iio: imu: inv_icm42600: add core of new inv_icm42600 driver
Core component of a new driver for InvenSense ICM-426xx devices. It includes registers definition, main probe/setup, and device utility functions. ICM-426xx devices are latest generation of 6-axis IMU, gyroscope+accelerometer and temperature sensor. This device includes a 2K FIFO, supports I2C/I3C/SPI, and provides intelligent motion features like pedometer, tilt detection, and tap detection. Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jean-Baptiste Maneyrol
Jonathan Cameron
Родитель
8f52a15aca
Коммит
31c24c1e93
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2020 Invensense, Inc.
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*/
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#ifndef INV_ICM42600_H_
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#define INV_ICM42600_H_
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#include <linux/bits.h>
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#include <linux/bitfield.h>
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#include <linux/regmap.h>
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#include <linux/mutex.h>
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#include <linux/regulator/consumer.h>
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#include <linux/pm.h>
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#include <linux/iio/iio.h>
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enum inv_icm42600_chip {
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INV_CHIP_ICM42600,
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INV_CHIP_ICM42602,
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INV_CHIP_ICM42605,
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INV_CHIP_ICM42622,
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INV_CHIP_NB,
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};
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/* serial bus slew rates */
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enum inv_icm42600_slew_rate {
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INV_ICM42600_SLEW_RATE_20_60NS,
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INV_ICM42600_SLEW_RATE_12_36NS,
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INV_ICM42600_SLEW_RATE_6_18NS,
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INV_ICM42600_SLEW_RATE_4_12NS,
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INV_ICM42600_SLEW_RATE_2_6NS,
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INV_ICM42600_SLEW_RATE_INF_2NS,
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};
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enum inv_icm42600_sensor_mode {
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INV_ICM42600_SENSOR_MODE_OFF,
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INV_ICM42600_SENSOR_MODE_STANDBY,
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INV_ICM42600_SENSOR_MODE_LOW_POWER,
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INV_ICM42600_SENSOR_MODE_LOW_NOISE,
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INV_ICM42600_SENSOR_MODE_NB,
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};
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/* gyroscope fullscale values */
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enum inv_icm42600_gyro_fs {
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INV_ICM42600_GYRO_FS_2000DPS,
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INV_ICM42600_GYRO_FS_1000DPS,
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INV_ICM42600_GYRO_FS_500DPS,
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INV_ICM42600_GYRO_FS_250DPS,
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INV_ICM42600_GYRO_FS_125DPS,
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INV_ICM42600_GYRO_FS_62_5DPS,
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INV_ICM42600_GYRO_FS_31_25DPS,
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INV_ICM42600_GYRO_FS_15_625DPS,
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INV_ICM42600_GYRO_FS_NB,
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};
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/* accelerometer fullscale values */
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enum inv_icm42600_accel_fs {
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INV_ICM42600_ACCEL_FS_16G,
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INV_ICM42600_ACCEL_FS_8G,
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INV_ICM42600_ACCEL_FS_4G,
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INV_ICM42600_ACCEL_FS_2G,
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INV_ICM42600_ACCEL_FS_NB,
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};
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/* ODR suffixed by LN or LP are Low-Noise or Low-Power mode only */
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enum inv_icm42600_odr {
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INV_ICM42600_ODR_8KHZ_LN = 3,
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INV_ICM42600_ODR_4KHZ_LN,
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INV_ICM42600_ODR_2KHZ_LN,
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INV_ICM42600_ODR_1KHZ_LN,
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INV_ICM42600_ODR_200HZ,
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INV_ICM42600_ODR_100HZ,
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INV_ICM42600_ODR_50HZ,
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INV_ICM42600_ODR_25HZ,
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INV_ICM42600_ODR_12_5HZ,
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INV_ICM42600_ODR_6_25HZ_LP,
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INV_ICM42600_ODR_3_125HZ_LP,
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INV_ICM42600_ODR_1_5625HZ_LP,
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INV_ICM42600_ODR_500HZ,
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INV_ICM42600_ODR_NB,
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};
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enum inv_icm42600_filter {
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/* Low-Noise mode sensor data filter (3rd order filter by default) */
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INV_ICM42600_FILTER_BW_ODR_DIV_2,
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/* Low-Power mode sensor data filter (averaging) */
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INV_ICM42600_FILTER_AVG_1X = 1,
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INV_ICM42600_FILTER_AVG_16X = 6,
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};
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struct inv_icm42600_sensor_conf {
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int mode;
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int fs;
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int odr;
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int filter;
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};
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#define INV_ICM42600_SENSOR_CONF_INIT {-1, -1, -1, -1}
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struct inv_icm42600_conf {
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struct inv_icm42600_sensor_conf gyro;
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struct inv_icm42600_sensor_conf accel;
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bool temp_en;
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};
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struct inv_icm42600_suspended {
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enum inv_icm42600_sensor_mode gyro;
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enum inv_icm42600_sensor_mode accel;
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bool temp;
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};
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/**
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* struct inv_icm42600_state - driver state variables
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* @lock: lock for serializing multiple registers access.
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* @chip: chip identifier.
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* @name: chip name.
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* @map: regmap pointer.
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* @vdd_supply: VDD voltage regulator for the chip.
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* @vddio_supply: I/O voltage regulator for the chip.
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* @orientation: sensor chip orientation relative to main hardware.
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* @conf: chip sensors configurations.
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* @suspended: suspended sensors configuration.
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*/
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struct inv_icm42600_state {
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struct mutex lock;
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enum inv_icm42600_chip chip;
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const char *name;
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struct regmap *map;
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struct regulator *vdd_supply;
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struct regulator *vddio_supply;
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struct iio_mount_matrix orientation;
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struct inv_icm42600_conf conf;
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struct inv_icm42600_suspended suspended;
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};
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/* Virtual register addresses: @bank on MSB (4 upper bits), @address on LSB */
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/* Bank selection register, available in all banks */
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#define INV_ICM42600_REG_BANK_SEL 0x76
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#define INV_ICM42600_BANK_SEL_MASK GENMASK(2, 0)
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/* User bank 0 (MSB 0x00) */
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#define INV_ICM42600_REG_DEVICE_CONFIG 0x0011
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#define INV_ICM42600_DEVICE_CONFIG_SOFT_RESET BIT(0)
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#define INV_ICM42600_REG_DRIVE_CONFIG 0x0013
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#define INV_ICM42600_DRIVE_CONFIG_I2C_MASK GENMASK(5, 3)
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#define INV_ICM42600_DRIVE_CONFIG_I2C(_rate) \
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FIELD_PREP(INV_ICM42600_DRIVE_CONFIG_I2C_MASK, (_rate))
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#define INV_ICM42600_DRIVE_CONFIG_SPI_MASK GENMASK(2, 0)
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#define INV_ICM42600_DRIVE_CONFIG_SPI(_rate) \
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FIELD_PREP(INV_ICM42600_DRIVE_CONFIG_SPI_MASK, (_rate))
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#define INV_ICM42600_REG_INT_CONFIG 0x0014
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#define INV_ICM42600_INT_CONFIG_INT2_LATCHED BIT(5)
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#define INV_ICM42600_INT_CONFIG_INT2_PUSH_PULL BIT(4)
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#define INV_ICM42600_INT_CONFIG_INT2_ACTIVE_HIGH BIT(3)
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#define INV_ICM42600_INT_CONFIG_INT2_ACTIVE_LOW 0x00
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#define INV_ICM42600_INT_CONFIG_INT1_LATCHED BIT(2)
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#define INV_ICM42600_INT_CONFIG_INT1_PUSH_PULL BIT(1)
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#define INV_ICM42600_INT_CONFIG_INT1_ACTIVE_HIGH BIT(0)
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#define INV_ICM42600_INT_CONFIG_INT1_ACTIVE_LOW 0x00
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#define INV_ICM42600_REG_FIFO_CONFIG 0x0016
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#define INV_ICM42600_FIFO_CONFIG_MASK GENMASK(7, 6)
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#define INV_ICM42600_FIFO_CONFIG_BYPASS \
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FIELD_PREP(INV_ICM42600_FIFO_CONFIG_MASK, 0)
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#define INV_ICM42600_FIFO_CONFIG_STREAM \
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FIELD_PREP(INV_ICM42600_FIFO_CONFIG_MASK, 1)
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#define INV_ICM42600_FIFO_CONFIG_STOP_ON_FULL \
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FIELD_PREP(INV_ICM42600_FIFO_CONFIG_MASK, 2)
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/* all sensor data are 16 bits (2 registers wide) in big-endian */
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#define INV_ICM42600_REG_TEMP_DATA 0x001D
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#define INV_ICM42600_REG_ACCEL_DATA_X 0x001F
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#define INV_ICM42600_REG_ACCEL_DATA_Y 0x0021
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#define INV_ICM42600_REG_ACCEL_DATA_Z 0x0023
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#define INV_ICM42600_REG_GYRO_DATA_X 0x0025
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#define INV_ICM42600_REG_GYRO_DATA_Y 0x0027
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#define INV_ICM42600_REG_GYRO_DATA_Z 0x0029
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#define INV_ICM42600_DATA_INVALID -32768
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#define INV_ICM42600_REG_INT_STATUS 0x002D
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#define INV_ICM42600_INT_STATUS_UI_FSYNC BIT(6)
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#define INV_ICM42600_INT_STATUS_PLL_RDY BIT(5)
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#define INV_ICM42600_INT_STATUS_RESET_DONE BIT(4)
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#define INV_ICM42600_INT_STATUS_DATA_RDY BIT(3)
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#define INV_ICM42600_INT_STATUS_FIFO_THS BIT(2)
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#define INV_ICM42600_INT_STATUS_FIFO_FULL BIT(1)
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#define INV_ICM42600_INT_STATUS_AGC_RDY BIT(0)
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/*
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* FIFO access registers
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* FIFO count is 16 bits (2 registers) big-endian
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* FIFO data is a continuous read register to read FIFO content
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*/
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#define INV_ICM42600_REG_FIFO_COUNT 0x002E
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#define INV_ICM42600_REG_FIFO_DATA 0x0030
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#define INV_ICM42600_REG_SIGNAL_PATH_RESET 0x004B
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#define INV_ICM42600_SIGNAL_PATH_RESET_DMP_INIT_EN BIT(6)
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#define INV_ICM42600_SIGNAL_PATH_RESET_DMP_MEM_RESET BIT(5)
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#define INV_ICM42600_SIGNAL_PATH_RESET_RESET BIT(3)
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#define INV_ICM42600_SIGNAL_PATH_RESET_TMST_STROBE BIT(2)
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#define INV_ICM42600_SIGNAL_PATH_RESET_FIFO_FLUSH BIT(1)
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/* default configuration: all data big-endian and fifo count in bytes */
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#define INV_ICM42600_REG_INTF_CONFIG0 0x004C
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#define INV_ICM42600_INTF_CONFIG0_FIFO_HOLD_LAST_DATA BIT(7)
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#define INV_ICM42600_INTF_CONFIG0_FIFO_COUNT_REC BIT(6)
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#define INV_ICM42600_INTF_CONFIG0_FIFO_COUNT_ENDIAN BIT(5)
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#define INV_ICM42600_INTF_CONFIG0_SENSOR_DATA_ENDIAN BIT(4)
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#define INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK GENMASK(1, 0)
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#define INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_SPI_DIS \
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FIELD_PREP(INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK, 2)
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#define INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_I2C_DIS \
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FIELD_PREP(INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK, 3)
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#define INV_ICM42600_REG_INTF_CONFIG1 0x004D
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#define INV_ICM42600_INTF_CONFIG1_ACCEL_LP_CLK_RC BIT(3)
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#define INV_ICM42600_REG_PWR_MGMT0 0x004E
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#define INV_ICM42600_PWR_MGMT0_TEMP_DIS BIT(5)
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#define INV_ICM42600_PWR_MGMT0_IDLE BIT(4)
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#define INV_ICM42600_PWR_MGMT0_GYRO(_mode) \
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FIELD_PREP(GENMASK(3, 2), (_mode))
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#define INV_ICM42600_PWR_MGMT0_ACCEL(_mode) \
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FIELD_PREP(GENMASK(1, 0), (_mode))
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#define INV_ICM42600_REG_GYRO_CONFIG0 0x004F
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#define INV_ICM42600_GYRO_CONFIG0_FS(_fs) \
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FIELD_PREP(GENMASK(7, 5), (_fs))
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#define INV_ICM42600_GYRO_CONFIG0_ODR(_odr) \
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FIELD_PREP(GENMASK(3, 0), (_odr))
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#define INV_ICM42600_REG_ACCEL_CONFIG0 0x0050
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#define INV_ICM42600_ACCEL_CONFIG0_FS(_fs) \
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FIELD_PREP(GENMASK(7, 5), (_fs))
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#define INV_ICM42600_ACCEL_CONFIG0_ODR(_odr) \
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FIELD_PREP(GENMASK(3, 0), (_odr))
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#define INV_ICM42600_REG_GYRO_ACCEL_CONFIG0 0x0052
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#define INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(_f) \
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FIELD_PREP(GENMASK(7, 4), (_f))
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#define INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(_f) \
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FIELD_PREP(GENMASK(3, 0), (_f))
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#define INV_ICM42600_REG_TMST_CONFIG 0x0054
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#define INV_ICM42600_TMST_CONFIG_MASK GENMASK(4, 0)
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#define INV_ICM42600_TMST_CONFIG_TMST_TO_REGS_EN BIT(4)
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#define INV_ICM42600_TMST_CONFIG_TMST_RES_16US BIT(3)
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#define INV_ICM42600_TMST_CONFIG_TMST_DELTA_EN BIT(2)
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#define INV_ICM42600_TMST_CONFIG_TMST_FSYNC_EN BIT(1)
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#define INV_ICM42600_TMST_CONFIG_TMST_EN BIT(0)
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#define INV_ICM42600_REG_FIFO_CONFIG1 0x005F
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#define INV_ICM42600_FIFO_CONFIG1_RESUME_PARTIAL_RD BIT(6)
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#define INV_ICM42600_FIFO_CONFIG1_WM_GT_TH BIT(5)
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#define INV_ICM42600_FIFO_CONFIG1_TMST_FSYNC_EN BIT(3)
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#define INV_ICM42600_FIFO_CONFIG1_TEMP_EN BIT(2)
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#define INV_ICM42600_FIFO_CONFIG1_GYRO_EN BIT(1)
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#define INV_ICM42600_FIFO_CONFIG1_ACCEL_EN BIT(0)
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/* FIFO watermark is 16 bits (2 registers wide) in little-endian */
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#define INV_ICM42600_REG_FIFO_WATERMARK 0x0060
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#define INV_ICM42600_FIFO_WATERMARK_VAL(_wm) \
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cpu_to_le16((_wm) & GENMASK(11, 0))
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/* FIFO is 2048 bytes, let 12 samples for reading latency */
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#define INV_ICM42600_FIFO_WATERMARK_MAX (2048 - 12 * 16)
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#define INV_ICM42600_REG_INT_CONFIG1 0x0064
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#define INV_ICM42600_INT_CONFIG1_TPULSE_DURATION BIT(6)
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#define INV_ICM42600_INT_CONFIG1_TDEASSERT_DISABLE BIT(5)
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#define INV_ICM42600_INT_CONFIG1_ASYNC_RESET BIT(4)
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#define INV_ICM42600_REG_INT_SOURCE0 0x0065
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#define INV_ICM42600_INT_SOURCE0_UI_FSYNC_INT1_EN BIT(6)
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#define INV_ICM42600_INT_SOURCE0_PLL_RDY_INT1_EN BIT(5)
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#define INV_ICM42600_INT_SOURCE0_RESET_DONE_INT1_EN BIT(4)
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#define INV_ICM42600_INT_SOURCE0_UI_DRDY_INT1_EN BIT(3)
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#define INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN BIT(2)
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#define INV_ICM42600_INT_SOURCE0_FIFO_FULL_INT1_EN BIT(1)
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#define INV_ICM42600_INT_SOURCE0_UI_AGC_RDY_INT1_EN BIT(0)
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#define INV_ICM42600_REG_WHOAMI 0x0075
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#define INV_ICM42600_WHOAMI_ICM42600 0x40
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#define INV_ICM42600_WHOAMI_ICM42602 0x41
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#define INV_ICM42600_WHOAMI_ICM42605 0x42
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#define INV_ICM42600_WHOAMI_ICM42622 0x46
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/* User bank 1 (MSB 0x10) */
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#define INV_ICM42600_REG_SENSOR_CONFIG0 0x1003
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#define INV_ICM42600_SENSOR_CONFIG0_ZG_DISABLE BIT(5)
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#define INV_ICM42600_SENSOR_CONFIG0_YG_DISABLE BIT(4)
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#define INV_ICM42600_SENSOR_CONFIG0_XG_DISABLE BIT(3)
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#define INV_ICM42600_SENSOR_CONFIG0_ZA_DISABLE BIT(2)
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#define INV_ICM42600_SENSOR_CONFIG0_YA_DISABLE BIT(1)
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#define INV_ICM42600_SENSOR_CONFIG0_XA_DISABLE BIT(0)
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/* Timestamp value is 20 bits (3 registers) in little-endian */
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#define INV_ICM42600_REG_TMSTVAL 0x1062
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#define INV_ICM42600_TMSTVAL_MASK GENMASK(19, 0)
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#define INV_ICM42600_REG_INTF_CONFIG4 0x107A
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#define INV_ICM42600_INTF_CONFIG4_I3C_BUS_ONLY BIT(6)
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#define INV_ICM42600_INTF_CONFIG4_SPI_AP_4WIRE BIT(1)
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#define INV_ICM42600_REG_INTF_CONFIG6 0x107C
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#define INV_ICM42600_INTF_CONFIG6_MASK GENMASK(4, 0)
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#define INV_ICM42600_INTF_CONFIG6_I3C_EN BIT(4)
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#define INV_ICM42600_INTF_CONFIG6_I3C_IBI_BYTE_EN BIT(3)
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#define INV_ICM42600_INTF_CONFIG6_I3C_IBI_EN BIT(2)
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#define INV_ICM42600_INTF_CONFIG6_I3C_DDR_EN BIT(1)
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#define INV_ICM42600_INTF_CONFIG6_I3C_SDR_EN BIT(0)
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/* User bank 4 (MSB 0x40) */
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#define INV_ICM42600_REG_INT_SOURCE8 0x404F
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#define INV_ICM42600_INT_SOURCE8_FSYNC_IBI_EN BIT(5)
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#define INV_ICM42600_INT_SOURCE8_PLL_RDY_IBI_EN BIT(4)
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#define INV_ICM42600_INT_SOURCE8_UI_DRDY_IBI_EN BIT(3)
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#define INV_ICM42600_INT_SOURCE8_FIFO_THS_IBI_EN BIT(2)
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#define INV_ICM42600_INT_SOURCE8_FIFO_FULL_IBI_EN BIT(1)
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#define INV_ICM42600_INT_SOURCE8_AGC_RDY_IBI_EN BIT(0)
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#define INV_ICM42600_REG_OFFSET_USER0 0x4077
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#define INV_ICM42600_REG_OFFSET_USER1 0x4078
|
||||
#define INV_ICM42600_REG_OFFSET_USER2 0x4079
|
||||
#define INV_ICM42600_REG_OFFSET_USER3 0x407A
|
||||
#define INV_ICM42600_REG_OFFSET_USER4 0x407B
|
||||
#define INV_ICM42600_REG_OFFSET_USER5 0x407C
|
||||
#define INV_ICM42600_REG_OFFSET_USER6 0x407D
|
||||
#define INV_ICM42600_REG_OFFSET_USER7 0x407E
|
||||
#define INV_ICM42600_REG_OFFSET_USER8 0x407F
|
||||
|
||||
/* Sleep times required by the driver */
|
||||
#define INV_ICM42600_POWER_UP_TIME_MS 100
|
||||
#define INV_ICM42600_RESET_TIME_MS 1
|
||||
#define INV_ICM42600_ACCEL_STARTUP_TIME_MS 20
|
||||
#define INV_ICM42600_GYRO_STARTUP_TIME_MS 60
|
||||
#define INV_ICM42600_GYRO_STOP_TIME_MS 150
|
||||
#define INV_ICM42600_TEMP_STARTUP_TIME_MS 14
|
||||
#define INV_ICM42600_SUSPEND_DELAY_MS 2000
|
||||
|
||||
typedef int (*inv_icm42600_bus_setup)(struct inv_icm42600_state *);
|
||||
|
||||
extern const struct regmap_config inv_icm42600_regmap_config;
|
||||
extern const struct dev_pm_ops inv_icm42600_pm_ops;
|
||||
|
||||
const struct iio_mount_matrix *
|
||||
inv_icm42600_get_mount_matrix(const struct iio_dev *indio_dev,
|
||||
const struct iio_chan_spec *chan);
|
||||
|
||||
uint32_t inv_icm42600_odr_to_period(enum inv_icm42600_odr odr);
|
||||
|
||||
int inv_icm42600_set_accel_conf(struct inv_icm42600_state *st,
|
||||
struct inv_icm42600_sensor_conf *conf,
|
||||
unsigned int *sleep_ms);
|
||||
|
||||
int inv_icm42600_set_gyro_conf(struct inv_icm42600_state *st,
|
||||
struct inv_icm42600_sensor_conf *conf,
|
||||
unsigned int *sleep_ms);
|
||||
|
||||
int inv_icm42600_set_temp_conf(struct inv_icm42600_state *st, bool enable,
|
||||
unsigned int *sleep_ms);
|
||||
|
||||
int inv_icm42600_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg,
|
||||
unsigned int writeval, unsigned int *readval);
|
||||
|
||||
int inv_icm42600_core_probe(struct regmap *regmap, int chip,
|
||||
inv_icm42600_bus_setup bus_setup);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,634 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
/*
|
||||
* Copyright (C) 2020 Invensense, Inc.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
#include <linux/pm_runtime.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/iio/iio.h>
|
||||
|
||||
#include "inv_icm42600.h"
|
||||
|
||||
static const struct regmap_range_cfg inv_icm42600_regmap_ranges[] = {
|
||||
{
|
||||
.name = "user banks",
|
||||
.range_min = 0x0000,
|
||||
.range_max = 0x4FFF,
|
||||
.selector_reg = INV_ICM42600_REG_BANK_SEL,
|
||||
.selector_mask = INV_ICM42600_BANK_SEL_MASK,
|
||||
.selector_shift = 0,
|
||||
.window_start = 0,
|
||||
.window_len = 0x1000,
|
||||
},
|
||||
};
|
||||
|
||||
const struct regmap_config inv_icm42600_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = 0x4FFF,
|
||||
.ranges = inv_icm42600_regmap_ranges,
|
||||
.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(inv_icm42600_regmap_config);
|
||||
|
||||
struct inv_icm42600_hw {
|
||||
uint8_t whoami;
|
||||
const char *name;
|
||||
const struct inv_icm42600_conf *conf;
|
||||
};
|
||||
|
||||
/* chip initial default configuration */
|
||||
static const struct inv_icm42600_conf inv_icm42600_default_conf = {
|
||||
.gyro = {
|
||||
.mode = INV_ICM42600_SENSOR_MODE_OFF,
|
||||
.fs = INV_ICM42600_GYRO_FS_2000DPS,
|
||||
.odr = INV_ICM42600_ODR_50HZ,
|
||||
.filter = INV_ICM42600_FILTER_BW_ODR_DIV_2,
|
||||
},
|
||||
.accel = {
|
||||
.mode = INV_ICM42600_SENSOR_MODE_OFF,
|
||||
.fs = INV_ICM42600_ACCEL_FS_16G,
|
||||
.odr = INV_ICM42600_ODR_50HZ,
|
||||
.filter = INV_ICM42600_FILTER_BW_ODR_DIV_2,
|
||||
},
|
||||
.temp_en = false,
|
||||
};
|
||||
|
||||
static const struct inv_icm42600_hw inv_icm42600_hw[INV_CHIP_NB] = {
|
||||
[INV_CHIP_ICM42600] = {
|
||||
.whoami = INV_ICM42600_WHOAMI_ICM42600,
|
||||
.name = "icm42600",
|
||||
.conf = &inv_icm42600_default_conf,
|
||||
},
|
||||
[INV_CHIP_ICM42602] = {
|
||||
.whoami = INV_ICM42600_WHOAMI_ICM42602,
|
||||
.name = "icm42602",
|
||||
.conf = &inv_icm42600_default_conf,
|
||||
},
|
||||
[INV_CHIP_ICM42605] = {
|
||||
.whoami = INV_ICM42600_WHOAMI_ICM42605,
|
||||
.name = "icm42605",
|
||||
.conf = &inv_icm42600_default_conf,
|
||||
},
|
||||
[INV_CHIP_ICM42622] = {
|
||||
.whoami = INV_ICM42600_WHOAMI_ICM42622,
|
||||
.name = "icm42622",
|
||||
.conf = &inv_icm42600_default_conf,
|
||||
},
|
||||
};
|
||||
|
||||
const struct iio_mount_matrix *
|
||||
inv_icm42600_get_mount_matrix(const struct iio_dev *indio_dev,
|
||||
const struct iio_chan_spec *chan)
|
||||
{
|
||||
const struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
|
||||
|
||||
return &st->orientation;
|
||||
}
|
||||
|
||||
uint32_t inv_icm42600_odr_to_period(enum inv_icm42600_odr odr)
|
||||
{
|
||||
static uint32_t odr_periods[INV_ICM42600_ODR_NB] = {
|
||||
/* reserved values */
|
||||
0, 0, 0,
|
||||
/* 8kHz */
|
||||
125000,
|
||||
/* 4kHz */
|
||||
250000,
|
||||
/* 2kHz */
|
||||
500000,
|
||||
/* 1kHz */
|
||||
1000000,
|
||||
/* 200Hz */
|
||||
5000000,
|
||||
/* 100Hz */
|
||||
10000000,
|
||||
/* 50Hz */
|
||||
20000000,
|
||||
/* 25Hz */
|
||||
40000000,
|
||||
/* 12.5Hz */
|
||||
80000000,
|
||||
/* 6.25Hz */
|
||||
160000000,
|
||||
/* 3.125Hz */
|
||||
320000000,
|
||||
/* 1.5625Hz */
|
||||
640000000,
|
||||
/* 500Hz */
|
||||
2000000,
|
||||
};
|
||||
|
||||
return odr_periods[odr];
|
||||
}
|
||||
|
||||
static int inv_icm42600_set_pwr_mgmt0(struct inv_icm42600_state *st,
|
||||
enum inv_icm42600_sensor_mode gyro,
|
||||
enum inv_icm42600_sensor_mode accel,
|
||||
bool temp, unsigned int *sleep_ms)
|
||||
{
|
||||
enum inv_icm42600_sensor_mode oldgyro = st->conf.gyro.mode;
|
||||
enum inv_icm42600_sensor_mode oldaccel = st->conf.accel.mode;
|
||||
bool oldtemp = st->conf.temp_en;
|
||||
unsigned int sleepval;
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
/* if nothing changed, exit */
|
||||
if (gyro == oldgyro && accel == oldaccel && temp == oldtemp)
|
||||
return 0;
|
||||
|
||||
val = INV_ICM42600_PWR_MGMT0_GYRO(gyro) |
|
||||
INV_ICM42600_PWR_MGMT0_ACCEL(accel);
|
||||
if (!temp)
|
||||
val |= INV_ICM42600_PWR_MGMT0_TEMP_DIS;
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_PWR_MGMT0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
st->conf.gyro.mode = gyro;
|
||||
st->conf.accel.mode = accel;
|
||||
st->conf.temp_en = temp;
|
||||
|
||||
/* compute required wait time for sensors to stabilize */
|
||||
sleepval = 0;
|
||||
/* temperature stabilization time */
|
||||
if (temp && !oldtemp) {
|
||||
if (sleepval < INV_ICM42600_TEMP_STARTUP_TIME_MS)
|
||||
sleepval = INV_ICM42600_TEMP_STARTUP_TIME_MS;
|
||||
}
|
||||
/* accel startup time */
|
||||
if (accel != oldaccel && oldaccel == INV_ICM42600_SENSOR_MODE_OFF) {
|
||||
/* block any register write for at least 200 µs */
|
||||
usleep_range(200, 300);
|
||||
if (sleepval < INV_ICM42600_ACCEL_STARTUP_TIME_MS)
|
||||
sleepval = INV_ICM42600_ACCEL_STARTUP_TIME_MS;
|
||||
}
|
||||
if (gyro != oldgyro) {
|
||||
/* gyro startup time */
|
||||
if (oldgyro == INV_ICM42600_SENSOR_MODE_OFF) {
|
||||
/* block any register write for at least 200 µs */
|
||||
usleep_range(200, 300);
|
||||
if (sleepval < INV_ICM42600_GYRO_STARTUP_TIME_MS)
|
||||
sleepval = INV_ICM42600_GYRO_STARTUP_TIME_MS;
|
||||
/* gyro stop time */
|
||||
} else if (gyro == INV_ICM42600_SENSOR_MODE_OFF) {
|
||||
if (sleepval < INV_ICM42600_GYRO_STOP_TIME_MS)
|
||||
sleepval = INV_ICM42600_GYRO_STOP_TIME_MS;
|
||||
}
|
||||
}
|
||||
|
||||
/* deferred sleep value if sleep pointer is provided or direct sleep */
|
||||
if (sleep_ms)
|
||||
*sleep_ms = sleepval;
|
||||
else if (sleepval)
|
||||
msleep(sleepval);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int inv_icm42600_set_accel_conf(struct inv_icm42600_state *st,
|
||||
struct inv_icm42600_sensor_conf *conf,
|
||||
unsigned int *sleep_ms)
|
||||
{
|
||||
struct inv_icm42600_sensor_conf *oldconf = &st->conf.accel;
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
/* Sanitize missing values with current values */
|
||||
if (conf->mode < 0)
|
||||
conf->mode = oldconf->mode;
|
||||
if (conf->fs < 0)
|
||||
conf->fs = oldconf->fs;
|
||||
if (conf->odr < 0)
|
||||
conf->odr = oldconf->odr;
|
||||
if (conf->filter < 0)
|
||||
conf->filter = oldconf->filter;
|
||||
|
||||
/* set ACCEL_CONFIG0 register (accel fullscale & odr) */
|
||||
if (conf->fs != oldconf->fs || conf->odr != oldconf->odr) {
|
||||
val = INV_ICM42600_ACCEL_CONFIG0_FS(conf->fs) |
|
||||
INV_ICM42600_ACCEL_CONFIG0_ODR(conf->odr);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_ACCEL_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
oldconf->fs = conf->fs;
|
||||
oldconf->odr = conf->odr;
|
||||
}
|
||||
|
||||
/* set GYRO_ACCEL_CONFIG0 register (accel filter) */
|
||||
if (conf->filter != oldconf->filter) {
|
||||
val = INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(conf->filter) |
|
||||
INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(st->conf.gyro.filter);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_ACCEL_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
oldconf->filter = conf->filter;
|
||||
}
|
||||
|
||||
/* set PWR_MGMT0 register (accel sensor mode) */
|
||||
return inv_icm42600_set_pwr_mgmt0(st, st->conf.gyro.mode, conf->mode,
|
||||
st->conf.temp_en, sleep_ms);
|
||||
}
|
||||
|
||||
int inv_icm42600_set_gyro_conf(struct inv_icm42600_state *st,
|
||||
struct inv_icm42600_sensor_conf *conf,
|
||||
unsigned int *sleep_ms)
|
||||
{
|
||||
struct inv_icm42600_sensor_conf *oldconf = &st->conf.gyro;
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
/* sanitize missing values with current values */
|
||||
if (conf->mode < 0)
|
||||
conf->mode = oldconf->mode;
|
||||
if (conf->fs < 0)
|
||||
conf->fs = oldconf->fs;
|
||||
if (conf->odr < 0)
|
||||
conf->odr = oldconf->odr;
|
||||
if (conf->filter < 0)
|
||||
conf->filter = oldconf->filter;
|
||||
|
||||
/* set GYRO_CONFIG0 register (gyro fullscale & odr) */
|
||||
if (conf->fs != oldconf->fs || conf->odr != oldconf->odr) {
|
||||
val = INV_ICM42600_GYRO_CONFIG0_FS(conf->fs) |
|
||||
INV_ICM42600_GYRO_CONFIG0_ODR(conf->odr);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
oldconf->fs = conf->fs;
|
||||
oldconf->odr = conf->odr;
|
||||
}
|
||||
|
||||
/* set GYRO_ACCEL_CONFIG0 register (gyro filter) */
|
||||
if (conf->filter != oldconf->filter) {
|
||||
val = INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(st->conf.accel.filter) |
|
||||
INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(conf->filter);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_ACCEL_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
oldconf->filter = conf->filter;
|
||||
}
|
||||
|
||||
/* set PWR_MGMT0 register (gyro sensor mode) */
|
||||
return inv_icm42600_set_pwr_mgmt0(st, conf->mode, st->conf.accel.mode,
|
||||
st->conf.temp_en, sleep_ms);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int inv_icm42600_set_temp_conf(struct inv_icm42600_state *st, bool enable,
|
||||
unsigned int *sleep_ms)
|
||||
{
|
||||
return inv_icm42600_set_pwr_mgmt0(st, st->conf.gyro.mode,
|
||||
st->conf.accel.mode, enable,
|
||||
sleep_ms);
|
||||
}
|
||||
|
||||
int inv_icm42600_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg,
|
||||
unsigned int writeval, unsigned int *readval)
|
||||
{
|
||||
struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
|
||||
int ret;
|
||||
|
||||
mutex_lock(&st->lock);
|
||||
|
||||
if (readval)
|
||||
ret = regmap_read(st->map, reg, readval);
|
||||
else
|
||||
ret = regmap_write(st->map, reg, writeval);
|
||||
|
||||
mutex_unlock(&st->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int inv_icm42600_set_conf(struct inv_icm42600_state *st,
|
||||
const struct inv_icm42600_conf *conf)
|
||||
{
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
/* set PWR_MGMT0 register (gyro & accel sensor mode, temp enabled) */
|
||||
val = INV_ICM42600_PWR_MGMT0_GYRO(conf->gyro.mode) |
|
||||
INV_ICM42600_PWR_MGMT0_ACCEL(conf->accel.mode);
|
||||
if (!conf->temp_en)
|
||||
val |= INV_ICM42600_PWR_MGMT0_TEMP_DIS;
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_PWR_MGMT0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* set GYRO_CONFIG0 register (gyro fullscale & odr) */
|
||||
val = INV_ICM42600_GYRO_CONFIG0_FS(conf->gyro.fs) |
|
||||
INV_ICM42600_GYRO_CONFIG0_ODR(conf->gyro.odr);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* set ACCEL_CONFIG0 register (accel fullscale & odr) */
|
||||
val = INV_ICM42600_ACCEL_CONFIG0_FS(conf->accel.fs) |
|
||||
INV_ICM42600_ACCEL_CONFIG0_ODR(conf->accel.odr);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_ACCEL_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* set GYRO_ACCEL_CONFIG0 register (gyro & accel filters) */
|
||||
val = INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(conf->accel.filter) |
|
||||
INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(conf->gyro.filter);
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_ACCEL_CONFIG0, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* update internal conf */
|
||||
st->conf = *conf;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* inv_icm42600_setup() - check and setup chip
|
||||
* @st: driver internal state
|
||||
* @bus_setup: callback for setting up bus specific registers
|
||||
*
|
||||
* Returns 0 on success, a negative error code otherwise.
|
||||
*/
|
||||
static int inv_icm42600_setup(struct inv_icm42600_state *st,
|
||||
inv_icm42600_bus_setup bus_setup)
|
||||
{
|
||||
const struct inv_icm42600_hw *hw = &inv_icm42600_hw[st->chip];
|
||||
const struct device *dev = regmap_get_device(st->map);
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
/* check chip self-identification value */
|
||||
ret = regmap_read(st->map, INV_ICM42600_REG_WHOAMI, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
if (val != hw->whoami) {
|
||||
dev_err(dev, "invalid whoami %#02x expected %#02x (%s)\n",
|
||||
val, hw->whoami, hw->name);
|
||||
return -ENODEV;
|
||||
}
|
||||
st->name = hw->name;
|
||||
|
||||
/* reset to make sure previous state are not there */
|
||||
ret = regmap_write(st->map, INV_ICM42600_REG_DEVICE_CONFIG,
|
||||
INV_ICM42600_DEVICE_CONFIG_SOFT_RESET);
|
||||
if (ret)
|
||||
return ret;
|
||||
msleep(INV_ICM42600_RESET_TIME_MS);
|
||||
|
||||
ret = regmap_read(st->map, INV_ICM42600_REG_INT_STATUS, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
if (!(val & INV_ICM42600_INT_STATUS_RESET_DONE)) {
|
||||
dev_err(dev, "reset error, reset done bit not set\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* set chip bus configuration */
|
||||
ret = bus_setup(st);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* sensor data in big-endian (default) */
|
||||
ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG0,
|
||||
INV_ICM42600_INTF_CONFIG0_SENSOR_DATA_ENDIAN,
|
||||
INV_ICM42600_INTF_CONFIG0_SENSOR_DATA_ENDIAN);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return inv_icm42600_set_conf(st, hw->conf);
|
||||
}
|
||||
|
||||
static int inv_icm42600_enable_regulator_vddio(struct inv_icm42600_state *st)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = regulator_enable(st->vddio_supply);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* wait a little for supply ramp */
|
||||
usleep_range(3000, 4000);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void inv_icm42600_disable_vdd_reg(void *_data)
|
||||
{
|
||||
struct inv_icm42600_state *st = _data;
|
||||
const struct device *dev = regmap_get_device(st->map);
|
||||
int ret;
|
||||
|
||||
ret = regulator_disable(st->vdd_supply);
|
||||
if (ret)
|
||||
dev_err(dev, "failed to disable vdd error %d\n", ret);
|
||||
}
|
||||
|
||||
static void inv_icm42600_disable_vddio_reg(void *_data)
|
||||
{
|
||||
struct inv_icm42600_state *st = _data;
|
||||
const struct device *dev = regmap_get_device(st->map);
|
||||
int ret;
|
||||
|
||||
ret = regulator_disable(st->vddio_supply);
|
||||
if (ret)
|
||||
dev_err(dev, "failed to disable vddio error %d\n", ret);
|
||||
}
|
||||
|
||||
static void inv_icm42600_disable_pm(void *_data)
|
||||
{
|
||||
struct device *dev = _data;
|
||||
|
||||
pm_runtime_put_sync(dev);
|
||||
pm_runtime_disable(dev);
|
||||
}
|
||||
|
||||
int inv_icm42600_core_probe(struct regmap *regmap, int chip,
|
||||
inv_icm42600_bus_setup bus_setup)
|
||||
{
|
||||
struct device *dev = regmap_get_device(regmap);
|
||||
struct inv_icm42600_state *st;
|
||||
int ret;
|
||||
|
||||
if (chip < 0 || chip >= INV_CHIP_NB) {
|
||||
dev_err(dev, "invalid chip = %d\n", chip);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL);
|
||||
if (!st)
|
||||
return -ENOMEM;
|
||||
|
||||
dev_set_drvdata(dev, st);
|
||||
mutex_init(&st->lock);
|
||||
st->chip = chip;
|
||||
st->map = regmap;
|
||||
|
||||
ret = iio_read_mount_matrix(dev, "mount-matrix", &st->orientation);
|
||||
if (ret) {
|
||||
dev_err(dev, "failed to retrieve mounting matrix %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
st->vdd_supply = devm_regulator_get(dev, "vdd");
|
||||
if (IS_ERR(st->vdd_supply))
|
||||
return PTR_ERR(st->vdd_supply);
|
||||
|
||||
st->vddio_supply = devm_regulator_get(dev, "vddio");
|
||||
if (IS_ERR(st->vddio_supply))
|
||||
return PTR_ERR(st->vddio_supply);
|
||||
|
||||
ret = regulator_enable(st->vdd_supply);
|
||||
if (ret)
|
||||
return ret;
|
||||
msleep(INV_ICM42600_POWER_UP_TIME_MS);
|
||||
|
||||
ret = devm_add_action_or_reset(dev, inv_icm42600_disable_vdd_reg, st);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = inv_icm42600_enable_regulator_vddio(st);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = devm_add_action_or_reset(dev, inv_icm42600_disable_vddio_reg, st);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* setup chip registers */
|
||||
ret = inv_icm42600_setup(st, bus_setup);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* setup runtime power management */
|
||||
ret = pm_runtime_set_active(dev);
|
||||
if (ret)
|
||||
return ret;
|
||||
pm_runtime_get_noresume(dev);
|
||||
pm_runtime_enable(dev);
|
||||
pm_runtime_set_autosuspend_delay(dev, INV_ICM42600_SUSPEND_DELAY_MS);
|
||||
pm_runtime_use_autosuspend(dev);
|
||||
pm_runtime_put(dev);
|
||||
|
||||
return devm_add_action_or_reset(dev, inv_icm42600_disable_pm, dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(inv_icm42600_core_probe);
|
||||
|
||||
/*
|
||||
* Suspend saves sensors state and turns everything off.
|
||||
* Check first if runtime suspend has not already done the job.
|
||||
*/
|
||||
static int __maybe_unused inv_icm42600_suspend(struct device *dev)
|
||||
{
|
||||
struct inv_icm42600_state *st = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
mutex_lock(&st->lock);
|
||||
|
||||
st->suspended.gyro = st->conf.gyro.mode;
|
||||
st->suspended.accel = st->conf.accel.mode;
|
||||
st->suspended.temp = st->conf.temp_en;
|
||||
if (pm_runtime_suspended(dev)) {
|
||||
ret = 0;
|
||||
goto out_unlock;
|
||||
}
|
||||
|
||||
ret = inv_icm42600_set_pwr_mgmt0(st, INV_ICM42600_SENSOR_MODE_OFF,
|
||||
INV_ICM42600_SENSOR_MODE_OFF, false,
|
||||
NULL);
|
||||
if (ret)
|
||||
goto out_unlock;
|
||||
|
||||
regulator_disable(st->vddio_supply);
|
||||
|
||||
out_unlock:
|
||||
mutex_unlock(&st->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* System resume gets the system back on and restores the sensors state.
|
||||
* Manually put runtime power management in system active state.
|
||||
*/
|
||||
static int __maybe_unused inv_icm42600_resume(struct device *dev)
|
||||
{
|
||||
struct inv_icm42600_state *st = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
mutex_lock(&st->lock);
|
||||
|
||||
ret = inv_icm42600_enable_regulator_vddio(st);
|
||||
if (ret)
|
||||
goto out_unlock;
|
||||
|
||||
pm_runtime_disable(dev);
|
||||
pm_runtime_set_active(dev);
|
||||
pm_runtime_enable(dev);
|
||||
|
||||
/* restore sensors state */
|
||||
ret = inv_icm42600_set_pwr_mgmt0(st, st->suspended.gyro,
|
||||
st->suspended.accel,
|
||||
st->suspended.temp, NULL);
|
||||
if (ret)
|
||||
goto out_unlock;
|
||||
|
||||
out_unlock:
|
||||
mutex_unlock(&st->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Runtime suspend will turn off sensors that are enabled by iio devices. */
|
||||
static int __maybe_unused inv_icm42600_runtime_suspend(struct device *dev)
|
||||
{
|
||||
struct inv_icm42600_state *st = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
mutex_lock(&st->lock);
|
||||
|
||||
/* disable all sensors */
|
||||
ret = inv_icm42600_set_pwr_mgmt0(st, INV_ICM42600_SENSOR_MODE_OFF,
|
||||
INV_ICM42600_SENSOR_MODE_OFF, false,
|
||||
NULL);
|
||||
if (ret)
|
||||
goto error_unlock;
|
||||
|
||||
regulator_disable(st->vddio_supply);
|
||||
|
||||
error_unlock:
|
||||
mutex_unlock(&st->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Sensors are enabled by iio devices, no need to turn them back on here. */
|
||||
static int __maybe_unused inv_icm42600_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct inv_icm42600_state *st = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
mutex_lock(&st->lock);
|
||||
|
||||
ret = inv_icm42600_enable_regulator_vddio(st);
|
||||
|
||||
mutex_unlock(&st->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
const struct dev_pm_ops inv_icm42600_pm_ops = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(inv_icm42600_suspend, inv_icm42600_resume)
|
||||
SET_RUNTIME_PM_OPS(inv_icm42600_runtime_suspend,
|
||||
inv_icm42600_runtime_resume, NULL)
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(inv_icm42600_pm_ops);
|
||||
|
||||
MODULE_AUTHOR("InvenSense, Inc.");
|
||||
MODULE_DESCRIPTION("InvenSense ICM-426xx device driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
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