| Message ID | 1590719360-28257-1-git-send-email-zijuhu@codeaurora.org (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Marcel Holtmann |
| Headers | show |
| Series | [v1] Bluetooth: hci_qca: Fix qca6390 enable failure after warm reboot | expand |
Hi Zijun, > On May 29, 2020, at 04:29, Zijun Hu <zijuhu@codeaurora.org> wrote: > > Warm reboot can not reset controller qca6390 due to > lack of controllable power supply, so causes firmware > download failure during enable. > > Fixed by sending VSC EDL_SOC_RESET to reset qca6390 > within added device shutdown implementation. > > Signed-off-by: Zijun Hu <zijuhu@codeaurora.org> > Tested-by: Zijun Hu <zijuhu@codeaurora.org> > --- > drivers/bluetooth/hci_qca.c | 33 +++++++++++++++++++++++++++++++++ > 1 file changed, 33 insertions(+) patch does not apply to bluetooth-next tree, please rebase. Regards Marcel
On 5/29/2020 7:45 PM, Marcel Holtmann wrote: > Hi Zijun, > >> On May 29, 2020, at 04:29, Zijun Hu <zijuhu@codeaurora.org> wrote: >> >> Warm reboot can not reset controller qca6390 due to >> lack of controllable power supply, so causes firmware >> download failure during enable. >> >> Fixed by sending VSC EDL_SOC_RESET to reset qca6390 >> within added device shutdown implementation. >> >> Signed-off-by: Zijun Hu <zijuhu@codeaurora.org> >> Tested-by: Zijun Hu <zijuhu@codeaurora.org> >> --- >> drivers/bluetooth/hci_qca.c | 33 +++++++++++++++++++++++++++++++++ >> 1 file changed, 33 insertions(+) > > patch does not apply to bluetooth-next tree, please rebase. > rebased at v2 > Regards > > Marcel >
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index e4a6823..f525656 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1975,6 +1975,38 @@ static void qca_serdev_remove(struct serdev_device *serdev) hci_uart_unregister_device(&qcadev->serdev_hu); } +static void qca_serdev_shutdown(struct device *dev) +{ + int ret; + int timeout = msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS); + struct serdev_device *serdev = to_serdev_device(dev); + struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); + const u8 ibs_wake_cmd[] = { 0xFD }; + const u8 edl_reset_soc_cmd[] = { 0x01, 0x00, 0xFC, 0x01, 0x05 }; + + if (qcadev->btsoc_type == QCA_QCA6390) { + serdev_device_write_flush(serdev); + ret = serdev_device_write_buf(serdev, ibs_wake_cmd, + sizeof(ibs_wake_cmd)); + if (ret < 0) { + BT_ERR("QCA send IBS_WAKE_IND error: %d", ret); + return; + } + serdev_device_wait_until_sent(serdev, timeout); + usleep_range(8000, 10000); + + serdev_device_write_flush(serdev); + ret = serdev_device_write_buf(serdev, edl_reset_soc_cmd, + sizeof(edl_reset_soc_cmd)); + if (ret < 0) { + BT_ERR("QCA send EDL_RESET_REQ error: %d", ret); + return; + } + serdev_device_wait_until_sent(serdev, timeout); + usleep_range(8000, 10000); + } +} + static int __maybe_unused qca_suspend(struct device *dev) { struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); @@ -2100,6 +2132,7 @@ static struct serdev_device_driver qca_serdev_driver = { .name = "hci_uart_qca", .of_match_table = of_match_ptr(qca_bluetooth_of_match), .acpi_match_table = ACPI_PTR(qca_bluetooth_acpi_match), + .shutdown = qca_serdev_shutdown, .pm = &qca_pm_ops, }, };