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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 */
112static int use_alt_lcd_levels = -1;
113static bool disable_brightness_adjust;
114
115/* Device controlling the backlight and associated keys */
116struct 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
124static struct fujitsu_bl *fujitsu_bl;
125
126/* Device used to access hotkeys and other features on the laptop */
127struct 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
137static struct acpi_device *fext;
138
139/* Fujitsu ACPI interface function */
140
141static 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
169static 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
208static 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
225static 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
244static 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
251static 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
267static const struct backlight_ops fujitsu_bl_ops = {
268 .get_brightness = bl_get_brightness,
269 .update_status = bl_update_status,
270};
271
272static 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
285static 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
298static 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
311static DEVICE_ATTR_RO(lid);
312static DEVICE_ATTR_RO(dock);
313static DEVICE_ATTR_RO(radios);
314
315static struct attribute *fujitsu_pf_attributes[] = {
316 &dev_attr_lid.attr,
317 &dev_attr_dock.attr,
318 &dev_attr_radios.attr,
319 NULL
320};
321
322static const struct attribute_group fujitsu_pf_attribute_group = {
323 .attrs = fujitsu_pf_attributes
324};
325
326static struct platform_driver fujitsu_pf_driver = {
327 .driver = {
328 .name = "fujitsu-laptop",
329 }
330};
331
332/* ACPI device for LCD brightness control */
333
334static const struct key_entry keymap_backlight[] = {
335 { KE_KEY, true, { KEY_BRIGHTNESSUP } },
336 { KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
337 { KE_END, 0 }
338};
339
340static 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
364static 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
385static 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
418static 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
448static 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
461static 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
469static 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
477static const struct key_entry *keymap = keymap_default;
478
479static 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
486static 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
517static 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
541static 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
563err_del_platform_device:
564 platform_device_del(priv->pf_device);
565err_put_platform_device:
566 platform_device_put(priv->pf_device);
567
568 return ret;
569}
570
571static 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
580static 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
600static 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
616static 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
629static 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
641static 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
654static 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
665static 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
680static 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
691static 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
772static 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
844err_free_fifo:
845 kfifo_free(&priv->fifo);
846
847 return ret;
848}
849
850static 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
859static 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
876static 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
892static 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
939static const struct acpi_device_id fujitsu_bl_device_ids[] = {
940 {ACPI_FUJITSU_BL_HID, 0},
941 {"", 0},
942};
943
944static 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
954static const struct acpi_device_id fujitsu_laptop_device_ids[] = {
955 {ACPI_FUJITSU_LAPTOP_HID, 0},
956 {"", 0},
957};
958
959static 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
970static const struct acpi_device_id fujitsu_ids[] __used = {
971 {ACPI_FUJITSU_BL_HID, 0},
972 {ACPI_FUJITSU_LAPTOP_HID, 0},
973 {"", 0}
974};
975MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
976
977static 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
1001err_unregister_platform_driver:
1002 platform_driver_unregister(&fujitsu_pf_driver);
1003err_unregister_acpi:
1004 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1005
1006 return ret;
1007}
1008
1009static 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
1020module_init(fujitsu_init);
1021module_exit(fujitsu_cleanup);
1022
1023module_param(use_alt_lcd_levels, int, 0644);
1024MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)");
1025module_param(disable_brightness_adjust, bool, 0644);
1026MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");
1027
1028MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1029MODULE_DESCRIPTION("Fujitsu laptop extras support");
1030MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1031MODULE_LICENSE("GPL");
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/input.h>
47#include <linux/input/sparse-keymap.h>
48#include <linux/kfifo.h>
49#include <linux/leds.h>
50#include <linux/platform_device.h>
51#include <linux/power_supply.h>
52#include <acpi/battery.h>
53#include <acpi/video.h>
54
55#define FUJITSU_DRIVER_VERSION "0.6.0"
56
57#define FUJITSU_LCD_N_LEVELS 8
58
59#define ACPI_FUJITSU_CLASS "fujitsu"
60#define ACPI_FUJITSU_BL_HID "FUJ02B1"
61#define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
62#define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1"
63#define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3"
64#define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
65#define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3"
66
67#define ACPI_FUJITSU_NOTIFY_CODE 0x80
68
69/* FUNC interface - command values */
70#define FUNC_FLAGS BIT(12)
71#define FUNC_LEDS (BIT(12) | BIT(0))
72#define FUNC_BUTTONS (BIT(12) | BIT(1))
73#define FUNC_BACKLIGHT (BIT(12) | BIT(2))
74
75/* FUNC interface - responses */
76#define UNSUPPORTED_CMD 0x80000000
77
78/* FUNC interface - status flags */
79#define FLAG_RFKILL BIT(5)
80#define FLAG_LID BIT(8)
81#define FLAG_DOCK BIT(9)
82#define FLAG_TOUCHPAD_TOGGLE BIT(26)
83#define FLAG_MICMUTE BIT(29)
84#define FLAG_SOFTKEYS (FLAG_RFKILL | FLAG_TOUCHPAD_TOGGLE | FLAG_MICMUTE)
85
86/* FUNC interface - LED control */
87#define FUNC_LED_OFF BIT(0)
88#define FUNC_LED_ON (BIT(0) | BIT(16) | BIT(17))
89#define LOGOLAMP_POWERON BIT(13)
90#define LOGOLAMP_ALWAYS BIT(14)
91#define KEYBOARD_LAMPS BIT(8)
92#define RADIO_LED_ON BIT(5)
93#define ECO_LED BIT(16)
94#define ECO_LED_ON BIT(19)
95
96/* FUNC interface - backlight power control */
97#define BACKLIGHT_PARAM_POWER BIT(2)
98#define BACKLIGHT_OFF (BIT(0) | BIT(1))
99#define BACKLIGHT_ON 0
100
101/* FUNC interface - battery control interface */
102#define FUNC_S006_METHOD 0x1006
103#define CHARGE_CONTROL_RW 0x21
104
105/* Scancodes read from the GIRB register */
106#define KEY1_CODE 0x410
107#define KEY2_CODE 0x411
108#define KEY3_CODE 0x412
109#define KEY4_CODE 0x413
110#define KEY5_CODE 0x420
111
112/* Hotkey ringbuffer limits */
113#define MAX_HOTKEY_RINGBUFFER_SIZE 100
114#define RINGBUFFERSIZE 40
115
116/* Module parameters */
117static int use_alt_lcd_levels = -1;
118static bool disable_brightness_adjust;
119
120/* Device controlling the backlight and associated keys */
121struct fujitsu_bl {
122 struct input_dev *input;
123 char phys[32];
124 struct backlight_device *bl_device;
125 unsigned int max_brightness;
126 unsigned int brightness_level;
127};
128
129static struct fujitsu_bl *fujitsu_bl;
130
131/* Device used to access hotkeys and other features on the laptop */
132struct fujitsu_laptop {
133 struct input_dev *input;
134 char phys[32];
135 struct platform_device *pf_device;
136 struct kfifo fifo;
137 spinlock_t fifo_lock;
138 int flags_supported;
139 int flags_state;
140 bool charge_control_supported;
141};
142
143static struct acpi_device *fext;
144
145/* Fujitsu ACPI interface function */
146
147static int call_fext_func(struct acpi_device *device,
148 int func, int op, int feature, int state)
149{
150 union acpi_object params[4] = {
151 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
152 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = op },
153 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature },
154 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = state }
155 };
156 struct acpi_object_list arg_list = { 4, params };
157 unsigned long long value;
158 acpi_status status;
159
160 status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,
161 &value);
162 if (ACPI_FAILURE(status)) {
163 acpi_handle_err(device->handle, "Failed to evaluate FUNC\n");
164 return -ENODEV;
165 }
166
167 acpi_handle_debug(device->handle,
168 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
169 func, op, feature, state, (int)value);
170 return value;
171}
172
173/* Battery charge control code */
174static ssize_t charge_control_end_threshold_store(struct device *dev,
175 struct device_attribute *attr,
176 const char *buf, size_t count)
177{
178 int cc_end_value, s006_cc_return;
179 int value, ret;
180
181 ret = kstrtouint(buf, 10, &value);
182 if (ret)
183 return ret;
184
185 if (value < 50 || value > 100)
186 return -EINVAL;
187
188 cc_end_value = value * 0x100 + 0x20;
189 s006_cc_return = call_fext_func(fext, FUNC_S006_METHOD,
190 CHARGE_CONTROL_RW, cc_end_value, 0x0);
191 if (s006_cc_return < 0)
192 return s006_cc_return;
193 /*
194 * The S006 0x21 method returns 0x00 in case the provided value
195 * is invalid.
196 */
197 if (s006_cc_return == 0x00)
198 return -EINVAL;
199
200 return count;
201}
202
203static ssize_t charge_control_end_threshold_show(struct device *dev,
204 struct device_attribute *attr,
205 char *buf)
206{
207 int status;
208
209 status = call_fext_func(fext, FUNC_S006_METHOD,
210 CHARGE_CONTROL_RW, 0x21, 0x0);
211 if (status < 0)
212 return status;
213
214 return sysfs_emit(buf, "%d\n", status);
215}
216
217static DEVICE_ATTR_RW(charge_control_end_threshold);
218
219/* ACPI battery hook */
220static int fujitsu_battery_add_hook(struct power_supply *battery,
221 struct acpi_battery_hook *hook)
222{
223 return device_create_file(&battery->dev,
224 &dev_attr_charge_control_end_threshold);
225}
226
227static int fujitsu_battery_remove_hook(struct power_supply *battery,
228 struct acpi_battery_hook *hook)
229{
230 device_remove_file(&battery->dev,
231 &dev_attr_charge_control_end_threshold);
232
233 return 0;
234}
235
236static struct acpi_battery_hook battery_hook = {
237 .add_battery = fujitsu_battery_add_hook,
238 .remove_battery = fujitsu_battery_remove_hook,
239 .name = "Fujitsu Battery Extension",
240};
241
242/*
243 * These functions are intended to be called from acpi_fujitsu_laptop_add and
244 * acpi_fujitsu_laptop_remove.
245 */
246static int fujitsu_battery_charge_control_add(struct acpi_device *device)
247{
248 struct fujitsu_laptop *priv = acpi_driver_data(device);
249 int s006_cc_return;
250
251 priv->charge_control_supported = false;
252 /*
253 * Check if the S006 0x21 method exists by trying to get the current
254 * battery charge limit.
255 */
256 s006_cc_return = call_fext_func(fext, FUNC_S006_METHOD,
257 CHARGE_CONTROL_RW, 0x21, 0x0);
258 if (s006_cc_return < 0)
259 return s006_cc_return;
260 if (s006_cc_return == UNSUPPORTED_CMD)
261 return -ENODEV;
262
263 priv->charge_control_supported = true;
264 battery_hook_register(&battery_hook);
265
266 return 0;
267}
268
269static void fujitsu_battery_charge_control_remove(struct acpi_device *device)
270{
271 struct fujitsu_laptop *priv = acpi_driver_data(device);
272
273 if (priv->charge_control_supported)
274 battery_hook_unregister(&battery_hook);
275}
276
277/* Hardware access for LCD brightness control */
278
279static int set_lcd_level(struct acpi_device *device, int level)
280{
281 struct fujitsu_bl *priv = acpi_driver_data(device);
282 acpi_status status;
283 char *method;
284
285 switch (use_alt_lcd_levels) {
286 case -1:
287 if (acpi_has_method(device->handle, "SBL2"))
288 method = "SBL2";
289 else
290 method = "SBLL";
291 break;
292 case 1:
293 method = "SBL2";
294 break;
295 default:
296 method = "SBLL";
297 break;
298 }
299
300 acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method,
301 level);
302
303 if (level < 0 || level >= priv->max_brightness)
304 return -EINVAL;
305
306 status = acpi_execute_simple_method(device->handle, method, level);
307 if (ACPI_FAILURE(status)) {
308 acpi_handle_err(device->handle, "Failed to evaluate %s\n",
309 method);
310 return -ENODEV;
311 }
312
313 priv->brightness_level = level;
314
315 return 0;
316}
317
318static int get_lcd_level(struct acpi_device *device)
319{
320 struct fujitsu_bl *priv = acpi_driver_data(device);
321 unsigned long long state = 0;
322 acpi_status status = AE_OK;
323
324 acpi_handle_debug(device->handle, "get lcd level via GBLL\n");
325
326 status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state);
327 if (ACPI_FAILURE(status))
328 return 0;
329
330 priv->brightness_level = state & 0x0fffffff;
331
332 return priv->brightness_level;
333}
334
335static int get_max_brightness(struct acpi_device *device)
336{
337 struct fujitsu_bl *priv = acpi_driver_data(device);
338 unsigned long long state = 0;
339 acpi_status status = AE_OK;
340
341 acpi_handle_debug(device->handle, "get max lcd level via RBLL\n");
342
343 status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state);
344 if (ACPI_FAILURE(status))
345 return -1;
346
347 priv->max_brightness = state;
348
349 return priv->max_brightness;
350}
351
352/* Backlight device stuff */
353
354static int bl_get_brightness(struct backlight_device *b)
355{
356 struct acpi_device *device = bl_get_data(b);
357
358 return b->props.power == BACKLIGHT_POWER_OFF ? 0 : get_lcd_level(device);
359}
360
361static int bl_update_status(struct backlight_device *b)
362{
363 struct acpi_device *device = bl_get_data(b);
364
365 if (fext) {
366 if (b->props.power == BACKLIGHT_POWER_OFF)
367 call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
368 BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
369 else
370 call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
371 BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
372 }
373
374 return set_lcd_level(device, b->props.brightness);
375}
376
377static const struct backlight_ops fujitsu_bl_ops = {
378 .get_brightness = bl_get_brightness,
379 .update_status = bl_update_status,
380};
381
382static ssize_t lid_show(struct device *dev, struct device_attribute *attr,
383 char *buf)
384{
385 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
386
387 if (!(priv->flags_supported & FLAG_LID))
388 return sysfs_emit(buf, "unknown\n");
389 if (priv->flags_state & FLAG_LID)
390 return sysfs_emit(buf, "open\n");
391 else
392 return sysfs_emit(buf, "closed\n");
393}
394
395static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
396 char *buf)
397{
398 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
399
400 if (!(priv->flags_supported & FLAG_DOCK))
401 return sysfs_emit(buf, "unknown\n");
402 if (priv->flags_state & FLAG_DOCK)
403 return sysfs_emit(buf, "docked\n");
404 else
405 return sysfs_emit(buf, "undocked\n");
406}
407
408static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
409 char *buf)
410{
411 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
412
413 if (!(priv->flags_supported & FLAG_RFKILL))
414 return sysfs_emit(buf, "unknown\n");
415 if (priv->flags_state & FLAG_RFKILL)
416 return sysfs_emit(buf, "on\n");
417 else
418 return sysfs_emit(buf, "killed\n");
419}
420
421static DEVICE_ATTR_RO(lid);
422static DEVICE_ATTR_RO(dock);
423static DEVICE_ATTR_RO(radios);
424
425static struct attribute *fujitsu_pf_attributes[] = {
426 &dev_attr_lid.attr,
427 &dev_attr_dock.attr,
428 &dev_attr_radios.attr,
429 NULL
430};
431
432static const struct attribute_group fujitsu_pf_attribute_group = {
433 .attrs = fujitsu_pf_attributes
434};
435
436static struct platform_driver fujitsu_pf_driver = {
437 .driver = {
438 .name = "fujitsu-laptop",
439 }
440};
441
442/* ACPI device for LCD brightness control */
443
444static const struct key_entry keymap_backlight[] = {
445 { KE_KEY, true, { KEY_BRIGHTNESSUP } },
446 { KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
447 { KE_END, 0 }
448};
449
450static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
451{
452 struct fujitsu_bl *priv = acpi_driver_data(device);
453 int ret;
454
455 priv->input = devm_input_allocate_device(&device->dev);
456 if (!priv->input)
457 return -ENOMEM;
458
459 snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0",
460 acpi_device_hid(device));
461
462 priv->input->name = acpi_device_name(device);
463 priv->input->phys = priv->phys;
464 priv->input->id.bustype = BUS_HOST;
465 priv->input->id.product = 0x06;
466
467 ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);
468 if (ret)
469 return ret;
470
471 return input_register_device(priv->input);
472}
473
474static int fujitsu_backlight_register(struct acpi_device *device)
475{
476 struct fujitsu_bl *priv = acpi_driver_data(device);
477 const struct backlight_properties props = {
478 .brightness = priv->brightness_level,
479 .max_brightness = priv->max_brightness - 1,
480 .type = BACKLIGHT_PLATFORM
481 };
482 struct backlight_device *bd;
483
484 bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop",
485 &device->dev, device,
486 &fujitsu_bl_ops, &props);
487 if (IS_ERR(bd))
488 return PTR_ERR(bd);
489
490 priv->bl_device = bd;
491
492 return 0;
493}
494
495static int acpi_fujitsu_bl_add(struct acpi_device *device)
496{
497 struct fujitsu_bl *priv;
498 int ret;
499
500 if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
501 return -ENODEV;
502
503 priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
504 if (!priv)
505 return -ENOMEM;
506
507 fujitsu_bl = priv;
508 strcpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME);
509 strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
510 device->driver_data = priv;
511
512 pr_info("ACPI: %s [%s]\n",
513 acpi_device_name(device), acpi_device_bid(device));
514
515 if (get_max_brightness(device) <= 0)
516 priv->max_brightness = FUJITSU_LCD_N_LEVELS;
517 get_lcd_level(device);
518
519 ret = acpi_fujitsu_bl_input_setup(device);
520 if (ret)
521 return ret;
522
523 return fujitsu_backlight_register(device);
524}
525
526/* Brightness notify */
527
528static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
529{
530 struct fujitsu_bl *priv = acpi_driver_data(device);
531 int oldb, newb;
532
533 if (event != ACPI_FUJITSU_NOTIFY_CODE) {
534 acpi_handle_info(device->handle, "unsupported event [0x%x]\n",
535 event);
536 sparse_keymap_report_event(priv->input, -1, 1, true);
537 return;
538 }
539
540 oldb = priv->brightness_level;
541 get_lcd_level(device);
542 newb = priv->brightness_level;
543
544 acpi_handle_debug(device->handle,
545 "brightness button event [%i -> %i]\n", oldb, newb);
546
547 if (oldb == newb)
548 return;
549
550 if (!disable_brightness_adjust)
551 set_lcd_level(device, newb);
552
553 sparse_keymap_report_event(priv->input, oldb < newb, 1, true);
554}
555
556/* ACPI device for hotkey handling */
557
558static const struct key_entry keymap_default[] = {
559 { KE_KEY, KEY1_CODE, { KEY_PROG1 } },
560 { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
561 { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
562 { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
563 { KE_KEY, KEY5_CODE, { KEY_RFKILL } },
564 /* Soft keys read from status flags */
565 { KE_KEY, FLAG_RFKILL, { KEY_RFKILL } },
566 { KE_KEY, FLAG_TOUCHPAD_TOGGLE, { KEY_TOUCHPAD_TOGGLE } },
567 { KE_KEY, FLAG_MICMUTE, { KEY_MICMUTE } },
568 { KE_END, 0 }
569};
570
571static const struct key_entry keymap_s64x0[] = {
572 { KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } }, /* "Lock" */
573 { KE_KEY, KEY2_CODE, { KEY_HELP } }, /* "Mobility Center */
574 { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
575 { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
576 { KE_END, 0 }
577};
578
579static const struct key_entry keymap_p8010[] = {
580 { KE_KEY, KEY1_CODE, { KEY_HELP } }, /* "Support" */
581 { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
582 { KE_KEY, KEY3_CODE, { KEY_SWITCHVIDEOMODE } }, /* "Presentation" */
583 { KE_KEY, KEY4_CODE, { KEY_WWW } }, /* "WWW" */
584 { KE_END, 0 }
585};
586
587static const struct key_entry *keymap = keymap_default;
588
589static int fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id *id)
590{
591 pr_info("Identified laptop model '%s'\n", id->ident);
592 keymap = id->driver_data;
593 return 1;
594}
595
596static const struct dmi_system_id fujitsu_laptop_dmi_table[] = {
597 {
598 .callback = fujitsu_laptop_dmi_keymap_override,
599 .ident = "Fujitsu Siemens S6410",
600 .matches = {
601 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
602 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
603 },
604 .driver_data = (void *)keymap_s64x0
605 },
606 {
607 .callback = fujitsu_laptop_dmi_keymap_override,
608 .ident = "Fujitsu Siemens S6420",
609 .matches = {
610 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
611 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
612 },
613 .driver_data = (void *)keymap_s64x0
614 },
615 {
616 .callback = fujitsu_laptop_dmi_keymap_override,
617 .ident = "Fujitsu LifeBook P8010",
618 .matches = {
619 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
620 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
621 },
622 .driver_data = (void *)keymap_p8010
623 },
624 {}
625};
626
627static int acpi_fujitsu_laptop_input_setup(struct acpi_device *device)
628{
629 struct fujitsu_laptop *priv = acpi_driver_data(device);
630 int ret;
631
632 priv->input = devm_input_allocate_device(&device->dev);
633 if (!priv->input)
634 return -ENOMEM;
635
636 snprintf(priv->phys, sizeof(priv->phys), "%s/input0",
637 acpi_device_hid(device));
638
639 priv->input->name = acpi_device_name(device);
640 priv->input->phys = priv->phys;
641 priv->input->id.bustype = BUS_HOST;
642
643 dmi_check_system(fujitsu_laptop_dmi_table);
644 ret = sparse_keymap_setup(priv->input, keymap, NULL);
645 if (ret)
646 return ret;
647
648 return input_register_device(priv->input);
649}
650
651static int fujitsu_laptop_platform_add(struct acpi_device *device)
652{
653 struct fujitsu_laptop *priv = acpi_driver_data(device);
654 int ret;
655
656 priv->pf_device = platform_device_alloc("fujitsu-laptop", PLATFORM_DEVID_NONE);
657 if (!priv->pf_device)
658 return -ENOMEM;
659
660 platform_set_drvdata(priv->pf_device, priv);
661
662 ret = platform_device_add(priv->pf_device);
663 if (ret)
664 goto err_put_platform_device;
665
666 ret = sysfs_create_group(&priv->pf_device->dev.kobj,
667 &fujitsu_pf_attribute_group);
668 if (ret)
669 goto err_del_platform_device;
670
671 return 0;
672
673err_del_platform_device:
674 platform_device_del(priv->pf_device);
675err_put_platform_device:
676 platform_device_put(priv->pf_device);
677
678 return ret;
679}
680
681static void fujitsu_laptop_platform_remove(struct acpi_device *device)
682{
683 struct fujitsu_laptop *priv = acpi_driver_data(device);
684
685 sysfs_remove_group(&priv->pf_device->dev.kobj,
686 &fujitsu_pf_attribute_group);
687 platform_device_unregister(priv->pf_device);
688}
689
690static int logolamp_set(struct led_classdev *cdev,
691 enum led_brightness brightness)
692{
693 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
694 int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
695 int ret;
696
697 if (brightness < LED_HALF)
698 poweron = FUNC_LED_OFF;
699
700 if (brightness < LED_FULL)
701 always = FUNC_LED_OFF;
702
703 ret = call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
704 if (ret < 0)
705 return ret;
706
707 return call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
708}
709
710static enum led_brightness logolamp_get(struct led_classdev *cdev)
711{
712 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
713 int ret;
714
715 ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
716 if (ret == FUNC_LED_ON)
717 return LED_FULL;
718
719 ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
720 if (ret == FUNC_LED_ON)
721 return LED_HALF;
722
723 return LED_OFF;
724}
725
726static int kblamps_set(struct led_classdev *cdev,
727 enum led_brightness brightness)
728{
729 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
730
731 if (brightness >= LED_FULL)
732 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
733 FUNC_LED_ON);
734 else
735 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
736 FUNC_LED_OFF);
737}
738
739static enum led_brightness kblamps_get(struct led_classdev *cdev)
740{
741 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
742 enum led_brightness brightness = LED_OFF;
743
744 if (call_fext_func(device,
745 FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
746 brightness = LED_FULL;
747
748 return brightness;
749}
750
751static int radio_led_set(struct led_classdev *cdev,
752 enum led_brightness brightness)
753{
754 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
755
756 if (brightness >= LED_FULL)
757 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
758 RADIO_LED_ON);
759 else
760 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
761 0x0);
762}
763
764static enum led_brightness radio_led_get(struct led_classdev *cdev)
765{
766 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
767 enum led_brightness brightness = LED_OFF;
768
769 if (call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
770 brightness = LED_FULL;
771
772 return brightness;
773}
774
775static int eco_led_set(struct led_classdev *cdev,
776 enum led_brightness brightness)
777{
778 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
779 int curr;
780
781 curr = call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0);
782 if (brightness >= LED_FULL)
783 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
784 curr | ECO_LED_ON);
785 else
786 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
787 curr & ~ECO_LED_ON);
788}
789
790static enum led_brightness eco_led_get(struct led_classdev *cdev)
791{
792 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
793 enum led_brightness brightness = LED_OFF;
794
795 if (call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
796 brightness = LED_FULL;
797
798 return brightness;
799}
800
801static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
802{
803 struct fujitsu_laptop *priv = acpi_driver_data(device);
804 struct led_classdev *led;
805 int ret;
806
807 if (call_fext_func(device,
808 FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
809 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
810 if (!led)
811 return -ENOMEM;
812
813 led->name = "fujitsu::logolamp";
814 led->brightness_set_blocking = logolamp_set;
815 led->brightness_get = logolamp_get;
816 ret = devm_led_classdev_register(&device->dev, led);
817 if (ret)
818 return ret;
819 }
820
821 if ((call_fext_func(device,
822 FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
823 (call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
824 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
825 if (!led)
826 return -ENOMEM;
827
828 led->name = "fujitsu::kblamps";
829 led->brightness_set_blocking = kblamps_set;
830 led->brightness_get = kblamps_get;
831 ret = devm_led_classdev_register(&device->dev, led);
832 if (ret)
833 return ret;
834 }
835
836 /*
837 * Some Fujitsu laptops have a radio toggle button in place of a slide
838 * switch and all such machines appear to also have an RF LED. Based on
839 * comparing DSDT tables of four Fujitsu Lifebook models (E744, E751,
840 * S7110, S8420; the first one has a radio toggle button, the other
841 * three have slide switches), bit 17 of flags_supported (the value
842 * returned by method S000 of ACPI device FUJ02E3) seems to indicate
843 * whether given model has a radio toggle button.
844 */
845 if (priv->flags_supported & BIT(17)) {
846 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
847 if (!led)
848 return -ENOMEM;
849
850 led->name = "fujitsu::radio_led";
851 led->brightness_set_blocking = radio_led_set;
852 led->brightness_get = radio_led_get;
853 led->default_trigger = "rfkill-any";
854 ret = devm_led_classdev_register(&device->dev, led);
855 if (ret)
856 return ret;
857 }
858
859 /* Support for eco led is not always signaled in bit corresponding
860 * to the bit used to control the led. According to the DSDT table,
861 * bit 14 seems to indicate presence of said led as well.
862 * Confirm by testing the status.
863 */
864 if ((call_fext_func(device, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
865 (call_fext_func(device,
866 FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
867 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
868 if (!led)
869 return -ENOMEM;
870
871 led->name = "fujitsu::eco_led";
872 led->brightness_set_blocking = eco_led_set;
873 led->brightness_get = eco_led_get;
874 ret = devm_led_classdev_register(&device->dev, led);
875 if (ret)
876 return ret;
877 }
878
879 return 0;
880}
881
882static int acpi_fujitsu_laptop_add(struct acpi_device *device)
883{
884 struct fujitsu_laptop *priv;
885 int ret, i = 0;
886
887 priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
888 if (!priv)
889 return -ENOMEM;
890
891 WARN_ONCE(fext, "More than one FUJ02E3 ACPI device was found. Driver may not work as intended.");
892 fext = device;
893
894 strcpy(acpi_device_name(device), ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
895 strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
896 device->driver_data = priv;
897
898 /* kfifo */
899 spin_lock_init(&priv->fifo_lock);
900 ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof(int),
901 GFP_KERNEL);
902 if (ret)
903 return ret;
904
905 pr_info("ACPI: %s [%s]\n",
906 acpi_device_name(device), acpi_device_bid(device));
907
908 while (call_fext_func(device, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 &&
909 i++ < MAX_HOTKEY_RINGBUFFER_SIZE)
910 ; /* No action, result is discarded */
911 acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n",
912 i);
913
914 priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0x0, 0x0,
915 0x0);
916
917 /* Make sure our bitmask of supported functions is cleared if the
918 RFKILL function block is not implemented, like on the S7020. */
919 if (priv->flags_supported == UNSUPPORTED_CMD)
920 priv->flags_supported = 0;
921
922 if (priv->flags_supported)
923 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
924 0x0);
925
926 /* Suspect this is a keymap of the application panel, print it */
927 acpi_handle_info(device->handle, "BTNI: [0x%x]\n",
928 call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0));
929
930 /* Sync backlight power status */
931 if (fujitsu_bl && fujitsu_bl->bl_device &&
932 acpi_video_get_backlight_type() == acpi_backlight_vendor) {
933 if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2,
934 BACKLIGHT_PARAM_POWER, 0x0) == BACKLIGHT_OFF)
935 fujitsu_bl->bl_device->props.power = BACKLIGHT_POWER_OFF;
936 else
937 fujitsu_bl->bl_device->props.power = BACKLIGHT_POWER_ON;
938 }
939
940 ret = acpi_fujitsu_laptop_input_setup(device);
941 if (ret)
942 goto err_free_fifo;
943
944 ret = acpi_fujitsu_laptop_leds_register(device);
945 if (ret)
946 goto err_free_fifo;
947
948 ret = fujitsu_laptop_platform_add(device);
949 if (ret)
950 goto err_free_fifo;
951
952 ret = fujitsu_battery_charge_control_add(device);
953 if (ret < 0)
954 pr_warn("Unable to register battery charge control: %d\n", ret);
955
956 return 0;
957
958err_free_fifo:
959 kfifo_free(&priv->fifo);
960
961 return ret;
962}
963
964static void acpi_fujitsu_laptop_remove(struct acpi_device *device)
965{
966 struct fujitsu_laptop *priv = acpi_driver_data(device);
967
968 fujitsu_battery_charge_control_remove(device);
969
970 fujitsu_laptop_platform_remove(device);
971
972 kfifo_free(&priv->fifo);
973}
974
975static void acpi_fujitsu_laptop_press(struct acpi_device *device, int scancode)
976{
977 struct fujitsu_laptop *priv = acpi_driver_data(device);
978 int ret;
979
980 ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode,
981 sizeof(scancode), &priv->fifo_lock);
982 if (ret != sizeof(scancode)) {
983 dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n",
984 scancode);
985 return;
986 }
987 sparse_keymap_report_event(priv->input, scancode, 1, false);
988 dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n",
989 scancode);
990}
991
992static void acpi_fujitsu_laptop_release(struct acpi_device *device)
993{
994 struct fujitsu_laptop *priv = acpi_driver_data(device);
995 int scancode, ret;
996
997 while (true) {
998 ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode,
999 sizeof(scancode), &priv->fifo_lock);
1000 if (ret != sizeof(scancode))
1001 return;
1002 sparse_keymap_report_event(priv->input, scancode, 0, false);
1003 dev_dbg(&priv->input->dev,
1004 "Pop scancode from ringbuffer [0x%x]\n", scancode);
1005 }
1006}
1007
1008static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
1009{
1010 struct fujitsu_laptop *priv = acpi_driver_data(device);
1011 unsigned long flags;
1012 int scancode, i = 0;
1013 unsigned int irb;
1014
1015 if (event != ACPI_FUJITSU_NOTIFY_CODE) {
1016 acpi_handle_info(device->handle, "Unsupported event [0x%x]\n",
1017 event);
1018 sparse_keymap_report_event(priv->input, -1, 1, true);
1019 return;
1020 }
1021
1022 if (priv->flags_supported)
1023 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
1024 0x0);
1025
1026 while ((irb = call_fext_func(device,
1027 FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
1028 i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
1029 scancode = irb & 0x4ff;
1030 if (sparse_keymap_entry_from_scancode(priv->input, scancode))
1031 acpi_fujitsu_laptop_press(device, scancode);
1032 else if (scancode == 0)
1033 acpi_fujitsu_laptop_release(device);
1034 else
1035 acpi_handle_info(device->handle,
1036 "Unknown GIRB result [%x]\n", irb);
1037 }
1038
1039 /*
1040 * First seen on the Skylake-based Lifebook E736/E746/E756), the
1041 * touchpad toggle hotkey (Fn+F4) is handled in software. Other models
1042 * have since added additional "soft keys". These are reported in the
1043 * status flags queried using FUNC_FLAGS.
1044 */
1045 if (priv->flags_supported & (FLAG_SOFTKEYS)) {
1046 flags = call_fext_func(device, FUNC_FLAGS, 0x1, 0x0, 0x0);
1047 flags &= (FLAG_SOFTKEYS);
1048 for_each_set_bit(i, &flags, BITS_PER_LONG)
1049 sparse_keymap_report_event(priv->input, BIT(i), 1, true);
1050 }
1051}
1052
1053/* Initialization */
1054
1055static const struct acpi_device_id fujitsu_bl_device_ids[] = {
1056 {ACPI_FUJITSU_BL_HID, 0},
1057 {"", 0},
1058};
1059
1060static struct acpi_driver acpi_fujitsu_bl_driver = {
1061 .name = ACPI_FUJITSU_BL_DRIVER_NAME,
1062 .class = ACPI_FUJITSU_CLASS,
1063 .ids = fujitsu_bl_device_ids,
1064 .ops = {
1065 .add = acpi_fujitsu_bl_add,
1066 .notify = acpi_fujitsu_bl_notify,
1067 },
1068};
1069
1070static const struct acpi_device_id fujitsu_laptop_device_ids[] = {
1071 {ACPI_FUJITSU_LAPTOP_HID, 0},
1072 {"", 0},
1073};
1074
1075static struct acpi_driver acpi_fujitsu_laptop_driver = {
1076 .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME,
1077 .class = ACPI_FUJITSU_CLASS,
1078 .ids = fujitsu_laptop_device_ids,
1079 .ops = {
1080 .add = acpi_fujitsu_laptop_add,
1081 .remove = acpi_fujitsu_laptop_remove,
1082 .notify = acpi_fujitsu_laptop_notify,
1083 },
1084};
1085
1086static const struct acpi_device_id fujitsu_ids[] __used = {
1087 {ACPI_FUJITSU_BL_HID, 0},
1088 {ACPI_FUJITSU_LAPTOP_HID, 0},
1089 {"", 0}
1090};
1091MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1092
1093static int __init fujitsu_init(void)
1094{
1095 int ret;
1096
1097 ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
1098 if (ret)
1099 return ret;
1100
1101 /* Register platform stuff */
1102
1103 ret = platform_driver_register(&fujitsu_pf_driver);
1104 if (ret)
1105 goto err_unregister_acpi;
1106
1107 /* Register laptop driver */
1108
1109 ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
1110 if (ret)
1111 goto err_unregister_platform_driver;
1112
1113 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1114
1115 return 0;
1116
1117err_unregister_platform_driver:
1118 platform_driver_unregister(&fujitsu_pf_driver);
1119err_unregister_acpi:
1120 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1121
1122 return ret;
1123}
1124
1125static void __exit fujitsu_cleanup(void)
1126{
1127 acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver);
1128
1129 platform_driver_unregister(&fujitsu_pf_driver);
1130
1131 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1132
1133 pr_info("driver unloaded\n");
1134}
1135
1136module_init(fujitsu_init);
1137module_exit(fujitsu_cleanup);
1138
1139module_param(use_alt_lcd_levels, int, 0644);
1140MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)");
1141module_param(disable_brightness_adjust, bool, 0644);
1142MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");
1143
1144MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1145MODULE_DESCRIPTION("Fujitsu laptop extras support");
1146MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1147MODULE_LICENSE("GPL");