diff options
Diffstat (limited to 'include/linux/usb/audio-v2.h')
| -rw-r--r-- | include/linux/usb/audio-v2.h | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h index 2389f93..383b94b 100644 --- a/include/linux/usb/audio-v2.h +++ b/include/linux/usb/audio-v2.h @@ -18,6 +18,16 @@ /* v1.0 and v2.0 of this standard have many things in common. For the rest * of the definitions, please refer to audio.h */ +static inline bool uac2_control_is_readable(u32 bmControls, u8 control) +{ + return (bmControls >> (control * 2)) & 0x1; +} + +static inline bool uac2_control_is_writeable(u32 bmControls, u8 control) +{ + return (bmControls >> (control * 2)) & 0x2; +} + /* 4.7.2.1 Clock Source Descriptor */ struct uac_clock_source_descriptor { @@ -31,6 +41,13 @@ struct uac_clock_source_descriptor { __u8 iClockSource; } __attribute__((packed)); +/* bmAttribute fields */ +#define UAC_CLOCK_SOURCE_TYPE_EXT 0x0 +#define UAC_CLOCK_SOURCE_TYPE_INT_FIXED 0x1 +#define UAC_CLOCK_SOURCE_TYPE_INT_VAR 0x2 +#define UAC_CLOCK_SOURCE_TYPE_INT_PROG 0x3 +#define UAC_CLOCK_SOURCE_SYNCED_TO_SOF (1 << 2) + /* 4.7.2.2 Clock Source Descriptor */ struct uac_clock_selector_descriptor { @@ -39,8 +56,20 @@ struct uac_clock_selector_descriptor { __u8 bDescriptorSubtype; __u8 bClockID; __u8 bNrInPins; - __u8 bmControls; __u8 baCSourceID[]; + /* bmControls, bAssocTerminal and iClockSource omitted */ +} __attribute__((packed)); + +/* 4.7.2.3 Clock Multiplier Descriptor */ + +struct uac_clock_multiplier_descriptor { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubtype; + __u8 bClockID; + __u8 bCSourceID; + __u8 bmControls; + __u8 iClockMultiplier; } __attribute__((packed)); /* 4.7.2.4 Input terminal descriptor */ @@ -105,6 +134,22 @@ struct uac_as_header_descriptor_v2 { __u8 iChannelNames; } __attribute__((packed)); +/* 4.10.1.2 Class-Specific AS Isochronous Audio Data Endpoint Descriptor */ + +struct uac2_iso_endpoint_descriptor { + __u8 bLength; /* in bytes: 8 */ + __u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */ + __u8 bDescriptorSubtype; /* EP_GENERAL */ + __u8 bmAttributes; + __u8 bmControls; + __u8 bLockDelayUnits; + __le16 wLockDelay; +} __attribute__((packed)); + +#define UAC2_CONTROL_PITCH (3 << 0) +#define UAC2_CONTROL_DATA_OVERRUN (3 << 2) +#define UAC2_CONTROL_DATA_UNDERRUN (3 << 4) + /* 6.1 Interrupt Data Message */ #define UAC2_INTERRUPT_DATA_MSG_VENDOR (1 << 0) |
