@@ -244,4 +244,12 @@ config SND_SOC_INTEL_AVS_MACH_TDF8532
Say Y or m if you have such a device. This is a recommended option.
If unsure select "N".
+config SND_SOC_INTEL_AVS_MACH_USB
+ tristate "USB-Audio board"
+ depends on USB_XHCI_PCI || COMPILE_TEST
+ select SND_SOC_USB_CODEC
+ help
+ This allows Intel AVS driver to pair with xHCI Audio Sideband.
+ If unsure select "N".
+
endmenu
@@ -24,6 +24,7 @@ snd-soc-avs-rt5663-y := rt5663.o
snd-soc-avs-rt5682-y := rt5682.o
snd-soc-avs-ssm4567-y := ssm4567.o
snd-soc-avs-tdf8532-y := tdf8532.o
+snd-soc-avs-usb-y := usb.o
obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_DA7219) += snd-soc-avs-da7219.o
obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_DMIC) += snd-soc-avs-dmic.o
@@ -49,3 +50,4 @@ obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_RT5663) += snd-soc-avs-rt5663.o
obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_RT5682) += snd-soc-avs-rt5682.o
obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_SSM4567) += snd-soc-avs-ssm4567.o
obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_TDF8532) += snd-soc-avs-tdf8532.o
+obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_USB) += snd-soc-avs-usb.o
new file mode 100644
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright(c) 2025 Intel Corporation
+//
+// Author: Cezary Rojewski <cezary.rojewski@intel.com>
+//
+
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+#include <sound/soc.h>
+#include <sound/soc-card.h>
+#include <sound/usb.h>
+
+static int uao_create_dai_links(struct device *dev, struct snd_usb_audio *chip,
+ struct snd_soc_dai_link **links, int *num_links)
+{
+ struct snd_soc_dai_link *dl;
+ int i;
+
+ dl = devm_kcalloc(dev, chip->pcm_devs, sizeof(*dl), GFP_KERNEL);
+ if (!dl)
+ return -ENOMEM;
+
+ for (i = 0; i < chip->pcm_devs; i++) {
+ dl[i].name = devm_kasprintf(dev, GFP_KERNEL, "uao-be-link%d", i);
+ if (!dl[i].name)
+ return -ENOMEM;
+ dl[i].stream_name = dl[i].name;
+
+ dl[i].no_pcm = 1;
+ dl[i].num_cpus = 1;
+ dl[i].num_codecs = 1;
+ dl[i].nonatomic = 1;
+ dl[i].codecs = devm_kzalloc(dev, sizeof(*dl[i].codecs), GFP_KERNEL);
+ dl[i].cpus = devm_kzalloc(dev, sizeof(*dl[i].cpus), GFP_KERNEL);
+ if (!dl[i].codecs || !dl[i].cpus)
+ return -ENOMEM;
+ dl[i].codecs->name = "usb-codec";
+ dl[i].codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "usb-codec-dai%d", i);
+ if (!dl[i].codecs->dai_name)
+ return -ENOMEM;
+ dl[i].cpus->dai_name = "uaol-cpu0";
+ }
+
+ *links = dl;
+ *num_links = chip->pcm_devs;
+ return 0;
+}
+
+static int uao_board_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct snd_usb_audio *chip;
+ struct snd_soc_card *card;
+ struct usb_device *udev;
+ char shortname[32];
+ char longname[80];
+ int ret;
+
+ chip = dev_get_drvdata(dev->parent);
+ udev = chip->dev;
+
+ switch (udev->speed) {
+ case USB_SPEED_FULL:
+ case USB_SPEED_HIGH:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ ret = uao_create_dai_links(dev, chip, &card->dai_link, &card->num_links);
+ if (ret)
+ return ret;
+
+ card->dev = dev;
+ card->owner = THIS_MODULE;
+ card->fully_routed = true;
+ card->driver_name = "USB-Audio";
+
+ snd_usb_make_card_names(chip, shortname, longname);
+ /* card->driver/shortname/longname set by ASoC. */
+ /* card->private_data/free redundant for ASoC-based. */
+ card->name = devm_kstrdup(dev, shortname, GFP_KERNEL);
+ card->long_name = devm_kstrdup(dev, longname, GFP_KERNEL);
+ card->components = devm_kasprintf(dev, GFP_KERNEL, "USB%04x:%04x",
+ usb_device_vid(udev), usb_device_pid(udev));
+ if (!card->name || !card->long_name || !card->components)
+ return -ENOMEM;
+
+ return devm_snd_soc_register_card(dev, card);
+}
+
+static const struct platform_device_id uao_board_driver_ids[] = {
+ { .name = "uao_board", },
+ { },
+};
+
+static struct platform_driver uao_board_driver = {
+ .probe = uao_board_probe,
+ .driver = {
+ .name = "uao_board",
+ .pm = &snd_soc_pm_ops,
+ },
+ .id_table = uao_board_driver_ids,
+};
+
+module_platform_driver(uao_board_driver);
+
+MODULE_DESCRIPTION("USB Audio Offload machine driver");
+MODULE_LICENSE("GPL");
Provide machine board driver that represents USB Audio sound card. The card connects ASoC USB codec driver with Intel AudioDSP avs-driver driver so that user can enjoy streaming over USB device without engaging their CPU - transfer is offloaded onto DSP instead. Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> --- sound/soc/intel/avs/boards/Kconfig | 8 ++ sound/soc/intel/avs/boards/Makefile | 2 + sound/soc/intel/avs/boards/usb.c | 115 ++++++++++++++++++++++++++++ 3 files changed, 125 insertions(+) create mode 100644 sound/soc/intel/avs/boards/usb.c