Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * STMicroelectronics gyroscopes 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/delay.h> |
| 22 | #include <linux/iio/iio.h> |
| 23 | #include <linux/iio/sysfs.h> |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 24 | #include <linux/iio/trigger.h> |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 25 | #include <linux/iio/buffer.h> |
| 26 | |
| 27 | #include <linux/iio/common/st_sensors.h> |
| 28 | #include "st_gyro.h" |
| 29 | |
Denis CIOCCA | 607a568 | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 30 | #define ST_GYRO_NUMBER_DATA_CHANNELS 3 |
| 31 | |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 32 | /* DEFAULT VALUE FOR SENSORS */ |
| 33 | #define ST_GYRO_DEFAULT_OUT_X_L_ADDR 0x28 |
| 34 | #define ST_GYRO_DEFAULT_OUT_Y_L_ADDR 0x2a |
| 35 | #define ST_GYRO_DEFAULT_OUT_Z_L_ADDR 0x2c |
| 36 | |
| 37 | /* FULLSCALE */ |
| 38 | #define ST_GYRO_FS_AVL_250DPS 250 |
| 39 | #define ST_GYRO_FS_AVL_500DPS 500 |
| 40 | #define ST_GYRO_FS_AVL_2000DPS 2000 |
| 41 | |
| 42 | /* CUSTOM VALUES FOR SENSOR 1 */ |
| 43 | #define ST_GYRO_1_WAI_EXP 0xd3 |
| 44 | #define ST_GYRO_1_ODR_ADDR 0x20 |
| 45 | #define ST_GYRO_1_ODR_MASK 0xc0 |
| 46 | #define ST_GYRO_1_ODR_AVL_100HZ_VAL 0x00 |
| 47 | #define ST_GYRO_1_ODR_AVL_200HZ_VAL 0x01 |
| 48 | #define ST_GYRO_1_ODR_AVL_400HZ_VAL 0x02 |
| 49 | #define ST_GYRO_1_ODR_AVL_800HZ_VAL 0x03 |
| 50 | #define ST_GYRO_1_PW_ADDR 0x20 |
| 51 | #define ST_GYRO_1_PW_MASK 0x08 |
| 52 | #define ST_GYRO_1_FS_ADDR 0x23 |
| 53 | #define ST_GYRO_1_FS_MASK 0x30 |
| 54 | #define ST_GYRO_1_FS_AVL_250_VAL 0x00 |
| 55 | #define ST_GYRO_1_FS_AVL_500_VAL 0x01 |
| 56 | #define ST_GYRO_1_FS_AVL_2000_VAL 0x02 |
| 57 | #define ST_GYRO_1_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750) |
| 58 | #define ST_GYRO_1_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500) |
| 59 | #define ST_GYRO_1_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000) |
| 60 | #define ST_GYRO_1_BDU_ADDR 0x23 |
| 61 | #define ST_GYRO_1_BDU_MASK 0x80 |
| 62 | #define ST_GYRO_1_DRDY_IRQ_ADDR 0x22 |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 63 | #define ST_GYRO_1_DRDY_IRQ_INT2_MASK 0x08 |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 64 | #define ST_GYRO_1_MULTIREAD_BIT true |
| 65 | |
| 66 | /* CUSTOM VALUES FOR SENSOR 2 */ |
| 67 | #define ST_GYRO_2_WAI_EXP 0xd4 |
| 68 | #define ST_GYRO_2_ODR_ADDR 0x20 |
| 69 | #define ST_GYRO_2_ODR_MASK 0xc0 |
| 70 | #define ST_GYRO_2_ODR_AVL_95HZ_VAL 0x00 |
| 71 | #define ST_GYRO_2_ODR_AVL_190HZ_VAL 0x01 |
| 72 | #define ST_GYRO_2_ODR_AVL_380HZ_VAL 0x02 |
| 73 | #define ST_GYRO_2_ODR_AVL_760HZ_VAL 0x03 |
| 74 | #define ST_GYRO_2_PW_ADDR 0x20 |
| 75 | #define ST_GYRO_2_PW_MASK 0x08 |
| 76 | #define ST_GYRO_2_FS_ADDR 0x23 |
| 77 | #define ST_GYRO_2_FS_MASK 0x30 |
| 78 | #define ST_GYRO_2_FS_AVL_250_VAL 0x00 |
| 79 | #define ST_GYRO_2_FS_AVL_500_VAL 0x01 |
| 80 | #define ST_GYRO_2_FS_AVL_2000_VAL 0x02 |
| 81 | #define ST_GYRO_2_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750) |
| 82 | #define ST_GYRO_2_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500) |
| 83 | #define ST_GYRO_2_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000) |
| 84 | #define ST_GYRO_2_BDU_ADDR 0x23 |
| 85 | #define ST_GYRO_2_BDU_MASK 0x80 |
| 86 | #define ST_GYRO_2_DRDY_IRQ_ADDR 0x22 |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 87 | #define ST_GYRO_2_DRDY_IRQ_INT2_MASK 0x08 |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 88 | #define ST_GYRO_2_MULTIREAD_BIT true |
| 89 | |
Robert Dolca | 9444a30 | 2015-03-23 15:40:25 +0200 | [diff] [blame] | 90 | /* CUSTOM VALUES FOR SENSOR 3 */ |
| 91 | #define ST_GYRO_3_WAI_EXP 0xd7 |
| 92 | #define ST_GYRO_3_ODR_ADDR 0x20 |
| 93 | #define ST_GYRO_3_ODR_MASK 0xc0 |
| 94 | #define ST_GYRO_3_ODR_AVL_95HZ_VAL 0x00 |
| 95 | #define ST_GYRO_3_ODR_AVL_190HZ_VAL 0x01 |
| 96 | #define ST_GYRO_3_ODR_AVL_380HZ_VAL 0x02 |
| 97 | #define ST_GYRO_3_ODR_AVL_760HZ_VAL 0x03 |
| 98 | #define ST_GYRO_3_PW_ADDR 0x20 |
| 99 | #define ST_GYRO_3_PW_MASK 0x08 |
| 100 | #define ST_GYRO_3_FS_ADDR 0x23 |
| 101 | #define ST_GYRO_3_FS_MASK 0x30 |
| 102 | #define ST_GYRO_3_FS_AVL_250_VAL 0x00 |
| 103 | #define ST_GYRO_3_FS_AVL_500_VAL 0x01 |
| 104 | #define ST_GYRO_3_FS_AVL_2000_VAL 0x02 |
| 105 | #define ST_GYRO_3_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750) |
| 106 | #define ST_GYRO_3_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500) |
| 107 | #define ST_GYRO_3_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000) |
| 108 | #define ST_GYRO_3_BDU_ADDR 0x23 |
| 109 | #define ST_GYRO_3_BDU_MASK 0x80 |
| 110 | #define ST_GYRO_3_DRDY_IRQ_ADDR 0x22 |
| 111 | #define ST_GYRO_3_DRDY_IRQ_INT2_MASK 0x08 |
| 112 | #define ST_GYRO_3_MULTIREAD_BIT true |
| 113 | |
| 114 | |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 115 | static const struct iio_chan_spec st_gyro_16bit_channels[] = { |
Denis CIOCCA | 762011d | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 116 | ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL, |
| 117 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 118 | ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, |
| 119 | ST_GYRO_DEFAULT_OUT_X_L_ADDR), |
| 120 | ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL, |
| 121 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 122 | ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, |
| 123 | ST_GYRO_DEFAULT_OUT_Y_L_ADDR), |
| 124 | ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL, |
| 125 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), |
| 126 | ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, |
| 127 | ST_GYRO_DEFAULT_OUT_Z_L_ADDR), |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 128 | IIO_CHAN_SOFT_TIMESTAMP(3) |
| 129 | }; |
| 130 | |
Denis CIOCCA | a7ee883 | 2014-10-03 17:35:35 +0200 | [diff] [blame] | 131 | static const struct st_sensor_settings st_gyro_sensors_settings[] = { |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 132 | { |
| 133 | .wai = ST_GYRO_1_WAI_EXP, |
| 134 | .sensors_supported = { |
| 135 | [0] = L3G4200D_GYRO_DEV_NAME, |
| 136 | [1] = LSM330DL_GYRO_DEV_NAME, |
| 137 | }, |
| 138 | .ch = (struct iio_chan_spec *)st_gyro_16bit_channels, |
| 139 | .odr = { |
| 140 | .addr = ST_GYRO_1_ODR_ADDR, |
| 141 | .mask = ST_GYRO_1_ODR_MASK, |
| 142 | .odr_avl = { |
| 143 | { 100, ST_GYRO_1_ODR_AVL_100HZ_VAL, }, |
| 144 | { 200, ST_GYRO_1_ODR_AVL_200HZ_VAL, }, |
| 145 | { 400, ST_GYRO_1_ODR_AVL_400HZ_VAL, }, |
| 146 | { 800, ST_GYRO_1_ODR_AVL_800HZ_VAL, }, |
| 147 | }, |
| 148 | }, |
| 149 | .pw = { |
| 150 | .addr = ST_GYRO_1_PW_ADDR, |
| 151 | .mask = ST_GYRO_1_PW_MASK, |
| 152 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| 153 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| 154 | }, |
| 155 | .enable_axis = { |
| 156 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| 157 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| 158 | }, |
| 159 | .fs = { |
| 160 | .addr = ST_GYRO_1_FS_ADDR, |
| 161 | .mask = ST_GYRO_1_FS_MASK, |
| 162 | .fs_avl = { |
| 163 | [0] = { |
| 164 | .num = ST_GYRO_FS_AVL_250DPS, |
| 165 | .value = ST_GYRO_1_FS_AVL_250_VAL, |
| 166 | .gain = ST_GYRO_1_FS_AVL_250_GAIN, |
| 167 | }, |
| 168 | [1] = { |
| 169 | .num = ST_GYRO_FS_AVL_500DPS, |
| 170 | .value = ST_GYRO_1_FS_AVL_500_VAL, |
| 171 | .gain = ST_GYRO_1_FS_AVL_500_GAIN, |
| 172 | }, |
| 173 | [2] = { |
| 174 | .num = ST_GYRO_FS_AVL_2000DPS, |
| 175 | .value = ST_GYRO_1_FS_AVL_2000_VAL, |
| 176 | .gain = ST_GYRO_1_FS_AVL_2000_GAIN, |
| 177 | }, |
| 178 | }, |
| 179 | }, |
| 180 | .bdu = { |
| 181 | .addr = ST_GYRO_1_BDU_ADDR, |
| 182 | .mask = ST_GYRO_1_BDU_MASK, |
| 183 | }, |
| 184 | .drdy_irq = { |
| 185 | .addr = ST_GYRO_1_DRDY_IRQ_ADDR, |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 186 | .mask_int2 = ST_GYRO_1_DRDY_IRQ_INT2_MASK, |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 187 | }, |
| 188 | .multi_read_bit = ST_GYRO_1_MULTIREAD_BIT, |
| 189 | .bootime = 2, |
| 190 | }, |
| 191 | { |
| 192 | .wai = ST_GYRO_2_WAI_EXP, |
| 193 | .sensors_supported = { |
| 194 | [0] = L3GD20_GYRO_DEV_NAME, |
Denis CIOCCA | a065771 | 2014-02-14 14:15:00 +0000 | [diff] [blame] | 195 | [1] = LSM330D_GYRO_DEV_NAME, |
| 196 | [2] = LSM330DLC_GYRO_DEV_NAME, |
| 197 | [3] = L3G4IS_GYRO_DEV_NAME, |
| 198 | [4] = LSM330_GYRO_DEV_NAME, |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 199 | }, |
| 200 | .ch = (struct iio_chan_spec *)st_gyro_16bit_channels, |
| 201 | .odr = { |
| 202 | .addr = ST_GYRO_2_ODR_ADDR, |
| 203 | .mask = ST_GYRO_2_ODR_MASK, |
| 204 | .odr_avl = { |
| 205 | { 95, ST_GYRO_2_ODR_AVL_95HZ_VAL, }, |
| 206 | { 190, ST_GYRO_2_ODR_AVL_190HZ_VAL, }, |
| 207 | { 380, ST_GYRO_2_ODR_AVL_380HZ_VAL, }, |
| 208 | { 760, ST_GYRO_2_ODR_AVL_760HZ_VAL, }, |
| 209 | }, |
| 210 | }, |
| 211 | .pw = { |
| 212 | .addr = ST_GYRO_2_PW_ADDR, |
| 213 | .mask = ST_GYRO_2_PW_MASK, |
| 214 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| 215 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| 216 | }, |
| 217 | .enable_axis = { |
| 218 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| 219 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| 220 | }, |
| 221 | .fs = { |
| 222 | .addr = ST_GYRO_2_FS_ADDR, |
| 223 | .mask = ST_GYRO_2_FS_MASK, |
| 224 | .fs_avl = { |
| 225 | [0] = { |
| 226 | .num = ST_GYRO_FS_AVL_250DPS, |
| 227 | .value = ST_GYRO_2_FS_AVL_250_VAL, |
| 228 | .gain = ST_GYRO_2_FS_AVL_250_GAIN, |
| 229 | }, |
| 230 | [1] = { |
| 231 | .num = ST_GYRO_FS_AVL_500DPS, |
| 232 | .value = ST_GYRO_2_FS_AVL_500_VAL, |
| 233 | .gain = ST_GYRO_2_FS_AVL_500_GAIN, |
| 234 | }, |
| 235 | [2] = { |
| 236 | .num = ST_GYRO_FS_AVL_2000DPS, |
| 237 | .value = ST_GYRO_2_FS_AVL_2000_VAL, |
| 238 | .gain = ST_GYRO_2_FS_AVL_2000_GAIN, |
| 239 | }, |
| 240 | }, |
| 241 | }, |
| 242 | .bdu = { |
| 243 | .addr = ST_GYRO_2_BDU_ADDR, |
| 244 | .mask = ST_GYRO_2_BDU_MASK, |
| 245 | }, |
| 246 | .drdy_irq = { |
| 247 | .addr = ST_GYRO_2_DRDY_IRQ_ADDR, |
Denis CIOCCA | 23cde4d | 2013-06-19 09:28:00 +0100 | [diff] [blame] | 248 | .mask_int2 = ST_GYRO_2_DRDY_IRQ_INT2_MASK, |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 249 | }, |
| 250 | .multi_read_bit = ST_GYRO_2_MULTIREAD_BIT, |
| 251 | .bootime = 2, |
| 252 | }, |
Robert Dolca | 9444a30 | 2015-03-23 15:40:25 +0200 | [diff] [blame] | 253 | { |
| 254 | .wai = ST_GYRO_3_WAI_EXP, |
| 255 | .sensors_supported = { |
| 256 | [0] = L3GD20_GYRO_DEV_NAME, |
| 257 | }, |
| 258 | .ch = (struct iio_chan_spec *)st_gyro_16bit_channels, |
| 259 | .odr = { |
| 260 | .addr = ST_GYRO_3_ODR_ADDR, |
| 261 | .mask = ST_GYRO_3_ODR_MASK, |
| 262 | .odr_avl = { |
| 263 | { 95, ST_GYRO_3_ODR_AVL_95HZ_VAL, }, |
| 264 | { 190, ST_GYRO_3_ODR_AVL_190HZ_VAL, }, |
| 265 | { 380, ST_GYRO_3_ODR_AVL_380HZ_VAL, }, |
| 266 | { 760, ST_GYRO_3_ODR_AVL_760HZ_VAL, }, |
| 267 | }, |
| 268 | }, |
| 269 | .pw = { |
| 270 | .addr = ST_GYRO_3_PW_ADDR, |
| 271 | .mask = ST_GYRO_3_PW_MASK, |
| 272 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, |
| 273 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, |
| 274 | }, |
| 275 | .enable_axis = { |
| 276 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, |
| 277 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, |
| 278 | }, |
| 279 | .fs = { |
| 280 | .addr = ST_GYRO_3_FS_ADDR, |
| 281 | .mask = ST_GYRO_3_FS_MASK, |
| 282 | .fs_avl = { |
| 283 | [0] = { |
| 284 | .num = ST_GYRO_FS_AVL_250DPS, |
| 285 | .value = ST_GYRO_3_FS_AVL_250_VAL, |
| 286 | .gain = ST_GYRO_3_FS_AVL_250_GAIN, |
| 287 | }, |
| 288 | [1] = { |
| 289 | .num = ST_GYRO_FS_AVL_500DPS, |
| 290 | .value = ST_GYRO_3_FS_AVL_500_VAL, |
| 291 | .gain = ST_GYRO_3_FS_AVL_500_GAIN, |
| 292 | }, |
| 293 | [2] = { |
| 294 | .num = ST_GYRO_FS_AVL_2000DPS, |
| 295 | .value = ST_GYRO_3_FS_AVL_2000_VAL, |
| 296 | .gain = ST_GYRO_3_FS_AVL_2000_GAIN, |
| 297 | }, |
| 298 | }, |
| 299 | }, |
| 300 | .bdu = { |
| 301 | .addr = ST_GYRO_3_BDU_ADDR, |
| 302 | .mask = ST_GYRO_3_BDU_MASK, |
| 303 | }, |
| 304 | .drdy_irq = { |
| 305 | .addr = ST_GYRO_3_DRDY_IRQ_ADDR, |
| 306 | .mask_int2 = ST_GYRO_3_DRDY_IRQ_INT2_MASK, |
| 307 | }, |
| 308 | .multi_read_bit = ST_GYRO_3_MULTIREAD_BIT, |
| 309 | .bootime = 2, |
| 310 | }, |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 311 | }; |
| 312 | |
| 313 | static int st_gyro_read_raw(struct iio_dev *indio_dev, |
| 314 | struct iio_chan_spec const *ch, int *val, |
| 315 | int *val2, long mask) |
| 316 | { |
| 317 | int err; |
| 318 | struct st_sensor_data *gdata = iio_priv(indio_dev); |
| 319 | |
| 320 | switch (mask) { |
| 321 | case IIO_CHAN_INFO_RAW: |
| 322 | err = st_sensors_read_info_raw(indio_dev, ch, val); |
| 323 | if (err < 0) |
| 324 | goto read_error; |
| 325 | |
| 326 | return IIO_VAL_INT; |
| 327 | case IIO_CHAN_INFO_SCALE: |
| 328 | *val = 0; |
| 329 | *val2 = gdata->current_fullscale->gain; |
| 330 | return IIO_VAL_INT_PLUS_MICRO; |
Jonathan Cameron | 2d239c9 | 2014-06-22 20:59:00 +0100 | [diff] [blame] | 331 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 332 | *val = gdata->odr; |
| 333 | return IIO_VAL_INT; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 334 | default: |
| 335 | return -EINVAL; |
| 336 | } |
| 337 | |
| 338 | read_error: |
| 339 | return err; |
| 340 | } |
| 341 | |
| 342 | static int st_gyro_write_raw(struct iio_dev *indio_dev, |
| 343 | struct iio_chan_spec const *chan, int val, int val2, long mask) |
| 344 | { |
| 345 | int err; |
| 346 | |
| 347 | switch (mask) { |
| 348 | case IIO_CHAN_INFO_SCALE: |
| 349 | err = st_sensors_set_fullscale_by_gain(indio_dev, val2); |
| 350 | break; |
Jonathan Cameron | 2d239c9 | 2014-06-22 20:59:00 +0100 | [diff] [blame] | 351 | case IIO_CHAN_INFO_SAMP_FREQ: |
| 352 | if (val2) |
| 353 | return -EINVAL; |
| 354 | mutex_lock(&indio_dev->mlock); |
| 355 | err = st_sensors_set_odr(indio_dev, val); |
| 356 | mutex_unlock(&indio_dev->mlock); |
| 357 | return err; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 358 | default: |
| 359 | err = -EINVAL; |
| 360 | } |
| 361 | |
| 362 | return err; |
| 363 | } |
| 364 | |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 365 | static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); |
| 366 | static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_anglvel_scale_available); |
| 367 | |
| 368 | static struct attribute *st_gyro_attributes[] = { |
| 369 | &iio_dev_attr_sampling_frequency_available.dev_attr.attr, |
| 370 | &iio_dev_attr_in_anglvel_scale_available.dev_attr.attr, |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 371 | NULL, |
| 372 | }; |
| 373 | |
| 374 | static const struct attribute_group st_gyro_attribute_group = { |
| 375 | .attrs = st_gyro_attributes, |
| 376 | }; |
| 377 | |
| 378 | static const struct iio_info gyro_info = { |
| 379 | .driver_module = THIS_MODULE, |
| 380 | .attrs = &st_gyro_attribute_group, |
| 381 | .read_raw = &st_gyro_read_raw, |
| 382 | .write_raw = &st_gyro_write_raw, |
| 383 | }; |
| 384 | |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 385 | #ifdef CONFIG_IIO_TRIGGER |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 386 | static const struct iio_trigger_ops st_gyro_trigger_ops = { |
| 387 | .owner = THIS_MODULE, |
| 388 | .set_trigger_state = ST_GYRO_TRIGGER_SET_STATE, |
| 389 | }; |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 390 | #define ST_GYRO_TRIGGER_OPS (&st_gyro_trigger_ops) |
| 391 | #else |
| 392 | #define ST_GYRO_TRIGGER_OPS NULL |
| 393 | #endif |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 394 | |
Denis CIOCCA | ef67b34 | 2014-10-03 17:35:37 +0200 | [diff] [blame] | 395 | int st_gyro_common_probe(struct iio_dev *indio_dev) |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 396 | { |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 397 | struct st_sensor_data *gdata = iio_priv(indio_dev); |
Lee Jones | f01a140 | 2013-09-16 17:02:00 +0100 | [diff] [blame] | 398 | int irq = gdata->get_irq_data_ready(indio_dev); |
| 399 | int err; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 400 | |
| 401 | indio_dev->modes = INDIO_DIRECT_MODE; |
| 402 | indio_dev->info = &gyro_info; |
Alban Bedel | 8e71c04 | 2015-04-20 13:57:18 +0200 | [diff] [blame] | 403 | mutex_init(&gdata->tb.buf_lock); |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 404 | |
Linus Walleij | ea7e586 | 2014-04-13 20:08:00 +0100 | [diff] [blame] | 405 | st_sensors_power_enable(indio_dev); |
| 406 | |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 407 | err = st_sensors_check_device_support(indio_dev, |
Denis CIOCCA | a7ee883 | 2014-10-03 17:35:35 +0200 | [diff] [blame] | 408 | ARRAY_SIZE(st_gyro_sensors_settings), |
| 409 | st_gyro_sensors_settings); |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 410 | if (err < 0) |
Lee Jones | f01a140 | 2013-09-16 17:02:00 +0100 | [diff] [blame] | 411 | return err; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 412 | |
Denis CIOCCA | 607a568 | 2013-06-03 15:58:00 +0100 | [diff] [blame] | 413 | gdata->num_data_channels = ST_GYRO_NUMBER_DATA_CHANNELS; |
Denis CIOCCA | a7ee883 | 2014-10-03 17:35:35 +0200 | [diff] [blame] | 414 | gdata->multiread_bit = gdata->sensor_settings->multi_read_bit; |
| 415 | indio_dev->channels = gdata->sensor_settings->ch; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 416 | indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; |
| 417 | |
| 418 | gdata->current_fullscale = (struct st_sensor_fullscale_avl *) |
Denis CIOCCA | a7ee883 | 2014-10-03 17:35:35 +0200 | [diff] [blame] | 419 | &gdata->sensor_settings->fs.fs_avl[0]; |
| 420 | gdata->odr = gdata->sensor_settings->odr.odr_avl[0].hz; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 421 | |
Denis CIOCCA | ef67b34 | 2014-10-03 17:35:37 +0200 | [diff] [blame] | 422 | err = st_sensors_init_sensor(indio_dev, |
| 423 | (struct st_sensors_platform_data *)&gyro_pdata); |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 424 | if (err < 0) |
Lee Jones | f01a140 | 2013-09-16 17:02:00 +0100 | [diff] [blame] | 425 | return err; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 426 | |
Denis CIOCCA | fb4ea1f | 2013-09-18 10:00:00 +0100 | [diff] [blame] | 427 | err = st_gyro_allocate_ring(indio_dev); |
| 428 | if (err < 0) |
| 429 | return err; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 430 | |
Denis CIOCCA | fb4ea1f | 2013-09-18 10:00:00 +0100 | [diff] [blame] | 431 | if (irq > 0) { |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 432 | err = st_sensors_allocate_trigger(indio_dev, |
Jonathan Cameron | 8ce4a56 | 2013-02-09 10:49:00 +0000 | [diff] [blame] | 433 | ST_GYRO_TRIGGER_OPS); |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 434 | if (err < 0) |
| 435 | goto st_gyro_probe_trigger_error; |
| 436 | } |
| 437 | |
| 438 | err = iio_device_register(indio_dev); |
| 439 | if (err) |
| 440 | goto st_gyro_device_register_error; |
| 441 | |
Linus Walleij | 4f544ce | 2014-04-13 20:08:00 +0100 | [diff] [blame] | 442 | dev_info(&indio_dev->dev, "registered gyroscope %s\n", |
| 443 | indio_dev->name); |
| 444 | |
Lee Jones | f01a140 | 2013-09-16 17:02:00 +0100 | [diff] [blame] | 445 | return 0; |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 446 | |
| 447 | st_gyro_device_register_error: |
Lee Jones | f01a140 | 2013-09-16 17:02:00 +0100 | [diff] [blame] | 448 | if (irq > 0) |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 449 | st_sensors_deallocate_trigger(indio_dev); |
| 450 | st_gyro_probe_trigger_error: |
Denis CIOCCA | fb4ea1f | 2013-09-18 10:00:00 +0100 | [diff] [blame] | 451 | st_gyro_deallocate_ring(indio_dev); |
Lee Jones | f01a140 | 2013-09-16 17:02:00 +0100 | [diff] [blame] | 452 | |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 453 | return err; |
| 454 | } |
| 455 | EXPORT_SYMBOL(st_gyro_common_probe); |
| 456 | |
| 457 | void st_gyro_common_remove(struct iio_dev *indio_dev) |
| 458 | { |
| 459 | struct st_sensor_data *gdata = iio_priv(indio_dev); |
| 460 | |
Linus Walleij | ea7e586 | 2014-04-13 20:08:00 +0100 | [diff] [blame] | 461 | st_sensors_power_disable(indio_dev); |
| 462 | |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 463 | iio_device_unregister(indio_dev); |
Denis CIOCCA | fb4ea1f | 2013-09-18 10:00:00 +0100 | [diff] [blame] | 464 | if (gdata->get_irq_data_ready(indio_dev) > 0) |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 465 | st_sensors_deallocate_trigger(indio_dev); |
Denis CIOCCA | fb4ea1f | 2013-09-18 10:00:00 +0100 | [diff] [blame] | 466 | |
| 467 | st_gyro_deallocate_ring(indio_dev); |
Denis Ciocca | 7be56a8 | 2013-01-25 23:44:00 +0000 | [diff] [blame] | 468 | } |
| 469 | EXPORT_SYMBOL(st_gyro_common_remove); |
| 470 | |
| 471 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); |
| 472 | MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver"); |
| 473 | MODULE_LICENSE("GPL v2"); |