/* 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/types.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;
        int irq;
        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];
                aligned_s64 ts;
        } 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_ */