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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.c135
1 files changed, 55 insertions, 80 deletions
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index e3164c200eac..c591a8ba9d93 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -130,8 +130,6 @@ enum qca_speed_type {
*/
struct qca_vreg {
const char *name;
- unsigned int min_uV;
- unsigned int max_uV;
unsigned int load_uA;
};
@@ -146,8 +144,8 @@ struct qca_vreg_data {
*/
struct qca_power {
struct device *dev;
- const struct qca_vreg_data *vreg_data;
struct regulator_bulk_data *vreg_bulk;
+ int num_vregs;
bool vregs_on;
};
@@ -162,7 +160,8 @@ struct qca_serdev {
const char *firmware_name;
};
-static int qca_power_setup(struct hci_uart *hu, bool on);
+static int qca_regulator_enable(struct qca_serdev *qcadev);
+static void qca_regulator_disable(struct qca_serdev *qcadev);
static void qca_power_shutdown(struct hci_uart *hu);
static int qca_power_off(struct hci_dev *hdev);
@@ -518,7 +517,7 @@ static int qca_open(struct hci_uart *hu)
} else {
hu->init_speed = qcadev->init_speed;
hu->oper_speed = qcadev->oper_speed;
- ret = qca_power_setup(hu, true);
+ ret = qca_regulator_enable(qcadev);
if (ret) {
destroy_workqueue(qca->workqueue);
kfree_skb(qca->rx_skb);
@@ -1188,7 +1187,7 @@ static int qca_wcn3990_init(struct hci_uart *hu)
qcadev = serdev_device_get_drvdata(hu->serdev);
if (!qcadev->bt_power->vregs_on) {
serdev_device_close(hu->serdev);
- ret = qca_power_setup(hu, true);
+ ret = qca_regulator_enable(qcadev);
if (ret)
return ret;
@@ -1332,10 +1331,10 @@ static const struct hci_uart_proto qca_proto = {
static const struct qca_vreg_data qca_soc_data_wcn3990 = {
.soc_type = QCA_WCN3990,
.vregs = (struct qca_vreg []) {
- { "vddio", 1800000, 1900000, 15000 },
- { "vddxo", 1800000, 1900000, 80000 },
- { "vddrf", 1300000, 1350000, 300000 },
- { "vddch0", 3300000, 3400000, 450000 },
+ { "vddio", 15000 },
+ { "vddxo", 80000 },
+ { "vddrf", 300000 },
+ { "vddch0", 450000 },
},
.num_vregs = 4,
};
@@ -1343,19 +1342,22 @@ static const struct qca_vreg_data qca_soc_data_wcn3990 = {
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 },
+ { "vddio", 10000 },
+ { "vddxo", 80000 },
+ { "vddrf", 300000 },
+ { "vddch0", 450000 },
},
.num_vregs = 4,
};
static void qca_power_shutdown(struct hci_uart *hu)
{
+ struct qca_serdev *qcadev;
struct qca_data *qca = hu->priv;
unsigned long flags;
+ qcadev = serdev_device_get_drvdata(hu->serdev);
+
/* 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
* data in skb's.
@@ -1367,7 +1369,7 @@ static void qca_power_shutdown(struct hci_uart *hu)
host_set_baudrate(hu, 2400);
qca_send_power_pulse(hu, false);
- qca_power_setup(hu, false);
+ qca_regulator_disable(qcadev);
}
static int qca_power_off(struct hci_dev *hdev)
@@ -1383,97 +1385,71 @@ static int qca_power_off(struct hci_dev *hdev)
return 0;
}
-static int qca_enable_regulator(struct qca_vreg vregs,
- struct regulator *regulator)
+static int qca_regulator_enable(struct qca_serdev *qcadev)
{
+ struct qca_power *power = qcadev->bt_power;
int ret;
- ret = regulator_set_voltage(regulator, vregs.min_uV,
- vregs.max_uV);
- if (ret)
- return ret;
+ /* Already enabled */
+ if (power->vregs_on)
+ return 0;
- if (vregs.load_uA)
- ret = regulator_set_load(regulator,
- vregs.load_uA);
+ BT_DBG("enabling %d regulators)", power->num_vregs);
+ ret = regulator_bulk_enable(power->num_vregs, power->vreg_bulk);
if (ret)
return ret;
- return regulator_enable(regulator);
-
-}
-
-static void qca_disable_regulator(struct qca_vreg vregs,
- struct regulator *regulator)
-{
- regulator_disable(regulator);
- regulator_set_voltage(regulator, 0, vregs.max_uV);
- if (vregs.load_uA)
- regulator_set_load(regulator, 0);
+ power->vregs_on = true;
+ return 0;
}
-static int qca_power_setup(struct hci_uart *hu, bool on)
+static void qca_regulator_disable(struct qca_serdev *qcadev)
{
- struct qca_vreg *vregs;
- struct regulator_bulk_data *vreg_bulk;
- struct qca_serdev *qcadev;
- int i, num_vregs, ret = 0;
+ struct qca_power *power;
- qcadev = serdev_device_get_drvdata(hu->serdev);
- if (!qcadev || !qcadev->bt_power || !qcadev->bt_power->vreg_data ||
- !qcadev->bt_power->vreg_bulk)
- return -EINVAL;
-
- vregs = qcadev->bt_power->vreg_data->vregs;
- vreg_bulk = qcadev->bt_power->vreg_bulk;
- num_vregs = qcadev->bt_power->vreg_data->num_vregs;
- BT_DBG("on: %d", on);
- if (on && !qcadev->bt_power->vregs_on) {
- for (i = 0; i < num_vregs; i++) {
- ret = qca_enable_regulator(vregs[i],
- vreg_bulk[i].consumer);
- if (ret)
- break;
- }
+ if (!qcadev)
+ return;
- if (ret) {
- BT_ERR("failed to enable regulator:%s", vregs[i].name);
- /* turn off regulators which are enabled */
- for (i = i - 1; i >= 0; i--)
- qca_disable_regulator(vregs[i],
- vreg_bulk[i].consumer);
- } else {
- qcadev->bt_power->vregs_on = true;
- }
- } else if (!on && qcadev->bt_power->vregs_on) {
- /* turn off regulator in reverse order */
- i = qcadev->bt_power->vreg_data->num_vregs - 1;
- for ( ; i >= 0; i--)
- qca_disable_regulator(vregs[i], vreg_bulk[i].consumer);
+ power = qcadev->bt_power;
- qcadev->bt_power->vregs_on = false;
- }
+ /* Already disabled? */
+ if (!power->vregs_on)
+ return;
- return ret;
+ regulator_bulk_disable(power->num_vregs, power->vreg_bulk);
+ power->vregs_on = false;
}
static int qca_init_regulators(struct qca_power *qca,
const struct qca_vreg *vregs, size_t num_vregs)
{
+ struct regulator_bulk_data *bulk;
+ int ret;
int i;
- qca->vreg_bulk = devm_kcalloc(qca->dev, num_vregs,
- sizeof(struct regulator_bulk_data),
- GFP_KERNEL);
- if (!qca->vreg_bulk)
+ bulk = devm_kcalloc(qca->dev, num_vregs, sizeof(*bulk), GFP_KERNEL);
+ if (!bulk)
return -ENOMEM;
for (i = 0; i < num_vregs; i++)
- qca->vreg_bulk[i].supply = vregs[i].name;
+ bulk[i].supply = vregs[i].name;
+
+ ret = devm_regulator_bulk_get(qca->dev, num_vregs, bulk);
+ if (ret < 0)
+ return ret;
- return devm_regulator_bulk_get(qca->dev, num_vregs, qca->vreg_bulk);
+ for (i = 0; i < num_vregs; i++) {
+ ret = regulator_set_load(bulk[i].consumer, vregs[i].load_uA);
+ if (ret)
+ return ret;
+ }
+
+ qca->vreg_bulk = bulk;
+ qca->num_vregs = num_vregs;
+
+ return 0;
}
static int qca_serdev_probe(struct serdev_device *serdev)
@@ -1500,7 +1476,6 @@ static int qca_serdev_probe(struct serdev_device *serdev)
return -ENOMEM;
qcadev->bt_power->dev = &serdev->dev;
- qcadev->bt_power->vreg_data = data;
err = qca_init_regulators(qcadev->bt_power, data->vregs,
data->num_vregs);
if (err) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.