On Mon, 27 May 2024 05:00:18 -0300
Val Packett <val@xxxxxxxxxxxx> wrote:
> Allow using the mount-matrix device tree property to align the
> accelerometer relative to the whole device.
>
> Signed-off-by: Val Packett <val@xxxxxxxxxxxx>
Applied to the togreg branch of iio.git. Initially pushed out as testing
to let 0-day see if it can find anything we missed
Thanks,
Jonathan
> ---
> drivers/iio/accel/mma7660.c | 50 ++++++++++++++++++++++++++-----------
> 1 file changed, 35 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/iio/accel/mma7660.c b/drivers/iio/accel/mma7660.c
> index 260cbceaa..9d23f28d5 100644
> --- a/drivers/iio/accel/mma7660.c
> +++ b/drivers/iio/accel/mma7660.c
> @@ -38,21 +38,6 @@
>
> static const int mma7660_nscale = 467142857;
>
> -#define MMA7660_CHANNEL(reg, axis) { \
> - .type = IIO_ACCEL, \
> - .address = reg, \
> - .modified = 1, \
> - .channel2 = IIO_MOD_##axis, \
> - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
> - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
> -}
> -
> -static const struct iio_chan_spec mma7660_channels[] = {
> - MMA7660_CHANNEL(MMA7660_REG_XOUT, X),
> - MMA7660_CHANNEL(MMA7660_REG_YOUT, Y),
> - MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z),
> -};
> -
> enum mma7660_mode {
> MMA7660_MODE_STANDBY,
> MMA7660_MODE_ACTIVE
> @@ -62,6 +47,21 @@ struct mma7660_data {
> struct i2c_client *client;
> struct mutex lock;
> enum mma7660_mode mode;
> + struct iio_mount_matrix orientation;
> +};
> +
> +static const struct iio_mount_matrix *
> +mma7660_get_mount_matrix(const struct iio_dev *indio_dev,
> + const struct iio_chan_spec *chan)
> +{
> + struct mma7660_data *data = iio_priv(indio_dev);
> +
> + return &data->orientation;
> +}
> +
> +static const struct iio_chan_spec_ext_info mma7660_ext_info[] = {
> + IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, mma7660_get_mount_matrix),
> + { }
> };
>
> static IIO_CONST_ATTR(in_accel_scale_available, MMA7660_SCALE_AVAIL);
> @@ -75,6 +75,22 @@ static const struct attribute_group mma7660_attribute_group = {
> .attrs = mma7660_attributes
> };
>
> +#define MMA7660_CHANNEL(reg, axis) { \
> + .type = IIO_ACCEL, \
> + .address = reg, \
> + .modified = 1, \
> + .channel2 = IIO_MOD_##axis, \
> + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
> + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
> + .ext_info = mma7660_ext_info, \
> +}
> +
> +static const struct iio_chan_spec mma7660_channels[] = {
> + MMA7660_CHANNEL(MMA7660_REG_XOUT, X),
> + MMA7660_CHANNEL(MMA7660_REG_YOUT, Y),
> + MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z),
> +};
> +
> static int mma7660_set_mode(struct mma7660_data *data,
> enum mma7660_mode mode)
> {
> @@ -187,6 +203,10 @@ static int mma7660_probe(struct i2c_client *client)
> mutex_init(&data->lock);
> data->mode = MMA7660_MODE_STANDBY;
>
> + ret = iio_read_mount_matrix(&client->dev, &data->orientation);
> + if (ret)
> + return ret;
> +
> indio_dev->info = &mma7660_info;
> indio_dev->name = MMA7660_DRIVER_NAME;
> indio_dev->modes = INDIO_DIRECT_MODE;
