2 * adis16400.c support Analog Devices ADIS16400/5
3 * 3d 2g Linear Accelerometers,
5 * 3d Magnetometers via SPI
7 * Copyright (c) 2009 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
8 * Copyright (c) 2007 Jonathan Cameron <jic23@kernel.org>
9 * Copyright (c) 2011 Analog Devices Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
17 #include <linux/interrupt.h>
18 #include <linux/irq.h>
19 #include <linux/delay.h>
20 #include <linux/mutex.h>
21 #include <linux/device.h>
22 #include <linux/kernel.h>
23 #include <linux/spi/spi.h>
24 #include <linux/slab.h>
25 #include <linux/sysfs.h>
26 #include <linux/list.h>
27 #include <linux/module.h>
29 #include <linux/iio/iio.h>
30 #include <linux/iio/sysfs.h>
31 #include <linux/iio/buffer.h>
32 #include "adis16400.h"
34 enum adis16400_chip_variant {
46 * adis16400_spi_write_reg_8() - write single byte to a register
47 * @dev: device associated with child of actual device (iio_dev or iio_trig)
48 * @reg_address: the address of the register to be written
49 * @val: the value to write
51 static int adis16400_spi_write_reg_8(struct iio_dev *indio_dev,
56 struct adis16400_state *st = iio_priv(indio_dev);
58 mutex_lock(&st->buf_lock);
59 st->tx[0] = ADIS16400_WRITE_REG(reg_address);
62 ret = spi_write(st->us, st->tx, 2);
63 mutex_unlock(&st->buf_lock);
69 * adis16400_spi_write_reg_16() - write 2 bytes to a pair of registers
70 * @dev: device associated with child of actual device (iio_dev or iio_trig)
71 * @reg_address: the address of the lower of the two registers. Second register
72 * is assumed to have address one greater.
73 * @val: value to be written
75 * At the moment the spi framework doesn't allow global setting of cs_change.
76 * This means that use cannot be made of spi_write.
78 static int adis16400_spi_write_reg_16(struct iio_dev *indio_dev,
83 struct spi_message msg;
84 struct adis16400_state *st = iio_priv(indio_dev);
85 struct spi_transfer xfers[] = {
98 mutex_lock(&st->buf_lock);
99 st->tx[0] = ADIS16400_WRITE_REG(lower_reg_address);
100 st->tx[1] = value & 0xFF;
101 st->tx[2] = ADIS16400_WRITE_REG(lower_reg_address + 1);
102 st->tx[3] = (value >> 8) & 0xFF;
104 spi_message_init(&msg);
105 spi_message_add_tail(&xfers[0], &msg);
106 spi_message_add_tail(&xfers[1], &msg);
107 ret = spi_sync(st->us, &msg);
108 mutex_unlock(&st->buf_lock);
114 * adis16400_spi_read_reg_16() - read 2 bytes from a 16-bit register
115 * @indio_dev: iio device
116 * @reg_address: the address of the lower of the two registers. Second register
117 * is assumed to have address one greater.
118 * @val: somewhere to pass back the value read
120 * At the moment the spi framework doesn't allow global setting of cs_change.
121 * This means that use cannot be made of spi_read.
123 static int adis16400_spi_read_reg_16(struct iio_dev *indio_dev,
124 u8 lower_reg_address,
127 struct spi_message msg;
128 struct adis16400_state *st = iio_priv(indio_dev);
130 struct spi_transfer xfers[] = {
143 mutex_lock(&st->buf_lock);
144 st->tx[0] = ADIS16400_READ_REG(lower_reg_address);
147 spi_message_init(&msg);
148 spi_message_add_tail(&xfers[0], &msg);
149 spi_message_add_tail(&xfers[1], &msg);
150 ret = spi_sync(st->us, &msg);
152 dev_err(&st->us->dev,
153 "problem when reading 16 bit register 0x%02X",
157 *val = (st->rx[0] << 8) | st->rx[1];
160 mutex_unlock(&st->buf_lock);
164 static int adis16400_get_freq(struct iio_dev *indio_dev)
169 ret = adis16400_spi_read_reg_16(indio_dev, ADIS16400_SMPL_PRD, &t);
172 sps = (t & ADIS16400_SMPL_PRD_TIME_BASE) ? 53 : 1638;
173 sps /= (t & ADIS16400_SMPL_PRD_DIV_MASK) + 1;
178 static ssize_t adis16400_read_frequency(struct device *dev,
179 struct device_attribute *attr,
182 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
184 ret = adis16400_get_freq(indio_dev);
187 len = sprintf(buf, "%d SPS\n", ret);
191 static const unsigned adis16400_3db_divisors[] = {
192 [0] = 2, /* Special case */
199 static int adis16400_set_filter(struct iio_dev *indio_dev, int sps, int val)
203 for (i = ARRAY_SIZE(adis16400_3db_divisors) - 1; i >= 0; i--)
204 if (sps/adis16400_3db_divisors[i] > val)
209 ret = adis16400_spi_read_reg_16(indio_dev,
215 ret = adis16400_spi_write_reg_16(indio_dev,
217 (val16 & ~0x03) | i);
223 static ssize_t adis16400_write_frequency(struct device *dev,
224 struct device_attribute *attr,
228 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
229 struct adis16400_state *st = iio_priv(indio_dev);
234 ret = strict_strtol(buf, 10, &val);
240 mutex_lock(&indio_dev->mlock);
245 t &= ADIS16400_SMPL_PRD_DIV_MASK;
246 if ((t & ADIS16400_SMPL_PRD_DIV_MASK) >= 0x0A)
247 st->us->max_speed_hz = ADIS16400_SPI_SLOW;
249 st->us->max_speed_hz = ADIS16400_SPI_FAST;
251 ret = adis16400_spi_write_reg_8(indio_dev,
255 /* Also update the filter */
256 mutex_unlock(&indio_dev->mlock);
258 return ret ? ret : len;
261 static int adis16400_reset(struct iio_dev *indio_dev)
264 ret = adis16400_spi_write_reg_8(indio_dev,
266 ADIS16400_GLOB_CMD_SW_RESET);
268 dev_err(&indio_dev->dev, "problem resetting device");
273 int adis16400_set_irq(struct iio_dev *indio_dev, bool enable)
278 ret = adis16400_spi_read_reg_16(indio_dev, ADIS16400_MSC_CTRL, &msc);
282 msc |= ADIS16400_MSC_CTRL_DATA_RDY_POL_HIGH;
284 msc |= ADIS16400_MSC_CTRL_DATA_RDY_EN;
286 msc &= ~ADIS16400_MSC_CTRL_DATA_RDY_EN;
288 ret = adis16400_spi_write_reg_16(indio_dev, ADIS16400_MSC_CTRL, msc);
296 /* Power down the device */
297 static int adis16400_stop_device(struct iio_dev *indio_dev)
300 u16 val = ADIS16400_SLP_CNT_POWER_OFF;
302 ret = adis16400_spi_write_reg_16(indio_dev, ADIS16400_SLP_CNT, val);
304 dev_err(&indio_dev->dev,
305 "problem with turning device off: SLP_CNT");
310 static int adis16400_check_status(struct iio_dev *indio_dev)
314 struct device *dev = &indio_dev->dev;
316 ret = adis16400_spi_read_reg_16(indio_dev,
317 ADIS16400_DIAG_STAT, &status);
320 dev_err(dev, "Reading status failed\n");
324 if (status & ADIS16400_DIAG_STAT_ZACCL_FAIL)
325 dev_err(dev, "Z-axis accelerometer self-test failure\n");
326 if (status & ADIS16400_DIAG_STAT_YACCL_FAIL)
327 dev_err(dev, "Y-axis accelerometer self-test failure\n");
328 if (status & ADIS16400_DIAG_STAT_XACCL_FAIL)
329 dev_err(dev, "X-axis accelerometer self-test failure\n");
330 if (status & ADIS16400_DIAG_STAT_XGYRO_FAIL)
331 dev_err(dev, "X-axis gyroscope self-test failure\n");
332 if (status & ADIS16400_DIAG_STAT_YGYRO_FAIL)
333 dev_err(dev, "Y-axis gyroscope self-test failure\n");
334 if (status & ADIS16400_DIAG_STAT_ZGYRO_FAIL)
335 dev_err(dev, "Z-axis gyroscope self-test failure\n");
336 if (status & ADIS16400_DIAG_STAT_ALARM2)
337 dev_err(dev, "Alarm 2 active\n");
338 if (status & ADIS16400_DIAG_STAT_ALARM1)
339 dev_err(dev, "Alarm 1 active\n");
340 if (status & ADIS16400_DIAG_STAT_FLASH_CHK)
341 dev_err(dev, "Flash checksum error\n");
342 if (status & ADIS16400_DIAG_STAT_SELF_TEST)
343 dev_err(dev, "Self test error\n");
344 if (status & ADIS16400_DIAG_STAT_OVERFLOW)
345 dev_err(dev, "Sensor overrange\n");
346 if (status & ADIS16400_DIAG_STAT_SPI_FAIL)
347 dev_err(dev, "SPI failure\n");
348 if (status & ADIS16400_DIAG_STAT_FLASH_UPT)
349 dev_err(dev, "Flash update failed\n");
350 if (status & ADIS16400_DIAG_STAT_POWER_HIGH)
351 dev_err(dev, "Power supply above 5.25V\n");
352 if (status & ADIS16400_DIAG_STAT_POWER_LOW)
353 dev_err(dev, "Power supply below 4.75V\n");
359 static int adis16400_self_test(struct iio_dev *indio_dev)
362 ret = adis16400_spi_write_reg_16(indio_dev,
364 ADIS16400_MSC_CTRL_MEM_TEST);
366 dev_err(&indio_dev->dev, "problem starting self test");
370 msleep(ADIS16400_MTEST_DELAY);
371 adis16400_check_status(indio_dev);
377 static int adis16400_initial_setup(struct iio_dev *indio_dev)
380 u16 prod_id, smp_prd;
381 struct adis16400_state *st = iio_priv(indio_dev);
383 /* use low spi speed for init */
384 st->us->max_speed_hz = ADIS16400_SPI_SLOW;
385 st->us->mode = SPI_MODE_3;
388 ret = adis16400_set_irq(indio_dev, false);
390 dev_err(&indio_dev->dev, "disable irq failed");
394 ret = adis16400_self_test(indio_dev);
396 dev_err(&indio_dev->dev, "self test failure");
400 ret = adis16400_check_status(indio_dev);
402 adis16400_reset(indio_dev);
403 dev_err(&indio_dev->dev, "device not playing ball -> reset");
404 msleep(ADIS16400_STARTUP_DELAY);
405 ret = adis16400_check_status(indio_dev);
407 dev_err(&indio_dev->dev, "giving up");
411 if (st->variant->flags & ADIS16400_HAS_PROD_ID) {
412 ret = adis16400_spi_read_reg_16(indio_dev,
413 ADIS16400_PRODUCT_ID, &prod_id);
417 if ((prod_id & 0xF000) != st->variant->product_id)
418 dev_warn(&indio_dev->dev, "incorrect id");
420 dev_info(&indio_dev->dev, "%s: prod_id 0x%04x at CS%d (irq %d)\n",
421 indio_dev->name, prod_id,
422 st->us->chip_select, st->us->irq);
424 /* use high spi speed if possible */
425 ret = adis16400_spi_read_reg_16(indio_dev,
426 ADIS16400_SMPL_PRD, &smp_prd);
427 if (!ret && (smp_prd & ADIS16400_SMPL_PRD_DIV_MASK) < 0x0A) {
428 st->us->max_speed_hz = ADIS16400_SPI_SLOW;
436 static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
437 adis16400_read_frequency,
438 adis16400_write_frequency);
440 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("409 546 819 1638");
442 enum adis16400_chan {
461 static u8 adis16400_addresses[18][2] = {
462 [in_supply] = { ADIS16400_SUPPLY_OUT },
463 [gyro_x] = { ADIS16400_XGYRO_OUT, ADIS16400_XGYRO_OFF },
464 [gyro_y] = { ADIS16400_YGYRO_OUT, ADIS16400_YGYRO_OFF },
465 [gyro_z] = { ADIS16400_ZGYRO_OUT, ADIS16400_ZGYRO_OFF },
466 [accel_x] = { ADIS16400_XACCL_OUT, ADIS16400_XACCL_OFF },
467 [accel_y] = { ADIS16400_YACCL_OUT, ADIS16400_YACCL_OFF },
468 [accel_z] = { ADIS16400_ZACCL_OUT, ADIS16400_ZACCL_OFF },
469 [magn_x] = { ADIS16400_XMAGN_OUT },
470 [magn_y] = { ADIS16400_YMAGN_OUT },
471 [magn_z] = { ADIS16400_ZMAGN_OUT },
472 [temp] = { ADIS16400_TEMP_OUT },
473 [temp0] = { ADIS16350_XTEMP_OUT },
474 [temp1] = { ADIS16350_YTEMP_OUT },
475 [temp2] = { ADIS16350_ZTEMP_OUT },
476 [in1] = { ADIS16300_AUX_ADC },
477 [in2] = { ADIS16400_AUX_ADC },
478 [incli_x] = { ADIS16300_PITCH_OUT },
479 [incli_y] = { ADIS16300_ROLL_OUT }
483 static int adis16400_write_raw(struct iio_dev *indio_dev,
484 struct iio_chan_spec const *chan,
489 struct adis16400_state *st = iio_priv(indio_dev);
493 case IIO_CHAN_INFO_CALIBBIAS:
494 mutex_lock(&indio_dev->mlock);
495 ret = adis16400_spi_write_reg_16(indio_dev,
496 adis16400_addresses[chan->address][1],
498 mutex_unlock(&indio_dev->mlock);
500 case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
501 /* Need to cache values so we can update if the frequency
503 mutex_lock(&indio_dev->mlock);
505 /* Work out update to current value */
506 sps = adis16400_get_freq(indio_dev);
508 mutex_unlock(&indio_dev->mlock);
512 ret = adis16400_set_filter(indio_dev, sps, val);
513 mutex_unlock(&indio_dev->mlock);
520 static int adis16400_read_raw(struct iio_dev *indio_dev,
521 struct iio_chan_spec const *chan,
526 struct adis16400_state *st = iio_priv(indio_dev);
531 case IIO_CHAN_INFO_RAW:
532 mutex_lock(&indio_dev->mlock);
533 ret = adis16400_spi_read_reg_16(indio_dev,
534 adis16400_addresses[chan->address][0],
537 mutex_unlock(&indio_dev->mlock);
540 val16 &= (1 << chan->scan_type.realbits) - 1;
541 if (chan->scan_type.sign == 's') {
542 shift = 16 - chan->scan_type.realbits;
543 val16 = (s16)(val16 << shift) >> shift;
546 mutex_unlock(&indio_dev->mlock);
548 case IIO_CHAN_INFO_SCALE:
549 switch (chan->type) {
552 *val2 = st->variant->gyro_scale_micro;
553 return IIO_VAL_INT_PLUS_MICRO;
556 if (chan->channel == 0)
560 return IIO_VAL_INT_PLUS_MICRO;
563 *val2 = st->variant->accel_scale_micro;
564 return IIO_VAL_INT_PLUS_MICRO;
568 return IIO_VAL_INT_PLUS_MICRO;
572 return IIO_VAL_INT_PLUS_MICRO;
576 case IIO_CHAN_INFO_CALIBBIAS:
577 mutex_lock(&indio_dev->mlock);
578 ret = adis16400_spi_read_reg_16(indio_dev,
579 adis16400_addresses[chan->address][1],
581 mutex_unlock(&indio_dev->mlock);
584 val16 = ((val16 & 0xFFF) << 4) >> 4;
587 case IIO_CHAN_INFO_OFFSET:
588 /* currently only temperature */
591 return IIO_VAL_INT_PLUS_MICRO;
592 case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
593 mutex_lock(&indio_dev->mlock);
594 /* Need both the number of taps and the sampling frequency */
595 ret = adis16400_spi_read_reg_16(indio_dev,
599 mutex_unlock(&indio_dev->mlock);
602 ret = adis16400_get_freq(indio_dev);
604 *val = ret/adis16400_3db_divisors[val16 & 0x03];
606 mutex_unlock(&indio_dev->mlock);
609 return IIO_VAL_INT_PLUS_MICRO;
615 static const struct iio_chan_spec adis16400_channels[] = {
620 .extend_name = "supply",
621 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
622 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
623 .address = in_supply,
624 .scan_index = ADIS16400_SCAN_SUPPLY,
625 .scan_type = IIO_ST('u', 14, 16, 0)
627 .type = IIO_ANGL_VEL,
629 .channel2 = IIO_MOD_X,
630 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
631 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
632 IIO_CHAN_INFO_SCALE_SHARED_BIT |
633 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
635 .scan_index = ADIS16400_SCAN_GYRO_X,
636 .scan_type = IIO_ST('s', 14, 16, 0)
638 .type = IIO_ANGL_VEL,
640 .channel2 = IIO_MOD_Y,
641 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
642 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
643 IIO_CHAN_INFO_SCALE_SHARED_BIT |
644 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
646 .scan_index = ADIS16400_SCAN_GYRO_Y,
647 .scan_type = IIO_ST('s', 14, 16, 0),
649 .type = IIO_ANGL_VEL,
651 .channel2 = IIO_MOD_Z,
652 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
653 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
654 IIO_CHAN_INFO_SCALE_SHARED_BIT |
655 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
657 .scan_index = ADIS16400_SCAN_GYRO_Z,
658 .scan_type = IIO_ST('s', 14, 16, 0),
662 .channel2 = IIO_MOD_X,
663 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
664 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
665 IIO_CHAN_INFO_SCALE_SHARED_BIT |
666 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
668 .scan_index = ADIS16400_SCAN_ACC_X,
669 .scan_type = IIO_ST('s', 14, 16, 0),
673 .channel2 = IIO_MOD_Y,
674 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
675 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
676 IIO_CHAN_INFO_SCALE_SHARED_BIT |
677 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
679 .scan_index = ADIS16400_SCAN_ACC_Y,
680 .scan_type = IIO_ST('s', 14, 16, 0),
684 .channel2 = IIO_MOD_Z,
685 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
686 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
687 IIO_CHAN_INFO_SCALE_SHARED_BIT |
688 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
690 .scan_index = ADIS16400_SCAN_ACC_Z,
691 .scan_type = IIO_ST('s', 14, 16, 0),
695 .channel2 = IIO_MOD_X,
696 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
697 IIO_CHAN_INFO_SCALE_SHARED_BIT |
698 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
700 .scan_index = ADIS16400_SCAN_MAGN_X,
701 .scan_type = IIO_ST('s', 14, 16, 0),
705 .channel2 = IIO_MOD_Y,
706 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
707 IIO_CHAN_INFO_SCALE_SHARED_BIT |
708 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
710 .scan_index = ADIS16400_SCAN_MAGN_Y,
711 .scan_type = IIO_ST('s', 14, 16, 0),
715 .channel2 = IIO_MOD_Z,
716 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
717 IIO_CHAN_INFO_SCALE_SHARED_BIT |
718 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
720 .scan_index = ADIS16400_SCAN_MAGN_Z,
721 .scan_type = IIO_ST('s', 14, 16, 0),
726 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
727 IIO_CHAN_INFO_OFFSET_SEPARATE_BIT |
728 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
730 .scan_index = ADIS16400_SCAN_TEMP,
731 .scan_type = IIO_ST('s', 12, 16, 0),
736 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
737 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
739 .scan_index = ADIS16400_SCAN_ADC_0,
740 .scan_type = IIO_ST('s', 12, 16, 0),
742 IIO_CHAN_SOFT_TIMESTAMP(12)
745 static const struct iio_chan_spec adis16350_channels[] = {
750 .extend_name = "supply",
751 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
752 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
753 .address = in_supply,
754 .scan_index = ADIS16400_SCAN_SUPPLY,
755 .scan_type = IIO_ST('u', 12, 16, 0)
757 .type = IIO_ANGL_VEL,
759 .channel2 = IIO_MOD_X,
760 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
761 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
762 IIO_CHAN_INFO_SCALE_SHARED_BIT |
763 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
765 .scan_index = ADIS16400_SCAN_GYRO_X,
766 .scan_type = IIO_ST('s', 14, 16, 0)
768 .type = IIO_ANGL_VEL,
770 .channel2 = IIO_MOD_Y,
771 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
772 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
773 IIO_CHAN_INFO_SCALE_SHARED_BIT |
774 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
776 .scan_index = ADIS16400_SCAN_GYRO_Y,
777 .scan_type = IIO_ST('s', 14, 16, 0),
779 .type = IIO_ANGL_VEL,
781 .channel2 = IIO_MOD_Z,
782 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
783 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
784 IIO_CHAN_INFO_SCALE_SHARED_BIT |
785 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
787 .scan_index = ADIS16400_SCAN_GYRO_Z,
788 .scan_type = IIO_ST('s', 14, 16, 0),
792 .channel2 = IIO_MOD_X,
793 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
794 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
795 IIO_CHAN_INFO_SCALE_SHARED_BIT |
796 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
798 .scan_index = ADIS16400_SCAN_ACC_X,
799 .scan_type = IIO_ST('s', 14, 16, 0),
803 .channel2 = IIO_MOD_Y,
804 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
805 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
806 IIO_CHAN_INFO_SCALE_SHARED_BIT |
807 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
809 .scan_index = ADIS16400_SCAN_ACC_Y,
810 .scan_type = IIO_ST('s', 14, 16, 0),
814 .channel2 = IIO_MOD_Z,
815 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
816 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
817 IIO_CHAN_INFO_SCALE_SHARED_BIT |
818 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
820 .scan_index = ADIS16400_SCAN_ACC_Z,
821 .scan_type = IIO_ST('s', 14, 16, 0),
827 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
828 IIO_CHAN_INFO_OFFSET_SEPARATE_BIT |
829 IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
830 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
832 .scan_index = ADIS16350_SCAN_TEMP_X,
833 .scan_type = IIO_ST('s', 12, 16, 0),
839 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
840 IIO_CHAN_INFO_OFFSET_SEPARATE_BIT |
841 IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
842 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
844 .scan_index = ADIS16350_SCAN_TEMP_Y,
845 .scan_type = IIO_ST('s', 12, 16, 0),
851 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
852 IIO_CHAN_INFO_OFFSET_SEPARATE_BIT |
853 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
855 .scan_index = ADIS16350_SCAN_TEMP_Z,
856 .scan_type = IIO_ST('s', 12, 16, 0),
861 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
862 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
864 .scan_index = ADIS16350_SCAN_ADC_0,
865 .scan_type = IIO_ST('s', 12, 16, 0),
867 IIO_CHAN_SOFT_TIMESTAMP(11)
870 static const struct iio_chan_spec adis16300_channels[] = {
875 .extend_name = "supply",
876 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
877 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
878 .address = in_supply,
879 .scan_index = ADIS16400_SCAN_SUPPLY,
880 .scan_type = IIO_ST('u', 12, 16, 0)
882 .type = IIO_ANGL_VEL,
884 .channel2 = IIO_MOD_X,
885 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
886 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
887 IIO_CHAN_INFO_SCALE_SHARED_BIT |
888 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
890 .scan_index = ADIS16400_SCAN_GYRO_X,
891 .scan_type = IIO_ST('s', 14, 16, 0),
895 .channel2 = IIO_MOD_X,
896 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
897 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
898 IIO_CHAN_INFO_SCALE_SHARED_BIT |
899 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
901 .scan_index = ADIS16400_SCAN_ACC_X,
902 .scan_type = IIO_ST('s', 14, 16, 0),
906 .channel2 = IIO_MOD_Y,
907 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
908 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
909 IIO_CHAN_INFO_SCALE_SHARED_BIT |
910 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
912 .scan_index = ADIS16400_SCAN_ACC_Y,
913 .scan_type = IIO_ST('s', 14, 16, 0),
917 .channel2 = IIO_MOD_Z,
918 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
919 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
920 IIO_CHAN_INFO_SCALE_SHARED_BIT |
921 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
923 .scan_index = ADIS16400_SCAN_ACC_Z,
924 .scan_type = IIO_ST('s', 14, 16, 0),
929 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
930 IIO_CHAN_INFO_OFFSET_SEPARATE_BIT |
931 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
933 .scan_index = ADIS16400_SCAN_TEMP,
934 .scan_type = IIO_ST('s', 12, 16, 0),
939 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
940 IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
942 .scan_index = ADIS16350_SCAN_ADC_0,
943 .scan_type = IIO_ST('s', 12, 16, 0),
947 .channel2 = IIO_MOD_X,
948 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
949 IIO_CHAN_INFO_SCALE_SHARED_BIT,
951 .scan_index = ADIS16300_SCAN_INCLI_X,
952 .scan_type = IIO_ST('s', 13, 16, 0),
956 .channel2 = IIO_MOD_Y,
957 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
958 IIO_CHAN_INFO_SCALE_SHARED_BIT,
960 .scan_index = ADIS16300_SCAN_INCLI_Y,
961 .scan_type = IIO_ST('s', 13, 16, 0),
963 IIO_CHAN_SOFT_TIMESTAMP(14)
966 static const struct iio_chan_spec adis16334_channels[] = {
968 .type = IIO_ANGL_VEL,
970 .channel2 = IIO_MOD_X,
971 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
972 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
973 IIO_CHAN_INFO_SCALE_SHARED_BIT |
974 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
976 .scan_index = ADIS16400_SCAN_GYRO_X,
977 .scan_type = IIO_ST('s', 14, 16, 0),
979 .type = IIO_ANGL_VEL,
981 .channel2 = IIO_MOD_Y,
982 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
983 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
984 IIO_CHAN_INFO_SCALE_SHARED_BIT |
985 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
987 .scan_index = ADIS16400_SCAN_GYRO_Y,
988 .scan_type = IIO_ST('s', 14, 16, 0),
990 .type = IIO_ANGL_VEL,
992 .channel2 = IIO_MOD_Z,
993 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
994 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
995 IIO_CHAN_INFO_SCALE_SHARED_BIT |
996 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
998 .scan_index = ADIS16400_SCAN_GYRO_Z,
999 .scan_type = IIO_ST('s', 14, 16, 0),
1003 .channel2 = IIO_MOD_X,
1004 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
1005 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
1006 IIO_CHAN_INFO_SCALE_SHARED_BIT |
1007 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
1009 .scan_index = ADIS16400_SCAN_ACC_X,
1010 .scan_type = IIO_ST('s', 14, 16, 0),
1014 .channel2 = IIO_MOD_Y,
1015 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
1016 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
1017 IIO_CHAN_INFO_SCALE_SHARED_BIT |
1018 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
1020 .scan_index = ADIS16400_SCAN_ACC_Y,
1021 .scan_type = IIO_ST('s', 14, 16, 0),
1025 .channel2 = IIO_MOD_Z,
1026 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
1027 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
1028 IIO_CHAN_INFO_SCALE_SHARED_BIT |
1029 IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT,
1031 .scan_index = ADIS16400_SCAN_ACC_Z,
1032 .scan_type = IIO_ST('s', 14, 16, 0),
1037 .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
1038 IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
1039 IIO_CHAN_INFO_SCALE_SHARED_BIT,
1041 .scan_index = ADIS16400_SCAN_TEMP,
1042 .scan_type = IIO_ST('s', 14, 16, 0),
1044 IIO_CHAN_SOFT_TIMESTAMP(12)
1047 static struct attribute *adis16400_attributes[] = {
1048 &iio_dev_attr_sampling_frequency.dev_attr.attr,
1049 &iio_const_attr_sampling_frequency_available.dev_attr.attr,
1053 static const struct attribute_group adis16400_attribute_group = {
1054 .attrs = adis16400_attributes,
1057 static struct adis16400_chip_info adis16400_chips[] = {
1059 .channels = adis16300_channels,
1060 .num_channels = ARRAY_SIZE(adis16300_channels),
1061 .gyro_scale_micro = 873,
1062 .accel_scale_micro = 5884,
1063 .default_scan_mask = (1 << ADIS16400_SCAN_SUPPLY) |
1064 (1 << ADIS16400_SCAN_GYRO_X) | (1 << ADIS16400_SCAN_ACC_X) |
1065 (1 << ADIS16400_SCAN_ACC_Y) | (1 << ADIS16400_SCAN_ACC_Z) |
1066 (1 << ADIS16400_SCAN_TEMP) | (1 << ADIS16400_SCAN_ADC_0) |
1067 (1 << ADIS16300_SCAN_INCLI_X) | (1 << ADIS16300_SCAN_INCLI_Y) |
1071 .channels = adis16334_channels,
1072 .num_channels = ARRAY_SIZE(adis16334_channels),
1073 .gyro_scale_micro = 873,
1074 .accel_scale_micro = 981,
1075 .default_scan_mask = (1 << ADIS16400_SCAN_GYRO_X) |
1076 (1 << ADIS16400_SCAN_GYRO_Y) | (1 << ADIS16400_SCAN_GYRO_Z) |
1077 (1 << ADIS16400_SCAN_ACC_X) | (1 << ADIS16400_SCAN_ACC_Y) |
1078 (1 << ADIS16400_SCAN_ACC_Z),
1081 .channels = adis16350_channels,
1082 .num_channels = ARRAY_SIZE(adis16350_channels),
1083 .gyro_scale_micro = 872664,
1084 .accel_scale_micro = 24732,
1085 .default_scan_mask = 0x7FF,
1086 .flags = ADIS16400_NO_BURST,
1089 .channels = adis16350_channels,
1090 .num_channels = ARRAY_SIZE(adis16350_channels),
1091 .flags = ADIS16400_HAS_PROD_ID,
1092 .product_id = 0x3FE8,
1093 .gyro_scale_micro = 1279,
1094 .accel_scale_micro = 24732,
1095 .default_scan_mask = 0x7FF,
1098 .channels = adis16350_channels,
1099 .num_channels = ARRAY_SIZE(adis16350_channels),
1100 .flags = ADIS16400_HAS_PROD_ID,
1101 .product_id = 0x3FEA,
1102 .gyro_scale_micro = 1279,
1103 .accel_scale_micro = 24732,
1104 .default_scan_mask = 0x7FF,
1107 .channels = adis16350_channels,
1108 .num_channels = ARRAY_SIZE(adis16350_channels),
1109 .flags = ADIS16400_HAS_PROD_ID,
1110 .product_id = 0x3FEC,
1111 .gyro_scale_micro = 1279,
1112 .accel_scale_micro = 24732,
1113 .default_scan_mask = 0x7FF,
1116 .channels = adis16350_channels,
1117 .num_channels = ARRAY_SIZE(adis16350_channels),
1118 .flags = ADIS16400_HAS_PROD_ID,
1119 .product_id = 0x3FED,
1120 .gyro_scale_micro = 1279,
1121 .accel_scale_micro = 24732,
1122 .default_scan_mask = 0x7FF,
1125 .channels = adis16400_channels,
1126 .num_channels = ARRAY_SIZE(adis16400_channels),
1127 .flags = ADIS16400_HAS_PROD_ID,
1128 .product_id = 0x4015,
1129 .gyro_scale_micro = 873,
1130 .accel_scale_micro = 32656,
1131 .default_scan_mask = 0xFFF,
1135 static const struct iio_info adis16400_info = {
1136 .driver_module = THIS_MODULE,
1137 .read_raw = &adis16400_read_raw,
1138 .write_raw = &adis16400_write_raw,
1139 .attrs = &adis16400_attribute_group,
1142 static int __devinit adis16400_probe(struct spi_device *spi)
1145 struct adis16400_state *st;
1146 struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st));
1147 if (indio_dev == NULL) {
1151 st = iio_priv(indio_dev);
1152 /* this is only used for removal purposes */
1153 spi_set_drvdata(spi, indio_dev);
1156 mutex_init(&st->buf_lock);
1158 /* setup the industrialio driver allocated elements */
1159 st->variant = &adis16400_chips[spi_get_device_id(spi)->driver_data];
1160 indio_dev->dev.parent = &spi->dev;
1161 indio_dev->name = spi_get_device_id(spi)->name;
1162 indio_dev->channels = st->variant->channels;
1163 indio_dev->num_channels = st->variant->num_channels;
1164 indio_dev->info = &adis16400_info;
1165 indio_dev->modes = INDIO_DIRECT_MODE;
1167 ret = adis16400_configure_ring(indio_dev);
1169 goto error_free_dev;
1171 ret = iio_buffer_register(indio_dev,
1172 st->variant->channels,
1173 st->variant->num_channels);
1175 dev_err(&spi->dev, "failed to initialize the ring\n");
1176 goto error_unreg_ring_funcs;
1180 ret = adis16400_probe_trigger(indio_dev);
1182 goto error_uninitialize_ring;
1185 /* Get the device into a sane initial state */
1186 ret = adis16400_initial_setup(indio_dev);
1188 goto error_remove_trigger;
1189 ret = iio_device_register(indio_dev);
1191 goto error_remove_trigger;
1195 error_remove_trigger:
1197 adis16400_remove_trigger(indio_dev);
1198 error_uninitialize_ring:
1199 iio_buffer_unregister(indio_dev);
1200 error_unreg_ring_funcs:
1201 adis16400_unconfigure_ring(indio_dev);
1203 iio_device_free(indio_dev);
1208 /* fixme, confirm ordering in this function */
1209 static int __devexit adis16400_remove(struct spi_device *spi)
1211 struct iio_dev *indio_dev = spi_get_drvdata(spi);
1213 iio_device_unregister(indio_dev);
1214 adis16400_stop_device(indio_dev);
1216 adis16400_remove_trigger(indio_dev);
1217 iio_buffer_unregister(indio_dev);
1218 adis16400_unconfigure_ring(indio_dev);
1219 iio_device_free(indio_dev);
1224 static const struct spi_device_id adis16400_id[] = {
1225 {"adis16300", ADIS16300},
1226 {"adis16334", ADIS16334},
1227 {"adis16350", ADIS16350},
1228 {"adis16354", ADIS16350},
1229 {"adis16355", ADIS16350},
1230 {"adis16360", ADIS16360},
1231 {"adis16362", ADIS16362},
1232 {"adis16364", ADIS16364},
1233 {"adis16365", ADIS16365},
1234 {"adis16400", ADIS16400},
1235 {"adis16405", ADIS16400},
1238 MODULE_DEVICE_TABLE(spi, adis16400_id);
1240 static struct spi_driver adis16400_driver = {
1242 .name = "adis16400",
1243 .owner = THIS_MODULE,
1245 .id_table = adis16400_id,
1246 .probe = adis16400_probe,
1247 .remove = __devexit_p(adis16400_remove),
1249 module_spi_driver(adis16400_driver);
1251 MODULE_AUTHOR("Manuel Stahl <manuel.stahl@iis.fraunhofer.de>");
1252 MODULE_DESCRIPTION("Analog Devices ADIS16400/5 IMU SPI driver");
1253 MODULE_LICENSE("GPL v2");