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Merge tag 'vfio-v3.18-rc1' of git://github.com/awilliam/linux-vfio
[deliverable/linux.git] / drivers / iio / accel / kxcjk-1013.c
1 /*
2 * KXCJK-1013 3-axis accelerometer driver
3 * Copyright (c) 2014, Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 */
14
15 #include <linux/module.h>
16 #include <linux/i2c.h>
17 #include <linux/interrupt.h>
18 #include <linux/delay.h>
19 #include <linux/bitops.h>
20 #include <linux/slab.h>
21 #include <linux/string.h>
22 #include <linux/acpi.h>
23 #include <linux/gpio/consumer.h>
24 #include <linux/pm.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/iio/iio.h>
27 #include <linux/iio/sysfs.h>
28 #include <linux/iio/buffer.h>
29 #include <linux/iio/trigger.h>
30 #include <linux/iio/events.h>
31 #include <linux/iio/trigger_consumer.h>
32 #include <linux/iio/triggered_buffer.h>
33 #include <linux/iio/accel/kxcjk_1013.h>
34
35 #define KXCJK1013_DRV_NAME "kxcjk1013"
36 #define KXCJK1013_IRQ_NAME "kxcjk1013_event"
37
38 #define KXCJK1013_REG_XOUT_L 0x06
39 /*
40 * From low byte X axis register, all the other addresses of Y and Z can be
41 * obtained by just applying axis offset. The following axis defines are just
42 * provide clarity, but not used.
43 */
44 #define KXCJK1013_REG_XOUT_H 0x07
45 #define KXCJK1013_REG_YOUT_L 0x08
46 #define KXCJK1013_REG_YOUT_H 0x09
47 #define KXCJK1013_REG_ZOUT_L 0x0A
48 #define KXCJK1013_REG_ZOUT_H 0x0B
49
50 #define KXCJK1013_REG_DCST_RESP 0x0C
51 #define KXCJK1013_REG_WHO_AM_I 0x0F
52 #define KXCJK1013_REG_INT_SRC1 0x16
53 #define KXCJK1013_REG_INT_SRC2 0x17
54 #define KXCJK1013_REG_STATUS_REG 0x18
55 #define KXCJK1013_REG_INT_REL 0x1A
56 #define KXCJK1013_REG_CTRL1 0x1B
57 #define KXCJK1013_REG_CTRL2 0x1D
58 #define KXCJK1013_REG_INT_CTRL1 0x1E
59 #define KXCJK1013_REG_INT_CTRL2 0x1F
60 #define KXCJK1013_REG_DATA_CTRL 0x21
61 #define KXCJK1013_REG_WAKE_TIMER 0x29
62 #define KXCJK1013_REG_SELF_TEST 0x3A
63 #define KXCJK1013_REG_WAKE_THRES 0x6A
64
65 #define KXCJK1013_REG_CTRL1_BIT_PC1 BIT(7)
66 #define KXCJK1013_REG_CTRL1_BIT_RES BIT(6)
67 #define KXCJK1013_REG_CTRL1_BIT_DRDY BIT(5)
68 #define KXCJK1013_REG_CTRL1_BIT_GSEL1 BIT(4)
69 #define KXCJK1013_REG_CTRL1_BIT_GSEL0 BIT(3)
70 #define KXCJK1013_REG_CTRL1_BIT_WUFE BIT(1)
71 #define KXCJK1013_REG_INT_REG1_BIT_IEA BIT(4)
72 #define KXCJK1013_REG_INT_REG1_BIT_IEN BIT(5)
73
74 #define KXCJK1013_DATA_MASK_12_BIT 0x0FFF
75 #define KXCJK1013_MAX_STARTUP_TIME_US 100000
76
77 #define KXCJK1013_SLEEP_DELAY_MS 2000
78
79 #define KXCJK1013_REG_INT_SRC2_BIT_ZP BIT(0)
80 #define KXCJK1013_REG_INT_SRC2_BIT_ZN BIT(1)
81 #define KXCJK1013_REG_INT_SRC2_BIT_YP BIT(2)
82 #define KXCJK1013_REG_INT_SRC2_BIT_YN BIT(3)
83 #define KXCJK1013_REG_INT_SRC2_BIT_XP BIT(4)
84 #define KXCJK1013_REG_INT_SRC2_BIT_XN BIT(5)
85
86 #define KXCJK1013_DEFAULT_WAKE_THRES 1
87
88 enum kx_chipset {
89 KXCJK1013,
90 KXCJ91008,
91 KXTJ21009,
92 KX_MAX_CHIPS /* this must be last */
93 };
94
95 struct kxcjk1013_data {
96 struct i2c_client *client;
97 struct iio_trigger *dready_trig;
98 struct iio_trigger *motion_trig;
99 struct mutex mutex;
100 s16 buffer[8];
101 u8 odr_bits;
102 u8 range;
103 int wake_thres;
104 int wake_dur;
105 bool active_high_intr;
106 bool dready_trigger_on;
107 int ev_enable_state;
108 bool motion_trigger_on;
109 int64_t timestamp;
110 enum kx_chipset chipset;
111 };
112
113 enum kxcjk1013_axis {
114 AXIS_X,
115 AXIS_Y,
116 AXIS_Z,
117 };
118
119 enum kxcjk1013_mode {
120 STANDBY,
121 OPERATION,
122 };
123
124 enum kxcjk1013_range {
125 KXCJK1013_RANGE_2G,
126 KXCJK1013_RANGE_4G,
127 KXCJK1013_RANGE_8G,
128 };
129
130 static const struct {
131 int val;
132 int val2;
133 int odr_bits;
134 } samp_freq_table[] = { {0, 781000, 0x08}, {1, 563000, 0x09},
135 {3, 125000, 0x0A}, {6, 250000, 0x0B}, {12, 500000, 0},
136 {25, 0, 0x01}, {50, 0, 0x02}, {100, 0, 0x03},
137 {200, 0, 0x04}, {400, 0, 0x05}, {800, 0, 0x06},
138 {1600, 0, 0x07} };
139
140 /* Refer to section 4 of the specification */
141 static const struct {
142 int odr_bits;
143 int usec;
144 } odr_start_up_times[KX_MAX_CHIPS][12] = {
145 /* KXCJK-1013 */
146 {
147 {0x08, 100000},
148 {0x09, 100000},
149 {0x0A, 100000},
150 {0x0B, 100000},
151 {0, 80000},
152 {0x01, 41000},
153 {0x02, 21000},
154 {0x03, 11000},
155 {0x04, 6400},
156 {0x05, 3900},
157 {0x06, 2700},
158 {0x07, 2100},
159 },
160 /* KXCJ9-1008 */
161 {
162 {0x08, 100000},
163 {0x09, 100000},
164 {0x0A, 100000},
165 {0x0B, 100000},
166 {0, 80000},
167 {0x01, 41000},
168 {0x02, 21000},
169 {0x03, 11000},
170 {0x04, 6400},
171 {0x05, 3900},
172 {0x06, 2700},
173 {0x07, 2100},
174 },
175 /* KXCTJ2-1009 */
176 {
177 {0x08, 1240000},
178 {0x09, 621000},
179 {0x0A, 309000},
180 {0x0B, 151000},
181 {0, 80000},
182 {0x01, 41000},
183 {0x02, 21000},
184 {0x03, 11000},
185 {0x04, 6000},
186 {0x05, 4000},
187 {0x06, 3000},
188 {0x07, 2000},
189 },
190 };
191
192 static const struct {
193 u16 scale;
194 u8 gsel_0;
195 u8 gsel_1;
196 } KXCJK1013_scale_table[] = { {9582, 0, 0},
197 {19163, 1, 0},
198 {38326, 0, 1} };
199
200 static const struct {
201 int val;
202 int val2;
203 int odr_bits;
204 } wake_odr_data_rate_table[] = { {0, 781000, 0x00},
205 {1, 563000, 0x01},
206 {3, 125000, 0x02},
207 {6, 250000, 0x03},
208 {12, 500000, 0x04},
209 {25, 0, 0x05},
210 {50, 0, 0x06},
211 {100, 0, 0x06},
212 {200, 0, 0x06},
213 {400, 0, 0x06},
214 {800, 0, 0x06},
215 {1600, 0, 0x06} };
216
217 static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
218 enum kxcjk1013_mode mode)
219 {
220 int ret;
221
222 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
223 if (ret < 0) {
224 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
225 return ret;
226 }
227
228 if (mode == STANDBY)
229 ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1;
230 else
231 ret |= KXCJK1013_REG_CTRL1_BIT_PC1;
232
233 ret = i2c_smbus_write_byte_data(data->client,
234 KXCJK1013_REG_CTRL1, ret);
235 if (ret < 0) {
236 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
237 return ret;
238 }
239
240 return 0;
241 }
242
243 static int kxcjk1013_get_mode(struct kxcjk1013_data *data,
244 enum kxcjk1013_mode *mode)
245 {
246 int ret;
247
248 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
249 if (ret < 0) {
250 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
251 return ret;
252 }
253
254 if (ret & KXCJK1013_REG_CTRL1_BIT_PC1)
255 *mode = OPERATION;
256 else
257 *mode = STANDBY;
258
259 return 0;
260 }
261
262 static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
263 {
264 int ret;
265
266 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
267 if (ret < 0) {
268 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
269 return ret;
270 }
271
272 ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3);
273 ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4);
274
275 ret = i2c_smbus_write_byte_data(data->client,
276 KXCJK1013_REG_CTRL1,
277 ret);
278 if (ret < 0) {
279 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
280 return ret;
281 }
282
283 data->range = range_index;
284
285 return 0;
286 }
287
288 static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
289 {
290 int ret;
291
292 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I);
293 if (ret < 0) {
294 dev_err(&data->client->dev, "Error reading who_am_i\n");
295 return ret;
296 }
297
298 dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret);
299
300 ret = kxcjk1013_set_mode(data, STANDBY);
301 if (ret < 0)
302 return ret;
303
304 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
305 if (ret < 0) {
306 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
307 return ret;
308 }
309
310 /* Set 12 bit mode */
311 ret |= KXCJK1013_REG_CTRL1_BIT_RES;
312
313 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1,
314 ret);
315 if (ret < 0) {
316 dev_err(&data->client->dev, "Error reading reg_ctrl\n");
317 return ret;
318 }
319
320 /* Setting range to 4G */
321 ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G);
322 if (ret < 0)
323 return ret;
324
325 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL);
326 if (ret < 0) {
327 dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
328 return ret;
329 }
330
331 data->odr_bits = ret;
332
333 /* Set up INT polarity */
334 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
335 if (ret < 0) {
336 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
337 return ret;
338 }
339
340 if (data->active_high_intr)
341 ret |= KXCJK1013_REG_INT_REG1_BIT_IEA;
342 else
343 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEA;
344
345 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
346 ret);
347 if (ret < 0) {
348 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
349 return ret;
350 }
351
352 ret = kxcjk1013_set_mode(data, OPERATION);
353 if (ret < 0)
354 return ret;
355
356 data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES;
357
358 return 0;
359 }
360
361 #ifdef CONFIG_PM_RUNTIME
362 static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
363 {
364 int i;
365 int idx = data->chipset;
366
367 for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) {
368 if (odr_start_up_times[idx][i].odr_bits == data->odr_bits)
369 return odr_start_up_times[idx][i].usec;
370 }
371
372 return KXCJK1013_MAX_STARTUP_TIME_US;
373 }
374 #endif
375
376 static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
377 {
378 int ret;
379
380 if (on)
381 ret = pm_runtime_get_sync(&data->client->dev);
382 else {
383 pm_runtime_mark_last_busy(&data->client->dev);
384 ret = pm_runtime_put_autosuspend(&data->client->dev);
385 }
386 if (ret < 0) {
387 dev_err(&data->client->dev,
388 "Failed: kxcjk1013_set_power_state for %d\n", on);
389 return ret;
390 }
391
392 return 0;
393 }
394
395 static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
396 {
397 int ret;
398
399 ret = i2c_smbus_write_byte_data(data->client,
400 KXCJK1013_REG_WAKE_TIMER,
401 data->wake_dur);
402 if (ret < 0) {
403 dev_err(&data->client->dev,
404 "Error writing reg_wake_timer\n");
405 return ret;
406 }
407
408 ret = i2c_smbus_write_byte_data(data->client,
409 KXCJK1013_REG_WAKE_THRES,
410 data->wake_thres);
411 if (ret < 0) {
412 dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
413 return ret;
414 }
415
416 return 0;
417 }
418
419 static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
420 bool status)
421 {
422 int ret;
423 enum kxcjk1013_mode store_mode;
424
425 ret = kxcjk1013_get_mode(data, &store_mode);
426 if (ret < 0)
427 return ret;
428
429 /* This is requirement by spec to change state to STANDBY */
430 ret = kxcjk1013_set_mode(data, STANDBY);
431 if (ret < 0)
432 return ret;
433
434 ret = kxcjk1013_chip_update_thresholds(data);
435 if (ret < 0)
436 return ret;
437
438 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
439 if (ret < 0) {
440 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
441 return ret;
442 }
443
444 if (status)
445 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
446 else
447 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;
448
449 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
450 ret);
451 if (ret < 0) {
452 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
453 return ret;
454 }
455
456 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
457 if (ret < 0) {
458 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
459 return ret;
460 }
461
462 if (status)
463 ret |= KXCJK1013_REG_CTRL1_BIT_WUFE;
464 else
465 ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE;
466
467 ret = i2c_smbus_write_byte_data(data->client,
468 KXCJK1013_REG_CTRL1, ret);
469 if (ret < 0) {
470 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
471 return ret;
472 }
473
474 if (store_mode == OPERATION) {
475 ret = kxcjk1013_set_mode(data, OPERATION);
476 if (ret < 0)
477 return ret;
478 }
479
480 return 0;
481 }
482
483 static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
484 bool status)
485 {
486 int ret;
487 enum kxcjk1013_mode store_mode;
488
489 ret = kxcjk1013_get_mode(data, &store_mode);
490 if (ret < 0)
491 return ret;
492
493 /* This is requirement by spec to change state to STANDBY */
494 ret = kxcjk1013_set_mode(data, STANDBY);
495 if (ret < 0)
496 return ret;
497
498 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
499 if (ret < 0) {
500 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
501 return ret;
502 }
503
504 if (status)
505 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
506 else
507 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;
508
509 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
510 ret);
511 if (ret < 0) {
512 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
513 return ret;
514 }
515
516 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
517 if (ret < 0) {
518 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
519 return ret;
520 }
521
522 if (status)
523 ret |= KXCJK1013_REG_CTRL1_BIT_DRDY;
524 else
525 ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY;
526
527 ret = i2c_smbus_write_byte_data(data->client,
528 KXCJK1013_REG_CTRL1, ret);
529 if (ret < 0) {
530 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
531 return ret;
532 }
533
534 if (store_mode == OPERATION) {
535 ret = kxcjk1013_set_mode(data, OPERATION);
536 if (ret < 0)
537 return ret;
538 }
539
540 return 0;
541 }
542
543 static int kxcjk1013_convert_freq_to_bit(int val, int val2)
544 {
545 int i;
546
547 for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
548 if (samp_freq_table[i].val == val &&
549 samp_freq_table[i].val2 == val2) {
550 return samp_freq_table[i].odr_bits;
551 }
552 }
553
554 return -EINVAL;
555 }
556
557 static int kxcjk1013_convert_wake_odr_to_bit(int val, int val2)
558 {
559 int i;
560
561 for (i = 0; i < ARRAY_SIZE(wake_odr_data_rate_table); ++i) {
562 if (wake_odr_data_rate_table[i].val == val &&
563 wake_odr_data_rate_table[i].val2 == val2) {
564 return wake_odr_data_rate_table[i].odr_bits;
565 }
566 }
567
568 return -EINVAL;
569 }
570
571 static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
572 {
573 int ret;
574 int odr_bits;
575 enum kxcjk1013_mode store_mode;
576
577 ret = kxcjk1013_get_mode(data, &store_mode);
578 if (ret < 0)
579 return ret;
580
581 odr_bits = kxcjk1013_convert_freq_to_bit(val, val2);
582 if (odr_bits < 0)
583 return odr_bits;
584
585 /* To change ODR, the chip must be set to STANDBY as per spec */
586 ret = kxcjk1013_set_mode(data, STANDBY);
587 if (ret < 0)
588 return ret;
589
590 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL,
591 odr_bits);
592 if (ret < 0) {
593 dev_err(&data->client->dev, "Error writing data_ctrl\n");
594 return ret;
595 }
596
597 data->odr_bits = odr_bits;
598
599 odr_bits = kxcjk1013_convert_wake_odr_to_bit(val, val2);
600 if (odr_bits < 0)
601 return odr_bits;
602
603 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2,
604 odr_bits);
605 if (ret < 0) {
606 dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
607 return ret;
608 }
609
610 if (store_mode == OPERATION) {
611 ret = kxcjk1013_set_mode(data, OPERATION);
612 if (ret < 0)
613 return ret;
614 }
615
616 return 0;
617 }
618
619 static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
620 {
621 int i;
622
623 for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
624 if (samp_freq_table[i].odr_bits == data->odr_bits) {
625 *val = samp_freq_table[i].val;
626 *val2 = samp_freq_table[i].val2;
627 return IIO_VAL_INT_PLUS_MICRO;
628 }
629 }
630
631 return -EINVAL;
632 }
633
634 static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
635 {
636 u8 reg = KXCJK1013_REG_XOUT_L + axis * 2;
637 int ret;
638
639 ret = i2c_smbus_read_word_data(data->client, reg);
640 if (ret < 0) {
641 dev_err(&data->client->dev,
642 "failed to read accel_%c registers\n", 'x' + axis);
643 return ret;
644 }
645
646 return ret;
647 }
648
649 static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val)
650 {
651 int ret, i;
652 enum kxcjk1013_mode store_mode;
653
654
655 for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) {
656 if (KXCJK1013_scale_table[i].scale == val) {
657
658 ret = kxcjk1013_get_mode(data, &store_mode);
659 if (ret < 0)
660 return ret;
661
662 ret = kxcjk1013_set_mode(data, STANDBY);
663 if (ret < 0)
664 return ret;
665
666 ret = kxcjk1013_set_range(data, i);
667 if (ret < 0)
668 return ret;
669
670 if (store_mode == OPERATION) {
671 ret = kxcjk1013_set_mode(data, OPERATION);
672 if (ret)
673 return ret;
674 }
675
676 return 0;
677 }
678 }
679
680 return -EINVAL;
681 }
682
683 static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
684 struct iio_chan_spec const *chan, int *val,
685 int *val2, long mask)
686 {
687 struct kxcjk1013_data *data = iio_priv(indio_dev);
688 int ret;
689
690 switch (mask) {
691 case IIO_CHAN_INFO_RAW:
692 mutex_lock(&data->mutex);
693 if (iio_buffer_enabled(indio_dev))
694 ret = -EBUSY;
695 else {
696 ret = kxcjk1013_set_power_state(data, true);
697 if (ret < 0) {
698 mutex_unlock(&data->mutex);
699 return ret;
700 }
701 ret = kxcjk1013_get_acc_reg(data, chan->scan_index);
702 if (ret < 0) {
703 kxcjk1013_set_power_state(data, false);
704 mutex_unlock(&data->mutex);
705 return ret;
706 }
707 *val = sign_extend32(ret >> 4, 11);
708 ret = kxcjk1013_set_power_state(data, false);
709 }
710 mutex_unlock(&data->mutex);
711
712 if (ret < 0)
713 return ret;
714
715 return IIO_VAL_INT;
716
717 case IIO_CHAN_INFO_SCALE:
718 *val = 0;
719 *val2 = KXCJK1013_scale_table[data->range].scale;
720 return IIO_VAL_INT_PLUS_MICRO;
721
722 case IIO_CHAN_INFO_SAMP_FREQ:
723 mutex_lock(&data->mutex);
724 ret = kxcjk1013_get_odr(data, val, val2);
725 mutex_unlock(&data->mutex);
726 return ret;
727
728 default:
729 return -EINVAL;
730 }
731 }
732
733 static int kxcjk1013_write_raw(struct iio_dev *indio_dev,
734 struct iio_chan_spec const *chan, int val,
735 int val2, long mask)
736 {
737 struct kxcjk1013_data *data = iio_priv(indio_dev);
738 int ret;
739
740 switch (mask) {
741 case IIO_CHAN_INFO_SAMP_FREQ:
742 mutex_lock(&data->mutex);
743 ret = kxcjk1013_set_odr(data, val, val2);
744 mutex_unlock(&data->mutex);
745 break;
746 case IIO_CHAN_INFO_SCALE:
747 if (val)
748 return -EINVAL;
749
750 mutex_lock(&data->mutex);
751 ret = kxcjk1013_set_scale(data, val2);
752 mutex_unlock(&data->mutex);
753 break;
754 default:
755 ret = -EINVAL;
756 }
757
758 return ret;
759 }
760
761 static int kxcjk1013_read_event(struct iio_dev *indio_dev,
762 const struct iio_chan_spec *chan,
763 enum iio_event_type type,
764 enum iio_event_direction dir,
765 enum iio_event_info info,
766 int *val, int *val2)
767 {
768 struct kxcjk1013_data *data = iio_priv(indio_dev);
769
770 *val2 = 0;
771 switch (info) {
772 case IIO_EV_INFO_VALUE:
773 *val = data->wake_thres;
774 break;
775 case IIO_EV_INFO_PERIOD:
776 *val = data->wake_dur;
777 break;
778 default:
779 return -EINVAL;
780 }
781
782 return IIO_VAL_INT;
783 }
784
785 static int kxcjk1013_write_event(struct iio_dev *indio_dev,
786 const struct iio_chan_spec *chan,
787 enum iio_event_type type,
788 enum iio_event_direction dir,
789 enum iio_event_info info,
790 int val, int val2)
791 {
792 struct kxcjk1013_data *data = iio_priv(indio_dev);
793
794 if (data->ev_enable_state)
795 return -EBUSY;
796
797 switch (info) {
798 case IIO_EV_INFO_VALUE:
799 data->wake_thres = val;
800 break;
801 case IIO_EV_INFO_PERIOD:
802 data->wake_dur = val;
803 break;
804 default:
805 return -EINVAL;
806 }
807
808 return 0;
809 }
810
811 static int kxcjk1013_read_event_config(struct iio_dev *indio_dev,
812 const struct iio_chan_spec *chan,
813 enum iio_event_type type,
814 enum iio_event_direction dir)
815 {
816
817 struct kxcjk1013_data *data = iio_priv(indio_dev);
818
819 return data->ev_enable_state;
820 }
821
822 static int kxcjk1013_write_event_config(struct iio_dev *indio_dev,
823 const struct iio_chan_spec *chan,
824 enum iio_event_type type,
825 enum iio_event_direction dir,
826 int state)
827 {
828 struct kxcjk1013_data *data = iio_priv(indio_dev);
829 int ret;
830
831 if (state && data->ev_enable_state)
832 return 0;
833
834 mutex_lock(&data->mutex);
835
836 if (!state && data->motion_trigger_on) {
837 data->ev_enable_state = 0;
838 mutex_unlock(&data->mutex);
839 return 0;
840 }
841
842 /*
843 * We will expect the enable and disable to do operation in
844 * in reverse order. This will happen here anyway as our
845 * resume operation uses sync mode runtime pm calls, the
846 * suspend operation will be delayed by autosuspend delay
847 * So the disable operation will still happen in reverse of
848 * enable operation. When runtime pm is disabled the mode
849 * is always on so sequence doesn't matter
850 */
851 ret = kxcjk1013_set_power_state(data, state);
852 if (ret < 0) {
853 mutex_unlock(&data->mutex);
854 return ret;
855 }
856
857 ret = kxcjk1013_setup_any_motion_interrupt(data, state);
858 if (ret < 0) {
859 mutex_unlock(&data->mutex);
860 return ret;
861 }
862
863 data->ev_enable_state = state;
864 mutex_unlock(&data->mutex);
865
866 return 0;
867 }
868
869 static int kxcjk1013_validate_trigger(struct iio_dev *indio_dev,
870 struct iio_trigger *trig)
871 {
872 struct kxcjk1013_data *data = iio_priv(indio_dev);
873
874 if (data->dready_trig != trig && data->motion_trig != trig)
875 return -EINVAL;
876
877 return 0;
878 }
879
880 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
881 "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600");
882
883 static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326");
884
885 static struct attribute *kxcjk1013_attributes[] = {
886 &iio_const_attr_sampling_frequency_available.dev_attr.attr,
887 &iio_const_attr_in_accel_scale_available.dev_attr.attr,
888 NULL,
889 };
890
891 static const struct attribute_group kxcjk1013_attrs_group = {
892 .attrs = kxcjk1013_attributes,
893 };
894
895 static const struct iio_event_spec kxcjk1013_event = {
896 .type = IIO_EV_TYPE_THRESH,
897 .dir = IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING,
898 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
899 BIT(IIO_EV_INFO_ENABLE) |
900 BIT(IIO_EV_INFO_PERIOD)
901 };
902
903 #define KXCJK1013_CHANNEL(_axis) { \
904 .type = IIO_ACCEL, \
905 .modified = 1, \
906 .channel2 = IIO_MOD_##_axis, \
907 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
908 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
909 BIT(IIO_CHAN_INFO_SAMP_FREQ), \
910 .scan_index = AXIS_##_axis, \
911 .scan_type = { \
912 .sign = 's', \
913 .realbits = 12, \
914 .storagebits = 16, \
915 .shift = 4, \
916 .endianness = IIO_CPU, \
917 }, \
918 .event_spec = &kxcjk1013_event, \
919 .num_event_specs = 1 \
920 }
921
922 static const struct iio_chan_spec kxcjk1013_channels[] = {
923 KXCJK1013_CHANNEL(X),
924 KXCJK1013_CHANNEL(Y),
925 KXCJK1013_CHANNEL(Z),
926 IIO_CHAN_SOFT_TIMESTAMP(3),
927 };
928
929 static const struct iio_info kxcjk1013_info = {
930 .attrs = &kxcjk1013_attrs_group,
931 .read_raw = kxcjk1013_read_raw,
932 .write_raw = kxcjk1013_write_raw,
933 .read_event_value = kxcjk1013_read_event,
934 .write_event_value = kxcjk1013_write_event,
935 .write_event_config = kxcjk1013_write_event_config,
936 .read_event_config = kxcjk1013_read_event_config,
937 .validate_trigger = kxcjk1013_validate_trigger,
938 .driver_module = THIS_MODULE,
939 };
940
941 static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
942 {
943 struct iio_poll_func *pf = p;
944 struct iio_dev *indio_dev = pf->indio_dev;
945 struct kxcjk1013_data *data = iio_priv(indio_dev);
946 int bit, ret, i = 0;
947
948 mutex_lock(&data->mutex);
949
950 for_each_set_bit(bit, indio_dev->buffer->scan_mask,
951 indio_dev->masklength) {
952 ret = kxcjk1013_get_acc_reg(data, bit);
953 if (ret < 0) {
954 mutex_unlock(&data->mutex);
955 goto err;
956 }
957 data->buffer[i++] = ret;
958 }
959 mutex_unlock(&data->mutex);
960
961 iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
962 data->timestamp);
963 err:
964 iio_trigger_notify_done(indio_dev->trig);
965
966 return IRQ_HANDLED;
967 }
968
969 static int kxcjk1013_trig_try_reen(struct iio_trigger *trig)
970 {
971 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
972 struct kxcjk1013_data *data = iio_priv(indio_dev);
973 int ret;
974
975 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
976 if (ret < 0) {
977 dev_err(&data->client->dev, "Error reading reg_int_rel\n");
978 return ret;
979 }
980
981 return 0;
982 }
983
984 static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
985 bool state)
986 {
987 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
988 struct kxcjk1013_data *data = iio_priv(indio_dev);
989 int ret;
990
991 mutex_lock(&data->mutex);
992
993 if (!state && data->ev_enable_state && data->motion_trigger_on) {
994 data->motion_trigger_on = false;
995 mutex_unlock(&data->mutex);
996 return 0;
997 }
998
999 ret = kxcjk1013_set_power_state(data, state);
1000 if (ret < 0) {
1001 mutex_unlock(&data->mutex);
1002 return ret;
1003 }
1004 if (data->motion_trig == trig)
1005 ret = kxcjk1013_setup_any_motion_interrupt(data, state);
1006 else
1007 ret = kxcjk1013_setup_new_data_interrupt(data, state);
1008 if (ret < 0) {
1009 mutex_unlock(&data->mutex);
1010 return ret;
1011 }
1012 if (data->motion_trig == trig)
1013 data->motion_trigger_on = state;
1014 else
1015 data->dready_trigger_on = state;
1016
1017 mutex_unlock(&data->mutex);
1018
1019 return 0;
1020 }
1021
1022 static const struct iio_trigger_ops kxcjk1013_trigger_ops = {
1023 .set_trigger_state = kxcjk1013_data_rdy_trigger_set_state,
1024 .try_reenable = kxcjk1013_trig_try_reen,
1025 .owner = THIS_MODULE,
1026 };
1027
1028 static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
1029 {
1030 struct iio_dev *indio_dev = private;
1031 struct kxcjk1013_data *data = iio_priv(indio_dev);
1032 int ret;
1033
1034 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1);
1035 if (ret < 0) {
1036 dev_err(&data->client->dev, "Error reading reg_int_src1\n");
1037 goto ack_intr;
1038 }
1039
1040 if (ret & 0x02) {
1041 ret = i2c_smbus_read_byte_data(data->client,
1042 KXCJK1013_REG_INT_SRC2);
1043 if (ret < 0) {
1044 dev_err(&data->client->dev,
1045 "Error reading reg_int_src2\n");
1046 goto ack_intr;
1047 }
1048
1049 if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN)
1050 iio_push_event(indio_dev,
1051 IIO_MOD_EVENT_CODE(IIO_ACCEL,
1052 0,
1053 IIO_MOD_X,
1054 IIO_EV_TYPE_THRESH,
1055 IIO_EV_DIR_FALLING),
1056 data->timestamp);
1057 if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP)
1058 iio_push_event(indio_dev,
1059 IIO_MOD_EVENT_CODE(IIO_ACCEL,
1060 0,
1061 IIO_MOD_X,
1062 IIO_EV_TYPE_THRESH,
1063 IIO_EV_DIR_RISING),
1064 data->timestamp);
1065
1066
1067 if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN)
1068 iio_push_event(indio_dev,
1069 IIO_MOD_EVENT_CODE(IIO_ACCEL,
1070 0,
1071 IIO_MOD_Y,
1072 IIO_EV_TYPE_THRESH,
1073 IIO_EV_DIR_FALLING),
1074 data->timestamp);
1075 if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP)
1076 iio_push_event(indio_dev,
1077 IIO_MOD_EVENT_CODE(IIO_ACCEL,
1078 0,
1079 IIO_MOD_Y,
1080 IIO_EV_TYPE_THRESH,
1081 IIO_EV_DIR_RISING),
1082 data->timestamp);
1083
1084 if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN)
1085 iio_push_event(indio_dev,
1086 IIO_MOD_EVENT_CODE(IIO_ACCEL,
1087 0,
1088 IIO_MOD_Z,
1089 IIO_EV_TYPE_THRESH,
1090 IIO_EV_DIR_FALLING),
1091 data->timestamp);
1092 if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP)
1093 iio_push_event(indio_dev,
1094 IIO_MOD_EVENT_CODE(IIO_ACCEL,
1095 0,
1096 IIO_MOD_Z,
1097 IIO_EV_TYPE_THRESH,
1098 IIO_EV_DIR_RISING),
1099 data->timestamp);
1100 }
1101
1102 ack_intr:
1103 if (data->dready_trigger_on)
1104 return IRQ_HANDLED;
1105
1106 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
1107 if (ret < 0)
1108 dev_err(&data->client->dev, "Error reading reg_int_rel\n");
1109
1110 return IRQ_HANDLED;
1111 }
1112
1113 static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
1114 {
1115 struct iio_dev *indio_dev = private;
1116 struct kxcjk1013_data *data = iio_priv(indio_dev);
1117
1118 data->timestamp = iio_get_time_ns();
1119
1120 if (data->dready_trigger_on)
1121 iio_trigger_poll(data->dready_trig);
1122 else if (data->motion_trigger_on)
1123 iio_trigger_poll(data->motion_trig);
1124
1125 if (data->ev_enable_state)
1126 return IRQ_WAKE_THREAD;
1127 else
1128 return IRQ_HANDLED;
1129 }
1130
1131 static const char *kxcjk1013_match_acpi_device(struct device *dev,
1132 enum kx_chipset *chipset)
1133 {
1134 const struct acpi_device_id *id;
1135 id = acpi_match_device(dev->driver->acpi_match_table, dev);
1136 if (!id)
1137 return NULL;
1138 *chipset = (enum kx_chipset)id->driver_data;
1139
1140 return dev_name(dev);
1141 }
1142
1143 static int kxcjk1013_gpio_probe(struct i2c_client *client,
1144 struct kxcjk1013_data *data)
1145 {
1146 struct device *dev;
1147 struct gpio_desc *gpio;
1148 int ret;
1149
1150 if (!client)
1151 return -EINVAL;
1152
1153 dev = &client->dev;
1154
1155 /* data ready gpio interrupt pin */
1156 gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0);
1157 if (IS_ERR(gpio)) {
1158 dev_err(dev, "acpi gpio get index failed\n");
1159 return PTR_ERR(gpio);
1160 }
1161
1162 ret = gpiod_direction_input(gpio);
1163 if (ret)
1164 return ret;
1165
1166 ret = gpiod_to_irq(gpio);
1167
1168 dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
1169
1170 return ret;
1171 }
1172
1173 static int kxcjk1013_probe(struct i2c_client *client,
1174 const struct i2c_device_id *id)
1175 {
1176 struct kxcjk1013_data *data;
1177 struct iio_dev *indio_dev;
1178 struct kxcjk_1013_platform_data *pdata;
1179 const char *name;
1180 int ret;
1181
1182 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
1183 if (!indio_dev)
1184 return -ENOMEM;
1185
1186 data = iio_priv(indio_dev);
1187 i2c_set_clientdata(client, indio_dev);
1188 data->client = client;
1189
1190 pdata = dev_get_platdata(&client->dev);
1191 if (pdata)
1192 data->active_high_intr = pdata->active_high_intr;
1193 else
1194 data->active_high_intr = true; /* default polarity */
1195
1196 if (id) {
1197 data->chipset = (enum kx_chipset)(id->driver_data);
1198 name = id->name;
1199 } else if (ACPI_HANDLE(&client->dev)) {
1200 name = kxcjk1013_match_acpi_device(&client->dev,
1201 &data->chipset);
1202 } else
1203 return -ENODEV;
1204
1205 ret = kxcjk1013_chip_init(data);
1206 if (ret < 0)
1207 return ret;
1208
1209 mutex_init(&data->mutex);
1210
1211 indio_dev->dev.parent = &client->dev;
1212 indio_dev->channels = kxcjk1013_channels;
1213 indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
1214 indio_dev->name = name;
1215 indio_dev->modes = INDIO_DIRECT_MODE;
1216 indio_dev->info = &kxcjk1013_info;
1217
1218 if (client->irq < 0)
1219 client->irq = kxcjk1013_gpio_probe(client, data);
1220
1221 if (client->irq >= 0) {
1222 ret = devm_request_threaded_irq(&client->dev, client->irq,
1223 kxcjk1013_data_rdy_trig_poll,
1224 kxcjk1013_event_handler,
1225 IRQF_TRIGGER_RISING,
1226 KXCJK1013_IRQ_NAME,
1227 indio_dev);
1228 if (ret)
1229 return ret;
1230
1231 data->dready_trig = devm_iio_trigger_alloc(&client->dev,
1232 "%s-dev%d",
1233 indio_dev->name,
1234 indio_dev->id);
1235 if (!data->dready_trig)
1236 return -ENOMEM;
1237
1238 data->motion_trig = devm_iio_trigger_alloc(&client->dev,
1239 "%s-any-motion-dev%d",
1240 indio_dev->name,
1241 indio_dev->id);
1242 if (!data->motion_trig)
1243 return -ENOMEM;
1244
1245 data->dready_trig->dev.parent = &client->dev;
1246 data->dready_trig->ops = &kxcjk1013_trigger_ops;
1247 iio_trigger_set_drvdata(data->dready_trig, indio_dev);
1248 indio_dev->trig = data->dready_trig;
1249 iio_trigger_get(indio_dev->trig);
1250 ret = iio_trigger_register(data->dready_trig);
1251 if (ret)
1252 return ret;
1253
1254 data->motion_trig->dev.parent = &client->dev;
1255 data->motion_trig->ops = &kxcjk1013_trigger_ops;
1256 iio_trigger_set_drvdata(data->motion_trig, indio_dev);
1257 ret = iio_trigger_register(data->motion_trig);
1258 if (ret) {
1259 data->motion_trig = NULL;
1260 goto err_trigger_unregister;
1261 }
1262
1263 ret = iio_triggered_buffer_setup(indio_dev,
1264 &iio_pollfunc_store_time,
1265 kxcjk1013_trigger_handler,
1266 NULL);
1267 if (ret < 0) {
1268 dev_err(&client->dev,
1269 "iio triggered buffer setup failed\n");
1270 goto err_trigger_unregister;
1271 }
1272 }
1273
1274 ret = iio_device_register(indio_dev);
1275 if (ret < 0) {
1276 dev_err(&client->dev, "unable to register iio device\n");
1277 goto err_buffer_cleanup;
1278 }
1279
1280 ret = pm_runtime_set_active(&client->dev);
1281 if (ret)
1282 goto err_iio_unregister;
1283
1284 pm_runtime_enable(&client->dev);
1285 pm_runtime_set_autosuspend_delay(&client->dev,
1286 KXCJK1013_SLEEP_DELAY_MS);
1287 pm_runtime_use_autosuspend(&client->dev);
1288
1289 return 0;
1290
1291 err_iio_unregister:
1292 iio_device_unregister(indio_dev);
1293 err_buffer_cleanup:
1294 if (data->dready_trig)
1295 iio_triggered_buffer_cleanup(indio_dev);
1296 err_trigger_unregister:
1297 if (data->dready_trig)
1298 iio_trigger_unregister(data->dready_trig);
1299 if (data->motion_trig)
1300 iio_trigger_unregister(data->motion_trig);
1301
1302 return ret;
1303 }
1304
1305 static int kxcjk1013_remove(struct i2c_client *client)
1306 {
1307 struct iio_dev *indio_dev = i2c_get_clientdata(client);
1308 struct kxcjk1013_data *data = iio_priv(indio_dev);
1309
1310 pm_runtime_disable(&client->dev);
1311 pm_runtime_set_suspended(&client->dev);
1312 pm_runtime_put_noidle(&client->dev);
1313
1314 iio_device_unregister(indio_dev);
1315
1316 if (data->dready_trig) {
1317 iio_triggered_buffer_cleanup(indio_dev);
1318 iio_trigger_unregister(data->dready_trig);
1319 iio_trigger_unregister(data->motion_trig);
1320 }
1321
1322 mutex_lock(&data->mutex);
1323 kxcjk1013_set_mode(data, STANDBY);
1324 mutex_unlock(&data->mutex);
1325
1326 return 0;
1327 }
1328
1329 #ifdef CONFIG_PM_SLEEP
1330 static int kxcjk1013_suspend(struct device *dev)
1331 {
1332 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1333 struct kxcjk1013_data *data = iio_priv(indio_dev);
1334 int ret;
1335
1336 mutex_lock(&data->mutex);
1337 ret = kxcjk1013_set_mode(data, STANDBY);
1338 mutex_unlock(&data->mutex);
1339
1340 return ret;
1341 }
1342
1343 static int kxcjk1013_resume(struct device *dev)
1344 {
1345 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1346 struct kxcjk1013_data *data = iio_priv(indio_dev);
1347 int ret = 0;
1348
1349 mutex_lock(&data->mutex);
1350 /* Check, if the suspend occured while active */
1351 if (data->dready_trigger_on || data->motion_trigger_on ||
1352 data->ev_enable_state)
1353 ret = kxcjk1013_set_mode(data, OPERATION);
1354 mutex_unlock(&data->mutex);
1355
1356 return ret;
1357 }
1358 #endif
1359
1360 #ifdef CONFIG_PM_RUNTIME
1361 static int kxcjk1013_runtime_suspend(struct device *dev)
1362 {
1363 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1364 struct kxcjk1013_data *data = iio_priv(indio_dev);
1365
1366 return kxcjk1013_set_mode(data, STANDBY);
1367 }
1368
1369 static int kxcjk1013_runtime_resume(struct device *dev)
1370 {
1371 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
1372 struct kxcjk1013_data *data = iio_priv(indio_dev);
1373 int ret;
1374 int sleep_val;
1375
1376 ret = kxcjk1013_set_mode(data, OPERATION);
1377 if (ret < 0)
1378 return ret;
1379
1380 sleep_val = kxcjk1013_get_startup_times(data);
1381 if (sleep_val < 20000)
1382 usleep_range(sleep_val, 20000);
1383 else
1384 msleep_interruptible(sleep_val/1000);
1385
1386 return 0;
1387 }
1388 #endif
1389
1390 static const struct dev_pm_ops kxcjk1013_pm_ops = {
1391 SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume)
1392 SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend,
1393 kxcjk1013_runtime_resume, NULL)
1394 };
1395
1396 static const struct acpi_device_id kx_acpi_match[] = {
1397 {"KXCJ1013", KXCJK1013},
1398 {"KXCJ1008", KXCJ91008},
1399 {"KXTJ1009", KXTJ21009},
1400 { },
1401 };
1402 MODULE_DEVICE_TABLE(acpi, kx_acpi_match);
1403
1404 static const struct i2c_device_id kxcjk1013_id[] = {
1405 {"kxcjk1013", KXCJK1013},
1406 {"kxcj91008", KXCJ91008},
1407 {"kxtj21009", KXTJ21009},
1408 {}
1409 };
1410
1411 MODULE_DEVICE_TABLE(i2c, kxcjk1013_id);
1412
1413 static struct i2c_driver kxcjk1013_driver = {
1414 .driver = {
1415 .name = KXCJK1013_DRV_NAME,
1416 .acpi_match_table = ACPI_PTR(kx_acpi_match),
1417 .pm = &kxcjk1013_pm_ops,
1418 },
1419 .probe = kxcjk1013_probe,
1420 .remove = kxcjk1013_remove,
1421 .id_table = kxcjk1013_id,
1422 };
1423 module_i2c_driver(kxcjk1013_driver);
1424
1425 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
1426 MODULE_LICENSE("GPL v2");
1427 MODULE_DESCRIPTION("KXCJK1013 accelerometer driver");
Linux kernel - Deliverables
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