ALSA: seq: Add ioctls for client UMP info query and setup

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Add new ioctls for sequencer clients to query and set the UMP endpoint
and block information.

As a sequencer client corresponds to a UMP Endpoint, one UMP Endpoint
information can be assigned at most to a single sequencer client while
multiple UMP block infos can be assigned by passing the type with the
offset of block id (i.e. type = block_id + 1).

For the kernel client, only SNDRV_SEQ_IOCTL_GET_CLIENT_UMP_INFO is
allowed.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-35-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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This commit is contained in:

Takashi Iwai 2023-05-23 09:53:55 +02:00

parent 4025f0e627

commit d2d247e35e

5 changed files with 153 additions and 2 deletions

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14

include/uapi/sound/asequencer.h

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