Michael Grzeschik 3237d532d5 UPSTREAM: usb: gadget: uvc: default the ctrl request interface offsets ...

For the userspace it is needed to distinguish between requests for the
control or streaming interface. The userspace would have to parse the
configfs to know which interface index it has to compare the ctrl
requests against. Since the interface numbers are not fixed, e.g. for
composite gadgets, the interface offset depends on the setup.

The kernel has this information when handing over the ctrl request to
the userspace. This patch removes the offset from the interface numbers
and expose the default interface defines in the uapi g_uvc.h.

Change-Id: Idb6845c962d3da6d2a96c5d5e0083b39e5bba8af
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20221011075348.1786897-1-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: William Wu <william.wu@rock-chips.com>
(cherry picked from commit d182bf156c4cb8b08ce4a75e82b3357b14a4382d)

2025-03-31 14:30:59 +08:00

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audio.h

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cdc-wdm.h

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cdc.h

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ch9.h

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ch11.h

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charger.h

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functionfs.h

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g_printer.h

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g_uvc.h

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gadgetfs.h

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midi.h

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raw_gadget.h

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tmc.h

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video.h

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