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bluez5: add quirk for LC3-24kHz for HFP

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MT7925 fails to setup a SCO connection that results to working LC3-24kHz
audio. Other controllers (Intel etc) appear to work OK.

Add quirk for disabling this codec, and disable it for this Mediatek
controller.
This commit is contained in:
Pauli Virtanen 2026-04-16 22:51:51 +03:00 • committed by Wim Taymans
parent 6e8e234e61
commit 84e6845aa6
4 changed files with 17 additions and 1 deletions
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7
spa/plugins/bluez5/backend-native.c
View file

@ -904,7 +904,7 @@ static bool device_supports_codec(struct impl *backend, struct spa_bt_device *de
{
int res;
bool alt6_ok = true, alt1_ok = true;
bool msbc_alt6_ok = true, msbc_alt1_ok = true;
bool msbc_alt6_ok = true, msbc_alt1_ok = true, lc3_a127_ok = true;
uint32_t bt_features;
if (device->adapter == NULL)
@ -913,6 +913,7 @@ static bool device_supports_codec(struct impl *backend, struct spa_bt_device *de
if (backend->quirks && spa_bt_quirks_get_features(backend->quirks, device->adapter, device, &bt_features) == 0) {
msbc_alt1_ok = (bt_features & (SPA_BT_FEATURE_MSBC_ALT1 | SPA_BT_FEATURE_MSBC_ALT1_RTL));
msbc_alt6_ok = (bt_features & SPA_BT_FEATURE_MSBC);
lc3_a127_ok = (bt_features & SPA_BT_FEATURE_LC3_A127);
}
switch (codec) {
@ -922,6 +923,10 @@ static bool device_supports_codec(struct impl *backend, struct spa_bt_device *de
alt1_ok = msbc_alt1_ok;
alt6_ok = msbc_alt6_ok;
break;
case SPA_BLUETOOTH_AUDIO_CODEC_LC3_A127:
alt1_ok = false;
alt6_ok = lc3_a127_ok;
break;
case SPA_BLUETOOTH_AUDIO_CODEC_LC3_SWB:
default:
/* LC3-SWB has same transport requirements as msbc.