Re: [PATCH v2 4/4] Bluetooth: hci_qca: add qcom,product-variant properties

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On 20/11/2024 10:54, Cheng Jiang wrote:
Since different products use the same SoC chip, features cannot
be included in a single patch. Use the qcom,product-variant to
load the appropriate firmware.

The qcom,product-variant provides product line information, which
the driver uses to load firmware from different directories.

If it's not defined in dts, the default firmware will be loaded.

Signed-off-by: Cheng Jiang <quic_chejiang@xxxxxxxxxxx>
---
  drivers/bluetooth/btqca.c   | 142 +++++++++++++++++++++++++++++-------
  drivers/bluetooth/btqca.h   |  11 ++-
  drivers/bluetooth/hci_qca.c |  73 +++++++++---------
  3 files changed, 164 insertions(+), 62 deletions(-)

diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index dfbbac92242a..0845e5a60412 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -700,8 +700,79 @@ static int qca_check_bdaddr(struct hci_dev *hdev, const struct qca_fw_config *co
  	return 0;
  }
-static void qca_generate_hsp_nvm_name(char *fwname, size_t max_size,
-		struct qca_btsoc_version ver, u8 rom_ver, u16 bid)
+
+const char *qca_get_soc_name(enum qca_btsoc_type soc_type)
+{
+	const char *soc_name = "";
+
+	switch (soc_type) {
+	case QCA_QCA2066:
+		soc_name = "QCA2066";
+		break;
+
+	case QCA_QCA6698:
+		soc_name = "QCA6698";
+		break;
+
+	case QCA_WCN3988:
+	case QCA_WCN3990:
+	case QCA_WCN3991:
+	case QCA_WCN3998:
+		soc_name = "WCN399x";
+		break;
+
+	case QCA_WCN6750:
+		soc_name = "WCN6750";
+		break;
+
+	case QCA_WCN6855:
+		soc_name = "WCN6855";
+		break;
+
+	case QCA_WCN7850:
+		soc_name = "WCN7850";
+		break;
+
+	default:
+		soc_name = "ROME/QCA6390";
+	}
+
+	return soc_name;
+}
+EXPORT_SYMBOL_GPL(qca_get_soc_name);
+
+static void qca_get_firmware_path(enum qca_btsoc_type soc_type, char *fw_path,
+		size_t max_size, enum qca_product_type product_type)
+{
+	const char *fw_dir = NULL;
+
+	switch (product_type) {
+	case QCA_MCC:
+		fw_dir = "qca";
+		break;
+	case QCA_CE:
+		fw_dir = "qca/ce";
+		break;
+	case QCA_IOT:
+		fw_dir = "qca/iot";
+		break;
+	case QCA_AUTO:
+		fw_dir = "qca/auto";
+		break;
+	default:
+		fw_dir = "qca";
+		break;
+	}
+
+	if (product_type == QCA_IOT)
+		snprintf(fw_path, max_size, "%s/%s", fw_dir, qca_get_soc_name(soc_type));
+	else
+		snprintf(fw_path, max_size, "%s", fw_dir);
+}
+
+static void qca_generate_hsp_nvm_name(enum qca_btsoc_type soc_type, char *fwname,
+		size_t max_size, const char *fw_path, struct qca_btsoc_version ver, u8 rom_ver,
+		u16 bid)
  {
  	const char *variant;
@@ -712,33 +783,36 @@ static void qca_generate_hsp_nvm_name(char *fwname, size_t max_size,
  		variant = "";
if (bid == 0x0)
-		snprintf(fwname, max_size, "qca/hpnv%02x%s.bin", rom_ver, variant);
+		snprintf(fwname, max_size, "%s/hpnv%02x%s.bin", fw_path, rom_ver, variant);
  	else
-		snprintf(fwname, max_size, "qca/hpnv%02x%s.%x", rom_ver, variant, bid);
+		snprintf(fwname, max_size, "%s/hpnv%02x%s.%x", fw_path, rom_ver, variant, bid);
  }
-static inline void qca_get_nvm_name_generic(struct qca_fw_config *cfg,
+static inline void qca_get_nvm_name_generic(struct qca_fw_config *cfg, const char *fw_path,
  					    const char *stem, u8 rom_ver, u16 bid)
  {
  	if (bid == 0x0)
-		snprintf(cfg->fwname, sizeof(cfg->fwname), "qca/%snv%02x.bin", stem, rom_ver);
+		snprintf(cfg->fwname, sizeof(cfg->fwname),
+			 "%s/%snv%02x.bin", fw_path, stem, rom_ver);
  	else if (bid & 0xff00)
  		snprintf(cfg->fwname, sizeof(cfg->fwname),
-			 "qca/%snv%02x.b%x", stem, rom_ver, bid);
+			 "%s/%snv%02x.b%x", fw_path, stem, rom_ver, bid);
  	else
  		snprintf(cfg->fwname, sizeof(cfg->fwname),
-			 "qca/%snv%02x.b%02x", stem, rom_ver, bid);
+			 "%s/%snv%02x.b%02x", fw_path, stem, rom_ver, bid);
  }
int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  		   enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
-		   const char *firmware_name)
+		   const char *firmware_name, uint32_t product_variant)
  {
  	struct qca_fw_config config = {};
  	int err;
  	u8 rom_ver = 0;
  	u32 soc_ver;
  	u16 boardid = 0;
+	enum qca_product_type product_type;
+	char fw_path[64] = {0};
bt_dev_dbg(hdev, "QCA setup on UART"); @@ -759,6 +833,10 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  	if (soc_type == QCA_WCN6750)
  		qca_send_patch_config_cmd(hdev);
+ /* Get the f/w path based on product variant */
+	product_type = (product_variant >> 16) & 0xff;
+	qca_get_firmware_path(soc_type, fw_path, sizeof(fw_path), product_type);
+
  	/* Download rampatch file */
  	config.type = TLV_TYPE_PATCH;
  	switch (soc_type) {
@@ -766,19 +844,23 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  	case QCA_WCN3991:
  	case QCA_WCN3998:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/crbtfw%02x.tlv", rom_ver);
+			 "%s/crbtfw%02x.tlv", fw_path, rom_ver);

Changing firmware path will break existing platforms, please don't, or add fallbacks.

  		break;
  	case QCA_WCN3988:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/apbtfw%02x.tlv", rom_ver);
+			 "%s/apbtfw%02x.tlv", fw_path, rom_ver);
  		break;
  	case QCA_QCA2066:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/hpbtfw%02x.tlv", rom_ver);
+			 "%s/hpbtfw%02x.tlv", fw_path, rom_ver);
  		break;
  	case QCA_QCA6390:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/htbtfw%02x.tlv", rom_ver);
+			 "%s/htbtfw%02x.tlv", fw_path, rom_ver);
+		break;
+	case QCA_QCA6698:
+		snprintf(config.fwname, sizeof(config.fwname),
+			 "%s/hpbtfw%02x.tlv", fw_path, rom_ver);
  		break;
  	case QCA_WCN6750:
  		/* Choose mbn file by default.If mbn file is not found
@@ -786,19 +868,19 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  		 */
  		config.type = ELF_TYPE_PATCH;
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/msbtfw%02x.mbn", rom_ver);
+			 "%s/msbtfw%02x.mbn", fw_path, rom_ver);
  		break;
  	case QCA_WCN6855:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/hpbtfw%02x.tlv", rom_ver);
+			 "%s/hpbtfw%02x.tlv", fw_path, rom_ver);
  		break;
  	case QCA_WCN7850:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/hmtbtfw%02x.tlv", rom_ver);
+			 "%s/hmtbtfw%02x.tlv", fw_path, rom_ver);
  		break;
  	default:
  		snprintf(config.fwname, sizeof(config.fwname),
-			 "qca/rampatch_%08x.bin", soc_ver);
+			 "%s/rampatch_%08x.bin", fw_path, soc_ver);
  	}
err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
@@ -810,7 +892,8 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  	/* Give the controller some time to get ready to receive the NVM */
  	msleep(10);
- if (soc_type == QCA_QCA2066 || soc_type == QCA_WCN7850)
+	if (soc_type == QCA_QCA2066 || soc_type == QCA_WCN7850 ||
+		soc_type == QCA_QCA6698)
  		qca_read_fw_board_id(hdev, &boardid);
/* Download NVM configuration */
@@ -825,39 +908,40 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  		case QCA_WCN3998:
  			if (le32_to_cpu(ver.soc_id) == QCA_WCN3991_SOC_ID) {
  				snprintf(config.fwname, sizeof(config.fwname),
-					 "qca/crnv%02xu.bin", rom_ver);
+					 "%s/crnv%02xu.bin", fw_path, rom_ver);
  			} else {
  				snprintf(config.fwname, sizeof(config.fwname),
-					 "qca/crnv%02x.bin", rom_ver);
+					 "%s/crnv%02x.bin", fw_path, rom_ver);
  			}
  			break;
  		case QCA_WCN3988:
  			snprintf(config.fwname, sizeof(config.fwname),
-				 "qca/apnv%02x.bin", rom_ver);
+				 "%s/apnv%02x.bin", fw_path, rom_ver);
  			break;
  		case QCA_QCA2066:
-			qca_generate_hsp_nvm_name(config.fwname,
-				sizeof(config.fwname), ver, rom_ver, boardid);
+		case QCA_QCA6698:
+			qca_generate_hsp_nvm_name(soc_type, config.fwname,
+				sizeof(config.fwname), fw_path, ver, rom_ver, boardid);
  			break;
  		case QCA_QCA6390:
  			snprintf(config.fwname, sizeof(config.fwname),
-				 "qca/htnv%02x.bin", rom_ver);
+				 "%s/htnv%02x.bin", fw_path, rom_ver);
  			break;
  		case QCA_WCN6750:
  			snprintf(config.fwname, sizeof(config.fwname),
-				 "qca/msnv%02x.bin", rom_ver);
+				 "%s/msnv%02x.bin", fw_path, rom_ver);
  			break;
  		case QCA_WCN6855:
  			snprintf(config.fwname, sizeof(config.fwname),
-				 "qca/hpnv%02x.bin", rom_ver);
+				 "%s/hpnv%02x.bin", fw_path, rom_ver);
  			break;
  		case QCA_WCN7850:
-			qca_get_nvm_name_generic(&config, "hmt", rom_ver, boardid);
+			qca_get_nvm_name_generic(&config, "hmt", fw_path, rom_ver, boardid);
  			break;
default:
  			snprintf(config.fwname, sizeof(config.fwname),
-				 "qca/nvm_%08x.bin", soc_ver);
+				 "%s/nvm_%08x.bin", fw_path, soc_ver);
  		}
  	}
@@ -871,6 +955,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  	case QCA_WCN3991:
  	case QCA_QCA2066:
  	case QCA_QCA6390:
+	case QCA_QCA6698:
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
@@ -909,6 +994,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		/* get fw build info */
  		err = qca_read_fw_build_info(hdev);
  		if (err < 0)
diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
index bb5207d7a8c7..baa3f979d017 100644
--- a/drivers/bluetooth/btqca.h
+++ b/drivers/bluetooth/btqca.h
@@ -151,21 +151,30 @@ enum qca_btsoc_type {
  	QCA_WCN3991,
  	QCA_QCA2066,
  	QCA_QCA6390,
+	QCA_QCA6698,
  	QCA_WCN6750,
  	QCA_WCN6855,
  	QCA_WCN7850,
  };
+enum qca_product_type {
+	QCA_MCC = 0,
+	QCA_CE,
+	QCA_IOT,
+	QCA_AUTO,
+};
+
  #if IS_ENABLED(CONFIG_BT_QCA)
int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr);
  int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
  		   enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
-		   const char *firmware_name);
+		   const char *firmware_name, uint32_t product_variant);
  int qca_read_soc_version(struct hci_dev *hdev, struct qca_btsoc_version *ver,
  			 enum qca_btsoc_type);
  int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
  int qca_send_pre_shutdown_cmd(struct hci_dev *hdev);
+const char *qca_get_soc_name(enum qca_btsoc_type soc_type);
  #else
static inline int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 37129e6cb0eb..69fec890eb8c 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -227,6 +227,7 @@ struct qca_serdev {
  	struct qca_power *bt_power;
  	u32 init_speed;
  	u32 oper_speed;
+	u32 product_variant;
  	bool bdaddr_property_broken;
  	const char *firmware_name;
  };
@@ -1361,6 +1362,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate)
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		usleep_range(1000, 10000);
  		break;
@@ -1447,6 +1449,7 @@ static int qca_check_speeds(struct hci_uart *hu)
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		if (!qca_get_speed(hu, QCA_INIT_SPEED) &&
  		    !qca_get_speed(hu, QCA_OPER_SPEED))
  			return -EINVAL;
@@ -1489,6 +1492,7 @@ static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type)
  		case QCA_WCN6750:
  		case QCA_WCN6855:
  		case QCA_WCN7850:
+		case QCA_QCA6698:
  			hci_uart_set_flow_control(hu, true);
  			break;
@@ -1523,6 +1527,7 @@ static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type)
  		case QCA_WCN6750:
  		case QCA_WCN6855:
  		case QCA_WCN7850:
+		case QCA_QCA6698:
  			hci_uart_set_flow_control(hu, false);
  			break;
@@ -1803,6 +1808,7 @@ static int qca_power_on(struct hci_dev *hdev)
  	case QCA_WCN6855:
  	case QCA_WCN7850:
  	case QCA_QCA6390:
+	case QCA_QCA6698:
  		ret = qca_regulator_init(hu);
  		break;
@@ -1858,7 +1864,6 @@ static int qca_setup(struct hci_uart *hu)
  	int ret;
  	struct qca_btsoc_version ver;
  	struct qca_serdev *qcadev;
-	const char *soc_name;
ret = qca_check_speeds(hu);
  	if (ret)
@@ -1873,34 +1878,7 @@ static int qca_setup(struct hci_uart *hu)
  	 */
  	set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
- switch (soc_type) {
-	case QCA_QCA2066:
-		soc_name = "qca2066";
-		break;
-
-	case QCA_WCN3988:
-	case QCA_WCN3990:
-	case QCA_WCN3991:
-	case QCA_WCN3998:
-		soc_name = "wcn399x";
-		break;
-
-	case QCA_WCN6750:
-		soc_name = "wcn6750";
-		break;
-
-	case QCA_WCN6855:
-		soc_name = "wcn6855";
-		break;
-
-	case QCA_WCN7850:
-		soc_name = "wcn7850";
-		break;
-
-	default:
-		soc_name = "ROME/QCA6390";
-	}
-	bt_dev_info(hdev, "setting up %s", soc_name);
+	bt_dev_info(hdev, "setting up %s", qca_get_soc_name(soc_type));

Move this into a new function in a separate patch

qca->memdump_state = QCA_MEMDUMP_IDLE; @@ -1919,6 +1897,7 @@ static int qca_setup(struct hci_uart *hu)
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		qcadev = serdev_device_get_drvdata(hu->serdev);
  		if (qcadev->bdaddr_property_broken)
  			set_bit(HCI_QUIRK_BDADDR_PROPERTY_BROKEN, &hdev->quirks);
@@ -1952,6 +1931,7 @@ static int qca_setup(struct hci_uart *hu)
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		break;
default:
@@ -1963,7 +1943,7 @@ static int qca_setup(struct hci_uart *hu)
/* Setup patch / NVM configurations */
  	ret = qca_uart_setup(hdev, qca_baudrate, soc_type, ver,
-			firmware_name);
+			firmware_name, qcadev->product_variant);

Add product variant support separately from adding QCA6698

  	if (!ret) {
  		clear_bit(QCA_IBS_DISABLED, &qca->flags);
  		qca_debugfs_init(hdev);
@@ -2089,6 +2069,20 @@ static const struct qca_device_data qca_soc_data_qca6390 __maybe_unused = {
  	.num_vregs = 0,
  };
+static const struct qca_device_data qca_soc_data_qca6698 __maybe_unused = {
+	.soc_type = QCA_QCA6698,
+	.vregs = (struct qca_vreg []) {
+		{ "vddio", 5000 },
+		{ "vddbtcxmx", 126000 },
+		{ "vddrfacmn", 12500 },
+		{ "vddrfa0p8", 102000 },
+		{ "vddrfa1p7", 302000 },
+		{ "vddrfa1p2", 257000 },
+	},
+	.num_vregs = 6,
+	.capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES,
+};
+
  static const struct qca_device_data qca_soc_data_wcn6750 __maybe_unused = {
  	.soc_type = QCA_WCN6750,
  	.vregs = (struct qca_vreg []) {
@@ -2165,7 +2159,7 @@ static void qca_power_shutdown(struct hci_uart *hu)
  		pwrseq_power_off(power->pwrseq);
  		set_bit(QCA_BT_OFF, &qca->flags);
  		return;
-        }
+	}

This is cleanup

switch (soc_type) {
  	case QCA_WCN3988:
@@ -2179,6 +2173,7 @@ static void qca_power_shutdown(struct hci_uart *hu)
case QCA_WCN6750:
  	case QCA_WCN6855:
+	case QCA_QCA6698:
  		gpiod_set_value_cansleep(qcadev->bt_en, 0);
  		msleep(100);
  		qca_regulator_disable(qcadev);
@@ -2313,6 +2308,12 @@ static int qca_serdev_probe(struct serdev_device *serdev)
  					 &qcadev->firmware_name);
  	device_property_read_u32(&serdev->dev, "max-speed",
  				 &qcadev->oper_speed);
+	device_property_read_u32(&serdev->dev, "qcom,product-variant",
+				 &qcadev->product_variant);
+
+	if (qcadev->product_variant != 0)
+		BT_INFO("QC Product Variant: 0x%08x", qcadev->product_variant);
+
  	if (!qcadev->oper_speed)
  		BT_DBG("UART will pick default operating speed");
@@ -2333,6 +2334,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
  	case QCA_WCN6855:
  	case QCA_WCN7850:
  	case QCA_QCA6390:
+	case QCA_QCA6698:
  		qcadev->bt_power = devm_kzalloc(&serdev->dev,
  						sizeof(struct qca_power),
  						GFP_KERNEL);
@@ -2346,6 +2348,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
  	switch (qcadev->btsoc_type) {
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		if (!device_property_present(&serdev->dev, "enable-gpios")) {
  			/*
  			 * Backward compatibility with old DT sources. If the
@@ -2380,7 +2383,8 @@ static int qca_serdev_probe(struct serdev_device *serdev)
  					       GPIOD_OUT_LOW);
  		if (IS_ERR(qcadev->bt_en) &&
  		    (data->soc_type == QCA_WCN6750 ||
-		     data->soc_type == QCA_WCN6855)) {
+		     data->soc_type == QCA_WCN6855 ||
+		     data->soc_type == QCA_QCA6698)) {
  			dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n");
  			return PTR_ERR(qcadev->bt_en);
  		}
@@ -2393,7 +2397,8 @@ static int qca_serdev_probe(struct serdev_device *serdev)
  		if (IS_ERR(qcadev->sw_ctrl) &&
  		    (data->soc_type == QCA_WCN6750 ||
  		     data->soc_type == QCA_WCN6855 ||
-		     data->soc_type == QCA_WCN7850)) {
+		     data->soc_type == QCA_WCN7850 ||
+		     data->soc_type == QCA_QCA6698)) {
  			dev_err(&serdev->dev, "failed to acquire SW_CTRL gpio\n");
  			return PTR_ERR(qcadev->sw_ctrl);
  		}
@@ -2475,6 +2480,7 @@ static void qca_serdev_remove(struct serdev_device *serdev)
  	case QCA_WCN6750:
  	case QCA_WCN6855:
  	case QCA_WCN7850:
+	case QCA_QCA6698:
  		if (power->vregs_on)
  			qca_power_shutdown(&qcadev->serdev_hu);
  		break;
@@ -2669,6 +2675,7 @@ static const struct of_device_id qca_bluetooth_of_match[] = {
  	{ .compatible = "qcom,qca2066-bt", .data = &qca_soc_data_qca2066},
  	{ .compatible = "qcom,qca6174-bt" },
  	{ .compatible = "qcom,qca6390-bt", .data = &qca_soc_data_qca6390},
+	{ .compatible = "qcom,qca6698-bt", .data = &qca_soc_data_qca6698},
  	{ .compatible = "qcom,qca9377-bt" },
  	{ .compatible = "qcom,wcn3988-bt", .data = &qca_soc_data_wcn3988},
  	{ .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990},

This patch is too long anf has multiple different changes merged together,
please split into multiple small pieces that can be reviewed easier,

Thanks,
Neil




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