2 * ADIS16209 Programmable Digital Vibration Sensor driver
4 * Copyright 2010 Analog Devices Inc.
6 * Licensed under the GPL-2 or later.
9 #include <linux/delay.h>
10 #include <linux/mutex.h>
11 #include <linux/device.h>
12 #include <linux/kernel.h>
13 #include <linux/spi/spi.h>
14 #include <linux/slab.h>
15 #include <linux/sysfs.h>
16 #include <linux/list.h>
17 #include <linux/module.h>
19 #include <linux/iio/iio.h>
20 #include <linux/iio/sysfs.h>
21 #include <linux/iio/buffer.h>
22 #include <linux/iio/imu/adis.h>
24 #include "adis16209.h"
26 static const u8 adis16209_addresses[8][1] = {
27 [ADIS16209_SCAN_SUPPLY] = { },
28 [ADIS16209_SCAN_AUX_ADC] = { },
29 [ADIS16209_SCAN_ACC_X] = { ADIS16209_XACCL_NULL },
30 [ADIS16209_SCAN_ACC_Y] = { ADIS16209_YACCL_NULL },
31 [ADIS16209_SCAN_INCLI_X] = { ADIS16209_XINCL_NULL },
32 [ADIS16209_SCAN_INCLI_Y] = { ADIS16209_YINCL_NULL },
33 [ADIS16209_SCAN_ROT] = { },
34 [ADIS16209_SCAN_TEMP] = { },
37 static int adis16209_write_raw(struct iio_dev *indio_dev,
38 struct iio_chan_spec const *chan,
43 struct adis *st = iio_priv(indio_dev);
48 case IIO_CHAN_INFO_CALIBBIAS:
57 val16 = val & ((1 << bits) - 1);
58 addr = adis16209_addresses[chan->scan_index][0];
59 return adis_write_reg_16(st, addr, val16);
64 static int adis16209_read_raw(struct iio_dev *indio_dev,
65 struct iio_chan_spec const *chan,
69 struct adis *st = iio_priv(indio_dev);
76 case IIO_CHAN_INFO_RAW:
77 return adis_single_conversion(indio_dev, chan,
78 ADIS16209_ERROR_ACTIVE, val);
79 case IIO_CHAN_INFO_SCALE:
83 if (chan->channel == 0)
84 *val2 = 305180; /* 0.30518 mV */
86 *val2 = 610500; /* 0.6105 mV */
87 return IIO_VAL_INT_PLUS_MICRO;
89 *val = -470; /* -0.47 C */
91 return IIO_VAL_INT_PLUS_MICRO;
94 *val2 = IIO_G_TO_M_S_2(244140); /* 0.244140 mg */
95 return IIO_VAL_INT_PLUS_NANO;
99 *val2 = 25000; /* 0.025 degree */
100 return IIO_VAL_INT_PLUS_MICRO;
105 case IIO_CHAN_INFO_OFFSET:
106 *val = 25000 / -470 - 0x4FE; /* 25 C = 0x4FE */
108 case IIO_CHAN_INFO_CALIBBIAS:
109 switch (chan->type) {
116 mutex_lock(&indio_dev->mlock);
117 addr = adis16209_addresses[chan->scan_index][0];
118 ret = adis_read_reg_16(st, addr, &val16);
120 mutex_unlock(&indio_dev->mlock);
123 val16 &= (1 << bits) - 1;
124 val16 = (s16)(val16 << (16 - bits)) >> (16 - bits);
126 mutex_unlock(&indio_dev->mlock);
132 static const struct iio_chan_spec adis16209_channels[] = {
133 ADIS_SUPPLY_CHAN(ADIS16209_SUPPLY_OUT, ADIS16209_SCAN_SUPPLY, 14),
134 ADIS_TEMP_CHAN(ADIS16209_TEMP_OUT, ADIS16209_SCAN_TEMP, 12),
135 ADIS_ACCEL_CHAN(X, ADIS16209_XACCL_OUT, ADIS16209_SCAN_ACC_X,
136 BIT(IIO_CHAN_INFO_CALIBBIAS), 14),
137 ADIS_ACCEL_CHAN(Y, ADIS16209_YACCL_OUT, ADIS16209_SCAN_ACC_Y,
138 BIT(IIO_CHAN_INFO_CALIBBIAS), 14),
139 ADIS_AUX_ADC_CHAN(ADIS16209_AUX_ADC, ADIS16209_SCAN_AUX_ADC, 12),
140 ADIS_INCLI_CHAN(X, ADIS16209_XINCL_OUT, ADIS16209_SCAN_INCLI_X, 0, 14),
141 ADIS_INCLI_CHAN(Y, ADIS16209_YINCL_OUT, ADIS16209_SCAN_INCLI_Y, 0, 14),
142 ADIS_ROT_CHAN(X, ADIS16209_ROT_OUT, ADIS16209_SCAN_ROT, 0, 14),
143 IIO_CHAN_SOFT_TIMESTAMP(8)
146 static const struct iio_info adis16209_info = {
147 .read_raw = &adis16209_read_raw,
148 .write_raw = &adis16209_write_raw,
149 .update_scan_mode = adis_update_scan_mode,
150 .driver_module = THIS_MODULE,
153 static const char * const adis16209_status_error_msgs[] = {
154 [ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
155 [ADIS16209_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
156 [ADIS16209_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
157 [ADIS16209_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
158 [ADIS16209_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
161 static const struct adis_data adis16209_data = {
163 .msc_ctrl_reg = ADIS16209_MSC_CTRL,
164 .glob_cmd_reg = ADIS16209_GLOB_CMD,
165 .diag_stat_reg = ADIS16209_DIAG_STAT,
167 .self_test_mask = ADIS16209_MSC_CTRL_SELF_TEST_EN,
168 .startup_delay = ADIS16209_STARTUP_DELAY,
170 .status_error_msgs = adis16209_status_error_msgs,
171 .status_error_mask = BIT(ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT) |
172 BIT(ADIS16209_DIAG_STAT_SPI_FAIL_BIT) |
173 BIT(ADIS16209_DIAG_STAT_FLASH_UPT_BIT) |
174 BIT(ADIS16209_DIAG_STAT_POWER_HIGH_BIT) |
175 BIT(ADIS16209_DIAG_STAT_POWER_LOW_BIT),
179 static int adis16209_probe(struct spi_device *spi)
183 struct iio_dev *indio_dev;
185 /* setup the industrialio driver allocated elements */
186 indio_dev = iio_device_alloc(sizeof(*st));
187 if (indio_dev == NULL) {
191 st = iio_priv(indio_dev);
192 /* this is only used for removal purposes */
193 spi_set_drvdata(spi, indio_dev);
195 indio_dev->name = spi->dev.driver->name;
196 indio_dev->dev.parent = &spi->dev;
197 indio_dev->info = &adis16209_info;
198 indio_dev->channels = adis16209_channels;
199 indio_dev->num_channels = ARRAY_SIZE(adis16209_channels);
200 indio_dev->modes = INDIO_DIRECT_MODE;
202 ret = adis_init(st, indio_dev, spi, &adis16209_data);
205 ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
209 /* Get the device into a sane initial state */
210 ret = adis_initial_startup(st);
212 goto error_cleanup_buffer_trigger;
213 ret = iio_device_register(indio_dev);
215 goto error_cleanup_buffer_trigger;
219 error_cleanup_buffer_trigger:
220 adis_cleanup_buffer_and_trigger(st, indio_dev);
222 iio_device_free(indio_dev);
227 static int adis16209_remove(struct spi_device *spi)
229 struct iio_dev *indio_dev = spi_get_drvdata(spi);
230 struct adis *st = iio_priv(indio_dev);
232 iio_device_unregister(indio_dev);
233 adis_cleanup_buffer_and_trigger(st, indio_dev);
234 iio_device_free(indio_dev);
239 static struct spi_driver adis16209_driver = {
242 .owner = THIS_MODULE,
244 .probe = adis16209_probe,
245 .remove = adis16209_remove,
247 module_spi_driver(adis16209_driver);
249 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
250 MODULE_DESCRIPTION("Analog Devices ADIS16209 Digital Vibration Sensor driver");
251 MODULE_LICENSE("GPL v2");
252 MODULE_ALIAS("spi:adis16209");