diff options
| author | Matt Ranostay <matt.ranostay@intel.com> | 2016-02-22 13:39:08 -0800 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-02-25 19:48:47 +0000 |
| commit | 8f356be3fe098385e7a79ce893114ddcf8ad7d78 (patch) | |
| tree | 99586015a5949b0bc912eab83dad3c8e62487d51 | |
| parent | 115f0341bcac7734a78561791700af0c5c0b207d (diff) | |
| download | talos-obmc-linux-8f356be3fe098385e7a79ce893114ddcf8ad7d78.tar.gz talos-obmc-linux-8f356be3fe098385e7a79ce893114ddcf8ad7d78.zip | |
iio: imu: mpu6050: fix INV_MPU6050_REG_UP_TIME delay
replace msleep(INV_MPU6050_REG_UP_TIME) with usleep_range calls
due to fact the wait time is under 20 milliseconds.
Signed-off-by: Matt Ranostay <matt.ranostay@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 3 | ||||
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c | 3 | ||||
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h | 7 |
3 files changed, 10 insertions, 3 deletions
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index 5396dde919a7..1578493f6105 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -151,7 +151,8 @@ int inv_mpu6050_set_power_itg(struct inv_mpu6050_state *st, bool power_on) return result; if (power_on) - msleep(INV_MPU6050_REG_UP_TIME); + usleep_range(INV_MPU6050_REG_UP_TIME_MIN, + INV_MPU6050_REG_UP_TIME_MAX); return 0; } diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c index 71bdaa33cd05..8d2b74eaa8b6 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c @@ -68,7 +68,8 @@ static int inv_mpu6050_select_bypass(struct i2c_adapter *adap, void *mux_priv, if (ret) goto write_error; - msleep(INV_MPU6050_REG_UP_TIME); + usleep_range(INV_MPU6050_REG_UP_TIME_MIN, + INV_MPU6050_REG_UP_TIME_MAX); } if (!ret) { st->powerup_count++; diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h index fcc2f3dfdfa8..243324dd78de 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h @@ -172,10 +172,15 @@ struct inv_mpu6050_state { #define INV_MPU6050_BYTES_PER_3AXIS_SENSOR 6 #define INV_MPU6050_FIFO_COUNT_BYTE 2 #define INV_MPU6050_FIFO_THRESHOLD 500 + +/* delay time in milliseconds */ #define INV_MPU6050_POWER_UP_TIME 100 #define INV_MPU6050_TEMP_UP_TIME 100 #define INV_MPU6050_SENSOR_UP_TIME 30 -#define INV_MPU6050_REG_UP_TIME 5 + +/* delay time in microseconds */ +#define INV_MPU6050_REG_UP_TIME_MIN 5000 +#define INV_MPU6050_REG_UP_TIME_MAX 10000 #define INV_MPU6050_TEMP_OFFSET 12421 #define INV_MPU6050_TEMP_SCALE 2941 |
