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Bluetooth: hci_qca: Fix qca6390 enable failure after warm reboot

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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>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Zijun Hu 2020-05-29 21:56:57 +08:00 committed by Marcel Holtmann
parent e6da0edc24
commit 7e7bbddd02
1 changed files with 33 additions and 0 deletions
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33
drivers/bluetooth/hci_qca.c
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@ -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 serdev_device *serdev = to_serdev_device(dev);
@ -2102,6 +2134,7 @@ 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,
},
};