// SPDX-License-Identifier: GPL-2.0-only /* * 3-axis accelerometer driver supporting many Bosch-Sensortec chips * Copyright (c) 2014, Intel Corporation. */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/acpi.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/property.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/buffer.h> #include <linux/iio/events.h> #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include "bmc150-accel.h" #define BMC150_ACCEL_DRV_NAME … #define BMC150_ACCEL_IRQ_NAME … #define BMC150_ACCEL_REG_CHIP_ID … #define BMC150_ACCEL_REG_INT_STATUS_2 … #define BMC150_ACCEL_ANY_MOTION_MASK … #define BMC150_ACCEL_ANY_MOTION_BIT_X … #define BMC150_ACCEL_ANY_MOTION_BIT_Y … #define BMC150_ACCEL_ANY_MOTION_BIT_Z … #define BMC150_ACCEL_ANY_MOTION_BIT_SIGN … #define BMC150_ACCEL_REG_PMU_LPW … #define BMC150_ACCEL_PMU_MODE_MASK … #define BMC150_ACCEL_PMU_MODE_SHIFT … #define BMC150_ACCEL_PMU_BIT_SLEEP_DUR_MASK … #define BMC150_ACCEL_PMU_BIT_SLEEP_DUR_SHIFT … #define BMC150_ACCEL_REG_PMU_RANGE … #define BMC150_ACCEL_DEF_RANGE_2G … #define BMC150_ACCEL_DEF_RANGE_4G … #define BMC150_ACCEL_DEF_RANGE_8G … #define BMC150_ACCEL_DEF_RANGE_16G … /* Default BW: 125Hz */ #define BMC150_ACCEL_REG_PMU_BW … #define BMC150_ACCEL_DEF_BW … #define BMC150_ACCEL_REG_RESET … #define BMC150_ACCEL_RESET_VAL … #define BMC150_ACCEL_REG_INT_MAP_0 … #define BMC150_ACCEL_INT_MAP_0_BIT_INT1_SLOPE … #define BMC150_ACCEL_REG_INT_MAP_1 … #define BMC150_ACCEL_INT_MAP_1_BIT_INT1_DATA … #define BMC150_ACCEL_INT_MAP_1_BIT_INT1_FWM … #define BMC150_ACCEL_INT_MAP_1_BIT_INT1_FFULL … #define BMC150_ACCEL_INT_MAP_1_BIT_INT2_FFULL … #define BMC150_ACCEL_INT_MAP_1_BIT_INT2_FWM … #define BMC150_ACCEL_INT_MAP_1_BIT_INT2_DATA … #define BMC150_ACCEL_REG_INT_MAP_2 … #define BMC150_ACCEL_INT_MAP_2_BIT_INT2_SLOPE … #define BMC150_ACCEL_REG_INT_RST_LATCH … #define BMC150_ACCEL_INT_MODE_LATCH_RESET … #define BMC150_ACCEL_INT_MODE_LATCH_INT … #define BMC150_ACCEL_INT_MODE_NON_LATCH_INT … #define BMC150_ACCEL_REG_INT_EN_0 … #define BMC150_ACCEL_INT_EN_BIT_SLP_X … #define BMC150_ACCEL_INT_EN_BIT_SLP_Y … #define BMC150_ACCEL_INT_EN_BIT_SLP_Z … #define BMC150_ACCEL_REG_INT_EN_1 … #define BMC150_ACCEL_INT_EN_BIT_DATA_EN … #define BMC150_ACCEL_INT_EN_BIT_FFULL_EN … #define BMC150_ACCEL_INT_EN_BIT_FWM_EN … #define BMC150_ACCEL_REG_INT_OUT_CTRL … #define BMC150_ACCEL_INT_OUT_CTRL_INT1_LVL … #define BMC150_ACCEL_INT_OUT_CTRL_INT2_LVL … #define BMC150_ACCEL_REG_INT_5 … #define BMC150_ACCEL_SLOPE_DUR_MASK … #define BMC150_ACCEL_REG_INT_6 … #define BMC150_ACCEL_SLOPE_THRES_MASK … /* Slope duration in terms of number of samples */ #define BMC150_ACCEL_DEF_SLOPE_DURATION … /* in terms of multiples of g's/LSB, based on range */ #define BMC150_ACCEL_DEF_SLOPE_THRESHOLD … #define BMC150_ACCEL_REG_XOUT_L … #define BMC150_ACCEL_MAX_STARTUP_TIME_MS … /* Sleep Duration values */ #define BMC150_ACCEL_SLEEP_500_MICRO … #define BMC150_ACCEL_SLEEP_1_MS … #define BMC150_ACCEL_SLEEP_2_MS … #define BMC150_ACCEL_SLEEP_4_MS … #define BMC150_ACCEL_SLEEP_6_MS … #define BMC150_ACCEL_SLEEP_10_MS … #define BMC150_ACCEL_SLEEP_25_MS … #define BMC150_ACCEL_SLEEP_50_MS … #define BMC150_ACCEL_SLEEP_100_MS … #define BMC150_ACCEL_SLEEP_500_MS … #define BMC150_ACCEL_SLEEP_1_SEC … #define BMC150_ACCEL_REG_TEMP … #define BMC150_ACCEL_TEMP_CENTER_VAL … #define BMC150_ACCEL_AXIS_TO_REG(axis) … #define BMC150_AUTO_SUSPEND_DELAY_MS … #define BMC150_ACCEL_REG_FIFO_STATUS … #define BMC150_ACCEL_REG_FIFO_CONFIG0 … #define BMC150_ACCEL_REG_FIFO_CONFIG1 … #define BMC150_ACCEL_REG_FIFO_DATA … #define BMC150_ACCEL_FIFO_LENGTH … enum bmc150_accel_axis { … }; enum bmc150_power_modes { … }; struct bmc150_scale_info { … }; struct bmc150_accel_chip_info { … }; static const struct { … } bmc150_accel_samp_freq_table[] = …; static __maybe_unused const struct { … } bmc150_accel_sample_upd_time[] = …; static const struct { … } bmc150_accel_sleep_value_table[] = …; const struct regmap_config bmc150_regmap_conf = …; EXPORT_SYMBOL_NS_GPL(…); static int bmc150_accel_set_mode(struct bmc150_accel_data *data, enum bmc150_power_modes mode, int dur_us) { … } static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val, int val2) { … } static int bmc150_accel_update_slope(struct bmc150_accel_data *data) { … } static int bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t, bool state) { … } static int bmc150_accel_get_bw(struct bmc150_accel_data *data, int *val, int *val2) { … } #ifdef CONFIG_PM static int bmc150_accel_get_startup_times(struct bmc150_accel_data *data) { … } static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on) { … } #else static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on) { return 0; } #endif #ifdef CONFIG_ACPI /* * Support for getting accelerometer information from BOSC0200 ACPI nodes. * * There are 2 variants of the BOSC0200 ACPI node. Some 2-in-1s with 360 degree * hinges declare 2 I2C ACPI-resources for 2 accelerometers, 1 in the display * and 1 in the base of the 2-in-1. On these 2-in-1s the ROMS ACPI object * contains the mount-matrix for the sensor in the display and ROMK contains * the mount-matrix for the sensor in the base. On devices using a single * sensor there is a ROTM ACPI object which contains the mount-matrix. * * Here is an incomplete list of devices known to use 1 of these setups: * * Yoga devices with 2 accelerometers using ROMS + ROMK for the mount-matrices: * Lenovo Thinkpad Yoga 11e 3th gen * Lenovo Thinkpad Yoga 11e 4th gen * * Tablets using a single accelerometer using ROTM for the mount-matrix: * Chuwi Hi8 Pro (CWI513) * Chuwi Vi8 Plus (CWI519) * Chuwi Hi13 * Irbis TW90 * Jumper EZpad mini 3 * Onda V80 plus * Predia Basic Tablet */ static bool bmc150_apply_bosc0200_acpi_orientation(struct device *dev, struct iio_mount_matrix *orientation) { … } static bool bmc150_apply_dual250e_acpi_orientation(struct device *dev, struct iio_mount_matrix *orientation) { … } static bool bmc150_apply_acpi_orientation(struct device *dev, struct iio_mount_matrix *orientation) { … } #else static bool bmc150_apply_acpi_orientation(struct device *dev, struct iio_mount_matrix *orientation) { return false; } #endif struct bmc150_accel_interrupt_info { … }; static const struct bmc150_accel_interrupt_info bmc150_accel_interrupts_int1[BMC150_ACCEL_INTERRUPTS] = …; static const struct bmc150_accel_interrupt_info bmc150_accel_interrupts_int2[BMC150_ACCEL_INTERRUPTS] = …; static void bmc150_accel_interrupts_setup(struct iio_dev *indio_dev, struct bmc150_accel_data *data, int irq) { … } static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i, bool state) { … } static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val) { … } static int bmc150_accel_get_temp(struct bmc150_accel_data *data, int *val) { … } static int bmc150_accel_get_axis(struct bmc150_accel_data *data, struct iio_chan_spec const *chan, int *val) { … } static int bmc150_accel_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int bmc150_accel_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int bmc150_accel_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 bmc150_accel_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 bmc150_accel_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 bmc150_accel_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 bmc150_accel_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig) { … } static ssize_t bmc150_accel_get_fifo_watermark(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bmc150_accel_get_fifo_state(struct device *dev, struct device_attribute *attr, char *buf) { … } static const struct iio_mount_matrix * bmc150_accel_get_mount_matrix(const struct iio_dev *indio_dev, const struct iio_chan_spec *chan) { … } static const struct iio_chan_spec_ext_info bmc150_accel_ext_info[] = …; IIO_STATIC_CONST_DEVICE_ATTR(…); IIO_STATIC_CONST_DEVICE_ATTR(…); static IIO_DEVICE_ATTR(hwfifo_enabled, S_IRUGO, bmc150_accel_get_fifo_state, NULL, 0); static IIO_DEVICE_ATTR(hwfifo_watermark, S_IRUGO, bmc150_accel_get_fifo_watermark, NULL, 0); static const struct iio_dev_attr *bmc150_accel_fifo_attributes[] = …; static int bmc150_accel_set_watermark(struct iio_dev *indio_dev, unsigned val) { … } /* * We must read at least one full frame in one burst, otherwise the rest of the * frame data is discarded. */ static int bmc150_accel_fifo_transfer(struct bmc150_accel_data *data, char *buffer, int samples) { … } static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev, unsigned samples, bool irq) { … } static int bmc150_accel_fifo_flush(struct iio_dev *indio_dev, unsigned samples) { … } static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( "15.620000 31.260000 62.50000 125 250 500 1000 2000"); static struct attribute *bmc150_accel_attributes[] = …; static const struct attribute_group bmc150_accel_attrs_group = …; static const struct iio_event_spec bmc150_accel_event = …; #define BMC150_ACCEL_CHANNEL(_axis, bits) … #define BMC150_ACCEL_CHANNELS(bits) … static const struct iio_chan_spec bma222e_accel_channels[] = …; static const struct iio_chan_spec bma250e_accel_channels[] = …; static const struct iio_chan_spec bmc150_accel_channels[] = …; static const struct iio_chan_spec bma280_accel_channels[] = …; /* * The range for the Bosch sensors is typically +-2g/4g/8g/16g, distributed * over the amount of bits (see above). The scale table can be calculated using * (range / 2^bits) * g = (range / 2^bits) * 9.80665 m/s^2 * e.g. for +-2g and 12 bits: (4 / 2^12) * 9.80665 m/s^2 = 0.0095768... m/s^2 * Multiply 10^6 and round to get the values listed below. */ static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = …; static const struct iio_info bmc150_accel_info = …; static const struct iio_info bmc150_accel_info_fifo = …; static const unsigned long bmc150_accel_scan_masks[] = …; static irqreturn_t bmc150_accel_trigger_handler(int irq, void *p) { … } static void bmc150_accel_trig_reen(struct iio_trigger *trig) { … } static int bmc150_accel_trigger_set_state(struct iio_trigger *trig, bool state) { … } static const struct iio_trigger_ops bmc150_accel_trigger_ops = …; static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev) { … } static irqreturn_t bmc150_accel_irq_thread_handler(int irq, void *private) { … } static irqreturn_t bmc150_accel_irq_handler(int irq, void *private) { … } static const struct { … } bmc150_accel_triggers[BMC150_ACCEL_TRIGGERS] = …; static void bmc150_accel_unregister_triggers(struct bmc150_accel_data *data, int from) { … } static int bmc150_accel_triggers_setup(struct iio_dev *indio_dev, struct bmc150_accel_data *data) { … } #define BMC150_ACCEL_FIFO_MODE_STREAM … #define BMC150_ACCEL_FIFO_MODE_FIFO … #define BMC150_ACCEL_FIFO_MODE_BYPASS … static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data) { … } static int bmc150_accel_buffer_preenable(struct iio_dev *indio_dev) { … } static int bmc150_accel_buffer_postenable(struct iio_dev *indio_dev) { … } static int bmc150_accel_buffer_predisable(struct iio_dev *indio_dev) { … } static int bmc150_accel_buffer_postdisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops bmc150_accel_buffer_ops = …; static int bmc150_accel_chip_init(struct bmc150_accel_data *data) { … } int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, enum bmc150_type type, const char *name, bool block_supported) { … } EXPORT_SYMBOL_NS_GPL(…); void bmc150_accel_core_remove(struct device *dev) { … } EXPORT_SYMBOL_NS_GPL(…); #ifdef CONFIG_PM_SLEEP static int bmc150_accel_suspend(struct device *dev) { … } static int bmc150_accel_resume(struct device *dev) { … } #endif #ifdef CONFIG_PM static int bmc150_accel_runtime_suspend(struct device *dev) { … } static int bmc150_accel_runtime_resume(struct device *dev) { … } #endif const struct dev_pm_ops bmc150_accel_pm_ops = …; EXPORT_SYMBOL_NS_GPL(…); MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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