[PATCH RFC 0/4] Add WCN3988 Bluetooth support for Fairphone 4

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Just to start with the important part why this is an RFC:

While Bluetooth chip init works totally fine and bluez seems to be
fairly happy with it, there's a (major) problem with scanning, as shown
with this bluetoothctl snippet and dmesg snippet:

  [bluetooth]# scan on
  Failed to start discovery: org.bluez.Error.InProgress

  [  202.371374] Bluetooth: hci0: Opcode 0x200b failed: -16

This opcode should be the following:

  include/net/bluetooth/hci.h:#define HCI_OP_LE_SET_SCAN_PARAM    0x200b

Unfortunately trying various existing code branches in the Bluetooth
driver doesn't show any sign of making this work and I don't really know
where to look to debug this further.

On the other hand "discoverable on" makes the device show up on other
devices during scanning , so the RF parts of the Bluetooth chip are
generally functional for sure.

Any ideas are welcome.

@Bjorn: Patch "arm64: dts: qcom: sm6350: add uart1 node" should be fine
to take regardless the RFC status, I don't think the problem is caused
there.

Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
---
Luca Weiss (4):
      dt-bindings: net: qualcomm: Add WCN3988
      Bluetooth: btqca: Add WCN3988 support
      arm64: dts: qcom: sm6350: add uart1 node
      arm64: dts: qcom: sm7225-fairphone-fp4: Add Bluetooth

 .../bindings/net/bluetooth/qualcomm-bluetooth.yaml |  2 +
 arch/arm64/boot/dts/qcom/sm6350.dtsi               | 63 ++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts  | 17 ++++++
 drivers/bluetooth/btqca.c                          | 13 ++++-
 drivers/bluetooth/btqca.h                          | 12 ++++-
 drivers/bluetooth/hci_qca.c                        | 12 +++++
 6 files changed, 115 insertions(+), 4 deletions(-)
---
base-commit: cf4c0112a0350cfe8a63b5eb3377e2366f57545b
change-id: 20230421-fp4-bluetooth-b36a0e87b9c8

Best regards,
-- 
Luca Weiss <luca.weiss@xxxxxxxxxxxxx>




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