1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*-*-linux-c-*-*/
3
4 /*
5 Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net>
6 Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
7 Copyright (C) 2008 Tony Vroon <tony@linx.net>
8 Based on earlier work:
9 Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
10 Adrian Yee <brewt-fujitsu@brewt.org>
11
12 Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
13 by its respective authors.
14
15 */
16
17 /*
18 * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
19 * features made available on a range of Fujitsu laptops including the
20 * P2xxx/P5xxx/S6xxx/S7xxx series.
21 *
22 * This driver implements a vendor-specific backlight control interface for
23 * Fujitsu laptops and provides support for hotkeys present on certain Fujitsu
24 * laptops.
25 *
26 * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
27 * P8010. It should work on most P-series and S-series Lifebooks, but
28 * YMMV.
29 *
30 * The module parameter use_alt_lcd_levels switches between different ACPI
31 * brightness controls which are used by different Fujitsu laptops. In most
32 * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
33 * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
34 *
35 */
36
37 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
38
39 #include <linux/module.h>
40 #include <linux/kernel.h>
41 #include <linux/init.h>
42 #include <linux/acpi.h>
43 #include <linux/bitops.h>
44 #include <linux/dmi.h>
45 #include <linux/backlight.h>
46 #include <linux/fb.h>
47 #include <linux/input.h>
48 #include <linux/input/sparse-keymap.h>
49 #include <linux/kfifo.h>
50 #include <linux/leds.h>
51 #include <linux/platform_device.h>
52 #include <acpi/video.h>
53
54 #define FUJITSU_DRIVER_VERSION "0.6.0"
55
56 #define FUJITSU_LCD_N_LEVELS 8
57
58 #define ACPI_FUJITSU_CLASS "fujitsu"
59 #define ACPI_FUJITSU_BL_HID "FUJ02B1"
60 #define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
61 #define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1"
62 #define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3"
63 #define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
64 #define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3"
65
66 #define ACPI_FUJITSU_NOTIFY_CODE 0x80
67
68 /* FUNC interface - command values */
69 #define FUNC_FLAGS BIT(12)
70 #define FUNC_LEDS (BIT(12) | BIT(0))
71 #define FUNC_BUTTONS (BIT(12) | BIT(1))
72 #define FUNC_BACKLIGHT (BIT(12) | BIT(2))
73
74 /* FUNC interface - responses */
75 #define UNSUPPORTED_CMD 0x80000000
76
77 /* FUNC interface - status flags */
78 #define FLAG_RFKILL BIT(5)
79 #define FLAG_LID BIT(8)
80 #define FLAG_DOCK BIT(9)
81 #define FLAG_TOUCHPAD_TOGGLE BIT(26)
82 #define FLAG_MICMUTE BIT(29)
83 #define FLAG_SOFTKEYS (FLAG_RFKILL | FLAG_TOUCHPAD_TOGGLE | FLAG_MICMUTE)
84
85 /* FUNC interface - LED control */
86 #define FUNC_LED_OFF BIT(0)
87 #define FUNC_LED_ON (BIT(0) | BIT(16) | BIT(17))
88 #define LOGOLAMP_POWERON BIT(13)
89 #define LOGOLAMP_ALWAYS BIT(14)
90 #define KEYBOARD_LAMPS BIT(8)
91 #define RADIO_LED_ON BIT(5)
92 #define ECO_LED BIT(16)
93 #define ECO_LED_ON BIT(19)
94
95 /* FUNC interface - backlight power control */
96 #define BACKLIGHT_PARAM_POWER BIT(2)
97 #define BACKLIGHT_OFF (BIT(0) | BIT(1))
98 #define BACKLIGHT_ON 0
99
100 /* Scancodes read from the GIRB register */
101 #define KEY1_CODE 0x410
102 #define KEY2_CODE 0x411
103 #define KEY3_CODE 0x412
104 #define KEY4_CODE 0x413
105 #define KEY5_CODE 0x420
106
107 /* Hotkey ringbuffer limits */
108 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
109 #define RINGBUFFERSIZE 40
110
111 /* Module parameters */
112 static int use_alt_lcd_levels = -1;
113 static bool disable_brightness_adjust;
114
115 /* Device controlling the backlight and associated keys */
116 struct fujitsu_bl {
117 struct input_dev *input;
118 char phys[32];
119 struct backlight_device *bl_device;
120 unsigned int max_brightness;
121 unsigned int brightness_level;
122 };
123
124 static struct fujitsu_bl *fujitsu_bl;
125
126 /* Device used to access hotkeys and other features on the laptop */
127 struct fujitsu_laptop {
128 struct input_dev *input;
129 char phys[32];
130 struct platform_device *pf_device;
131 struct kfifo fifo;
132 spinlock_t fifo_lock;
133 int flags_supported;
134 int flags_state;
135 };
136
137 static struct acpi_device *fext;
138
139 /* Fujitsu ACPI interface function */
140
call_fext_func(struct acpi_device * device,int func,int op,int feature,int state)141 static int call_fext_func(struct acpi_device *device,
142 int func, int op, int feature, int state)
143 {
144 union acpi_object params[4] = {
145 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
146 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = op },
147 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature },
148 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = state }
149 };
150 struct acpi_object_list arg_list = { 4, params };
151 unsigned long long value;
152 acpi_status status;
153
154 status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,
155 &value);
156 if (ACPI_FAILURE(status)) {
157 acpi_handle_err(device->handle, "Failed to evaluate FUNC\n");
158 return -ENODEV;
159 }
160
161 acpi_handle_debug(device->handle,
162 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
163 func, op, feature, state, (int)value);
164 return value;
165 }
166
167 /* Hardware access for LCD brightness control */
168
set_lcd_level(struct acpi_device * device,int level)169 static int set_lcd_level(struct acpi_device *device, int level)
170 {
171 struct fujitsu_bl *priv = acpi_driver_data(device);
172 acpi_status status;
173 char *method;
174
175 switch (use_alt_lcd_levels) {
176 case -1:
177 if (acpi_has_method(device->handle, "SBL2"))
178 method = "SBL2";
179 else
180 method = "SBLL";
181 break;
182 case 1:
183 method = "SBL2";
184 break;
185 default:
186 method = "SBLL";
187 break;
188 }
189
190 acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method,
191 level);
192
193 if (level < 0 || level >= priv->max_brightness)
194 return -EINVAL;
195
196 status = acpi_execute_simple_method(device->handle, method, level);
197 if (ACPI_FAILURE(status)) {
198 acpi_handle_err(device->handle, "Failed to evaluate %s\n",
199 method);
200 return -ENODEV;
201 }
202
203 priv->brightness_level = level;
204
205 return 0;
206 }
207
get_lcd_level(struct acpi_device * device)208 static int get_lcd_level(struct acpi_device *device)
209 {
210 struct fujitsu_bl *priv = acpi_driver_data(device);
211 unsigned long long state = 0;
212 acpi_status status = AE_OK;
213
214 acpi_handle_debug(device->handle, "get lcd level via GBLL\n");
215
216 status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state);
217 if (ACPI_FAILURE(status))
218 return 0;
219
220 priv->brightness_level = state & 0x0fffffff;
221
222 return priv->brightness_level;
223 }
224
get_max_brightness(struct acpi_device * device)225 static int get_max_brightness(struct acpi_device *device)
226 {
227 struct fujitsu_bl *priv = acpi_driver_data(device);
228 unsigned long long state = 0;
229 acpi_status status = AE_OK;
230
231 acpi_handle_debug(device->handle, "get max lcd level via RBLL\n");
232
233 status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state);
234 if (ACPI_FAILURE(status))
235 return -1;
236
237 priv->max_brightness = state;
238
239 return priv->max_brightness;
240 }
241
242 /* Backlight device stuff */
243
bl_get_brightness(struct backlight_device * b)244 static int bl_get_brightness(struct backlight_device *b)
245 {
246 struct acpi_device *device = bl_get_data(b);
247
248 return b->props.power == FB_BLANK_POWERDOWN ? 0 : get_lcd_level(device);
249 }
250
bl_update_status(struct backlight_device * b)251 static int bl_update_status(struct backlight_device *b)
252 {
253 struct acpi_device *device = bl_get_data(b);
254
255 if (fext) {
256 if (b->props.power == FB_BLANK_POWERDOWN)
257 call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
258 BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
259 else
260 call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
261 BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
262 }
263
264 return set_lcd_level(device, b->props.brightness);
265 }
266
267 static const struct backlight_ops fujitsu_bl_ops = {
268 .get_brightness = bl_get_brightness,
269 .update_status = bl_update_status,
270 };
271
lid_show(struct device * dev,struct device_attribute * attr,char * buf)272 static ssize_t lid_show(struct device *dev, struct device_attribute *attr,
273 char *buf)
274 {
275 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
276
277 if (!(priv->flags_supported & FLAG_LID))
278 return sprintf(buf, "unknown\n");
279 if (priv->flags_state & FLAG_LID)
280 return sprintf(buf, "open\n");
281 else
282 return sprintf(buf, "closed\n");
283 }
284
dock_show(struct device * dev,struct device_attribute * attr,char * buf)285 static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
286 char *buf)
287 {
288 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
289
290 if (!(priv->flags_supported & FLAG_DOCK))
291 return sprintf(buf, "unknown\n");
292 if (priv->flags_state & FLAG_DOCK)
293 return sprintf(buf, "docked\n");
294 else
295 return sprintf(buf, "undocked\n");
296 }
297
radios_show(struct device * dev,struct device_attribute * attr,char * buf)298 static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
299 char *buf)
300 {
301 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
302
303 if (!(priv->flags_supported & FLAG_RFKILL))
304 return sprintf(buf, "unknown\n");
305 if (priv->flags_state & FLAG_RFKILL)
306 return sprintf(buf, "on\n");
307 else
308 return sprintf(buf, "killed\n");
309 }
310
311 static DEVICE_ATTR_RO(lid);
312 static DEVICE_ATTR_RO(dock);
313 static DEVICE_ATTR_RO(radios);
314
315 static struct attribute *fujitsu_pf_attributes[] = {
316 &dev_attr_lid.attr,
317 &dev_attr_dock.attr,
318 &dev_attr_radios.attr,
319 NULL
320 };
321
322 static const struct attribute_group fujitsu_pf_attribute_group = {
323 .attrs = fujitsu_pf_attributes
324 };
325
326 static struct platform_driver fujitsu_pf_driver = {
327 .driver = {
328 .name = "fujitsu-laptop",
329 }
330 };
331
332 /* ACPI device for LCD brightness control */
333
334 static const struct key_entry keymap_backlight[] = {
335 { KE_KEY, true, { KEY_BRIGHTNESSUP } },
336 { KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
337 { KE_END, 0 }
338 };
339
acpi_fujitsu_bl_input_setup(struct acpi_device * device)340 static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
341 {
342 struct fujitsu_bl *priv = acpi_driver_data(device);
343 int ret;
344
345 priv->input = devm_input_allocate_device(&device->dev);
346 if (!priv->input)
347 return -ENOMEM;
348
349 snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0",
350 acpi_device_hid(device));
351
352 priv->input->name = acpi_device_name(device);
353 priv->input->phys = priv->phys;
354 priv->input->id.bustype = BUS_HOST;
355 priv->input->id.product = 0x06;
356
357 ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);
358 if (ret)
359 return ret;
360
361 return input_register_device(priv->input);
362 }
363
fujitsu_backlight_register(struct acpi_device * device)364 static int fujitsu_backlight_register(struct acpi_device *device)
365 {
366 struct fujitsu_bl *priv = acpi_driver_data(device);
367 const struct backlight_properties props = {
368 .brightness = priv->brightness_level,
369 .max_brightness = priv->max_brightness - 1,
370 .type = BACKLIGHT_PLATFORM
371 };
372 struct backlight_device *bd;
373
374 bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop",
375 &device->dev, device,
376 &fujitsu_bl_ops, &props);
377 if (IS_ERR(bd))
378 return PTR_ERR(bd);
379
380 priv->bl_device = bd;
381
382 return 0;
383 }
384
acpi_fujitsu_bl_add(struct acpi_device * device)385 static int acpi_fujitsu_bl_add(struct acpi_device *device)
386 {
387 struct fujitsu_bl *priv;
388 int ret;
389
390 if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
391 return -ENODEV;
392
393 priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
394 if (!priv)
395 return -ENOMEM;
396
397 fujitsu_bl = priv;
398 strcpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME);
399 strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
400 device->driver_data = priv;
401
402 pr_info("ACPI: %s [%s]\n",
403 acpi_device_name(device), acpi_device_bid(device));
404
405 if (get_max_brightness(device) <= 0)
406 priv->max_brightness = FUJITSU_LCD_N_LEVELS;
407 get_lcd_level(device);
408
409 ret = acpi_fujitsu_bl_input_setup(device);
410 if (ret)
411 return ret;
412
413 return fujitsu_backlight_register(device);
414 }
415
416 /* Brightness notify */
417
acpi_fujitsu_bl_notify(struct acpi_device * device,u32 event)418 static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
419 {
420 struct fujitsu_bl *priv = acpi_driver_data(device);
421 int oldb, newb;
422
423 if (event != ACPI_FUJITSU_NOTIFY_CODE) {
424 acpi_handle_info(device->handle, "unsupported event [0x%x]\n",
425 event);
426 sparse_keymap_report_event(priv->input, -1, 1, true);
427 return;
428 }
429
430 oldb = priv->brightness_level;
431 get_lcd_level(device);
432 newb = priv->brightness_level;
433
434 acpi_handle_debug(device->handle,
435 "brightness button event [%i -> %i]\n", oldb, newb);
436
437 if (oldb == newb)
438 return;
439
440 if (!disable_brightness_adjust)
441 set_lcd_level(device, newb);
442
443 sparse_keymap_report_event(priv->input, oldb < newb, 1, true);
444 }
445
446 /* ACPI device for hotkey handling */
447
448 static const struct key_entry keymap_default[] = {
449 { KE_KEY, KEY1_CODE, { KEY_PROG1 } },
450 { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
451 { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
452 { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
453 { KE_KEY, KEY5_CODE, { KEY_RFKILL } },
454 /* Soft keys read from status flags */
455 { KE_KEY, FLAG_RFKILL, { KEY_RFKILL } },
456 { KE_KEY, FLAG_TOUCHPAD_TOGGLE, { KEY_TOUCHPAD_TOGGLE } },
457 { KE_KEY, FLAG_MICMUTE, { KEY_MICMUTE } },
458 { KE_END, 0 }
459 };
460
461 static const struct key_entry keymap_s64x0[] = {
462 { KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } }, /* "Lock" */
463 { KE_KEY, KEY2_CODE, { KEY_HELP } }, /* "Mobility Center */
464 { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
465 { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
466 { KE_END, 0 }
467 };
468
469 static const struct key_entry keymap_p8010[] = {
470 { KE_KEY, KEY1_CODE, { KEY_HELP } }, /* "Support" */
471 { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
472 { KE_KEY, KEY3_CODE, { KEY_SWITCHVIDEOMODE } }, /* "Presentation" */
473 { KE_KEY, KEY4_CODE, { KEY_WWW } }, /* "WWW" */
474 { KE_END, 0 }
475 };
476
477 static const struct key_entry *keymap = keymap_default;
478
fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id * id)479 static int fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id *id)
480 {
481 pr_info("Identified laptop model '%s'\n", id->ident);
482 keymap = id->driver_data;
483 return 1;
484 }
485
486 static const struct dmi_system_id fujitsu_laptop_dmi_table[] = {
487 {
488 .callback = fujitsu_laptop_dmi_keymap_override,
489 .ident = "Fujitsu Siemens S6410",
490 .matches = {
491 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
492 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
493 },
494 .driver_data = (void *)keymap_s64x0
495 },
496 {
497 .callback = fujitsu_laptop_dmi_keymap_override,
498 .ident = "Fujitsu Siemens S6420",
499 .matches = {
500 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
501 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
502 },
503 .driver_data = (void *)keymap_s64x0
504 },
505 {
506 .callback = fujitsu_laptop_dmi_keymap_override,
507 .ident = "Fujitsu LifeBook P8010",
508 .matches = {
509 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
510 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
511 },
512 .driver_data = (void *)keymap_p8010
513 },
514 {}
515 };
516
acpi_fujitsu_laptop_input_setup(struct acpi_device * device)517 static int acpi_fujitsu_laptop_input_setup(struct acpi_device *device)
518 {
519 struct fujitsu_laptop *priv = acpi_driver_data(device);
520 int ret;
521
522 priv->input = devm_input_allocate_device(&device->dev);
523 if (!priv->input)
524 return -ENOMEM;
525
526 snprintf(priv->phys, sizeof(priv->phys), "%s/input0",
527 acpi_device_hid(device));
528
529 priv->input->name = acpi_device_name(device);
530 priv->input->phys = priv->phys;
531 priv->input->id.bustype = BUS_HOST;
532
533 dmi_check_system(fujitsu_laptop_dmi_table);
534 ret = sparse_keymap_setup(priv->input, keymap, NULL);
535 if (ret)
536 return ret;
537
538 return input_register_device(priv->input);
539 }
540
fujitsu_laptop_platform_add(struct acpi_device * device)541 static int fujitsu_laptop_platform_add(struct acpi_device *device)
542 {
543 struct fujitsu_laptop *priv = acpi_driver_data(device);
544 int ret;
545
546 priv->pf_device = platform_device_alloc("fujitsu-laptop", PLATFORM_DEVID_NONE);
547 if (!priv->pf_device)
548 return -ENOMEM;
549
550 platform_set_drvdata(priv->pf_device, priv);
551
552 ret = platform_device_add(priv->pf_device);
553 if (ret)
554 goto err_put_platform_device;
555
556 ret = sysfs_create_group(&priv->pf_device->dev.kobj,
557 &fujitsu_pf_attribute_group);
558 if (ret)
559 goto err_del_platform_device;
560
561 return 0;
562
563 err_del_platform_device:
564 platform_device_del(priv->pf_device);
565 err_put_platform_device:
566 platform_device_put(priv->pf_device);
567
568 return ret;
569 }
570
fujitsu_laptop_platform_remove(struct acpi_device * device)571 static void fujitsu_laptop_platform_remove(struct acpi_device *device)
572 {
573 struct fujitsu_laptop *priv = acpi_driver_data(device);
574
575 sysfs_remove_group(&priv->pf_device->dev.kobj,
576 &fujitsu_pf_attribute_group);
577 platform_device_unregister(priv->pf_device);
578 }
579
logolamp_set(struct led_classdev * cdev,enum led_brightness brightness)580 static int logolamp_set(struct led_classdev *cdev,
581 enum led_brightness brightness)
582 {
583 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
584 int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
585 int ret;
586
587 if (brightness < LED_HALF)
588 poweron = FUNC_LED_OFF;
589
590 if (brightness < LED_FULL)
591 always = FUNC_LED_OFF;
592
593 ret = call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
594 if (ret < 0)
595 return ret;
596
597 return call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
598 }
599
logolamp_get(struct led_classdev * cdev)600 static enum led_brightness logolamp_get(struct led_classdev *cdev)
601 {
602 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
603 int ret;
604
605 ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
606 if (ret == FUNC_LED_ON)
607 return LED_FULL;
608
609 ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
610 if (ret == FUNC_LED_ON)
611 return LED_HALF;
612
613 return LED_OFF;
614 }
615
kblamps_set(struct led_classdev * cdev,enum led_brightness brightness)616 static int kblamps_set(struct led_classdev *cdev,
617 enum led_brightness brightness)
618 {
619 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
620
621 if (brightness >= LED_FULL)
622 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
623 FUNC_LED_ON);
624 else
625 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
626 FUNC_LED_OFF);
627 }
628
kblamps_get(struct led_classdev * cdev)629 static enum led_brightness kblamps_get(struct led_classdev *cdev)
630 {
631 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
632 enum led_brightness brightness = LED_OFF;
633
634 if (call_fext_func(device,
635 FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
636 brightness = LED_FULL;
637
638 return brightness;
639 }
640
radio_led_set(struct led_classdev * cdev,enum led_brightness brightness)641 static int radio_led_set(struct led_classdev *cdev,
642 enum led_brightness brightness)
643 {
644 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
645
646 if (brightness >= LED_FULL)
647 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
648 RADIO_LED_ON);
649 else
650 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
651 0x0);
652 }
653
radio_led_get(struct led_classdev * cdev)654 static enum led_brightness radio_led_get(struct led_classdev *cdev)
655 {
656 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
657 enum led_brightness brightness = LED_OFF;
658
659 if (call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
660 brightness = LED_FULL;
661
662 return brightness;
663 }
664
eco_led_set(struct led_classdev * cdev,enum led_brightness brightness)665 static int eco_led_set(struct led_classdev *cdev,
666 enum led_brightness brightness)
667 {
668 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
669 int curr;
670
671 curr = call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0);
672 if (brightness >= LED_FULL)
673 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
674 curr | ECO_LED_ON);
675 else
676 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
677 curr & ~ECO_LED_ON);
678 }
679
eco_led_get(struct led_classdev * cdev)680 static enum led_brightness eco_led_get(struct led_classdev *cdev)
681 {
682 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
683 enum led_brightness brightness = LED_OFF;
684
685 if (call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
686 brightness = LED_FULL;
687
688 return brightness;
689 }
690
acpi_fujitsu_laptop_leds_register(struct acpi_device * device)691 static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
692 {
693 struct fujitsu_laptop *priv = acpi_driver_data(device);
694 struct led_classdev *led;
695 int ret;
696
697 if (call_fext_func(device,
698 FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
699 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
700 if (!led)
701 return -ENOMEM;
702
703 led->name = "fujitsu::logolamp";
704 led->brightness_set_blocking = logolamp_set;
705 led->brightness_get = logolamp_get;
706 ret = devm_led_classdev_register(&device->dev, led);
707 if (ret)
708 return ret;
709 }
710
711 if ((call_fext_func(device,
712 FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
713 (call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
714 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
715 if (!led)
716 return -ENOMEM;
717
718 led->name = "fujitsu::kblamps";
719 led->brightness_set_blocking = kblamps_set;
720 led->brightness_get = kblamps_get;
721 ret = devm_led_classdev_register(&device->dev, led);
722 if (ret)
723 return ret;
724 }
725
726 /*
727 * Some Fujitsu laptops have a radio toggle button in place of a slide
728 * switch and all such machines appear to also have an RF LED. Based on
729 * comparing DSDT tables of four Fujitsu Lifebook models (E744, E751,
730 * S7110, S8420; the first one has a radio toggle button, the other
731 * three have slide switches), bit 17 of flags_supported (the value
732 * returned by method S000 of ACPI device FUJ02E3) seems to indicate
733 * whether given model has a radio toggle button.
734 */
735 if (priv->flags_supported & BIT(17)) {
736 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
737 if (!led)
738 return -ENOMEM;
739
740 led->name = "fujitsu::radio_led";
741 led->brightness_set_blocking = radio_led_set;
742 led->brightness_get = radio_led_get;
743 led->default_trigger = "rfkill-any";
744 ret = devm_led_classdev_register(&device->dev, led);
745 if (ret)
746 return ret;
747 }
748
749 /* Support for eco led is not always signaled in bit corresponding
750 * to the bit used to control the led. According to the DSDT table,
751 * bit 14 seems to indicate presence of said led as well.
752 * Confirm by testing the status.
753 */
754 if ((call_fext_func(device, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
755 (call_fext_func(device,
756 FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
757 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
758 if (!led)
759 return -ENOMEM;
760
761 led->name = "fujitsu::eco_led";
762 led->brightness_set_blocking = eco_led_set;
763 led->brightness_get = eco_led_get;
764 ret = devm_led_classdev_register(&device->dev, led);
765 if (ret)
766 return ret;
767 }
768
769 return 0;
770 }
771
acpi_fujitsu_laptop_add(struct acpi_device * device)772 static int acpi_fujitsu_laptop_add(struct acpi_device *device)
773 {
774 struct fujitsu_laptop *priv;
775 int ret, i = 0;
776
777 priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
778 if (!priv)
779 return -ENOMEM;
780
781 WARN_ONCE(fext, "More than one FUJ02E3 ACPI device was found. Driver may not work as intended.");
782 fext = device;
783
784 strcpy(acpi_device_name(device), ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
785 strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
786 device->driver_data = priv;
787
788 /* kfifo */
789 spin_lock_init(&priv->fifo_lock);
790 ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof(int),
791 GFP_KERNEL);
792 if (ret)
793 return ret;
794
795 pr_info("ACPI: %s [%s]\n",
796 acpi_device_name(device), acpi_device_bid(device));
797
798 while (call_fext_func(device, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 &&
799 i++ < MAX_HOTKEY_RINGBUFFER_SIZE)
800 ; /* No action, result is discarded */
801 acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n",
802 i);
803
804 priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0x0, 0x0,
805 0x0);
806
807 /* Make sure our bitmask of supported functions is cleared if the
808 RFKILL function block is not implemented, like on the S7020. */
809 if (priv->flags_supported == UNSUPPORTED_CMD)
810 priv->flags_supported = 0;
811
812 if (priv->flags_supported)
813 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
814 0x0);
815
816 /* Suspect this is a keymap of the application panel, print it */
817 acpi_handle_info(device->handle, "BTNI: [0x%x]\n",
818 call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0));
819
820 /* Sync backlight power status */
821 if (fujitsu_bl && fujitsu_bl->bl_device &&
822 acpi_video_get_backlight_type() == acpi_backlight_vendor) {
823 if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2,
824 BACKLIGHT_PARAM_POWER, 0x0) == BACKLIGHT_OFF)
825 fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
826 else
827 fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;
828 }
829
830 ret = acpi_fujitsu_laptop_input_setup(device);
831 if (ret)
832 goto err_free_fifo;
833
834 ret = acpi_fujitsu_laptop_leds_register(device);
835 if (ret)
836 goto err_free_fifo;
837
838 ret = fujitsu_laptop_platform_add(device);
839 if (ret)
840 goto err_free_fifo;
841
842 return 0;
843
844 err_free_fifo:
845 kfifo_free(&priv->fifo);
846
847 return ret;
848 }
849
acpi_fujitsu_laptop_remove(struct acpi_device * device)850 static void acpi_fujitsu_laptop_remove(struct acpi_device *device)
851 {
852 struct fujitsu_laptop *priv = acpi_driver_data(device);
853
854 fujitsu_laptop_platform_remove(device);
855
856 kfifo_free(&priv->fifo);
857 }
858
acpi_fujitsu_laptop_press(struct acpi_device * device,int scancode)859 static void acpi_fujitsu_laptop_press(struct acpi_device *device, int scancode)
860 {
861 struct fujitsu_laptop *priv = acpi_driver_data(device);
862 int ret;
863
864 ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode,
865 sizeof(scancode), &priv->fifo_lock);
866 if (ret != sizeof(scancode)) {
867 dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n",
868 scancode);
869 return;
870 }
871 sparse_keymap_report_event(priv->input, scancode, 1, false);
872 dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n",
873 scancode);
874 }
875
acpi_fujitsu_laptop_release(struct acpi_device * device)876 static void acpi_fujitsu_laptop_release(struct acpi_device *device)
877 {
878 struct fujitsu_laptop *priv = acpi_driver_data(device);
879 int scancode, ret;
880
881 while (true) {
882 ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode,
883 sizeof(scancode), &priv->fifo_lock);
884 if (ret != sizeof(scancode))
885 return;
886 sparse_keymap_report_event(priv->input, scancode, 0, false);
887 dev_dbg(&priv->input->dev,
888 "Pop scancode from ringbuffer [0x%x]\n", scancode);
889 }
890 }
891
acpi_fujitsu_laptop_notify(struct acpi_device * device,u32 event)892 static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
893 {
894 struct fujitsu_laptop *priv = acpi_driver_data(device);
895 unsigned long flags;
896 int scancode, i = 0;
897 unsigned int irb;
898
899 if (event != ACPI_FUJITSU_NOTIFY_CODE) {
900 acpi_handle_info(device->handle, "Unsupported event [0x%x]\n",
901 event);
902 sparse_keymap_report_event(priv->input, -1, 1, true);
903 return;
904 }
905
906 if (priv->flags_supported)
907 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
908 0x0);
909
910 while ((irb = call_fext_func(device,
911 FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
912 i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
913 scancode = irb & 0x4ff;
914 if (sparse_keymap_entry_from_scancode(priv->input, scancode))
915 acpi_fujitsu_laptop_press(device, scancode);
916 else if (scancode == 0)
917 acpi_fujitsu_laptop_release(device);
918 else
919 acpi_handle_info(device->handle,
920 "Unknown GIRB result [%x]\n", irb);
921 }
922
923 /*
924 * First seen on the Skylake-based Lifebook E736/E746/E756), the
925 * touchpad toggle hotkey (Fn+F4) is handled in software. Other models
926 * have since added additional "soft keys". These are reported in the
927 * status flags queried using FUNC_FLAGS.
928 */
929 if (priv->flags_supported & (FLAG_SOFTKEYS)) {
930 flags = call_fext_func(device, FUNC_FLAGS, 0x1, 0x0, 0x0);
931 flags &= (FLAG_SOFTKEYS);
932 for_each_set_bit(i, &flags, BITS_PER_LONG)
933 sparse_keymap_report_event(priv->input, BIT(i), 1, true);
934 }
935 }
936
937 /* Initialization */
938
939 static const struct acpi_device_id fujitsu_bl_device_ids[] = {
940 {ACPI_FUJITSU_BL_HID, 0},
941 {"", 0},
942 };
943
944 static struct acpi_driver acpi_fujitsu_bl_driver = {
945 .name = ACPI_FUJITSU_BL_DRIVER_NAME,
946 .class = ACPI_FUJITSU_CLASS,
947 .ids = fujitsu_bl_device_ids,
948 .ops = {
949 .add = acpi_fujitsu_bl_add,
950 .notify = acpi_fujitsu_bl_notify,
951 },
952 };
953
954 static const struct acpi_device_id fujitsu_laptop_device_ids[] = {
955 {ACPI_FUJITSU_LAPTOP_HID, 0},
956 {"", 0},
957 };
958
959 static struct acpi_driver acpi_fujitsu_laptop_driver = {
960 .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME,
961 .class = ACPI_FUJITSU_CLASS,
962 .ids = fujitsu_laptop_device_ids,
963 .ops = {
964 .add = acpi_fujitsu_laptop_add,
965 .remove = acpi_fujitsu_laptop_remove,
966 .notify = acpi_fujitsu_laptop_notify,
967 },
968 };
969
970 static const struct acpi_device_id fujitsu_ids[] __used = {
971 {ACPI_FUJITSU_BL_HID, 0},
972 {ACPI_FUJITSU_LAPTOP_HID, 0},
973 {"", 0}
974 };
975 MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
976
fujitsu_init(void)977 static int __init fujitsu_init(void)
978 {
979 int ret;
980
981 ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
982 if (ret)
983 return ret;
984
985 /* Register platform stuff */
986
987 ret = platform_driver_register(&fujitsu_pf_driver);
988 if (ret)
989 goto err_unregister_acpi;
990
991 /* Register laptop driver */
992
993 ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
994 if (ret)
995 goto err_unregister_platform_driver;
996
997 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
998
999 return 0;
1000
1001 err_unregister_platform_driver:
1002 platform_driver_unregister(&fujitsu_pf_driver);
1003 err_unregister_acpi:
1004 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1005
1006 return ret;
1007 }
1008
fujitsu_cleanup(void)1009 static void __exit fujitsu_cleanup(void)
1010 {
1011 acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver);
1012
1013 platform_driver_unregister(&fujitsu_pf_driver);
1014
1015 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1016
1017 pr_info("driver unloaded\n");
1018 }
1019
1020 module_init(fujitsu_init);
1021 module_exit(fujitsu_cleanup);
1022
1023 module_param(use_alt_lcd_levels, int, 0644);
1024 MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)");
1025 module_param(disable_brightness_adjust, bool, 0644);
1026 MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");
1027
1028 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1029 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1030 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1031 MODULE_LICENSE("GPL");
1032