* 02 - SNDRV_PCM_FORMAT_S16_LE */
-    AUDIO_FORMAT_INVALID,             /* 03 - SNDRV_PCM_FORMAT_S16_BE */
-    AUDIO_FORMAT_INVALID,             /* 04 - SNDRV_PCM_FORMAT_U16_LE */
-    AUDIO_FORMAT_INVALID,             /* 05 - SNDRV_PCM_FORMAT_U16_BE */
-    AUDIO_FORMAT_INVALID,             /* 06 - SNDRV_PCM_FORMAT_S24_LE */
-    AUDIO_FORMAT_INVALID,             /* 07 - SNDRV_PCM_FORMAT_S24_BE */
-    AUDIO_FORMAT_INVALID,             /* 08 - SNDRV_PCM_FORMAT_U24_LE */
-    AUDIO_FORMAT_INVALID,             /* 09 - SNDRV_PCM_FORMAT_U24_BE */
-    AUDIO_FORMAT_PCM_32_BIT,          /* 10 - SNDRV_PCM_FORMAT_S32_LE */
-    AUDIO_FORMAT_INVALID,             /* 11 - SNDRV_PCM_FORMAT_S32_BE */
-    AUDIO_FORMAT_INVALID,             /* 12 - SNDRV_PCM_FORMAT_U32_LE */
-    AUDIO_FORMAT_INVALID,             /* 13 - SNDRV_PCM_FORMAT_U32_BE */
-    AUDIO_FORMAT_PCM_FLOAT,           /* 14 - SNDRV_PCM_FORMAT_FLOAT_LE */
-    AUDIO_FORMAT_INVALID,             /* 15 - SNDRV_PCM_FORMAT_FLOAT_BE */
-    AUDIO_FORMAT_INVALID,             /* 16 - SNDRV_PCM_FORMAT_FLOAT64_LE */
-    AUDIO_FORMAT_INVALID,             /* 17 - SNDRV_PCM_FORMAT_FLOAT64_BE */
-    AUDIO_FORMAT_INVALID,             /* 18 - SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE */
-    AUDIO_FORMAT_INVALID,             /* 19 - SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE */
-    AUDIO_FORMAT_INVALID,             /* 20 - SNDRV_PCM_FORMAT_MU_LAW */
-    AUDIO_FORMAT_INVALID,             /* 21 - SNDRV_PCM_FORMAT_A_LAW */
-    AUDIO_FORMAT_INVALID,             /* 22 - SNDRV_PCM_FORMAT_IMA_ADPCM */
-    AUDIO_FORMAT_INVALID,             /* 23 - SNDRV_PCM_FORMAT_MPEG */
-    AUDIO_FORMAT_INVALID,             /* 24 - SNDRV_PCM_FORMAT_GSM */
-    AUDIO_FORMAT_INVALID,             /* 25 -> 30 (not assigned) */
-    AUDIO_FORMAT_INVALID,
-    AUDIO_FORMAT_INVALID,
-    AUDIO_FORMAT_INVALID,
-    AUDIO_FORMAT_INVALID,
-    AUDIO_FORMAT_INVALID,
-    AUDIO_FORMAT_INVALID,             /* 31 - SNDRV_PCM_FORMAT_SPECIAL */
-    AUDIO_FORMAT_PCM_24_BIT_PACKED,   /* 32 - SNDRV_PCM_FORMAT_S24_3LE */
-    AUDIO_FORMAT_INVALID,             /* 33 - SNDRV_PCM_FORMAT_S24_3BE */
-    AUDIO_FORMAT_INVALID,             /* 34 - SNDRV_PCM_FORMAT_U24_3LE */
-    AUDIO_FORMAT_INVALID,             /* 35 - SNDRV_PCM_FORMAT_U24_3BE */
-    AUDIO_FORMAT_INVALID,             /* 36 - SNDRV_PCM_FORMAT_S20_3LE */
-    AUDIO_FORMAT_INVALID,             /* 37 - SNDRV_PCM_FORMAT_S20_3BE */
-    AUDIO_FORMAT_INVALID,             /* 38 - SNDRV_PCM_FORMAT_U20_3LE */
-    AUDIO_FORMAT_INVALID,             /* 39 - SNDRV_PCM_FORMAT_U20_3BE */
-    AUDIO_FORMAT_INVALID,             /* 40 - SNDRV_PCM_FORMAT_S18_3LE */
-    AUDIO_FORMAT_INVALID,             /* 41 - SNDRV_PCM_FORMAT_S18_3BE */
-    AUDIO_FORMAT_INVALID,             /* 42 - SNDRV_PCM_FORMAT_U18_3LE */
-    AUDIO_FORMAT_INVALID,             /* 43 - SNDRV_PCM_FORMAT_U18_3BE */
-    AUDIO_FORMAT_INVALID,             /* 44 - SNDRV_PCM_FORMAT_G723_24 */
-    AUDIO_FORMAT_INVALID,             /* 45 - SNDRV_PCM_FORMAT_G723_24_1B */
-    AUDIO_FORMAT_INVALID,             /* 46 - SNDRV_PCM_FORMAT_G723_40 */
-    AUDIO_FORMAT_INVALID,             /* 47 - SNDRV_PCM_FORMAT_G723_40_1B */
-    AUDIO_FORMAT_INVALID,             /* 48 - SNDRV_PCM_FORMAT_DSD_U8 */
-    AUDIO_FORMAT_INVALID              /* 49 - SNDRV_PCM_FORMAT_DSD_U16_LE */
-};
-
-audio_format_t get_format_for_mask(struct pcm_mask* mask)
-{
-    int num_slots = sizeof(mask->bits) / sizeof(mask->bits[0]);
-    int bits_per_slot = sizeof(mask->bits[0]) * 8;
-
-    int table_size = sizeof(format_value_map) / sizeof(format_value_map[0]);
-
-    int slot_index, bit_index, table_index;
-    table_index = 0;
-    int num_written = 0;
-    for (slot_index = 0; slot_index < num_slots; slot_index++) {
-        unsigned bit_mask = 1;
-        for (bit_index = 0; bit_index < bits_per_slot; bit_index++) {
-            /* don't return b-bit formats even if they are supported */
-            if (table_index >= 2 && (mask->bits[slot_index] & bit_mask) != 0) {
-                /* just return the first one */
-                return table_index < table_size
-                           ? format_value_map[table_index]
-                           : AUDIO_FORMAT_INVALID;
-            }
-            bit_mask <<= 1;
-            table_index++;
-        }
-    }
-
-    return AUDIO_FORMAT_INVALID;
-}
-
-/*
- * Maps from bit position in pcm_mask to PCM_ format constants.
- */
-int8_t const pcm_format_value_map[50] = {
-    PCM_FORMAT_S8,          /* 00 - SNDRV_PCM_FORMAT_S8 */
-    PCM_FORMAT_INVALID,     /* 01 - SNDRV_PCM_FORMAT_U8 */
-    PCM_FORMAT_S16_LE,      /* 02 - SNDRV_PCM_FORMAT_S16_LE */
-    PCM_FORMAT_INVALID,     /* 03 - SNDRV_PCM_FORMAT_S16_BE */
-    PCM_FORMAT_INVALID,     /* 04 - SNDRV_PCM_FORMAT_U16_LE */
-    PCM_FORMAT_INVALID,     /* 05 - SNDRV_PCM_FORMAT_U16_BE */
-    PCM_FORMAT_S24_3LE,     /* 06 - SNDRV_PCM_FORMAT_S24_LE */
-    PCM_FORMAT_INVALID,     /* 07 - SNDRV_PCM_FORMAT_S24_BE */
-    PCM_FORMAT_INVALID,     /* 08 - SNDRV_PCM_FORMAT_U24_LE */
-    PCM_FORMAT_INVALID,     /* 09 - SNDRV_PCM_FORMAT_U24_BE */
-    PCM_FORMAT_S32_LE,      /* 10 - SNDRV_PCM_FORMAT_S32_LE */
-    PCM_FORMAT_INVALID,     /* 11 - SNDRV_PCM_FORMAT_S32_BE */
-    PCM_FORMAT_INVALID,     /* 12 - SNDRV_PCM_FORMAT_U32_LE */
-    PCM_FORMAT_INVALID,     /* 13 - SNDRV_PCM_FORMAT_U32_BE */
-    PCM_FORMAT_INVALID,     /* 14 - SNDRV_PCM_FORMAT_FLOAT_LE */
-    PCM_FORMAT_INVALID,     /* 15 - SNDRV_PCM_FORMAT_FLOAT_BE */
-    PCM_FORMAT_INVALID,     /* 16 - SNDRV_PCM_FORMAT_FLOAT64_LE */
-    PCM_FORMAT_INVALID,     /* 17 - SNDRV_PCM_FORMAT_FLOAT64_BE */
-    PCM_FORMAT_INVALID,     /* 18 - SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE */
-    PCM_FORMAT_INVALID,     /* 19 - SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE */
-    PCM_FORMAT_INVALID,     /* 20 - SNDRV_PCM_FORMAT_MU_LAW */
-    PCM_FORMAT_INVALID,     /* 21 - SNDRV_PCM_FORMAT_A_LAW */
-    PCM_FORMAT_INVALID,     /* 22 - SNDRV_PCM_FORMAT_IMA_ADPCM */
-    PCM_FORMAT_INVALID,     /* 23 - SNDRV_PCM_FORMAT_MPEG */
-    PCM_FORMAT_INVALID,     /* 24 - SNDRV_PCM_FORMAT_GSM */
-    PCM_FORMAT_INVALID,     /* 25 -> 30 (not assigned) */
-    PCM_FORMAT_INVALID,
-    PCM_FORMAT_INVALID,
-    PCM_FORMAT_INVALID,
-    PCM_FORMAT_INVALID,
-    PCM_FORMAT_INVALID,
-    PCM_FORMAT_INVALID,     /* 31 - SNDRV_PCM_FORMAT_SPECIAL */
-    PCM_FORMAT_S24_3LE,     /* 32 - SNDRV_PCM_FORMAT_S24_3LE */ /* ??? */
-    PCM_FORMAT_INVALID,     /* 33 - SNDRV_PCM_FORMAT_S24_3BE */
-    PCM_FORMAT_INVALID,     /* 34 - SNDRV_PCM_FORMAT_U24_3LE */
-    PCM_FORMAT_INVALID,     /* 35 - SNDRV_PCM_FORMAT_U24_3BE */
-    PCM_FORMAT_INVALID,     /* 36 - SNDRV_PCM_FORMAT_S20_3LE */
-    PCM_FORMAT_INVALID,     /* 37 - SNDRV_PCM_FORMAT_S20_3BE */
-    PCM_FORMAT_INVALID,     /* 38 - SNDRV_PCM_FORMAT_U20_3LE */
-    PCM_FORMAT_INVALID,     /* 39 - SNDRV_PCM_FORMAT_U20_3BE */
-    PCM_FORMAT_INVALID,     /* 40 - SNDRV_PCM_FORMAT_S18_3LE */
-    PCM_FORMAT_INVALID,     /* 41 - SNDRV_PCM_FORMAT_S18_3BE */
-    PCM_FORMAT_INVALID,     /* 42 - SNDRV_PCM_FORMAT_U18_3LE */
-    PCM_FORMAT_INVALID,     /* 43 - SNDRV_PCM_FORMAT_U18_3BE */
-    PCM_FORMAT_INVALID,     /* 44 - SNDRV_PCM_FORMAT_G723_24 */
-    PCM_FORMAT_INVALID,     /* 45 - SNDRV_PCM_FORMAT_G723_24_1B */
-    PCM_FORMAT_INVALID,     /* 46 - SNDRV_PCM_FORMAT_G723_40 */
-    PCM_FORMAT_INVALID,     /* 47 - SNDRV_PCM_FORMAT_G723_40_1B */
-    PCM_FORMAT_INVALID,     /* 48 - SNDRV_PCM_FORMAT_DSD_U8 */
-    PCM_FORMAT_INVALID      /* 49 - SNDRV_PCM_FORMAT_DSD_U16_LE */
-};
-
-/*
- * Scans the provided format mask and returns the first non-8 bit sample
- * format supported by the devices.
- */
-enum pcm_format get_pcm_format_for_mask(struct pcm_mask* mask)
-{
-    int num_slots = ARRAY_SIZE(mask->bits);
-    int bits_per_slot = sizeof(mask->bits[0]) * 8;
-
-    int table_size = ARRAY_SIZE(pcm_format_value_map);
-
-    int slot_index, bit_index, table_index;
-    table_index = 0;
-    int num_written = 0;
-    for (slot_index = 0; slot_index < num_slots && table_index < table_size; slot_index++) {
-        unsigned bit_mask = 1;
-        for (bit_index = 0; bit_index < bits_per_slot && table_index < table_size; bit_index++) {
-            /* skip any 8-bit formats */
-            if (table_index >= 2 && (mask->bits[slot_index] & bit_mask) != 0) {
-                /* just return the first one which will be at least 16-bit */
-                return (int)pcm_format_value_map[table_index];
-            }
-            bit_mask <<= 1;
-            table_index++;
-        }
-    }
-
-    return PCM_FORMAT_INVALID;
-}