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1/*
2 * HID Sensors 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 * You should have received a copy of the GNU General Public License along with
15 * this program.
16 *
17 */
18#include <linux/device.h>
19#include <linux/platform_device.h>
20#include <linux/module.h>
21#include <linux/interrupt.h>
22#include <linux/irq.h>
23#include <linux/slab.h>
24#include <linux/delay.h>
25#include <linux/hid-sensor-hub.h>
26#include <linux/iio/iio.h>
27#include <linux/iio/sysfs.h>
28#include <linux/iio/buffer.h>
29#include <linux/iio/trigger_consumer.h>
30#include <linux/iio/triggered_buffer.h>
31#include "../common/hid-sensors/hid-sensor-trigger.h"
32
33#define CHANNEL_SCAN_INDEX_PRESENCE 0
34
35struct prox_state {
36 struct hid_sensor_hub_callbacks callbacks;
37 struct hid_sensor_common common_attributes;
38 struct hid_sensor_hub_attribute_info prox_attr;
39 u32 human_presence;
40};
41
42/* Channel definitions */
43static const struct iio_chan_spec prox_channels[] = {
44 {
45 .type = IIO_PROXIMITY,
46 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
47 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
48 BIT(IIO_CHAN_INFO_SCALE) |
49 BIT(IIO_CHAN_INFO_SAMP_FREQ) |
50 BIT(IIO_CHAN_INFO_HYSTERESIS),
51 .scan_index = CHANNEL_SCAN_INDEX_PRESENCE,
52 }
53};
54
55/* Adjust channel real bits based on report descriptor */
56static void prox_adjust_channel_bit_mask(struct iio_chan_spec *channels,
57 int channel, int size)
58{
59 channels[channel].scan_type.sign = 's';
60 /* Real storage bits will change based on the report desc. */
61 channels[channel].scan_type.realbits = size * 8;
62 /* Maximum size of a sample to capture is u32 */
63 channels[channel].scan_type.storagebits = sizeof(u32) * 8;
64}
65
66/* Channel read_raw handler */
67static int prox_read_raw(struct iio_dev *indio_dev,
68 struct iio_chan_spec const *chan,
69 int *val, int *val2,
70 long mask)
71{
72 struct prox_state *prox_state = iio_priv(indio_dev);
73 int report_id = -1;
74 u32 address;
75 int ret_type;
76
77 *val = 0;
78 *val2 = 0;
79 switch (mask) {
80 case IIO_CHAN_INFO_RAW:
81 switch (chan->scan_index) {
82 case CHANNEL_SCAN_INDEX_PRESENCE:
83 report_id = prox_state->prox_attr.report_id;
84 address =
85 HID_USAGE_SENSOR_HUMAN_PRESENCE;
86 break;
87 default:
88 report_id = -1;
89 break;
90 }
91 if (report_id >= 0) {
92 hid_sensor_power_state(&prox_state->common_attributes,
93 true);
94 *val = sensor_hub_input_attr_get_raw_value(
95 prox_state->common_attributes.hsdev,
96 HID_USAGE_SENSOR_PROX, address,
97 report_id,
98 SENSOR_HUB_SYNC);
99 hid_sensor_power_state(&prox_state->common_attributes,
100 false);
101 } else {
102 *val = 0;
103 return -EINVAL;
104 }
105 ret_type = IIO_VAL_INT;
106 break;
107 case IIO_CHAN_INFO_SCALE:
108 *val = prox_state->prox_attr.units;
109 ret_type = IIO_VAL_INT;
110 break;
111 case IIO_CHAN_INFO_OFFSET:
112 *val = hid_sensor_convert_exponent(
113 prox_state->prox_attr.unit_expo);
114 ret_type = IIO_VAL_INT;
115 break;
116 case IIO_CHAN_INFO_SAMP_FREQ:
117 ret_type = hid_sensor_read_samp_freq_value(
118 &prox_state->common_attributes, val, val2);
119 break;
120 case IIO_CHAN_INFO_HYSTERESIS:
121 ret_type = hid_sensor_read_raw_hyst_value(
122 &prox_state->common_attributes, val, val2);
123 break;
124 default:
125 ret_type = -EINVAL;
126 break;
127 }
128
129 return ret_type;
130}
131
132/* Channel write_raw handler */
133static int prox_write_raw(struct iio_dev *indio_dev,
134 struct iio_chan_spec const *chan,
135 int val,
136 int val2,
137 long mask)
138{
139 struct prox_state *prox_state = iio_priv(indio_dev);
140 int ret = 0;
141
142 switch (mask) {
143 case IIO_CHAN_INFO_SAMP_FREQ:
144 ret = hid_sensor_write_samp_freq_value(
145 &prox_state->common_attributes, val, val2);
146 break;
147 case IIO_CHAN_INFO_HYSTERESIS:
148 ret = hid_sensor_write_raw_hyst_value(
149 &prox_state->common_attributes, val, val2);
150 break;
151 default:
152 ret = -EINVAL;
153 }
154
155 return ret;
156}
157
158static const struct iio_info prox_info = {
159 .driver_module = THIS_MODULE,
160 .read_raw = &prox_read_raw,
161 .write_raw = &prox_write_raw,
162};
163
164/* Function to push data to buffer */
165static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
166 int len)
167{
168 dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
169 iio_push_to_buffers(indio_dev, data);
170}
171
172/* Callback handler to send event after all samples are received and captured */
173static int prox_proc_event(struct hid_sensor_hub_device *hsdev,
174 unsigned usage_id,
175 void *priv)
176{
177 struct iio_dev *indio_dev = platform_get_drvdata(priv);
178 struct prox_state *prox_state = iio_priv(indio_dev);
179
180 dev_dbg(&indio_dev->dev, "prox_proc_event\n");
181 if (atomic_read(&prox_state->common_attributes.data_ready))
182 hid_sensor_push_data(indio_dev,
183 &prox_state->human_presence,
184 sizeof(prox_state->human_presence));
185
186 return 0;
187}
188
189/* Capture samples in local storage */
190static int prox_capture_sample(struct hid_sensor_hub_device *hsdev,
191 unsigned usage_id,
192 size_t raw_len, char *raw_data,
193 void *priv)
194{
195 struct iio_dev *indio_dev = platform_get_drvdata(priv);
196 struct prox_state *prox_state = iio_priv(indio_dev);
197 int ret = -EINVAL;
198
199 switch (usage_id) {
200 case HID_USAGE_SENSOR_HUMAN_PRESENCE:
201 prox_state->human_presence = *(u32 *)raw_data;
202 ret = 0;
203 break;
204 default:
205 break;
206 }
207
208 return ret;
209}
210
211/* Parse report which is specific to an usage id*/
212static int prox_parse_report(struct platform_device *pdev,
213 struct hid_sensor_hub_device *hsdev,
214 struct iio_chan_spec *channels,
215 unsigned usage_id,
216 struct prox_state *st)
217{
218 int ret;
219
220 ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
221 usage_id,
222 HID_USAGE_SENSOR_HUMAN_PRESENCE,
223 &st->prox_attr);
224 if (ret < 0)
225 return ret;
226 prox_adjust_channel_bit_mask(channels, CHANNEL_SCAN_INDEX_PRESENCE,
227 st->prox_attr.size);
228
229 dev_dbg(&pdev->dev, "prox %x:%x\n", st->prox_attr.index,
230 st->prox_attr.report_id);
231
232 /* Set Sensitivity field ids, when there is no individual modifier */
233 if (st->common_attributes.sensitivity.index < 0) {
234 sensor_hub_input_get_attribute_info(hsdev,
235 HID_FEATURE_REPORT, usage_id,
236 HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
237 HID_USAGE_SENSOR_DATA_PRESENCE,
238 &st->common_attributes.sensitivity);
239 dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
240 st->common_attributes.sensitivity.index,
241 st->common_attributes.sensitivity.report_id);
242 }
243 return ret;
244}
245
246/* Function to initialize the processing for usage id */
247static int hid_prox_probe(struct platform_device *pdev)
248{
249 int ret = 0;
250 static const char *name = "prox";
251 struct iio_dev *indio_dev;
252 struct prox_state *prox_state;
253 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
254
255 indio_dev = devm_iio_device_alloc(&pdev->dev,
256 sizeof(struct prox_state));
257 if (!indio_dev)
258 return -ENOMEM;
259 platform_set_drvdata(pdev, indio_dev);
260
261 prox_state = iio_priv(indio_dev);
262 prox_state->common_attributes.hsdev = hsdev;
263 prox_state->common_attributes.pdev = pdev;
264
265 ret = hid_sensor_parse_common_attributes(hsdev, HID_USAGE_SENSOR_PROX,
266 &prox_state->common_attributes);
267 if (ret) {
268 dev_err(&pdev->dev, "failed to setup common attributes\n");
269 return ret;
270 }
271
272 indio_dev->channels = kmemdup(prox_channels, sizeof(prox_channels),
273 GFP_KERNEL);
274 if (!indio_dev->channels) {
275 dev_err(&pdev->dev, "failed to duplicate channels\n");
276 return -ENOMEM;
277 }
278
279 ret = prox_parse_report(pdev, hsdev,
280 (struct iio_chan_spec *)indio_dev->channels,
281 HID_USAGE_SENSOR_PROX, prox_state);
282 if (ret) {
283 dev_err(&pdev->dev, "failed to setup attributes\n");
284 goto error_free_dev_mem;
285 }
286
287 indio_dev->num_channels = ARRAY_SIZE(prox_channels);
288 indio_dev->dev.parent = &pdev->dev;
289 indio_dev->info = &prox_info;
290 indio_dev->name = name;
291 indio_dev->modes = INDIO_DIRECT_MODE;
292
293 ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
294 NULL, NULL);
295 if (ret) {
296 dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
297 goto error_free_dev_mem;
298 }
299 atomic_set(&prox_state->common_attributes.data_ready, 0);
300 ret = hid_sensor_setup_trigger(indio_dev, name,
301 &prox_state->common_attributes);
302 if (ret) {
303 dev_err(&pdev->dev, "trigger setup failed\n");
304 goto error_unreg_buffer_funcs;
305 }
306
307 ret = iio_device_register(indio_dev);
308 if (ret) {
309 dev_err(&pdev->dev, "device register failed\n");
310 goto error_remove_trigger;
311 }
312
313 prox_state->callbacks.send_event = prox_proc_event;
314 prox_state->callbacks.capture_sample = prox_capture_sample;
315 prox_state->callbacks.pdev = pdev;
316 ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_PROX,
317 &prox_state->callbacks);
318 if (ret < 0) {
319 dev_err(&pdev->dev, "callback reg failed\n");
320 goto error_iio_unreg;
321 }
322
323 return ret;
324
325error_iio_unreg:
326 iio_device_unregister(indio_dev);
327error_remove_trigger:
328 hid_sensor_remove_trigger(&prox_state->common_attributes);
329error_unreg_buffer_funcs:
330 iio_triggered_buffer_cleanup(indio_dev);
331error_free_dev_mem:
332 kfree(indio_dev->channels);
333 return ret;
334}
335
336/* Function to deinitialize the processing for usage id */
337static int hid_prox_remove(struct platform_device *pdev)
338{
339 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
340 struct iio_dev *indio_dev = platform_get_drvdata(pdev);
341 struct prox_state *prox_state = iio_priv(indio_dev);
342
343 sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PROX);
344 iio_device_unregister(indio_dev);
345 hid_sensor_remove_trigger(&prox_state->common_attributes);
346 iio_triggered_buffer_cleanup(indio_dev);
347 kfree(indio_dev->channels);
348
349 return 0;
350}
351
352static const struct platform_device_id hid_prox_ids[] = {
353 {
354 /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
355 .name = "HID-SENSOR-200011",
356 },
357 { /* sentinel */ }
358};
359MODULE_DEVICE_TABLE(platform, hid_prox_ids);
360
361static struct platform_driver hid_prox_platform_driver = {
362 .id_table = hid_prox_ids,
363 .driver = {
364 .name = KBUILD_MODNAME,
365 .pm = &hid_sensor_pm_ops,
366 },
367 .probe = hid_prox_probe,
368 .remove = hid_prox_remove,
369};
370module_platform_driver(hid_prox_platform_driver);
371
372MODULE_DESCRIPTION("HID Sensor Proximity");
373MODULE_AUTHOR("Archana Patni <archana.patni@intel.com>");
374MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * HID Sensors Driver
4 * Copyright (c) 2014, Intel Corporation.
5 */
6#include <linux/device.h>
7#include <linux/platform_device.h>
8#include <linux/module.h>
9#include <linux/mod_devicetable.h>
10#include <linux/slab.h>
11#include <linux/hid-sensor-hub.h>
12#include <linux/iio/iio.h>
13#include <linux/iio/buffer.h>
14#include "../common/hid-sensors/hid-sensor-trigger.h"
15
16#define CHANNEL_SCAN_INDEX_PRESENCE 0
17
18struct prox_state {
19 struct hid_sensor_hub_callbacks callbacks;
20 struct hid_sensor_common common_attributes;
21 struct hid_sensor_hub_attribute_info prox_attr;
22 u32 human_presence;
23 int scale_pre_decml;
24 int scale_post_decml;
25 int scale_precision;
26};
27
28static const u32 prox_sensitivity_addresses[] = {
29 HID_USAGE_SENSOR_HUMAN_PRESENCE,
30 HID_USAGE_SENSOR_DATA_PRESENCE,
31};
32
33/* Channel definitions */
34static const struct iio_chan_spec prox_channels[] = {
35 {
36 .type = IIO_PROXIMITY,
37 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
38 .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
39 BIT(IIO_CHAN_INFO_SCALE) |
40 BIT(IIO_CHAN_INFO_SAMP_FREQ) |
41 BIT(IIO_CHAN_INFO_HYSTERESIS),
42 .scan_index = CHANNEL_SCAN_INDEX_PRESENCE,
43 }
44};
45
46/* Adjust channel real bits based on report descriptor */
47static void prox_adjust_channel_bit_mask(struct iio_chan_spec *channels,
48 int channel, int size)
49{
50 channels[channel].scan_type.sign = 's';
51 /* Real storage bits will change based on the report desc. */
52 channels[channel].scan_type.realbits = size * 8;
53 /* Maximum size of a sample to capture is u32 */
54 channels[channel].scan_type.storagebits = sizeof(u32) * 8;
55}
56
57/* Channel read_raw handler */
58static int prox_read_raw(struct iio_dev *indio_dev,
59 struct iio_chan_spec const *chan,
60 int *val, int *val2,
61 long mask)
62{
63 struct prox_state *prox_state = iio_priv(indio_dev);
64 int report_id = -1;
65 u32 address;
66 int ret_type;
67 s32 min;
68
69 *val = 0;
70 *val2 = 0;
71 switch (mask) {
72 case IIO_CHAN_INFO_RAW:
73 switch (chan->scan_index) {
74 case CHANNEL_SCAN_INDEX_PRESENCE:
75 report_id = prox_state->prox_attr.report_id;
76 min = prox_state->prox_attr.logical_minimum;
77 address = HID_USAGE_SENSOR_HUMAN_PRESENCE;
78 break;
79 default:
80 report_id = -1;
81 break;
82 }
83 if (report_id >= 0) {
84 hid_sensor_power_state(&prox_state->common_attributes,
85 true);
86 *val = sensor_hub_input_attr_get_raw_value(
87 prox_state->common_attributes.hsdev,
88 HID_USAGE_SENSOR_PROX, address,
89 report_id,
90 SENSOR_HUB_SYNC,
91 min < 0);
92 hid_sensor_power_state(&prox_state->common_attributes,
93 false);
94 } else {
95 *val = 0;
96 return -EINVAL;
97 }
98 ret_type = IIO_VAL_INT;
99 break;
100 case IIO_CHAN_INFO_SCALE:
101 *val = prox_state->scale_pre_decml;
102 *val2 = prox_state->scale_post_decml;
103 ret_type = prox_state->scale_precision;
104 break;
105 case IIO_CHAN_INFO_OFFSET:
106 *val = hid_sensor_convert_exponent(
107 prox_state->prox_attr.unit_expo);
108 ret_type = IIO_VAL_INT;
109 break;
110 case IIO_CHAN_INFO_SAMP_FREQ:
111 ret_type = hid_sensor_read_samp_freq_value(
112 &prox_state->common_attributes, val, val2);
113 break;
114 case IIO_CHAN_INFO_HYSTERESIS:
115 ret_type = hid_sensor_read_raw_hyst_value(
116 &prox_state->common_attributes, val, val2);
117 break;
118 default:
119 ret_type = -EINVAL;
120 break;
121 }
122
123 return ret_type;
124}
125
126/* Channel write_raw handler */
127static int prox_write_raw(struct iio_dev *indio_dev,
128 struct iio_chan_spec const *chan,
129 int val,
130 int val2,
131 long mask)
132{
133 struct prox_state *prox_state = iio_priv(indio_dev);
134 int ret = 0;
135
136 switch (mask) {
137 case IIO_CHAN_INFO_SAMP_FREQ:
138 ret = hid_sensor_write_samp_freq_value(
139 &prox_state->common_attributes, val, val2);
140 break;
141 case IIO_CHAN_INFO_HYSTERESIS:
142 ret = hid_sensor_write_raw_hyst_value(
143 &prox_state->common_attributes, val, val2);
144 break;
145 default:
146 ret = -EINVAL;
147 }
148
149 return ret;
150}
151
152static const struct iio_info prox_info = {
153 .read_raw = &prox_read_raw,
154 .write_raw = &prox_write_raw,
155};
156
157/* Function to push data to buffer */
158static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
159 int len)
160{
161 dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
162 iio_push_to_buffers(indio_dev, data);
163}
164
165/* Callback handler to send event after all samples are received and captured */
166static int prox_proc_event(struct hid_sensor_hub_device *hsdev,
167 unsigned usage_id,
168 void *priv)
169{
170 struct iio_dev *indio_dev = platform_get_drvdata(priv);
171 struct prox_state *prox_state = iio_priv(indio_dev);
172
173 dev_dbg(&indio_dev->dev, "prox_proc_event\n");
174 if (atomic_read(&prox_state->common_attributes.data_ready))
175 hid_sensor_push_data(indio_dev,
176 &prox_state->human_presence,
177 sizeof(prox_state->human_presence));
178
179 return 0;
180}
181
182/* Capture samples in local storage */
183static int prox_capture_sample(struct hid_sensor_hub_device *hsdev,
184 unsigned usage_id,
185 size_t raw_len, char *raw_data,
186 void *priv)
187{
188 struct iio_dev *indio_dev = platform_get_drvdata(priv);
189 struct prox_state *prox_state = iio_priv(indio_dev);
190 int ret = -EINVAL;
191
192 switch (usage_id) {
193 case HID_USAGE_SENSOR_HUMAN_PRESENCE:
194 prox_state->human_presence = *(u32 *)raw_data;
195 ret = 0;
196 break;
197 default:
198 break;
199 }
200
201 return ret;
202}
203
204/* Parse report which is specific to an usage id*/
205static int prox_parse_report(struct platform_device *pdev,
206 struct hid_sensor_hub_device *hsdev,
207 struct iio_chan_spec *channels,
208 unsigned usage_id,
209 struct prox_state *st)
210{
211 int ret;
212
213 ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
214 usage_id,
215 HID_USAGE_SENSOR_HUMAN_PRESENCE,
216 &st->prox_attr);
217 if (ret < 0)
218 return ret;
219 prox_adjust_channel_bit_mask(channels, CHANNEL_SCAN_INDEX_PRESENCE,
220 st->prox_attr.size);
221
222 dev_dbg(&pdev->dev, "prox %x:%x\n", st->prox_attr.index,
223 st->prox_attr.report_id);
224
225 return ret;
226}
227
228/* Function to initialize the processing for usage id */
229static int hid_prox_probe(struct platform_device *pdev)
230{
231 int ret = 0;
232 static const char *name = "prox";
233 struct iio_dev *indio_dev;
234 struct prox_state *prox_state;
235 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
236
237 indio_dev = devm_iio_device_alloc(&pdev->dev,
238 sizeof(struct prox_state));
239 if (!indio_dev)
240 return -ENOMEM;
241 platform_set_drvdata(pdev, indio_dev);
242
243 prox_state = iio_priv(indio_dev);
244 prox_state->common_attributes.hsdev = hsdev;
245 prox_state->common_attributes.pdev = pdev;
246
247 ret = hid_sensor_parse_common_attributes(hsdev, HID_USAGE_SENSOR_PROX,
248 &prox_state->common_attributes,
249 prox_sensitivity_addresses,
250 ARRAY_SIZE(prox_sensitivity_addresses));
251 if (ret) {
252 dev_err(&pdev->dev, "failed to setup common attributes\n");
253 return ret;
254 }
255
256 indio_dev->channels = devm_kmemdup(&pdev->dev, prox_channels,
257 sizeof(prox_channels), GFP_KERNEL);
258 if (!indio_dev->channels) {
259 dev_err(&pdev->dev, "failed to duplicate channels\n");
260 return -ENOMEM;
261 }
262
263 ret = prox_parse_report(pdev, hsdev,
264 (struct iio_chan_spec *)indio_dev->channels,
265 HID_USAGE_SENSOR_PROX, prox_state);
266 if (ret) {
267 dev_err(&pdev->dev, "failed to setup attributes\n");
268 return ret;
269 }
270
271 indio_dev->num_channels = ARRAY_SIZE(prox_channels);
272 indio_dev->info = &prox_info;
273 indio_dev->name = name;
274 indio_dev->modes = INDIO_DIRECT_MODE;
275
276 atomic_set(&prox_state->common_attributes.data_ready, 0);
277
278 ret = hid_sensor_setup_trigger(indio_dev, name,
279 &prox_state->common_attributes);
280 if (ret) {
281 dev_err(&pdev->dev, "trigger setup failed\n");
282 return ret;
283 }
284
285 ret = iio_device_register(indio_dev);
286 if (ret) {
287 dev_err(&pdev->dev, "device register failed\n");
288 goto error_remove_trigger;
289 }
290
291 prox_state->callbacks.send_event = prox_proc_event;
292 prox_state->callbacks.capture_sample = prox_capture_sample;
293 prox_state->callbacks.pdev = pdev;
294 ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_PROX,
295 &prox_state->callbacks);
296 if (ret < 0) {
297 dev_err(&pdev->dev, "callback reg failed\n");
298 goto error_iio_unreg;
299 }
300
301 return ret;
302
303error_iio_unreg:
304 iio_device_unregister(indio_dev);
305error_remove_trigger:
306 hid_sensor_remove_trigger(indio_dev, &prox_state->common_attributes);
307 return ret;
308}
309
310/* Function to deinitialize the processing for usage id */
311static int hid_prox_remove(struct platform_device *pdev)
312{
313 struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
314 struct iio_dev *indio_dev = platform_get_drvdata(pdev);
315 struct prox_state *prox_state = iio_priv(indio_dev);
316
317 sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PROX);
318 iio_device_unregister(indio_dev);
319 hid_sensor_remove_trigger(indio_dev, &prox_state->common_attributes);
320
321 return 0;
322}
323
324static const struct platform_device_id hid_prox_ids[] = {
325 {
326 /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
327 .name = "HID-SENSOR-200011",
328 },
329 { /* sentinel */ }
330};
331MODULE_DEVICE_TABLE(platform, hid_prox_ids);
332
333static struct platform_driver hid_prox_platform_driver = {
334 .id_table = hid_prox_ids,
335 .driver = {
336 .name = KBUILD_MODNAME,
337 .pm = &hid_sensor_pm_ops,
338 },
339 .probe = hid_prox_probe,
340 .remove = hid_prox_remove,
341};
342module_platform_driver(hid_prox_platform_driver);
343
344MODULE_DESCRIPTION("HID Sensor Proximity");
345MODULE_AUTHOR("Archana Patni <archana.patni@intel.com>");
346MODULE_LICENSE("GPL");
347MODULE_IMPORT_NS(IIO_HID);