diff options
Diffstat (limited to 'drivers/iio/accel/adxl372.c')
| -rw-r--r-- | drivers/iio/accel/adxl372.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c index 6281e4a11632..fdaaa58ce68f 100644 --- a/drivers/iio/accel/adxl372.c +++ b/drivers/iio/accel/adxl372.c @@ -202,6 +202,10 @@ static const int adxl372_samp_freq_tbl[5] = { 400, 800, 1600, 3200, 6400, }; +static const int adxl372_bw_freq_tbl[5] = { + 200, 400, 800, 1600, 3200, +}; + struct adxl372_axis_lookup { unsigned int bits; enum adxl372_fifo_format fifo_format; @@ -224,7 +228,8 @@ static const struct adxl372_axis_lookup adxl372_axis_lookup_table[] = { .channel2 = IIO_MOD_##axis, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ - BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ + BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \ .scan_index = index, \ .scan_type = { \ .sign = 's', \ @@ -648,6 +653,9 @@ static int adxl372_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_SAMP_FREQ: *val = adxl372_samp_freq_tbl[st->odr]; return IIO_VAL_INT; + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + *val = adxl372_bw_freq_tbl[st->bw]; + return IIO_VAL_INT; } return -EINVAL; @@ -658,7 +666,7 @@ static int adxl372_write_raw(struct iio_dev *indio_dev, int val, int val2, long info) { struct adxl372_state *st = iio_priv(indio_dev); - int odr_index, ret; + int odr_index, bw_index, ret; switch (info) { case IIO_CHAN_INFO_SAMP_FREQ: @@ -690,11 +698,34 @@ static int adxl372_write_raw(struct iio_dev *indio_dev, ret = adxl372_set_bandwidth(st, odr_index); return ret; + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + bw_index = adxl372_find_closest_match(adxl372_bw_freq_tbl, + ARRAY_SIZE(adxl372_bw_freq_tbl), + val); + return adxl372_set_bandwidth(st, bw_index); default: return -EINVAL; } } +static ssize_t adxl372_show_filter_freq_avail(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct adxl372_state *st = iio_priv(indio_dev); + int i; + size_t len = 0; + + for (i = 0; i <= st->odr; i++) + len += scnprintf(buf + len, PAGE_SIZE - len, + "%d ", adxl372_bw_freq_tbl[i]); + + buf[len - 1] = '\n'; + + return len; +} + static ssize_t adxl372_get_fifo_enabled(struct device *dev, struct device_attribute *attr, char *buf) @@ -838,9 +869,12 @@ static const struct iio_trigger_ops adxl372_trigger_ops = { }; static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("400 800 1600 3200 6400"); +static IIO_DEVICE_ATTR(in_accel_filter_low_pass_3db_frequency_available, + 0444, adxl372_show_filter_freq_avail, NULL, 0); static struct attribute *adxl372_attributes[] = { &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &iio_dev_attr_in_accel_filter_low_pass_3db_frequency_available.dev_attr.attr, NULL, }; |