linux-kernel - Re: [PATCH] Bluetooth: btrtl: Ask ic

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Message-Id: <D5B18E08-AE60-4B8B-960B-694D62E067B5@holtmann.org>
Date:   Fri, 1 Oct 2021 11:42:10 +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>,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        kai.heng.feng@...onical.com, apusaka@...omium.org,
        max.chou@...ltek.com, alex_lu@...lsil.com.cn, kidman@...ltek.com
Subject: Re: [PATCH] Bluetooth: btrtl: Ask ic_info to drop firmware

Hi Hilda,

> Some un-support wakeup platforms keep USB power and suspend signal
> is coming late, this makes Realtek some chip keep its firmware,
> and make it never load new firmware.
> 
> So use vendor specific HCI command to ask them drop its firmware after
> system shutdown or resume.
> 
> Signed-off-by: Hilda Wu <hildawu@...ltek.com>
> ---
> drivers/bluetooth/btrtl.c | 12 +++++++-----
> 1 file changed, 7 insertions(+), 5 deletions(-)

patch has been applied to bluetooth-next tree.

Btw. is there a simple way (via vendor HCI commands or similar) to tell which RTL device supports the MSFT or AOSP extensions. I rather have this done once and not keep hacking it over and over again.

Regards

Marcel