Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 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> |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 23 | #include <linux/iio/trigger.h> |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 24 | #include <linux/iio/buffer.h> |
| 25 | |
| 26 | #include <linux/iio/common/st_sensors.h> |
| 27 | #include "st_accel.h" |
| 28 | |
Denis CIOCCA | 607a568 | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 29 | #define ST_ACCEL_NUMBER_DATA_CHANNELS 3 |
| 30 | |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 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 |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 68 | #define ST_ACCEL_1_DRDY_IRQ_INT1_MASK 0x10 |
| 69 | #define ST_ACCEL_1_DRDY_IRQ_INT2_MASK 0x08 |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 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 |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 93 | #define ST_ACCEL_2_DRDY_IRQ_INT1_MASK 0x02 |
| 94 | #define ST_ACCEL_2_DRDY_IRQ_INT2_MASK 0x10 |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 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 |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 126 | #define ST_ACCEL_3_DRDY_IRQ_INT1_MASK 0x80 |
| 127 | #define ST_ACCEL_3_DRDY_IRQ_INT2_MASK 0x00 |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 128 | #define ST_ACCEL_3_IG1_EN_ADDR 0x23 |
| 129 | #define ST_ACCEL_3_IG1_EN_MASK 0x08 |
| 130 | #define ST_ACCEL_3_MULTIREAD_BIT false |
| 131 | |
| 132 | static const struct iio_chan_spec st_accel_12bit_channels[] = { |
Denis CIOCCA | 762011d | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 133 | ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| 134 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 135 | ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16, |
| 136 | ST_ACCEL_DEFAULT_OUT_X_L_ADDR), |
| 137 | ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| 138 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 139 | ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16, |
| 140 | ST_ACCEL_DEFAULT_OUT_Y_L_ADDR), |
| 141 | ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| 142 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 143 | ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16, |
| 144 | ST_ACCEL_DEFAULT_OUT_Z_L_ADDR), |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 145 | IIO_CHAN_SOFT_TIMESTAMP(3) |
| 146 | }; |
| 147 | |
| 148 | static const struct iio_chan_spec st_accel_16bit_channels[] = { |
Denis CIOCCA | 762011d | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 149 | ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| 150 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 151 | ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, |
| 152 | ST_ACCEL_DEFAULT_OUT_X_L_ADDR), |
| 153 | ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| 154 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 155 | ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, |
| 156 | ST_ACCEL_DEFAULT_OUT_Y_L_ADDR), |
| 157 | ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, |
| 158 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 159 | ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, |
| 160 | ST_ACCEL_DEFAULT_OUT_Z_L_ADDR), |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 161 | IIO_CHAN_SOFT_TIMESTAMP(3) |
| 162 | }; |
| 163 | |
| 164 | static const struct st_sensors st_accel_sensors[] = { |
| 165 | { |
| 166 | .wai = ST_ACCEL_1_WAI_EXP, |
| 167 | .sensors_supported = { |
| 168 | [0] = LIS3DH_ACCEL_DEV_NAME, |
| 169 | [1] = LSM303DLHC_ACCEL_DEV_NAME, |
| 170 | [2] = LSM330D_ACCEL_DEV_NAME, |
| 171 | [3] = LSM330DL_ACCEL_DEV_NAME, |
| 172 | [4] = LSM330DLC_ACCEL_DEV_NAME, |
| 173 | }, |
| 174 | .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| 175 | .odr = { |
| 176 | .addr = ST_ACCEL_1_ODR_ADDR, |
| 177 | .mask = ST_ACCEL_1_ODR_MASK, |
| 178 | .odr_avl = { |
| 179 | { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, }, |
| 180 | { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, }, |
| 181 | { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, }, |
| 182 | { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, }, |
| 183 | { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, }, |
| 184 | { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, }, |
| 185 | { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, }, |
| 186 | { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, }, |
| 187 | }, |
| 188 | }, |
| 189 | .pw = { |
| 190 | .addr = ST_ACCEL_1_ODR_ADDR, |
| 191 | .mask = ST_ACCEL_1_ODR_MASK, |
| 192 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| 193 | }, |
| 194 | .enable_axis = { |
| 195 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| 196 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| 197 | }, |
| 198 | .fs = { |
| 199 | .addr = ST_ACCEL_1_FS_ADDR, |
| 200 | .mask = ST_ACCEL_1_FS_MASK, |
| 201 | .fs_avl = { |
| 202 | [0] = { |
| 203 | .num = ST_ACCEL_FS_AVL_2G, |
| 204 | .value = ST_ACCEL_1_FS_AVL_2_VAL, |
| 205 | .gain = ST_ACCEL_1_FS_AVL_2_GAIN, |
| 206 | }, |
| 207 | [1] = { |
| 208 | .num = ST_ACCEL_FS_AVL_4G, |
| 209 | .value = ST_ACCEL_1_FS_AVL_4_VAL, |
| 210 | .gain = ST_ACCEL_1_FS_AVL_4_GAIN, |
| 211 | }, |
| 212 | [2] = { |
| 213 | .num = ST_ACCEL_FS_AVL_8G, |
| 214 | .value = ST_ACCEL_1_FS_AVL_8_VAL, |
| 215 | .gain = ST_ACCEL_1_FS_AVL_8_GAIN, |
| 216 | }, |
| 217 | [3] = { |
| 218 | .num = ST_ACCEL_FS_AVL_16G, |
| 219 | .value = ST_ACCEL_1_FS_AVL_16_VAL, |
| 220 | .gain = ST_ACCEL_1_FS_AVL_16_GAIN, |
| 221 | }, |
| 222 | }, |
| 223 | }, |
| 224 | .bdu = { |
| 225 | .addr = ST_ACCEL_1_BDU_ADDR, |
| 226 | .mask = ST_ACCEL_1_BDU_MASK, |
| 227 | }, |
| 228 | .drdy_irq = { |
| 229 | .addr = ST_ACCEL_1_DRDY_IRQ_ADDR, |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 230 | .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK, |
| 231 | .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK, |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 232 | }, |
| 233 | .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT, |
| 234 | .bootime = 2, |
| 235 | }, |
| 236 | { |
| 237 | .wai = ST_ACCEL_2_WAI_EXP, |
| 238 | .sensors_supported = { |
| 239 | [0] = LIS331DLH_ACCEL_DEV_NAME, |
| 240 | [1] = LSM303DL_ACCEL_DEV_NAME, |
| 241 | [2] = LSM303DLH_ACCEL_DEV_NAME, |
| 242 | [3] = LSM303DLM_ACCEL_DEV_NAME, |
| 243 | }, |
| 244 | .ch = (struct iio_chan_spec *)st_accel_12bit_channels, |
| 245 | .odr = { |
| 246 | .addr = ST_ACCEL_2_ODR_ADDR, |
| 247 | .mask = ST_ACCEL_2_ODR_MASK, |
| 248 | .odr_avl = { |
| 249 | { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, }, |
| 250 | { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, }, |
| 251 | { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, }, |
| 252 | { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, }, |
| 253 | }, |
| 254 | }, |
| 255 | .pw = { |
| 256 | .addr = ST_ACCEL_2_PW_ADDR, |
| 257 | .mask = ST_ACCEL_2_PW_MASK, |
| 258 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| 259 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| 260 | }, |
| 261 | .enable_axis = { |
| 262 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| 263 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| 264 | }, |
| 265 | .fs = { |
| 266 | .addr = ST_ACCEL_2_FS_ADDR, |
| 267 | .mask = ST_ACCEL_2_FS_MASK, |
| 268 | .fs_avl = { |
| 269 | [0] = { |
| 270 | .num = ST_ACCEL_FS_AVL_2G, |
| 271 | .value = ST_ACCEL_2_FS_AVL_2_VAL, |
| 272 | .gain = ST_ACCEL_2_FS_AVL_2_GAIN, |
| 273 | }, |
| 274 | [1] = { |
| 275 | .num = ST_ACCEL_FS_AVL_4G, |
| 276 | .value = ST_ACCEL_2_FS_AVL_4_VAL, |
| 277 | .gain = ST_ACCEL_2_FS_AVL_4_GAIN, |
| 278 | }, |
| 279 | [2] = { |
| 280 | .num = ST_ACCEL_FS_AVL_8G, |
| 281 | .value = ST_ACCEL_2_FS_AVL_8_VAL, |
| 282 | .gain = ST_ACCEL_2_FS_AVL_8_GAIN, |
| 283 | }, |
| 284 | }, |
| 285 | }, |
| 286 | .bdu = { |
| 287 | .addr = ST_ACCEL_2_BDU_ADDR, |
| 288 | .mask = ST_ACCEL_2_BDU_MASK, |
| 289 | }, |
| 290 | .drdy_irq = { |
| 291 | .addr = ST_ACCEL_2_DRDY_IRQ_ADDR, |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 292 | .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK, |
| 293 | .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK, |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 294 | }, |
| 295 | .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT, |
| 296 | .bootime = 2, |
| 297 | }, |
| 298 | { |
| 299 | .wai = ST_ACCEL_3_WAI_EXP, |
| 300 | .sensors_supported = { |
| 301 | [0] = LSM330_ACCEL_DEV_NAME, |
| 302 | }, |
| 303 | .ch = (struct iio_chan_spec *)st_accel_16bit_channels, |
| 304 | .odr = { |
| 305 | .addr = ST_ACCEL_3_ODR_ADDR, |
| 306 | .mask = ST_ACCEL_3_ODR_MASK, |
| 307 | .odr_avl = { |
| 308 | { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL }, |
| 309 | { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, }, |
| 310 | { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, }, |
| 311 | { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, }, |
| 312 | { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, }, |
| 313 | { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, }, |
| 314 | { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, }, |
| 315 | { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, }, |
| 316 | { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, }, |
| 317 | { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, }, |
| 318 | }, |
| 319 | }, |
| 320 | .pw = { |
| 321 | .addr = ST_ACCEL_3_ODR_ADDR, |
| 322 | .mask = ST_ACCEL_3_ODR_MASK, |
| 323 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| 324 | }, |
| 325 | .enable_axis = { |
| 326 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| 327 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| 328 | }, |
| 329 | .fs = { |
| 330 | .addr = ST_ACCEL_3_FS_ADDR, |
| 331 | .mask = ST_ACCEL_3_FS_MASK, |
| 332 | .fs_avl = { |
| 333 | [0] = { |
| 334 | .num = ST_ACCEL_FS_AVL_2G, |
| 335 | .value = ST_ACCEL_3_FS_AVL_2_VAL, |
| 336 | .gain = ST_ACCEL_3_FS_AVL_2_GAIN, |
| 337 | }, |
| 338 | [1] = { |
| 339 | .num = ST_ACCEL_FS_AVL_4G, |
| 340 | .value = ST_ACCEL_3_FS_AVL_4_VAL, |
| 341 | .gain = ST_ACCEL_3_FS_AVL_4_GAIN, |
| 342 | }, |
| 343 | [2] = { |
| 344 | .num = ST_ACCEL_FS_AVL_6G, |
| 345 | .value = ST_ACCEL_3_FS_AVL_6_VAL, |
| 346 | .gain = ST_ACCEL_3_FS_AVL_6_GAIN, |
| 347 | }, |
| 348 | [3] = { |
| 349 | .num = ST_ACCEL_FS_AVL_8G, |
| 350 | .value = ST_ACCEL_3_FS_AVL_8_VAL, |
| 351 | .gain = ST_ACCEL_3_FS_AVL_8_GAIN, |
| 352 | }, |
| 353 | [4] = { |
| 354 | .num = ST_ACCEL_FS_AVL_16G, |
| 355 | .value = ST_ACCEL_3_FS_AVL_16_VAL, |
| 356 | .gain = ST_ACCEL_3_FS_AVL_16_GAIN, |
| 357 | }, |
| 358 | }, |
| 359 | }, |
| 360 | .bdu = { |
| 361 | .addr = ST_ACCEL_3_BDU_ADDR, |
| 362 | .mask = ST_ACCEL_3_BDU_MASK, |
| 363 | }, |
| 364 | .drdy_irq = { |
| 365 | .addr = ST_ACCEL_3_DRDY_IRQ_ADDR, |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 366 | .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK, |
| 367 | .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK, |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 368 | .ig1 = { |
| 369 | .en_addr = ST_ACCEL_3_IG1_EN_ADDR, |
| 370 | .en_mask = ST_ACCEL_3_IG1_EN_MASK, |
| 371 | }, |
| 372 | }, |
| 373 | .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT, |
| 374 | .bootime = 2, |
| 375 | }, |
| 376 | }; |
| 377 | |
| 378 | static int st_accel_read_raw(struct iio_dev *indio_dev, |
| 379 | struct iio_chan_spec const *ch, int *val, |
| 380 | int *val2, long mask) |
| 381 | { |
| 382 | int err; |
| 383 | struct st_sensor_data *adata = iio_priv(indio_dev); |
| 384 | |
| 385 | switch (mask) { |
| 386 | case IIO_CHAN_INFO_RAW: |
| 387 | err = st_sensors_read_info_raw(indio_dev, ch, val); |
| 388 | if (err < 0) |
| 389 | goto read_error; |
| 390 | |
| 391 | return IIO_VAL_INT; |
| 392 | case IIO_CHAN_INFO_SCALE: |
| 393 | *val = 0; |
| 394 | *val2 = adata->current_fullscale->gain; |
| 395 | return IIO_VAL_INT_PLUS_MICRO; |
| 396 | default: |
| 397 | return -EINVAL; |
| 398 | } |
| 399 | |
| 400 | read_error: |
| 401 | return err; |
| 402 | } |
| 403 | |
| 404 | static int st_accel_write_raw(struct iio_dev *indio_dev, |
| 405 | struct iio_chan_spec const *chan, int val, int val2, long mask) |
| 406 | { |
| 407 | int err; |
| 408 | |
| 409 | switch (mask) { |
| 410 | case IIO_CHAN_INFO_SCALE: |
| 411 | err = st_sensors_set_fullscale_by_gain(indio_dev, val2); |
| 412 | break; |
| 413 | default: |
| 414 | return -EINVAL; |
| 415 | } |
| 416 | |
| 417 | return err; |
| 418 | } |
| 419 | |
| 420 | static ST_SENSOR_DEV_ATTR_SAMP_FREQ(); |
| 421 | static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); |
| 422 | static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available); |
| 423 | |
| 424 | static struct attribute *st_accel_attributes[] = { |
| 425 | &iio_dev_attr_sampling_frequency_available.dev_attr.attr, |
| 426 | &iio_dev_attr_in_accel_scale_available.dev_attr.attr, |
| 427 | &iio_dev_attr_sampling_frequency.dev_attr.attr, |
| 428 | NULL, |
| 429 | }; |
| 430 | |
| 431 | static const struct attribute_group st_accel_attribute_group = { |
| 432 | .attrs = st_accel_attributes, |
| 433 | }; |
| 434 | |
| 435 | static const struct iio_info accel_info = { |
| 436 | .driver_module = THIS_MODULE, |
| 437 | .attrs = &st_accel_attribute_group, |
| 438 | .read_raw = &st_accel_read_raw, |
| 439 | .write_raw = &st_accel_write_raw, |
| 440 | }; |
| 441 | |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 442 | #ifdef CONFIG_IIO_TRIGGER |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 443 | static const struct iio_trigger_ops st_accel_trigger_ops = { |
| 444 | .owner = THIS_MODULE, |
| 445 | .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE, |
| 446 | }; |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 447 | #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops) |
| 448 | #else |
| 449 | #define ST_ACCEL_TRIGGER_OPS NULL |
| 450 | #endif |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 451 | |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 452 | int st_accel_common_probe(struct iio_dev *indio_dev, |
| 453 | struct st_sensors_platform_data *plat_data) |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 454 | { |
| 455 | int err; |
| 456 | struct st_sensor_data *adata = iio_priv(indio_dev); |
| 457 | |
| 458 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 459 | indio_dev->info = &accel_info; |
| 460 | |
| 461 | err = st_sensors_check_device_support(indio_dev, |
| 462 | ARRAY_SIZE(st_accel_sensors), st_accel_sensors); |
| 463 | if (err < 0) |
| 464 | goto st_accel_common_probe_error; |
| 465 | |
Denis CIOCCA | 607a568 | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 466 | adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS; |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 467 | adata->multiread_bit = adata->sensor->multi_read_bit; |
| 468 | indio_dev->channels = adata->sensor->ch; |
| 469 | indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; |
| 470 | |
| 471 | adata->current_fullscale = (struct st_sensor_fullscale_avl *) |
| 472 | &adata->sensor->fs.fs_avl[0]; |
| 473 | adata->odr = adata->sensor->odr.odr_avl[0].hz; |
| 474 | |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 475 | if (!plat_data) |
| 476 | plat_data = |
| 477 | (struct st_sensors_platform_data *)&default_accel_pdata; |
| 478 | |
| 479 | err = st_sensors_init_sensor(indio_dev, plat_data); |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 480 | if (err < 0) |
| 481 | goto st_accel_common_probe_error; |
| 482 | |
| 483 | if (adata->get_irq_data_ready(indio_dev) > 0) { |
| 484 | err = st_accel_allocate_ring(indio_dev); |
| 485 | if (err < 0) |
| 486 | goto st_accel_common_probe_error; |
| 487 | |
| 488 | err = st_sensors_allocate_trigger(indio_dev, |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 489 | ST_ACCEL_TRIGGER_OPS); |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 490 | if (err < 0) |
| 491 | goto st_accel_probe_trigger_error; |
| 492 | } |
| 493 | |
| 494 | err = iio_device_register(indio_dev); |
| 495 | if (err) |
| 496 | goto st_accel_device_register_error; |
| 497 | |
| 498 | return err; |
| 499 | |
| 500 | st_accel_device_register_error: |
| 501 | if (adata->get_irq_data_ready(indio_dev) > 0) |
| 502 | st_sensors_deallocate_trigger(indio_dev); |
| 503 | st_accel_probe_trigger_error: |
| 504 | if (adata->get_irq_data_ready(indio_dev) > 0) |
| 505 | st_accel_deallocate_ring(indio_dev); |
| 506 | st_accel_common_probe_error: |
| 507 | return err; |
| 508 | } |
| 509 | EXPORT_SYMBOL(st_accel_common_probe); |
| 510 | |
| 511 | void st_accel_common_remove(struct iio_dev *indio_dev) |
| 512 | { |
| 513 | struct st_sensor_data *adata = iio_priv(indio_dev); |
| 514 | |
| 515 | iio_device_unregister(indio_dev); |
| 516 | if (adata->get_irq_data_ready(indio_dev) > 0) { |
| 517 | st_sensors_deallocate_trigger(indio_dev); |
| 518 | st_accel_deallocate_ring(indio_dev); |
| 519 | } |
Denis Ciocca | d625116 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 520 | } |
| 521 | EXPORT_SYMBOL(st_accel_common_remove); |
| 522 | |
| 523 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); |
| 524 | MODULE_DESCRIPTION("STMicroelectronics accelerometers driver"); |
| 525 | MODULE_LICENSE("GPL v2"); |