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 #define ST_ACCEL_FS_AVL_100G                    100
  43 #define ST_ACCEL_FS_AVL_200G                    200
  44 #define ST_ACCEL_FS_AVL_400G                    400
  45
  46 /* CUSTOM VALUES FOR SENSOR 1 */
  47 #define ST_ACCEL_1_WAI_EXP                      0x33
  48 #define ST_ACCEL_1_ODR_ADDR                     0x20
  49 #define ST_ACCEL_1_ODR_MASK                     0xf0
  50 #define ST_ACCEL_1_ODR_AVL_1HZ_VAL              0x01
  51 #define ST_ACCEL_1_ODR_AVL_10HZ_VAL             0x02
  52 #define ST_ACCEL_1_ODR_AVL_25HZ_VAL             0x03
  53 #define ST_ACCEL_1_ODR_AVL_50HZ_VAL             0x04
  54 #define ST_ACCEL_1_ODR_AVL_100HZ_VAL            0x05
  55 #define ST_ACCEL_1_ODR_AVL_200HZ_VAL            0x06
  56 #define ST_ACCEL_1_ODR_AVL_400HZ_VAL            0x07
  57 #define ST_ACCEL_1_ODR_AVL_1600HZ_VAL           0x08
  58 #define ST_ACCEL_1_FS_ADDR                      0x23
  59 #define ST_ACCEL_1_FS_MASK                      0x30
  60 #define ST_ACCEL_1_FS_AVL_2_VAL                 0x00
  61 #define ST_ACCEL_1_FS_AVL_4_VAL                 0x01
  62 #define ST_ACCEL_1_FS_AVL_8_VAL                 0x02
  63 #define ST_ACCEL_1_FS_AVL_16_VAL                0x03
  64 #define ST_ACCEL_1_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(1000)
  65 #define ST_ACCEL_1_FS_AVL_4_GAIN                IIO_G_TO_M_S_2(2000)
  66 #define ST_ACCEL_1_FS_AVL_8_GAIN                IIO_G_TO_M_S_2(4000)
  67 #define ST_ACCEL_1_FS_AVL_16_GAIN               IIO_G_TO_M_S_2(12000)
  68 #define ST_ACCEL_1_BDU_ADDR                     0x23
  69 #define ST_ACCEL_1_BDU_MASK                     0x80
  70 #define ST_ACCEL_1_DRDY_IRQ_ADDR                0x22
  71 #define ST_ACCEL_1_DRDY_IRQ_INT1_MASK           0x10
  72 #define ST_ACCEL_1_DRDY_IRQ_INT2_MASK           0x08
  73 #define ST_ACCEL_1_IHL_IRQ_ADDR                 0x25
  74 #define ST_ACCEL_1_IHL_IRQ_MASK                 0x02
  75 #define ST_ACCEL_1_MULTIREAD_BIT                true
  76
  77 /* CUSTOM VALUES FOR SENSOR 2 */
  78 #define ST_ACCEL_2_WAI_EXP                      0x32
  79 #define ST_ACCEL_2_ODR_ADDR                     0x20
  80 #define ST_ACCEL_2_ODR_MASK                     0x18
  81 #define ST_ACCEL_2_ODR_AVL_50HZ_VAL             0x00
  82 #define ST_ACCEL_2_ODR_AVL_100HZ_VAL            0x01
  83 #define ST_ACCEL_2_ODR_AVL_400HZ_VAL            0x02
  84 #define ST_ACCEL_2_ODR_AVL_1000HZ_VAL           0x03
  85 #define ST_ACCEL_2_PW_ADDR                      0x20
  86 #define ST_ACCEL_2_PW_MASK                      0xe0
  87 #define ST_ACCEL_2_FS_ADDR                      0x23
  88 #define ST_ACCEL_2_FS_MASK                      0x30
  89 #define ST_ACCEL_2_FS_AVL_2_VAL                 0X00
  90 #define ST_ACCEL_2_FS_AVL_4_VAL                 0X01
  91 #define ST_ACCEL_2_FS_AVL_8_VAL                 0x03
  92 #define ST_ACCEL_2_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(1000)
  93 #define ST_ACCEL_2_FS_AVL_4_GAIN                IIO_G_TO_M_S_2(2000)
  94 #define ST_ACCEL_2_FS_AVL_8_GAIN                IIO_G_TO_M_S_2(3900)
  95 #define ST_ACCEL_2_BDU_ADDR                     0x23
  96 #define ST_ACCEL_2_BDU_MASK                     0x80
  97 #define ST_ACCEL_2_DRDY_IRQ_ADDR                0x22
  98 #define ST_ACCEL_2_DRDY_IRQ_INT1_MASK           0x02
  99 #define ST_ACCEL_2_DRDY_IRQ_INT2_MASK           0x10
 100 #define ST_ACCEL_2_IHL_IRQ_ADDR                 0x22
 101 #define ST_ACCEL_2_IHL_IRQ_MASK                 0x80
 102 #define ST_ACCEL_2_OD_IRQ_ADDR                  0x22
 103 #define ST_ACCEL_2_OD_IRQ_MASK                  0x40
 104 #define ST_ACCEL_2_MULTIREAD_BIT                true
 105
 106 /* CUSTOM VALUES FOR SENSOR 3 */
 107 #define ST_ACCEL_3_WAI_EXP                      0x40
 108 #define ST_ACCEL_3_ODR_ADDR                     0x20
 109 #define ST_ACCEL_3_ODR_MASK                     0xf0
 110 #define ST_ACCEL_3_ODR_AVL_3HZ_VAL              0x01
 111 #define ST_ACCEL_3_ODR_AVL_6HZ_VAL              0x02
 112 #define ST_ACCEL_3_ODR_AVL_12HZ_VAL             0x03
 113 #define ST_ACCEL_3_ODR_AVL_25HZ_VAL             0x04
 114 #define ST_ACCEL_3_ODR_AVL_50HZ_VAL             0x05
 115 #define ST_ACCEL_3_ODR_AVL_100HZ_VAL            0x06
 116 #define ST_ACCEL_3_ODR_AVL_200HZ_VAL            0x07
 117 #define ST_ACCEL_3_ODR_AVL_400HZ_VAL            0x08
 118 #define ST_ACCEL_3_ODR_AVL_800HZ_VAL            0x09
 119 #define ST_ACCEL_3_ODR_AVL_1600HZ_VAL           0x0a
 120 #define ST_ACCEL_3_FS_ADDR                      0x24
 121 #define ST_ACCEL_3_FS_MASK                      0x38
 122 #define ST_ACCEL_3_FS_AVL_2_VAL                 0X00
 123 #define ST_ACCEL_3_FS_AVL_4_VAL                 0X01
 124 #define ST_ACCEL_3_FS_AVL_6_VAL                 0x02
 125 #define ST_ACCEL_3_FS_AVL_8_VAL                 0x03
 126 #define ST_ACCEL_3_FS_AVL_16_VAL                0x04
 127 #define ST_ACCEL_3_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(61)
 128 #define ST_ACCEL_3_FS_AVL_4_GAIN                IIO_G_TO_M_S_2(122)
 129 #define ST_ACCEL_3_FS_AVL_6_GAIN                IIO_G_TO_M_S_2(183)
 130 #define ST_ACCEL_3_FS_AVL_8_GAIN                IIO_G_TO_M_S_2(244)
 131 #define ST_ACCEL_3_FS_AVL_16_GAIN               IIO_G_TO_M_S_2(732)
 132 #define ST_ACCEL_3_BDU_ADDR                     0x20
 133 #define ST_ACCEL_3_BDU_MASK                     0x08
 134 #define ST_ACCEL_3_DRDY_IRQ_ADDR                0x23
 135 #define ST_ACCEL_3_DRDY_IRQ_INT1_MASK           0x80
 136 #define ST_ACCEL_3_DRDY_IRQ_INT2_MASK           0x00
 137 #define ST_ACCEL_3_IHL_IRQ_ADDR                 0x23
 138 #define ST_ACCEL_3_IHL_IRQ_MASK                 0x40
 139 #define ST_ACCEL_3_IG1_EN_ADDR                  0x23
 140 #define ST_ACCEL_3_IG1_EN_MASK                  0x08
 141 #define ST_ACCEL_3_MULTIREAD_BIT                false
 142
 143 /* CUSTOM VALUES FOR SENSOR 4 */
 144 #define ST_ACCEL_4_WAI_EXP                      0x3a
 145 #define ST_ACCEL_4_ODR_ADDR                     0x20
 146 #define ST_ACCEL_4_ODR_MASK                     0x30 /* DF1 and DF0 */
 147 #define ST_ACCEL_4_ODR_AVL_40HZ_VAL             0x00
 148 #define ST_ACCEL_4_ODR_AVL_160HZ_VAL            0x01
 149 #define ST_ACCEL_4_ODR_AVL_640HZ_VAL            0x02
 150 #define ST_ACCEL_4_ODR_AVL_2560HZ_VAL           0x03
 151 #define ST_ACCEL_4_PW_ADDR                      0x20
 152 #define ST_ACCEL_4_PW_MASK                      0xc0
 153 #define ST_ACCEL_4_FS_ADDR                      0x21
 154 #define ST_ACCEL_4_FS_MASK                      0x80
 155 #define ST_ACCEL_4_FS_AVL_2_VAL                 0X00
 156 #define ST_ACCEL_4_FS_AVL_6_VAL                 0X01
 157 #define ST_ACCEL_4_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(1000)
 158 #define ST_ACCEL_4_FS_AVL_6_GAIN                IIO_G_TO_M_S_2(3000)
 159 #define ST_ACCEL_4_BDU_ADDR                     0x21
 160 #define ST_ACCEL_4_BDU_MASK                     0x40
 161 #define ST_ACCEL_4_DRDY_IRQ_ADDR                0x21
 162 #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK           0x04
 163 #define ST_ACCEL_4_MULTIREAD_BIT                true
 164
 165 /* CUSTOM VALUES FOR SENSOR 5 */
 166 #define ST_ACCEL_5_WAI_EXP                      0x3b
 167 #define ST_ACCEL_5_ODR_ADDR                     0x20
 168 #define ST_ACCEL_5_ODR_MASK                     0x80
 169 #define ST_ACCEL_5_ODR_AVL_100HZ_VAL            0x00
 170 #define ST_ACCEL_5_ODR_AVL_400HZ_VAL            0x01
 171 #define ST_ACCEL_5_PW_ADDR                      0x20
 172 #define ST_ACCEL_5_PW_MASK                      0x40
 173 #define ST_ACCEL_5_FS_ADDR                      0x20
 174 #define ST_ACCEL_5_FS_MASK                      0x20
 175 #define ST_ACCEL_5_FS_AVL_2_VAL                 0X00
 176 #define ST_ACCEL_5_FS_AVL_8_VAL                 0X01
 177 /* TODO: check these resulting gain settings, these are not in the datsheet */
 178 #define ST_ACCEL_5_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(18000)
 179 #define ST_ACCEL_5_FS_AVL_8_GAIN                IIO_G_TO_M_S_2(72000)
 180 #define ST_ACCEL_5_DRDY_IRQ_ADDR                0x22
 181 #define ST_ACCEL_5_DRDY_IRQ_INT1_MASK           0x04
 182 #define ST_ACCEL_5_DRDY_IRQ_INT2_MASK           0x20
 183 #define ST_ACCEL_5_IHL_IRQ_ADDR                 0x22
 184 #define ST_ACCEL_5_IHL_IRQ_MASK                 0x80
 185 #define ST_ACCEL_5_OD_IRQ_ADDR                  0x22
 186 #define ST_ACCEL_5_OD_IRQ_MASK                  0x40
 187 #define ST_ACCEL_5_IG1_EN_ADDR                  0x21
 188 #define ST_ACCEL_5_IG1_EN_MASK                  0x08
 189 #define ST_ACCEL_5_MULTIREAD_BIT                false
 190
 191 /* CUSTOM VALUES FOR SENSOR 6 */
 192 #define ST_ACCEL_6_WAI_EXP                      0x32
 193 #define ST_ACCEL_6_ODR_ADDR                     0x20
 194 #define ST_ACCEL_6_ODR_MASK                     0x18
 195 #define ST_ACCEL_6_ODR_AVL_50HZ_VAL             0x00
 196 #define ST_ACCEL_6_ODR_AVL_100HZ_VAL            0x01
 197 #define ST_ACCEL_6_ODR_AVL_400HZ_VAL            0x02
 198 #define ST_ACCEL_6_ODR_AVL_1000HZ_VAL           0x03
 199 #define ST_ACCEL_6_PW_ADDR                      0x20
 200 #define ST_ACCEL_6_PW_MASK                      0x20
 201 #define ST_ACCEL_6_FS_ADDR                      0x23
 202 #define ST_ACCEL_6_FS_MASK                      0x30
 203 #define ST_ACCEL_6_FS_AVL_100_VAL               0x00
 204 #define ST_ACCEL_6_FS_AVL_200_VAL               0x01
 205 #define ST_ACCEL_6_FS_AVL_400_VAL               0x03
 206 #define ST_ACCEL_6_FS_AVL_100_GAIN              IIO_G_TO_M_S_2(49000)
 207 #define ST_ACCEL_6_FS_AVL_200_GAIN              IIO_G_TO_M_S_2(98000)
 208 #define ST_ACCEL_6_FS_AVL_400_GAIN              IIO_G_TO_M_S_2(195000)
 209 #define ST_ACCEL_6_BDU_ADDR                     0x23
 210 #define ST_ACCEL_6_BDU_MASK                     0x80
 211 #define ST_ACCEL_6_DRDY_IRQ_ADDR                0x22
 212 #define ST_ACCEL_6_DRDY_IRQ_INT1_MASK           0x02
 213 #define ST_ACCEL_6_DRDY_IRQ_INT2_MASK           0x10
 214 #define ST_ACCEL_6_IHL_IRQ_ADDR                 0x22
 215 #define ST_ACCEL_6_IHL_IRQ_MASK                 0x80
 216 #define ST_ACCEL_6_MULTIREAD_BIT                true
 217
 218 /* CUSTOM VALUES FOR SENSOR 7 */
 219 #define ST_ACCEL_7_ODR_ADDR                     0x20
 220 #define ST_ACCEL_7_ODR_MASK                     0x30
 221 #define ST_ACCEL_7_ODR_AVL_280HZ_VAL            0x00
 222 #define ST_ACCEL_7_ODR_AVL_560HZ_VAL            0x01
 223 #define ST_ACCEL_7_ODR_AVL_1120HZ_VAL           0x02
 224 #define ST_ACCEL_7_ODR_AVL_4480HZ_VAL           0x03
 225 #define ST_ACCEL_7_PW_ADDR                      0x20
 226 #define ST_ACCEL_7_PW_MASK                      0xc0
 227 #define ST_ACCEL_7_FS_AVL_2_GAIN                IIO_G_TO_M_S_2(488)
 228 #define ST_ACCEL_7_BDU_ADDR                     0x21
 229 #define ST_ACCEL_7_BDU_MASK                     0x40
 230 #define ST_ACCEL_7_DRDY_IRQ_ADDR                0x21
 231 #define ST_ACCEL_7_DRDY_IRQ_INT1_MASK           0x04
 232 #define ST_ACCEL_7_MULTIREAD_BIT                false
 233
 234 static const struct iio_chan_spec st_accel_8bit_channels[] = {
 235         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 236                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 237                         ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 8, 8,
 238                         ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1),
 239         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 240                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 241                         ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 8, 8,
 242                         ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1),
 243         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 244                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 245                         ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 8, 8,
 246                         ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1),
 247         IIO_CHAN_SOFT_TIMESTAMP(3)
 248 };
 249
 250 static const struct iio_chan_spec st_accel_12bit_channels[] = {
 251         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 252                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 253                         ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16,
 254                         ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
 255         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 256                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 257                         ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16,
 258                         ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
 259         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 260                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 261                         ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16,
 262                         ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
 263         IIO_CHAN_SOFT_TIMESTAMP(3)
 264 };
 265
 266 static const struct iio_chan_spec st_accel_16bit_channels[] = {
 267         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 268                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 269                         ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
 270                         ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
 271         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 272                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 273                         ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
 274                         ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
 275         ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
 276                         BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 277                         ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
 278                         ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
 279         IIO_CHAN_SOFT_TIMESTAMP(3)
 280 };
 281
 282 static const struct st_sensor_settings st_accel_sensors_settings[] = {
 283         {
 284                 .wai = ST_ACCEL_1_WAI_EXP,
 285                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 286                 .sensors_supported = {
 287                         [0] = LIS3DH_ACCEL_DEV_NAME,
 288                         [1] = LSM303DLHC_ACCEL_DEV_NAME,
 289                         [2] = LSM330D_ACCEL_DEV_NAME,
 290                         [3] = LSM330DL_ACCEL_DEV_NAME,
 291                         [4] = LSM330DLC_ACCEL_DEV_NAME,
 292                         [5] = LSM303AGR_ACCEL_DEV_NAME,
 293                         [6] = LIS2DH12_ACCEL_DEV_NAME,
 294                 },
 295                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 296                 .odr = {
 297                         .addr = ST_ACCEL_1_ODR_ADDR,
 298                         .mask = ST_ACCEL_1_ODR_MASK,
 299                         .odr_avl = {
 300                                 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
 301                                 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
 302                                 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
 303                                 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
 304                                 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
 305                                 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
 306                                 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
 307                                 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
 308                         },
 309                 },
 310                 .pw = {
 311                         .addr = ST_ACCEL_1_ODR_ADDR,
 312                         .mask = ST_ACCEL_1_ODR_MASK,
 313                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 314                 },
 315                 .enable_axis = {
 316                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 317                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 318                 },
 319                 .fs = {
 320                         .addr = ST_ACCEL_1_FS_ADDR,
 321                         .mask = ST_ACCEL_1_FS_MASK,
 322                         .fs_avl = {
 323                                 [0] = {
 324                                         .num = ST_ACCEL_FS_AVL_2G,
 325                                         .value = ST_ACCEL_1_FS_AVL_2_VAL,
 326                                         .gain = ST_ACCEL_1_FS_AVL_2_GAIN,
 327                                 },
 328                                 [1] = {
 329                                         .num = ST_ACCEL_FS_AVL_4G,
 330                                         .value = ST_ACCEL_1_FS_AVL_4_VAL,
 331                                         .gain = ST_ACCEL_1_FS_AVL_4_GAIN,
 332                                 },
 333                                 [2] = {
 334                                         .num = ST_ACCEL_FS_AVL_8G,
 335                                         .value = ST_ACCEL_1_FS_AVL_8_VAL,
 336                                         .gain = ST_ACCEL_1_FS_AVL_8_GAIN,
 337                                 },
 338                                 [3] = {
 339                                         .num = ST_ACCEL_FS_AVL_16G,
 340                                         .value = ST_ACCEL_1_FS_AVL_16_VAL,
 341                                         .gain = ST_ACCEL_1_FS_AVL_16_GAIN,
 342                                 },
 343                         },
 344                 },
 345                 .bdu = {
 346                         .addr = ST_ACCEL_1_BDU_ADDR,
 347                         .mask = ST_ACCEL_1_BDU_MASK,
 348                 },
 349                 /*
 350                  * Data Alignment Setting - needs to be set to get
 351                  * left-justified data like all other sensors.
 352                  */
 353                 .das = {
 354                         .addr = 0x21,
 355                         .mask = 0x01,
 356                 },
 357                 .drdy_irq = {
 358                         .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
 359                         .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
 360                         .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
 361                         .addr_ihl = ST_ACCEL_1_IHL_IRQ_ADDR,
 362                         .mask_ihl = ST_ACCEL_1_IHL_IRQ_MASK,
 363                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 364                 },
 365                 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
 366                 .bootime = 2,
 367         },
 368         {
 369                 .wai = ST_ACCEL_2_WAI_EXP,
 370                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 371                 .sensors_supported = {
 372                         [0] = LIS331DLH_ACCEL_DEV_NAME,
 373                         [1] = LSM303DL_ACCEL_DEV_NAME,
 374                         [2] = LSM303DLH_ACCEL_DEV_NAME,
 375                         [3] = LSM303DLM_ACCEL_DEV_NAME,
 376                 },
 377                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 378                 .odr = {
 379                         .addr = ST_ACCEL_2_ODR_ADDR,
 380                         .mask = ST_ACCEL_2_ODR_MASK,
 381                         .odr_avl = {
 382                                 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
 383                                 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
 384                                 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
 385                                 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
 386                         },
 387                 },
 388                 .pw = {
 389                         .addr = ST_ACCEL_2_PW_ADDR,
 390                         .mask = ST_ACCEL_2_PW_MASK,
 391                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 392                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 393                 },
 394                 .enable_axis = {
 395                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 396                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 397                 },
 398                 .fs = {
 399                         .addr = ST_ACCEL_2_FS_ADDR,
 400                         .mask = ST_ACCEL_2_FS_MASK,
 401                         .fs_avl = {
 402                                 [0] = {
 403                                         .num = ST_ACCEL_FS_AVL_2G,
 404                                         .value = ST_ACCEL_2_FS_AVL_2_VAL,
 405                                         .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
 406                                 },
 407                                 [1] = {
 408                                         .num = ST_ACCEL_FS_AVL_4G,
 409                                         .value = ST_ACCEL_2_FS_AVL_4_VAL,
 410                                         .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
 411                                 },
 412                                 [2] = {
 413                                         .num = ST_ACCEL_FS_AVL_8G,
 414                                         .value = ST_ACCEL_2_FS_AVL_8_VAL,
 415                                         .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
 416                                 },
 417                         },
 418                 },
 419                 .bdu = {
 420                         .addr = ST_ACCEL_2_BDU_ADDR,
 421                         .mask = ST_ACCEL_2_BDU_MASK,
 422                 },
 423                 .drdy_irq = {
 424                         .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
 425                         .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
 426                         .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
 427                         .addr_ihl = ST_ACCEL_2_IHL_IRQ_ADDR,
 428                         .mask_ihl = ST_ACCEL_2_IHL_IRQ_MASK,
 429                         .addr_od = ST_ACCEL_2_OD_IRQ_ADDR,
 430                         .mask_od = ST_ACCEL_2_OD_IRQ_MASK,
 431                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 432                 },
 433                 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
 434                 .bootime = 2,
 435         },
 436         {
 437                 .wai = ST_ACCEL_3_WAI_EXP,
 438                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 439                 .sensors_supported = {
 440                         [0] = LSM330_ACCEL_DEV_NAME,
 441                 },
 442                 .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
 443                 .odr = {
 444                         .addr = ST_ACCEL_3_ODR_ADDR,
 445                         .mask = ST_ACCEL_3_ODR_MASK,
 446                         .odr_avl = {
 447                                 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
 448                                 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
 449                                 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
 450                                 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
 451                                 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
 452                                 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
 453                                 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
 454                                 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
 455                                 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
 456                                 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
 457                         },
 458                 },
 459                 .pw = {
 460                         .addr = ST_ACCEL_3_ODR_ADDR,
 461                         .mask = ST_ACCEL_3_ODR_MASK,
 462                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 463                 },
 464                 .enable_axis = {
 465                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 466                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 467                 },
 468                 .fs = {
 469                         .addr = ST_ACCEL_3_FS_ADDR,
 470                         .mask = ST_ACCEL_3_FS_MASK,
 471                         .fs_avl = {
 472                                 [0] = {
 473                                         .num = ST_ACCEL_FS_AVL_2G,
 474                                         .value = ST_ACCEL_3_FS_AVL_2_VAL,
 475                                         .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
 476                                 },
 477                                 [1] = {
 478                                         .num = ST_ACCEL_FS_AVL_4G,
 479                                         .value = ST_ACCEL_3_FS_AVL_4_VAL,
 480                                         .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
 481                                 },
 482                                 [2] = {
 483                                         .num = ST_ACCEL_FS_AVL_6G,
 484                                         .value = ST_ACCEL_3_FS_AVL_6_VAL,
 485                                         .gain = ST_ACCEL_3_FS_AVL_6_GAIN,
 486                                 },
 487                                 [3] = {
 488                                         .num = ST_ACCEL_FS_AVL_8G,
 489                                         .value = ST_ACCEL_3_FS_AVL_8_VAL,
 490                                         .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
 491                                 },
 492                                 [4] = {
 493                                         .num = ST_ACCEL_FS_AVL_16G,
 494                                         .value = ST_ACCEL_3_FS_AVL_16_VAL,
 495                                         .gain = ST_ACCEL_3_FS_AVL_16_GAIN,
 496                                 },
 497                         },
 498                 },
 499                 .bdu = {
 500                         .addr = ST_ACCEL_3_BDU_ADDR,
 501                         .mask = ST_ACCEL_3_BDU_MASK,
 502                 },
 503                 .drdy_irq = {
 504                         .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
 505                         .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
 506                         .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
 507                         .addr_ihl = ST_ACCEL_3_IHL_IRQ_ADDR,
 508                         .mask_ihl = ST_ACCEL_3_IHL_IRQ_MASK,
 509                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 510                         .ig1 = {
 511                                 .en_addr = ST_ACCEL_3_IG1_EN_ADDR,
 512                                 .en_mask = ST_ACCEL_3_IG1_EN_MASK,
 513                         },
 514                 },
 515                 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
 516                 .bootime = 2,
 517         },
 518         {
 519                 .wai = ST_ACCEL_4_WAI_EXP,
 520                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 521                 .sensors_supported = {
 522                         [0] = LIS3LV02DL_ACCEL_DEV_NAME,
 523                 },
 524                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 525                 .odr = {
 526                         .addr = ST_ACCEL_4_ODR_ADDR,
 527                         .mask = ST_ACCEL_4_ODR_MASK,
 528                         .odr_avl = {
 529                                 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
 530                                 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
 531                                 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
 532                                 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
 533                         },
 534                 },
 535                 .pw = {
 536                         .addr = ST_ACCEL_4_PW_ADDR,
 537                         .mask = ST_ACCEL_4_PW_MASK,
 538                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 539                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 540                 },
 541                 .enable_axis = {
 542                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 543                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 544                 },
 545                 .fs = {
 546                         .addr = ST_ACCEL_4_FS_ADDR,
 547                         .mask = ST_ACCEL_4_FS_MASK,
 548                         .fs_avl = {
 549                                 [0] = {
 550                                         .num = ST_ACCEL_FS_AVL_2G,
 551                                         .value = ST_ACCEL_4_FS_AVL_2_VAL,
 552                                         .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
 553                                 },
 554                                 [1] = {
 555                                         .num = ST_ACCEL_FS_AVL_6G,
 556                                         .value = ST_ACCEL_4_FS_AVL_6_VAL,
 557                                         .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
 558                                 },
 559                         },
 560                 },
 561                 .bdu = {
 562                         .addr = ST_ACCEL_4_BDU_ADDR,
 563                         .mask = ST_ACCEL_4_BDU_MASK,
 564                 },
 565                 .drdy_irq = {
 566                         .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
 567                         .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
 568                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 569                 },
 570                 .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
 571                 .bootime = 2, /* guess */
 572         },
 573         {
 574                 .wai = ST_ACCEL_5_WAI_EXP,
 575                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 576                 .sensors_supported = {
 577                         [0] = LIS331DL_ACCEL_DEV_NAME,
 578                 },
 579                 .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
 580                 .odr = {
 581                         .addr = ST_ACCEL_5_ODR_ADDR,
 582                         .mask = ST_ACCEL_5_ODR_MASK,
 583                         .odr_avl = {
 584                                 { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
 585                                 { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
 586                         },
 587                 },
 588                 .pw = {
 589                         .addr = ST_ACCEL_5_PW_ADDR,
 590                         .mask = ST_ACCEL_5_PW_MASK,
 591                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 592                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 593                 },
 594                 .enable_axis = {
 595                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 596                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 597                 },
 598                 .fs = {
 599                         .addr = ST_ACCEL_5_FS_ADDR,
 600                         .mask = ST_ACCEL_5_FS_MASK,
 601                         .fs_avl = {
 602                                 [0] = {
 603                                         .num = ST_ACCEL_FS_AVL_2G,
 604                                         .value = ST_ACCEL_5_FS_AVL_2_VAL,
 605                                         .gain = ST_ACCEL_5_FS_AVL_2_GAIN,
 606                                 },
 607                                 [1] = {
 608                                         .num = ST_ACCEL_FS_AVL_8G,
 609                                         .value = ST_ACCEL_5_FS_AVL_8_VAL,
 610                                         .gain = ST_ACCEL_5_FS_AVL_8_GAIN,
 611                                 },
 612                         },
 613                 },
 614                 .drdy_irq = {
 615                         .addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
 616                         .mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
 617                         .mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
 618                         .addr_ihl = ST_ACCEL_5_IHL_IRQ_ADDR,
 619                         .mask_ihl = ST_ACCEL_5_IHL_IRQ_MASK,
 620                         .addr_od = ST_ACCEL_5_OD_IRQ_ADDR,
 621                         .mask_od = ST_ACCEL_5_OD_IRQ_MASK,
 622                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 623                 },
 624                 .multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
 625                 .bootime = 2, /* guess */
 626         },
 627         {
 628                 .wai = ST_ACCEL_6_WAI_EXP,
 629                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 630                 .sensors_supported = {
 631                         [0] = H3LIS331DL_DRIVER_NAME,
 632                 },
 633                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 634                 .odr = {
 635                         .addr = ST_ACCEL_6_ODR_ADDR,
 636                         .mask = ST_ACCEL_6_ODR_MASK,
 637                         .odr_avl = {
 638                                 { 50, ST_ACCEL_6_ODR_AVL_50HZ_VAL },
 639                                 { 100, ST_ACCEL_6_ODR_AVL_100HZ_VAL, },
 640                                 { 400, ST_ACCEL_6_ODR_AVL_400HZ_VAL, },
 641                                 { 1000, ST_ACCEL_6_ODR_AVL_1000HZ_VAL, },
 642                         },
 643                 },
 644                 .pw = {
 645                         .addr = ST_ACCEL_6_PW_ADDR,
 646                         .mask = ST_ACCEL_6_PW_MASK,
 647                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 648                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 649                 },
 650                 .enable_axis = {
 651                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 652                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 653                 },
 654                 .fs = {
 655                         .addr = ST_ACCEL_6_FS_ADDR,
 656                         .mask = ST_ACCEL_6_FS_MASK,
 657                         .fs_avl = {
 658                                 [0] = {
 659                                         .num = ST_ACCEL_FS_AVL_100G,
 660                                         .value = ST_ACCEL_6_FS_AVL_100_VAL,
 661                                         .gain = ST_ACCEL_6_FS_AVL_100_GAIN,
 662                                 },
 663                                 [1] = {
 664                                         .num = ST_ACCEL_FS_AVL_200G,
 665                                         .value = ST_ACCEL_6_FS_AVL_200_VAL,
 666                                         .gain = ST_ACCEL_6_FS_AVL_200_GAIN,
 667                                 },
 668                                 [2] = {
 669                                         .num = ST_ACCEL_FS_AVL_400G,
 670                                         .value = ST_ACCEL_6_FS_AVL_400_VAL,
 671                                         .gain = ST_ACCEL_6_FS_AVL_400_GAIN,
 672                                 },
 673                         },
 674                 },
 675                 .bdu = {
 676                         .addr = ST_ACCEL_6_BDU_ADDR,
 677                         .mask = ST_ACCEL_6_BDU_MASK,
 678                 },
 679                 .drdy_irq = {
 680                         .addr = ST_ACCEL_6_DRDY_IRQ_ADDR,
 681                         .mask_int1 = ST_ACCEL_6_DRDY_IRQ_INT1_MASK,
 682                         .mask_int2 = ST_ACCEL_6_DRDY_IRQ_INT2_MASK,
 683                         .addr_ihl = ST_ACCEL_6_IHL_IRQ_ADDR,
 684                         .mask_ihl = ST_ACCEL_6_IHL_IRQ_MASK,
 685                 },
 686                 .multi_read_bit = ST_ACCEL_6_MULTIREAD_BIT,
 687                 .bootime = 2,
 688         },
 689         {
 690                 /* No WAI register present */
 691                 .sensors_supported = {
 692                         [0] = LIS3L02DQ_ACCEL_DEV_NAME,
 693                 },
 694                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 695                 .odr = {
 696                         .addr = ST_ACCEL_7_ODR_ADDR,
 697                         .mask = ST_ACCEL_7_ODR_MASK,
 698                         .odr_avl = {
 699                                 { 280, ST_ACCEL_7_ODR_AVL_280HZ_VAL, },
 700                                 { 560, ST_ACCEL_7_ODR_AVL_560HZ_VAL, },
 701                                 { 1120, ST_ACCEL_7_ODR_AVL_1120HZ_VAL, },
 702                                 { 4480, ST_ACCEL_7_ODR_AVL_4480HZ_VAL, },
 703                         },
 704                 },
 705                 .pw = {
 706                         .addr = ST_ACCEL_7_PW_ADDR,
 707                         .mask = ST_ACCEL_7_PW_MASK,
 708                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 709                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 710                 },
 711                 .enable_axis = {
 712                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 713                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 714                 },
 715                 .fs = {
 716                         .fs_avl = {
 717                                 [0] = {
 718                                         .num = ST_ACCEL_FS_AVL_2G,
 719                                         .gain = ST_ACCEL_7_FS_AVL_2_GAIN,
 720                                 },
 721                         },
 722                 },
 723                 /*
 724                  * The part has a BDU bit but if set the data is never
 725                  * updated so don't set it.
 726                  */
 727                 .bdu = {
 728                 },
 729                 .drdy_irq = {
 730                         .addr = ST_ACCEL_7_DRDY_IRQ_ADDR,
 731                         .mask_int1 = ST_ACCEL_7_DRDY_IRQ_INT1_MASK,
 732                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 733                 },
 734                 .multi_read_bit = ST_ACCEL_7_MULTIREAD_BIT,
 735                 .bootime = 2,
 736         },
 737 };
 738
 739 static int st_accel_read_raw(struct iio_dev *indio_dev,
 740                         struct iio_chan_spec const *ch, int *val,
 741                                                         int *val2, long mask)
 742 {
 743         int err;
 744         struct st_sensor_data *adata = iio_priv(indio_dev);
 745
 746         switch (mask) {
 747         case IIO_CHAN_INFO_RAW:
 748                 err = st_sensors_read_info_raw(indio_dev, ch, val);
 749                 if (err < 0)
 750                         goto read_error;
 751
 752                 return IIO_VAL_INT;
 753         case IIO_CHAN_INFO_SCALE:
 754                 *val = adata->current_fullscale->gain / 1000000;
 755                 *val2 = adata->current_fullscale->gain % 1000000;
 756                 return IIO_VAL_INT_PLUS_MICRO;
 757         case IIO_CHAN_INFO_SAMP_FREQ:
 758                 *val = adata->odr;
 759                 return IIO_VAL_INT;
 760         default:
 761                 return -EINVAL;
 762         }
 763
 764 read_error:
 765         return err;
 766 }
 767
 768 static int st_accel_write_raw(struct iio_dev *indio_dev,
 769                 struct iio_chan_spec const *chan, int val, int val2, long mask)
 770 {
 771         int err;
 772
 773         switch (mask) {
 774         case IIO_CHAN_INFO_SCALE: {
 775                 int gain;
 776
 777                 gain = val * 1000000 + val2;
 778                 err = st_sensors_set_fullscale_by_gain(indio_dev, gain);
 779                 break;
 780         }
 781         case IIO_CHAN_INFO_SAMP_FREQ:
 782                 if (val2)
 783                         return -EINVAL;
 784                 mutex_lock(&indio_dev->mlock);
 785                 err = st_sensors_set_odr(indio_dev, val);
 786                 mutex_unlock(&indio_dev->mlock);
 787                 return err;
 788         default:
 789                 return -EINVAL;
 790         }
 791
 792         return err;
 793 }
 794
 795 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
 796 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
 797
 798 static struct attribute *st_accel_attributes[] = {
 799         &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 800         &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
 801         NULL,
 802 };
 803
 804 static const struct attribute_group st_accel_attribute_group = {
 805         .attrs = st_accel_attributes,
 806 };
 807
 808 static const struct iio_info accel_info = {
 809         .driver_module = THIS_MODULE,
 810         .attrs = &st_accel_attribute_group,
 811         .read_raw = &st_accel_read_raw,
 812         .write_raw = &st_accel_write_raw,
 813         .debugfs_reg_access = &st_sensors_debugfs_reg_access,
 814 };
 815
 816 #ifdef CONFIG_IIO_TRIGGER
 817 static const struct iio_trigger_ops st_accel_trigger_ops = {
 818         .owner = THIS_MODULE,
 819         .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
 820         .validate_device = st_sensors_validate_device,
 821 };
 822 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
 823 #else
 824 #define ST_ACCEL_TRIGGER_OPS NULL
 825 #endif
 826
 827 int st_accel_common_probe(struct iio_dev *indio_dev)
 828 {
 829         struct st_sensor_data *adata = iio_priv(indio_dev);
 830         struct st_sensors_platform_data *pdata =
 831                 (struct st_sensors_platform_data *)adata->dev->platform_data;
 832         int irq = adata->get_irq_data_ready(indio_dev);
 833         int err;
 834
 835         indio_dev->modes = INDIO_DIRECT_MODE;
 836         indio_dev->info = &accel_info;
 837         mutex_init(&adata->tb.buf_lock);
 838
 839         err = st_sensors_power_enable(indio_dev);
 840         if (err)
 841                 return err;
 842
 843         err = st_sensors_check_device_support(indio_dev,
 844                                         ARRAY_SIZE(st_accel_sensors_settings),
 845                                         st_accel_sensors_settings);
 846         if (err < 0)
 847                 goto st_accel_power_off;
 848
 849         adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
 850         adata->multiread_bit = adata->sensor_settings->multi_read_bit;
 851         indio_dev->channels = adata->sensor_settings->ch;
 852         indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 853
 854         adata->current_fullscale = (struct st_sensor_fullscale_avl *)
 855                                         &adata->sensor_settings->fs.fs_avl[0];
 856         adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
 857
 858         if (!pdata)
 859                 pdata = (struct st_sensors_platform_data *)&default_accel_pdata;
 860
 861         err = st_sensors_init_sensor(indio_dev, pdata);
 862         if (err < 0)
 863                 goto st_accel_power_off;
 864
 865         err = st_accel_allocate_ring(indio_dev);
 866         if (err < 0)
 867                 goto st_accel_power_off;
 868
 869         if (irq > 0) {
 870                 err = st_sensors_allocate_trigger(indio_dev,
 871                                                  ST_ACCEL_TRIGGER_OPS);
 872                 if (err < 0)
 873                         goto st_accel_probe_trigger_error;
 874         }
 875
 876         err = iio_device_register(indio_dev);
 877         if (err)
 878                 goto st_accel_device_register_error;
 879
 880         dev_info(&indio_dev->dev, "registered accelerometer %s\n",
 881                  indio_dev->name);
 882
 883         return 0;
 884
 885 st_accel_device_register_error:
 886         if (irq > 0)
 887                 st_sensors_deallocate_trigger(indio_dev);
 888 st_accel_probe_trigger_error:
 889         st_accel_deallocate_ring(indio_dev);
 890 st_accel_power_off:
 891         st_sensors_power_disable(indio_dev);
 892
 893         return err;
 894 }
 895 EXPORT_SYMBOL(st_accel_common_probe);
 896
 897 void st_accel_common_remove(struct iio_dev *indio_dev)
 898 {
 899         struct st_sensor_data *adata = iio_priv(indio_dev);
 900
 901         st_sensors_power_disable(indio_dev);
 902
 903         iio_device_unregister(indio_dev);
 904         if (adata->get_irq_data_ready(indio_dev) > 0)
 905                 st_sensors_deallocate_trigger(indio_dev);
 906
 907         st_accel_deallocate_ring(indio_dev);
 908 }
 909 EXPORT_SYMBOL(st_accel_common_remove);
 910
 911 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 912 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
 913 MODULE_LICENSE("GPL v2");