diff options
| author | Daniel Mack <daniel@caiaq.de> | 2010-05-31 13:35:36 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-05-31 18:15:45 +0200 |
| commit | dcbe7bcfa32c5bc4f9bb6c75d4d41bb4db8c36fc (patch) | |
| tree | 7cadc69ed8c6d3bd8df6f48cd640946b818200d6 /include/linux/usb | |
| parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
ALSA: usb-audio: UAC2: clean up parsing of bmaControls
Introduce two new static inline functions for a more readable parsing
of UAC2 bmaControls.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/audio-v2.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h index 92f1d99f0f1..8f91be3599c 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 { |