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");