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path: root/drivers/bluetooth/hci_qca.c
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Diffstat (limited to 'drivers/bluetooth/hci_qca.c')
-rw-r--r--drivers/bluetooth/hci_qca.c133
1 files changed, 98 insertions, 35 deletions
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 9a0bc86f9aac..ca6466676902 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -28,6 +28,7 @@
#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>
@@ -214,6 +215,7 @@ struct qca_power {
struct regulator_bulk_data *vreg_bulk;
int num_vregs;
bool vregs_on;
+ struct pwrseq_desc *pwrseq;
};
struct qca_serdev {
@@ -569,7 +571,7 @@ static int qca_open(struct hci_uart *hu)
if (!hci_uart_has_flow_control(hu))
return -EOPNOTSUPP;
- qca = kzalloc(sizeof(struct qca_data), GFP_KERNEL);
+ qca = kzalloc(sizeof(*qca), GFP_KERNEL);
if (!qca)
return -ENOMEM;
@@ -1040,8 +1042,7 @@ static void qca_controller_memdump(struct work_struct *work)
}
if (!qca_memdump) {
- qca_memdump = kzalloc(sizeof(struct qca_memdump_info),
- GFP_ATOMIC);
+ qca_memdump = kzalloc(sizeof(*qca_memdump), GFP_ATOMIC);
if (!qca_memdump) {
mutex_unlock(&qca->hci_memdump_lock);
return;
@@ -1685,6 +1686,27 @@ static bool qca_wakeup(struct hci_dev *hdev)
return wakeup;
}
+static int qca_port_reopen(struct hci_uart *hu)
+{
+ int ret;
+
+ /* Now the device is in ready state to communicate with host.
+ * To sync host with device we need to reopen port.
+ * Without this, we will have RTS and CTS synchronization
+ * issues.
+ */
+ serdev_device_close(hu->serdev);
+ ret = serdev_device_open(hu->serdev);
+ if (ret) {
+ bt_dev_err(hu->hdev, "failed to open port");
+ return ret;
+ }
+
+ hci_uart_set_flow_control(hu, false);
+
+ return 0;
+}
+
static int qca_regulator_init(struct hci_uart *hu)
{
enum qca_btsoc_type soc_type = qca_soc_type(hu);
@@ -1696,6 +1718,7 @@ 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) {
serdev_device_close(hu->serdev);
ret = qca_regulator_enable(qcadev);
@@ -1753,21 +1776,7 @@ static int qca_regulator_init(struct hci_uart *hu)
break;
}
- /* Now the device is in ready state to communicate with host.
- * To sync host with device we need to reopen port.
- * Without this, we will have RTS and CTS synchronization
- * issues.
- */
- serdev_device_close(hu->serdev);
- ret = serdev_device_open(hu->serdev);
- if (ret) {
- bt_dev_err(hu->hdev, "failed to open port");
- return ret;
- }
-
- hci_uart_set_flow_control(hu, false);
-
- return 0;
+ return qca_port_reopen(hu);
}
static int qca_power_on(struct hci_dev *hdev)
@@ -1792,6 +1801,7 @@ static int qca_power_on(struct hci_dev *hdev)
case QCA_WCN6750:
case QCA_WCN6855:
case QCA_WCN7850:
+ case QCA_QCA6390:
ret = qca_regulator_init(hu);
break;
@@ -2130,6 +2140,7 @@ static void qca_power_shutdown(struct hci_uart *hu)
unsigned long flags;
enum qca_btsoc_type soc_type = qca_soc_type(hu);
bool sw_ctrl_state;
+ struct qca_power *power;
/* From this point we go into power off state. But serial port is
* still open, stop queueing the IBS data and flush all the buffered
@@ -2147,6 +2158,13 @@ static void qca_power_shutdown(struct hci_uart *hu)
return;
qcadev = serdev_device_get_drvdata(hu->serdev);
+ power = qcadev->bt_power;
+
+ if (power->pwrseq) {
+ pwrseq_power_off(power->pwrseq);
+ set_bit(QCA_BT_OFF, &qca->flags);
+ return;
+ }
switch (soc_type) {
case QCA_WCN3988:
@@ -2169,6 +2187,10 @@ 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);
}
@@ -2204,6 +2226,9 @@ static int qca_regulator_enable(struct qca_serdev *qcadev)
struct qca_power *power = qcadev->bt_power;
int ret;
+ if (power->pwrseq)
+ return pwrseq_power_on(power->pwrseq);
+
/* Already enabled */
if (power->vregs_on)
return 0;
@@ -2272,6 +2297,13 @@ static int qca_init_regulators(struct qca_power *qca,
return 0;
}
+static void qca_clk_disable_unprepare(void *data)
+{
+ struct clk *clk = data;
+
+ clk_disable_unprepare(clk);
+}
+
static int qca_serdev_probe(struct serdev_device *serdev)
{
struct qca_serdev *qcadev;
@@ -2310,12 +2342,40 @@ 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_WCN6855:
+ case QCA_WCN7850:
+ if (!device_property_present(&serdev->dev, "enable-gpios")) {
+ /*
+ * Backward compatibility with old DT sources. If the
+ * node doesn't have the 'enable-gpios' property then
+ * let's use the power sequencer. Otherwise, let's
+ * drive everything outselves.
+ */
+ qcadev->bt_power->pwrseq = devm_pwrseq_get(&serdev->dev,
+ "bluetooth");
+ if (IS_ERR(qcadev->bt_power->pwrseq))
+ return PTR_ERR(qcadev->bt_power->pwrseq);
+ break;
+ }
+ fallthrough;
+ case QCA_WCN3988:
+ case QCA_WCN3990:
+ case QCA_WCN3991:
+ case QCA_WCN3998:
+ case QCA_WCN6750:
qcadev->bt_power->dev = &serdev->dev;
err = qca_init_regulators(qcadev->bt_power, data->vregs,
data->num_vregs);
@@ -2353,12 +2413,13 @@ static int qca_serdev_probe(struct serdev_device *serdev)
dev_err(&serdev->dev, "failed to acquire clk\n");
return PTR_ERR(qcadev->susclk);
}
+ break;
- err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
- if (err) {
- BT_ERR("wcn3990 serdev registration failed");
- return err;
- }
+ 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);
break;
default:
@@ -2385,12 +2446,18 @@ static int qca_serdev_probe(struct serdev_device *serdev)
if (err)
return err;
- err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
- if (err) {
- BT_ERR("Rome serdev registration failed");
- clk_disable_unprepare(qcadev->susclk);
+ err = devm_add_action_or_reset(&serdev->dev,
+ qca_clk_disable_unprepare,
+ qcadev->susclk);
+ if (err)
return err;
- }
+
+ }
+
+ err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
+ if (err) {
+ BT_ERR("serdev registration failed");
+ return err;
}
hdev = qcadev->serdev_hu.hdev;
@@ -2428,15 +2495,11 @@ static void qca_serdev_remove(struct serdev_device *serdev)
case QCA_WCN6750:
case QCA_WCN6855:
case QCA_WCN7850:
- if (power->vregs_on) {
+ if (power->vregs_on)
qca_power_shutdown(&qcadev->serdev_hu);
- break;
- }
- fallthrough;
-
+ break;
default:
- if (qcadev->susclk)
- clk_disable_unprepare(qcadev->susclk);
+ break;
}
hci_uart_unregister_device(&qcadev->serdev_hu);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-21 12:34:22 +0000