LXR linux/drivers/iio/accel/bmc150-accel.h

   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 IDs
  18 * but unfortunately this information is not always accurate. There are some
  19 * devices where ACPI firmware specifies an ID like "BMA250E" when the device
  20 * actually has a BMA222E. The driver attempts to detect those by reading the
  21 * 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 not
  24 * enough and we can be reasonably sure that the device IDs are reliable
  25 * 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 for
  68         * the timestamp if enabled
  69         */
  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);
  91int 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