linux-kernel - Re: [PATCH v2 2/2] Bluetooth: hci_qca: Enable HFP hardware offload for WCN6855

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Message-ID: <cx3yjz2nrwe6iwqorx537qzoz4qc3yefpln5ed7z3ocgeqlwq3@arj7auyyfutl>
Date: Fri, 30 Jan 2026 04:31:35 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Mengshi Wu <mengshi.wu@....qualcomm.com>
Cc: Bartosz Golaszewski <brgl@...nel.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, shuai.zhang@....qualcomm.com,
        cheng.jiang@....qualcomm.com, chezhou@....qualcomm.com,
        wei.deng@....qualcomm.com, yiboz@....qualcomm.com
Subject: Re: [PATCH v2 2/2] Bluetooth: hci_qca: Enable HFP hardware offload
 for WCN6855

On Wed, Jan 28, 2026 at 11:17:49AM +0800, Mengshi Wu wrote:
> Hi, 
> 
> On 1/27/2026 11:06 PM, Dmitry Baryshkov wrote:
> > On Tue, Jan 27, 2026 at 10:32:58AM +0800, Mengshi Wu wrote:
> >>
> >>
> >> On 1/27/2026 1:51 AM, Dmitry Baryshkov wrote:
> >>> On Tue, Jan 27, 2026 at 12:24:44AM +0800, Mengshi Wu wrote:
> >>>> Add QCA_CAP_HFP_HW_OFFLOAD capability flag to WCN6855 device
> >>>> data structures to enable Hands-Free Profile (HFP) hardware
> >>>> offload support on these Qualcomm Bluetooth chipsets.
> >>>>
> >>>> Signed-off-by: Mengshi Wu <mengshi.wu@....qualcomm.com>
> >>>> ---
> >>>>  drivers/bluetooth/hci_qca.c | 3 ++-
> >>>>  1 file changed, 2 insertions(+), 1 deletion(-)
> >>>>
> >>>
> >>> Any other chips which would benefit from this flag? If you are setting
> >>> it for WCN6855, I'd assume that it also applies to WCN7850. Should it be
> >>> set for WCN6750?
> >>>
> >>
> >> Thanks for the reminder. This should also apply to WCN7850. WCN6750 is not
> >> considered at this time.
> > 
> > What does it mean? It either supports HFP ofload, or not. Does it?
> > 
> 
> We have not yet enabled the WCN6750 hardware offload feature from the
> software side. Other chips will support this feature subsequently. If
> I add the flag too early, it may be kind of misleading since the feature
> is not really ready yet.

By the software side do you mean BT firmware or something else?

-- 
With best wishes
Dmitry