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 12 static const struct regmap_config inv_mpu_regmap_config = { 13 .reg_bits = 8, 14 .val_bits = 8, 15 }; 16 17 static 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 42 static 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 */ 74 static 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 85 MODULE_DEVICE_TABLE(spi, inv_mpu_id); 86 87 static const struct acpi_device_id inv_acpi_match[] = { 88 {"INVN6000", INV_MPU6000}, 89 { }, 90 }; 91 MODULE_DEVICE_TABLE(acpi, inv_acpi_match); 92 93 static 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 }; 102 103 module_spi_driver(inv_mpu_driver); 104 105 MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>"); 106 MODULE_DESCRIPTION("Invensense device MPU6000 driver"); 107 MODULE_LICENSE("GPL"); 108