diff options
Diffstat (limited to 'drivers/iio/accel')
| -rw-r--r-- | drivers/iio/accel/bmc150-accel-core.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index 1c9e44f8bc3e..20dc7bc291f8 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -28,6 +28,7 @@ #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include "bmc150-accel.h" @@ -184,6 +185,7 @@ enum bmc150_accel_trigger_id { struct bmc150_accel_data { struct regmap *regmap; + struct regulator_bulk_data regulators[2]; int irq; struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS]; struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS]; @@ -1592,10 +1594,33 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, &data->orientation); if (ret) return ret; + /* + * VDD is the analog and digital domain voltage supply + * VDDIO is the digital I/O voltage supply + */ + data->regulators[0].supply = "vdd"; + data->regulators[1].supply = "vddio"; + ret = devm_regulator_bulk_get(dev, + ARRAY_SIZE(data->regulators), + data->regulators); + if (ret) + return dev_err_probe(dev, ret, "failed to get regulators\n"); + + ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators), + data->regulators); + if (ret) { + dev_err(dev, "failed to enable regulators: %d\n", ret); + return ret; + } + /* + * 2ms or 3ms power-on time according to datasheets, let's better + * be safe than sorry and set this delay to 5ms. + */ + msleep(5); ret = bmc150_accel_chip_init(data); if (ret < 0) - return ret; + goto err_disable_regulators; mutex_init(&data->mutex); @@ -1621,7 +1646,7 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, fifo_attrs); if (ret < 0) { dev_err(dev, "Failed: iio triggered buffer setup\n"); - return ret; + goto err_disable_regulators; } if (data->irq > 0) { @@ -1675,6 +1700,9 @@ err_trigger_unregister: bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1); err_buffer_cleanup: iio_triggered_buffer_cleanup(indio_dev); +err_disable_regulators: + regulator_bulk_disable(ARRAY_SIZE(data->regulators), + data->regulators); return ret; } @@ -1699,6 +1727,9 @@ int bmc150_accel_core_remove(struct device *dev) bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_DEEP_SUSPEND, 0); mutex_unlock(&data->mutex); + regulator_bulk_disable(ARRAY_SIZE(data->regulators), + data->regulators); + return 0; } EXPORT_SYMBOL_GPL(bmc150_accel_core_remove); |