/* SPDX-License-Identifier: GPL-2.0-only */
/*
* STMicroelectronics st_lsm6dsx sensor driver
*
* Copyright 2016 STMicroelectronics Inc.
*
* Lorenzo Bianconi <[email protected]>
* Denis Ciocca <[email protected]>
*/
#ifndef ST_LSM6DSX_H
#define ST_LSM6DSX_H
#include <linux/device.h>
#include <linux/iio/iio.h>
#include <linux/regulator/consumer.h>
#define ST_LSM6DS3_DEV_NAME "lsm6ds3"
#define ST_LSM6DS3H_DEV_NAME "lsm6ds3h"
#define ST_LSM6DSL_DEV_NAME "lsm6dsl"
#define ST_LSM6DSM_DEV_NAME "lsm6dsm"
#define ST_ISM330DLC_DEV_NAME "ism330dlc"
#define ST_LSM6DSO_DEV_NAME "lsm6dso"
#define ST_ASM330LHH_DEV_NAME "asm330lhh"
#define ST_LSM6DSOX_DEV_NAME "lsm6dsox"
#define ST_LSM6DSR_DEV_NAME "lsm6dsr"
#define ST_LSM6DS3TRC_DEV_NAME "lsm6ds3tr-c"
#define ST_ISM330DHCX_DEV_NAME "ism330dhcx"
#define ST_LSM9DS1_DEV_NAME "lsm9ds1-imu"
#define ST_LSM6DS0_DEV_NAME "lsm6ds0"
#define ST_LSM6DSRX_DEV_NAME "lsm6dsrx"
#define ST_LSM6DST_DEV_NAME "lsm6dst"
#define ST_LSM6DSOP_DEV_NAME "lsm6dsop"
#define ST_ASM330LHHX_DEV_NAME "asm330lhhx"
#define ST_LSM6DSTX_DEV_NAME "lsm6dstx"
#define ST_LSM6DSV_DEV_NAME "lsm6dsv"
#define ST_LSM6DSV16X_DEV_NAME "lsm6dsv16x"
#define ST_LSM6DSO16IS_DEV_NAME "lsm6dso16is"
#define ST_ISM330IS_DEV_NAME "ism330is"
#define ST_ASM330LHB_DEV_NAME "asm330lhb"
#define ST_ASM330LHHXG1_DEV_NAME "asm330lhhxg1"
enum st_lsm6dsx_hw_id {
ST_LSM6DS3_ID = 1,
ST_LSM6DS3H_ID,
ST_LSM6DSL_ID,
ST_LSM6DSM_ID,
ST_ISM330DLC_ID,
ST_LSM6DSO_ID,
ST_ASM330LHH_ID,
ST_LSM6DSOX_ID,
ST_LSM6DSR_ID,
ST_LSM6DS3TRC_ID,
ST_ISM330DHCX_ID,
ST_LSM9DS1_ID,
ST_LSM6DS0_ID,
ST_LSM6DSRX_ID,
ST_LSM6DST_ID,
ST_LSM6DSOP_ID,
ST_ASM330LHHX_ID,
ST_LSM6DSTX_ID,
ST_LSM6DSV_ID,
ST_LSM6DSV16X_ID,
ST_LSM6DSO16IS_ID,
ST_ISM330IS_ID,
ST_ASM330LHB_ID,
ST_ASM330LHHXG1_ID,
ST_LSM6DSX_MAX_ID,
};
#define ST_LSM6DSX_BUFF_SIZE 512
#define ST_LSM6DSX_CHAN_SIZE 2
#define ST_LSM6DSX_SAMPLE_SIZE 6
#define ST_LSM6DSX_TAG_SIZE 1
#define ST_LSM6DSX_TAGGED_SAMPLE_SIZE (ST_LSM6DSX_SAMPLE_SIZE + \
ST_LSM6DSX_TAG_SIZE)
#define ST_LSM6DSX_MAX_WORD_LEN ((32 / ST_LSM6DSX_SAMPLE_SIZE) * \
ST_LSM6DSX_SAMPLE_SIZE)
#define ST_LSM6DSX_MAX_TAGGED_WORD_LEN ((32 / ST_LSM6DSX_TAGGED_SAMPLE_SIZE) \
* ST_LSM6DSX_TAGGED_SAMPLE_SIZE)
#define ST_LSM6DSX_SHIFT_VAL(val, mask) (((val) << __ffs(mask)) & (mask))
#define ST_LSM6DSX_CHANNEL_ACC(chan_type, addr, mod, scan_idx) \
{ \
.type = chan_type, \
.address = addr, \
.modified = 1, \
.channel2 = mod, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
.scan_index = scan_idx, \
.scan_type = { \
.sign = 's', \
.realbits = 16, \
.storagebits = 16, \
.endianness = IIO_LE, \
}, \
.event_spec = &st_lsm6dsx_event, \
.ext_info = st_lsm6dsx_ext_info, \
.num_event_specs = 1, \
}
#define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx) \
{ \
.type = chan_type, \
.address = addr, \
.modified = 1, \
.channel2 = mod, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
.scan_index = scan_idx, \
.scan_type = { \
.sign = 's', \
.realbits = 16, \
.storagebits = 16, \
.endianness = IIO_LE, \
}, \
.ext_info = st_lsm6dsx_ext_info, \
}
struct st_lsm6dsx_reg {
u8 addr;
u8 mask;
};
struct st_lsm6dsx_sensor;
struct st_lsm6dsx_hw;
struct st_lsm6dsx_odr {
u32 milli_hz;
u8 val;
};
#define ST_LSM6DSX_ODR_LIST_SIZE 8
struct st_lsm6dsx_odr_table_entry {
struct st_lsm6dsx_reg reg;
struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE];
int odr_len;
};
struct st_lsm6dsx_samples_to_discard {
struct {
u32 milli_hz;
u16 samples;
} val[ST_LSM6DSX_ODR_LIST_SIZE];
};
struct st_lsm6dsx_fs {
u32 gain;
u8 val;
};
#define ST_LSM6DSX_FS_LIST_SIZE 4
struct st_lsm6dsx_fs_table_entry {
struct st_lsm6dsx_reg reg;
struct st_lsm6dsx_fs fs_avl[ST_LSM6DSX_FS_LIST_SIZE];
int fs_len;
};
/**
* struct st_lsm6dsx_fifo_ops - ST IMU FIFO settings
* @update_fifo: Update FIFO configuration callback.
* @read_fifo: Read FIFO callback.
* @fifo_th: FIFO threshold register info (addr + mask).
* @fifo_diff: FIFO diff status register info (addr + mask).
* @max_size: Sensor max fifo length in FIFO words.
* @th_wl: FIFO threshold word length.
*/
struct st_lsm6dsx_fifo_ops {
int (*update_fifo)(struct st_lsm6dsx_sensor *sensor, bool enable);
int (*read_fifo)(struct st_lsm6dsx_hw *hw);
struct {
u8 addr;
u16 mask;
} fifo_th;
struct {
u8 addr;
u16 mask;
} fifo_diff;
u16 max_size;
u8 th_wl;
};
/**
* struct st_lsm6dsx_hw_ts_settings - ST IMU hw timer settings
* @timer_en: Hw timer enable register info (addr + mask).
* @hr_timer: Hw timer resolution register info (addr + mask).
* @fifo_en: Hw timer FIFO enable register info (addr + mask).
* @decimator: Hw timer FIFO decimator register info (addr + mask).
* @freq_fine: Difference in % of ODR with respect to the typical.
*/
struct st_lsm6dsx_hw_ts_settings {
struct st_lsm6dsx_reg timer_en;
struct st_lsm6dsx_reg hr_timer;
struct st_lsm6dsx_reg fifo_en;
struct st_lsm6dsx_reg decimator;
u8 freq_fine;
};
/**
* struct st_lsm6dsx_shub_settings - ST IMU hw i2c controller settings
* @page_mux: register page mux info (addr + mask).
* @master_en: master config register info (addr + mask).
* @pullup_en: i2c controller pull-up register info (addr + mask).
* @aux_sens: aux sensor register info (addr + mask).
* @wr_once: write_once register info (addr + mask).
* @emb_func: embedded function register info (addr + mask).
* @num_ext_dev: max number of slave devices.
* @shub_out: sensor hub first output register info.
* @slv0_addr: slave0 address in secondary page.
* @dw_slv0_addr: slave0 write register address in secondary page.
* @batch_en: Enable/disable FIFO batching.
* @pause: controller pause value.
*/
struct st_lsm6dsx_shub_settings {
struct st_lsm6dsx_reg page_mux;
struct {
bool sec_page;
u8 addr;
u8 mask;
} master_en;
struct {
bool sec_page;
u8 addr;
u8 mask;
} pullup_en;
struct st_lsm6dsx_reg aux_sens;
struct st_lsm6dsx_reg wr_once;
struct st_lsm6dsx_reg emb_func;
u8 num_ext_dev;
struct {
bool sec_page;
u8 addr;
} shub_out;
u8 slv0_addr;
u8 dw_slv0_addr;
u8 batch_en;
u8 pause;
};
struct st_lsm6dsx_event_settings {
struct st_lsm6dsx_reg enable_reg;
struct st_lsm6dsx_reg wakeup_reg;
u8 wakeup_src_reg;
u8 wakeup_src_status_mask;
u8 wakeup_src_z_mask;
u8 wakeup_src_y_mask;
u8 wakeup_src_x_mask;
};
enum st_lsm6dsx_ext_sensor_id {
ST_LSM6DSX_ID_MAGN,
};
/**
* struct st_lsm6dsx_ext_dev_settings - i2c controller slave settings
* @i2c_addr: I2c slave address list.
* @wai: Wai address info.
* @id: external sensor id.
* @odr_table: Output data rate of the sensor [Hz].
* @fs_table: Configured sensor sensitivity table depending on full scale.
* @temp_comp: Temperature compensation register info (addr + mask).
* @pwr_table: Power on register info (addr + mask).
* @off_canc: Offset cancellation register info (addr + mask).
* @bdu: Block data update register info (addr + mask).
* @out: Output register info.
*/
struct st_lsm6dsx_ext_dev_settings {
u8 i2c_addr[2];
struct {
u8 addr;
u8 val;
} wai;
enum st_lsm6dsx_ext_sensor_id id;
struct st_lsm6dsx_odr_table_entry odr_table;
struct st_lsm6dsx_fs_table_entry fs_table;
struct st_lsm6dsx_reg temp_comp;
struct {
struct st_lsm6dsx_reg reg;
u8 off_val;
u8 on_val;
} pwr_table;
struct st_lsm6dsx_reg off_canc;
struct st_lsm6dsx_reg bdu;
struct {
u8 addr;
u8 len;
} out;
};
/**
* struct st_lsm6dsx_settings - ST IMU sensor settings
* @reset: register address for reset.
* @boot: register address for boot.
* @bdu: register address for Block Data Update.
* @id: List of hw id/device name supported by the driver configuration.
* @channels: IIO channels supported by the device.
* @irq_config: interrupts related registers.
* @drdy_mask: register info for data-ready mask (addr + mask).
* @odr_table: Hw sensors odr table (Hz + val).
* @samples_to_discard: Number of samples to discard for filters settling time.
* @fs_table: Hw sensors gain table (gain + val).
* @decimator: List of decimator register info (addr + mask).
* @batch: List of FIFO batching register info (addr + mask).
* @fifo_ops: Sensor hw FIFO parameters.
* @ts_settings: Hw timer related settings.
* @shub_settings: i2c controller related settings.
*/
struct st_lsm6dsx_settings {
struct st_lsm6dsx_reg reset;
struct st_lsm6dsx_reg boot;
struct st_lsm6dsx_reg bdu;
struct {
enum st_lsm6dsx_hw_id hw_id;
const char *name;
u8 wai;
} id[ST_LSM6DSX_MAX_ID];
struct {
const struct iio_chan_spec *chan;
int len;
} channels[2];
struct {
struct st_lsm6dsx_reg irq1;
struct st_lsm6dsx_reg irq2;
struct st_lsm6dsx_reg irq1_func;
struct st_lsm6dsx_reg irq2_func;
struct st_lsm6dsx_reg lir;
struct st_lsm6dsx_reg clear_on_read;
struct st_lsm6dsx_reg hla;
struct st_lsm6dsx_reg od;
} irq_config;
struct st_lsm6dsx_reg drdy_mask;
struct st_lsm6dsx_odr_table_entry odr_table[2];
struct st_lsm6dsx_samples_to_discard samples_to_discard[2];
struct st_lsm6dsx_fs_table_entry fs_table[2];
struct st_lsm6dsx_reg decimator[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_reg batch[ST_LSM6DSX_MAX_ID];
struct st_lsm6dsx_fifo_ops fifo_ops;
struct st_lsm6dsx_hw_ts_settings ts_settings;
struct st_lsm6dsx_shub_settings shub_settings;
struct st_lsm6dsx_event_settings event_settings;
};
enum st_lsm6dsx_sensor_id {
ST_LSM6DSX_ID_GYRO,
ST_LSM6DSX_ID_ACC,
ST_LSM6DSX_ID_EXT0,
ST_LSM6DSX_ID_EXT1,
ST_LSM6DSX_ID_EXT2,
ST_LSM6DSX_ID_MAX,
};
enum st_lsm6dsx_fifo_mode {
ST_LSM6DSX_FIFO_BYPASS = 0x0,
ST_LSM6DSX_FIFO_CONT = 0x6,
};
/**
* struct st_lsm6dsx_sensor - ST IMU sensor instance
* @name: Sensor name.
* @id: Sensor identifier.
* @hw: Pointer to instance of struct st_lsm6dsx_hw.
* @gain: Configured sensor sensitivity.
* @odr: Output data rate of the sensor [Hz].
* @samples_to_discard: Number of samples to discard for filters settling time.
* @watermark: Sensor watermark level.
* @decimator: Sensor decimation factor.
* @sip: Number of samples in a given pattern.
* @ts_ref: Sensor timestamp reference for hw one.
* @ext_info: Sensor settings if it is connected to i2c controller
*/
struct st_lsm6dsx_sensor {
char name[32];
enum st_lsm6dsx_sensor_id id;
struct st_lsm6dsx_hw *hw;
u32 gain;
u32 odr;
u16 samples_to_discard;
u16 watermark;
u8 decimator;
u8 sip;
s64 ts_ref;
struct {
const struct st_lsm6dsx_ext_dev_settings *settings;
u32 slv_odr;
u8 addr;
} ext_info;
};
/**
* struct st_lsm6dsx_hw - ST IMU MEMS hw instance
* @dev: Pointer to instance of struct device (I2C or SPI).
* @regmap: Register map of the device.
* @irq: Device interrupt line (I2C or SPI).
* @fifo_lock: Mutex to prevent concurrent access to the hw FIFO.
* @conf_lock: Mutex to prevent concurrent FIFO configuration update.
* @page_lock: Mutex to prevent concurrent memory page configuration.
* @suspend_mask: Suspended sensor bitmask.
* @enable_mask: Enabled sensor bitmask.
* @fifo_mask: Enabled hw FIFO bitmask.
* @ts_gain: Hw timestamp rate after internal calibration.
* @ts_sip: Total number of timestamp samples in a given pattern.
* @sip: Total number of samples (acc/gyro/ts) in a given pattern.
* @buff: Device read buffer.
* @irq_routing: pointer to interrupt routing configuration.
* @event_threshold: wakeup event threshold.
* @enable_event: enabled event bitmask.
* @iio_devs: Pointers to acc/gyro iio_dev instances.
* @settings: Pointer to the specific sensor settings in use.
* @orientation: sensor chip orientation relative to main hardware.
* @scan: Temporary buffers used to align data before iio_push_to_buffers()
*/
struct st_lsm6dsx_hw {
struct device *dev;
struct regmap *regmap;
int irq;
struct mutex fifo_lock;
struct mutex conf_lock;
struct mutex page_lock;
u8 suspend_mask;
u8 enable_mask;
u8 fifo_mask;
s64 ts_gain;
u8 ts_sip;
u8 sip;
const struct st_lsm6dsx_reg *irq_routing;
u8 event_threshold;
u8 enable_event;
u8 *buff;
struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX];
const struct st_lsm6dsx_settings *settings;
struct iio_mount_matrix orientation;
/* Ensure natural alignment of buffer elements */
struct {
__le16 channels[3];
s64 ts __aligned(8);
} scan[ST_LSM6DSX_ID_MAX];
};
static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_EITHER,
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_ENABLE)
};
static __maybe_unused const unsigned long st_lsm6dsx_available_scan_masks[] = {
0x7, 0x0,
};
extern const struct dev_pm_ops st_lsm6dsx_pm_ops;
int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
struct regmap *regmap);
int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor,
bool enable);
int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw);
int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val);
int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor,
u16 watermark);
int st_lsm6dsx_update_fifo(struct st_lsm6dsx_sensor *sensor, bool enable);
int st_lsm6dsx_flush_fifo(struct st_lsm6dsx_hw *hw);
int st_lsm6dsx_resume_fifo(struct st_lsm6dsx_hw *hw);
int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name);
int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable);
int st_lsm6dsx_shub_read_output(struct st_lsm6dsx_hw *hw, u8 *data, int len);
int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable);
static inline int
st_lsm6dsx_update_bits_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
unsigned int mask, unsigned int val)
{
int err;
mutex_lock(&hw->page_lock);
err = regmap_update_bits(hw->regmap, addr, mask, val);
mutex_unlock(&hw->page_lock);
return err;
}
static inline int
st_lsm6dsx_read_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
void *val, unsigned int len)
{
int err;
mutex_lock(&hw->page_lock);
err = regmap_bulk_read(hw->regmap, addr, val, len);
mutex_unlock(&hw->page_lock);
return err;
}
static inline int
st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
unsigned int val)
{
int err;
mutex_lock(&hw->page_lock);
err = regmap_write(hw->regmap, addr, val);
mutex_unlock(&hw->page_lock);
return err;
}
static inline const struct iio_mount_matrix *
st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
const struct iio_chan_spec *chan)
{
struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
struct st_lsm6dsx_hw *hw = sensor->hw;
return &hw->orientation;
}
static inline int
st_lsm6dsx_device_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable)
{
if (sensor->id == ST_LSM6DSX_ID_EXT0 ||
sensor->id == ST_LSM6DSX_ID_EXT1 ||
sensor->id == ST_LSM6DSX_ID_EXT2)
return st_lsm6dsx_shub_set_enable(sensor, enable);
return st_lsm6dsx_sensor_set_enable(sensor, enable);
}
static const
struct iio_chan_spec_ext_info __maybe_unused st_lsm6dsx_ext_info[] = {
IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
{ }
};
#endif /* ST_LSM6DSX_H */
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