[PATCH v2 0/2] Bluetooth: Broadcom controllers of the Apple T2 Macs

[Andre Eikmeyer]

Hello everyone,

This series is for the Broadcom Bluetooth controllers of the Apple T2
Macs, the BCM4364 over UART (hci_bcm) and the BCM4377 over PCIe
(hci_bcm4377).

Patch 1 builds on a vendor command the Android Broadcom vendor library
uses, 0xfc57, to keep A2DP from dropping out while WLAN runs on 2.4 GHz.
Patch 2 sets the strict duplicate filter quirk in both drivers, so a
discovery reports changed advertisement data before its next cycle.

The KaiT2en community, about 280 members, runs these patches with its
kernels. Users reported them working on the MacBookPro15,1, 15,2, 15,3,
15,4, 16,1, 16,4, MacBookAir9,1 and iMac20,1, and nobody reported a
regression.

Changes in v2:
- Dropped "Bluetooth: btbcm: clear vendor bits in LE advertising report
  types" and the revert of 88397423671f. The mask in hci_event.c stays
  as it is.
- Link to v1:
  https://lore.kernel.org/all/20261104151601.70493-1-dev@deq.rocks/



Andre Eikmeyer (2):
  Bluetooth: btbcm: raise ACL priority on Apple Broadcom controllers
  Bluetooth: set the strict duplicate filter quirk on Apple Broadcom
    controllers

 drivers/bluetooth/Kconfig       |  1 +
 drivers/bluetooth/btbcm.c       | 71 +++++++++++++++++++++++++++++++++
 drivers/bluetooth/btbcm.h       |  7 ++++
 drivers/bluetooth/hci_bcm.c     | 23 +++++++++--
 drivers/bluetooth/hci_bcm4377.c |  8 ++++
 5 files changed, 107 insertions(+), 3 deletions(-)


base-commit: 3f425f95ba3923d605f6a8b382e8fcdc59d479db