1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics accelerometers 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/spi/spi.h> 13 #include <linux/iio/iio.h> 14 15 #include <linux/iio/common/st_sensors.h> 16 #include <linux/iio/common/st_sensors_spi.h> 17 #include "st_accel.h" 18 19 /* 20 * For new single-chip sensors use <device_name> as compatible string. 21 * For old single-chip devices keep <device_name>-accel to maintain 22 * compatibility 23 */ 24 static const struct of_device_id st_accel_of_match[] = { 25 { 26 /* An older compatible */ 27 .compatible = "st,lis302dl-spi", 28 .data = LIS3LV02DL_ACCEL_DEV_NAME, 29 }, 30 { 31 .compatible = "st,lis3lv02dl-accel", 32 .data = LIS3LV02DL_ACCEL_DEV_NAME, 33 }, 34 { 35 .compatible = "st,lis3dh-accel", 36 .data = LIS3DH_ACCEL_DEV_NAME, 37 }, 38 { 39 .compatible = "st,lsm330d-accel", 40 .data = LSM330D_ACCEL_DEV_NAME, 41 }, 42 { 43 .compatible = "st,lsm330dl-accel", 44 .data = LSM330DL_ACCEL_DEV_NAME, 45 }, 46 { 47 .compatible = "st,lsm330dlc-accel", 48 .data = LSM330DLC_ACCEL_DEV_NAME, 49 }, 50 { 51 .compatible = "st,lis331dlh-accel", 52 .data = LIS331DLH_ACCEL_DEV_NAME, 53 }, 54 { 55 .compatible = "st,lsm330-accel", 56 .data = LSM330_ACCEL_DEV_NAME, 57 }, 58 { 59 .compatible = "st,lsm303agr-accel", 60 .data = LSM303AGR_ACCEL_DEV_NAME, 61 }, 62 { 63 .compatible = "st,lis2dh12-accel", 64 .data = LIS2DH12_ACCEL_DEV_NAME, 65 }, 66 { 67 .compatible = "st,lis2ds12", 68 .data = LIS2DS12_ACCEL_DEV_NAME, 69 }, 70 { 71 .compatible = "st,lis3l02dq", 72 .data = LIS3L02DQ_ACCEL_DEV_NAME, 73 }, 74 { 75 .compatible = "st,lng2dm-accel", 76 .data = LNG2DM_ACCEL_DEV_NAME, 77 }, 78 { 79 .compatible = "st,h3lis331dl-accel", 80 .data = H3LIS331DL_ACCEL_DEV_NAME, 81 }, 82 { 83 .compatible = "st,lis331dl-accel", 84 .data = LIS331DL_ACCEL_DEV_NAME, 85 }, 86 { 87 .compatible = "st,lis2dw12", 88 .data = LIS2DW12_ACCEL_DEV_NAME, 89 }, 90 { 91 .compatible = "st,lis3dhh", 92 .data = LIS3DHH_ACCEL_DEV_NAME, 93 }, 94 { 95 .compatible = "st,lis3de", 96 .data = LIS3DE_ACCEL_DEV_NAME, 97 }, 98 { 99 .compatible = "st,lis302dl", 100 .data = LIS302DL_ACCEL_DEV_NAME, 101 }, 102 { 103 .compatible = "st,lsm303c-accel", 104 .data = LSM303C_ACCEL_DEV_NAME, 105 }, 106 { 107 .compatible = "st,iis328dq", 108 .data = IIS328DQ_ACCEL_DEV_NAME, 109 }, 110 { } 111 }; 112 MODULE_DEVICE_TABLE(of, st_accel_of_match); 113 114 static int st_accel_spi_probe(struct spi_device *spi) 115 { 116 const struct st_sensor_settings *settings; 117 struct st_sensor_data *adata; 118 struct iio_dev *indio_dev; 119 int err; 120 121 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias)); 122 123 settings = st_accel_get_settings(spi->modalias); 124 if (!settings) { 125 dev_err(&spi->dev, "device name %s not recognized.\n", 126 spi->modalias); 127 return -ENODEV; 128 } 129 130 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata)); 131 if (!indio_dev) 132 return -ENOMEM; 133 134 adata = iio_priv(indio_dev); 135 adata->sensor_settings = (struct st_sensor_settings *)settings; 136 137 err = st_sensors_spi_configure(indio_dev, spi); 138 if (err < 0) 139 return err; 140 141 err = st_sensors_power_enable(indio_dev); 142 if (err) 143 return err; 144 145 return st_accel_common_probe(indio_dev); 146 } 147 148 static const struct spi_device_id st_accel_id_table[] = { 149 { .name = LIS3DH_ACCEL_DEV_NAME }, 150 { .name = LSM330D_ACCEL_DEV_NAME }, 151 { .name = LSM330DL_ACCEL_DEV_NAME }, 152 { .name = LSM330DLC_ACCEL_DEV_NAME }, 153 { .name = LIS331DLH_ACCEL_DEV_NAME }, 154 { .name = LSM330_ACCEL_DEV_NAME }, 155 { .name = LSM303AGR_ACCEL_DEV_NAME }, 156 { .name = LIS2DH12_ACCEL_DEV_NAME }, 157 { .name = LIS2DS12_ACCEL_DEV_NAME }, 158 { .name = LIS3L02DQ_ACCEL_DEV_NAME }, 159 { .name = LNG2DM_ACCEL_DEV_NAME }, 160 { .name = H3LIS331DL_ACCEL_DEV_NAME }, 161 { .name = LIS331DL_ACCEL_DEV_NAME }, 162 { .name = LIS3LV02DL_ACCEL_DEV_NAME }, 163 { .name = LIS2DW12_ACCEL_DEV_NAME }, 164 { .name = LIS3DHH_ACCEL_DEV_NAME }, 165 { .name = LIS3DE_ACCEL_DEV_NAME }, 166 { .name = LIS302DL_ACCEL_DEV_NAME }, 167 { .name = LSM303C_ACCEL_DEV_NAME }, 168 { .name = IIS328DQ_ACCEL_DEV_NAME }, 169 { } 170 }; 171 MODULE_DEVICE_TABLE(spi, st_accel_id_table); 172 173 static struct spi_driver st_accel_driver = { 174 .driver = { 175 .name = "st-accel-spi", 176 .of_match_table = st_accel_of_match, 177 }, 178 .probe = st_accel_spi_probe, 179 .id_table = st_accel_id_table, 180 }; 181 module_spi_driver(st_accel_driver); 182 183 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 184 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver"); 185 MODULE_LICENSE("GPL v2"); 186 MODULE_IMPORT_NS("IIO_ST_SENSORS"); 187