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(1024)
 158 #define ST_ACCEL_4_FS_AVL_6_GAIN                IIO_G_TO_M_S_2(340)
 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                 .drdy_irq = {
 350                         .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
 351                         .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
 352                         .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
 353                         .addr_ihl = ST_ACCEL_1_IHL_IRQ_ADDR,
 354                         .mask_ihl = ST_ACCEL_1_IHL_IRQ_MASK,
 355                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 356                 },
 357                 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
 358                 .bootime = 2,
 359         },
 360         {
 361                 .wai = ST_ACCEL_2_WAI_EXP,
 362                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 363                 .sensors_supported = {
 364                         [0] = LIS331DLH_ACCEL_DEV_NAME,
 365                         [1] = LSM303DL_ACCEL_DEV_NAME,
 366                         [2] = LSM303DLH_ACCEL_DEV_NAME,
 367                         [3] = LSM303DLM_ACCEL_DEV_NAME,
 368                 },
 369                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 370                 .odr = {
 371                         .addr = ST_ACCEL_2_ODR_ADDR,
 372                         .mask = ST_ACCEL_2_ODR_MASK,
 373                         .odr_avl = {
 374                                 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
 375                                 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
 376                                 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
 377                                 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
 378                         },
 379                 },
 380                 .pw = {
 381                         .addr = ST_ACCEL_2_PW_ADDR,
 382                         .mask = ST_ACCEL_2_PW_MASK,
 383                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 384                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 385                 },
 386                 .enable_axis = {
 387                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 388                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 389                 },
 390                 .fs = {
 391                         .addr = ST_ACCEL_2_FS_ADDR,
 392                         .mask = ST_ACCEL_2_FS_MASK,
 393                         .fs_avl = {
 394                                 [0] = {
 395                                         .num = ST_ACCEL_FS_AVL_2G,
 396                                         .value = ST_ACCEL_2_FS_AVL_2_VAL,
 397                                         .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
 398                                 },
 399                                 [1] = {
 400                                         .num = ST_ACCEL_FS_AVL_4G,
 401                                         .value = ST_ACCEL_2_FS_AVL_4_VAL,
 402                                         .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
 403                                 },
 404                                 [2] = {
 405                                         .num = ST_ACCEL_FS_AVL_8G,
 406                                         .value = ST_ACCEL_2_FS_AVL_8_VAL,
 407                                         .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
 408                                 },
 409                         },
 410                 },
 411                 .bdu = {
 412                         .addr = ST_ACCEL_2_BDU_ADDR,
 413                         .mask = ST_ACCEL_2_BDU_MASK,
 414                 },
 415                 .drdy_irq = {
 416                         .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
 417                         .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
 418                         .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
 419                         .addr_ihl = ST_ACCEL_2_IHL_IRQ_ADDR,
 420                         .mask_ihl = ST_ACCEL_2_IHL_IRQ_MASK,
 421                         .addr_od = ST_ACCEL_2_OD_IRQ_ADDR,
 422                         .mask_od = ST_ACCEL_2_OD_IRQ_MASK,
 423                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 424                 },
 425                 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
 426                 .bootime = 2,
 427         },
 428         {
 429                 .wai = ST_ACCEL_3_WAI_EXP,
 430                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 431                 .sensors_supported = {
 432                         [0] = LSM330_ACCEL_DEV_NAME,
 433                 },
 434                 .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
 435                 .odr = {
 436                         .addr = ST_ACCEL_3_ODR_ADDR,
 437                         .mask = ST_ACCEL_3_ODR_MASK,
 438                         .odr_avl = {
 439                                 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
 440                                 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
 441                                 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
 442                                 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
 443                                 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
 444                                 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
 445                                 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
 446                                 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
 447                                 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
 448                                 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
 449                         },
 450                 },
 451                 .pw = {
 452                         .addr = ST_ACCEL_3_ODR_ADDR,
 453                         .mask = ST_ACCEL_3_ODR_MASK,
 454                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 455                 },
 456                 .enable_axis = {
 457                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 458                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 459                 },
 460                 .fs = {
 461                         .addr = ST_ACCEL_3_FS_ADDR,
 462                         .mask = ST_ACCEL_3_FS_MASK,
 463                         .fs_avl = {
 464                                 [0] = {
 465                                         .num = ST_ACCEL_FS_AVL_2G,
 466                                         .value = ST_ACCEL_3_FS_AVL_2_VAL,
 467                                         .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
 468                                 },
 469                                 [1] = {
 470                                         .num = ST_ACCEL_FS_AVL_4G,
 471                                         .value = ST_ACCEL_3_FS_AVL_4_VAL,
 472                                         .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
 473                                 },
 474                                 [2] = {
 475                                         .num = ST_ACCEL_FS_AVL_6G,
 476                                         .value = ST_ACCEL_3_FS_AVL_6_VAL,
 477                                         .gain = ST_ACCEL_3_FS_AVL_6_GAIN,
 478                                 },
 479                                 [3] = {
 480                                         .num = ST_ACCEL_FS_AVL_8G,
 481                                         .value = ST_ACCEL_3_FS_AVL_8_VAL,
 482                                         .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
 483                                 },
 484                                 [4] = {
 485                                         .num = ST_ACCEL_FS_AVL_16G,
 486                                         .value = ST_ACCEL_3_FS_AVL_16_VAL,
 487                                         .gain = ST_ACCEL_3_FS_AVL_16_GAIN,
 488                                 },
 489                         },
 490                 },
 491                 .bdu = {
 492                         .addr = ST_ACCEL_3_BDU_ADDR,
 493                         .mask = ST_ACCEL_3_BDU_MASK,
 494                 },
 495                 .drdy_irq = {
 496                         .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
 497                         .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
 498                         .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
 499                         .addr_ihl = ST_ACCEL_3_IHL_IRQ_ADDR,
 500                         .mask_ihl = ST_ACCEL_3_IHL_IRQ_MASK,
 501                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 502                         .ig1 = {
 503                                 .en_addr = ST_ACCEL_3_IG1_EN_ADDR,
 504                                 .en_mask = ST_ACCEL_3_IG1_EN_MASK,
 505                         },
 506                 },
 507                 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
 508                 .bootime = 2,
 509         },
 510         {
 511                 .wai = ST_ACCEL_4_WAI_EXP,
 512                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 513                 .sensors_supported = {
 514                         [0] = LIS3LV02DL_ACCEL_DEV_NAME,
 515                 },
 516                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 517                 .odr = {
 518                         .addr = ST_ACCEL_4_ODR_ADDR,
 519                         .mask = ST_ACCEL_4_ODR_MASK,
 520                         .odr_avl = {
 521                                 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
 522                                 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
 523                                 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
 524                                 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
 525                         },
 526                 },
 527                 .pw = {
 528                         .addr = ST_ACCEL_4_PW_ADDR,
 529                         .mask = ST_ACCEL_4_PW_MASK,
 530                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 531                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 532                 },
 533                 .enable_axis = {
 534                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 535                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 536                 },
 537                 .fs = {
 538                         .addr = ST_ACCEL_4_FS_ADDR,
 539                         .mask = ST_ACCEL_4_FS_MASK,
 540                         .fs_avl = {
 541                                 [0] = {
 542                                         .num = ST_ACCEL_FS_AVL_2G,
 543                                         .value = ST_ACCEL_4_FS_AVL_2_VAL,
 544                                         .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
 545                                 },
 546                                 [1] = {
 547                                         .num = ST_ACCEL_FS_AVL_6G,
 548                                         .value = ST_ACCEL_4_FS_AVL_6_VAL,
 549                                         .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
 550                                 },
 551                         },
 552                 },
 553                 .bdu = {
 554                         .addr = ST_ACCEL_4_BDU_ADDR,
 555                         .mask = ST_ACCEL_4_BDU_MASK,
 556                 },
 557                 .drdy_irq = {
 558                         .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
 559                         .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
 560                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 561                 },
 562                 .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
 563                 .bootime = 2, /* guess */
 564         },
 565         {
 566                 .wai = ST_ACCEL_5_WAI_EXP,
 567                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 568                 .sensors_supported = {
 569                         [0] = LIS331DL_ACCEL_DEV_NAME,
 570                 },
 571                 .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
 572                 .odr = {
 573                         .addr = ST_ACCEL_5_ODR_ADDR,
 574                         .mask = ST_ACCEL_5_ODR_MASK,
 575                         .odr_avl = {
 576                                 { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
 577                                 { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
 578                         },
 579                 },
 580                 .pw = {
 581                         .addr = ST_ACCEL_5_PW_ADDR,
 582                         .mask = ST_ACCEL_5_PW_MASK,
 583                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 584                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 585                 },
 586                 .enable_axis = {
 587                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 588                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 589                 },
 590                 .fs = {
 591                         .addr = ST_ACCEL_5_FS_ADDR,
 592                         .mask = ST_ACCEL_5_FS_MASK,
 593                         .fs_avl = {
 594                                 [0] = {
 595                                         .num = ST_ACCEL_FS_AVL_2G,
 596                                         .value = ST_ACCEL_5_FS_AVL_2_VAL,
 597                                         .gain = ST_ACCEL_5_FS_AVL_2_GAIN,
 598                                 },
 599                                 [1] = {
 600                                         .num = ST_ACCEL_FS_AVL_8G,
 601                                         .value = ST_ACCEL_5_FS_AVL_8_VAL,
 602                                         .gain = ST_ACCEL_5_FS_AVL_8_GAIN,
 603                                 },
 604                         },
 605                 },
 606                 .drdy_irq = {
 607                         .addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
 608                         .mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
 609                         .mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
 610                         .addr_ihl = ST_ACCEL_5_IHL_IRQ_ADDR,
 611                         .mask_ihl = ST_ACCEL_5_IHL_IRQ_MASK,
 612                         .addr_od = ST_ACCEL_5_OD_IRQ_ADDR,
 613                         .mask_od = ST_ACCEL_5_OD_IRQ_MASK,
 614                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 615                 },
 616                 .multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
 617                 .bootime = 2, /* guess */
 618         },
 619         {
 620                 .wai = ST_ACCEL_6_WAI_EXP,
 621                 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 622                 .sensors_supported = {
 623                         [0] = H3LIS331DL_DRIVER_NAME,
 624                 },
 625                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 626                 .odr = {
 627                         .addr = ST_ACCEL_6_ODR_ADDR,
 628                         .mask = ST_ACCEL_6_ODR_MASK,
 629                         .odr_avl = {
 630                                 { 50, ST_ACCEL_6_ODR_AVL_50HZ_VAL },
 631                                 { 100, ST_ACCEL_6_ODR_AVL_100HZ_VAL, },
 632                                 { 400, ST_ACCEL_6_ODR_AVL_400HZ_VAL, },
 633                                 { 1000, ST_ACCEL_6_ODR_AVL_1000HZ_VAL, },
 634                         },
 635                 },
 636                 .pw = {
 637                         .addr = ST_ACCEL_6_PW_ADDR,
 638                         .mask = ST_ACCEL_6_PW_MASK,
 639                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 640                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 641                 },
 642                 .enable_axis = {
 643                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 644                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 645                 },
 646                 .fs = {
 647                         .addr = ST_ACCEL_6_FS_ADDR,
 648                         .mask = ST_ACCEL_6_FS_MASK,
 649                         .fs_avl = {
 650                                 [0] = {
 651                                         .num = ST_ACCEL_FS_AVL_100G,
 652                                         .value = ST_ACCEL_6_FS_AVL_100_VAL,
 653                                         .gain = ST_ACCEL_6_FS_AVL_100_GAIN,
 654                                 },
 655                                 [1] = {
 656                                         .num = ST_ACCEL_FS_AVL_200G,
 657                                         .value = ST_ACCEL_6_FS_AVL_200_VAL,
 658                                         .gain = ST_ACCEL_6_FS_AVL_200_GAIN,
 659                                 },
 660                                 [2] = {
 661                                         .num = ST_ACCEL_FS_AVL_400G,
 662                                         .value = ST_ACCEL_6_FS_AVL_400_VAL,
 663                                         .gain = ST_ACCEL_6_FS_AVL_400_GAIN,
 664                                 },
 665                         },
 666                 },
 667                 .bdu = {
 668                         .addr = ST_ACCEL_6_BDU_ADDR,
 669                         .mask = ST_ACCEL_6_BDU_MASK,
 670                 },
 671                 .drdy_irq = {
 672                         .addr = ST_ACCEL_6_DRDY_IRQ_ADDR,
 673                         .mask_int1 = ST_ACCEL_6_DRDY_IRQ_INT1_MASK,
 674                         .mask_int2 = ST_ACCEL_6_DRDY_IRQ_INT2_MASK,
 675                         .addr_ihl = ST_ACCEL_6_IHL_IRQ_ADDR,
 676                         .mask_ihl = ST_ACCEL_6_IHL_IRQ_MASK,
 677                 },
 678                 .multi_read_bit = ST_ACCEL_6_MULTIREAD_BIT,
 679                 .bootime = 2,
 680         },
 681         {
 682                 /* No WAI register present */
 683                 .sensors_supported = {
 684                         [0] = LIS3L02DQ_ACCEL_DEV_NAME,
 685                 },
 686                 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
 687                 .odr = {
 688                         .addr = ST_ACCEL_7_ODR_ADDR,
 689                         .mask = ST_ACCEL_7_ODR_MASK,
 690                         .odr_avl = {
 691                                 { 280, ST_ACCEL_7_ODR_AVL_280HZ_VAL, },
 692                                 { 560, ST_ACCEL_7_ODR_AVL_560HZ_VAL, },
 693                                 { 1120, ST_ACCEL_7_ODR_AVL_1120HZ_VAL, },
 694                                 { 4480, ST_ACCEL_7_ODR_AVL_4480HZ_VAL, },
 695                         },
 696                 },
 697                 .pw = {
 698                         .addr = ST_ACCEL_7_PW_ADDR,
 699                         .mask = ST_ACCEL_7_PW_MASK,
 700                         .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
 701                         .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
 702                 },
 703                 .enable_axis = {
 704                         .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
 705                         .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
 706                 },
 707                 .fs = {
 708                         .fs_avl = {
 709                                 [0] = {
 710                                         .num = ST_ACCEL_FS_AVL_2G,
 711                                         .gain = ST_ACCEL_7_FS_AVL_2_GAIN,
 712                                 },
 713                         },
 714                 },
 715                 /*
 716                  * The part has a BDU bit but if set the data is never
 717                  * updated so don't set it.
 718                  */
 719                 .bdu = {
 720                 },
 721                 .drdy_irq = {
 722                         .addr = ST_ACCEL_7_DRDY_IRQ_ADDR,
 723                         .mask_int1 = ST_ACCEL_7_DRDY_IRQ_INT1_MASK,
 724                         .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
 725                 },
 726                 .multi_read_bit = ST_ACCEL_7_MULTIREAD_BIT,
 727                 .bootime = 2,
 728         },
 729 };
 730
 731 static int st_accel_read_raw(struct iio_dev *indio_dev,
 732                         struct iio_chan_spec const *ch, int *val,
 733                                                         int *val2, long mask)
 734 {
 735         int err;
 736         struct st_sensor_data *adata = iio_priv(indio_dev);
 737
 738         switch (mask) {
 739         case IIO_CHAN_INFO_RAW:
 740                 err = st_sensors_read_info_raw(indio_dev, ch, val);
 741                 if (err < 0)
 742                         goto read_error;
 743
 744                 return IIO_VAL_INT;
 745         case IIO_CHAN_INFO_SCALE:
 746                 *val = 0;
 747                 *val2 = adata->current_fullscale->gain;
 748                 return IIO_VAL_INT_PLUS_MICRO;
 749         case IIO_CHAN_INFO_SAMP_FREQ:
 750                 *val = adata->odr;
 751                 return IIO_VAL_INT;
 752         default:
 753                 return -EINVAL;
 754         }
 755
 756 read_error:
 757         return err;
 758 }
 759
 760 static int st_accel_write_raw(struct iio_dev *indio_dev,
 761                 struct iio_chan_spec const *chan, int val, int val2, long mask)
 762 {
 763         int err;
 764
 765         switch (mask) {
 766         case IIO_CHAN_INFO_SCALE:
 767                 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
 768                 break;
 769         case IIO_CHAN_INFO_SAMP_FREQ:
 770                 if (val2)
 771                         return -EINVAL;
 772                 mutex_lock(&indio_dev->mlock);
 773                 err = st_sensors_set_odr(indio_dev, val);
 774                 mutex_unlock(&indio_dev->mlock);
 775                 return err;
 776         default:
 777                 return -EINVAL;
 778         }
 779
 780         return err;
 781 }
 782
 783 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
 784 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
 785
 786 static struct attribute *st_accel_attributes[] = {
 787         &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 788         &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
 789         NULL,
 790 };
 791
 792 static const struct attribute_group st_accel_attribute_group = {
 793         .attrs = st_accel_attributes,
 794 };
 795
 796 static const struct iio_info accel_info = {
 797         .driver_module = THIS_MODULE,
 798         .attrs = &st_accel_attribute_group,
 799         .read_raw = &st_accel_read_raw,
 800         .write_raw = &st_accel_write_raw,
 801         .debugfs_reg_access = &st_sensors_debugfs_reg_access,
 802 };
 803
 804 #ifdef CONFIG_IIO_TRIGGER
 805 static const struct iio_trigger_ops st_accel_trigger_ops = {
 806         .owner = THIS_MODULE,
 807         .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
 808         .validate_device = st_sensors_validate_device,
 809 };
 810 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
 811 #else
 812 #define ST_ACCEL_TRIGGER_OPS NULL
 813 #endif
 814
 815 int st_accel_common_probe(struct iio_dev *indio_dev)
 816 {
 817         struct st_sensor_data *adata = iio_priv(indio_dev);
 818         int irq = adata->get_irq_data_ready(indio_dev);
 819         int err;
 820
 821         indio_dev->modes = INDIO_DIRECT_MODE;
 822         indio_dev->info = &accel_info;
 823         mutex_init(&adata->tb.buf_lock);
 824
 825         err = st_sensors_power_enable(indio_dev);
 826         if (err)
 827                 return err;
 828
 829         err = st_sensors_check_device_support(indio_dev,
 830                                         ARRAY_SIZE(st_accel_sensors_settings),
 831                                         st_accel_sensors_settings);
 832         if (err < 0)
 833                 goto st_accel_power_off;
 834
 835         adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
 836         adata->multiread_bit = adata->sensor_settings->multi_read_bit;
 837         indio_dev->channels = adata->sensor_settings->ch;
 838         indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 839
 840         adata->current_fullscale = (struct st_sensor_fullscale_avl *)
 841                                         &adata->sensor_settings->fs.fs_avl[0];
 842         adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
 843
 844         if (!adata->dev->platform_data)
 845                 adata->dev->platform_data =
 846                         (struct st_sensors_platform_data *)&default_accel_pdata;
 847
 848         err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data);
 849         if (err < 0)
 850                 goto st_accel_power_off;
 851
 852         err = st_accel_allocate_ring(indio_dev);
 853         if (err < 0)
 854                 goto st_accel_power_off;
 855
 856         if (irq > 0) {
 857                 err = st_sensors_allocate_trigger(indio_dev,
 858                                                  ST_ACCEL_TRIGGER_OPS);
 859                 if (err < 0)
 860                         goto st_accel_probe_trigger_error;
 861         }
 862
 863         err = iio_device_register(indio_dev);
 864         if (err)
 865                 goto st_accel_device_register_error;
 866
 867         dev_info(&indio_dev->dev, "registered accelerometer %s\n",
 868                  indio_dev->name);
 869
 870         return 0;
 871
 872 st_accel_device_register_error:
 873         if (irq > 0)
 874                 st_sensors_deallocate_trigger(indio_dev);
 875 st_accel_probe_trigger_error:
 876         st_accel_deallocate_ring(indio_dev);
 877 st_accel_power_off:
 878         st_sensors_power_disable(indio_dev);
 879
 880         return err;
 881 }
 882 EXPORT_SYMBOL(st_accel_common_probe);
 883
 884 void st_accel_common_remove(struct iio_dev *indio_dev)
 885 {
 886         struct st_sensor_data *adata = iio_priv(indio_dev);
 887
 888         st_sensors_power_disable(indio_dev);
 889
 890         iio_device_unregister(indio_dev);
 891         if (adata->get_irq_data_ready(indio_dev) > 0)
 892                 st_sensors_deallocate_trigger(indio_dev);
 893
 894         st_accel_deallocate_ring(indio_dev);
 895 }
 896 EXPORT_SYMBOL(st_accel_common_remove);
 897
 898 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 899 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
 900 MODULE_LICENSE("GPL v2");