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path: root/drivers/iio/accel/kxcjk-1013.c
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Diffstat (limited to 'drivers/iio/accel/kxcjk-1013.c')
-rw-r--r--drivers/iio/accel/kxcjk-1013.c764
1 files changed, 764 insertions, 0 deletions
diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
new file mode 100644
index 000000000000..7941cf2d31ee
--- /dev/null
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -0,0 +1,764 @@
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/iio/iio.h>
25#include <linux/iio/sysfs.h>
26#include <linux/iio/buffer.h>
27#include <linux/iio/trigger.h>
28#include <linux/iio/trigger_consumer.h>
29#include <linux/iio/triggered_buffer.h>
30#include <linux/iio/accel/kxcjk_1013.h>
31
32#define KXCJK1013_DRV_NAME "kxcjk1013"
33#define KXCJK1013_IRQ_NAME "kxcjk1013_event"
34
35#define KXCJK1013_REG_XOUT_L 0x06
36/*
37 * From low byte X axis register, all the other addresses of Y and Z can be
38 * obtained by just applying axis offset. The following axis defines are just
39 * provide clarity, but not used.
40 */
41#define KXCJK1013_REG_XOUT_H 0x07
42#define KXCJK1013_REG_YOUT_L 0x08
43#define KXCJK1013_REG_YOUT_H 0x09
44#define KXCJK1013_REG_ZOUT_L 0x0A
45#define KXCJK1013_REG_ZOUT_H 0x0B
46
47#define KXCJK1013_REG_DCST_RESP 0x0C
48#define KXCJK1013_REG_WHO_AM_I 0x0F
49#define KXCJK1013_REG_INT_SRC1 0x16
50#define KXCJK1013_REG_INT_SRC2 0x17
51#define KXCJK1013_REG_STATUS_REG 0x18
52#define KXCJK1013_REG_INT_REL 0x1A
53#define KXCJK1013_REG_CTRL1 0x1B
54#define KXCJK1013_REG_CTRL2 0x1D
55#define KXCJK1013_REG_INT_CTRL1 0x1E
56#define KXCJK1013_REG_INT_CTRL2 0x1F
57#define KXCJK1013_REG_DATA_CTRL 0x21
58#define KXCJK1013_REG_WAKE_TIMER 0x29
59#define KXCJK1013_REG_SELF_TEST 0x3A
60#define KXCJK1013_REG_WAKE_THRES 0x6A
61
62#define KXCJK1013_REG_CTRL1_BIT_PC1 BIT(7)
63#define KXCJK1013_REG_CTRL1_BIT_RES BIT(6)
64#define KXCJK1013_REG_CTRL1_BIT_DRDY BIT(5)
65#define KXCJK1013_REG_CTRL1_BIT_GSEL1 BIT(4)
66#define KXCJK1013_REG_CTRL1_BIT_GSEL0 BIT(3)
67#define KXCJK1013_REG_CTRL1_BIT_WUFE BIT(1)
68#define KXCJK1013_REG_INT_REG1_BIT_IEA BIT(4)
69#define KXCJK1013_REG_INT_REG1_BIT_IEN BIT(5)
70
71#define KXCJK1013_DATA_MASK_12_BIT 0x0FFF
72#define KXCJK1013_MAX_STARTUP_TIME_US 100000
73
74struct kxcjk1013_data {
75 struct i2c_client *client;
76 struct iio_trigger *trig;
77 bool trig_mode;
78 struct mutex mutex;
79 s16 buffer[8];
80 int power_state;
81 u8 odr_bits;
82 bool active_high_intr;
83};
84
85enum kxcjk1013_axis {
86 AXIS_X,
87 AXIS_Y,
88 AXIS_Z,
89};
90
91enum kxcjk1013_mode {
92 STANDBY,
93 OPERATION,
94};
95
96static const struct {
97 int val;
98 int val2;
99 int odr_bits;
100} samp_freq_table[] = { {0, 781000, 0x08}, {1, 563000, 0x09},
101 {3, 125000, 0x0A}, {6, 250000, 0x0B}, {12, 500000, 0},
102 {25, 0, 0x01}, {50, 0, 0x02}, {100, 0, 0x03},
103 {200, 0, 0x04}, {400, 0, 0x05}, {800, 0, 0x06},
104 {1600, 0, 0x07} };
105
106/* Refer to section 4 of the specification */
107static const struct {
108 int odr_bits;
109 int usec;
110} odr_start_up_times[] = { {0x08, 100000}, {0x09, 100000}, {0x0A, 100000},
111 {0x0B, 100000}, { 0, 80000}, {0x01, 41000},
112 {0x02, 21000}, {0x03, 11000}, {0x04, 6400},
113 {0x05, 3900}, {0x06, 2700}, {0x07, 2100} };
114
115static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
116 enum kxcjk1013_mode mode)
117{
118 int ret;
119
120 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
121 if (ret < 0) {
122 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
123 return ret;
124 }
125
126 if (mode == STANDBY)
127 ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1;
128 else
129 ret |= KXCJK1013_REG_CTRL1_BIT_PC1;
130
131 ret = i2c_smbus_write_byte_data(data->client,
132 KXCJK1013_REG_CTRL1, ret);
133 if (ret < 0) {
134 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
135 return ret;
136 }
137
138 return 0;
139}
140
141static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
142{
143 int ret;
144
145 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I);
146 if (ret < 0) {
147 dev_err(&data->client->dev, "Error reading who_am_i\n");
148 return ret;
149 }
150
151 dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret);
152
153 ret = kxcjk1013_set_mode(data, STANDBY);
154 if (ret < 0)
155 return ret;
156
157 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
158 if (ret < 0) {
159 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
160 return ret;
161 }
162
163 /* Setting range to 4G */
164 ret |= KXCJK1013_REG_CTRL1_BIT_GSEL0;
165 ret &= ~KXCJK1013_REG_CTRL1_BIT_GSEL1;
166
167 /* Set 12 bit mode */
168 ret |= KXCJK1013_REG_CTRL1_BIT_RES;
169
170 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1,
171 ret);
172 if (ret < 0) {
173 dev_err(&data->client->dev, "Error reading reg_ctrl\n");
174 return ret;
175 }
176
177 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL);
178 if (ret < 0) {
179 dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
180 return ret;
181 }
182
183 data->odr_bits = ret;
184
185 /* Set up INT polarity */
186 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
187 if (ret < 0) {
188 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
189 return ret;
190 }
191
192 if (data->active_high_intr)
193 ret |= KXCJK1013_REG_INT_REG1_BIT_IEA;
194 else
195 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEA;
196
197 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
198 ret);
199 if (ret < 0) {
200 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
201 return ret;
202 }
203
204 return 0;
205}
206
207static int kxcjk1013_chip_setup_interrupt(struct kxcjk1013_data *data,
208 bool status)
209{
210 int ret;
211
212 /* This is requirement by spec to change state to STANDBY */
213 ret = kxcjk1013_set_mode(data, STANDBY);
214 if (ret < 0)
215 return ret;
216
217 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
218 if (ret < 0) {
219 dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
220 return ret;
221 }
222
223 if (status)
224 ret |= KXCJK1013_REG_INT_REG1_BIT_IEN;
225 else
226 ret &= ~KXCJK1013_REG_INT_REG1_BIT_IEN;
227
228 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
229 ret);
230 if (ret < 0) {
231 dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
232 return ret;
233 }
234
235 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
236 if (ret < 0) {
237 dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
238 return ret;
239 }
240
241 if (status)
242 ret |= KXCJK1013_REG_CTRL1_BIT_DRDY;
243 else
244 ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY;
245
246 ret = i2c_smbus_write_byte_data(data->client,
247 KXCJK1013_REG_CTRL1, ret);
248 if (ret < 0) {
249 dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
250 return ret;
251 }
252
253 return ret;
254}
255
256static int kxcjk1013_convert_freq_to_bit(int val, int val2)
257{
258 int i;
259
260 for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
261 if (samp_freq_table[i].val == val &&
262 samp_freq_table[i].val2 == val2) {
263 return samp_freq_table[i].odr_bits;
264 }
265 }
266
267 return -EINVAL;
268}
269
270static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
271{
272 int ret;
273 int odr_bits;
274
275 odr_bits = kxcjk1013_convert_freq_to_bit(val, val2);
276 if (odr_bits < 0)
277 return odr_bits;
278
279 /* To change ODR, the chip must be set to STANDBY as per spec */
280 ret = kxcjk1013_set_mode(data, STANDBY);
281 if (ret < 0)
282 return ret;
283
284 ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL,
285 odr_bits);
286 if (ret < 0) {
287 dev_err(&data->client->dev, "Error writing data_ctrl\n");
288 return ret;
289 }
290
291 data->odr_bits = odr_bits;
292
293 /* Check, if the ODR is changed after data enable */
294 if (data->power_state) {
295 /* Set the state back to operation */
296 ret = kxcjk1013_set_mode(data, OPERATION);
297 if (ret < 0)
298 return ret;
299 }
300
301 return 0;
302}
303
304static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
305{
306 int i;
307
308 for (i = 0; i < ARRAY_SIZE(samp_freq_table); ++i) {
309 if (samp_freq_table[i].odr_bits == data->odr_bits) {
310 *val = samp_freq_table[i].val;
311 *val2 = samp_freq_table[i].val2;
312 return IIO_VAL_INT_PLUS_MICRO;
313 }
314 }
315
316 return -EINVAL;
317}
318
319static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
320{
321 u8 reg = KXCJK1013_REG_XOUT_L + axis * 2;
322 int ret;
323
324 ret = i2c_smbus_read_word_data(data->client, reg);
325 if (ret < 0) {
326 dev_err(&data->client->dev,
327 "failed to read accel_%c registers\n", 'x' + axis);
328 return ret;
329 }
330
331 return ret;
332}
333
334static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
335{
336 int i;
337
338 for (i = 0; i < ARRAY_SIZE(odr_start_up_times); ++i) {
339 if (odr_start_up_times[i].odr_bits == data->odr_bits)
340 return odr_start_up_times[i].usec;
341 }
342
343 return KXCJK1013_MAX_STARTUP_TIME_US;
344}
345
346static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
347 struct iio_chan_spec const *chan, int *val,
348 int *val2, long mask)
349{
350 struct kxcjk1013_data *data = iio_priv(indio_dev);
351 int ret;
352
353 switch (mask) {
354 case IIO_CHAN_INFO_RAW:
355 mutex_lock(&data->mutex);
356 if (iio_buffer_enabled(indio_dev))
357 ret = -EBUSY;
358 else {
359 int sleep_val;
360
361 ret = kxcjk1013_set_mode(data, OPERATION);
362 if (ret < 0) {
363 mutex_unlock(&data->mutex);
364 return ret;
365 }
366 ++data->power_state;
367 sleep_val = kxcjk1013_get_startup_times(data);
368 if (sleep_val < 20000)
369 usleep_range(sleep_val, 20000);
370 else
371 msleep_interruptible(sleep_val/1000);
372 ret = kxcjk1013_get_acc_reg(data, chan->scan_index);
373 if (--data->power_state == 0)
374 kxcjk1013_set_mode(data, STANDBY);
375 }
376 mutex_unlock(&data->mutex);
377
378 if (ret < 0)
379 return ret;
380
381 *val = sign_extend32(ret >> 4, 11);
382 return IIO_VAL_INT;
383
384 case IIO_CHAN_INFO_SCALE:
385 *val = 0;
386 *val2 = 19163; /* range +-4g (4/2047*9.806650) */
387 return IIO_VAL_INT_PLUS_MICRO;
388
389 case IIO_CHAN_INFO_SAMP_FREQ:
390 mutex_lock(&data->mutex);
391 ret = kxcjk1013_get_odr(data, val, val2);
392 mutex_unlock(&data->mutex);
393 return ret;
394
395 default:
396 return -EINVAL;
397 }
398}
399
400static int kxcjk1013_write_raw(struct iio_dev *indio_dev,
401 struct iio_chan_spec const *chan, int val,
402 int val2, long mask)
403{
404 struct kxcjk1013_data *data = iio_priv(indio_dev);
405 int ret;
406
407 switch (mask) {
408 case IIO_CHAN_INFO_SAMP_FREQ:
409 mutex_lock(&data->mutex);
410 ret = kxcjk1013_set_odr(data, val, val2);
411 mutex_unlock(&data->mutex);
412 break;
413 default:
414 ret = -EINVAL;
415 }
416
417 return ret;
418}
419
420static int kxcjk1013_validate_trigger(struct iio_dev *indio_dev,
421 struct iio_trigger *trig)
422{
423 struct kxcjk1013_data *data = iio_priv(indio_dev);
424
425 if (data->trig != trig)
426 return -EINVAL;
427
428 return 0;
429}
430
431static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
432 "0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600");
433
434static struct attribute *kxcjk1013_attributes[] = {
435 &iio_const_attr_sampling_frequency_available.dev_attr.attr,
436 NULL,
437};
438
439static const struct attribute_group kxcjk1013_attrs_group = {
440 .attrs = kxcjk1013_attributes,
441};
442
443#define KXCJK1013_CHANNEL(_axis) { \
444 .type = IIO_ACCEL, \
445 .modified = 1, \
446 .channel2 = IIO_MOD_##_axis, \
447 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
448 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
449 BIT(IIO_CHAN_INFO_SAMP_FREQ), \
450 .scan_index = AXIS_##_axis, \
451 .scan_type = { \
452 .sign = 's', \
453 .realbits = 12, \
454 .storagebits = 16, \
455 .shift = 4, \
456 .endianness = IIO_CPU, \
457 }, \
458}
459
460static const struct iio_chan_spec kxcjk1013_channels[] = {
461 KXCJK1013_CHANNEL(X),
462 KXCJK1013_CHANNEL(Y),
463 KXCJK1013_CHANNEL(Z),
464 IIO_CHAN_SOFT_TIMESTAMP(3),
465};
466
467static const struct iio_info kxcjk1013_info = {
468 .attrs = &kxcjk1013_attrs_group,
469 .read_raw = kxcjk1013_read_raw,
470 .write_raw = kxcjk1013_write_raw,
471 .validate_trigger = kxcjk1013_validate_trigger,
472 .driver_module = THIS_MODULE,
473};
474
475static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
476{
477 struct iio_poll_func *pf = p;
478 struct iio_dev *indio_dev = pf->indio_dev;
479 struct kxcjk1013_data *data = iio_priv(indio_dev);
480 int bit, ret, i = 0;
481
482 mutex_lock(&data->mutex);
483
484 for_each_set_bit(bit, indio_dev->buffer->scan_mask,
485 indio_dev->masklength) {
486 ret = kxcjk1013_get_acc_reg(data, bit);
487 if (ret < 0) {
488 mutex_unlock(&data->mutex);
489 goto err;
490 }
491 data->buffer[i++] = ret;
492 }
493 mutex_unlock(&data->mutex);
494
495 iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
496 pf->timestamp);
497err:
498 iio_trigger_notify_done(indio_dev->trig);
499
500 return IRQ_HANDLED;
501}
502
503static int kxcjk1013_trig_try_reen(struct iio_trigger *trig)
504{
505 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
506 struct kxcjk1013_data *data = iio_priv(indio_dev);
507 int ret;
508
509 ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
510 if (ret < 0) {
511 dev_err(&data->client->dev, "Error reading reg_int_rel\n");
512 return ret;
513 }
514
515 return 0;
516}
517
518static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
519 bool state)
520{
521 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
522 struct kxcjk1013_data *data = iio_priv(indio_dev);
523
524 mutex_lock(&data->mutex);
525 if (state) {
526 kxcjk1013_chip_setup_interrupt(data, true);
527 kxcjk1013_set_mode(data, OPERATION);
528 ++data->power_state;
529 } else {
530 if (--data->power_state) {
531 mutex_unlock(&data->mutex);
532 return 0;
533 }
534 kxcjk1013_chip_setup_interrupt(data, false);
535 kxcjk1013_set_mode(data, STANDBY);
536 }
537 mutex_unlock(&data->mutex);
538
539 return 0;
540}
541
542static const struct iio_trigger_ops kxcjk1013_trigger_ops = {
543 .set_trigger_state = kxcjk1013_data_rdy_trigger_set_state,
544 .try_reenable = kxcjk1013_trig_try_reen,
545 .owner = THIS_MODULE,
546};
547
548static int kxcjk1013_acpi_gpio_probe(struct i2c_client *client,
549 struct kxcjk1013_data *data)
550{
551 const struct acpi_device_id *id;
552 struct device *dev;
553 struct gpio_desc *gpio;
554 int ret;
555
556 if (!client)
557 return -EINVAL;
558
559 dev = &client->dev;
560 if (!ACPI_HANDLE(dev))
561 return -ENODEV;
562
563 id = acpi_match_device(dev->driver->acpi_match_table, dev);
564 if (!id)
565 return -ENODEV;
566
567 /* data ready gpio interrupt pin */
568 gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0);
569 if (IS_ERR(gpio)) {
570 dev_err(dev, "acpi gpio get index failed\n");
571 return PTR_ERR(gpio);
572 }
573
574 ret = gpiod_direction_input(gpio);
575 if (ret)
576 return ret;
577
578 ret = gpiod_to_irq(gpio);
579
580 dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
581
582 return ret;
583}
584
585static int kxcjk1013_probe(struct i2c_client *client,
586 const struct i2c_device_id *id)
587{
588 struct kxcjk1013_data *data;
589 struct iio_dev *indio_dev;
590 struct iio_trigger *trig = NULL;
591 struct kxcjk_1013_platform_data *pdata;
592 int ret;
593
594 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
595 if (!indio_dev)
596 return -ENOMEM;
597
598 data = iio_priv(indio_dev);
599 i2c_set_clientdata(client, indio_dev);
600 data->client = client;
601
602 pdata = dev_get_platdata(&client->dev);
603 if (pdata)
604 data->active_high_intr = pdata->active_high_intr;
605 else
606 data->active_high_intr = true; /* default polarity */
607
608 ret = kxcjk1013_chip_init(data);
609 if (ret < 0)
610 return ret;
611
612 mutex_init(&data->mutex);
613
614 indio_dev->dev.parent = &client->dev;
615 indio_dev->channels = kxcjk1013_channels;
616 indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
617 indio_dev->name = KXCJK1013_DRV_NAME;
618 indio_dev->modes = INDIO_DIRECT_MODE;
619 indio_dev->info = &kxcjk1013_info;
620
621 if (client->irq < 0)
622 client->irq = kxcjk1013_acpi_gpio_probe(client, data);
623
624 if (client->irq >= 0) {
625 trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
626 indio_dev->id);
627 if (!trig)
628 return -ENOMEM;
629
630 data->trig_mode = true;
631
632 ret = devm_request_irq(&client->dev, client->irq,
633 iio_trigger_generic_data_rdy_poll,
634 IRQF_TRIGGER_RISING,
635 KXCJK1013_IRQ_NAME,
636 trig);
637 if (ret) {
638 dev_err(&client->dev, "unable to request IRQ\n");
639 goto err_trigger_free;
640 }
641
642 trig->dev.parent = &client->dev;
643 trig->ops = &kxcjk1013_trigger_ops;
644 iio_trigger_set_drvdata(trig, indio_dev);
645 data->trig = trig;
646 indio_dev->trig = trig;
647 iio_trigger_get(indio_dev->trig);
648
649 ret = iio_trigger_register(trig);
650 if (ret)
651 goto err_trigger_free;
652
653 ret = iio_triggered_buffer_setup(indio_dev,
654 &iio_pollfunc_store_time,
655 kxcjk1013_trigger_handler,
656 NULL);
657 if (ret < 0) {
658 dev_err(&client->dev,
659 "iio triggered buffer setup failed\n");
660 goto err_trigger_unregister;
661 }
662 }
663
664 ret = devm_iio_device_register(&client->dev, indio_dev);
665 if (ret < 0) {
666 dev_err(&client->dev, "unable to register iio device\n");
667 goto err_buffer_cleanup;
668 }
669
670 return 0;
671
672err_buffer_cleanup:
673 if (data->trig_mode)
674 iio_triggered_buffer_cleanup(indio_dev);
675err_trigger_unregister:
676 if (data->trig_mode)
677 iio_trigger_unregister(trig);
678err_trigger_free:
679 if (data->trig_mode)
680 iio_trigger_free(trig);
681
682 return ret;
683}
684
685static int kxcjk1013_remove(struct i2c_client *client)
686{
687 struct iio_dev *indio_dev = i2c_get_clientdata(client);
688 struct kxcjk1013_data *data = iio_priv(indio_dev);
689
690 if (data->trig_mode) {
691 iio_triggered_buffer_cleanup(indio_dev);
692 iio_trigger_unregister(data->trig);
693 iio_trigger_free(data->trig);
694 }
695
696 mutex_lock(&data->mutex);
697 kxcjk1013_set_mode(data, STANDBY);
698 mutex_unlock(&data->mutex);
699
700 return 0;
701}
702
703#ifdef CONFIG_PM_SLEEP
704static int kxcjk1013_suspend(struct device *dev)
705{
706 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
707 struct kxcjk1013_data *data = iio_priv(indio_dev);
708
709 mutex_lock(&data->mutex);
710 kxcjk1013_set_mode(data, STANDBY);
711 mutex_unlock(&data->mutex);
712
713 return 0;
714}
715
716static int kxcjk1013_resume(struct device *dev)
717{
718 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
719 struct kxcjk1013_data *data = iio_priv(indio_dev);
720
721 mutex_lock(&data->mutex);
722
723 if (data->power_state)
724 kxcjk1013_set_mode(data, OPERATION);
725
726 mutex_unlock(&data->mutex);
727
728 return 0;
729}
730
731static SIMPLE_DEV_PM_OPS(kxcjk1013_pm_ops, kxcjk1013_suspend, kxcjk1013_resume);
732#define KXCJK1013_PM_OPS (&kxcjk1013_pm_ops)
733#else
734#define KXCJK1013_PM_OPS NULL
735#endif
736
737static const struct acpi_device_id kx_acpi_match[] = {
738 {"KXCJ1013", 0},
739 { },
740};
741MODULE_DEVICE_TABLE(acpi, kx_acpi_match);
742
743static const struct i2c_device_id kxcjk1013_id[] = {
744 {"kxcjk1013", 0},
745 {}
746};
747
748MODULE_DEVICE_TABLE(i2c, kxcjk1013_id);
749
750static struct i2c_driver kxcjk1013_driver = {
751 .driver = {
752 .name = KXCJK1013_DRV_NAME,
753 .acpi_match_table = ACPI_PTR(kx_acpi_match),
754 .pm = KXCJK1013_PM_OPS,
755 },
756 .probe = kxcjk1013_probe,
757 .remove = kxcjk1013_remove,
758 .id_table = kxcjk1013_id,
759};
760module_i2c_driver(kxcjk1013_driver);
761
762MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
763MODULE_LICENSE("GPL v2");
764MODULE_DESCRIPTION("KXCJK1013 accelerometer driver");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 18:08:08 -0500