drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c

   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/of.h>
   8 #include <linux/property.h>
   9 #include <linux/spi/spi.h>
  10 #include <linux/regmap.h>
  11 #include <linux/iio/iio.h>
  12 #include "inv_mpu_iio.h"
  13
  14 static const struct regmap_config inv_mpu_regmap_config = {
  15         .reg_bits = 8,
  16         .val_bits = 8,
  17 };
  18
  19 static int inv_mpu_i2c_disable(struct iio_dev *indio_dev)
  20 {
  21         struct inv_mpu6050_state *st = iio_priv(indio_dev);
  22         int ret = 0;
  23
  24         if (st->reg->i2c_if) {
  25                 ret = regmap_write(st->map, st->reg->i2c_if,
  26                                    INV_ICM20602_BIT_I2C_IF_DIS);
  27         } else {
  28                 st->chip_config.user_ctrl |= INV_MPU6050_BIT_I2C_IF_DIS;
  29                 ret = regmap_write(st->map, st->reg->user_ctrl,
  30                                    st->chip_config.user_ctrl);
  31         }
  32
  33         return ret;
  34 }
  35
  36 static int inv_mpu_probe(struct spi_device *spi)
  37 {
  38         const void *match;
  39         struct regmap *regmap;
  40         const struct spi_device_id *spi_id;
  41         const char *name = NULL;
  42         enum inv_devices chip_type;
  43
  44         if ((spi_id = spi_get_device_id(spi))) {
  45                 chip_type = (enum inv_devices)spi_id->driver_data;
  46                 name = spi_id->name;
  47         } else if ((match = device_get_match_data(&spi->dev))) {
  48                 chip_type = (enum inv_devices)match;
  49                 name = dev_name(&spi->dev);
  50         } else {
  51                 return -ENODEV;
  52         }
  53
  54         regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
  55         if (IS_ERR(regmap)) {
  56                 dev_err(&spi->dev, "Failed to register spi regmap %d\n",
  57                         (int)PTR_ERR(regmap));
  58                 return PTR_ERR(regmap);
  59         }
  60
  61         return inv_mpu_core_probe(regmap, spi->irq, name,
  62                                   inv_mpu_i2c_disable, chip_type);
  63 }
  64
  65 /*
  66  * device id table is used to identify what device can be
  67  * supported by this driver
  68  */
  69 static const struct spi_device_id inv_mpu_id[] = {
  70         {"mpu6000", INV_MPU6000},
  71         {"mpu6500", INV_MPU6500},
  72         {"mpu6515", INV_MPU6515},
  73         {"mpu9250", INV_MPU9250},
  74         {"mpu9255", INV_MPU9255},
  75         {"icm20608", INV_ICM20608},
  76         {"icm20609", INV_ICM20609},
  77         {"icm20689", INV_ICM20689},
  78         {"icm20602", INV_ICM20602},
  79         {"icm20690", INV_ICM20690},
  80         {"iam20680", INV_IAM20680},
  81         {}
  82 };
  83
  84 MODULE_DEVICE_TABLE(spi, inv_mpu_id);
  85
  86 static const struct of_device_id inv_of_match[] = {
  87         {
  88                 .compatible = "invensense,mpu6000",
  89                 .data = (void *)INV_MPU6000
  90         },
  91         {
  92                 .compatible = "invensense,mpu6500",
  93                 .data = (void *)INV_MPU6500
  94         },
  95         {
  96                 .compatible = "invensense,mpu6515",
  97                 .data = (void *)INV_MPU6515
  98         },
  99         {
 100                 .compatible = "invensense,mpu9250",
 101                 .data = (void *)INV_MPU9250
 102         },
 103         {
 104                 .compatible = "invensense,mpu9255",
 105                 .data = (void *)INV_MPU9255
 106         },
 107         {
 108                 .compatible = "invensense,icm20608",
 109                 .data = (void *)INV_ICM20608
 110         },
 111         {
 112                 .compatible = "invensense,icm20609",
 113                 .data = (void *)INV_ICM20609
 114         },
 115         {
 116                 .compatible = "invensense,icm20689",
 117                 .data = (void *)INV_ICM20689
 118         },
 119         {
 120                 .compatible = "invensense,icm20602",
 121                 .data = (void *)INV_ICM20602
 122         },
 123         {
 124                 .compatible = "invensense,icm20690",
 125                 .data = (void *)INV_ICM20690
 126         },
 127         {
 128                 .compatible = "invensense,iam20680",
 129                 .data = (void *)INV_IAM20680
 130         },
 131         { }
 132 };
 133 MODULE_DEVICE_TABLE(of, inv_of_match);
 134
 135 static const struct acpi_device_id inv_acpi_match[] = {
 136         {"INVN6000", INV_MPU6000},
 137         { },
 138 };
 139 MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
 140
 141 static struct spi_driver inv_mpu_driver = {
 142         .probe          =       inv_mpu_probe,
 143         .id_table       =       inv_mpu_id,
 144         .driver = {
 145                 .of_match_table = inv_of_match,
 146                 .acpi_match_table = ACPI_PTR(inv_acpi_match),
 147                 .name   =       "inv-mpu6000-spi",
 148                 .pm     =       &inv_mpu_pmops,
 149         },
 150 };
 151
 152 module_spi_driver(inv_mpu_driver);
 153
 154 MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
 155 MODULE_DESCRIPTION("Invensense device MPU6000 driver");
 156 MODULE_LICENSE("GPL");