96 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BMC150_ACCEL_H_3#define _BMC150_ACCEL_H_4 5#include <linux/atomic.h>6#include <linux/iio/iio.h>7#include <linux/mutex.h>8#include <linux/regulator/consumer.h>9#include <linux/workqueue.h>10 11struct regmap;12struct i2c_client;13struct bmc150_accel_chip_info;14struct bmc150_accel_interrupt_info;15 16/*17 * We can often guess better than "UNKNOWN" based on the device IDs18 * but unfortunately this information is not always accurate. There are some19 * devices where ACPI firmware specifies an ID like "BMA250E" when the device20 * actually has a BMA222E. The driver attempts to detect those by reading the21 * chip ID from the registers but this information is not always enough either.22 *23 * Therefore, this enum should be only used when the chip ID detection is not24 * enough and we can be reasonably sure that the device IDs are reliable25 * in practice (e.g. for device tree platforms).26 */27enum bmc150_type {28 BOSCH_UNKNOWN,29 BOSCH_BMC156,30};31 32struct bmc150_accel_interrupt {33 const struct bmc150_accel_interrupt_info *info;34 atomic_t users;35};36 37struct bmc150_accel_trigger {38 struct bmc150_accel_data *data;39 struct iio_trigger *indio_trig;40 int (*setup)(struct bmc150_accel_trigger *t, bool state);41 int intr;42 bool enabled;43};44 45enum bmc150_accel_interrupt_id {46 BMC150_ACCEL_INT_DATA_READY,47 BMC150_ACCEL_INT_ANY_MOTION,48 BMC150_ACCEL_INT_WATERMARK,49 BMC150_ACCEL_INTERRUPTS,50};51 52enum bmc150_accel_trigger_id {53 BMC150_ACCEL_TRIGGER_DATA_READY,54 BMC150_ACCEL_TRIGGER_ANY_MOTION,55 BMC150_ACCEL_TRIGGERS,56};57 58struct bmc150_accel_data {59 struct regmap *regmap;60 struct regulator_bulk_data regulators[2];61 struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];62 struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];63 struct mutex mutex;64 u8 fifo_mode, watermark;65 s16 buffer[8];66 /*67 * Ensure there is sufficient space and correct alignment for68 * the timestamp if enabled69 */70 struct {71 __le16 channels[3];72 s64 ts __aligned(8);73 } scan;74 u8 bw_bits;75 u32 slope_dur;76 u32 slope_thres;77 u32 range;78 int ev_enable_state;79 int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */80 const struct bmc150_accel_chip_info *chip_info;81 enum bmc150_type type;82 struct i2c_client *second_device;83 void (*resume_callback)(struct device *dev);84 struct delayed_work resume_work;85 struct iio_mount_matrix orientation;86};87 88int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,89 enum bmc150_type type, const char *name,90 bool block_supported);91void bmc150_accel_core_remove(struct device *dev);92extern const struct dev_pm_ops bmc150_accel_pm_ops;93extern const struct regmap_config bmc150_regmap_conf;94 95#endif /* _BMC150_ACCEL_H_ */96