diff options
| author | Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org> | 2020-02-03 16:10:40 +0530 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2020-02-03 15:44:35 +0100 |
| commit | 66cb7051356434062108b5cd74744b6473150147 (patch) | |
| tree | de1ca08b5cde9d13db4c38b20bca70a39fcdd157 /drivers/bluetooth | |
| parent | fe66483156050f4eb63c4a1988f3b439e6c9ff2a (diff) | |
Bluetooth: hci_qca: Enable clocks required for BT SOC
Instead of relying on other subsytem to turn ON clocks
required for BT SoC to operate, voting them from the driver.
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/hci_qca.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index d6e0c99ee5eb..eacc65b02b30 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1755,6 +1755,13 @@ static int qca_regulator_enable(struct qca_serdev *qcadev) power->vregs_on = true; + ret = clk_prepare_enable(qcadev->susclk); + if (ret) { + /* Turn off regulators to overcome power leakage */ + qca_regulator_disable(qcadev); + return ret; + } + return 0; } @@ -1773,6 +1780,9 @@ static void qca_regulator_disable(struct qca_serdev *qcadev) regulator_bulk_disable(power->num_vregs, power->vreg_bulk); power->vregs_on = false; + + if (qcadev->susclk) + clk_disable_unprepare(qcadev->susclk); } static int qca_init_regulators(struct qca_power *qca, @@ -1839,6 +1849,12 @@ static int qca_serdev_probe(struct serdev_device *serdev) qcadev->bt_power->vregs_on = false; + qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL); + if (IS_ERR(qcadev->susclk)) { + dev_err(&serdev->dev, "failed to acquire clk\n"); + return PTR_ERR(qcadev->susclk); + } + device_property_read_u32(&serdev->dev, "max-speed", &qcadev->oper_speed); if (!qcadev->oper_speed) |