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@cam.ac.uk>
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/gpio.h>
20 #include <linux/delay.h>
21 #include <linux/mutex.h>
22 #include <linux/device.h>
23 #include <linux/kernel.h>
24 #include <linux/spi/spi.h>
25 #include <linux/slab.h>
26 #include <linux/sysfs.h>
27 #include <linux/list.h>
31 #include "../ring_generic.h"
32 #include "../accel/accel.h"
33 #include "../adc/adc.h"
34 #include "../gyro/gyro.h"
35 #include "../magnetometer/magnet.h"
37 #include "adis16400.h"
39 #define DRIVER_NAME "adis16400"
41 enum adis16400_chip_variant {
51 static int adis16400_check_status(struct iio_dev *indio_dev);
53 /* At the moment the spi framework doesn't allow global setting of cs_change.
54 * It's in the likely to be added comment at the top of spi.h.
55 * This means that use cannot be made of spi_write etc.
59 * adis16400_spi_write_reg_8() - write single byte to a register
60 * @dev: device associated with child of actual device (iio_dev or iio_trig)
61 * @reg_address: the address of the register to be written
62 * @val: the value to write
64 static int adis16400_spi_write_reg_8(struct iio_dev *indio_dev,
69 struct adis16400_state *st = iio_priv(indio_dev);
71 mutex_lock(&st->buf_lock);
72 st->tx[0] = ADIS16400_WRITE_REG(reg_address);
75 ret = spi_write(st->us, st->tx, 2);
76 mutex_unlock(&st->buf_lock);
82 * adis16400_spi_write_reg_16() - write 2 bytes to a pair of registers
83 * @dev: device associated with child of actual device (iio_dev or iio_trig)
84 * @reg_address: the address of the lower of the two registers. Second register
85 * is assumed to have address one greater.
86 * @val: value to be written
88 static int adis16400_spi_write_reg_16(struct iio_dev *indio_dev,
93 struct spi_message msg;
94 struct adis16400_state *st = iio_priv(indio_dev);
95 struct spi_transfer xfers[] = {
102 .tx_buf = st->tx + 2,
108 mutex_lock(&st->buf_lock);
109 st->tx[0] = ADIS16400_WRITE_REG(lower_reg_address);
110 st->tx[1] = value & 0xFF;
111 st->tx[2] = ADIS16400_WRITE_REG(lower_reg_address + 1);
112 st->tx[3] = (value >> 8) & 0xFF;
114 spi_message_init(&msg);
115 spi_message_add_tail(&xfers[0], &msg);
116 spi_message_add_tail(&xfers[1], &msg);
117 ret = spi_sync(st->us, &msg);
118 mutex_unlock(&st->buf_lock);
124 * adis16400_spi_read_reg_16() - read 2 bytes from a 16-bit register
125 * @indio_dev: iio device
126 * @reg_address: the address of the lower of the two registers. Second register
127 * is assumed to have address one greater.
128 * @val: somewhere to pass back the value read
130 static int adis16400_spi_read_reg_16(struct iio_dev *indio_dev,
131 u8 lower_reg_address,
134 struct spi_message msg;
135 struct adis16400_state *st = iio_priv(indio_dev);
137 struct spi_transfer xfers[] = {
150 mutex_lock(&st->buf_lock);
151 st->tx[0] = ADIS16400_READ_REG(lower_reg_address);
156 spi_message_init(&msg);
157 spi_message_add_tail(&xfers[0], &msg);
158 spi_message_add_tail(&xfers[1], &msg);
159 ret = spi_sync(st->us, &msg);
161 dev_err(&st->us->dev,
162 "problem when reading 16 bit register 0x%02X",
166 *val = (st->rx[0] << 8) | st->rx[1];
169 mutex_unlock(&st->buf_lock);
173 static ssize_t adis16400_read_frequency(struct device *dev,
174 struct device_attribute *attr,
177 struct iio_dev *indio_dev = dev_get_drvdata(dev);
181 ret = adis16400_spi_read_reg_16(indio_dev,
186 sps = (t & ADIS16400_SMPL_PRD_TIME_BASE) ? 53 : 1638;
187 sps /= (t & ADIS16400_SMPL_PRD_DIV_MASK) + 1;
188 len = sprintf(buf, "%d SPS\n", sps);
192 static ssize_t adis16400_write_frequency(struct device *dev,
193 struct device_attribute *attr,
197 struct iio_dev *indio_dev = dev_get_drvdata(dev);
198 struct adis16400_state *st = iio_priv(indio_dev);
203 ret = strict_strtol(buf, 10, &val);
207 mutex_lock(&indio_dev->mlock);
212 t &= ADIS16400_SMPL_PRD_DIV_MASK;
213 if ((t & ADIS16400_SMPL_PRD_DIV_MASK) >= 0x0A)
214 st->us->max_speed_hz = ADIS16400_SPI_SLOW;
216 st->us->max_speed_hz = ADIS16400_SPI_FAST;
218 ret = adis16400_spi_write_reg_8(indio_dev,
222 mutex_unlock(&indio_dev->mlock);
224 return ret ? ret : len;
227 static int adis16400_reset(struct iio_dev *indio_dev)
230 ret = adis16400_spi_write_reg_8(indio_dev,
232 ADIS16400_GLOB_CMD_SW_RESET);
234 dev_err(&indio_dev->dev, "problem resetting device");
239 static ssize_t adis16400_write_reset(struct device *dev,
240 struct device_attribute *attr,
241 const char *buf, size_t len)
243 struct iio_dev *indio_dev = dev_get_drvdata(dev);
251 return adis16400_reset(indio_dev);
256 int adis16400_set_irq(struct iio_dev *indio_dev, bool enable)
260 ret = adis16400_spi_read_reg_16(indio_dev, ADIS16400_MSC_CTRL, &msc);
264 msc |= ADIS16400_MSC_CTRL_DATA_RDY_POL_HIGH;
266 msc |= ADIS16400_MSC_CTRL_DATA_RDY_EN;
268 msc &= ~ADIS16400_MSC_CTRL_DATA_RDY_EN;
270 ret = adis16400_spi_write_reg_16(indio_dev, ADIS16400_MSC_CTRL, msc);
278 /* Power down the device */
279 static int adis16400_stop_device(struct iio_dev *indio_dev)
282 u16 val = ADIS16400_SLP_CNT_POWER_OFF;
284 ret = adis16400_spi_write_reg_16(indio_dev, ADIS16400_SLP_CNT, val);
286 dev_err(&indio_dev->dev,
287 "problem with turning device off: SLP_CNT");
292 static int adis16400_self_test(struct iio_dev *indio_dev)
295 ret = adis16400_spi_write_reg_16(indio_dev,
297 ADIS16400_MSC_CTRL_MEM_TEST);
299 dev_err(&indio_dev->dev, "problem starting self test");
303 msleep(ADIS16400_MTEST_DELAY);
304 adis16400_check_status(indio_dev);
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_initial_setup(struct iio_dev *indio_dev)
362 u16 prod_id, smp_prd;
363 struct device *dev = &indio_dev->dev;
364 struct adis16400_state *st = iio_priv(indio_dev);
366 /* use low spi speed for init */
367 st->us->max_speed_hz = ADIS16400_SPI_SLOW;
368 st->us->mode = SPI_MODE_3;
372 ret = adis16400_set_irq(indio_dev, false);
374 dev_err(dev, "disable irq failed");
379 ret = adis16400_self_test(indio_dev);
381 dev_err(dev, "self test failure");
385 /* Read status register to check the result */
386 ret = adis16400_check_status(indio_dev);
388 adis16400_reset(indio_dev);
389 dev_err(dev, "device not playing ball -> reset");
390 msleep(ADIS16400_STARTUP_DELAY);
391 ret = adis16400_check_status(indio_dev);
393 dev_err(dev, "giving up");
397 if (st->variant->flags & ADIS16400_HAS_PROD_ID) {
398 ret = adis16400_spi_read_reg_16(indio_dev,
399 ADIS16400_PRODUCT_ID, &prod_id);
403 if ((prod_id & 0xF000) != st->variant->product_id)
404 dev_warn(dev, "incorrect id");
406 printk(KERN_INFO DRIVER_NAME ": prod_id 0x%04x at CS%d (irq %d)\n",
407 prod_id, st->us->chip_select, st->us->irq);
409 /* use high spi speed if possible */
410 ret = adis16400_spi_read_reg_16(indio_dev,
411 ADIS16400_SMPL_PRD, &smp_prd);
412 if (!ret && (smp_prd & ADIS16400_SMPL_PRD_DIV_MASK) < 0x0A) {
413 st->us->max_speed_hz = ADIS16400_SPI_SLOW;
423 static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
424 adis16400_read_frequency,
425 adis16400_write_frequency);
427 static IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, adis16400_write_reset, 0);
429 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("409 546 819 1638");
431 enum adis16400_chan {
447 static u8 adis16400_addresses[16][2] = {
448 [in_supply] = { ADIS16400_SUPPLY_OUT, 0 },
449 [gyro_x] = { ADIS16400_XGYRO_OUT, ADIS16400_XGYRO_OFF },
450 [gyro_y] = { ADIS16400_YGYRO_OUT, ADIS16400_YGYRO_OFF },
451 [gyro_z] = { ADIS16400_ZGYRO_OUT, ADIS16400_ZGYRO_OFF },
452 [accel_x] = { ADIS16400_XACCL_OUT, ADIS16400_XACCL_OFF },
453 [accel_y] = { ADIS16400_YACCL_OUT, ADIS16400_YACCL_OFF },
454 [accel_z] = { ADIS16400_ZACCL_OUT, ADIS16400_ZACCL_OFF },
455 [magn_x] = { ADIS16400_XMAGN_OUT, 0 },
456 [magn_y] = { ADIS16400_YMAGN_OUT, 0 },
457 [magn_z] = { ADIS16400_ZMAGN_OUT, 0 },
458 [temp] = { ADIS16400_TEMP_OUT, 0 },
459 [temp0] = { ADIS16350_XTEMP_OUT },
460 [temp1] = { ADIS16350_YTEMP_OUT },
461 [temp2] = { ADIS16350_ZTEMP_OUT },
462 [in1] = { ADIS16400_AUX_ADC , 0 },
465 static int adis16400_write_raw(struct iio_dev *indio_dev,
466 struct iio_chan_spec const *chan,
473 case (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE):
474 mutex_lock(&indio_dev->mlock);
475 ret = adis16400_spi_write_reg_16(indio_dev,
476 adis16400_addresses[chan->address][1],
478 mutex_unlock(&indio_dev->mlock);
485 static int adis16400_read_raw(struct iio_dev *indio_dev,
486 struct iio_chan_spec const *chan,
491 struct adis16400_state *st = iio_priv(indio_dev);
498 mutex_lock(&indio_dev->mlock);
499 ret = adis16400_spi_read_reg_16(indio_dev,
500 adis16400_addresses[chan->address][0],
503 mutex_unlock(&indio_dev->mlock);
506 val16 &= (1 << chan->scan_type.realbits) - 1;
507 if (chan->scan_type.sign == 's') {
508 shift = 16 - chan->scan_type.realbits;
509 val16 = (s16)(val16 << shift) >> shift;
512 mutex_unlock(&indio_dev->mlock);
514 case (1 << IIO_CHAN_INFO_SCALE_SHARED):
515 case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
516 switch (chan->type) {
519 *val2 = st->variant->gyro_scale_micro;
520 return IIO_VAL_INT_PLUS_MICRO;
523 if (chan->channel == 0)
527 return IIO_VAL_INT_PLUS_MICRO;
530 *val2 = st->variant->accel_scale_micro;
531 return IIO_VAL_INT_PLUS_MICRO;
535 return IIO_VAL_INT_PLUS_MICRO;
539 return IIO_VAL_INT_PLUS_MICRO;
543 case (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE):
544 mutex_lock(&indio_dev->mlock);
545 ret = adis16400_spi_read_reg_16(indio_dev,
546 adis16400_addresses[chan->address][1],
548 mutex_unlock(&indio_dev->mlock);
551 val16 = ((val16 & 0xFFF) << 4) >> 4;
554 case (1 << IIO_CHAN_INFO_OFFSET_SEPARATE):
555 /* currently only temperature */
558 return IIO_VAL_INT_PLUS_MICRO;
564 static struct iio_chan_spec adis16400_channels[] = {
565 IIO_CHAN(IIO_IN, 0, 1, 0, "supply", 0, 0,
566 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
567 in_supply, ADIS16400_SCAN_SUPPLY,
568 IIO_ST('u', 14, 16, 0), 0),
569 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_X,
570 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
571 (1 << IIO_CHAN_INFO_SCALE_SHARED),
572 gyro_x, ADIS16400_SCAN_GYRO_X, IIO_ST('s', 14, 16, 0), 0),
573 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Y,
574 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
575 (1 << IIO_CHAN_INFO_SCALE_SHARED),
576 gyro_y, ADIS16400_SCAN_GYRO_Y, IIO_ST('s', 14, 16, 0), 0),
577 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Z,
578 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
579 (1 << IIO_CHAN_INFO_SCALE_SHARED),
580 gyro_z, ADIS16400_SCAN_GYRO_Z, IIO_ST('s', 14, 16, 0), 0),
581 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_X,
582 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
583 (1 << IIO_CHAN_INFO_SCALE_SHARED),
584 accel_x, ADIS16400_SCAN_ACC_X, IIO_ST('s', 14, 16, 0), 0),
585 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Y,
586 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
587 (1 << IIO_CHAN_INFO_SCALE_SHARED),
588 accel_y, ADIS16400_SCAN_ACC_Y, IIO_ST('s', 14, 16, 0), 0),
589 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Z,
590 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
591 (1 << IIO_CHAN_INFO_SCALE_SHARED),
592 accel_z, ADIS16400_SCAN_ACC_Z, IIO_ST('s', 14, 16, 0), 0),
593 IIO_CHAN(IIO_MAGN, 1, 0, 0, NULL, 0, IIO_MOD_X,
594 (1 << IIO_CHAN_INFO_SCALE_SHARED),
595 magn_x, ADIS16400_SCAN_MAGN_X, IIO_ST('s', 14, 16, 0), 0),
596 IIO_CHAN(IIO_MAGN, 1, 0, 0, NULL, 0, IIO_MOD_Y,
597 (1 << IIO_CHAN_INFO_SCALE_SHARED),
598 magn_y, ADIS16400_SCAN_MAGN_Y, IIO_ST('s', 14, 16, 0), 0),
599 IIO_CHAN(IIO_MAGN, 1, 0, 0, NULL, 0, IIO_MOD_Z,
600 (1 << IIO_CHAN_INFO_SCALE_SHARED),
601 magn_z, ADIS16400_SCAN_MAGN_Z, IIO_ST('s', 14, 16, 0), 0),
602 IIO_CHAN(IIO_TEMP, 0, 1, 0, NULL, 0, 0,
603 (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
604 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
605 temp, ADIS16400_SCAN_TEMP, IIO_ST('s', 12, 16, 0), 0),
606 IIO_CHAN(IIO_IN, 0, 1, 0, NULL, 1, 0,
607 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
608 in1, ADIS16400_SCAN_ADC_0, IIO_ST('s', 12, 16, 0), 0),
609 IIO_CHAN_SOFT_TIMESTAMP(12)
612 static struct iio_chan_spec adis16350_channels[] = {
613 IIO_CHAN(IIO_IN, 0, 1, 0, "supply", 0, 0,
614 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
615 0, ADIS16400_SCAN_SUPPLY, IIO_ST('u', 12, 16, 0), 0),
616 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_X,
617 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
618 (1 << IIO_CHAN_INFO_SCALE_SHARED),
619 1, ADIS16400_SCAN_GYRO_X, IIO_ST('s', 14, 16, 0), 0),
620 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Y,
621 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
622 (1 << IIO_CHAN_INFO_SCALE_SHARED),
623 2, ADIS16400_SCAN_GYRO_Y, IIO_ST('s', 14, 16, 0), 0),
624 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Z,
625 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
626 (1 << IIO_CHAN_INFO_SCALE_SHARED),
627 3, ADIS16400_SCAN_GYRO_Z, IIO_ST('s', 14, 16, 0), 0),
628 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_X,
629 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
630 (1 << IIO_CHAN_INFO_SCALE_SHARED),
631 4, ADIS16400_SCAN_ACC_X, IIO_ST('s', 14, 16, 0), 0),
632 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Y,
633 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
634 (1 << IIO_CHAN_INFO_SCALE_SHARED),
635 0, ADIS16400_SCAN_ACC_Y, IIO_ST('s', 14, 16, 0), 0),
636 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Z,
637 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
638 (1 << IIO_CHAN_INFO_SCALE_SHARED),
639 0, ADIS16400_SCAN_ACC_Z, IIO_ST('s', 14, 16, 0), 0),
640 IIO_CHAN(IIO_TEMP, 0, 1, 0, "x", 0, 0,
641 (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
642 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
643 0, ADIS16350_SCAN_TEMP_X, IIO_ST('s', 12, 16, 0), 0),
644 IIO_CHAN(IIO_TEMP, 0, 1, 0, "y", 1, 0,
645 (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
646 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
647 0, ADIS16350_SCAN_TEMP_Y, IIO_ST('s', 12, 16, 0), 0),
648 IIO_CHAN(IIO_TEMP, 0, 1, 0, "z", 2, 0,
649 (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
650 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
651 0, ADIS16350_SCAN_TEMP_Z, IIO_ST('s', 12, 16, 0), 0),
652 IIO_CHAN(IIO_IN, 0, 1, 0, NULL, 1, 0,
653 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
654 0, ADIS16350_SCAN_ADC_0, IIO_ST('s', 12, 16, 0), 0),
655 IIO_CHAN_SOFT_TIMESTAMP(11)
658 static struct iio_chan_spec adis16300_channels[] = {
659 IIO_CHAN(IIO_IN, 0, 1, 0, "supply", 0, 0,
660 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
661 0, ADIS16400_SCAN_SUPPLY, IIO_ST('u', 12, 16, 0), 0),
662 IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_X,
663 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
664 (1 << IIO_CHAN_INFO_SCALE_SHARED),
665 1, ADIS16400_SCAN_GYRO_X, IIO_ST('s', 14, 16, 0), 0),
666 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_X,
667 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
668 (1 << IIO_CHAN_INFO_SCALE_SHARED),
669 4, ADIS16400_SCAN_ACC_X, IIO_ST('s', 14, 16, 0), 0),
670 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Y,
671 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
672 (1 << IIO_CHAN_INFO_SCALE_SHARED),
673 0, ADIS16400_SCAN_ACC_Y, IIO_ST('s', 14, 16, 0), 0),
674 IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Z,
675 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
676 (1 << IIO_CHAN_INFO_SCALE_SHARED),
677 0, ADIS16400_SCAN_ACC_Z, IIO_ST('s', 14, 16, 0), 0),
678 IIO_CHAN(IIO_TEMP, 0, 1, 0, NULL, 0, 0,
679 (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
680 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
681 0, ADIS16400_SCAN_TEMP, IIO_ST('s', 12, 16, 0), 0),
682 IIO_CHAN(IIO_IN, 0, 1, 0, NULL, 1, 0,
683 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
684 0, ADIS16350_SCAN_ADC_0, IIO_ST('s', 12, 16, 0), 0),
685 IIO_CHAN(IIO_INCLI, 1, 0, 0, NULL, 0, IIO_MOD_X,
686 (1 << IIO_CHAN_INFO_SCALE_SHARED),
687 0, ADIS16300_SCAN_INCLI_X, IIO_ST('s', 13, 16, 0), 0),
688 IIO_CHAN(IIO_INCLI, 1, 0, 0, NULL, 0, IIO_MOD_Y,
689 (1 << IIO_CHAN_INFO_SCALE_SHARED),
690 0, ADIS16300_SCAN_INCLI_Y, IIO_ST('s', 13, 16, 0), 0),
691 IIO_CHAN_SOFT_TIMESTAMP(14)
694 static struct attribute *adis16400_attributes[] = {
695 &iio_dev_attr_sampling_frequency.dev_attr.attr,
696 &iio_const_attr_sampling_frequency_available.dev_attr.attr,
697 &iio_dev_attr_reset.dev_attr.attr,
701 static const struct attribute_group adis16400_attribute_group = {
702 .attrs = adis16400_attributes,
705 static struct adis16400_chip_info adis16400_chips[] = {
707 .channels = adis16300_channels,
708 .num_channels = ARRAY_SIZE(adis16300_channels),
709 .gyro_scale_micro = 873,
710 .accel_scale_micro = 5884,
711 .default_scan_mask = (1 << ADIS16400_SCAN_SUPPLY) |
712 (1 << ADIS16400_SCAN_GYRO_X) | (1 << ADIS16400_SCAN_ACC_X) |
713 (1 << ADIS16400_SCAN_ACC_Y) | (1 << ADIS16400_SCAN_ACC_Z) |
714 (1 << ADIS16400_SCAN_TEMP) | (1 << ADIS16400_SCAN_ADC_0) |
715 (1 << ADIS16300_SCAN_INCLI_X) | (1 << ADIS16300_SCAN_INCLI_Y) |
719 .channels = adis16350_channels,
720 .num_channels = ARRAY_SIZE(adis16350_channels),
721 .gyro_scale_micro = 872664,
722 .accel_scale_micro = 24732,
723 .default_scan_mask = 0x7FF,
724 .flags = ADIS16400_NO_BURST,
727 .channels = adis16350_channels,
728 .num_channels = ARRAY_SIZE(adis16350_channels),
729 .flags = ADIS16400_HAS_PROD_ID,
730 .product_id = 0x3FE8,
731 .gyro_scale_micro = 1279,
732 .accel_scale_micro = 24732,
733 .default_scan_mask = 0x7FF,
736 .channels = adis16350_channels,
737 .num_channels = ARRAY_SIZE(adis16350_channels),
738 .flags = ADIS16400_HAS_PROD_ID,
739 .product_id = 0x3FEA,
740 .gyro_scale_micro = 1279,
741 .accel_scale_micro = 24732,
742 .default_scan_mask = 0x7FF,
745 .channels = adis16350_channels,
746 .num_channels = ARRAY_SIZE(adis16350_channels),
747 .flags = ADIS16400_HAS_PROD_ID,
748 .product_id = 0x3FEC,
749 .gyro_scale_micro = 1279,
750 .accel_scale_micro = 24732,
751 .default_scan_mask = 0x7FF,
754 .channels = adis16350_channels,
755 .num_channels = ARRAY_SIZE(adis16350_channels),
756 .flags = ADIS16400_HAS_PROD_ID,
757 .product_id = 0x3FED,
758 .gyro_scale_micro = 1279,
759 .accel_scale_micro = 24732,
760 .default_scan_mask = 0x7FF,
763 .channels = adis16400_channels,
764 .num_channels = ARRAY_SIZE(adis16400_channels),
765 .flags = ADIS16400_HAS_PROD_ID,
766 .product_id = 0x4015,
767 .gyro_scale_micro = 873,
768 .accel_scale_micro = 32656,
769 .default_scan_mask = 0xFFF,
773 static const struct iio_info adis16400_info = {
774 .driver_module = THIS_MODULE,
775 .read_raw = &adis16400_read_raw,
776 .write_raw = &adis16400_write_raw,
777 .attrs = &adis16400_attribute_group,
780 static int __devinit adis16400_probe(struct spi_device *spi)
782 int ret, regdone = 0;
783 struct adis16400_state *st;
784 struct iio_dev *indio_dev = iio_allocate_device(sizeof(*st));
785 if (indio_dev == NULL) {
789 st = iio_priv(indio_dev);
790 /* this is only used for removal purposes */
791 spi_set_drvdata(spi, indio_dev);
794 mutex_init(&st->buf_lock);
796 /* setup the industrialio driver allocated elements */
797 st->variant = &adis16400_chips[spi_get_device_id(spi)->driver_data];
798 indio_dev->dev.parent = &spi->dev;
799 indio_dev->name = spi_get_device_id(spi)->name;
800 indio_dev->channels = st->variant->channels;
801 indio_dev->num_channels = st->variant->num_channels;
802 indio_dev->info = &adis16400_info;
803 indio_dev->modes = INDIO_DIRECT_MODE;
805 ret = adis16400_configure_ring(indio_dev);
809 ret = iio_device_register(indio_dev);
811 goto error_unreg_ring_funcs;
814 ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
815 st->variant->channels,
816 st->variant->num_channels);
818 dev_err(&spi->dev, "failed to initialize the ring\n");
819 goto error_unreg_ring_funcs;
822 if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0) {
823 ret = adis16400_probe_trigger(indio_dev);
825 goto error_uninitialize_ring;
828 /* Get the device into a sane initial state */
829 ret = adis16400_initial_setup(indio_dev);
831 goto error_remove_trigger;
834 error_remove_trigger:
835 if (indio_dev->modes & INDIO_RING_TRIGGERED)
836 adis16400_remove_trigger(indio_dev);
837 error_uninitialize_ring:
838 iio_ring_buffer_unregister(indio_dev->ring);
839 error_unreg_ring_funcs:
840 adis16400_unconfigure_ring(indio_dev);
843 iio_device_unregister(indio_dev);
845 iio_free_device(indio_dev);
850 /* fixme, confirm ordering in this function */
851 static int adis16400_remove(struct spi_device *spi)
854 struct iio_dev *indio_dev = spi_get_drvdata(spi);
856 ret = adis16400_stop_device(indio_dev);
860 adis16400_remove_trigger(indio_dev);
861 iio_ring_buffer_unregister(indio_dev->ring);
862 adis16400_unconfigure_ring(indio_dev);
863 iio_device_unregister(indio_dev);
871 static const struct spi_device_id adis16400_id[] = {
872 {"adis16300", ADIS16300},
873 {"adis16350", ADIS16350},
874 {"adis16354", ADIS16350},
875 {"adis16355", ADIS16350},
876 {"adis16360", ADIS16360},
877 {"adis16362", ADIS16362},
878 {"adis16364", ADIS16364},
879 {"adis16365", ADIS16365},
880 {"adis16400", ADIS16400},
881 {"adis16405", ADIS16400},
885 static struct spi_driver adis16400_driver = {
888 .owner = THIS_MODULE,
890 .id_table = adis16400_id,
891 .probe = adis16400_probe,
892 .remove = __devexit_p(adis16400_remove),
895 static __init int adis16400_init(void)
897 return spi_register_driver(&adis16400_driver);
899 module_init(adis16400_init);
901 static __exit void adis16400_exit(void)
903 spi_unregister_driver(&adis16400_driver);
905 module_exit(adis16400_exit);
907 MODULE_AUTHOR("Manuel Stahl <manuel.stahl@iis.fraunhofer.de>");
908 MODULE_DESCRIPTION("Analog Devices ADIS16400/5 IMU SPI driver");
909 MODULE_LICENSE("GPL v2");