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/errno.h> 15 #include <linux/types.h> 16 #include <linux/mutex.h> 17 #include <linux/interrupt.h> 18 #include <linux/i2c.h> 19 #include <linux/gpio.h> 20 #include <linux/irq.h> 21 #include <linux/iio/iio.h> 22 #include <linux/iio/sysfs.h> 23 #include <linux/iio/trigger.h> 24 #include <linux/iio/buffer.h> 25 26 #include <linux/iio/common/st_sensors.h> 27 #include "st_accel.h" 28 29 #define ST_ACCEL_NUMBER_DATA_CHANNELS 3 30 31 /* DEFAULT VALUE FOR SENSORS */ 32 #define ST_ACCEL_DEFAULT_OUT_X_L_ADDR 0x28 33 #define ST_ACCEL_DEFAULT_OUT_Y_L_ADDR 0x2a 34 #define ST_ACCEL_DEFAULT_OUT_Z_L_ADDR 0x2c 35 36 /* FULLSCALE */ 37 #define ST_ACCEL_FS_AVL_2G 2 38 #define ST_ACCEL_FS_AVL_4G 4 39 #define ST_ACCEL_FS_AVL_6G 6 40 #define ST_ACCEL_FS_AVL_8G 8 41 #define ST_ACCEL_FS_AVL_16G 16 42 43 /* CUSTOM VALUES FOR SENSOR 1 */ 44 #define ST_ACCEL_1_WAI_EXP 0x33 45 #define ST_ACCEL_1_ODR_ADDR 0x20 46 #define ST_ACCEL_1_ODR_MASK 0xf0 47 #define ST_ACCEL_1_ODR_AVL_1HZ_VAL 0x01 48 #define ST_ACCEL_1_ODR_AVL_10HZ_VAL 0x02 49 #define ST_ACCEL_1_ODR_AVL_25HZ_VAL 0x03 50 #define ST_ACCEL_1_ODR_AVL_50HZ_VAL 0x04 51 #define ST_ACCEL_1_ODR_AVL_100HZ_VAL 0x05 52 #define ST_ACCEL_1_ODR_AVL_200HZ_VAL 0x06 53 #define ST_ACCEL_1_ODR_AVL_400HZ_VAL 0x07 54 #define ST_ACCEL_1_ODR_AVL_1600HZ_VAL 0x08 55 #define ST_ACCEL_1_FS_ADDR 0x23 56 #define ST_ACCEL_1_FS_MASK 0x30 57 #define ST_ACCEL_1_FS_AVL_2_VAL 0x00 58 #define ST_ACCEL_1_FS_AVL_4_VAL 0x01 59 #define ST_ACCEL_1_FS_AVL_8_VAL 0x02 60 #define ST_ACCEL_1_FS_AVL_16_VAL 0x03 61 #define ST_ACCEL_1_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000) 62 #define ST_ACCEL_1_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000) 63 #define ST_ACCEL_1_FS_AVL_8_GAIN IIO_G_TO_M_S_2(4000) 64 #define ST_ACCEL_1_FS_AVL_16_GAIN IIO_G_TO_M_S_2(12000) 65 #define ST_ACCEL_1_BDU_ADDR 0x23 66 #define ST_ACCEL_1_BDU_MASK 0x80 67 #define ST_ACCEL_1_DRDY_IRQ_ADDR 0x22 68 #define ST_ACCEL_1_DRDY_IRQ_INT1_MASK 0x10 69 #define ST_ACCEL_1_DRDY_IRQ_INT2_MASK 0x08 70 #define ST_ACCEL_1_MULTIREAD_BIT true 71 72 /* CUSTOM VALUES FOR SENSOR 2 */ 73 #define ST_ACCEL_2_WAI_EXP 0x32 74 #define ST_ACCEL_2_ODR_ADDR 0x20 75 #define ST_ACCEL_2_ODR_MASK 0x18 76 #define ST_ACCEL_2_ODR_AVL_50HZ_VAL 0x00 77 #define ST_ACCEL_2_ODR_AVL_100HZ_VAL 0x01 78 #define ST_ACCEL_2_ODR_AVL_400HZ_VAL 0x02 79 #define ST_ACCEL_2_ODR_AVL_1000HZ_VAL 0x03 80 #define ST_ACCEL_2_PW_ADDR 0x20 81 #define ST_ACCEL_2_PW_MASK 0xe0 82 #define ST_ACCEL_2_FS_ADDR 0x23 83 #define ST_ACCEL_2_FS_MASK 0x30 84 #define ST_ACCEL_2_FS_AVL_2_VAL 0X00 85 #define ST_ACCEL_2_FS_AVL_4_VAL 0X01 86 #define ST_ACCEL_2_FS_AVL_8_VAL 0x03 87 #define ST_ACCEL_2_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000) 88 #define ST_ACCEL_2_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000) 89 #define ST_ACCEL_2_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900) 90 #define ST_ACCEL_2_BDU_ADDR 0x23 91 #define ST_ACCEL_2_BDU_MASK 0x80 92 #define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22 93 #define ST_ACCEL_2_DRDY_IRQ_INT1_MASK 0x02 94 #define ST_ACCEL_2_DRDY_IRQ_INT2_MASK 0x10 95 #define ST_ACCEL_2_MULTIREAD_BIT true 96 97 /* CUSTOM VALUES FOR SENSOR 3 */ 98 #define ST_ACCEL_3_WAI_EXP 0x40 99 #define ST_ACCEL_3_ODR_ADDR 0x20 100 #define ST_ACCEL_3_ODR_MASK 0xf0 101 #define ST_ACCEL_3_ODR_AVL_3HZ_VAL 0x01 102 #define ST_ACCEL_3_ODR_AVL_6HZ_VAL 0x02 103 #define ST_ACCEL_3_ODR_AVL_12HZ_VAL 0x03 104 #define ST_ACCEL_3_ODR_AVL_25HZ_VAL 0x04 105 #define ST_ACCEL_3_ODR_AVL_50HZ_VAL 0x05 106 #define ST_ACCEL_3_ODR_AVL_100HZ_VAL 0x06 107 #define ST_ACCEL_3_ODR_AVL_200HZ_VAL 0x07 108 #define ST_ACCEL_3_ODR_AVL_400HZ_VAL 0x08 109 #define ST_ACCEL_3_ODR_AVL_800HZ_VAL 0x09 110 #define ST_ACCEL_3_ODR_AVL_1600HZ_VAL 0x0a 111 #define ST_ACCEL_3_FS_ADDR 0x24 112 #define ST_ACCEL_3_FS_MASK 0x38 113 #define ST_ACCEL_3_FS_AVL_2_VAL 0X00 114 #define ST_ACCEL_3_FS_AVL_4_VAL 0X01 115 #define ST_ACCEL_3_FS_AVL_6_VAL 0x02 116 #define ST_ACCEL_3_FS_AVL_8_VAL 0x03 117 #define ST_ACCEL_3_FS_AVL_16_VAL 0x04 118 #define ST_ACCEL_3_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61) 119 #define ST_ACCEL_3_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122) 120 #define ST_ACCEL_3_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183) 121 #define ST_ACCEL_3_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244) 122 #define ST_ACCEL_3_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732) 123 #define ST_ACCEL_3_BDU_ADDR 0x20 124 #define ST_ACCEL_3_BDU_MASK 0x08 125 #define ST_ACCEL_3_DRDY_IRQ_ADDR 0x23 126 #define ST_ACCEL_3_DRDY_IRQ_INT1_MASK 0x80 127 #define ST_ACCEL_3_DRDY_IRQ_INT2_MASK 0x00 128 #define ST_ACCEL_3_IG1_EN_ADDR 0x23 129 #define ST_ACCEL_3_IG1_EN_MASK 0x08 130 #define ST_ACCEL_3_MULTIREAD_BIT false 131 132 static const struct iio_chan_spec st_accel_12bit_channels[] = { 133 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, 134 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 135 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16, 136 ST_ACCEL_DEFAULT_OUT_X_L_ADDR), 137 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, 138 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 139 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16, 140 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR), 141 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, 142 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 143 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16, 144 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR), 145 IIO_CHAN_SOFT_TIMESTAMP(3) 146 }; 147 148 static const struct iio_chan_spec st_accel_16bit_channels[] = { 149 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, 150 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 151 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, 152 ST_ACCEL_DEFAULT_OUT_X_L_ADDR), 153 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, 154 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 155 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, 156 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR), 157 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, 158 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), 159 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, 160 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR), 161 IIO_CHAN_SOFT_TIMESTAMP(3) 162 }; 163 164 static const struct st_sensor_settings st_accel_sensors_settings[] = { 165 { 166 .wai = ST_ACCEL_1_WAI_EXP, 167 .sensors_supported = { 168 [0] = LIS3DH_ACCEL_DEV_NAME, 169 [1] = LSM303DLHC_ACCEL_DEV_NAME, 170 [2] = LSM330D_ACCEL_DEV_NAME, 171 [3] = LSM330DL_ACCEL_DEV_NAME, 172 [4] = LSM330DLC_ACCEL_DEV_NAME, 173 }, 174 .ch = (struct iio_chan_spec *)st_accel_12bit_channels, 175 .odr = { 176 .addr = ST_ACCEL_1_ODR_ADDR, 177 .mask = ST_ACCEL_1_ODR_MASK, 178 .odr_avl = { 179 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, }, 180 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, }, 181 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, }, 182 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, }, 183 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, }, 184 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, }, 185 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, }, 186 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, }, 187 }, 188 }, 189 .pw = { 190 .addr = ST_ACCEL_1_ODR_ADDR, 191 .mask = ST_ACCEL_1_ODR_MASK, 192 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, 193 }, 194 .enable_axis = { 195 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, 196 .mask = ST_SENSORS_DEFAULT_AXIS_MASK, 197 }, 198 .fs = { 199 .addr = ST_ACCEL_1_FS_ADDR, 200 .mask = ST_ACCEL_1_FS_MASK, 201 .fs_avl = { 202 [0] = { 203 .num = ST_ACCEL_FS_AVL_2G, 204 .value = ST_ACCEL_1_FS_AVL_2_VAL, 205 .gain = ST_ACCEL_1_FS_AVL_2_GAIN, 206 }, 207 [1] = { 208 .num = ST_ACCEL_FS_AVL_4G, 209 .value = ST_ACCEL_1_FS_AVL_4_VAL, 210 .gain = ST_ACCEL_1_FS_AVL_4_GAIN, 211 }, 212 [2] = { 213 .num = ST_ACCEL_FS_AVL_8G, 214 .value = ST_ACCEL_1_FS_AVL_8_VAL, 215 .gain = ST_ACCEL_1_FS_AVL_8_GAIN, 216 }, 217 [3] = { 218 .num = ST_ACCEL_FS_AVL_16G, 219 .value = ST_ACCEL_1_FS_AVL_16_VAL, 220 .gain = ST_ACCEL_1_FS_AVL_16_GAIN, 221 }, 222 }, 223 }, 224 .bdu = { 225 .addr = ST_ACCEL_1_BDU_ADDR, 226 .mask = ST_ACCEL_1_BDU_MASK, 227 }, 228 .drdy_irq = { 229 .addr = ST_ACCEL_1_DRDY_IRQ_ADDR, 230 .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK, 231 .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK, 232 }, 233 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT, 234 .bootime = 2, 235 }, 236 { 237 .wai = ST_ACCEL_2_WAI_EXP, 238 .sensors_supported = { 239 [0] = LIS331DLH_ACCEL_DEV_NAME, 240 [1] = LSM303DL_ACCEL_DEV_NAME, 241 [2] = LSM303DLH_ACCEL_DEV_NAME, 242 [3] = LSM303DLM_ACCEL_DEV_NAME, 243 }, 244 .ch = (struct iio_chan_spec *)st_accel_12bit_channels, 245 .odr = { 246 .addr = ST_ACCEL_2_ODR_ADDR, 247 .mask = ST_ACCEL_2_ODR_MASK, 248 .odr_avl = { 249 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, }, 250 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, }, 251 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, }, 252 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, }, 253 }, 254 }, 255 .pw = { 256 .addr = ST_ACCEL_2_PW_ADDR, 257 .mask = ST_ACCEL_2_PW_MASK, 258 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, 259 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, 260 }, 261 .enable_axis = { 262 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, 263 .mask = ST_SENSORS_DEFAULT_AXIS_MASK, 264 }, 265 .fs = { 266 .addr = ST_ACCEL_2_FS_ADDR, 267 .mask = ST_ACCEL_2_FS_MASK, 268 .fs_avl = { 269 [0] = { 270 .num = ST_ACCEL_FS_AVL_2G, 271 .value = ST_ACCEL_2_FS_AVL_2_VAL, 272 .gain = ST_ACCEL_2_FS_AVL_2_GAIN, 273 }, 274 [1] = { 275 .num = ST_ACCEL_FS_AVL_4G, 276 .value = ST_ACCEL_2_FS_AVL_4_VAL, 277 .gain = ST_ACCEL_2_FS_AVL_4_GAIN, 278 }, 279 [2] = { 280 .num = ST_ACCEL_FS_AVL_8G, 281 .value = ST_ACCEL_2_FS_AVL_8_VAL, 282 .gain = ST_ACCEL_2_FS_AVL_8_GAIN, 283 }, 284 }, 285 }, 286 .bdu = { 287 .addr = ST_ACCEL_2_BDU_ADDR, 288 .mask = ST_ACCEL_2_BDU_MASK, 289 }, 290 .drdy_irq = { 291 .addr = ST_ACCEL_2_DRDY_IRQ_ADDR, 292 .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK, 293 .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK, 294 }, 295 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT, 296 .bootime = 2, 297 }, 298 { 299 .wai = ST_ACCEL_3_WAI_EXP, 300 .sensors_supported = { 301 [0] = LSM330_ACCEL_DEV_NAME, 302 }, 303 .ch = (struct iio_chan_spec *)st_accel_16bit_channels, 304 .odr = { 305 .addr = ST_ACCEL_3_ODR_ADDR, 306 .mask = ST_ACCEL_3_ODR_MASK, 307 .odr_avl = { 308 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL }, 309 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, }, 310 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, }, 311 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, }, 312 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, }, 313 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, }, 314 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, }, 315 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, }, 316 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, }, 317 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, }, 318 }, 319 }, 320 .pw = { 321 .addr = ST_ACCEL_3_ODR_ADDR, 322 .mask = ST_ACCEL_3_ODR_MASK, 323 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, 324 }, 325 .enable_axis = { 326 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, 327 .mask = ST_SENSORS_DEFAULT_AXIS_MASK, 328 }, 329 .fs = { 330 .addr = ST_ACCEL_3_FS_ADDR, 331 .mask = ST_ACCEL_3_FS_MASK, 332 .fs_avl = { 333 [0] = { 334 .num = ST_ACCEL_FS_AVL_2G, 335 .value = ST_ACCEL_3_FS_AVL_2_VAL, 336 .gain = ST_ACCEL_3_FS_AVL_2_GAIN, 337 }, 338 [1] = { 339 .num = ST_ACCEL_FS_AVL_4G, 340 .value = ST_ACCEL_3_FS_AVL_4_VAL, 341 .gain = ST_ACCEL_3_FS_AVL_4_GAIN, 342 }, 343 [2] = { 344 .num = ST_ACCEL_FS_AVL_6G, 345 .value = ST_ACCEL_3_FS_AVL_6_VAL, 346 .gain = ST_ACCEL_3_FS_AVL_6_GAIN, 347 }, 348 [3] = { 349 .num = ST_ACCEL_FS_AVL_8G, 350 .value = ST_ACCEL_3_FS_AVL_8_VAL, 351 .gain = ST_ACCEL_3_FS_AVL_8_GAIN, 352 }, 353 [4] = { 354 .num = ST_ACCEL_FS_AVL_16G, 355 .value = ST_ACCEL_3_FS_AVL_16_VAL, 356 .gain = ST_ACCEL_3_FS_AVL_16_GAIN, 357 }, 358 }, 359 }, 360 .bdu = { 361 .addr = ST_ACCEL_3_BDU_ADDR, 362 .mask = ST_ACCEL_3_BDU_MASK, 363 }, 364 .drdy_irq = { 365 .addr = ST_ACCEL_3_DRDY_IRQ_ADDR, 366 .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK, 367 .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK, 368 .ig1 = { 369 .en_addr = ST_ACCEL_3_IG1_EN_ADDR, 370 .en_mask = ST_ACCEL_3_IG1_EN_MASK, 371 }, 372 }, 373 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT, 374 .bootime = 2, 375 }, 376 }; 377 378 static int st_accel_read_raw(struct iio_dev *indio_dev, 379 struct iio_chan_spec const *ch, int *val, 380 int *val2, long mask) 381 { 382 int err; 383 struct st_sensor_data *adata = iio_priv(indio_dev); 384 385 switch (mask) { 386 case IIO_CHAN_INFO_RAW: 387 err = st_sensors_read_info_raw(indio_dev, ch, val); 388 if (err < 0) 389 goto read_error; 390 391 return IIO_VAL_INT; 392 case IIO_CHAN_INFO_SCALE: 393 *val = 0; 394 *val2 = adata->current_fullscale->gain; 395 return IIO_VAL_INT_PLUS_MICRO; 396 case IIO_CHAN_INFO_SAMP_FREQ: 397 *val = adata->odr; 398 return IIO_VAL_INT; 399 default: 400 return -EINVAL; 401 } 402 403 read_error: 404 return err; 405 } 406 407 static int st_accel_write_raw(struct iio_dev *indio_dev, 408 struct iio_chan_spec const *chan, int val, int val2, long mask) 409 { 410 int err; 411 412 switch (mask) { 413 case IIO_CHAN_INFO_SCALE: 414 err = st_sensors_set_fullscale_by_gain(indio_dev, val2); 415 break; 416 case IIO_CHAN_INFO_SAMP_FREQ: 417 if (val2) 418 return -EINVAL; 419 mutex_lock(&indio_dev->mlock); 420 err = st_sensors_set_odr(indio_dev, val); 421 mutex_unlock(&indio_dev->mlock); 422 return err; 423 default: 424 return -EINVAL; 425 } 426 427 return err; 428 } 429 430 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); 431 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available); 432 433 static struct attribute *st_accel_attributes[] = { 434 &iio_dev_attr_sampling_frequency_available.dev_attr.attr, 435 &iio_dev_attr_in_accel_scale_available.dev_attr.attr, 436 NULL, 437 }; 438 439 static const struct attribute_group st_accel_attribute_group = { 440 .attrs = st_accel_attributes, 441 }; 442 443 static const struct iio_info accel_info = { 444 .driver_module = THIS_MODULE, 445 .attrs = &st_accel_attribute_group, 446 .read_raw = &st_accel_read_raw, 447 .write_raw = &st_accel_write_raw, 448 }; 449 450 #ifdef CONFIG_IIO_TRIGGER 451 static const struct iio_trigger_ops st_accel_trigger_ops = { 452 .owner = THIS_MODULE, 453 .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE, 454 }; 455 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops) 456 #else 457 #define ST_ACCEL_TRIGGER_OPS NULL 458 #endif 459 460 int st_accel_common_probe(struct iio_dev *indio_dev) 461 { 462 struct st_sensor_data *adata = iio_priv(indio_dev); 463 int irq = adata->get_irq_data_ready(indio_dev); 464 int err; 465 466 indio_dev->modes = INDIO_DIRECT_MODE; 467 indio_dev->info = &accel_info; 468 469 st_sensors_power_enable(indio_dev); 470 471 err = st_sensors_check_device_support(indio_dev, 472 ARRAY_SIZE(st_accel_sensors_settings), 473 st_accel_sensors_settings); 474 if (err < 0) 475 return err; 476 477 adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS; 478 adata->multiread_bit = adata->sensor_settings->multi_read_bit; 479 indio_dev->channels = adata->sensor_settings->ch; 480 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; 481 482 adata->current_fullscale = (struct st_sensor_fullscale_avl *) 483 &adata->sensor_settings->fs.fs_avl[0]; 484 adata->odr = adata->sensor_settings->odr.odr_avl[0].hz; 485 486 if (!adata->dev->platform_data) 487 adata->dev->platform_data = 488 (struct st_sensors_platform_data *)&default_accel_pdata; 489 490 err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data); 491 if (err < 0) 492 return err; 493 494 err = st_accel_allocate_ring(indio_dev); 495 if (err < 0) 496 return err; 497 498 if (irq > 0) { 499 err = st_sensors_allocate_trigger(indio_dev, 500 ST_ACCEL_TRIGGER_OPS); 501 if (err < 0) 502 goto st_accel_probe_trigger_error; 503 } 504 505 err = iio_device_register(indio_dev); 506 if (err) 507 goto st_accel_device_register_error; 508 509 dev_info(&indio_dev->dev, "registered accelerometer %s\n", 510 indio_dev->name); 511 512 return 0; 513 514 st_accel_device_register_error: 515 if (irq > 0) 516 st_sensors_deallocate_trigger(indio_dev); 517 st_accel_probe_trigger_error: 518 st_accel_deallocate_ring(indio_dev); 519 520 return err; 521 } 522 EXPORT_SYMBOL(st_accel_common_probe); 523 524 void st_accel_common_remove(struct iio_dev *indio_dev) 525 { 526 struct st_sensor_data *adata = iio_priv(indio_dev); 527 528 st_sensors_power_disable(indio_dev); 529 530 iio_device_unregister(indio_dev); 531 if (adata->get_irq_data_ready(indio_dev) > 0) 532 st_sensors_deallocate_trigger(indio_dev); 533 534 st_accel_deallocate_ring(indio_dev); 535 } 536 EXPORT_SYMBOL(st_accel_common_remove); 537 538 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 539 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver"); 540 MODULE_LICENSE("GPL v2"); 541