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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; | |
6dab07df BT |
191 | const u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode}; |
192 | u8 *buf; | |
9fb6bf02 | 193 | |
6dab07df BT |
194 | buf = kmemdup(txbuf, sizeof(txbuf), GFP_KERNEL); |
195 | if (!buf) | |
196 | return -ENOMEM; | |
197 | ||
198 | ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, buf, | |
9fb6bf02 | 199 | sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT); |
6dab07df | 200 | kfree(buf); |
9fb6bf02 BT |
201 | if (ret < 0) { |
202 | dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode, | |
203 | ret); | |
204 | return ret; | |
205 | } | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static int rmi_write_report(struct hid_device *hdev, u8 *report, int len) | |
211 | { | |
212 | int ret; | |
213 | ||
214 | ret = hid_hw_output_report(hdev, (void *)report, len); | |
215 | if (ret < 0) { | |
216 | dev_err(&hdev->dev, "failed to write hid report (%d)\n", ret); | |
217 | return ret; | |
218 | } | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
223 | static int rmi_read_block(struct hid_device *hdev, u16 addr, void *buf, | |
224 | const int len) | |
225 | { | |
226 | struct rmi_data *data = hid_get_drvdata(hdev); | |
227 | int ret; | |
228 | int bytes_read; | |
229 | int bytes_needed; | |
230 | int retries; | |
231 | int read_input_count; | |
232 | ||
233 | mutex_lock(&data->page_mutex); | |
234 | ||
235 | if (RMI_PAGE(addr) != data->page) { | |
236 | ret = rmi_set_page(hdev, RMI_PAGE(addr)); | |
237 | if (ret < 0) | |
238 | goto exit; | |
239 | } | |
240 | ||
241 | for (retries = 5; retries > 0; retries--) { | |
242 | data->writeReport[0] = RMI_READ_ADDR_REPORT_ID; | |
243 | data->writeReport[1] = 0; /* old 1 byte read count */ | |
244 | data->writeReport[2] = addr & 0xFF; | |
245 | data->writeReport[3] = (addr >> 8) & 0xFF; | |
246 | data->writeReport[4] = len & 0xFF; | |
247 | data->writeReport[5] = (len >> 8) & 0xFF; | |
248 | ||
249 | set_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
250 | ||
251 | ret = rmi_write_report(hdev, data->writeReport, | |
252 | data->output_report_size); | |
253 | if (ret != data->output_report_size) { | |
254 | clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
255 | dev_err(&hdev->dev, | |
256 | "failed to write request output report (%d)\n", | |
257 | ret); | |
258 | goto exit; | |
259 | } | |
260 | ||
261 | bytes_read = 0; | |
262 | bytes_needed = len; | |
263 | while (bytes_read < len) { | |
264 | if (!wait_event_timeout(data->wait, | |
265 | test_bit(RMI_READ_DATA_PENDING, &data->flags), | |
266 | msecs_to_jiffies(1000))) { | |
267 | hid_warn(hdev, "%s: timeout elapsed\n", | |
268 | __func__); | |
269 | ret = -EAGAIN; | |
270 | break; | |
271 | } | |
272 | ||
273 | read_input_count = data->readReport[1]; | |
274 | memcpy(buf + bytes_read, &data->readReport[2], | |
275 | read_input_count < bytes_needed ? | |
276 | read_input_count : bytes_needed); | |
277 | ||
278 | bytes_read += read_input_count; | |
279 | bytes_needed -= read_input_count; | |
280 | clear_bit(RMI_READ_DATA_PENDING, &data->flags); | |
281 | } | |
282 | ||
283 | if (ret >= 0) { | |
284 | ret = 0; | |
285 | break; | |
286 | } | |
287 | } | |
288 | ||
289 | exit: | |
290 | clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); | |
291 | mutex_unlock(&data->page_mutex); | |
292 | return ret; | |
293 | } | |
294 | ||
295 | static inline int rmi_read(struct hid_device *hdev, u16 addr, void *buf) | |
296 | { | |
297 | return rmi_read_block(hdev, addr, buf, 1); | |
298 | } | |
299 | ||
dd8df284 AD |
300 | static int rmi_write_block(struct hid_device *hdev, u16 addr, void *buf, |
301 | const int len) | |
302 | { | |
303 | struct rmi_data *data = hid_get_drvdata(hdev); | |
304 | int ret; | |
305 | ||
306 | mutex_lock(&data->page_mutex); | |
307 | ||
308 | if (RMI_PAGE(addr) != data->page) { | |
309 | ret = rmi_set_page(hdev, RMI_PAGE(addr)); | |
310 | if (ret < 0) | |
311 | goto exit; | |
312 | } | |
313 | ||
314 | data->writeReport[0] = RMI_WRITE_REPORT_ID; | |
315 | data->writeReport[1] = len; | |
316 | data->writeReport[2] = addr & 0xFF; | |
317 | data->writeReport[3] = (addr >> 8) & 0xFF; | |
318 | memcpy(&data->writeReport[4], buf, len); | |
319 | ||
320 | ret = rmi_write_report(hdev, data->writeReport, | |
321 | data->output_report_size); | |
322 | if (ret < 0) { | |
323 | dev_err(&hdev->dev, | |
324 | "failed to write request output report (%d)\n", | |
325 | ret); | |
326 | goto exit; | |
327 | } | |
328 | ret = 0; | |
329 | ||
330 | exit: | |
331 | mutex_unlock(&data->page_mutex); | |
332 | return ret; | |
333 | } | |
334 | ||
335 | static inline int rmi_write(struct hid_device *hdev, u16 addr, void *buf) | |
336 | { | |
337 | return rmi_write_block(hdev, addr, buf, 1); | |
338 | } | |
339 | ||
9fb6bf02 BT |
340 | static void rmi_f11_process_touch(struct rmi_data *hdata, int slot, |
341 | u8 finger_state, u8 *touch_data) | |
342 | { | |
343 | int x, y, wx, wy; | |
344 | int wide, major, minor; | |
345 | int z; | |
346 | ||
347 | input_mt_slot(hdata->input, slot); | |
348 | input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, | |
349 | finger_state == 0x01); | |
350 | if (finger_state == 0x01) { | |
876e7a8a | 351 | x = (touch_data[0] << 4) | (touch_data[2] & 0x0F); |
9fb6bf02 | 352 | y = (touch_data[1] << 4) | (touch_data[2] >> 4); |
876e7a8a | 353 | wx = touch_data[3] & 0x0F; |
9fb6bf02 BT |
354 | wy = touch_data[3] >> 4; |
355 | wide = (wx > wy); | |
356 | major = max(wx, wy); | |
357 | minor = min(wx, wy); | |
358 | z = touch_data[4]; | |
359 | ||
360 | /* y is inverted */ | |
361 | y = hdata->max_y - y; | |
362 | ||
363 | input_event(hdata->input, EV_ABS, ABS_MT_POSITION_X, x); | |
364 | input_event(hdata->input, EV_ABS, ABS_MT_POSITION_Y, y); | |
365 | input_event(hdata->input, EV_ABS, ABS_MT_ORIENTATION, wide); | |
366 | input_event(hdata->input, EV_ABS, ABS_MT_PRESSURE, z); | |
367 | input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); | |
368 | input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); | |
369 | } | |
370 | } | |
371 | ||
9a98b338 AD |
372 | static int rmi_reset_attn_mode(struct hid_device *hdev) |
373 | { | |
374 | struct rmi_data *data = hid_get_drvdata(hdev); | |
375 | int ret; | |
376 | ||
377 | ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
378 | if (ret) | |
379 | return ret; | |
380 | ||
381 | if (data->restore_interrupt_mask) { | |
382 | ret = rmi_write(hdev, data->f01.control_base_addr + 1, | |
383 | &data->interrupt_enable_mask); | |
384 | if (ret) { | |
385 | hid_err(hdev, "can not write F01 control register\n"); | |
386 | return ret; | |
387 | } | |
388 | } | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
9fb6bf02 BT |
393 | static void rmi_reset_work(struct work_struct *work) |
394 | { | |
395 | struct rmi_data *hdata = container_of(work, struct rmi_data, | |
396 | reset_work); | |
397 | ||
398 | /* switch the device to RMI if we receive a generic mouse report */ | |
9a98b338 | 399 | rmi_reset_attn_mode(hdata->hdev); |
9fb6bf02 BT |
400 | } |
401 | ||
402 | static inline int rmi_schedule_reset(struct hid_device *hdev) | |
403 | { | |
404 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
405 | return schedule_work(&hdata->reset_work); | |
406 | } | |
407 | ||
408 | static int rmi_f11_input_event(struct hid_device *hdev, u8 irq, u8 *data, | |
409 | int size) | |
410 | { | |
411 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
412 | int offset; | |
413 | int i; | |
414 | ||
5b65c2a0 | 415 | if (!(irq & hdata->f11.irq_mask) || size <= 0) |
9fb6bf02 BT |
416 | return 0; |
417 | ||
418 | offset = (hdata->max_fingers >> 2) + 1; | |
419 | for (i = 0; i < hdata->max_fingers; i++) { | |
420 | int fs_byte_position = i >> 2; | |
421 | int fs_bit_position = (i & 0x3) << 1; | |
422 | int finger_state = (data[fs_byte_position] >> fs_bit_position) & | |
423 | 0x03; | |
5b65c2a0 BT |
424 | int position = offset + 5 * i; |
425 | ||
426 | if (position + 5 > size) { | |
427 | /* partial report, go on with what we received */ | |
428 | printk_once(KERN_WARNING | |
429 | "%s %s: Detected incomplete finger report. Finger reports may occasionally get dropped on this platform.\n", | |
430 | dev_driver_string(&hdev->dev), | |
431 | dev_name(&hdev->dev)); | |
432 | hid_dbg(hdev, "Incomplete finger report\n"); | |
433 | break; | |
434 | } | |
9fb6bf02 | 435 | |
5b65c2a0 | 436 | rmi_f11_process_touch(hdata, i, finger_state, &data[position]); |
9fb6bf02 BT |
437 | } |
438 | input_mt_sync_frame(hdata->input); | |
439 | input_sync(hdata->input); | |
440 | return hdata->f11.report_size; | |
441 | } | |
442 | ||
443 | static int rmi_f30_input_event(struct hid_device *hdev, u8 irq, u8 *data, | |
444 | int size) | |
445 | { | |
446 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
447 | int i; | |
448 | int button = 0; | |
449 | bool value; | |
450 | ||
451 | if (!(irq & hdata->f30.irq_mask)) | |
452 | return 0; | |
453 | ||
5b65c2a0 BT |
454 | if (size < (int)hdata->f30.report_size) { |
455 | hid_warn(hdev, "Click Button pressed, but the click data is missing\n"); | |
456 | return 0; | |
457 | } | |
458 | ||
9fb6bf02 BT |
459 | for (i = 0; i < hdata->gpio_led_count; i++) { |
460 | if (test_bit(i, &hdata->button_mask)) { | |
461 | value = (data[i / 8] >> (i & 0x07)) & BIT(0); | |
462 | if (test_bit(i, &hdata->button_state_mask)) | |
463 | value = !value; | |
464 | input_event(hdata->input, EV_KEY, BTN_LEFT + button++, | |
465 | value); | |
466 | } | |
467 | } | |
468 | return hdata->f30.report_size; | |
469 | } | |
470 | ||
471 | static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) | |
472 | { | |
473 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
474 | unsigned long irq_mask = 0; | |
475 | unsigned index = 2; | |
476 | ||
477 | if (!(test_bit(RMI_STARTED, &hdata->flags))) | |
478 | return 0; | |
479 | ||
480 | irq_mask |= hdata->f11.irq_mask; | |
481 | irq_mask |= hdata->f30.irq_mask; | |
482 | ||
483 | if (data[1] & ~irq_mask) | |
01a5f8a4 | 484 | hid_dbg(hdev, "unknown intr source:%02lx %s:%d\n", |
9fb6bf02 BT |
485 | data[1] & ~irq_mask, __FILE__, __LINE__); |
486 | ||
487 | if (hdata->f11.interrupt_base < hdata->f30.interrupt_base) { | |
488 | index += rmi_f11_input_event(hdev, data[1], &data[index], | |
489 | size - index); | |
490 | index += rmi_f30_input_event(hdev, data[1], &data[index], | |
491 | size - index); | |
492 | } else { | |
493 | index += rmi_f30_input_event(hdev, data[1], &data[index], | |
494 | size - index); | |
495 | index += rmi_f11_input_event(hdev, data[1], &data[index], | |
496 | size - index); | |
497 | } | |
498 | ||
499 | return 1; | |
500 | } | |
501 | ||
502 | static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size) | |
503 | { | |
504 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
505 | ||
506 | if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) { | |
01a5f8a4 | 507 | hid_dbg(hdev, "no read request pending\n"); |
9fb6bf02 BT |
508 | return 0; |
509 | } | |
510 | ||
511 | memcpy(hdata->readReport, data, size < hdata->input_report_size ? | |
512 | size : hdata->input_report_size); | |
513 | set_bit(RMI_READ_DATA_PENDING, &hdata->flags); | |
514 | wake_up(&hdata->wait); | |
515 | ||
516 | return 1; | |
517 | } | |
518 | ||
5b65c2a0 BT |
519 | static int rmi_check_sanity(struct hid_device *hdev, u8 *data, int size) |
520 | { | |
521 | int valid_size = size; | |
522 | /* | |
523 | * On the Dell XPS 13 9333, the bus sometimes get confused and fills | |
524 | * the report with a sentinel value "ff". Synaptics told us that such | |
525 | * behavior does not comes from the touchpad itself, so we filter out | |
526 | * such reports here. | |
527 | */ | |
528 | ||
529 | while ((data[valid_size - 1] == 0xff) && valid_size > 0) | |
530 | valid_size--; | |
531 | ||
532 | return valid_size; | |
533 | } | |
534 | ||
9fb6bf02 BT |
535 | static int rmi_raw_event(struct hid_device *hdev, |
536 | struct hid_report *report, u8 *data, int size) | |
537 | { | |
5b65c2a0 BT |
538 | size = rmi_check_sanity(hdev, data, size); |
539 | if (size < 2) | |
540 | return 0; | |
541 | ||
9fb6bf02 BT |
542 | switch (data[0]) { |
543 | case RMI_READ_DATA_REPORT_ID: | |
544 | return rmi_read_data_event(hdev, data, size); | |
545 | case RMI_ATTN_REPORT_ID: | |
546 | return rmi_input_event(hdev, data, size); | |
2f43de60 AD |
547 | default: |
548 | return 1; | |
549 | } | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
554 | static int rmi_event(struct hid_device *hdev, struct hid_field *field, | |
555 | struct hid_usage *usage, __s32 value) | |
556 | { | |
557 | struct rmi_data *data = hid_get_drvdata(hdev); | |
558 | ||
559 | if ((data->device_flags & RMI_DEVICE) && | |
560 | (field->application == HID_GD_POINTER || | |
561 | field->application == HID_GD_MOUSE)) { | |
79364d87 AD |
562 | if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) { |
563 | if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) | |
564 | return 0; | |
565 | ||
566 | if ((usage->hid == HID_GD_X || usage->hid == HID_GD_Y) | |
567 | && !value) | |
568 | return 1; | |
569 | } | |
570 | ||
9fb6bf02 | 571 | rmi_schedule_reset(hdev); |
2f43de60 | 572 | return 1; |
9fb6bf02 BT |
573 | } |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
a278e268 | 578 | #ifdef CONFIG_PM |
09256360 AD |
579 | static int rmi_set_sleep_mode(struct hid_device *hdev, int sleep_mode) |
580 | { | |
581 | struct rmi_data *data = hid_get_drvdata(hdev); | |
582 | int ret; | |
583 | u8 f01_ctrl0; | |
584 | ||
585 | f01_ctrl0 = (data->f01_ctrl0 & ~0x3) | sleep_mode; | |
586 | ||
587 | ret = rmi_write(hdev, data->f01.control_base_addr, | |
588 | &f01_ctrl0); | |
589 | if (ret) { | |
590 | hid_err(hdev, "can not write sleep mode\n"); | |
591 | return ret; | |
592 | } | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | static int rmi_suspend(struct hid_device *hdev, pm_message_t message) | |
598 | { | |
7035f3a4 AD |
599 | struct rmi_data *data = hid_get_drvdata(hdev); |
600 | int ret; | |
601 | u8 buf[RMI_F11_CTRL_REG_COUNT]; | |
602 | ||
b786ae8e AD |
603 | if (!(data->device_flags & RMI_DEVICE)) |
604 | return 0; | |
605 | ||
7035f3a4 AD |
606 | ret = rmi_read_block(hdev, data->f11.control_base_addr, buf, |
607 | RMI_F11_CTRL_REG_COUNT); | |
608 | if (ret) | |
609 | hid_warn(hdev, "can not read F11 control registers\n"); | |
610 | else | |
611 | memcpy(data->f11_ctrl_regs, buf, RMI_F11_CTRL_REG_COUNT); | |
612 | ||
613 | ||
09256360 AD |
614 | if (!device_may_wakeup(hdev->dev.parent)) |
615 | return rmi_set_sleep_mode(hdev, RMI_SLEEP_DEEP_SLEEP); | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
9fb6bf02 BT |
620 | static int rmi_post_reset(struct hid_device *hdev) |
621 | { | |
7035f3a4 | 622 | struct rmi_data *data = hid_get_drvdata(hdev); |
09256360 AD |
623 | int ret; |
624 | ||
b786ae8e AD |
625 | if (!(data->device_flags & RMI_DEVICE)) |
626 | return 0; | |
627 | ||
9a98b338 | 628 | ret = rmi_reset_attn_mode(hdev); |
09256360 AD |
629 | if (ret) { |
630 | hid_err(hdev, "can not set rmi mode\n"); | |
631 | return ret; | |
632 | } | |
633 | ||
7035f3a4 AD |
634 | if (data->read_f11_ctrl_regs) { |
635 | ret = rmi_write_block(hdev, data->f11.control_base_addr, | |
636 | data->f11_ctrl_regs, RMI_F11_CTRL_REG_COUNT); | |
637 | if (ret) | |
638 | hid_warn(hdev, | |
639 | "can not write F11 control registers after reset\n"); | |
640 | } | |
641 | ||
09256360 AD |
642 | if (!device_may_wakeup(hdev->dev.parent)) { |
643 | ret = rmi_set_sleep_mode(hdev, RMI_SLEEP_NORMAL); | |
644 | if (ret) { | |
645 | hid_err(hdev, "can not write sleep mode\n"); | |
646 | return ret; | |
647 | } | |
648 | } | |
649 | ||
650 | return ret; | |
9fb6bf02 BT |
651 | } |
652 | ||
653 | static int rmi_post_resume(struct hid_device *hdev) | |
654 | { | |
b786ae8e AD |
655 | struct rmi_data *data = hid_get_drvdata(hdev); |
656 | ||
657 | if (!(data->device_flags & RMI_DEVICE)) | |
658 | return 0; | |
659 | ||
9a98b338 | 660 | return rmi_reset_attn_mode(hdev); |
9fb6bf02 | 661 | } |
a278e268 | 662 | #endif /* CONFIG_PM */ |
9fb6bf02 BT |
663 | |
664 | #define RMI4_MAX_PAGE 0xff | |
665 | #define RMI4_PAGE_SIZE 0x0100 | |
666 | ||
667 | #define PDT_START_SCAN_LOCATION 0x00e9 | |
668 | #define PDT_END_SCAN_LOCATION 0x0005 | |
669 | #define RMI4_END_OF_PDT(id) ((id) == 0x00 || (id) == 0xff) | |
670 | ||
671 | struct pdt_entry { | |
672 | u8 query_base_addr:8; | |
673 | u8 command_base_addr:8; | |
674 | u8 control_base_addr:8; | |
675 | u8 data_base_addr:8; | |
676 | u8 interrupt_source_count:3; | |
677 | u8 bits3and4:2; | |
678 | u8 function_version:2; | |
679 | u8 bit7:1; | |
680 | u8 function_number:8; | |
681 | } __attribute__((__packed__)); | |
682 | ||
683 | static inline unsigned long rmi_gen_mask(unsigned irq_base, unsigned irq_count) | |
684 | { | |
685 | return GENMASK(irq_count + irq_base - 1, irq_base); | |
686 | } | |
687 | ||
688 | static void rmi_register_function(struct rmi_data *data, | |
689 | struct pdt_entry *pdt_entry, int page, unsigned interrupt_count) | |
690 | { | |
691 | struct rmi_function *f = NULL; | |
692 | u16 page_base = page << 8; | |
693 | ||
694 | switch (pdt_entry->function_number) { | |
70e003f7 AD |
695 | case 0x01: |
696 | f = &data->f01; | |
697 | break; | |
9fb6bf02 BT |
698 | case 0x11: |
699 | f = &data->f11; | |
700 | break; | |
701 | case 0x30: | |
702 | f = &data->f30; | |
703 | break; | |
704 | } | |
705 | ||
706 | if (f) { | |
707 | f->page = page; | |
708 | f->query_base_addr = page_base | pdt_entry->query_base_addr; | |
709 | f->command_base_addr = page_base | pdt_entry->command_base_addr; | |
710 | f->control_base_addr = page_base | pdt_entry->control_base_addr; | |
711 | f->data_base_addr = page_base | pdt_entry->data_base_addr; | |
712 | f->interrupt_base = interrupt_count; | |
713 | f->interrupt_count = pdt_entry->interrupt_source_count; | |
714 | f->irq_mask = rmi_gen_mask(f->interrupt_base, | |
715 | f->interrupt_count); | |
9a98b338 | 716 | data->interrupt_enable_mask |= f->irq_mask; |
9fb6bf02 BT |
717 | } |
718 | } | |
719 | ||
720 | static int rmi_scan_pdt(struct hid_device *hdev) | |
721 | { | |
722 | struct rmi_data *data = hid_get_drvdata(hdev); | |
723 | struct pdt_entry entry; | |
724 | int page; | |
725 | bool page_has_function; | |
726 | int i; | |
727 | int retval; | |
728 | int interrupt = 0; | |
729 | u16 page_start, pdt_start , pdt_end; | |
730 | ||
731 | hid_info(hdev, "Scanning PDT...\n"); | |
732 | ||
733 | for (page = 0; (page <= RMI4_MAX_PAGE); page++) { | |
734 | page_start = RMI4_PAGE_SIZE * page; | |
735 | pdt_start = page_start + PDT_START_SCAN_LOCATION; | |
736 | pdt_end = page_start + PDT_END_SCAN_LOCATION; | |
737 | ||
738 | page_has_function = false; | |
739 | for (i = pdt_start; i >= pdt_end; i -= sizeof(entry)) { | |
740 | retval = rmi_read_block(hdev, i, &entry, sizeof(entry)); | |
741 | if (retval) { | |
742 | hid_err(hdev, | |
743 | "Read of PDT entry at %#06x failed.\n", | |
744 | i); | |
745 | goto error_exit; | |
746 | } | |
747 | ||
748 | if (RMI4_END_OF_PDT(entry.function_number)) | |
749 | break; | |
750 | ||
751 | page_has_function = true; | |
752 | ||
753 | hid_info(hdev, "Found F%02X on page %#04x\n", | |
754 | entry.function_number, page); | |
755 | ||
756 | rmi_register_function(data, &entry, page, interrupt); | |
757 | interrupt += entry.interrupt_source_count; | |
758 | } | |
759 | ||
760 | if (!page_has_function) | |
761 | break; | |
762 | } | |
763 | ||
764 | hid_info(hdev, "%s: Done with PDT scan.\n", __func__); | |
765 | retval = 0; | |
766 | ||
767 | error_exit: | |
768 | return retval; | |
769 | } | |
770 | ||
70e003f7 AD |
771 | #define RMI_DEVICE_F01_BASIC_QUERY_LEN 11 |
772 | ||
773 | static int rmi_populate_f01(struct hid_device *hdev) | |
774 | { | |
775 | struct rmi_data *data = hid_get_drvdata(hdev); | |
776 | u8 basic_queries[RMI_DEVICE_F01_BASIC_QUERY_LEN]; | |
777 | u8 info[3]; | |
778 | int ret; | |
779 | bool has_query42; | |
780 | bool has_lts; | |
781 | bool has_sensor_id; | |
782 | bool has_ds4_queries = false; | |
783 | bool has_build_id_query = false; | |
784 | bool has_package_id_query = false; | |
785 | u16 query_offset = data->f01.query_base_addr; | |
786 | u16 prod_info_addr; | |
787 | u8 ds4_query_len; | |
788 | ||
789 | ret = rmi_read_block(hdev, query_offset, basic_queries, | |
790 | RMI_DEVICE_F01_BASIC_QUERY_LEN); | |
791 | if (ret) { | |
792 | hid_err(hdev, "Can not read basic queries from Function 0x1.\n"); | |
793 | return ret; | |
794 | } | |
795 | ||
796 | has_lts = !!(basic_queries[0] & BIT(2)); | |
797 | has_sensor_id = !!(basic_queries[1] & BIT(3)); | |
798 | has_query42 = !!(basic_queries[1] & BIT(7)); | |
799 | ||
800 | query_offset += 11; | |
801 | prod_info_addr = query_offset + 6; | |
802 | query_offset += 10; | |
803 | ||
804 | if (has_lts) | |
805 | query_offset += 20; | |
806 | ||
807 | if (has_sensor_id) | |
808 | query_offset++; | |
809 | ||
810 | if (has_query42) { | |
811 | ret = rmi_read(hdev, query_offset, info); | |
812 | if (ret) { | |
813 | hid_err(hdev, "Can not read query42.\n"); | |
814 | return ret; | |
815 | } | |
816 | has_ds4_queries = !!(info[0] & BIT(0)); | |
817 | query_offset++; | |
818 | } | |
819 | ||
820 | if (has_ds4_queries) { | |
821 | ret = rmi_read(hdev, query_offset, &ds4_query_len); | |
822 | if (ret) { | |
823 | hid_err(hdev, "Can not read DS4 Query length.\n"); | |
824 | return ret; | |
825 | } | |
826 | query_offset++; | |
827 | ||
828 | if (ds4_query_len > 0) { | |
829 | ret = rmi_read(hdev, query_offset, info); | |
830 | if (ret) { | |
831 | hid_err(hdev, "Can not read DS4 query.\n"); | |
832 | return ret; | |
833 | } | |
834 | ||
835 | has_package_id_query = !!(info[0] & BIT(0)); | |
836 | has_build_id_query = !!(info[0] & BIT(1)); | |
837 | } | |
838 | } | |
839 | ||
840 | if (has_package_id_query) | |
841 | prod_info_addr++; | |
842 | ||
843 | if (has_build_id_query) { | |
844 | ret = rmi_read_block(hdev, prod_info_addr, info, 3); | |
845 | if (ret) { | |
846 | hid_err(hdev, "Can not read product info.\n"); | |
847 | return ret; | |
848 | } | |
849 | ||
850 | data->firmware_id = info[1] << 8 | info[0]; | |
851 | data->firmware_id += info[2] * 65536; | |
852 | } | |
853 | ||
9a98b338 AD |
854 | ret = rmi_read_block(hdev, data->f01.control_base_addr, info, |
855 | 2); | |
09256360 AD |
856 | |
857 | if (ret) { | |
9a98b338 | 858 | hid_err(hdev, "can not read f01 ctrl registers\n"); |
09256360 AD |
859 | return ret; |
860 | } | |
9a98b338 AD |
861 | |
862 | data->f01_ctrl0 = info[0]; | |
863 | ||
864 | if (!info[1]) { | |
865 | /* | |
866 | * Do to a firmware bug in some touchpads the F01 interrupt | |
867 | * enable control register will be cleared on reset. | |
868 | * This will stop the touchpad from reporting data, so | |
869 | * if F01 CTRL1 is 0 then we need to explicitly enable | |
870 | * interrupts for the functions we want data for. | |
871 | */ | |
872 | data->restore_interrupt_mask = true; | |
873 | ||
874 | ret = rmi_write(hdev, data->f01.control_base_addr + 1, | |
875 | &data->interrupt_enable_mask); | |
876 | if (ret) { | |
877 | hid_err(hdev, "can not write to control reg 1: %d.\n", | |
878 | ret); | |
879 | return ret; | |
880 | } | |
881 | } | |
882 | ||
70e003f7 AD |
883 | return 0; |
884 | } | |
885 | ||
9fb6bf02 BT |
886 | static int rmi_populate_f11(struct hid_device *hdev) |
887 | { | |
888 | struct rmi_data *data = hid_get_drvdata(hdev); | |
889 | u8 buf[20]; | |
890 | int ret; | |
f15475c3 | 891 | bool has_query9; |
9e2c327e | 892 | bool has_query10 = false; |
f15475c3 | 893 | bool has_query11; |
9fb6bf02 | 894 | bool has_query12; |
8414947a AD |
895 | bool has_query27; |
896 | bool has_query28; | |
897 | bool has_query36 = false; | |
9fb6bf02 | 898 | bool has_physical_props; |
9e2c327e AD |
899 | bool has_gestures; |
900 | bool has_rel; | |
8414947a | 901 | bool has_data40 = false; |
05ba999f | 902 | bool has_dribble = false; |
f097deef | 903 | bool has_palm_detect = false; |
9fb6bf02 | 904 | unsigned x_size, y_size; |
8414947a | 905 | u16 query_offset; |
9fb6bf02 BT |
906 | |
907 | if (!data->f11.query_base_addr) { | |
908 | hid_err(hdev, "No 2D sensor found, giving up.\n"); | |
909 | return -ENODEV; | |
910 | } | |
911 | ||
912 | /* query 0 contains some useful information */ | |
913 | ret = rmi_read(hdev, data->f11.query_base_addr, buf); | |
914 | if (ret) { | |
915 | hid_err(hdev, "can not get query 0: %d.\n", ret); | |
916 | return ret; | |
917 | } | |
f15475c3 AD |
918 | has_query9 = !!(buf[0] & BIT(3)); |
919 | has_query11 = !!(buf[0] & BIT(4)); | |
9fb6bf02 | 920 | has_query12 = !!(buf[0] & BIT(5)); |
8414947a AD |
921 | has_query27 = !!(buf[0] & BIT(6)); |
922 | has_query28 = !!(buf[0] & BIT(7)); | |
9fb6bf02 BT |
923 | |
924 | /* query 1 to get the max number of fingers */ | |
925 | ret = rmi_read(hdev, data->f11.query_base_addr + 1, buf); | |
926 | if (ret) { | |
927 | hid_err(hdev, "can not get NumberOfFingers: %d.\n", ret); | |
928 | return ret; | |
929 | } | |
930 | data->max_fingers = (buf[0] & 0x07) + 1; | |
931 | if (data->max_fingers > 5) | |
932 | data->max_fingers = 10; | |
933 | ||
934 | data->f11.report_size = data->max_fingers * 5 + | |
935 | DIV_ROUND_UP(data->max_fingers, 4); | |
936 | ||
937 | if (!(buf[0] & BIT(4))) { | |
938 | hid_err(hdev, "No absolute events, giving up.\n"); | |
939 | return -ENODEV; | |
940 | } | |
941 | ||
9e2c327e AD |
942 | has_rel = !!(buf[0] & BIT(3)); |
943 | has_gestures = !!(buf[0] & BIT(5)); | |
944 | ||
05ba999f AD |
945 | ret = rmi_read(hdev, data->f11.query_base_addr + 5, buf); |
946 | if (ret) { | |
947 | hid_err(hdev, "can not get absolute data sources: %d.\n", ret); | |
948 | return ret; | |
949 | } | |
950 | ||
951 | has_dribble = !!(buf[0] & BIT(4)); | |
952 | ||
9fb6bf02 | 953 | /* |
9e2c327e AD |
954 | * At least 4 queries are guaranteed to be present in F11 |
955 | * +1 for query 5 which is present since absolute events are | |
956 | * reported and +1 for query 12. | |
9fb6bf02 | 957 | */ |
8414947a | 958 | query_offset = 6; |
9e2c327e AD |
959 | |
960 | if (has_rel) | |
8414947a | 961 | ++query_offset; /* query 6 is present */ |
9e2c327e | 962 | |
cabd9b5f AD |
963 | if (has_gestures) { |
964 | /* query 8 to find out if query 10 exists */ | |
965 | ret = rmi_read(hdev, | |
966 | data->f11.query_base_addr + query_offset + 1, buf); | |
967 | if (ret) { | |
968 | hid_err(hdev, "can not read gesture information: %d.\n", | |
969 | ret); | |
970 | return ret; | |
971 | } | |
f097deef | 972 | has_palm_detect = !!(buf[0] & BIT(0)); |
cabd9b5f AD |
973 | has_query10 = !!(buf[0] & BIT(2)); |
974 | ||
8414947a | 975 | query_offset += 2; /* query 7 and 8 are present */ |
cabd9b5f | 976 | } |
f15475c3 AD |
977 | |
978 | if (has_query9) | |
8414947a | 979 | ++query_offset; |
f15475c3 AD |
980 | |
981 | if (has_query10) | |
8414947a | 982 | ++query_offset; |
f15475c3 AD |
983 | |
984 | if (has_query11) | |
8414947a | 985 | ++query_offset; |
f15475c3 AD |
986 | |
987 | /* query 12 to know if the physical properties are reported */ | |
9fb6bf02 | 988 | if (has_query12) { |
f15475c3 | 989 | ret = rmi_read(hdev, data->f11.query_base_addr |
8414947a | 990 | + query_offset, buf); |
9fb6bf02 BT |
991 | if (ret) { |
992 | hid_err(hdev, "can not get query 12: %d.\n", ret); | |
993 | return ret; | |
994 | } | |
995 | has_physical_props = !!(buf[0] & BIT(5)); | |
996 | ||
997 | if (has_physical_props) { | |
8414947a | 998 | query_offset += 1; |
9fb6bf02 | 999 | ret = rmi_read_block(hdev, |
f15475c3 | 1000 | data->f11.query_base_addr |
8414947a | 1001 | + query_offset, buf, 4); |
9fb6bf02 BT |
1002 | if (ret) { |
1003 | hid_err(hdev, "can not read query 15-18: %d.\n", | |
1004 | ret); | |
1005 | return ret; | |
1006 | } | |
1007 | ||
1008 | x_size = buf[0] | (buf[1] << 8); | |
1009 | y_size = buf[2] | (buf[3] << 8); | |
1010 | ||
1011 | data->x_size_mm = DIV_ROUND_CLOSEST(x_size, 10); | |
1012 | data->y_size_mm = DIV_ROUND_CLOSEST(y_size, 10); | |
1013 | ||
1014 | hid_info(hdev, "%s: size in mm: %d x %d\n", | |
1015 | __func__, data->x_size_mm, data->y_size_mm); | |
8414947a AD |
1016 | |
1017 | /* | |
1018 | * query 15 - 18 contain the size of the sensor | |
1019 | * and query 19 - 26 contain bezel dimensions | |
1020 | */ | |
1021 | query_offset += 12; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | if (has_query27) | |
1026 | ++query_offset; | |
1027 | ||
1028 | if (has_query28) { | |
1029 | ret = rmi_read(hdev, data->f11.query_base_addr | |
1030 | + query_offset, buf); | |
1031 | if (ret) { | |
1032 | hid_err(hdev, "can not get query 28: %d.\n", ret); | |
1033 | return ret; | |
1034 | } | |
1035 | ||
1036 | has_query36 = !!(buf[0] & BIT(6)); | |
1037 | } | |
1038 | ||
1039 | if (has_query36) { | |
1040 | query_offset += 2; | |
1041 | ret = rmi_read(hdev, data->f11.query_base_addr | |
1042 | + query_offset, buf); | |
1043 | if (ret) { | |
1044 | hid_err(hdev, "can not get query 36: %d.\n", ret); | |
1045 | return ret; | |
9fb6bf02 | 1046 | } |
8414947a AD |
1047 | |
1048 | has_data40 = !!(buf[0] & BIT(5)); | |
9fb6bf02 BT |
1049 | } |
1050 | ||
8414947a AD |
1051 | |
1052 | if (has_data40) | |
1053 | data->f11.report_size += data->max_fingers * 2; | |
1054 | ||
7035f3a4 AD |
1055 | ret = rmi_read_block(hdev, data->f11.control_base_addr, |
1056 | data->f11_ctrl_regs, RMI_F11_CTRL_REG_COUNT); | |
9fb6bf02 | 1057 | if (ret) { |
f097deef | 1058 | hid_err(hdev, "can not read ctrl block of size 11: %d.\n", ret); |
9fb6bf02 BT |
1059 | return ret; |
1060 | } | |
1061 | ||
7035f3a4 AD |
1062 | /* data->f11_ctrl_regs now contains valid register data */ |
1063 | data->read_f11_ctrl_regs = true; | |
1064 | ||
1065 | data->max_x = data->f11_ctrl_regs[6] | (data->f11_ctrl_regs[7] << 8); | |
1066 | data->max_y = data->f11_ctrl_regs[8] | (data->f11_ctrl_regs[9] << 8); | |
9fb6bf02 | 1067 | |
05ba999f | 1068 | if (has_dribble) { |
7035f3a4 AD |
1069 | data->f11_ctrl_regs[0] = data->f11_ctrl_regs[0] & ~BIT(6); |
1070 | ret = rmi_write(hdev, data->f11.control_base_addr, | |
1071 | data->f11_ctrl_regs); | |
05ba999f AD |
1072 | if (ret) { |
1073 | hid_err(hdev, "can not write to control reg 0: %d.\n", | |
1074 | ret); | |
1075 | return ret; | |
1076 | } | |
1077 | } | |
1078 | ||
f097deef | 1079 | if (has_palm_detect) { |
7035f3a4 | 1080 | data->f11_ctrl_regs[11] = data->f11_ctrl_regs[11] & ~BIT(0); |
f097deef | 1081 | ret = rmi_write(hdev, data->f11.control_base_addr + 11, |
7035f3a4 | 1082 | &data->f11_ctrl_regs[11]); |
f097deef AD |
1083 | if (ret) { |
1084 | hid_err(hdev, "can not write to control reg 11: %d.\n", | |
1085 | ret); | |
1086 | return ret; | |
1087 | } | |
1088 | } | |
1089 | ||
9fb6bf02 BT |
1090 | return 0; |
1091 | } | |
1092 | ||
1093 | static int rmi_populate_f30(struct hid_device *hdev) | |
1094 | { | |
1095 | struct rmi_data *data = hid_get_drvdata(hdev); | |
1096 | u8 buf[20]; | |
1097 | int ret; | |
1098 | bool has_gpio, has_led; | |
1099 | unsigned bytes_per_ctrl; | |
1100 | u8 ctrl2_addr; | |
1101 | int ctrl2_3_length; | |
1102 | int i; | |
1103 | ||
1104 | /* function F30 is for physical buttons */ | |
1105 | if (!data->f30.query_base_addr) { | |
1106 | hid_err(hdev, "No GPIO/LEDs found, giving up.\n"); | |
1107 | return -ENODEV; | |
1108 | } | |
1109 | ||
1110 | ret = rmi_read_block(hdev, data->f30.query_base_addr, buf, 2); | |
1111 | if (ret) { | |
1112 | hid_err(hdev, "can not get F30 query registers: %d.\n", ret); | |
1113 | return ret; | |
1114 | } | |
1115 | ||
1116 | has_gpio = !!(buf[0] & BIT(3)); | |
1117 | has_led = !!(buf[0] & BIT(2)); | |
1118 | data->gpio_led_count = buf[1] & 0x1f; | |
1119 | ||
1120 | /* retrieve ctrl 2 & 3 registers */ | |
1121 | bytes_per_ctrl = (data->gpio_led_count + 7) / 8; | |
1122 | /* Ctrl0 is present only if both has_gpio and has_led are set*/ | |
1123 | ctrl2_addr = (has_gpio && has_led) ? bytes_per_ctrl : 0; | |
1124 | /* Ctrl1 is always be present */ | |
1125 | ctrl2_addr += bytes_per_ctrl; | |
1126 | ctrl2_3_length = 2 * bytes_per_ctrl; | |
1127 | ||
1128 | data->f30.report_size = bytes_per_ctrl; | |
1129 | ||
1130 | ret = rmi_read_block(hdev, data->f30.control_base_addr + ctrl2_addr, | |
1131 | buf, ctrl2_3_length); | |
1132 | if (ret) { | |
1133 | hid_err(hdev, "can not read ctrl 2&3 block of size %d: %d.\n", | |
1134 | ctrl2_3_length, ret); | |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | for (i = 0; i < data->gpio_led_count; i++) { | |
1139 | int byte_position = i >> 3; | |
1140 | int bit_position = i & 0x07; | |
1141 | u8 dir_byte = buf[byte_position]; | |
1142 | u8 data_byte = buf[byte_position + bytes_per_ctrl]; | |
1143 | bool dir = (dir_byte >> bit_position) & BIT(0); | |
1144 | bool dat = (data_byte >> bit_position) & BIT(0); | |
1145 | ||
1146 | if (dir == 0) { | |
1147 | /* input mode */ | |
1148 | if (dat) { | |
1149 | /* actual buttons have pull up resistor */ | |
1150 | data->button_count++; | |
1151 | set_bit(i, &data->button_mask); | |
1152 | set_bit(i, &data->button_state_mask); | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | } | |
1157 | ||
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | static int rmi_populate(struct hid_device *hdev) | |
1162 | { | |
10e87dc4 | 1163 | struct rmi_data *data = hid_get_drvdata(hdev); |
9fb6bf02 BT |
1164 | int ret; |
1165 | ||
1166 | ret = rmi_scan_pdt(hdev); | |
1167 | if (ret) { | |
1168 | hid_err(hdev, "PDT scan failed with code %d.\n", ret); | |
1169 | return ret; | |
1170 | } | |
1171 | ||
70e003f7 AD |
1172 | ret = rmi_populate_f01(hdev); |
1173 | if (ret) { | |
1174 | hid_err(hdev, "Error while initializing F01 (%d).\n", ret); | |
1175 | return ret; | |
1176 | } | |
1177 | ||
9fb6bf02 BT |
1178 | ret = rmi_populate_f11(hdev); |
1179 | if (ret) { | |
1180 | hid_err(hdev, "Error while initializing F11 (%d).\n", ret); | |
1181 | return ret; | |
1182 | } | |
1183 | ||
10e87dc4 AD |
1184 | if (!(data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)) { |
1185 | ret = rmi_populate_f30(hdev); | |
1186 | if (ret) | |
1187 | hid_warn(hdev, "Error while initializing F30 (%d).\n", ret); | |
1188 | } | |
9fb6bf02 BT |
1189 | |
1190 | return 0; | |
1191 | } | |
1192 | ||
9154301a | 1193 | static int rmi_input_configured(struct hid_device *hdev, struct hid_input *hi) |
9fb6bf02 BT |
1194 | { |
1195 | struct rmi_data *data = hid_get_drvdata(hdev); | |
1196 | struct input_dev *input = hi->input; | |
1197 | int ret; | |
1198 | int res_x, res_y, i; | |
1199 | ||
1200 | data->input = input; | |
1201 | ||
1202 | hid_dbg(hdev, "Opening low level driver\n"); | |
1203 | ret = hid_hw_open(hdev); | |
1204 | if (ret) | |
9154301a | 1205 | return ret; |
9fb6bf02 | 1206 | |
2f43de60 | 1207 | if (!(data->device_flags & RMI_DEVICE)) |
9154301a | 1208 | return 0; |
2f43de60 | 1209 | |
9fb6bf02 BT |
1210 | /* Allow incoming hid reports */ |
1211 | hid_device_io_start(hdev); | |
1212 | ||
1213 | ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); | |
1214 | if (ret < 0) { | |
1215 | dev_err(&hdev->dev, "failed to set rmi mode\n"); | |
1216 | goto exit; | |
1217 | } | |
1218 | ||
1219 | ret = rmi_set_page(hdev, 0); | |
1220 | if (ret < 0) { | |
1221 | dev_err(&hdev->dev, "failed to set page select to 0.\n"); | |
1222 | goto exit; | |
1223 | } | |
1224 | ||
1225 | ret = rmi_populate(hdev); | |
1226 | if (ret) | |
1227 | goto exit; | |
1228 | ||
70e003f7 AD |
1229 | hid_info(hdev, "firmware id: %ld\n", data->firmware_id); |
1230 | ||
9fb6bf02 BT |
1231 | __set_bit(EV_ABS, input->evbit); |
1232 | input_set_abs_params(input, ABS_MT_POSITION_X, 1, data->max_x, 0, 0); | |
1233 | input_set_abs_params(input, ABS_MT_POSITION_Y, 1, data->max_y, 0, 0); | |
1234 | ||
b668fdce | 1235 | if (data->x_size_mm && data->y_size_mm) { |
9fb6bf02 | 1236 | res_x = (data->max_x - 1) / data->x_size_mm; |
b668fdce | 1237 | res_y = (data->max_y - 1) / data->y_size_mm; |
9fb6bf02 BT |
1238 | |
1239 | input_abs_set_res(input, ABS_MT_POSITION_X, res_x); | |
1240 | input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); | |
1241 | } | |
1242 | ||
1243 | input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0); | |
1244 | input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0); | |
1245 | input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0); | |
1246 | input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0); | |
1247 | ||
9154301a DT |
1248 | ret = input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); |
1249 | if (ret < 0) | |
1250 | goto exit; | |
9fb6bf02 BT |
1251 | |
1252 | if (data->button_count) { | |
1253 | __set_bit(EV_KEY, input->evbit); | |
1254 | for (i = 0; i < data->button_count; i++) | |
1255 | __set_bit(BTN_LEFT + i, input->keybit); | |
1256 | ||
1257 | if (data->button_count == 1) | |
1258 | __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); | |
1259 | } | |
1260 | ||
1261 | set_bit(RMI_STARTED, &data->flags); | |
1262 | ||
1263 | exit: | |
1264 | hid_device_io_stop(hdev); | |
1265 | hid_hw_close(hdev); | |
9154301a | 1266 | return ret; |
9fb6bf02 BT |
1267 | } |
1268 | ||
1269 | static int rmi_input_mapping(struct hid_device *hdev, | |
1270 | struct hid_input *hi, struct hid_field *field, | |
1271 | struct hid_usage *usage, unsigned long **bit, int *max) | |
1272 | { | |
2f43de60 AD |
1273 | struct rmi_data *data = hid_get_drvdata(hdev); |
1274 | ||
1275 | /* | |
1276 | * we want to make HID ignore the advertised HID collection | |
1277 | * for RMI deivces | |
1278 | */ | |
79364d87 AD |
1279 | if (data->device_flags & RMI_DEVICE) { |
1280 | if ((data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) && | |
1281 | ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)) | |
1282 | return 0; | |
1283 | ||
2f43de60 | 1284 | return -1; |
79364d87 | 1285 | } |
2f43de60 AD |
1286 | |
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | static int rmi_check_valid_report_id(struct hid_device *hdev, unsigned type, | |
1291 | unsigned id, struct hid_report **report) | |
1292 | { | |
1293 | int i; | |
1294 | ||
1295 | *report = hdev->report_enum[type].report_id_hash[id]; | |
1296 | if (*report) { | |
1297 | for (i = 0; i < (*report)->maxfield; i++) { | |
1298 | unsigned app = (*report)->field[i]->application; | |
1299 | if ((app & HID_USAGE_PAGE) >= HID_UP_MSVENDOR) | |
1300 | return 1; | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | return 0; | |
9fb6bf02 BT |
1305 | } |
1306 | ||
1307 | static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
1308 | { | |
1309 | struct rmi_data *data = NULL; | |
1310 | int ret; | |
1311 | size_t alloc_size; | |
dd3edeb6 AD |
1312 | struct hid_report *input_report; |
1313 | struct hid_report *output_report; | |
2f43de60 | 1314 | struct hid_report *feature_report; |
9fb6bf02 BT |
1315 | |
1316 | data = devm_kzalloc(&hdev->dev, sizeof(struct rmi_data), GFP_KERNEL); | |
1317 | if (!data) | |
1318 | return -ENOMEM; | |
1319 | ||
1320 | INIT_WORK(&data->reset_work, rmi_reset_work); | |
1321 | data->hdev = hdev; | |
1322 | ||
1323 | hid_set_drvdata(hdev, data); | |
1324 | ||
1325 | hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; | |
1326 | ||
1327 | ret = hid_parse(hdev); | |
1328 | if (ret) { | |
1329 | hid_err(hdev, "parse failed\n"); | |
1330 | return ret; | |
1331 | } | |
1332 | ||
79364d87 AD |
1333 | if (id->driver_data) |
1334 | data->device_flags = id->driver_data; | |
1335 | ||
2f43de60 AD |
1336 | /* |
1337 | * Check for the RMI specific report ids. If they are misisng | |
1338 | * simply return and let the events be processed by hid-input | |
1339 | */ | |
1340 | if (!rmi_check_valid_report_id(hdev, HID_FEATURE_REPORT, | |
1341 | RMI_SET_RMI_MODE_REPORT_ID, &feature_report)) { | |
1342 | hid_dbg(hdev, "device does not have set mode feature report\n"); | |
1343 | goto start; | |
1344 | } | |
1345 | ||
1346 | if (!rmi_check_valid_report_id(hdev, HID_INPUT_REPORT, | |
1347 | RMI_ATTN_REPORT_ID, &input_report)) { | |
1348 | hid_dbg(hdev, "device does not have attention input report\n"); | |
1349 | goto start; | |
dd3edeb6 AD |
1350 | } |
1351 | ||
b8aed6ea | 1352 | data->input_report_size = hid_report_len(input_report); |
dd3edeb6 | 1353 | |
2f43de60 AD |
1354 | if (!rmi_check_valid_report_id(hdev, HID_OUTPUT_REPORT, |
1355 | RMI_WRITE_REPORT_ID, &output_report)) { | |
1356 | hid_dbg(hdev, | |
1357 | "device does not have rmi write output report\n"); | |
1358 | goto start; | |
dd3edeb6 AD |
1359 | } |
1360 | ||
b8aed6ea | 1361 | data->output_report_size = hid_report_len(output_report); |
9fb6bf02 | 1362 | |
2f43de60 | 1363 | data->device_flags |= RMI_DEVICE; |
9fb6bf02 BT |
1364 | alloc_size = data->output_report_size + data->input_report_size; |
1365 | ||
1366 | data->writeReport = devm_kzalloc(&hdev->dev, alloc_size, GFP_KERNEL); | |
1367 | if (!data->writeReport) { | |
1368 | ret = -ENOMEM; | |
1369 | return ret; | |
1370 | } | |
1371 | ||
1372 | data->readReport = data->writeReport + data->output_report_size; | |
1373 | ||
1374 | init_waitqueue_head(&data->wait); | |
1375 | ||
1376 | mutex_init(&data->page_mutex); | |
1377 | ||
2f43de60 | 1378 | start: |
9fb6bf02 BT |
1379 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
1380 | if (ret) { | |
1381 | hid_err(hdev, "hw start failed\n"); | |
1382 | return ret; | |
1383 | } | |
1384 | ||
2f43de60 AD |
1385 | if ((data->device_flags & RMI_DEVICE) && |
1386 | !test_bit(RMI_STARTED, &data->flags)) | |
daebdd7e AD |
1387 | /* |
1388 | * The device maybe in the bootloader if rmi_input_configured | |
1389 | * failed to find F11 in the PDT. Print an error, but don't | |
1390 | * return an error from rmi_probe so that hidraw will be | |
1391 | * accessible from userspace. That way a userspace tool | |
1392 | * can be used to reload working firmware on the touchpad. | |
1393 | */ | |
1394 | hid_err(hdev, "Device failed to be properly configured\n"); | |
9fb6bf02 | 1395 | |
9fb6bf02 BT |
1396 | return 0; |
1397 | } | |
1398 | ||
1399 | static void rmi_remove(struct hid_device *hdev) | |
1400 | { | |
1401 | struct rmi_data *hdata = hid_get_drvdata(hdev); | |
1402 | ||
1403 | clear_bit(RMI_STARTED, &hdata->flags); | |
1404 | ||
1405 | hid_hw_stop(hdev); | |
1406 | } | |
1407 | ||
1408 | static const struct hid_device_id rmi_id[] = { | |
e9287099 AD |
1409 | { HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14), |
1410 | .driver_data = RMI_DEVICE_HAS_PHYS_BUTTONS }, | |
ba391e5a | 1411 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_RMI, HID_ANY_ID, HID_ANY_ID) }, |
9fb6bf02 BT |
1412 | { } |
1413 | }; | |
1414 | MODULE_DEVICE_TABLE(hid, rmi_id); | |
1415 | ||
1416 | static struct hid_driver rmi_driver = { | |
1417 | .name = "hid-rmi", | |
1418 | .id_table = rmi_id, | |
1419 | .probe = rmi_probe, | |
1420 | .remove = rmi_remove, | |
2f43de60 | 1421 | .event = rmi_event, |
9fb6bf02 BT |
1422 | .raw_event = rmi_raw_event, |
1423 | .input_mapping = rmi_input_mapping, | |
1424 | .input_configured = rmi_input_configured, | |
1425 | #ifdef CONFIG_PM | |
09256360 | 1426 | .suspend = rmi_suspend, |
9fb6bf02 BT |
1427 | .resume = rmi_post_resume, |
1428 | .reset_resume = rmi_post_reset, | |
1429 | #endif | |
1430 | }; | |
1431 | ||
1432 | module_hid_driver(rmi_driver); | |
1433 | ||
1434 | MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>"); | |
1435 | MODULE_DESCRIPTION("RMI HID driver"); | |
1436 | MODULE_LICENSE("GPL"); |