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authorDaniel Mack <daniel@caiaq.de>2010-05-31 13:35:36 +0200
committerTakashi Iwai <tiwai@suse.de>2010-05-31 18:15:45 +0200
commitdcbe7bcfa32c5bc4f9bb6c75d4d41bb4db8c36fc (patch)
tree7cadc69ed8c6d3bd8df6f48cd640946b818200d6 /include
parent67a3e12b05e055c0415c556a315a3d3eb637e29e (diff)
downloadop-kernel-dev-dcbe7bcfa32c5bc4f9bb6c75d4d41bb4db8c36fc.zip
op-kernel-dev-dcbe7bcfa32c5bc4f9bb6c75d4d41bb4db8c36fc.tar.gz
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')
-rw-r--r--include/linux/usb/audio-v2.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h
index 92f1d99..8f91be3 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 {
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