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9fb6bf02 BT |
1 | /* |
2 | * Copyright (c) 2013 Andrew Duggan <aduggan@synaptics.com> | |
3 | * Copyright (c) 2013 Synaptics Incorporated | |
4 | * Copyright (c) 2014 Benjamin Tissoires <benjamin.tissoires@gmail.com> | |
5 | * Copyright (c) 2014 Red Hat, Inc | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the Free | |
9 | * Software Foundation; either version 2 of the License, or (at your option) | |
10 | * any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/hid.h> | |
15 | #include <linux/input.h> | |
16 | #include <linux/input/mt.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/pm.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/wait.h> | |
21 | #include <linux/sched.h> | |
22 | #include "hid-ids.h" | |
23 | ||
24 | #define RMI_MOUSE_REPORT_ID 0x01 /* Mouse emulation Report */ | |
25 | #define RMI_WRITE_REPORT_ID 0x09 /* Output Report */ | |
26 | #define RMI_READ_ADDR_REPORT_ID 0x0a /* Output Report */ | |
27 | #define RMI_READ_DATA_REPORT_ID 0x0b /* Input Report */ | |
28 | #define RMI_ATTN_REPORT_ID 0x0c /* Input Report */ | |
29 | #define RMI_SET_RMI_MODE_REPORT_ID 0x0f /* Feature Report */ | |
30 | ||
31 | /* flags */ | |
af43c408 DC |
32 | #define RMI_READ_REQUEST_PENDING 0 |
33 | #define RMI_READ_DATA_PENDING 1 | |
34 | #define RMI_STARTED 2 | |
9fb6bf02 | 35 | |
2f43de60 AD |
36 | /* device flags */ |
37 | #define RMI_DEVICE BIT(0) | |
79364d87 | 38 | #define RMI_DEVICE_HAS_PHYS_BUTTONS BIT(1) |
2f43de60 | 39 | |
9fb6bf02 BT |
40 | enum rmi_mode_type { |
41 | RMI_MODE_OFF = 0, | |
42 | RMI_MODE_ATTN_REPORTS = 1, | |
43 | RMI_MODE_NO_PACKED_ATTN_REPORTS = 2, | |
44 | }; | |
45 | ||
46 | struct rmi_function { | |
47 | unsigned page; /* page of the function */ | |
48 | u16 query_base_addr; /* base address for queries */ | |
49 | u16 command_base_addr; /* base address for commands */ | |
50 | u16 control_base_addr; /* base address for controls */ | |
51 | u16 data_base_addr; /* base address for datas */ | |
52 | unsigned int interrupt_base; /* cross-function interrupt number | |
53 | * (uniq in the device)*/ | |
54 | unsigned int interrupt_count; /* number of interrupts */ | |
55 | unsigned int report_size; /* size of a report */ | |
56 | unsigned long irq_mask; /* mask of the interrupts | |
57 | * (to be applied against ATTN IRQ) */ | |
58 | }; | |
59 | ||
60 | /** | |
61 | * struct rmi_data - stores information for hid communication | |
62 | * | |
63 | * @page_mutex: Locks current page to avoid changing pages in unexpected ways. | |
64 | * @page: Keeps track of the current virtual page | |
65 | * | |
66 | * @wait: Used for waiting for read data | |
67 | * | |
68 | * @writeReport: output buffer when writing RMI registers | |
69 | * @readReport: input buffer when reading RMI registers | |
70 | * | |
71 | * @input_report_size: size of an input report (advertised by HID) | |
72 | * @output_report_size: size of an output report (advertised by HID) | |
73 | * | |
74 | * @flags: flags for the current device (started, reading, etc...) | |
75 | * | |
76 | * @f11: placeholder of internal RMI function F11 description | |
77 | * @f30: placeholder of internal RMI function F30 description | |
78 | * | |
79 | * @max_fingers: maximum finger count reported by the device | |
80 | * @max_x: maximum x value reported by the device | |
81 | * @max_y: maximum y value reported by the device | |
82 | * | |
83 | * @gpio_led_count: count of GPIOs + LEDs reported by F30 | |
84 | * @button_count: actual physical buttons count | |
85 | * @button_mask: button mask used to decode GPIO ATTN reports | |
86 | * @button_state_mask: pull state of the buttons | |
87 | * | |
88 | * @input: pointer to the kernel input device | |
89 | * | |
90 | * @reset_work: worker which will be called in case of a mouse report | |
91 | * @hdev: pointer to the struct hid_device | |
92 | */ | |
93 | struct rmi_data { | |
94 | struct mutex page_mutex; | |
95 | int page; | |
96 | ||
97 | wait_queue_head_t wait; | |
98 | ||
99 | u8 *writeReport; | |
100 | u8 *readReport; | |
101 | ||
102 | int input_report_size; | |
103 | int output_report_size; | |
104 | ||
105 | unsigned long flags; | |
106 | ||
70e003f7 | 107 | struct rmi_function f01; |
9fb6bf02 BT |
108 | struct rmi_function f11; |
109 | struct rmi_function f30; | |
110 | ||
111 | unsigned int max_fingers; | |
112 | unsigned int max_x; | |
113 | unsigned int max_y; | |
114 | unsigned int x_size_mm; | |
115 | unsigned int y_size_mm; | |
116 | ||
117 | unsigned int gpio_led_count; | |
118 | unsigned int button_count; | |
119 | unsigned long button_mask; | |
120 | unsigned long button_state_mask; | |
121 | ||
122 | struct input_dev *input; | |
123 | ||
124 | struct work_struct reset_work; | |
125 | struct hid_device *hdev; | |
2f43de60 AD |
126 | |
127 | unsigned long device_flags; | |
70e003f7 | 128 | unsigned long firmware_id; |
9fb6bf02 BT |
129 | }; |
130 | ||
131 | #define RMI_PAGE(addr) (((addr) >> 8) & 0xff) | |
132 | ||
133 | static int rmi_write_report(struct hid_device *hdev, u8 *report, int len); | |
134 | ||
135 | /** | |
136 | * rmi_set_page - Set RMI page | |
137 | * @hdev: The pointer to the hid_device struct | |
138 | * @page: The new page address. | |
139 | * | |
140 | * RMI devices have 16-bit addressing, but some of the physical | |
141 | * implementations (like SMBus) only have 8-bit addressing. So RMI implements | |
142 | * a page address at 0xff of every page so we can reliable page addresses | |
143 | * every 256 registers. | |
144 | * | |
145 | * The page_mutex lock must be held when this function is entered. | |
146 | * | |
147 | * Returns zero on success, non-zero on failure. | |
148 | */ | |
149 | static int rmi_set_page(struct hid_device *hdev, u8 page) | |
150 | { | |
151 | struct rmi_data *data = hid_get_drvdata(hdev); | |
152 | int retval; | |
153 | ||
154 | data->writeReport[0] = RMI_WRITE_REPORT_ID; | |
155 | data->writeReport[1] = 1; | |
156 | data->writeReport[2] = 0xFF; | |
157 | data->writeReport[4] = page; | |
158 | ||
159 | retval = rmi_write_report(hdev, data->writeReport, | |
160 | data->output_report_size); | |
161 | if (retval != data->output_report_size) { | |
162 | dev_err(&hdev->dev, | |
163 | "%s: set page failed: %d.", __func__, retval); | |
164 | return retval; | |
165 | } | |
166 | ||
167 | data->page = page; | |
168 | return 0; | |
169 | } | |
170 | ||
171 | static int rmi_set_mode(struct hid_device *hdev, u8 mode) | |
172 | { | |
173 | int ret; | |
174 | u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode}; | |
175 | ||
176 | ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, txbuf, | |
177 | sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
178 | if (ret < 0) { | |
179 | dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode, | |
180 | ret); | |
181 | return ret; | |
182 | } | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | static int rmi_write_report(struct hid_device *hdev, u8 *report, int len) | |
188 | { | |
189 | int ret; | |
190 | ||
191 | ret = hid_hw_output_report(hdev, (void *)report, len); | |
192 | if (ret < 0) { | |
193 | dev_err(&hdev->dev, "failed to write hid report (%d)\n", ret); | |
194 | return ret; | |
195 | } | |
196 | ||
197 | return ret; | |
198 | } | |
199 | ||
200 | static int rmi_read_block(struct hid_device *hdev, u16 addr, void *buf, | |
201 | const int len) | |
202 | { | |
203 | struct rmi_data *data = hid_get_drvdata(hdev); | |
204 | int ret; | |
205 | int bytes_read; | |
206 | int bytes_needed; | |
207 | int retries; | |
208 | int read_input_count; | |
209 | ||
210 | mutex_lock(&data->page_mutex); | |
211 | ||
212 | if (RMI_PAGE(addr) != data->page) { | |
213 | ret = rmi_set_page(hdev, RMI_PAGE(addr)); | |
214 | if (ret < 0) | |
215 | goto exit; | |
216 | } | |
217 | ||
218 | for (retries = 5; retries > 0; retries--) { | |
219 | data->writeReport[0] = RMI_READ_ADDR_REPORT_ID; | |
220 | data->writeReport[1] = 0; /* old 1 byte read count */ | |
221 | data->writeReport[2] = addr & 0xFF; | |
222 | data->writeReport[3] = (addr >> 8) & 0xFF; | |
223 | data->writeReport[4] = len & 0xFF; | |
224 | data->writeReport[5] = (len >> 8) & 0xFF; | |
225 | ||
226 | set_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
227 | ||
228 | ret = rmi_write_report(hdev, data->writeReport, | |
229 | data->output_report_size); | |
230 | if (ret != data->output_report_size) { | |
231 | clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
232 | dev_err(&hdev->dev, | |
233 | "failed to write request output report (%d)\n", | |
234 | ret); | |
235 | goto exit; | |
236 | } | |
237 | ||
238 | bytes_read = 0; | |
239 | bytes_needed = len; | |
240 | while (bytes_read < len) { | |
241 | if (!wait_event_timeout(data->wait, | |
242 | test_bit(RMI_READ_DATA_PENDING, &data->flags), | |
243 | msecs_to_jiffies(1000))) { | |
244 | hid_warn(hdev, "%s: timeout elapsed\n", | |
245 | __func__); | |
246 | ret = -EAGAIN; | |
247 | break; | |
248 | } | |
249 | ||
250 | read_input_count = data->readReport[1]; | |
251 | memcpy(buf + bytes_read, &data->readReport[2], | |
252 | read_input_count < bytes_needed ? | |
253 | read_input_count : bytes_needed); | |
254 | ||
255 | bytes_read += read_input_count; | |
256 | bytes_needed -= read_input_count; | |
257 | clear_bit(RMI_READ_DATA_PENDING, &data->flags); | |
258 | } | |
259 | ||
260 | if (ret >= 0) { | |
261 | ret = 0; | |
262 | break; | |
263 | } | |
264 | } | |
265 | ||
266 | exit: | |
267 | clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
268 | mutex_unlock(&data->page_mutex); | |
269 | return ret; | |
270 | } | |
271 | ||
272 | static inline int rmi_read(struct hid_device *hdev, u16 addr, void *buf) | |
273 | { | |
274 | return rmi_read_block(hdev, addr, buf, 1); | |
275 | } | |
276 | ||
dd8df284 AD |
277 | static int rmi_write_block(struct hid_device *hdev, u16 addr, void *buf, |
278 | const int len) | |
279 | { | |
280 | struct rmi_data *data = hid_get_drvdata(hdev); | |
281 | int ret; | |
282 | ||
283 | mutex_lock(&data->page_mutex); | |
284 | ||
285 | if (RMI_PAGE(addr) != data->page) { | |
286 | ret = rmi_set_page(hdev, RMI_PAGE(addr)); | |
287 | if (ret < 0) | |
288 | goto exit; | |
289 | } | |
290 | ||
291 | data->writeReport[0] = RMI_WRITE_REPORT_ID; | |
292 | data->writeReport[1] = len; | |
293 | data->writeReport[2] = addr & 0xFF; | |
294 | data->writeReport[3] = (addr >> 8) & 0xFF; | |
295 | memcpy(&data->writeReport[4], buf, len); | |
296 | ||
297 | ret = rmi_write_report(hdev, data->writeReport, | |
298 | data->output_report_size); | |
299 | if (ret < 0) { | |
300 | dev_err(&hdev->dev, | |
301 | "failed to write request output report (%d)\n", | |
302 | ret); | |
303 | goto exit; | |
304 | } | |
305 | ret = 0; | |
306 | ||
307 | exit: | |
308 | mutex_unlock(&data->page_mutex); | |
309 | return ret; | |
310 | } | |
311 | ||
312 | static inline int rmi_write(struct hid_device *hdev, u16 addr, void *buf) | |
313 | { | |
314 | return rmi_write_block(hdev, addr, buf, 1); | |
315 | } | |
316 | ||
9fb6bf02 BT |
317 | static void rmi_f11_process_touch(struct rmi_data *hdata, int slot, |
318 | u8 finger_state, u8 *touch_data) | |
319 | { | |
320 | int x, y, wx, wy; | |
321 | int wide, major, minor; | |
322 | int z; | |
323 | ||
324 | input_mt_slot(hdata->input, slot); | |
325 | input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, | |
326 | finger_state == 0x01); | |
327 | if (finger_state == 0x01) { | |
876e7a8a | 328 | x = (touch_data[0] << 4) | (touch_data[2] & 0x0F); |
9fb6bf02 | 329 | y = (touch_data[1] << 4) | (touch_data[2] >> 4); |
876e7a8a | 330 | wx = touch_data[3] & 0x0F; |
9fb6bf02 BT |
331 | wy = touch_data[3] >> 4; |
332 | wide = (wx > wy); | |
333 | major = max(wx, wy); | |
334 | minor = min(wx, wy); | |
335 | z = touch_data[4]; | |
336 | ||
337 | /* y is inverted */ | |
338 | y = hdata->max_y - y; | |
339 | ||
340 | input_event(hdata->input, EV_ABS, ABS_MT_POSITION_X, x); | |
341 | input_event(hdata->input, EV_ABS, ABS_MT_POSITION_Y, y); | |
342 | input_event(hdata->input, EV_ABS, ABS_MT_ORIENTATION, wide); | |
343 | input_event(hdata->input, EV_ABS, ABS_MT_PRESSURE, z); | |
344 | input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); | |
345 | input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
346 | } | |
347 | } | |
348 | ||
349 | static void rmi_reset_work(struct work_struct *work) | |
350 | { | |
351 | struct rmi_data *hdata = container_of(work, struct rmi_data, | |
352 | reset_work); | |
353 | ||
354 | /* switch the device to RMI if we receive a generic mouse report */ | |
355 | rmi_set_mode(hdata->hdev, RMI_MODE_ATTN_REPORTS); | |
356 | } | |
357 | ||
358 | static inline int rmi_schedule_reset(struct hid_device *hdev) | |
359 | { | |
360 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
361 | return schedule_work(&hdata->reset_work); | |
362 | } | |
363 | ||
364 | static int rmi_f11_input_event(struct hid_device *hdev, u8 irq, u8 *data, | |
365 | int size) | |
366 | { | |
367 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
368 | int offset; | |
369 | int i; | |
370 | ||
5b65c2a0 | 371 | if (!(irq & hdata->f11.irq_mask) || size <= 0) |
9fb6bf02 BT |
372 | return 0; |
373 | ||
374 | offset = (hdata->max_fingers >> 2) + 1; | |
375 | for (i = 0; i < hdata->max_fingers; i++) { | |
376 | int fs_byte_position = i >> 2; | |
377 | int fs_bit_position = (i & 0x3) << 1; | |
378 | int finger_state = (data[fs_byte_position] >> fs_bit_position) & | |
379 | 0x03; | |
5b65c2a0 BT |
380 | int position = offset + 5 * i; |
381 | ||
382 | if (position + 5 > size) { | |
383 | /* partial report, go on with what we received */ | |
384 | printk_once(KERN_WARNING | |
385 | "%s %s: Detected incomplete finger report. Finger reports may occasionally get dropped on this platform.\n", | |
386 | dev_driver_string(&hdev->dev), | |
387 | dev_name(&hdev->dev)); | |
388 | hid_dbg(hdev, "Incomplete finger report\n"); | |
389 | break; | |
390 | } | |
9fb6bf02 | 391 | |
5b65c2a0 | 392 | rmi_f11_process_touch(hdata, i, finger_state, &data[position]); |
9fb6bf02 BT |
393 | } |
394 | input_mt_sync_frame(hdata->input); | |
395 | input_sync(hdata->input); | |
396 | return hdata->f11.report_size; | |
397 | } | |
398 | ||
399 | static int rmi_f30_input_event(struct hid_device *hdev, u8 irq, u8 *data, | |
400 | int size) | |
401 | { | |
402 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
403 | int i; | |
404 | int button = 0; | |
405 | bool value; | |
406 | ||
407 | if (!(irq & hdata->f30.irq_mask)) | |
408 | return 0; | |
409 | ||
5b65c2a0 BT |
410 | if (size < (int)hdata->f30.report_size) { |
411 | hid_warn(hdev, "Click Button pressed, but the click data is missing\n"); | |
412 | return 0; | |
413 | } | |
414 | ||
9fb6bf02 BT |
415 | for (i = 0; i < hdata->gpio_led_count; i++) { |
416 | if (test_bit(i, &hdata->button_mask)) { | |
417 | value = (data[i / 8] >> (i & 0x07)) & BIT(0); | |
418 | if (test_bit(i, &hdata->button_state_mask)) | |
419 | value = !value; | |
420 | input_event(hdata->input, EV_KEY, BTN_LEFT + button++, | |
421 | value); | |
422 | } | |
423 | } | |
424 | return hdata->f30.report_size; | |
425 | } | |
426 | ||
427 | static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) | |
428 | { | |
429 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
430 | unsigned long irq_mask = 0; | |
431 | unsigned index = 2; | |
432 | ||
433 | if (!(test_bit(RMI_STARTED, &hdata->flags))) | |
434 | return 0; | |
435 | ||
436 | irq_mask |= hdata->f11.irq_mask; | |
437 | irq_mask |= hdata->f30.irq_mask; | |
438 | ||
439 | if (data[1] & ~irq_mask) | |
01a5f8a4 | 440 | hid_dbg(hdev, "unknown intr source:%02lx %s:%d\n", |
9fb6bf02 BT |
441 | data[1] & ~irq_mask, __FILE__, __LINE__); |
442 | ||
443 | if (hdata->f11.interrupt_base < hdata->f30.interrupt_base) { | |
444 | index += rmi_f11_input_event(hdev, data[1], &data[index], | |
445 | size - index); | |
446 | index += rmi_f30_input_event(hdev, data[1], &data[index], | |
447 | size - index); | |
448 | } else { | |
449 | index += rmi_f30_input_event(hdev, data[1], &data[index], | |
450 | size - index); | |
451 | index += rmi_f11_input_event(hdev, data[1], &data[index], | |
452 | size - index); | |
453 | } | |
454 | ||
455 | return 1; | |
456 | } | |
457 | ||
458 | static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size) | |
459 | { | |
460 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
461 | ||
462 | if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) { | |
01a5f8a4 | 463 | hid_dbg(hdev, "no read request pending\n"); |
9fb6bf02 BT |
464 | return 0; |
465 | } | |
466 | ||
467 | memcpy(hdata->readReport, data, size < hdata->input_report_size ? | |
468 | size : hdata->input_report_size); | |
469 | set_bit(RMI_READ_DATA_PENDING, &hdata->flags); | |
470 | wake_up(&hdata->wait); | |
471 | ||
472 | return 1; | |
473 | } | |
474 | ||
5b65c2a0 BT |
475 | static int rmi_check_sanity(struct hid_device *hdev, u8 *data, int size) |
476 | { | |
477 | int valid_size = size; | |
478 | /* | |
479 | * On the Dell XPS 13 9333, the bus sometimes get confused and fills | |
480 | * the report with a sentinel value "ff". Synaptics told us that such | |
481 | * behavior does not comes from the touchpad itself, so we filter out | |
482 | * such reports here. | |
483 | */ | |
484 | ||
485 | while ((data[valid_size - 1] == 0xff) && valid_size > 0) | |
486 | valid_size--; | |
487 | ||
488 | return valid_size; | |
489 | } | |
490 | ||
9fb6bf02 BT |
491 | static int rmi_raw_event(struct hid_device *hdev, |
492 | struct hid_report *report, u8 *data, int size) | |
493 | { | |
5b65c2a0 BT |
494 | size = rmi_check_sanity(hdev, data, size); |
495 | if (size < 2) | |
496 | return 0; | |
497 | ||
9fb6bf02 BT |
498 | switch (data[0]) { |
499 | case RMI_READ_DATA_REPORT_ID: | |
500 | return rmi_read_data_event(hdev, data, size); | |
501 | case RMI_ATTN_REPORT_ID: | |
502 | return rmi_input_event(hdev, data, size); | |
2f43de60 AD |
503 | default: |
504 | return 1; | |
505 | } | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | static int rmi_event(struct hid_device *hdev, struct hid_field *field, | |
511 | struct hid_usage *usage, __s32 value) | |
512 | { | |
513 | struct rmi_data *data = hid_get_drvdata(hdev); | |
514 | ||
515 | if ((data->device_flags & RMI_DEVICE) && | |
516 | (field->application == HID_GD_POINTER || | |
517 | field->application == HID_GD_MOUSE)) { | |
79364d87 AD |
518 | if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) { |
519 | if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) | |
520 | return 0; | |
521 | ||
522 | if ((usage->hid == HID_GD_X || usage->hid == HID_GD_Y) | |
523 | && !value) | |
524 | return 1; | |
525 | } | |
526 | ||
9fb6bf02 | 527 | rmi_schedule_reset(hdev); |
2f43de60 | 528 | return 1; |
9fb6bf02 BT |
529 | } |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
a278e268 | 534 | #ifdef CONFIG_PM |
9fb6bf02 BT |
535 | static int rmi_post_reset(struct hid_device *hdev) |
536 | { | |
537 | return rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
538 | } | |
539 | ||
540 | static int rmi_post_resume(struct hid_device *hdev) | |
541 | { | |
542 | return rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
543 | } | |
a278e268 | 544 | #endif /* CONFIG_PM */ |
9fb6bf02 BT |
545 | |
546 | #define RMI4_MAX_PAGE 0xff | |
547 | #define RMI4_PAGE_SIZE 0x0100 | |
548 | ||
549 | #define PDT_START_SCAN_LOCATION 0x00e9 | |
550 | #define PDT_END_SCAN_LOCATION 0x0005 | |
551 | #define RMI4_END_OF_PDT(id) ((id) == 0x00 || (id) == 0xff) | |
552 | ||
553 | struct pdt_entry { | |
554 | u8 query_base_addr:8; | |
555 | u8 command_base_addr:8; | |
556 | u8 control_base_addr:8; | |
557 | u8 data_base_addr:8; | |
558 | u8 interrupt_source_count:3; | |
559 | u8 bits3and4:2; | |
560 | u8 function_version:2; | |
561 | u8 bit7:1; | |
562 | u8 function_number:8; | |
563 | } __attribute__((__packed__)); | |
564 | ||
565 | static inline unsigned long rmi_gen_mask(unsigned irq_base, unsigned irq_count) | |
566 | { | |
567 | return GENMASK(irq_count + irq_base - 1, irq_base); | |
568 | } | |
569 | ||
570 | static void rmi_register_function(struct rmi_data *data, | |
571 | struct pdt_entry *pdt_entry, int page, unsigned interrupt_count) | |
572 | { | |
573 | struct rmi_function *f = NULL; | |
574 | u16 page_base = page << 8; | |
575 | ||
576 | switch (pdt_entry->function_number) { | |
70e003f7 AD |
577 | case 0x01: |
578 | f = &data->f01; | |
579 | break; | |
9fb6bf02 BT |
580 | case 0x11: |
581 | f = &data->f11; | |
582 | break; | |
583 | case 0x30: | |
584 | f = &data->f30; | |
585 | break; | |
586 | } | |
587 | ||
588 | if (f) { | |
589 | f->page = page; | |
590 | f->query_base_addr = page_base | pdt_entry->query_base_addr; | |
591 | f->command_base_addr = page_base | pdt_entry->command_base_addr; | |
592 | f->control_base_addr = page_base | pdt_entry->control_base_addr; | |
593 | f->data_base_addr = page_base | pdt_entry->data_base_addr; | |
594 | f->interrupt_base = interrupt_count; | |
595 | f->interrupt_count = pdt_entry->interrupt_source_count; | |
596 | f->irq_mask = rmi_gen_mask(f->interrupt_base, | |
597 | f->interrupt_count); | |
598 | } | |
599 | } | |
600 | ||
601 | static int rmi_scan_pdt(struct hid_device *hdev) | |
602 | { | |
603 | struct rmi_data *data = hid_get_drvdata(hdev); | |
604 | struct pdt_entry entry; | |
605 | int page; | |
606 | bool page_has_function; | |
607 | int i; | |
608 | int retval; | |
609 | int interrupt = 0; | |
610 | u16 page_start, pdt_start , pdt_end; | |
611 | ||
612 | hid_info(hdev, "Scanning PDT...\n"); | |
613 | ||
614 | for (page = 0; (page <= RMI4_MAX_PAGE); page++) { | |
615 | page_start = RMI4_PAGE_SIZE * page; | |
616 | pdt_start = page_start + PDT_START_SCAN_LOCATION; | |
617 | pdt_end = page_start + PDT_END_SCAN_LOCATION; | |
618 | ||
619 | page_has_function = false; | |
620 | for (i = pdt_start; i >= pdt_end; i -= sizeof(entry)) { | |
621 | retval = rmi_read_block(hdev, i, &entry, sizeof(entry)); | |
622 | if (retval) { | |
623 | hid_err(hdev, | |
624 | "Read of PDT entry at %#06x failed.\n", | |
625 | i); | |
626 | goto error_exit; | |
627 | } | |
628 | ||
629 | if (RMI4_END_OF_PDT(entry.function_number)) | |
630 | break; | |
631 | ||
632 | page_has_function = true; | |
633 | ||
634 | hid_info(hdev, "Found F%02X on page %#04x\n", | |
635 | entry.function_number, page); | |
636 | ||
637 | rmi_register_function(data, &entry, page, interrupt); | |
638 | interrupt += entry.interrupt_source_count; | |
639 | } | |
640 | ||
641 | if (!page_has_function) | |
642 | break; | |
643 | } | |
644 | ||
645 | hid_info(hdev, "%s: Done with PDT scan.\n", __func__); | |
646 | retval = 0; | |
647 | ||
648 | error_exit: | |
649 | return retval; | |
650 | } | |
651 | ||
70e003f7 AD |
652 | #define RMI_DEVICE_F01_BASIC_QUERY_LEN 11 |
653 | ||
654 | static int rmi_populate_f01(struct hid_device *hdev) | |
655 | { | |
656 | struct rmi_data *data = hid_get_drvdata(hdev); | |
657 | u8 basic_queries[RMI_DEVICE_F01_BASIC_QUERY_LEN]; | |
658 | u8 info[3]; | |
659 | int ret; | |
660 | bool has_query42; | |
661 | bool has_lts; | |
662 | bool has_sensor_id; | |
663 | bool has_ds4_queries = false; | |
664 | bool has_build_id_query = false; | |
665 | bool has_package_id_query = false; | |
666 | u16 query_offset = data->f01.query_base_addr; | |
667 | u16 prod_info_addr; | |
668 | u8 ds4_query_len; | |
669 | ||
670 | ret = rmi_read_block(hdev, query_offset, basic_queries, | |
671 | RMI_DEVICE_F01_BASIC_QUERY_LEN); | |
672 | if (ret) { | |
673 | hid_err(hdev, "Can not read basic queries from Function 0x1.\n"); | |
674 | return ret; | |
675 | } | |
676 | ||
677 | has_lts = !!(basic_queries[0] & BIT(2)); | |
678 | has_sensor_id = !!(basic_queries[1] & BIT(3)); | |
679 | has_query42 = !!(basic_queries[1] & BIT(7)); | |
680 | ||
681 | query_offset += 11; | |
682 | prod_info_addr = query_offset + 6; | |
683 | query_offset += 10; | |
684 | ||
685 | if (has_lts) | |
686 | query_offset += 20; | |
687 | ||
688 | if (has_sensor_id) | |
689 | query_offset++; | |
690 | ||
691 | if (has_query42) { | |
692 | ret = rmi_read(hdev, query_offset, info); | |
693 | if (ret) { | |
694 | hid_err(hdev, "Can not read query42.\n"); | |
695 | return ret; | |
696 | } | |
697 | has_ds4_queries = !!(info[0] & BIT(0)); | |
698 | query_offset++; | |
699 | } | |
700 | ||
701 | if (has_ds4_queries) { | |
702 | ret = rmi_read(hdev, query_offset, &ds4_query_len); | |
703 | if (ret) { | |
704 | hid_err(hdev, "Can not read DS4 Query length.\n"); | |
705 | return ret; | |
706 | } | |
707 | query_offset++; | |
708 | ||
709 | if (ds4_query_len > 0) { | |
710 | ret = rmi_read(hdev, query_offset, info); | |
711 | if (ret) { | |
712 | hid_err(hdev, "Can not read DS4 query.\n"); | |
713 | return ret; | |
714 | } | |
715 | ||
716 | has_package_id_query = !!(info[0] & BIT(0)); | |
717 | has_build_id_query = !!(info[0] & BIT(1)); | |
718 | } | |
719 | } | |
720 | ||
721 | if (has_package_id_query) | |
722 | prod_info_addr++; | |
723 | ||
724 | if (has_build_id_query) { | |
725 | ret = rmi_read_block(hdev, prod_info_addr, info, 3); | |
726 | if (ret) { | |
727 | hid_err(hdev, "Can not read product info.\n"); | |
728 | return ret; | |
729 | } | |
730 | ||
731 | data->firmware_id = info[1] << 8 | info[0]; | |
732 | data->firmware_id += info[2] * 65536; | |
733 | } | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
9fb6bf02 BT |
738 | static int rmi_populate_f11(struct hid_device *hdev) |
739 | { | |
740 | struct rmi_data *data = hid_get_drvdata(hdev); | |
741 | u8 buf[20]; | |
742 | int ret; | |
f15475c3 | 743 | bool has_query9; |
9e2c327e | 744 | bool has_query10 = false; |
f15475c3 | 745 | bool has_query11; |
9fb6bf02 | 746 | bool has_query12; |
8414947a AD |
747 | bool has_query27; |
748 | bool has_query28; | |
749 | bool has_query36 = false; | |
9fb6bf02 | 750 | bool has_physical_props; |
9e2c327e AD |
751 | bool has_gestures; |
752 | bool has_rel; | |
8414947a | 753 | bool has_data40 = false; |
05ba999f | 754 | bool has_dribble = false; |
f097deef | 755 | bool has_palm_detect = false; |
9fb6bf02 | 756 | unsigned x_size, y_size; |
8414947a | 757 | u16 query_offset; |
9fb6bf02 BT |
758 | |
759 | if (!data->f11.query_base_addr) { | |
760 | hid_err(hdev, "No 2D sensor found, giving up.\n"); | |
761 | return -ENODEV; | |
762 | } | |
763 | ||
764 | /* query 0 contains some useful information */ | |
765 | ret = rmi_read(hdev, data->f11.query_base_addr, buf); | |
766 | if (ret) { | |
767 | hid_err(hdev, "can not get query 0: %d.\n", ret); | |
768 | return ret; | |
769 | } | |
f15475c3 AD |
770 | has_query9 = !!(buf[0] & BIT(3)); |
771 | has_query11 = !!(buf[0] & BIT(4)); | |
9fb6bf02 | 772 | has_query12 = !!(buf[0] & BIT(5)); |
8414947a AD |
773 | has_query27 = !!(buf[0] & BIT(6)); |
774 | has_query28 = !!(buf[0] & BIT(7)); | |
9fb6bf02 BT |
775 | |
776 | /* query 1 to get the max number of fingers */ | |
777 | ret = rmi_read(hdev, data->f11.query_base_addr + 1, buf); | |
778 | if (ret) { | |
779 | hid_err(hdev, "can not get NumberOfFingers: %d.\n", ret); | |
780 | return ret; | |
781 | } | |
782 | data->max_fingers = (buf[0] & 0x07) + 1; | |
783 | if (data->max_fingers > 5) | |
784 | data->max_fingers = 10; | |
785 | ||
786 | data->f11.report_size = data->max_fingers * 5 + | |
787 | DIV_ROUND_UP(data->max_fingers, 4); | |
788 | ||
789 | if (!(buf[0] & BIT(4))) { | |
790 | hid_err(hdev, "No absolute events, giving up.\n"); | |
791 | return -ENODEV; | |
792 | } | |
793 | ||
9e2c327e AD |
794 | has_rel = !!(buf[0] & BIT(3)); |
795 | has_gestures = !!(buf[0] & BIT(5)); | |
796 | ||
05ba999f AD |
797 | ret = rmi_read(hdev, data->f11.query_base_addr + 5, buf); |
798 | if (ret) { | |
799 | hid_err(hdev, "can not get absolute data sources: %d.\n", ret); | |
800 | return ret; | |
801 | } | |
802 | ||
803 | has_dribble = !!(buf[0] & BIT(4)); | |
804 | ||
9fb6bf02 | 805 | /* |
9e2c327e AD |
806 | * At least 4 queries are guaranteed to be present in F11 |
807 | * +1 for query 5 which is present since absolute events are | |
808 | * reported and +1 for query 12. | |
9fb6bf02 | 809 | */ |
8414947a | 810 | query_offset = 6; |
9e2c327e AD |
811 | |
812 | if (has_rel) | |
8414947a | 813 | ++query_offset; /* query 6 is present */ |
9e2c327e | 814 | |
cabd9b5f AD |
815 | if (has_gestures) { |
816 | /* query 8 to find out if query 10 exists */ | |
817 | ret = rmi_read(hdev, | |
818 | data->f11.query_base_addr + query_offset + 1, buf); | |
819 | if (ret) { | |
820 | hid_err(hdev, "can not read gesture information: %d.\n", | |
821 | ret); | |
822 | return ret; | |
823 | } | |
f097deef | 824 | has_palm_detect = !!(buf[0] & BIT(0)); |
cabd9b5f AD |
825 | has_query10 = !!(buf[0] & BIT(2)); |
826 | ||
8414947a | 827 | query_offset += 2; /* query 7 and 8 are present */ |
cabd9b5f | 828 | } |
f15475c3 AD |
829 | |
830 | if (has_query9) | |
8414947a | 831 | ++query_offset; |
f15475c3 AD |
832 | |
833 | if (has_query10) | |
8414947a | 834 | ++query_offset; |
f15475c3 AD |
835 | |
836 | if (has_query11) | |
8414947a | 837 | ++query_offset; |
f15475c3 AD |
838 | |
839 | /* query 12 to know if the physical properties are reported */ | |
9fb6bf02 | 840 | if (has_query12) { |
f15475c3 | 841 | ret = rmi_read(hdev, data->f11.query_base_addr |
8414947a | 842 | + query_offset, buf); |
9fb6bf02 BT |
843 | if (ret) { |
844 | hid_err(hdev, "can not get query 12: %d.\n", ret); | |
845 | return ret; | |
846 | } | |
847 | has_physical_props = !!(buf[0] & BIT(5)); | |
848 | ||
849 | if (has_physical_props) { | |
8414947a | 850 | query_offset += 1; |
9fb6bf02 | 851 | ret = rmi_read_block(hdev, |
f15475c3 | 852 | data->f11.query_base_addr |
8414947a | 853 | + query_offset, buf, 4); |
9fb6bf02 BT |
854 | if (ret) { |
855 | hid_err(hdev, "can not read query 15-18: %d.\n", | |
856 | ret); | |
857 | return ret; | |
858 | } | |
859 | ||
860 | x_size = buf[0] | (buf[1] << 8); | |
861 | y_size = buf[2] | (buf[3] << 8); | |
862 | ||
863 | data->x_size_mm = DIV_ROUND_CLOSEST(x_size, 10); | |
864 | data->y_size_mm = DIV_ROUND_CLOSEST(y_size, 10); | |
865 | ||
866 | hid_info(hdev, "%s: size in mm: %d x %d\n", | |
867 | __func__, data->x_size_mm, data->y_size_mm); | |
8414947a AD |
868 | |
869 | /* | |
870 | * query 15 - 18 contain the size of the sensor | |
871 | * and query 19 - 26 contain bezel dimensions | |
872 | */ | |
873 | query_offset += 12; | |
874 | } | |
875 | } | |
876 | ||
877 | if (has_query27) | |
878 | ++query_offset; | |
879 | ||
880 | if (has_query28) { | |
881 | ret = rmi_read(hdev, data->f11.query_base_addr | |
882 | + query_offset, buf); | |
883 | if (ret) { | |
884 | hid_err(hdev, "can not get query 28: %d.\n", ret); | |
885 | return ret; | |
886 | } | |
887 | ||
888 | has_query36 = !!(buf[0] & BIT(6)); | |
889 | } | |
890 | ||
891 | if (has_query36) { | |
892 | query_offset += 2; | |
893 | ret = rmi_read(hdev, data->f11.query_base_addr | |
894 | + query_offset, buf); | |
895 | if (ret) { | |
896 | hid_err(hdev, "can not get query 36: %d.\n", ret); | |
897 | return ret; | |
9fb6bf02 | 898 | } |
8414947a AD |
899 | |
900 | has_data40 = !!(buf[0] & BIT(5)); | |
9fb6bf02 BT |
901 | } |
902 | ||
8414947a AD |
903 | |
904 | if (has_data40) | |
905 | data->f11.report_size += data->max_fingers * 2; | |
906 | ||
dcce5837 BT |
907 | /* |
908 | * retrieve the ctrl registers | |
909 | * the ctrl register has a size of 20 but a fw bug split it into 16 + 4, | |
910 | * and there is no way to know if the first 20 bytes are here or not. | |
f097deef | 911 | * We use only the first 12 bytes, so get only them. |
dcce5837 | 912 | */ |
f097deef | 913 | ret = rmi_read_block(hdev, data->f11.control_base_addr, buf, 12); |
9fb6bf02 | 914 | if (ret) { |
f097deef | 915 | hid_err(hdev, "can not read ctrl block of size 11: %d.\n", ret); |
9fb6bf02 BT |
916 | return ret; |
917 | } | |
918 | ||
919 | data->max_x = buf[6] | (buf[7] << 8); | |
920 | data->max_y = buf[8] | (buf[9] << 8); | |
921 | ||
05ba999f AD |
922 | if (has_dribble) { |
923 | buf[0] = buf[0] & ~BIT(6); | |
924 | ret = rmi_write(hdev, data->f11.control_base_addr, buf); | |
925 | if (ret) { | |
926 | hid_err(hdev, "can not write to control reg 0: %d.\n", | |
927 | ret); | |
928 | return ret; | |
929 | } | |
930 | } | |
931 | ||
f097deef AD |
932 | if (has_palm_detect) { |
933 | buf[11] = buf[11] & ~BIT(0); | |
934 | ret = rmi_write(hdev, data->f11.control_base_addr + 11, | |
935 | &buf[11]); | |
936 | if (ret) { | |
937 | hid_err(hdev, "can not write to control reg 11: %d.\n", | |
938 | ret); | |
939 | return ret; | |
940 | } | |
941 | } | |
942 | ||
9fb6bf02 BT |
943 | return 0; |
944 | } | |
945 | ||
946 | static int rmi_populate_f30(struct hid_device *hdev) | |
947 | { | |
948 | struct rmi_data *data = hid_get_drvdata(hdev); | |
949 | u8 buf[20]; | |
950 | int ret; | |
951 | bool has_gpio, has_led; | |
952 | unsigned bytes_per_ctrl; | |
953 | u8 ctrl2_addr; | |
954 | int ctrl2_3_length; | |
955 | int i; | |
956 | ||
957 | /* function F30 is for physical buttons */ | |
958 | if (!data->f30.query_base_addr) { | |
959 | hid_err(hdev, "No GPIO/LEDs found, giving up.\n"); | |
960 | return -ENODEV; | |
961 | } | |
962 | ||
963 | ret = rmi_read_block(hdev, data->f30.query_base_addr, buf, 2); | |
964 | if (ret) { | |
965 | hid_err(hdev, "can not get F30 query registers: %d.\n", ret); | |
966 | return ret; | |
967 | } | |
968 | ||
969 | has_gpio = !!(buf[0] & BIT(3)); | |
970 | has_led = !!(buf[0] & BIT(2)); | |
971 | data->gpio_led_count = buf[1] & 0x1f; | |
972 | ||
973 | /* retrieve ctrl 2 & 3 registers */ | |
974 | bytes_per_ctrl = (data->gpio_led_count + 7) / 8; | |
975 | /* Ctrl0 is present only if both has_gpio and has_led are set*/ | |
976 | ctrl2_addr = (has_gpio && has_led) ? bytes_per_ctrl : 0; | |
977 | /* Ctrl1 is always be present */ | |
978 | ctrl2_addr += bytes_per_ctrl; | |
979 | ctrl2_3_length = 2 * bytes_per_ctrl; | |
980 | ||
981 | data->f30.report_size = bytes_per_ctrl; | |
982 | ||
983 | ret = rmi_read_block(hdev, data->f30.control_base_addr + ctrl2_addr, | |
984 | buf, ctrl2_3_length); | |
985 | if (ret) { | |
986 | hid_err(hdev, "can not read ctrl 2&3 block of size %d: %d.\n", | |
987 | ctrl2_3_length, ret); | |
988 | return ret; | |
989 | } | |
990 | ||
991 | for (i = 0; i < data->gpio_led_count; i++) { | |
992 | int byte_position = i >> 3; | |
993 | int bit_position = i & 0x07; | |
994 | u8 dir_byte = buf[byte_position]; | |
995 | u8 data_byte = buf[byte_position + bytes_per_ctrl]; | |
996 | bool dir = (dir_byte >> bit_position) & BIT(0); | |
997 | bool dat = (data_byte >> bit_position) & BIT(0); | |
998 | ||
999 | if (dir == 0) { | |
1000 | /* input mode */ | |
1001 | if (dat) { | |
1002 | /* actual buttons have pull up resistor */ | |
1003 | data->button_count++; | |
1004 | set_bit(i, &data->button_mask); | |
1005 | set_bit(i, &data->button_state_mask); | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | } | |
1010 | ||
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | static int rmi_populate(struct hid_device *hdev) | |
1015 | { | |
10e87dc4 | 1016 | struct rmi_data *data = hid_get_drvdata(hdev); |
9fb6bf02 BT |
1017 | int ret; |
1018 | ||
1019 | ret = rmi_scan_pdt(hdev); | |
1020 | if (ret) { | |
1021 | hid_err(hdev, "PDT scan failed with code %d.\n", ret); | |
1022 | return ret; | |
1023 | } | |
1024 | ||
70e003f7 AD |
1025 | ret = rmi_populate_f01(hdev); |
1026 | if (ret) { | |
1027 | hid_err(hdev, "Error while initializing F01 (%d).\n", ret); | |
1028 | return ret; | |
1029 | } | |
1030 | ||
9fb6bf02 BT |
1031 | ret = rmi_populate_f11(hdev); |
1032 | if (ret) { | |
1033 | hid_err(hdev, "Error while initializing F11 (%d).\n", ret); | |
1034 | return ret; | |
1035 | } | |
1036 | ||
10e87dc4 AD |
1037 | if (!(data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)) { |
1038 | ret = rmi_populate_f30(hdev); | |
1039 | if (ret) | |
1040 | hid_warn(hdev, "Error while initializing F30 (%d).\n", ret); | |
1041 | } | |
9fb6bf02 BT |
1042 | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | static void rmi_input_configured(struct hid_device *hdev, struct hid_input *hi) | |
1047 | { | |
1048 | struct rmi_data *data = hid_get_drvdata(hdev); | |
1049 | struct input_dev *input = hi->input; | |
1050 | int ret; | |
1051 | int res_x, res_y, i; | |
1052 | ||
1053 | data->input = input; | |
1054 | ||
1055 | hid_dbg(hdev, "Opening low level driver\n"); | |
1056 | ret = hid_hw_open(hdev); | |
1057 | if (ret) | |
1058 | return; | |
1059 | ||
2f43de60 AD |
1060 | if (!(data->device_flags & RMI_DEVICE)) |
1061 | return; | |
1062 | ||
9fb6bf02 BT |
1063 | /* Allow incoming hid reports */ |
1064 | hid_device_io_start(hdev); | |
1065 | ||
1066 | ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
1067 | if (ret < 0) { | |
1068 | dev_err(&hdev->dev, "failed to set rmi mode\n"); | |
1069 | goto exit; | |
1070 | } | |
1071 | ||
1072 | ret = rmi_set_page(hdev, 0); | |
1073 | if (ret < 0) { | |
1074 | dev_err(&hdev->dev, "failed to set page select to 0.\n"); | |
1075 | goto exit; | |
1076 | } | |
1077 | ||
1078 | ret = rmi_populate(hdev); | |
1079 | if (ret) | |
1080 | goto exit; | |
1081 | ||
70e003f7 AD |
1082 | hid_info(hdev, "firmware id: %ld\n", data->firmware_id); |
1083 | ||
9fb6bf02 BT |
1084 | __set_bit(EV_ABS, input->evbit); |
1085 | input_set_abs_params(input, ABS_MT_POSITION_X, 1, data->max_x, 0, 0); | |
1086 | input_set_abs_params(input, ABS_MT_POSITION_Y, 1, data->max_y, 0, 0); | |
1087 | ||
b668fdce | 1088 | if (data->x_size_mm && data->y_size_mm) { |
9fb6bf02 | 1089 | res_x = (data->max_x - 1) / data->x_size_mm; |
b668fdce | 1090 | res_y = (data->max_y - 1) / data->y_size_mm; |
9fb6bf02 BT |
1091 | |
1092 | input_abs_set_res(input, ABS_MT_POSITION_X, res_x); | |
1093 | input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); | |
1094 | } | |
1095 | ||
1096 | input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
1097 | input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0); | |
1098 | input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0); | |
1099 | input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0); | |
1100 | ||
1101 | input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); | |
1102 | ||
1103 | if (data->button_count) { | |
1104 | __set_bit(EV_KEY, input->evbit); | |
1105 | for (i = 0; i < data->button_count; i++) | |
1106 | __set_bit(BTN_LEFT + i, input->keybit); | |
1107 | ||
1108 | if (data->button_count == 1) | |
1109 | __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); | |
1110 | } | |
1111 | ||
1112 | set_bit(RMI_STARTED, &data->flags); | |
1113 | ||
1114 | exit: | |
1115 | hid_device_io_stop(hdev); | |
1116 | hid_hw_close(hdev); | |
1117 | } | |
1118 | ||
1119 | static int rmi_input_mapping(struct hid_device *hdev, | |
1120 | struct hid_input *hi, struct hid_field *field, | |
1121 | struct hid_usage *usage, unsigned long **bit, int *max) | |
1122 | { | |
2f43de60 AD |
1123 | struct rmi_data *data = hid_get_drvdata(hdev); |
1124 | ||
1125 | /* | |
1126 | * we want to make HID ignore the advertised HID collection | |
1127 | * for RMI deivces | |
1128 | */ | |
79364d87 AD |
1129 | if (data->device_flags & RMI_DEVICE) { |
1130 | if ((data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) && | |
1131 | ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)) | |
1132 | return 0; | |
1133 | ||
2f43de60 | 1134 | return -1; |
79364d87 | 1135 | } |
2f43de60 AD |
1136 | |
1137 | return 0; | |
1138 | } | |
1139 | ||
1140 | static int rmi_check_valid_report_id(struct hid_device *hdev, unsigned type, | |
1141 | unsigned id, struct hid_report **report) | |
1142 | { | |
1143 | int i; | |
1144 | ||
1145 | *report = hdev->report_enum[type].report_id_hash[id]; | |
1146 | if (*report) { | |
1147 | for (i = 0; i < (*report)->maxfield; i++) { | |
1148 | unsigned app = (*report)->field[i]->application; | |
1149 | if ((app & HID_USAGE_PAGE) >= HID_UP_MSVENDOR) | |
1150 | return 1; | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | return 0; | |
9fb6bf02 BT |
1155 | } |
1156 | ||
1157 | static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
1158 | { | |
1159 | struct rmi_data *data = NULL; | |
1160 | int ret; | |
1161 | size_t alloc_size; | |
dd3edeb6 AD |
1162 | struct hid_report *input_report; |
1163 | struct hid_report *output_report; | |
2f43de60 | 1164 | struct hid_report *feature_report; |
9fb6bf02 BT |
1165 | |
1166 | data = devm_kzalloc(&hdev->dev, sizeof(struct rmi_data), GFP_KERNEL); | |
1167 | if (!data) | |
1168 | return -ENOMEM; | |
1169 | ||
1170 | INIT_WORK(&data->reset_work, rmi_reset_work); | |
1171 | data->hdev = hdev; | |
1172 | ||
1173 | hid_set_drvdata(hdev, data); | |
1174 | ||
1175 | hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; | |
1176 | ||
1177 | ret = hid_parse(hdev); | |
1178 | if (ret) { | |
1179 | hid_err(hdev, "parse failed\n"); | |
1180 | return ret; | |
1181 | } | |
1182 | ||
79364d87 AD |
1183 | if (id->driver_data) |
1184 | data->device_flags = id->driver_data; | |
1185 | ||
2f43de60 AD |
1186 | /* |
1187 | * Check for the RMI specific report ids. If they are misisng | |
1188 | * simply return and let the events be processed by hid-input | |
1189 | */ | |
1190 | if (!rmi_check_valid_report_id(hdev, HID_FEATURE_REPORT, | |
1191 | RMI_SET_RMI_MODE_REPORT_ID, &feature_report)) { | |
1192 | hid_dbg(hdev, "device does not have set mode feature report\n"); | |
1193 | goto start; | |
1194 | } | |
1195 | ||
1196 | if (!rmi_check_valid_report_id(hdev, HID_INPUT_REPORT, | |
1197 | RMI_ATTN_REPORT_ID, &input_report)) { | |
1198 | hid_dbg(hdev, "device does not have attention input report\n"); | |
1199 | goto start; | |
dd3edeb6 AD |
1200 | } |
1201 | ||
b8aed6ea | 1202 | data->input_report_size = hid_report_len(input_report); |
dd3edeb6 | 1203 | |
2f43de60 AD |
1204 | if (!rmi_check_valid_report_id(hdev, HID_OUTPUT_REPORT, |
1205 | RMI_WRITE_REPORT_ID, &output_report)) { | |
1206 | hid_dbg(hdev, | |
1207 | "device does not have rmi write output report\n"); | |
1208 | goto start; | |
dd3edeb6 AD |
1209 | } |
1210 | ||
b8aed6ea | 1211 | data->output_report_size = hid_report_len(output_report); |
9fb6bf02 | 1212 | |
2f43de60 | 1213 | data->device_flags |= RMI_DEVICE; |
9fb6bf02 BT |
1214 | alloc_size = data->output_report_size + data->input_report_size; |
1215 | ||
1216 | data->writeReport = devm_kzalloc(&hdev->dev, alloc_size, GFP_KERNEL); | |
1217 | if (!data->writeReport) { | |
1218 | ret = -ENOMEM; | |
1219 | return ret; | |
1220 | } | |
1221 | ||
1222 | data->readReport = data->writeReport + data->output_report_size; | |
1223 | ||
1224 | init_waitqueue_head(&data->wait); | |
1225 | ||
1226 | mutex_init(&data->page_mutex); | |
1227 | ||
2f43de60 | 1228 | start: |
9fb6bf02 BT |
1229 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
1230 | if (ret) { | |
1231 | hid_err(hdev, "hw start failed\n"); | |
1232 | return ret; | |
1233 | } | |
1234 | ||
2f43de60 AD |
1235 | if ((data->device_flags & RMI_DEVICE) && |
1236 | !test_bit(RMI_STARTED, &data->flags)) | |
daebdd7e AD |
1237 | /* |
1238 | * The device maybe in the bootloader if rmi_input_configured | |
1239 | * failed to find F11 in the PDT. Print an error, but don't | |
1240 | * return an error from rmi_probe so that hidraw will be | |
1241 | * accessible from userspace. That way a userspace tool | |
1242 | * can be used to reload working firmware on the touchpad. | |
1243 | */ | |
1244 | hid_err(hdev, "Device failed to be properly configured\n"); | |
9fb6bf02 | 1245 | |
9fb6bf02 BT |
1246 | return 0; |
1247 | } | |
1248 | ||
1249 | static void rmi_remove(struct hid_device *hdev) | |
1250 | { | |
1251 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
1252 | ||
1253 | clear_bit(RMI_STARTED, &hdata->flags); | |
1254 | ||
1255 | hid_hw_stop(hdev); | |
1256 | } | |
1257 | ||
1258 | static const struct hid_device_id rmi_id[] = { | |
e9287099 AD |
1259 | { HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14), |
1260 | .driver_data = RMI_DEVICE_HAS_PHYS_BUTTONS }, | |
ba391e5a | 1261 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_RMI, HID_ANY_ID, HID_ANY_ID) }, |
9fb6bf02 BT |
1262 | { } |
1263 | }; | |
1264 | MODULE_DEVICE_TABLE(hid, rmi_id); | |
1265 | ||
1266 | static struct hid_driver rmi_driver = { | |
1267 | .name = "hid-rmi", | |
1268 | .id_table = rmi_id, | |
1269 | .probe = rmi_probe, | |
1270 | .remove = rmi_remove, | |
2f43de60 | 1271 | .event = rmi_event, |
9fb6bf02 BT |
1272 | .raw_event = rmi_raw_event, |
1273 | .input_mapping = rmi_input_mapping, | |
1274 | .input_configured = rmi_input_configured, | |
1275 | #ifdef CONFIG_PM | |
1276 | .resume = rmi_post_resume, | |
1277 | .reset_resume = rmi_post_reset, | |
1278 | #endif | |
1279 | }; | |
1280 | ||
1281 | module_hid_driver(rmi_driver); | |
1282 | ||
1283 | MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>"); | |
1284 | MODULE_DESCRIPTION("RMI HID driver"); | |
1285 | MODULE_LICENSE("GPL"); |