1 /* 2 * STMicroelectronics accelerometers driver 3 * 4 * Copyright 2012-2013 STMicroelectronics Inc. 5 * 6 * Denis Ciocca <denis.ciocca@st.com> 7 * 8 * Licensed under the GPL-2. 9 */ 10 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 #include <linux/slab.h> 14 #include <linux/spi/spi.h> 15 #include <linux/iio/iio.h> 16 17 #include <linux/iio/common/st_sensors.h> 18 #include <linux/iio/common/st_sensors_spi.h> 19 #include "st_accel.h" 20 21 #ifdef CONFIG_OF 22 /* 23 * For new single-chip sensors use <device_name> as compatible string. 24 * For old single-chip devices keep <device_name>-accel to maintain 25 * compatibility 26 */ 27 static const struct of_device_id st_accel_of_match[] = { 28 { 29 /* An older compatible */ 30 .compatible = "st,lis302dl-spi", 31 .data = LIS3LV02DL_ACCEL_DEV_NAME, 32 }, 33 { 34 .compatible = "st,lis3lv02dl-accel", 35 .data = LIS3LV02DL_ACCEL_DEV_NAME, 36 }, 37 { 38 .compatible = "st,lis3dh-accel", 39 .data = LIS3DH_ACCEL_DEV_NAME, 40 }, 41 { 42 .compatible = "st,lsm330d-accel", 43 .data = LSM330D_ACCEL_DEV_NAME, 44 }, 45 { 46 .compatible = "st,lsm330dl-accel", 47 .data = LSM330DL_ACCEL_DEV_NAME, 48 }, 49 { 50 .compatible = "st,lsm330dlc-accel", 51 .data = LSM330DLC_ACCEL_DEV_NAME, 52 }, 53 { 54 .compatible = "st,lis331dlh-accel", 55 .data = LIS331DLH_ACCEL_DEV_NAME, 56 }, 57 { 58 .compatible = "st,lsm330-accel", 59 .data = LSM330_ACCEL_DEV_NAME, 60 }, 61 { 62 .compatible = "st,lsm303agr-accel", 63 .data = LSM303AGR_ACCEL_DEV_NAME, 64 }, 65 { 66 .compatible = "st,lis2dh12-accel", 67 .data = LIS2DH12_ACCEL_DEV_NAME, 68 }, 69 { 70 .compatible = "st,lis3l02dq", 71 .data = LIS3L02DQ_ACCEL_DEV_NAME, 72 }, 73 { 74 .compatible = "st,lng2dm-accel", 75 .data = LNG2DM_ACCEL_DEV_NAME, 76 }, 77 { 78 .compatible = "st,h3lis331dl-accel", 79 .data = H3LIS331DL_ACCEL_DEV_NAME, 80 }, 81 { 82 .compatible = "st,lis331dl-accel", 83 .data = LIS331DL_ACCEL_DEV_NAME, 84 }, 85 { 86 .compatible = "st,lis2dw12", 87 .data = LIS2DW12_ACCEL_DEV_NAME, 88 }, 89 { 90 .compatible = "st,lis3dhh", 91 .data = LIS3DHH_ACCEL_DEV_NAME, 92 }, 93 { 94 .compatible = "st,lis3de", 95 .data = LIS3DE_ACCEL_DEV_NAME, 96 }, 97 {} 98 }; 99 MODULE_DEVICE_TABLE(of, st_accel_of_match); 100 #else 101 #define st_accel_of_match NULL 102 #endif 103 104 static int st_accel_spi_probe(struct spi_device *spi) 105 { 106 struct iio_dev *indio_dev; 107 struct st_sensor_data *adata; 108 int err; 109 110 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata)); 111 if (!indio_dev) 112 return -ENOMEM; 113 114 adata = iio_priv(indio_dev); 115 116 st_sensors_of_name_probe(&spi->dev, st_accel_of_match, 117 spi->modalias, sizeof(spi->modalias)); 118 st_sensors_spi_configure(indio_dev, spi, adata); 119 120 err = st_accel_common_probe(indio_dev); 121 if (err < 0) 122 return err; 123 124 return 0; 125 } 126 127 static int st_accel_spi_remove(struct spi_device *spi) 128 { 129 st_accel_common_remove(spi_get_drvdata(spi)); 130 131 return 0; 132 } 133 134 static const struct spi_device_id st_accel_id_table[] = { 135 { LIS3DH_ACCEL_DEV_NAME }, 136 { LSM330D_ACCEL_DEV_NAME }, 137 { LSM330DL_ACCEL_DEV_NAME }, 138 { LSM330DLC_ACCEL_DEV_NAME }, 139 { LIS331DLH_ACCEL_DEV_NAME }, 140 { LSM330_ACCEL_DEV_NAME }, 141 { LSM303AGR_ACCEL_DEV_NAME }, 142 { LIS2DH12_ACCEL_DEV_NAME }, 143 { LIS3L02DQ_ACCEL_DEV_NAME }, 144 { LNG2DM_ACCEL_DEV_NAME }, 145 { H3LIS331DL_ACCEL_DEV_NAME }, 146 { LIS331DL_ACCEL_DEV_NAME }, 147 { LIS3LV02DL_ACCEL_DEV_NAME }, 148 { LIS2DW12_ACCEL_DEV_NAME }, 149 { LIS3DHH_ACCEL_DEV_NAME }, 150 { LIS3DE_ACCEL_DEV_NAME }, 151 {}, 152 }; 153 MODULE_DEVICE_TABLE(spi, st_accel_id_table); 154 155 static struct spi_driver st_accel_driver = { 156 .driver = { 157 .name = "st-accel-spi", 158 .of_match_table = of_match_ptr(st_accel_of_match), 159 }, 160 .probe = st_accel_spi_probe, 161 .remove = st_accel_spi_remove, 162 .id_table = st_accel_id_table, 163 }; 164 module_spi_driver(st_accel_driver); 165 166 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 167 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver"); 168 MODULE_LICENSE("GPL v2"); 169