ALSA: usb-audio: Add minimal-mute notion in dB mapping table

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Some devices do mute the volume at the minimal volume, and for such
devices, we need to set SNDRV_CTL_TLVT_DB_MINMAX_MUTE to the TLV
information.  It corresponds to setting usb_mixer_elem_info.min_mute
flag in the USB-audio driver.

This patch adds a new field min_mute in usbmix_dB_map so that the
mixer map entry can pass the flag.

Link: https://lore.kernel.org/r/20211116065415.11159-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Takashi Iwai 2021-11-16 07:54:14 +01:00

parent fd23116d7b

commit 85b741c1cb

2 changed files with 2 additions and 0 deletions

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sound/usb/mixer.c

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sound/usb/mixer_maps.c

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