// SPDX-License-Identifier: GPL-2.0 /* * PNI RM3100 3-axis geomagnetic sensor driver core. * * Copyright (C) 2018 Song Qiang <[email protected]> * * User Manual available at * <https://www.pnicorp.com/download/rm3100-user-manual/> * * TODO: event generation, pm. */ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/iio/buffer.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/trigger.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/trigger_consumer.h> #include <asm/unaligned.h> #include "rm3100.h" /* Cycle Count Registers. */ #define RM3100_REG_CC_X … #define RM3100_REG_CC_Y … #define RM3100_REG_CC_Z … /* Poll Measurement Mode register. */ #define RM3100_REG_POLL … #define RM3100_POLL_X … #define RM3100_POLL_Y … #define RM3100_POLL_Z … /* Continuous Measurement Mode register. */ #define RM3100_REG_CMM … #define RM3100_CMM_START … #define RM3100_CMM_X … #define RM3100_CMM_Y … #define RM3100_CMM_Z … /* TiMe Rate Configuration register. */ #define RM3100_REG_TMRC … #define RM3100_TMRC_OFFSET … /* Result Status register. */ #define RM3100_REG_STATUS … #define RM3100_STATUS_DRDY … /* Measurement result registers. */ #define RM3100_REG_MX2 … #define RM3100_REG_MY2 … #define RM3100_REG_MZ2 … #define RM3100_W_REG_START … #define RM3100_W_REG_END … #define RM3100_R_REG_START … #define RM3100_R_REG_END … #define RM3100_V_REG_START … #define RM3100_V_REG_END … /* * This is computed by hand, is the sum of channel storage bits and padding * bits, which is 4+4+4+12=24 in here. */ #define RM3100_SCAN_BYTES … #define RM3100_CMM_AXIS_SHIFT … struct rm3100_data { … }; static const struct regmap_range rm3100_readable_ranges[] = …; const struct regmap_access_table rm3100_readable_table = …; EXPORT_SYMBOL_NS_GPL(…); static const struct regmap_range rm3100_writable_ranges[] = …; const struct regmap_access_table rm3100_writable_table = …; EXPORT_SYMBOL_NS_GPL(…); static const struct regmap_range rm3100_volatile_ranges[] = …; const struct regmap_access_table rm3100_volatile_table = …; EXPORT_SYMBOL_NS_GPL(…); static irqreturn_t rm3100_thread_fn(int irq, void *d) { … } static irqreturn_t rm3100_irq_handler(int irq, void *d) { … } static int rm3100_wait_measurement(struct rm3100_data *data) { … } static int rm3100_read_mag(struct rm3100_data *data, int idx, int *val) { … } #define RM3100_CHANNEL(axis, idx) … static const struct iio_chan_spec rm3100_channels[] = …; static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( "600 300 150 75 37 18 9 4.5 2.3 1.2 0.6 0.3 0.015 0.075" ); static struct attribute *rm3100_attributes[] = …; static const struct attribute_group rm3100_attribute_group = …; #define RM3100_SAMP_NUM … /* * Frequency : rm3100_samp_rates[][0].rm3100_samp_rates[][1]Hz. * Time between reading: rm3100_sam_rates[][2]ms. * The first one is actually 1.7ms. */ static const int rm3100_samp_rates[RM3100_SAMP_NUM][3] = …; static int rm3100_get_samp_freq(struct rm3100_data *data, int *val, int *val2) { … } static int rm3100_set_cycle_count(struct rm3100_data *data, int val) { … } static int rm3100_set_samp_freq(struct iio_dev *indio_dev, int val, int val2) { … } static int rm3100_read_raw(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, int *val, int *val2, long mask) { … } static int rm3100_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static const struct iio_info rm3100_info = …; static int rm3100_buffer_preenable(struct iio_dev *indio_dev) { … } static int rm3100_buffer_postdisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops rm3100_buffer_ops = …; static irqreturn_t rm3100_trigger_handler(int irq, void *p) { … } int rm3100_common_probe(struct device *dev, struct regmap *regmap, int irq) { … } EXPORT_SYMBOL_NS_GPL(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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