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usb: gadget: f_uac2: allow changing terminal types through configfs

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Add "c_terminal_type" and "p_terminal_type" configfs entries
in order to allow the user to change the capture and playback terminal
type codes.

These fields affect the type of audio device that Windows detects, so
being able to modify this is useful when it would be advantageous for
a gadget to be detected as something other than a generic
speaker/microphone.

The fields default to microphone for the capture type field and speaker
for the playback type field as was the case before.

Signed-off-by: James Gruber <jimmyjgruber@gmail.com>
Link: https://lore.kernel.org/r/20230914222746.155126-1-jimmyjgruber@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Gruber
2023-09-14 15:27:46 -07:00
committed by Greg Kroah-Hartman
parent af31320194
commit de2eb28cdb
4 changed files with 26 additions and 2 deletions
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2
Documentation/ABI/testing/configfs-usb-gadget-uac2
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@@ -35,4 +35,6 @@ Description:
req_number the number of pre-allocated requests
for both capture and playback
function_name name of the interface
c_terminal_type code of the capture terminal type
p_terminal_type code of the playback terminal type
===================== =======================================