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Merge tag 'iio-fixes-for-4.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23...
[deliverable/linux.git] / drivers / staging / iio / addac / adt7316.c
1 /*
2 * ADT7316 digital temperature sensor driver supporting ADT7316/7/8 ADT7516/7/9
3 *
4 *
5 * Copyright 2010 Analog Devices Inc.
6 *
7 * Licensed under the GPL-2 or later.
8 */
9
10 #include <linux/interrupt.h>
11 #include <linux/gpio.h>
12 #include <linux/workqueue.h>
13 #include <linux/device.h>
14 #include <linux/kernel.h>
15 #include <linux/slab.h>
16 #include <linux/sysfs.h>
17 #include <linux/list.h>
18 #include <linux/i2c.h>
19 #include <linux/rtc.h>
20 #include <linux/module.h>
21
22 #include <linux/iio/iio.h>
23 #include <linux/iio/events.h>
24 #include <linux/iio/sysfs.h>
25 #include "adt7316.h"
26
27 /*
28 * ADT7316 registers definition
29 */
30 #define ADT7316_INT_STAT1 0x0
31 #define ADT7316_INT_STAT2 0x1
32 #define ADT7316_LSB_IN_TEMP_VDD 0x3
33 #define ADT7316_LSB_IN_TEMP_MASK 0x3
34 #define ADT7316_LSB_VDD_MASK 0xC
35 #define ADT7316_LSB_VDD_OFFSET 2
36 #define ADT7316_LSB_EX_TEMP_AIN 0x4
37 #define ADT7316_LSB_EX_TEMP_MASK 0x3
38 #define ADT7516_LSB_AIN_SHIFT 2
39 #define ADT7316_AD_MSB_DATA_BASE 0x6
40 #define ADT7316_AD_MSB_DATA_REGS 3
41 #define ADT7516_AD_MSB_DATA_REGS 6
42 #define ADT7316_MSB_VDD 0x6
43 #define ADT7316_MSB_IN_TEMP 0x7
44 #define ADT7316_MSB_EX_TEMP 0x8
45 #define ADT7516_MSB_AIN1 0x8
46 #define ADT7516_MSB_AIN2 0x9
47 #define ADT7516_MSB_AIN3 0xA
48 #define ADT7516_MSB_AIN4 0xB
49 #define ADT7316_DA_DATA_BASE 0x10
50 #define ADT7316_DA_MSB_DATA_REGS 4
51 #define ADT7316_LSB_DAC_A 0x10
52 #define ADT7316_MSB_DAC_A 0x11
53 #define ADT7316_LSB_DAC_B 0x12
54 #define ADT7316_MSB_DAC_B 0x13
55 #define ADT7316_LSB_DAC_C 0x14
56 #define ADT7316_MSB_DAC_C 0x15
57 #define ADT7316_LSB_DAC_D 0x16
58 #define ADT7316_MSB_DAC_D 0x17
59 #define ADT7316_CONFIG1 0x18
60 #define ADT7316_CONFIG2 0x19
61 #define ADT7316_CONFIG3 0x1A
62 #define ADT7316_LDAC_CONFIG 0x1B
63 #define ADT7316_DAC_CONFIG 0x1C
64 #define ADT7316_INT_MASK1 0x1D
65 #define ADT7316_INT_MASK2 0x1E
66 #define ADT7316_IN_TEMP_OFFSET 0x1F
67 #define ADT7316_EX_TEMP_OFFSET 0x20
68 #define ADT7316_IN_ANALOG_TEMP_OFFSET 0x21
69 #define ADT7316_EX_ANALOG_TEMP_OFFSET 0x22
70 #define ADT7316_VDD_HIGH 0x23
71 #define ADT7316_VDD_LOW 0x24
72 #define ADT7316_IN_TEMP_HIGH 0x25
73 #define ADT7316_IN_TEMP_LOW 0x26
74 #define ADT7316_EX_TEMP_HIGH 0x27
75 #define ADT7316_EX_TEMP_LOW 0x28
76 #define ADT7516_AIN2_HIGH 0x2B
77 #define ADT7516_AIN2_LOW 0x2C
78 #define ADT7516_AIN3_HIGH 0x2D
79 #define ADT7516_AIN3_LOW 0x2E
80 #define ADT7516_AIN4_HIGH 0x2F
81 #define ADT7516_AIN4_LOW 0x30
82 #define ADT7316_DEVICE_ID 0x4D
83 #define ADT7316_MANUFACTURE_ID 0x4E
84 #define ADT7316_DEVICE_REV 0x4F
85 #define ADT7316_SPI_LOCK_STAT 0x7F
86
87 /*
88 * ADT7316 config1
89 */
90 #define ADT7316_EN 0x1
91 #define ADT7516_SEL_EX_TEMP 0x4
92 #define ADT7516_SEL_AIN1_2_EX_TEMP_MASK 0x6
93 #define ADT7516_SEL_AIN3 0x8
94 #define ADT7316_INT_EN 0x20
95 #define ADT7316_INT_POLARITY 0x40
96 #define ADT7316_PD 0x80
97
98 /*
99 * ADT7316 config2
100 */
101 #define ADT7316_AD_SINGLE_CH_MASK 0x3
102 #define ADT7516_AD_SINGLE_CH_MASK 0x7
103 #define ADT7316_AD_SINGLE_CH_VDD 0
104 #define ADT7316_AD_SINGLE_CH_IN 1
105 #define ADT7316_AD_SINGLE_CH_EX 2
106 #define ADT7516_AD_SINGLE_CH_AIN1 2
107 #define ADT7516_AD_SINGLE_CH_AIN2 3
108 #define ADT7516_AD_SINGLE_CH_AIN3 4
109 #define ADT7516_AD_SINGLE_CH_AIN4 5
110 #define ADT7316_AD_SINGLE_CH_MODE 0x10
111 #define ADT7316_DISABLE_AVERAGING 0x20
112 #define ADT7316_EN_SMBUS_TIMEOUT 0x40
113 #define ADT7316_RESET 0x80
114
115 /*
116 * ADT7316 config3
117 */
118 #define ADT7316_ADCLK_22_5 0x1
119 #define ADT7316_DA_HIGH_RESOLUTION 0x2
120 #define ADT7316_DA_EN_VIA_DAC_LDCA 0x4
121 #define ADT7516_AIN_IN_VREF 0x10
122 #define ADT7316_EN_IN_TEMP_PROP_DACA 0x20
123 #define ADT7316_EN_EX_TEMP_PROP_DACB 0x40
124
125 /*
126 * ADT7316 DAC config
127 */
128 #define ADT7316_DA_2VREF_CH_MASK 0xF
129 #define ADT7316_DA_EN_MODE_MASK 0x30
130 #define ADT7316_DA_EN_MODE_SINGLE 0x00
131 #define ADT7316_DA_EN_MODE_AB_CD 0x10
132 #define ADT7316_DA_EN_MODE_ABCD 0x20
133 #define ADT7316_DA_EN_MODE_LDAC 0x30
134 #define ADT7316_VREF_BYPASS_DAC_AB 0x40
135 #define ADT7316_VREF_BYPASS_DAC_CD 0x80
136
137 /*
138 * ADT7316 LDAC config
139 */
140 #define ADT7316_LDAC_EN_DA_MASK 0xF
141 #define ADT7316_DAC_IN_VREF 0x10
142 #define ADT7516_DAC_AB_IN_VREF 0x10
143 #define ADT7516_DAC_CD_IN_VREF 0x20
144 #define ADT7516_DAC_IN_VREF_OFFSET 4
145 #define ADT7516_DAC_IN_VREF_MASK 0x30
146
147 /*
148 * ADT7316 INT_MASK2
149 */
150 #define ADT7316_INT_MASK2_VDD 0x10
151
152 /*
153 * ADT7316 value masks
154 */
155 #define ADT7316_VALUE_MASK 0xfff
156 #define ADT7316_T_VALUE_SIGN 0x400
157 #define ADT7316_T_VALUE_FLOAT_OFFSET 2
158 #define ADT7316_T_VALUE_FLOAT_MASK 0x2
159
160 /*
161 * Chip ID
162 */
163 #define ID_ADT7316 0x1
164 #define ID_ADT7317 0x2
165 #define ID_ADT7318 0x3
166 #define ID_ADT7516 0x11
167 #define ID_ADT7517 0x12
168 #define ID_ADT7519 0x14
169
170 #define ID_FAMILY_MASK 0xF0
171 #define ID_ADT73XX 0x0
172 #define ID_ADT75XX 0x10
173
174 /*
175 * struct adt7316_chip_info - chip specific information
176 */
177
178 struct adt7316_chip_info {
179 struct adt7316_bus bus;
180 u16 ldac_pin;
181 u16 int_mask; /* 0x2f */
182 u8 config1;
183 u8 config2;
184 u8 config3;
185 u8 dac_config; /* DAC config */
186 u8 ldac_config; /* LDAC config */
187 u8 dac_bits; /* 8, 10, 12 */
188 u8 id; /* chip id */
189 };
190
191 /*
192 * Logic interrupt mask for user application to enable
193 * interrupts.
194 */
195 #define ADT7316_IN_TEMP_HIGH_INT_MASK 0x1
196 #define ADT7316_IN_TEMP_LOW_INT_MASK 0x2
197 #define ADT7316_EX_TEMP_HIGH_INT_MASK 0x4
198 #define ADT7316_EX_TEMP_LOW_INT_MASK 0x8
199 #define ADT7316_EX_TEMP_FAULT_INT_MASK 0x10
200 #define ADT7516_AIN1_INT_MASK 0x4
201 #define ADT7516_AIN2_INT_MASK 0x20
202 #define ADT7516_AIN3_INT_MASK 0x40
203 #define ADT7516_AIN4_INT_MASK 0x80
204 #define ADT7316_VDD_INT_MASK 0x100
205 #define ADT7316_TEMP_INT_MASK 0x1F
206 #define ADT7516_AIN_INT_MASK 0xE0
207 #define ADT7316_TEMP_AIN_INT_MASK \
208 (ADT7316_TEMP_INT_MASK)
209
210 /*
211 * struct adt7316_chip_info - chip specific information
212 */
213
214 struct adt7316_limit_regs {
215 u16 data_high;
216 u16 data_low;
217 };
218
219 static ssize_t adt7316_show_enabled(struct device *dev,
220 struct device_attribute *attr,
221 char *buf)
222 {
223 struct iio_dev *dev_info = dev_to_iio_dev(dev);
224 struct adt7316_chip_info *chip = iio_priv(dev_info);
225
226 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_EN));
227 }
228
229 static ssize_t _adt7316_store_enabled(struct adt7316_chip_info *chip,
230 int enable)
231 {
232 u8 config1;
233 int ret;
234
235 if (enable)
236 config1 = chip->config1 | ADT7316_EN;
237 else
238 config1 = chip->config1 & ~ADT7316_EN;
239
240 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
241 if (ret)
242 return -EIO;
243
244 chip->config1 = config1;
245
246 return ret;
247
248 }
249
250 static ssize_t adt7316_store_enabled(struct device *dev,
251 struct device_attribute *attr,
252 const char *buf,
253 size_t len)
254 {
255 struct iio_dev *dev_info = dev_to_iio_dev(dev);
256 struct adt7316_chip_info *chip = iio_priv(dev_info);
257 int enable;
258
259 if (buf[0] == '1')
260 enable = 1;
261 else
262 enable = 0;
263
264 if (_adt7316_store_enabled(chip, enable) < 0)
265 return -EIO;
266
267 return len;
268 }
269
270 static IIO_DEVICE_ATTR(enabled, S_IRUGO | S_IWUSR,
271 adt7316_show_enabled,
272 adt7316_store_enabled,
273 0);
274
275 static ssize_t adt7316_show_select_ex_temp(struct device *dev,
276 struct device_attribute *attr,
277 char *buf)
278 {
279 struct iio_dev *dev_info = dev_to_iio_dev(dev);
280 struct adt7316_chip_info *chip = iio_priv(dev_info);
281
282 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
283 return -EPERM;
284
285 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7516_SEL_EX_TEMP));
286 }
287
288 static ssize_t adt7316_store_select_ex_temp(struct device *dev,
289 struct device_attribute *attr,
290 const char *buf,
291 size_t len)
292 {
293 struct iio_dev *dev_info = dev_to_iio_dev(dev);
294 struct adt7316_chip_info *chip = iio_priv(dev_info);
295 u8 config1;
296 int ret;
297
298 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
299 return -EPERM;
300
301 config1 = chip->config1 & (~ADT7516_SEL_EX_TEMP);
302 if (buf[0] == '1')
303 config1 |= ADT7516_SEL_EX_TEMP;
304
305 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
306 if (ret)
307 return -EIO;
308
309 chip->config1 = config1;
310
311 return len;
312 }
313
314 static IIO_DEVICE_ATTR(select_ex_temp, S_IRUGO | S_IWUSR,
315 adt7316_show_select_ex_temp,
316 adt7316_store_select_ex_temp,
317 0);
318
319 static ssize_t adt7316_show_mode(struct device *dev,
320 struct device_attribute *attr,
321 char *buf)
322 {
323 struct iio_dev *dev_info = dev_to_iio_dev(dev);
324 struct adt7316_chip_info *chip = iio_priv(dev_info);
325
326 if (chip->config2 & ADT7316_AD_SINGLE_CH_MODE)
327 return sprintf(buf, "single_channel\n");
328
329 return sprintf(buf, "round_robin\n");
330 }
331
332 static ssize_t adt7316_store_mode(struct device *dev,
333 struct device_attribute *attr,
334 const char *buf,
335 size_t len)
336 {
337 struct iio_dev *dev_info = dev_to_iio_dev(dev);
338 struct adt7316_chip_info *chip = iio_priv(dev_info);
339 u8 config2;
340 int ret;
341
342 config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MODE);
343 if (!memcmp(buf, "single_channel", 14))
344 config2 |= ADT7316_AD_SINGLE_CH_MODE;
345
346 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG2, config2);
347 if (ret)
348 return -EIO;
349
350 chip->config2 = config2;
351
352 return len;
353 }
354
355 static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
356 adt7316_show_mode,
357 adt7316_store_mode,
358 0);
359
360 static ssize_t adt7316_show_all_modes(struct device *dev,
361 struct device_attribute *attr,
362 char *buf)
363 {
364 return sprintf(buf, "single_channel\nround_robin\n");
365 }
366
367 static IIO_DEVICE_ATTR(all_modes, S_IRUGO, adt7316_show_all_modes, NULL, 0);
368
369 static ssize_t adt7316_show_ad_channel(struct device *dev,
370 struct device_attribute *attr,
371 char *buf)
372 {
373 struct iio_dev *dev_info = dev_to_iio_dev(dev);
374 struct adt7316_chip_info *chip = iio_priv(dev_info);
375
376 if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
377 return -EPERM;
378
379 switch (chip->config2 & ADT7516_AD_SINGLE_CH_MASK) {
380 case ADT7316_AD_SINGLE_CH_VDD:
381 return sprintf(buf, "0 - VDD\n");
382 case ADT7316_AD_SINGLE_CH_IN:
383 return sprintf(buf, "1 - Internal Temperature\n");
384 case ADT7316_AD_SINGLE_CH_EX:
385 if (((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) &&
386 (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
387 return sprintf(buf, "2 - AIN1\n");
388
389 return sprintf(buf, "2 - External Temperature\n");
390 case ADT7516_AD_SINGLE_CH_AIN2:
391 if ((chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)
392 return sprintf(buf, "3 - AIN2\n");
393
394 return sprintf(buf, "N/A\n");
395 case ADT7516_AD_SINGLE_CH_AIN3:
396 if (chip->config1 & ADT7516_SEL_AIN3)
397 return sprintf(buf, "4 - AIN3\n");
398
399 return sprintf(buf, "N/A\n");
400 case ADT7516_AD_SINGLE_CH_AIN4:
401 return sprintf(buf, "5 - AIN4\n");
402 default:
403 return sprintf(buf, "N/A\n");
404 }
405 }
406
407 static ssize_t adt7316_store_ad_channel(struct device *dev,
408 struct device_attribute *attr,
409 const char *buf,
410 size_t len)
411 {
412 struct iio_dev *dev_info = dev_to_iio_dev(dev);
413 struct adt7316_chip_info *chip = iio_priv(dev_info);
414 u8 config2;
415 u8 data;
416 int ret;
417
418 if (!(chip->config2 & ADT7316_AD_SINGLE_CH_MODE))
419 return -EPERM;
420
421 ret = kstrtou8(buf, 10, &data);
422 if (ret)
423 return -EINVAL;
424
425 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
426 if (data > 5)
427 return -EINVAL;
428
429 config2 = chip->config2 & (~ADT7516_AD_SINGLE_CH_MASK);
430 } else {
431 if (data > 2)
432 return -EINVAL;
433
434 config2 = chip->config2 & (~ADT7316_AD_SINGLE_CH_MASK);
435 }
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, S_IRUGO | S_IWUSR,
450 adt7316_show_ad_channel,
451 adt7316_store_ad_channel,
452 0);
453
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, S_IRUGO,
473 adt7316_show_all_ad_channels, NULL, 0);
474
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
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, S_IRUGO | S_IWUSR,
510 adt7316_show_disable_averaging,
511 adt7316_store_disable_averaging,
512 0);
513
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
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, S_IRUGO | S_IWUSR,
549 adt7316_show_enable_smbus_timeout,
550 adt7316_store_enable_smbus_timeout,
551 0);
552
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
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, S_IRUGO | S_IWUSR,
587 adt7316_show_powerdown,
588 adt7316_store_powerdown,
589 0);
590
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
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, S_IRUGO | S_IWUSR,
625 adt7316_show_fast_ad_clock,
626 adt7316_store_fast_ad_clock,
627 0);
628
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_ADT7316 || chip->id == ID_ADT7516)
638 return sprintf(buf, "1 (12 bits)\n");
639 if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
640 return sprintf(buf, "1 (10 bits)\n");
641 }
642
643 return sprintf(buf, "0 (8 bits)\n");
644 }
645
646 static ssize_t adt7316_store_da_high_resolution(struct device *dev,
647 struct device_attribute *attr,
648 const char *buf,
649 size_t len)
650 {
651 struct iio_dev *dev_info = dev_to_iio_dev(dev);
652 struct adt7316_chip_info *chip = iio_priv(dev_info);
653 u8 config3;
654 int ret;
655
656 chip->dac_bits = 8;
657
658 if (buf[0] == '1') {
659 config3 = chip->config3 | ADT7316_DA_HIGH_RESOLUTION;
660 if (chip->id == ID_ADT7316 || chip->id == ID_ADT7516)
661 chip->dac_bits = 12;
662 else if (chip->id == ID_ADT7317 || chip->id == ID_ADT7517)
663 chip->dac_bits = 10;
664 } else
665 config3 = chip->config3 & (~ADT7316_DA_HIGH_RESOLUTION);
666
667 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
668 if (ret)
669 return -EIO;
670
671 chip->config3 = config3;
672
673 return len;
674 }
675
676 static IIO_DEVICE_ATTR(da_high_resolution, S_IRUGO | S_IWUSR,
677 adt7316_show_da_high_resolution,
678 adt7316_store_da_high_resolution,
679 0);
680
681 static ssize_t adt7316_show_AIN_internal_Vref(struct device *dev,
682 struct device_attribute *attr,
683 char *buf)
684 {
685 struct iio_dev *dev_info = dev_to_iio_dev(dev);
686 struct adt7316_chip_info *chip = iio_priv(dev_info);
687
688 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
689 return -EPERM;
690
691 return sprintf(buf, "%d\n",
692 !!(chip->config3 & ADT7516_AIN_IN_VREF));
693 }
694
695 static ssize_t adt7316_store_AIN_internal_Vref(struct device *dev,
696 struct device_attribute *attr,
697 const char *buf,
698 size_t len)
699 {
700 struct iio_dev *dev_info = dev_to_iio_dev(dev);
701 struct adt7316_chip_info *chip = iio_priv(dev_info);
702 u8 config3;
703 int ret;
704
705 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
706 return -EPERM;
707
708 if (buf[0] != '1')
709 config3 = chip->config3 & (~ADT7516_AIN_IN_VREF);
710 else
711 config3 = chip->config3 | ADT7516_AIN_IN_VREF;
712
713 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
714 if (ret)
715 return -EIO;
716
717 chip->config3 = config3;
718
719 return len;
720 }
721
722 static IIO_DEVICE_ATTR(AIN_internal_Vref, S_IRUGO | S_IWUSR,
723 adt7316_show_AIN_internal_Vref,
724 adt7316_store_AIN_internal_Vref,
725 0);
726
727
728 static ssize_t adt7316_show_enable_prop_DACA(struct device *dev,
729 struct device_attribute *attr,
730 char *buf)
731 {
732 struct iio_dev *dev_info = dev_to_iio_dev(dev);
733 struct adt7316_chip_info *chip = iio_priv(dev_info);
734
735 return sprintf(buf, "%d\n",
736 !!(chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA));
737 }
738
739 static ssize_t adt7316_store_enable_prop_DACA(struct device *dev,
740 struct device_attribute *attr,
741 const char *buf,
742 size_t len)
743 {
744 struct iio_dev *dev_info = dev_to_iio_dev(dev);
745 struct adt7316_chip_info *chip = iio_priv(dev_info);
746 u8 config3;
747 int ret;
748
749 config3 = chip->config3 & (~ADT7316_EN_IN_TEMP_PROP_DACA);
750 if (buf[0] == '1')
751 config3 |= ADT7316_EN_IN_TEMP_PROP_DACA;
752
753 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
754 if (ret)
755 return -EIO;
756
757 chip->config3 = config3;
758
759 return len;
760 }
761
762 static IIO_DEVICE_ATTR(enable_proportion_DACA, S_IRUGO | S_IWUSR,
763 adt7316_show_enable_prop_DACA,
764 adt7316_store_enable_prop_DACA,
765 0);
766
767 static ssize_t adt7316_show_enable_prop_DACB(struct device *dev,
768 struct device_attribute *attr,
769 char *buf)
770 {
771 struct iio_dev *dev_info = dev_to_iio_dev(dev);
772 struct adt7316_chip_info *chip = iio_priv(dev_info);
773
774 return sprintf(buf, "%d\n",
775 !!(chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB));
776 }
777
778 static ssize_t adt7316_store_enable_prop_DACB(struct device *dev,
779 struct device_attribute *attr,
780 const char *buf,
781 size_t len)
782 {
783 struct iio_dev *dev_info = dev_to_iio_dev(dev);
784 struct adt7316_chip_info *chip = iio_priv(dev_info);
785 u8 config3;
786 int ret;
787
788 config3 = chip->config3 & (~ADT7316_EN_EX_TEMP_PROP_DACB);
789 if (buf[0] == '1')
790 config3 |= ADT7316_EN_EX_TEMP_PROP_DACB;
791
792 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, config3);
793 if (ret)
794 return -EIO;
795
796 chip->config3 = config3;
797
798 return len;
799 }
800
801 static IIO_DEVICE_ATTR(enable_proportion_DACB, S_IRUGO | S_IWUSR,
802 adt7316_show_enable_prop_DACB,
803 adt7316_store_enable_prop_DACB,
804 0);
805
806 static ssize_t adt7316_show_DAC_2Vref_ch_mask(struct device *dev,
807 struct device_attribute *attr,
808 char *buf)
809 {
810 struct iio_dev *dev_info = dev_to_iio_dev(dev);
811 struct adt7316_chip_info *chip = iio_priv(dev_info);
812
813 return sprintf(buf, "0x%x\n",
814 chip->dac_config & ADT7316_DA_2VREF_CH_MASK);
815 }
816
817 static ssize_t adt7316_store_DAC_2Vref_ch_mask(struct device *dev,
818 struct device_attribute *attr,
819 const char *buf,
820 size_t len)
821 {
822 struct iio_dev *dev_info = dev_to_iio_dev(dev);
823 struct adt7316_chip_info *chip = iio_priv(dev_info);
824 u8 dac_config;
825 u8 data;
826 int ret;
827
828 ret = kstrtou8(buf, 16, &data);
829 if (ret || data > ADT7316_DA_2VREF_CH_MASK)
830 return -EINVAL;
831
832 dac_config = chip->dac_config & (~ADT7316_DA_2VREF_CH_MASK);
833 dac_config |= data;
834
835 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
836 if (ret)
837 return -EIO;
838
839 chip->dac_config = dac_config;
840
841 return len;
842 }
843
844 static IIO_DEVICE_ATTR(DAC_2Vref_channels_mask, S_IRUGO | S_IWUSR,
845 adt7316_show_DAC_2Vref_ch_mask,
846 adt7316_store_DAC_2Vref_ch_mask,
847 0);
848
849 static ssize_t adt7316_show_DAC_update_mode(struct device *dev,
850 struct device_attribute *attr,
851 char *buf)
852 {
853 struct iio_dev *dev_info = dev_to_iio_dev(dev);
854 struct adt7316_chip_info *chip = iio_priv(dev_info);
855
856 if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA))
857 return sprintf(buf, "manual\n");
858
859 switch (chip->dac_config & ADT7316_DA_EN_MODE_MASK) {
860 case ADT7316_DA_EN_MODE_SINGLE:
861 return sprintf(buf,
862 "0 - auto at any MSB DAC writing\n");
863 case ADT7316_DA_EN_MODE_AB_CD:
864 return sprintf(buf,
865 "1 - auto at MSB DAC AB and CD writing\n");
866 case ADT7316_DA_EN_MODE_ABCD:
867 return sprintf(buf,
868 "2 - auto at MSB DAC ABCD writing\n");
869 default: /* ADT7316_DA_EN_MODE_LDAC */
870 return sprintf(buf, "3 - manual\n");
871 }
872 }
873
874 static ssize_t adt7316_store_DAC_update_mode(struct device *dev,
875 struct device_attribute *attr,
876 const char *buf,
877 size_t len)
878 {
879 struct iio_dev *dev_info = dev_to_iio_dev(dev);
880 struct adt7316_chip_info *chip = iio_priv(dev_info);
881 u8 dac_config;
882 u8 data;
883 int ret;
884
885 if (!(chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA))
886 return -EPERM;
887
888 ret = kstrtou8(buf, 10, &data);
889 if (ret || data > ADT7316_DA_EN_MODE_MASK)
890 return -EINVAL;
891
892 dac_config = chip->dac_config & (~ADT7316_DA_EN_MODE_MASK);
893 dac_config |= data;
894
895 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
896 if (ret)
897 return -EIO;
898
899 chip->dac_config = dac_config;
900
901 return len;
902 }
903
904 static IIO_DEVICE_ATTR(DAC_update_mode, S_IRUGO | S_IWUSR,
905 adt7316_show_DAC_update_mode,
906 adt7316_store_DAC_update_mode,
907 0);
908
909 static ssize_t adt7316_show_all_DAC_update_modes(struct device *dev,
910 struct device_attribute *attr,
911 char *buf)
912 {
913 struct iio_dev *dev_info = dev_to_iio_dev(dev);
914 struct adt7316_chip_info *chip = iio_priv(dev_info);
915
916 if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA)
917 return sprintf(buf, "0 - auto at any MSB DAC writing\n"
918 "1 - auto at MSB DAC AB and CD writing\n"
919 "2 - auto at MSB DAC ABCD writing\n"
920 "3 - manual\n");
921 return sprintf(buf, "manual\n");
922 }
923
924 static IIO_DEVICE_ATTR(all_DAC_update_modes, S_IRUGO,
925 adt7316_show_all_DAC_update_modes, NULL, 0);
926
927
928 static ssize_t adt7316_store_update_DAC(struct device *dev,
929 struct device_attribute *attr,
930 const char *buf,
931 size_t len)
932 {
933 struct iio_dev *dev_info = dev_to_iio_dev(dev);
934 struct adt7316_chip_info *chip = iio_priv(dev_info);
935 u8 ldac_config;
936 u8 data;
937 int ret;
938
939 if (chip->config3 & ADT7316_DA_EN_VIA_DAC_LDCA) {
940 if ((chip->dac_config & ADT7316_DA_EN_MODE_MASK) !=
941 ADT7316_DA_EN_MODE_LDAC)
942 return -EPERM;
943
944 ret = kstrtou8(buf, 16, &data);
945 if (ret || data > ADT7316_LDAC_EN_DA_MASK)
946 return -EINVAL;
947
948 ldac_config = chip->ldac_config & (~ADT7316_LDAC_EN_DA_MASK);
949 ldac_config |= data;
950
951 ret = chip->bus.write(chip->bus.client, ADT7316_LDAC_CONFIG,
952 ldac_config);
953 if (ret)
954 return -EIO;
955 } else {
956 gpio_set_value(chip->ldac_pin, 0);
957 gpio_set_value(chip->ldac_pin, 1);
958 }
959
960 return len;
961 }
962
963 static IIO_DEVICE_ATTR(update_DAC, S_IRUGO | S_IWUSR,
964 NULL,
965 adt7316_store_update_DAC,
966 0);
967
968 static ssize_t adt7316_show_DA_AB_Vref_bypass(struct device *dev,
969 struct device_attribute *attr,
970 char *buf)
971 {
972 struct iio_dev *dev_info = dev_to_iio_dev(dev);
973 struct adt7316_chip_info *chip = iio_priv(dev_info);
974
975 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
976 return -EPERM;
977
978 return sprintf(buf, "%d\n",
979 !!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_AB));
980 }
981
982 static ssize_t adt7316_store_DA_AB_Vref_bypass(struct device *dev,
983 struct device_attribute *attr,
984 const char *buf,
985 size_t len)
986 {
987 struct iio_dev *dev_info = dev_to_iio_dev(dev);
988 struct adt7316_chip_info *chip = iio_priv(dev_info);
989 u8 dac_config;
990 int ret;
991
992 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
993 return -EPERM;
994
995 dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_AB);
996 if (buf[0] == '1')
997 dac_config |= ADT7316_VREF_BYPASS_DAC_AB;
998
999 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
1000 if (ret)
1001 return -EIO;
1002
1003 chip->dac_config = dac_config;
1004
1005 return len;
1006 }
1007
1008 static IIO_DEVICE_ATTR(DA_AB_Vref_bypass, S_IRUGO | S_IWUSR,
1009 adt7316_show_DA_AB_Vref_bypass,
1010 adt7316_store_DA_AB_Vref_bypass,
1011 0);
1012
1013 static ssize_t adt7316_show_DA_CD_Vref_bypass(struct device *dev,
1014 struct device_attribute *attr,
1015 char *buf)
1016 {
1017 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1018 struct adt7316_chip_info *chip = iio_priv(dev_info);
1019
1020 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
1021 return -EPERM;
1022
1023 return sprintf(buf, "%d\n",
1024 !!(chip->dac_config & ADT7316_VREF_BYPASS_DAC_CD));
1025 }
1026
1027 static ssize_t adt7316_store_DA_CD_Vref_bypass(struct device *dev,
1028 struct device_attribute *attr,
1029 const char *buf,
1030 size_t len)
1031 {
1032 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1033 struct adt7316_chip_info *chip = iio_priv(dev_info);
1034 u8 dac_config;
1035 int ret;
1036
1037 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
1038 return -EPERM;
1039
1040 dac_config = chip->dac_config & (~ADT7316_VREF_BYPASS_DAC_CD);
1041 if (buf[0] == '1')
1042 dac_config |= ADT7316_VREF_BYPASS_DAC_CD;
1043
1044 ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config);
1045 if (ret)
1046 return -EIO;
1047
1048 chip->dac_config = dac_config;
1049
1050 return len;
1051 }
1052
1053 static IIO_DEVICE_ATTR(DA_CD_Vref_bypass, S_IRUGO | S_IWUSR,
1054 adt7316_show_DA_CD_Vref_bypass,
1055 adt7316_store_DA_CD_Vref_bypass,
1056 0);
1057
1058 static ssize_t adt7316_show_DAC_internal_Vref(struct device *dev,
1059 struct device_attribute *attr,
1060 char *buf)
1061 {
1062 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1063 struct adt7316_chip_info *chip = iio_priv(dev_info);
1064
1065 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
1066 return sprintf(buf, "0x%x\n",
1067 (chip->dac_config & ADT7516_DAC_IN_VREF_MASK) >>
1068 ADT7516_DAC_IN_VREF_OFFSET);
1069 return sprintf(buf, "%d\n",
1070 !!(chip->dac_config & ADT7316_DAC_IN_VREF));
1071 }
1072
1073 static ssize_t adt7316_store_DAC_internal_Vref(struct device *dev,
1074 struct device_attribute *attr,
1075 const char *buf,
1076 size_t len)
1077 {
1078 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1079 struct adt7316_chip_info *chip = iio_priv(dev_info);
1080 u8 ldac_config;
1081 u8 data;
1082 int ret;
1083
1084 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX) {
1085 ret = kstrtou8(buf, 16, &data);
1086 if (ret || data > 3)
1087 return -EINVAL;
1088
1089 ldac_config = chip->ldac_config & (~ADT7516_DAC_IN_VREF_MASK);
1090 if (data & 0x1)
1091 ldac_config |= ADT7516_DAC_AB_IN_VREF;
1092 else if (data & 0x2)
1093 ldac_config |= ADT7516_DAC_CD_IN_VREF;
1094 } else {
1095 ret = kstrtou8(buf, 16, &data);
1096 if (ret)
1097 return -EINVAL;
1098
1099 ldac_config = chip->ldac_config & (~ADT7316_DAC_IN_VREF);
1100 if (data)
1101 ldac_config = chip->ldac_config | ADT7316_DAC_IN_VREF;
1102 }
1103
1104 ret = chip->bus.write(chip->bus.client, ADT7316_LDAC_CONFIG,
1105 ldac_config);
1106 if (ret)
1107 return -EIO;
1108
1109 chip->ldac_config = ldac_config;
1110
1111 return len;
1112 }
1113
1114 static IIO_DEVICE_ATTR(DAC_internal_Vref, S_IRUGO | S_IWUSR,
1115 adt7316_show_DAC_internal_Vref,
1116 adt7316_store_DAC_internal_Vref,
1117 0);
1118
1119 static ssize_t adt7316_show_ad(struct adt7316_chip_info *chip,
1120 int channel, char *buf)
1121 {
1122 u16 data;
1123 u8 msb, lsb;
1124 char sign = ' ';
1125 int ret;
1126
1127 if ((chip->config2 & ADT7316_AD_SINGLE_CH_MODE) &&
1128 channel != (chip->config2 & ADT7516_AD_SINGLE_CH_MASK))
1129 return -EPERM;
1130
1131 switch (channel) {
1132 case ADT7316_AD_SINGLE_CH_IN:
1133 ret = chip->bus.read(chip->bus.client,
1134 ADT7316_LSB_IN_TEMP_VDD, &lsb);
1135 if (ret)
1136 return -EIO;
1137
1138 ret = chip->bus.read(chip->bus.client,
1139 ADT7316_AD_MSB_DATA_BASE + channel, &msb);
1140 if (ret)
1141 return -EIO;
1142
1143 data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
1144 data |= lsb & ADT7316_LSB_IN_TEMP_MASK;
1145 break;
1146 case ADT7316_AD_SINGLE_CH_VDD:
1147 ret = chip->bus.read(chip->bus.client,
1148 ADT7316_LSB_IN_TEMP_VDD, &lsb);
1149 if (ret)
1150 return -EIO;
1151
1152 ret = chip->bus.read(chip->bus.client,
1153
1154 ADT7316_AD_MSB_DATA_BASE + channel, &msb);
1155 if (ret)
1156 return -EIO;
1157
1158 data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
1159 data |= (lsb & ADT7316_LSB_VDD_MASK) >> ADT7316_LSB_VDD_OFFSET;
1160 return sprintf(buf, "%d\n", data);
1161 default: /* ex_temp and ain */
1162 ret = chip->bus.read(chip->bus.client,
1163 ADT7316_LSB_EX_TEMP_AIN, &lsb);
1164 if (ret)
1165 return -EIO;
1166
1167 ret = chip->bus.read(chip->bus.client,
1168 ADT7316_AD_MSB_DATA_BASE + channel, &msb);
1169 if (ret)
1170 return -EIO;
1171
1172 data = msb << ADT7316_T_VALUE_FLOAT_OFFSET;
1173 data |= lsb & (ADT7316_LSB_EX_TEMP_MASK <<
1174 (ADT7516_LSB_AIN_SHIFT * (channel -
1175 (ADT7316_MSB_EX_TEMP - ADT7316_AD_MSB_DATA_BASE))));
1176
1177 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
1178 return sprintf(buf, "%d\n", data);
1179
1180 break;
1181 }
1182
1183 if (data & ADT7316_T_VALUE_SIGN) {
1184 /* convert supplement to positive value */
1185 data = (ADT7316_T_VALUE_SIGN << 1) - data;
1186 sign = '-';
1187 }
1188
1189 return sprintf(buf, "%c%d.%.2d\n", sign,
1190 (data >> ADT7316_T_VALUE_FLOAT_OFFSET),
1191 (data & ADT7316_T_VALUE_FLOAT_MASK) * 25);
1192 }
1193
1194 static ssize_t adt7316_show_VDD(struct device *dev,
1195 struct device_attribute *attr,
1196 char *buf)
1197 {
1198 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1199 struct adt7316_chip_info *chip = iio_priv(dev_info);
1200
1201 return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_VDD, buf);
1202 }
1203 static IIO_DEVICE_ATTR(VDD, S_IRUGO, adt7316_show_VDD, NULL, 0);
1204
1205 static ssize_t adt7316_show_in_temp(struct device *dev,
1206 struct device_attribute *attr,
1207 char *buf)
1208 {
1209 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1210 struct adt7316_chip_info *chip = iio_priv(dev_info);
1211
1212 return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_IN, buf);
1213 }
1214
1215 static IIO_DEVICE_ATTR(in_temp, S_IRUGO, adt7316_show_in_temp, NULL, 0);
1216
1217 static ssize_t adt7316_show_ex_temp_AIN1(struct device *dev,
1218 struct device_attribute *attr,
1219 char *buf)
1220 {
1221 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1222 struct adt7316_chip_info *chip = iio_priv(dev_info);
1223
1224 return adt7316_show_ad(chip, ADT7316_AD_SINGLE_CH_EX, buf);
1225 }
1226
1227 static IIO_DEVICE_ATTR(ex_temp_AIN1, S_IRUGO, adt7316_show_ex_temp_AIN1,
1228 NULL, 0);
1229 static IIO_DEVICE_ATTR(ex_temp, S_IRUGO, adt7316_show_ex_temp_AIN1, NULL, 0);
1230
1231 static ssize_t adt7316_show_AIN2(struct device *dev,
1232 struct device_attribute *attr,
1233 char *buf)
1234 {
1235 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1236 struct adt7316_chip_info *chip = iio_priv(dev_info);
1237
1238 return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN2, buf);
1239 }
1240 static IIO_DEVICE_ATTR(AIN2, S_IRUGO, adt7316_show_AIN2, NULL, 0);
1241
1242 static ssize_t adt7316_show_AIN3(struct device *dev,
1243 struct device_attribute *attr,
1244 char *buf)
1245 {
1246 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1247 struct adt7316_chip_info *chip = iio_priv(dev_info);
1248
1249 return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN3, buf);
1250 }
1251 static IIO_DEVICE_ATTR(AIN3, S_IRUGO, adt7316_show_AIN3, NULL, 0);
1252
1253 static ssize_t adt7316_show_AIN4(struct device *dev,
1254 struct device_attribute *attr,
1255 char *buf)
1256 {
1257 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1258 struct adt7316_chip_info *chip = iio_priv(dev_info);
1259
1260 return adt7316_show_ad(chip, ADT7516_AD_SINGLE_CH_AIN4, buf);
1261 }
1262 static IIO_DEVICE_ATTR(AIN4, S_IRUGO, adt7316_show_AIN4, NULL, 0);
1263
1264 static ssize_t adt7316_show_temp_offset(struct adt7316_chip_info *chip,
1265 int offset_addr, char *buf)
1266 {
1267 int data;
1268 u8 val;
1269 int ret;
1270
1271 ret = chip->bus.read(chip->bus.client, offset_addr, &val);
1272 if (ret)
1273 return -EIO;
1274
1275 data = (int)val;
1276 if (val & 0x80)
1277 data -= 256;
1278
1279 return sprintf(buf, "%d\n", data);
1280 }
1281
1282 static ssize_t adt7316_store_temp_offset(struct adt7316_chip_info *chip,
1283 int offset_addr, const char *buf, size_t len)
1284 {
1285 int data;
1286 u8 val;
1287 int ret;
1288
1289 ret = kstrtoint(buf, 10, &data);
1290 if (ret || data > 127 || data < -128)
1291 return -EINVAL;
1292
1293 if (data < 0)
1294 data += 256;
1295
1296 val = (u8)data;
1297
1298 ret = chip->bus.write(chip->bus.client, offset_addr, val);
1299 if (ret)
1300 return -EIO;
1301
1302 return len;
1303 }
1304
1305 static ssize_t adt7316_show_in_temp_offset(struct device *dev,
1306 struct device_attribute *attr,
1307 char *buf)
1308 {
1309 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1310 struct adt7316_chip_info *chip = iio_priv(dev_info);
1311
1312 return adt7316_show_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf);
1313 }
1314
1315 static ssize_t adt7316_store_in_temp_offset(struct device *dev,
1316 struct device_attribute *attr,
1317 const char *buf,
1318 size_t len)
1319 {
1320 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1321 struct adt7316_chip_info *chip = iio_priv(dev_info);
1322
1323 return adt7316_store_temp_offset(chip, ADT7316_IN_TEMP_OFFSET, buf,
1324 len);
1325 }
1326
1327 static IIO_DEVICE_ATTR(in_temp_offset, S_IRUGO | S_IWUSR,
1328 adt7316_show_in_temp_offset,
1329 adt7316_store_in_temp_offset, 0);
1330
1331 static ssize_t adt7316_show_ex_temp_offset(struct device *dev,
1332 struct device_attribute *attr,
1333 char *buf)
1334 {
1335 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1336 struct adt7316_chip_info *chip = iio_priv(dev_info);
1337
1338 return adt7316_show_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf);
1339 }
1340
1341 static ssize_t adt7316_store_ex_temp_offset(struct device *dev,
1342 struct device_attribute *attr,
1343 const char *buf,
1344 size_t len)
1345 {
1346 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1347 struct adt7316_chip_info *chip = iio_priv(dev_info);
1348
1349 return adt7316_store_temp_offset(chip, ADT7316_EX_TEMP_OFFSET, buf,
1350 len);
1351 }
1352
1353 static IIO_DEVICE_ATTR(ex_temp_offset, S_IRUGO | S_IWUSR,
1354 adt7316_show_ex_temp_offset,
1355 adt7316_store_ex_temp_offset, 0);
1356
1357 static ssize_t adt7316_show_in_analog_temp_offset(struct device *dev,
1358 struct device_attribute *attr,
1359 char *buf)
1360 {
1361 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1362 struct adt7316_chip_info *chip = iio_priv(dev_info);
1363
1364 return adt7316_show_temp_offset(chip,
1365 ADT7316_IN_ANALOG_TEMP_OFFSET, buf);
1366 }
1367
1368 static ssize_t adt7316_store_in_analog_temp_offset(struct device *dev,
1369 struct device_attribute *attr,
1370 const char *buf,
1371 size_t len)
1372 {
1373 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1374 struct adt7316_chip_info *chip = iio_priv(dev_info);
1375
1376 return adt7316_store_temp_offset(chip,
1377 ADT7316_IN_ANALOG_TEMP_OFFSET, buf, len);
1378 }
1379
1380 static IIO_DEVICE_ATTR(in_analog_temp_offset, S_IRUGO | S_IWUSR,
1381 adt7316_show_in_analog_temp_offset,
1382 adt7316_store_in_analog_temp_offset, 0);
1383
1384 static ssize_t adt7316_show_ex_analog_temp_offset(struct device *dev,
1385 struct device_attribute *attr,
1386 char *buf)
1387 {
1388 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1389 struct adt7316_chip_info *chip = iio_priv(dev_info);
1390
1391 return adt7316_show_temp_offset(chip,
1392 ADT7316_EX_ANALOG_TEMP_OFFSET, buf);
1393 }
1394
1395 static ssize_t adt7316_store_ex_analog_temp_offset(struct device *dev,
1396 struct device_attribute *attr,
1397 const char *buf,
1398 size_t len)
1399 {
1400 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1401 struct adt7316_chip_info *chip = iio_priv(dev_info);
1402
1403 return adt7316_store_temp_offset(chip,
1404 ADT7316_EX_ANALOG_TEMP_OFFSET, buf, len);
1405 }
1406
1407 static IIO_DEVICE_ATTR(ex_analog_temp_offset, S_IRUGO | S_IWUSR,
1408 adt7316_show_ex_analog_temp_offset,
1409 adt7316_store_ex_analog_temp_offset, 0);
1410
1411 static ssize_t adt7316_show_DAC(struct adt7316_chip_info *chip,
1412 int channel, char *buf)
1413 {
1414 u16 data;
1415 u8 msb, lsb, offset;
1416 int ret;
1417
1418 if (channel >= ADT7316_DA_MSB_DATA_REGS ||
1419 (channel == 0 &&
1420 (chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA)) ||
1421 (channel == 1 &&
1422 (chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB)))
1423 return -EPERM;
1424
1425 offset = chip->dac_bits - 8;
1426
1427 if (chip->dac_bits > 8) {
1428 ret = chip->bus.read(chip->bus.client,
1429 ADT7316_DA_DATA_BASE + channel * 2, &lsb);
1430 if (ret)
1431 return -EIO;
1432 }
1433
1434 ret = chip->bus.read(chip->bus.client,
1435 ADT7316_DA_DATA_BASE + 1 + channel * 2, &msb);
1436 if (ret)
1437 return -EIO;
1438
1439 data = (msb << offset) + (lsb & ((1 << offset) - 1));
1440
1441 return sprintf(buf, "%d\n", data);
1442 }
1443
1444 static ssize_t adt7316_store_DAC(struct adt7316_chip_info *chip,
1445 int channel, const char *buf, size_t len)
1446 {
1447 u8 msb, lsb, offset;
1448 u16 data;
1449 int ret;
1450
1451 if (channel >= ADT7316_DA_MSB_DATA_REGS ||
1452 (channel == 0 &&
1453 (chip->config3 & ADT7316_EN_IN_TEMP_PROP_DACA)) ||
1454 (channel == 1 &&
1455 (chip->config3 & ADT7316_EN_EX_TEMP_PROP_DACB)))
1456 return -EPERM;
1457
1458 offset = chip->dac_bits - 8;
1459
1460 ret = kstrtou16(buf, 10, &data);
1461 if (ret || data >= (1 << chip->dac_bits))
1462 return -EINVAL;
1463
1464 if (chip->dac_bits > 8) {
1465 lsb = data & (1 << offset);
1466 ret = chip->bus.write(chip->bus.client,
1467 ADT7316_DA_DATA_BASE + channel * 2, lsb);
1468 if (ret)
1469 return -EIO;
1470 }
1471
1472 msb = data >> offset;
1473 ret = chip->bus.write(chip->bus.client,
1474 ADT7316_DA_DATA_BASE + 1 + channel * 2, msb);
1475 if (ret)
1476 return -EIO;
1477
1478 return len;
1479 }
1480
1481 static ssize_t adt7316_show_DAC_A(struct device *dev,
1482 struct device_attribute *attr,
1483 char *buf)
1484 {
1485 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1486 struct adt7316_chip_info *chip = iio_priv(dev_info);
1487
1488 return adt7316_show_DAC(chip, 0, buf);
1489 }
1490
1491 static ssize_t adt7316_store_DAC_A(struct device *dev,
1492 struct device_attribute *attr,
1493 const char *buf,
1494 size_t len)
1495 {
1496 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1497 struct adt7316_chip_info *chip = iio_priv(dev_info);
1498
1499 return adt7316_store_DAC(chip, 0, buf, len);
1500 }
1501
1502 static IIO_DEVICE_ATTR(DAC_A, S_IRUGO | S_IWUSR, adt7316_show_DAC_A,
1503 adt7316_store_DAC_A, 0);
1504
1505 static ssize_t adt7316_show_DAC_B(struct device *dev,
1506 struct device_attribute *attr,
1507 char *buf)
1508 {
1509 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1510 struct adt7316_chip_info *chip = iio_priv(dev_info);
1511
1512 return adt7316_show_DAC(chip, 1, buf);
1513 }
1514
1515 static ssize_t adt7316_store_DAC_B(struct device *dev,
1516 struct device_attribute *attr,
1517 const char *buf,
1518 size_t len)
1519 {
1520 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1521 struct adt7316_chip_info *chip = iio_priv(dev_info);
1522
1523 return adt7316_store_DAC(chip, 1, buf, len);
1524 }
1525
1526 static IIO_DEVICE_ATTR(DAC_B, S_IRUGO | S_IWUSR, adt7316_show_DAC_B,
1527 adt7316_store_DAC_B, 0);
1528
1529 static ssize_t adt7316_show_DAC_C(struct device *dev,
1530 struct device_attribute *attr,
1531 char *buf)
1532 {
1533 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1534 struct adt7316_chip_info *chip = iio_priv(dev_info);
1535
1536 return adt7316_show_DAC(chip, 2, buf);
1537 }
1538
1539 static ssize_t adt7316_store_DAC_C(struct device *dev,
1540 struct device_attribute *attr,
1541 const char *buf,
1542 size_t len)
1543 {
1544 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1545 struct adt7316_chip_info *chip = iio_priv(dev_info);
1546
1547 return adt7316_store_DAC(chip, 2, buf, len);
1548 }
1549
1550 static IIO_DEVICE_ATTR(DAC_C, S_IRUGO | S_IWUSR, adt7316_show_DAC_C,
1551 adt7316_store_DAC_C, 0);
1552
1553 static ssize_t adt7316_show_DAC_D(struct device *dev,
1554 struct device_attribute *attr,
1555 char *buf)
1556 {
1557 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1558 struct adt7316_chip_info *chip = iio_priv(dev_info);
1559
1560 return adt7316_show_DAC(chip, 3, buf);
1561 }
1562
1563 static ssize_t adt7316_store_DAC_D(struct device *dev,
1564 struct device_attribute *attr,
1565 const char *buf,
1566 size_t len)
1567 {
1568 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1569 struct adt7316_chip_info *chip = iio_priv(dev_info);
1570
1571 return adt7316_store_DAC(chip, 3, buf, len);
1572 }
1573
1574 static IIO_DEVICE_ATTR(DAC_D, S_IRUGO | S_IWUSR, adt7316_show_DAC_D,
1575 adt7316_store_DAC_D, 0);
1576
1577 static ssize_t adt7316_show_device_id(struct device *dev,
1578 struct device_attribute *attr,
1579 char *buf)
1580 {
1581 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1582 struct adt7316_chip_info *chip = iio_priv(dev_info);
1583 u8 id;
1584 int ret;
1585
1586 ret = chip->bus.read(chip->bus.client, ADT7316_DEVICE_ID, &id);
1587 if (ret)
1588 return -EIO;
1589
1590 return sprintf(buf, "%d\n", id);
1591 }
1592
1593 static IIO_DEVICE_ATTR(device_id, S_IRUGO, adt7316_show_device_id, NULL, 0);
1594
1595 static ssize_t adt7316_show_manufactorer_id(struct device *dev,
1596 struct device_attribute *attr,
1597 char *buf)
1598 {
1599 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1600 struct adt7316_chip_info *chip = iio_priv(dev_info);
1601 u8 id;
1602 int ret;
1603
1604 ret = chip->bus.read(chip->bus.client, ADT7316_MANUFACTURE_ID, &id);
1605 if (ret)
1606 return -EIO;
1607
1608 return sprintf(buf, "%d\n", id);
1609 }
1610
1611 static IIO_DEVICE_ATTR(manufactorer_id, S_IRUGO,
1612 adt7316_show_manufactorer_id, NULL, 0);
1613
1614 static ssize_t adt7316_show_device_rev(struct device *dev,
1615 struct device_attribute *attr,
1616 char *buf)
1617 {
1618 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1619 struct adt7316_chip_info *chip = iio_priv(dev_info);
1620 u8 rev;
1621 int ret;
1622
1623 ret = chip->bus.read(chip->bus.client, ADT7316_DEVICE_REV, &rev);
1624 if (ret)
1625 return -EIO;
1626
1627 return sprintf(buf, "%d\n", rev);
1628 }
1629
1630 static IIO_DEVICE_ATTR(device_rev, S_IRUGO, adt7316_show_device_rev, NULL, 0);
1631
1632 static ssize_t adt7316_show_bus_type(struct device *dev,
1633 struct device_attribute *attr,
1634 char *buf)
1635 {
1636 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1637 struct adt7316_chip_info *chip = iio_priv(dev_info);
1638 u8 stat;
1639 int ret;
1640
1641 ret = chip->bus.read(chip->bus.client, ADT7316_SPI_LOCK_STAT, &stat);
1642 if (ret)
1643 return -EIO;
1644
1645 if (stat)
1646 return sprintf(buf, "spi\n");
1647
1648 return sprintf(buf, "i2c\n");
1649 }
1650
1651 static IIO_DEVICE_ATTR(bus_type, S_IRUGO, adt7316_show_bus_type, NULL, 0);
1652
1653 static struct attribute *adt7316_attributes[] = {
1654 &iio_dev_attr_all_modes.dev_attr.attr,
1655 &iio_dev_attr_mode.dev_attr.attr,
1656 &iio_dev_attr_enabled.dev_attr.attr,
1657 &iio_dev_attr_ad_channel.dev_attr.attr,
1658 &iio_dev_attr_all_ad_channels.dev_attr.attr,
1659 &iio_dev_attr_disable_averaging.dev_attr.attr,
1660 &iio_dev_attr_enable_smbus_timeout.dev_attr.attr,
1661 &iio_dev_attr_powerdown.dev_attr.attr,
1662 &iio_dev_attr_fast_ad_clock.dev_attr.attr,
1663 &iio_dev_attr_da_high_resolution.dev_attr.attr,
1664 &iio_dev_attr_enable_proportion_DACA.dev_attr.attr,
1665 &iio_dev_attr_enable_proportion_DACB.dev_attr.attr,
1666 &iio_dev_attr_DAC_2Vref_channels_mask.dev_attr.attr,
1667 &iio_dev_attr_DAC_update_mode.dev_attr.attr,
1668 &iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
1669 &iio_dev_attr_update_DAC.dev_attr.attr,
1670 &iio_dev_attr_DA_AB_Vref_bypass.dev_attr.attr,
1671 &iio_dev_attr_DA_CD_Vref_bypass.dev_attr.attr,
1672 &iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
1673 &iio_dev_attr_VDD.dev_attr.attr,
1674 &iio_dev_attr_in_temp.dev_attr.attr,
1675 &iio_dev_attr_ex_temp.dev_attr.attr,
1676 &iio_dev_attr_in_temp_offset.dev_attr.attr,
1677 &iio_dev_attr_ex_temp_offset.dev_attr.attr,
1678 &iio_dev_attr_in_analog_temp_offset.dev_attr.attr,
1679 &iio_dev_attr_ex_analog_temp_offset.dev_attr.attr,
1680 &iio_dev_attr_DAC_A.dev_attr.attr,
1681 &iio_dev_attr_DAC_B.dev_attr.attr,
1682 &iio_dev_attr_DAC_C.dev_attr.attr,
1683 &iio_dev_attr_DAC_D.dev_attr.attr,
1684 &iio_dev_attr_device_id.dev_attr.attr,
1685 &iio_dev_attr_manufactorer_id.dev_attr.attr,
1686 &iio_dev_attr_device_rev.dev_attr.attr,
1687 &iio_dev_attr_bus_type.dev_attr.attr,
1688 NULL,
1689 };
1690
1691 static const struct attribute_group adt7316_attribute_group = {
1692 .attrs = adt7316_attributes,
1693 };
1694
1695 static struct attribute *adt7516_attributes[] = {
1696 &iio_dev_attr_all_modes.dev_attr.attr,
1697 &iio_dev_attr_mode.dev_attr.attr,
1698 &iio_dev_attr_select_ex_temp.dev_attr.attr,
1699 &iio_dev_attr_enabled.dev_attr.attr,
1700 &iio_dev_attr_ad_channel.dev_attr.attr,
1701 &iio_dev_attr_all_ad_channels.dev_attr.attr,
1702 &iio_dev_attr_disable_averaging.dev_attr.attr,
1703 &iio_dev_attr_enable_smbus_timeout.dev_attr.attr,
1704 &iio_dev_attr_powerdown.dev_attr.attr,
1705 &iio_dev_attr_fast_ad_clock.dev_attr.attr,
1706 &iio_dev_attr_AIN_internal_Vref.dev_attr.attr,
1707 &iio_dev_attr_da_high_resolution.dev_attr.attr,
1708 &iio_dev_attr_enable_proportion_DACA.dev_attr.attr,
1709 &iio_dev_attr_enable_proportion_DACB.dev_attr.attr,
1710 &iio_dev_attr_DAC_2Vref_channels_mask.dev_attr.attr,
1711 &iio_dev_attr_DAC_update_mode.dev_attr.attr,
1712 &iio_dev_attr_all_DAC_update_modes.dev_attr.attr,
1713 &iio_dev_attr_update_DAC.dev_attr.attr,
1714 &iio_dev_attr_DA_AB_Vref_bypass.dev_attr.attr,
1715 &iio_dev_attr_DA_CD_Vref_bypass.dev_attr.attr,
1716 &iio_dev_attr_DAC_internal_Vref.dev_attr.attr,
1717 &iio_dev_attr_VDD.dev_attr.attr,
1718 &iio_dev_attr_in_temp.dev_attr.attr,
1719 &iio_dev_attr_ex_temp_AIN1.dev_attr.attr,
1720 &iio_dev_attr_AIN2.dev_attr.attr,
1721 &iio_dev_attr_AIN3.dev_attr.attr,
1722 &iio_dev_attr_AIN4.dev_attr.attr,
1723 &iio_dev_attr_in_temp_offset.dev_attr.attr,
1724 &iio_dev_attr_ex_temp_offset.dev_attr.attr,
1725 &iio_dev_attr_in_analog_temp_offset.dev_attr.attr,
1726 &iio_dev_attr_ex_analog_temp_offset.dev_attr.attr,
1727 &iio_dev_attr_DAC_A.dev_attr.attr,
1728 &iio_dev_attr_DAC_B.dev_attr.attr,
1729 &iio_dev_attr_DAC_C.dev_attr.attr,
1730 &iio_dev_attr_DAC_D.dev_attr.attr,
1731 &iio_dev_attr_device_id.dev_attr.attr,
1732 &iio_dev_attr_manufactorer_id.dev_attr.attr,
1733 &iio_dev_attr_device_rev.dev_attr.attr,
1734 &iio_dev_attr_bus_type.dev_attr.attr,
1735 NULL,
1736 };
1737
1738 static const struct attribute_group adt7516_attribute_group = {
1739 .attrs = adt7516_attributes,
1740 };
1741
1742 static irqreturn_t adt7316_event_handler(int irq, void *private)
1743 {
1744 struct iio_dev *indio_dev = private;
1745 struct adt7316_chip_info *chip = iio_priv(indio_dev);
1746 u8 stat1, stat2;
1747 int ret;
1748 s64 time;
1749
1750 ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT1, &stat1);
1751 if (!ret) {
1752 if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
1753 stat1 &= 0x1F;
1754
1755 time = iio_get_time_ns();
1756 if (stat1 & BIT(0))
1757 iio_push_event(indio_dev,
1758 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
1759 IIO_EV_TYPE_THRESH,
1760 IIO_EV_DIR_RISING),
1761 time);
1762 if (stat1 & BIT(1))
1763 iio_push_event(indio_dev,
1764 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
1765 IIO_EV_TYPE_THRESH,
1766 IIO_EV_DIR_FALLING),
1767 time);
1768 if (stat1 & BIT(2))
1769 iio_push_event(indio_dev,
1770 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 1,
1771 IIO_EV_TYPE_THRESH,
1772 IIO_EV_DIR_RISING),
1773 time);
1774 if (stat1 & BIT(3))
1775 iio_push_event(indio_dev,
1776 IIO_UNMOD_EVENT_CODE(IIO_TEMP, 1,
1777 IIO_EV_TYPE_THRESH,
1778 IIO_EV_DIR_FALLING),
1779 time);
1780 if (stat1 & BIT(5))
1781 iio_push_event(indio_dev,
1782 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 1,
1783 IIO_EV_TYPE_THRESH,
1784 IIO_EV_DIR_EITHER),
1785 time);
1786 if (stat1 & BIT(6))
1787 iio_push_event(indio_dev,
1788 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 2,
1789 IIO_EV_TYPE_THRESH,
1790 IIO_EV_DIR_EITHER),
1791 time);
1792 if (stat1 & BIT(7))
1793 iio_push_event(indio_dev,
1794 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, 3,
1795 IIO_EV_TYPE_THRESH,
1796 IIO_EV_DIR_EITHER),
1797 time);
1798 }
1799 ret = chip->bus.read(chip->bus.client, ADT7316_INT_STAT2, &stat2);
1800 if (!ret) {
1801 if (stat2 & ADT7316_INT_MASK2_VDD)
1802 iio_push_event(indio_dev,
1803 IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE,
1804 0,
1805 IIO_EV_TYPE_THRESH,
1806 IIO_EV_DIR_RISING),
1807 iio_get_time_ns());
1808 }
1809
1810 return IRQ_HANDLED;
1811 }
1812
1813 /*
1814 * Show mask of enabled interrupts in Hex.
1815 */
1816 static ssize_t adt7316_show_int_mask(struct device *dev,
1817 struct device_attribute *attr,
1818 char *buf)
1819 {
1820 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1821 struct adt7316_chip_info *chip = iio_priv(dev_info);
1822
1823 return sprintf(buf, "0x%x\n", chip->int_mask);
1824 }
1825
1826 /*
1827 * Set 1 to the mask in Hex to enabled interrupts.
1828 */
1829 static ssize_t adt7316_set_int_mask(struct device *dev,
1830 struct device_attribute *attr,
1831 const char *buf,
1832 size_t len)
1833 {
1834 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1835 struct adt7316_chip_info *chip = iio_priv(dev_info);
1836 u16 data;
1837 int ret;
1838 u8 mask;
1839
1840 ret = kstrtou16(buf, 16, &data);
1841 if (ret || data >= ADT7316_VDD_INT_MASK + 1)
1842 return -EINVAL;
1843
1844 if (data & ADT7316_VDD_INT_MASK)
1845 mask = 0; /* enable vdd int */
1846 else
1847 mask = ADT7316_INT_MASK2_VDD; /* disable vdd int */
1848
1849 ret = chip->bus.write(chip->bus.client, ADT7316_INT_MASK2, mask);
1850 if (!ret) {
1851 chip->int_mask &= ~ADT7316_VDD_INT_MASK;
1852 chip->int_mask |= data & ADT7316_VDD_INT_MASK;
1853 }
1854
1855 if (data & ADT7316_TEMP_AIN_INT_MASK) {
1856 if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX)
1857 /* mask in reg is opposite, set 1 to disable */
1858 mask = (~data) & ADT7316_TEMP_INT_MASK;
1859 else
1860 /* mask in reg is opposite, set 1 to disable */
1861 mask = (~data) & ADT7316_TEMP_AIN_INT_MASK;
1862 }
1863 ret = chip->bus.write(chip->bus.client, ADT7316_INT_MASK1, mask);
1864
1865 chip->int_mask = mask;
1866
1867 return len;
1868 }
1869 static inline ssize_t adt7316_show_ad_bound(struct device *dev,
1870 struct device_attribute *attr,
1871 char *buf)
1872 {
1873 struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
1874 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1875 struct adt7316_chip_info *chip = iio_priv(dev_info);
1876 u8 val;
1877 int data;
1878 int ret;
1879
1880 if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
1881 this_attr->address > ADT7316_EX_TEMP_LOW)
1882 return -EPERM;
1883
1884 ret = chip->bus.read(chip->bus.client, this_attr->address, &val);
1885 if (ret)
1886 return -EIO;
1887
1888 data = (int)val;
1889
1890 if (!((chip->id & ID_FAMILY_MASK) == ID_ADT75XX &&
1891 (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0)) {
1892 if (data & 0x80)
1893 data -= 256;
1894 }
1895
1896 return sprintf(buf, "%d\n", data);
1897 }
1898
1899 static inline ssize_t adt7316_set_ad_bound(struct device *dev,
1900 struct device_attribute *attr,
1901 const char *buf,
1902 size_t len)
1903 {
1904 struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
1905 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1906 struct adt7316_chip_info *chip = iio_priv(dev_info);
1907 int data;
1908 u8 val;
1909 int ret;
1910
1911 if ((chip->id & ID_FAMILY_MASK) == ID_ADT73XX &&
1912 this_attr->address > ADT7316_EX_TEMP_LOW)
1913 return -EPERM;
1914
1915 ret = kstrtoint(buf, 10, &data);
1916 if (ret)
1917 return -EINVAL;
1918
1919 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX &&
1920 (chip->config1 & ADT7516_SEL_AIN1_2_EX_TEMP_MASK) == 0) {
1921 if (data > 255 || data < 0)
1922 return -EINVAL;
1923 } else {
1924 if (data > 127 || data < -128)
1925 return -EINVAL;
1926
1927 if (data < 0)
1928 data += 256;
1929 }
1930
1931 val = (u8)data;
1932
1933 ret = chip->bus.write(chip->bus.client, this_attr->address, val);
1934 if (ret)
1935 return -EIO;
1936
1937 return len;
1938 }
1939
1940 static ssize_t adt7316_show_int_enabled(struct device *dev,
1941 struct device_attribute *attr,
1942 char *buf)
1943 {
1944 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1945 struct adt7316_chip_info *chip = iio_priv(dev_info);
1946
1947 return sprintf(buf, "%d\n", !!(chip->config1 & ADT7316_INT_EN));
1948 }
1949
1950 static ssize_t adt7316_set_int_enabled(struct device *dev,
1951 struct device_attribute *attr,
1952 const char *buf,
1953 size_t len)
1954 {
1955 struct iio_dev *dev_info = dev_to_iio_dev(dev);
1956 struct adt7316_chip_info *chip = iio_priv(dev_info);
1957 u8 config1;
1958 int ret;
1959
1960 config1 = chip->config1 & (~ADT7316_INT_EN);
1961 if (buf[0] == '1')
1962 config1 |= ADT7316_INT_EN;
1963
1964 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, config1);
1965 if (ret)
1966 return -EIO;
1967
1968 chip->config1 = config1;
1969
1970 return len;
1971 }
1972
1973 static IIO_DEVICE_ATTR(int_mask,
1974 S_IRUGO | S_IWUSR,
1975 adt7316_show_int_mask, adt7316_set_int_mask,
1976 0);
1977 static IIO_DEVICE_ATTR(in_temp_high_value,
1978 S_IRUGO | S_IWUSR,
1979 adt7316_show_ad_bound, adt7316_set_ad_bound,
1980 ADT7316_IN_TEMP_HIGH);
1981 static IIO_DEVICE_ATTR(in_temp_low_value,
1982 S_IRUGO | S_IWUSR,
1983 adt7316_show_ad_bound, adt7316_set_ad_bound,
1984 ADT7316_IN_TEMP_LOW);
1985 static IIO_DEVICE_ATTR(ex_temp_high_value,
1986 S_IRUGO | S_IWUSR,
1987 adt7316_show_ad_bound, adt7316_set_ad_bound,
1988 ADT7316_EX_TEMP_HIGH);
1989 static IIO_DEVICE_ATTR(ex_temp_low_value,
1990 S_IRUGO | S_IWUSR,
1991 adt7316_show_ad_bound, adt7316_set_ad_bound,
1992 ADT7316_EX_TEMP_LOW);
1993
1994 /* NASTY duplication to be fixed */
1995 static IIO_DEVICE_ATTR(ex_temp_ain1_high_value,
1996 S_IRUGO | S_IWUSR,
1997 adt7316_show_ad_bound, adt7316_set_ad_bound,
1998 ADT7316_EX_TEMP_HIGH);
1999 static IIO_DEVICE_ATTR(ex_temp_ain1_low_value,
2000 S_IRUGO | S_IWUSR,
2001 adt7316_show_ad_bound, adt7316_set_ad_bound,
2002 ADT7316_EX_TEMP_LOW);
2003 static IIO_DEVICE_ATTR(ain2_high_value,
2004 S_IRUGO | S_IWUSR,
2005 adt7316_show_ad_bound, adt7316_set_ad_bound,
2006 ADT7516_AIN2_HIGH);
2007 static IIO_DEVICE_ATTR(ain2_low_value,
2008 S_IRUGO | S_IWUSR,
2009 adt7316_show_ad_bound, adt7316_set_ad_bound,
2010 ADT7516_AIN2_LOW);
2011 static IIO_DEVICE_ATTR(ain3_high_value,
2012 S_IRUGO | S_IWUSR,
2013 adt7316_show_ad_bound, adt7316_set_ad_bound,
2014 ADT7516_AIN3_HIGH);
2015 static IIO_DEVICE_ATTR(ain3_low_value,
2016 S_IRUGO | S_IWUSR,
2017 adt7316_show_ad_bound, adt7316_set_ad_bound,
2018 ADT7516_AIN3_LOW);
2019 static IIO_DEVICE_ATTR(ain4_high_value,
2020 S_IRUGO | S_IWUSR,
2021 adt7316_show_ad_bound, adt7316_set_ad_bound,
2022 ADT7516_AIN4_HIGH);
2023 static IIO_DEVICE_ATTR(ain4_low_value,
2024 S_IRUGO | S_IWUSR,
2025 adt7316_show_ad_bound, adt7316_set_ad_bound,
2026 ADT7516_AIN4_LOW);
2027 static IIO_DEVICE_ATTR(int_enabled,
2028 S_IRUGO | S_IWUSR,
2029 adt7316_show_int_enabled,
2030 adt7316_set_int_enabled, 0);
2031
2032 static struct attribute *adt7316_event_attributes[] = {
2033 &iio_dev_attr_int_mask.dev_attr.attr,
2034 &iio_dev_attr_in_temp_high_value.dev_attr.attr,
2035 &iio_dev_attr_in_temp_low_value.dev_attr.attr,
2036 &iio_dev_attr_ex_temp_high_value.dev_attr.attr,
2037 &iio_dev_attr_ex_temp_low_value.dev_attr.attr,
2038 &iio_dev_attr_int_enabled.dev_attr.attr,
2039 NULL,
2040 };
2041
2042 static struct attribute_group adt7316_event_attribute_group = {
2043 .attrs = adt7316_event_attributes,
2044 .name = "events",
2045 };
2046
2047 static struct attribute *adt7516_event_attributes[] = {
2048 &iio_dev_attr_int_mask.dev_attr.attr,
2049 &iio_dev_attr_in_temp_high_value.dev_attr.attr,
2050 &iio_dev_attr_in_temp_low_value.dev_attr.attr,
2051 &iio_dev_attr_ex_temp_ain1_high_value.dev_attr.attr,
2052 &iio_dev_attr_ex_temp_ain1_low_value.dev_attr.attr,
2053 &iio_dev_attr_ain2_high_value.dev_attr.attr,
2054 &iio_dev_attr_ain2_low_value.dev_attr.attr,
2055 &iio_dev_attr_ain3_high_value.dev_attr.attr,
2056 &iio_dev_attr_ain3_low_value.dev_attr.attr,
2057 &iio_dev_attr_ain4_high_value.dev_attr.attr,
2058 &iio_dev_attr_ain4_low_value.dev_attr.attr,
2059 &iio_dev_attr_int_enabled.dev_attr.attr,
2060 NULL,
2061 };
2062
2063 static struct attribute_group adt7516_event_attribute_group = {
2064 .attrs = adt7516_event_attributes,
2065 .name = "events",
2066 };
2067
2068 #ifdef CONFIG_PM_SLEEP
2069 static int adt7316_disable(struct device *dev)
2070 {
2071 struct iio_dev *dev_info = dev_get_drvdata(dev);
2072 struct adt7316_chip_info *chip = iio_priv(dev_info);
2073
2074 return _adt7316_store_enabled(chip, 0);
2075 }
2076
2077 static int adt7316_enable(struct device *dev)
2078 {
2079 struct iio_dev *dev_info = dev_get_drvdata(dev);
2080 struct adt7316_chip_info *chip = iio_priv(dev_info);
2081
2082 return _adt7316_store_enabled(chip, 1);
2083 }
2084
2085 SIMPLE_DEV_PM_OPS(adt7316_pm_ops, adt7316_disable, adt7316_enable);
2086 EXPORT_SYMBOL_GPL(adt7316_pm_ops);
2087 #endif
2088
2089 static const struct iio_info adt7316_info = {
2090 .attrs = &adt7316_attribute_group,
2091 .event_attrs = &adt7316_event_attribute_group,
2092 .driver_module = THIS_MODULE,
2093 };
2094
2095 static const struct iio_info adt7516_info = {
2096 .attrs = &adt7516_attribute_group,
2097 .event_attrs = &adt7516_event_attribute_group,
2098 .driver_module = THIS_MODULE,
2099 };
2100
2101 /*
2102 * device probe and remove
2103 */
2104 int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
2105 const char *name)
2106 {
2107 struct adt7316_chip_info *chip;
2108 struct iio_dev *indio_dev;
2109 unsigned short *adt7316_platform_data = dev->platform_data;
2110 int ret = 0;
2111
2112 indio_dev = devm_iio_device_alloc(dev, sizeof(*chip));
2113 if (!indio_dev)
2114 return -ENOMEM;
2115 chip = iio_priv(indio_dev);
2116 /* this is only used for device removal purposes */
2117 dev_set_drvdata(dev, indio_dev);
2118
2119 chip->bus = *bus;
2120
2121 if (name[4] == '3')
2122 chip->id = ID_ADT7316 + (name[6] - '6');
2123 else if (name[4] == '5')
2124 chip->id = ID_ADT7516 + (name[6] - '6');
2125 else
2126 return -ENODEV;
2127
2128 chip->ldac_pin = adt7316_platform_data[1];
2129 if (chip->ldac_pin) {
2130 chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDCA;
2131 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
2132 chip->config1 |= ADT7516_SEL_AIN3;
2133 }
2134 chip->int_mask = ADT7316_TEMP_INT_MASK | ADT7316_VDD_INT_MASK;
2135 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
2136 chip->int_mask |= ADT7516_AIN_INT_MASK;
2137
2138 indio_dev->dev.parent = dev;
2139 if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
2140 indio_dev->info = &adt7516_info;
2141 else
2142 indio_dev->info = &adt7316_info;
2143 indio_dev->name = name;
2144 indio_dev->modes = INDIO_DIRECT_MODE;
2145
2146 if (chip->bus.irq > 0) {
2147 if (adt7316_platform_data[0])
2148 chip->bus.irq_flags = adt7316_platform_data[0];
2149
2150 ret = devm_request_threaded_irq(dev, chip->bus.irq,
2151 NULL,
2152 adt7316_event_handler,
2153 chip->bus.irq_flags |
2154 IRQF_ONESHOT,
2155 indio_dev->name,
2156 indio_dev);
2157 if (ret)
2158 return ret;
2159
2160 if (chip->bus.irq_flags & IRQF_TRIGGER_HIGH)
2161 chip->config1 |= ADT7316_INT_POLARITY;
2162 }
2163
2164 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, chip->config1);
2165 if (ret)
2166 return -EIO;
2167
2168 ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG3, chip->config3);
2169 if (ret)
2170 return -EIO;
2171
2172 ret = devm_iio_device_register(dev, indio_dev);
2173 if (ret)
2174 return ret;
2175
2176 dev_info(dev, "%s temperature sensor, ADC and DAC registered.\n",
2177 indio_dev->name);
2178
2179 return 0;
2180 }
2181 EXPORT_SYMBOL(adt7316_probe);
2182
2183 MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
2184 MODULE_DESCRIPTION("Analog Devices ADT7316/7/8 and ADT7516/7/9 digital temperature sensor, ADC and DAC driver");
2185 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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