f999fba0e25e72a39f1d9a1ee7a126ad7cd87285
[linux-2.6.git] / drivers / platform / x86 / fujitsu-laptop.c
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 #include <linux/module.h>
60 #include <linux/kernel.h>
61 #include <linux/init.h>
62 #include <linux/acpi.h>
63 #include <linux/dmi.h>
64 #include <linux/backlight.h>
65 #include <linux/input.h>
66 #include <linux/kfifo.h>
67 #include <linux/video_output.h>
68 #include <linux/platform_device.h>
69 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
70 #include <linux/leds.h>
71 #endif
72
73 #define FUJITSU_DRIVER_VERSION "0.6.0"
74
75 #define FUJITSU_LCD_N_LEVELS 8
76
77 #define ACPI_FUJITSU_CLASS              "fujitsu"
78 #define ACPI_FUJITSU_HID                "FUJ02B1"
79 #define ACPI_FUJITSU_DRIVER_NAME        "Fujitsu laptop FUJ02B1 ACPI brightness driver"
80 #define ACPI_FUJITSU_DEVICE_NAME        "Fujitsu FUJ02B1"
81 #define ACPI_FUJITSU_HOTKEY_HID         "FUJ02E3"
82 #define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
83 #define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
84
85 #define ACPI_FUJITSU_NOTIFY_CODE1     0x80
86
87 #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS     0x86
88 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
89
90 /* FUNC interface - command values */
91 #define FUNC_RFKILL     0x1000
92 #define FUNC_LEDS       0x1001
93 #define FUNC_BUTTONS    0x1002
94 #define FUNC_BACKLIGHT  0x1004
95
96 /* FUNC interface - responses */
97 #define UNSUPPORTED_CMD 0x80000000
98
99 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
100 /* FUNC interface - LED control */
101 #define FUNC_LED_OFF    0x1
102 #define FUNC_LED_ON     0x30001
103 #define KEYBOARD_LAMPS  0x100
104 #define LOGOLAMP_POWERON 0x2000
105 #define LOGOLAMP_ALWAYS  0x4000
106 #endif
107
108 /* Hotkey details */
109 #define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
110 #define KEY2_CODE       0x411
111 #define KEY3_CODE       0x412
112 #define KEY4_CODE       0x413
113
114 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
115 #define RINGBUFFERSIZE 40
116
117 /* Debugging */
118 #define FUJLAPTOP_LOG      ACPI_FUJITSU_HID ": "
119 #define FUJLAPTOP_ERR      KERN_ERR FUJLAPTOP_LOG
120 #define FUJLAPTOP_NOTICE   KERN_NOTICE FUJLAPTOP_LOG
121 #define FUJLAPTOP_INFO     KERN_INFO FUJLAPTOP_LOG
122 #define FUJLAPTOP_DEBUG    KERN_DEBUG FUJLAPTOP_LOG
123
124 #define FUJLAPTOP_DBG_ALL         0xffff
125 #define FUJLAPTOP_DBG_ERROR       0x0001
126 #define FUJLAPTOP_DBG_WARN        0x0002
127 #define FUJLAPTOP_DBG_INFO        0x0004
128 #define FUJLAPTOP_DBG_TRACE       0x0008
129
130 #define dbg_printk(a_dbg_level, format, arg...) \
131         do { if (dbg_level & a_dbg_level) \
132                 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
133         } while (0)
134 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
135 #define vdbg_printk(a_dbg_level, format, arg...) \
136         dbg_printk(a_dbg_level, format, ## arg)
137 #else
138 #define vdbg_printk(a_dbg_level, format, arg...)
139 #endif
140
141 /* Device controlling the backlight and associated keys */
142 struct fujitsu_t {
143         acpi_handle acpi_handle;
144         struct acpi_device *dev;
145         struct input_dev *input;
146         char phys[32];
147         struct backlight_device *bl_device;
148         struct platform_device *pf_device;
149         int keycode1, keycode2, keycode3, keycode4;
150
151         unsigned int max_brightness;
152         unsigned int brightness_changed;
153         unsigned int brightness_level;
154 };
155
156 static struct fujitsu_t *fujitsu;
157 static int use_alt_lcd_levels = -1;
158 static int disable_brightness_adjust = -1;
159
160 /* Device used to access other hotkeys on the laptop */
161 struct fujitsu_hotkey_t {
162         acpi_handle acpi_handle;
163         struct acpi_device *dev;
164         struct input_dev *input;
165         char phys[32];
166         struct platform_device *pf_device;
167         struct kfifo fifo;
168         spinlock_t fifo_lock;
169         int rfkill_supported;
170         int rfkill_state;
171         int logolamp_registered;
172         int kblamps_registered;
173 };
174
175 static struct fujitsu_hotkey_t *fujitsu_hotkey;
176
177 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
178
179 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
180 static enum led_brightness logolamp_get(struct led_classdev *cdev);
181 static void logolamp_set(struct led_classdev *cdev,
182                                enum led_brightness brightness);
183
184 struct led_classdev logolamp_led = {
185  .name = "fujitsu::logolamp",
186  .brightness_get = logolamp_get,
187  .brightness_set = logolamp_set
188 };
189
190 static enum led_brightness kblamps_get(struct led_classdev *cdev);
191 static void kblamps_set(struct led_classdev *cdev,
192                                enum led_brightness brightness);
193
194 struct led_classdev kblamps_led = {
195  .name = "fujitsu::kblamps",
196  .brightness_get = kblamps_get,
197  .brightness_set = kblamps_set
198 };
199 #endif
200
201 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
202 static u32 dbg_level = 0x03;
203 #endif
204
205 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
206
207 /* Fujitsu ACPI interface function */
208
209 static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
210 {
211         acpi_status status = AE_OK;
212         union acpi_object params[4] = {
213         { .type = ACPI_TYPE_INTEGER },
214         { .type = ACPI_TYPE_INTEGER },
215         { .type = ACPI_TYPE_INTEGER },
216         { .type = ACPI_TYPE_INTEGER }
217         };
218         struct acpi_object_list arg_list = { 4, &params[0] };
219         struct acpi_buffer output;
220         union acpi_object out_obj;
221         acpi_handle handle = NULL;
222
223         status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
224         if (ACPI_FAILURE(status)) {
225                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
226                                 "FUNC interface is not present\n");
227                 return -ENODEV;
228         }
229
230         params[0].integer.value = cmd;
231         params[1].integer.value = arg0;
232         params[2].integer.value = arg1;
233         params[3].integer.value = arg2;
234
235         output.length = sizeof(out_obj);
236         output.pointer = &out_obj;
237
238         status = acpi_evaluate_object(handle, NULL, &arg_list, &output);
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         if (out_obj.type != ACPI_TYPE_INTEGER) {
247                 vdbg_printk(FUJLAPTOP_DBG_WARN,
248                         "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) did not "
249                         "return an integer\n",
250                         cmd, arg0, arg1, arg2);
251                 return -ENODEV;
252         }
253
254         vdbg_printk(FUJLAPTOP_DBG_TRACE,
255                 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
256                         cmd, arg0, arg1, arg2, (int)out_obj.integer.value);
257         return out_obj.integer.value;
258 }
259
260 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
261 /* LED class callbacks */
262
263 static void logolamp_set(struct led_classdev *cdev,
264                                enum led_brightness brightness)
265 {
266         if (brightness >= LED_FULL) {
267                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
268                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
269         } else if (brightness >= LED_HALF) {
270                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
271                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
272         } else {
273                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
274         }
275 }
276
277 static void kblamps_set(struct led_classdev *cdev,
278                                enum led_brightness brightness)
279 {
280         if (brightness >= LED_FULL)
281                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
282         else
283                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
284 }
285
286 static enum led_brightness logolamp_get(struct led_classdev *cdev)
287 {
288         enum led_brightness brightness = LED_OFF;
289         int poweron, always;
290
291         poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
292         if (poweron == FUNC_LED_ON) {
293                 brightness = LED_HALF;
294                 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
295                 if (always == FUNC_LED_ON)
296                         brightness = LED_FULL;
297         }
298         return brightness;
299 }
300
301 static enum led_brightness kblamps_get(struct led_classdev *cdev)
302 {
303         enum led_brightness brightness = LED_OFF;
304
305         if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
306                 brightness = LED_FULL;
307
308         return brightness;
309 }
310 #endif
311
312 /* Hardware access for LCD brightness control */
313
314 static int set_lcd_level(int level)
315 {
316         acpi_status status = AE_OK;
317         union acpi_object arg0 = { ACPI_TYPE_INTEGER };
318         struct acpi_object_list arg_list = { 1, &arg0 };
319         acpi_handle handle = NULL;
320
321         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
322                     level);
323
324         if (level < 0 || level >= fujitsu->max_brightness)
325                 return -EINVAL;
326
327         status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
328         if (ACPI_FAILURE(status)) {
329                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
330                 return -ENODEV;
331         }
332
333         arg0.integer.value = level;
334
335         status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
336         if (ACPI_FAILURE(status))
337                 return -ENODEV;
338
339         return 0;
340 }
341
342 static int set_lcd_level_alt(int level)
343 {
344         acpi_status status = AE_OK;
345         union acpi_object arg0 = { ACPI_TYPE_INTEGER };
346         struct acpi_object_list arg_list = { 1, &arg0 };
347         acpi_handle handle = NULL;
348
349         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
350                     level);
351
352         if (level < 0 || level >= fujitsu->max_brightness)
353                 return -EINVAL;
354
355         status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
356         if (ACPI_FAILURE(status)) {
357                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
358                 return -ENODEV;
359         }
360
361         arg0.integer.value = level;
362
363         status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
364         if (ACPI_FAILURE(status))
365                 return -ENODEV;
366
367         return 0;
368 }
369
370 static int get_lcd_level(void)
371 {
372         unsigned long long state = 0;
373         acpi_status status = AE_OK;
374
375         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
376
377         status =
378             acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
379         if (status < 0)
380                 return status;
381
382         fujitsu->brightness_level = state & 0x0fffffff;
383
384         if (state & 0x80000000)
385                 fujitsu->brightness_changed = 1;
386         else
387                 fujitsu->brightness_changed = 0;
388
389         return fujitsu->brightness_level;
390 }
391
392 static int get_max_brightness(void)
393 {
394         unsigned long long state = 0;
395         acpi_status status = AE_OK;
396
397         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
398
399         status =
400             acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
401         if (status < 0)
402                 return status;
403
404         fujitsu->max_brightness = state;
405
406         return fujitsu->max_brightness;
407 }
408
409 /* Backlight device stuff */
410
411 static int bl_get_brightness(struct backlight_device *b)
412 {
413         return get_lcd_level();
414 }
415
416 static int bl_update_status(struct backlight_device *b)
417 {
418         int ret;
419         if (b->props.power == 4)
420                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
421         else
422                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
423         if (ret != 0)
424                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
425                         "Unable to adjust backlight power, error code %i\n",
426                         ret);
427
428         if (use_alt_lcd_levels)
429                 ret = set_lcd_level_alt(b->props.brightness);
430         else
431                 ret = set_lcd_level(b->props.brightness);
432         if (ret != 0)
433                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
434                         "Unable to adjust LCD brightness, error code %i\n",
435                         ret);
436         return ret;
437 }
438
439 static struct backlight_ops fujitsubl_ops = {
440         .get_brightness = bl_get_brightness,
441         .update_status = bl_update_status,
442 };
443
444 /* Platform LCD brightness device */
445
446 static ssize_t
447 show_max_brightness(struct device *dev,
448                     struct device_attribute *attr, char *buf)
449 {
450
451         int ret;
452
453         ret = get_max_brightness();
454         if (ret < 0)
455                 return ret;
456
457         return sprintf(buf, "%i\n", ret);
458 }
459
460 static ssize_t
461 show_brightness_changed(struct device *dev,
462                         struct device_attribute *attr, char *buf)
463 {
464
465         int ret;
466
467         ret = fujitsu->brightness_changed;
468         if (ret < 0)
469                 return ret;
470
471         return sprintf(buf, "%i\n", ret);
472 }
473
474 static ssize_t show_lcd_level(struct device *dev,
475                               struct device_attribute *attr, char *buf)
476 {
477
478         int ret;
479
480         ret = get_lcd_level();
481         if (ret < 0)
482                 return ret;
483
484         return sprintf(buf, "%i\n", ret);
485 }
486
487 static ssize_t store_lcd_level(struct device *dev,
488                                struct device_attribute *attr, const char *buf,
489                                size_t count)
490 {
491
492         int level, ret;
493
494         if (sscanf(buf, "%i", &level) != 1
495             || (level < 0 || level >= fujitsu->max_brightness))
496                 return -EINVAL;
497
498         if (use_alt_lcd_levels)
499                 ret = set_lcd_level_alt(level);
500         else
501                 ret = set_lcd_level(level);
502         if (ret < 0)
503                 return ret;
504
505         ret = get_lcd_level();
506         if (ret < 0)
507                 return ret;
508
509         return count;
510 }
511
512 static ssize_t
513 ignore_store(struct device *dev,
514              struct device_attribute *attr, const char *buf, size_t count)
515 {
516         return count;
517 }
518
519 static ssize_t
520 show_lid_state(struct device *dev,
521                         struct device_attribute *attr, char *buf)
522 {
523         if (!(fujitsu_hotkey->rfkill_supported & 0x100))
524                 return sprintf(buf, "unknown\n");
525         if (fujitsu_hotkey->rfkill_state & 0x100)
526                 return sprintf(buf, "open\n");
527         else
528                 return sprintf(buf, "closed\n");
529 }
530
531 static ssize_t
532 show_dock_state(struct device *dev,
533                         struct device_attribute *attr, char *buf)
534 {
535         if (!(fujitsu_hotkey->rfkill_supported & 0x200))
536                 return sprintf(buf, "unknown\n");
537         if (fujitsu_hotkey->rfkill_state & 0x200)
538                 return sprintf(buf, "docked\n");
539         else
540                 return sprintf(buf, "undocked\n");
541 }
542
543 static ssize_t
544 show_radios_state(struct device *dev,
545                         struct device_attribute *attr, char *buf)
546 {
547         if (!(fujitsu_hotkey->rfkill_supported & 0x20))
548                 return sprintf(buf, "unknown\n");
549         if (fujitsu_hotkey->rfkill_state & 0x20)
550                 return sprintf(buf, "on\n");
551         else
552                 return sprintf(buf, "killed\n");
553 }
554
555 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
556 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
557                    ignore_store);
558 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
559 static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
560 static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
561 static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
562
563 static struct attribute *fujitsupf_attributes[] = {
564         &dev_attr_brightness_changed.attr,
565         &dev_attr_max_brightness.attr,
566         &dev_attr_lcd_level.attr,
567         &dev_attr_lid.attr,
568         &dev_attr_dock.attr,
569         &dev_attr_radios.attr,
570         NULL
571 };
572
573 static struct attribute_group fujitsupf_attribute_group = {
574         .attrs = fujitsupf_attributes
575 };
576
577 static struct platform_driver fujitsupf_driver = {
578         .driver = {
579                    .name = "fujitsu-laptop",
580                    .owner = THIS_MODULE,
581                    }
582 };
583
584 static void dmi_check_cb_common(const struct dmi_system_id *id)
585 {
586         acpi_handle handle;
587         printk(KERN_INFO "fujitsu-laptop: Identified laptop model '%s'.\n",
588                id->ident);
589         if (use_alt_lcd_levels == -1) {
590                 if (ACPI_SUCCESS(acpi_get_handle(NULL,
591                                 "\\_SB.PCI0.LPCB.FJEX.SBL2", &handle)))
592                         use_alt_lcd_levels = 1;
593                 else
594                         use_alt_lcd_levels = 0;
595                 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
596                         "%i\n", use_alt_lcd_levels);
597         }
598 }
599
600 static int dmi_check_cb_s6410(const struct dmi_system_id *id)
601 {
602         dmi_check_cb_common(id);
603         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
604         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
605         return 0;
606 }
607
608 static int dmi_check_cb_s6420(const struct dmi_system_id *id)
609 {
610         dmi_check_cb_common(id);
611         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
612         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
613         return 0;
614 }
615
616 static int dmi_check_cb_p8010(const struct dmi_system_id *id)
617 {
618         dmi_check_cb_common(id);
619         fujitsu->keycode1 = KEY_HELP;   /* "Support" */
620         fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
621         fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
622         return 0;
623 }
624
625 static struct dmi_system_id fujitsu_dmi_table[] = {
626         {
627          .ident = "Fujitsu Siemens S6410",
628          .matches = {
629                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
630                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
631                      },
632          .callback = dmi_check_cb_s6410},
633         {
634          .ident = "Fujitsu Siemens S6420",
635          .matches = {
636                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
637                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
638                      },
639          .callback = dmi_check_cb_s6420},
640         {
641          .ident = "Fujitsu LifeBook P8010",
642          .matches = {
643                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
644                      DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
645                      },
646          .callback = dmi_check_cb_p8010},
647         {}
648 };
649
650 /* ACPI device for LCD brightness control */
651
652 static int acpi_fujitsu_add(struct acpi_device *device)
653 {
654         acpi_handle handle;
655         int result = 0;
656         int state = 0;
657         struct input_dev *input;
658         int error;
659
660         if (!device)
661                 return -EINVAL;
662
663         fujitsu->acpi_handle = device->handle;
664         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
665         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
666         device->driver_data = fujitsu;
667
668         fujitsu->input = input = input_allocate_device();
669         if (!input) {
670                 error = -ENOMEM;
671                 goto err_stop;
672         }
673
674         snprintf(fujitsu->phys, sizeof(fujitsu->phys),
675                  "%s/video/input0", acpi_device_hid(device));
676
677         input->name = acpi_device_name(device);
678         input->phys = fujitsu->phys;
679         input->id.bustype = BUS_HOST;
680         input->id.product = 0x06;
681         input->dev.parent = &device->dev;
682         input->evbit[0] = BIT(EV_KEY);
683         set_bit(KEY_BRIGHTNESSUP, input->keybit);
684         set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
685         set_bit(KEY_UNKNOWN, input->keybit);
686
687         error = input_register_device(input);
688         if (error)
689                 goto err_free_input_dev;
690
691         result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
692         if (result) {
693                 printk(KERN_ERR "Error reading power state\n");
694                 goto err_unregister_input_dev;
695         }
696
697         printk(KERN_INFO "ACPI: %s [%s] (%s)\n",
698                acpi_device_name(device), acpi_device_bid(device),
699                !device->power.state ? "on" : "off");
700
701         fujitsu->dev = device;
702
703         if (ACPI_SUCCESS
704             (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
705                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
706                 if (ACPI_FAILURE
707                     (acpi_evaluate_object
708                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
709                         printk(KERN_ERR "_INI Method failed\n");
710         }
711
712         /* do config (detect defaults) */
713         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
714         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
715         vdbg_printk(FUJLAPTOP_DBG_INFO,
716                     "config: [alt interface: %d], [adjust disable: %d]\n",
717                     use_alt_lcd_levels, disable_brightness_adjust);
718
719         if (get_max_brightness() <= 0)
720                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
721         get_lcd_level();
722
723         return result;
724
725 err_unregister_input_dev:
726         input_unregister_device(input);
727 err_free_input_dev:
728         input_free_device(input);
729 err_stop:
730         return result;
731 }
732
733 static int acpi_fujitsu_remove(struct acpi_device *device, int type)
734 {
735         struct fujitsu_t *fujitsu = acpi_driver_data(device);
736         struct input_dev *input = fujitsu->input;
737
738         input_unregister_device(input);
739
740         input_free_device(input);
741
742         fujitsu->acpi_handle = NULL;
743
744         return 0;
745 }
746
747 /* Brightness notify */
748
749 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
750 {
751         struct input_dev *input;
752         int keycode;
753         int oldb, newb;
754
755         input = fujitsu->input;
756
757         switch (event) {
758         case ACPI_FUJITSU_NOTIFY_CODE1:
759                 keycode = 0;
760                 oldb = fujitsu->brightness_level;
761                 get_lcd_level();
762                 newb = fujitsu->brightness_level;
763
764                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
765                             "brightness button event [%i -> %i (%i)]\n",
766                             oldb, newb, fujitsu->brightness_changed);
767
768                 if (oldb < newb) {
769                         if (disable_brightness_adjust != 1) {
770                                 if (use_alt_lcd_levels)
771                                         set_lcd_level_alt(newb);
772                                 else
773                                         set_lcd_level(newb);
774                         }
775                         acpi_bus_generate_proc_event(fujitsu->dev,
776                                 ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
777                         keycode = KEY_BRIGHTNESSUP;
778                 } else if (oldb > newb) {
779                         if (disable_brightness_adjust != 1) {
780                                 if (use_alt_lcd_levels)
781                                         set_lcd_level_alt(newb);
782                                 else
783                                         set_lcd_level(newb);
784                         }
785                         acpi_bus_generate_proc_event(fujitsu->dev,
786                                 ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
787                         keycode = KEY_BRIGHTNESSDOWN;
788                 }
789                 break;
790         default:
791                 keycode = KEY_UNKNOWN;
792                 vdbg_printk(FUJLAPTOP_DBG_WARN,
793                             "unsupported event [0x%x]\n", event);
794                 break;
795         }
796
797         if (keycode != 0) {
798                 input_report_key(input, keycode, 1);
799                 input_sync(input);
800                 input_report_key(input, keycode, 0);
801                 input_sync(input);
802         }
803 }
804
805 /* ACPI device for hotkey handling */
806
807 static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
808 {
809         acpi_handle handle;
810         int result = 0;
811         int state = 0;
812         struct input_dev *input;
813         int error;
814         int i;
815
816         if (!device)
817                 return -EINVAL;
818
819         fujitsu_hotkey->acpi_handle = device->handle;
820         sprintf(acpi_device_name(device), "%s",
821                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
822         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
823         device->driver_data = fujitsu_hotkey;
824
825         /* kfifo */
826         spin_lock_init(&fujitsu_hotkey->fifo_lock);
827         error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
828                         GFP_KERNEL, &fujitsu_hotkey->fifo_lock);
829         if (error) {
830                 printk(KERN_ERR "kfifo_alloc failed\n");
831                 goto err_stop;
832         }
833
834         fujitsu_hotkey->input = input = input_allocate_device();
835         if (!input) {
836                 error = -ENOMEM;
837                 goto err_free_fifo;
838         }
839
840         snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
841                  "%s/video/input0", acpi_device_hid(device));
842
843         input->name = acpi_device_name(device);
844         input->phys = fujitsu_hotkey->phys;
845         input->id.bustype = BUS_HOST;
846         input->id.product = 0x06;
847         input->dev.parent = &device->dev;
848
849         set_bit(EV_KEY, input->evbit);
850         set_bit(fujitsu->keycode1, input->keybit);
851         set_bit(fujitsu->keycode2, input->keybit);
852         set_bit(fujitsu->keycode3, input->keybit);
853         set_bit(fujitsu->keycode4, input->keybit);
854         set_bit(KEY_UNKNOWN, input->keybit);
855
856         error = input_register_device(input);
857         if (error)
858                 goto err_free_input_dev;
859
860         result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
861         if (result) {
862                 printk(KERN_ERR "Error reading power state\n");
863                 goto err_unregister_input_dev;
864         }
865
866         printk(KERN_INFO "ACPI: %s [%s] (%s)\n",
867                acpi_device_name(device), acpi_device_bid(device),
868                !device->power.state ? "on" : "off");
869
870         fujitsu_hotkey->dev = device;
871
872         if (ACPI_SUCCESS
873             (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
874                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
875                 if (ACPI_FAILURE
876                     (acpi_evaluate_object
877                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
878                         printk(KERN_ERR "_INI Method failed\n");
879         }
880
881         i = 0;
882         while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
883                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
884                 ; /* No action, result is discarded */
885         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
886
887         fujitsu_hotkey->rfkill_supported =
888                 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
889
890         /* Make sure our bitmask of supported functions is cleared if the
891            RFKILL function block is not implemented, like on the S7020. */
892         if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
893                 fujitsu_hotkey->rfkill_supported = 0;
894
895         if (fujitsu_hotkey->rfkill_supported)
896                 fujitsu_hotkey->rfkill_state =
897                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
898
899         /* Suspect this is a keymap of the application panel, print it */
900         printk(KERN_INFO "fujitsu-laptop: BTNI: [0x%x]\n",
901                 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                         printk(KERN_ERR "fujitsu-laptop: Could not register "
911                         "LED handler for logo lamp, error %i\n", 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                         printk(KERN_ERR "fujitsu-laptop: Could not register "
923                         "LED handler for keyboard lamps, error %i\n", result);
924                 }
925         }
926 #endif
927
928         return result;
929
930 err_unregister_input_dev:
931         input_unregister_device(input);
932 err_free_input_dev:
933         input_free_device(input);
934 err_free_fifo:
935         kfifo_free(&fujitsu_hotkey->fifo);
936 err_stop:
937         return result;
938 }
939
940 static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
941 {
942         struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
943         struct input_dev *input = fujitsu_hotkey->input;
944
945 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
946         if (fujitsu_hotkey->logolamp_registered)
947                 led_classdev_unregister(&logolamp_led);
948
949         if (fujitsu_hotkey->kblamps_registered)
950                 led_classdev_unregister(&kblamps_led);
951 #endif
952
953         input_unregister_device(input);
954
955         input_free_device(input);
956
957         kfifo_free(&fujitsu_hotkey->fifo);
958
959         fujitsu_hotkey->acpi_handle = NULL;
960
961         return 0;
962 }
963
964 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
965 {
966         struct input_dev *input;
967         int keycode, keycode_r;
968         unsigned int irb = 1;
969         int i, status;
970
971         input = fujitsu_hotkey->input;
972
973         if (fujitsu_hotkey->rfkill_supported)
974                 fujitsu_hotkey->rfkill_state =
975                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
976
977         switch (event) {
978         case ACPI_FUJITSU_NOTIFY_CODE1:
979                 i = 0;
980                 while ((irb =
981                         call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
982                                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
983                         switch (irb & 0x4ff) {
984                         case KEY1_CODE:
985                                 keycode = fujitsu->keycode1;
986                                 break;
987                         case KEY2_CODE:
988                                 keycode = fujitsu->keycode2;
989                                 break;
990                         case KEY3_CODE:
991                                 keycode = fujitsu->keycode3;
992                                 break;
993                         case KEY4_CODE:
994                                 keycode = fujitsu->keycode4;
995                                 break;
996                         case 0:
997                                 keycode = 0;
998                                 break;
999                         default:
1000                                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1001                                             "Unknown GIRB result [%x]\n", irb);
1002                                 keycode = -1;
1003                                 break;
1004                         }
1005                         if (keycode > 0) {
1006                                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1007                                         "Push keycode into ringbuffer [%d]\n",
1008                                         keycode);
1009                                 status = kfifo_put(&fujitsu_hotkey->fifo,
1010                                                    (unsigned char *)&keycode,
1011                                                    sizeof(keycode));
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_get
1023                                         (&fujitsu_hotkey->fifo, (unsigned char *)
1024                                          &keycode_r,
1025                                          sizeof
1026                                          (keycode_r))) == sizeof(keycode_r)) {
1027                                         input_report_key(input, keycode_r, 0);
1028                                         input_sync(input);
1029                                         vdbg_printk(FUJLAPTOP_DBG_TRACE,
1030                                           "Pop keycode from ringbuffer [%d]\n",
1031                                           keycode_r);
1032                                 }
1033                         }
1034                 }
1035
1036                 break;
1037         default:
1038                 keycode = KEY_UNKNOWN;
1039                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1040                             "Unsupported event [0x%x]\n", event);
1041                 input_report_key(input, keycode, 1);
1042                 input_sync(input);
1043                 input_report_key(input, keycode, 0);
1044                 input_sync(input);
1045                 break;
1046         }
1047 }
1048
1049 /* Initialization */
1050
1051 static const struct acpi_device_id fujitsu_device_ids[] = {
1052         {ACPI_FUJITSU_HID, 0},
1053         {"", 0},
1054 };
1055
1056 static struct acpi_driver acpi_fujitsu_driver = {
1057         .name = ACPI_FUJITSU_DRIVER_NAME,
1058         .class = ACPI_FUJITSU_CLASS,
1059         .ids = fujitsu_device_ids,
1060         .ops = {
1061                 .add = acpi_fujitsu_add,
1062                 .remove = acpi_fujitsu_remove,
1063                 .notify = acpi_fujitsu_notify,
1064                 },
1065 };
1066
1067 static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1068         {ACPI_FUJITSU_HOTKEY_HID, 0},
1069         {"", 0},
1070 };
1071
1072 static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1073         .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1074         .class = ACPI_FUJITSU_CLASS,
1075         .ids = fujitsu_hotkey_device_ids,
1076         .ops = {
1077                 .add = acpi_fujitsu_hotkey_add,
1078                 .remove = acpi_fujitsu_hotkey_remove,
1079                 .notify = acpi_fujitsu_hotkey_notify,
1080                 },
1081 };
1082
1083 static int __init fujitsu_init(void)
1084 {
1085         int ret, result, max_brightness;
1086
1087         if (acpi_disabled)
1088                 return -ENODEV;
1089
1090         fujitsu = kmalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1091         if (!fujitsu)
1092                 return -ENOMEM;
1093         memset(fujitsu, 0, sizeof(struct fujitsu_t));
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                 fujitsu->bl_device =
1128                         backlight_device_register("fujitsu-laptop", NULL, NULL,
1129                                                   &fujitsubl_ops);
1130                 if (IS_ERR(fujitsu->bl_device)) {
1131                         ret = PTR_ERR(fujitsu->bl_device);
1132                         fujitsu->bl_device = NULL;
1133                         goto fail_sysfs_group;
1134                 }
1135                 max_brightness = fujitsu->max_brightness;
1136                 fujitsu->bl_device->props.max_brightness = max_brightness - 1;
1137                 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1138         }
1139
1140         ret = platform_driver_register(&fujitsupf_driver);
1141         if (ret)
1142                 goto fail_backlight;
1143
1144         /* Register hotkey driver */
1145
1146         fujitsu_hotkey = kmalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1147         if (!fujitsu_hotkey) {
1148                 ret = -ENOMEM;
1149                 goto fail_hotkey;
1150         }
1151         memset(fujitsu_hotkey, 0, sizeof(struct fujitsu_hotkey_t));
1152
1153         result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1154         if (result < 0) {
1155                 ret = -ENODEV;
1156                 goto fail_hotkey1;
1157         }
1158
1159         /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1160
1161         if (!acpi_video_backlight_support()) {
1162                 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1163                         fujitsu->bl_device->props.power = 4;
1164                 else
1165                         fujitsu->bl_device->props.power = 0;
1166         }
1167
1168         printk(KERN_INFO "fujitsu-laptop: driver " FUJITSU_DRIVER_VERSION
1169                " successfully loaded.\n");
1170
1171         return 0;
1172
1173 fail_hotkey1:
1174         kfree(fujitsu_hotkey);
1175 fail_hotkey:
1176         platform_driver_unregister(&fujitsupf_driver);
1177 fail_backlight:
1178         if (fujitsu->bl_device)
1179                 backlight_device_unregister(fujitsu->bl_device);
1180 fail_sysfs_group:
1181         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1182                            &fujitsupf_attribute_group);
1183 fail_platform_device2:
1184         platform_device_del(fujitsu->pf_device);
1185 fail_platform_device1:
1186         platform_device_put(fujitsu->pf_device);
1187 fail_platform_driver:
1188         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1189 fail_acpi:
1190         kfree(fujitsu);
1191
1192         return ret;
1193 }
1194
1195 static void __exit fujitsu_cleanup(void)
1196 {
1197         acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1198
1199         kfree(fujitsu_hotkey);
1200
1201         platform_driver_unregister(&fujitsupf_driver);
1202
1203         if (fujitsu->bl_device)
1204                 backlight_device_unregister(fujitsu->bl_device);
1205
1206         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1207                            &fujitsupf_attribute_group);
1208
1209         platform_device_unregister(fujitsu->pf_device);
1210
1211         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1212
1213         kfree(fujitsu);
1214
1215         printk(KERN_INFO "fujitsu-laptop: driver unloaded.\n");
1216 }
1217
1218 module_init(fujitsu_init);
1219 module_exit(fujitsu_cleanup);
1220
1221 module_param(use_alt_lcd_levels, uint, 0644);
1222 MODULE_PARM_DESC(use_alt_lcd_levels,
1223                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1224 module_param(disable_brightness_adjust, uint, 0644);
1225 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1226 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1227 module_param_named(debug, dbg_level, uint, 0644);
1228 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1229 #endif
1230
1231 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1232 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1233 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1234 MODULE_LICENSE("GPL");
1235
1236 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1237 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1238 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1239
1240 static struct pnp_device_id pnp_ids[] = {
1241         {.id = "FUJ02bf"},
1242         {.id = "FUJ02B1"},
1243         {.id = "FUJ02E3"},
1244         {.id = ""}
1245 };
1246
1247 MODULE_DEVICE_TABLE(pnp, pnp_ids);