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/acpi.h> 15 #include <linux/i2c.h> 16 #include <linux/iio/iio.h> 17 18 #include <linux/iio/common/st_sensors.h> 19 #include <linux/iio/common/st_sensors_i2c.h> 20 #include "st_accel.h" 21 22 #ifdef CONFIG_OF 23 static const struct of_device_id st_accel_of_match[] = { 24 { 25 /* An older compatible */ 26 .compatible = "st,lis3lv02d", 27 .data = LIS3LV02DL_ACCEL_DEV_NAME, 28 }, 29 { 30 .compatible = "st,lis3lv02dl-accel", 31 .data = LIS3LV02DL_ACCEL_DEV_NAME, 32 }, 33 { 34 .compatible = "st,lsm303dlh-accel", 35 .data = LSM303DLH_ACCEL_DEV_NAME, 36 }, 37 { 38 .compatible = "st,lsm303dlhc-accel", 39 .data = LSM303DLHC_ACCEL_DEV_NAME, 40 }, 41 { 42 .compatible = "st,lis3dh-accel", 43 .data = LIS3DH_ACCEL_DEV_NAME, 44 }, 45 { 46 .compatible = "st,lsm330d-accel", 47 .data = LSM330D_ACCEL_DEV_NAME, 48 }, 49 { 50 .compatible = "st,lsm330dl-accel", 51 .data = LSM330DL_ACCEL_DEV_NAME, 52 }, 53 { 54 .compatible = "st,lsm330dlc-accel", 55 .data = LSM330DLC_ACCEL_DEV_NAME, 56 }, 57 { 58 .compatible = "st,lis331dl-accel", 59 .data = LIS331DL_ACCEL_DEV_NAME, 60 }, 61 { 62 .compatible = "st,lis331dlh-accel", 63 .data = LIS331DLH_ACCEL_DEV_NAME, 64 }, 65 { 66 .compatible = "st,lsm303dl-accel", 67 .data = LSM303DL_ACCEL_DEV_NAME, 68 }, 69 { 70 .compatible = "st,lsm303dlm-accel", 71 .data = LSM303DLM_ACCEL_DEV_NAME, 72 }, 73 { 74 .compatible = "st,lsm330-accel", 75 .data = LSM330_ACCEL_DEV_NAME, 76 }, 77 { 78 .compatible = "st,lsm303agr-accel", 79 .data = LSM303AGR_ACCEL_DEV_NAME, 80 }, 81 { 82 .compatible = "st,lis2dh12-accel", 83 .data = LIS2DH12_ACCEL_DEV_NAME, 84 }, 85 { 86 .compatible = "st,h3lis331dl-accel", 87 .data = H3LIS331DL_DRIVER_NAME, 88 }, 89 { 90 .compatible = "st,lis3l02dq", 91 .data = LIS3L02DQ_ACCEL_DEV_NAME, 92 }, 93 { 94 .compatible = "st,lng2dm-accel", 95 .data = LNG2DM_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 #ifdef CONFIG_ACPI 105 static const struct acpi_device_id st_accel_acpi_match[] = { 106 {"SMO8A90", LNG2DM}, 107 { }, 108 }; 109 MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match); 110 #else 111 #define st_accel_acpi_match NULL 112 #endif 113 114 static const struct i2c_device_id st_accel_id_table[] = { 115 { LSM303DLH_ACCEL_DEV_NAME, LSM303DLH }, 116 { LSM303DLHC_ACCEL_DEV_NAME, LSM303DLHC }, 117 { LIS3DH_ACCEL_DEV_NAME, LIS3DH }, 118 { LSM330D_ACCEL_DEV_NAME, LSM330D }, 119 { LSM330DL_ACCEL_DEV_NAME, LSM330DL }, 120 { LSM330DLC_ACCEL_DEV_NAME, LSM330DLC }, 121 { LIS331DLH_ACCEL_DEV_NAME, LIS331DLH }, 122 { LSM303DL_ACCEL_DEV_NAME, LSM303DL }, 123 { LSM303DLM_ACCEL_DEV_NAME, LSM303DLM }, 124 { LSM330_ACCEL_DEV_NAME, LSM330 }, 125 { LSM303AGR_ACCEL_DEV_NAME, LSM303AGR }, 126 { LIS2DH12_ACCEL_DEV_NAME, LIS2DH12 }, 127 { LIS3L02DQ_ACCEL_DEV_NAME, LIS3L02DQ }, 128 { LNG2DM_ACCEL_DEV_NAME, LNG2DM }, 129 {}, 130 }; 131 MODULE_DEVICE_TABLE(i2c, st_accel_id_table); 132 133 static int st_accel_i2c_probe(struct i2c_client *client, 134 const struct i2c_device_id *id) 135 { 136 struct iio_dev *indio_dev; 137 struct st_sensor_data *adata; 138 int ret; 139 140 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata)); 141 if (!indio_dev) 142 return -ENOMEM; 143 144 adata = iio_priv(indio_dev); 145 146 if (client->dev.of_node) { 147 st_sensors_of_i2c_probe(client, st_accel_of_match); 148 } else if (ACPI_HANDLE(&client->dev)) { 149 ret = st_sensors_match_acpi_device(&client->dev); 150 if ((ret < 0) || (ret >= ST_ACCEL_MAX)) 151 return -ENODEV; 152 153 strncpy(client->name, st_accel_id_table[ret].name, 154 sizeof(client->name)); 155 client->name[sizeof(client->name) - 1] = '\0'; 156 } else if (!id) 157 return -ENODEV; 158 159 160 st_sensors_i2c_configure(indio_dev, client, adata); 161 162 ret = st_accel_common_probe(indio_dev); 163 if (ret < 0) 164 return ret; 165 166 return 0; 167 } 168 169 static int st_accel_i2c_remove(struct i2c_client *client) 170 { 171 st_accel_common_remove(i2c_get_clientdata(client)); 172 173 return 0; 174 } 175 176 static struct i2c_driver st_accel_driver = { 177 .driver = { 178 .name = "st-accel-i2c", 179 .of_match_table = of_match_ptr(st_accel_of_match), 180 .acpi_match_table = ACPI_PTR(st_accel_acpi_match), 181 }, 182 .probe = st_accel_i2c_probe, 183 .remove = st_accel_i2c_remove, 184 .id_table = st_accel_id_table, 185 }; 186 module_i2c_driver(st_accel_driver); 187 188 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 189 MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver"); 190 MODULE_LICENSE("GPL v2"); 191