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| author | Takashi Iwai <tiwai@suse.de> | 2020-11-23 09:53:45 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-11-23 15:17:24 +0100 |
| commit | 62abd092f97b33a33fcdb98c30bc01f2b1c55d04 (patch) | |
| tree | 15532ccf444ab91345aa4a3c1ee0a7c5e7acaca4 /Documentation/sound | |
| parent | 83b7dcbc51c930fc2079ab6c6fc9d719768321f1 (diff) | |
| download | lwn-62abd092f97b33a33fcdb98c30bc01f2b1c55d04.tar.gz lwn-62abd092f97b33a33fcdb98c30bc01f2b1c55d04.zip | |
ALSA: usb-audio: Add implicit_fb module option
A new module option, implicit_fb, is added to specify the driver
looking for the implicit feedback sync. This can be useful for a
device that could be working better in the implicit feed back mode and
user wants to test it quickly. When this works, we can add the quirk
entry easily.
Tested-by: Keith Milner <kamilner@superlative.org>
Tested-by: Dylan Robinson <dylan_robinson@motu.com>
Link: https://lore.kernel.org/r/20201123085347.19667-40-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa-configuration.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst index c755b1c5e16f..fe52c314b763 100644 --- a/Documentation/sound/alsa-configuration.rst +++ b/Documentation/sound/alsa-configuration.rst @@ -2227,6 +2227,11 @@ quirk_alias Quirk alias list, pass strings like ``0123abcd:5678beef``, which applies the existing quirk for the device 5678:beef to a new device 0123:abcd. +implicit_fb + Apply the generic implicit feedback sync mode. When this is set + and the playback stream sync mode is ASYNC, the driver tries to + tie an adjacent ASYNC capture stream as the implicit feedback + source. use_vmalloc Use vmalloc() for allocations of the PCM buffers (default: yes). For architectures with non-coherent memory like ARM or MIPS, the |