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-rw-r--r--include/uapi/linux/usb/audio.h49
1 files changed, 40 insertions, 9 deletions
diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
index 74e520fb944f..ddc5396800aa 100644
--- a/include/uapi/linux/usb/audio.h
+++ b/include/uapi/linux/usb/audio.h
@@ -390,33 +390,64 @@ static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_
static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
int protocol)
{
- return (protocol == UAC_VERSION_1) ?
- desc->baSourceID[desc->bNrInPins + 4] :
- 2; /* in UAC2, this value is constant */
+ switch (protocol) {
+ case UAC_VERSION_1:
+ return desc->baSourceID[desc->bNrInPins + 4];
+ case UAC_VERSION_2:
+ return 2; /* in UAC2, this value is constant */
+ case UAC_VERSION_3:
+ return 4; /* in UAC3, this value is constant */
+ default:
+ return 1;
+ }
}
static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
int protocol)
{
- return (protocol == UAC_VERSION_1) ?
- &desc->baSourceID[desc->bNrInPins + 5] :
- &desc->baSourceID[desc->bNrInPins + 6];
+ switch (protocol) {
+ case UAC_VERSION_1:
+ return &desc->baSourceID[desc->bNrInPins + 5];
+ case UAC_VERSION_2:
+ return &desc->baSourceID[desc->bNrInPins + 6];
+ case UAC_VERSION_3:
+ return &desc->baSourceID[desc->bNrInPins + 2];
+ default:
+ return NULL;
+ }
}
static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
- return *(uac_processing_unit_bmControls(desc, protocol)
- + control_size);
+
+ switch (protocol) {
+ case UAC_VERSION_1:
+ case UAC_VERSION_2:
+ default:
+ return *(uac_processing_unit_bmControls(desc, protocol)
+ + control_size);
+ case UAC_VERSION_3:
+ return 0; /* UAC3 does not have this field */
+ }
}
static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
- return uac_processing_unit_bmControls(desc, protocol)
+
+ switch (protocol) {
+ case UAC_VERSION_1:
+ case UAC_VERSION_2:
+ default:
+ return uac_processing_unit_bmControls(desc, protocol)
+ control_size + 1;
+ case UAC_VERSION_3:
+ return uac_processing_unit_bmControls(desc, protocol)
+ + control_size;
+ }
}
/* 4.5.2 Class-Specific AS Interface Descriptor */