diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/kxsd9.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index dc0bea7cbf4f..6a1e67723d0c 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -55,6 +55,8 @@ struct kxsd9_state { /* reverse order */ static const int kxsd9_micro_scales[4] = { 47853, 35934, 23927, 11978 }; +#define KXSD9_ZERO_G_OFFSET -2048 + static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro) { int ret, i; @@ -82,19 +84,6 @@ error_ret: return ret; } -static int kxsd9_read(struct iio_dev *indio_dev, u8 address) -{ - int ret; - struct kxsd9_state *st = iio_priv(indio_dev); - __be16 raw_val; - - ret = regmap_bulk_read(st->map, address, &raw_val, sizeof(raw_val)); - if (ret) - return ret; - /* Only 12 bits are valid */ - return be16_to_cpu(raw_val) & 0xfff0; -} - static IIO_CONST_ATTR(accel_scale_available, KXSD9_SCALE_2G " " KXSD9_SCALE_4G " " @@ -131,13 +120,24 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev, int ret = -EINVAL; struct kxsd9_state *st = iio_priv(indio_dev); unsigned int regval; + __be16 raw_val; + u16 nval; switch (mask) { case IIO_CHAN_INFO_RAW: - ret = kxsd9_read(indio_dev, chan->address); - if (ret < 0) + ret = regmap_bulk_read(st->map, chan->address, &raw_val, + sizeof(raw_val)); + if (ret) goto error_ret; - *val = ret; + nval = be16_to_cpu(raw_val); + /* Only 12 bits are valid */ + nval >>= 4; + *val = nval; + ret = IIO_VAL_INT; + break; + case IIO_CHAN_INFO_OFFSET: + /* This has a bias of -2048 */ + *val = KXSD9_ZERO_G_OFFSET; ret = IIO_VAL_INT; break; case IIO_CHAN_INFO_SCALE: @@ -161,7 +161,8 @@ error_ret: .modified = 1, \ .channel2 = IIO_MOD_##axis, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_OFFSET), \ .address = KXSD9_REG_##axis, \ } |