[PATCH 3/4] Bluetooth: hci_qca: Use regulator bulk enable/disable

[Bjorn Andersson]

With the regulator_set_load() and regulator_set_voltage() out of the
enable/disable code paths the code can now use the standard
regulator bulk enable/disable API.

By cloning num_vregs into struct qca_power there's no need to lug around
a reference to the struct qca_vreg_data, which further simplifies
qca_power_setup().

Signed-off-by: Bjorn Andersson <bjorn.anders...@linaro.org>
---
 drivers/bluetooth/hci_qca.c | 55 +++++++++----------------------------
 1 file changed, 13 insertions(+), 42 deletions(-)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 54aafcc69d06..01f941e9adf3 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -144,8 +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;
 };
 
@@ -1381,63 +1381,34 @@ static int qca_power_off(struct hci_dev *hdev)
        return 0;
 }
 
-static int qca_enable_regulator(struct qca_vreg vregs,
-                               struct regulator *regulator)
-{
-       return regulator_enable(regulator);
-
-}
-
-static void qca_disable_regulator(struct qca_vreg vregs,
-                                 struct regulator *regulator)
-{
-       regulator_disable(regulator);
-
-}
-
 static int qca_power_setup(struct hci_uart *hu, bool on)
 {
-       struct qca_vreg *vregs;
        struct regulator_bulk_data *vreg_bulk;
        struct qca_serdev *qcadev;
-       int i, num_vregs, ret = 0;
+       int num_vregs;
+       int ret = 0;
 
        qcadev = serdev_device_get_drvdata(hu->serdev);
-       if (!qcadev || !qcadev->bt_power || !qcadev->bt_power->vreg_data ||
-           !qcadev->bt_power->vreg_bulk)
+       if (!qcadev || !qcadev->bt_power || !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);
+       num_vregs = qcadev->bt_power->num_vregs;
+       BT_DBG("on: %d (%d regulators)", on, num_vregs);
        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;
-               }
+               ret = regulator_bulk_enable(num_vregs, vreg_bulk);
+               if (ret)
+                       return ret;
 
-               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;
-               }
+               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);
+               regulator_bulk_disable(num_vregs, vreg_bulk);
 
                qcadev->bt_power->vregs_on = false;
        }
 
-       return ret;
+       return 0;
 }
 
 static int qca_init_regulators(struct qca_power *qca,
@@ -1465,6 +1436,7 @@ static int qca_init_regulators(struct qca_power *qca,
        }
 
        qca->vreg_bulk = bulk;
+       qca->num_vregs = num_vregs;
 
        return 0;
 }
@@ -1493,7 +1465,6 @@ 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) {
-- 
2.23.0