diff options
Diffstat (limited to 'drivers/iio/imu')
| -rw-r--r-- | drivers/iio/imu/adis16400_core.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c index 1bbe5ee..8551fde 100644 --- a/drivers/iio/imu/adis16400_core.c +++ b/drivers/iio/imu/adis16400_core.c @@ -53,16 +53,15 @@ static int adis16334_get_freq(struct adis16400_state *st) t >>= ADIS16334_RATE_DIV_SHIFT; - return (8192 >> t) / 10; + return 819200 >> t; } static int adis16334_set_freq(struct adis16400_state *st, unsigned int freq) { unsigned int t; - freq *= 10; - if (freq < 8192) - t = ilog2(8192 / freq); + if (freq < 819200) + t = ilog2(819200 / freq); else t = 0; @@ -84,7 +83,7 @@ static int adis16400_get_freq(struct adis16400_state *st) if (ret < 0) return ret; - sps = (t & ADIS16400_SMPL_PRD_TIME_BASE) ? 53 : 1638; + sps = (t & ADIS16400_SMPL_PRD_TIME_BASE) ? 52851 : 1638404; sps /= (t & ADIS16400_SMPL_PRD_DIV_MASK) + 1; return sps; @@ -94,7 +93,7 @@ static int adis16400_set_freq(struct adis16400_state *st, unsigned int freq) { unsigned int t; - t = 1638 / freq; + t = 1638404 / freq; if (t > 0) t--; t &= ADIS16400_SMPL_PRD_DIV_MASK; @@ -119,7 +118,7 @@ static ssize_t adis16400_read_frequency(struct device *dev, if (ret < 0) return ret; - return sprintf(buf, "%d\n", ret); + return sprintf(buf, "%d.%.3d\n", ret / 1000, ret % 1000); } static const unsigned adis16400_3db_divisors[] = { @@ -158,14 +157,16 @@ static ssize_t adis16400_write_frequency(struct device *dev, { struct iio_dev *indio_dev = dev_to_iio_dev(dev); struct adis16400_state *st = iio_priv(indio_dev); - long val; + int i, f, val; int ret; - ret = kstrtol(buf, 10, &val); + ret = iio_str_to_fixpoint(buf, 100, &i, &f); if (ret) return ret; - if (val == 0) + val = i * 1000 + f; + + if (val <= 0) return -EINVAL; mutex_lock(&indio_dev->mlock); @@ -281,7 +282,8 @@ static int adis16400_write_raw(struct iio_dev *indio_dev, return sps; } - ret = adis16400_set_filter(indio_dev, sps, val); + ret = adis16400_set_filter(indio_dev, sps, + val * 1000 + val2 / 1000); mutex_unlock(&indio_dev->mlock); return ret; default: @@ -355,9 +357,11 @@ static int adis16400_read_raw(struct iio_dev *indio_dev, return ret; } ret = st->variant->get_freq(st); - if (ret >= 0) - *val = ret / adis16400_3db_divisors[val16 & 0x07]; - *val2 = 0; + if (ret >= 0) { + ret /= adis16400_3db_divisors[val16 & 0x07]; + *val = ret / 1000; + *val2 = (ret % 1000) * 1000; + } mutex_unlock(&indio_dev->mlock); if (ret < 0) return ret; |