linux-kernel - Re: [PATCH v2] Bluetooth: btusb: Add support USB ALT 3 for WBS

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Message-Id: <E9F68188-F920-4CBA-95D4-4270472D63D6@holtmann.org>
Date:   Thu, 20 May 2021 17:23:41 +0200
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Hilda Wu <hildawu@...ltek.com>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        "open list:BLUETOOTH SUBSYSTEM" <linux-bluetooth@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Max Chou <max.chou@...ltek.com>,
        Alex Lu <alex_lu@...lsil.com.cn>, kidman@...ltek.com
Subject: Re: [PATCH v2] Bluetooth: btusb: Add support USB ALT 3 for WBS

Hi Hilda,

> Because mSBC frames do not need to be aligned to the SCO packet
> boundary. Using USB ALT 3 let HCI payload >= 60 bytes, let mSBC
> data satisfy 60 Bytes avoid payload unaligned situation and fixed
> some headset no voise issue.
> 
> USB Alt 3 supported also need HFP support transparent MTU in 72 Bytes.
> 
> Signed-off-by: Hilda Wu <hildawu@...ltek.com>
> ---
> Changes in v2:
> - Updated signed off name.
> - Adjusted coding style.
> ---
> ---
> drivers/bluetooth/btusb.c | 7 +++++++
> 1 file changed, 7 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel