// SPDX-License-Identifier: GPL-2.0-only /* * 3-axis accelerometer driver for MXC4005XC Memsic sensor * * Copyright (c) 2014, Intel Corporation. */ #include <linux/delay.h> #include <linux/module.h> #include <linux/i2c.h> #include <linux/iio/iio.h> #include <linux/mod_devicetable.h> #include <linux/regmap.h> #include <linux/iio/sysfs.h> #include <linux/iio/trigger.h> #include <linux/iio/buffer.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/trigger_consumer.h> #define MXC4005_DRV_NAME … #define MXC4005_IRQ_NAME … #define MXC4005_REGMAP_NAME … #define MXC4005_REG_XOUT_UPPER … #define MXC4005_REG_XOUT_LOWER … #define MXC4005_REG_YOUT_UPPER … #define MXC4005_REG_YOUT_LOWER … #define MXC4005_REG_ZOUT_UPPER … #define MXC4005_REG_ZOUT_LOWER … #define MXC4005_REG_INT_MASK0 … #define MXC4005_REG_INT_MASK1 … #define MXC4005_REG_INT_MASK1_BIT_DRDYE … #define MXC4005_REG_INT_CLR0 … #define MXC4005_REG_INT_CLR1 … #define MXC4005_REG_INT_CLR1_BIT_DRDYC … #define MXC4005_REG_INT_CLR1_SW_RST … #define MXC4005_REG_CONTROL … #define MXC4005_REG_CONTROL_MASK_FSR … #define MXC4005_CONTROL_FSR_SHIFT … #define MXC4005_REG_DEVICE_ID … /* Datasheet does not specify a reset time, this is a conservative guess */ #define MXC4005_RESET_TIME_US … enum mxc4005_axis { … }; enum mxc4005_range { … }; struct mxc4005_data { … }; /* * MXC4005 can operate in the following ranges: * +/- 2G, 4G, 8G (the default +/-2G) * * (2 + 2) * 9.81 / (2^12 - 1) = 0.009582 * (4 + 4) * 9.81 / (2^12 - 1) = 0.019164 * (8 + 8) * 9.81 / (2^12 - 1) = 0.038329 */ static const struct { … } mxc4005_scale_table[] = …; static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019164 0.038329"); static struct attribute *mxc4005_attributes[] = …; static const struct attribute_group mxc4005_attrs_group = …; static bool mxc4005_is_readable_reg(struct device *dev, unsigned int reg) { … } static bool mxc4005_is_writeable_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config mxc4005_regmap_config = …; static int mxc4005_read_xyz(struct mxc4005_data *data) { … } static int mxc4005_read_axis(struct mxc4005_data *data, unsigned int addr) { … } static int mxc4005_read_scale(struct mxc4005_data *data) { … } static int mxc4005_set_scale(struct mxc4005_data *data, int val) { … } static int mxc4005_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int mxc4005_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static const struct iio_mount_matrix * mxc4005_get_mount_matrix(const struct iio_dev *indio_dev, const struct iio_chan_spec *chan) { … } static const struct iio_chan_spec_ext_info mxc4005_ext_info[] = …; static const struct iio_info mxc4005_info = …; static const unsigned long mxc4005_scan_masks[] = …; #define MXC4005_CHANNEL(_axis, _addr) … static const struct iio_chan_spec mxc4005_channels[] = …; static irqreturn_t mxc4005_trigger_handler(int irq, void *private) { … } static void mxc4005_clr_intr(struct mxc4005_data *data) { … } static int mxc4005_set_trigger_state(struct iio_trigger *trig, bool state) { … } static void mxc4005_trigger_reen(struct iio_trigger *trig) { … } static const struct iio_trigger_ops mxc4005_trigger_ops = …; static int mxc4005_chip_init(struct mxc4005_data *data) { … } static int mxc4005_probe(struct i2c_client *client) { … } static int mxc4005_suspend(struct device *dev) { … } static int mxc4005_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(mxc4005_pm_ops, mxc4005_suspend, mxc4005_resume); static const struct acpi_device_id mxc4005_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, mxc4005_acpi_match); static const struct of_device_id mxc4005_of_match[] = …; MODULE_DEVICE_TABLE(of, mxc4005_of_match); static const struct i2c_device_id mxc4005_id[] = …; MODULE_DEVICE_TABLE(i2c, mxc4005_id); static struct i2c_driver mxc4005_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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