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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 | |
09256360 AD |
36 | #define RMI_SLEEP_NORMAL 0x0 |
37 | #define RMI_SLEEP_DEEP_SLEEP 0x1 | |
38 | ||
2f43de60 AD |
39 | /* device flags */ |
40 | #define RMI_DEVICE BIT(0) | |
79364d87 | 41 | #define RMI_DEVICE_HAS_PHYS_BUTTONS BIT(1) |
2f43de60 | 42 | |
7035f3a4 AD |
43 | /* |
44 | * retrieve the ctrl registers | |
45 | * the ctrl register has a size of 20 but a fw bug split it into 16 + 4, | |
46 | * and there is no way to know if the first 20 bytes are here or not. | |
47 | * We use only the first 12 bytes, so get only them. | |
48 | */ | |
49 | #define RMI_F11_CTRL_REG_COUNT 12 | |
50 | ||
9fb6bf02 BT |
51 | enum rmi_mode_type { |
52 | RMI_MODE_OFF = 0, | |
53 | RMI_MODE_ATTN_REPORTS = 1, | |
54 | RMI_MODE_NO_PACKED_ATTN_REPORTS = 2, | |
55 | }; | |
56 | ||
57 | struct rmi_function { | |
58 | unsigned page; /* page of the function */ | |
59 | u16 query_base_addr; /* base address for queries */ | |
60 | u16 command_base_addr; /* base address for commands */ | |
61 | u16 control_base_addr; /* base address for controls */ | |
62 | u16 data_base_addr; /* base address for datas */ | |
63 | unsigned int interrupt_base; /* cross-function interrupt number | |
64 | * (uniq in the device)*/ | |
65 | unsigned int interrupt_count; /* number of interrupts */ | |
66 | unsigned int report_size; /* size of a report */ | |
67 | unsigned long irq_mask; /* mask of the interrupts | |
68 | * (to be applied against ATTN IRQ) */ | |
69 | }; | |
70 | ||
71 | /** | |
72 | * struct rmi_data - stores information for hid communication | |
73 | * | |
74 | * @page_mutex: Locks current page to avoid changing pages in unexpected ways. | |
75 | * @page: Keeps track of the current virtual page | |
76 | * | |
77 | * @wait: Used for waiting for read data | |
78 | * | |
79 | * @writeReport: output buffer when writing RMI registers | |
80 | * @readReport: input buffer when reading RMI registers | |
81 | * | |
82 | * @input_report_size: size of an input report (advertised by HID) | |
83 | * @output_report_size: size of an output report (advertised by HID) | |
84 | * | |
85 | * @flags: flags for the current device (started, reading, etc...) | |
86 | * | |
87 | * @f11: placeholder of internal RMI function F11 description | |
88 | * @f30: placeholder of internal RMI function F30 description | |
89 | * | |
90 | * @max_fingers: maximum finger count reported by the device | |
91 | * @max_x: maximum x value reported by the device | |
92 | * @max_y: maximum y value reported by the device | |
93 | * | |
94 | * @gpio_led_count: count of GPIOs + LEDs reported by F30 | |
95 | * @button_count: actual physical buttons count | |
96 | * @button_mask: button mask used to decode GPIO ATTN reports | |
97 | * @button_state_mask: pull state of the buttons | |
98 | * | |
99 | * @input: pointer to the kernel input device | |
100 | * | |
101 | * @reset_work: worker which will be called in case of a mouse report | |
102 | * @hdev: pointer to the struct hid_device | |
103 | */ | |
104 | struct rmi_data { | |
105 | struct mutex page_mutex; | |
106 | int page; | |
107 | ||
108 | wait_queue_head_t wait; | |
109 | ||
110 | u8 *writeReport; | |
111 | u8 *readReport; | |
112 | ||
113 | int input_report_size; | |
114 | int output_report_size; | |
115 | ||
116 | unsigned long flags; | |
117 | ||
70e003f7 | 118 | struct rmi_function f01; |
9fb6bf02 BT |
119 | struct rmi_function f11; |
120 | struct rmi_function f30; | |
121 | ||
122 | unsigned int max_fingers; | |
123 | unsigned int max_x; | |
124 | unsigned int max_y; | |
125 | unsigned int x_size_mm; | |
126 | unsigned int y_size_mm; | |
7035f3a4 AD |
127 | bool read_f11_ctrl_regs; |
128 | u8 f11_ctrl_regs[RMI_F11_CTRL_REG_COUNT]; | |
9fb6bf02 BT |
129 | |
130 | unsigned int gpio_led_count; | |
131 | unsigned int button_count; | |
132 | unsigned long button_mask; | |
133 | unsigned long button_state_mask; | |
134 | ||
135 | struct input_dev *input; | |
136 | ||
137 | struct work_struct reset_work; | |
138 | struct hid_device *hdev; | |
2f43de60 AD |
139 | |
140 | unsigned long device_flags; | |
70e003f7 | 141 | unsigned long firmware_id; |
09256360 AD |
142 | |
143 | u8 f01_ctrl0; | |
9a98b338 AD |
144 | u8 interrupt_enable_mask; |
145 | bool restore_interrupt_mask; | |
9fb6bf02 BT |
146 | }; |
147 | ||
148 | #define RMI_PAGE(addr) (((addr) >> 8) & 0xff) | |
149 | ||
150 | static int rmi_write_report(struct hid_device *hdev, u8 *report, int len); | |
151 | ||
152 | /** | |
153 | * rmi_set_page - Set RMI page | |
154 | * @hdev: The pointer to the hid_device struct | |
155 | * @page: The new page address. | |
156 | * | |
157 | * RMI devices have 16-bit addressing, but some of the physical | |
158 | * implementations (like SMBus) only have 8-bit addressing. So RMI implements | |
159 | * a page address at 0xff of every page so we can reliable page addresses | |
160 | * every 256 registers. | |
161 | * | |
162 | * The page_mutex lock must be held when this function is entered. | |
163 | * | |
164 | * Returns zero on success, non-zero on failure. | |
165 | */ | |
166 | static int rmi_set_page(struct hid_device *hdev, u8 page) | |
167 | { | |
168 | struct rmi_data *data = hid_get_drvdata(hdev); | |
169 | int retval; | |
170 | ||
171 | data->writeReport[0] = RMI_WRITE_REPORT_ID; | |
172 | data->writeReport[1] = 1; | |
173 | data->writeReport[2] = 0xFF; | |
174 | data->writeReport[4] = page; | |
175 | ||
176 | retval = rmi_write_report(hdev, data->writeReport, | |
177 | data->output_report_size); | |
178 | if (retval != data->output_report_size) { | |
179 | dev_err(&hdev->dev, | |
180 | "%s: set page failed: %d.", __func__, retval); | |
181 | return retval; | |
182 | } | |
183 | ||
184 | data->page = page; | |
185 | return 0; | |
186 | } | |
187 | ||
188 | static int rmi_set_mode(struct hid_device *hdev, u8 mode) | |
189 | { | |
190 | int ret; | |
191 | u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode}; | |
192 | ||
193 | ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, txbuf, | |
194 | sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
195 | if (ret < 0) { | |
196 | dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode, | |
197 | ret); | |
198 | return ret; | |
199 | } | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int rmi_write_report(struct hid_device *hdev, u8 *report, int len) | |
205 | { | |
206 | int ret; | |
207 | ||
208 | ret = hid_hw_output_report(hdev, (void *)report, len); | |
209 | if (ret < 0) { | |
210 | dev_err(&hdev->dev, "failed to write hid report (%d)\n", ret); | |
211 | return ret; | |
212 | } | |
213 | ||
214 | return ret; | |
215 | } | |
216 | ||
217 | static int rmi_read_block(struct hid_device *hdev, u16 addr, void *buf, | |
218 | const int len) | |
219 | { | |
220 | struct rmi_data *data = hid_get_drvdata(hdev); | |
221 | int ret; | |
222 | int bytes_read; | |
223 | int bytes_needed; | |
224 | int retries; | |
225 | int read_input_count; | |
226 | ||
227 | mutex_lock(&data->page_mutex); | |
228 | ||
229 | if (RMI_PAGE(addr) != data->page) { | |
230 | ret = rmi_set_page(hdev, RMI_PAGE(addr)); | |
231 | if (ret < 0) | |
232 | goto exit; | |
233 | } | |
234 | ||
235 | for (retries = 5; retries > 0; retries--) { | |
236 | data->writeReport[0] = RMI_READ_ADDR_REPORT_ID; | |
237 | data->writeReport[1] = 0; /* old 1 byte read count */ | |
238 | data->writeReport[2] = addr & 0xFF; | |
239 | data->writeReport[3] = (addr >> 8) & 0xFF; | |
240 | data->writeReport[4] = len & 0xFF; | |
241 | data->writeReport[5] = (len >> 8) & 0xFF; | |
242 | ||
243 | set_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
244 | ||
245 | ret = rmi_write_report(hdev, data->writeReport, | |
246 | data->output_report_size); | |
247 | if (ret != data->output_report_size) { | |
248 | clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
249 | dev_err(&hdev->dev, | |
250 | "failed to write request output report (%d)\n", | |
251 | ret); | |
252 | goto exit; | |
253 | } | |
254 | ||
255 | bytes_read = 0; | |
256 | bytes_needed = len; | |
257 | while (bytes_read < len) { | |
258 | if (!wait_event_timeout(data->wait, | |
259 | test_bit(RMI_READ_DATA_PENDING, &data->flags), | |
260 | msecs_to_jiffies(1000))) { | |
261 | hid_warn(hdev, "%s: timeout elapsed\n", | |
262 | __func__); | |
263 | ret = -EAGAIN; | |
264 | break; | |
265 | } | |
266 | ||
267 | read_input_count = data->readReport[1]; | |
268 | memcpy(buf + bytes_read, &data->readReport[2], | |
269 | read_input_count < bytes_needed ? | |
270 | read_input_count : bytes_needed); | |
271 | ||
272 | bytes_read += read_input_count; | |
273 | bytes_needed -= read_input_count; | |
274 | clear_bit(RMI_READ_DATA_PENDING, &data->flags); | |
275 | } | |
276 | ||
277 | if (ret >= 0) { | |
278 | ret = 0; | |
279 | break; | |
280 | } | |
281 | } | |
282 | ||
283 | exit: | |
284 | clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
285 | mutex_unlock(&data->page_mutex); | |
286 | return ret; | |
287 | } | |
288 | ||
289 | static inline int rmi_read(struct hid_device *hdev, u16 addr, void *buf) | |
290 | { | |
291 | return rmi_read_block(hdev, addr, buf, 1); | |
292 | } | |
293 | ||
dd8df284 AD |
294 | static int rmi_write_block(struct hid_device *hdev, u16 addr, void *buf, |
295 | const int len) | |
296 | { | |
297 | struct rmi_data *data = hid_get_drvdata(hdev); | |
298 | int ret; | |
299 | ||
300 | mutex_lock(&data->page_mutex); | |
301 | ||
302 | if (RMI_PAGE(addr) != data->page) { | |
303 | ret = rmi_set_page(hdev, RMI_PAGE(addr)); | |
304 | if (ret < 0) | |
305 | goto exit; | |
306 | } | |
307 | ||
308 | data->writeReport[0] = RMI_WRITE_REPORT_ID; | |
309 | data->writeReport[1] = len; | |
310 | data->writeReport[2] = addr & 0xFF; | |
311 | data->writeReport[3] = (addr >> 8) & 0xFF; | |
312 | memcpy(&data->writeReport[4], buf, len); | |
313 | ||
314 | ret = rmi_write_report(hdev, data->writeReport, | |
315 | data->output_report_size); | |
316 | if (ret < 0) { | |
317 | dev_err(&hdev->dev, | |
318 | "failed to write request output report (%d)\n", | |
319 | ret); | |
320 | goto exit; | |
321 | } | |
322 | ret = 0; | |
323 | ||
324 | exit: | |
325 | mutex_unlock(&data->page_mutex); | |
326 | return ret; | |
327 | } | |
328 | ||
329 | static inline int rmi_write(struct hid_device *hdev, u16 addr, void *buf) | |
330 | { | |
331 | return rmi_write_block(hdev, addr, buf, 1); | |
332 | } | |
333 | ||
9fb6bf02 BT |
334 | static void rmi_f11_process_touch(struct rmi_data *hdata, int slot, |
335 | u8 finger_state, u8 *touch_data) | |
336 | { | |
337 | int x, y, wx, wy; | |
338 | int wide, major, minor; | |
339 | int z; | |
340 | ||
341 | input_mt_slot(hdata->input, slot); | |
342 | input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, | |
343 | finger_state == 0x01); | |
344 | if (finger_state == 0x01) { | |
876e7a8a | 345 | x = (touch_data[0] << 4) | (touch_data[2] & 0x0F); |
9fb6bf02 | 346 | y = (touch_data[1] << 4) | (touch_data[2] >> 4); |
876e7a8a | 347 | wx = touch_data[3] & 0x0F; |
9fb6bf02 BT |
348 | wy = touch_data[3] >> 4; |
349 | wide = (wx > wy); | |
350 | major = max(wx, wy); | |
351 | minor = min(wx, wy); | |
352 | z = touch_data[4]; | |
353 | ||
354 | /* y is inverted */ | |
355 | y = hdata->max_y - y; | |
356 | ||
357 | input_event(hdata->input, EV_ABS, ABS_MT_POSITION_X, x); | |
358 | input_event(hdata->input, EV_ABS, ABS_MT_POSITION_Y, y); | |
359 | input_event(hdata->input, EV_ABS, ABS_MT_ORIENTATION, wide); | |
360 | input_event(hdata->input, EV_ABS, ABS_MT_PRESSURE, z); | |
361 | input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); | |
362 | input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
363 | } | |
364 | } | |
365 | ||
9a98b338 AD |
366 | static int rmi_reset_attn_mode(struct hid_device *hdev) |
367 | { | |
368 | struct rmi_data *data = hid_get_drvdata(hdev); | |
369 | int ret; | |
370 | ||
371 | ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
372 | if (ret) | |
373 | return ret; | |
374 | ||
375 | if (data->restore_interrupt_mask) { | |
376 | ret = rmi_write(hdev, data->f01.control_base_addr + 1, | |
377 | &data->interrupt_enable_mask); | |
378 | if (ret) { | |
379 | hid_err(hdev, "can not write F01 control register\n"); | |
380 | return ret; | |
381 | } | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
9fb6bf02 BT |
387 | static void rmi_reset_work(struct work_struct *work) |
388 | { | |
389 | struct rmi_data *hdata = container_of(work, struct rmi_data, | |
390 | reset_work); | |
391 | ||
392 | /* switch the device to RMI if we receive a generic mouse report */ | |
9a98b338 | 393 | rmi_reset_attn_mode(hdata->hdev); |
9fb6bf02 BT |
394 | } |
395 | ||
396 | static inline int rmi_schedule_reset(struct hid_device *hdev) | |
397 | { | |
398 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
399 | return schedule_work(&hdata->reset_work); | |
400 | } | |
401 | ||
402 | static int rmi_f11_input_event(struct hid_device *hdev, u8 irq, u8 *data, | |
403 | int size) | |
404 | { | |
405 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
406 | int offset; | |
407 | int i; | |
408 | ||
5b65c2a0 | 409 | if (!(irq & hdata->f11.irq_mask) || size <= 0) |
9fb6bf02 BT |
410 | return 0; |
411 | ||
412 | offset = (hdata->max_fingers >> 2) + 1; | |
413 | for (i = 0; i < hdata->max_fingers; i++) { | |
414 | int fs_byte_position = i >> 2; | |
415 | int fs_bit_position = (i & 0x3) << 1; | |
416 | int finger_state = (data[fs_byte_position] >> fs_bit_position) & | |
417 | 0x03; | |
5b65c2a0 BT |
418 | int position = offset + 5 * i; |
419 | ||
420 | if (position + 5 > size) { | |
421 | /* partial report, go on with what we received */ | |
422 | printk_once(KERN_WARNING | |
423 | "%s %s: Detected incomplete finger report. Finger reports may occasionally get dropped on this platform.\n", | |
424 | dev_driver_string(&hdev->dev), | |
425 | dev_name(&hdev->dev)); | |
426 | hid_dbg(hdev, "Incomplete finger report\n"); | |
427 | break; | |
428 | } | |
9fb6bf02 | 429 | |
5b65c2a0 | 430 | rmi_f11_process_touch(hdata, i, finger_state, &data[position]); |
9fb6bf02 BT |
431 | } |
432 | input_mt_sync_frame(hdata->input); | |
433 | input_sync(hdata->input); | |
434 | return hdata->f11.report_size; | |
435 | } | |
436 | ||
437 | static int rmi_f30_input_event(struct hid_device *hdev, u8 irq, u8 *data, | |
438 | int size) | |
439 | { | |
440 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
441 | int i; | |
442 | int button = 0; | |
443 | bool value; | |
444 | ||
445 | if (!(irq & hdata->f30.irq_mask)) | |
446 | return 0; | |
447 | ||
5b65c2a0 BT |
448 | if (size < (int)hdata->f30.report_size) { |
449 | hid_warn(hdev, "Click Button pressed, but the click data is missing\n"); | |
450 | return 0; | |
451 | } | |
452 | ||
9fb6bf02 BT |
453 | for (i = 0; i < hdata->gpio_led_count; i++) { |
454 | if (test_bit(i, &hdata->button_mask)) { | |
455 | value = (data[i / 8] >> (i & 0x07)) & BIT(0); | |
456 | if (test_bit(i, &hdata->button_state_mask)) | |
457 | value = !value; | |
458 | input_event(hdata->input, EV_KEY, BTN_LEFT + button++, | |
459 | value); | |
460 | } | |
461 | } | |
462 | return hdata->f30.report_size; | |
463 | } | |
464 | ||
465 | static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) | |
466 | { | |
467 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
468 | unsigned long irq_mask = 0; | |
469 | unsigned index = 2; | |
470 | ||
471 | if (!(test_bit(RMI_STARTED, &hdata->flags))) | |
472 | return 0; | |
473 | ||
474 | irq_mask |= hdata->f11.irq_mask; | |
475 | irq_mask |= hdata->f30.irq_mask; | |
476 | ||
477 | if (data[1] & ~irq_mask) | |
01a5f8a4 | 478 | hid_dbg(hdev, "unknown intr source:%02lx %s:%d\n", |
9fb6bf02 BT |
479 | data[1] & ~irq_mask, __FILE__, __LINE__); |
480 | ||
481 | if (hdata->f11.interrupt_base < hdata->f30.interrupt_base) { | |
482 | index += rmi_f11_input_event(hdev, data[1], &data[index], | |
483 | size - index); | |
484 | index += rmi_f30_input_event(hdev, data[1], &data[index], | |
485 | size - index); | |
486 | } else { | |
487 | index += rmi_f30_input_event(hdev, data[1], &data[index], | |
488 | size - index); | |
489 | index += rmi_f11_input_event(hdev, data[1], &data[index], | |
490 | size - index); | |
491 | } | |
492 | ||
493 | return 1; | |
494 | } | |
495 | ||
496 | static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size) | |
497 | { | |
498 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
499 | ||
500 | if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) { | |
01a5f8a4 | 501 | hid_dbg(hdev, "no read request pending\n"); |
9fb6bf02 BT |
502 | return 0; |
503 | } | |
504 | ||
505 | memcpy(hdata->readReport, data, size < hdata->input_report_size ? | |
506 | size : hdata->input_report_size); | |
507 | set_bit(RMI_READ_DATA_PENDING, &hdata->flags); | |
508 | wake_up(&hdata->wait); | |
509 | ||
510 | return 1; | |
511 | } | |
512 | ||
5b65c2a0 BT |
513 | static int rmi_check_sanity(struct hid_device *hdev, u8 *data, int size) |
514 | { | |
515 | int valid_size = size; | |
516 | /* | |
517 | * On the Dell XPS 13 9333, the bus sometimes get confused and fills | |
518 | * the report with a sentinel value "ff". Synaptics told us that such | |
519 | * behavior does not comes from the touchpad itself, so we filter out | |
520 | * such reports here. | |
521 | */ | |
522 | ||
523 | while ((data[valid_size - 1] == 0xff) && valid_size > 0) | |
524 | valid_size--; | |
525 | ||
526 | return valid_size; | |
527 | } | |
528 | ||
9fb6bf02 BT |
529 | static int rmi_raw_event(struct hid_device *hdev, |
530 | struct hid_report *report, u8 *data, int size) | |
531 | { | |
5b65c2a0 BT |
532 | size = rmi_check_sanity(hdev, data, size); |
533 | if (size < 2) | |
534 | return 0; | |
535 | ||
9fb6bf02 BT |
536 | switch (data[0]) { |
537 | case RMI_READ_DATA_REPORT_ID: | |
538 | return rmi_read_data_event(hdev, data, size); | |
539 | case RMI_ATTN_REPORT_ID: | |
540 | return rmi_input_event(hdev, data, size); | |
2f43de60 AD |
541 | default: |
542 | return 1; | |
543 | } | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static int rmi_event(struct hid_device *hdev, struct hid_field *field, | |
549 | struct hid_usage *usage, __s32 value) | |
550 | { | |
551 | struct rmi_data *data = hid_get_drvdata(hdev); | |
552 | ||
553 | if ((data->device_flags & RMI_DEVICE) && | |
554 | (field->application == HID_GD_POINTER || | |
555 | field->application == HID_GD_MOUSE)) { | |
79364d87 AD |
556 | if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) { |
557 | if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) | |
558 | return 0; | |
559 | ||
560 | if ((usage->hid == HID_GD_X || usage->hid == HID_GD_Y) | |
561 | && !value) | |
562 | return 1; | |
563 | } | |
564 | ||
9fb6bf02 | 565 | rmi_schedule_reset(hdev); |
2f43de60 | 566 | return 1; |
9fb6bf02 BT |
567 | } |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
a278e268 | 572 | #ifdef CONFIG_PM |
09256360 AD |
573 | static int rmi_set_sleep_mode(struct hid_device *hdev, int sleep_mode) |
574 | { | |
575 | struct rmi_data *data = hid_get_drvdata(hdev); | |
576 | int ret; | |
577 | u8 f01_ctrl0; | |
578 | ||
579 | f01_ctrl0 = (data->f01_ctrl0 & ~0x3) | sleep_mode; | |
580 | ||
581 | ret = rmi_write(hdev, data->f01.control_base_addr, | |
582 | &f01_ctrl0); | |
583 | if (ret) { | |
584 | hid_err(hdev, "can not write sleep mode\n"); | |
585 | return ret; | |
586 | } | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | static int rmi_suspend(struct hid_device *hdev, pm_message_t message) | |
592 | { | |
7035f3a4 AD |
593 | struct rmi_data *data = hid_get_drvdata(hdev); |
594 | int ret; | |
595 | u8 buf[RMI_F11_CTRL_REG_COUNT]; | |
596 | ||
b786ae8e AD |
597 | if (!(data->device_flags & RMI_DEVICE)) |
598 | return 0; | |
599 | ||
7035f3a4 AD |
600 | ret = rmi_read_block(hdev, data->f11.control_base_addr, buf, |
601 | RMI_F11_CTRL_REG_COUNT); | |
602 | if (ret) | |
603 | hid_warn(hdev, "can not read F11 control registers\n"); | |
604 | else | |
605 | memcpy(data->f11_ctrl_regs, buf, RMI_F11_CTRL_REG_COUNT); | |
606 | ||
607 | ||
09256360 AD |
608 | if (!device_may_wakeup(hdev->dev.parent)) |
609 | return rmi_set_sleep_mode(hdev, RMI_SLEEP_DEEP_SLEEP); | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
9fb6bf02 BT |
614 | static int rmi_post_reset(struct hid_device *hdev) |
615 | { | |
7035f3a4 | 616 | struct rmi_data *data = hid_get_drvdata(hdev); |
09256360 AD |
617 | int ret; |
618 | ||
b786ae8e AD |
619 | if (!(data->device_flags & RMI_DEVICE)) |
620 | return 0; | |
621 | ||
9a98b338 | 622 | ret = rmi_reset_attn_mode(hdev); |
09256360 AD |
623 | if (ret) { |
624 | hid_err(hdev, "can not set rmi mode\n"); | |
625 | return ret; | |
626 | } | |
627 | ||
7035f3a4 AD |
628 | if (data->read_f11_ctrl_regs) { |
629 | ret = rmi_write_block(hdev, data->f11.control_base_addr, | |
630 | data->f11_ctrl_regs, RMI_F11_CTRL_REG_COUNT); | |
631 | if (ret) | |
632 | hid_warn(hdev, | |
633 | "can not write F11 control registers after reset\n"); | |
634 | } | |
635 | ||
09256360 AD |
636 | if (!device_may_wakeup(hdev->dev.parent)) { |
637 | ret = rmi_set_sleep_mode(hdev, RMI_SLEEP_NORMAL); | |
638 | if (ret) { | |
639 | hid_err(hdev, "can not write sleep mode\n"); | |
640 | return ret; | |
641 | } | |
642 | } | |
643 | ||
644 | return ret; | |
9fb6bf02 BT |
645 | } |
646 | ||
647 | static int rmi_post_resume(struct hid_device *hdev) | |
648 | { | |
b786ae8e AD |
649 | struct rmi_data *data = hid_get_drvdata(hdev); |
650 | ||
651 | if (!(data->device_flags & RMI_DEVICE)) | |
652 | return 0; | |
653 | ||
9a98b338 | 654 | return rmi_reset_attn_mode(hdev); |
9fb6bf02 | 655 | } |
a278e268 | 656 | #endif /* CONFIG_PM */ |
9fb6bf02 BT |
657 | |
658 | #define RMI4_MAX_PAGE 0xff | |
659 | #define RMI4_PAGE_SIZE 0x0100 | |
660 | ||
661 | #define PDT_START_SCAN_LOCATION 0x00e9 | |
662 | #define PDT_END_SCAN_LOCATION 0x0005 | |
663 | #define RMI4_END_OF_PDT(id) ((id) == 0x00 || (id) == 0xff) | |
664 | ||
665 | struct pdt_entry { | |
666 | u8 query_base_addr:8; | |
667 | u8 command_base_addr:8; | |
668 | u8 control_base_addr:8; | |
669 | u8 data_base_addr:8; | |
670 | u8 interrupt_source_count:3; | |
671 | u8 bits3and4:2; | |
672 | u8 function_version:2; | |
673 | u8 bit7:1; | |
674 | u8 function_number:8; | |
675 | } __attribute__((__packed__)); | |
676 | ||
677 | static inline unsigned long rmi_gen_mask(unsigned irq_base, unsigned irq_count) | |
678 | { | |
679 | return GENMASK(irq_count + irq_base - 1, irq_base); | |
680 | } | |
681 | ||
682 | static void rmi_register_function(struct rmi_data *data, | |
683 | struct pdt_entry *pdt_entry, int page, unsigned interrupt_count) | |
684 | { | |
685 | struct rmi_function *f = NULL; | |
686 | u16 page_base = page << 8; | |
687 | ||
688 | switch (pdt_entry->function_number) { | |
70e003f7 AD |
689 | case 0x01: |
690 | f = &data->f01; | |
691 | break; | |
9fb6bf02 BT |
692 | case 0x11: |
693 | f = &data->f11; | |
694 | break; | |
695 | case 0x30: | |
696 | f = &data->f30; | |
697 | break; | |
698 | } | |
699 | ||
700 | if (f) { | |
701 | f->page = page; | |
702 | f->query_base_addr = page_base | pdt_entry->query_base_addr; | |
703 | f->command_base_addr = page_base | pdt_entry->command_base_addr; | |
704 | f->control_base_addr = page_base | pdt_entry->control_base_addr; | |
705 | f->data_base_addr = page_base | pdt_entry->data_base_addr; | |
706 | f->interrupt_base = interrupt_count; | |
707 | f->interrupt_count = pdt_entry->interrupt_source_count; | |
708 | f->irq_mask = rmi_gen_mask(f->interrupt_base, | |
709 | f->interrupt_count); | |
9a98b338 | 710 | data->interrupt_enable_mask |= f->irq_mask; |
9fb6bf02 BT |
711 | } |
712 | } | |
713 | ||
714 | static int rmi_scan_pdt(struct hid_device *hdev) | |
715 | { | |
716 | struct rmi_data *data = hid_get_drvdata(hdev); | |
717 | struct pdt_entry entry; | |
718 | int page; | |
719 | bool page_has_function; | |
720 | int i; | |
721 | int retval; | |
722 | int interrupt = 0; | |
723 | u16 page_start, pdt_start , pdt_end; | |
724 | ||
725 | hid_info(hdev, "Scanning PDT...\n"); | |
726 | ||
727 | for (page = 0; (page <= RMI4_MAX_PAGE); page++) { | |
728 | page_start = RMI4_PAGE_SIZE * page; | |
729 | pdt_start = page_start + PDT_START_SCAN_LOCATION; | |
730 | pdt_end = page_start + PDT_END_SCAN_LOCATION; | |
731 | ||
732 | page_has_function = false; | |
733 | for (i = pdt_start; i >= pdt_end; i -= sizeof(entry)) { | |
734 | retval = rmi_read_block(hdev, i, &entry, sizeof(entry)); | |
735 | if (retval) { | |
736 | hid_err(hdev, | |
737 | "Read of PDT entry at %#06x failed.\n", | |
738 | i); | |
739 | goto error_exit; | |
740 | } | |
741 | ||
742 | if (RMI4_END_OF_PDT(entry.function_number)) | |
743 | break; | |
744 | ||
745 | page_has_function = true; | |
746 | ||
747 | hid_info(hdev, "Found F%02X on page %#04x\n", | |
748 | entry.function_number, page); | |
749 | ||
750 | rmi_register_function(data, &entry, page, interrupt); | |
751 | interrupt += entry.interrupt_source_count; | |
752 | } | |
753 | ||
754 | if (!page_has_function) | |
755 | break; | |
756 | } | |
757 | ||
758 | hid_info(hdev, "%s: Done with PDT scan.\n", __func__); | |
759 | retval = 0; | |
760 | ||
761 | error_exit: | |
762 | return retval; | |
763 | } | |
764 | ||
70e003f7 AD |
765 | #define RMI_DEVICE_F01_BASIC_QUERY_LEN 11 |
766 | ||
767 | static int rmi_populate_f01(struct hid_device *hdev) | |
768 | { | |
769 | struct rmi_data *data = hid_get_drvdata(hdev); | |
770 | u8 basic_queries[RMI_DEVICE_F01_BASIC_QUERY_LEN]; | |
771 | u8 info[3]; | |
772 | int ret; | |
773 | bool has_query42; | |
774 | bool has_lts; | |
775 | bool has_sensor_id; | |
776 | bool has_ds4_queries = false; | |
777 | bool has_build_id_query = false; | |
778 | bool has_package_id_query = false; | |
779 | u16 query_offset = data->f01.query_base_addr; | |
780 | u16 prod_info_addr; | |
781 | u8 ds4_query_len; | |
782 | ||
783 | ret = rmi_read_block(hdev, query_offset, basic_queries, | |
784 | RMI_DEVICE_F01_BASIC_QUERY_LEN); | |
785 | if (ret) { | |
786 | hid_err(hdev, "Can not read basic queries from Function 0x1.\n"); | |
787 | return ret; | |
788 | } | |
789 | ||
790 | has_lts = !!(basic_queries[0] & BIT(2)); | |
791 | has_sensor_id = !!(basic_queries[1] & BIT(3)); | |
792 | has_query42 = !!(basic_queries[1] & BIT(7)); | |
793 | ||
794 | query_offset += 11; | |
795 | prod_info_addr = query_offset + 6; | |
796 | query_offset += 10; | |
797 | ||
798 | if (has_lts) | |
799 | query_offset += 20; | |
800 | ||
801 | if (has_sensor_id) | |
802 | query_offset++; | |
803 | ||
804 | if (has_query42) { | |
805 | ret = rmi_read(hdev, query_offset, info); | |
806 | if (ret) { | |
807 | hid_err(hdev, "Can not read query42.\n"); | |
808 | return ret; | |
809 | } | |
810 | has_ds4_queries = !!(info[0] & BIT(0)); | |
811 | query_offset++; | |
812 | } | |
813 | ||
814 | if (has_ds4_queries) { | |
815 | ret = rmi_read(hdev, query_offset, &ds4_query_len); | |
816 | if (ret) { | |
817 | hid_err(hdev, "Can not read DS4 Query length.\n"); | |
818 | return ret; | |
819 | } | |
820 | query_offset++; | |
821 | ||
822 | if (ds4_query_len > 0) { | |
823 | ret = rmi_read(hdev, query_offset, info); | |
824 | if (ret) { | |
825 | hid_err(hdev, "Can not read DS4 query.\n"); | |
826 | return ret; | |
827 | } | |
828 | ||
829 | has_package_id_query = !!(info[0] & BIT(0)); | |
830 | has_build_id_query = !!(info[0] & BIT(1)); | |
831 | } | |
832 | } | |
833 | ||
834 | if (has_package_id_query) | |
835 | prod_info_addr++; | |
836 | ||
837 | if (has_build_id_query) { | |
838 | ret = rmi_read_block(hdev, prod_info_addr, info, 3); | |
839 | if (ret) { | |
840 | hid_err(hdev, "Can not read product info.\n"); | |
841 | return ret; | |
842 | } | |
843 | ||
844 | data->firmware_id = info[1] << 8 | info[0]; | |
845 | data->firmware_id += info[2] * 65536; | |
846 | } | |
847 | ||
9a98b338 AD |
848 | ret = rmi_read_block(hdev, data->f01.control_base_addr, info, |
849 | 2); | |
09256360 AD |
850 | |
851 | if (ret) { | |
9a98b338 | 852 | hid_err(hdev, "can not read f01 ctrl registers\n"); |
09256360 AD |
853 | return ret; |
854 | } | |
9a98b338 AD |
855 | |
856 | data->f01_ctrl0 = info[0]; | |
857 | ||
858 | if (!info[1]) { | |
859 | /* | |
860 | * Do to a firmware bug in some touchpads the F01 interrupt | |
861 | * enable control register will be cleared on reset. | |
862 | * This will stop the touchpad from reporting data, so | |
863 | * if F01 CTRL1 is 0 then we need to explicitly enable | |
864 | * interrupts for the functions we want data for. | |
865 | */ | |
866 | data->restore_interrupt_mask = true; | |
867 | ||
868 | ret = rmi_write(hdev, data->f01.control_base_addr + 1, | |
869 | &data->interrupt_enable_mask); | |
870 | if (ret) { | |
871 | hid_err(hdev, "can not write to control reg 1: %d.\n", | |
872 | ret); | |
873 | return ret; | |
874 | } | |
875 | } | |
876 | ||
70e003f7 AD |
877 | return 0; |
878 | } | |
879 | ||
9fb6bf02 BT |
880 | static int rmi_populate_f11(struct hid_device *hdev) |
881 | { | |
882 | struct rmi_data *data = hid_get_drvdata(hdev); | |
883 | u8 buf[20]; | |
884 | int ret; | |
f15475c3 | 885 | bool has_query9; |
9e2c327e | 886 | bool has_query10 = false; |
f15475c3 | 887 | bool has_query11; |
9fb6bf02 | 888 | bool has_query12; |
8414947a AD |
889 | bool has_query27; |
890 | bool has_query28; | |
891 | bool has_query36 = false; | |
9fb6bf02 | 892 | bool has_physical_props; |
9e2c327e AD |
893 | bool has_gestures; |
894 | bool has_rel; | |
8414947a | 895 | bool has_data40 = false; |
05ba999f | 896 | bool has_dribble = false; |
f097deef | 897 | bool has_palm_detect = false; |
9fb6bf02 | 898 | unsigned x_size, y_size; |
8414947a | 899 | u16 query_offset; |
9fb6bf02 BT |
900 | |
901 | if (!data->f11.query_base_addr) { | |
902 | hid_err(hdev, "No 2D sensor found, giving up.\n"); | |
903 | return -ENODEV; | |
904 | } | |
905 | ||
906 | /* query 0 contains some useful information */ | |
907 | ret = rmi_read(hdev, data->f11.query_base_addr, buf); | |
908 | if (ret) { | |
909 | hid_err(hdev, "can not get query 0: %d.\n", ret); | |
910 | return ret; | |
911 | } | |
f15475c3 AD |
912 | has_query9 = !!(buf[0] & BIT(3)); |
913 | has_query11 = !!(buf[0] & BIT(4)); | |
9fb6bf02 | 914 | has_query12 = !!(buf[0] & BIT(5)); |
8414947a AD |
915 | has_query27 = !!(buf[0] & BIT(6)); |
916 | has_query28 = !!(buf[0] & BIT(7)); | |
9fb6bf02 BT |
917 | |
918 | /* query 1 to get the max number of fingers */ | |
919 | ret = rmi_read(hdev, data->f11.query_base_addr + 1, buf); | |
920 | if (ret) { | |
921 | hid_err(hdev, "can not get NumberOfFingers: %d.\n", ret); | |
922 | return ret; | |
923 | } | |
924 | data->max_fingers = (buf[0] & 0x07) + 1; | |
925 | if (data->max_fingers > 5) | |
926 | data->max_fingers = 10; | |
927 | ||
928 | data->f11.report_size = data->max_fingers * 5 + | |
929 | DIV_ROUND_UP(data->max_fingers, 4); | |
930 | ||
931 | if (!(buf[0] & BIT(4))) { | |
932 | hid_err(hdev, "No absolute events, giving up.\n"); | |
933 | return -ENODEV; | |
934 | } | |
935 | ||
9e2c327e AD |
936 | has_rel = !!(buf[0] & BIT(3)); |
937 | has_gestures = !!(buf[0] & BIT(5)); | |
938 | ||
05ba999f AD |
939 | ret = rmi_read(hdev, data->f11.query_base_addr + 5, buf); |
940 | if (ret) { | |
941 | hid_err(hdev, "can not get absolute data sources: %d.\n", ret); | |
942 | return ret; | |
943 | } | |
944 | ||
945 | has_dribble = !!(buf[0] & BIT(4)); | |
946 | ||
9fb6bf02 | 947 | /* |
9e2c327e AD |
948 | * At least 4 queries are guaranteed to be present in F11 |
949 | * +1 for query 5 which is present since absolute events are | |
950 | * reported and +1 for query 12. | |
9fb6bf02 | 951 | */ |
8414947a | 952 | query_offset = 6; |
9e2c327e AD |
953 | |
954 | if (has_rel) | |
8414947a | 955 | ++query_offset; /* query 6 is present */ |
9e2c327e | 956 | |
cabd9b5f AD |
957 | if (has_gestures) { |
958 | /* query 8 to find out if query 10 exists */ | |
959 | ret = rmi_read(hdev, | |
960 | data->f11.query_base_addr + query_offset + 1, buf); | |
961 | if (ret) { | |
962 | hid_err(hdev, "can not read gesture information: %d.\n", | |
963 | ret); | |
964 | return ret; | |
965 | } | |
f097deef | 966 | has_palm_detect = !!(buf[0] & BIT(0)); |
cabd9b5f AD |
967 | has_query10 = !!(buf[0] & BIT(2)); |
968 | ||
8414947a | 969 | query_offset += 2; /* query 7 and 8 are present */ |
cabd9b5f | 970 | } |
f15475c3 AD |
971 | |
972 | if (has_query9) | |
8414947a | 973 | ++query_offset; |
f15475c3 AD |
974 | |
975 | if (has_query10) | |
8414947a | 976 | ++query_offset; |
f15475c3 AD |
977 | |
978 | if (has_query11) | |
8414947a | 979 | ++query_offset; |
f15475c3 AD |
980 | |
981 | /* query 12 to know if the physical properties are reported */ | |
9fb6bf02 | 982 | if (has_query12) { |
f15475c3 | 983 | ret = rmi_read(hdev, data->f11.query_base_addr |
8414947a | 984 | + query_offset, buf); |
9fb6bf02 BT |
985 | if (ret) { |
986 | hid_err(hdev, "can not get query 12: %d.\n", ret); | |
987 | return ret; | |
988 | } | |
989 | has_physical_props = !!(buf[0] & BIT(5)); | |
990 | ||
991 | if (has_physical_props) { | |
8414947a | 992 | query_offset += 1; |
9fb6bf02 | 993 | ret = rmi_read_block(hdev, |
f15475c3 | 994 | data->f11.query_base_addr |
8414947a | 995 | + query_offset, buf, 4); |
9fb6bf02 BT |
996 | if (ret) { |
997 | hid_err(hdev, "can not read query 15-18: %d.\n", | |
998 | ret); | |
999 | return ret; | |
1000 | } | |
1001 | ||
1002 | x_size = buf[0] | (buf[1] << 8); | |
1003 | y_size = buf[2] | (buf[3] << 8); | |
1004 | ||
1005 | data->x_size_mm = DIV_ROUND_CLOSEST(x_size, 10); | |
1006 | data->y_size_mm = DIV_ROUND_CLOSEST(y_size, 10); | |
1007 | ||
1008 | hid_info(hdev, "%s: size in mm: %d x %d\n", | |
1009 | __func__, data->x_size_mm, data->y_size_mm); | |
8414947a AD |
1010 | |
1011 | /* | |
1012 | * query 15 - 18 contain the size of the sensor | |
1013 | * and query 19 - 26 contain bezel dimensions | |
1014 | */ | |
1015 | query_offset += 12; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (has_query27) | |
1020 | ++query_offset; | |
1021 | ||
1022 | if (has_query28) { | |
1023 | ret = rmi_read(hdev, data->f11.query_base_addr | |
1024 | + query_offset, buf); | |
1025 | if (ret) { | |
1026 | hid_err(hdev, "can not get query 28: %d.\n", ret); | |
1027 | return ret; | |
1028 | } | |
1029 | ||
1030 | has_query36 = !!(buf[0] & BIT(6)); | |
1031 | } | |
1032 | ||
1033 | if (has_query36) { | |
1034 | query_offset += 2; | |
1035 | ret = rmi_read(hdev, data->f11.query_base_addr | |
1036 | + query_offset, buf); | |
1037 | if (ret) { | |
1038 | hid_err(hdev, "can not get query 36: %d.\n", ret); | |
1039 | return ret; | |
9fb6bf02 | 1040 | } |
8414947a AD |
1041 | |
1042 | has_data40 = !!(buf[0] & BIT(5)); | |
9fb6bf02 BT |
1043 | } |
1044 | ||
8414947a AD |
1045 | |
1046 | if (has_data40) | |
1047 | data->f11.report_size += data->max_fingers * 2; | |
1048 | ||
7035f3a4 AD |
1049 | ret = rmi_read_block(hdev, data->f11.control_base_addr, |
1050 | data->f11_ctrl_regs, RMI_F11_CTRL_REG_COUNT); | |
9fb6bf02 | 1051 | if (ret) { |
f097deef | 1052 | hid_err(hdev, "can not read ctrl block of size 11: %d.\n", ret); |
9fb6bf02 BT |
1053 | return ret; |
1054 | } | |
1055 | ||
7035f3a4 AD |
1056 | /* data->f11_ctrl_regs now contains valid register data */ |
1057 | data->read_f11_ctrl_regs = true; | |
1058 | ||
1059 | data->max_x = data->f11_ctrl_regs[6] | (data->f11_ctrl_regs[7] << 8); | |
1060 | data->max_y = data->f11_ctrl_regs[8] | (data->f11_ctrl_regs[9] << 8); | |
9fb6bf02 | 1061 | |
05ba999f | 1062 | if (has_dribble) { |
7035f3a4 AD |
1063 | data->f11_ctrl_regs[0] = data->f11_ctrl_regs[0] & ~BIT(6); |
1064 | ret = rmi_write(hdev, data->f11.control_base_addr, | |
1065 | data->f11_ctrl_regs); | |
05ba999f AD |
1066 | if (ret) { |
1067 | hid_err(hdev, "can not write to control reg 0: %d.\n", | |
1068 | ret); | |
1069 | return ret; | |
1070 | } | |
1071 | } | |
1072 | ||
f097deef | 1073 | if (has_palm_detect) { |
7035f3a4 | 1074 | data->f11_ctrl_regs[11] = data->f11_ctrl_regs[11] & ~BIT(0); |
f097deef | 1075 | ret = rmi_write(hdev, data->f11.control_base_addr + 11, |
7035f3a4 | 1076 | &data->f11_ctrl_regs[11]); |
f097deef AD |
1077 | if (ret) { |
1078 | hid_err(hdev, "can not write to control reg 11: %d.\n", | |
1079 | ret); | |
1080 | return ret; | |
1081 | } | |
1082 | } | |
1083 | ||
9fb6bf02 BT |
1084 | return 0; |
1085 | } | |
1086 | ||
1087 | static int rmi_populate_f30(struct hid_device *hdev) | |
1088 | { | |
1089 | struct rmi_data *data = hid_get_drvdata(hdev); | |
1090 | u8 buf[20]; | |
1091 | int ret; | |
1092 | bool has_gpio, has_led; | |
1093 | unsigned bytes_per_ctrl; | |
1094 | u8 ctrl2_addr; | |
1095 | int ctrl2_3_length; | |
1096 | int i; | |
1097 | ||
1098 | /* function F30 is for physical buttons */ | |
1099 | if (!data->f30.query_base_addr) { | |
1100 | hid_err(hdev, "No GPIO/LEDs found, giving up.\n"); | |
1101 | return -ENODEV; | |
1102 | } | |
1103 | ||
1104 | ret = rmi_read_block(hdev, data->f30.query_base_addr, buf, 2); | |
1105 | if (ret) { | |
1106 | hid_err(hdev, "can not get F30 query registers: %d.\n", ret); | |
1107 | return ret; | |
1108 | } | |
1109 | ||
1110 | has_gpio = !!(buf[0] & BIT(3)); | |
1111 | has_led = !!(buf[0] & BIT(2)); | |
1112 | data->gpio_led_count = buf[1] & 0x1f; | |
1113 | ||
1114 | /* retrieve ctrl 2 & 3 registers */ | |
1115 | bytes_per_ctrl = (data->gpio_led_count + 7) / 8; | |
1116 | /* Ctrl0 is present only if both has_gpio and has_led are set*/ | |
1117 | ctrl2_addr = (has_gpio && has_led) ? bytes_per_ctrl : 0; | |
1118 | /* Ctrl1 is always be present */ | |
1119 | ctrl2_addr += bytes_per_ctrl; | |
1120 | ctrl2_3_length = 2 * bytes_per_ctrl; | |
1121 | ||
1122 | data->f30.report_size = bytes_per_ctrl; | |
1123 | ||
1124 | ret = rmi_read_block(hdev, data->f30.control_base_addr + ctrl2_addr, | |
1125 | buf, ctrl2_3_length); | |
1126 | if (ret) { | |
1127 | hid_err(hdev, "can not read ctrl 2&3 block of size %d: %d.\n", | |
1128 | ctrl2_3_length, ret); | |
1129 | return ret; | |
1130 | } | |
1131 | ||
1132 | for (i = 0; i < data->gpio_led_count; i++) { | |
1133 | int byte_position = i >> 3; | |
1134 | int bit_position = i & 0x07; | |
1135 | u8 dir_byte = buf[byte_position]; | |
1136 | u8 data_byte = buf[byte_position + bytes_per_ctrl]; | |
1137 | bool dir = (dir_byte >> bit_position) & BIT(0); | |
1138 | bool dat = (data_byte >> bit_position) & BIT(0); | |
1139 | ||
1140 | if (dir == 0) { | |
1141 | /* input mode */ | |
1142 | if (dat) { | |
1143 | /* actual buttons have pull up resistor */ | |
1144 | data->button_count++; | |
1145 | set_bit(i, &data->button_mask); | |
1146 | set_bit(i, &data->button_state_mask); | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | } | |
1151 | ||
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | static int rmi_populate(struct hid_device *hdev) | |
1156 | { | |
10e87dc4 | 1157 | struct rmi_data *data = hid_get_drvdata(hdev); |
9fb6bf02 BT |
1158 | int ret; |
1159 | ||
1160 | ret = rmi_scan_pdt(hdev); | |
1161 | if (ret) { | |
1162 | hid_err(hdev, "PDT scan failed with code %d.\n", ret); | |
1163 | return ret; | |
1164 | } | |
1165 | ||
70e003f7 AD |
1166 | ret = rmi_populate_f01(hdev); |
1167 | if (ret) { | |
1168 | hid_err(hdev, "Error while initializing F01 (%d).\n", ret); | |
1169 | return ret; | |
1170 | } | |
1171 | ||
9fb6bf02 BT |
1172 | ret = rmi_populate_f11(hdev); |
1173 | if (ret) { | |
1174 | hid_err(hdev, "Error while initializing F11 (%d).\n", ret); | |
1175 | return ret; | |
1176 | } | |
1177 | ||
10e87dc4 AD |
1178 | if (!(data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)) { |
1179 | ret = rmi_populate_f30(hdev); | |
1180 | if (ret) | |
1181 | hid_warn(hdev, "Error while initializing F30 (%d).\n", ret); | |
1182 | } | |
9fb6bf02 BT |
1183 | |
1184 | return 0; | |
1185 | } | |
1186 | ||
9154301a | 1187 | static int rmi_input_configured(struct hid_device *hdev, struct hid_input *hi) |
9fb6bf02 BT |
1188 | { |
1189 | struct rmi_data *data = hid_get_drvdata(hdev); | |
1190 | struct input_dev *input = hi->input; | |
1191 | int ret; | |
1192 | int res_x, res_y, i; | |
1193 | ||
1194 | data->input = input; | |
1195 | ||
1196 | hid_dbg(hdev, "Opening low level driver\n"); | |
1197 | ret = hid_hw_open(hdev); | |
1198 | if (ret) | |
9154301a | 1199 | return ret; |
9fb6bf02 | 1200 | |
2f43de60 | 1201 | if (!(data->device_flags & RMI_DEVICE)) |
9154301a | 1202 | return 0; |
2f43de60 | 1203 | |
9fb6bf02 BT |
1204 | /* Allow incoming hid reports */ |
1205 | hid_device_io_start(hdev); | |
1206 | ||
1207 | ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
1208 | if (ret < 0) { | |
1209 | dev_err(&hdev->dev, "failed to set rmi mode\n"); | |
1210 | goto exit; | |
1211 | } | |
1212 | ||
1213 | ret = rmi_set_page(hdev, 0); | |
1214 | if (ret < 0) { | |
1215 | dev_err(&hdev->dev, "failed to set page select to 0.\n"); | |
1216 | goto exit; | |
1217 | } | |
1218 | ||
1219 | ret = rmi_populate(hdev); | |
1220 | if (ret) | |
1221 | goto exit; | |
1222 | ||
70e003f7 AD |
1223 | hid_info(hdev, "firmware id: %ld\n", data->firmware_id); |
1224 | ||
9fb6bf02 BT |
1225 | __set_bit(EV_ABS, input->evbit); |
1226 | input_set_abs_params(input, ABS_MT_POSITION_X, 1, data->max_x, 0, 0); | |
1227 | input_set_abs_params(input, ABS_MT_POSITION_Y, 1, data->max_y, 0, 0); | |
1228 | ||
b668fdce | 1229 | if (data->x_size_mm && data->y_size_mm) { |
9fb6bf02 | 1230 | res_x = (data->max_x - 1) / data->x_size_mm; |
b668fdce | 1231 | res_y = (data->max_y - 1) / data->y_size_mm; |
9fb6bf02 BT |
1232 | |
1233 | input_abs_set_res(input, ABS_MT_POSITION_X, res_x); | |
1234 | input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); | |
1235 | } | |
1236 | ||
1237 | input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
1238 | input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0); | |
1239 | input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0); | |
1240 | input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0); | |
1241 | ||
9154301a DT |
1242 | ret = input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); |
1243 | if (ret < 0) | |
1244 | goto exit; | |
9fb6bf02 BT |
1245 | |
1246 | if (data->button_count) { | |
1247 | __set_bit(EV_KEY, input->evbit); | |
1248 | for (i = 0; i < data->button_count; i++) | |
1249 | __set_bit(BTN_LEFT + i, input->keybit); | |
1250 | ||
1251 | if (data->button_count == 1) | |
1252 | __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); | |
1253 | } | |
1254 | ||
1255 | set_bit(RMI_STARTED, &data->flags); | |
1256 | ||
1257 | exit: | |
1258 | hid_device_io_stop(hdev); | |
1259 | hid_hw_close(hdev); | |
9154301a | 1260 | return ret; |
9fb6bf02 BT |
1261 | } |
1262 | ||
1263 | static int rmi_input_mapping(struct hid_device *hdev, | |
1264 | struct hid_input *hi, struct hid_field *field, | |
1265 | struct hid_usage *usage, unsigned long **bit, int *max) | |
1266 | { | |
2f43de60 AD |
1267 | struct rmi_data *data = hid_get_drvdata(hdev); |
1268 | ||
1269 | /* | |
1270 | * we want to make HID ignore the advertised HID collection | |
1271 | * for RMI deivces | |
1272 | */ | |
79364d87 AD |
1273 | if (data->device_flags & RMI_DEVICE) { |
1274 | if ((data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) && | |
1275 | ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)) | |
1276 | return 0; | |
1277 | ||
2f43de60 | 1278 | return -1; |
79364d87 | 1279 | } |
2f43de60 AD |
1280 | |
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | static int rmi_check_valid_report_id(struct hid_device *hdev, unsigned type, | |
1285 | unsigned id, struct hid_report **report) | |
1286 | { | |
1287 | int i; | |
1288 | ||
1289 | *report = hdev->report_enum[type].report_id_hash[id]; | |
1290 | if (*report) { | |
1291 | for (i = 0; i < (*report)->maxfield; i++) { | |
1292 | unsigned app = (*report)->field[i]->application; | |
1293 | if ((app & HID_USAGE_PAGE) >= HID_UP_MSVENDOR) | |
1294 | return 1; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | return 0; | |
9fb6bf02 BT |
1299 | } |
1300 | ||
1301 | static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
1302 | { | |
1303 | struct rmi_data *data = NULL; | |
1304 | int ret; | |
1305 | size_t alloc_size; | |
dd3edeb6 AD |
1306 | struct hid_report *input_report; |
1307 | struct hid_report *output_report; | |
2f43de60 | 1308 | struct hid_report *feature_report; |
9fb6bf02 BT |
1309 | |
1310 | data = devm_kzalloc(&hdev->dev, sizeof(struct rmi_data), GFP_KERNEL); | |
1311 | if (!data) | |
1312 | return -ENOMEM; | |
1313 | ||
1314 | INIT_WORK(&data->reset_work, rmi_reset_work); | |
1315 | data->hdev = hdev; | |
1316 | ||
1317 | hid_set_drvdata(hdev, data); | |
1318 | ||
1319 | hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; | |
1320 | ||
1321 | ret = hid_parse(hdev); | |
1322 | if (ret) { | |
1323 | hid_err(hdev, "parse failed\n"); | |
1324 | return ret; | |
1325 | } | |
1326 | ||
79364d87 AD |
1327 | if (id->driver_data) |
1328 | data->device_flags = id->driver_data; | |
1329 | ||
2f43de60 AD |
1330 | /* |
1331 | * Check for the RMI specific report ids. If they are misisng | |
1332 | * simply return and let the events be processed by hid-input | |
1333 | */ | |
1334 | if (!rmi_check_valid_report_id(hdev, HID_FEATURE_REPORT, | |
1335 | RMI_SET_RMI_MODE_REPORT_ID, &feature_report)) { | |
1336 | hid_dbg(hdev, "device does not have set mode feature report\n"); | |
1337 | goto start; | |
1338 | } | |
1339 | ||
1340 | if (!rmi_check_valid_report_id(hdev, HID_INPUT_REPORT, | |
1341 | RMI_ATTN_REPORT_ID, &input_report)) { | |
1342 | hid_dbg(hdev, "device does not have attention input report\n"); | |
1343 | goto start; | |
dd3edeb6 AD |
1344 | } |
1345 | ||
b8aed6ea | 1346 | data->input_report_size = hid_report_len(input_report); |
dd3edeb6 | 1347 | |
2f43de60 AD |
1348 | if (!rmi_check_valid_report_id(hdev, HID_OUTPUT_REPORT, |
1349 | RMI_WRITE_REPORT_ID, &output_report)) { | |
1350 | hid_dbg(hdev, | |
1351 | "device does not have rmi write output report\n"); | |
1352 | goto start; | |
dd3edeb6 AD |
1353 | } |
1354 | ||
b8aed6ea | 1355 | data->output_report_size = hid_report_len(output_report); |
9fb6bf02 | 1356 | |
2f43de60 | 1357 | data->device_flags |= RMI_DEVICE; |
9fb6bf02 BT |
1358 | alloc_size = data->output_report_size + data->input_report_size; |
1359 | ||
1360 | data->writeReport = devm_kzalloc(&hdev->dev, alloc_size, GFP_KERNEL); | |
1361 | if (!data->writeReport) { | |
1362 | ret = -ENOMEM; | |
1363 | return ret; | |
1364 | } | |
1365 | ||
1366 | data->readReport = data->writeReport + data->output_report_size; | |
1367 | ||
1368 | init_waitqueue_head(&data->wait); | |
1369 | ||
1370 | mutex_init(&data->page_mutex); | |
1371 | ||
2f43de60 | 1372 | start: |
9fb6bf02 BT |
1373 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
1374 | if (ret) { | |
1375 | hid_err(hdev, "hw start failed\n"); | |
1376 | return ret; | |
1377 | } | |
1378 | ||
2f43de60 AD |
1379 | if ((data->device_flags & RMI_DEVICE) && |
1380 | !test_bit(RMI_STARTED, &data->flags)) | |
daebdd7e AD |
1381 | /* |
1382 | * The device maybe in the bootloader if rmi_input_configured | |
1383 | * failed to find F11 in the PDT. Print an error, but don't | |
1384 | * return an error from rmi_probe so that hidraw will be | |
1385 | * accessible from userspace. That way a userspace tool | |
1386 | * can be used to reload working firmware on the touchpad. | |
1387 | */ | |
1388 | hid_err(hdev, "Device failed to be properly configured\n"); | |
9fb6bf02 | 1389 | |
9fb6bf02 BT |
1390 | return 0; |
1391 | } | |
1392 | ||
1393 | static void rmi_remove(struct hid_device *hdev) | |
1394 | { | |
1395 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
1396 | ||
1397 | clear_bit(RMI_STARTED, &hdata->flags); | |
1398 | ||
1399 | hid_hw_stop(hdev); | |
1400 | } | |
1401 | ||
1402 | static const struct hid_device_id rmi_id[] = { | |
e9287099 AD |
1403 | { HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14), |
1404 | .driver_data = RMI_DEVICE_HAS_PHYS_BUTTONS }, | |
ba391e5a | 1405 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_RMI, HID_ANY_ID, HID_ANY_ID) }, |
9fb6bf02 BT |
1406 | { } |
1407 | }; | |
1408 | MODULE_DEVICE_TABLE(hid, rmi_id); | |
1409 | ||
1410 | static struct hid_driver rmi_driver = { | |
1411 | .name = "hid-rmi", | |
1412 | .id_table = rmi_id, | |
1413 | .probe = rmi_probe, | |
1414 | .remove = rmi_remove, | |
2f43de60 | 1415 | .event = rmi_event, |
9fb6bf02 BT |
1416 | .raw_event = rmi_raw_event, |
1417 | .input_mapping = rmi_input_mapping, | |
1418 | .input_configured = rmi_input_configured, | |
1419 | #ifdef CONFIG_PM | |
09256360 | 1420 | .suspend = rmi_suspend, |
9fb6bf02 BT |
1421 | .resume = rmi_post_resume, |
1422 | .reset_resume = rmi_post_reset, | |
1423 | #endif | |
1424 | }; | |
1425 | ||
1426 | module_hid_driver(rmi_driver); | |
1427 | ||
1428 | MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>"); | |
1429 | MODULE_DESCRIPTION("RMI HID driver"); | |
1430 | MODULE_LICENSE("GPL"); |