| Message ID | 1590644248-9373-1-git-send-email-zijuhu@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Marcel Holtmann |
| Headers | show |
| Series | [v4] bluetooth: hci_qca: Fix qca6390 enable failure after warm reboot | expand |
Hi Zijun, > Warm reboot can not restore qca6390 controller baudrate > to default due to lack of controllable BT_EN pin or power > supply, so fails to download firmware after warm reboot. > > Fixed by sending EDL_SOC_RESET VSC to reset controller > within added device shutdown implementation. > > Signed-off-by: Zijun Hu <zijuhu@codeaurora.org> > --- > drivers/bluetooth/hci_qca.c | 33 +++++++++++++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > > diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c > index e4a6823..8e03bfe 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 }; struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); > + > + 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); And then use bt_dev_err here. > + 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, > }, > }; Regards Marcel
On 5/28/2020 4:19 PM, Marcel Holtmann wrote: > Hi Zijun, > >> Warm reboot can not restore qca6390 controller baudrate >> to default due to lack of controllable BT_EN pin or power >> supply, so fails to download firmware after warm reboot. >> >> Fixed by sending EDL_SOC_RESET VSC to reset controller >> within added device shutdown implementation. >> >> Signed-off-by: Zijun Hu <zijuhu@codeaurora.org> >> --- >> drivers/bluetooth/hci_qca.c | 33 +++++++++++++++++++++++++++++++++ >> 1 file changed, 33 insertions(+) >> >> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c >> index e4a6823..8e03bfe 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 }; > > struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); > no. this dev is serdev_device not hci_dev >> + >> + 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); > > And then use bt_dev_err here. as explained above about dev, bt_dev_err is not a good selection at this serdev_device shudown operation. > >> + 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, >> }, >> }; > > Regards > > Marcel >
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index e4a6823..8e03bfe 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, }, };
Warm reboot can not restore qca6390 controller baudrate to default due to lack of controllable BT_EN pin or power supply, so fails to download firmware after warm reboot. Fixed by sending EDL_SOC_RESET VSC to reset controller within added device shutdown implementation. Signed-off-by: Zijun Hu <zijuhu@codeaurora.org> --- drivers/bluetooth/hci_qca.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+)