diff options
| author | Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> | 2020-02-19 15:39:53 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-03-08 17:28:38 +0000 |
| commit | 92e7407ab1bc5024eb467d5788aace0ceff78a9d (patch) | |
| tree | 86ec9935c2fc9ac09acd29bc08ca3913553493a1 /drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c | |
| parent | 398da9942359efad600b9efb33e6573fedc9276d (diff) | |
iio: imu: inv_mpu6050: rewrite power and engine management
Rewrite clock management to use automatic clock switching
present since MPU6500.
Sensors engine management can now turn on or off a batch of
sensors which simplifies usage a lot.
Temperature sensor is now turned on/off depending on usage.
Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c')
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c index 607104a2631e..3f402fa56d95 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c @@ -316,9 +316,9 @@ int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st) * * Returns 0 on success, a negative error code otherwise */ -int inv_mpu_magn_read(const struct inv_mpu6050_state *st, int axis, int *val) +int inv_mpu_magn_read(struct inv_mpu6050_state *st, int axis, int *val) { - unsigned int user_ctrl, status; + unsigned int status; __be16 data; uint8_t addr; unsigned int freq_hz, period_ms; @@ -350,16 +350,14 @@ int inv_mpu_magn_read(const struct inv_mpu6050_state *st, int axis, int *val) freq_hz = INV_MPU_MAGN_FREQ_HZ_MAX; period_ms = 1000 / freq_hz; - /* start i2c master, wait for xfer, stop */ - user_ctrl = st->chip_config.user_ctrl | INV_MPU6050_BIT_I2C_MST_EN; - ret = regmap_write(st->map, st->reg->user_ctrl, user_ctrl); + ret = inv_mpu6050_switch_engine(st, true, INV_MPU6050_SENSOR_MAGN); if (ret) return ret; /* need to wait 2 periods + half-period margin */ msleep(period_ms * 2 + period_ms / 2); - user_ctrl = st->chip_config.user_ctrl; - ret = regmap_write(st->map, st->reg->user_ctrl, user_ctrl); + + ret = inv_mpu6050_switch_engine(st, false, INV_MPU6050_SENSOR_MAGN); if (ret) return ret; |