1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics gyroscopes driver 4 * 5 * Copyright 2012-2013 STMicroelectronics Inc. 6 * 7 * Denis Ciocca <denis.ciocca@st.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/slab.h> 13 #include <linux/spi/spi.h> 14 #include <linux/iio/iio.h> 15 16 #include <linux/iio/common/st_sensors.h> 17 #include <linux/iio/common/st_sensors_spi.h> 18 #include "st_gyro.h" 19 20 #ifdef CONFIG_OF 21 /* 22 * For new single-chip sensors use <device_name> as compatible string. 23 * For old single-chip devices keep <device_name>-gyro to maintain 24 * compatibility 25 */ 26 static const struct of_device_id st_gyro_of_match[] = { 27 { 28 .compatible = "st,l3g4200d-gyro", 29 .data = L3G4200D_GYRO_DEV_NAME, 30 }, 31 { 32 .compatible = "st,lsm330d-gyro", 33 .data = LSM330D_GYRO_DEV_NAME, 34 }, 35 { 36 .compatible = "st,lsm330dl-gyro", 37 .data = LSM330DL_GYRO_DEV_NAME, 38 }, 39 { 40 .compatible = "st,lsm330dlc-gyro", 41 .data = LSM330DLC_GYRO_DEV_NAME, 42 }, 43 { 44 .compatible = "st,l3gd20-gyro", 45 .data = L3GD20_GYRO_DEV_NAME, 46 }, 47 { 48 .compatible = "st,l3gd20h-gyro", 49 .data = L3GD20H_GYRO_DEV_NAME, 50 }, 51 { 52 .compatible = "st,l3g4is-gyro", 53 .data = L3G4IS_GYRO_DEV_NAME, 54 }, 55 { 56 .compatible = "st,lsm330-gyro", 57 .data = LSM330_GYRO_DEV_NAME, 58 }, 59 { 60 .compatible = "st,lsm9ds0-gyro", 61 .data = LSM9DS0_GYRO_DEV_NAME, 62 }, 63 {}, 64 }; 65 MODULE_DEVICE_TABLE(of, st_gyro_of_match); 66 #else 67 #define st_gyro_of_match NULL 68 #endif 69 70 static int st_gyro_spi_probe(struct spi_device *spi) 71 { 72 const struct st_sensor_settings *settings; 73 struct st_sensor_data *gdata; 74 struct iio_dev *indio_dev; 75 int err; 76 77 st_sensors_of_name_probe(&spi->dev, st_gyro_of_match, 78 spi->modalias, sizeof(spi->modalias)); 79 80 settings = st_gyro_get_settings(spi->modalias); 81 if (!settings) { 82 dev_err(&spi->dev, "device name %s not recognized.\n", 83 spi->modalias); 84 return -ENODEV; 85 } 86 87 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata)); 88 if (!indio_dev) 89 return -ENOMEM; 90 91 gdata = iio_priv(indio_dev); 92 gdata->sensor_settings = (struct st_sensor_settings *)settings; 93 94 err = st_sensors_spi_configure(indio_dev, spi); 95 if (err < 0) 96 return err; 97 98 err = st_gyro_common_probe(indio_dev); 99 if (err < 0) 100 return err; 101 102 return 0; 103 } 104 105 static int st_gyro_spi_remove(struct spi_device *spi) 106 { 107 st_gyro_common_remove(spi_get_drvdata(spi)); 108 109 return 0; 110 } 111 112 static const struct spi_device_id st_gyro_id_table[] = { 113 { L3G4200D_GYRO_DEV_NAME }, 114 { LSM330D_GYRO_DEV_NAME }, 115 { LSM330DL_GYRO_DEV_NAME }, 116 { LSM330DLC_GYRO_DEV_NAME }, 117 { L3GD20_GYRO_DEV_NAME }, 118 { L3GD20H_GYRO_DEV_NAME }, 119 { L3G4IS_GYRO_DEV_NAME }, 120 { LSM330_GYRO_DEV_NAME }, 121 { LSM9DS0_GYRO_DEV_NAME }, 122 {}, 123 }; 124 MODULE_DEVICE_TABLE(spi, st_gyro_id_table); 125 126 static struct spi_driver st_gyro_driver = { 127 .driver = { 128 .name = "st-gyro-spi", 129 .of_match_table = of_match_ptr(st_gyro_of_match), 130 }, 131 .probe = st_gyro_spi_probe, 132 .remove = st_gyro_spi_remove, 133 .id_table = st_gyro_id_table, 134 }; 135 module_spi_driver(st_gyro_driver); 136 137 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 138 MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver"); 139 MODULE_LICENSE("GPL v2"); 140