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Commit 12884004 authored by Linus Walleij's avatar Linus Walleij Committed by Jonathan Cameron
Browse files

iio: accel: kxsd9: Support reading a mounting matrix 



This adds support for the mounting matrix to the KXSD9 driver.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 9a9a369d

drivers/iio/accel/kxsd9.c

+24 −0
Original line number Diff line number Diff line
@@ -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;