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/mod_devicetable.h>
   6 #include <linux/module.h>
   7 #include <linux/property.h>
   8 #include <linux/spi/spi.h>
   9 #include <linux/regmap.h>
  10 #include <linux/iio/iio.h>
  11 #include "inv_mpu_iio.h"
  12
  13 static const struct regmap_config inv_mpu_regmap_config = {
  14         .reg_bits = 8,
  15         .val_bits = 8,
  16 };
  17
  18 static int inv_mpu_i2c_disable(struct iio_dev *indio_dev)
  19 {
  20         struct inv_mpu6050_state *st = iio_priv(indio_dev);
  21         int ret = 0;
  22
  23         if (st->reg->i2c_if) {
  24                 ret = regmap_write(st->map, st->reg->i2c_if,
  25                                    INV_ICM20602_BIT_I2C_IF_DIS);
  26         } else {
  27                 st->chip_config.user_ctrl |= INV_MPU6050_BIT_I2C_IF_DIS;
  28                 ret = regmap_write(st->map, st->reg->user_ctrl,
  29                                    st->chip_config.user_ctrl);
  30         }
  31
  32         return ret;
  33 }
  34
  35 static int inv_mpu_probe(struct spi_device *spi)
  36 {
  37         const void *match;
  38         struct regmap *regmap;
  39         const struct spi_device_id *spi_id;
  40         const char *name = NULL;
  41         enum inv_devices chip_type;
  42
  43         if ((spi_id = spi_get_device_id(spi))) {
  44                 chip_type = (enum inv_devices)spi_id->driver_data;
  45                 name = spi_id->name;
  46         } else if ((match = device_get_match_data(&spi->dev))) {
  47                 chip_type = (uintptr_t)match;
  48                 name = dev_name(&spi->dev);
  49         } else {
  50                 return -ENODEV;
  51         }
  52
  53         regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
  54         if (IS_ERR(regmap)) {
  55                 dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
  56                         regmap);
  57                 return PTR_ERR(regmap);
  58         }
  59
  60         return inv_mpu_core_probe(regmap, spi->irq, name,
  61                                   inv_mpu_i2c_disable, chip_type);
  62 }
  63
  64 /*
  65  * device id table is used to identify what device can be
  66  * supported by this driver
  67  */
  68 static const struct spi_device_id inv_mpu_id[] = {
  69         {"mpu6000", INV_MPU6000},
  70         {"mpu6500", INV_MPU6500},
  71         {"mpu6515", INV_MPU6515},
  72         {"mpu6880", INV_MPU6880},
  73         {"mpu9250", INV_MPU9250},
  74         {"mpu9255", INV_MPU9255},
  75         {"icm20608", INV_ICM20608},
  76         {"icm20608d", INV_ICM20608D},
  77         {"icm20609", INV_ICM20609},
  78         {"icm20689", INV_ICM20689},
  79         {"icm20600", INV_ICM20600},
  80         {"icm20602", INV_ICM20602},
  81         {"icm20690", INV_ICM20690},
  82         {"iam20680", INV_IAM20680},
  83         {}
  84 };
  85
  86 MODULE_DEVICE_TABLE(spi, inv_mpu_id);
  87
  88 static const struct of_device_id inv_of_match[] = {
  89         {
  90                 .compatible = "invensense,mpu6000",
  91                 .data = (void *)INV_MPU6000
  92         },
  93         {
  94                 .compatible = "invensense,mpu6500",
  95                 .data = (void *)INV_MPU6500
  96         },
  97         {
  98                 .compatible = "invensense,mpu6515",
  99                 .data = (void *)INV_MPU6515
 100         },
 101         {
 102                 .compatible = "invensense,mpu6880",
 103                 .data = (void *)INV_MPU6880
 104         },
 105         {
 106                 .compatible = "invensense,mpu9250",
 107                 .data = (void *)INV_MPU9250
 108         },
 109         {
 110                 .compatible = "invensense,mpu9255",
 111                 .data = (void *)INV_MPU9255
 112         },
 113         {
 114                 .compatible = "invensense,icm20608",
 115                 .data = (void *)INV_ICM20608
 116         },
 117         {
 118                 .compatible = "invensense,icm20608d",
 119                 .data = (void *)INV_ICM20608D
 120         },
 121         {
 122                 .compatible = "invensense,icm20609",
 123                 .data = (void *)INV_ICM20609
 124         },
 125         {
 126                 .compatible = "invensense,icm20689",
 127                 .data = (void *)INV_ICM20689
 128         },
 129         {
 130                 .compatible = "invensense,icm20600",
 131                 .data = (void *)INV_ICM20600
 132         },
 133         {
 134                 .compatible = "invensense,icm20602",
 135                 .data = (void *)INV_ICM20602
 136         },
 137         {
 138                 .compatible = "invensense,icm20690",
 139                 .data = (void *)INV_ICM20690
 140         },
 141         {
 142                 .compatible = "invensense,iam20680",
 143                 .data = (void *)INV_IAM20680
 144         },
 145         { }
 146 };
 147 MODULE_DEVICE_TABLE(of, inv_of_match);
 148
 149 static const struct acpi_device_id inv_acpi_match[] = {
 150         {"INVN6000", INV_MPU6000},
 151         { },
 152 };
 153 MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
 154
 155 static struct spi_driver inv_mpu_driver = {
 156         .probe          =       inv_mpu_probe,
 157         .id_table       =       inv_mpu_id,
 158         .driver = {
 159                 .of_match_table = inv_of_match,
 160                 .acpi_match_table = inv_acpi_match,
 161                 .name   =       "inv-mpu6000-spi",
 162                 .pm     =       pm_ptr(&inv_mpu_pmops),
 163         },
 164 };
 165
 166 module_spi_driver(inv_mpu_driver);
 167
 168 MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
 169 MODULE_DESCRIPTION("Invensense device MPU6000 driver");
 170 MODULE_LICENSE("GPL");
 171 MODULE_IMPORT_NS(IIO_MPU6050);