Re: [PATCH v4 1/2] Bluetooth: hci_qca: Added support for WCN3998
From: Matthias Kaehlcke
Date: Mon Mar 25 2019 - 12:21:23 EST
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@xxxxxxxxxxxxxx>
> ---
> 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
> /* 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()
> 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'?
> 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()
> 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);