[PATCH v2 09/10] Bluetooth: hci_qca: Add support for WCN7850 PCIe M.2 card

[Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>]

From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>

The WCN7850 PCIe M.2 card connected to the UART controller exposes the
'WCN7850' serdev device and is controlled using the pwrseq framework.

Hence, add support for it in the driver. It reuses the existing
'qca_soc_data_wcn7850' driver data.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
---
 drivers/bluetooth/hci_qca.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 4cff4d9be313..35d08b455e40 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -26,6 +26,7 @@
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_graph.h>
 #include <linux/acpi.h>
 #include <linux/platform_device.h>
 #include <linux/pwrseq/consumer.h>
@@ -2344,6 +2345,9 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 
 	qcadev->serdev_hu.serdev = serdev;
 	data = device_get_match_data(&serdev->dev);
+	if (!data && serdev->id)
+		data = (const struct qca_device_data *) serdev->id->driver_data;
+
 	serdev_device_set_drvdata(serdev, qcadev);
 	device_property_read_string_array(&serdev->dev, "firmware-name",
 					 qcadev->firmware_name, ARRAY_SIZE(qcadev->firmware_name));
@@ -2384,6 +2388,14 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 	case QCA_WCN6855:
 	case QCA_WCN7850:
 	case QCA_WCN6750:
+		if (of_graph_is_present(dev_of_node(&serdev->ctrl->dev))) {
+			qcadev->bt_power->pwrseq = devm_pwrseq_get(&serdev->ctrl->dev,
+								   "uart");
+			if (IS_ERR(qcadev->bt_power->pwrseq))
+				return PTR_ERR(qcadev->bt_power->pwrseq);
+			break;
+		}
+
 		if (!device_property_present(&serdev->dev, "enable-gpios")) {
 			/*
 			 * Backward compatibility with old DT sources. If the
@@ -2740,6 +2752,12 @@ static const struct acpi_device_id qca_bluetooth_acpi_match[] = {
 MODULE_DEVICE_TABLE(acpi, qca_bluetooth_acpi_match);
 #endif
 
+static const struct serdev_device_id qca_bluetooth_serdev_match[] = {
+	{ "WCN7850", (kernel_ulong_t)&qca_soc_data_wcn7850 },
+	{ },
+};
+MODULE_DEVICE_TABLE(serdev, qca_bluetooth_serdev_match);
+
 #ifdef CONFIG_DEV_COREDUMP
 static void hciqca_coredump(struct device *dev)
 {
@@ -2756,6 +2774,7 @@ static void hciqca_coredump(struct device *dev)
 static struct serdev_device_driver qca_serdev_driver = {
 	.probe = qca_serdev_probe,
 	.remove = qca_serdev_remove,
+	.id_table = qca_bluetooth_serdev_match,
 	.driver = {
 		.name = "hci_uart_qca",
 		.of_match_table = of_match_ptr(qca_bluetooth_of_match),

-- 
2.48.1