1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * ADT7316 digital temperature sensor driver supporting ADT7316/7/8 ADT7516/7/9
4 *
5 * Copyright 2010 Analog Devices Inc.
6 */
7
8 #include <linux/interrupt.h>
9 #include <linux/gpio/consumer.h>
10 #include <linux/irq.h>
11 #include <linux/workqueue.h>
12 #include <linux/device.h>
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/sysfs.h>
16 #include <linux/list.h>
17 #include <linux/i2c.h>
18 #include <linux/rtc.h>
19 #include <linux/module.h>
20
21 #include <linux/iio/iio.h>
22 #include <linux/iio/events.h>
23 #include <linux/iio/sysfs.h>
24 #include "adt7316.h"
25
26 /*
27 * ADT7316 registers definition
28 */
29 #define ADT7316_INT_STAT1 0x0
30 #define ADT7316_INT_STAT2 0x1
31 #define ADT7316_LSB_IN_TEMP_VDD 0x3
32 #define ADT7316_LSB_IN_TEMP_MASK 0x3
33 #define ADT7316_LSB_VDD_MASK 0xC
34 #define ADT7316_LSB_VDD_OFFSET 2
35 #define ADT7316_LSB_EX_TEMP_AIN 0x4
36 #define ADT7316_LSB_EX_TEMP_MASK 0x3
37 #define ADT7516_LSB_AIN_SHIFT 2
38 #define ADT7316_AD_MSB_DATA_BASE 0x6
39 #define ADT7316_AD_MSB_DATA_REGS 3
40 #define ADT7516_AD_MSB_DATA_REGS 6
41 #define ADT7316_MSB_VDD 0x6
42 #define ADT7316_MSB_IN_TEMP 0x7
43 #define ADT7316_MSB_EX_TEMP 0x8
44 #define ADT7516_MSB_AIN1 0x8
45 #define ADT7516_MSB_AIN2 0x9
46 #define ADT7516_MSB_AIN3 0xA
47 #define ADT7516_MSB_AIN4 0xB
48 #define ADT7316_DA_DATA_BASE 0x10
49 #define ADT7316_DA_10_BIT_LSB_SHIFT 6
50 #define ADT7316_DA_12_BIT_LSB_SHIFT 4
51 #define ADT7316_DA_MSB_DATA_REGS 4
52 #define ADT7316_LSB_DAC_A 0x10
53 #define ADT7316_MSB_DAC_A 0x11
54 #define ADT7316_LSB_DAC_B 0x12
55 #define ADT7316_MSB_DAC_B 0x13
56 #define ADT7316_LSB_DAC_C 0x14
57 #define ADT7316_MSB_DAC_C 0x15
58 #define ADT7316_LSB_DAC_D 0x16
59 #define ADT7316_MSB_DAC_D 0x17
60 #define ADT7316_CONFIG1 0x18
61 #define ADT7316_CONFIG2 0x19
62 #define ADT7316_CONFIG3 0x1A
63 #define ADT7316_DAC_CONFIG 0x1B
64 #define ADT7316_LDAC_CONFIG 0x1C
65 #define ADT7316_INT_MASK1 0x1D
66 #define ADT7316_INT_MASK2 0x1E
67 #define ADT7316_IN_TEMP_OFFSET 0x1F
68 #define ADT7316_EX_TEMP_OFFSET 0x20
69 #define ADT7316_IN_ANALOG_TEMP_OFFSET 0x21
70 #define ADT7316_EX_ANALOG_TEMP_OFFSET 0x22
71 #define ADT7316_VDD_HIGH 0x23
72 #define ADT7316_VDD_LOW 0x24
73 #define ADT7316_IN_TEMP_HIGH 0x25
74 #define ADT7316_IN_TEMP_LOW 0x26
75 #define ADT7316_EX_TEMP_HIGH 0x27
76 #define ADT7316_EX_TEMP_LOW 0x28
77 #define ADT7516_AIN2_HIGH 0x2B
78 #define ADT7516_AIN2_LOW 0x2C
79 #define ADT7516_AIN3_HIGH 0x2D
80 #define ADT7516_AIN3_LOW 0x2E
81 #define ADT7516_AIN4_HIGH 0x2F
82 #define ADT7516_AIN4_LOW 0x30
83 #define ADT7316_DEVICE_ID 0x4D
84 #define ADT7316_MANUFACTURE_ID 0x4E
85 #define ADT7316_DEVICE_REV 0x4F
86 #define ADT7316_SPI_LOCK_STAT 0x7F
87
88 /*
89 * ADT7316 config1
90 */
91 #define ADT7316_EN 0x1
92 #define ADT7516_SEL_EX_TEMP 0x4
93 #define ADT7516_SEL_AIN1_2_EX_TEMP_MASK 0x6
94 #define ADT7516_SEL_AIN3 0x8
95 #define ADT7316_INT_EN 0x20
96 #define ADT7316_INT_POLARITY 0x40
97 #define ADT7316_PD 0x80
98
99 /*
100 * ADT7316 config2
101 */
102 #define ADT7316_AD_SINGLE_CH_MASK 0x3
103 #define ADT7516_AD_SINGLE_CH_MASK 0x7
104 #define ADT7316_AD_SINGLE_CH_VDD 0
105 #define ADT7316_AD_SINGLE_CH_IN 1
106 #define ADT7316_AD_SINGLE_CH_EX 2
107 #define ADT7516_AD_SINGLE_CH_AIN1 2
108 #define ADT7516_AD_SINGLE_CH_AIN2 3
109 #define ADT7516_AD_SINGLE_CH_AIN3 4
110 #define ADT7516_AD_SINGLE_CH_AIN4 5
111 #define ADT7316_AD_SINGLE_CH_MODE 0x10
112 #define ADT7316_DISABLE_AVERAGING 0x20
113 #define ADT7316_EN_SMBUS_TIMEOUT 0x40
114 #define ADT7316_RESET 0x80
115
116 /*
117 * ADT7316 config3
118 */
119 #define ADT7316_ADCLK_22_5 0x1
120 #define ADT7316_DA_HIGH_RESOLUTION 0x2
121 #define ADT7316_DA_EN_VIA_DAC_LDAC 0x8
122 #define ADT7516_AIN_IN_VREF 0x10
123 #define ADT7316_EN_IN_TEMP_PROP_DACA 0x20
124 #define ADT7316_EN_EX_TEMP_PROP_DACB 0x40
125
126 /*
127 * ADT7316 DAC config
128 */
129 #define ADT7316_DA_2VREF_CH_MASK 0xF
130 #define ADT7316_DA_EN_MODE_MASK 0x30
131 #define ADT7316_DA_EN_MODE_SHIFT 4
132 #define ADT7316_DA_EN_MODE_SINGLE 0x00
133 #define ADT7316_DA_EN_MODE_AB_CD 0x10
134 #define ADT7316_DA_EN_MODE_ABCD 0x20
135 #define ADT7316_DA_EN_MODE_LDAC 0x30
136 #define ADT7316_VREF_BYPASS_DAC_AB 0x40
137 #define ADT7316_VREF_BYPASS_DAC_CD 0x80
138
139 /*
140 * ADT7316 LDAC config
141 */
142 #define ADT7316_LDAC_EN_DA_MASK 0xF
143 #define ADT7316_DAC_IN_VREF 0x10
144 #define ADT7516_DAC_AB_IN_VREF 0x10
145 #define ADT7516_DAC_CD_IN_VREF 0x20
146 #define ADT7516_DAC_IN_VREF_OFFSET 4
147 #define ADT7516_DAC_IN_VREF_MASK 0x30
148
149 /*
150 * ADT7316 INT_MASK2
151 */
152 #define ADT7316_INT_MASK2_VDD 0x10
153
154 /*
155 * ADT7316 value masks
156 */
157 #define ADT7316_VALUE_MASK 0xfff
158 #define ADT7316_T_VALUE_SIGN 0x400
159 #define ADT7316_T_VALUE_FLOAT_OFFSET 2
160 #define ADT7316_T_VALUE_FLOAT_MASK 0x2
161
162 /*
163 * Chip ID
164 */
165 #define ID_ADT7316 0x1
166 #define ID_ADT7317 0x2
167 #define ID_ADT7318 0x3
168 #define ID_ADT7516 0x11
169 #define ID_ADT7517 0x12
170 #define ID_ADT7519 0x14
171
172 #define ID_FAMILY_MASK 0xF0
173 #define ID_ADT73XX 0x0
174 #define ID_ADT75XX 0x10
175
176 /*
177 * struct adt7316_chip_info - chip specific information
178 */
179
180 struct adt7316_chip_info {
181 struct adt7316_bus bus;
182 struct gpio_desc *ldac_pin;
183 u16 int_mask; /* 0x2f */
184 u8 config1;
185 u8 config2;
186 u8 config3;
187 u8 dac_config; /* DAC config */
188 u8 ldac_config; /* LDAC config */
189 u8 dac_bits; /* 8, 10, 12 */
190 u8 id; /* chip id */
191 };
192
193 /*
194 * Logic interrupt mask for user application to enable
195 * interrupts.
196 */
197 #define ADT7316_IN_TEMP_HIGH_INT_MASK 0x1
198 #define ADT7316_IN_TEMP_LOW_INT_MASK 0x2
199 #define ADT7316_EX_TEMP_HIGH_INT_MASK 0x4
200 #define ADT7316_EX_TEMP_LOW_INT_MASK 0x8
201 #define ADT7316_EX_TEMP_FAULT_INT_MASK 0x10
202 #define ADT7516_AIN1_INT_MASK 0x4
203 #define ADT7516_AIN2_INT_MASK 0x20
204 #define ADT7516_AIN3_INT_MASK 0x40
205 #define ADT7516_AIN4_INT_MASK 0x80
206 #define ADT7316_VDD_INT_MASK 0x100
207 #define ADT7316_TEMP_INT_MASK 0x1F
208 #define ADT7516_AIN_INT_MASK 0xE0
209 #define ADT7316_TEMP_AIN_INT_MASK \
210 (ADT7316_TEMP_INT_MASK)
211
212 /*
213 * struct adt7316_chip_info - chip specific information
214 */
215
216 struct adt7316_limit_regs {
217 u16 data_high;
218 u16 data_low;
219 };
220
adt7316_show_enabled(struct device * dev,struct device_attribute * attr,char * buf)221 static ssize_t adt7316_show_enabled(struct device *dev,
222 struct device_attribute *attr,
223 char *buf)
224 {
225 struct iio_dev *dev_info = dev_to_iio_dev(dev);
226 struct adt7316_chip_info *chip = iio_priv(dev_info);
227
228 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_EN));
229 }
230
_adt7316_store_enabled(struct adt7316_chip_info * chip,int enable)231 static ssize_t _adt7316_store_enabled(struct adt7316_chip_info *chip,
232 int enable)
233 {
234 u8 config1;
235 int ret;
236
237 if (enable)
238 config1 = chip->config1 | ADT7316_EN;
239 else
240 config1 = chip->config1 & ~ADT7316_EN;
241
242 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
243 if (ret)
244 return -EIO;
245
246 chip->config1 = config1;
247
248 return ret;
249 }
250
adt7316_store_enabled(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)251 static ssize_t adt7316_store_enabled(struct device *dev,
252 struct device_attribute *attr,
253 const char *buf,
254 size_t len)
255 {
256 struct iio_dev *dev_info = dev_to_iio_dev(dev);
257 struct adt7316_chip_info *chip = iio_priv(dev_info);
258 int enable;
259
260 if (buf[0] == '1')
261 enable = 1;
262 else
263 enable = 0;
264
265 if (_adt7316_store_enabled(chip, enable) < 0)
266 return -EIO;
267
268 return len;
269 }
270
271 static IIO_DEVICE_ATTR(enabled, 0644,
272 adt7316_show_enabled,
273 adt7316_store_enabled,
274 0);
275
adt7316_show_select_ex_temp(struct device * dev,struct device_attribute * attr,char * buf)276 static ssize_t adt7316_show_select_ex_temp(struct device *dev,
277 struct device_attribute *attr,
278 char *buf)
279 {
280 struct iio_dev *dev_info = dev_to_iio_dev(dev);
281 struct adt7316_chip_info *chip = iio_priv(dev_info);
282
283 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
284 return -EPERM;
285
286 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7516_SEL_EX_TEMP));
287 }
288
adt7316_store_select_ex_temp(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)289 static ssize_t adt7316_store_select_ex_temp(struct device *dev,
290 struct device_attribute *attr,
291 const char *buf,
292 size_t len)
293 {
294 struct iio_dev *dev_info = dev_to_iio_dev(dev);
295 struct adt7316_chip_info *chip = iio_priv(dev_info);
296 u8 config1;
297 int ret;
298
299 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
300 return -EPERM;
301
302 config1 = chip->config1 & (~ADT7516_SEL_EX_TEMP);
303 if (buf[0] == '1')
304 config1 |= ADT7516_SEL_EX_TEMP;
305
306 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
307 if (ret)
308 return -EIO;
309
310 chip->config1 = config1;
311
312 return len;
313 }
314
315 static IIO_DEVICE_ATTR(select_ex_temp, 0644,
316 adt7316_show_select_ex_temp,
317 adt7316_store_select_ex_temp,
318 0);
319
adt7316_show_mode(struct device * dev,struct device_attribute * attr,char * buf)320 static ssize_t adt7316_show_mode(struct device *dev,
321 struct device_attribute *attr,
322 char *buf)
323 {
324 struct iio_dev *dev_info = dev_to_iio_dev(dev);
325 struct adt7316_chip_info *chip = iio_priv(dev_info);
326
327 if (chip->config2 & ADT7316_AD_SINGLE_CH_MODE)
328 return sprintf(buf, "single_channel\n");
329
330 return sprintf(buf, "round_robin\n");
331 }
332
adt7316_store_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)333 static ssize_t adt7316_store_mode(struct device *dev,
334 struct device_attribute *attr,
335 const char *buf,
336 size_t len)
337 {
338 struct iio_dev *dev_info = dev_to_iio_dev(dev);
339 struct adt7316_chip_info *chip = iio_priv(dev_info);
340 u8 config2;
341 int ret;
342
343 config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MODE);
344 if (!memcmp(buf, "single_channel", 14))
345 config2 |= ADT7316_AD_SINGLE_CH_MODE;
346
347 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
348 if (ret)
349 return -EIO;
350
351 chip->config2 = config2;
352
353 return len;
354 }
355
356 static IIO_DEVICE_ATTR(mode, 0644,
357 adt7316_show_mode,
358 adt7316_store_mode,
359 0);
360
adt7316_show_all_modes(struct device * dev,struct device_attribute * attr,char * buf)361 static ssize_t adt7316_show_all_modes(struct device *dev,
362 struct device_attribute *attr,
363 char *buf)
364 {
365 return sprintf(buf, "single_channel\nround_robin\n");
366 }
367
368 static IIO_DEVICE_ATTR(all_modes, 0444, adt7316_show_all_modes, NULL, 0);
369
adt7316_show_ad_channel(struct device * dev,struct device_attribute * attr,char * buf)370 static ssize_t adt7316_show_ad_channel(struct device *dev,
371 struct device_attribute *attr,
372 char *buf)
373 {
374 struct iio_dev *dev_info = dev_to_iio_dev(dev);
375 struct adt7316_chip_info *chip = iio_priv(dev_info);
376
377 if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
378 return -EPERM;
379
380 switch (chip->config2 & ADT7516_AD_SINGLE_CH_MASK) {
381 case ADT7316_AD_SINGLE_CH_VDD:
382 return sprintf(buf, "0 - VDD\n");
383 case ADT7316_AD_SINGLE_CH_IN:
384 return sprintf(buf, "1 - Internal Temperature\n");
385 case ADT7316_AD_SINGLE_CH_EX:
386 if (((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) &&
387 (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
388 return sprintf(buf, "2 - AIN1\n");
389
390 return sprintf(buf, "2 - External Temperature\n");
391 case ADT7516_AD_SINGLE_CH_AIN2:
392 if ((chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
393 return sprintf(buf, "3 - AIN2\n");
394
395 return sprintf(buf, "N/A\n");
396 case ADT7516_AD_SINGLE_CH_AIN3:
397 if (chip->config1 & ADT7516_SEL_AIN3)
398 return sprintf(buf, "4 - AIN3\n");
399
400 return sprintf(buf, "N/A\n");
401 case ADT7516_AD_SINGLE_CH_AIN4:
402 return sprintf(buf, "5 - AIN4\n");
403 default:
404 return sprintf(buf, "N/A\n");
405 }
406 }
407
adt7316_store_ad_channel(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)408 static ssize_t adt7316_store_ad_channel(struct device *dev,
409 struct device_attribute *attr,
410 const char *buf,
411 size_t len)
412 {
413 struct iio_dev *dev_info = dev_to_iio_dev(dev);
414 struct adt7316_chip_info *chip = iio_priv(dev_info);
415 u8 config2;
416 u8 data;
417 int ret;
418
419 if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
420 return -EPERM;
421
422 ret = kstrtou8(buf, 10, &data);
423 if (ret)
424 return -EINVAL;
425
426 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
427 if (data > 5)
428 return -EINVAL;
429
430 config2 = chip->config2 & (~ADT7516_AD_SINGLE_CH_MASK);
431 } else {
432 if (data > 2)
433 return -EINVAL;
434
435 config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MASK);
436 }
437
438 config2 |= data;
439
440 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
441 if (ret)
442 return -EIO;
443
444 chip->config2 = config2;
445
446 return len;
447 }
448
449 static IIO_DEVICE_ATTR(ad_channel, 0644,
450 adt7316_show_ad_channel,
451 adt7316_store_ad_channel,
452 0);
453
adt7316_show_all_ad_channels(struct device * dev,struct device_attribute * attr,char * buf)454 static ssize_t adt7316_show_all_ad_channels(struct device *dev,
455 struct device_attribute *attr,
456 char *buf)
457 {
458 struct iio_dev *dev_info = dev_to_iio_dev(dev);
459 struct adt7316_chip_info *chip = iio_priv(dev_info);
460
461 if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
462 return -EPERM;
463
464 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
465 return sprintf(buf, "0 - VDD\n1 - Internal Temperature\n"
466 "2 - External Temperature or AIN1\n"
467 "3 - AIN2\n4 - AIN3\n5 - AIN4\n");
468 return sprintf(buf, "0 - VDD\n1 - Internal Temperature\n"
469 "2 - External Temperature\n");
470 }
471
472 static IIO_DEVICE_ATTR(all_ad_channels, 0444,
473 adt7316_show_all_ad_channels, NULL, 0);
474
adt7316_show_disable_averaging(struct device * dev,struct device_attribute * attr,char * buf)475 static ssize_t adt7316_show_disable_averaging(struct device *dev,
476 struct device_attribute *attr,
477 char *buf)
478 {
479 struct iio_dev *dev_info = dev_to_iio_dev(dev);
480 struct adt7316_chip_info *chip = iio_priv(dev_info);
481
482 return sprintf(buf, "%d\n",
483 !!(chip->config2 & ADT7316_DISABLE_AVERAGING));
484 }
485
adt7316_store_disable_averaging(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)486 static ssize_t adt7316_store_disable_averaging(struct device *dev,
487 struct device_attribute *attr,
488 const char *buf,
489 size_t len)
490 {
491 struct iio_dev *dev_info = dev_to_iio_dev(dev);
492 struct adt7316_chip_info *chip = iio_priv(dev_info);
493 u8 config2;
494 int ret;
495
496 config2 = chip->config2 & (~ADT7316_DISABLE_AVERAGING);
497 if (buf[0] == '1')
498 config2 |= ADT7316_DISABLE_AVERAGING;
499
500 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
501 if (ret)
502 return -EIO;
503
504 chip->config2 = config2;
505
506 return len;
507 }
508
509 static IIO_DEVICE_ATTR(disable_averaging, 0644,
510 adt7316_show_disable_averaging,
511 adt7316_store_disable_averaging,
512 0);
513
adt7316_show_enable_smbus_timeout(struct device * dev,struct device_attribute * attr,char * buf)514 static ssize_t adt7316_show_enable_smbus_timeout(struct device *dev,
515 struct device_attribute *attr,
516 char *buf)
517 {
518 struct iio_dev *dev_info = dev_to_iio_dev(dev);
519 struct adt7316_chip_info *chip = iio_priv(dev_info);
520
521 return sprintf(buf, "%d\n",
522 !!(chip->config2 & ADT7316_EN_SMBUS_TIMEOUT));
523 }
524
adt7316_store_enable_smbus_timeout(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)525 static ssize_t adt7316_store_enable_smbus_timeout(struct device *dev,
526 struct device_attribute *attr,
527 const char *buf,
528 size_t len)
529 {
530 struct iio_dev *dev_info = dev_to_iio_dev(dev);
531 struct adt7316_chip_info *chip = iio_priv(dev_info);
532 u8 config2;
533 int ret;
534
535 config2 = chip->config2 & (~ADT7316_EN_SMBUS_TIMEOUT);
536 if (buf[0] == '1')
537 config2 |= ADT7316_EN_SMBUS_TIMEOUT;
538
539 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
540 if (ret)
541 return -EIO;
542
543 chip->config2 = config2;
544
545 return len;
546 }
547
548 static IIO_DEVICE_ATTR(enable_smbus_timeout, 0644,
549 adt7316_show_enable_smbus_timeout,
550 adt7316_store_enable_smbus_timeout,
551 0);
552
adt7316_show_powerdown(struct device * dev,struct device_attribute * attr,char * buf)553 static ssize_t adt7316_show_powerdown(struct device *dev,
554 struct device_attribute *attr,
555 char *buf)
556 {
557 struct iio_dev *dev_info = dev_to_iio_dev(dev);
558 struct adt7316_chip_info *chip = iio_priv(dev_info);
559
560 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_PD));
561 }
562
adt7316_store_powerdown(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)563 static ssize_t adt7316_store_powerdown(struct device *dev,
564 struct device_attribute *attr,
565 const char *buf,
566 size_t len)
567 {
568 struct iio_dev *dev_info = dev_to_iio_dev(dev);
569 struct adt7316_chip_info *chip = iio_priv(dev_info);
570 u8 config1;
571 int ret;
572
573 config1 = chip->config1 & (~ADT7316_PD);
574 if (buf[0] == '1')
575 config1 |= ADT7316_PD;
576
577 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
578 if (ret)
579 return -EIO;
580
581 chip->config1 = config1;
582
583 return len;
584 }
585
586 static IIO_DEVICE_ATTR(powerdown, 0644,
587 adt7316_show_powerdown,
588 adt7316_store_powerdown,
589 0);
590
adt7316_show_fast_ad_clock(struct device * dev,struct device_attribute * attr,char * buf)591 static ssize_t adt7316_show_fast_ad_clock(struct device *dev,
592 struct device_attribute *attr,
593 char *buf)
594 {
595 struct iio_dev *dev_info = dev_to_iio_dev(dev);
596 struct adt7316_chip_info *chip = iio_priv(dev_info);
597
598 return sprintf(buf, "%d\n", !!(chip->config3 & ADT7316_ADCLK_22_5));
599 }
600
adt7316_store_fast_ad_clock(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)601 static ssize_t adt7316_store_fast_ad_clock(struct device *dev,
602 struct device_attribute *attr,
603 const char *buf,
604 size_t len)
605 {
606 struct iio_dev *dev_info = dev_to_iio_dev(dev);
607 struct adt7316_chip_info *chip = iio_priv(dev_info);
608 u8 config3;
609 int ret;
610
611 config3 = chip->config3 & (~ADT7316_ADCLK_22_5);
612 if (buf[0] == '1')
613 config3 |= ADT7316_ADCLK_22_5;
614
615 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
616 if (ret)
617 return -EIO;
618
619 chip->config3 = config3;
620
621 return len;
622 }
623
624 static IIO_DEVICE_ATTR(fast_ad_clock, 0644,
625 adt7316_show_fast_ad_clock,
626 adt7316_store_fast_ad_clock,
627 0);
628
adt7316_show_da_high_resolution(struct device * dev,struct device_attribute * attr,char * buf)629 static ssize_t adt7316_show_da_high_resolution(struct device *dev,
630 struct device_attribute *attr,
631 char *buf)
632 {
633 struct iio_dev *dev_info = dev_to_iio_dev(dev);
634 struct adt7316_chip_info *chip = iio_priv(dev_info);
635
636 if (chip->config3 & ADT7316_DA_HIGH_RESOLUTION) {
637 if (chip->id != ID_ADT7318 && chip->id != ID_ADT7519)
638 return sprintf(buf, "1 (10 bits)\n");
639 }
640
641 return sprintf(buf, "0 (8 bits)\n");
642 }
643
adt7316_store_da_high_resolution(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)644 static ssize_t adt7316_store_da_high_resolution(struct device *dev,
645 struct device_attribute *attr,
646 const char *buf,
647 size_t len)
648 {
649 struct iio_dev *dev_info = dev_to_iio_dev(dev);
650 struct adt7316_chip_info *chip = iio_priv(dev_info);
651 u8 config3;
652 int ret;
653
654 if (chip->id == ID_ADT7318 || chip->id == ID_ADT7519)
655 return -EPERM;
656
657 config3 = chip->config3 & (~ADT7316_DA_HIGH_RESOLUTION);
658 if (buf[0] == '1')
659 config3 |= ADT7316_DA_HIGH_RESOLUTION;
660
661 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
662 if (ret)
663 return -EIO;
664
665 chip->config3 = config3;
666
667 return len;
668 }
669
670 static IIO_DEVICE_ATTR(da_high_resolution, 0644,
671 adt7316_show_da_high_resolution,
672 adt7316_store_da_high_resolution,
673 0);
674
adt7316_show_AIN_internal_Vref(struct device * dev,struct device_attribute * attr,char * buf)675 static ssize_t adt7316_show_AIN_internal_Vref(struct device *dev,
676 struct device_attribute *attr,
677 char *buf)
678 {
679 struct iio_dev *dev_info = dev_to_iio_dev(dev);
680 struct adt7316_chip_info *chip = iio_priv(dev_info);
681
682 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
683 return -EPERM;
684
685 return sprintf(buf, "%d\n",
686 !!(chip->config3 & ADT7516_AIN_IN_VREF));
687 }
688
adt7316_store_AIN_internal_Vref(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)689 static ssize_t adt7316_store_AIN_internal_Vref(struct device *dev,
690 struct device_attribute *attr,
691 const char *buf,
692 size_t len)
693 {
694 struct iio_dev *dev_info = dev_to_iio_dev(dev);
695 struct adt7316_chip_info *chip = iio_priv(dev_info);
696 u8 config3;
697 int ret;
698
699 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
700 return -EPERM;
701
702 if (buf[0] != '1')
703 config3 = chip->config3 & (~ADT7516_AIN_IN_VREF);
704 else
705 config3 = chip->config3 | ADT7516_AIN_IN_VREF;
706
707 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
708 if (ret)
709 return -EIO;
710
711 chip->config3 = config3;
712
713 return len;
714 }
715
716 static IIO_DEVICE_ATTR(AIN_internal_Vref, 0644,
717 adt7316_show_AIN_internal_Vref,
718 adt7316_store_AIN_internal_Vref,
719 0);
720
adt7316_show_enable_prop_DACA(struct device * dev,struct device_attribute * attr,char * buf)721 static ssize_t adt7316_show_enable_prop_DACA(struct device *dev,
722 struct device_attribute *attr,
723 char *buf)
724 {
725 struct iio_dev *dev_info = dev_to_iio_dev(dev);
726 struct adt7316_chip_info *chip = iio_priv(dev_info);
727
728 return sprintf(buf, "%d\n",
729 !!(chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA));
730 }
731
adt7316_store_enable_prop_DACA(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)732 static ssize_t adt7316_store_enable_prop_DACA(struct device *dev,
733 struct device_attribute *attr,
734 const char *buf,
735 size_t len)
736 {
737 struct iio_dev *dev_info = dev_to_iio_dev(dev);
738 struct adt7316_chip_info *chip = iio_priv(dev_info);
739 u8 config3;
740 int ret;
741
742 config3 = chip->config3 & (~ADT7316_EN_IN_TEMP_PROP_DACA);
743 if (buf[0] == '1')
744 config3 |= ADT7316_EN_IN_TEMP_PROP_DACA;
745
746 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
747 if (ret)
748 return -EIO;
749
750 chip->config3 = config3;
751
752 return len;
753 }
754
755 static IIO_DEVICE_ATTR(enable_proportion_DACA, 0644,
756 adt7316_show_enable_prop_DACA,
757 adt7316_store_enable_prop_DACA,
758 0);
759
adt7316_show_enable_prop_DACB(struct device * dev,struct device_attribute * attr,char * buf)760 static ssize_t adt7316_show_enable_prop_DACB(struct device *dev,
761 struct device_attribute *attr,
762 char *buf)
763 {
764 struct iio_dev *dev_info = dev_to_iio_dev(dev);
765 struct adt7316_chip_info *chip = iio_priv(dev_info);
766
767 return sprintf(buf, "%d\n",
768 !!(chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB));
769 }
770
adt7316_store_enable_prop_DACB(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)771 static ssize_t adt7316_store_enable_prop_DACB(struct device *dev,
772 struct device_attribute *attr,
773 const char *buf,
774 size_t len)
775 {
776 struct iio_dev *dev_info = dev_to_iio_dev(dev);
777 struct adt7316_chip_info *chip = iio_priv(dev_info);
778 u8 config3;
779 int ret;
780
781 config3 = chip->config3 & (~ADT7316_EN_EX_TEMP_PROP_DACB);
782 if (buf[0] == '1')
783 config3 |= ADT7316_EN_EX_TEMP_PROP_DACB;
784
785 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
786 if (ret)
787 return -EIO;
788
789 chip->config3 = config3;
790
791 return len;
792 }
793
794 static IIO_DEVICE_ATTR(enable_proportion_DACB, 0644,
795 adt7316_show_enable_prop_DACB,
796 adt7316_store_enable_prop_DACB,
797 0);
798
adt7316_show_DAC_2Vref_ch_mask(struct device * dev,struct device_attribute * attr,char * buf)799 static ssize_t adt7316_show_DAC_2Vref_ch_mask(struct device *dev,
800 struct device_attribute *attr,
801 char *buf)
802 {
803 struct iio_dev *dev_info = dev_to_iio_dev(dev);
804 struct adt7316_chip_info *chip = iio_priv(dev_info);
805
806 return sprintf(buf, "0x%x\n",
807 chip->dac_config & ADT7316_DA_2VREF_CH_MASK);
808 }
809
adt7316_store_DAC_2Vref_ch_mask(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)810 static ssize_t adt7316_store_DAC_2Vref_ch_mask(struct device *dev,
811 struct device_attribute *attr,
812 const char *buf,
813 size_t len)
814 {
815 struct iio_dev *dev_info = dev_to_iio_dev(dev);
816 struct adt7316_chip_info *chip = iio_priv(dev_info);
817 u8 dac_config;
818 u8 data;
819 int ret;
820
821 ret = kstrtou8(buf, 16, &data);
822 if (ret || data > ADT7316_DA_2VREF_CH_MASK)
823 return -EINVAL;
824
825 dac_config = chip->dac_config & (~ADT7316_DA_2VREF_CH_MASK);
826 dac_config |= data;
827
828 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
829 if (ret)
830 return -EIO;
831
832 chip->dac_config = dac_config;
833
834 return len;
835 }
836
837 static IIO_DEVICE_ATTR(DAC_2Vref_channels_mask, 0644,
838 adt7316_show_DAC_2Vref_ch_mask,
839 adt7316_store_DAC_2Vref_ch_mask,
840 0);
841
adt7316_show_DAC_update_mode(struct device * dev,struct device_attribute * attr,char * buf)842 static ssize_t adt7316_show_DAC_update_mode(struct device *dev,
843 struct device_attribute *attr,
844 char *buf)
845 {
846 struct iio_dev *dev_info = dev_to_iio_dev(dev);
847 struct adt7316_chip_info *chip = iio_priv(dev_info);
848
849 if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC))
850 return sprintf(buf, "manual\n");
851
852 switch (chip->dac_config & ADT7316_DA_EN_MODE_MASK) {
853 case ADT7316_DA_EN_MODE_SINGLE:
854 return sprintf(buf,
855 "0 - auto at any MSB DAC writing\n");
856 case ADT7316_DA_EN_MODE_AB_CD:
857 return sprintf(buf,
858 "1 - auto at MSB DAC AB and CD writing\n");
859 case ADT7316_DA_EN_MODE_ABCD:
860 return sprintf(buf,
861 "2 - auto at MSB DAC ABCD writing\n");
862 default: /* ADT7316_DA_EN_MODE_LDAC */
863 return sprintf(buf, "3 - manual\n");
864 }
865 }
866
adt7316_store_DAC_update_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)867 static ssize_t adt7316_store_DAC_update_mode(struct device *dev,
868 struct device_attribute *attr,
869 const char *buf,
870 size_t len)
871 {
872 struct iio_dev *dev_info = dev_to_iio_dev(dev);
873 struct adt7316_chip_info *chip = iio_priv(dev_info);
874 u8 dac_config;
875 u8 data;
876 int ret;
877
878 if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC))
879 return -EPERM;
880
881 ret = kstrtou8(buf, 10, &data);
882 if (ret || data > (ADT7316_DA_EN_MODE_MASK >> ADT7316_DA_EN_MODE_SHIFT))
883 return -EINVAL;
884
885 dac_config = chip->dac_config & (~ADT7316_DA_EN_MODE_MASK);
886 dac_config |= data << ADT7316_DA_EN_MODE_SHIFT;
887
888 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
889 if (ret)
890 return -EIO;
891
892 chip->dac_config = dac_config;
893
894 return len;
895 }
896
897 static IIO_DEVICE_ATTR(DAC_update_mode, 0644,
898 adt7316_show_DAC_update_mode,
899 adt7316_store_DAC_update_mode,
900 0);
901
adt7316_show_all_DAC_update_modes(struct device * dev,struct device_attribute * attr,char * buf)902 static ssize_t adt7316_show_all_DAC_update_modes(struct device *dev,
903 struct device_attribute *attr,
904 char *buf)
905 {
906 struct iio_dev *dev_info = dev_to_iio_dev(dev);
907 struct adt7316_chip_info *chip = iio_priv(dev_info);
908
909 if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC)
910 return sprintf(buf, "0 - auto at any MSB DAC writing\n"
911 "1 - auto at MSB DAC AB and CD writing\n"
912 "2 - auto at MSB DAC ABCD writing\n"
913 "3 - manual\n");
914 return sprintf(buf, "manual\n");
915 }
916
917 static IIO_DEVICE_ATTR(all_DAC_update_modes, 0444,
918 adt7316_show_all_DAC_update_modes, NULL, 0);
919
adt7316_store_update_DAC(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)920 static ssize_t adt7316_store_update_DAC(struct device *dev,
921 struct device_attribute *attr,
922 const char *buf,
923 size_t len)
924 {
925 struct iio_dev *dev_info = dev_to_iio_dev(dev);
926 struct adt7316_chip_info *chip = iio_priv(dev_info);
927 u8 ldac_config;
928 u8 data;
929 int ret;
930
931 if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDAC) {
932 if ((chip->dac_config & ADT7316_DA_EN_MODE_MASK) !=
933 ADT7316_DA_EN_MODE_LDAC)
934 return -EPERM;
935
936 ret = kstrtou8(buf, 16, &data);
937 if (ret || data > ADT7316_LDAC_EN_DA_MASK)
938 return -EINVAL;
939
940 ldac_config = chip->ldac_config & (~ADT7316_LDAC_EN_DA_MASK);
941 ldac_config |= data;
942
943 ret = chip->bus.write(chip->bus.client, ADT7316_LDAC_CONFIG,
944 ldac_config);
945 if (ret)
946 return -EIO;
947 } else {
948 gpiod_set_value(chip->ldac_pin, 0);
949 gpiod_set_value(chip->ldac_pin, 1);
950 }
951
952 return len;
953 }
954
955 static IIO_DEVICE_ATTR(update_DAC, 0644,
956 NULL,
957 adt7316_store_update_DAC,
958 0);
959
adt7316_show_DA_AB_Vref_bypass(struct device * dev,struct device_attribute * attr,char * buf)960 static ssize_t adt7316_show_DA_AB_Vref_bypass(struct device *dev,
961 struct device_attribute *attr,
962 char *buf)
963 {
964 struct iio_dev *dev_info = dev_to_iio_dev(dev);
965 struct adt7316_chip_info *chip = iio_priv(dev_info);
966
967 return sprintf(buf, "%d\n",
968 !!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_AB));
969 }
970
adt7316_store_DA_AB_Vref_bypass(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)971 static ssize_t adt7316_store_DA_AB_Vref_bypass(struct device *dev,
972 struct device_attribute *attr,
973 const char *buf,
974 size_t len)
975 {
976 struct iio_dev *dev_info = dev_to_iio_dev(dev);
977 struct adt7316_chip_info *chip = iio_priv(dev_info);
978 u8 dac_config;
979 int ret;
980
981 dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_AB);
982 if (buf[0] == '1')
983 dac_config |= ADT7316_VREF_BYPASS_DAC_AB;
984
985 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
986 if (ret)
987 return -EIO;
988
989 chip->dac_config = dac_config;
990
991 return len;
992 }
993
994 static IIO_DEVICE_ATTR(DA_AB_Vref_bypass, 0644,
995 adt7316_show_DA_AB_Vref_bypass,
996 adt7316_store_DA_AB_Vref_bypass,
997 0);
998
adt7316_show_DA_CD_Vref_bypass(struct device * dev,struct device_attribute * attr,char * buf)999 static ssize_t adt7316_show_DA_CD_Vref_bypass(struct device *dev,
1000 struct device_attribute *attr,
1001 char *buf)
1002 {
1003 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1004 struct adt7316_chip_info *chip = iio_priv(dev_info);
1005
1006 return sprintf(buf, "%d\n",
1007 !!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_CD));
1008 }
1009
adt7316_store_DA_CD_Vref_bypass(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1010 static ssize_t adt7316_store_DA_CD_Vref_bypass(struct device *dev,
1011 struct device_attribute *attr,
1012 const char *buf,
1013 size_t len)
1014 {
1015 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1016 struct adt7316_chip_info *chip = iio_priv(dev_info);
1017 u8 dac_config;
1018 int ret;
1019
1020 dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_CD);
1021 if (buf[0] == '1')
1022 dac_config |= ADT7316_VREF_BYPASS_DAC_CD;
1023
1024 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
1025 if (ret)
1026 return -EIO;
1027
1028 chip->dac_config = dac_config;
1029
1030 return len;
1031 }
1032
1033 static IIO_DEVICE_ATTR(DA_CD_Vref_bypass, 0644,
1034 adt7316_show_DA_CD_Vref_bypass,
1035 adt7316_store_DA_CD_Vref_bypass,
1036 0);
1037
adt7316_show_DAC_internal_Vref(struct device * dev,struct device_attribute * attr,char * buf)1038 static ssize_t adt7316_show_DAC_internal_Vref(struct device *dev,
1039 struct device_attribute *attr,
1040 char *buf)
1041 {
1042 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1043 struct adt7316_chip_info *chip = iio_priv(dev_info);
1044
1045 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
1046 return sprintf(buf, "0x%x\n",
1047 (chip->ldac_config & ADT7516_DAC_IN_VREF_MASK) >>
1048 ADT7516_DAC_IN_VREF_OFFSET);
1049 return sprintf(buf, "%d\n",
1050 !!(chip->ldac_config & ADT7316_DAC_IN_VREF));
1051 }
1052
adt7316_store_DAC_internal_Vref(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1053 static ssize_t adt7316_store_DAC_internal_Vref(struct device *dev,
1054 struct device_attribute *attr,
1055 const char *buf,
1056 size_t len)
1057 {
1058 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1059 struct adt7316_chip_info *chip = iio_priv(dev_info);
1060 u8 ldac_config;
1061 u8 data;
1062 int ret;
1063
1064 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
1065 ret = kstrtou8(buf, 16, &data);
1066 if (ret || data > 3)
1067 return -EINVAL;
1068
1069 ldac_config = chip->ldac_config & (~ADT7516_DAC_IN_VREF_MASK);
1070 if (data & 0x1)
1071 ldac_config |= ADT7516_DAC_AB_IN_VREF;
1072 if (data & 0x2)
1073 ldac_config |= ADT7516_DAC_CD_IN_VREF;
1074 } else {
1075 ret = kstrtou8(buf, 16, &data);
1076 if (ret)
1077 return -EINVAL;
1078
1079 ldac_config = chip->ldac_config & (~ADT7316_DAC_IN_VREF);
1080 if (data)
1081 ldac_config = chip->ldac_config | ADT7316_DAC_IN_VREF;
1082 }
1083
1084 ret = chip->bus.write(chip->bus.client, ADT7316_LDAC_CONFIG,
1085 ldac_config);
1086 if (ret)
1087 return -EIO;
1088
1089 chip->ldac_config = ldac_config;
1090
1091 return len;
1092 }
1093
1094 static IIO_DEVICE_ATTR(DAC_internal_Vref, 0644,
1095 adt7316_show_DAC_internal_Vref,
1096 adt7316_store_DAC_internal_Vref,
1097 0);
1098
adt7316_show_ad(struct adt7316_chip_info * chip,int channel,char * buf)1099 static ssize_t adt7316_show_ad(struct adt7316_chip_info *chip,
1100 int channel, char *buf)
1101 {
1102 u16 data;
1103 u8 msb, lsb;
1104 char sign = ' ';
1105 int ret;
1106
1107 if ((chip->config2 & ADT7316_AD_SINGLE_CH_MODE) &&
1108 channel != (chip->config2 & ADT7516_AD_SINGLE_CH_MASK))
1109 return -EPERM;
1110
1111 switch (channel) {
1112 case ADT7316_AD_SINGLE_CH_IN:
1113 ret = chip->bus.read(chip->bus.client,
1114 ADT7316_LSB_IN_TEMP_VDD, &lsb);
1115 if (ret)
1116 return -EIO;
1117
1118 ret = chip->bus.read(chip->bus.client,
1119 ADT7316_AD_MSB_DATA_BASE + channel, &msb);
1120 if (ret)
1121 return -EIO;
1122
1123 data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
1124 data |= lsb & ADT7316_LSB_IN_TEMP_MASK;
1125 break;
1126 case ADT7316_AD_SINGLE_CH_VDD:
1127 ret = chip->bus.read(chip->bus.client,
1128 ADT7316_LSB_IN_TEMP_VDD, &lsb);
1129 if (ret)
1130 return -EIO;
1131
1132 ret = chip->bus.read(chip->bus.client,
1133
1134 ADT7316_AD_MSB_DATA_BASE + channel, &msb);
1135 if (ret)
1136 return -EIO;
1137
1138 data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
1139 data |= (lsb & ADT7316_LSB_VDD_MASK) >> ADT7316_LSB_VDD_OFFSET;
1140 return sprintf(buf, "%d\n", data);
1141 default: /* ex_temp and ain */
1142 ret = chip->bus.read(chip->bus.client,
1143 ADT7316_LSB_EX_TEMP_AIN, &lsb);
1144 if (ret)
1145 return -EIO;
1146
1147 ret = chip->bus.read(chip->bus.client,
1148 ADT7316_AD_MSB_DATA_BASE + channel, &msb);
1149 if (ret)
1150 return -EIO;
1151
1152 data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
1153 data |= lsb & (ADT7316_LSB_EX_TEMP_MASK <<
1154 (ADT7516_LSB_AIN_SHIFT * (channel -
1155 (ADT7316_MSB_EX_TEMP - ADT7316_AD_MSB_DATA_BASE))));
1156
1157 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
1158 return sprintf(buf, "%d\n", data);
1159
1160 break;
1161 }
1162
1163 if (data & ADT7316_T_VALUE_SIGN) {
1164 /* convert supplement to positive value */
1165 data = (ADT7316_T_VALUE_SIGN << 1) - data;
1166 sign = '-';
1167 }
1168
1169 return sprintf(buf, "%c%d.%.2d\n", sign,
1170 (data >> ADT7316_T_VALUE_FLOAT_OFFSET),
1171 (data & ADT7316_T_VALUE_FLOAT_MASK) * 25);
1172 }
1173
adt7316_show_VDD(struct device * dev,struct device_attribute * attr,char * buf)1174 static ssize_t adt7316_show_VDD(struct device *dev,
1175 struct device_attribute *attr,
1176 char *buf)
1177 {
1178 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1179 struct adt7316_chip_info *chip = iio_priv(dev_info);
1180
1181 return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_VDD, buf);
1182 }
1183 static IIO_DEVICE_ATTR(VDD, 0444, adt7316_show_VDD, NULL, 0);
1184
adt7316_show_in_temp(struct device * dev,struct device_attribute * attr,char * buf)1185 static ssize_t adt7316_show_in_temp(struct device *dev,
1186 struct device_attribute *attr,
1187 char *buf)
1188 {
1189 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1190 struct adt7316_chip_info *chip = iio_priv(dev_info);
1191
1192 return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_IN, buf);
1193 }
1194
1195 static IIO_DEVICE_ATTR(in_temp, 0444, adt7316_show_in_temp, NULL, 0);
1196
adt7316_show_ex_temp_AIN1(struct device * dev,struct device_attribute * attr,char * buf)1197 static ssize_t adt7316_show_ex_temp_AIN1(struct device *dev,
1198 struct device_attribute *attr,
1199 char *buf)
1200 {
1201 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1202 struct adt7316_chip_info *chip = iio_priv(dev_info);
1203
1204 return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_EX, buf);
1205 }
1206
1207 static IIO_DEVICE_ATTR(ex_temp_AIN1, 0444, adt7316_show_ex_temp_AIN1,
1208 NULL, 0);
1209 static IIO_DEVICE_ATTR(ex_temp, 0444, adt7316_show_ex_temp_AIN1, NULL, 0);
1210
adt7316_show_AIN2(struct device * dev,struct device_attribute * attr,char * buf)1211 static ssize_t adt7316_show_AIN2(struct device *dev,
1212 struct device_attribute *attr,
1213 char *buf)
1214 {
1215 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1216 struct adt7316_chip_info *chip = iio_priv(dev_info);
1217
1218 return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN2, buf);
1219 }
1220 static IIO_DEVICE_ATTR(AIN2, 0444, adt7316_show_AIN2, NULL, 0);
1221
adt7316_show_AIN3(struct device * dev,struct device_attribute * attr,char * buf)1222 static ssize_t adt7316_show_AIN3(struct device *dev,
1223 struct device_attribute *attr,
1224 char *buf)
1225 {
1226 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1227 struct adt7316_chip_info *chip = iio_priv(dev_info);
1228
1229 return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN3, buf);
1230 }
1231 static IIO_DEVICE_ATTR(AIN3, 0444, adt7316_show_AIN3, NULL, 0);
1232
adt7316_show_AIN4(struct device * dev,struct device_attribute * attr,char * buf)1233 static ssize_t adt7316_show_AIN4(struct device *dev,
1234 struct device_attribute *attr,
1235 char *buf)
1236 {
1237 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1238 struct adt7316_chip_info *chip = iio_priv(dev_info);
1239
1240 return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN4, buf);
1241 }
1242 static IIO_DEVICE_ATTR(AIN4, 0444, adt7316_show_AIN4, NULL, 0);
1243
adt7316_show_temp_offset(struct adt7316_chip_info * chip,int offset_addr,char * buf)1244 static ssize_t adt7316_show_temp_offset(struct adt7316_chip_info *chip,
1245 int offset_addr, char *buf)
1246 {
1247 int data;
1248 u8 val;
1249 int ret;
1250
1251 ret = chip->bus.read(chip->bus.client, offset_addr, &val);
1252 if (ret)
1253 return -EIO;
1254
1255 data = (int)val;
1256 if (val & 0x80)
1257 data -= 256;
1258
1259 return sprintf(buf, "%d\n", data);
1260 }
1261
adt7316_store_temp_offset(struct adt7316_chip_info * chip,int offset_addr,const char * buf,size_t len)1262 static ssize_t adt7316_store_temp_offset(struct adt7316_chip_info *chip,
1263 int offset_addr,
1264 const char *buf,
1265 size_t len)
1266 {
1267 int data;
1268 u8 val;
1269 int ret;
1270
1271 ret = kstrtoint(buf, 10, &data);
1272 if (ret || data > 127 || data < -128)
1273 return -EINVAL;
1274
1275 if (data < 0)
1276 data += 256;
1277
1278 val = (u8)data;
1279
1280 ret = chip->bus.write(chip->bus.client, offset_addr, val);
1281 if (ret)
1282 return -EIO;
1283
1284 return len;
1285 }
1286
adt7316_show_in_temp_offset(struct device * dev,struct device_attribute * attr,char * buf)1287 static ssize_t adt7316_show_in_temp_offset(struct device *dev,
1288 struct device_attribute *attr,
1289 char *buf)
1290 {
1291 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1292 struct adt7316_chip_info *chip = iio_priv(dev_info);
1293
1294 return adt7316_show_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf);
1295 }
1296
adt7316_store_in_temp_offset(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1297 static ssize_t adt7316_store_in_temp_offset(struct device *dev,
1298 struct device_attribute *attr,
1299 const char *buf,
1300 size_t len)
1301 {
1302 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1303 struct adt7316_chip_info *chip = iio_priv(dev_info);
1304
1305 return adt7316_store_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf,
1306 len);
1307 }
1308
1309 static IIO_DEVICE_ATTR(in_temp_offset, 0644,
1310 adt7316_show_in_temp_offset,
1311 adt7316_store_in_temp_offset, 0);
1312
adt7316_show_ex_temp_offset(struct device * dev,struct device_attribute * attr,char * buf)1313 static ssize_t adt7316_show_ex_temp_offset(struct device *dev,
1314 struct device_attribute *attr,
1315 char *buf)
1316 {
1317 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1318 struct adt7316_chip_info *chip = iio_priv(dev_info);
1319
1320 return adt7316_show_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf);
1321 }
1322
adt7316_store_ex_temp_offset(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1323 static ssize_t adt7316_store_ex_temp_offset(struct device *dev,
1324 struct device_attribute *attr,
1325 const char *buf,
1326 size_t len)
1327 {
1328 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1329 struct adt7316_chip_info *chip = iio_priv(dev_info);
1330
1331 return adt7316_store_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf,
1332 len);
1333 }
1334
1335 static IIO_DEVICE_ATTR(ex_temp_offset, 0644,
1336 adt7316_show_ex_temp_offset,
1337 adt7316_store_ex_temp_offset, 0);
1338
adt7316_show_in_analog_temp_offset(struct device * dev,struct device_attribute * attr,char * buf)1339 static ssize_t adt7316_show_in_analog_temp_offset(struct device *dev,
1340 struct device_attribute *attr,
1341 char *buf)
1342 {
1343 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1344 struct adt7316_chip_info *chip = iio_priv(dev_info);
1345
1346 return adt7316_show_temp_offset(chip,
1347 ADT7316_IN_ANALOG_TEMP_OFFSET, buf);
1348 }
1349
adt7316_store_in_analog_temp_offset(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1350 static ssize_t adt7316_store_in_analog_temp_offset(struct device *dev,
1351 struct device_attribute *attr,
1352 const char *buf,
1353 size_t len)
1354 {
1355 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1356 struct adt7316_chip_info *chip = iio_priv(dev_info);
1357
1358 return adt7316_store_temp_offset(chip,
1359 ADT7316_IN_ANALOG_TEMP_OFFSET, buf, len);
1360 }
1361
1362 static IIO_DEVICE_ATTR(in_analog_temp_offset, 0644,
1363 adt7316_show_in_analog_temp_offset,
1364 adt7316_store_in_analog_temp_offset, 0);
1365
adt7316_show_ex_analog_temp_offset(struct device * dev,struct device_attribute * attr,char * buf)1366 static ssize_t adt7316_show_ex_analog_temp_offset(struct device *dev,
1367 struct device_attribute *attr,
1368 char *buf)
1369 {
1370 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1371 struct adt7316_chip_info *chip = iio_priv(dev_info);
1372
1373 return adt7316_show_temp_offset(chip,
1374 ADT7316_EX_ANALOG_TEMP_OFFSET, buf);
1375 }
1376
adt7316_store_ex_analog_temp_offset(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1377 static ssize_t adt7316_store_ex_analog_temp_offset(struct device *dev,
1378 struct device_attribute *attr,
1379 const char *buf,
1380 size_t len)
1381 {
1382 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1383 struct adt7316_chip_info *chip = iio_priv(dev_info);
1384
1385 return adt7316_store_temp_offset(chip,
1386 ADT7316_EX_ANALOG_TEMP_OFFSET, buf, len);
1387 }
1388
1389 static IIO_DEVICE_ATTR(ex_analog_temp_offset, 0644,
1390 adt7316_show_ex_analog_temp_offset,
1391 adt7316_store_ex_analog_temp_offset, 0);
1392
adt7316_show_DAC(struct adt7316_chip_info * chip,int channel,char * buf)1393 static ssize_t adt7316_show_DAC(struct adt7316_chip_info *chip,
1394 int channel, char *buf)
1395 {
1396 u16 data = 0;
1397 u8 msb, lsb, offset;
1398 int ret;
1399
1400 if (channel >= ADT7316_DA_MSB_DATA_REGS ||
1401 (channel == 0 &&
1402 (chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA)) ||
1403 (channel == 1 &&
1404 (chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB)))
1405 return -EPERM;
1406
1407 offset = chip->dac_bits - 8;
1408
1409 if (chip->dac_bits > 8) {
1410 ret = chip->bus.read(chip->bus.client,
1411 ADT7316_DA_DATA_BASE + channel * 2, &lsb);
1412 if (ret)
1413 return -EIO;
1414 }
1415
1416 ret = chip->bus.read(chip->bus.client,
1417 ADT7316_DA_DATA_BASE + 1 + channel * 2, &msb);
1418 if (ret)
1419 return -EIO;
1420
1421 if (chip->dac_bits == 12)
1422 data = lsb >> ADT7316_DA_12_BIT_LSB_SHIFT;
1423 else if (chip->dac_bits == 10)
1424 data = lsb >> ADT7316_DA_10_BIT_LSB_SHIFT;
1425 data |= msb << offset;
1426
1427 return sprintf(buf, "%d\n", data);
1428 }
1429
adt7316_store_DAC(struct adt7316_chip_info * chip,int channel,const char * buf,size_t len)1430 static ssize_t adt7316_store_DAC(struct adt7316_chip_info *chip,
1431 int channel, const char *buf, size_t len)
1432 {
1433 u8 msb, lsb, lsb_reg, offset;
1434 u16 data;
1435 int ret;
1436
1437 if (channel >= ADT7316_DA_MSB_DATA_REGS ||
1438 (channel == 0 &&
1439 (chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA)) ||
1440 (channel == 1 &&
1441 (chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB)))
1442 return -EPERM;
1443
1444 offset = chip->dac_bits - 8;
1445
1446 ret = kstrtou16(buf, 10, &data);
1447 if (ret || data >= (1 << chip->dac_bits))
1448 return -EINVAL;
1449
1450 if (chip->dac_bits > 8) {
1451 lsb = data & ((1 << offset) - 1);
1452 if (chip->dac_bits == 12)
1453 lsb_reg = lsb << ADT7316_DA_12_BIT_LSB_SHIFT;
1454 else
1455 lsb_reg = lsb << ADT7316_DA_10_BIT_LSB_SHIFT;
1456 ret = chip->bus.write(chip->bus.client,
1457 ADT7316_DA_DATA_BASE + channel * 2, lsb_reg);
1458 if (ret)
1459 return -EIO;
1460 }
1461
1462 msb = data >> offset;
1463 ret = chip->bus.write(chip->bus.client,
1464 ADT7316_DA_DATA_BASE + 1 + channel * 2, msb);
1465 if (ret)
1466 return -EIO;
1467
1468 return len;
1469 }
1470
adt7316_show_DAC_A(struct device * dev,struct device_attribute * attr,char * buf)1471 static ssize_t adt7316_show_DAC_A(struct device *dev,
1472 struct device_attribute *attr,
1473 char *buf)
1474 {
1475 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1476 struct adt7316_chip_info *chip = iio_priv(dev_info);
1477
1478 return adt7316_show_DAC(chip, 0, buf);
1479 }
1480
adt7316_store_DAC_A(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1481 static ssize_t adt7316_store_DAC_A(struct device *dev,
1482 struct device_attribute *attr,
1483 const char *buf,
1484 size_t len)
1485 {
1486 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1487 struct adt7316_chip_info *chip = iio_priv(dev_info);
1488
1489 return adt7316_store_DAC(chip, 0, buf, len);
1490 }
1491
1492 static IIO_DEVICE_ATTR(DAC_A, 0644, adt7316_show_DAC_A,
1493 adt7316_store_DAC_A, 0);
1494
adt7316_show_DAC_B(struct device * dev,struct device_attribute * attr,char * buf)1495 static ssize_t adt7316_show_DAC_B(struct device *dev,
1496 struct device_attribute *attr,
1497 char *buf)
1498 {
1499 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1500 struct adt7316_chip_info *chip = iio_priv(dev_info);
1501
1502 return adt7316_show_DAC(chip, 1, buf);
1503 }
1504
adt7316_store_DAC_B(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1505 static ssize_t adt7316_store_DAC_B(struct device *dev,
1506 struct device_attribute *attr,
1507 const char *buf,
1508 size_t len)
1509 {
1510 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1511 struct adt7316_chip_info *chip = iio_priv(dev_info);
1512
1513 return adt7316_store_DAC(chip, 1, buf, len);
1514 }
1515
1516 static IIO_DEVICE_ATTR(DAC_B, 0644, adt7316_show_DAC_B,
1517 adt7316_store_DAC_B, 0);
1518
adt7316_show_DAC_C(struct device * dev,struct device_attribute * attr,char * buf)1519 static ssize_t adt7316_show_DAC_C(struct device *dev,
1520 struct device_attribute *attr,
1521 char *buf)
1522 {
1523 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1524 struct adt7316_chip_info *chip = iio_priv(dev_info);
1525
1526 return adt7316_show_DAC(chip, 2, buf);
1527 }
1528
adt7316_store_DAC_C(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1529 static ssize_t adt7316_store_DAC_C(struct device *dev,
1530 struct device_attribute *attr,
1531 const char *buf,
1532 size_t len)
1533 {
1534 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1535 struct adt7316_chip_info *chip = iio_priv(dev_info);
1536
1537 return adt7316_store_DAC(chip, 2, buf, len);
1538 }
1539
1540 static IIO_DEVICE_ATTR(DAC_C, 0644, adt7316_show_DAC_C,
1541 adt7316_store_DAC_C, 0);
1542
adt7316_show_DAC_D(struct device * dev,struct device_attribute * attr,char * buf)1543 static ssize_t adt7316_show_DAC_D(struct device *dev,
1544 struct device_attribute *attr,
1545 char *buf)
1546 {
1547 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1548 struct adt7316_chip_info *chip = iio_priv(dev_info);
1549
1550 return adt7316_show_DAC(chip, 3, buf);
1551 }
1552
adt7316_store_DAC_D(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1553 static ssize_t adt7316_store_DAC_D(struct device *dev,
1554 struct device_attribute *attr,
1555 const char *buf,
1556 size_t len)
1557 {
1558 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1559 struct adt7316_chip_info *chip = iio_priv(dev_info);
1560
1561 return adt7316_store_DAC(chip, 3, buf, len);
1562 }
1563
1564 static IIO_DEVICE_ATTR(DAC_D, 0644, adt7316_show_DAC_D,
1565 adt7316_store_DAC_D, 0);
1566
adt7316_show_device_id(struct device * dev,struct device_attribute * attr,char * buf)1567 static ssize_t adt7316_show_device_id(struct device *dev,
1568 struct device_attribute *attr,
1569 char *buf)
1570 {
1571 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1572 struct adt7316_chip_info *chip = iio_priv(dev_info);
1573 u8 id;
1574 int ret;
1575
1576 ret = chip->bus.read(chip->bus.client, ADT7316_DEVICE_ID, &id);
1577 if (ret)
1578 return -EIO;
1579
1580 return sprintf(buf, "%d\n", id);
1581 }
1582
1583 static IIO_DEVICE_ATTR(device_id, 0444, adt7316_show_device_id, NULL, 0);
1584
adt7316_show_manufactorer_id(struct device * dev,struct device_attribute * attr,char * buf)1585 static ssize_t adt7316_show_manufactorer_id(struct device *dev,
1586 struct device_attribute *attr,
1587 char *buf)
1588 {
1589 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1590 struct adt7316_chip_info *chip = iio_priv(dev_info);
1591 u8 id;
1592 int ret;
1593
1594 ret = chip->bus.read(chip->bus.client, ADT7316_MANUFACTURE_ID, &id);
1595 if (ret)
1596 return -EIO;
1597
1598 return sprintf(buf, "%d\n", id);
1599 }
1600
1601 static IIO_DEVICE_ATTR(manufactorer_id, 0444,
1602 adt7316_show_manufactorer_id, NULL, 0);
1603
adt7316_show_device_rev(struct device * dev,struct device_attribute * attr,char * buf)1604 static ssize_t adt7316_show_device_rev(struct device *dev,
1605 struct device_attribute *attr,
1606 char *buf)
1607 {
1608 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1609 struct adt7316_chip_info *chip = iio_priv(dev_info);
1610 u8 rev;
1611 int ret;
1612
1613 ret = chip->bus.read(chip->bus.client, ADT7316_DEVICE_REV, &rev);
1614 if (ret)
1615 return -EIO;
1616
1617 return sprintf(buf, "%d\n", rev);
1618 }
1619
1620 static IIO_DEVICE_ATTR(device_rev, 0444, adt7316_show_device_rev, NULL, 0);
1621
adt7316_show_bus_type(struct device * dev,struct device_attribute * attr,char * buf)1622 static ssize_t adt7316_show_bus_type(struct device *dev,
1623 struct device_attribute *attr,
1624 char *buf)
1625 {
1626 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1627 struct adt7316_chip_info *chip = iio_priv(dev_info);
1628 u8 stat;
1629 int ret;
1630
1631 ret = chip->bus.read(chip->bus.client, ADT7316_SPI_LOCK_STAT, &stat);
1632 if (ret)
1633 return -EIO;
1634
1635 if (stat)
1636 return sprintf(buf, "spi\n");
1637
1638 return sprintf(buf, "i2c\n");
1639 }
1640
1641 static IIO_DEVICE_ATTR(bus_type, 0444, adt7316_show_bus_type, NULL, 0);
1642
1643 static struct attribute *adt7316_attributes[] = {
1644 &iio_dev_attr_all_modes.dev_attr.attr,
1645 &iio_dev_attr_mode.dev_attr.attr,
1646 &iio_dev_attr_enabled.dev_attr.attr,
1647 &iio_dev_attr_ad_channel.dev_attr.attr,
1648 &iio_dev_attr_all_ad_channels.dev_attr.attr,
1649 &iio_dev_attr_disable_averaging.dev_attr.attr,
1650 &iio_dev_attr_enable_smbus_timeout.dev_attr.attr,
1651 &iio_dev_attr_powerdown.dev_attr.attr,
1652 &iio_dev_attr_fast_ad_clock.dev_attr.attr,
1653 &iio_dev_attr_da_high_resolution.dev_attr.attr,
1654 &iio_dev_attr_enable_proportion_DACA.dev_attr.attr,
1655 &iio_dev_attr_enable_proportion_DACB.dev_attr.attr,
1656 &iio_dev_attr_DAC_2Vref_channels_mask.dev_attr.attr,
1657 &iio_dev_attr_DAC_update_mode.dev_attr.attr,
1658 &iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
1659 &iio_dev_attr_update_DAC.dev_attr.attr,
1660 &iio_dev_attr_DA_AB_Vref_bypass.dev_attr.attr,
1661 &iio_dev_attr_DA_CD_Vref_bypass.dev_attr.attr,
1662 &iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
1663 &iio_dev_attr_VDD.dev_attr.attr,
1664 &iio_dev_attr_in_temp.dev_attr.attr,
1665 &iio_dev_attr_ex_temp.dev_attr.attr,
1666 &iio_dev_attr_in_temp_offset.dev_attr.attr,
1667 &iio_dev_attr_ex_temp_offset.dev_attr.attr,
1668 &iio_dev_attr_in_analog_temp_offset.dev_attr.attr,
1669 &iio_dev_attr_ex_analog_temp_offset.dev_attr.attr,
1670 &iio_dev_attr_DAC_A.dev_attr.attr,
1671 &iio_dev_attr_DAC_B.dev_attr.attr,
1672 &iio_dev_attr_DAC_C.dev_attr.attr,
1673 &iio_dev_attr_DAC_D.dev_attr.attr,
1674 &iio_dev_attr_device_id.dev_attr.attr,
1675 &iio_dev_attr_manufactorer_id.dev_attr.attr,
1676 &iio_dev_attr_device_rev.dev_attr.attr,
1677 &iio_dev_attr_bus_type.dev_attr.attr,
1678 NULL,
1679 };
1680
1681 static const struct attribute_group adt7316_attribute_group = {
1682 .attrs = adt7316_attributes,
1683 };
1684
1685 static struct attribute *adt7516_attributes[] = {
1686 &iio_dev_attr_all_modes.dev_attr.attr,
1687 &iio_dev_attr_mode.dev_attr.attr,
1688 &iio_dev_attr_select_ex_temp.dev_attr.attr,
1689 &iio_dev_attr_enabled.dev_attr.attr,
1690 &iio_dev_attr_ad_channel.dev_attr.attr,
1691 &iio_dev_attr_all_ad_channels.dev_attr.attr,
1692 &iio_dev_attr_disable_averaging.dev_attr.attr,
1693 &iio_dev_attr_enable_smbus_timeout.dev_attr.attr,
1694 &iio_dev_attr_powerdown.dev_attr.attr,
1695 &iio_dev_attr_fast_ad_clock.dev_attr.attr,
1696 &iio_dev_attr_AIN_internal_Vref.dev_attr.attr,
1697 &iio_dev_attr_da_high_resolution.dev_attr.attr,
1698 &iio_dev_attr_enable_proportion_DACA.dev_attr.attr,
1699 &iio_dev_attr_enable_proportion_DACB.dev_attr.attr,
1700 &iio_dev_attr_DAC_2Vref_channels_mask.dev_attr.attr,
1701 &iio_dev_attr_DAC_update_mode.dev_attr.attr,
1702 &iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
1703 &iio_dev_attr_update_DAC.dev_attr.attr,
1704 &iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
1705 &iio_dev_attr_VDD.dev_attr.attr,
1706 &iio_dev_attr_in_temp.dev_attr.attr,
1707 &iio_dev_attr_ex_temp_AIN1.dev_attr.attr,
1708 &iio_dev_attr_AIN2.dev_attr.attr,
1709 &iio_dev_attr_AIN3.dev_attr.attr,
1710 &iio_dev_attr_AIN4.dev_attr.attr,
1711 &iio_dev_attr_in_temp_offset.dev_attr.attr,
1712 &iio_dev_attr_ex_temp_offset.dev_attr.attr,
1713 &iio_dev_attr_in_analog_temp_offset.dev_attr.attr,
1714 &iio_dev_attr_ex_analog_temp_offset.dev_attr.attr,
1715 &iio_dev_attr_DAC_A.dev_attr.attr,
1716 &iio_dev_attr_DAC_B.dev_attr.attr,
1717 &iio_dev_attr_DAC_C.dev_attr.attr,
1718 &iio_dev_attr_DAC_D.dev_attr.attr,
1719 &iio_dev_attr_device_id.dev_attr.attr,
1720 &iio_dev_attr_manufactorer_id.dev_attr.attr,
1721 &iio_dev_attr_device_rev.dev_attr.attr,
1722 &iio_dev_attr_bus_type.dev_attr.attr,
1723 NULL,
1724 };
1725
1726 static const struct attribute_group adt7516_attribute_group = {
1727 .attrs = adt7516_attributes,
1728 };
1729
adt7316_event_handler(int irq,void * private)1730 static irqreturn_t adt7316_event_handler(int irq, void *private)
1731 {
1732 struct iio_dev *indio_dev = private;
1733 struct adt7316_chip_info *chip = iio_priv(indio_dev);
1734 u8 stat1, stat2;
1735 int ret;
1736 s64 time;
1737
1738 ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT1, &stat1);
1739 if (!ret) {
1740 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
1741 stat1 &= 0x1F;
1742
1743 time = iio_get_time_ns(indio_dev);
1744 if (stat1 & BIT(0))
1745 iio_push_event(indio_dev,
1746 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
1747 IIO_EV_TYPE_THRESH,
1748 IIO_EV_DIR_RISING),
1749 time);
1750 if (stat1 & BIT(1))
1751 iio_push_event(indio_dev,
1752 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
1753 IIO_EV_TYPE_THRESH,
1754 IIO_EV_DIR_FALLING),
1755 time);
1756 if (stat1 & BIT(2))
1757 iio_push_event(indio_dev,
1758 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 1,
1759 IIO_EV_TYPE_THRESH,
1760 IIO_EV_DIR_RISING),
1761 time);
1762 if (stat1 & BIT(3))
1763 iio_push_event(indio_dev,
1764 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 1,
1765 IIO_EV_TYPE_THRESH,
1766 IIO_EV_DIR_FALLING),
1767 time);
1768 if (stat1 & BIT(5))
1769 iio_push_event(indio_dev,
1770 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 1,
1771 IIO_EV_TYPE_THRESH,
1772 IIO_EV_DIR_EITHER),
1773 time);
1774 if (stat1 & BIT(6))
1775 iio_push_event(indio_dev,
1776 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 2,
1777 IIO_EV_TYPE_THRESH,
1778 IIO_EV_DIR_EITHER),
1779 time);
1780 if (stat1 & BIT(7))
1781 iio_push_event(indio_dev,
1782 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 3,
1783 IIO_EV_TYPE_THRESH,
1784 IIO_EV_DIR_EITHER),
1785 time);
1786 }
1787 ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT2, &stat2);
1788 if (!ret) {
1789 if (stat2 & ADT7316_INT_MASK2_VDD)
1790 iio_push_event(indio_dev,
1791 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE,
1792 0,
1793 IIO_EV_TYPE_THRESH,
1794 IIO_EV_DIR_RISING),
1795 iio_get_time_ns(indio_dev));
1796 }
1797
1798 return IRQ_HANDLED;
1799 }
1800
adt7316_setup_irq(struct iio_dev * indio_dev)1801 static int adt7316_setup_irq(struct iio_dev *indio_dev)
1802 {
1803 struct adt7316_chip_info *chip = iio_priv(indio_dev);
1804 int irq_type, ret;
1805
1806 irq_type = irqd_get_trigger_type(irq_get_irq_data(chip->bus.irq));
1807
1808 switch (irq_type) {
1809 case IRQF_TRIGGER_HIGH:
1810 case IRQF_TRIGGER_RISING:
1811 break;
1812 case IRQF_TRIGGER_LOW:
1813 case IRQF_TRIGGER_FALLING:
1814 break;
1815 default:
1816 dev_info(&indio_dev->dev, "mode %d unsupported, using IRQF_TRIGGER_LOW\n",
1817 irq_type);
1818 irq_type = IRQF_TRIGGER_LOW;
1819 break;
1820 }
1821
1822 ret = devm_request_threaded_irq(&indio_dev->dev, chip->bus.irq,
1823 NULL, adt7316_event_handler,
1824 irq_type | IRQF_ONESHOT,
1825 indio_dev->name, indio_dev);
1826 if (ret) {
1827 dev_err(&indio_dev->dev, "failed to request irq %d\n",
1828 chip->bus.irq);
1829 return ret;
1830 }
1831
1832 if (irq_type & IRQF_TRIGGER_HIGH)
1833 chip->config1 |= ADT7316_INT_POLARITY;
1834
1835 return 0;
1836 }
1837
1838 /*
1839 * Show mask of enabled interrupts in Hex.
1840 */
adt7316_show_int_mask(struct device * dev,struct device_attribute * attr,char * buf)1841 static ssize_t adt7316_show_int_mask(struct device *dev,
1842 struct device_attribute *attr,
1843 char *buf)
1844 {
1845 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1846 struct adt7316_chip_info *chip = iio_priv(dev_info);
1847
1848 return sprintf(buf, "0x%x\n", chip->int_mask);
1849 }
1850
1851 /*
1852 * Set 1 to the mask in Hex to enabled interrupts.
1853 */
adt7316_set_int_mask(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1854 static ssize_t adt7316_set_int_mask(struct device *dev,
1855 struct device_attribute *attr,
1856 const char *buf,
1857 size_t len)
1858 {
1859 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1860 struct adt7316_chip_info *chip = iio_priv(dev_info);
1861 u16 data;
1862 int ret;
1863 u8 mask;
1864
1865 ret = kstrtou16(buf, 16, &data);
1866 if (ret || data >= ADT7316_VDD_INT_MASK + 1)
1867 return -EINVAL;
1868
1869 if (data & ADT7316_VDD_INT_MASK)
1870 mask = 0; /* enable vdd int */
1871 else
1872 mask = ADT7316_INT_MASK2_VDD; /* disable vdd int */
1873
1874 ret = chip->bus.write(chip->bus.client, ADT7316_INT_MASK2, mask);
1875 if (!ret) {
1876 chip->int_mask &= ~ADT7316_VDD_INT_MASK;
1877 chip->int_mask |= data & ADT7316_VDD_INT_MASK;
1878 }
1879
1880 if (data & ADT7316_TEMP_AIN_INT_MASK) {
1881 if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX)
1882 /* mask in reg is opposite, set 1 to disable */
1883 mask = (~data) & ADT7316_TEMP_INT_MASK;
1884 else
1885 /* mask in reg is opposite, set 1 to disable */
1886 mask = (~data) & ADT7316_TEMP_AIN_INT_MASK;
1887 }
1888 ret = chip->bus.write(chip->bus.client, ADT7316_INT_MASK1, mask);
1889
1890 chip->int_mask = mask;
1891
1892 return len;
1893 }
1894
adt7316_show_ad_bound(struct device * dev,struct device_attribute * attr,char * buf)1895 static inline ssize_t adt7316_show_ad_bound(struct device *dev,
1896 struct device_attribute *attr,
1897 char *buf)
1898 {
1899 struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
1900 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1901 struct adt7316_chip_info *chip = iio_priv(dev_info);
1902 u8 val;
1903 int data;
1904 int ret;
1905
1906 if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
1907 this_attr->address > ADT7316_EX_TEMP_LOW)
1908 return -EPERM;
1909
1910 ret = chip->bus.read(chip->bus.client, this_attr->address, &val);
1911 if (ret)
1912 return -EIO;
1913
1914 data = (int)val;
1915
1916 if (!((chip->id & ID_FAMILY_MASK) == ID_ADT75XX &&
1917 (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)) {
1918 if (data & 0x80)
1919 data -= 256;
1920 }
1921
1922 return sprintf(buf, "%d\n", data);
1923 }
1924
adt7316_set_ad_bound(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1925 static inline ssize_t adt7316_set_ad_bound(struct device *dev,
1926 struct device_attribute *attr,
1927 const char *buf,
1928 size_t len)
1929 {
1930 struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
1931 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1932 struct adt7316_chip_info *chip = iio_priv(dev_info);
1933 int data;
1934 u8 val;
1935 int ret;
1936
1937 if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
1938 this_attr->address > ADT7316_EX_TEMP_LOW)
1939 return -EPERM;
1940
1941 ret = kstrtoint(buf, 10, &data);
1942 if (ret)
1943 return -EINVAL;
1944
1945 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX &&
1946 (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0) {
1947 if (data > 255 || data < 0)
1948 return -EINVAL;
1949 } else {
1950 if (data > 127 || data < -128)
1951 return -EINVAL;
1952
1953 if (data < 0)
1954 data += 256;
1955 }
1956
1957 val = (u8)data;
1958
1959 ret = chip->bus.write(chip->bus.client, this_attr->address, val);
1960 if (ret)
1961 return -EIO;
1962
1963 return len;
1964 }
1965
adt7316_show_int_enabled(struct device * dev,struct device_attribute * attr,char * buf)1966 static ssize_t adt7316_show_int_enabled(struct device *dev,
1967 struct device_attribute *attr,
1968 char *buf)
1969 {
1970 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1971 struct adt7316_chip_info *chip = iio_priv(dev_info);
1972
1973 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_INT_EN));
1974 }
1975
adt7316_set_int_enabled(struct device * dev,struct device_attribute * attr,const char * buf,size_t len)1976 static ssize_t adt7316_set_int_enabled(struct device *dev,
1977 struct device_attribute *attr,
1978 const char *buf,
1979 size_t len)
1980 {
1981 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1982 struct adt7316_chip_info *chip = iio_priv(dev_info);
1983 u8 config1;
1984 int ret;
1985
1986 config1 = chip->config1 & (~ADT7316_INT_EN);
1987 if (buf[0] == '1')
1988 config1 |= ADT7316_INT_EN;
1989
1990 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
1991 if (ret)
1992 return -EIO;
1993
1994 chip->config1 = config1;
1995
1996 return len;
1997 }
1998
1999 static IIO_DEVICE_ATTR(int_mask,
2000 0644,
2001 adt7316_show_int_mask, adt7316_set_int_mask,
2002 0);
2003 static IIO_DEVICE_ATTR(in_temp_high_value,
2004 0644,
2005 adt7316_show_ad_bound, adt7316_set_ad_bound,
2006 ADT7316_IN_TEMP_HIGH);
2007 static IIO_DEVICE_ATTR(in_temp_low_value,
2008 0644,
2009 adt7316_show_ad_bound, adt7316_set_ad_bound,
2010 ADT7316_IN_TEMP_LOW);
2011 static IIO_DEVICE_ATTR(ex_temp_high_value,
2012 0644,
2013 adt7316_show_ad_bound, adt7316_set_ad_bound,
2014 ADT7316_EX_TEMP_HIGH);
2015 static IIO_DEVICE_ATTR(ex_temp_low_value,
2016 0644,
2017 adt7316_show_ad_bound, adt7316_set_ad_bound,
2018 ADT7316_EX_TEMP_LOW);
2019
2020 /* NASTY duplication to be fixed */
2021 static IIO_DEVICE_ATTR(ex_temp_ain1_high_value,
2022 0644,
2023 adt7316_show_ad_bound, adt7316_set_ad_bound,
2024 ADT7316_EX_TEMP_HIGH);
2025 static IIO_DEVICE_ATTR(ex_temp_ain1_low_value,
2026 0644,
2027 adt7316_show_ad_bound, adt7316_set_ad_bound,
2028 ADT7316_EX_TEMP_LOW);
2029 static IIO_DEVICE_ATTR(ain2_high_value,
2030 0644,
2031 adt7316_show_ad_bound, adt7316_set_ad_bound,
2032 ADT7516_AIN2_HIGH);
2033 static IIO_DEVICE_ATTR(ain2_low_value,
2034 0644,
2035 adt7316_show_ad_bound, adt7316_set_ad_bound,
2036 ADT7516_AIN2_LOW);
2037 static IIO_DEVICE_ATTR(ain3_high_value,
2038 0644,
2039 adt7316_show_ad_bound, adt7316_set_ad_bound,
2040 ADT7516_AIN3_HIGH);
2041 static IIO_DEVICE_ATTR(ain3_low_value,
2042 0644,
2043 adt7316_show_ad_bound, adt7316_set_ad_bound,
2044 ADT7516_AIN3_LOW);
2045 static IIO_DEVICE_ATTR(ain4_high_value,
2046 0644,
2047 adt7316_show_ad_bound, adt7316_set_ad_bound,
2048 ADT7516_AIN4_HIGH);
2049 static IIO_DEVICE_ATTR(ain4_low_value,
2050 0644,
2051 adt7316_show_ad_bound, adt7316_set_ad_bound,
2052 ADT7516_AIN4_LOW);
2053 static IIO_DEVICE_ATTR(int_enabled,
2054 0644,
2055 adt7316_show_int_enabled,
2056 adt7316_set_int_enabled, 0);
2057
2058 static struct attribute *adt7316_event_attributes[] = {
2059 &iio_dev_attr_int_mask.dev_attr.attr,
2060 &iio_dev_attr_in_temp_high_value.dev_attr.attr,
2061 &iio_dev_attr_in_temp_low_value.dev_attr.attr,
2062 &iio_dev_attr_ex_temp_high_value.dev_attr.attr,
2063 &iio_dev_attr_ex_temp_low_value.dev_attr.attr,
2064 &iio_dev_attr_int_enabled.dev_attr.attr,
2065 NULL,
2066 };
2067
2068 static const struct attribute_group adt7316_event_attribute_group = {
2069 .attrs = adt7316_event_attributes,
2070 .name = "events",
2071 };
2072
2073 static struct attribute *adt7516_event_attributes[] = {
2074 &iio_dev_attr_int_mask.dev_attr.attr,
2075 &iio_dev_attr_in_temp_high_value.dev_attr.attr,
2076 &iio_dev_attr_in_temp_low_value.dev_attr.attr,
2077 &iio_dev_attr_ex_temp_ain1_high_value.dev_attr.attr,
2078 &iio_dev_attr_ex_temp_ain1_low_value.dev_attr.attr,
2079 &iio_dev_attr_ain2_high_value.dev_attr.attr,
2080 &iio_dev_attr_ain2_low_value.dev_attr.attr,
2081 &iio_dev_attr_ain3_high_value.dev_attr.attr,
2082 &iio_dev_attr_ain3_low_value.dev_attr.attr,
2083 &iio_dev_attr_ain4_high_value.dev_attr.attr,
2084 &iio_dev_attr_ain4_low_value.dev_attr.attr,
2085 &iio_dev_attr_int_enabled.dev_attr.attr,
2086 NULL,
2087 };
2088
2089 static const struct attribute_group adt7516_event_attribute_group = {
2090 .attrs = adt7516_event_attributes,
2091 .name = "events",
2092 };
2093
2094 #ifdef CONFIG_PM_SLEEP
adt7316_disable(struct device * dev)2095 static int adt7316_disable(struct device *dev)
2096 {
2097 struct iio_dev *dev_info = dev_get_drvdata(dev);
2098 struct adt7316_chip_info *chip = iio_priv(dev_info);
2099
2100 return _adt7316_store_enabled(chip, 0);
2101 }
2102
adt7316_enable(struct device * dev)2103 static int adt7316_enable(struct device *dev)
2104 {
2105 struct iio_dev *dev_info = dev_get_drvdata(dev);
2106 struct adt7316_chip_info *chip = iio_priv(dev_info);
2107
2108 return _adt7316_store_enabled(chip, 1);
2109 }
2110 EXPORT_SYMBOL_GPL(adt7316_pm_ops);
2111 SIMPLE_DEV_PM_OPS(adt7316_pm_ops, adt7316_disable, adt7316_enable);
2112 #endif
2113
2114 static const struct iio_info adt7316_info = {
2115 .attrs = &adt7316_attribute_group,
2116 .event_attrs = &adt7316_event_attribute_group,
2117 };
2118
2119 static const struct iio_info adt7516_info = {
2120 .attrs = &adt7516_attribute_group,
2121 .event_attrs = &adt7516_event_attribute_group,
2122 };
2123
2124 /*
2125 * device probe and remove
2126 */
adt7316_probe(struct device * dev,struct adt7316_bus * bus,const char * name)2127 int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
2128 const char *name)
2129 {
2130 struct adt7316_chip_info *chip;
2131 struct iio_dev *indio_dev;
2132 int ret;
2133
2134 indio_dev = devm_iio_device_alloc(dev, sizeof(*chip));
2135 if (!indio_dev)
2136 return -ENOMEM;
2137 chip = iio_priv(indio_dev);
2138 /* this is only used for device removal purposes */
2139 dev_set_drvdata(dev, indio_dev);
2140
2141 chip->bus = *bus;
2142
2143 if (name[4] == '3')
2144 chip->id = ID_ADT7316 + (name[6] - '6');
2145 else if (name[4] == '5')
2146 chip->id = ID_ADT7516 + (name[6] - '6');
2147 else
2148 return -ENODEV;
2149
2150 if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
2151 chip->dac_bits = 12;
2152 else if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
2153 chip->dac_bits = 10;
2154 else
2155 chip->dac_bits = 8;
2156
2157 chip->ldac_pin = devm_gpiod_get_optional(dev, "adi,ldac",
2158 GPIOD_OUT_LOW);
2159 if (IS_ERR(chip->ldac_pin)) {
2160 ret = PTR_ERR(chip->ldac_pin);
2161 dev_err(dev, "Failed to request ldac GPIO: %d\n", ret);
2162 return ret;
2163 }
2164
2165 if (!chip->ldac_pin) {
2166 chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDAC;
2167 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
2168 chip->config1 |= ADT7516_SEL_AIN3;
2169 }
2170 chip->int_mask = ADT7316_TEMP_INT_MASK | ADT7316_VDD_INT_MASK;
2171 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
2172 chip->int_mask |= ADT7516_AIN_INT_MASK;
2173
2174 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
2175 indio_dev->info = &adt7516_info;
2176 else
2177 indio_dev->info = &adt7316_info;
2178 indio_dev->name = name;
2179 indio_dev->modes = INDIO_DIRECT_MODE;
2180
2181 if (chip->bus.irq > 0) {
2182 ret = adt7316_setup_irq(indio_dev);
2183 if (ret)
2184 return ret;
2185 }
2186
2187 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, chip->config1);
2188 if (ret)
2189 return -EIO;
2190
2191 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, chip->config3);
2192 if (ret)
2193 return -EIO;
2194
2195 ret = devm_iio_device_register(dev, indio_dev);
2196 if (ret)
2197 return ret;
2198
2199 dev_info(dev, "%s temperature sensor, ADC and DAC registered.\n",
2200 indio_dev->name);
2201
2202 return 0;
2203 }
2204 EXPORT_SYMBOL(adt7316_probe);
2205
2206 MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
2207 MODULE_DESCRIPTION("Analog Devices ADT7316/7/8 and ADT7516/7/9 digital temperature sensor, ADC and DAC driver");
2208 MODULE_LICENSE("GPL v2");
2209
