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3a027538 HG |
1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* | |
3 | * HID driver for gaming keys on Logitech gaming keyboards (such as the G15) | |
4 | * | |
5 | * Copyright (c) 2019 Hans de Goede <hdegoede@redhat.com> | |
6 | */ | |
7 | ||
8 | #include <linux/device.h> | |
9 | #include <linux/hid.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/random.h> | |
12 | #include <linux/sched.h> | |
13 | #include <linux/usb.h> | |
14 | #include <linux/wait.h> | |
15 | ||
16 | #include "hid-ids.h" | |
17 | ||
18 | #define LG_G15_TRANSFER_BUF_SIZE 20 | |
19 | ||
97b741ab HG |
20 | #define LG_G15_FEATURE_REPORT 0x02 |
21 | ||
1f8cde2a HG |
22 | #define LG_G510_FEATURE_M_KEYS_LEDS 0x04 |
23 | #define LG_G510_FEATURE_BACKLIGHT_RGB 0x05 | |
24 | #define LG_G510_FEATURE_POWER_ON_RGB 0x06 | |
25 | ||
3a027538 HG |
26 | enum lg_g15_model { |
27 | LG_G15, | |
28 | LG_G15_V2, | |
ad4203f5 HG |
29 | LG_G510, |
30 | LG_G510_USB_AUDIO, | |
3a027538 HG |
31 | }; |
32 | ||
97b741ab HG |
33 | enum lg_g15_led_type { |
34 | LG_G15_KBD_BRIGHTNESS, | |
35 | LG_G15_LCD_BRIGHTNESS, | |
36 | LG_G15_BRIGHTNESS_MAX, | |
d5b5fc8c HG |
37 | LG_G15_MACRO_PRESET1 = 2, |
38 | LG_G15_MACRO_PRESET2, | |
39 | LG_G15_MACRO_PRESET3, | |
40 | LG_G15_MACRO_RECORD, | |
41 | LG_G15_LED_MAX | |
97b741ab HG |
42 | }; |
43 | ||
44 | struct lg_g15_led { | |
45 | struct led_classdev cdev; | |
46 | enum led_brightness brightness; | |
47 | enum lg_g15_led_type led; | |
1f8cde2a | 48 | u8 red, green, blue; |
97b741ab HG |
49 | }; |
50 | ||
3a027538 HG |
51 | struct lg_g15_data { |
52 | /* Must be first for proper dma alignment */ | |
53 | u8 transfer_buf[LG_G15_TRANSFER_BUF_SIZE]; | |
97b741ab HG |
54 | /* Protects the transfer_buf and led brightness */ |
55 | struct mutex mutex; | |
56 | struct work_struct work; | |
3a027538 HG |
57 | struct input_dev *input; |
58 | struct hid_device *hdev; | |
59 | enum lg_g15_model model; | |
d5b5fc8c | 60 | struct lg_g15_led leds[LG_G15_LED_MAX]; |
ad4203f5 | 61 | bool game_mode_enabled; |
3a027538 HG |
62 | }; |
63 | ||
1f8cde2a HG |
64 | /******** G15 and G15 v2 LED functions ********/ |
65 | ||
97b741ab HG |
66 | static int lg_g15_update_led_brightness(struct lg_g15_data *g15) |
67 | { | |
68 | int ret; | |
69 | ||
70 | ret = hid_hw_raw_request(g15->hdev, LG_G15_FEATURE_REPORT, | |
71 | g15->transfer_buf, 4, | |
72 | HID_FEATURE_REPORT, HID_REQ_GET_REPORT); | |
73 | if (ret != 4) { | |
74 | hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret); | |
75 | return (ret < 0) ? ret : -EIO; | |
76 | } | |
77 | ||
78 | g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = g15->transfer_buf[1]; | |
79 | g15->leds[LG_G15_LCD_BRIGHTNESS].brightness = g15->transfer_buf[2]; | |
d5b5fc8c HG |
80 | |
81 | g15->leds[LG_G15_MACRO_PRESET1].brightness = | |
82 | !(g15->transfer_buf[3] & 0x01); | |
83 | g15->leds[LG_G15_MACRO_PRESET2].brightness = | |
84 | !(g15->transfer_buf[3] & 0x02); | |
85 | g15->leds[LG_G15_MACRO_PRESET3].brightness = | |
86 | !(g15->transfer_buf[3] & 0x04); | |
87 | g15->leds[LG_G15_MACRO_RECORD].brightness = | |
88 | !(g15->transfer_buf[3] & 0x08); | |
89 | ||
97b741ab HG |
90 | return 0; |
91 | } | |
92 | ||
93 | static enum led_brightness lg_g15_led_get(struct led_classdev *led_cdev) | |
94 | { | |
95 | struct lg_g15_led *g15_led = | |
96 | container_of(led_cdev, struct lg_g15_led, cdev); | |
97 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
98 | enum led_brightness brightness; | |
99 | ||
100 | mutex_lock(&g15->mutex); | |
101 | lg_g15_update_led_brightness(g15); | |
102 | brightness = g15->leds[g15_led->led].brightness; | |
103 | mutex_unlock(&g15->mutex); | |
104 | ||
105 | return brightness; | |
106 | } | |
107 | ||
108 | static int lg_g15_led_set(struct led_classdev *led_cdev, | |
109 | enum led_brightness brightness) | |
110 | { | |
111 | struct lg_g15_led *g15_led = | |
112 | container_of(led_cdev, struct lg_g15_led, cdev); | |
113 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
d5b5fc8c HG |
114 | u8 val, mask = 0; |
115 | int i, ret; | |
97b741ab HG |
116 | |
117 | /* Ignore LED off on unregister / keyboard unplug */ | |
118 | if (led_cdev->flags & LED_UNREGISTERING) | |
119 | return 0; | |
120 | ||
121 | mutex_lock(&g15->mutex); | |
122 | ||
123 | g15->transfer_buf[0] = LG_G15_FEATURE_REPORT; | |
97b741ab HG |
124 | g15->transfer_buf[3] = 0; |
125 | ||
d5b5fc8c HG |
126 | if (g15_led->led < LG_G15_BRIGHTNESS_MAX) { |
127 | g15->transfer_buf[1] = g15_led->led + 1; | |
128 | g15->transfer_buf[2] = brightness << (g15_led->led * 4); | |
129 | } else { | |
130 | for (i = LG_G15_MACRO_PRESET1; i < LG_G15_LED_MAX; i++) { | |
131 | if (i == g15_led->led) | |
132 | val = brightness; | |
133 | else | |
134 | val = g15->leds[i].brightness; | |
135 | ||
136 | if (val) | |
137 | mask |= 1 << (i - LG_G15_MACRO_PRESET1); | |
138 | } | |
139 | ||
140 | g15->transfer_buf[1] = 0x04; | |
141 | g15->transfer_buf[2] = ~mask; | |
142 | } | |
143 | ||
97b741ab HG |
144 | ret = hid_hw_raw_request(g15->hdev, LG_G15_FEATURE_REPORT, |
145 | g15->transfer_buf, 4, | |
146 | HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
147 | if (ret == 4) { | |
148 | /* Success */ | |
149 | g15_led->brightness = brightness; | |
150 | ret = 0; | |
151 | } else { | |
152 | hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret); | |
153 | ret = (ret < 0) ? ret : -EIO; | |
154 | } | |
155 | ||
156 | mutex_unlock(&g15->mutex); | |
157 | ||
158 | return ret; | |
159 | } | |
160 | ||
161 | static void lg_g15_leds_changed_work(struct work_struct *work) | |
162 | { | |
163 | struct lg_g15_data *g15 = container_of(work, struct lg_g15_data, work); | |
164 | enum led_brightness old_brightness[LG_G15_BRIGHTNESS_MAX]; | |
165 | enum led_brightness brightness[LG_G15_BRIGHTNESS_MAX]; | |
166 | int i, ret; | |
167 | ||
168 | mutex_lock(&g15->mutex); | |
169 | for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++) | |
170 | old_brightness[i] = g15->leds[i].brightness; | |
171 | ||
172 | ret = lg_g15_update_led_brightness(g15); | |
173 | ||
174 | for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++) | |
175 | brightness[i] = g15->leds[i].brightness; | |
176 | mutex_unlock(&g15->mutex); | |
177 | ||
178 | if (ret) | |
179 | return; | |
180 | ||
181 | for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++) { | |
182 | if (brightness[i] == old_brightness[i]) | |
183 | continue; | |
184 | ||
185 | led_classdev_notify_brightness_hw_changed(&g15->leds[i].cdev, | |
186 | brightness[i]); | |
187 | } | |
188 | } | |
189 | ||
1f8cde2a HG |
190 | /******** G510 LED functions ********/ |
191 | ||
192 | static int lg_g510_get_initial_led_brightness(struct lg_g15_data *g15, int i) | |
193 | { | |
194 | int ret, high; | |
195 | ||
196 | ret = hid_hw_raw_request(g15->hdev, LG_G510_FEATURE_BACKLIGHT_RGB + i, | |
197 | g15->transfer_buf, 4, | |
198 | HID_FEATURE_REPORT, HID_REQ_GET_REPORT); | |
199 | if (ret != 4) { | |
200 | hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret); | |
201 | return (ret < 0) ? ret : -EIO; | |
202 | } | |
203 | ||
204 | high = max3(g15->transfer_buf[1], g15->transfer_buf[2], | |
205 | g15->transfer_buf[3]); | |
206 | ||
207 | if (high) { | |
208 | g15->leds[i].red = | |
209 | DIV_ROUND_CLOSEST(g15->transfer_buf[1] * 255, high); | |
210 | g15->leds[i].green = | |
211 | DIV_ROUND_CLOSEST(g15->transfer_buf[2] * 255, high); | |
212 | g15->leds[i].blue = | |
213 | DIV_ROUND_CLOSEST(g15->transfer_buf[3] * 255, high); | |
214 | g15->leds[i].brightness = high; | |
215 | } else { | |
216 | g15->leds[i].red = 255; | |
217 | g15->leds[i].green = 255; | |
218 | g15->leds[i].blue = 255; | |
219 | g15->leds[i].brightness = 0; | |
220 | } | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | /* Must be called with g15->mutex locked */ | |
226 | static int lg_g510_kbd_led_write(struct lg_g15_data *g15, | |
227 | struct lg_g15_led *g15_led, | |
228 | enum led_brightness brightness) | |
229 | { | |
230 | int ret; | |
231 | ||
232 | g15->transfer_buf[0] = 5 + g15_led->led; | |
233 | g15->transfer_buf[1] = | |
234 | DIV_ROUND_CLOSEST(g15_led->red * brightness, 255); | |
235 | g15->transfer_buf[2] = | |
236 | DIV_ROUND_CLOSEST(g15_led->green * brightness, 255); | |
237 | g15->transfer_buf[3] = | |
238 | DIV_ROUND_CLOSEST(g15_led->blue * brightness, 255); | |
239 | ||
240 | ret = hid_hw_raw_request(g15->hdev, | |
241 | LG_G510_FEATURE_BACKLIGHT_RGB + g15_led->led, | |
242 | g15->transfer_buf, 4, | |
243 | HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
244 | if (ret == 4) { | |
245 | /* Success */ | |
246 | g15_led->brightness = brightness; | |
247 | ret = 0; | |
248 | } else { | |
249 | hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret); | |
250 | ret = (ret < 0) ? ret : -EIO; | |
251 | } | |
252 | ||
253 | return ret; | |
254 | } | |
255 | ||
256 | static int lg_g510_kbd_led_set(struct led_classdev *led_cdev, | |
257 | enum led_brightness brightness) | |
258 | { | |
259 | struct lg_g15_led *g15_led = | |
260 | container_of(led_cdev, struct lg_g15_led, cdev); | |
261 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
262 | int ret; | |
263 | ||
264 | /* Ignore LED off on unregister / keyboard unplug */ | |
265 | if (led_cdev->flags & LED_UNREGISTERING) | |
266 | return 0; | |
267 | ||
268 | mutex_lock(&g15->mutex); | |
269 | ret = lg_g510_kbd_led_write(g15, g15_led, brightness); | |
270 | mutex_unlock(&g15->mutex); | |
271 | ||
272 | return ret; | |
273 | } | |
274 | ||
275 | static enum led_brightness lg_g510_kbd_led_get(struct led_classdev *led_cdev) | |
276 | { | |
277 | struct lg_g15_led *g15_led = | |
278 | container_of(led_cdev, struct lg_g15_led, cdev); | |
279 | ||
280 | return g15_led->brightness; | |
281 | } | |
282 | ||
283 | static ssize_t color_store(struct device *dev, struct device_attribute *attr, | |
284 | const char *buf, size_t count) | |
285 | { | |
286 | struct led_classdev *led_cdev = dev_get_drvdata(dev); | |
287 | struct lg_g15_led *g15_led = | |
288 | container_of(led_cdev, struct lg_g15_led, cdev); | |
289 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
290 | unsigned long value; | |
291 | int ret; | |
292 | ||
293 | if (count < 7 || (count == 8 && buf[7] != '\n') || count > 8) | |
294 | return -EINVAL; | |
295 | ||
296 | if (buf[0] != '#') | |
297 | return -EINVAL; | |
298 | ||
299 | ret = kstrtoul(buf + 1, 16, &value); | |
300 | if (ret) | |
301 | return ret; | |
302 | ||
303 | mutex_lock(&g15->mutex); | |
304 | g15_led->red = (value & 0xff0000) >> 16; | |
305 | g15_led->green = (value & 0x00ff00) >> 8; | |
306 | g15_led->blue = (value & 0x0000ff); | |
307 | ret = lg_g510_kbd_led_write(g15, g15_led, g15_led->brightness); | |
308 | mutex_unlock(&g15->mutex); | |
309 | ||
310 | return (ret < 0) ? ret : count; | |
311 | } | |
312 | ||
313 | static ssize_t color_show(struct device *dev, struct device_attribute *attr, | |
314 | char *buf) | |
315 | { | |
316 | struct led_classdev *led_cdev = dev_get_drvdata(dev); | |
317 | struct lg_g15_led *g15_led = | |
318 | container_of(led_cdev, struct lg_g15_led, cdev); | |
319 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
320 | ssize_t ret; | |
321 | ||
322 | mutex_lock(&g15->mutex); | |
323 | ret = sprintf(buf, "#%02x%02x%02x\n", | |
324 | g15_led->red, g15_led->green, g15_led->blue); | |
325 | mutex_unlock(&g15->mutex); | |
326 | ||
327 | return ret; | |
328 | } | |
329 | ||
330 | static DEVICE_ATTR_RW(color); | |
331 | ||
332 | static struct attribute *lg_g510_kbd_led_attrs[] = { | |
333 | &dev_attr_color.attr, | |
334 | NULL, | |
335 | }; | |
336 | ||
337 | static const struct attribute_group lg_g510_kbd_led_group = { | |
338 | .attrs = lg_g510_kbd_led_attrs, | |
339 | }; | |
340 | ||
341 | static const struct attribute_group *lg_g510_kbd_led_groups[] = { | |
342 | &lg_g510_kbd_led_group, | |
343 | NULL, | |
344 | }; | |
345 | ||
346 | static void lg_g510_leds_sync_work(struct work_struct *work) | |
347 | { | |
348 | struct lg_g15_data *g15 = container_of(work, struct lg_g15_data, work); | |
349 | ||
350 | mutex_lock(&g15->mutex); | |
351 | lg_g510_kbd_led_write(g15, &g15->leds[LG_G15_KBD_BRIGHTNESS], | |
352 | g15->leds[LG_G15_KBD_BRIGHTNESS].brightness); | |
353 | mutex_unlock(&g15->mutex); | |
354 | } | |
355 | ||
4682bb8e HG |
356 | static int lg_g510_update_mkey_led_brightness(struct lg_g15_data *g15) |
357 | { | |
358 | int ret; | |
359 | ||
360 | ret = hid_hw_raw_request(g15->hdev, LG_G510_FEATURE_M_KEYS_LEDS, | |
361 | g15->transfer_buf, 2, | |
362 | HID_FEATURE_REPORT, HID_REQ_GET_REPORT); | |
363 | if (ret != 2) { | |
364 | hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret); | |
365 | ret = (ret < 0) ? ret : -EIO; | |
366 | } | |
367 | ||
368 | g15->leds[LG_G15_MACRO_PRESET1].brightness = | |
369 | !!(g15->transfer_buf[1] & 0x80); | |
370 | g15->leds[LG_G15_MACRO_PRESET2].brightness = | |
371 | !!(g15->transfer_buf[1] & 0x40); | |
372 | g15->leds[LG_G15_MACRO_PRESET3].brightness = | |
373 | !!(g15->transfer_buf[1] & 0x20); | |
374 | g15->leds[LG_G15_MACRO_RECORD].brightness = | |
375 | !!(g15->transfer_buf[1] & 0x10); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static enum led_brightness lg_g510_mkey_led_get(struct led_classdev *led_cdev) | |
381 | { | |
382 | struct lg_g15_led *g15_led = | |
383 | container_of(led_cdev, struct lg_g15_led, cdev); | |
384 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
385 | enum led_brightness brightness; | |
386 | ||
387 | mutex_lock(&g15->mutex); | |
388 | lg_g510_update_mkey_led_brightness(g15); | |
389 | brightness = g15->leds[g15_led->led].brightness; | |
390 | mutex_unlock(&g15->mutex); | |
391 | ||
392 | return brightness; | |
393 | } | |
394 | ||
395 | static int lg_g510_mkey_led_set(struct led_classdev *led_cdev, | |
396 | enum led_brightness brightness) | |
397 | { | |
398 | struct lg_g15_led *g15_led = | |
399 | container_of(led_cdev, struct lg_g15_led, cdev); | |
400 | struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); | |
401 | u8 val, mask = 0; | |
402 | int i, ret; | |
403 | ||
404 | /* Ignore LED off on unregister / keyboard unplug */ | |
405 | if (led_cdev->flags & LED_UNREGISTERING) | |
406 | return 0; | |
407 | ||
408 | mutex_lock(&g15->mutex); | |
409 | ||
410 | for (i = LG_G15_MACRO_PRESET1; i < LG_G15_LED_MAX; i++) { | |
411 | if (i == g15_led->led) | |
412 | val = brightness; | |
413 | else | |
414 | val = g15->leds[i].brightness; | |
415 | ||
416 | if (val) | |
417 | mask |= 0x80 >> (i - LG_G15_MACRO_PRESET1); | |
418 | } | |
419 | ||
420 | g15->transfer_buf[0] = LG_G510_FEATURE_M_KEYS_LEDS; | |
421 | g15->transfer_buf[1] = mask; | |
422 | ||
423 | ret = hid_hw_raw_request(g15->hdev, LG_G510_FEATURE_M_KEYS_LEDS, | |
424 | g15->transfer_buf, 2, | |
425 | HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
426 | if (ret == 2) { | |
427 | /* Success */ | |
428 | g15_led->brightness = brightness; | |
429 | ret = 0; | |
430 | } else { | |
431 | hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret); | |
432 | ret = (ret < 0) ? ret : -EIO; | |
433 | } | |
434 | ||
435 | mutex_unlock(&g15->mutex); | |
436 | ||
437 | return ret; | |
438 | } | |
439 | ||
1f8cde2a HG |
440 | /******** Generic LED functions ********/ |
441 | static int lg_g15_get_initial_led_brightness(struct lg_g15_data *g15) | |
442 | { | |
443 | int ret; | |
444 | ||
445 | switch (g15->model) { | |
446 | case LG_G15: | |
447 | case LG_G15_V2: | |
448 | return lg_g15_update_led_brightness(g15); | |
449 | case LG_G510: | |
450 | case LG_G510_USB_AUDIO: | |
451 | ret = lg_g510_get_initial_led_brightness(g15, 0); | |
452 | if (ret) | |
453 | return ret; | |
454 | ||
455 | ret = lg_g510_get_initial_led_brightness(g15, 1); | |
456 | if (ret) | |
457 | return ret; | |
458 | ||
4682bb8e | 459 | return lg_g510_update_mkey_led_brightness(g15); |
1f8cde2a HG |
460 | } |
461 | return -EINVAL; /* Never reached */ | |
462 | } | |
463 | ||
464 | /******** Input functions ********/ | |
465 | ||
3a027538 HG |
466 | /* On the G15 Mark I Logitech has been quite creative with which bit is what */ |
467 | static int lg_g15_event(struct lg_g15_data *g15, u8 *data, int size) | |
468 | { | |
469 | int i, val; | |
470 | ||
471 | /* G1 - G6 */ | |
472 | for (i = 0; i < 6; i++) { | |
473 | val = data[i + 1] & (1 << i); | |
474 | input_report_key(g15->input, KEY_MACRO1 + i, val); | |
475 | } | |
476 | /* G7 - G12 */ | |
477 | for (i = 0; i < 6; i++) { | |
478 | val = data[i + 2] & (1 << i); | |
479 | input_report_key(g15->input, KEY_MACRO7 + i, val); | |
480 | } | |
481 | /* G13 - G17 */ | |
482 | for (i = 0; i < 5; i++) { | |
483 | val = data[i + 1] & (4 << i); | |
484 | input_report_key(g15->input, KEY_MACRO13 + i, val); | |
485 | } | |
486 | /* G18 */ | |
487 | input_report_key(g15->input, KEY_MACRO18, data[8] & 0x40); | |
488 | ||
489 | /* M1 - M3 */ | |
490 | for (i = 0; i < 3; i++) { | |
491 | val = data[i + 6] & (1 << i); | |
492 | input_report_key(g15->input, KEY_MACRO_PRESET1 + i, val); | |
493 | } | |
494 | /* MR */ | |
495 | input_report_key(g15->input, KEY_MACRO_RECORD_START, data[7] & 0x40); | |
496 | ||
497 | /* Most left (round) button below the LCD */ | |
498 | input_report_key(g15->input, KEY_KBD_LCD_MENU1, data[8] & 0x80); | |
499 | /* 4 other buttons below the LCD */ | |
500 | for (i = 0; i < 4; i++) { | |
501 | val = data[i + 2] & 0x80; | |
502 | input_report_key(g15->input, KEY_KBD_LCD_MENU2 + i, val); | |
503 | } | |
504 | ||
97b741ab HG |
505 | /* Backlight cycle button pressed? */ |
506 | if (data[1] & 0x80) | |
507 | schedule_work(&g15->work); | |
508 | ||
3a027538 HG |
509 | input_sync(g15->input); |
510 | return 0; | |
511 | } | |
512 | ||
513 | static int lg_g15_v2_event(struct lg_g15_data *g15, u8 *data, int size) | |
514 | { | |
515 | int i, val; | |
516 | ||
517 | /* G1 - G6 */ | |
518 | for (i = 0; i < 6; i++) { | |
519 | val = data[1] & (1 << i); | |
520 | input_report_key(g15->input, KEY_MACRO1 + i, val); | |
521 | } | |
522 | ||
523 | /* M1 - M3 + MR */ | |
524 | input_report_key(g15->input, KEY_MACRO_PRESET1, data[1] & 0x40); | |
525 | input_report_key(g15->input, KEY_MACRO_PRESET2, data[1] & 0x80); | |
526 | input_report_key(g15->input, KEY_MACRO_PRESET3, data[2] & 0x20); | |
527 | input_report_key(g15->input, KEY_MACRO_RECORD_START, data[2] & 0x40); | |
528 | ||
529 | /* Round button to the left of the LCD */ | |
530 | input_report_key(g15->input, KEY_KBD_LCD_MENU1, data[2] & 0x80); | |
531 | /* 4 buttons below the LCD */ | |
532 | for (i = 0; i < 4; i++) { | |
533 | val = data[2] & (2 << i); | |
534 | input_report_key(g15->input, KEY_KBD_LCD_MENU2 + i, val); | |
535 | } | |
536 | ||
97b741ab HG |
537 | /* Backlight cycle button pressed? */ |
538 | if (data[2] & 0x01) | |
539 | schedule_work(&g15->work); | |
540 | ||
3a027538 HG |
541 | input_sync(g15->input); |
542 | return 0; | |
543 | } | |
544 | ||
ad4203f5 HG |
545 | static int lg_g510_event(struct lg_g15_data *g15, u8 *data, int size) |
546 | { | |
547 | bool game_mode_enabled; | |
548 | int i, val; | |
549 | ||
550 | /* G1 - G18 */ | |
551 | for (i = 0; i < 18; i++) { | |
552 | val = data[i / 8 + 1] & (1 << (i % 8)); | |
553 | input_report_key(g15->input, KEY_MACRO1 + i, val); | |
554 | } | |
555 | ||
556 | /* Game mode on/off slider */ | |
557 | game_mode_enabled = data[3] & 0x04; | |
558 | if (game_mode_enabled != g15->game_mode_enabled) { | |
559 | if (game_mode_enabled) | |
560 | hid_info(g15->hdev, "Game Mode enabled, Windows (super) key is disabled\n"); | |
561 | else | |
562 | hid_info(g15->hdev, "Game Mode disabled\n"); | |
563 | g15->game_mode_enabled = game_mode_enabled; | |
564 | } | |
565 | ||
566 | /* M1 - M3 */ | |
567 | for (i = 0; i < 3; i++) { | |
568 | val = data[3] & (0x10 << i); | |
569 | input_report_key(g15->input, KEY_MACRO_PRESET1 + i, val); | |
570 | } | |
571 | /* MR */ | |
572 | input_report_key(g15->input, KEY_MACRO_RECORD_START, data[3] & 0x80); | |
573 | ||
574 | /* LCD menu keys */ | |
575 | for (i = 0; i < 5; i++) { | |
576 | val = data[4] & (1 << i); | |
577 | input_report_key(g15->input, KEY_KBD_LCD_MENU1 + i, val); | |
578 | } | |
579 | ||
580 | /* Headphone Mute */ | |
581 | input_report_key(g15->input, KEY_MUTE, data[4] & 0x20); | |
582 | /* Microphone Mute */ | |
583 | input_report_key(g15->input, KEY_F20, data[4] & 0x40); | |
584 | ||
585 | input_sync(g15->input); | |
586 | return 0; | |
587 | } | |
588 | ||
1f8cde2a HG |
589 | static int lg_g510_leds_event(struct lg_g15_data *g15, u8 *data, int size) |
590 | { | |
591 | bool backlight_disabled; | |
592 | ||
593 | /* | |
594 | * The G510 ignores backlight updates when the backlight is turned off | |
595 | * through the light toggle button on the keyboard, to work around this | |
596 | * we queue a workitem to sync values when the backlight is turned on. | |
597 | */ | |
598 | backlight_disabled = data[1] & 0x04; | |
599 | if (!backlight_disabled) | |
600 | schedule_work(&g15->work); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
3a027538 HG |
605 | static int lg_g15_raw_event(struct hid_device *hdev, struct hid_report *report, |
606 | u8 *data, int size) | |
607 | { | |
608 | struct lg_g15_data *g15 = hid_get_drvdata(hdev); | |
609 | ||
ad4203f5 HG |
610 | if (!g15) |
611 | return 0; | |
3a027538 | 612 | |
ad4203f5 HG |
613 | switch (g15->model) { |
614 | case LG_G15: | |
615 | if (data[0] == 0x02 && size == 9) | |
616 | return lg_g15_event(g15, data, size); | |
617 | break; | |
618 | case LG_G15_V2: | |
619 | if (data[0] == 0x02 && size == 5) | |
620 | return lg_g15_v2_event(g15, data, size); | |
621 | break; | |
622 | case LG_G510: | |
623 | case LG_G510_USB_AUDIO: | |
624 | if (data[0] == 0x03 && size == 5) | |
625 | return lg_g510_event(g15, data, size); | |
1f8cde2a HG |
626 | if (data[0] == 0x04 && size == 2) |
627 | return lg_g510_leds_event(g15, data, size); | |
ad4203f5 HG |
628 | break; |
629 | } | |
3a027538 HG |
630 | |
631 | return 0; | |
632 | } | |
633 | ||
634 | static int lg_g15_input_open(struct input_dev *dev) | |
635 | { | |
636 | struct hid_device *hdev = input_get_drvdata(dev); | |
637 | ||
638 | return hid_hw_open(hdev); | |
639 | } | |
640 | ||
641 | static void lg_g15_input_close(struct input_dev *dev) | |
642 | { | |
643 | struct hid_device *hdev = input_get_drvdata(dev); | |
644 | ||
645 | hid_hw_close(hdev); | |
646 | } | |
647 | ||
97b741ab HG |
648 | static int lg_g15_register_led(struct lg_g15_data *g15, int i) |
649 | { | |
650 | const char * const led_names[] = { | |
651 | "g15::kbd_backlight", | |
652 | "g15::lcd_backlight", | |
d5b5fc8c HG |
653 | "g15::macro_preset1", |
654 | "g15::macro_preset2", | |
655 | "g15::macro_preset3", | |
656 | "g15::macro_record", | |
97b741ab HG |
657 | }; |
658 | ||
659 | g15->leds[i].led = i; | |
660 | g15->leds[i].cdev.name = led_names[i]; | |
1f8cde2a HG |
661 | |
662 | switch (g15->model) { | |
663 | case LG_G15: | |
664 | case LG_G15_V2: | |
665 | g15->leds[i].cdev.brightness_set_blocking = lg_g15_led_set; | |
666 | g15->leds[i].cdev.brightness_get = lg_g15_led_get; | |
667 | if (i < LG_G15_BRIGHTNESS_MAX) { | |
668 | g15->leds[i].cdev.flags = LED_BRIGHT_HW_CHANGED; | |
669 | g15->leds[i].cdev.max_brightness = 2; | |
670 | } else { | |
671 | g15->leds[i].cdev.max_brightness = 1; | |
672 | } | |
673 | break; | |
674 | case LG_G510: | |
675 | case LG_G510_USB_AUDIO: | |
676 | switch (i) { | |
677 | case LG_G15_LCD_BRIGHTNESS: | |
678 | /* | |
679 | * The G510 does not have a separate LCD brightness, | |
680 | * but it does have a separate power-on (reset) value. | |
681 | */ | |
682 | g15->leds[i].cdev.name = "g15::power_on_backlight_val"; | |
683 | /* fall through */ | |
684 | case LG_G15_KBD_BRIGHTNESS: | |
685 | g15->leds[i].cdev.brightness_set_blocking = | |
686 | lg_g510_kbd_led_set; | |
687 | g15->leds[i].cdev.brightness_get = | |
688 | lg_g510_kbd_led_get; | |
689 | g15->leds[i].cdev.max_brightness = 255; | |
690 | g15->leds[i].cdev.groups = lg_g510_kbd_led_groups; | |
691 | break; | |
692 | default: | |
4682bb8e HG |
693 | g15->leds[i].cdev.brightness_set_blocking = |
694 | lg_g510_mkey_led_set; | |
695 | g15->leds[i].cdev.brightness_get = | |
696 | lg_g510_mkey_led_get; | |
697 | g15->leds[i].cdev.max_brightness = 1; | |
1f8cde2a HG |
698 | } |
699 | break; | |
d5b5fc8c | 700 | } |
97b741ab HG |
701 | |
702 | return devm_led_classdev_register(&g15->hdev->dev, &g15->leds[i].cdev); | |
703 | } | |
704 | ||
3a027538 HG |
705 | static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id) |
706 | { | |
707 | u8 gkeys_settings_output_report = 0; | |
ad4203f5 HG |
708 | u8 gkeys_settings_feature_report = 0; |
709 | struct hid_report_enum *rep_enum; | |
3a027538 | 710 | unsigned int connect_mask = 0; |
ad4203f5 | 711 | bool has_ff000000 = false; |
3a027538 HG |
712 | struct lg_g15_data *g15; |
713 | struct input_dev *input; | |
ad4203f5 | 714 | struct hid_report *rep; |
3a027538 HG |
715 | int ret, i, gkeys = 0; |
716 | ||
ad4203f5 HG |
717 | hdev->quirks |= HID_QUIRK_INPUT_PER_APP; |
718 | ||
3a027538 HG |
719 | ret = hid_parse(hdev); |
720 | if (ret) | |
721 | return ret; | |
722 | ||
ad4203f5 HG |
723 | /* |
724 | * Some models have multiple interfaces, we want the interface with | |
725 | * with the f000.0000 application input report. | |
726 | */ | |
727 | rep_enum = &hdev->report_enum[HID_INPUT_REPORT]; | |
728 | list_for_each_entry(rep, &rep_enum->report_list, list) { | |
729 | if (rep->application == 0xff000000) | |
730 | has_ff000000 = true; | |
731 | } | |
732 | if (!has_ff000000) | |
733 | return hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
734 | ||
3a027538 HG |
735 | g15 = devm_kzalloc(&hdev->dev, sizeof(*g15), GFP_KERNEL); |
736 | if (!g15) | |
737 | return -ENOMEM; | |
738 | ||
97b741ab HG |
739 | mutex_init(&g15->mutex); |
740 | ||
3a027538 HG |
741 | input = devm_input_allocate_device(&hdev->dev); |
742 | if (!input) | |
743 | return -ENOMEM; | |
744 | ||
745 | g15->hdev = hdev; | |
746 | g15->model = id->driver_data; | |
747 | hid_set_drvdata(hdev, (void *)g15); | |
748 | ||
749 | switch (g15->model) { | |
750 | case LG_G15: | |
1f8cde2a | 751 | INIT_WORK(&g15->work, lg_g15_leds_changed_work); |
3a027538 HG |
752 | /* |
753 | * The G15 and G15 v2 use a separate usb-device (on a builtin | |
754 | * hub) which emulates a keyboard for the F1 - F12 emulation | |
755 | * on the G-keys, which we disable, rendering the emulated kbd | |
756 | * non-functional, so we do not let hid-input connect. | |
757 | */ | |
758 | connect_mask = HID_CONNECT_HIDRAW; | |
759 | gkeys_settings_output_report = 0x02; | |
760 | gkeys = 18; | |
761 | break; | |
762 | case LG_G15_V2: | |
1f8cde2a | 763 | INIT_WORK(&g15->work, lg_g15_leds_changed_work); |
3a027538 HG |
764 | connect_mask = HID_CONNECT_HIDRAW; |
765 | gkeys_settings_output_report = 0x02; | |
766 | gkeys = 6; | |
767 | break; | |
ad4203f5 HG |
768 | case LG_G510: |
769 | case LG_G510_USB_AUDIO: | |
1f8cde2a | 770 | INIT_WORK(&g15->work, lg_g510_leds_sync_work); |
ad4203f5 HG |
771 | connect_mask = HID_CONNECT_HIDINPUT | HID_CONNECT_HIDRAW; |
772 | gkeys_settings_feature_report = 0x01; | |
773 | gkeys = 18; | |
774 | break; | |
3a027538 HG |
775 | } |
776 | ||
777 | ret = hid_hw_start(hdev, connect_mask); | |
778 | if (ret) | |
779 | return ret; | |
780 | ||
781 | /* Tell the keyboard to stop sending F1-F12 + 1-6 for G1 - G18 */ | |
782 | if (gkeys_settings_output_report) { | |
783 | g15->transfer_buf[0] = gkeys_settings_output_report; | |
784 | memset(g15->transfer_buf + 1, 0, gkeys); | |
785 | /* | |
786 | * The kbd ignores our output report if we do not queue | |
787 | * an URB on the USB input endpoint first... | |
788 | */ | |
789 | ret = hid_hw_open(hdev); | |
790 | if (ret) | |
791 | goto error_hw_stop; | |
792 | ret = hid_hw_output_report(hdev, g15->transfer_buf, gkeys + 1); | |
793 | hid_hw_close(hdev); | |
794 | } | |
795 | ||
ad4203f5 HG |
796 | if (gkeys_settings_feature_report) { |
797 | g15->transfer_buf[0] = gkeys_settings_feature_report; | |
798 | memset(g15->transfer_buf + 1, 0, gkeys); | |
799 | ret = hid_hw_raw_request(g15->hdev, | |
800 | gkeys_settings_feature_report, | |
801 | g15->transfer_buf, gkeys + 1, | |
802 | HID_FEATURE_REPORT, HID_REQ_SET_REPORT); | |
803 | } | |
804 | ||
3a027538 | 805 | if (ret < 0) { |
b8a75ead HG |
806 | hid_err(hdev, "Error %d disabling keyboard emulation for the G-keys, falling back to generic hid-input driver\n", |
807 | ret); | |
808 | hid_set_drvdata(hdev, NULL); | |
809 | return 0; | |
3a027538 HG |
810 | } |
811 | ||
97b741ab | 812 | /* Get initial brightness levels */ |
1f8cde2a | 813 | ret = lg_g15_get_initial_led_brightness(g15); |
97b741ab HG |
814 | if (ret) |
815 | goto error_hw_stop; | |
816 | ||
817 | /* Setup and register input device */ | |
3a027538 HG |
818 | input->name = "Logitech Gaming Keyboard Gaming Keys"; |
819 | input->phys = hdev->phys; | |
820 | input->uniq = hdev->uniq; | |
821 | input->id.bustype = hdev->bus; | |
822 | input->id.vendor = hdev->vendor; | |
823 | input->id.product = hdev->product; | |
824 | input->id.version = hdev->version; | |
825 | input->dev.parent = &hdev->dev; | |
826 | input->open = lg_g15_input_open; | |
827 | input->close = lg_g15_input_close; | |
828 | ||
829 | /* G-keys */ | |
830 | for (i = 0; i < gkeys; i++) | |
831 | input_set_capability(input, EV_KEY, KEY_MACRO1 + i); | |
832 | ||
833 | /* M1 - M3 and MR keys */ | |
834 | for (i = 0; i < 3; i++) | |
835 | input_set_capability(input, EV_KEY, KEY_MACRO_PRESET1 + i); | |
836 | input_set_capability(input, EV_KEY, KEY_MACRO_RECORD_START); | |
837 | ||
838 | /* Keys below the LCD, intended for controlling a menu on the LCD */ | |
839 | for (i = 0; i < 5; i++) | |
840 | input_set_capability(input, EV_KEY, KEY_KBD_LCD_MENU1 + i); | |
841 | ||
ad4203f5 HG |
842 | /* |
843 | * On the G510 only report headphone and mic mute keys when *not* using | |
844 | * the builtin USB audio device. When the builtin audio is used these | |
845 | * keys directly toggle mute (and the LEDs) on/off. | |
846 | */ | |
847 | if (g15->model == LG_G510) { | |
848 | input_set_capability(input, EV_KEY, KEY_MUTE); | |
849 | /* Userspace expects F20 for micmute */ | |
850 | input_set_capability(input, EV_KEY, KEY_F20); | |
851 | } | |
852 | ||
3a027538 HG |
853 | g15->input = input; |
854 | input_set_drvdata(input, hdev); | |
855 | ||
856 | ret = input_register_device(input); | |
857 | if (ret) | |
858 | goto error_hw_stop; | |
859 | ||
97b741ab | 860 | /* Register LED devices */ |
d5b5fc8c | 861 | for (i = 0; i < LG_G15_LED_MAX; i++) { |
97b741ab HG |
862 | ret = lg_g15_register_led(g15, i); |
863 | if (ret) | |
864 | goto error_hw_stop; | |
865 | } | |
866 | ||
3a027538 HG |
867 | return 0; |
868 | ||
869 | error_hw_stop: | |
870 | hid_hw_stop(hdev); | |
871 | return ret; | |
872 | } | |
873 | ||
874 | static const struct hid_device_id lg_g15_devices[] = { | |
b1bd0f75 FS |
875 | /* The G11 is a G15 without the LCD, treat it as a G15 */ |
876 | { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, | |
877 | USB_DEVICE_ID_LOGITECH_G11), | |
878 | .driver_data = LG_G15 }, | |
3a027538 HG |
879 | { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, |
880 | USB_DEVICE_ID_LOGITECH_G15_LCD), | |
881 | .driver_data = LG_G15 }, | |
882 | { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, | |
883 | USB_DEVICE_ID_LOGITECH_G15_V2_LCD), | |
884 | .driver_data = LG_G15_V2 }, | |
ad4203f5 HG |
885 | /* G510 without a headset plugged in */ |
886 | { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, | |
887 | USB_DEVICE_ID_LOGITECH_G510), | |
888 | .driver_data = LG_G510 }, | |
889 | /* G510 with headset plugged in / with extra USB audio interface */ | |
890 | { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, | |
891 | USB_DEVICE_ID_LOGITECH_G510_USB_AUDIO), | |
892 | .driver_data = LG_G510_USB_AUDIO }, | |
3a027538 HG |
893 | { } |
894 | }; | |
895 | MODULE_DEVICE_TABLE(hid, lg_g15_devices); | |
896 | ||
897 | static struct hid_driver lg_g15_driver = { | |
898 | .name = "lg-g15", | |
899 | .id_table = lg_g15_devices, | |
900 | .raw_event = lg_g15_raw_event, | |
901 | .probe = lg_g15_probe, | |
902 | }; | |
903 | module_hid_driver(lg_g15_driver); | |
904 | ||
905 | MODULE_LICENSE("GPL"); |