drivers/iio/accel/st_accel_core.c

   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 /* CUSTOM VALUES FOR SENSOR 4 */
 133 #define ST_ACCEL_4_WAI_EXP                      0x3a
 134 #define ST_ACCEL_4_ODR_ADDR                     0x20
 135 #define ST_ACCEL_4_ODR_MASK                     0x30 /* DF1 and DF0 */
 136 #define ST_ACCEL_4_ODR_AVL_40HZ_VAL             0x00
 137 #define ST_ACCEL_4_ODR_AVL_160HZ_VAL            0x01
 138 #define ST_ACCEL_4_ODR_AVL_640HZ_VAL            0x02
 139 #define ST_ACCEL_4_ODR_AVL_2560HZ_VAL           0x03
 140 #define ST_ACCEL_4_PW_ADDR                      0x20
 141 #define ST_ACCEL_4_PW_MASK                      0xc0
 142 #define ST_ACCEL_4_FS_ADDR                      0x21
 143 #define ST_ACCEL_4_FS_MASK                      0x80
 144 #define ST_ACCEL_4_FS_AVL_2_VAL                 0X00
 145 #define ST_ACCEL_4_FS_AVL_6_VAL                 0X01
 146 #define ST_ACCEL_4_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(1024)
 147 #define ST_ACCEL_4_FS_AVL_6_GAIN                IIO_G_TO_M_S_2(340)
 148 #define ST_ACCEL_4_BDU_ADDR                     0x21
 149 #define ST_ACCEL_4_BDU_MASK                     0x40
 150 #define ST_ACCEL_4_DRDY_IRQ_ADDR                0x21
 151 #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK           0x04
 152 #define ST_ACCEL_4_IG1_EN_ADDR                  0x21
 153 #define ST_ACCEL_4_IG1_EN_MASK                  0x08
 154 #define ST_ACCEL_4_MULTIREAD_BIT                true
 155
 156 /* CUSTOM VALUES FOR SENSOR 5 */
 157 #define ST_ACCEL_5_WAI_EXP                      0x3b
 158 #define ST_ACCEL_5_ODR_ADDR                     0x20
 159 #define ST_ACCEL_5_ODR_MASK                     0x80
 160 #define ST_ACCEL_5_ODR_AVL_100HZ_VAL            0x00
 161 #define ST_ACCEL_5_ODR_AVL_400HZ_VAL            0x01
 162 #define ST_ACCEL_5_PW_ADDR                      0x20
 163 #define ST_ACCEL_5_PW_MASK                      0x40
 164 #define ST_ACCEL_5_FS_ADDR                      0x20
 165 #define ST_ACCEL_5_FS_MASK                      0x20
 166 #define ST_ACCEL_5_FS_AVL_2_VAL                 0X00
 167 #define ST_ACCEL_5_FS_AVL_8_VAL                 0X01
 168 /* TODO: check these resulting gain settings, these are not in the datsheet */
 169 #define ST_ACCEL_5_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(18000)
 170 #define ST_ACCEL_5_FS_AVL_8_GAIN                IIO_G_TO_M_S_2(72000)
 171 #define ST_ACCEL_5_DRDY_IRQ_ADDR                0x22
 172 #define ST_ACCEL_5_DRDY_IRQ_INT1_MASK           0x04
 173 #define ST_ACCEL_5_DRDY_IRQ_INT2_MASK           0x20
 174 #define ST_ACCEL_5_IG1_EN_ADDR                  0x21
 175 #define ST_ACCEL_5_IG1_EN_MASK                  0x08
 176 #define ST_ACCEL_5_MULTIREAD_BIT                false
 177
 178 static const struct iio_chan_spec st_accel_8bit_channels[] = {
 179         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 180                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 181                         ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 8, 8,
 182                         ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1),
 183         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 184                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 185                         ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 8, 8,
 186                         ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1),
 187         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 188                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 189                         ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 8, 8,
 190                         ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1),
 191         IIO_CHAN_SOFT_TIMESTAMP(3)
 192 };
 193
 194 static const struct iio_chan_spec st_accel_12bit_channels[] = {
 195         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 196                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 197                         ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16,
 198                         ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
 199         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 200                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 201                         ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16,
 202                         ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
 203         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 204                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 205                         ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16,
 206                         ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
 207         IIO_CHAN_SOFT_TIMESTAMP(3)
 208 };
 209
 210 static const struct iio_chan_spec st_accel_16bit_channels[] = {
 211         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 212                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 213                         ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
 214                         ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
 215         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 216                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 217                         ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
 218                         ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
 219         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 220                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 221                         ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
 222                         ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
 223         IIO_CHAN_SOFT_TIMESTAMP(3)
 224 };
 225
 226 static const struct st_sensor_settings st_accel_sensors_settings[] = {
 227         {
 228                 .wai = ST_ACCEL_1_WAI_EXP,
 229                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 230                 .sensors_supported = {
 231                         [0] = LIS3DH_ACCEL_DEV_NAME,
 232                         [1] = LSM303DLHC_ACCEL_DEV_NAME,
 233                         [2] = LSM330D_ACCEL_DEV_NAME,
 234                         [3] = LSM330DL_ACCEL_DEV_NAME,
 235                         [4] = LSM330DLC_ACCEL_DEV_NAME,
 236                         [5] = LSM303AGR_ACCEL_DEV_NAME,
 237                 },
 238                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 239                 .odr = {
 240                         .addr = ST_ACCEL_1_ODR_ADDR,
 241                         .mask = ST_ACCEL_1_ODR_MASK,
 242                         .odr_avl = {
 243                                 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
 244                                 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
 245                                 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
 246                                 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
 247                                 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
 248                                 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
 249                                 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
 250                                 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
 251                         },
 252                 },
 253                 .pw = {
 254                         .addr = ST_ACCEL_1_ODR_ADDR,
 255                         .mask = ST_ACCEL_1_ODR_MASK,
 256                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 257                 },
 258                 .enable_axis = {
 259                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 260                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 261                 },
 262                 .fs = {
 263                         .addr = ST_ACCEL_1_FS_ADDR,
 264                         .mask = ST_ACCEL_1_FS_MASK,
 265                         .fs_avl = {
 266                                 [0] = {
 267                                         .num = ST_ACCEL_FS_AVL_2G,
 268                                         .value = ST_ACCEL_1_FS_AVL_2_VAL,
 269                                         .gain = ST_ACCEL_1_FS_AVL_2_GAIN,
 270                                 },
 271                                 [1] = {
 272                                         .num = ST_ACCEL_FS_AVL_4G,
 273                                         .value = ST_ACCEL_1_FS_AVL_4_VAL,
 274                                         .gain = ST_ACCEL_1_FS_AVL_4_GAIN,
 275                                 },
 276                                 [2] = {
 277                                         .num = ST_ACCEL_FS_AVL_8G,
 278                                         .value = ST_ACCEL_1_FS_AVL_8_VAL,
 279                                         .gain = ST_ACCEL_1_FS_AVL_8_GAIN,
 280                                 },
 281                                 [3] = {
 282                                         .num = ST_ACCEL_FS_AVL_16G,
 283                                         .value = ST_ACCEL_1_FS_AVL_16_VAL,
 284                                         .gain = ST_ACCEL_1_FS_AVL_16_GAIN,
 285                                 },
 286                         },
 287                 },
 288                 .bdu = {
 289                         .addr = ST_ACCEL_1_BDU_ADDR,
 290                         .mask = ST_ACCEL_1_BDU_MASK,
 291                 },
 292                 .drdy_irq = {
 293                         .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
 294                         .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
 295                         .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
 296                 },
 297                 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
 298                 .bootime = 2,
 299         },
 300         {
 301                 .wai = ST_ACCEL_2_WAI_EXP,
 302                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 303                 .sensors_supported = {
 304                         [0] = LIS331DLH_ACCEL_DEV_NAME,
 305                         [1] = LSM303DL_ACCEL_DEV_NAME,
 306                         [2] = LSM303DLH_ACCEL_DEV_NAME,
 307                         [3] = LSM303DLM_ACCEL_DEV_NAME,
 308                 },
 309                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 310                 .odr = {
 311                         .addr = ST_ACCEL_2_ODR_ADDR,
 312                         .mask = ST_ACCEL_2_ODR_MASK,
 313                         .odr_avl = {
 314                                 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
 315                                 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
 316                                 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
 317                                 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
 318                         },
 319                 },
 320                 .pw = {
 321                         .addr = ST_ACCEL_2_PW_ADDR,
 322                         .mask = ST_ACCEL_2_PW_MASK,
 323                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 324                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 325                 },
 326                 .enable_axis = {
 327                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 328                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 329                 },
 330                 .fs = {
 331                         .addr = ST_ACCEL_2_FS_ADDR,
 332                         .mask = ST_ACCEL_2_FS_MASK,
 333                         .fs_avl = {
 334                                 [0] = {
 335                                         .num = ST_ACCEL_FS_AVL_2G,
 336                                         .value = ST_ACCEL_2_FS_AVL_2_VAL,
 337                                         .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
 338                                 },
 339                                 [1] = {
 340                                         .num = ST_ACCEL_FS_AVL_4G,
 341                                         .value = ST_ACCEL_2_FS_AVL_4_VAL,
 342                                         .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
 343                                 },
 344                                 [2] = {
 345                                         .num = ST_ACCEL_FS_AVL_8G,
 346                                         .value = ST_ACCEL_2_FS_AVL_8_VAL,
 347                                         .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
 348                                 },
 349                         },
 350                 },
 351                 .bdu = {
 352                         .addr = ST_ACCEL_2_BDU_ADDR,
 353                         .mask = ST_ACCEL_2_BDU_MASK,
 354                 },
 355                 .drdy_irq = {
 356                         .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
 357                         .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
 358                         .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
 359                 },
 360                 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
 361                 .bootime = 2,
 362         },
 363         {
 364                 .wai = ST_ACCEL_3_WAI_EXP,
 365                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 366                 .sensors_supported = {
 367                         [0] = LSM330_ACCEL_DEV_NAME,
 368                 },
 369                 .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
 370                 .odr = {
 371                         .addr = ST_ACCEL_3_ODR_ADDR,
 372                         .mask = ST_ACCEL_3_ODR_MASK,
 373                         .odr_avl = {
 374                                 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
 375                                 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
 376                                 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
 377                                 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
 378                                 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
 379                                 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
 380                                 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
 381                                 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
 382                                 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
 383                                 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
 384                         },
 385                 },
 386                 .pw = {
 387                         .addr = ST_ACCEL_3_ODR_ADDR,
 388                         .mask = ST_ACCEL_3_ODR_MASK,
 389                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 390                 },
 391                 .enable_axis = {
 392                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 393                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 394                 },
 395                 .fs = {
 396                         .addr = ST_ACCEL_3_FS_ADDR,
 397                         .mask = ST_ACCEL_3_FS_MASK,
 398                         .fs_avl = {
 399                                 [0] = {
 400                                         .num = ST_ACCEL_FS_AVL_2G,
 401                                         .value = ST_ACCEL_3_FS_AVL_2_VAL,
 402                                         .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
 403                                 },
 404                                 [1] = {
 405                                         .num = ST_ACCEL_FS_AVL_4G,
 406                                         .value = ST_ACCEL_3_FS_AVL_4_VAL,
 407                                         .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
 408                                 },
 409                                 [2] = {
 410                                         .num = ST_ACCEL_FS_AVL_6G,
 411                                         .value = ST_ACCEL_3_FS_AVL_6_VAL,
 412                                         .gain = ST_ACCEL_3_FS_AVL_6_GAIN,
 413                                 },
 414                                 [3] = {
 415                                         .num = ST_ACCEL_FS_AVL_8G,
 416                                         .value = ST_ACCEL_3_FS_AVL_8_VAL,
 417                                         .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
 418                                 },
 419                                 [4] = {
 420                                         .num = ST_ACCEL_FS_AVL_16G,
 421                                         .value = ST_ACCEL_3_FS_AVL_16_VAL,
 422                                         .gain = ST_ACCEL_3_FS_AVL_16_GAIN,
 423                                 },
 424                         },
 425                 },
 426                 .bdu = {
 427                         .addr = ST_ACCEL_3_BDU_ADDR,
 428                         .mask = ST_ACCEL_3_BDU_MASK,
 429                 },
 430                 .drdy_irq = {
 431                         .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
 432                         .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
 433                         .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
 434                         .ig1 = {
 435                                 .en_addr = ST_ACCEL_3_IG1_EN_ADDR,
 436                                 .en_mask = ST_ACCEL_3_IG1_EN_MASK,
 437                         },
 438                 },
 439                 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
 440                 .bootime = 2,
 441         },
 442         {
 443                 .wai = ST_ACCEL_4_WAI_EXP,
 444                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 445                 .sensors_supported = {
 446                         [0] = LIS3LV02DL_ACCEL_DEV_NAME,
 447                 },
 448                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 449                 .odr = {
 450                         .addr = ST_ACCEL_4_ODR_ADDR,
 451                         .mask = ST_ACCEL_4_ODR_MASK,
 452                         .odr_avl = {
 453                                 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
 454                                 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
 455                                 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
 456                                 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
 457                         },
 458                 },
 459                 .pw = {
 460                         .addr = ST_ACCEL_4_PW_ADDR,
 461                         .mask = ST_ACCEL_4_PW_MASK,
 462                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 463                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 464                 },
 465                 .enable_axis = {
 466                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 467                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 468                 },
 469                 .fs = {
 470                         .addr = ST_ACCEL_4_FS_ADDR,
 471                         .mask = ST_ACCEL_4_FS_MASK,
 472                         .fs_avl = {
 473                                 [0] = {
 474                                         .num = ST_ACCEL_FS_AVL_2G,
 475                                         .value = ST_ACCEL_4_FS_AVL_2_VAL,
 476                                         .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
 477                                 },
 478                                 [1] = {
 479                                         .num = ST_ACCEL_FS_AVL_6G,
 480                                         .value = ST_ACCEL_4_FS_AVL_6_VAL,
 481                                         .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
 482                                 },
 483                         },
 484                 },
 485                 .bdu = {
 486                         .addr = ST_ACCEL_4_BDU_ADDR,
 487                         .mask = ST_ACCEL_4_BDU_MASK,
 488                 },
 489                 .drdy_irq = {
 490                         .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
 491                         .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
 492                         .ig1 = {
 493                                 .en_addr = ST_ACCEL_4_IG1_EN_ADDR,
 494                                 .en_mask = ST_ACCEL_4_IG1_EN_MASK,
 495                         },
 496                 },
 497                 .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
 498                 .bootime = 2, /* guess */
 499         },
 500         {
 501                 .wai = ST_ACCEL_5_WAI_EXP,
 502                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 503                 .sensors_supported = {
 504                         [0] = LIS331DL_ACCEL_DEV_NAME,
 505                 },
 506                 .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
 507                 .odr = {
 508                         .addr = ST_ACCEL_5_ODR_ADDR,
 509                         .mask = ST_ACCEL_5_ODR_MASK,
 510                         .odr_avl = {
 511                                 { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
 512                                 { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
 513                         },
 514                 },
 515                 .pw = {
 516                         .addr = ST_ACCEL_5_PW_ADDR,
 517                         .mask = ST_ACCEL_5_PW_MASK,
 518                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 519                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 520                 },
 521                 .enable_axis = {
 522                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 523                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 524                 },
 525                 .fs = {
 526                         .addr = ST_ACCEL_5_FS_ADDR,
 527                         .mask = ST_ACCEL_5_FS_MASK,
 528                         .fs_avl = {
 529                                 [0] = {
 530                                         .num = ST_ACCEL_FS_AVL_2G,
 531                                         .value = ST_ACCEL_5_FS_AVL_2_VAL,
 532                                         .gain = ST_ACCEL_5_FS_AVL_2_GAIN,
 533                                 },
 534                                 [1] = {
 535                                         .num = ST_ACCEL_FS_AVL_8G,
 536                                         .value = ST_ACCEL_5_FS_AVL_8_VAL,
 537                                         .gain = ST_ACCEL_5_FS_AVL_8_GAIN,
 538                                 },
 539                         },
 540                 },
 541                 .drdy_irq = {
 542                         .addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
 543                         .mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
 544                         .mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
 545                 },
 546                 .multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
 547                 .bootime = 2, /* guess */
 548         },
 549 };
 550
 551 static int st_accel_read_raw(struct iio_dev *indio_dev,
 552                         struct iio_chan_spec const *ch, int *val,
 553                                                         int *val2, long mask)
 554 {
 555         int err;
 556         struct st_sensor_data *adata = iio_priv(indio_dev);
 557
 558         switch (mask) {
 559         case IIO_CHAN_INFO_RAW:
 560                 err = st_sensors_read_info_raw(indio_dev, ch, val);
 561                 if (err < 0)
 562                         goto read_error;
 563
 564                 return IIO_VAL_INT;
 565         case IIO_CHAN_INFO_SCALE:
 566                 *val = 0;
 567                 *val2 = adata->current_fullscale->gain;
 568                 return IIO_VAL_INT_PLUS_MICRO;
 569         case IIO_CHAN_INFO_SAMP_FREQ:
 570                 *val = adata->odr;
 571                 return IIO_VAL_INT;
 572         default:
 573                 return -EINVAL;
 574         }
 575
 576 read_error:
 577         return err;
 578 }
 579
 580 static int st_accel_write_raw(struct iio_dev *indio_dev,
 581                 struct iio_chan_spec const *chan, int val, int val2, long mask)
 582 {
 583         int err;
 584
 585         switch (mask) {
 586         case IIO_CHAN_INFO_SCALE:
 587                 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
 588                 break;
 589         case IIO_CHAN_INFO_SAMP_FREQ:
 590                 if (val2)
 591                         return -EINVAL;
 592                 mutex_lock(&indio_dev->mlock);
 593                 err = st_sensors_set_odr(indio_dev, val);
 594                 mutex_unlock(&indio_dev->mlock);
 595                 return err;
 596         default:
 597                 return -EINVAL;
 598         }
 599
 600         return err;
 601 }
 602
 603 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
 604 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
 605
 606 static struct attribute *st_accel_attributes[] = {
 607         &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 608         &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
 609         NULL,
 610 };
 611
 612 static const struct attribute_group st_accel_attribute_group = {
 613         .attrs = st_accel_attributes,
 614 };
 615
 616 static const struct iio_info accel_info = {
 617         .driver_module = THIS_MODULE,
 618         .attrs = &st_accel_attribute_group,
 619         .read_raw = &st_accel_read_raw,
 620         .write_raw = &st_accel_write_raw,
 621 };
 622
 623 #ifdef CONFIG_IIO_TRIGGER
 624 static const struct iio_trigger_ops st_accel_trigger_ops = {
 625         .owner = THIS_MODULE,
 626         .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
 627 };
 628 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
 629 #else
 630 #define ST_ACCEL_TRIGGER_OPS NULL
 631 #endif
 632
 633 int st_accel_common_probe(struct iio_dev *indio_dev)
 634 {
 635         struct st_sensor_data *adata = iio_priv(indio_dev);
 636         int irq = adata->get_irq_data_ready(indio_dev);
 637         int err;
 638
 639         indio_dev->modes = INDIO_DIRECT_MODE;
 640         indio_dev->info = &accel_info;
 641         mutex_init(&adata->tb.buf_lock);
 642
 643         st_sensors_power_enable(indio_dev);
 644
 645         err = st_sensors_check_device_support(indio_dev,
 646                                         ARRAY_SIZE(st_accel_sensors_settings),
 647                                         st_accel_sensors_settings);
 648         if (err < 0)
 649                 return err;
 650
 651         adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
 652         adata->multiread_bit = adata->sensor_settings->multi_read_bit;
 653         indio_dev->channels = adata->sensor_settings->ch;
 654         indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 655
 656         adata->current_fullscale = (struct st_sensor_fullscale_avl *)
 657                                         &adata->sensor_settings->fs.fs_avl[0];
 658         adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
 659
 660         if (!adata->dev->platform_data)
 661                 adata->dev->platform_data =
 662                         (struct st_sensors_platform_data *)&default_accel_pdata;
 663
 664         err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data);
 665         if (err < 0)
 666                 return err;
 667
 668         err = st_accel_allocate_ring(indio_dev);
 669         if (err < 0)
 670                 return err;
 671
 672         if (irq > 0) {
 673                 err = st_sensors_allocate_trigger(indio_dev,
 674                                                  ST_ACCEL_TRIGGER_OPS);
 675                 if (err < 0)
 676                         goto st_accel_probe_trigger_error;
 677         }
 678
 679         err = iio_device_register(indio_dev);
 680         if (err)
 681                 goto st_accel_device_register_error;
 682
 683         dev_info(&indio_dev->dev, "registered accelerometer %s\n",
 684                  indio_dev->name);
 685
 686         return 0;
 687
 688 st_accel_device_register_error:
 689         if (irq > 0)
 690                 st_sensors_deallocate_trigger(indio_dev);
 691 st_accel_probe_trigger_error:
 692         st_accel_deallocate_ring(indio_dev);
 693
 694         return err;
 695 }
 696 EXPORT_SYMBOL(st_accel_common_probe);
 697
 698 void st_accel_common_remove(struct iio_dev *indio_dev)
 699 {
 700         struct st_sensor_data *adata = iio_priv(indio_dev);
 701
 702         st_sensors_power_disable(indio_dev);
 703
 704         iio_device_unregister(indio_dev);
 705         if (adata->get_irq_data_ready(indio_dev) > 0)
 706                 st_sensors_deallocate_trigger(indio_dev);
 707
 708         st_accel_deallocate_ring(indio_dev);
 709 }
 710 EXPORT_SYMBOL(st_accel_common_remove);
 711
 712 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 713 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
 714 MODULE_LICENSE("GPL v2");