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SubjectRe: [PATCH v2 1/3] Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6750
Hi Matthias,

On 2021-04-21 02:23, Matthias Kaehlcke wrote:
> On Tue, Apr 20, 2021 at 09:56:48PM +0530, Venkata Lakshmi Narayana
> Gubba wrote:
>> Added regulators,GPIOs and changes required to power on/off wcn6750.
>> Added support for firmware download for wcn6750.
>>
>> Changes done in detail:
>> 1. Added regulators and corresponding current values.
>> 2. Added sw_ctrl GPIO pin which is output from BT SoC and indicates
>> status of clock supply to BT SoC.
>> 3. Added inline function to check if the SoC type is wcn399x or
>> wcn6750.
>> 4. Modified the function qca_wcn3990_init() to support wcn6750 and
>> renamed it to qca_regulator_init().
>> 5. Added BT_ON and BT_OFF macros.
>> 6. Added support to download mbn type firmware image as wcn6750
>> supports
>> mbn type image.
>> 7. If mbn type image is not present then we will check for tlv type
>> image.
>> 8. Moved extracting rom version info to common place as this code is
>> common in all if else ladder in qca_uart_setup.
>>
>> Signed-off-by: Venkata Lakshmi Narayana Gubba
>> <gubbaven@codeaurora.org>
>> ---
>> drivers/bluetooth/btqca.c | 88
>> ++++++++++++++++++++++++++----------
>> drivers/bluetooth/btqca.h | 15 ++++++-
>> drivers/bluetooth/hci_qca.c | 106
>> ++++++++++++++++++++++++++++++++++----------
>> 3 files changed, 161 insertions(+), 48 deletions(-)
>>
>> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
>> index 25114f0..eec391a 100644
>> --- a/drivers/bluetooth/btqca.c
>> +++ b/drivers/bluetooth/btqca.c
>> @@ -182,7 +182,8 @@ int qca_send_pre_shutdown_cmd(struct hci_dev
>> *hdev)
>> }
>> EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
>>
>> -static void qca_tlv_check_data(struct qca_fw_config *config,
>> +static void qca_tlv_check_data(struct hci_dev *hdev,
>> + struct qca_fw_config *config,
>> const struct firmware *fw, enum qca_btsoc_type soc_type)
>> {
>> const u8 *data;
>> @@ -194,19 +195,21 @@ static void qca_tlv_check_data(struct
>> qca_fw_config *config,
>> struct tlv_type_nvm *tlv_nvm;
>> uint8_t nvm_baud_rate = config->user_baud_rate;
>>
>> - tlv = (struct tlv_type_hdr *)fw->data;
>> -
>> - type_len = le32_to_cpu(tlv->type_len);
>> - length = (type_len >> 8) & 0x00ffffff;
>> -
>> - BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
>> - BT_DBG("Length\t\t : %d bytes", length);
>> -
>> config->dnld_mode = QCA_SKIP_EVT_NONE;
>> config->dnld_type = QCA_SKIP_EVT_NONE;
>>
>> switch (config->type) {
>> + case ELF_TYPE_PATCH:
>> + config->dnld_mode = QCA_SKIP_EVT_VSE_CC;
>> + config->dnld_type = QCA_SKIP_EVT_VSE_CC;
>> +
>> + bt_dev_dbg(hdev, "File Class : 0x%x", fw->data[4]);
>> + bt_dev_dbg(hdev, "Data Encoding : 0x%x", fw->data[5]);
>> + bt_dev_dbg(hdev, "File version : 0x%x", fw->data[6]);
>> + break;
>> case TLV_TYPE_PATCH:
>> + tlv = (struct tlv_type_hdr *)fw->data;
>> + type_len = le32_to_cpu(tlv->type_len);
>> tlv_patch = (struct tlv_type_patch *)tlv->data;
>>
>> /* For Rome version 1.1 to 3.1, all segment commands
>> @@ -218,6 +221,7 @@ static void qca_tlv_check_data(struct
>> qca_fw_config *config,
>> config->dnld_mode = tlv_patch->download_mode;
>> config->dnld_type = config->dnld_mode;
>>
>> + BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
>> BT_DBG("Total Length : %d bytes",
>> le32_to_cpu(tlv_patch->total_size));
>> BT_DBG("Patch Data Length : %d bytes",
>> @@ -243,6 +247,14 @@ static void qca_tlv_check_data(struct
>> qca_fw_config *config,
>> break;
>>
>> case TLV_TYPE_NVM:
>> + tlv = (struct tlv_type_hdr *)fw->data;
>> +
>> + type_len = le32_to_cpu(tlv->type_len);
>> + length = (type_len >> 8) & 0x00ffffff;
>> +
>> + BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
>> + BT_DBG("Length\t\t : %d bytes", length);
>> +
>
> To keep the wcn6750 shorther you could consider to have a separate
> patch
> for the ELF type and the additional logging.
>
[Venkata]:
Sure, I will send as a seperate patch in next patchset.
>> idx = 0;
>> data = tlv->data;
>> while (idx < length) {
>> @@ -387,7 +399,8 @@ static int qca_inject_cmd_complete_event(struct
>> hci_dev *hdev)
>>
>> static int qca_download_firmware(struct hci_dev *hdev,
>> struct qca_fw_config *config,
>> - enum qca_btsoc_type soc_type)
>> + enum qca_btsoc_type soc_type,
>> + u8 rom_ver)
>> {
>> const struct firmware *fw;
>> const u8 *segment;
>> @@ -397,12 +410,29 @@ static int qca_download_firmware(struct hci_dev
>> *hdev,
>>
>> ret = request_firmware(&fw, config->fwname, &hdev->dev);
>> if (ret) {
>> - bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
>> - config->fwname, ret);
>> - return ret;
>> + /* For WCN6750, if mbn file is not present then check for
>> + * tlv file.
>> + */
>> + if (soc_type == QCA_WCN6750 && config->type == ELF_TYPE_PATCH) {
>> + bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
>> + config->fwname, ret);
>> + config->type = TLV_TYPE_PATCH;
>> + snprintf(config->fwname, sizeof(config->fwname),
>> + "qca/msbtfw%02x.tlv", rom_ver);
>> + ret = request_firmware(&fw, config->fwname, &hdev->dev);
>> + if (ret) {
>> + bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
>> + config->fwname, ret);
>> + return ret;
>> + }
>> + } else {
>> + bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
>> + config->fwname, ret);
>> + return ret;
>> + }
>> }
>>
>> - qca_tlv_check_data(config, fw, soc_type);
>> + qca_tlv_check_data(hdev, config, fw, soc_type);
>>
>> segment = fw->data;
>> remain = fw->size;
>> @@ -502,27 +532,33 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t
>> baudrate,
>>
>> config.user_baud_rate = baudrate;
>>
>> + /* Firmware files to download are based on ROM version.
>> + * ROM version is derived from last two bytes of soc_ver.
>> + */
>> + rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
>> + (soc_ver & 0x0000000f);
>> +
>
> This refactoring could also be done in a separate patch.
>
[Venkata]:
Sure.I will send as a seperate patch in next patchset.
>> /* Download rampatch file */
>> config.type = TLV_TYPE_PATCH;
>> if (qca_is_wcn399x(soc_type)) {
>> - /* Firmware files to download are based on ROM version.
>> - * ROM version is derived from last two bytes of soc_ver.
>> - */
>> - rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
>> - (soc_ver & 0x0000000f);
>> snprintf(config.fwname, sizeof(config.fwname),
>> "qca/crbtfw%02x.tlv", rom_ver);
>> } else if (soc_type == QCA_QCA6390) {
>> - rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
>> - (soc_ver & 0x0000000f);
>> snprintf(config.fwname, sizeof(config.fwname),
>> "qca/htbtfw%02x.tlv", rom_ver);
>> + } else if (soc_type == QCA_WCN6750) {
>> + /* Choose mbn file by default.If mbn file is not found
>> + * then choose tlv file
>> + */
>> + config.type = ELF_TYPE_PATCH;
>> + snprintf(config.fwname, sizeof(config.fwname),
>> + "qca/msbtfw%02x.mbn", rom_ver);
>> } else {
>> snprintf(config.fwname, sizeof(config.fwname),
>> "qca/rampatch_%08x.bin", soc_ver);
>> }
>>
>> - err = qca_download_firmware(hdev, &config, soc_type);
>> + err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
>> if (err < 0) {
>> bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
>> return err;
>> @@ -548,11 +584,14 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t
>> baudrate,
>> else if (soc_type == QCA_QCA6390)
>> snprintf(config.fwname, sizeof(config.fwname),
>> "qca/htnv%02x.bin", rom_ver);
>> + else if (soc_type == QCA_WCN6750)
>> + snprintf(config.fwname, sizeof(config.fwname),
>> + "qca/msnv%02x.bin", rom_ver);
>> else
>> snprintf(config.fwname, sizeof(config.fwname),
>> "qca/nvm_%08x.bin", soc_ver);
>>
>> - err = qca_download_firmware(hdev, &config, soc_type);
>> + err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
>> if (err < 0) {
>> bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
>> return err;
>> @@ -564,13 +603,14 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t
>> baudrate,
>> return err;
>> }
>>
>> - /* WCN399x supports the Microsoft vendor extension with 0xFD70 as
>> the
>> + /* WCN399x and WCN6750 supports the Microsoft vendor extension with
>> 0xFD70 as the
>> * VsMsftOpCode.
>> */
>> switch (soc_type) {
>> case QCA_WCN3990:
>> case QCA_WCN3991:
>> case QCA_WCN3998:
>> + case QCA_WCN6750:
>> hci_set_msft_opcode(hdev, 0xFD70);
>> break;
>> default:
>> diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
>> index b19add7..3057bf8 100644
>> --- a/drivers/bluetooth/btqca.h
>> +++ b/drivers/bluetooth/btqca.h
>> @@ -80,7 +80,8 @@ enum qca_tlv_dnld_mode {
>>
>> enum qca_tlv_type {
>> TLV_TYPE_PATCH = 1,
>> - TLV_TYPE_NVM
>> + TLV_TYPE_NVM,
>> + ELF_TYPE_PATCH
>> };
>>
>> struct qca_fw_config {
>> @@ -143,6 +144,7 @@ enum qca_btsoc_type {
>> QCA_WCN3998,
>> QCA_WCN3991,
>> QCA_QCA6390,
>> + QCA_WCN6750
>> };
>>
>> #if IS_ENABLED(CONFIG_BT_QCA)
>> @@ -160,6 +162,12 @@ static inline bool qca_is_wcn399x(enum
>> qca_btsoc_type soc_type)
>> return soc_type == QCA_WCN3990 || soc_type == QCA_WCN3991 ||
>> soc_type == QCA_WCN3998;
>> }
>> +static inline bool qca_is_wcn399x_wcn6750(enum qca_btsoc_type
>> soc_type)
>> +{
>> + return soc_type == QCA_WCN3990 || soc_type == QCA_WCN3991 ||
>> + soc_type == QCA_WCN3998 || soc_type == QCA_WCN6750;
>> +}
>> +
>
> I anticipate that this would eventually need to be extended to
> 'qca_is_wcn399x_wcn6750_wcn1234',
> 'qca_is_wcn399x_wcn6750_wcn1234_wcn9876',
> which isn't really practical. It might be better to just have
> 'qca_is_wcn399x()'
> and 'qca_is_wcn6750()' (or qca_is_wcn675x() if applicable)
>
> IMO
>
> if (qca_is_wcn399x(type) || qca_is_wcn6750(type))
>
> isn't really worse than
>
> if (qca_is_wcn399x_wcn6750(type))
>
>
> personally I find the formwer even easier to read.
>
[Venkata]:
Sure.I will update in next patchset.
>> #else
>>
>> static inline int qca_set_bdaddr_rome(struct hci_dev *hdev, const
>> bdaddr_t *bdaddr)
>> @@ -192,6 +200,11 @@ static inline bool qca_is_wcn399x(enum
>> qca_btsoc_type soc_type)
>> return false;
>> }
>>
>> +static inline bool qca_is_wcn399x_wcn6750(enum qca_btsoc_type
>> soc_type)
>> +{
>> + return false;
>> +}
>> +
>> static inline int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
>> {
>> return -EOPNOTSUPP;
>> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
>> index 0a00569..0d25ba9 100644
>> --- a/drivers/bluetooth/hci_qca.c
>> +++ b/drivers/bluetooth/hci_qca.c
>> @@ -70,6 +70,10 @@
>> #define QCA_CRASHBYTE_PACKET_LEN 1096
>> #define QCA_MEMDUMP_BYTE 0xFB
>>
>> +/* BT_EN GPIO enable/disable */
>> +#define BT_ON 1
>> +#define BT_OFF 0
>
> These aren't really needed, passing 0 and 1 to gpio_set_value() is
> clear enough.
>
[Venkata]:
I will update in next patch set.
>> +
>> enum qca_flags {
>> QCA_IBS_DISABLED,
>> QCA_DROP_VENDOR_EVENT,
>> @@ -218,6 +222,7 @@ struct qca_power {
>> struct qca_serdev {
>> struct hci_uart serdev_hu;
>> struct gpio_desc *bt_en;
>> + struct gpio_desc *sw_ctrl;
>> struct clk *susclk;
>> enum qca_btsoc_type btsoc_type;
>> struct qca_power *bt_power;
>> @@ -604,7 +609,7 @@ static int qca_open(struct hci_uart *hu)
>> if (hu->serdev) {
>> qcadev = serdev_device_get_drvdata(hu->serdev);
>>
>> - if (qca_is_wcn399x(qcadev->btsoc_type))
>> + if (qca_is_wcn399x_wcn6750(qcadev->btsoc_type))
>> hu->init_speed = qcadev->init_speed;
>>
>> if (qcadev->oper_speed)
>> @@ -1308,7 +1313,7 @@ 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_is_wcn399x(qca_soc_type(hu)))
>> + if (qca_is_wcn399x_wcn6750(qca_soc_type(hu)))
>> usleep_range(1000, 10000);
>> else
>> msleep(300);
>> @@ -1384,7 +1389,7 @@ static unsigned int qca_get_speed(struct
>> hci_uart *hu,
>>
>> static int qca_check_speeds(struct hci_uart *hu)
>> {
>> - if (qca_is_wcn399x(qca_soc_type(hu))) {
>> + if (qca_is_wcn399x_wcn6750(qca_soc_type(hu))) {
>> if (!qca_get_speed(hu, QCA_INIT_SPEED) &&
>> !qca_get_speed(hu, QCA_OPER_SPEED))
>> return -EINVAL;
>> @@ -1417,7 +1422,7 @@ 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 (qca_is_wcn399x(soc_type))
>> + if (qca_is_wcn399x_wcn6750(soc_type))
>> hci_uart_set_flow_control(hu, true);
>>
>> if (soc_type == QCA_WCN3990) {
>> @@ -1434,7 +1439,7 @@ static int qca_set_speed(struct hci_uart *hu,
>> enum qca_speed_type speed_type)
>> host_set_baudrate(hu, speed);
>>
>> error:
>> - if (qca_is_wcn399x(soc_type))
>> + if (qca_is_wcn399x_wcn6750(soc_type))
>> hci_uart_set_flow_control(hu, false);
>>
>> if (soc_type == QCA_WCN3990) {
>> @@ -1585,10 +1590,12 @@ static bool qca_prevent_wake(struct hci_dev
>> *hdev)
>> return !wakeup;
>> }
>>
>> -static int qca_wcn3990_init(struct hci_uart *hu)
>> +static int qca_regulator_init(struct hci_uart *hu)
>> {
>> + enum qca_btsoc_type soc_type = qca_soc_type(hu);
>> struct qca_serdev *qcadev;
>> int ret;
>> + bool sw_ctrl_state;
>>
>> /* Check for vregs status, may be hci down has turned
>> * off the voltage regulator.
>> @@ -1607,16 +1614,31 @@ static int qca_wcn3990_init(struct hci_uart
>> *hu)
>> }
>> }
>>
>> - /* Forcefully enable wcn3990 to enter in to boot mode. */
>> - host_set_baudrate(hu, 2400);
>> - ret = qca_send_power_pulse(hu, false);
>> - if (ret)
>> - return ret;
>> + if (qca_is_wcn399x(soc_type)) {
>> + /* Forcefully enable wcn3990 to enter in to boot mode. */
>
> nit: s/wcn3990/wcn399x/ since you are already touching the code
>
[Venkata]:
I will update in next patchset.
>> + host_set_baudrate(hu, 2400);
>> + ret = qca_send_power_pulse(hu, false);
>> + if (ret)
>> + return ret;
>> + }
>> +
>> + /* For wcn6750 need to enable gpio bt_en */
>
> Does this really only apply to the wcn6750()?
>
> From the code it's evident that the enable pin is togged, I suggest
> to drop the comment.
>
[Venkata] :
Yes, Below code only apply to WCN6750.
>> + if (qcadev->bt_en) {
>> + gpiod_set_value_cansleep(qcadev->bt_en, BT_OFF);
>> + msleep(50);
>> + gpiod_set_value_cansleep(qcadev->bt_en, BT_ON);
>> + msleep(50);
>> + sw_ctrl_state = gpiod_get_value_cansleep(qcadev->sw_ctrl);
>> + bt_dev_dbg(hu->hdev, "SW_CTRL is %d", sw_ctrl_state);
>
> Need to check if 'sw_ctrl' is a valid GPIO?
>
> What exactly is the role of 'SW_CTRL'?
>
[Venkata]:
I will add check if sw_ctrl is a valid GPIO.
sw_ctrl is output from BT SoC to Host.It indicates status of clock
supply to SoC.
>> + }
>>
>> qca_set_speed(hu, QCA_INIT_SPEED);
>> - ret = qca_send_power_pulse(hu, true);
>> - if (ret)
>> - return ret;
>> +
>> + if (qca_is_wcn399x(soc_type)) {
>> + ret = qca_send_power_pulse(hu, true);
>> + if (ret)
>> + return ret;
>> + }
>>
>> /* Now the device is in ready state to communicate with host.
>> * To sync host with device we need to reopen port.
>> @@ -1649,12 +1671,12 @@ static int qca_power_on(struct hci_dev *hdev)
>> if (!hu->serdev)
>> return 0;
>>
>> - if (qca_is_wcn399x(soc_type)) {
>> - ret = qca_wcn3990_init(hu);
>> + if (qca_is_wcn399x_wcn6750(soc_type)) {
>> + ret = qca_regulator_init(hu);
>> } else {
>> qcadev = serdev_device_get_drvdata(hu->serdev);
>> if (qcadev->bt_en) {
>> - gpiod_set_value_cansleep(qcadev->bt_en, 1);
>> + gpiod_set_value_cansleep(qcadev->bt_en, BT_ON);
>> /* Controller needs time to bootup. */
>> msleep(150);
>> }
>> @@ -1689,7 +1711,8 @@ static int qca_setup(struct hci_uart *hu)
>> set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
>>
>> bt_dev_info(hdev, "setting up %s",
>> - qca_is_wcn399x(soc_type) ? "wcn399x" : "ROME/QCA6390");
>> + qca_is_wcn399x(soc_type) ? "wcn399x" :
>> + (soc_type == QCA_WCN6750) ? "wcn6750" : "ROME/QCA6390");
>>
>> qca->memdump_state = QCA_MEMDUMP_IDLE;
>>
>> @@ -1700,7 +1723,7 @@ static int qca_setup(struct hci_uart *hu)
>>
>> clear_bit(QCA_SSR_TRIGGERED, &qca->flags);
>>
>> - if (qca_is_wcn399x(soc_type)) {
>> + if (qca_is_wcn399x_wcn6750(soc_type)) {
>> set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks);
>>
>> ret = qca_read_soc_version(hdev, &ver, soc_type);
>> @@ -1720,7 +1743,7 @@ static int qca_setup(struct hci_uart *hu)
>> qca_baudrate = qca_get_baudrate_value(speed);
>> }
>>
>> - if (!qca_is_wcn399x(soc_type)) {
>> + if (!qca_is_wcn399x_wcn6750(soc_type)) {
>> /* Get QCA version information */
>> ret = qca_read_soc_version(hdev, &ver, soc_type);
>> if (ret)
>> @@ -1828,12 +1851,30 @@ static const struct qca_device_data
>> qca_soc_data_qca6390 = {
>> .num_vregs = 0,
>> };
>>
>> +static const struct qca_device_data qca_soc_data_wcn6750 = {
>> + .soc_type = QCA_WCN6750,
>> + .vregs = (struct qca_vreg []) {
>> + { "vddio", 5000 },
>> + { "vddaon", 26000 },
>> + { "vddbtcxmx", 126000 },
>> + { "vddrfacmn", 12500 },
>> + { "vddrfa0p8", 102000 },
>> + { "vddrfa1p7", 302000 },
>> + { "vddrfa1p2", 257000 },
>> + { "vddrfa2p2", 1700000 },
>> + { "vddasd", 200 },
>> + },
>> + .num_vregs = 9,
>> + .capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES,
>> +};
>> +
>> static void qca_power_shutdown(struct hci_uart *hu)
>> {
>> struct qca_serdev *qcadev;
>> struct qca_data *qca = hu->priv;
>> unsigned long flags;
>> enum qca_btsoc_type soc_type = qca_soc_type(hu);
>> + bool sw_ctrl_state;
>>
>> qcadev = serdev_device_get_drvdata(hu->serdev);
>>
>> @@ -1856,8 +1897,14 @@ static void qca_power_shutdown(struct hci_uart
>> *hu)
>> host_set_baudrate(hu, 2400);
>> qca_send_power_pulse(hu, false);
>> qca_regulator_disable(qcadev);
>> + } else if (soc_type == QCA_WCN6750) {
>> + gpiod_set_value_cansleep(qcadev->bt_en, BT_OFF);
>> + msleep(100);
>> + qca_regulator_disable(qcadev);
>> + sw_ctrl_state = gpiod_get_value_cansleep(qcadev->sw_ctrl);
>> + bt_dev_dbg(hu->hdev, "SW_CTRL is %d", sw_ctrl_state);
>> } else if (qcadev->bt_en) {
>> - gpiod_set_value_cansleep(qcadev->bt_en, 0);
>> + gpiod_set_value_cansleep(qcadev->bt_en, BT_OFF);
>> }
>>
>> set_bit(QCA_BT_OFF, &qca->flags);
>> @@ -1978,7 +2025,7 @@ static int qca_serdev_probe(struct serdev_device
>> *serdev)
>> if (!qcadev->oper_speed)
>> BT_DBG("UART will pick default operating speed");
>>
>> - if (data && qca_is_wcn399x(data->soc_type)) {
>> + if (data && qca_is_wcn399x_wcn6750(data->soc_type)) {
>> qcadev->btsoc_type = data->soc_type;
>> qcadev->bt_power = devm_kzalloc(&serdev->dev,
>> sizeof(struct qca_power),
>> @@ -1996,6 +2043,18 @@ static int qca_serdev_probe(struct
>> serdev_device *serdev)
>>
>> qcadev->bt_power->vregs_on = false;
>>
>> + qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
>> + GPIOD_OUT_LOW);
>> + if (!qcadev->bt_en && data->soc_type == QCA_WCN6750) {
>> + dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n");
>> + power_ctrl_enabled = false;
>> + }
>> +
>> + qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl",
>> + GPIOD_IN);
>> + if (!qcadev->sw_ctrl && data->soc_type == QCA_WCN6750)
>> + dev_warn(&serdev->dev, "failed to acquire SW_CTRL gpio\n");
>> +
>> qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL);
>> if (IS_ERR(qcadev->susclk)) {
>> dev_err(&serdev->dev, "failed to acquire clk\n");
>> @@ -2068,7 +2127,7 @@ static void qca_serdev_remove(struct
>> serdev_device *serdev)
>> struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev);
>> struct qca_power *power = qcadev->bt_power;
>>
>> - if (qca_is_wcn399x(qcadev->btsoc_type) && power->vregs_on)
>> + if (qca_is_wcn399x_wcn6750(qcadev->btsoc_type) && power->vregs_on)
>> qca_power_shutdown(&qcadev->serdev_hu);
>> else if (qcadev->susclk)
>> clk_disable_unprepare(qcadev->susclk);
>> @@ -2244,6 +2303,7 @@ static const struct of_device_id
>> qca_bluetooth_of_match[] = {
>> { .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990},
>> { .compatible = "qcom,wcn3991-bt", .data = &qca_soc_data_wcn3991},
>> { .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998},
>> + { .compatible = "qcom,wcn6750-bt", .data = &qca_soc_data_wcn6750},
>> { /* sentinel */ }
>> };
>> MODULE_DEVICE_TABLE(of, qca_bluetooth_of_match);
>> --
>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
>> member
>> of Code Aurora Forum, hosted by The Linux Foundation
>>

Regards,
Venkata.

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