[PATCH v5 17/18] Bluetooth: qca: use the power sequencer for QCA6390

Bartosz Golaszewski
2024-02-16T20:33:40Z

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Use the pwrseq subsystem's consumer API to run the power-up sequence for
the Bluetooth module of the QCA6390 package.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
drivers/bluetooth/hci_qca.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index edd2a81b4d5e..6e747db30492 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -29,6 +29,7 @@
#include <linux/of.h>
#include <linux/acpi.h>
#include <linux/platform_device.h>
+#include <linux/pwrseq/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/serdev.h>
#include <linux/mutex.h>
@@ -215,6 +216,7 @@ struct qca_power {
struct regulator_bulk_data *vreg_bulk;
int num_vregs;
bool vregs_on;
+ struct pwrseq_desc *pwrseq;
};

struct qca_serdev {
@@ -1792,6 +1794,11 @@ static int qca_power_on(struct hci_dev *hdev)
ret = qca_regulator_init(hu);
break;

+ case QCA_QCA6390:
+ qcadev = serdev_device_get_drvdata(hu->serdev);
+ ret = pwrseq_power_on(qcadev->bt_power->pwrseq);
+ break;
+
default:
qcadev = serdev_device_get_drvdata(hu->serdev);
if (qcadev->bt_en) {
@@ -2170,6 +2177,10 @@ static void qca_power_shutdown(struct hci_uart *hu)
}
break;

+ case QCA_QCA6390:
+ pwrseq_power_off(qcadev->bt_power->pwrseq);
+ break;
+
default:
gpiod_set_value_cansleep(qcadev->bt_en, 0);
}
@@ -2308,12 +2319,25 @@ static int qca_serdev_probe(struct serdev_device *serdev)
case QCA_WCN6750:
case QCA_WCN6855:
case QCA_WCN7850:
+ case QCA_QCA6390:
qcadev->bt_power = devm_kzalloc(&serdev->dev,
sizeof(struct qca_power),
GFP_KERNEL);
if (!qcadev->bt_power)
return -ENOMEM;
+ break;
+ default:
+ break;
+ }

+ switch (qcadev->btsoc_type) {
+ case QCA_WCN3988:
+ case QCA_WCN3990:
+ case QCA_WCN3991:
+ case QCA_WCN3998:
+ case QCA_WCN6750:
+ case QCA_WCN6855:
+ case QCA_WCN7850:
qcadev->bt_power->dev = &serdev->dev;
err = qca_init_regulators(qcadev->bt_power, data->vregs,
data->num_vregs);
@@ -2354,6 +2378,13 @@ static int qca_serdev_probe(struct serdev_device *serdev)
}
break;

+ case QCA_QCA6390:
+ qcadev->bt_power->pwrseq = devm_pwrseq_get(&serdev->dev,
+ "bluetooth");
+ if (IS_ERR(qcadev->bt_power->pwrseq))
+ return PTR_ERR(qcadev->bt_power->pwrseq);
+ fallthrough;
+
default:
qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
GPIOD_OUT_LOW);
--
2.40.1