by Rocky Liao

[permalink] [raw]

Subject: Re: [PATCH v4 1/2] Bluetooth: hci_qca: Load customized NVM based on the device property

Hi Bala,

On 2019-05-15 13:32, Balakrishna Godavarthi wrote:
> Hi Rocky,
>
> On 2019-05-12 08:49, Rocky Liao wrote:
>> QCA BTSOC NVM is a customized firmware file and different vendors may
>> want to have different BTSOC configuration (e.g. Configure SCO over
>> PCM
>> or I2S, Setting Tx power, etc.) via this file. This patch will allow
>> vendors to download different NVM firmware file by reading a device
>> property "firmware-name".
>>
>> Signed-off-by: Rocky Liao <[email protected]>
>> ---
>> Changes in v4:
>> * rebased the code base and merge with latest code
>> ---
>> drivers/bluetooth/btqca.c | 14 ++++++++++----
>> drivers/bluetooth/btqca.h | 6 ++++--
>> drivers/bluetooth/hci_qca.c | 19 ++++++++++++++++++-
>> 3 files changed, 32 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
>> index cc12eec..0ea690a 100644
>> --- a/drivers/bluetooth/btqca.c
>> +++ b/drivers/bluetooth/btqca.c
>> @@ -332,7 +332,8 @@ int qca_set_bdaddr_rome(struct hci_dev *hdev,
>> const bdaddr_t *bdaddr)
>> EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
>>
>> int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
>> - enum qca_btsoc_type soc_type, u32 soc_ver)
>> + enum qca_btsoc_type soc_type, u32 soc_ver,
>> + const char *firmware_name)
>> {
>> struct rome_config config;
>> int err;
>> @@ -368,9 +369,14 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t
>> baudrate,
>> if (qca_is_wcn399x(soc_type))
>> snprintf(config.fwname, sizeof(config.fwname),
>> "qca/crnv%02x.bin", rom_ver);
>> - else
>> - snprintf(config.fwname, sizeof(config.fwname),
>> - "qca/nvm_%08x.bin", soc_ver);
>> + else {
>> + if (firmware_name)
>> + snprintf(config.fwname, sizeof(config.fwname),
>> + "qca/%s", firmware_name);
>> + else
>> + snprintf(config.fwname, sizeof(config.fwname),
>> + "qca/nvm_%08x.bin", soc_ver);
>> + }
>>
> [Bala]: Can you make this change applicable to the wcn399x series
> chip sets too.
>
> something like this
>
> if (qca_is_wcn399x(soc_type) && !firmware_name)
> snprintf(config.fwname, sizeof(config.fwname),
> "qca/crnv%02x.bin", rom_ver);
> elseif (firmware_name)
> snprintf(config.fwname, sizeof(config.fwname),
> "qca/%s", firmware_name);
> else
> snprintf(config.fwname, sizeof(config.fwname),
> "qca/nvm_%08x.bin", soc_ver);
>
>
>> err = qca_download_firmware(hdev, &config);
>> if (err < 0) {
>> diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
>> index 4c4fe2b..8c037bb 100644
>> --- a/drivers/bluetooth/btqca.h
>> +++ b/drivers/bluetooth/btqca.h
>> @@ -140,7 +140,8 @@ enum qca_btsoc_type {
>>
>> 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, u32 soc_ver);
>> + enum qca_btsoc_type soc_type, u32 soc_ver,
>> + const char *firmware_name);
>> int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version);
>> int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
>> static inline bool qca_is_wcn399x(enum qca_btsoc_type soc_type)
>> @@ -155,7 +156,8 @@ static inline int qca_set_bdaddr_rome(struct
>> hci_dev *hdev, const bdaddr_t *bdad
>> }
>>
>> static inline int qca_uart_setup(struct hci_dev *hdev, uint8_t
>> baudrate,
>> - enum qca_btsoc_type soc_type, u32 soc_ver)
>> + enum qca_btsoc_type soc_type, u32 soc_ver,
>> + const char *firmware_name)
>> {
>> return -EOPNOTSUPP;
>> }
>> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
>> index 57322c4..9590602 100644
>> --- a/drivers/bluetooth/hci_qca.c
>> +++ b/drivers/bluetooth/hci_qca.c
>> @@ -169,6 +169,7 @@ struct qca_serdev {
>> struct qca_power *bt_power;
>> u32 init_speed;
>> u32 oper_speed;
>> + const char *firmware_name;
>> };
>>
>> static int qca_power_setup(struct hci_uart *hu, bool on);
>> @@ -190,6 +191,17 @@ static enum qca_btsoc_type qca_soc_type(struct
>> hci_uart *hu)
>> return soc_type;
>> }
>>
>> +static const char *qca_get_firmware_name(struct hci_uart *hu)
>> +{
>> + if (hu->serdev) {
>> + struct qca_serdev *qsd = serdev_device_get_drvdata(hu->serdev);
>> +
>> + return qsd->firmware_name;
>> + } else {
>> + return NULL;
>> + }
>> +}
>> +
>> static void __serial_clock_on(struct tty_struct *tty)
>> {
>> /* TODO: Some chipset requires to enable UART clock on client
>> @@ -1195,6 +1207,7 @@ static int qca_setup(struct hci_uart *hu)
>> struct qca_data *qca = hu->priv;
>> unsigned int speed, qca_baudrate = QCA_BAUDRATE_115200;
>> enum qca_btsoc_type soc_type = qca_soc_type(hu);
>> + const char *firmware_name = qca_get_firmware_name(hu);
>> int ret;
>> int soc_ver = 0;
>>
>> @@ -1245,7 +1258,8 @@ static int qca_setup(struct hci_uart *hu)
>>
>> bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);
>> /* Setup patch / NVM configurations */
>> - ret = qca_uart_setup(hdev, qca_baudrate, soc_type, soc_ver);
>> + ret = qca_uart_setup(hdev, qca_baudrate, soc_type, soc_ver,
>> + firmware_name);
>> if (!ret) {
>> set_bit(QCA_IBS_ENABLED, &qca->flags);
>> qca_debugfs_init(hdev);
>> @@ -1477,6 +1491,9 @@ static int qca_serdev_probe(struct serdev_device
>> *serdev)
>> return PTR_ERR(qcadev->bt_en);
>> }
>>
>> + device_property_read_string(&serdev->dev, "firmware-name",
>> + &qcadev->firmware_name);
>> +
>> qcadev->susclk = devm_clk_get(&serdev->dev, NULL);
>> if (IS_ERR(qcadev->susclk)) {
>> dev_err(&serdev->dev, "failed to acquire clk\n");

OK, will make the change and send out the updated version soon.

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