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Date:   Thu, 13 Aug 2020 16:41:27 +0800
From:   Joseph Hwang <>
        Joseph Hwang <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Johan Hedberg <>,,
Subject: [PATCH v1 0/2] To support the HFP WBS, a chip vendor may choose a particular

USB alternate seeting of which the packet size is distinct.
The patches are to expose the packet size to user space so that
the user space does not need to hard code those values.

We have verified this patch on Chromebooks which use
- Realtek 8822CE controller with USB alt setting 1
- Intel controller with USB alt setting 6
Our user space audio server, cras, can get the correct
packet length from the socket option.

Joseph Hwang (2):
  Bluetooth: btusb: define HCI packet sizes of USB Alts
  Bluetooth: sco: expose WBS packet length in socket option

 drivers/bluetooth/btusb.c         | 43 +++++++++++++++++++++++--------
 include/net/bluetooth/bluetooth.h |  2 ++
 include/net/bluetooth/hci_core.h  |  1 +
 net/bluetooth/sco.c               |  8 ++++++
 4 files changed, 43 insertions(+), 11 deletions(-)


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