From: Kalle Valo <kvalo@codeaurora.org>
To: Chris Chiu <chiu@endlessm.com>
Cc: Jes.Sorensen@gmail.com, davem@davemloft.net,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux@endlessm.com
Subject: Re: [PATCH v2] rtl8xxxu: add bluetooth co-existence support for single antenna
Date: Wed, 2 Oct 2019 04:21:32 +0000 (UTC) [thread overview]
Message-ID: <20191002042132.1E0FD60A4E@smtp.codeaurora.org> (raw)
In-Reply-To: <20190911025045.20918-1-chiu@endlessm.com>
Chris Chiu <chiu@endlessm.com> wrote:
> The RTL8723BU suffers the wifi disconnection problem while bluetooth
> device connected. While wifi is doing tx/rx, the bluetooth will scan
> without results. This is due to the wifi and bluetooth share the same
> single antenna for RF communication and they need to have a mechanism
> to collaborate.
>
> BT information is provided via the packet sent from co-processor to
> host (C2H). It contains the status of BT but the rtl8723bu_handle_c2h
> dose not really handle it. And there's no bluetooth coexistence
> mechanism to deal with it.
>
> This commit adds a workqueue to set the tdma configurations and
> coefficient table per the parsed bluetooth link status and given
> wifi connection state. The tdma/coef table comes from the vendor
> driver code of the RTL8192EU and RTL8723BU. However, this commit is
> only for single antenna scenario which RTL8192EU is default dual
> antenna. The rtl8xxxu_parse_rxdesc24 which invokes the handle_c2h
> is only for 8723b and 8192e so the mechanism is expected to work
> on both chips with single antenna. Note RTL8192EU dual antenna is
> not supported.
>
> Signed-off-by: Chris Chiu <chiu@endlessm.com>
As Jes was positive about this in v1 and had only cosmetic comments, I'm
planning to apply this. If there are any changes needed, those can be fixed in
a followup patch.
--
https://patchwork.kernel.org/patch/11140223/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
next prev parent reply other threads:[~2019-10-02 4:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 2:50 [PATCH v2] rtl8xxxu: add bluetooth co-existence support for single antenna Chris Chiu
2019-09-19 1:44 ` Chris Chiu
2019-10-01 9:32 ` Chris Chiu
2019-10-02 4:21 ` Kalle Valo [this message]
2019-10-02 4:29 ` Kalle Valo
[not found] ` <20191002042911.2E755611BF@smtp.codeaurora.org>
2019-10-02 12:38 ` Chris Chiu
2019-10-02 16:37 ` Kalle Valo
2019-10-02 15:03 ` Jes Sorensen
2019-10-03 1:19 ` Chris Chiu
2019-10-04 15:11 ` Jes Sorensen
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