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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b43d2c1e AD |
2 | /* |
3 | * Copyright (c) 2012-2016 Synaptics Incorporated | |
b43d2c1e AD |
4 | */ |
5 | #include <linux/input.h> | |
6 | #include <linux/input/mt.h> | |
7 | #include <linux/rmi.h> | |
8 | #include "rmi_driver.h" | |
9 | #include "rmi_2d_sensor.h" | |
10 | ||
11 | enum rmi_f12_object_type { | |
12 | RMI_F12_OBJECT_NONE = 0x00, | |
13 | RMI_F12_OBJECT_FINGER = 0x01, | |
14 | RMI_F12_OBJECT_STYLUS = 0x02, | |
15 | RMI_F12_OBJECT_PALM = 0x03, | |
16 | RMI_F12_OBJECT_UNCLASSIFIED = 0x04, | |
17 | RMI_F12_OBJECT_GLOVED_FINGER = 0x06, | |
18 | RMI_F12_OBJECT_NARROW_OBJECT = 0x07, | |
19 | RMI_F12_OBJECT_HAND_EDGE = 0x08, | |
20 | RMI_F12_OBJECT_COVER = 0x0A, | |
21 | RMI_F12_OBJECT_STYLUS_2 = 0x0B, | |
22 | RMI_F12_OBJECT_ERASER = 0x0C, | |
23 | RMI_F12_OBJECT_SMALL_OBJECT = 0x0D, | |
24 | }; | |
25 | ||
6d0dbeae AD |
26 | #define F12_DATA1_BYTES_PER_OBJ 8 |
27 | ||
b43d2c1e | 28 | struct f12_data { |
b43d2c1e AD |
29 | struct rmi_2d_sensor sensor; |
30 | struct rmi_2d_sensor_platform_data sensor_pdata; | |
24f63b1c | 31 | bool has_dribble; |
b43d2c1e AD |
32 | |
33 | u16 data_addr; | |
34 | ||
35 | struct rmi_register_descriptor query_reg_desc; | |
36 | struct rmi_register_descriptor control_reg_desc; | |
37 | struct rmi_register_descriptor data_reg_desc; | |
38 | ||
39 | /* F12 Data1 describes sensed objects */ | |
40 | const struct rmi_register_desc_item *data1; | |
41 | u16 data1_offset; | |
42 | ||
43 | /* F12 Data5 describes finger ACM */ | |
44 | const struct rmi_register_desc_item *data5; | |
45 | u16 data5_offset; | |
46 | ||
47 | /* F12 Data5 describes Pen */ | |
48 | const struct rmi_register_desc_item *data6; | |
49 | u16 data6_offset; | |
50 | ||
51 | ||
52 | /* F12 Data9 reports relative data */ | |
53 | const struct rmi_register_desc_item *data9; | |
54 | u16 data9_offset; | |
55 | ||
56 | const struct rmi_register_desc_item *data15; | |
57 | u16 data15_offset; | |
58 | }; | |
59 | ||
60 | static int rmi_f12_read_sensor_tuning(struct f12_data *f12) | |
61 | { | |
62 | const struct rmi_register_desc_item *item; | |
63 | struct rmi_2d_sensor *sensor = &f12->sensor; | |
64 | struct rmi_function *fn = sensor->fn; | |
65 | struct rmi_device *rmi_dev = fn->rmi_dev; | |
66 | int ret; | |
67 | int offset; | |
e4add7b6 | 68 | u8 buf[15]; |
b43d2c1e AD |
69 | int pitch_x = 0; |
70 | int pitch_y = 0; | |
b43d2c1e AD |
71 | int rx_receivers = 0; |
72 | int tx_receivers = 0; | |
b43d2c1e AD |
73 | |
74 | item = rmi_get_register_desc_item(&f12->control_reg_desc, 8); | |
75 | if (!item) { | |
76 | dev_err(&fn->dev, | |
77 | "F12 does not have the sensor tuning control register\n"); | |
78 | return -ENODEV; | |
79 | } | |
80 | ||
81 | offset = rmi_register_desc_calc_reg_offset(&f12->control_reg_desc, 8); | |
82 | ||
e4add7b6 AD |
83 | if (item->reg_size > sizeof(buf)) { |
84 | dev_err(&fn->dev, | |
85 | "F12 control8 should be no bigger than %zd bytes, not: %ld\n", | |
86 | sizeof(buf), item->reg_size); | |
b43d2c1e AD |
87 | return -ENODEV; |
88 | } | |
89 | ||
90 | ret = rmi_read_block(rmi_dev, fn->fd.control_base_addr + offset, buf, | |
91 | item->reg_size); | |
92 | if (ret) | |
93 | return ret; | |
94 | ||
95 | offset = 0; | |
96 | if (rmi_register_desc_has_subpacket(item, 0)) { | |
97 | sensor->max_x = (buf[offset + 1] << 8) | buf[offset]; | |
98 | sensor->max_y = (buf[offset + 3] << 8) | buf[offset + 2]; | |
99 | offset += 4; | |
100 | } | |
101 | ||
102 | rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: max_x: %d max_y: %d\n", __func__, | |
103 | sensor->max_x, sensor->max_y); | |
104 | ||
105 | if (rmi_register_desc_has_subpacket(item, 1)) { | |
106 | pitch_x = (buf[offset + 1] << 8) | buf[offset]; | |
107 | pitch_y = (buf[offset + 3] << 8) | buf[offset + 2]; | |
108 | offset += 4; | |
109 | } | |
110 | ||
111 | if (rmi_register_desc_has_subpacket(item, 2)) { | |
25670fb0 ND |
112 | /* Units 1/128 sensor pitch */ |
113 | rmi_dbg(RMI_DEBUG_FN, &fn->dev, | |
114 | "%s: Inactive Border xlo:%d xhi:%d ylo:%d yhi:%d\n", | |
115 | __func__, | |
116 | buf[offset], buf[offset + 1], | |
117 | buf[offset + 2], buf[offset + 3]); | |
118 | ||
b43d2c1e AD |
119 | offset += 4; |
120 | } | |
121 | ||
b43d2c1e AD |
122 | if (rmi_register_desc_has_subpacket(item, 3)) { |
123 | rx_receivers = buf[offset]; | |
124 | tx_receivers = buf[offset + 1]; | |
125 | offset += 2; | |
126 | } | |
127 | ||
b89a9f2f Y |
128 | /* Skip over sensor flags */ |
129 | if (rmi_register_desc_has_subpacket(item, 4)) | |
b43d2c1e | 130 | offset += 1; |
b43d2c1e AD |
131 | |
132 | sensor->x_mm = (pitch_x * rx_receivers) >> 12; | |
133 | sensor->y_mm = (pitch_y * tx_receivers) >> 12; | |
134 | ||
135 | rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: x_mm: %d y_mm: %d\n", __func__, | |
136 | sensor->x_mm, sensor->y_mm); | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
6d0dbeae | 141 | static void rmi_f12_process_objects(struct f12_data *f12, u8 *data1, int size) |
b43d2c1e AD |
142 | { |
143 | int i; | |
144 | struct rmi_2d_sensor *sensor = &f12->sensor; | |
6d0dbeae AD |
145 | int objects = f12->data1->num_subpackets; |
146 | ||
147 | if ((f12->data1->num_subpackets * F12_DATA1_BYTES_PER_OBJ) > size) | |
148 | objects = size / F12_DATA1_BYTES_PER_OBJ; | |
b43d2c1e | 149 | |
6d0dbeae | 150 | for (i = 0; i < objects; i++) { |
b43d2c1e AD |
151 | struct rmi_2d_sensor_abs_object *obj = &sensor->objs[i]; |
152 | ||
153 | obj->type = RMI_2D_OBJECT_NONE; | |
154 | obj->mt_tool = MT_TOOL_FINGER; | |
155 | ||
156 | switch (data1[0]) { | |
157 | case RMI_F12_OBJECT_FINGER: | |
158 | obj->type = RMI_2D_OBJECT_FINGER; | |
159 | break; | |
160 | case RMI_F12_OBJECT_STYLUS: | |
161 | obj->type = RMI_2D_OBJECT_STYLUS; | |
162 | obj->mt_tool = MT_TOOL_PEN; | |
163 | break; | |
164 | case RMI_F12_OBJECT_PALM: | |
165 | obj->type = RMI_2D_OBJECT_PALM; | |
166 | obj->mt_tool = MT_TOOL_PALM; | |
167 | break; | |
168 | case RMI_F12_OBJECT_UNCLASSIFIED: | |
169 | obj->type = RMI_2D_OBJECT_UNCLASSIFIED; | |
170 | break; | |
171 | } | |
172 | ||
173 | obj->x = (data1[2] << 8) | data1[1]; | |
174 | obj->y = (data1[4] << 8) | data1[3]; | |
175 | obj->z = data1[5]; | |
176 | obj->wx = data1[6]; | |
177 | obj->wy = data1[7]; | |
178 | ||
179 | rmi_2d_sensor_abs_process(sensor, obj, i); | |
180 | ||
6d0dbeae | 181 | data1 += F12_DATA1_BYTES_PER_OBJ; |
b43d2c1e AD |
182 | } |
183 | ||
184 | if (sensor->kernel_tracking) | |
185 | input_mt_assign_slots(sensor->input, | |
186 | sensor->tracking_slots, | |
187 | sensor->tracking_pos, | |
188 | sensor->nbr_fingers, | |
189 | sensor->dmax); | |
190 | ||
6d0dbeae | 191 | for (i = 0; i < objects; i++) |
b43d2c1e AD |
192 | rmi_2d_sensor_abs_report(sensor, &sensor->objs[i], i); |
193 | } | |
194 | ||
24d28e4f | 195 | static irqreturn_t rmi_f12_attention(int irq, void *ctx) |
b43d2c1e AD |
196 | { |
197 | int retval; | |
24d28e4f | 198 | struct rmi_function *fn = ctx; |
b43d2c1e | 199 | struct rmi_device *rmi_dev = fn->rmi_dev; |
ae9979c3 | 200 | struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); |
b43d2c1e AD |
201 | struct f12_data *f12 = dev_get_drvdata(&fn->dev); |
202 | struct rmi_2d_sensor *sensor = &f12->sensor; | |
6d0dbeae | 203 | int valid_bytes = sensor->pkt_size; |
b43d2c1e | 204 | |
ae9979c3 BT |
205 | if (drvdata->attn_data.data) { |
206 | if (sensor->attn_size > drvdata->attn_data.size) | |
207 | valid_bytes = drvdata->attn_data.size; | |
6d0dbeae AD |
208 | else |
209 | valid_bytes = sensor->attn_size; | |
ae9979c3 | 210 | memcpy(sensor->data_pkt, drvdata->attn_data.data, |
6d0dbeae | 211 | valid_bytes); |
ae9979c3 BT |
212 | drvdata->attn_data.data += sensor->attn_size; |
213 | drvdata->attn_data.size -= sensor->attn_size; | |
b43d2c1e AD |
214 | } else { |
215 | retval = rmi_read_block(rmi_dev, f12->data_addr, | |
216 | sensor->data_pkt, sensor->pkt_size); | |
217 | if (retval < 0) { | |
218 | dev_err(&fn->dev, "Failed to read object data. Code: %d.\n", | |
219 | retval); | |
24d28e4f | 220 | return IRQ_RETVAL(retval); |
b43d2c1e AD |
221 | } |
222 | } | |
223 | ||
224 | if (f12->data1) | |
225 | rmi_f12_process_objects(f12, | |
6d0dbeae | 226 | &sensor->data_pkt[f12->data1_offset], valid_bytes); |
b43d2c1e AD |
227 | |
228 | input_mt_sync_frame(sensor->input); | |
229 | ||
24d28e4f | 230 | return IRQ_HANDLED; |
b43d2c1e AD |
231 | } |
232 | ||
24f63b1c AD |
233 | static int rmi_f12_write_control_regs(struct rmi_function *fn) |
234 | { | |
235 | int ret; | |
236 | const struct rmi_register_desc_item *item; | |
237 | struct rmi_device *rmi_dev = fn->rmi_dev; | |
238 | struct f12_data *f12 = dev_get_drvdata(&fn->dev); | |
239 | int control_size; | |
240 | char buf[3]; | |
241 | u16 control_offset = 0; | |
242 | u8 subpacket_offset = 0; | |
243 | ||
244 | if (f12->has_dribble | |
245 | && (f12->sensor.dribble != RMI_REG_STATE_DEFAULT)) { | |
246 | item = rmi_get_register_desc_item(&f12->control_reg_desc, 20); | |
247 | if (item) { | |
248 | control_offset = rmi_register_desc_calc_reg_offset( | |
249 | &f12->control_reg_desc, 20); | |
250 | ||
251 | /* | |
252 | * The byte containing the EnableDribble bit will be | |
253 | * in either byte 0 or byte 2 of control 20. Depending | |
254 | * on the existence of subpacket 0. If control 20 is | |
255 | * larger then 3 bytes, just read the first 3. | |
256 | */ | |
257 | control_size = min(item->reg_size, 3UL); | |
258 | ||
259 | ret = rmi_read_block(rmi_dev, fn->fd.control_base_addr | |
260 | + control_offset, buf, control_size); | |
261 | if (ret) | |
262 | return ret; | |
263 | ||
264 | if (rmi_register_desc_has_subpacket(item, 0)) | |
265 | subpacket_offset += 1; | |
266 | ||
267 | switch (f12->sensor.dribble) { | |
268 | case RMI_REG_STATE_OFF: | |
269 | buf[subpacket_offset] &= ~BIT(2); | |
270 | break; | |
271 | case RMI_REG_STATE_ON: | |
272 | buf[subpacket_offset] |= BIT(2); | |
273 | break; | |
274 | case RMI_REG_STATE_DEFAULT: | |
275 | default: | |
276 | break; | |
277 | } | |
278 | ||
279 | ret = rmi_write_block(rmi_dev, | |
280 | fn->fd.control_base_addr + control_offset, | |
281 | buf, control_size); | |
282 | if (ret) | |
283 | return ret; | |
284 | } | |
285 | } | |
286 | ||
287 | return 0; | |
288 | ||
289 | } | |
290 | ||
b43d2c1e AD |
291 | static int rmi_f12_config(struct rmi_function *fn) |
292 | { | |
293 | struct rmi_driver *drv = fn->rmi_dev->driver; | |
24f63b1c | 294 | int ret; |
b43d2c1e AD |
295 | |
296 | drv->set_irq_bits(fn->rmi_dev, fn->irq_mask); | |
297 | ||
24f63b1c AD |
298 | ret = rmi_f12_write_control_regs(fn); |
299 | if (ret) | |
300 | dev_warn(&fn->dev, | |
301 | "Failed to write F12 control registers: %d\n", ret); | |
302 | ||
b43d2c1e AD |
303 | return 0; |
304 | } | |
305 | ||
306 | static int rmi_f12_probe(struct rmi_function *fn) | |
307 | { | |
308 | struct f12_data *f12; | |
309 | int ret; | |
310 | struct rmi_device *rmi_dev = fn->rmi_dev; | |
311 | char buf; | |
312 | u16 query_addr = fn->fd.query_base_addr; | |
313 | const struct rmi_register_desc_item *item; | |
314 | struct rmi_2d_sensor *sensor; | |
315 | struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev); | |
ae9979c3 | 316 | struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); |
b43d2c1e AD |
317 | u16 data_offset = 0; |
318 | ||
319 | rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s\n", __func__); | |
320 | ||
321 | ret = rmi_read(fn->rmi_dev, query_addr, &buf); | |
322 | if (ret < 0) { | |
323 | dev_err(&fn->dev, "Failed to read general info register: %d\n", | |
324 | ret); | |
325 | return -ENODEV; | |
326 | } | |
327 | ++query_addr; | |
328 | ||
24f63b1c | 329 | if (!(buf & BIT(0))) { |
b43d2c1e AD |
330 | dev_err(&fn->dev, |
331 | "Behavior of F12 without register descriptors is undefined.\n"); | |
332 | return -ENODEV; | |
333 | } | |
334 | ||
335 | f12 = devm_kzalloc(&fn->dev, sizeof(struct f12_data), GFP_KERNEL); | |
336 | if (!f12) | |
337 | return -ENOMEM; | |
338 | ||
24f63b1c AD |
339 | f12->has_dribble = !!(buf & BIT(3)); |
340 | ||
b43d2c1e AD |
341 | if (fn->dev.of_node) { |
342 | ret = rmi_2d_sensor_of_probe(&fn->dev, &f12->sensor_pdata); | |
343 | if (ret) | |
344 | return ret; | |
0a135b88 BT |
345 | } else { |
346 | f12->sensor_pdata = pdata->sensor_pdata; | |
b43d2c1e AD |
347 | } |
348 | ||
349 | ret = rmi_read_register_desc(rmi_dev, query_addr, | |
350 | &f12->query_reg_desc); | |
351 | if (ret) { | |
352 | dev_err(&fn->dev, | |
353 | "Failed to read the Query Register Descriptor: %d\n", | |
354 | ret); | |
355 | return ret; | |
356 | } | |
357 | query_addr += 3; | |
358 | ||
359 | ret = rmi_read_register_desc(rmi_dev, query_addr, | |
360 | &f12->control_reg_desc); | |
361 | if (ret) { | |
362 | dev_err(&fn->dev, | |
363 | "Failed to read the Control Register Descriptor: %d\n", | |
364 | ret); | |
365 | return ret; | |
366 | } | |
367 | query_addr += 3; | |
368 | ||
369 | ret = rmi_read_register_desc(rmi_dev, query_addr, | |
370 | &f12->data_reg_desc); | |
371 | if (ret) { | |
372 | dev_err(&fn->dev, | |
373 | "Failed to read the Data Register Descriptor: %d\n", | |
374 | ret); | |
375 | return ret; | |
376 | } | |
377 | query_addr += 3; | |
378 | ||
379 | sensor = &f12->sensor; | |
380 | sensor->fn = fn; | |
381 | f12->data_addr = fn->fd.data_base_addr; | |
382 | sensor->pkt_size = rmi_register_desc_calc_size(&f12->data_reg_desc); | |
383 | ||
384 | sensor->axis_align = | |
385 | f12->sensor_pdata.axis_align; | |
386 | ||
387 | sensor->x_mm = f12->sensor_pdata.x_mm; | |
388 | sensor->y_mm = f12->sensor_pdata.y_mm; | |
24f63b1c | 389 | sensor->dribble = f12->sensor_pdata.dribble; |
b43d2c1e AD |
390 | |
391 | if (sensor->sensor_type == rmi_sensor_default) | |
392 | sensor->sensor_type = | |
393 | f12->sensor_pdata.sensor_type; | |
394 | ||
395 | rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: data packet size: %d\n", __func__, | |
396 | sensor->pkt_size); | |
397 | sensor->data_pkt = devm_kzalloc(&fn->dev, sensor->pkt_size, GFP_KERNEL); | |
398 | if (!sensor->data_pkt) | |
399 | return -ENOMEM; | |
400 | ||
401 | dev_set_drvdata(&fn->dev, f12); | |
402 | ||
403 | ret = rmi_f12_read_sensor_tuning(f12); | |
404 | if (ret) | |
405 | return ret; | |
406 | ||
407 | /* | |
408 | * Figure out what data is contained in the data registers. HID devices | |
409 | * may have registers defined, but their data is not reported in the | |
410 | * HID attention report. Registers which are not reported in the HID | |
411 | * attention report check to see if the device is receiving data from | |
412 | * HID attention reports. | |
413 | */ | |
414 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 0); | |
ae9979c3 | 415 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
416 | data_offset += item->reg_size; |
417 | ||
418 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 1); | |
419 | if (item) { | |
420 | f12->data1 = item; | |
421 | f12->data1_offset = data_offset; | |
422 | data_offset += item->reg_size; | |
423 | sensor->nbr_fingers = item->num_subpackets; | |
424 | sensor->report_abs = 1; | |
425 | sensor->attn_size += item->reg_size; | |
426 | } | |
427 | ||
428 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 2); | |
ae9979c3 | 429 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
430 | data_offset += item->reg_size; |
431 | ||
432 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 3); | |
ae9979c3 | 433 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
434 | data_offset += item->reg_size; |
435 | ||
436 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 4); | |
ae9979c3 | 437 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
438 | data_offset += item->reg_size; |
439 | ||
440 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 5); | |
441 | if (item) { | |
442 | f12->data5 = item; | |
443 | f12->data5_offset = data_offset; | |
444 | data_offset += item->reg_size; | |
445 | sensor->attn_size += item->reg_size; | |
446 | } | |
447 | ||
448 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 6); | |
ae9979c3 | 449 | if (item && !drvdata->attn_data.data) { |
b43d2c1e AD |
450 | f12->data6 = item; |
451 | f12->data6_offset = data_offset; | |
452 | data_offset += item->reg_size; | |
453 | } | |
454 | ||
455 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 7); | |
ae9979c3 | 456 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
457 | data_offset += item->reg_size; |
458 | ||
459 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 8); | |
ae9979c3 | 460 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
461 | data_offset += item->reg_size; |
462 | ||
463 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 9); | |
ae9979c3 | 464 | if (item && !drvdata->attn_data.data) { |
b43d2c1e AD |
465 | f12->data9 = item; |
466 | f12->data9_offset = data_offset; | |
467 | data_offset += item->reg_size; | |
468 | if (!sensor->report_abs) | |
469 | sensor->report_rel = 1; | |
470 | } | |
471 | ||
472 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 10); | |
ae9979c3 | 473 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
474 | data_offset += item->reg_size; |
475 | ||
476 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 11); | |
ae9979c3 | 477 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
478 | data_offset += item->reg_size; |
479 | ||
480 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 12); | |
ae9979c3 | 481 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
482 | data_offset += item->reg_size; |
483 | ||
484 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 13); | |
ae9979c3 | 485 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
486 | data_offset += item->reg_size; |
487 | ||
488 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 14); | |
ae9979c3 | 489 | if (item && !drvdata->attn_data.data) |
b43d2c1e AD |
490 | data_offset += item->reg_size; |
491 | ||
492 | item = rmi_get_register_desc_item(&f12->data_reg_desc, 15); | |
ae9979c3 | 493 | if (item && !drvdata->attn_data.data) { |
b43d2c1e AD |
494 | f12->data15 = item; |
495 | f12->data15_offset = data_offset; | |
496 | data_offset += item->reg_size; | |
497 | } | |
498 | ||
499 | /* allocate the in-kernel tracking buffers */ | |
a86854d0 KC |
500 | sensor->tracking_pos = devm_kcalloc(&fn->dev, |
501 | sensor->nbr_fingers, sizeof(struct input_mt_pos), | |
502 | GFP_KERNEL); | |
503 | sensor->tracking_slots = devm_kcalloc(&fn->dev, | |
504 | sensor->nbr_fingers, sizeof(int), GFP_KERNEL); | |
505 | sensor->objs = devm_kcalloc(&fn->dev, | |
506 | sensor->nbr_fingers, | |
507 | sizeof(struct rmi_2d_sensor_abs_object), | |
b43d2c1e | 508 | GFP_KERNEL); |
b43d2c1e AD |
509 | if (!sensor->tracking_pos || !sensor->tracking_slots || !sensor->objs) |
510 | return -ENOMEM; | |
511 | ||
512 | ret = rmi_2d_sensor_configure_input(fn, sensor); | |
513 | if (ret) | |
514 | return ret; | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | struct rmi_function_handler rmi_f12_handler = { | |
520 | .driver = { | |
521 | .name = "rmi4_f12", | |
522 | }, | |
523 | .func = 0x12, | |
524 | .probe = rmi_f12_probe, | |
525 | .config = rmi_f12_config, | |
526 | .attention = rmi_f12_attention, | |
527 | }; |