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| author | Jelle Raaijmakers <jelle@gmta.nl> | 2021-11-25 19:37:11 +0100 |
|---|---|---|
| committer | Andreas Kling <kling@serenityos.org> | 2021-11-26 22:15:29 +0100 |
| commit | 58bcb93777516eaadd1ed5a4d9088681b6577250 (patch) | |
| tree | 8296641859364c58de67ab09c6d190cf43f8ad35 /Userland/Utilities/cat.cpp | |
| parent | 377a984905e6443a680f7b45a1cb9c753a16335a (diff) | |
| download | serenity-58bcb93777516eaadd1ed5a4d9088681b6577250.zip | |
Kernel: Implement variable rate audio support for AC97 devices
Previously we `VERIFY()`ed that the device supports variable-rate audio
(VRA). Now, we query the VRA bit and if VRA is not supported, we do not
enable double-rate audio and disallow setting any sample rate except
the fixed 48kHz rate as defined by the AC'97 specification. This should
allow the driver to function on a wider array of hardware.
Note that in the AC'97 specification, DRA without VRA is allowed when
supported: this effectively doubles the sample rate to 96kHZ. For now,
we ignore that possibility and let it default to 48kHZ.
Diffstat (limited to 'Userland/Utilities/cat.cpp')
0 files changed, 0 insertions, 0 deletions