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 /* 21 * For new single-chip sensors use <device_name> as compatible string. 22 * For old single-chip devices keep <device_name>-gyro to maintain 23 * compatibility 24 */ 25 static const struct of_device_id st_gyro_of_match[] = { 26 { 27 .compatible = "st,l3g4200d-gyro", 28 .data = L3G4200D_GYRO_DEV_NAME, 29 }, 30 { 31 .compatible = "st,lsm330d-gyro", 32 .data = LSM330D_GYRO_DEV_NAME, 33 }, 34 { 35 .compatible = "st,lsm330dl-gyro", 36 .data = LSM330DL_GYRO_DEV_NAME, 37 }, 38 { 39 .compatible = "st,lsm330dlc-gyro", 40 .data = LSM330DLC_GYRO_DEV_NAME, 41 }, 42 { 43 .compatible = "st,l3gd20-gyro", 44 .data = L3GD20_GYRO_DEV_NAME, 45 }, 46 { 47 .compatible = "st,l3gd20h-gyro", 48 .data = L3GD20H_GYRO_DEV_NAME, 49 }, 50 { 51 .compatible = "st,l3g4is-gyro", 52 .data = L3G4IS_GYRO_DEV_NAME, 53 }, 54 { 55 .compatible = "st,lsm330-gyro", 56 .data = LSM330_GYRO_DEV_NAME, 57 }, 58 { 59 .compatible = "st,lsm9ds0-gyro", 60 .data = LSM9DS0_GYRO_DEV_NAME, 61 }, 62 {}, 63 }; 64 MODULE_DEVICE_TABLE(of, st_gyro_of_match); 65 66 static int st_gyro_spi_probe(struct spi_device *spi) 67 { 68 const struct st_sensor_settings *settings; 69 struct st_sensor_data *gdata; 70 struct iio_dev *indio_dev; 71 int err; 72 73 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias)); 74 75 settings = st_gyro_get_settings(spi->modalias); 76 if (!settings) { 77 dev_err(&spi->dev, "device name %s not recognized.\n", 78 spi->modalias); 79 return -ENODEV; 80 } 81 82 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*gdata)); 83 if (!indio_dev) 84 return -ENOMEM; 85 86 gdata = iio_priv(indio_dev); 87 gdata->sensor_settings = (struct st_sensor_settings *)settings; 88 89 err = st_sensors_spi_configure(indio_dev, spi); 90 if (err < 0) 91 return err; 92 93 err = st_sensors_power_enable(indio_dev); 94 if (err) 95 return err; 96 97 err = st_gyro_common_probe(indio_dev); 98 if (err < 0) 99 goto st_gyro_power_off; 100 101 return 0; 102 103 st_gyro_power_off: 104 st_sensors_power_disable(indio_dev); 105 106 return err; 107 } 108 109 static int st_gyro_spi_remove(struct spi_device *spi) 110 { 111 struct iio_dev *indio_dev = spi_get_drvdata(spi); 112 113 st_sensors_power_disable(indio_dev); 114 115 st_gyro_common_remove(indio_dev); 116 117 return 0; 118 } 119 120 static const struct spi_device_id st_gyro_id_table[] = { 121 { L3G4200D_GYRO_DEV_NAME }, 122 { LSM330D_GYRO_DEV_NAME }, 123 { LSM330DL_GYRO_DEV_NAME }, 124 { LSM330DLC_GYRO_DEV_NAME }, 125 { L3GD20_GYRO_DEV_NAME }, 126 { L3GD20H_GYRO_DEV_NAME }, 127 { L3G4IS_GYRO_DEV_NAME }, 128 { LSM330_GYRO_DEV_NAME }, 129 { LSM9DS0_GYRO_DEV_NAME }, 130 {}, 131 }; 132 MODULE_DEVICE_TABLE(spi, st_gyro_id_table); 133 134 static struct spi_driver st_gyro_driver = { 135 .driver = { 136 .name = "st-gyro-spi", 137 .of_match_table = st_gyro_of_match, 138 }, 139 .probe = st_gyro_spi_probe, 140 .remove = st_gyro_spi_remove, 141 .id_table = st_gyro_id_table, 142 }; 143 module_spi_driver(st_gyro_driver); 144 145 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 146 MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver"); 147 MODULE_LICENSE("GPL v2"); 148