diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-01 12:44:49 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-09-18 13:36:32 +0300 |
| commit | 12884004f17f1c469d1f9a9a9db6147694db57d0 (patch) | |
| tree | 4590ad86ddd8150fabbc5ca5f7d2fd8be89348e5 /drivers | |
| parent | 9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 (diff) | |
| download | linux-12884004f17f1c469d1f9a9a9db6147694db57d0.tar.xz | |
iio: accel: kxsd9: Support reading a mounting matrix
This adds support for the mounting matrix to the KXSD9 driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/accel/kxsd9.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index a28163b76e12..9af60ac70738 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -68,12 +68,14 @@ * struct kxsd9_state - device related storage * @dev: pointer to the parent device * @map: regmap to the device + * @orientation: mounting matrix, flipped axis etc * @regs: regulators for this device, VDD and IOVDD * @scale: the current scaling setting */ struct kxsd9_state { struct device *dev; struct regmap *map; + struct iio_mount_matrix orientation; struct regulator_bulk_data regs[2]; u8 scale; }; @@ -258,6 +260,20 @@ static const struct iio_buffer_setup_ops kxsd9_buffer_setup_ops = { .postdisable = kxsd9_buffer_postdisable, }; +static const struct iio_mount_matrix * +kxsd9_get_mount_matrix(const struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + struct kxsd9_state *st = iio_priv(indio_dev); + + return &st->orientation; +} + +static const struct iio_chan_spec_ext_info kxsd9_ext_info[] = { + IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, kxsd9_get_mount_matrix), + { }, +}; + #define KXSD9_ACCEL_CHAN(axis, index) \ { \ .type = IIO_ACCEL, \ @@ -266,6 +282,7 @@ static const struct iio_buffer_setup_ops kxsd9_buffer_setup_ops = { .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ BIT(IIO_CHAN_INFO_OFFSET), \ + .ext_info = kxsd9_ext_info, \ .address = KXSD9_REG_##axis, \ .scan_index = index, \ .scan_type = { \ @@ -403,6 +420,13 @@ int kxsd9_common_probe(struct device *dev, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->available_scan_masks = kxsd9_scan_masks; + /* Read the mounting matrix, if present */ + ret = of_iio_read_mount_matrix(dev, + "mount-matrix", + &st->orientation); + if (ret) + return ret; + /* Fetch and turn on regulators */ st->regs[0].supply = kxsd9_reg_vdd; st->regs[1].supply = kxsd9_reg_iovdd; |