.bNumEndpoints = 0,
.bInterfaceClass = USB_CLASS_AUDIO,
.bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
};
#define TOTAL_LENGTH ( \
UAC_DT_AC_HEADER_SIZE(2) + \
UAC_DT_INPUT_TERMINAL_SIZE + \
UAC_DT_OUTPUT_TERMINAL_SIZE + \
UAC_DT_INPUT_TERMINAL_SIZE + \
UAC_DT_OUTPUT_TERMINAL_SIZE \
)
/* B.3.2 Class-Specific AC Interface Descriptor */
struct uac1_ac_header_descriptor_2 ac_header_desc = {
.bLength = UAC_DT_AC_HEADER_SIZE(2),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubtype = UAC_HEADER,
.bcdADC = __constant_cpu_to_le16(0x0100),
.wTotalLength = __constant_cpu_to_le16(TOTAL_LENGTH),
.bInCollection = F_AUDIO_NUM_INTERFACES,
/*.baInterfaceNr = {
[0] = F_AUDIO_INTERFACE_MICROPHONE,
[1] = F_AUDIO_INTERFACE_SPEAKER,
}
*/
};
/*---------------------------------*/
struct uac_input_terminal_descriptor speaker_input_terminal_desc = {
};
/* B.3.1 Standard AC Interface Descriptor */
static const struct usb_interface_descriptor ac_interface_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = GMIDI_AC_INTERFACE,
.bNumEndpoints = 0,
.bInterfaceClass = USB_CLASS_AUDIO,
.bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
.iInterface = STRING_MIDI_GADGET,
};
/* B.3.2 Class-Specific AC Interface Descriptor */
static const struct uac1_ac_header_descriptor_1 ac_header_desc = {
.bLength = UAC_DT_AC_HEADER_SIZE(1),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubtype = USB_MS_HEADER,
.bcdADC = cpu_to_le16(0x0100),
.wTotalLength = cpu_to_le16(UAC_DT_AC_HEADER_SIZE(1)),
.bInCollection = 1,
.baInterfaceNr = {
[0] = GMIDI_MS_INTERFACE,
}
};
/* B.4.1 Standard MS Interface Descriptor */
static const struct usb_interface_descriptor ms_interface_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = GMIDI_MS_INTERFACE,
