Commit | Line | Data |
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bc1d57ba | 1 | /* |
2 | * HID Sensors Driver | |
3 | * Copyright (c) 2012, 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 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | * | |
18 | */ | |
19 | #include <linux/device.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/irq.h> | |
24 | #include <linux/slab.h> | |
8009c594 | 25 | #include <linux/delay.h> |
bc1d57ba | 26 | #include <linux/hid-sensor-hub.h> |
27 | #include <linux/iio/iio.h> | |
28 | #include <linux/iio/sysfs.h> | |
29 | #include <linux/iio/buffer.h> | |
30 | #include <linux/iio/trigger_consumer.h> | |
31 | #include <linux/iio/triggered_buffer.h> | |
bc1d57ba | 32 | #include "../common/hid-sensors/hid-sensor-trigger.h" |
33 | ||
bc1d57ba | 34 | enum magn_3d_channel { |
35 | CHANNEL_SCAN_INDEX_X, | |
36 | CHANNEL_SCAN_INDEX_Y, | |
37 | CHANNEL_SCAN_INDEX_Z, | |
abea9c62 RA |
38 | CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP, |
39 | CHANNEL_SCAN_INDEX_NORTH_TRUE_TILT_COMP, | |
40 | CHANNEL_SCAN_INDEX_NORTH_MAGN, | |
41 | CHANNEL_SCAN_INDEX_NORTH_TRUE, | |
bc1d57ba | 42 | MAGN_3D_CHANNEL_MAX, |
43 | }; | |
44 | ||
45 | struct magn_3d_state { | |
46 | struct hid_sensor_hub_callbacks callbacks; | |
e07c6d17 | 47 | struct hid_sensor_common common_attributes; |
bc1d57ba | 48 | struct hid_sensor_hub_attribute_info magn[MAGN_3D_CHANNEL_MAX]; |
2a96540a RA |
49 | |
50 | /* dynamically sized array to hold sensor values */ | |
51 | u32 *iio_vals; | |
52 | /* array of pointers to sensor value */ | |
53 | u32 *magn_val_addr[MAGN_3D_CHANNEL_MAX]; | |
54 | ||
92463fda SP |
55 | int scale_pre_decml; |
56 | int scale_post_decml; | |
57 | int scale_precision; | |
58 | int value_offset; | |
bc1d57ba | 59 | }; |
60 | ||
61 | static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = { | |
62 | HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS, | |
63 | HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS, | |
abea9c62 RA |
64 | HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS, |
65 | HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH, | |
66 | HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH, | |
67 | HID_USAGE_SENSOR_ORIENT_MAGN_NORTH, | |
68 | HID_USAGE_SENSOR_ORIENT_TRUE_NORTH, | |
bc1d57ba | 69 | }; |
70 | ||
71 | /* Channel definitions */ | |
72 | static const struct iio_chan_spec magn_3d_channels[] = { | |
73 | { | |
74 | .type = IIO_MAGN, | |
75 | .modified = 1, | |
76 | .channel2 = IIO_MOD_X, | |
8009c594 | 77 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
ecbe18f2 JC |
78 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | |
79 | BIT(IIO_CHAN_INFO_SCALE) | | |
80 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
81 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
bc1d57ba | 82 | }, { |
83 | .type = IIO_MAGN, | |
84 | .modified = 1, | |
85 | .channel2 = IIO_MOD_Y, | |
8009c594 | 86 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
ecbe18f2 JC |
87 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | |
88 | BIT(IIO_CHAN_INFO_SCALE) | | |
89 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
90 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
bc1d57ba | 91 | }, { |
92 | .type = IIO_MAGN, | |
93 | .modified = 1, | |
94 | .channel2 = IIO_MOD_Z, | |
8009c594 | 95 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), |
ecbe18f2 JC |
96 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | |
97 | BIT(IIO_CHAN_INFO_SCALE) | | |
98 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
99 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
abea9c62 RA |
100 | }, { |
101 | .type = IIO_ROT, | |
102 | .modified = 1, | |
103 | .channel2 = IIO_MOD_NORTH_MAGN_TILT_COMP, | |
104 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), | |
105 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | | |
106 | BIT(IIO_CHAN_INFO_SCALE) | | |
107 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
108 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
109 | }, { | |
110 | .type = IIO_ROT, | |
111 | .modified = 1, | |
112 | .channel2 = IIO_MOD_NORTH_TRUE_TILT_COMP, | |
113 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), | |
114 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | | |
115 | BIT(IIO_CHAN_INFO_SCALE) | | |
116 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
117 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
118 | }, { | |
119 | .type = IIO_ROT, | |
120 | .modified = 1, | |
121 | .channel2 = IIO_MOD_NORTH_MAGN, | |
122 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), | |
123 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | | |
124 | BIT(IIO_CHAN_INFO_SCALE) | | |
125 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
126 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
127 | }, { | |
128 | .type = IIO_ROT, | |
129 | .modified = 1, | |
130 | .channel2 = IIO_MOD_NORTH_TRUE, | |
131 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), | |
132 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | | |
133 | BIT(IIO_CHAN_INFO_SCALE) | | |
134 | BIT(IIO_CHAN_INFO_SAMP_FREQ) | | |
135 | BIT(IIO_CHAN_INFO_HYSTERESIS), | |
bc1d57ba | 136 | } |
137 | }; | |
138 | ||
139 | /* Adjust channel real bits based on report descriptor */ | |
140 | static void magn_3d_adjust_channel_bit_mask(struct iio_chan_spec *channels, | |
141 | int channel, int size) | |
142 | { | |
143 | channels[channel].scan_type.sign = 's'; | |
144 | /* Real storage bits will change based on the report desc. */ | |
145 | channels[channel].scan_type.realbits = size * 8; | |
146 | /* Maximum size of a sample to capture is u32 */ | |
147 | channels[channel].scan_type.storagebits = sizeof(u32) * 8; | |
148 | } | |
149 | ||
150 | /* Channel read_raw handler */ | |
151 | static int magn_3d_read_raw(struct iio_dev *indio_dev, | |
152 | struct iio_chan_spec const *chan, | |
153 | int *val, int *val2, | |
154 | long mask) | |
155 | { | |
156 | struct magn_3d_state *magn_state = iio_priv(indio_dev); | |
157 | int report_id = -1; | |
158 | u32 address; | |
bc1d57ba | 159 | int ret_type; |
160 | ||
161 | *val = 0; | |
162 | *val2 = 0; | |
163 | switch (mask) { | |
164 | case 0: | |
8009c594 | 165 | hid_sensor_power_state(&magn_state->common_attributes, true); |
bc1d57ba | 166 | report_id = |
2a96540a RA |
167 | magn_state->magn[chan->address].report_id; |
168 | address = magn_3d_addresses[chan->address]; | |
bc1d57ba | 169 | if (report_id >= 0) |
170 | *val = sensor_hub_input_attr_get_raw_value( | |
171 | magn_state->common_attributes.hsdev, | |
172 | HID_USAGE_SENSOR_COMPASS_3D, address, | |
b3f4737d SP |
173 | report_id, |
174 | SENSOR_HUB_SYNC); | |
bc1d57ba | 175 | else { |
176 | *val = 0; | |
8009c594 SP |
177 | hid_sensor_power_state(&magn_state->common_attributes, |
178 | false); | |
bc1d57ba | 179 | return -EINVAL; |
180 | } | |
8009c594 | 181 | hid_sensor_power_state(&magn_state->common_attributes, false); |
bc1d57ba | 182 | ret_type = IIO_VAL_INT; |
183 | break; | |
184 | case IIO_CHAN_INFO_SCALE: | |
92463fda SP |
185 | *val = magn_state->scale_pre_decml; |
186 | *val2 = magn_state->scale_post_decml; | |
187 | ret_type = magn_state->scale_precision; | |
bc1d57ba | 188 | break; |
189 | case IIO_CHAN_INFO_OFFSET: | |
92463fda | 190 | *val = magn_state->value_offset; |
bc1d57ba | 191 | ret_type = IIO_VAL_INT; |
192 | break; | |
193 | case IIO_CHAN_INFO_SAMP_FREQ: | |
5f25b41f | 194 | ret_type = hid_sensor_read_samp_freq_value( |
bc1d57ba | 195 | &magn_state->common_attributes, val, val2); |
bc1d57ba | 196 | break; |
197 | case IIO_CHAN_INFO_HYSTERESIS: | |
5f25b41f | 198 | ret_type = hid_sensor_read_raw_hyst_value( |
bc1d57ba | 199 | &magn_state->common_attributes, val, val2); |
bc1d57ba | 200 | break; |
201 | default: | |
202 | ret_type = -EINVAL; | |
203 | break; | |
204 | } | |
205 | ||
206 | return ret_type; | |
207 | } | |
208 | ||
209 | /* Channel write_raw handler */ | |
210 | static int magn_3d_write_raw(struct iio_dev *indio_dev, | |
211 | struct iio_chan_spec const *chan, | |
212 | int val, | |
213 | int val2, | |
214 | long mask) | |
215 | { | |
216 | struct magn_3d_state *magn_state = iio_priv(indio_dev); | |
217 | int ret = 0; | |
218 | ||
219 | switch (mask) { | |
220 | case IIO_CHAN_INFO_SAMP_FREQ: | |
221 | ret = hid_sensor_write_samp_freq_value( | |
222 | &magn_state->common_attributes, val, val2); | |
223 | break; | |
224 | case IIO_CHAN_INFO_HYSTERESIS: | |
225 | ret = hid_sensor_write_raw_hyst_value( | |
226 | &magn_state->common_attributes, val, val2); | |
227 | break; | |
228 | default: | |
229 | ret = -EINVAL; | |
230 | } | |
231 | ||
232 | return ret; | |
233 | } | |
234 | ||
bc1d57ba | 235 | static const struct iio_info magn_3d_info = { |
236 | .driver_module = THIS_MODULE, | |
237 | .read_raw = &magn_3d_read_raw, | |
238 | .write_raw = &magn_3d_write_raw, | |
bc1d57ba | 239 | }; |
240 | ||
241 | /* Function to push data to buffer */ | |
03d79558 | 242 | static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data) |
bc1d57ba | 243 | { |
bc1d57ba | 244 | dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); |
8c60c7e7 | 245 | iio_push_to_buffers(indio_dev, data); |
bc1d57ba | 246 | } |
247 | ||
248 | /* Callback handler to send event after all samples are received and captured */ | |
249 | static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev, | |
250 | unsigned usage_id, | |
251 | void *priv) | |
252 | { | |
253 | struct iio_dev *indio_dev = platform_get_drvdata(priv); | |
254 | struct magn_3d_state *magn_state = iio_priv(indio_dev); | |
255 | ||
56ff6be6 SP |
256 | dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n"); |
257 | if (atomic_read(&magn_state->common_attributes.data_ready)) | |
03d79558 | 258 | hid_sensor_push_data(indio_dev, magn_state->iio_vals); |
bc1d57ba | 259 | |
260 | return 0; | |
261 | } | |
262 | ||
263 | /* Capture samples in local storage */ | |
264 | static int magn_3d_capture_sample(struct hid_sensor_hub_device *hsdev, | |
265 | unsigned usage_id, | |
266 | size_t raw_len, char *raw_data, | |
267 | void *priv) | |
268 | { | |
269 | struct iio_dev *indio_dev = platform_get_drvdata(priv); | |
270 | struct magn_3d_state *magn_state = iio_priv(indio_dev); | |
271 | int offset; | |
2a96540a RA |
272 | int ret = 0; |
273 | u32 *iio_val = NULL; | |
bc1d57ba | 274 | |
275 | switch (usage_id) { | |
276 | case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS: | |
277 | case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS: | |
278 | case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS: | |
2a96540a RA |
279 | offset = (usage_id - HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS) |
280 | + CHANNEL_SCAN_INDEX_X; | |
bc1d57ba | 281 | break; |
abea9c62 RA |
282 | case HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH: |
283 | case HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH: | |
284 | case HID_USAGE_SENSOR_ORIENT_MAGN_NORTH: | |
285 | case HID_USAGE_SENSOR_ORIENT_TRUE_NORTH: | |
286 | offset = (usage_id - HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH) | |
287 | + CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP; | |
bc1d57ba | 288 | break; |
289 | default: | |
2a96540a | 290 | return -EINVAL; |
bc1d57ba | 291 | } |
292 | ||
2a96540a RA |
293 | iio_val = magn_state->magn_val_addr[offset]; |
294 | ||
295 | if (iio_val != NULL) | |
296 | *iio_val = *((u32 *)raw_data); | |
297 | else | |
298 | ret = -EINVAL; | |
299 | ||
bc1d57ba | 300 | return ret; |
301 | } | |
302 | ||
303 | /* Parse report which is specific to an usage id*/ | |
304 | static int magn_3d_parse_report(struct platform_device *pdev, | |
305 | struct hid_sensor_hub_device *hsdev, | |
2a96540a RA |
306 | struct iio_chan_spec **channels, |
307 | int *chan_count, | |
bc1d57ba | 308 | unsigned usage_id, |
309 | struct magn_3d_state *st) | |
310 | { | |
bc1d57ba | 311 | int i; |
2a96540a RA |
312 | int attr_count = 0; |
313 | struct iio_chan_spec *_channels; | |
314 | ||
315 | /* Scan for each usage attribute supported */ | |
316 | for (i = 0; i < MAGN_3D_CHANNEL_MAX; i++) { | |
317 | int status; | |
318 | u32 address = magn_3d_addresses[i]; | |
319 | ||
320 | /* Check if usage attribute exists in the sensor hub device */ | |
321 | status = sensor_hub_input_get_attribute_info(hsdev, | |
322 | HID_INPUT_REPORT, | |
323 | usage_id, | |
324 | address, | |
325 | &(st->magn[i])); | |
326 | if (!status) | |
327 | attr_count++; | |
328 | } | |
bc1d57ba | 329 | |
2a96540a RA |
330 | if (attr_count <= 0) { |
331 | dev_err(&pdev->dev, | |
332 | "failed to find any supported usage attributes in report\n"); | |
333 | return -EINVAL; | |
bc1d57ba | 334 | } |
2a96540a RA |
335 | |
336 | dev_dbg(&pdev->dev, "magn_3d Found %d usage attributes\n", | |
337 | attr_count); | |
338 | dev_dbg(&pdev->dev, "magn_3d X: %x:%x Y: %x:%x Z: %x:%x\n", | |
bc1d57ba | 339 | st->magn[0].index, |
340 | st->magn[0].report_id, | |
341 | st->magn[1].index, st->magn[1].report_id, | |
342 | st->magn[2].index, st->magn[2].report_id); | |
343 | ||
2a96540a RA |
344 | /* Setup IIO channel array */ |
345 | _channels = devm_kcalloc(&pdev->dev, attr_count, | |
346 | sizeof(struct iio_chan_spec), | |
347 | GFP_KERNEL); | |
348 | if (!_channels) { | |
349 | dev_err(&pdev->dev, | |
350 | "failed to allocate space for iio channels\n"); | |
351 | return -ENOMEM; | |
352 | } | |
353 | ||
354 | st->iio_vals = devm_kcalloc(&pdev->dev, attr_count, | |
355 | sizeof(u32), | |
356 | GFP_KERNEL); | |
357 | if (!st->iio_vals) { | |
358 | dev_err(&pdev->dev, | |
359 | "failed to allocate space for iio values array\n"); | |
360 | return -ENOMEM; | |
361 | } | |
362 | ||
363 | for (i = 0, *chan_count = 0; | |
364 | i < MAGN_3D_CHANNEL_MAX && *chan_count < attr_count; | |
365 | i++){ | |
366 | if (st->magn[i].index >= 0) { | |
367 | /* Setup IIO channel struct */ | |
368 | (_channels[*chan_count]) = magn_3d_channels[i]; | |
369 | (_channels[*chan_count]).scan_index = *chan_count; | |
370 | (_channels[*chan_count]).address = i; | |
371 | ||
372 | /* Set magn_val_addr to iio value address */ | |
373 | st->magn_val_addr[i] = &(st->iio_vals[*chan_count]); | |
374 | magn_3d_adjust_channel_bit_mask(_channels, | |
375 | *chan_count, | |
376 | st->magn[i].size); | |
377 | (*chan_count)++; | |
378 | } | |
379 | } | |
380 | ||
381 | if (*chan_count <= 0) { | |
382 | dev_err(&pdev->dev, | |
383 | "failed to find any magnetic channels setup\n"); | |
384 | return -EINVAL; | |
385 | } | |
386 | ||
387 | *channels = _channels; | |
388 | ||
389 | dev_dbg(&pdev->dev, "magn_3d Setup %d IIO channels\n", | |
390 | *chan_count); | |
391 | ||
92463fda SP |
392 | st->scale_precision = hid_sensor_format_scale( |
393 | HID_USAGE_SENSOR_COMPASS_3D, | |
394 | &st->magn[CHANNEL_SCAN_INDEX_X], | |
395 | &st->scale_pre_decml, &st->scale_post_decml); | |
396 | ||
2461fc9f SP |
397 | /* Set Sensitivity field ids, when there is no individual modifier */ |
398 | if (st->common_attributes.sensitivity.index < 0) { | |
399 | sensor_hub_input_get_attribute_info(hsdev, | |
400 | HID_FEATURE_REPORT, usage_id, | |
401 | HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS | | |
402 | HID_USAGE_SENSOR_DATA_ORIENTATION, | |
403 | &st->common_attributes.sensitivity); | |
404 | dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n", | |
405 | st->common_attributes.sensitivity.index, | |
406 | st->common_attributes.sensitivity.report_id); | |
407 | } | |
408 | ||
2a96540a | 409 | return 0; |
bc1d57ba | 410 | } |
411 | ||
412 | /* Function to initialize the processing for usage id */ | |
fc52692c | 413 | static int hid_magn_3d_probe(struct platform_device *pdev) |
bc1d57ba | 414 | { |
415 | int ret = 0; | |
416 | static char *name = "magn_3d"; | |
417 | struct iio_dev *indio_dev; | |
418 | struct magn_3d_state *magn_state; | |
419 | struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; | |
420 | struct iio_chan_spec *channels; | |
2a96540a | 421 | int chan_count = 0; |
bc1d57ba | 422 | |
907c0a0a SK |
423 | indio_dev = devm_iio_device_alloc(&pdev->dev, |
424 | sizeof(struct magn_3d_state)); | |
425 | if (indio_dev == NULL) | |
426 | return -ENOMEM; | |
427 | ||
bc1d57ba | 428 | platform_set_drvdata(pdev, indio_dev); |
429 | ||
430 | magn_state = iio_priv(indio_dev); | |
431 | magn_state->common_attributes.hsdev = hsdev; | |
432 | magn_state->common_attributes.pdev = pdev; | |
433 | ||
434 | ret = hid_sensor_parse_common_attributes(hsdev, | |
435 | HID_USAGE_SENSOR_COMPASS_3D, | |
436 | &magn_state->common_attributes); | |
437 | if (ret) { | |
438 | dev_err(&pdev->dev, "failed to setup common attributes\n"); | |
907c0a0a | 439 | return ret; |
bc1d57ba | 440 | } |
441 | ||
2a96540a RA |
442 | ret = magn_3d_parse_report(pdev, hsdev, |
443 | &channels, &chan_count, | |
bc1d57ba | 444 | HID_USAGE_SENSOR_COMPASS_3D, magn_state); |
445 | if (ret) { | |
2a96540a RA |
446 | dev_err(&pdev->dev, "failed to parse report\n"); |
447 | return ret; | |
bc1d57ba | 448 | } |
449 | ||
450 | indio_dev->channels = channels; | |
2a96540a | 451 | indio_dev->num_channels = chan_count; |
bc1d57ba | 452 | indio_dev->dev.parent = &pdev->dev; |
453 | indio_dev->info = &magn_3d_info; | |
454 | indio_dev->name = name; | |
455 | indio_dev->modes = INDIO_DIRECT_MODE; | |
456 | ||
457 | ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, | |
458 | NULL, NULL); | |
459 | if (ret) { | |
460 | dev_err(&pdev->dev, "failed to initialize trigger buffer\n"); | |
2a96540a | 461 | return ret; |
bc1d57ba | 462 | } |
56ff6be6 | 463 | atomic_set(&magn_state->common_attributes.data_ready, 0); |
bc1d57ba | 464 | ret = hid_sensor_setup_trigger(indio_dev, name, |
465 | &magn_state->common_attributes); | |
466 | if (ret < 0) { | |
467 | dev_err(&pdev->dev, "trigger setup failed\n"); | |
468 | goto error_unreg_buffer_funcs; | |
469 | } | |
470 | ||
471 | ret = iio_device_register(indio_dev); | |
472 | if (ret) { | |
473 | dev_err(&pdev->dev, "device register failed\n"); | |
474 | goto error_remove_trigger; | |
475 | } | |
476 | ||
477 | magn_state->callbacks.send_event = magn_3d_proc_event; | |
478 | magn_state->callbacks.capture_sample = magn_3d_capture_sample; | |
479 | magn_state->callbacks.pdev = pdev; | |
480 | ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D, | |
481 | &magn_state->callbacks); | |
482 | if (ret < 0) { | |
483 | dev_err(&pdev->dev, "callback reg failed\n"); | |
484 | goto error_iio_unreg; | |
485 | } | |
486 | ||
487 | return ret; | |
488 | ||
489 | error_iio_unreg: | |
490 | iio_device_unregister(indio_dev); | |
491 | error_remove_trigger: | |
ec7f68e0 | 492 | hid_sensor_remove_trigger(&magn_state->common_attributes); |
bc1d57ba | 493 | error_unreg_buffer_funcs: |
494 | iio_triggered_buffer_cleanup(indio_dev); | |
bc1d57ba | 495 | return ret; |
496 | } | |
497 | ||
498 | /* Function to deinitialize the processing for usage id */ | |
fc52692c | 499 | static int hid_magn_3d_remove(struct platform_device *pdev) |
bc1d57ba | 500 | { |
501 | struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; | |
502 | struct iio_dev *indio_dev = platform_get_drvdata(pdev); | |
ec7f68e0 | 503 | struct magn_3d_state *magn_state = iio_priv(indio_dev); |
bc1d57ba | 504 | |
505 | sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D); | |
506 | iio_device_unregister(indio_dev); | |
ec7f68e0 | 507 | hid_sensor_remove_trigger(&magn_state->common_attributes); |
bc1d57ba | 508 | iio_triggered_buffer_cleanup(indio_dev); |
bc1d57ba | 509 | |
510 | return 0; | |
511 | } | |
512 | ||
df5e94b4 | 513 | static const struct platform_device_id hid_magn_3d_ids[] = { |
a67c385a AH |
514 | { |
515 | /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ | |
516 | .name = "HID-SENSOR-200083", | |
517 | }, | |
518 | { /* sentinel */ } | |
519 | }; | |
520 | MODULE_DEVICE_TABLE(platform, hid_magn_3d_ids); | |
521 | ||
bc1d57ba | 522 | static struct platform_driver hid_magn_3d_platform_driver = { |
a67c385a | 523 | .id_table = hid_magn_3d_ids, |
bc1d57ba | 524 | .driver = { |
a67c385a | 525 | .name = KBUILD_MODNAME, |
0ef809cf | 526 | .pm = &hid_sensor_pm_ops, |
bc1d57ba | 527 | }, |
528 | .probe = hid_magn_3d_probe, | |
529 | .remove = hid_magn_3d_remove, | |
530 | }; | |
531 | module_platform_driver(hid_magn_3d_platform_driver); | |
532 | ||
533 | MODULE_DESCRIPTION("HID Sensor Magnetometer 3D"); | |
534 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
535 | MODULE_LICENSE("GPL"); |