Re: [PATCH v4 2/4] Bluetooth: qca: Add support in firmware-name to load board specific nvm

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Dmitry, 

On 12/10/2024 11:28 PM, Dmitry Baryshkov wrote:
> On Tue, Dec 10, 2024 at 11:16:34PM +0800, Cheng Jiang wrote:
>> Different connectivity boards may be attached to the same platform. For
>> example, QCA6698-based boards can support either a two-antenna or
>> three-antenna solution, both of which work on the sa8775p-ride platform.
>> Due to differences in connectivity boards and variations in RF
>> performance from different foundries, different NVM configurations are
>> used based on the board ID.
>>
>> Therefore, in the firmware-name property, if the NVM file has an
>> extension, the NVM file will be used. Otherwise, the system will first
>> try the .bNN (board ID) file, and if that fails, it will fall back to
>> the .bin file.
>>
>> Possible configurations:
>> firmware-name = "QCA6698/hpnv21";
>> firmware-name = "QCA6698/hpnv21.bin";
>>
>> Signed-off-by: Cheng Jiang <quic_chejiang@xxxxxxxxxxx>
>> ---
>>  drivers/bluetooth/btqca.c | 67 +++++++++++++++++++++++++++++++++++++--
>>  1 file changed, 65 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
>> index dfbbac922..deb2b1753 100644
>> --- a/drivers/bluetooth/btqca.c
>> +++ b/drivers/bluetooth/btqca.c
>> @@ -272,6 +272,27 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
>>  }
>>  EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
>>  
>> +static bool qca_get_alt_nvm_path(char *path, size_t max_size)
>> +{
>> +	char fwname[64];
>> +	const char *suffix;
>> +
>> +	suffix = strrchr(path, '.');
>> +
>> +	/* nvm file name has a suffix, replace with .bin */
>> +	if (suffix && suffix != path && *(suffix + 1) != '\0' && strchr(suffix, '/') == NULL) {
>> +		strscpy(fwname, path, suffix - path + 1);
>> +		snprintf(fwname + (suffix - path), sizeof(fwname) - (suffix - path), ".bin");
>> +		/* If nvm file is already the default one, return false to skip the retry. */
>> +		if (strcmp(fwname, path) == 0)
>> +			return false;
>> +
>> +		snprintf(path, max_size, "%s", fwname);
>> +		return true;
>> +	}
>> +	return false;
>> +}
>> +
>>  static int qca_tlv_check_data(struct hci_dev *hdev,
>>  			       struct qca_fw_config *config,
>>  			       u8 *fw_data, size_t fw_size,
>> @@ -564,6 +585,19 @@ static int qca_download_firmware(struct hci_dev *hdev,
>>  					   config->fwname, ret);
>>  				return ret;
>>  			}
>> +		}
>> +		/* For nvm, if desired nvm file is not present and it's not the
>> +		 * default nvm file(ends with .bin), try to load the default nvm.
>> +		 */
>> +		else if (config->type == TLV_TYPE_NVM &&
>> +			 qca_get_alt_nvm_path(config->fwname, sizeof(config->fwname))) {
>> +			bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
>> +			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);
>> @@ -730,6 +764,26 @@ static inline void qca_get_nvm_name_generic(struct qca_fw_config *cfg,
>>  			 "qca/%snv%02x.b%02x", stem, rom_ver, bid);
>>  }
>>  
>> +static void qca_get_nvm_name_by_board(char *fwname, size_t max_size,
>> +		const char *firmware_name, struct qca_btsoc_version ver,
>> +		enum qca_btsoc_type soc_type, u16 bid)
>> +{
>> +	const char *variant;
>> +
>> +	/* Set the variant to empty by default */
>> +	variant = "";
>> +	/* hsp gf chip */
>> +	if (soc_type == QCA_WCN6855) {
>> +		if ((le32_to_cpu(ver.soc_id) & QCA_HSP_GF_SOC_MASK) == QCA_HSP_GF_SOC_ID)
>> +			variant = "g";
>> +	}
>> +
>> +	if (bid == 0x0 || bid == 0xffff)
>> +		snprintf(fwname, max_size, "qca/%s%s.bin", firmware_name, variant);
>> +	else
>> +		snprintf(fwname, max_size, "qca/%s%s.b%02x", firmware_name, variant, bid);
> 
> So, we have qca_generate_hsp_nvm_name(), qca_get_nvm_name_generic(), now
> you are adding a third one. Can we please have a single function that
> handles that?
> 
Ack, will use a single function to handle this.
>> +}
>> +
>>  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)
>> @@ -739,6 +793,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
>>  	u8 rom_ver = 0;
>>  	u32 soc_ver;
>>  	u16 boardid = 0;
>> +	const char *suffix;
>>  
>>  	bt_dev_dbg(hdev, "QCA setup on UART");
>>  
>> @@ -816,8 +871,16 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
>>  	/* Download NVM configuration */
>>  	config.type = TLV_TYPE_NVM;
>>  	if (firmware_name) {
>> -		snprintf(config.fwname, sizeof(config.fwname),
>> -			 "qca/%s", firmware_name);
>> +		/* The firmware name has suffix, use it directly */
>> +		suffix = strrchr(firmware_name, '.');
>> +		if (suffix && suffix != firmware_name &&
>> +			*(suffix + 1) != '\0' && strchr(suffix, '/') == NULL) {
> 
> The have-suffix code should be extracted to a helper function. You have
> two copies of it.
> 
Ack.
>> +			snprintf(config.fwname, sizeof(config.fwname), "qca/%s", firmware_name);
>> +		} else {
>> +			qca_read_fw_board_id(hdev, &boardid);
>> +			qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
>> +				 firmware_name, ver, soc_type, boardid);
>> +		}
>>  	} else {
>>  		switch (soc_type) {
>>  		case QCA_WCN3990:
>> -- 
>> 2.25.1
>>
> 





[Index of Archives]     [Bluez Devel]     [Linux Wireless Networking]     [Linux Wireless Personal Area Networking]     [Linux ATH6KL]     [Linux USB Devel]     [Linux Media Drivers]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Big List of Linux Books]

  Powered by Linux