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References: <20230228152205.133582-1-macroalpha82@gmail.com> <20230228152205.133582-3-macroalpha82@gmail.com>
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From:   Chris Morgan <macroalpha82@gmail.com>
Date:   Fri, 10 Mar 2023 10:25:41 -0600
Message-ID: <CADcbR4+Onb6RM7grPrqRL8Rth0mbFXykRmPq8R1QxYRGaHQHtA@mail.gmail.com>
Subject: Re: [PATCH 2/3 V4] Bluetooth: hci_h5: btrtl: Add support for RTL8821CS
To:     linux-bluetooth@vger.kernel.org
Cc:     linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
        alistair@alistair23.me, anarsoul@gmail.com, luiz.dentz@gmail.com,
        johan.hedberg@gmail.com, marcel@holtmann.org, heiko@sntech.de,
        krzysztof.kozlowski+dt@linaro.org, robh+dt@kernel.org,
        Chris Morgan <macromorgan@hotmail.com>
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I shudder to bring this up now, but I'm encountering a new bug and
might have to withdraw this.

I'm receiving errors in dmesg of the following, and I can't seem to
figure out the root cause:
Bluetooth: hci0: Out-of-order packet arrived

Any thoughts on what might cause it?
Thank you.

On Tue, Feb 28, 2023 at 9:22=E2=80=AFAM Chris Morgan <macroalpha82@gmail.co=
m> wrote:
>
> From: Chris Morgan <macromorgan@hotmail.com>
>
> RTL8821CS is a WiFi + Bluetooth combo chip from Realtek that provides
> WiFi A/B/G/N/AC over an SDIO interface and Bluetooth 4.2 over a UART
> interface.
>
> Note that the firmware this was tested with was firmware version
> 0x75b8f098.
>
> Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
> ---
>  drivers/bluetooth/btrtl.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
> index 69c3fe649ca7..72947d319fa6 100644
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@ -128,6 +128,14 @@ static const struct id_table ic_id_table[] =3D {
>           .fw_name  =3D "rtl_bt/rtl8821c_fw.bin",
>           .cfg_name =3D "rtl_bt/rtl8821c_config" },
>
> +       /* 8821CS */
> +       { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART),
> +         .config_needed =3D true,
> +         .has_rom_version =3D true,
> +         .has_msft_ext =3D true,
> +         .fw_name  =3D "rtl_bt/rtl8821cs_fw.bin",
> +         .cfg_name =3D "rtl_bt/rtl8821cs_config" },
> +
>         /* 8761A */
>         { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB),
>           .config_needed =3D false,
> --
> 2.34.1
>