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* [PATCH v7 0/4] Bug fixes for Qualcomm BT chip wcn3990.
@ 2018-12-28 11:48 Balakrishna Godavarthi
  2018-12-28 11:48 ` [PATCH v7 1/4] Bluetooth: hci_qca: use wait_until_sent() for power pulses Balakrishna Godavarthi
                   ` (3 more replies)
  0 siblings, 4 replies; 26+ messages in thread
From: Balakrishna Godavarthi @ 2018-12-28 11:48 UTC (permalink / raw)
  To: marcel, johan.hedberg
  Cc: mka, linux-kernel, linux-bluetooth, hemantg, linux-arm-msm,
	Balakrishna Godavarthi

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

   
4. btqca: inject command complete event during fw download
   
   Qualcomm latest chip will not send an command complete event
   for last packet of the fw dump sent, so here we are inject an command 
   complete event.

   * Bluetooth: btqca: inject command complete event during fw download

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 (4):
  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
  Bluetooth: btqca: inject command complete event during fw download

 drivers/bluetooth/btqca.c   | 39 +++++++++++++++++++-
 drivers/bluetooth/btqca.h   |  3 ++
 drivers/bluetooth/hci_qca.c | 73 +++++++++++++++++++------------------
 3 files changed, 79 insertions(+), 36 deletions(-)

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2019-02-08 21:05 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-12-28 11:48 [PATCH v7 0/4] Bug fixes for Qualcomm BT chip wcn3990 Balakrishna Godavarthi
2018-12-28 11:48 ` [PATCH v7 1/4] Bluetooth: hci_qca: use wait_until_sent() for power pulses Balakrishna Godavarthi
2018-12-28 17:20   ` Matthias Kaehlcke
2018-12-28 11:48 ` [PATCH v7 2/4] Bluetooth: hci_qca: Deassert RTS while baudrate change command Balakrishna Godavarthi
2018-12-28 11:48 ` [PATCH v7 3/4] Bluetooth: hci_qca: Disable IBS state machine and flush Tx buffer Balakrishna Godavarthi
2018-12-28 20:25   ` Matthias Kaehlcke
2018-12-28 11:48 ` [PATCH v7 4/4] Bluetooth: btqca: inject command complete event during fw download Balakrishna Godavarthi
2018-12-28 19:50   ` Matthias Kaehlcke
2018-12-29  7:18   ` Marcel Holtmann
2018-12-29  7:45     ` Balakrishna Godavarthi
2018-12-30  8:10       ` Marcel Holtmann
2018-12-31  6:04         ` Balakrishna Godavarthi
2018-12-31  8:03           ` Balakrishna Godavarthi
2019-01-02 22:15           ` Matthias Kaehlcke
2019-01-10 15:00             ` Balakrishna Godavarthi
2019-01-10 20:43               ` Matthias Kaehlcke
2019-01-11 14:23                 ` Balakrishna Godavarthi
2019-01-11 23:12                   ` Matthias Kaehlcke
2019-01-14 15:51                     ` Balakrishna Godavarthi
2019-01-15  1:20                       ` Matthias Kaehlcke
2019-01-16  9:36                         ` Balakrishna Godavarthi
2019-01-16 19:57                           ` Matthias Kaehlcke
2019-01-17 10:19                             ` Balakrishna Godavarthi
2019-01-18  8:57                               ` Marcel Holtmann
2019-01-18 21:03                                 ` Matthias Kaehlcke
2019-02-08 21:05                                   ` Matthias Kaehlcke

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