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    SubjectRe: [PATCH v2] rtl8xxxu: add bluetooth co-existence support for single antenna
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    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

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