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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 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:*");