static int nokia_bluetooth_serdev_probe(struct serdev_device *serdev)
{
struct device *dev = &serdev->dev;
struct nokia_bt_dev *btdev;
struct clk *sysclk;
int err = 0;
btdev = devm_kzalloc(dev, sizeof(*btdev), GFP_KERNEL);
if (!btdev)
return -ENOMEM;
btdev->hu.serdev = btdev->serdev = serdev;
serdev_device_set_drvdata(serdev, btdev);
btdev->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(btdev->reset)) {
err = PTR_ERR(btdev->reset);
dev_err(dev, "could not get reset gpio: %d", err);
return err;
}
btdev->wakeup_host = devm_gpiod_get(dev, "host-wakeup", GPIOD_IN);
if (IS_ERR(btdev->wakeup_host)) {
err = PTR_ERR(btdev->wakeup_host);
dev_err(dev, "could not get host wakeup gpio: %d", err);
return err;
}
btdev->wake_irq = gpiod_to_irq(btdev->wakeup_host);
err = devm_request_threaded_irq(dev, btdev->wake_irq, NULL,
wakeup_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"wakeup", btdev);
if (err) {
dev_err(dev, "could request wakeup irq: %d", err);
return err;
}
btdev->wakeup_bt = devm_gpiod_get(dev, "bluetooth-wakeup",
GPIOD_OUT_LOW);
if (IS_ERR(btdev->wakeup_bt)) {
err = PTR_ERR(btdev->wakeup_bt);
dev_err(dev, "could not get BT wakeup gpio: %d", err);
return err;
}
sysclk = devm_clk_get(dev, "sysclk");
if (IS_ERR(sysclk)) {
err = PTR_ERR(sysclk);
dev_err(dev, "could not get sysclk: %d", err);
return err;
}
clk_prepare_enable(sysclk);
btdev->sysclk_speed = clk_get_rate(sysclk);
clk_disable_unprepare(sysclk);
skb_queue_head_init(&btdev->txq);
btdev->hu.priv = btdev;
btdev->hu.alignment = 2; /* Nokia H4+ is word aligned */
err = hci_uart_register_device(&btdev->hu, &nokia_proto);
if (err) {
dev_err(dev, "could not register bluetooth uart: %d", err);
return err;
}
return 0;
}
static int qca_serdev_probe(struct serdev_device *serdev)
{
struct qca_serdev *qcadev;
const struct qca_vreg_data *data;
int err;
qcadev = devm_kzalloc(&serdev->dev, sizeof(*qcadev), GFP_KERNEL);
if (!qcadev)
return -ENOMEM;
qcadev->serdev_hu.serdev = serdev;
data = of_device_get_match_data(&serdev->dev);
serdev_device_set_drvdata(serdev, qcadev);
if (data && data->soc_type == QCA_WCN3990) {
qcadev->btsoc_type = QCA_WCN3990;
qcadev->bt_power = devm_kzalloc(&serdev->dev,
sizeof(struct qca_power),
GFP_KERNEL);
if (!qcadev->bt_power)
return -ENOMEM;
qcadev->bt_power->dev = &serdev->dev;
qcadev->bt_power->vreg_data = data;
err = qca_init_regulators(qcadev->bt_power, data->vregs,
data->num_vregs);
if (err) {
BT_ERR("Failed to init regulators:%d", err);
goto out;
}
qcadev->bt_power->vregs_on = false;
device_property_read_u32(&serdev->dev, "max-speed",
&qcadev->oper_speed);
if (!qcadev->oper_speed)
BT_DBG("UART will pick default operating speed");
err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
if (err) {
BT_ERR("wcn3990 serdev registration failed");
goto out;
}
} else {
qcadev->btsoc_type = QCA_ROME;
qcadev->bt_en = devm_gpiod_get(&serdev->dev, "enable",
GPIOD_OUT_LOW);
if (IS_ERR(qcadev->bt_en)) {
dev_err(&serdev->dev, "failed to acquire enable gpio\n");
return PTR_ERR(qcadev->bt_en);
}
qcadev->susclk = devm_clk_get(&serdev->dev, NULL);
if (IS_ERR(qcadev->susclk)) {
dev_err(&serdev->dev, "failed to acquire clk\n");
return PTR_ERR(qcadev->susclk);
}
err = clk_set_rate(qcadev->susclk, SUSCLK_RATE_32KHZ);
if (err)
return err;
err = clk_prepare_enable(qcadev->susclk);
if (err)
return err;
err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
if (err)
clk_disable_unprepare(qcadev->susclk);
}
out: return err;
}
