Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/platform/x86/fujitsu-laptop.c

  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/input.h>
 68 #include <linux/kfifo.h>
 69 #include <linux/platform_device.h>
 70 #include <linux/slab.h>
 71 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
 72 #include <linux/leds.h>
 73 #endif
 74 
 75 #define FUJITSU_DRIVER_VERSION "0.6.0"
 76 
 77 #define FUJITSU_LCD_N_LEVELS 8
 78 
 79 #define ACPI_FUJITSU_CLASS              "fujitsu"
 80 #define ACPI_FUJITSU_HID                "FUJ02B1"
 81 #define ACPI_FUJITSU_DRIVER_NAME        "Fujitsu laptop FUJ02B1 ACPI brightness driver"
 82 #define ACPI_FUJITSU_DEVICE_NAME        "Fujitsu FUJ02B1"
 83 #define ACPI_FUJITSU_HOTKEY_HID         "FUJ02E3"
 84 #define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
 85 #define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
 86 
 87 #define ACPI_FUJITSU_NOTIFY_CODE1     0x80
 88 
 89 #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS     0x86
 90 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
 91 
 92 /* FUNC interface - command values */
 93 #define FUNC_RFKILL     0x1000
 94 #define FUNC_LEDS       0x1001
 95 #define FUNC_BUTTONS    0x1002
 96 #define FUNC_BACKLIGHT  0x1004
 97 
 98 /* FUNC interface - responses */
 99 #define UNSUPPORTED_CMD 0x80000000
100 
101 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
102 /* FUNC interface - LED control */
103 #define FUNC_LED_OFF    0x1
104 #define FUNC_LED_ON     0x30001
105 #define KEYBOARD_LAMPS  0x100
106 #define LOGOLAMP_POWERON 0x2000
107 #define LOGOLAMP_ALWAYS  0x4000
108 #endif
109 
110 /* Hotkey details */
111 #define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
112 #define KEY2_CODE       0x411
113 #define KEY3_CODE       0x412
114 #define KEY4_CODE       0x413
115 
116 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
117 #define RINGBUFFERSIZE 40
118 
119 /* Debugging */
120 #define FUJLAPTOP_LOG      ACPI_FUJITSU_HID ": "
121 #define FUJLAPTOP_ERR      KERN_ERR FUJLAPTOP_LOG
122 #define FUJLAPTOP_NOTICE   KERN_NOTICE FUJLAPTOP_LOG
123 #define FUJLAPTOP_INFO     KERN_INFO FUJLAPTOP_LOG
124 #define FUJLAPTOP_DEBUG    KERN_DEBUG FUJLAPTOP_LOG
125 
126 #define FUJLAPTOP_DBG_ALL         0xffff
127 #define FUJLAPTOP_DBG_ERROR       0x0001
128 #define FUJLAPTOP_DBG_WARN        0x0002
129 #define FUJLAPTOP_DBG_INFO        0x0004
130 #define FUJLAPTOP_DBG_TRACE       0x0008
131 
132 #define dbg_printk(a_dbg_level, format, arg...) \
133         do { if (dbg_level & a_dbg_level) \
134                 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
135         } while (0)
136 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
137 #define vdbg_printk(a_dbg_level, format, arg...) \
138         dbg_printk(a_dbg_level, format, ## arg)
139 #else
140 #define vdbg_printk(a_dbg_level, format, arg...)
141 #endif
142 
143 /* Device controlling the backlight and associated keys */
144 struct fujitsu_t {
145         acpi_handle acpi_handle;
146         struct acpi_device *dev;
147         struct input_dev *input;
148         char phys[32];
149         struct backlight_device *bl_device;
150         struct platform_device *pf_device;
151         int keycode1, keycode2, keycode3, keycode4;
152 
153         unsigned int max_brightness;
154         unsigned int brightness_changed;
155         unsigned int brightness_level;
156 };
157 
158 static struct fujitsu_t *fujitsu;
159 static int use_alt_lcd_levels = -1;
160 static int disable_brightness_adjust = -1;
161 
162 /* Device used to access other hotkeys on the laptop */
163 struct fujitsu_hotkey_t {
164         acpi_handle acpi_handle;
165         struct acpi_device *dev;
166         struct input_dev *input;
167         char phys[32];
168         struct platform_device *pf_device;
169         struct kfifo fifo;
170         spinlock_t fifo_lock;
171         int rfkill_supported;
172         int rfkill_state;
173         int logolamp_registered;
174         int kblamps_registered;
175 };
176 
177 static struct fujitsu_hotkey_t *fujitsu_hotkey;
178 
179 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
180 
181 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
182 static enum led_brightness logolamp_get(struct led_classdev *cdev);
183 static void logolamp_set(struct led_classdev *cdev,
184                                enum led_brightness brightness);
185 
186 static struct led_classdev logolamp_led = {
187  .name = "fujitsu::logolamp",
188  .brightness_get = logolamp_get,
189  .brightness_set = logolamp_set
190 };
191 
192 static enum led_brightness kblamps_get(struct led_classdev *cdev);
193 static void kblamps_set(struct led_classdev *cdev,
194                                enum led_brightness brightness);
195 
196 static struct led_classdev kblamps_led = {
197  .name = "fujitsu::kblamps",
198  .brightness_get = kblamps_get,
199  .brightness_set = kblamps_set
200 };
201 #endif
202 
203 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
204 static u32 dbg_level = 0x03;
205 #endif
206 
207 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
208 
209 /* Fujitsu ACPI interface function */
210 
211 static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
212 {
213         acpi_status status = AE_OK;
214         union acpi_object params[4] = {
215         { .type = ACPI_TYPE_INTEGER },
216         { .type = ACPI_TYPE_INTEGER },
217         { .type = ACPI_TYPE_INTEGER },
218         { .type = ACPI_TYPE_INTEGER }
219         };
220         struct acpi_object_list arg_list = { 4, &params[0] };
221         unsigned long long value;
222         acpi_handle handle = NULL;
223 
224         status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
225         if (ACPI_FAILURE(status)) {
226                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
227                                 "FUNC interface is not present\n");
228                 return -ENODEV;
229         }
230 
231         params[0].integer.value = cmd;
232         params[1].integer.value = arg0;
233         params[2].integer.value = arg1;
234         params[3].integer.value = arg2;
235 
236         status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
237         if (ACPI_FAILURE(status)) {
238                 vdbg_printk(FUJLAPTOP_DBG_WARN,
239                         "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
240                                 cmd, arg0, arg1, arg2);
241                 return -ENODEV;
242         }
243 
244         vdbg_printk(FUJLAPTOP_DBG_TRACE,
245                 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
246                         cmd, arg0, arg1, arg2, (int)value);
247         return value;
248 }
249 
250 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
251 /* LED class callbacks */
252 
253 static void logolamp_set(struct led_classdev *cdev,
254                                enum led_brightness brightness)
255 {
256         if (brightness >= LED_FULL) {
257                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
258                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
259         } else if (brightness >= LED_HALF) {
260                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
261                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
262         } else {
263                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
264         }
265 }
266 
267 static void kblamps_set(struct led_classdev *cdev,
268                                enum led_brightness brightness)
269 {
270         if (brightness >= LED_FULL)
271                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
272         else
273                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
274 }
275 
276 static enum led_brightness logolamp_get(struct led_classdev *cdev)
277 {
278         enum led_brightness brightness = LED_OFF;
279         int poweron, always;
280 
281         poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
282         if (poweron == FUNC_LED_ON) {
283                 brightness = LED_HALF;
284                 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
285                 if (always == FUNC_LED_ON)
286                         brightness = LED_FULL;
287         }
288         return brightness;
289 }
290 
291 static enum led_brightness kblamps_get(struct led_classdev *cdev)
292 {
293         enum led_brightness brightness = LED_OFF;
294 
295         if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
296                 brightness = LED_FULL;
297 
298         return brightness;
299 }
300 #endif
301 
302 /* Hardware access for LCD brightness control */
303 
304 static int set_lcd_level(int level)
305 {
306         acpi_status status = AE_OK;
307         acpi_handle handle = NULL;
308 
309         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
310                     level);
311 
312         if (level < 0 || level >= fujitsu->max_brightness)
313                 return -EINVAL;
314 
315         status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
316         if (ACPI_FAILURE(status)) {
317                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
318                 return -ENODEV;
319         }
320 
321 
322         status = acpi_execute_simple_method(handle, NULL, level);
323         if (ACPI_FAILURE(status))
324                 return -ENODEV;
325 
326         return 0;
327 }
328 
329 static int set_lcd_level_alt(int level)
330 {
331         acpi_status status = AE_OK;
332         acpi_handle handle = NULL;
333 
334         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
335                     level);
336 
337         if (level < 0 || level >= fujitsu->max_brightness)
338                 return -EINVAL;
339 
340         status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
341         if (ACPI_FAILURE(status)) {
342                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
343                 return -ENODEV;
344         }
345 
346         status = acpi_execute_simple_method(handle, NULL, level);
347         if (ACPI_FAILURE(status))
348                 return -ENODEV;
349 
350         return 0;
351 }
352 
353 static int get_lcd_level(void)
354 {
355         unsigned long long state = 0;
356         acpi_status status = AE_OK;
357 
358         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
359 
360         status =
361             acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
362         if (ACPI_FAILURE(status))
363                 return 0;
364 
365         fujitsu->brightness_level = state & 0x0fffffff;
366 
367         if (state & 0x80000000)
368                 fujitsu->brightness_changed = 1;
369         else
370                 fujitsu->brightness_changed = 0;
371 
372         return fujitsu->brightness_level;
373 }
374 
375 static int get_max_brightness(void)
376 {
377         unsigned long long state = 0;
378         acpi_status status = AE_OK;
379 
380         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
381 
382         status =
383             acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
384         if (ACPI_FAILURE(status))
385                 return -1;
386 
387         fujitsu->max_brightness = state;
388 
389         return fujitsu->max_brightness;
390 }
391 
392 /* Backlight device stuff */
393 
394 static int bl_get_brightness(struct backlight_device *b)
395 {
396         return get_lcd_level();
397 }
398 
399 static int bl_update_status(struct backlight_device *b)
400 {
401         int ret;
402         if (b->props.power == 4)
403                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
404         else
405                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
406         if (ret != 0)
407                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
408                         "Unable to adjust backlight power, error code %i\n",
409                         ret);
410 
411         if (use_alt_lcd_levels)
412                 ret = set_lcd_level_alt(b->props.brightness);
413         else
414                 ret = set_lcd_level(b->props.brightness);
415         if (ret != 0)
416                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
417                         "Unable to adjust LCD brightness, error code %i\n",
418                         ret);
419         return ret;
420 }
421 
422 static const struct backlight_ops fujitsubl_ops = {
423         .get_brightness = bl_get_brightness,
424         .update_status = bl_update_status,
425 };
426 
427 /* Platform LCD brightness device */
428 
429 static ssize_t
430 show_max_brightness(struct device *dev,
431                     struct device_attribute *attr, char *buf)
432 {
433 
434         int ret;
435 
436         ret = get_max_brightness();
437         if (ret < 0)
438                 return ret;
439 
440         return sprintf(buf, "%i\n", ret);
441 }
442 
443 static ssize_t
444 show_brightness_changed(struct device *dev,
445                         struct device_attribute *attr, char *buf)
446 {
447 
448         int ret;
449 
450         ret = fujitsu->brightness_changed;
451         if (ret < 0)
452                 return ret;
453 
454         return sprintf(buf, "%i\n", ret);
455 }
456 
457 static ssize_t show_lcd_level(struct device *dev,
458                               struct device_attribute *attr, char *buf)
459 {
460 
461         int ret;
462 
463         ret = get_lcd_level();
464         if (ret < 0)
465                 return ret;
466 
467         return sprintf(buf, "%i\n", ret);
468 }
469 
470 static ssize_t store_lcd_level(struct device *dev,
471                                struct device_attribute *attr, const char *buf,
472                                size_t count)
473 {
474 
475         int level, ret;
476 
477         if (sscanf(buf, "%i", &level) != 1
478             || (level < 0 || level >= fujitsu->max_brightness))
479                 return -EINVAL;
480 
481         if (use_alt_lcd_levels)
482                 ret = set_lcd_level_alt(level);
483         else
484                 ret = set_lcd_level(level);
485         if (ret < 0)
486                 return ret;
487 
488         ret = get_lcd_level();
489         if (ret < 0)
490                 return ret;
491 
492         return count;
493 }
494 
495 static ssize_t
496 ignore_store(struct device *dev,
497              struct device_attribute *attr, const char *buf, size_t count)
498 {
499         return count;
500 }
501 
502 static ssize_t
503 show_lid_state(struct device *dev,
504                         struct device_attribute *attr, char *buf)
505 {
506         if (!(fujitsu_hotkey->rfkill_supported & 0x100))
507                 return sprintf(buf, "unknown\n");
508         if (fujitsu_hotkey->rfkill_state & 0x100)
509                 return sprintf(buf, "open\n");
510         else
511                 return sprintf(buf, "closed\n");
512 }
513 
514 static ssize_t
515 show_dock_state(struct device *dev,
516                         struct device_attribute *attr, char *buf)
517 {
518         if (!(fujitsu_hotkey->rfkill_supported & 0x200))
519                 return sprintf(buf, "unknown\n");
520         if (fujitsu_hotkey->rfkill_state & 0x200)
521                 return sprintf(buf, "docked\n");
522         else
523                 return sprintf(buf, "undocked\n");
524 }
525 
526 static ssize_t
527 show_radios_state(struct device *dev,
528                         struct device_attribute *attr, char *buf)
529 {
530         if (!(fujitsu_hotkey->rfkill_supported & 0x20))
531                 return sprintf(buf, "unknown\n");
532         if (fujitsu_hotkey->rfkill_state & 0x20)
533                 return sprintf(buf, "on\n");
534         else
535                 return sprintf(buf, "killed\n");
536 }
537 
538 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
539 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
540                    ignore_store);
541 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
542 static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
543 static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
544 static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
545 
546 static struct attribute *fujitsupf_attributes[] = {
547         &dev_attr_brightness_changed.attr,
548         &dev_attr_max_brightness.attr,
549         &dev_attr_lcd_level.attr,
550         &dev_attr_lid.attr,
551         &dev_attr_dock.attr,
552         &dev_attr_radios.attr,
553         NULL
554 };
555 
556 static struct attribute_group fujitsupf_attribute_group = {
557         .attrs = fujitsupf_attributes
558 };
559 
560 static struct platform_driver fujitsupf_driver = {
561         .driver = {
562                    .name = "fujitsu-laptop",
563                    .owner = THIS_MODULE,
564                    }
565 };
566 
567 static void dmi_check_cb_common(const struct dmi_system_id *id)
568 {
569         pr_info("Identified laptop model '%s'\n", id->ident);
570         if (use_alt_lcd_levels == -1) {
571                 if (acpi_has_method(NULL,
572                                 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
573                         use_alt_lcd_levels = 1;
574                 else
575                         use_alt_lcd_levels = 0;
576                 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
577                         "%i\n", use_alt_lcd_levels);
578         }
579 }
580 
581 static int dmi_check_cb_s6410(const struct dmi_system_id *id)
582 {
583         dmi_check_cb_common(id);
584         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
585         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
586         return 1;
587 }
588 
589 static int dmi_check_cb_s6420(const struct dmi_system_id *id)
590 {
591         dmi_check_cb_common(id);
592         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
593         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
594         return 1;
595 }
596 
597 static int dmi_check_cb_p8010(const struct dmi_system_id *id)
598 {
599         dmi_check_cb_common(id);
600         fujitsu->keycode1 = KEY_HELP;   /* "Support" */
601         fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
602         fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
603         return 1;
604 }
605 
606 static struct dmi_system_id fujitsu_dmi_table[] = {
607         {
608          .ident = "Fujitsu Siemens S6410",
609          .matches = {
610                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
611                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
612                      },
613          .callback = dmi_check_cb_s6410},
614         {
615          .ident = "Fujitsu Siemens S6420",
616          .matches = {
617                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
618                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
619                      },
620          .callback = dmi_check_cb_s6420},
621         {
622          .ident = "Fujitsu LifeBook P8010",
623          .matches = {
624                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
625                      DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
626                      },
627          .callback = dmi_check_cb_p8010},
628         {}
629 };
630 
631 /* ACPI device for LCD brightness control */
632 
633 static int acpi_fujitsu_add(struct acpi_device *device)
634 {
635         int state = 0;
636         struct input_dev *input;
637         int error;
638 
639         if (!device)
640                 return -EINVAL;
641 
642         fujitsu->acpi_handle = device->handle;
643         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
644         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
645         device->driver_data = fujitsu;
646 
647         fujitsu->input = input = input_allocate_device();
648         if (!input) {
649                 error = -ENOMEM;
650                 goto err_stop;
651         }
652 
653         snprintf(fujitsu->phys, sizeof(fujitsu->phys),
654                  "%s/video/input0", acpi_device_hid(device));
655 
656         input->name = acpi_device_name(device);
657         input->phys = fujitsu->phys;
658         input->id.bustype = BUS_HOST;
659         input->id.product = 0x06;
660         input->dev.parent = &device->dev;
661         input->evbit[0] = BIT(EV_KEY);
662         set_bit(KEY_BRIGHTNESSUP, input->keybit);
663         set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
664         set_bit(KEY_UNKNOWN, input->keybit);
665 
666         error = input_register_device(input);
667         if (error)
668                 goto err_free_input_dev;
669 
670         error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
671         if (error) {
672                 pr_err("Error reading power state\n");
673                 goto err_unregister_input_dev;
674         }
675 
676         pr_info("ACPI: %s [%s] (%s)\n",
677                acpi_device_name(device), acpi_device_bid(device),
678                !device->power.state ? "on" : "off");
679 
680         fujitsu->dev = device;
681 
682         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
683                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
684                 if (ACPI_FAILURE
685                     (acpi_evaluate_object
686                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
687                         pr_err("_INI Method failed\n");
688         }
689 
690         /* do config (detect defaults) */
691         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
692         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
693         vdbg_printk(FUJLAPTOP_DBG_INFO,
694                     "config: [alt interface: %d], [adjust disable: %d]\n",
695                     use_alt_lcd_levels, disable_brightness_adjust);
696 
697         if (get_max_brightness() <= 0)
698                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
699         get_lcd_level();
700 
701         return 0;
702 
703 err_unregister_input_dev:
704         input_unregister_device(input);
705         input = NULL;
706 err_free_input_dev:
707         input_free_device(input);
708 err_stop:
709         return error;
710 }
711 
712 static int acpi_fujitsu_remove(struct acpi_device *device)
713 {
714         struct fujitsu_t *fujitsu = acpi_driver_data(device);
715         struct input_dev *input = fujitsu->input;
716 
717         input_unregister_device(input);
718 
719         fujitsu->acpi_handle = NULL;
720 
721         return 0;
722 }
723 
724 /* Brightness notify */
725 
726 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
727 {
728         struct input_dev *input;
729         int keycode;
730         int oldb, newb;
731 
732         input = fujitsu->input;
733 
734         switch (event) {
735         case ACPI_FUJITSU_NOTIFY_CODE1:
736                 keycode = 0;
737                 oldb = fujitsu->brightness_level;
738                 get_lcd_level();
739                 newb = fujitsu->brightness_level;
740 
741                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
742                             "brightness button event [%i -> %i (%i)]\n",
743                             oldb, newb, fujitsu->brightness_changed);
744 
745                 if (oldb < newb) {
746                         if (disable_brightness_adjust != 1) {
747                                 if (use_alt_lcd_levels)
748                                         set_lcd_level_alt(newb);
749                                 else
750                                         set_lcd_level(newb);
751                         }
752                         keycode = KEY_BRIGHTNESSUP;
753                 } else if (oldb > newb) {
754                         if (disable_brightness_adjust != 1) {
755                                 if (use_alt_lcd_levels)
756                                         set_lcd_level_alt(newb);
757                                 else
758                                         set_lcd_level(newb);
759                         }
760                         keycode = KEY_BRIGHTNESSDOWN;
761                 }
762                 break;
763         default:
764                 keycode = KEY_UNKNOWN;
765                 vdbg_printk(FUJLAPTOP_DBG_WARN,
766                             "unsupported event [0x%x]\n", event);
767                 break;
768         }
769 
770         if (keycode != 0) {
771                 input_report_key(input, keycode, 1);
772                 input_sync(input);
773                 input_report_key(input, keycode, 0);
774                 input_sync(input);
775         }
776 }
777 
778 /* ACPI device for hotkey handling */
779 
780 static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
781 {
782         int result = 0;
783         int state = 0;
784         struct input_dev *input;
785         int error;
786         int i;
787 
788         if (!device)
789                 return -EINVAL;
790 
791         fujitsu_hotkey->acpi_handle = device->handle;
792         sprintf(acpi_device_name(device), "%s",
793                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
794         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
795         device->driver_data = fujitsu_hotkey;
796 
797         /* kfifo */
798         spin_lock_init(&fujitsu_hotkey->fifo_lock);
799         error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
800                         GFP_KERNEL);
801         if (error) {
802                 pr_err("kfifo_alloc failed\n");
803                 goto err_stop;
804         }
805 
806         fujitsu_hotkey->input = input = input_allocate_device();
807         if (!input) {
808                 error = -ENOMEM;
809                 goto err_free_fifo;
810         }
811 
812         snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
813                  "%s/video/input0", acpi_device_hid(device));
814 
815         input->name = acpi_device_name(device);
816         input->phys = fujitsu_hotkey->phys;
817         input->id.bustype = BUS_HOST;
818         input->id.product = 0x06;
819         input->dev.parent = &device->dev;
820 
821         set_bit(EV_KEY, input->evbit);
822         set_bit(fujitsu->keycode1, input->keybit);
823         set_bit(fujitsu->keycode2, input->keybit);
824         set_bit(fujitsu->keycode3, input->keybit);
825         set_bit(fujitsu->keycode4, input->keybit);
826         set_bit(KEY_UNKNOWN, input->keybit);
827 
828         error = input_register_device(input);
829         if (error)
830                 goto err_free_input_dev;
831 
832         error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
833         if (error) {
834                 pr_err("Error reading power state\n");
835                 goto err_unregister_input_dev;
836         }
837 
838         pr_info("ACPI: %s [%s] (%s)\n",
839                 acpi_device_name(device), acpi_device_bid(device),
840                 !device->power.state ? "on" : "off");
841 
842         fujitsu_hotkey->dev = device;
843 
844         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
845                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
846                 if (ACPI_FAILURE
847                     (acpi_evaluate_object
848                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
849                         pr_err("_INI Method failed\n");
850         }
851 
852         i = 0;
853         while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
854                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
855                 ; /* No action, result is discarded */
856         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
857 
858         fujitsu_hotkey->rfkill_supported =
859                 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
860 
861         /* Make sure our bitmask of supported functions is cleared if the
862            RFKILL function block is not implemented, like on the S7020. */
863         if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
864                 fujitsu_hotkey->rfkill_supported = 0;
865 
866         if (fujitsu_hotkey->rfkill_supported)
867                 fujitsu_hotkey->rfkill_state =
868                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
869 
870         /* Suspect this is a keymap of the application panel, print it */
871         pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
872 
873 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
874         if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
875                 result = led_classdev_register(&fujitsu->pf_device->dev,
876                                                 &logolamp_led);
877                 if (result == 0) {
878                         fujitsu_hotkey->logolamp_registered = 1;
879                 } else {
880                         pr_err("Could not register LED handler for logo lamp, error %i\n",
881                                result);
882                 }
883         }
884 
885         if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
886            (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
887                 result = led_classdev_register(&fujitsu->pf_device->dev,
888                                                 &kblamps_led);
889                 if (result == 0) {
890                         fujitsu_hotkey->kblamps_registered = 1;
891                 } else {
892                         pr_err("Could not register LED handler for keyboard lamps, error %i\n",
893                                result);
894                 }
895         }
896 #endif
897 
898         return result;
899 
900 err_unregister_input_dev:
901         input_unregister_device(input);
902         input = NULL;
903 err_free_input_dev:
904         input_free_device(input);
905 err_free_fifo:
906         kfifo_free(&fujitsu_hotkey->fifo);
907 err_stop:
908         return error;
909 }
910 
911 static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
912 {
913         struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
914         struct input_dev *input = fujitsu_hotkey->input;
915 
916 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
917         if (fujitsu_hotkey->logolamp_registered)
918                 led_classdev_unregister(&logolamp_led);
919 
920         if (fujitsu_hotkey->kblamps_registered)
921                 led_classdev_unregister(&kblamps_led);
922 #endif
923 
924         input_unregister_device(input);
925 
926         kfifo_free(&fujitsu_hotkey->fifo);
927 
928         fujitsu_hotkey->acpi_handle = NULL;
929 
930         return 0;
931 }
932 
933 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
934 {
935         struct input_dev *input;
936         int keycode, keycode_r;
937         unsigned int irb = 1;
938         int i, status;
939 
940         input = fujitsu_hotkey->input;
941 
942         if (fujitsu_hotkey->rfkill_supported)
943                 fujitsu_hotkey->rfkill_state =
944                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
945 
946         switch (event) {
947         case ACPI_FUJITSU_NOTIFY_CODE1:
948                 i = 0;
949                 while ((irb =
950                         call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
951                                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
952                         switch (irb & 0x4ff) {
953                         case KEY1_CODE:
954                                 keycode = fujitsu->keycode1;
955                                 break;
956                         case KEY2_CODE:
957                                 keycode = fujitsu->keycode2;
958                                 break;
959                         case KEY3_CODE:
960                                 keycode = fujitsu->keycode3;
961                                 break;
962                         case KEY4_CODE:
963                                 keycode = fujitsu->keycode4;
964                                 break;
965                         case 0:
966                                 keycode = 0;
967                                 break;
968                         default:
969                                 vdbg_printk(FUJLAPTOP_DBG_WARN,
970                                             "Unknown GIRB result [%x]\n", irb);
971                                 keycode = -1;
972                                 break;
973                         }
974                         if (keycode > 0) {
975                                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
976                                         "Push keycode into ringbuffer [%d]\n",
977                                         keycode);
978                                 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
979                                                    (unsigned char *)&keycode,
980                                                    sizeof(keycode),
981                                                    &fujitsu_hotkey->fifo_lock);
982                                 if (status != sizeof(keycode)) {
983                                         vdbg_printk(FUJLAPTOP_DBG_WARN,
984                                             "Could not push keycode [0x%x]\n",
985                                             keycode);
986                                 } else {
987                                         input_report_key(input, keycode, 1);
988                                         input_sync(input);
989                                 }
990                         } else if (keycode == 0) {
991                                 while ((status =
992                                         kfifo_out_locked(
993                                          &fujitsu_hotkey->fifo,
994                                          (unsigned char *) &keycode_r,
995                                          sizeof(keycode_r),
996                                          &fujitsu_hotkey->fifo_lock))
997                                          == sizeof(keycode_r)) {
998                                         input_report_key(input, keycode_r, 0);
999                                         input_sync(input);
1000                                         vdbg_printk(FUJLAPTOP_DBG_TRACE,
1001                                           "Pop keycode from ringbuffer [%d]\n",
1002                                           keycode_r);
1003                                 }
1004                         }
1005                 }
1006 
1007                 break;
1008         default:
1009                 keycode = KEY_UNKNOWN;
1010                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1011                             "Unsupported event [0x%x]\n", event);
1012                 input_report_key(input, keycode, 1);
1013                 input_sync(input);
1014                 input_report_key(input, keycode, 0);
1015                 input_sync(input);
1016                 break;
1017         }
1018 }
1019 
1020 /* Initialization */
1021 
1022 static const struct acpi_device_id fujitsu_device_ids[] = {
1023         {ACPI_FUJITSU_HID, 0},
1024         {"", 0},
1025 };
1026 
1027 static struct acpi_driver acpi_fujitsu_driver = {
1028         .name = ACPI_FUJITSU_DRIVER_NAME,
1029         .class = ACPI_FUJITSU_CLASS,
1030         .ids = fujitsu_device_ids,
1031         .ops = {
1032                 .add = acpi_fujitsu_add,
1033                 .remove = acpi_fujitsu_remove,
1034                 .notify = acpi_fujitsu_notify,
1035                 },
1036 };
1037 
1038 static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1039         {ACPI_FUJITSU_HOTKEY_HID, 0},
1040         {"", 0},
1041 };
1042 
1043 static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1044         .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1045         .class = ACPI_FUJITSU_CLASS,
1046         .ids = fujitsu_hotkey_device_ids,
1047         .ops = {
1048                 .add = acpi_fujitsu_hotkey_add,
1049                 .remove = acpi_fujitsu_hotkey_remove,
1050                 .notify = acpi_fujitsu_hotkey_notify,
1051                 },
1052 };
1053 
1054 static int __init fujitsu_init(void)
1055 {
1056         int ret, result, max_brightness;
1057 
1058         if (acpi_disabled)
1059                 return -ENODEV;
1060 
1061         fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1062         if (!fujitsu)
1063                 return -ENOMEM;
1064         fujitsu->keycode1 = KEY_PROG1;
1065         fujitsu->keycode2 = KEY_PROG2;
1066         fujitsu->keycode3 = KEY_PROG3;
1067         fujitsu->keycode4 = KEY_PROG4;
1068         dmi_check_system(fujitsu_dmi_table);
1069 
1070         result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1071         if (result < 0) {
1072                 ret = -ENODEV;
1073                 goto fail_acpi;
1074         }
1075 
1076         /* Register platform stuff */
1077 
1078         fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1079         if (!fujitsu->pf_device) {
1080                 ret = -ENOMEM;
1081                 goto fail_platform_driver;
1082         }
1083 
1084         ret = platform_device_add(fujitsu->pf_device);
1085         if (ret)
1086                 goto fail_platform_device1;
1087 
1088         ret =
1089             sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1090                                &fujitsupf_attribute_group);
1091         if (ret)
1092                 goto fail_platform_device2;
1093 
1094         /* Register backlight stuff */
1095 
1096         if (!acpi_video_backlight_support()) {
1097                 struct backlight_properties props;
1098 
1099                 memset(&props, 0, sizeof(struct backlight_properties));
1100                 max_brightness = fujitsu->max_brightness;
1101                 props.type = BACKLIGHT_PLATFORM;
1102                 props.max_brightness = max_brightness - 1;
1103                 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1104                                                                NULL, NULL,
1105                                                                &fujitsubl_ops,
1106                                                                &props);
1107                 if (IS_ERR(fujitsu->bl_device)) {
1108                         ret = PTR_ERR(fujitsu->bl_device);
1109                         fujitsu->bl_device = NULL;
1110                         goto fail_sysfs_group;
1111                 }
1112                 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1113         }
1114 
1115         ret = platform_driver_register(&fujitsupf_driver);
1116         if (ret)
1117                 goto fail_backlight;
1118 
1119         /* Register hotkey driver */
1120 
1121         fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1122         if (!fujitsu_hotkey) {
1123                 ret = -ENOMEM;
1124                 goto fail_hotkey;
1125         }
1126 
1127         result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1128         if (result < 0) {
1129                 ret = -ENODEV;
1130                 goto fail_hotkey1;
1131         }
1132 
1133         /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1134 
1135         if (!acpi_video_backlight_support()) {
1136                 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1137                         fujitsu->bl_device->props.power = 4;
1138                 else
1139                         fujitsu->bl_device->props.power = 0;
1140         }
1141 
1142         pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1143 
1144         return 0;
1145 
1146 fail_hotkey1:
1147         kfree(fujitsu_hotkey);
1148 fail_hotkey:
1149         platform_driver_unregister(&fujitsupf_driver);
1150 fail_backlight:
1151         if (fujitsu->bl_device)
1152                 backlight_device_unregister(fujitsu->bl_device);
1153 fail_sysfs_group:
1154         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1155                            &fujitsupf_attribute_group);
1156 fail_platform_device2:
1157         platform_device_del(fujitsu->pf_device);
1158 fail_platform_device1:
1159         platform_device_put(fujitsu->pf_device);
1160 fail_platform_driver:
1161         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1162 fail_acpi:
1163         kfree(fujitsu);
1164 
1165         return ret;
1166 }
1167 
1168 static void __exit fujitsu_cleanup(void)
1169 {
1170         acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1171 
1172         kfree(fujitsu_hotkey);
1173 
1174         platform_driver_unregister(&fujitsupf_driver);
1175 
1176         if (fujitsu->bl_device)
1177                 backlight_device_unregister(fujitsu->bl_device);
1178 
1179         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1180                            &fujitsupf_attribute_group);
1181 
1182         platform_device_unregister(fujitsu->pf_device);
1183 
1184         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1185 
1186         kfree(fujitsu);
1187 
1188         pr_info("driver unloaded\n");
1189 }
1190 
1191 module_init(fujitsu_init);
1192 module_exit(fujitsu_cleanup);
1193 
1194 module_param(use_alt_lcd_levels, uint, 0644);
1195 MODULE_PARM_DESC(use_alt_lcd_levels,
1196                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1197 module_param(disable_brightness_adjust, uint, 0644);
1198 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1199 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1200 module_param_named(debug, dbg_level, uint, 0644);
1201 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1202 #endif
1203 
1204 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1205 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1206 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1207 MODULE_LICENSE("GPL");
1208 
1209 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1210 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1211 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1212 
1213 static struct pnp_device_id pnp_ids[] __used = {
1214         {.id = "FUJ02bf"},
1215         {.id = "FUJ02B1"},
1216         {.id = "FUJ02E3"},
1217         {.id = ""}
1218 };
1219 
1220 MODULE_DEVICE_TABLE(pnp, pnp_ids);
1221 

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