From: Marcel Holtmann <marcel@holtmann.org>
To: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>,
mka@chromium.org, linux-kernel@vger.kernel.org,
linux-bluetooth@vger.kernel.org, hemantg@codeaurora.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v11 0/3] Bug fixes for Qualcomm BT chip wcn3990
Date: Mon, 18 Feb 2019 11:50:51 +0100 [thread overview]
Message-ID: <CB022FBC-122B-41D8-A7C1-DD29276C3A3A@holtmann.org> (raw)
In-Reply-To: <20190204150643.25165-1-bgodavar@codeaurora.org>
Hi Balakrishna,
> The below issues are found in our recent testing.
>
> 1. Observed device is not going into off state or not responding.
> As wcn3990 require a power pulses to turn on the irrespctive of
> igniting regulators, it was observed that power on or power off
> pulses are not in sync with respective to chip.
> The below patch will help us to wait until byte is pushed on to wires.
>
> * Bluetooth: hci_qca: use wait_until_sent() for power pulses
>
> 2. Observed Chip responding when we are in sleep.
> This is due to turn on flow control during change baudrate request.
> The below patch will only pull the RTS line high instead of turning off
> the flow.
>
> * Bluetooth: hci_qca: Pull RTS line high for baudrate change command.
>
> 3. Disable IBS state machine and flush Tx buffer
> We are disabling IBS and flushing the Tx buffer before turning off the chip.
>
> This is due to IBS state machine is active when we turn off the chip.
> This will stop queuing IBS protocol bytes.
>
> * Bluetooth: hci_qca: Disable IBS state machine and flush Tx buffer
>
> Changes in v11:
> * added correct signatures for the patch.
>
> Changes in v10:
> * Decreased wait time for power pulse to 100 ms instead of 1second.
> * enabling the flow control back when baudarte change request fails.
> * updated review comments.
>
> Changes in v9:
> * Reverted the 100us delay and used msecs to jiffies inline call.
> * Disabling the flow control and enabling it back while setting the firmware.
> * Added spinlock while clearing the IBS state machine.
>
> Changes in v8:
> * dropped inject the command complete event.
> * added one second time for the power pules instead of the indefinite time.
>
> Changes in v7:
> * dropped frame reassmebly error patch.
> * dropped baudrate change wait time patch.
> * increased a wait to 5 ms for power pulses.
>
> Changes in v6:
> * added serdev_device_write_flush in qca_send_power_pulse().
> * added new patch to update the baudrate change wait time.
>
> Changes in V5:
> * added serdev_device_write_flush before sending the power off pulse
> during shutdown.
>
> Changes in v4:
> * used serdev_device_write_buf() instead of serdev_device_write().
> * added new patch to stop logging of 0xfc00 timeout on console.
>
> Changes in v3:
> * moved IBS & qca_flush to different patch
> * updated comments in code fo Deassert RTS patch
> Balakrishna Godavarthi (3):
> Bluetooth: hci_qca: use wait_until_sent() for power pulses
> Bluetooth: hci_qca: Deassert RTS while baudrate change command
> Bluetooth: hci_qca: Disable IBS state machine and flush Tx buffer
>
> drivers/bluetooth/hci_qca.c | 82 ++++++++++++++++++++-----------------
> 1 file changed, 44 insertions(+), 38 deletions(-)
all 3 patches have been applied to bluetooth-next tree.
Regards
Marcel
prev parent reply other threads:[~2019-02-18 10:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-04 15:06 [PATCH v11 0/3] Bug fixes for Qualcomm BT chip wcn3990 Balakrishna Godavarthi
2019-02-04 15:06 ` [PATCH v11 1/3] Bluetooth: hci_qca: use wait_until_sent() for power pulses Balakrishna Godavarthi
2019-02-04 15:06 ` [PATCH v11 2/3] Bluetooth: hci_qca: Deassert RTS while baudrate change command Balakrishna Godavarthi
2019-02-04 15:06 ` [PATCH v11 3/3] Bluetooth: hci_qca: Disable IBS state machine and flush Tx buffer Balakrishna Godavarthi
2019-02-04 17:31 ` Matthias Kaehlcke
2019-02-18 10:50 ` Marcel Holtmann [this message]
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