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1/*-*-linux-c-*-*/
2
3/*
4 Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
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/input.h>
68#include <linux/kfifo.h>
69#include <linux/video_output.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
76#define FUJITSU_DRIVER_VERSION "0.6.0"
77
78#define FUJITSU_LCD_N_LEVELS 8
79
80#define ACPI_FUJITSU_CLASS "fujitsu"
81#define ACPI_FUJITSU_HID "FUJ02B1"
82#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
83#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
84#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
85#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
86#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
87
88#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
89
90#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
91#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
92
93/* FUNC interface - command values */
94#define FUNC_RFKILL 0x1000
95#define FUNC_LEDS 0x1001
96#define FUNC_BUTTONS 0x1002
97#define FUNC_BACKLIGHT 0x1004
98
99/* FUNC interface - responses */
100#define UNSUPPORTED_CMD 0x80000000
101
102#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
103/* FUNC interface - LED control */
104#define FUNC_LED_OFF 0x1
105#define FUNC_LED_ON 0x30001
106#define KEYBOARD_LAMPS 0x100
107#define LOGOLAMP_POWERON 0x2000
108#define LOGOLAMP_ALWAYS 0x4000
109#endif
110
111/* Hotkey details */
112#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
113#define KEY2_CODE 0x411
114#define KEY3_CODE 0x412
115#define KEY4_CODE 0x413
116
117#define MAX_HOTKEY_RINGBUFFER_SIZE 100
118#define RINGBUFFERSIZE 40
119
120/* Debugging */
121#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
122#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
123#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
124#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
125#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
126
127#define FUJLAPTOP_DBG_ALL 0xffff
128#define FUJLAPTOP_DBG_ERROR 0x0001
129#define FUJLAPTOP_DBG_WARN 0x0002
130#define FUJLAPTOP_DBG_INFO 0x0004
131#define FUJLAPTOP_DBG_TRACE 0x0008
132
133#define dbg_printk(a_dbg_level, format, arg...) \
134 do { if (dbg_level & a_dbg_level) \
135 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
136 } while (0)
137#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
138#define vdbg_printk(a_dbg_level, format, arg...) \
139 dbg_printk(a_dbg_level, format, ## arg)
140#else
141#define vdbg_printk(a_dbg_level, format, arg...)
142#endif
143
144/* Device controlling the backlight and associated keys */
145struct fujitsu_t {
146 acpi_handle acpi_handle;
147 struct acpi_device *dev;
148 struct input_dev *input;
149 char phys[32];
150 struct backlight_device *bl_device;
151 struct platform_device *pf_device;
152 int keycode1, keycode2, keycode3, keycode4;
153
154 unsigned int max_brightness;
155 unsigned int brightness_changed;
156 unsigned int brightness_level;
157};
158
159static struct fujitsu_t *fujitsu;
160static int use_alt_lcd_levels = -1;
161static int disable_brightness_adjust = -1;
162
163/* Device used to access other hotkeys on the laptop */
164struct fujitsu_hotkey_t {
165 acpi_handle acpi_handle;
166 struct acpi_device *dev;
167 struct input_dev *input;
168 char phys[32];
169 struct platform_device *pf_device;
170 struct kfifo fifo;
171 spinlock_t fifo_lock;
172 int rfkill_supported;
173 int rfkill_state;
174 int logolamp_registered;
175 int kblamps_registered;
176};
177
178static struct fujitsu_hotkey_t *fujitsu_hotkey;
179
180static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
181
182#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
183static enum led_brightness logolamp_get(struct led_classdev *cdev);
184static void logolamp_set(struct led_classdev *cdev,
185 enum led_brightness brightness);
186
187static struct led_classdev logolamp_led = {
188 .name = "fujitsu::logolamp",
189 .brightness_get = logolamp_get,
190 .brightness_set = logolamp_set
191};
192
193static enum led_brightness kblamps_get(struct led_classdev *cdev);
194static void kblamps_set(struct led_classdev *cdev,
195 enum led_brightness brightness);
196
197static struct led_classdev kblamps_led = {
198 .name = "fujitsu::kblamps",
199 .brightness_get = kblamps_get,
200 .brightness_set = kblamps_set
201};
202#endif
203
204#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
205static u32 dbg_level = 0x03;
206#endif
207
208static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
209
210/* Fujitsu ACPI interface function */
211
212static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
213{
214 acpi_status status = AE_OK;
215 union acpi_object params[4] = {
216 { .type = ACPI_TYPE_INTEGER },
217 { .type = ACPI_TYPE_INTEGER },
218 { .type = ACPI_TYPE_INTEGER },
219 { .type = ACPI_TYPE_INTEGER }
220 };
221 struct acpi_object_list arg_list = { 4, ¶ms[0] };
222 struct acpi_buffer output;
223 union acpi_object out_obj;
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 output.length = sizeof(out_obj);
239 output.pointer = &out_obj;
240
241 status = acpi_evaluate_object(handle, NULL, &arg_list, &output);
242 if (ACPI_FAILURE(status)) {
243 vdbg_printk(FUJLAPTOP_DBG_WARN,
244 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
245 cmd, arg0, arg1, arg2);
246 return -ENODEV;
247 }
248
249 if (out_obj.type != ACPI_TYPE_INTEGER) {
250 vdbg_printk(FUJLAPTOP_DBG_WARN,
251 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) did not "
252 "return an integer\n",
253 cmd, arg0, arg1, arg2);
254 return -ENODEV;
255 }
256
257 vdbg_printk(FUJLAPTOP_DBG_TRACE,
258 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
259 cmd, arg0, arg1, arg2, (int)out_obj.integer.value);
260 return out_obj.integer.value;
261}
262
263#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
264/* LED class callbacks */
265
266static void logolamp_set(struct led_classdev *cdev,
267 enum led_brightness brightness)
268{
269 if (brightness >= LED_FULL) {
270 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
271 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
272 } else if (brightness >= LED_HALF) {
273 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
274 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
275 } else {
276 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
277 }
278}
279
280static void kblamps_set(struct led_classdev *cdev,
281 enum led_brightness brightness)
282{
283 if (brightness >= LED_FULL)
284 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
285 else
286 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
287}
288
289static enum led_brightness logolamp_get(struct led_classdev *cdev)
290{
291 enum led_brightness brightness = LED_OFF;
292 int poweron, always;
293
294 poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
295 if (poweron == FUNC_LED_ON) {
296 brightness = LED_HALF;
297 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
298 if (always == FUNC_LED_ON)
299 brightness = LED_FULL;
300 }
301 return brightness;
302}
303
304static enum led_brightness kblamps_get(struct led_classdev *cdev)
305{
306 enum led_brightness brightness = LED_OFF;
307
308 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
309 brightness = LED_FULL;
310
311 return brightness;
312}
313#endif
314
315/* Hardware access for LCD brightness control */
316
317static int set_lcd_level(int level)
318{
319 acpi_status status = AE_OK;
320 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
321 struct acpi_object_list arg_list = { 1, &arg0 };
322 acpi_handle handle = NULL;
323
324 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
325 level);
326
327 if (level < 0 || level >= fujitsu->max_brightness)
328 return -EINVAL;
329
330 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
331 if (ACPI_FAILURE(status)) {
332 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
333 return -ENODEV;
334 }
335
336 arg0.integer.value = level;
337
338 status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
339 if (ACPI_FAILURE(status))
340 return -ENODEV;
341
342 return 0;
343}
344
345static int set_lcd_level_alt(int level)
346{
347 acpi_status status = AE_OK;
348 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
349 struct acpi_object_list arg_list = { 1, &arg0 };
350 acpi_handle handle = NULL;
351
352 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
353 level);
354
355 if (level < 0 || level >= fujitsu->max_brightness)
356 return -EINVAL;
357
358 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
359 if (ACPI_FAILURE(status)) {
360 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
361 return -ENODEV;
362 }
363
364 arg0.integer.value = level;
365
366 status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
367 if (ACPI_FAILURE(status))
368 return -ENODEV;
369
370 return 0;
371}
372
373static int get_lcd_level(void)
374{
375 unsigned long long state = 0;
376 acpi_status status = AE_OK;
377
378 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
379
380 status =
381 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
382 if (ACPI_FAILURE(status))
383 return 0;
384
385 fujitsu->brightness_level = state & 0x0fffffff;
386
387 if (state & 0x80000000)
388 fujitsu->brightness_changed = 1;
389 else
390 fujitsu->brightness_changed = 0;
391
392 return fujitsu->brightness_level;
393}
394
395static int get_max_brightness(void)
396{
397 unsigned long long state = 0;
398 acpi_status status = AE_OK;
399
400 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
401
402 status =
403 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
404 if (ACPI_FAILURE(status))
405 return -1;
406
407 fujitsu->max_brightness = state;
408
409 return fujitsu->max_brightness;
410}
411
412/* Backlight device stuff */
413
414static int bl_get_brightness(struct backlight_device *b)
415{
416 return get_lcd_level();
417}
418
419static int bl_update_status(struct backlight_device *b)
420{
421 int ret;
422 if (b->props.power == 4)
423 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
424 else
425 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
426 if (ret != 0)
427 vdbg_printk(FUJLAPTOP_DBG_ERROR,
428 "Unable to adjust backlight power, error code %i\n",
429 ret);
430
431 if (use_alt_lcd_levels)
432 ret = set_lcd_level_alt(b->props.brightness);
433 else
434 ret = set_lcd_level(b->props.brightness);
435 if (ret != 0)
436 vdbg_printk(FUJLAPTOP_DBG_ERROR,
437 "Unable to adjust LCD brightness, error code %i\n",
438 ret);
439 return ret;
440}
441
442static const struct backlight_ops fujitsubl_ops = {
443 .get_brightness = bl_get_brightness,
444 .update_status = bl_update_status,
445};
446
447/* Platform LCD brightness device */
448
449static ssize_t
450show_max_brightness(struct device *dev,
451 struct device_attribute *attr, char *buf)
452{
453
454 int ret;
455
456 ret = get_max_brightness();
457 if (ret < 0)
458 return ret;
459
460 return sprintf(buf, "%i\n", ret);
461}
462
463static ssize_t
464show_brightness_changed(struct device *dev,
465 struct device_attribute *attr, char *buf)
466{
467
468 int ret;
469
470 ret = fujitsu->brightness_changed;
471 if (ret < 0)
472 return ret;
473
474 return sprintf(buf, "%i\n", ret);
475}
476
477static ssize_t show_lcd_level(struct device *dev,
478 struct device_attribute *attr, char *buf)
479{
480
481 int ret;
482
483 ret = get_lcd_level();
484 if (ret < 0)
485 return ret;
486
487 return sprintf(buf, "%i\n", ret);
488}
489
490static ssize_t store_lcd_level(struct device *dev,
491 struct device_attribute *attr, const char *buf,
492 size_t count)
493{
494
495 int level, ret;
496
497 if (sscanf(buf, "%i", &level) != 1
498 || (level < 0 || level >= fujitsu->max_brightness))
499 return -EINVAL;
500
501 if (use_alt_lcd_levels)
502 ret = set_lcd_level_alt(level);
503 else
504 ret = set_lcd_level(level);
505 if (ret < 0)
506 return ret;
507
508 ret = get_lcd_level();
509 if (ret < 0)
510 return ret;
511
512 return count;
513}
514
515static ssize_t
516ignore_store(struct device *dev,
517 struct device_attribute *attr, const char *buf, size_t count)
518{
519 return count;
520}
521
522static ssize_t
523show_lid_state(struct device *dev,
524 struct device_attribute *attr, char *buf)
525{
526 if (!(fujitsu_hotkey->rfkill_supported & 0x100))
527 return sprintf(buf, "unknown\n");
528 if (fujitsu_hotkey->rfkill_state & 0x100)
529 return sprintf(buf, "open\n");
530 else
531 return sprintf(buf, "closed\n");
532}
533
534static ssize_t
535show_dock_state(struct device *dev,
536 struct device_attribute *attr, char *buf)
537{
538 if (!(fujitsu_hotkey->rfkill_supported & 0x200))
539 return sprintf(buf, "unknown\n");
540 if (fujitsu_hotkey->rfkill_state & 0x200)
541 return sprintf(buf, "docked\n");
542 else
543 return sprintf(buf, "undocked\n");
544}
545
546static ssize_t
547show_radios_state(struct device *dev,
548 struct device_attribute *attr, char *buf)
549{
550 if (!(fujitsu_hotkey->rfkill_supported & 0x20))
551 return sprintf(buf, "unknown\n");
552 if (fujitsu_hotkey->rfkill_state & 0x20)
553 return sprintf(buf, "on\n");
554 else
555 return sprintf(buf, "killed\n");
556}
557
558static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
559static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
560 ignore_store);
561static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
562static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
563static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
564static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
565
566static struct attribute *fujitsupf_attributes[] = {
567 &dev_attr_brightness_changed.attr,
568 &dev_attr_max_brightness.attr,
569 &dev_attr_lcd_level.attr,
570 &dev_attr_lid.attr,
571 &dev_attr_dock.attr,
572 &dev_attr_radios.attr,
573 NULL
574};
575
576static struct attribute_group fujitsupf_attribute_group = {
577 .attrs = fujitsupf_attributes
578};
579
580static struct platform_driver fujitsupf_driver = {
581 .driver = {
582 .name = "fujitsu-laptop",
583 .owner = THIS_MODULE,
584 }
585};
586
587static void dmi_check_cb_common(const struct dmi_system_id *id)
588{
589 acpi_handle handle;
590 pr_info("Identified laptop model '%s'\n", id->ident);
591 if (use_alt_lcd_levels == -1) {
592 if (ACPI_SUCCESS(acpi_get_handle(NULL,
593 "\\_SB.PCI0.LPCB.FJEX.SBL2", &handle)))
594 use_alt_lcd_levels = 1;
595 else
596 use_alt_lcd_levels = 0;
597 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
598 "%i\n", use_alt_lcd_levels);
599 }
600}
601
602static int dmi_check_cb_s6410(const struct dmi_system_id *id)
603{
604 dmi_check_cb_common(id);
605 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
606 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
607 return 1;
608}
609
610static int dmi_check_cb_s6420(const struct dmi_system_id *id)
611{
612 dmi_check_cb_common(id);
613 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
614 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
615 return 1;
616}
617
618static int dmi_check_cb_p8010(const struct dmi_system_id *id)
619{
620 dmi_check_cb_common(id);
621 fujitsu->keycode1 = KEY_HELP; /* "Support" */
622 fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
623 fujitsu->keycode4 = KEY_WWW; /* "Internet" */
624 return 1;
625}
626
627static struct dmi_system_id fujitsu_dmi_table[] = {
628 {
629 .ident = "Fujitsu Siemens S6410",
630 .matches = {
631 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
632 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
633 },
634 .callback = dmi_check_cb_s6410},
635 {
636 .ident = "Fujitsu Siemens S6420",
637 .matches = {
638 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
639 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
640 },
641 .callback = dmi_check_cb_s6420},
642 {
643 .ident = "Fujitsu LifeBook P8010",
644 .matches = {
645 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
646 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
647 },
648 .callback = dmi_check_cb_p8010},
649 {}
650};
651
652/* ACPI device for LCD brightness control */
653
654static int acpi_fujitsu_add(struct acpi_device *device)
655{
656 acpi_handle handle;
657 int result = 0;
658 int state = 0;
659 struct input_dev *input;
660 int error;
661
662 if (!device)
663 return -EINVAL;
664
665 fujitsu->acpi_handle = device->handle;
666 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
667 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
668 device->driver_data = fujitsu;
669
670 fujitsu->input = input = input_allocate_device();
671 if (!input) {
672 error = -ENOMEM;
673 goto err_stop;
674 }
675
676 snprintf(fujitsu->phys, sizeof(fujitsu->phys),
677 "%s/video/input0", acpi_device_hid(device));
678
679 input->name = acpi_device_name(device);
680 input->phys = fujitsu->phys;
681 input->id.bustype = BUS_HOST;
682 input->id.product = 0x06;
683 input->dev.parent = &device->dev;
684 input->evbit[0] = BIT(EV_KEY);
685 set_bit(KEY_BRIGHTNESSUP, input->keybit);
686 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
687 set_bit(KEY_UNKNOWN, input->keybit);
688
689 error = input_register_device(input);
690 if (error)
691 goto err_free_input_dev;
692
693 result = acpi_bus_update_power(fujitsu->acpi_handle, &state);
694 if (result) {
695 pr_err("Error reading power state\n");
696 goto err_unregister_input_dev;
697 }
698
699 pr_info("ACPI: %s [%s] (%s)\n",
700 acpi_device_name(device), acpi_device_bid(device),
701 !device->power.state ? "on" : "off");
702
703 fujitsu->dev = device;
704
705 if (ACPI_SUCCESS
706 (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
707 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
708 if (ACPI_FAILURE
709 (acpi_evaluate_object
710 (device->handle, METHOD_NAME__INI, NULL, NULL)))
711 pr_err("_INI Method failed\n");
712 }
713
714 /* do config (detect defaults) */
715 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
716 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
717 vdbg_printk(FUJLAPTOP_DBG_INFO,
718 "config: [alt interface: %d], [adjust disable: %d]\n",
719 use_alt_lcd_levels, disable_brightness_adjust);
720
721 if (get_max_brightness() <= 0)
722 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
723 get_lcd_level();
724
725 return result;
726
727err_unregister_input_dev:
728 input_unregister_device(input);
729 input = NULL;
730err_free_input_dev:
731 input_free_device(input);
732err_stop:
733 return result;
734}
735
736static int acpi_fujitsu_remove(struct acpi_device *device, int type)
737{
738 struct fujitsu_t *fujitsu = acpi_driver_data(device);
739 struct input_dev *input = fujitsu->input;
740
741 input_unregister_device(input);
742
743 fujitsu->acpi_handle = NULL;
744
745 return 0;
746}
747
748/* Brightness notify */
749
750static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
751{
752 struct input_dev *input;
753 int keycode;
754 int oldb, newb;
755
756 input = fujitsu->input;
757
758 switch (event) {
759 case ACPI_FUJITSU_NOTIFY_CODE1:
760 keycode = 0;
761 oldb = fujitsu->brightness_level;
762 get_lcd_level();
763 newb = fujitsu->brightness_level;
764
765 vdbg_printk(FUJLAPTOP_DBG_TRACE,
766 "brightness button event [%i -> %i (%i)]\n",
767 oldb, newb, fujitsu->brightness_changed);
768
769 if (oldb < newb) {
770 if (disable_brightness_adjust != 1) {
771 if (use_alt_lcd_levels)
772 set_lcd_level_alt(newb);
773 else
774 set_lcd_level(newb);
775 }
776 acpi_bus_generate_proc_event(fujitsu->dev,
777 ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
778 keycode = KEY_BRIGHTNESSUP;
779 } else if (oldb > newb) {
780 if (disable_brightness_adjust != 1) {
781 if (use_alt_lcd_levels)
782 set_lcd_level_alt(newb);
783 else
784 set_lcd_level(newb);
785 }
786 acpi_bus_generate_proc_event(fujitsu->dev,
787 ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
788 keycode = KEY_BRIGHTNESSDOWN;
789 }
790 break;
791 default:
792 keycode = KEY_UNKNOWN;
793 vdbg_printk(FUJLAPTOP_DBG_WARN,
794 "unsupported event [0x%x]\n", event);
795 break;
796 }
797
798 if (keycode != 0) {
799 input_report_key(input, keycode, 1);
800 input_sync(input);
801 input_report_key(input, keycode, 0);
802 input_sync(input);
803 }
804}
805
806/* ACPI device for hotkey handling */
807
808static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
809{
810 acpi_handle handle;
811 int result = 0;
812 int state = 0;
813 struct input_dev *input;
814 int error;
815 int i;
816
817 if (!device)
818 return -EINVAL;
819
820 fujitsu_hotkey->acpi_handle = device->handle;
821 sprintf(acpi_device_name(device), "%s",
822 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
823 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
824 device->driver_data = fujitsu_hotkey;
825
826 /* kfifo */
827 spin_lock_init(&fujitsu_hotkey->fifo_lock);
828 error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
829 GFP_KERNEL);
830 if (error) {
831 pr_err("kfifo_alloc failed\n");
832 goto err_stop;
833 }
834
835 fujitsu_hotkey->input = input = input_allocate_device();
836 if (!input) {
837 error = -ENOMEM;
838 goto err_free_fifo;
839 }
840
841 snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
842 "%s/video/input0", acpi_device_hid(device));
843
844 input->name = acpi_device_name(device);
845 input->phys = fujitsu_hotkey->phys;
846 input->id.bustype = BUS_HOST;
847 input->id.product = 0x06;
848 input->dev.parent = &device->dev;
849
850 set_bit(EV_KEY, input->evbit);
851 set_bit(fujitsu->keycode1, input->keybit);
852 set_bit(fujitsu->keycode2, input->keybit);
853 set_bit(fujitsu->keycode3, input->keybit);
854 set_bit(fujitsu->keycode4, input->keybit);
855 set_bit(KEY_UNKNOWN, input->keybit);
856
857 error = input_register_device(input);
858 if (error)
859 goto err_free_input_dev;
860
861 result = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
862 if (result) {
863 pr_err("Error reading power state\n");
864 goto err_unregister_input_dev;
865 }
866
867 pr_info("ACPI: %s [%s] (%s)\n",
868 acpi_device_name(device), acpi_device_bid(device),
869 !device->power.state ? "on" : "off");
870
871 fujitsu_hotkey->dev = device;
872
873 if (ACPI_SUCCESS
874 (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
875 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
876 if (ACPI_FAILURE
877 (acpi_evaluate_object
878 (device->handle, METHOD_NAME__INI, NULL, NULL)))
879 pr_err("_INI Method failed\n");
880 }
881
882 i = 0;
883 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
884 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
885 ; /* No action, result is discarded */
886 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
887
888 fujitsu_hotkey->rfkill_supported =
889 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
890
891 /* Make sure our bitmask of supported functions is cleared if the
892 RFKILL function block is not implemented, like on the S7020. */
893 if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
894 fujitsu_hotkey->rfkill_supported = 0;
895
896 if (fujitsu_hotkey->rfkill_supported)
897 fujitsu_hotkey->rfkill_state =
898 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
899
900 /* Suspect this is a keymap of the application panel, print it */
901 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
902
903#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
904 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
905 result = led_classdev_register(&fujitsu->pf_device->dev,
906 &logolamp_led);
907 if (result == 0) {
908 fujitsu_hotkey->logolamp_registered = 1;
909 } else {
910 pr_err("Could not register LED handler for logo lamp, error %i\n",
911 result);
912 }
913 }
914
915 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
916 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
917 result = led_classdev_register(&fujitsu->pf_device->dev,
918 &kblamps_led);
919 if (result == 0) {
920 fujitsu_hotkey->kblamps_registered = 1;
921 } else {
922 pr_err("Could not register LED handler for keyboard lamps, error %i\n",
923 result);
924 }
925 }
926#endif
927
928 return result;
929
930err_unregister_input_dev:
931 input_unregister_device(input);
932 input = NULL;
933err_free_input_dev:
934 input_free_device(input);
935err_free_fifo:
936 kfifo_free(&fujitsu_hotkey->fifo);
937err_stop:
938 return result;
939}
940
941static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
942{
943 struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
944 struct input_dev *input = fujitsu_hotkey->input;
945
946#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
947 if (fujitsu_hotkey->logolamp_registered)
948 led_classdev_unregister(&logolamp_led);
949
950 if (fujitsu_hotkey->kblamps_registered)
951 led_classdev_unregister(&kblamps_led);
952#endif
953
954 input_unregister_device(input);
955
956 kfifo_free(&fujitsu_hotkey->fifo);
957
958 fujitsu_hotkey->acpi_handle = NULL;
959
960 return 0;
961}
962
963static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
964{
965 struct input_dev *input;
966 int keycode, keycode_r;
967 unsigned int irb = 1;
968 int i, status;
969
970 input = fujitsu_hotkey->input;
971
972 if (fujitsu_hotkey->rfkill_supported)
973 fujitsu_hotkey->rfkill_state =
974 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
975
976 switch (event) {
977 case ACPI_FUJITSU_NOTIFY_CODE1:
978 i = 0;
979 while ((irb =
980 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
981 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
982 switch (irb & 0x4ff) {
983 case KEY1_CODE:
984 keycode = fujitsu->keycode1;
985 break;
986 case KEY2_CODE:
987 keycode = fujitsu->keycode2;
988 break;
989 case KEY3_CODE:
990 keycode = fujitsu->keycode3;
991 break;
992 case KEY4_CODE:
993 keycode = fujitsu->keycode4;
994 break;
995 case 0:
996 keycode = 0;
997 break;
998 default:
999 vdbg_printk(FUJLAPTOP_DBG_WARN,
1000 "Unknown GIRB result [%x]\n", irb);
1001 keycode = -1;
1002 break;
1003 }
1004 if (keycode > 0) {
1005 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1006 "Push keycode into ringbuffer [%d]\n",
1007 keycode);
1008 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
1009 (unsigned char *)&keycode,
1010 sizeof(keycode),
1011 &fujitsu_hotkey->fifo_lock);
1012 if (status != sizeof(keycode)) {
1013 vdbg_printk(FUJLAPTOP_DBG_WARN,
1014 "Could not push keycode [0x%x]\n",
1015 keycode);
1016 } else {
1017 input_report_key(input, keycode, 1);
1018 input_sync(input);
1019 }
1020 } else if (keycode == 0) {
1021 while ((status =
1022 kfifo_out_locked(
1023 &fujitsu_hotkey->fifo,
1024 (unsigned char *) &keycode_r,
1025 sizeof(keycode_r),
1026 &fujitsu_hotkey->fifo_lock))
1027 == sizeof(keycode_r)) {
1028 input_report_key(input, keycode_r, 0);
1029 input_sync(input);
1030 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1031 "Pop keycode from ringbuffer [%d]\n",
1032 keycode_r);
1033 }
1034 }
1035 }
1036
1037 break;
1038 default:
1039 keycode = KEY_UNKNOWN;
1040 vdbg_printk(FUJLAPTOP_DBG_WARN,
1041 "Unsupported event [0x%x]\n", event);
1042 input_report_key(input, keycode, 1);
1043 input_sync(input);
1044 input_report_key(input, keycode, 0);
1045 input_sync(input);
1046 break;
1047 }
1048}
1049
1050/* Initialization */
1051
1052static const struct acpi_device_id fujitsu_device_ids[] = {
1053 {ACPI_FUJITSU_HID, 0},
1054 {"", 0},
1055};
1056
1057static struct acpi_driver acpi_fujitsu_driver = {
1058 .name = ACPI_FUJITSU_DRIVER_NAME,
1059 .class = ACPI_FUJITSU_CLASS,
1060 .ids = fujitsu_device_ids,
1061 .ops = {
1062 .add = acpi_fujitsu_add,
1063 .remove = acpi_fujitsu_remove,
1064 .notify = acpi_fujitsu_notify,
1065 },
1066};
1067
1068static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1069 {ACPI_FUJITSU_HOTKEY_HID, 0},
1070 {"", 0},
1071};
1072
1073static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1074 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1075 .class = ACPI_FUJITSU_CLASS,
1076 .ids = fujitsu_hotkey_device_ids,
1077 .ops = {
1078 .add = acpi_fujitsu_hotkey_add,
1079 .remove = acpi_fujitsu_hotkey_remove,
1080 .notify = acpi_fujitsu_hotkey_notify,
1081 },
1082};
1083
1084static int __init fujitsu_init(void)
1085{
1086 int ret, result, max_brightness;
1087
1088 if (acpi_disabled)
1089 return -ENODEV;
1090
1091 fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1092 if (!fujitsu)
1093 return -ENOMEM;
1094 fujitsu->keycode1 = KEY_PROG1;
1095 fujitsu->keycode2 = KEY_PROG2;
1096 fujitsu->keycode3 = KEY_PROG3;
1097 fujitsu->keycode4 = KEY_PROG4;
1098 dmi_check_system(fujitsu_dmi_table);
1099
1100 result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1101 if (result < 0) {
1102 ret = -ENODEV;
1103 goto fail_acpi;
1104 }
1105
1106 /* Register platform stuff */
1107
1108 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1109 if (!fujitsu->pf_device) {
1110 ret = -ENOMEM;
1111 goto fail_platform_driver;
1112 }
1113
1114 ret = platform_device_add(fujitsu->pf_device);
1115 if (ret)
1116 goto fail_platform_device1;
1117
1118 ret =
1119 sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1120 &fujitsupf_attribute_group);
1121 if (ret)
1122 goto fail_platform_device2;
1123
1124 /* Register backlight stuff */
1125
1126 if (!acpi_video_backlight_support()) {
1127 struct backlight_properties props;
1128
1129 memset(&props, 0, sizeof(struct backlight_properties));
1130 max_brightness = fujitsu->max_brightness;
1131 props.type = BACKLIGHT_PLATFORM;
1132 props.max_brightness = max_brightness - 1;
1133 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1134 NULL, NULL,
1135 &fujitsubl_ops,
1136 &props);
1137 if (IS_ERR(fujitsu->bl_device)) {
1138 ret = PTR_ERR(fujitsu->bl_device);
1139 fujitsu->bl_device = NULL;
1140 goto fail_sysfs_group;
1141 }
1142 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1143 }
1144
1145 ret = platform_driver_register(&fujitsupf_driver);
1146 if (ret)
1147 goto fail_backlight;
1148
1149 /* Register hotkey driver */
1150
1151 fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1152 if (!fujitsu_hotkey) {
1153 ret = -ENOMEM;
1154 goto fail_hotkey;
1155 }
1156
1157 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1158 if (result < 0) {
1159 ret = -ENODEV;
1160 goto fail_hotkey1;
1161 }
1162
1163 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1164
1165 if (!acpi_video_backlight_support()) {
1166 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1167 fujitsu->bl_device->props.power = 4;
1168 else
1169 fujitsu->bl_device->props.power = 0;
1170 }
1171
1172 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1173
1174 return 0;
1175
1176fail_hotkey1:
1177 kfree(fujitsu_hotkey);
1178fail_hotkey:
1179 platform_driver_unregister(&fujitsupf_driver);
1180fail_backlight:
1181 if (fujitsu->bl_device)
1182 backlight_device_unregister(fujitsu->bl_device);
1183fail_sysfs_group:
1184 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1185 &fujitsupf_attribute_group);
1186fail_platform_device2:
1187 platform_device_del(fujitsu->pf_device);
1188fail_platform_device1:
1189 platform_device_put(fujitsu->pf_device);
1190fail_platform_driver:
1191 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1192fail_acpi:
1193 kfree(fujitsu);
1194
1195 return ret;
1196}
1197
1198static void __exit fujitsu_cleanup(void)
1199{
1200 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1201
1202 kfree(fujitsu_hotkey);
1203
1204 platform_driver_unregister(&fujitsupf_driver);
1205
1206 if (fujitsu->bl_device)
1207 backlight_device_unregister(fujitsu->bl_device);
1208
1209 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1210 &fujitsupf_attribute_group);
1211
1212 platform_device_unregister(fujitsu->pf_device);
1213
1214 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1215
1216 kfree(fujitsu);
1217
1218 pr_info("driver unloaded\n");
1219}
1220
1221module_init(fujitsu_init);
1222module_exit(fujitsu_cleanup);
1223
1224module_param(use_alt_lcd_levels, uint, 0644);
1225MODULE_PARM_DESC(use_alt_lcd_levels,
1226 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1227module_param(disable_brightness_adjust, uint, 0644);
1228MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1229#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1230module_param_named(debug, dbg_level, uint, 0644);
1231MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1232#endif
1233
1234MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1235MODULE_DESCRIPTION("Fujitsu laptop extras support");
1236MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1237MODULE_LICENSE("GPL");
1238
1239MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1240MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1241MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1242
1243static struct pnp_device_id pnp_ids[] __used = {
1244 {.id = "FUJ02bf"},
1245 {.id = "FUJ02B1"},
1246 {.id = "FUJ02E3"},
1247 {.id = ""}
1248};
1249
1250MODULE_DEVICE_TABLE(pnp, pnp_ids);
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 IS_ENABLED(CONFIG_LEDS_CLASS)
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/* FUNC interface - command values */
92#define FUNC_RFKILL 0x1000
93#define FUNC_LEDS 0x1001
94#define FUNC_BUTTONS 0x1002
95#define FUNC_BACKLIGHT 0x1004
96
97/* FUNC interface - responses */
98#define UNSUPPORTED_CMD 0x80000000
99
100#if IS_ENABLED(CONFIG_LEDS_CLASS)
101/* FUNC interface - LED control */
102#define FUNC_LED_OFF 0x1
103#define FUNC_LED_ON 0x30001
104#define KEYBOARD_LAMPS 0x100
105#define LOGOLAMP_POWERON 0x2000
106#define LOGOLAMP_ALWAYS 0x4000
107#define RADIO_LED_ON 0x20
108#define ECO_LED 0x10000
109#define ECO_LED_ON 0x80000
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_DBG_ERROR 0x0001
124#define FUJLAPTOP_DBG_WARN 0x0002
125#define FUJLAPTOP_DBG_INFO 0x0004
126#define FUJLAPTOP_DBG_TRACE 0x0008
127
128#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
129#define vdbg_printk(a_dbg_level, format, arg...) \
130 do { if (dbg_level & a_dbg_level) \
131 printk(KERN_DEBUG pr_fmt("%s: " format), __func__, ## arg); \
132 } while (0)
133#else
134#define vdbg_printk(a_dbg_level, format, arg...) \
135 do { } while (0)
136#endif
137
138/* Device controlling the backlight and associated keys */
139struct fujitsu_t {
140 acpi_handle acpi_handle;
141 struct acpi_device *dev;
142 struct input_dev *input;
143 char phys[32];
144 struct backlight_device *bl_device;
145 struct platform_device *pf_device;
146 int keycode1, keycode2, keycode3, keycode4, keycode5;
147
148 unsigned int max_brightness;
149 unsigned int brightness_changed;
150 unsigned int brightness_level;
151};
152
153static struct fujitsu_t *fujitsu;
154static int use_alt_lcd_levels = -1;
155static int disable_brightness_adjust = -1;
156
157/* Device used to access other hotkeys on the laptop */
158struct fujitsu_hotkey_t {
159 acpi_handle acpi_handle;
160 struct acpi_device *dev;
161 struct input_dev *input;
162 char phys[32];
163 struct platform_device *pf_device;
164 struct kfifo fifo;
165 spinlock_t fifo_lock;
166 int rfkill_supported;
167 int rfkill_state;
168 int logolamp_registered;
169 int kblamps_registered;
170 int radio_led_registered;
171 int eco_led_registered;
172};
173
174static struct fujitsu_hotkey_t *fujitsu_hotkey;
175
176static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
177
178#if IS_ENABLED(CONFIG_LEDS_CLASS)
179static enum led_brightness logolamp_get(struct led_classdev *cdev);
180static int logolamp_set(struct led_classdev *cdev,
181 enum led_brightness brightness);
182
183static struct led_classdev logolamp_led = {
184 .name = "fujitsu::logolamp",
185 .brightness_get = logolamp_get,
186 .brightness_set_blocking = logolamp_set
187};
188
189static enum led_brightness kblamps_get(struct led_classdev *cdev);
190static int kblamps_set(struct led_classdev *cdev,
191 enum led_brightness brightness);
192
193static struct led_classdev kblamps_led = {
194 .name = "fujitsu::kblamps",
195 .brightness_get = kblamps_get,
196 .brightness_set_blocking = kblamps_set
197};
198
199static enum led_brightness radio_led_get(struct led_classdev *cdev);
200static int radio_led_set(struct led_classdev *cdev,
201 enum led_brightness brightness);
202
203static struct led_classdev radio_led = {
204 .name = "fujitsu::radio_led",
205 .brightness_get = radio_led_get,
206 .brightness_set_blocking = radio_led_set
207};
208
209static enum led_brightness eco_led_get(struct led_classdev *cdev);
210static int eco_led_set(struct led_classdev *cdev,
211 enum led_brightness brightness);
212
213static struct led_classdev eco_led = {
214 .name = "fujitsu::eco_led",
215 .brightness_get = eco_led_get,
216 .brightness_set_blocking = eco_led_set
217};
218#endif
219
220#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
221static u32 dbg_level = 0x03;
222#endif
223
224static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
225
226/* Fujitsu ACPI interface function */
227
228static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
229{
230 acpi_status status = AE_OK;
231 union acpi_object params[4] = {
232 { .type = ACPI_TYPE_INTEGER },
233 { .type = ACPI_TYPE_INTEGER },
234 { .type = ACPI_TYPE_INTEGER },
235 { .type = ACPI_TYPE_INTEGER }
236 };
237 struct acpi_object_list arg_list = { 4, ¶ms[0] };
238 unsigned long long value;
239 acpi_handle handle = NULL;
240
241 status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
242 if (ACPI_FAILURE(status)) {
243 vdbg_printk(FUJLAPTOP_DBG_ERROR,
244 "FUNC interface is not present\n");
245 return -ENODEV;
246 }
247
248 params[0].integer.value = cmd;
249 params[1].integer.value = arg0;
250 params[2].integer.value = arg1;
251 params[3].integer.value = arg2;
252
253 status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
254 if (ACPI_FAILURE(status)) {
255 vdbg_printk(FUJLAPTOP_DBG_WARN,
256 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
257 cmd, arg0, arg1, arg2);
258 return -ENODEV;
259 }
260
261 vdbg_printk(FUJLAPTOP_DBG_TRACE,
262 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
263 cmd, arg0, arg1, arg2, (int)value);
264 return value;
265}
266
267#if IS_ENABLED(CONFIG_LEDS_CLASS)
268/* LED class callbacks */
269
270static int logolamp_set(struct led_classdev *cdev,
271 enum led_brightness brightness)
272{
273 if (brightness >= LED_FULL) {
274 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
275 return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
276 } else if (brightness >= LED_HALF) {
277 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
278 return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
279 } else {
280 return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
281 }
282}
283
284static int kblamps_set(struct led_classdev *cdev,
285 enum led_brightness brightness)
286{
287 if (brightness >= LED_FULL)
288 return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
289 else
290 return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
291}
292
293static int radio_led_set(struct led_classdev *cdev,
294 enum led_brightness brightness)
295{
296 if (brightness >= LED_FULL)
297 return call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, RADIO_LED_ON);
298 else
299 return call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, 0x0);
300}
301
302static int eco_led_set(struct led_classdev *cdev,
303 enum led_brightness brightness)
304{
305 int curr;
306
307 curr = call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0);
308 if (brightness >= LED_FULL)
309 return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr | ECO_LED_ON);
310 else
311 return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr & ~ECO_LED_ON);
312}
313
314static enum led_brightness logolamp_get(struct led_classdev *cdev)
315{
316 enum led_brightness brightness = LED_OFF;
317 int poweron, always;
318
319 poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
320 if (poweron == FUNC_LED_ON) {
321 brightness = LED_HALF;
322 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
323 if (always == FUNC_LED_ON)
324 brightness = LED_FULL;
325 }
326 return brightness;
327}
328
329static enum led_brightness kblamps_get(struct led_classdev *cdev)
330{
331 enum led_brightness brightness = LED_OFF;
332
333 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
334 brightness = LED_FULL;
335
336 return brightness;
337}
338
339static enum led_brightness radio_led_get(struct led_classdev *cdev)
340{
341 enum led_brightness brightness = LED_OFF;
342
343 if (call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0) & RADIO_LED_ON)
344 brightness = LED_FULL;
345
346 return brightness;
347}
348
349static enum led_brightness eco_led_get(struct led_classdev *cdev)
350{
351 enum led_brightness brightness = LED_OFF;
352
353 if (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
354 brightness = LED_FULL;
355
356 return brightness;
357}
358#endif
359
360/* Hardware access for LCD brightness control */
361
362static int set_lcd_level(int level)
363{
364 acpi_status status = AE_OK;
365 acpi_handle handle = NULL;
366
367 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
368 level);
369
370 if (level < 0 || level >= fujitsu->max_brightness)
371 return -EINVAL;
372
373 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
374 if (ACPI_FAILURE(status)) {
375 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
376 return -ENODEV;
377 }
378
379
380 status = acpi_execute_simple_method(handle, NULL, level);
381 if (ACPI_FAILURE(status))
382 return -ENODEV;
383
384 return 0;
385}
386
387static int set_lcd_level_alt(int level)
388{
389 acpi_status status = AE_OK;
390 acpi_handle handle = NULL;
391
392 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
393 level);
394
395 if (level < 0 || level >= fujitsu->max_brightness)
396 return -EINVAL;
397
398 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
399 if (ACPI_FAILURE(status)) {
400 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
401 return -ENODEV;
402 }
403
404 status = acpi_execute_simple_method(handle, NULL, level);
405 if (ACPI_FAILURE(status))
406 return -ENODEV;
407
408 return 0;
409}
410
411static int get_lcd_level(void)
412{
413 unsigned long long state = 0;
414 acpi_status status = AE_OK;
415
416 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
417
418 status =
419 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
420 if (ACPI_FAILURE(status))
421 return 0;
422
423 fujitsu->brightness_level = state & 0x0fffffff;
424
425 if (state & 0x80000000)
426 fujitsu->brightness_changed = 1;
427 else
428 fujitsu->brightness_changed = 0;
429
430 return fujitsu->brightness_level;
431}
432
433static int get_max_brightness(void)
434{
435 unsigned long long state = 0;
436 acpi_status status = AE_OK;
437
438 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
439
440 status =
441 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
442 if (ACPI_FAILURE(status))
443 return -1;
444
445 fujitsu->max_brightness = state;
446
447 return fujitsu->max_brightness;
448}
449
450/* Backlight device stuff */
451
452static int bl_get_brightness(struct backlight_device *b)
453{
454 return get_lcd_level();
455}
456
457static int bl_update_status(struct backlight_device *b)
458{
459 int ret;
460 if (b->props.power == FB_BLANK_POWERDOWN)
461 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
462 else
463 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
464 if (ret != 0)
465 vdbg_printk(FUJLAPTOP_DBG_ERROR,
466 "Unable to adjust backlight power, error code %i\n",
467 ret);
468
469 if (use_alt_lcd_levels)
470 ret = set_lcd_level_alt(b->props.brightness);
471 else
472 ret = set_lcd_level(b->props.brightness);
473 if (ret != 0)
474 vdbg_printk(FUJLAPTOP_DBG_ERROR,
475 "Unable to adjust LCD brightness, error code %i\n",
476 ret);
477 return ret;
478}
479
480static const struct backlight_ops fujitsubl_ops = {
481 .get_brightness = bl_get_brightness,
482 .update_status = bl_update_status,
483};
484
485/* Platform LCD brightness device */
486
487static ssize_t
488show_max_brightness(struct device *dev,
489 struct device_attribute *attr, char *buf)
490{
491
492 int ret;
493
494 ret = get_max_brightness();
495 if (ret < 0)
496 return ret;
497
498 return sprintf(buf, "%i\n", ret);
499}
500
501static ssize_t
502show_brightness_changed(struct device *dev,
503 struct device_attribute *attr, char *buf)
504{
505
506 int ret;
507
508 ret = fujitsu->brightness_changed;
509 if (ret < 0)
510 return ret;
511
512 return sprintf(buf, "%i\n", ret);
513}
514
515static ssize_t show_lcd_level(struct device *dev,
516 struct device_attribute *attr, char *buf)
517{
518
519 int ret;
520
521 ret = get_lcd_level();
522 if (ret < 0)
523 return ret;
524
525 return sprintf(buf, "%i\n", ret);
526}
527
528static ssize_t store_lcd_level(struct device *dev,
529 struct device_attribute *attr, const char *buf,
530 size_t count)
531{
532
533 int level, ret;
534
535 if (sscanf(buf, "%i", &level) != 1
536 || (level < 0 || level >= fujitsu->max_brightness))
537 return -EINVAL;
538
539 if (use_alt_lcd_levels)
540 ret = set_lcd_level_alt(level);
541 else
542 ret = set_lcd_level(level);
543 if (ret < 0)
544 return ret;
545
546 ret = get_lcd_level();
547 if (ret < 0)
548 return ret;
549
550 return count;
551}
552
553static ssize_t
554ignore_store(struct device *dev,
555 struct device_attribute *attr, const char *buf, size_t count)
556{
557 return count;
558}
559
560static ssize_t
561show_lid_state(struct device *dev,
562 struct device_attribute *attr, char *buf)
563{
564 if (!(fujitsu_hotkey->rfkill_supported & 0x100))
565 return sprintf(buf, "unknown\n");
566 if (fujitsu_hotkey->rfkill_state & 0x100)
567 return sprintf(buf, "open\n");
568 else
569 return sprintf(buf, "closed\n");
570}
571
572static ssize_t
573show_dock_state(struct device *dev,
574 struct device_attribute *attr, char *buf)
575{
576 if (!(fujitsu_hotkey->rfkill_supported & 0x200))
577 return sprintf(buf, "unknown\n");
578 if (fujitsu_hotkey->rfkill_state & 0x200)
579 return sprintf(buf, "docked\n");
580 else
581 return sprintf(buf, "undocked\n");
582}
583
584static ssize_t
585show_radios_state(struct device *dev,
586 struct device_attribute *attr, char *buf)
587{
588 if (!(fujitsu_hotkey->rfkill_supported & 0x20))
589 return sprintf(buf, "unknown\n");
590 if (fujitsu_hotkey->rfkill_state & 0x20)
591 return sprintf(buf, "on\n");
592 else
593 return sprintf(buf, "killed\n");
594}
595
596static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
597static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
598 ignore_store);
599static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
600static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
601static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
602static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
603
604static struct attribute *fujitsupf_attributes[] = {
605 &dev_attr_brightness_changed.attr,
606 &dev_attr_max_brightness.attr,
607 &dev_attr_lcd_level.attr,
608 &dev_attr_lid.attr,
609 &dev_attr_dock.attr,
610 &dev_attr_radios.attr,
611 NULL
612};
613
614static struct attribute_group fujitsupf_attribute_group = {
615 .attrs = fujitsupf_attributes
616};
617
618static struct platform_driver fujitsupf_driver = {
619 .driver = {
620 .name = "fujitsu-laptop",
621 }
622};
623
624static void __init dmi_check_cb_common(const struct dmi_system_id *id)
625{
626 pr_info("Identified laptop model '%s'\n", id->ident);
627 if (use_alt_lcd_levels == -1) {
628 if (acpi_has_method(NULL,
629 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
630 use_alt_lcd_levels = 1;
631 else
632 use_alt_lcd_levels = 0;
633 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
634 "%i\n", use_alt_lcd_levels);
635 }
636}
637
638static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
639{
640 dmi_check_cb_common(id);
641 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
642 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
643 return 1;
644}
645
646static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
647{
648 dmi_check_cb_common(id);
649 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
650 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
651 return 1;
652}
653
654static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
655{
656 dmi_check_cb_common(id);
657 fujitsu->keycode1 = KEY_HELP; /* "Support" */
658 fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
659 fujitsu->keycode4 = KEY_WWW; /* "Internet" */
660 return 1;
661}
662
663static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
664 {
665 .ident = "Fujitsu Siemens S6410",
666 .matches = {
667 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
668 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
669 },
670 .callback = dmi_check_cb_s6410},
671 {
672 .ident = "Fujitsu Siemens S6420",
673 .matches = {
674 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
675 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
676 },
677 .callback = dmi_check_cb_s6420},
678 {
679 .ident = "Fujitsu LifeBook P8010",
680 .matches = {
681 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
682 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
683 },
684 .callback = dmi_check_cb_p8010},
685 {}
686};
687
688/* ACPI device for LCD brightness control */
689
690static int acpi_fujitsu_add(struct acpi_device *device)
691{
692 int state = 0;
693 struct input_dev *input;
694 int error;
695
696 if (!device)
697 return -EINVAL;
698
699 fujitsu->acpi_handle = device->handle;
700 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
701 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
702 device->driver_data = fujitsu;
703
704 fujitsu->input = input = input_allocate_device();
705 if (!input) {
706 error = -ENOMEM;
707 goto err_stop;
708 }
709
710 snprintf(fujitsu->phys, sizeof(fujitsu->phys),
711 "%s/video/input0", acpi_device_hid(device));
712
713 input->name = acpi_device_name(device);
714 input->phys = fujitsu->phys;
715 input->id.bustype = BUS_HOST;
716 input->id.product = 0x06;
717 input->dev.parent = &device->dev;
718 input->evbit[0] = BIT(EV_KEY);
719 set_bit(KEY_BRIGHTNESSUP, input->keybit);
720 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
721 set_bit(KEY_UNKNOWN, input->keybit);
722
723 error = input_register_device(input);
724 if (error)
725 goto err_free_input_dev;
726
727 error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
728 if (error) {
729 pr_err("Error reading power state\n");
730 goto err_unregister_input_dev;
731 }
732
733 pr_info("ACPI: %s [%s] (%s)\n",
734 acpi_device_name(device), acpi_device_bid(device),
735 !device->power.state ? "on" : "off");
736
737 fujitsu->dev = device;
738
739 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
740 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
741 if (ACPI_FAILURE
742 (acpi_evaluate_object
743 (device->handle, METHOD_NAME__INI, NULL, NULL)))
744 pr_err("_INI Method failed\n");
745 }
746
747 /* do config (detect defaults) */
748 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
749 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
750 vdbg_printk(FUJLAPTOP_DBG_INFO,
751 "config: [alt interface: %d], [adjust disable: %d]\n",
752 use_alt_lcd_levels, disable_brightness_adjust);
753
754 if (get_max_brightness() <= 0)
755 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
756 get_lcd_level();
757
758 return 0;
759
760err_unregister_input_dev:
761 input_unregister_device(input);
762 input = NULL;
763err_free_input_dev:
764 input_free_device(input);
765err_stop:
766 return error;
767}
768
769static int acpi_fujitsu_remove(struct acpi_device *device)
770{
771 struct fujitsu_t *fujitsu = acpi_driver_data(device);
772 struct input_dev *input = fujitsu->input;
773
774 input_unregister_device(input);
775
776 fujitsu->acpi_handle = NULL;
777
778 return 0;
779}
780
781/* Brightness notify */
782
783static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
784{
785 struct input_dev *input;
786 int keycode;
787 int oldb, newb;
788
789 input = fujitsu->input;
790
791 switch (event) {
792 case ACPI_FUJITSU_NOTIFY_CODE1:
793 keycode = 0;
794 oldb = fujitsu->brightness_level;
795 get_lcd_level();
796 newb = fujitsu->brightness_level;
797
798 vdbg_printk(FUJLAPTOP_DBG_TRACE,
799 "brightness button event [%i -> %i (%i)]\n",
800 oldb, newb, fujitsu->brightness_changed);
801
802 if (oldb < newb) {
803 if (disable_brightness_adjust != 1) {
804 if (use_alt_lcd_levels)
805 set_lcd_level_alt(newb);
806 else
807 set_lcd_level(newb);
808 }
809 keycode = KEY_BRIGHTNESSUP;
810 } else if (oldb > newb) {
811 if (disable_brightness_adjust != 1) {
812 if (use_alt_lcd_levels)
813 set_lcd_level_alt(newb);
814 else
815 set_lcd_level(newb);
816 }
817 keycode = KEY_BRIGHTNESSDOWN;
818 }
819 break;
820 default:
821 keycode = KEY_UNKNOWN;
822 vdbg_printk(FUJLAPTOP_DBG_WARN,
823 "unsupported event [0x%x]\n", event);
824 break;
825 }
826
827 if (keycode != 0) {
828 input_report_key(input, keycode, 1);
829 input_sync(input);
830 input_report_key(input, keycode, 0);
831 input_sync(input);
832 }
833}
834
835/* ACPI device for hotkey handling */
836
837static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
838{
839 int result = 0;
840 int state = 0;
841 struct input_dev *input;
842 int error;
843 int i;
844
845 if (!device)
846 return -EINVAL;
847
848 fujitsu_hotkey->acpi_handle = device->handle;
849 sprintf(acpi_device_name(device), "%s",
850 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
851 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
852 device->driver_data = fujitsu_hotkey;
853
854 /* kfifo */
855 spin_lock_init(&fujitsu_hotkey->fifo_lock);
856 error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
857 GFP_KERNEL);
858 if (error) {
859 pr_err("kfifo_alloc failed\n");
860 goto err_stop;
861 }
862
863 fujitsu_hotkey->input = input = input_allocate_device();
864 if (!input) {
865 error = -ENOMEM;
866 goto err_free_fifo;
867 }
868
869 snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
870 "%s/video/input0", acpi_device_hid(device));
871
872 input->name = acpi_device_name(device);
873 input->phys = fujitsu_hotkey->phys;
874 input->id.bustype = BUS_HOST;
875 input->id.product = 0x06;
876 input->dev.parent = &device->dev;
877
878 set_bit(EV_KEY, input->evbit);
879 set_bit(fujitsu->keycode1, input->keybit);
880 set_bit(fujitsu->keycode2, input->keybit);
881 set_bit(fujitsu->keycode3, input->keybit);
882 set_bit(fujitsu->keycode4, input->keybit);
883 set_bit(fujitsu->keycode5, input->keybit);
884 set_bit(KEY_TOUCHPAD_TOGGLE, input->keybit);
885 set_bit(KEY_UNKNOWN, input->keybit);
886
887 error = input_register_device(input);
888 if (error)
889 goto err_free_input_dev;
890
891 error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
892 if (error) {
893 pr_err("Error reading power state\n");
894 goto err_unregister_input_dev;
895 }
896
897 pr_info("ACPI: %s [%s] (%s)\n",
898 acpi_device_name(device), acpi_device_bid(device),
899 !device->power.state ? "on" : "off");
900
901 fujitsu_hotkey->dev = device;
902
903 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
904 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
905 if (ACPI_FAILURE
906 (acpi_evaluate_object
907 (device->handle, METHOD_NAME__INI, NULL, NULL)))
908 pr_err("_INI Method failed\n");
909 }
910
911 i = 0;
912 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
913 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
914 ; /* No action, result is discarded */
915 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
916
917 fujitsu_hotkey->rfkill_supported =
918 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
919
920 /* Make sure our bitmask of supported functions is cleared if the
921 RFKILL function block is not implemented, like on the S7020. */
922 if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
923 fujitsu_hotkey->rfkill_supported = 0;
924
925 if (fujitsu_hotkey->rfkill_supported)
926 fujitsu_hotkey->rfkill_state =
927 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
928
929 /* Suspect this is a keymap of the application panel, print it */
930 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
931
932#if IS_ENABLED(CONFIG_LEDS_CLASS)
933 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
934 result = led_classdev_register(&fujitsu->pf_device->dev,
935 &logolamp_led);
936 if (result == 0) {
937 fujitsu_hotkey->logolamp_registered = 1;
938 } else {
939 pr_err("Could not register LED handler for logo lamp, error %i\n",
940 result);
941 }
942 }
943
944 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
945 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
946 result = led_classdev_register(&fujitsu->pf_device->dev,
947 &kblamps_led);
948 if (result == 0) {
949 fujitsu_hotkey->kblamps_registered = 1;
950 } else {
951 pr_err("Could not register LED handler for keyboard lamps, error %i\n",
952 result);
953 }
954 }
955
956 /*
957 * BTNI bit 24 seems to indicate the presence of a radio toggle
958 * button in place of a slide switch, and all such machines appear
959 * to also have an RF LED. Therefore use bit 24 as an indicator
960 * that an RF LED is present.
961 */
962 if (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
963 result = led_classdev_register(&fujitsu->pf_device->dev,
964 &radio_led);
965 if (result == 0) {
966 fujitsu_hotkey->radio_led_registered = 1;
967 } else {
968 pr_err("Could not register LED handler for radio LED, error %i\n",
969 result);
970 }
971 }
972
973 /* Support for eco led is not always signaled in bit corresponding
974 * to the bit used to control the led. According to the DSDT table,
975 * bit 14 seems to indicate presence of said led as well.
976 * Confirm by testing the status.
977 */
978 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
979 (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
980 result = led_classdev_register(&fujitsu->pf_device->dev,
981 &eco_led);
982 if (result == 0) {
983 fujitsu_hotkey->eco_led_registered = 1;
984 } else {
985 pr_err("Could not register LED handler for eco LED, error %i\n",
986 result);
987 }
988 }
989#endif
990
991 return result;
992
993err_unregister_input_dev:
994 input_unregister_device(input);
995 input = NULL;
996err_free_input_dev:
997 input_free_device(input);
998err_free_fifo:
999 kfifo_free(&fujitsu_hotkey->fifo);
1000err_stop:
1001 return error;
1002}
1003
1004static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
1005{
1006 struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
1007 struct input_dev *input = fujitsu_hotkey->input;
1008
1009#if IS_ENABLED(CONFIG_LEDS_CLASS)
1010 if (fujitsu_hotkey->logolamp_registered)
1011 led_classdev_unregister(&logolamp_led);
1012
1013 if (fujitsu_hotkey->kblamps_registered)
1014 led_classdev_unregister(&kblamps_led);
1015
1016 if (fujitsu_hotkey->radio_led_registered)
1017 led_classdev_unregister(&radio_led);
1018
1019 if (fujitsu_hotkey->eco_led_registered)
1020 led_classdev_unregister(&eco_led);
1021#endif
1022
1023 input_unregister_device(input);
1024
1025 kfifo_free(&fujitsu_hotkey->fifo);
1026
1027 fujitsu_hotkey->acpi_handle = NULL;
1028
1029 return 0;
1030}
1031
1032static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
1033{
1034 struct input_dev *input;
1035 int keycode, keycode_r;
1036 unsigned int irb = 1;
1037 int i, status;
1038
1039 input = fujitsu_hotkey->input;
1040
1041 if (fujitsu_hotkey->rfkill_supported)
1042 fujitsu_hotkey->rfkill_state =
1043 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
1044
1045 switch (event) {
1046 case ACPI_FUJITSU_NOTIFY_CODE1:
1047 i = 0;
1048 while ((irb =
1049 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
1050 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
1051 switch (irb & 0x4ff) {
1052 case KEY1_CODE:
1053 keycode = fujitsu->keycode1;
1054 break;
1055 case KEY2_CODE:
1056 keycode = fujitsu->keycode2;
1057 break;
1058 case KEY3_CODE:
1059 keycode = fujitsu->keycode3;
1060 break;
1061 case KEY4_CODE:
1062 keycode = fujitsu->keycode4;
1063 break;
1064 case KEY5_CODE:
1065 keycode = fujitsu->keycode5;
1066 break;
1067 case 0:
1068 keycode = 0;
1069 break;
1070 default:
1071 vdbg_printk(FUJLAPTOP_DBG_WARN,
1072 "Unknown GIRB result [%x]\n", irb);
1073 keycode = -1;
1074 break;
1075 }
1076 if (keycode > 0) {
1077 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1078 "Push keycode into ringbuffer [%d]\n",
1079 keycode);
1080 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
1081 (unsigned char *)&keycode,
1082 sizeof(keycode),
1083 &fujitsu_hotkey->fifo_lock);
1084 if (status != sizeof(keycode)) {
1085 vdbg_printk(FUJLAPTOP_DBG_WARN,
1086 "Could not push keycode [0x%x]\n",
1087 keycode);
1088 } else {
1089 input_report_key(input, keycode, 1);
1090 input_sync(input);
1091 }
1092 } else if (keycode == 0) {
1093 while ((status =
1094 kfifo_out_locked(
1095 &fujitsu_hotkey->fifo,
1096 (unsigned char *) &keycode_r,
1097 sizeof(keycode_r),
1098 &fujitsu_hotkey->fifo_lock))
1099 == sizeof(keycode_r)) {
1100 input_report_key(input, keycode_r, 0);
1101 input_sync(input);
1102 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1103 "Pop keycode from ringbuffer [%d]\n",
1104 keycode_r);
1105 }
1106 }
1107 }
1108
1109 /* On some models (first seen on the Skylake-based Lifebook
1110 * E736/E746/E756), the touchpad toggle hotkey (Fn+F4) is
1111 * handled in software; its state is queried using FUNC_RFKILL
1112 */
1113 if ((fujitsu_hotkey->rfkill_supported & BIT(26)) &&
1114 (call_fext_func(FUNC_RFKILL, 0x1, 0x0, 0x0) & BIT(26))) {
1115 keycode = KEY_TOUCHPAD_TOGGLE;
1116 input_report_key(input, keycode, 1);
1117 input_sync(input);
1118 input_report_key(input, keycode, 0);
1119 input_sync(input);
1120 }
1121
1122 break;
1123 default:
1124 keycode = KEY_UNKNOWN;
1125 vdbg_printk(FUJLAPTOP_DBG_WARN,
1126 "Unsupported event [0x%x]\n", event);
1127 input_report_key(input, keycode, 1);
1128 input_sync(input);
1129 input_report_key(input, keycode, 0);
1130 input_sync(input);
1131 break;
1132 }
1133}
1134
1135/* Initialization */
1136
1137static const struct acpi_device_id fujitsu_device_ids[] = {
1138 {ACPI_FUJITSU_HID, 0},
1139 {"", 0},
1140};
1141
1142static struct acpi_driver acpi_fujitsu_driver = {
1143 .name = ACPI_FUJITSU_DRIVER_NAME,
1144 .class = ACPI_FUJITSU_CLASS,
1145 .ids = fujitsu_device_ids,
1146 .ops = {
1147 .add = acpi_fujitsu_add,
1148 .remove = acpi_fujitsu_remove,
1149 .notify = acpi_fujitsu_notify,
1150 },
1151};
1152
1153static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1154 {ACPI_FUJITSU_HOTKEY_HID, 0},
1155 {"", 0},
1156};
1157
1158static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1159 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1160 .class = ACPI_FUJITSU_CLASS,
1161 .ids = fujitsu_hotkey_device_ids,
1162 .ops = {
1163 .add = acpi_fujitsu_hotkey_add,
1164 .remove = acpi_fujitsu_hotkey_remove,
1165 .notify = acpi_fujitsu_hotkey_notify,
1166 },
1167};
1168
1169static const struct acpi_device_id fujitsu_ids[] __used = {
1170 {ACPI_FUJITSU_HID, 0},
1171 {ACPI_FUJITSU_HOTKEY_HID, 0},
1172 {"", 0}
1173};
1174MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1175
1176static int __init fujitsu_init(void)
1177{
1178 int ret, result, max_brightness;
1179
1180 if (acpi_disabled)
1181 return -ENODEV;
1182
1183 fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1184 if (!fujitsu)
1185 return -ENOMEM;
1186 fujitsu->keycode1 = KEY_PROG1;
1187 fujitsu->keycode2 = KEY_PROG2;
1188 fujitsu->keycode3 = KEY_PROG3;
1189 fujitsu->keycode4 = KEY_PROG4;
1190 fujitsu->keycode5 = KEY_RFKILL;
1191 dmi_check_system(fujitsu_dmi_table);
1192
1193 result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1194 if (result < 0) {
1195 ret = -ENODEV;
1196 goto fail_acpi;
1197 }
1198
1199 /* Register platform stuff */
1200
1201 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1202 if (!fujitsu->pf_device) {
1203 ret = -ENOMEM;
1204 goto fail_platform_driver;
1205 }
1206
1207 ret = platform_device_add(fujitsu->pf_device);
1208 if (ret)
1209 goto fail_platform_device1;
1210
1211 ret =
1212 sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1213 &fujitsupf_attribute_group);
1214 if (ret)
1215 goto fail_platform_device2;
1216
1217 /* Register backlight stuff */
1218
1219 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1220 struct backlight_properties props;
1221
1222 memset(&props, 0, sizeof(struct backlight_properties));
1223 max_brightness = fujitsu->max_brightness;
1224 props.type = BACKLIGHT_PLATFORM;
1225 props.max_brightness = max_brightness - 1;
1226 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1227 NULL, NULL,
1228 &fujitsubl_ops,
1229 &props);
1230 if (IS_ERR(fujitsu->bl_device)) {
1231 ret = PTR_ERR(fujitsu->bl_device);
1232 fujitsu->bl_device = NULL;
1233 goto fail_sysfs_group;
1234 }
1235 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1236 }
1237
1238 ret = platform_driver_register(&fujitsupf_driver);
1239 if (ret)
1240 goto fail_backlight;
1241
1242 /* Register hotkey driver */
1243
1244 fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1245 if (!fujitsu_hotkey) {
1246 ret = -ENOMEM;
1247 goto fail_hotkey;
1248 }
1249
1250 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1251 if (result < 0) {
1252 ret = -ENODEV;
1253 goto fail_hotkey1;
1254 }
1255
1256 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1257 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1258 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1259 fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN;
1260 else
1261 fujitsu->bl_device->props.power = FB_BLANK_UNBLANK;
1262 }
1263
1264 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1265
1266 return 0;
1267
1268fail_hotkey1:
1269 kfree(fujitsu_hotkey);
1270fail_hotkey:
1271 platform_driver_unregister(&fujitsupf_driver);
1272fail_backlight:
1273 backlight_device_unregister(fujitsu->bl_device);
1274fail_sysfs_group:
1275 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1276 &fujitsupf_attribute_group);
1277fail_platform_device2:
1278 platform_device_del(fujitsu->pf_device);
1279fail_platform_device1:
1280 platform_device_put(fujitsu->pf_device);
1281fail_platform_driver:
1282 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1283fail_acpi:
1284 kfree(fujitsu);
1285
1286 return ret;
1287}
1288
1289static void __exit fujitsu_cleanup(void)
1290{
1291 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1292
1293 kfree(fujitsu_hotkey);
1294
1295 platform_driver_unregister(&fujitsupf_driver);
1296
1297 backlight_device_unregister(fujitsu->bl_device);
1298
1299 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1300 &fujitsupf_attribute_group);
1301
1302 platform_device_unregister(fujitsu->pf_device);
1303
1304 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1305
1306 kfree(fujitsu);
1307
1308 pr_info("driver unloaded\n");
1309}
1310
1311module_init(fujitsu_init);
1312module_exit(fujitsu_cleanup);
1313
1314module_param(use_alt_lcd_levels, uint, 0644);
1315MODULE_PARM_DESC(use_alt_lcd_levels,
1316 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1317module_param(disable_brightness_adjust, uint, 0644);
1318MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1319#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1320module_param_named(debug, dbg_level, uint, 0644);
1321MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1322#endif
1323
1324MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1325MODULE_DESCRIPTION("Fujitsu laptop extras support");
1326MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1327MODULE_LICENSE("GPL");
1328
1329MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1330MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1331MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");