[v4,0/4] Bluetooth: btusb: MediaTek ISO data transmission

Message

Chris Lu June 6, 2024, 11:43 a.m. UTC

Since SIG has not yet clearly defined the specification for ISO data
transmission over USB, MediaTek has adopted a method of adding an
additional interrupt endpoint for ISO data transmission. This approach
differs from the current method used in the Bluetooth upstream driver,
which utilizes existing bulk endpoints. The interrupt endpoint provides
guaranteed bandwidth, sufficient maximum data length for ISO packets
and error checking.

Certain new functions related to USB transportation, such as urb
allocation and submission, are implemented in btusb.c to leverage
existing functions and data structures defined therein. Meanwhile,
vendor-specific functions unrelated to transportation have been moved
to btmtk.c to streamline btusb.c.

---
Change in v4:
-Fix warning report from bluez.test.bot in btmtk.c.

Change in v3:
-Refactor ISO data transmission flow, keeping the parts related to USB
transmission in btusb.c and moving the rest to btmtk.c

Change in v2:
-Fix warning report from bluez.test.bot in btusb.c, align with other
packet type to parsing dlen when getting iso data.
---

Chris Lu (4):
  Bluetooth: net: add hci_iso_hdr function for iso data
  Bluetooth: btusb: add callback function in btusb suspend/resume
  Bluetooth: btmtk: add macro to get/set/clear MediaTek defined flags
  Bluetooth: btusb: mediatek: add ISO data transmission functions

 drivers/bluetooth/btmtk.c   |  94 ++++++++++++
 drivers/bluetooth/btmtk.h   |  61 ++++++++
 drivers/bluetooth/btusb.c   | 276 ++++++++++++++++++++++++++++++++++++
 include/net/bluetooth/hci.h |   5 +
 4 files changed, 436 insertions(+)