linux-kernel - Re: [RESEND v1 0/2] Close UART port if NON_PERSISTENT

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Date:   Fri, 11 Sep 2020 09:10:39 +0200
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Venkata Lakshmi Narayana Gubba <gubbaven@...eaurora.org>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux-bluetooth <linux-bluetooth@...r.kernel.org>,
        Hemantg <hemantg@...eaurora.org>,
        MSM <linux-arm-msm@...r.kernel.org>,
        Balakrishna Godavarthi <bgodavar@...eaurora.org>,
        rjliao@...eaurora.org, hbandi@...eaurora.org,
        abhishekpandit@...omium.org
Subject: Re: [RESEND v1 0/2] Close UART port if NON_PERSISTENT_SETUP is set

Hi Venkata,

> When HCI_QUIRK_NON_PERSISTENT_SETUP is set by drivers,
> it indicates that BT SoC will be completely powered OFF
> during BT OFF. On next BT ON firmware must be downloaded
> again. Holding UART port open during BT OFF is draining
> the battery. Now during BT OFF, UART port is closed if
> qurik HCI_QUIRK_NON_PERSISTENT_SETUP is set by clearing
> HCI_UART_PROTO_READY proto flag. On next BT ON, UART
> port is opened if HCI_UART_PROTO_READY proto flag is cleared.
> 
> Venkata Lakshmi Narayana Gubba (2):
>  Bluetooth: hci_serdev: Close UART port if NON_PERSISTENT_SETUP is set
>  Bluetooth: hci_qca: Remove duplicate power off in proto close
> 
> drivers/bluetooth/hci_qca.c    |  5 ++---
> drivers/bluetooth/hci_serdev.c | 36 +++++++++++++++++++++++++++++++++---
> 2 files changed, 35 insertions(+), 6 deletions(-)

both patches have been applied to bluetooth-next tree.

Regards

Marcel