LXR linux/drivers/iio/imu/inv_mpu6050/inv_mpu

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3* Copyright (C) 2015 Intel Corporation Inc.
   4*/
   5#include <linux/module.h>
   6#include <linux/acpi.h>
   7#include <linux/spi/spi.h>
   8#include <linux/regmap.h>
   9#include <linux/iio/iio.h>
  10#include "inv_mpu_iio.h"
  11
  12static const struct regmap_config inv_mpu_regmap_config = {
  13        .reg_bits = 8,
  14        .val_bits = 8,
  15};
  16
  17static int inv_mpu_i2c_disable(struct iio_dev *indio_dev)
  18{
  19        struct inv_mpu6050_state *st = iio_priv(indio_dev);
  20        int ret = 0;
  21
  22        ret = inv_mpu6050_set_power_itg(st, true);
  23        if (ret)
  24                return ret;
  25
  26        if (st->reg->i2c_if) {
  27                ret = regmap_write(st->map, st->reg->i2c_if,
  28                                   INV_ICM20602_BIT_I2C_IF_DIS);
  29        } else {
  30                st->chip_config.user_ctrl |= INV_MPU6050_BIT_I2C_IF_DIS;
  31                ret = regmap_write(st->map, st->reg->user_ctrl,
  32                                   st->chip_config.user_ctrl);
  33        }
  34        if (ret) {
  35                inv_mpu6050_set_power_itg(st, false);
  36                return ret;
  37        }
  38
  39        return inv_mpu6050_set_power_itg(st, false);
  40}
  41
  42static int inv_mpu_probe(struct spi_device *spi)
  43{
  44        struct regmap *regmap;
  45        const struct spi_device_id *spi_id;
  46        const struct acpi_device_id *acpi_id;
  47        const char *name = NULL;
  48        enum inv_devices chip_type;
  49
  50        if ((spi_id = spi_get_device_id(spi))) {
  51                chip_type = (enum inv_devices)spi_id->driver_data;
  52                name = spi_id->name;
  53        } else if ((acpi_id = acpi_match_device(spi->dev.driver->acpi_match_table, &spi->dev))) {
  54                chip_type = (enum inv_devices)acpi_id->driver_data;
  55        } else {
  56                return -ENODEV;
  57        }
  58
  59        regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
  60        if (IS_ERR(regmap)) {
  61                dev_err(&spi->dev, "Failed to register spi regmap %d\n",
  62                        (int)PTR_ERR(regmap));
  63                return PTR_ERR(regmap);
  64        }
  65
  66        return inv_mpu_core_probe(regmap, spi->irq, name,
  67                                  inv_mpu_i2c_disable, chip_type);
  68}
  69
  70/*
  71 * device id table is used to identify what device can be
  72 * supported by this driver
  73 */
  74static const struct spi_device_id inv_mpu_id[] = {
  75        {"mpu6000", INV_MPU6000},
  76        {"mpu6500", INV_MPU6500},
  77        {"mpu9150", INV_MPU9150},
  78        {"mpu9250", INV_MPU9250},
  79        {"mpu9255", INV_MPU9255},
  80        {"icm20608", INV_ICM20608},
  81        {"icm20602", INV_ICM20602},
  82        {}
  83};
  84
  85MODULE_DEVICE_TABLE(spi, inv_mpu_id);
  86
  87static const struct acpi_device_id inv_acpi_match[] = {
  88        {"INVN6000", INV_MPU6000},
  89        { },
  90};
  91MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
  92
  93static struct spi_driver inv_mpu_driver = {
  94        .probe          =       inv_mpu_probe,
  95        .id_table       =       inv_mpu_id,
  96        .driver = {
  97                .acpi_match_table = ACPI_PTR(inv_acpi_match),
  98                .name   =       "inv-mpu6000-spi",
  99                .pm     =       &inv_mpu_pmops,
 100        },
 101};
 102
 103module_spi_driver(inv_mpu_driver);
 104
 105MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
 106MODULE_DESCRIPTION("Invensense device MPU6000 driver");
 107MODULE_LICENSE("GPL");
 108