// SPDX-License-Identifier: GPL-2.0-only /* * KMX61 - Kionix 6-axis Accelerometer/Magnetometer * * Copyright (c) 2014, Intel Corporation. * * IIO driver for KMX61 (7-bit I2C slave address 0x0E or 0x0F). */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/acpi.h> #include <linux/interrupt.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/events.h> #include <linux/iio/trigger.h> #include <linux/iio/buffer.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/trigger_consumer.h> #define KMX61_DRV_NAME … #define KMX61_IRQ_NAME … #define KMX61_REG_WHO_AM_I … #define KMX61_REG_INS1 … #define KMX61_REG_INS2 … /* * three 16-bit accelerometer output registers for X/Y/Z axis * we use only XOUT_L as a base register, all other addresses * can be obtained by applying an offset and are provided here * only for clarity. */ #define KMX61_ACC_XOUT_L … #define KMX61_ACC_XOUT_H … #define KMX61_ACC_YOUT_L … #define KMX61_ACC_YOUT_H … #define KMX61_ACC_ZOUT_L … #define KMX61_ACC_ZOUT_H … /* * one 16-bit temperature output register */ #define KMX61_TEMP_L … #define KMX61_TEMP_H … /* * three 16-bit magnetometer output registers for X/Y/Z axis */ #define KMX61_MAG_XOUT_L … #define KMX61_MAG_XOUT_H … #define KMX61_MAG_YOUT_L … #define KMX61_MAG_YOUT_H … #define KMX61_MAG_ZOUT_L … #define KMX61_MAG_ZOUT_H … #define KMX61_REG_INL … #define KMX61_REG_STBY … #define KMX61_REG_CTRL1 … #define KMX61_REG_CTRL2 … #define KMX61_REG_ODCNTL … #define KMX61_REG_INC1 … #define KMX61_REG_WUF_THRESH … #define KMX61_REG_WUF_TIMER … #define KMX61_ACC_STBY_BIT … #define KMX61_MAG_STBY_BIT … #define KMX61_ACT_STBY_BIT … #define KMX61_ALL_STBY … #define KMX61_REG_INS1_BIT_WUFS … #define KMX61_REG_INS2_BIT_ZP … #define KMX61_REG_INS2_BIT_ZN … #define KMX61_REG_INS2_BIT_YP … #define KMX61_REG_INS2_BIT_YN … #define KMX61_REG_INS2_BIT_XP … #define KMX61_REG_INS2_BIT_XN … #define KMX61_REG_CTRL1_GSEL_MASK … #define KMX61_REG_CTRL1_BIT_RES … #define KMX61_REG_CTRL1_BIT_DRDYE … #define KMX61_REG_CTRL1_BIT_WUFE … #define KMX61_REG_CTRL1_BIT_BTSE … #define KMX61_REG_INC1_BIT_WUFS … #define KMX61_REG_INC1_BIT_DRDYM … #define KMX61_REG_INC1_BIT_DRDYA … #define KMX61_REG_INC1_BIT_IEN … #define KMX61_ACC_ODR_SHIFT … #define KMX61_MAG_ODR_SHIFT … #define KMX61_ACC_ODR_MASK … #define KMX61_MAG_ODR_MASK … #define KMX61_OWUF_MASK … #define KMX61_DEFAULT_WAKE_THRESH … #define KMX61_DEFAULT_WAKE_DURATION … #define KMX61_SLEEP_DELAY_MS … #define KMX61_CHIP_ID … /* KMX61 devices */ #define KMX61_ACC … #define KMX61_MAG … struct kmx61_data { … }; enum kmx61_range { … }; enum kmx61_axis { … }; static const u16 kmx61_uscale_table[] = …; static const struct { … } kmx61_samp_freq_table[] = …; static const struct { … } kmx61_wake_up_odr_table[] = …; static IIO_CONST_ATTR(accel_scale_available, "0.009582 0.019163 0.038326"); static IIO_CONST_ATTR(magn_scale_available, "0.001465"); static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800"); static struct attribute *kmx61_acc_attributes[] = …; static struct attribute *kmx61_mag_attributes[] = …; static const struct attribute_group kmx61_acc_attribute_group = …; static const struct attribute_group kmx61_mag_attribute_group = …; static const struct iio_event_spec kmx61_event = …; #define KMX61_ACC_CHAN(_axis) … #define KMX61_MAG_CHAN(_axis) … static const struct iio_chan_spec kmx61_acc_channels[] = …; static const struct iio_chan_spec kmx61_mag_channels[] = …; static void kmx61_set_data(struct iio_dev *indio_dev, struct kmx61_data *data) { … } static struct kmx61_data *kmx61_get_data(struct iio_dev *indio_dev) { … } static int kmx61_convert_freq_to_bit(int val, int val2) { … } static int kmx61_convert_wake_up_odr_to_bit(int val, int val2) { … } /** * kmx61_set_mode() - set KMX61 device operating mode * @data: kmx61 device private data pointer * @mode: bitmask, indicating operating mode for @device * @device: bitmask, indicating device for which @mode needs to be set * @update: update stby bits stored in device's private @data * * For each sensor (accelerometer/magnetometer) there are two operating modes * STANDBY and OPERATION. Neither accel nor magn can be disabled independently * if they are both enabled. Internal sensors state is saved in acc_stby and * mag_stby members of driver's private @data. */ static int kmx61_set_mode(struct kmx61_data *data, u8 mode, u8 device, bool update) { … } static int kmx61_get_mode(struct kmx61_data *data, u8 *mode, u8 device) { … } static int kmx61_set_wake_up_odr(struct kmx61_data *data, int val, int val2) { … } static int kmx61_set_odr(struct kmx61_data *data, int val, int val2, u8 device) { … } static int kmx61_get_odr(struct kmx61_data *data, int *val, int *val2, u8 device) { … } static int kmx61_set_range(struct kmx61_data *data, u8 range) { … } static int kmx61_set_scale(struct kmx61_data *data, u16 uscale) { … } static int kmx61_chip_init(struct kmx61_data *data) { … } static int kmx61_setup_new_data_interrupt(struct kmx61_data *data, bool status, u8 device) { … } static int kmx61_chip_update_thresholds(struct kmx61_data *data) { … } static int kmx61_setup_any_motion_interrupt(struct kmx61_data *data, bool status) { … } /** * kmx61_set_power_state() - set power state for kmx61 @device * @data: kmx61 device private pointer * @on: power state to be set for @device * @device: bitmask indicating device for which @on state needs to be set * * Notice that when ACC power state needs to be set to ON and MAG is in * OPERATION then we know that kmx61_runtime_resume was already called * so we must set ACC OPERATION mode here. The same happens when MAG power * state needs to be set to ON and ACC is in OPERATION. */ static int kmx61_set_power_state(struct kmx61_data *data, bool on, u8 device) { … } static int kmx61_read_measurement(struct kmx61_data *data, u8 base, u8 offset) { … } static int kmx61_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int kmx61_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int kmx61_read_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2) { … } static int kmx61_write_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2) { … } static int kmx61_read_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { … } static int kmx61_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { … } static int kmx61_acc_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig) { … } static int kmx61_mag_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig) { … } static const struct iio_info kmx61_acc_info = …; static const struct iio_info kmx61_mag_info = …; static int kmx61_data_rdy_trigger_set_state(struct iio_trigger *trig, bool state) { … } static void kmx61_trig_reenable(struct iio_trigger *trig) { … } static const struct iio_trigger_ops kmx61_trigger_ops = …; static irqreturn_t kmx61_event_handler(int irq, void *private) { … } static irqreturn_t kmx61_data_rdy_trig_poll(int irq, void *private) { … } static irqreturn_t kmx61_trigger_handler(int irq, void *p) { … } static const char *kmx61_match_acpi_device(struct device *dev) { … } static struct iio_dev *kmx61_indiodev_setup(struct kmx61_data *data, const struct iio_info *info, const struct iio_chan_spec *chan, int num_channels, const char *name) { … } static struct iio_trigger *kmx61_trigger_setup(struct kmx61_data *data, struct iio_dev *indio_dev, const char *tag) { … } static int kmx61_probe(struct i2c_client *client) { … } static void kmx61_remove(struct i2c_client *client) { … } static int kmx61_suspend(struct device *dev) { … } static int kmx61_resume(struct device *dev) { … } static int kmx61_runtime_suspend(struct device *dev) { … } static int kmx61_runtime_resume(struct device *dev) { … } static const struct dev_pm_ops kmx61_pm_ops = …; static const struct acpi_device_id kmx61_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, kmx61_acpi_match); static const struct i2c_device_id kmx61_id[] = …; MODULE_DEVICE_TABLE(i2c, kmx61_id); static struct i2c_driver kmx61_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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