Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iio: accel: mma7660: add mount-matrix support
Allow using the mount-matrix device tree property to align the
accelerometer relative to the whole device.
Signed-off-by: Val Packett <val@packett.cool>
Link: https://lore.kernel.org/r/20240527080043.2709-1-val@packett.cool
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by
Val Packett
and committed by
Jonathan Cameron
f4bed1ce
c4ec8ded
+35
-15
+35
-15
drivers/iio/accel/mma7660.c
+35
-15
drivers/iio/accel/mma7660.c
···
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static const int mma7660_nscale = 467142857;
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#define MMA7660_CHANNEL(reg, axis) { \
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.type = IIO_ACCEL, \
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.address = reg, \
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.modified = 1, \
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.channel2 = IIO_MOD_##axis, \
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
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}
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static const struct iio_chan_spec mma7660_channels[] = {
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MMA7660_CHANNEL(MMA7660_REG_XOUT, X),
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MMA7660_CHANNEL(MMA7660_REG_YOUT, Y),
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MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z),
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};
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enum mma7660_mode {
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MMA7660_MODE_STANDBY,
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MMA7660_MODE_ACTIVE
···
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struct i2c_client *client;
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struct mutex lock;
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enum mma7660_mode mode;
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struct iio_mount_matrix orientation;
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};
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static const struct iio_mount_matrix *
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mma7660_get_mount_matrix(const struct iio_dev *indio_dev,
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const struct iio_chan_spec *chan)
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{
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struct mma7660_data *data = iio_priv(indio_dev);
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return &data->orientation;
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}
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static const struct iio_chan_spec_ext_info mma7660_ext_info[] = {
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IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, mma7660_get_mount_matrix),
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{ }
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};
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static IIO_CONST_ATTR(in_accel_scale_available, MMA7660_SCALE_AVAIL);
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static const struct attribute_group mma7660_attribute_group = {
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.attrs = mma7660_attributes
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};
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#define MMA7660_CHANNEL(reg, axis) { \
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.type = IIO_ACCEL, \
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.address = reg, \
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.modified = 1, \
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.channel2 = IIO_MOD_##axis, \
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
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.ext_info = mma7660_ext_info, \
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}
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static const struct iio_chan_spec mma7660_channels[] = {
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MMA7660_CHANNEL(MMA7660_REG_XOUT, X),
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MMA7660_CHANNEL(MMA7660_REG_YOUT, Y),
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MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z),
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};
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static int mma7660_set_mode(struct mma7660_data *data,
···
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i2c_set_clientdata(client, indio_dev);
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mutex_init(&data->lock);
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data->mode = MMA7660_MODE_STANDBY;
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ret = iio_read_mount_matrix(&client->dev, &data->orientation);
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if (ret)
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return ret;
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indio_dev->info = &mma7660_info;
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indio_dev->name = MMA7660_DRIVER_NAME;