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usb: gadget: u_audio: Support multiple sampling rates

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Implement support for multiple sampling rates in u_audio part of the
audio gadget. The currently configured rates are exposed through
read-only amixer controls 'Capture Rate' and 'Playback Rate'.

Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20220121155308.48794-3-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julian Scheel
2022-01-21 16:53:00 +01:00
committed by Greg Kroah-Hartman
parent ce6a7bfbe5
commit c565ad07ef
5 changed files with 152 additions and 2 deletions
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9
drivers/usb/gadget/function/uac_common.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
*/
#ifndef UAC_COMMON_H
#define UAC_COMMON_H
#define UAC_MAX_RATES 10 /* maximum number of rates configurable by f_uac1/2 */
#endif