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Date: Tue, 26 Mar 2019 15:23:14 +0530
From: c-hbandi@...eaurora.org
To: Matthias Kaehlcke <mka@...omium.org>
Cc: marcel@...tmann.org, johan.hedberg@...il.com,
linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
hemantg@...eaurora.org, linux-arm-msm@...r.kernel.org,
bgodavar@...eaurora.org, anubhavg@...eaurora.org,
devicetree@...r.kernel.org, mark.rutland@....com,
robh+dt@...nel.org
Subject: Re: [PATCH v4 1/2] Bluetooth: hci_qca: Added support for WCN3998
Hi Matthias,
On 2019-03-25 21:51, Matthias Kaehlcke wrote:
> On Mon, Mar 25, 2019 at 05:06:39PM +0530, Harish Bandi wrote:
>> 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@...eaurora.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) {
>
> Move qca_is_wcn399x() to btqca.c and use it here. Export the symbol
> and declare the function in btqca.h, so it can be used in hci_qca.c
[Harish] - ok, will update in new patch
>
>> /* 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)
>
> use qca_is_wcn399x()
[Harish] - ok, will update in new patch
>
>> 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)
>
> This long function name doesn't provide much value and degrades
> readability of the code that uses it. A short name like
> qca_is_wcn399x() is clear enough and friendlier to the code reader's
> eyes.
>
>> +{
>> + 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)
>> {
>
> Why '>= QCA_WCN3990'?
[Harish] - ok, it should not will check and correct it.
>
>> 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)
>
> use qca_is_wcn399x()
[Harish] - ok, will update in new patch
>
>> 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);
Thanks,
Harish
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