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1/*-*-linux-c-*-*/
2
3/*
4 Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net>
5 Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
6 Copyright (C) 2008 Tony Vroon <tony@linx.net>
7 Based on earlier work:
8 Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
9 Adrian Yee <brewt-fujitsu@brewt.org>
10
11 Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
12 by its respective authors.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful, but
20 WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
27 02110-1301, USA.
28 */
29
30/*
31 * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
32 * features made available on a range of Fujitsu laptops including the
33 * P2xxx/P5xxx/S6xxx/S7xxx series.
34 *
35 * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/;
36 * others may be added at a later date.
37 *
38 * lcd_level - Screen brightness: contains a single integer in the
39 * range 0..7. (rw)
40 *
41 * In addition to these platform device attributes the driver
42 * registers itself in the Linux backlight control subsystem and is
43 * available to userspace under /sys/class/backlight/fujitsu-laptop/.
44 *
45 * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
46 * also supported by this driver.
47 *
48 * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
49 * P8010. It should work on most P-series and S-series Lifebooks, but
50 * YMMV.
51 *
52 * The module parameter use_alt_lcd_levels switches between different ACPI
53 * brightness controls which are used by different Fujitsu laptops. In most
54 * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
55 * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
56 *
57 */
58
59#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
60
61#include <linux/module.h>
62#include <linux/kernel.h>
63#include <linux/init.h>
64#include <linux/acpi.h>
65#include <linux/dmi.h>
66#include <linux/backlight.h>
67#include <linux/fb.h>
68#include <linux/input.h>
69#include <linux/kfifo.h>
70#include <linux/platform_device.h>
71#include <linux/slab.h>
72#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
73#include <linux/leds.h>
74#endif
75#include <acpi/video.h>
76
77#define FUJITSU_DRIVER_VERSION "0.6.0"
78
79#define FUJITSU_LCD_N_LEVELS 8
80
81#define ACPI_FUJITSU_CLASS "fujitsu"
82#define ACPI_FUJITSU_HID "FUJ02B1"
83#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
84#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
85#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
86#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
87#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
88
89#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
90
91#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
92#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
93
94/* FUNC interface - command values */
95#define FUNC_RFKILL 0x1000
96#define FUNC_LEDS 0x1001
97#define FUNC_BUTTONS 0x1002
98#define FUNC_BACKLIGHT 0x1004
99
100/* FUNC interface - responses */
101#define UNSUPPORTED_CMD 0x80000000
102
103#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
104/* FUNC interface - LED control */
105#define FUNC_LED_OFF 0x1
106#define FUNC_LED_ON 0x30001
107#define KEYBOARD_LAMPS 0x100
108#define LOGOLAMP_POWERON 0x2000
109#define LOGOLAMP_ALWAYS 0x4000
110#endif
111
112/* Hotkey details */
113#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
114#define KEY2_CODE 0x411
115#define KEY3_CODE 0x412
116#define KEY4_CODE 0x413
117#define KEY5_CODE 0x420
118
119#define MAX_HOTKEY_RINGBUFFER_SIZE 100
120#define RINGBUFFERSIZE 40
121
122/* Debugging */
123#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
124#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
125#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
126#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
127#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
128
129#define FUJLAPTOP_DBG_ALL 0xffff
130#define FUJLAPTOP_DBG_ERROR 0x0001
131#define FUJLAPTOP_DBG_WARN 0x0002
132#define FUJLAPTOP_DBG_INFO 0x0004
133#define FUJLAPTOP_DBG_TRACE 0x0008
134
135#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
136#define vdbg_printk(a_dbg_level, format, arg...) \
137 do { if (dbg_level & a_dbg_level) \
138 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
139 } while (0)
140#else
141#define vdbg_printk(a_dbg_level, format, arg...) \
142 do { } while (0)
143#endif
144
145/* Device controlling the backlight and associated keys */
146struct fujitsu_t {
147 acpi_handle acpi_handle;
148 struct acpi_device *dev;
149 struct input_dev *input;
150 char phys[32];
151 struct backlight_device *bl_device;
152 struct platform_device *pf_device;
153 int keycode1, keycode2, keycode3, keycode4, keycode5;
154
155 unsigned int max_brightness;
156 unsigned int brightness_changed;
157 unsigned int brightness_level;
158};
159
160static struct fujitsu_t *fujitsu;
161static int use_alt_lcd_levels = -1;
162static int disable_brightness_adjust = -1;
163
164/* Device used to access other hotkeys on the laptop */
165struct fujitsu_hotkey_t {
166 acpi_handle acpi_handle;
167 struct acpi_device *dev;
168 struct input_dev *input;
169 char phys[32];
170 struct platform_device *pf_device;
171 struct kfifo fifo;
172 spinlock_t fifo_lock;
173 int rfkill_supported;
174 int rfkill_state;
175 int logolamp_registered;
176 int kblamps_registered;
177};
178
179static struct fujitsu_hotkey_t *fujitsu_hotkey;
180
181static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
182
183#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
184static enum led_brightness logolamp_get(struct led_classdev *cdev);
185static void logolamp_set(struct led_classdev *cdev,
186 enum led_brightness brightness);
187
188static struct led_classdev logolamp_led = {
189 .name = "fujitsu::logolamp",
190 .brightness_get = logolamp_get,
191 .brightness_set = logolamp_set
192};
193
194static enum led_brightness kblamps_get(struct led_classdev *cdev);
195static void kblamps_set(struct led_classdev *cdev,
196 enum led_brightness brightness);
197
198static struct led_classdev kblamps_led = {
199 .name = "fujitsu::kblamps",
200 .brightness_get = kblamps_get,
201 .brightness_set = kblamps_set
202};
203#endif
204
205#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
206static u32 dbg_level = 0x03;
207#endif
208
209static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
210
211/* Fujitsu ACPI interface function */
212
213static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
214{
215 acpi_status status = AE_OK;
216 union acpi_object params[4] = {
217 { .type = ACPI_TYPE_INTEGER },
218 { .type = ACPI_TYPE_INTEGER },
219 { .type = ACPI_TYPE_INTEGER },
220 { .type = ACPI_TYPE_INTEGER }
221 };
222 struct acpi_object_list arg_list = { 4, ¶ms[0] };
223 unsigned long long value;
224 acpi_handle handle = NULL;
225
226 status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
227 if (ACPI_FAILURE(status)) {
228 vdbg_printk(FUJLAPTOP_DBG_ERROR,
229 "FUNC interface is not present\n");
230 return -ENODEV;
231 }
232
233 params[0].integer.value = cmd;
234 params[1].integer.value = arg0;
235 params[2].integer.value = arg1;
236 params[3].integer.value = arg2;
237
238 status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
239 if (ACPI_FAILURE(status)) {
240 vdbg_printk(FUJLAPTOP_DBG_WARN,
241 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
242 cmd, arg0, arg1, arg2);
243 return -ENODEV;
244 }
245
246 vdbg_printk(FUJLAPTOP_DBG_TRACE,
247 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
248 cmd, arg0, arg1, arg2, (int)value);
249 return value;
250}
251
252#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
253/* LED class callbacks */
254
255static void logolamp_set(struct led_classdev *cdev,
256 enum led_brightness brightness)
257{
258 if (brightness >= LED_FULL) {
259 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
260 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
261 } else if (brightness >= LED_HALF) {
262 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
263 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
264 } else {
265 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
266 }
267}
268
269static void kblamps_set(struct led_classdev *cdev,
270 enum led_brightness brightness)
271{
272 if (brightness >= LED_FULL)
273 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
274 else
275 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
276}
277
278static enum led_brightness logolamp_get(struct led_classdev *cdev)
279{
280 enum led_brightness brightness = LED_OFF;
281 int poweron, always;
282
283 poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
284 if (poweron == FUNC_LED_ON) {
285 brightness = LED_HALF;
286 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
287 if (always == FUNC_LED_ON)
288 brightness = LED_FULL;
289 }
290 return brightness;
291}
292
293static enum led_brightness kblamps_get(struct led_classdev *cdev)
294{
295 enum led_brightness brightness = LED_OFF;
296
297 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
298 brightness = LED_FULL;
299
300 return brightness;
301}
302#endif
303
304/* Hardware access for LCD brightness control */
305
306static int set_lcd_level(int level)
307{
308 acpi_status status = AE_OK;
309 acpi_handle handle = NULL;
310
311 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
312 level);
313
314 if (level < 0 || level >= fujitsu->max_brightness)
315 return -EINVAL;
316
317 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
318 if (ACPI_FAILURE(status)) {
319 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
320 return -ENODEV;
321 }
322
323
324 status = acpi_execute_simple_method(handle, NULL, level);
325 if (ACPI_FAILURE(status))
326 return -ENODEV;
327
328 return 0;
329}
330
331static int set_lcd_level_alt(int level)
332{
333 acpi_status status = AE_OK;
334 acpi_handle handle = NULL;
335
336 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
337 level);
338
339 if (level < 0 || level >= fujitsu->max_brightness)
340 return -EINVAL;
341
342 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
343 if (ACPI_FAILURE(status)) {
344 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
345 return -ENODEV;
346 }
347
348 status = acpi_execute_simple_method(handle, NULL, level);
349 if (ACPI_FAILURE(status))
350 return -ENODEV;
351
352 return 0;
353}
354
355static int get_lcd_level(void)
356{
357 unsigned long long state = 0;
358 acpi_status status = AE_OK;
359
360 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
361
362 status =
363 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
364 if (ACPI_FAILURE(status))
365 return 0;
366
367 fujitsu->brightness_level = state & 0x0fffffff;
368
369 if (state & 0x80000000)
370 fujitsu->brightness_changed = 1;
371 else
372 fujitsu->brightness_changed = 0;
373
374 return fujitsu->brightness_level;
375}
376
377static int get_max_brightness(void)
378{
379 unsigned long long state = 0;
380 acpi_status status = AE_OK;
381
382 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
383
384 status =
385 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
386 if (ACPI_FAILURE(status))
387 return -1;
388
389 fujitsu->max_brightness = state;
390
391 return fujitsu->max_brightness;
392}
393
394/* Backlight device stuff */
395
396static int bl_get_brightness(struct backlight_device *b)
397{
398 return get_lcd_level();
399}
400
401static int bl_update_status(struct backlight_device *b)
402{
403 int ret;
404 if (b->props.power == FB_BLANK_POWERDOWN)
405 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
406 else
407 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
408 if (ret != 0)
409 vdbg_printk(FUJLAPTOP_DBG_ERROR,
410 "Unable to adjust backlight power, error code %i\n",
411 ret);
412
413 if (use_alt_lcd_levels)
414 ret = set_lcd_level_alt(b->props.brightness);
415 else
416 ret = set_lcd_level(b->props.brightness);
417 if (ret != 0)
418 vdbg_printk(FUJLAPTOP_DBG_ERROR,
419 "Unable to adjust LCD brightness, error code %i\n",
420 ret);
421 return ret;
422}
423
424static const struct backlight_ops fujitsubl_ops = {
425 .get_brightness = bl_get_brightness,
426 .update_status = bl_update_status,
427};
428
429/* Platform LCD brightness device */
430
431static ssize_t
432show_max_brightness(struct device *dev,
433 struct device_attribute *attr, char *buf)
434{
435
436 int ret;
437
438 ret = get_max_brightness();
439 if (ret < 0)
440 return ret;
441
442 return sprintf(buf, "%i\n", ret);
443}
444
445static ssize_t
446show_brightness_changed(struct device *dev,
447 struct device_attribute *attr, char *buf)
448{
449
450 int ret;
451
452 ret = fujitsu->brightness_changed;
453 if (ret < 0)
454 return ret;
455
456 return sprintf(buf, "%i\n", ret);
457}
458
459static ssize_t show_lcd_level(struct device *dev,
460 struct device_attribute *attr, char *buf)
461{
462
463 int ret;
464
465 ret = get_lcd_level();
466 if (ret < 0)
467 return ret;
468
469 return sprintf(buf, "%i\n", ret);
470}
471
472static ssize_t store_lcd_level(struct device *dev,
473 struct device_attribute *attr, const char *buf,
474 size_t count)
475{
476
477 int level, ret;
478
479 if (sscanf(buf, "%i", &level) != 1
480 || (level < 0 || level >= fujitsu->max_brightness))
481 return -EINVAL;
482
483 if (use_alt_lcd_levels)
484 ret = set_lcd_level_alt(level);
485 else
486 ret = set_lcd_level(level);
487 if (ret < 0)
488 return ret;
489
490 ret = get_lcd_level();
491 if (ret < 0)
492 return ret;
493
494 return count;
495}
496
497static ssize_t
498ignore_store(struct device *dev,
499 struct device_attribute *attr, const char *buf, size_t count)
500{
501 return count;
502}
503
504static ssize_t
505show_lid_state(struct device *dev,
506 struct device_attribute *attr, char *buf)
507{
508 if (!(fujitsu_hotkey->rfkill_supported & 0x100))
509 return sprintf(buf, "unknown\n");
510 if (fujitsu_hotkey->rfkill_state & 0x100)
511 return sprintf(buf, "open\n");
512 else
513 return sprintf(buf, "closed\n");
514}
515
516static ssize_t
517show_dock_state(struct device *dev,
518 struct device_attribute *attr, char *buf)
519{
520 if (!(fujitsu_hotkey->rfkill_supported & 0x200))
521 return sprintf(buf, "unknown\n");
522 if (fujitsu_hotkey->rfkill_state & 0x200)
523 return sprintf(buf, "docked\n");
524 else
525 return sprintf(buf, "undocked\n");
526}
527
528static ssize_t
529show_radios_state(struct device *dev,
530 struct device_attribute *attr, char *buf)
531{
532 if (!(fujitsu_hotkey->rfkill_supported & 0x20))
533 return sprintf(buf, "unknown\n");
534 if (fujitsu_hotkey->rfkill_state & 0x20)
535 return sprintf(buf, "on\n");
536 else
537 return sprintf(buf, "killed\n");
538}
539
540static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
541static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
542 ignore_store);
543static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
544static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
545static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
546static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
547
548static struct attribute *fujitsupf_attributes[] = {
549 &dev_attr_brightness_changed.attr,
550 &dev_attr_max_brightness.attr,
551 &dev_attr_lcd_level.attr,
552 &dev_attr_lid.attr,
553 &dev_attr_dock.attr,
554 &dev_attr_radios.attr,
555 NULL
556};
557
558static struct attribute_group fujitsupf_attribute_group = {
559 .attrs = fujitsupf_attributes
560};
561
562static struct platform_driver fujitsupf_driver = {
563 .driver = {
564 .name = "fujitsu-laptop",
565 }
566};
567
568static void __init dmi_check_cb_common(const struct dmi_system_id *id)
569{
570 pr_info("Identified laptop model '%s'\n", id->ident);
571 if (use_alt_lcd_levels == -1) {
572 if (acpi_has_method(NULL,
573 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
574 use_alt_lcd_levels = 1;
575 else
576 use_alt_lcd_levels = 0;
577 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
578 "%i\n", use_alt_lcd_levels);
579 }
580}
581
582static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
583{
584 dmi_check_cb_common(id);
585 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
586 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
587 return 1;
588}
589
590static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
591{
592 dmi_check_cb_common(id);
593 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
594 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
595 return 1;
596}
597
598static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
599{
600 dmi_check_cb_common(id);
601 fujitsu->keycode1 = KEY_HELP; /* "Support" */
602 fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
603 fujitsu->keycode4 = KEY_WWW; /* "Internet" */
604 return 1;
605}
606
607static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
608 {
609 .ident = "Fujitsu Siemens S6410",
610 .matches = {
611 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
612 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
613 },
614 .callback = dmi_check_cb_s6410},
615 {
616 .ident = "Fujitsu Siemens S6420",
617 .matches = {
618 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
619 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
620 },
621 .callback = dmi_check_cb_s6420},
622 {
623 .ident = "Fujitsu LifeBook P8010",
624 .matches = {
625 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
626 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
627 },
628 .callback = dmi_check_cb_p8010},
629 {}
630};
631
632/* ACPI device for LCD brightness control */
633
634static int acpi_fujitsu_add(struct acpi_device *device)
635{
636 int state = 0;
637 struct input_dev *input;
638 int error;
639
640 if (!device)
641 return -EINVAL;
642
643 fujitsu->acpi_handle = device->handle;
644 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
645 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
646 device->driver_data = fujitsu;
647
648 fujitsu->input = input = input_allocate_device();
649 if (!input) {
650 error = -ENOMEM;
651 goto err_stop;
652 }
653
654 snprintf(fujitsu->phys, sizeof(fujitsu->phys),
655 "%s/video/input0", acpi_device_hid(device));
656
657 input->name = acpi_device_name(device);
658 input->phys = fujitsu->phys;
659 input->id.bustype = BUS_HOST;
660 input->id.product = 0x06;
661 input->dev.parent = &device->dev;
662 input->evbit[0] = BIT(EV_KEY);
663 set_bit(KEY_BRIGHTNESSUP, input->keybit);
664 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
665 set_bit(KEY_UNKNOWN, input->keybit);
666
667 error = input_register_device(input);
668 if (error)
669 goto err_free_input_dev;
670
671 error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
672 if (error) {
673 pr_err("Error reading power state\n");
674 goto err_unregister_input_dev;
675 }
676
677 pr_info("ACPI: %s [%s] (%s)\n",
678 acpi_device_name(device), acpi_device_bid(device),
679 !device->power.state ? "on" : "off");
680
681 fujitsu->dev = device;
682
683 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
684 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
685 if (ACPI_FAILURE
686 (acpi_evaluate_object
687 (device->handle, METHOD_NAME__INI, NULL, NULL)))
688 pr_err("_INI Method failed\n");
689 }
690
691 /* do config (detect defaults) */
692 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
693 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
694 vdbg_printk(FUJLAPTOP_DBG_INFO,
695 "config: [alt interface: %d], [adjust disable: %d]\n",
696 use_alt_lcd_levels, disable_brightness_adjust);
697
698 if (get_max_brightness() <= 0)
699 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
700 get_lcd_level();
701
702 return 0;
703
704err_unregister_input_dev:
705 input_unregister_device(input);
706 input = NULL;
707err_free_input_dev:
708 input_free_device(input);
709err_stop:
710 return error;
711}
712
713static int acpi_fujitsu_remove(struct acpi_device *device)
714{
715 struct fujitsu_t *fujitsu = acpi_driver_data(device);
716 struct input_dev *input = fujitsu->input;
717
718 input_unregister_device(input);
719
720 fujitsu->acpi_handle = NULL;
721
722 return 0;
723}
724
725/* Brightness notify */
726
727static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
728{
729 struct input_dev *input;
730 int keycode;
731 int oldb, newb;
732
733 input = fujitsu->input;
734
735 switch (event) {
736 case ACPI_FUJITSU_NOTIFY_CODE1:
737 keycode = 0;
738 oldb = fujitsu->brightness_level;
739 get_lcd_level();
740 newb = fujitsu->brightness_level;
741
742 vdbg_printk(FUJLAPTOP_DBG_TRACE,
743 "brightness button event [%i -> %i (%i)]\n",
744 oldb, newb, fujitsu->brightness_changed);
745
746 if (oldb < newb) {
747 if (disable_brightness_adjust != 1) {
748 if (use_alt_lcd_levels)
749 set_lcd_level_alt(newb);
750 else
751 set_lcd_level(newb);
752 }
753 keycode = KEY_BRIGHTNESSUP;
754 } else if (oldb > newb) {
755 if (disable_brightness_adjust != 1) {
756 if (use_alt_lcd_levels)
757 set_lcd_level_alt(newb);
758 else
759 set_lcd_level(newb);
760 }
761 keycode = KEY_BRIGHTNESSDOWN;
762 }
763 break;
764 default:
765 keycode = KEY_UNKNOWN;
766 vdbg_printk(FUJLAPTOP_DBG_WARN,
767 "unsupported event [0x%x]\n", event);
768 break;
769 }
770
771 if (keycode != 0) {
772 input_report_key(input, keycode, 1);
773 input_sync(input);
774 input_report_key(input, keycode, 0);
775 input_sync(input);
776 }
777}
778
779/* ACPI device for hotkey handling */
780
781static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
782{
783 int result = 0;
784 int state = 0;
785 struct input_dev *input;
786 int error;
787 int i;
788
789 if (!device)
790 return -EINVAL;
791
792 fujitsu_hotkey->acpi_handle = device->handle;
793 sprintf(acpi_device_name(device), "%s",
794 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
795 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
796 device->driver_data = fujitsu_hotkey;
797
798 /* kfifo */
799 spin_lock_init(&fujitsu_hotkey->fifo_lock);
800 error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
801 GFP_KERNEL);
802 if (error) {
803 pr_err("kfifo_alloc failed\n");
804 goto err_stop;
805 }
806
807 fujitsu_hotkey->input = input = input_allocate_device();
808 if (!input) {
809 error = -ENOMEM;
810 goto err_free_fifo;
811 }
812
813 snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
814 "%s/video/input0", acpi_device_hid(device));
815
816 input->name = acpi_device_name(device);
817 input->phys = fujitsu_hotkey->phys;
818 input->id.bustype = BUS_HOST;
819 input->id.product = 0x06;
820 input->dev.parent = &device->dev;
821
822 set_bit(EV_KEY, input->evbit);
823 set_bit(fujitsu->keycode1, input->keybit);
824 set_bit(fujitsu->keycode2, input->keybit);
825 set_bit(fujitsu->keycode3, input->keybit);
826 set_bit(fujitsu->keycode4, input->keybit);
827 set_bit(fujitsu->keycode5, input->keybit);
828 set_bit(KEY_UNKNOWN, input->keybit);
829
830 error = input_register_device(input);
831 if (error)
832 goto err_free_input_dev;
833
834 error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
835 if (error) {
836 pr_err("Error reading power state\n");
837 goto err_unregister_input_dev;
838 }
839
840 pr_info("ACPI: %s [%s] (%s)\n",
841 acpi_device_name(device), acpi_device_bid(device),
842 !device->power.state ? "on" : "off");
843
844 fujitsu_hotkey->dev = device;
845
846 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
847 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
848 if (ACPI_FAILURE
849 (acpi_evaluate_object
850 (device->handle, METHOD_NAME__INI, NULL, NULL)))
851 pr_err("_INI Method failed\n");
852 }
853
854 i = 0;
855 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
856 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
857 ; /* No action, result is discarded */
858 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
859
860 fujitsu_hotkey->rfkill_supported =
861 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
862
863 /* Make sure our bitmask of supported functions is cleared if the
864 RFKILL function block is not implemented, like on the S7020. */
865 if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
866 fujitsu_hotkey->rfkill_supported = 0;
867
868 if (fujitsu_hotkey->rfkill_supported)
869 fujitsu_hotkey->rfkill_state =
870 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
871
872 /* Suspect this is a keymap of the application panel, print it */
873 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
874
875#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
876 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
877 result = led_classdev_register(&fujitsu->pf_device->dev,
878 &logolamp_led);
879 if (result == 0) {
880 fujitsu_hotkey->logolamp_registered = 1;
881 } else {
882 pr_err("Could not register LED handler for logo lamp, error %i\n",
883 result);
884 }
885 }
886
887 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
888 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
889 result = led_classdev_register(&fujitsu->pf_device->dev,
890 &kblamps_led);
891 if (result == 0) {
892 fujitsu_hotkey->kblamps_registered = 1;
893 } else {
894 pr_err("Could not register LED handler for keyboard lamps, error %i\n",
895 result);
896 }
897 }
898#endif
899
900 return result;
901
902err_unregister_input_dev:
903 input_unregister_device(input);
904 input = NULL;
905err_free_input_dev:
906 input_free_device(input);
907err_free_fifo:
908 kfifo_free(&fujitsu_hotkey->fifo);
909err_stop:
910 return error;
911}
912
913static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
914{
915 struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
916 struct input_dev *input = fujitsu_hotkey->input;
917
918#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
919 if (fujitsu_hotkey->logolamp_registered)
920 led_classdev_unregister(&logolamp_led);
921
922 if (fujitsu_hotkey->kblamps_registered)
923 led_classdev_unregister(&kblamps_led);
924#endif
925
926 input_unregister_device(input);
927
928 kfifo_free(&fujitsu_hotkey->fifo);
929
930 fujitsu_hotkey->acpi_handle = NULL;
931
932 return 0;
933}
934
935static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
936{
937 struct input_dev *input;
938 int keycode, keycode_r;
939 unsigned int irb = 1;
940 int i, status;
941
942 input = fujitsu_hotkey->input;
943
944 if (fujitsu_hotkey->rfkill_supported)
945 fujitsu_hotkey->rfkill_state =
946 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
947
948 switch (event) {
949 case ACPI_FUJITSU_NOTIFY_CODE1:
950 i = 0;
951 while ((irb =
952 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
953 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
954 switch (irb & 0x4ff) {
955 case KEY1_CODE:
956 keycode = fujitsu->keycode1;
957 break;
958 case KEY2_CODE:
959 keycode = fujitsu->keycode2;
960 break;
961 case KEY3_CODE:
962 keycode = fujitsu->keycode3;
963 break;
964 case KEY4_CODE:
965 keycode = fujitsu->keycode4;
966 break;
967 case KEY5_CODE:
968 keycode = fujitsu->keycode5;
969 break;
970 case 0:
971 keycode = 0;
972 break;
973 default:
974 vdbg_printk(FUJLAPTOP_DBG_WARN,
975 "Unknown GIRB result [%x]\n", irb);
976 keycode = -1;
977 break;
978 }
979 if (keycode > 0) {
980 vdbg_printk(FUJLAPTOP_DBG_TRACE,
981 "Push keycode into ringbuffer [%d]\n",
982 keycode);
983 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
984 (unsigned char *)&keycode,
985 sizeof(keycode),
986 &fujitsu_hotkey->fifo_lock);
987 if (status != sizeof(keycode)) {
988 vdbg_printk(FUJLAPTOP_DBG_WARN,
989 "Could not push keycode [0x%x]\n",
990 keycode);
991 } else {
992 input_report_key(input, keycode, 1);
993 input_sync(input);
994 }
995 } else if (keycode == 0) {
996 while ((status =
997 kfifo_out_locked(
998 &fujitsu_hotkey->fifo,
999 (unsigned char *) &keycode_r,
1000 sizeof(keycode_r),
1001 &fujitsu_hotkey->fifo_lock))
1002 == sizeof(keycode_r)) {
1003 input_report_key(input, keycode_r, 0);
1004 input_sync(input);
1005 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1006 "Pop keycode from ringbuffer [%d]\n",
1007 keycode_r);
1008 }
1009 }
1010 }
1011
1012 break;
1013 default:
1014 keycode = KEY_UNKNOWN;
1015 vdbg_printk(FUJLAPTOP_DBG_WARN,
1016 "Unsupported event [0x%x]\n", event);
1017 input_report_key(input, keycode, 1);
1018 input_sync(input);
1019 input_report_key(input, keycode, 0);
1020 input_sync(input);
1021 break;
1022 }
1023}
1024
1025/* Initialization */
1026
1027static const struct acpi_device_id fujitsu_device_ids[] = {
1028 {ACPI_FUJITSU_HID, 0},
1029 {"", 0},
1030};
1031
1032static struct acpi_driver acpi_fujitsu_driver = {
1033 .name = ACPI_FUJITSU_DRIVER_NAME,
1034 .class = ACPI_FUJITSU_CLASS,
1035 .ids = fujitsu_device_ids,
1036 .ops = {
1037 .add = acpi_fujitsu_add,
1038 .remove = acpi_fujitsu_remove,
1039 .notify = acpi_fujitsu_notify,
1040 },
1041};
1042
1043static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1044 {ACPI_FUJITSU_HOTKEY_HID, 0},
1045 {"", 0},
1046};
1047
1048static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1049 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1050 .class = ACPI_FUJITSU_CLASS,
1051 .ids = fujitsu_hotkey_device_ids,
1052 .ops = {
1053 .add = acpi_fujitsu_hotkey_add,
1054 .remove = acpi_fujitsu_hotkey_remove,
1055 .notify = acpi_fujitsu_hotkey_notify,
1056 },
1057};
1058
1059static const struct acpi_device_id fujitsu_ids[] __used = {
1060 {ACPI_FUJITSU_HID, 0},
1061 {ACPI_FUJITSU_HOTKEY_HID, 0},
1062 {"", 0}
1063};
1064MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1065
1066static int __init fujitsu_init(void)
1067{
1068 int ret, result, max_brightness;
1069
1070 if (acpi_disabled)
1071 return -ENODEV;
1072
1073 fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1074 if (!fujitsu)
1075 return -ENOMEM;
1076 fujitsu->keycode1 = KEY_PROG1;
1077 fujitsu->keycode2 = KEY_PROG2;
1078 fujitsu->keycode3 = KEY_PROG3;
1079 fujitsu->keycode4 = KEY_PROG4;
1080 fujitsu->keycode5 = KEY_RFKILL;
1081 dmi_check_system(fujitsu_dmi_table);
1082
1083 result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1084 if (result < 0) {
1085 ret = -ENODEV;
1086 goto fail_acpi;
1087 }
1088
1089 /* Register platform stuff */
1090
1091 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1092 if (!fujitsu->pf_device) {
1093 ret = -ENOMEM;
1094 goto fail_platform_driver;
1095 }
1096
1097 ret = platform_device_add(fujitsu->pf_device);
1098 if (ret)
1099 goto fail_platform_device1;
1100
1101 ret =
1102 sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1103 &fujitsupf_attribute_group);
1104 if (ret)
1105 goto fail_platform_device2;
1106
1107 /* Register backlight stuff */
1108
1109 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1110 struct backlight_properties props;
1111
1112 memset(&props, 0, sizeof(struct backlight_properties));
1113 max_brightness = fujitsu->max_brightness;
1114 props.type = BACKLIGHT_PLATFORM;
1115 props.max_brightness = max_brightness - 1;
1116 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1117 NULL, NULL,
1118 &fujitsubl_ops,
1119 &props);
1120 if (IS_ERR(fujitsu->bl_device)) {
1121 ret = PTR_ERR(fujitsu->bl_device);
1122 fujitsu->bl_device = NULL;
1123 goto fail_sysfs_group;
1124 }
1125 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1126 }
1127
1128 ret = platform_driver_register(&fujitsupf_driver);
1129 if (ret)
1130 goto fail_backlight;
1131
1132 /* Register hotkey driver */
1133
1134 fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1135 if (!fujitsu_hotkey) {
1136 ret = -ENOMEM;
1137 goto fail_hotkey;
1138 }
1139
1140 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1141 if (result < 0) {
1142 ret = -ENODEV;
1143 goto fail_hotkey1;
1144 }
1145
1146 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1147 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1148 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1149 fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN;
1150 else
1151 fujitsu->bl_device->props.power = FB_BLANK_UNBLANK;
1152 }
1153
1154 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1155
1156 return 0;
1157
1158fail_hotkey1:
1159 kfree(fujitsu_hotkey);
1160fail_hotkey:
1161 platform_driver_unregister(&fujitsupf_driver);
1162fail_backlight:
1163 backlight_device_unregister(fujitsu->bl_device);
1164fail_sysfs_group:
1165 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1166 &fujitsupf_attribute_group);
1167fail_platform_device2:
1168 platform_device_del(fujitsu->pf_device);
1169fail_platform_device1:
1170 platform_device_put(fujitsu->pf_device);
1171fail_platform_driver:
1172 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1173fail_acpi:
1174 kfree(fujitsu);
1175
1176 return ret;
1177}
1178
1179static void __exit fujitsu_cleanup(void)
1180{
1181 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1182
1183 kfree(fujitsu_hotkey);
1184
1185 platform_driver_unregister(&fujitsupf_driver);
1186
1187 backlight_device_unregister(fujitsu->bl_device);
1188
1189 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1190 &fujitsupf_attribute_group);
1191
1192 platform_device_unregister(fujitsu->pf_device);
1193
1194 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1195
1196 kfree(fujitsu);
1197
1198 pr_info("driver unloaded\n");
1199}
1200
1201module_init(fujitsu_init);
1202module_exit(fujitsu_cleanup);
1203
1204module_param(use_alt_lcd_levels, uint, 0644);
1205MODULE_PARM_DESC(use_alt_lcd_levels,
1206 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1207module_param(disable_brightness_adjust, uint, 0644);
1208MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1209#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1210module_param_named(debug, dbg_level, uint, 0644);
1211MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1212#endif
1213
1214MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1215MODULE_DESCRIPTION("Fujitsu laptop extras support");
1216MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1217MODULE_LICENSE("GPL");
1218
1219MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1220MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1221MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
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");