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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BMC150_ACCEL_H_
#define _BMC150_ACCEL_H_
#include <linux/atomic.h>
#include <linux/iio/iio.h>
#include <linux/mutex.h>
#include <linux/regulator/consumer.h>
#include <linux/workqueue.h>
struct regmap;
struct i2c_client;
struct bmc150_accel_chip_info;
struct bmc150_accel_interrupt_info;
/*
* We can often guess better than "UNKNOWN" based on the device IDs
* but unfortunately this information is not always accurate. There are some
* devices where ACPI firmware specifies an ID like "BMA250E" when the device
* actually has a BMA222E. The driver attempts to detect those by reading the
* chip ID from the registers but this information is not always enough either.
*
* Therefore, this enum should be only used when the chip ID detection is not
* enough and we can be reasonably sure that the device IDs are reliable
* in practice (e.g. for device tree platforms).
*/
enum bmc150_type {
BOSCH_UNKNOWN,
BOSCH_BMC156,
};
struct bmc150_accel_interrupt {
const struct bmc150_accel_interrupt_info *info;
atomic_t users;
};
struct bmc150_accel_trigger {
struct bmc150_accel_data *data;
struct iio_trigger *indio_trig;
int (*setup)(struct bmc150_accel_trigger *t, bool state);
int intr;
bool enabled;
};
enum bmc150_accel_interrupt_id {
BMC150_ACCEL_INT_DATA_READY,
BMC150_ACCEL_INT_ANY_MOTION,
BMC150_ACCEL_INT_WATERMARK,
BMC150_ACCEL_INTERRUPTS,
};
enum bmc150_accel_trigger_id {
BMC150_ACCEL_TRIGGER_DATA_READY,
BMC150_ACCEL_TRIGGER_ANY_MOTION,
BMC150_ACCEL_TRIGGERS,
};
struct bmc150_accel_data {
struct regmap *regmap;
struct regulator_bulk_data regulators[2];
struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
struct mutex mutex;
u8 fifo_mode, watermark;
s16 buffer[8];
/*
* Ensure there is sufficient space and correct alignment for
* the timestamp if enabled
*/
struct {
__le16 channels[3];
s64 ts __aligned(8);
} scan;
u8 bw_bits;
u32 slope_dur;
u32 slope_thres;
u32 range;
int ev_enable_state;
int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */
const struct bmc150_accel_chip_info *chip_info;
enum bmc150_type type;
struct i2c_client *second_device;
void (*resume_callback)(struct device *dev);
struct delayed_work resume_work;
struct iio_mount_matrix orientation;
};
int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
enum bmc150_type type, const char *name,
bool block_supported);
void bmc150_accel_core_remove(struct device *dev);
extern const struct dev_pm_ops bmc150_accel_pm_ops;
extern const struct regmap_config bmc150_regmap_conf;
#endif /* _BMC150_ACCEL_H_ */
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