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usb: gadget: f_uac2: Expose all string descriptors through configfs.

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This makes all string descriptors configurable for the UAC2 gadget
so the user can configure names of terminals and controls. Alt mode
names are not included for now and will be in future work related
to adding alternate settings.

discussion thread for api changes for alt mode settings:
https://lore.kernel.org/linux-usb/35be4668-58d3-894a-72cf-de1afaacae45@ivitera.com/T/

Signed-off-by: Chris Wulff <chris.wulff@biamp.com>
Link: https://lore.kernel.org/r/20240804001923.3279431-2-crwulff@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chris Wulff
2024-08-03 20:19:24 -04:00
committed by Greg Kroah-Hartman
parent 2919d88879
commit 8952e50e16
4 changed files with 99 additions and 18 deletions
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11
Documentation/usb/gadget-testing.rst
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@@ -765,6 +765,17 @@ The uac2 function provides these attributes in its function directory:
req_number the number of pre-allocated request for both capture
and playback
function_name name of the interface
if_ctrl_name topology control name
clksrc_in_name input clock name
clksrc_out_name output clock name
p_it_name playback input terminal name
p_it_ch_name playback input first channel name
p_ot_name playback output terminal name
p_fu_vol_name playback function unit name
c_it_name capture input terminal name
c_it_ch_name capture input first channel name
c_ot_name capture output terminal name
c_fu_vol_name capture functional unit name
c_terminal_type code of the capture terminal type
p_terminal_type code of the playback terminal type
================ ====================================================