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From:   Harish Bandi <c-hbandi@codeaurora.org>
To:     marcel@holtmann.org, johan.hedberg@gmail.com
Cc:     mka@chromium.org, linux-kernel@vger.kernel.org,
        linux-bluetooth@vger.kernel.org, hemantg@codeaurora.org,
        linux-arm-msm@vger.kernel.org, bgodavar@codeaurora.org,
        anubhavg@codeaurora.org, devicetree@vger.kernel.org,
        mark.rutland@arm.com, robh+dt@kernel.org,
        Harish Bandi <c-hbandi@codeaurora.org>
Subject: [PATCH v4 1/2] Bluetooth: hci_qca: Added support for WCN3998
Date:   Mon, 25 Mar 2019 17:06:39 +0530
Message-Id: <1553513800-27611-2-git-send-email-c-hbandi@codeaurora.org>
In-Reply-To: <1553513800-27611-1-git-send-email-c-hbandi@codeaurora.org>
References: <1553513800-27611-1-git-send-email-c-hbandi@codeaurora.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Added new compatible for WCN3998 and corresponding voltage
and current values to WCN3998 compatible.
Changed driver code to support WCN3998

Signed-off-by: Harish Bandi <c-hbandi@codeaurora.org>
---
Changes in V4:
- Added is_qca_soc_type_wcn399x_family helper function 
- to get the soc type is wcn399x or not.
---
 drivers/bluetooth/btqca.c   |  4 ++--
 drivers/bluetooth/btqca.h   |  3 ++-
 drivers/bluetooth/hci_qca.c | 48 ++++++++++++++++++++++++++++++++-------------
 3 files changed, 38 insertions(+), 17 deletions(-)

diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index 6122685..70cab13 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -344,7 +344,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 
 	/* Download rampatch file */
 	config.type = TLV_TYPE_PATCH;
-	if (soc_type == QCA_WCN3990) {
+	if (soc_type >= QCA_WCN3990) {
 		/* Firmware files to download are based on ROM version.
 		 * ROM version is derived from last two bytes of soc_ver.
 		 */
@@ -365,7 +365,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
 
 	/* Download NVM configuration */
 	config.type = TLV_TYPE_NVM;
-	if (soc_type == QCA_WCN3990)
+	if (soc_type >= QCA_WCN3990)
 		snprintf(config.fwname, sizeof(config.fwname),
 			 "qca/crnv%02x.bin", rom_ver);
 	else
diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
index c72c56e..bd6a902 100644
--- a/drivers/bluetooth/btqca.h
+++ b/drivers/bluetooth/btqca.h
@@ -132,7 +132,8 @@ enum qca_btsoc_type {
 	QCA_INVALID = -1,
 	QCA_AR3002,
 	QCA_ROME,
-	QCA_WCN3990
+	QCA_WCN3990,
+	QCA_WCN3998,
 };
 
 #if IS_ENABLED(CONFIG_BT_QCA)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 4ea995d..e238c2b 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -189,6 +189,14 @@ static enum qca_btsoc_type qca_soc_type(struct hci_uart *hu)
 	return soc_type;
 }
 
+bool is_qca_soc_type_wcn399x_family(enum qca_btsoc_type soc_type)
+{
+	if ((soc_type  == QCA_WCN3990) || (soc_type  == QCA_WCN3998))
+		return true;
+
+	return false;
+}
+
 static void __serial_clock_on(struct tty_struct *tty)
 {
 	/* TODO: Some chipset requires to enable UART clock on client
@@ -521,7 +529,7 @@ static int qca_open(struct hci_uart *hu)
 	if (hu->serdev) {
 
 		qcadev = serdev_device_get_drvdata(hu->serdev);
-		if (qcadev->btsoc_type != QCA_WCN3990) {
+		if (!is_qca_soc_type_wcn399x_family(qcadev->btsoc_type)) {
 			gpiod_set_value_cansleep(qcadev->bt_en, 1);
 		} else {
 			hu->init_speed = qcadev->init_speed;
@@ -627,7 +635,7 @@ static int qca_close(struct hci_uart *hu)
 
 	if (hu->serdev) {
 		qcadev = serdev_device_get_drvdata(hu->serdev);
-		if (qcadev->btsoc_type == QCA_WCN3990)
+		if (is_qca_soc_type_wcn399x_family(qcadev->btsoc_type))
 			qca_power_shutdown(hu);
 		else
 			gpiod_set_value_cansleep(qcadev->bt_en, 0);
@@ -1008,7 +1016,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate)
 		      msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS));
 
 	/* Give the controller time to process the request */
-	if (qca_soc_type(hu) == QCA_WCN3990)
+	if (is_qca_soc_type_wcn399x_family(qca_soc_type(hu)))
 		msleep(10);
 	else
 		msleep(300);
@@ -1084,7 +1092,7 @@ static unsigned int qca_get_speed(struct hci_uart *hu,
 
 static int qca_check_speeds(struct hci_uart *hu)
 {
-	if (qca_soc_type(hu) == QCA_WCN3990) {
+	if (is_qca_soc_type_wcn399x_family(qca_soc_type(hu)) >= QCA_WCN3990) {
 		if (!qca_get_speed(hu, QCA_INIT_SPEED) &&
 		    !qca_get_speed(hu, QCA_OPER_SPEED))
 			return -EINVAL;
@@ -1116,7 +1124,7 @@ static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type)
 		/* Disable flow control for wcn3990 to deassert RTS while
 		 * changing the baudrate of chip and host.
 		 */
-		if (soc_type == QCA_WCN3990)
+		if (is_qca_soc_type_wcn399x_family(soc_type))
 			hci_uart_set_flow_control(hu, true);
 
 		qca_baudrate = qca_get_baudrate_value(speed);
@@ -1128,7 +1136,7 @@ static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type)
 		host_set_baudrate(hu, speed);
 
 error:
-		if (soc_type == QCA_WCN3990)
+		if (is_qca_soc_type_wcn399x_family(soc_type))
 			hci_uart_set_flow_control(hu, false);
 	}
 
@@ -1201,7 +1209,7 @@ static int qca_setup(struct hci_uart *hu)
 	/* Patch downloading has to be done without IBS mode */
 	clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
 
-	if (soc_type == QCA_WCN3990) {
+	if (is_qca_soc_type_wcn399x_family(soc_type)) {
 		bt_dev_info(hdev, "setting up wcn3990");
 
 		/* Enable NON_PERSISTENT_SETUP QUIRK to ensure to execute
@@ -1232,7 +1240,7 @@ static int qca_setup(struct hci_uart *hu)
 		qca_baudrate = qca_get_baudrate_value(speed);
 	}
 
-	if (soc_type != QCA_WCN3990) {
+	if (!is_qca_soc_type_wcn399x_family(soc_type)) {
 		/* Get QCA version information */
 		ret = qca_read_soc_version(hdev, &soc_ver);
 		if (ret)
@@ -1257,7 +1265,7 @@ static int qca_setup(struct hci_uart *hu)
 	}
 
 	/* Setup bdaddr */
-	if (soc_type == QCA_WCN3990)
+	if (is_qca_soc_type_wcn399x_family(soc_type))
 		hu->hdev->set_bdaddr = qca_set_bdaddr;
 	else
 		hu->hdev->set_bdaddr = qca_set_bdaddr_rome;
@@ -1280,7 +1288,7 @@ static int qca_setup(struct hci_uart *hu)
 	.dequeue	= qca_dequeue,
 };
 
-static const struct qca_vreg_data qca_soc_data = {
+static const struct qca_vreg_data qca_soc_data_wcn3990 = {
 	.soc_type = QCA_WCN3990,
 	.vregs = (struct qca_vreg []) {
 		{ "vddio",   1800000, 1900000,  15000  },
@@ -1291,6 +1299,17 @@ static int qca_setup(struct hci_uart *hu)
 	.num_vregs = 4,
 };
 
+static const struct qca_vreg_data qca_soc_data_wcn3998 = {
+	.soc_type = QCA_WCN3998,
+	.vregs = (struct qca_vreg []) {
+		{ "vddio",   1800000, 1900000,  10000  },
+		{ "vddxo",   1800000, 1900000,  80000  },
+		{ "vddrf",   1300000, 1352000,  300000 },
+		{ "vddch0",  3300000, 3300000,  450000 },
+	},
+	.num_vregs = 4,
+};
+
 static void qca_power_shutdown(struct hci_uart *hu)
 {
 	struct qca_data *qca = hu->priv;
@@ -1424,8 +1443,8 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 	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;
+	if (data && is_qca_soc_type_wcn399x_family(data->soc_type)) {
+		qcadev->btsoc_type = data->soc_type;
 		qcadev->bt_power = devm_kzalloc(&serdev->dev,
 						sizeof(struct qca_power),
 						GFP_KERNEL);
@@ -1489,7 +1508,7 @@ static void qca_serdev_remove(struct serdev_device *serdev)
 {
 	struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev);
 
-	if (qcadev->btsoc_type == QCA_WCN3990)
+	if (qcadev->btsoc_type >= QCA_WCN3990)
 		qca_power_shutdown(&qcadev->serdev_hu);
 	else
 		clk_disable_unprepare(qcadev->susclk);
@@ -1499,7 +1518,8 @@ static void qca_serdev_remove(struct serdev_device *serdev)
 
 static const struct of_device_id qca_bluetooth_of_match[] = {
 	{ .compatible = "qcom,qca6174-bt" },
-	{ .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data},
+	{ .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990},
+	{ .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, qca_bluetooth_of_match);
-- 
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