Bluetooth: qca: enable pwrseq support for WCN39xx devices

The WCN39xx family of WiFi/BT chips incorporates a simple PMU, spreading
voltages over internal rails. Implement support for using powersequencer
for this family of QCA devices in addition to using regulators.

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Author: lumag

drivers/bluetooth/hci_qca.c

@@ -2241,6 +2241,18 @@ static void qca_power_off(struct hci_uart *hu)
 	qcadev = serdev_device_get_drvdata(hu->serdev);
 	power = qcadev->bt_power;
 
+	switch (soc_type) {
+	case QCA_WCN3988:
+	case QCA_WCN3990:
+	case QCA_WCN3991:
+	case QCA_WCN3998:
+		host_set_baudrate(hu, 2400);
+		qca_send_power_pulse(hu, false);
+		break;
+	default:
+		break;
+	}
+
 	if (power && power->pwrseq) {
 		pwrseq_power_off(power->pwrseq);
 		set_bit(QCA_BT_OFF, &qca->flags);
@@ -2252,8 +2264,6 @@ static void qca_power_off(struct hci_uart *hu)
 	case QCA_WCN3990:
 	case QCA_WCN3991:
 	case QCA_WCN3998:
-		host_set_baudrate(hu, 2400);
-		qca_send_power_pulse(hu, false);
 		qca_regulator_disable(qcadev);
 		break;
 
@@ -2425,6 +2435,11 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 	}
 
 	switch (qcadev->btsoc_type) {
+	case QCA_WCN3950:
+	case QCA_WCN3988:
+	case QCA_WCN3990:
+	case QCA_WCN3991:
+	case QCA_WCN3998:
 	case QCA_WCN6750:
 	case QCA_WCN6855:
 	case QCA_WCN7850:
@@ -2449,12 +2464,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 			else
 				break;
 		}
-		fallthrough;
-	case QCA_WCN3950:
-	case QCA_WCN3988:
-	case QCA_WCN3990:
-	case QCA_WCN3991:
-	case QCA_WCN3998:
+
 		qcadev->bt_power->dev = &serdev->dev;
 		err = qca_init_regulators(qcadev->bt_power, data->vregs,
 					  data->num_vregs);