Re: [PATCH v3 4/7] Bluetooth: hci_qca: merge qca_power into qca_serdev

[Bjorn Andersson <bjorn.andersson@linaro.org>]

On Mon 21 Jun 17:31 CDT 2021, Dmitry Baryshkov wrote:

> There is no need to allocate separate structure for handling regulators
> used by QCA chips, we gain nothing from it. Move all used data fields
> directly to struct qca_serdev.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
>  drivers/bluetooth/hci_qca.c | 58 ++++++++++++++-----------------------
>  1 file changed, 22 insertions(+), 36 deletions(-)
> 
> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
> index 3704dbadba1d..9cc8a9153d76 100644
> --- a/drivers/bluetooth/hci_qca.c
> +++ b/drivers/bluetooth/hci_qca.c
> @@ -208,20 +208,15 @@ struct qca_device_data {
>  /*
>   * Platform data for the QCA Bluetooth power driver.
>   */
> -struct qca_power {
> -	struct device *dev;
> -	struct regulator_bulk_data *vreg_bulk;
> -	int num_vregs;
> -	bool vregs_on;
> -};
> -
>  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;
> +	struct regulator_bulk_data *vreg_bulk;
> +	int num_vregs;
> +	bool vregs_on;
>  	u32 init_speed;
>  	u32 oper_speed;
>  	const char *firmware_name;
> @@ -1602,7 +1597,7 @@ static int qca_regulator_init(struct hci_uart *hu)
>  	 * off the voltage regulator.
>  	 */
>  	qcadev = serdev_device_get_drvdata(hu->serdev);
> -	if (!qcadev->bt_power->vregs_on) {
> +	if (!qcadev->vregs_on) {
>  		serdev_device_close(hu->serdev);
>  		ret = qca_regulator_enable(qcadev);
>  		if (ret)
> @@ -1945,20 +1940,19 @@ static int qca_power_off(struct hci_dev *hdev)
>  
>  static int qca_regulator_enable(struct qca_serdev *qcadev)
>  {
> -	struct qca_power *power = qcadev->bt_power;
>  	int ret;
>  
>  	/* Already enabled */
> -	if (power->vregs_on)
> +	if (qcadev->vregs_on)
>  		return 0;
>  
> -	BT_DBG("enabling %d regulators)", power->num_vregs);
> +	BT_DBG("enabling %d regulators)", qcadev->num_vregs);
>  
> -	ret = regulator_bulk_enable(power->num_vregs, power->vreg_bulk);
> +	ret = regulator_bulk_enable(qcadev->num_vregs, qcadev->vreg_bulk);
>  	if (ret)
>  		return ret;
>  
> -	power->vregs_on = true;
> +	qcadev->vregs_on = true;
>  
>  	ret = clk_prepare_enable(qcadev->susclk);
>  	if (ret)
> @@ -1969,38 +1963,37 @@ static int qca_regulator_enable(struct qca_serdev *qcadev)
>  
>  static void qca_regulator_disable(struct qca_serdev *qcadev)
>  {
> -	struct qca_power *power;
> -
>  	if (!qcadev)
>  		return;
>  
> -	power = qcadev->bt_power;
> -
>  	/* Already disabled? */
> -	if (!power->vregs_on)
> +	if (!qcadev->vregs_on)
>  		return;
>  
> -	regulator_bulk_disable(power->num_vregs, power->vreg_bulk);
> -	power->vregs_on = false;
> +	regulator_bulk_disable(qcadev->num_vregs, qcadev->vreg_bulk);
> +	qcadev->vregs_on = false;
>  
>  	clk_disable_unprepare(qcadev->susclk);
>  }
>  
> -static int qca_init_regulators(struct qca_power *qca,
> -				const struct qca_vreg *vregs, size_t num_vregs)
> +static int qca_init_regulators(struct device *dev, struct qca_serdev *qca,
> +			       const struct qca_vreg *vregs, size_t num_vregs)
>  {
>  	struct regulator_bulk_data *bulk;
>  	int ret;
>  	int i;
>  
> -	bulk = devm_kcalloc(qca->dev, num_vregs, sizeof(*bulk), GFP_KERNEL);
> +	if (!num_vregs)
> +		return 0;
> +
> +	bulk = devm_kcalloc(dev, num_vregs, sizeof(*bulk), GFP_KERNEL);
>  	if (!bulk)
>  		return -ENOMEM;
>  
>  	for (i = 0; i < num_vregs; i++)
>  		bulk[i].supply = vregs[i].name;
>  
> -	ret = devm_regulator_bulk_get(qca->dev, num_vregs, bulk);
> +	ret = devm_regulator_bulk_get(dev, num_vregs, bulk);
>  	if (ret < 0)
>  		return ret;
>  
> @@ -2044,21 +2037,15 @@ static int qca_serdev_probe(struct serdev_device *serdev)
>  	if ((qca_is_wcn399x(data->soc_type) ||
>  	     qca_is_wcn6750(data->soc_type))) {
>  		qcadev->btsoc_type = data->soc_type;
> -		qcadev->bt_power = devm_kzalloc(&serdev->dev,
> -						sizeof(struct qca_power),
> -						GFP_KERNEL);
> -		if (!qcadev->bt_power)
> -			return -ENOMEM;
> -
> -		qcadev->bt_power->dev = &serdev->dev;
> -		err = qca_init_regulators(qcadev->bt_power, data->vregs,
> +
> +		err = qca_init_regulators(&serdev->dev, qcadev, data->vregs,
>  					  data->num_vregs);
>  		if (err) {
>  			BT_ERR("Failed to init regulators:%d", err);
>  			return err;
>  		}
>  
> -		qcadev->bt_power->vregs_on = false;
> +		qcadev->vregs_on = false;
>  
>  		qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
>  					       GPIOD_OUT_LOW);
> @@ -2139,11 +2126,10 @@ static int qca_serdev_probe(struct serdev_device *serdev)
>  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) ||
>  	     qca_is_wcn6750(qcadev->btsoc_type)) &&
> -	     power->vregs_on)
> +	     qcadev->vregs_on)
>  		qca_power_shutdown(&qcadev->serdev_hu);
>  	else if (qcadev->susclk)
>  		clk_disable_unprepare(qcadev->susclk);
> -- 
> 2.30.2
>