1a095fadbSJean-Baptiste Maneyrol // SPDX-License-Identifier: GPL-2.0-or-later 2a095fadbSJean-Baptiste Maneyrol /* 3a095fadbSJean-Baptiste Maneyrol * Copyright (C) 2020 Invensense, Inc. 4a095fadbSJean-Baptiste Maneyrol */ 5a095fadbSJean-Baptiste Maneyrol 6a095fadbSJean-Baptiste Maneyrol #include <linux/kernel.h> 7a095fadbSJean-Baptiste Maneyrol #include <linux/device.h> 8a095fadbSJean-Baptiste Maneyrol #include <linux/mutex.h> 9a095fadbSJean-Baptiste Maneyrol #include <linux/pm_runtime.h> 10a095fadbSJean-Baptiste Maneyrol #include <linux/regmap.h> 11a095fadbSJean-Baptiste Maneyrol #include <linux/delay.h> 12a095fadbSJean-Baptiste Maneyrol #include <linux/math64.h> 13d99ff463SJean-Baptiste Maneyrol 147f85e42aSJean-Baptiste Maneyrol #include <linux/iio/buffer.h> 150ecc363cSJean-Baptiste Maneyrol #include <linux/iio/common/inv_sensors_timestamp.h> 16d99ff463SJean-Baptiste Maneyrol #include <linux/iio/iio.h> 177f85e42aSJean-Baptiste Maneyrol #include <linux/iio/kfifo_buf.h> 18a095fadbSJean-Baptiste Maneyrol 19a095fadbSJean-Baptiste Maneyrol #include "inv_icm42600.h" 20bc3eb020SJean-Baptiste Maneyrol #include "inv_icm42600_temp.h" 217f85e42aSJean-Baptiste Maneyrol #include "inv_icm42600_buffer.h" 22a095fadbSJean-Baptiste Maneyrol 23a095fadbSJean-Baptiste Maneyrol #define INV_ICM42600_GYRO_CHAN(_modifier, _index, _ext_info) \ 24a095fadbSJean-Baptiste Maneyrol { \ 25a095fadbSJean-Baptiste Maneyrol .type = IIO_ANGL_VEL, \ 26a095fadbSJean-Baptiste Maneyrol .modified = 1, \ 27a095fadbSJean-Baptiste Maneyrol .channel2 = _modifier, \ 28a095fadbSJean-Baptiste Maneyrol .info_mask_separate = \ 29a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_RAW) | \ 30a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_CALIBBIAS), \ 31a095fadbSJean-Baptiste Maneyrol .info_mask_shared_by_type = \ 32a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_SCALE), \ 33a095fadbSJean-Baptiste Maneyrol .info_mask_shared_by_type_available = \ 34a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_SCALE) | \ 35a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_CALIBBIAS), \ 36a095fadbSJean-Baptiste Maneyrol .info_mask_shared_by_all = \ 37a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_SAMP_FREQ), \ 38a095fadbSJean-Baptiste Maneyrol .info_mask_shared_by_all_available = \ 39a095fadbSJean-Baptiste Maneyrol BIT(IIO_CHAN_INFO_SAMP_FREQ), \ 40a095fadbSJean-Baptiste Maneyrol .scan_index = _index, \ 41a095fadbSJean-Baptiste Maneyrol .scan_type = { \ 42a095fadbSJean-Baptiste Maneyrol .sign = 's', \ 43a095fadbSJean-Baptiste Maneyrol .realbits = 16, \ 44a095fadbSJean-Baptiste Maneyrol .storagebits = 16, \ 45a095fadbSJean-Baptiste Maneyrol .endianness = IIO_BE, \ 46a095fadbSJean-Baptiste Maneyrol }, \ 47a095fadbSJean-Baptiste Maneyrol .ext_info = _ext_info, \ 48a095fadbSJean-Baptiste Maneyrol } 49a095fadbSJean-Baptiste Maneyrol 50a095fadbSJean-Baptiste Maneyrol enum inv_icm42600_gyro_scan { 51a095fadbSJean-Baptiste Maneyrol INV_ICM42600_GYRO_SCAN_X, 52a095fadbSJean-Baptiste Maneyrol INV_ICM42600_GYRO_SCAN_Y, 53a095fadbSJean-Baptiste Maneyrol INV_ICM42600_GYRO_SCAN_Z, 54bc3eb020SJean-Baptiste Maneyrol INV_ICM42600_GYRO_SCAN_TEMP, 55ec74ae9fSJean-Baptiste Maneyrol INV_ICM42600_GYRO_SCAN_TIMESTAMP, 56a095fadbSJean-Baptiste Maneyrol }; 57a095fadbSJean-Baptiste Maneyrol 58a095fadbSJean-Baptiste Maneyrol static const struct iio_chan_spec_ext_info inv_icm42600_gyro_ext_infos[] = { 59a095fadbSJean-Baptiste Maneyrol IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, inv_icm42600_get_mount_matrix), 60a095fadbSJean-Baptiste Maneyrol {}, 61a095fadbSJean-Baptiste Maneyrol }; 62a095fadbSJean-Baptiste Maneyrol 63a095fadbSJean-Baptiste Maneyrol static const struct iio_chan_spec inv_icm42600_gyro_channels[] = { 64a095fadbSJean-Baptiste Maneyrol INV_ICM42600_GYRO_CHAN(IIO_MOD_X, INV_ICM42600_GYRO_SCAN_X, 65a095fadbSJean-Baptiste Maneyrol inv_icm42600_gyro_ext_infos), 66a095fadbSJean-Baptiste Maneyrol INV_ICM42600_GYRO_CHAN(IIO_MOD_Y, INV_ICM42600_GYRO_SCAN_Y, 67a095fadbSJean-Baptiste Maneyrol inv_icm42600_gyro_ext_infos), 68a095fadbSJean-Baptiste Maneyrol INV_ICM42600_GYRO_CHAN(IIO_MOD_Z, INV_ICM42600_GYRO_SCAN_Z, 69a095fadbSJean-Baptiste Maneyrol inv_icm42600_gyro_ext_infos), 70bc3eb020SJean-Baptiste Maneyrol INV_ICM42600_TEMP_CHAN(INV_ICM42600_GYRO_SCAN_TEMP), 71ec74ae9fSJean-Baptiste Maneyrol IIO_CHAN_SOFT_TIMESTAMP(INV_ICM42600_GYRO_SCAN_TIMESTAMP), 72a095fadbSJean-Baptiste Maneyrol }; 73a095fadbSJean-Baptiste Maneyrol 747f85e42aSJean-Baptiste Maneyrol /* 75ec74ae9fSJean-Baptiste Maneyrol * IIO buffer data: size must be a power of 2 and timestamp aligned 76ec74ae9fSJean-Baptiste Maneyrol * 16 bytes: 6 bytes angular velocity, 2 bytes temperature, 8 bytes timestamp 777f85e42aSJean-Baptiste Maneyrol */ 787f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_gyro_buffer { 797f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_fifo_sensor_data gyro; 807f85e42aSJean-Baptiste Maneyrol int16_t temp; 81ec74ae9fSJean-Baptiste Maneyrol int64_t timestamp __aligned(8); 827f85e42aSJean-Baptiste Maneyrol }; 837f85e42aSJean-Baptiste Maneyrol 847f85e42aSJean-Baptiste Maneyrol #define INV_ICM42600_SCAN_MASK_GYRO_3AXIS \ 857f85e42aSJean-Baptiste Maneyrol (BIT(INV_ICM42600_GYRO_SCAN_X) | \ 867f85e42aSJean-Baptiste Maneyrol BIT(INV_ICM42600_GYRO_SCAN_Y) | \ 877f85e42aSJean-Baptiste Maneyrol BIT(INV_ICM42600_GYRO_SCAN_Z)) 887f85e42aSJean-Baptiste Maneyrol 897f85e42aSJean-Baptiste Maneyrol #define INV_ICM42600_SCAN_MASK_TEMP BIT(INV_ICM42600_GYRO_SCAN_TEMP) 907f85e42aSJean-Baptiste Maneyrol 917f85e42aSJean-Baptiste Maneyrol static const unsigned long inv_icm42600_gyro_scan_masks[] = { 927f85e42aSJean-Baptiste Maneyrol /* 3-axis gyro + temperature */ 937f85e42aSJean-Baptiste Maneyrol INV_ICM42600_SCAN_MASK_GYRO_3AXIS | INV_ICM42600_SCAN_MASK_TEMP, 947f85e42aSJean-Baptiste Maneyrol 0, 957f85e42aSJean-Baptiste Maneyrol }; 967f85e42aSJean-Baptiste Maneyrol 977f85e42aSJean-Baptiste Maneyrol /* enable gyroscope sensor and FIFO write */ 987f85e42aSJean-Baptiste Maneyrol static int inv_icm42600_gyro_update_scan_mode(struct iio_dev *indio_dev, 997f85e42aSJean-Baptiste Maneyrol const unsigned long *scan_mask) 1007f85e42aSJean-Baptiste Maneyrol { 1017f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 102*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev); 103*a1432b5bSJean-Baptiste Maneyrol struct inv_sensors_timestamp *ts = &gyro_st->ts; 1047f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT; 1057f85e42aSJean-Baptiste Maneyrol unsigned int fifo_en = 0; 1067f85e42aSJean-Baptiste Maneyrol unsigned int sleep_gyro = 0; 1077f85e42aSJean-Baptiste Maneyrol unsigned int sleep_temp = 0; 1087f85e42aSJean-Baptiste Maneyrol unsigned int sleep; 1097f85e42aSJean-Baptiste Maneyrol int ret; 1107f85e42aSJean-Baptiste Maneyrol 1117f85e42aSJean-Baptiste Maneyrol mutex_lock(&st->lock); 1127f85e42aSJean-Baptiste Maneyrol 1137f85e42aSJean-Baptiste Maneyrol if (*scan_mask & INV_ICM42600_SCAN_MASK_TEMP) { 1147f85e42aSJean-Baptiste Maneyrol /* enable temp sensor */ 1157f85e42aSJean-Baptiste Maneyrol ret = inv_icm42600_set_temp_conf(st, true, &sleep_temp); 1167f85e42aSJean-Baptiste Maneyrol if (ret) 1177f85e42aSJean-Baptiste Maneyrol goto out_unlock; 1187f85e42aSJean-Baptiste Maneyrol fifo_en |= INV_ICM42600_SENSOR_TEMP; 1197f85e42aSJean-Baptiste Maneyrol } 1207f85e42aSJean-Baptiste Maneyrol 1217f85e42aSJean-Baptiste Maneyrol if (*scan_mask & INV_ICM42600_SCAN_MASK_GYRO_3AXIS) { 1227f85e42aSJean-Baptiste Maneyrol /* enable gyro sensor */ 1237f85e42aSJean-Baptiste Maneyrol conf.mode = INV_ICM42600_SENSOR_MODE_LOW_NOISE; 1247f85e42aSJean-Baptiste Maneyrol ret = inv_icm42600_set_gyro_conf(st, &conf, &sleep_gyro); 1257f85e42aSJean-Baptiste Maneyrol if (ret) 1267f85e42aSJean-Baptiste Maneyrol goto out_unlock; 1277f85e42aSJean-Baptiste Maneyrol fifo_en |= INV_ICM42600_SENSOR_GYRO; 1287f85e42aSJean-Baptiste Maneyrol } 1297f85e42aSJean-Baptiste Maneyrol 1307f85e42aSJean-Baptiste Maneyrol /* update data FIFO write */ 1310ecc363cSJean-Baptiste Maneyrol inv_sensors_timestamp_apply_odr(ts, 0, 0, 0); 1327f85e42aSJean-Baptiste Maneyrol ret = inv_icm42600_buffer_set_fifo_en(st, fifo_en | st->fifo.en); 1337f85e42aSJean-Baptiste Maneyrol 1347f85e42aSJean-Baptiste Maneyrol out_unlock: 1357f85e42aSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 1367f85e42aSJean-Baptiste Maneyrol /* sleep maximum required time */ 137c788b9e5SBragatheswaran Manickavel sleep = max(sleep_gyro, sleep_temp); 1387f85e42aSJean-Baptiste Maneyrol if (sleep) 1397f85e42aSJean-Baptiste Maneyrol msleep(sleep); 1407f85e42aSJean-Baptiste Maneyrol return ret; 1417f85e42aSJean-Baptiste Maneyrol } 1427f85e42aSJean-Baptiste Maneyrol 143a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_read_sensor(struct inv_icm42600_state *st, 144a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 145a095fadbSJean-Baptiste Maneyrol int16_t *val) 146a095fadbSJean-Baptiste Maneyrol { 147a095fadbSJean-Baptiste Maneyrol struct device *dev = regmap_get_device(st->map); 148a095fadbSJean-Baptiste Maneyrol struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT; 149a095fadbSJean-Baptiste Maneyrol unsigned int reg; 150a095fadbSJean-Baptiste Maneyrol __be16 *data; 151a095fadbSJean-Baptiste Maneyrol int ret; 152a095fadbSJean-Baptiste Maneyrol 153a095fadbSJean-Baptiste Maneyrol if (chan->type != IIO_ANGL_VEL) 154a095fadbSJean-Baptiste Maneyrol return -EINVAL; 155a095fadbSJean-Baptiste Maneyrol 156a095fadbSJean-Baptiste Maneyrol switch (chan->channel2) { 157a095fadbSJean-Baptiste Maneyrol case IIO_MOD_X: 158a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_GYRO_DATA_X; 159a095fadbSJean-Baptiste Maneyrol break; 160a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Y: 161a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_GYRO_DATA_Y; 162a095fadbSJean-Baptiste Maneyrol break; 163a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Z: 164a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_GYRO_DATA_Z; 165a095fadbSJean-Baptiste Maneyrol break; 166a095fadbSJean-Baptiste Maneyrol default: 167a095fadbSJean-Baptiste Maneyrol return -EINVAL; 168a095fadbSJean-Baptiste Maneyrol } 169a095fadbSJean-Baptiste Maneyrol 170a095fadbSJean-Baptiste Maneyrol pm_runtime_get_sync(dev); 171a095fadbSJean-Baptiste Maneyrol mutex_lock(&st->lock); 172a095fadbSJean-Baptiste Maneyrol 173a095fadbSJean-Baptiste Maneyrol /* enable gyro sensor */ 174a095fadbSJean-Baptiste Maneyrol conf.mode = INV_ICM42600_SENSOR_MODE_LOW_NOISE; 175a095fadbSJean-Baptiste Maneyrol ret = inv_icm42600_set_gyro_conf(st, &conf, NULL); 176a095fadbSJean-Baptiste Maneyrol if (ret) 177a095fadbSJean-Baptiste Maneyrol goto exit; 178a095fadbSJean-Baptiste Maneyrol 179a095fadbSJean-Baptiste Maneyrol /* read gyro register data */ 180a095fadbSJean-Baptiste Maneyrol data = (__be16 *)&st->buffer[0]; 181a095fadbSJean-Baptiste Maneyrol ret = regmap_bulk_read(st->map, reg, data, sizeof(*data)); 182a095fadbSJean-Baptiste Maneyrol if (ret) 183a095fadbSJean-Baptiste Maneyrol goto exit; 184a095fadbSJean-Baptiste Maneyrol 185a095fadbSJean-Baptiste Maneyrol *val = (int16_t)be16_to_cpup(data); 186a095fadbSJean-Baptiste Maneyrol if (*val == INV_ICM42600_DATA_INVALID) 187a095fadbSJean-Baptiste Maneyrol ret = -EINVAL; 188a095fadbSJean-Baptiste Maneyrol exit: 189a095fadbSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 190a095fadbSJean-Baptiste Maneyrol pm_runtime_mark_last_busy(dev); 191a095fadbSJean-Baptiste Maneyrol pm_runtime_put_autosuspend(dev); 192a095fadbSJean-Baptiste Maneyrol return ret; 193a095fadbSJean-Baptiste Maneyrol } 194a095fadbSJean-Baptiste Maneyrol 195a095fadbSJean-Baptiste Maneyrol /* IIO format int + nano */ 196a095fadbSJean-Baptiste Maneyrol static const int inv_icm42600_gyro_scale[] = { 197a095fadbSJean-Baptiste Maneyrol /* +/- 2000dps => 0.001065264 rad/s */ 198a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_2000DPS] = 0, 199a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_2000DPS + 1] = 1065264, 200a095fadbSJean-Baptiste Maneyrol /* +/- 1000dps => 0.000532632 rad/s */ 201a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_1000DPS] = 0, 202a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_1000DPS + 1] = 532632, 203a095fadbSJean-Baptiste Maneyrol /* +/- 500dps => 0.000266316 rad/s */ 204a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_500DPS] = 0, 205a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_500DPS + 1] = 266316, 206a095fadbSJean-Baptiste Maneyrol /* +/- 250dps => 0.000133158 rad/s */ 207a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_250DPS] = 0, 208a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_250DPS + 1] = 133158, 209a095fadbSJean-Baptiste Maneyrol /* +/- 125dps => 0.000066579 rad/s */ 210a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_125DPS] = 0, 211a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_125DPS + 1] = 66579, 212a095fadbSJean-Baptiste Maneyrol /* +/- 62.5dps => 0.000033290 rad/s */ 213a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_62_5DPS] = 0, 214a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_62_5DPS + 1] = 33290, 215a095fadbSJean-Baptiste Maneyrol /* +/- 31.25dps => 0.000016645 rad/s */ 216a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_31_25DPS] = 0, 217a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_31_25DPS + 1] = 16645, 218a095fadbSJean-Baptiste Maneyrol /* +/- 15.625dps => 0.000008322 rad/s */ 219a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_15_625DPS] = 0, 220a095fadbSJean-Baptiste Maneyrol [2 * INV_ICM42600_GYRO_FS_15_625DPS + 1] = 8322, 221a095fadbSJean-Baptiste Maneyrol }; 222*a1432b5bSJean-Baptiste Maneyrol static const int inv_icm42686_gyro_scale[] = { 223*a1432b5bSJean-Baptiste Maneyrol /* +/- 4000dps => 0.002130529 rad/s */ 224*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_4000DPS] = 0, 225*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_4000DPS + 1] = 2130529, 226*a1432b5bSJean-Baptiste Maneyrol /* +/- 2000dps => 0.001065264 rad/s */ 227*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_2000DPS] = 0, 228*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_2000DPS + 1] = 1065264, 229*a1432b5bSJean-Baptiste Maneyrol /* +/- 1000dps => 0.000532632 rad/s */ 230*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_1000DPS] = 0, 231*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_1000DPS + 1] = 532632, 232*a1432b5bSJean-Baptiste Maneyrol /* +/- 500dps => 0.000266316 rad/s */ 233*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_500DPS] = 0, 234*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_500DPS + 1] = 266316, 235*a1432b5bSJean-Baptiste Maneyrol /* +/- 250dps => 0.000133158 rad/s */ 236*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_250DPS] = 0, 237*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_250DPS + 1] = 133158, 238*a1432b5bSJean-Baptiste Maneyrol /* +/- 125dps => 0.000066579 rad/s */ 239*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_125DPS] = 0, 240*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_125DPS + 1] = 66579, 241*a1432b5bSJean-Baptiste Maneyrol /* +/- 62.5dps => 0.000033290 rad/s */ 242*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_62_5DPS] = 0, 243*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_62_5DPS + 1] = 33290, 244*a1432b5bSJean-Baptiste Maneyrol /* +/- 31.25dps => 0.000016645 rad/s */ 245*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_31_25DPS] = 0, 246*a1432b5bSJean-Baptiste Maneyrol [2 * INV_ICM42686_GYRO_FS_31_25DPS + 1] = 16645, 247*a1432b5bSJean-Baptiste Maneyrol }; 248a095fadbSJean-Baptiste Maneyrol 249*a1432b5bSJean-Baptiste Maneyrol static int inv_icm42600_gyro_read_scale(struct iio_dev *indio_dev, 250a095fadbSJean-Baptiste Maneyrol int *val, int *val2) 251a095fadbSJean-Baptiste Maneyrol { 252*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 253*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev); 254a095fadbSJean-Baptiste Maneyrol unsigned int idx; 255a095fadbSJean-Baptiste Maneyrol 256a095fadbSJean-Baptiste Maneyrol idx = st->conf.gyro.fs; 257a095fadbSJean-Baptiste Maneyrol 258*a1432b5bSJean-Baptiste Maneyrol *val = gyro_st->scales[2 * idx]; 259*a1432b5bSJean-Baptiste Maneyrol *val2 = gyro_st->scales[2 * idx + 1]; 260a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT_PLUS_NANO; 261a095fadbSJean-Baptiste Maneyrol } 262a095fadbSJean-Baptiste Maneyrol 263*a1432b5bSJean-Baptiste Maneyrol static int inv_icm42600_gyro_write_scale(struct iio_dev *indio_dev, 264a095fadbSJean-Baptiste Maneyrol int val, int val2) 265a095fadbSJean-Baptiste Maneyrol { 266*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 267*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev); 268a095fadbSJean-Baptiste Maneyrol struct device *dev = regmap_get_device(st->map); 269a095fadbSJean-Baptiste Maneyrol unsigned int idx; 270a095fadbSJean-Baptiste Maneyrol struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT; 271a095fadbSJean-Baptiste Maneyrol int ret; 272a095fadbSJean-Baptiste Maneyrol 273*a1432b5bSJean-Baptiste Maneyrol for (idx = 0; idx < gyro_st->scales_len; idx += 2) { 274*a1432b5bSJean-Baptiste Maneyrol if (val == gyro_st->scales[idx] && 275*a1432b5bSJean-Baptiste Maneyrol val2 == gyro_st->scales[idx + 1]) 276a095fadbSJean-Baptiste Maneyrol break; 277a095fadbSJean-Baptiste Maneyrol } 278*a1432b5bSJean-Baptiste Maneyrol if (idx >= gyro_st->scales_len) 279a095fadbSJean-Baptiste Maneyrol return -EINVAL; 280a095fadbSJean-Baptiste Maneyrol 281a095fadbSJean-Baptiste Maneyrol conf.fs = idx / 2; 282a095fadbSJean-Baptiste Maneyrol 283a095fadbSJean-Baptiste Maneyrol pm_runtime_get_sync(dev); 284a095fadbSJean-Baptiste Maneyrol mutex_lock(&st->lock); 285a095fadbSJean-Baptiste Maneyrol 286a095fadbSJean-Baptiste Maneyrol ret = inv_icm42600_set_gyro_conf(st, &conf, NULL); 287a095fadbSJean-Baptiste Maneyrol 288a095fadbSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 289a095fadbSJean-Baptiste Maneyrol pm_runtime_mark_last_busy(dev); 290a095fadbSJean-Baptiste Maneyrol pm_runtime_put_autosuspend(dev); 291a095fadbSJean-Baptiste Maneyrol 292a095fadbSJean-Baptiste Maneyrol return ret; 293a095fadbSJean-Baptiste Maneyrol } 294a095fadbSJean-Baptiste Maneyrol 295a095fadbSJean-Baptiste Maneyrol /* IIO format int + micro */ 296a095fadbSJean-Baptiste Maneyrol static const int inv_icm42600_gyro_odr[] = { 297a095fadbSJean-Baptiste Maneyrol /* 12.5Hz */ 298a095fadbSJean-Baptiste Maneyrol 12, 500000, 299a095fadbSJean-Baptiste Maneyrol /* 25Hz */ 300a095fadbSJean-Baptiste Maneyrol 25, 0, 301a095fadbSJean-Baptiste Maneyrol /* 50Hz */ 302a095fadbSJean-Baptiste Maneyrol 50, 0, 303a095fadbSJean-Baptiste Maneyrol /* 100Hz */ 304a095fadbSJean-Baptiste Maneyrol 100, 0, 305a095fadbSJean-Baptiste Maneyrol /* 200Hz */ 306a095fadbSJean-Baptiste Maneyrol 200, 0, 307a095fadbSJean-Baptiste Maneyrol /* 1kHz */ 308a095fadbSJean-Baptiste Maneyrol 1000, 0, 309a095fadbSJean-Baptiste Maneyrol /* 2kHz */ 310a095fadbSJean-Baptiste Maneyrol 2000, 0, 311a095fadbSJean-Baptiste Maneyrol /* 4kHz */ 312a095fadbSJean-Baptiste Maneyrol 4000, 0, 313a095fadbSJean-Baptiste Maneyrol }; 314a095fadbSJean-Baptiste Maneyrol 315a095fadbSJean-Baptiste Maneyrol static const int inv_icm42600_gyro_odr_conv[] = { 316a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_12_5HZ, 317a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_25HZ, 318a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_50HZ, 319a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_100HZ, 320a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_200HZ, 321a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_1KHZ_LN, 322a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_2KHZ_LN, 323a095fadbSJean-Baptiste Maneyrol INV_ICM42600_ODR_4KHZ_LN, 324a095fadbSJean-Baptiste Maneyrol }; 325a095fadbSJean-Baptiste Maneyrol 326a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_read_odr(struct inv_icm42600_state *st, 327a095fadbSJean-Baptiste Maneyrol int *val, int *val2) 328a095fadbSJean-Baptiste Maneyrol { 329a095fadbSJean-Baptiste Maneyrol unsigned int odr; 330a095fadbSJean-Baptiste Maneyrol unsigned int i; 331a095fadbSJean-Baptiste Maneyrol 332a095fadbSJean-Baptiste Maneyrol odr = st->conf.gyro.odr; 333a095fadbSJean-Baptiste Maneyrol 334a095fadbSJean-Baptiste Maneyrol for (i = 0; i < ARRAY_SIZE(inv_icm42600_gyro_odr_conv); ++i) { 335a095fadbSJean-Baptiste Maneyrol if (inv_icm42600_gyro_odr_conv[i] == odr) 336a095fadbSJean-Baptiste Maneyrol break; 337a095fadbSJean-Baptiste Maneyrol } 338a095fadbSJean-Baptiste Maneyrol if (i >= ARRAY_SIZE(inv_icm42600_gyro_odr_conv)) 339a095fadbSJean-Baptiste Maneyrol return -EINVAL; 340a095fadbSJean-Baptiste Maneyrol 341a095fadbSJean-Baptiste Maneyrol *val = inv_icm42600_gyro_odr[2 * i]; 342a095fadbSJean-Baptiste Maneyrol *val2 = inv_icm42600_gyro_odr[2 * i + 1]; 343a095fadbSJean-Baptiste Maneyrol 344a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT_PLUS_MICRO; 345a095fadbSJean-Baptiste Maneyrol } 346a095fadbSJean-Baptiste Maneyrol 347ec74ae9fSJean-Baptiste Maneyrol static int inv_icm42600_gyro_write_odr(struct iio_dev *indio_dev, 348a095fadbSJean-Baptiste Maneyrol int val, int val2) 349a095fadbSJean-Baptiste Maneyrol { 350ec74ae9fSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 351*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev); 352*a1432b5bSJean-Baptiste Maneyrol struct inv_sensors_timestamp *ts = &gyro_st->ts; 353a095fadbSJean-Baptiste Maneyrol struct device *dev = regmap_get_device(st->map); 354a095fadbSJean-Baptiste Maneyrol unsigned int idx; 355a095fadbSJean-Baptiste Maneyrol struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT; 356a095fadbSJean-Baptiste Maneyrol int ret; 357a095fadbSJean-Baptiste Maneyrol 358a095fadbSJean-Baptiste Maneyrol for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_gyro_odr); idx += 2) { 359a095fadbSJean-Baptiste Maneyrol if (val == inv_icm42600_gyro_odr[idx] && 360a095fadbSJean-Baptiste Maneyrol val2 == inv_icm42600_gyro_odr[idx + 1]) 361a095fadbSJean-Baptiste Maneyrol break; 362a095fadbSJean-Baptiste Maneyrol } 363a095fadbSJean-Baptiste Maneyrol if (idx >= ARRAY_SIZE(inv_icm42600_gyro_odr)) 364a095fadbSJean-Baptiste Maneyrol return -EINVAL; 365a095fadbSJean-Baptiste Maneyrol 366a095fadbSJean-Baptiste Maneyrol conf.odr = inv_icm42600_gyro_odr_conv[idx / 2]; 367a095fadbSJean-Baptiste Maneyrol 368a095fadbSJean-Baptiste Maneyrol pm_runtime_get_sync(dev); 369a095fadbSJean-Baptiste Maneyrol mutex_lock(&st->lock); 370a095fadbSJean-Baptiste Maneyrol 3710ecc363cSJean-Baptiste Maneyrol ret = inv_sensors_timestamp_update_odr(ts, inv_icm42600_odr_to_period(conf.odr), 372ec74ae9fSJean-Baptiste Maneyrol iio_buffer_enabled(indio_dev)); 373ec74ae9fSJean-Baptiste Maneyrol if (ret) 374ec74ae9fSJean-Baptiste Maneyrol goto out_unlock; 375ec74ae9fSJean-Baptiste Maneyrol 376a095fadbSJean-Baptiste Maneyrol ret = inv_icm42600_set_gyro_conf(st, &conf, NULL); 3777f85e42aSJean-Baptiste Maneyrol if (ret) 3787f85e42aSJean-Baptiste Maneyrol goto out_unlock; 3797f85e42aSJean-Baptiste Maneyrol inv_icm42600_buffer_update_fifo_period(st); 3807f85e42aSJean-Baptiste Maneyrol inv_icm42600_buffer_update_watermark(st); 381a095fadbSJean-Baptiste Maneyrol 3827f85e42aSJean-Baptiste Maneyrol out_unlock: 383a095fadbSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 384a095fadbSJean-Baptiste Maneyrol pm_runtime_mark_last_busy(dev); 385a095fadbSJean-Baptiste Maneyrol pm_runtime_put_autosuspend(dev); 386a095fadbSJean-Baptiste Maneyrol 387a095fadbSJean-Baptiste Maneyrol return ret; 388a095fadbSJean-Baptiste Maneyrol } 389a095fadbSJean-Baptiste Maneyrol 390a095fadbSJean-Baptiste Maneyrol /* 391a095fadbSJean-Baptiste Maneyrol * Calibration bias values, IIO range format int + nano. 392a095fadbSJean-Baptiste Maneyrol * Value is limited to +/-64dps coded on 12 bits signed. Step is 1/32 dps. 393a095fadbSJean-Baptiste Maneyrol */ 394a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_calibbias[] = { 395a095fadbSJean-Baptiste Maneyrol -1, 117010721, /* min: -1.117010721 rad/s */ 396a095fadbSJean-Baptiste Maneyrol 0, 545415, /* step: 0.000545415 rad/s */ 397a095fadbSJean-Baptiste Maneyrol 1, 116465306, /* max: 1.116465306 rad/s */ 398a095fadbSJean-Baptiste Maneyrol }; 399a095fadbSJean-Baptiste Maneyrol 400a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_read_offset(struct inv_icm42600_state *st, 401a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 402a095fadbSJean-Baptiste Maneyrol int *val, int *val2) 403a095fadbSJean-Baptiste Maneyrol { 404a095fadbSJean-Baptiste Maneyrol struct device *dev = regmap_get_device(st->map); 405a095fadbSJean-Baptiste Maneyrol int64_t val64; 406a095fadbSJean-Baptiste Maneyrol int32_t bias; 407a095fadbSJean-Baptiste Maneyrol unsigned int reg; 408a095fadbSJean-Baptiste Maneyrol int16_t offset; 409a095fadbSJean-Baptiste Maneyrol uint8_t data[2]; 410a095fadbSJean-Baptiste Maneyrol int ret; 411a095fadbSJean-Baptiste Maneyrol 412a095fadbSJean-Baptiste Maneyrol if (chan->type != IIO_ANGL_VEL) 413a095fadbSJean-Baptiste Maneyrol return -EINVAL; 414a095fadbSJean-Baptiste Maneyrol 415a095fadbSJean-Baptiste Maneyrol switch (chan->channel2) { 416a095fadbSJean-Baptiste Maneyrol case IIO_MOD_X: 417a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_OFFSET_USER0; 418a095fadbSJean-Baptiste Maneyrol break; 419a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Y: 420a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_OFFSET_USER1; 421a095fadbSJean-Baptiste Maneyrol break; 422a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Z: 423a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_OFFSET_USER3; 424a095fadbSJean-Baptiste Maneyrol break; 425a095fadbSJean-Baptiste Maneyrol default: 426a095fadbSJean-Baptiste Maneyrol return -EINVAL; 427a095fadbSJean-Baptiste Maneyrol } 428a095fadbSJean-Baptiste Maneyrol 429a095fadbSJean-Baptiste Maneyrol pm_runtime_get_sync(dev); 430a095fadbSJean-Baptiste Maneyrol mutex_lock(&st->lock); 431a095fadbSJean-Baptiste Maneyrol 432a095fadbSJean-Baptiste Maneyrol ret = regmap_bulk_read(st->map, reg, st->buffer, sizeof(data)); 433a095fadbSJean-Baptiste Maneyrol memcpy(data, st->buffer, sizeof(data)); 434a095fadbSJean-Baptiste Maneyrol 435a095fadbSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 436a095fadbSJean-Baptiste Maneyrol pm_runtime_mark_last_busy(dev); 437a095fadbSJean-Baptiste Maneyrol pm_runtime_put_autosuspend(dev); 438a095fadbSJean-Baptiste Maneyrol if (ret) 439a095fadbSJean-Baptiste Maneyrol return ret; 440a095fadbSJean-Baptiste Maneyrol 441a095fadbSJean-Baptiste Maneyrol /* 12 bits signed value */ 442a095fadbSJean-Baptiste Maneyrol switch (chan->channel2) { 443a095fadbSJean-Baptiste Maneyrol case IIO_MOD_X: 444a095fadbSJean-Baptiste Maneyrol offset = sign_extend32(((data[1] & 0x0F) << 8) | data[0], 11); 445a095fadbSJean-Baptiste Maneyrol break; 446a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Y: 447a095fadbSJean-Baptiste Maneyrol offset = sign_extend32(((data[0] & 0xF0) << 4) | data[1], 11); 448a095fadbSJean-Baptiste Maneyrol break; 449a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Z: 450a095fadbSJean-Baptiste Maneyrol offset = sign_extend32(((data[1] & 0x0F) << 8) | data[0], 11); 451a095fadbSJean-Baptiste Maneyrol break; 452a095fadbSJean-Baptiste Maneyrol default: 453a095fadbSJean-Baptiste Maneyrol return -EINVAL; 454a095fadbSJean-Baptiste Maneyrol } 455a095fadbSJean-Baptiste Maneyrol 456a095fadbSJean-Baptiste Maneyrol /* 457a095fadbSJean-Baptiste Maneyrol * convert raw offset to dps then to rad/s 458a095fadbSJean-Baptiste Maneyrol * 12 bits signed raw max 64 to dps: 64 / 2048 459a095fadbSJean-Baptiste Maneyrol * dps to rad: Pi / 180 460a095fadbSJean-Baptiste Maneyrol * result in nano (1000000000) 461a095fadbSJean-Baptiste Maneyrol * (offset * 64 * Pi * 1000000000) / (2048 * 180) 462a095fadbSJean-Baptiste Maneyrol */ 463a095fadbSJean-Baptiste Maneyrol val64 = (int64_t)offset * 64LL * 3141592653LL; 464a095fadbSJean-Baptiste Maneyrol /* for rounding, add + or - divisor (2048 * 180) divided by 2 */ 465a095fadbSJean-Baptiste Maneyrol if (val64 >= 0) 466a095fadbSJean-Baptiste Maneyrol val64 += 2048 * 180 / 2; 467a095fadbSJean-Baptiste Maneyrol else 468a095fadbSJean-Baptiste Maneyrol val64 -= 2048 * 180 / 2; 469a095fadbSJean-Baptiste Maneyrol bias = div_s64(val64, 2048 * 180); 470a095fadbSJean-Baptiste Maneyrol *val = bias / 1000000000L; 471a095fadbSJean-Baptiste Maneyrol *val2 = bias % 1000000000L; 472a095fadbSJean-Baptiste Maneyrol 473a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT_PLUS_NANO; 474a095fadbSJean-Baptiste Maneyrol } 475a095fadbSJean-Baptiste Maneyrol 476a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_write_offset(struct inv_icm42600_state *st, 477a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 478a095fadbSJean-Baptiste Maneyrol int val, int val2) 479a095fadbSJean-Baptiste Maneyrol { 480a095fadbSJean-Baptiste Maneyrol struct device *dev = regmap_get_device(st->map); 481a095fadbSJean-Baptiste Maneyrol int64_t val64, min, max; 482a095fadbSJean-Baptiste Maneyrol unsigned int reg, regval; 483a095fadbSJean-Baptiste Maneyrol int16_t offset; 484a095fadbSJean-Baptiste Maneyrol int ret; 485a095fadbSJean-Baptiste Maneyrol 486a095fadbSJean-Baptiste Maneyrol if (chan->type != IIO_ANGL_VEL) 487a095fadbSJean-Baptiste Maneyrol return -EINVAL; 488a095fadbSJean-Baptiste Maneyrol 489a095fadbSJean-Baptiste Maneyrol switch (chan->channel2) { 490a095fadbSJean-Baptiste Maneyrol case IIO_MOD_X: 491a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_OFFSET_USER0; 492a095fadbSJean-Baptiste Maneyrol break; 493a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Y: 494a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_OFFSET_USER1; 495a095fadbSJean-Baptiste Maneyrol break; 496a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Z: 497a095fadbSJean-Baptiste Maneyrol reg = INV_ICM42600_REG_OFFSET_USER3; 498a095fadbSJean-Baptiste Maneyrol break; 499a095fadbSJean-Baptiste Maneyrol default: 500a095fadbSJean-Baptiste Maneyrol return -EINVAL; 501a095fadbSJean-Baptiste Maneyrol } 502a095fadbSJean-Baptiste Maneyrol 503a095fadbSJean-Baptiste Maneyrol /* inv_icm42600_gyro_calibbias: min - step - max in nano */ 504a095fadbSJean-Baptiste Maneyrol min = (int64_t)inv_icm42600_gyro_calibbias[0] * 1000000000LL + 505a095fadbSJean-Baptiste Maneyrol (int64_t)inv_icm42600_gyro_calibbias[1]; 506a095fadbSJean-Baptiste Maneyrol max = (int64_t)inv_icm42600_gyro_calibbias[4] * 1000000000LL + 507a095fadbSJean-Baptiste Maneyrol (int64_t)inv_icm42600_gyro_calibbias[5]; 508a095fadbSJean-Baptiste Maneyrol val64 = (int64_t)val * 1000000000LL + (int64_t)val2; 509a095fadbSJean-Baptiste Maneyrol if (val64 < min || val64 > max) 510a095fadbSJean-Baptiste Maneyrol return -EINVAL; 511a095fadbSJean-Baptiste Maneyrol 512a095fadbSJean-Baptiste Maneyrol /* 513a095fadbSJean-Baptiste Maneyrol * convert rad/s to dps then to raw value 514a095fadbSJean-Baptiste Maneyrol * rad to dps: 180 / Pi 515a095fadbSJean-Baptiste Maneyrol * dps to raw 12 bits signed, max 64: 2048 / 64 516a095fadbSJean-Baptiste Maneyrol * val in nano (1000000000) 517a095fadbSJean-Baptiste Maneyrol * val * 180 * 2048 / (Pi * 1000000000 * 64) 518a095fadbSJean-Baptiste Maneyrol */ 519a095fadbSJean-Baptiste Maneyrol val64 = val64 * 180LL * 2048LL; 520a095fadbSJean-Baptiste Maneyrol /* for rounding, add + or - divisor (3141592653 * 64) divided by 2 */ 521a095fadbSJean-Baptiste Maneyrol if (val64 >= 0) 522a095fadbSJean-Baptiste Maneyrol val64 += 3141592653LL * 64LL / 2LL; 523a095fadbSJean-Baptiste Maneyrol else 524a095fadbSJean-Baptiste Maneyrol val64 -= 3141592653LL * 64LL / 2LL; 525a095fadbSJean-Baptiste Maneyrol offset = div64_s64(val64, 3141592653LL * 64LL); 526a095fadbSJean-Baptiste Maneyrol 527a095fadbSJean-Baptiste Maneyrol /* clamp value limited to 12 bits signed */ 528a095fadbSJean-Baptiste Maneyrol if (offset < -2048) 529a095fadbSJean-Baptiste Maneyrol offset = -2048; 530a095fadbSJean-Baptiste Maneyrol else if (offset > 2047) 531a095fadbSJean-Baptiste Maneyrol offset = 2047; 532a095fadbSJean-Baptiste Maneyrol 533a095fadbSJean-Baptiste Maneyrol pm_runtime_get_sync(dev); 534a095fadbSJean-Baptiste Maneyrol mutex_lock(&st->lock); 535a095fadbSJean-Baptiste Maneyrol 536a095fadbSJean-Baptiste Maneyrol switch (chan->channel2) { 537a095fadbSJean-Baptiste Maneyrol case IIO_MOD_X: 538a095fadbSJean-Baptiste Maneyrol /* OFFSET_USER1 register is shared */ 539a095fadbSJean-Baptiste Maneyrol ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER1, 540a095fadbSJean-Baptiste Maneyrol ®val); 541a095fadbSJean-Baptiste Maneyrol if (ret) 542a095fadbSJean-Baptiste Maneyrol goto out_unlock; 543a095fadbSJean-Baptiste Maneyrol st->buffer[0] = offset & 0xFF; 544a095fadbSJean-Baptiste Maneyrol st->buffer[1] = (regval & 0xF0) | ((offset & 0xF00) >> 8); 545a095fadbSJean-Baptiste Maneyrol break; 546a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Y: 547a095fadbSJean-Baptiste Maneyrol /* OFFSET_USER1 register is shared */ 548a095fadbSJean-Baptiste Maneyrol ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER1, 549a095fadbSJean-Baptiste Maneyrol ®val); 550a095fadbSJean-Baptiste Maneyrol if (ret) 551a095fadbSJean-Baptiste Maneyrol goto out_unlock; 552a095fadbSJean-Baptiste Maneyrol st->buffer[0] = ((offset & 0xF00) >> 4) | (regval & 0x0F); 553a095fadbSJean-Baptiste Maneyrol st->buffer[1] = offset & 0xFF; 554a095fadbSJean-Baptiste Maneyrol break; 555a095fadbSJean-Baptiste Maneyrol case IIO_MOD_Z: 556a095fadbSJean-Baptiste Maneyrol /* OFFSET_USER4 register is shared */ 557a095fadbSJean-Baptiste Maneyrol ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER4, 558a095fadbSJean-Baptiste Maneyrol ®val); 559a095fadbSJean-Baptiste Maneyrol if (ret) 560a095fadbSJean-Baptiste Maneyrol goto out_unlock; 561a095fadbSJean-Baptiste Maneyrol st->buffer[0] = offset & 0xFF; 562a095fadbSJean-Baptiste Maneyrol st->buffer[1] = (regval & 0xF0) | ((offset & 0xF00) >> 8); 563a095fadbSJean-Baptiste Maneyrol break; 564a095fadbSJean-Baptiste Maneyrol default: 565a095fadbSJean-Baptiste Maneyrol ret = -EINVAL; 566a095fadbSJean-Baptiste Maneyrol goto out_unlock; 567a095fadbSJean-Baptiste Maneyrol } 568a095fadbSJean-Baptiste Maneyrol 569a095fadbSJean-Baptiste Maneyrol ret = regmap_bulk_write(st->map, reg, st->buffer, 2); 570a095fadbSJean-Baptiste Maneyrol 571a095fadbSJean-Baptiste Maneyrol out_unlock: 572a095fadbSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 573a095fadbSJean-Baptiste Maneyrol pm_runtime_mark_last_busy(dev); 574a095fadbSJean-Baptiste Maneyrol pm_runtime_put_autosuspend(dev); 575a095fadbSJean-Baptiste Maneyrol return ret; 576a095fadbSJean-Baptiste Maneyrol } 577a095fadbSJean-Baptiste Maneyrol 578a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_read_raw(struct iio_dev *indio_dev, 579a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 580a095fadbSJean-Baptiste Maneyrol int *val, int *val2, long mask) 581a095fadbSJean-Baptiste Maneyrol { 582a095fadbSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 583a095fadbSJean-Baptiste Maneyrol int16_t data; 584a095fadbSJean-Baptiste Maneyrol int ret; 585a095fadbSJean-Baptiste Maneyrol 586bc3eb020SJean-Baptiste Maneyrol switch (chan->type) { 587bc3eb020SJean-Baptiste Maneyrol case IIO_ANGL_VEL: 588bc3eb020SJean-Baptiste Maneyrol break; 589bc3eb020SJean-Baptiste Maneyrol case IIO_TEMP: 590bc3eb020SJean-Baptiste Maneyrol return inv_icm42600_temp_read_raw(indio_dev, chan, val, val2, mask); 591bc3eb020SJean-Baptiste Maneyrol default: 592a095fadbSJean-Baptiste Maneyrol return -EINVAL; 593bc3eb020SJean-Baptiste Maneyrol } 594a095fadbSJean-Baptiste Maneyrol 595a095fadbSJean-Baptiste Maneyrol switch (mask) { 596a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_RAW: 597a095fadbSJean-Baptiste Maneyrol ret = iio_device_claim_direct_mode(indio_dev); 598a095fadbSJean-Baptiste Maneyrol if (ret) 599a095fadbSJean-Baptiste Maneyrol return ret; 600a095fadbSJean-Baptiste Maneyrol ret = inv_icm42600_gyro_read_sensor(st, chan, &data); 601a095fadbSJean-Baptiste Maneyrol iio_device_release_direct_mode(indio_dev); 602a095fadbSJean-Baptiste Maneyrol if (ret) 603a095fadbSJean-Baptiste Maneyrol return ret; 604a095fadbSJean-Baptiste Maneyrol *val = data; 605a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT; 606a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SCALE: 607*a1432b5bSJean-Baptiste Maneyrol return inv_icm42600_gyro_read_scale(indio_dev, val, val2); 608a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SAMP_FREQ: 609a095fadbSJean-Baptiste Maneyrol return inv_icm42600_gyro_read_odr(st, val, val2); 610a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_CALIBBIAS: 611a095fadbSJean-Baptiste Maneyrol return inv_icm42600_gyro_read_offset(st, chan, val, val2); 612a095fadbSJean-Baptiste Maneyrol default: 613a095fadbSJean-Baptiste Maneyrol return -EINVAL; 614a095fadbSJean-Baptiste Maneyrol } 615a095fadbSJean-Baptiste Maneyrol } 616a095fadbSJean-Baptiste Maneyrol 617a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_read_avail(struct iio_dev *indio_dev, 618a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 619a095fadbSJean-Baptiste Maneyrol const int **vals, 620a095fadbSJean-Baptiste Maneyrol int *type, int *length, long mask) 621a095fadbSJean-Baptiste Maneyrol { 622*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev); 623*a1432b5bSJean-Baptiste Maneyrol 624a095fadbSJean-Baptiste Maneyrol if (chan->type != IIO_ANGL_VEL) 625a095fadbSJean-Baptiste Maneyrol return -EINVAL; 626a095fadbSJean-Baptiste Maneyrol 627a095fadbSJean-Baptiste Maneyrol switch (mask) { 628a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SCALE: 629*a1432b5bSJean-Baptiste Maneyrol *vals = gyro_st->scales; 630a095fadbSJean-Baptiste Maneyrol *type = IIO_VAL_INT_PLUS_NANO; 631*a1432b5bSJean-Baptiste Maneyrol *length = gyro_st->scales_len; 632a095fadbSJean-Baptiste Maneyrol return IIO_AVAIL_LIST; 633a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SAMP_FREQ: 634a095fadbSJean-Baptiste Maneyrol *vals = inv_icm42600_gyro_odr; 635a095fadbSJean-Baptiste Maneyrol *type = IIO_VAL_INT_PLUS_MICRO; 636a095fadbSJean-Baptiste Maneyrol *length = ARRAY_SIZE(inv_icm42600_gyro_odr); 637a095fadbSJean-Baptiste Maneyrol return IIO_AVAIL_LIST; 638a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_CALIBBIAS: 639a095fadbSJean-Baptiste Maneyrol *vals = inv_icm42600_gyro_calibbias; 640a095fadbSJean-Baptiste Maneyrol *type = IIO_VAL_INT_PLUS_NANO; 641a095fadbSJean-Baptiste Maneyrol return IIO_AVAIL_RANGE; 642a095fadbSJean-Baptiste Maneyrol default: 643a095fadbSJean-Baptiste Maneyrol return -EINVAL; 644a095fadbSJean-Baptiste Maneyrol } 645a095fadbSJean-Baptiste Maneyrol } 646a095fadbSJean-Baptiste Maneyrol 647a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_write_raw(struct iio_dev *indio_dev, 648a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 649a095fadbSJean-Baptiste Maneyrol int val, int val2, long mask) 650a095fadbSJean-Baptiste Maneyrol { 651a095fadbSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 652a095fadbSJean-Baptiste Maneyrol int ret; 653a095fadbSJean-Baptiste Maneyrol 654a095fadbSJean-Baptiste Maneyrol if (chan->type != IIO_ANGL_VEL) 655a095fadbSJean-Baptiste Maneyrol return -EINVAL; 656a095fadbSJean-Baptiste Maneyrol 657a095fadbSJean-Baptiste Maneyrol switch (mask) { 658a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SCALE: 659a095fadbSJean-Baptiste Maneyrol ret = iio_device_claim_direct_mode(indio_dev); 660a095fadbSJean-Baptiste Maneyrol if (ret) 661a095fadbSJean-Baptiste Maneyrol return ret; 662*a1432b5bSJean-Baptiste Maneyrol ret = inv_icm42600_gyro_write_scale(indio_dev, val, val2); 663a095fadbSJean-Baptiste Maneyrol iio_device_release_direct_mode(indio_dev); 664a095fadbSJean-Baptiste Maneyrol return ret; 665a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SAMP_FREQ: 666ec74ae9fSJean-Baptiste Maneyrol return inv_icm42600_gyro_write_odr(indio_dev, val, val2); 667a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_CALIBBIAS: 668a095fadbSJean-Baptiste Maneyrol ret = iio_device_claim_direct_mode(indio_dev); 669a095fadbSJean-Baptiste Maneyrol if (ret) 670a095fadbSJean-Baptiste Maneyrol return ret; 671a095fadbSJean-Baptiste Maneyrol ret = inv_icm42600_gyro_write_offset(st, chan, val, val2); 672a095fadbSJean-Baptiste Maneyrol iio_device_release_direct_mode(indio_dev); 673a095fadbSJean-Baptiste Maneyrol return ret; 674a095fadbSJean-Baptiste Maneyrol default: 675a095fadbSJean-Baptiste Maneyrol return -EINVAL; 676a095fadbSJean-Baptiste Maneyrol } 677a095fadbSJean-Baptiste Maneyrol } 678a095fadbSJean-Baptiste Maneyrol 679a095fadbSJean-Baptiste Maneyrol static int inv_icm42600_gyro_write_raw_get_fmt(struct iio_dev *indio_dev, 680a095fadbSJean-Baptiste Maneyrol struct iio_chan_spec const *chan, 681a095fadbSJean-Baptiste Maneyrol long mask) 682a095fadbSJean-Baptiste Maneyrol { 683a095fadbSJean-Baptiste Maneyrol if (chan->type != IIO_ANGL_VEL) 684a095fadbSJean-Baptiste Maneyrol return -EINVAL; 685a095fadbSJean-Baptiste Maneyrol 686a095fadbSJean-Baptiste Maneyrol switch (mask) { 687a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SCALE: 688a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT_PLUS_NANO; 689a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_SAMP_FREQ: 690a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT_PLUS_MICRO; 691a095fadbSJean-Baptiste Maneyrol case IIO_CHAN_INFO_CALIBBIAS: 692a095fadbSJean-Baptiste Maneyrol return IIO_VAL_INT_PLUS_NANO; 693a095fadbSJean-Baptiste Maneyrol default: 694a095fadbSJean-Baptiste Maneyrol return -EINVAL; 695a095fadbSJean-Baptiste Maneyrol } 696a095fadbSJean-Baptiste Maneyrol } 697a095fadbSJean-Baptiste Maneyrol 6987f85e42aSJean-Baptiste Maneyrol static int inv_icm42600_gyro_hwfifo_set_watermark(struct iio_dev *indio_dev, 6997f85e42aSJean-Baptiste Maneyrol unsigned int val) 7007f85e42aSJean-Baptiste Maneyrol { 7017f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 7027f85e42aSJean-Baptiste Maneyrol int ret; 7037f85e42aSJean-Baptiste Maneyrol 7047f85e42aSJean-Baptiste Maneyrol mutex_lock(&st->lock); 7057f85e42aSJean-Baptiste Maneyrol 7067f85e42aSJean-Baptiste Maneyrol st->fifo.watermark.gyro = val; 7077f85e42aSJean-Baptiste Maneyrol ret = inv_icm42600_buffer_update_watermark(st); 7087f85e42aSJean-Baptiste Maneyrol 7097f85e42aSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 7107f85e42aSJean-Baptiste Maneyrol 7117f85e42aSJean-Baptiste Maneyrol return ret; 7127f85e42aSJean-Baptiste Maneyrol } 7137f85e42aSJean-Baptiste Maneyrol 7147f85e42aSJean-Baptiste Maneyrol static int inv_icm42600_gyro_hwfifo_flush(struct iio_dev *indio_dev, 7157f85e42aSJean-Baptiste Maneyrol unsigned int count) 7167f85e42aSJean-Baptiste Maneyrol { 7177f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 7187f85e42aSJean-Baptiste Maneyrol int ret; 7197f85e42aSJean-Baptiste Maneyrol 7207f85e42aSJean-Baptiste Maneyrol if (count == 0) 7217f85e42aSJean-Baptiste Maneyrol return 0; 7227f85e42aSJean-Baptiste Maneyrol 7237f85e42aSJean-Baptiste Maneyrol mutex_lock(&st->lock); 7247f85e42aSJean-Baptiste Maneyrol 7257f85e42aSJean-Baptiste Maneyrol ret = inv_icm42600_buffer_hwfifo_flush(st, count); 7267f85e42aSJean-Baptiste Maneyrol if (!ret) 7277f85e42aSJean-Baptiste Maneyrol ret = st->fifo.nb.gyro; 7287f85e42aSJean-Baptiste Maneyrol 7297f85e42aSJean-Baptiste Maneyrol mutex_unlock(&st->lock); 7307f85e42aSJean-Baptiste Maneyrol 7317f85e42aSJean-Baptiste Maneyrol return ret; 7327f85e42aSJean-Baptiste Maneyrol } 7337f85e42aSJean-Baptiste Maneyrol 734a095fadbSJean-Baptiste Maneyrol static const struct iio_info inv_icm42600_gyro_info = { 735a095fadbSJean-Baptiste Maneyrol .read_raw = inv_icm42600_gyro_read_raw, 736a095fadbSJean-Baptiste Maneyrol .read_avail = inv_icm42600_gyro_read_avail, 737a095fadbSJean-Baptiste Maneyrol .write_raw = inv_icm42600_gyro_write_raw, 738a095fadbSJean-Baptiste Maneyrol .write_raw_get_fmt = inv_icm42600_gyro_write_raw_get_fmt, 739a095fadbSJean-Baptiste Maneyrol .debugfs_reg_access = inv_icm42600_debugfs_reg, 7407f85e42aSJean-Baptiste Maneyrol .update_scan_mode = inv_icm42600_gyro_update_scan_mode, 7417f85e42aSJean-Baptiste Maneyrol .hwfifo_set_watermark = inv_icm42600_gyro_hwfifo_set_watermark, 7427f85e42aSJean-Baptiste Maneyrol .hwfifo_flush_to_buffer = inv_icm42600_gyro_hwfifo_flush, 743a095fadbSJean-Baptiste Maneyrol }; 744a095fadbSJean-Baptiste Maneyrol 745a095fadbSJean-Baptiste Maneyrol struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st) 746a095fadbSJean-Baptiste Maneyrol { 747a095fadbSJean-Baptiste Maneyrol struct device *dev = regmap_get_device(st->map); 748a095fadbSJean-Baptiste Maneyrol const char *name; 749*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st; 7500ecc363cSJean-Baptiste Maneyrol struct inv_sensors_timestamp_chip ts_chip; 751a095fadbSJean-Baptiste Maneyrol struct iio_dev *indio_dev; 752a095fadbSJean-Baptiste Maneyrol int ret; 753a095fadbSJean-Baptiste Maneyrol 754a095fadbSJean-Baptiste Maneyrol name = devm_kasprintf(dev, GFP_KERNEL, "%s-gyro", st->name); 755a095fadbSJean-Baptiste Maneyrol if (!name) 756a095fadbSJean-Baptiste Maneyrol return ERR_PTR(-ENOMEM); 757a095fadbSJean-Baptiste Maneyrol 758*a1432b5bSJean-Baptiste Maneyrol indio_dev = devm_iio_device_alloc(dev, sizeof(*gyro_st)); 759a095fadbSJean-Baptiste Maneyrol if (!indio_dev) 760a095fadbSJean-Baptiste Maneyrol return ERR_PTR(-ENOMEM); 761*a1432b5bSJean-Baptiste Maneyrol gyro_st = iio_priv(indio_dev); 762*a1432b5bSJean-Baptiste Maneyrol 763*a1432b5bSJean-Baptiste Maneyrol switch (st->chip) { 764*a1432b5bSJean-Baptiste Maneyrol case INV_CHIP_ICM42686: 765*a1432b5bSJean-Baptiste Maneyrol gyro_st->scales = inv_icm42686_gyro_scale; 766*a1432b5bSJean-Baptiste Maneyrol gyro_st->scales_len = ARRAY_SIZE(inv_icm42686_gyro_scale); 767*a1432b5bSJean-Baptiste Maneyrol break; 768*a1432b5bSJean-Baptiste Maneyrol default: 769*a1432b5bSJean-Baptiste Maneyrol gyro_st->scales = inv_icm42600_gyro_scale; 770*a1432b5bSJean-Baptiste Maneyrol gyro_st->scales_len = ARRAY_SIZE(inv_icm42600_gyro_scale); 771*a1432b5bSJean-Baptiste Maneyrol break; 772*a1432b5bSJean-Baptiste Maneyrol } 773a095fadbSJean-Baptiste Maneyrol 7740ecc363cSJean-Baptiste Maneyrol /* 7750ecc363cSJean-Baptiste Maneyrol * clock period is 32kHz (31250ns) 7760ecc363cSJean-Baptiste Maneyrol * jitter is +/- 2% (20 per mille) 7770ecc363cSJean-Baptiste Maneyrol */ 7780ecc363cSJean-Baptiste Maneyrol ts_chip.clock_period = 31250; 7790ecc363cSJean-Baptiste Maneyrol ts_chip.jitter = 20; 7800ecc363cSJean-Baptiste Maneyrol ts_chip.init_period = inv_icm42600_odr_to_period(st->conf.accel.odr); 781*a1432b5bSJean-Baptiste Maneyrol inv_sensors_timestamp_init(&gyro_st->ts, &ts_chip); 782ec74ae9fSJean-Baptiste Maneyrol 783a095fadbSJean-Baptiste Maneyrol iio_device_set_drvdata(indio_dev, st); 784a095fadbSJean-Baptiste Maneyrol indio_dev->name = name; 785a095fadbSJean-Baptiste Maneyrol indio_dev->info = &inv_icm42600_gyro_info; 78617395ce2SAlexandru Ardelean indio_dev->modes = INDIO_DIRECT_MODE; 787a095fadbSJean-Baptiste Maneyrol indio_dev->channels = inv_icm42600_gyro_channels; 788a095fadbSJean-Baptiste Maneyrol indio_dev->num_channels = ARRAY_SIZE(inv_icm42600_gyro_channels); 7897f85e42aSJean-Baptiste Maneyrol indio_dev->available_scan_masks = inv_icm42600_gyro_scan_masks; 7907f85e42aSJean-Baptiste Maneyrol indio_dev->setup_ops = &inv_icm42600_buffer_ops; 7917f85e42aSJean-Baptiste Maneyrol 79217395ce2SAlexandru Ardelean ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, 79317395ce2SAlexandru Ardelean &inv_icm42600_buffer_ops); 79417395ce2SAlexandru Ardelean if (ret) 79517395ce2SAlexandru Ardelean return ERR_PTR(ret); 796a095fadbSJean-Baptiste Maneyrol 797a095fadbSJean-Baptiste Maneyrol ret = devm_iio_device_register(dev, indio_dev); 798a095fadbSJean-Baptiste Maneyrol if (ret) 799a095fadbSJean-Baptiste Maneyrol return ERR_PTR(ret); 800a095fadbSJean-Baptiste Maneyrol 801a095fadbSJean-Baptiste Maneyrol return indio_dev; 802a095fadbSJean-Baptiste Maneyrol } 8037f85e42aSJean-Baptiste Maneyrol 8047f85e42aSJean-Baptiste Maneyrol int inv_icm42600_gyro_parse_fifo(struct iio_dev *indio_dev) 8057f85e42aSJean-Baptiste Maneyrol { 8067f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev); 807*a1432b5bSJean-Baptiste Maneyrol struct inv_icm42600_sensor_state *gyro_st = iio_priv(indio_dev); 808*a1432b5bSJean-Baptiste Maneyrol struct inv_sensors_timestamp *ts = &gyro_st->ts; 8097f85e42aSJean-Baptiste Maneyrol ssize_t i, size; 810ec74ae9fSJean-Baptiste Maneyrol unsigned int no; 8117f85e42aSJean-Baptiste Maneyrol const void *accel, *gyro, *timestamp; 8127f85e42aSJean-Baptiste Maneyrol const int8_t *temp; 8137f85e42aSJean-Baptiste Maneyrol unsigned int odr; 814ec74ae9fSJean-Baptiste Maneyrol int64_t ts_val; 8157f85e42aSJean-Baptiste Maneyrol struct inv_icm42600_gyro_buffer buffer; 8167f85e42aSJean-Baptiste Maneyrol 8177f85e42aSJean-Baptiste Maneyrol /* parse all fifo packets */ 818ec74ae9fSJean-Baptiste Maneyrol for (i = 0, no = 0; i < st->fifo.count; i += size, ++no) { 8197f85e42aSJean-Baptiste Maneyrol size = inv_icm42600_fifo_decode_packet(&st->fifo.data[i], 8207f85e42aSJean-Baptiste Maneyrol &accel, &gyro, &temp, ×tamp, &odr); 8217f85e42aSJean-Baptiste Maneyrol /* quit if error or FIFO is empty */ 8227f85e42aSJean-Baptiste Maneyrol if (size <= 0) 8237f85e42aSJean-Baptiste Maneyrol return size; 8247f85e42aSJean-Baptiste Maneyrol 8257f85e42aSJean-Baptiste Maneyrol /* skip packet if no gyro data or data is invalid */ 8267f85e42aSJean-Baptiste Maneyrol if (gyro == NULL || !inv_icm42600_fifo_is_data_valid(gyro)) 8277f85e42aSJean-Baptiste Maneyrol continue; 8287f85e42aSJean-Baptiste Maneyrol 829ec74ae9fSJean-Baptiste Maneyrol /* update odr */ 830ec74ae9fSJean-Baptiste Maneyrol if (odr & INV_ICM42600_SENSOR_GYRO) 8310ecc363cSJean-Baptiste Maneyrol inv_sensors_timestamp_apply_odr(ts, st->fifo.period, 832ec74ae9fSJean-Baptiste Maneyrol st->fifo.nb.total, no); 833ec74ae9fSJean-Baptiste Maneyrol 8347f85e42aSJean-Baptiste Maneyrol /* buffer is copied to userspace, zeroing it to avoid any data leak */ 8357f85e42aSJean-Baptiste Maneyrol memset(&buffer, 0, sizeof(buffer)); 8367f85e42aSJean-Baptiste Maneyrol memcpy(&buffer.gyro, gyro, sizeof(buffer.gyro)); 8377f85e42aSJean-Baptiste Maneyrol /* convert 8 bits FIFO temperature in high resolution format */ 8387f85e42aSJean-Baptiste Maneyrol buffer.temp = temp ? (*temp * 64) : 0; 8390ecc363cSJean-Baptiste Maneyrol ts_val = inv_sensors_timestamp_pop(ts); 840ec74ae9fSJean-Baptiste Maneyrol iio_push_to_buffers_with_timestamp(indio_dev, &buffer, ts_val); 8417f85e42aSJean-Baptiste Maneyrol } 8427f85e42aSJean-Baptiste Maneyrol 8437f85e42aSJean-Baptiste Maneyrol return 0; 8447f85e42aSJean-Baptiste Maneyrol } 845