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authorTakashi Iwai <tiwai@suse.de>2021-11-16 07:54:14 +0100
committerTakashi Iwai <tiwai@suse.de>2021-11-16 07:55:15 +0100
commit85b741c1cb6854478fd1aa13ac231e2c1baf4c4b (patch)
tree55635183e461f3699c28b1d3c6450c3c62b9cbc8 /sound/usb/mixer.c
parentfd23116d7b8dffa05f42a857eee6ee9cce238d24 (diff)
ALSA: usb-audio: Add minimal-mute notion in dB mapping table
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>
Diffstat (limited to 'sound/usb/mixer.c')
-rw-r--r--sound/usb/mixer.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 6e7bac8203ba..5b9fd07ce2a2 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -145,6 +145,7 @@ static inline void check_mapped_dB(const struct usbmix_name_map *p,
if (p && p->dB) {
cval->dBmin = p->dB->min;
cval->dBmax = p->dB->max;
+ cval->min_mute = p->dB->min_mute;
cval->initialized = 1;
}
}