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usb: gadget: f_uac1: allow changing interface name via configfs

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This adds "function_name" configfs entry to change string value
of the iInterface field. This field will be shown in Windows' audio
settings panel, so being able to change it is useful. It will default
to "AC Interface" just as before if unchanged.

Signed-off-by: Yunhao Tian <t123yh.xyz@gmail.com>
Link: https://lore.kernel.org/r/20220122112446.1415547-1-t123yh.xyz@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yunhao Tian
2022-01-22 19:24:40 +08:00
committed by Greg Kroah-Hartman
parent d1d11dd130
commit dfb05b5dc3
4 changed files with 49 additions and 1 deletions
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1
Documentation/usb/gadget-testing.rst
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@@ -745,6 +745,7 @@ The uac2 function provides these attributes in its function directory:
p_volume_res playback volume control resolution (in 1/256 dB)
req_number the number of pre-allocated request for both capture
and playback
function_name name of the interface
================ ====================================================
The attributes have sane default values.