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-rw-r--r--include/linux/usb/audio-v3.h72
-rw-r--r--include/uapi/linux/usb/audio.h1
-rw-r--r--sound/usb/card.c39
-rw-r--r--sound/usb/clock.c4
-rw-r--r--sound/usb/format.c49
-rw-r--r--sound/usb/stream.c87
6 files changed, 222 insertions, 30 deletions
diff --git a/include/linux/usb/audio-v3.h b/include/linux/usb/audio-v3.h
new file mode 100644
index 000000000000..04adabf5648d
--- /dev/null
+++ b/include/linux/usb/audio-v3.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * This file holds USB constants and structures defined
+ * by the USB Device Class Definition for Audio Devices in version 3.0.
+ * Comments below reference relevant sections of the documents contained
+ * in http://www.usb.org/developers/docs/devclass_docs/USB_Audio_v3.0.zip
+ */
+
+#ifndef __LINUX_USB_AUDIO_V3_H
+#define __LINUX_USB_AUDIO_V3_H
+
+#include <linux/types.h>
+
+#define BADD_MAXPSIZE_SYNC_MONO_16 0x0060
+#define BADD_MAXPSIZE_SYNC_MONO_24 0x0090
+#define BADD_MAXPSIZE_SYNC_STEREO_16 0x00c0
+#define BADD_MAXPSIZE_SYNC_STEREO_24 0x0120
+
+#define BADD_MAXPSIZE_ASYNC_MONO_16 0x0062
+#define BADD_MAXPSIZE_ASYNC_MONO_24 0x0093
+#define BADD_MAXPSIZE_ASYNC_STEREO_16 0x00c4
+#define BADD_MAXPSIZE_ASYNC_STEREO_24 0x0126
+
+#define BIT_RES_16_BIT 0x10
+#define BIT_RES_24_BIT 0x18
+
+#define SUBSLOTSIZE_16_BIT 0x02
+#define SUBSLOTSIZE_24_BIT 0x03
+
+#define BADD_SAMPLING_RATE 48000
+
+#define NUM_CHANNELS_MONO 1
+#define NUM_CHANNELS_STEREO 2
+#define BADD_CH_CONFIG_MONO 0
+#define BADD_CH_CONFIG_STEREO 3
+
+#define FULL_ADC_PROFILE 0x01
+
+/* BADD Profile IDs */
+#define PROF_GENERIC_IO 0x20
+#define PROF_HEADPHONE 0x21
+#define PROF_SPEAKER 0x22
+#define PROF_MICROPHONE 0x23
+#define PROF_HEADSET 0x24
+#define PROF_HEADSET_ADAPTER 0x25
+#define PROF_SPEAKERPHONE 0x26
+
+/* BADD Entity IDs */
+#define BADD_OUT_TERM_ID_BAOF 0x03
+#define BADD_OUT_TERM_ID_BAIF 0x06
+#define BADD_IN_TERM_ID_BAOF 0x01
+#define BADD_IN_TERM_ID_BAIF 0x04
+#define BADD_FU_ID_BAOF 0x02
+#define BADD_FU_ID_BAIF 0x05
+#define BADD_CLOCK_SOURCE 0x09
+#define BADD_FU_ID_BAIOF 0x07
+#define BADD_MU_ID_BAIOF 0x08
+
+#define UAC_BIDIR_TERMINAL_HEADSET 0x0402
+#define UAC_BIDIR_TERMINAL_SPEAKERPHONE 0x0403
+
+#endif /* __LINUX_USB_AUDIO_V3_H */
diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
index d2314be4f0c0..c6f5b096c594 100644
--- a/include/uapi/linux/usb/audio.h
+++ b/include/uapi/linux/usb/audio.h
@@ -26,6 +26,7 @@
/* bInterfaceProtocol values to denote the version of the standard used */
#define UAC_VERSION_1 0x00
#define UAC_VERSION_2 0x20
+#define UAC_VERSION_3 0x30
/* A.2 Audio Interface Subclass Codes */
#define USB_SUBCLASS_AUDIOCONTROL 0x01
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 7bc935bab369..23ea575f3bcf 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -45,6 +45,7 @@
#include <linux/usb/audio.h>
#include <linux/usb/audio-v2.h>
#include <linux/module.h>
+#include <linux/usb/audio-v3.h>
#include <sound/control.h>
#include <sound/core.h>
@@ -281,7 +282,6 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
struct usb_host_interface *host_iface;
struct usb_interface_descriptor *altsd;
struct usb_interface *usb_iface;
- void *control_header;
int i, protocol;
usb_iface = usb_ifnum_to_if(dev, ctrlif);
@@ -298,16 +298,13 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
return -EINVAL;
}
- control_header = snd_usb_find_csint_desc(host_iface->extra,
- host_iface->extralen,
- NULL, UAC_HEADER);
altsd = get_iface_desc(host_iface);
protocol = altsd->bInterfaceProtocol;
- if (!control_header) {
- dev_err(&dev->dev, "cannot find UAC_HEADER\n");
- return -EINVAL;
- }
+ /*
+ * UAC 1.0 devices use AC HEADER Desc for linking AS interfaces;
+ * UAC 2.0 and 3.0 devices use IAD for linking AS interfaces
+ */
switch (protocol) {
default:
@@ -317,8 +314,17 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
/* fall through */
case UAC_VERSION_1: {
- struct uac1_ac_header_descriptor *h1 = control_header;
+ void *control_header;
+ struct uac1_ac_header_descriptor *h1;
+
+ control_header = snd_usb_find_csint_desc(host_iface->extra,
+ host_iface->extralen, NULL, UAC_HEADER);
+ if (!control_header) {
+ dev_err(&dev->dev, "cannot find UAC_HEADER\n");
+ return -EINVAL;
+ }
+ h1 = control_header;
if (!h1->bInCollection) {
dev_info(&dev->dev, "skipping empty audio interface (v1)\n");
return -EINVAL;
@@ -335,7 +341,8 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
break;
}
- case UAC_VERSION_2: {
+ case UAC_VERSION_2:
+ case UAC_VERSION_3: {
struct usb_interface_assoc_descriptor *assoc =
usb_iface->intf_assoc;
if (!assoc) {
@@ -354,7 +361,8 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
}
if (!assoc) {
- dev_err(&dev->dev, "Audio class v2 interfaces need an interface association\n");
+ dev_err(&dev->dev, "Audio class V%d interfaces need an interface association\n",
+ protocol);
return -EINVAL;
}
@@ -554,6 +562,15 @@ static int usb_audio_probe(struct usb_interface *intf,
struct usb_host_interface *alts;
int ifnum;
u32 id;
+ struct usb_interface_assoc_descriptor *assoc;
+
+ assoc = intf->intf_assoc;
+ if (assoc && assoc->bFunctionClass == USB_CLASS_AUDIO &&
+ assoc->bFunctionProtocol == UAC_VERSION_3 &&
+ assoc->bFunctionSubClass == FULL_ADC_PROFILE) {
+ dev_info(&dev->dev, "No support for full-fledged ADC 3.0 yet!!\n");
+ return -EINVAL;
+ }
alts = &intf->altsetting[0];
ifnum = get_iface_desc(alts)->bInterfaceNumber;
diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 7ccbcaf6a147..2cd09ceba5e9 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -424,6 +424,10 @@ int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
case UAC_VERSION_2:
return set_sample_rate_v2(chip, iface, alts, fmt, rate);
+
+ /* Clock rate is fixed at 48 kHz for BADD devices */
+ case UAC_VERSION_3:
+ return 0;
}
}
diff --git a/sound/usb/format.c b/sound/usb/format.c
index 789d19ec035d..2cc3b92f1fba 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -20,6 +20,7 @@
#include <linux/usb.h>
#include <linux/usb/audio.h>
#include <linux/usb/audio-v2.h>
+#include <linux/usb/audio-v3.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -69,6 +70,30 @@ static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
format <<= 1;
break;
}
+
+ case UAC_VERSION_3: {
+ switch (fp->maxpacksize) {
+ case BADD_MAXPSIZE_SYNC_MONO_16:
+ case BADD_MAXPSIZE_SYNC_STEREO_16:
+ case BADD_MAXPSIZE_ASYNC_MONO_16:
+ case BADD_MAXPSIZE_ASYNC_STEREO_16: {
+ sample_width = BIT_RES_16_BIT;
+ sample_bytes = SUBSLOTSIZE_16_BIT;
+ break;
+ }
+
+ case BADD_MAXPSIZE_SYNC_MONO_24:
+ case BADD_MAXPSIZE_SYNC_STEREO_24:
+ case BADD_MAXPSIZE_ASYNC_MONO_24:
+ case BADD_MAXPSIZE_ASYNC_STEREO_24: {
+ sample_width = BIT_RES_24_BIT;
+ sample_bytes = SUBSLOTSIZE_24_BIT;
+ break;
+ }
+ }
+ format = 1 << format;
+ break;
+ }
}
if ((pcm_formats == 0) &&
@@ -366,6 +391,22 @@ err:
return ret;
}
+static int badd_set_audio_rate_v3(struct snd_usb_audio *chip,
+ struct audioformat *fp)
+{
+ unsigned int rate;
+
+ fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL);
+ if (fp->rate_table == NULL)
+ return -ENOMEM;
+
+ fp->nr_rates = 1;
+ rate = BADD_SAMPLING_RATE;
+ fp->rate_min = fp->rate_max = fp->rate_table[0] = rate;
+ fp->rates |= snd_pcm_rate_to_rate_bit(rate);
+ return 0;
+}
+
/*
* parse the format type I and III descriptors
*/
@@ -415,6 +456,9 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
/* fp->channels is already set in this case */
ret = parse_audio_format_rates_v2(chip, fp);
break;
+ case UAC_VERSION_3:
+ ret = badd_set_audio_rate_v3(chip, fp);
+ break;
}
if (fp->channels < 1) {
@@ -502,7 +546,10 @@ int snd_usb_parse_audio_format(struct snd_usb_audio *chip,
fmt->bFormatType);
return -ENOTSUPP;
}
- fp->fmt_type = fmt->bFormatType;
+ if (fp->protocol == UAC_VERSION_3)
+ fp->fmt_type = UAC_FORMAT_TYPE_I;
+ else
+ fp->fmt_type = fmt->bFormatType;
if (err < 0)
return err;
#if 1
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index 98b2c28ae46b..2bb503576134 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -20,6 +20,7 @@
#include <linux/usb.h>
#include <linux/usb/audio.h>
#include <linux/usb/audio-v2.h>
+#include <linux/usb/audio-v3.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -284,8 +285,6 @@ static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits,
0 /* terminator */
};
struct snd_pcm_chmap_elem *chmap;
- const unsigned int *maps;
- int c;
if (channels > ARRAY_SIZE(chmap->map))
return NULL;
@@ -294,27 +293,42 @@ static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits,
if (!chmap)
return NULL;
- maps = protocol == UAC_VERSION_2 ? uac2_maps : uac1_maps;
chmap->channels = channels;
- c = 0;
- if (bits) {
- for (; bits && *maps; maps++, bits >>= 1)
- if (bits & 1)
- chmap->map[c++] = *maps;
+ if (protocol == UAC_VERSION_3) {
+ switch (channels) {
+ case 1:
+ chmap->map[0] = SNDRV_CHMAP_MONO;
+ break;
+ case 2:
+ chmap->map[0] = SNDRV_CHMAP_FL;
+ chmap->map[1] = SNDRV_CHMAP_FR;
+ break;
+ }
} else {
- /* If we're missing wChannelConfig, then guess something
- to make sure the channel map is not skipped entirely */
- if (channels == 1)
- chmap->map[c++] = SNDRV_CHMAP_MONO;
- else
- for (; c < channels && *maps; maps++)
- chmap->map[c++] = *maps;
+ int c = 0;
+ const unsigned int *maps =
+ protocol == UAC_VERSION_2 ? uac2_maps : uac1_maps;
+
+ if (bits) {
+ for (; bits && *maps; maps++, bits >>= 1)
+ if (bits & 1)
+ chmap->map[c++] = *maps;
+ } else {
+ /*
+ * If we're missing wChannelConfig, then guess something
+ * to make sure the channel map is not skipped entirely
+ */
+ if (channels == 1)
+ chmap->map[c++] = SNDRV_CHMAP_MONO;
+ else
+ for (; c < channels && *maps; maps++)
+ chmap->map[c++] = *maps;
+ }
+ for (; c < channels; c++)
+ chmap->map[c] = SNDRV_CHMAP_UNKNOWN;
}
- for (; c < channels; c++)
- chmap->map[c] = SNDRV_CHMAP_UNKNOWN;
-
return chmap;
}
@@ -411,6 +425,9 @@ static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip,
struct usb_interface_descriptor *altsd = get_iface_desc(alts);
int attributes = 0;
+ if (protocol == UAC_VERSION_3)
+ return 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 */
@@ -631,6 +648,39 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
iface_no, altno, as->bTerminalLink);
continue;
}
+
+ case UAC_VERSION_3: {
+ int wMaxPacketSize;
+
+ format = UAC_FORMAT_TYPE_I_PCM;
+ clock = BADD_CLOCK_SOURCE;
+ wMaxPacketSize = le16_to_cpu(get_endpoint(alts, 0)
+ ->wMaxPacketSize);
+ switch (wMaxPacketSize) {
+ case BADD_MAXPSIZE_SYNC_MONO_16:
+ case BADD_MAXPSIZE_SYNC_MONO_24:
+ case BADD_MAXPSIZE_ASYNC_MONO_16:
+ case BADD_MAXPSIZE_ASYNC_MONO_24: {
+ num_channels = NUM_CHANNELS_MONO;
+ chconfig = BADD_CH_CONFIG_MONO;
+ goto populate_fp;
+ }
+
+ case BADD_MAXPSIZE_SYNC_STEREO_16:
+ case BADD_MAXPSIZE_SYNC_STEREO_24:
+ case BADD_MAXPSIZE_ASYNC_STEREO_16:
+ case BADD_MAXPSIZE_ASYNC_STEREO_24: {
+ num_channels = NUM_CHANNELS_STEREO;
+ chconfig = BADD_CH_CONFIG_STEREO;
+ goto populate_fp;
+ }
+ default:
+ dev_err(&dev->dev,
+ "%u:%d: invalid wMaxPacketSize\n",
+ iface_no, altno);
+ continue;
+ }
+ }
}
/* get format type */
@@ -664,6 +714,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
fp->maxpacksize * 2)
continue;
+populate_fp:
fp = kzalloc(sizeof(*fp), GFP_KERNEL);
if (! fp) {
dev_err(&dev->dev, "cannot malloc\n");
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-26 10:02:15 +0000