Version:  2.6.34 2.6.35 2.6.36 2.6.37 2.6.38 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

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/video_output.h>
 70 #include <linux/platform_device.h>
 71 #include <linux/slab.h>
 72 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
 73 #include <linux/leds.h>
 74 #endif
 75 
 76 #define FUJITSU_DRIVER_VERSION "0.6.0"
 77 
 78 #define FUJITSU_LCD_N_LEVELS 8
 79 
 80 #define ACPI_FUJITSU_CLASS              "fujitsu"
 81 #define ACPI_FUJITSU_HID                "FUJ02B1"
 82 #define ACPI_FUJITSU_DRIVER_NAME        "Fujitsu laptop FUJ02B1 ACPI brightness driver"
 83 #define ACPI_FUJITSU_DEVICE_NAME        "Fujitsu FUJ02B1"
 84 #define ACPI_FUJITSU_HOTKEY_HID         "FUJ02E3"
 85 #define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
 86 #define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
 87 
 88 #define ACPI_FUJITSU_NOTIFY_CODE1     0x80
 89 
 90 #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS     0x86
 91 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
 92 
 93 /* FUNC interface - command values */
 94 #define FUNC_RFKILL     0x1000
 95 #define FUNC_LEDS       0x1001
 96 #define FUNC_BUTTONS    0x1002
 97 #define FUNC_BACKLIGHT  0x1004
 98 
 99 /* FUNC interface - responses */
100 #define UNSUPPORTED_CMD 0x80000000
101 
102 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
103 /* FUNC interface - LED control */
104 #define FUNC_LED_OFF    0x1
105 #define FUNC_LED_ON     0x30001
106 #define KEYBOARD_LAMPS  0x100
107 #define LOGOLAMP_POWERON 0x2000
108 #define LOGOLAMP_ALWAYS  0x4000
109 #endif
110 
111 /* Hotkey details */
112 #define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
113 #define KEY2_CODE       0x411
114 #define KEY3_CODE       0x412
115 #define KEY4_CODE       0x413
116 
117 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
118 #define RINGBUFFERSIZE 40
119 
120 /* Debugging */
121 #define FUJLAPTOP_LOG      ACPI_FUJITSU_HID ": "
122 #define FUJLAPTOP_ERR      KERN_ERR FUJLAPTOP_LOG
123 #define FUJLAPTOP_NOTICE   KERN_NOTICE FUJLAPTOP_LOG
124 #define FUJLAPTOP_INFO     KERN_INFO FUJLAPTOP_LOG
125 #define FUJLAPTOP_DEBUG    KERN_DEBUG FUJLAPTOP_LOG
126 
127 #define FUJLAPTOP_DBG_ALL         0xffff
128 #define FUJLAPTOP_DBG_ERROR       0x0001
129 #define FUJLAPTOP_DBG_WARN        0x0002
130 #define FUJLAPTOP_DBG_INFO        0x0004
131 #define FUJLAPTOP_DBG_TRACE       0x0008
132 
133 #define dbg_printk(a_dbg_level, format, arg...) \
134         do { if (dbg_level & a_dbg_level) \
135                 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
136         } while (0)
137 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
138 #define vdbg_printk(a_dbg_level, format, arg...) \
139         dbg_printk(a_dbg_level, format, ## arg)
140 #else
141 #define vdbg_printk(a_dbg_level, format, arg...)
142 #endif
143 
144 /* Device controlling the backlight and associated keys */
145 struct fujitsu_t {
146         acpi_handle acpi_handle;
147         struct acpi_device *dev;
148         struct input_dev *input;
149         char phys[32];
150         struct backlight_device *bl_device;
151         struct platform_device *pf_device;
152         int keycode1, keycode2, keycode3, keycode4;
153 
154         unsigned int max_brightness;
155         unsigned int brightness_changed;
156         unsigned int brightness_level;
157 };
158 
159 static struct fujitsu_t *fujitsu;
160 static int use_alt_lcd_levels = -1;
161 static int disable_brightness_adjust = -1;
162 
163 /* Device used to access other hotkeys on the laptop */
164 struct fujitsu_hotkey_t {
165         acpi_handle acpi_handle;
166         struct acpi_device *dev;
167         struct input_dev *input;
168         char phys[32];
169         struct platform_device *pf_device;
170         struct kfifo fifo;
171         spinlock_t fifo_lock;
172         int rfkill_supported;
173         int rfkill_state;
174         int logolamp_registered;
175         int kblamps_registered;
176 };
177 
178 static struct fujitsu_hotkey_t *fujitsu_hotkey;
179 
180 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
181 
182 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
183 static enum led_brightness logolamp_get(struct led_classdev *cdev);
184 static void logolamp_set(struct led_classdev *cdev,
185                                enum led_brightness brightness);
186 
187 static struct led_classdev logolamp_led = {
188  .name = "fujitsu::logolamp",
189  .brightness_get = logolamp_get,
190  .brightness_set = logolamp_set
191 };
192 
193 static enum led_brightness kblamps_get(struct led_classdev *cdev);
194 static void kblamps_set(struct led_classdev *cdev,
195                                enum led_brightness brightness);
196 
197 static struct led_classdev kblamps_led = {
198  .name = "fujitsu::kblamps",
199  .brightness_get = kblamps_get,
200  .brightness_set = kblamps_set
201 };
202 #endif
203 
204 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
205 static u32 dbg_level = 0x03;
206 #endif
207 
208 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
209 
210 /* Fujitsu ACPI interface function */
211 
212 static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
213 {
214         acpi_status status = AE_OK;
215         union acpi_object params[4] = {
216         { .type = ACPI_TYPE_INTEGER },
217         { .type = ACPI_TYPE_INTEGER },
218         { .type = ACPI_TYPE_INTEGER },
219         { .type = ACPI_TYPE_INTEGER }
220         };
221         struct acpi_object_list arg_list = { 4, &params[0] };
222         unsigned long long value;
223         acpi_handle handle = NULL;
224 
225         status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
226         if (ACPI_FAILURE(status)) {
227                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
228                                 "FUNC interface is not present\n");
229                 return -ENODEV;
230         }
231 
232         params[0].integer.value = cmd;
233         params[1].integer.value = arg0;
234         params[2].integer.value = arg1;
235         params[3].integer.value = arg2;
236 
237         status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
238         if (ACPI_FAILURE(status)) {
239                 vdbg_printk(FUJLAPTOP_DBG_WARN,
240                         "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
241                                 cmd, arg0, arg1, arg2);
242                 return -ENODEV;
243         }
244 
245         vdbg_printk(FUJLAPTOP_DBG_TRACE,
246                 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
247                         cmd, arg0, arg1, arg2, (int)value);
248         return value;
249 }
250 
251 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
252 /* LED class callbacks */
253 
254 static void logolamp_set(struct led_classdev *cdev,
255                                enum led_brightness brightness)
256 {
257         if (brightness >= LED_FULL) {
258                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
259                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
260         } else if (brightness >= LED_HALF) {
261                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
262                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
263         } else {
264                 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
265         }
266 }
267 
268 static void kblamps_set(struct led_classdev *cdev,
269                                enum led_brightness brightness)
270 {
271         if (brightness >= LED_FULL)
272                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
273         else
274                 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
275 }
276 
277 static enum led_brightness logolamp_get(struct led_classdev *cdev)
278 {
279         enum led_brightness brightness = LED_OFF;
280         int poweron, always;
281 
282         poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
283         if (poweron == FUNC_LED_ON) {
284                 brightness = LED_HALF;
285                 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
286                 if (always == FUNC_LED_ON)
287                         brightness = LED_FULL;
288         }
289         return brightness;
290 }
291 
292 static enum led_brightness kblamps_get(struct led_classdev *cdev)
293 {
294         enum led_brightness brightness = LED_OFF;
295 
296         if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
297                 brightness = LED_FULL;
298 
299         return brightness;
300 }
301 #endif
302 
303 /* Hardware access for LCD brightness control */
304 
305 static int set_lcd_level(int level)
306 {
307         acpi_status status = AE_OK;
308         acpi_handle handle = NULL;
309 
310         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
311                     level);
312 
313         if (level < 0 || level >= fujitsu->max_brightness)
314                 return -EINVAL;
315 
316         status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
317         if (ACPI_FAILURE(status)) {
318                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
319                 return -ENODEV;
320         }
321 
322 
323         status = acpi_execute_simple_method(handle, NULL, level);
324         if (ACPI_FAILURE(status))
325                 return -ENODEV;
326 
327         return 0;
328 }
329 
330 static int set_lcd_level_alt(int level)
331 {
332         acpi_status status = AE_OK;
333         acpi_handle handle = NULL;
334 
335         vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
336                     level);
337 
338         if (level < 0 || level >= fujitsu->max_brightness)
339                 return -EINVAL;
340 
341         status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
342         if (ACPI_FAILURE(status)) {
343                 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
344                 return -ENODEV;
345         }
346 
347         status = acpi_execute_simple_method(handle, NULL, level);
348         if (ACPI_FAILURE(status))
349                 return -ENODEV;
350 
351         return 0;
352 }
353 
354 static int get_lcd_level(void)
355 {
356         unsigned long long state = 0;
357         acpi_status status = AE_OK;
358 
359         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
360 
361         status =
362             acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
363         if (ACPI_FAILURE(status))
364                 return 0;
365 
366         fujitsu->brightness_level = state & 0x0fffffff;
367 
368         if (state & 0x80000000)
369                 fujitsu->brightness_changed = 1;
370         else
371                 fujitsu->brightness_changed = 0;
372 
373         return fujitsu->brightness_level;
374 }
375 
376 static int get_max_brightness(void)
377 {
378         unsigned long long state = 0;
379         acpi_status status = AE_OK;
380 
381         vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
382 
383         status =
384             acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
385         if (ACPI_FAILURE(status))
386                 return -1;
387 
388         fujitsu->max_brightness = state;
389 
390         return fujitsu->max_brightness;
391 }
392 
393 /* Backlight device stuff */
394 
395 static int bl_get_brightness(struct backlight_device *b)
396 {
397         return get_lcd_level();
398 }
399 
400 static int bl_update_status(struct backlight_device *b)
401 {
402         int ret;
403         if (b->props.power == 4)
404                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
405         else
406                 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
407         if (ret != 0)
408                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
409                         "Unable to adjust backlight power, error code %i\n",
410                         ret);
411 
412         if (use_alt_lcd_levels)
413                 ret = set_lcd_level_alt(b->props.brightness);
414         else
415                 ret = set_lcd_level(b->props.brightness);
416         if (ret != 0)
417                 vdbg_printk(FUJLAPTOP_DBG_ERROR,
418                         "Unable to adjust LCD brightness, error code %i\n",
419                         ret);
420         return ret;
421 }
422 
423 static const struct backlight_ops fujitsubl_ops = {
424         .get_brightness = bl_get_brightness,
425         .update_status = bl_update_status,
426 };
427 
428 /* Platform LCD brightness device */
429 
430 static ssize_t
431 show_max_brightness(struct device *dev,
432                     struct device_attribute *attr, char *buf)
433 {
434 
435         int ret;
436 
437         ret = get_max_brightness();
438         if (ret < 0)
439                 return ret;
440 
441         return sprintf(buf, "%i\n", ret);
442 }
443 
444 static ssize_t
445 show_brightness_changed(struct device *dev,
446                         struct device_attribute *attr, char *buf)
447 {
448 
449         int ret;
450 
451         ret = fujitsu->brightness_changed;
452         if (ret < 0)
453                 return ret;
454 
455         return sprintf(buf, "%i\n", ret);
456 }
457 
458 static ssize_t show_lcd_level(struct device *dev,
459                               struct device_attribute *attr, char *buf)
460 {
461 
462         int ret;
463 
464         ret = get_lcd_level();
465         if (ret < 0)
466                 return ret;
467 
468         return sprintf(buf, "%i\n", ret);
469 }
470 
471 static ssize_t store_lcd_level(struct device *dev,
472                                struct device_attribute *attr, const char *buf,
473                                size_t count)
474 {
475 
476         int level, ret;
477 
478         if (sscanf(buf, "%i", &level) != 1
479             || (level < 0 || level >= fujitsu->max_brightness))
480                 return -EINVAL;
481 
482         if (use_alt_lcd_levels)
483                 ret = set_lcd_level_alt(level);
484         else
485                 ret = set_lcd_level(level);
486         if (ret < 0)
487                 return ret;
488 
489         ret = get_lcd_level();
490         if (ret < 0)
491                 return ret;
492 
493         return count;
494 }
495 
496 static ssize_t
497 ignore_store(struct device *dev,
498              struct device_attribute *attr, const char *buf, size_t count)
499 {
500         return count;
501 }
502 
503 static ssize_t
504 show_lid_state(struct device *dev,
505                         struct device_attribute *attr, char *buf)
506 {
507         if (!(fujitsu_hotkey->rfkill_supported & 0x100))
508                 return sprintf(buf, "unknown\n");
509         if (fujitsu_hotkey->rfkill_state & 0x100)
510                 return sprintf(buf, "open\n");
511         else
512                 return sprintf(buf, "closed\n");
513 }
514 
515 static ssize_t
516 show_dock_state(struct device *dev,
517                         struct device_attribute *attr, char *buf)
518 {
519         if (!(fujitsu_hotkey->rfkill_supported & 0x200))
520                 return sprintf(buf, "unknown\n");
521         if (fujitsu_hotkey->rfkill_state & 0x200)
522                 return sprintf(buf, "docked\n");
523         else
524                 return sprintf(buf, "undocked\n");
525 }
526 
527 static ssize_t
528 show_radios_state(struct device *dev,
529                         struct device_attribute *attr, char *buf)
530 {
531         if (!(fujitsu_hotkey->rfkill_supported & 0x20))
532                 return sprintf(buf, "unknown\n");
533         if (fujitsu_hotkey->rfkill_state & 0x20)
534                 return sprintf(buf, "on\n");
535         else
536                 return sprintf(buf, "killed\n");
537 }
538 
539 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
540 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
541                    ignore_store);
542 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
543 static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
544 static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
545 static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
546 
547 static struct attribute *fujitsupf_attributes[] = {
548         &dev_attr_brightness_changed.attr,
549         &dev_attr_max_brightness.attr,
550         &dev_attr_lcd_level.attr,
551         &dev_attr_lid.attr,
552         &dev_attr_dock.attr,
553         &dev_attr_radios.attr,
554         NULL
555 };
556 
557 static struct attribute_group fujitsupf_attribute_group = {
558         .attrs = fujitsupf_attributes
559 };
560 
561 static struct platform_driver fujitsupf_driver = {
562         .driver = {
563                    .name = "fujitsu-laptop",
564                    .owner = THIS_MODULE,
565                    }
566 };
567 
568 static void dmi_check_cb_common(const struct dmi_system_id *id)
569 {
570         pr_info("Identified laptop model '%s'\n", id->ident);
571         if (use_alt_lcd_levels == -1) {
572                 if (acpi_has_method(NULL,
573                                 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
574                         use_alt_lcd_levels = 1;
575                 else
576                         use_alt_lcd_levels = 0;
577                 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
578                         "%i\n", use_alt_lcd_levels);
579         }
580 }
581 
582 static int dmi_check_cb_s6410(const struct dmi_system_id *id)
583 {
584         dmi_check_cb_common(id);
585         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
586         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
587         return 1;
588 }
589 
590 static int dmi_check_cb_s6420(const struct dmi_system_id *id)
591 {
592         dmi_check_cb_common(id);
593         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
594         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
595         return 1;
596 }
597 
598 static int dmi_check_cb_p8010(const struct dmi_system_id *id)
599 {
600         dmi_check_cb_common(id);
601         fujitsu->keycode1 = KEY_HELP;   /* "Support" */
602         fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
603         fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
604         return 1;
605 }
606 
607 static struct dmi_system_id fujitsu_dmi_table[] = {
608         {
609          .ident = "Fujitsu Siemens S6410",
610          .matches = {
611                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
612                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
613                      },
614          .callback = dmi_check_cb_s6410},
615         {
616          .ident = "Fujitsu Siemens S6420",
617          .matches = {
618                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
619                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
620                      },
621          .callback = dmi_check_cb_s6420},
622         {
623          .ident = "Fujitsu LifeBook P8010",
624          .matches = {
625                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
626                      DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
627                      },
628          .callback = dmi_check_cb_p8010},
629         {}
630 };
631 
632 /* ACPI device for LCD brightness control */
633 
634 static int acpi_fujitsu_add(struct acpi_device *device)
635 {
636         int state = 0;
637         struct input_dev *input;
638         int error;
639 
640         if (!device)
641                 return -EINVAL;
642 
643         fujitsu->acpi_handle = device->handle;
644         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
645         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
646         device->driver_data = fujitsu;
647 
648         fujitsu->input = input = input_allocate_device();
649         if (!input) {
650                 error = -ENOMEM;
651                 goto err_stop;
652         }
653 
654         snprintf(fujitsu->phys, sizeof(fujitsu->phys),
655                  "%s/video/input0", acpi_device_hid(device));
656 
657         input->name = acpi_device_name(device);
658         input->phys = fujitsu->phys;
659         input->id.bustype = BUS_HOST;
660         input->id.product = 0x06;
661         input->dev.parent = &device->dev;
662         input->evbit[0] = BIT(EV_KEY);
663         set_bit(KEY_BRIGHTNESSUP, input->keybit);
664         set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
665         set_bit(KEY_UNKNOWN, input->keybit);
666 
667         error = input_register_device(input);
668         if (error)
669                 goto err_free_input_dev;
670 
671         error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
672         if (error) {
673                 pr_err("Error reading power state\n");
674                 goto err_unregister_input_dev;
675         }
676 
677         pr_info("ACPI: %s [%s] (%s)\n",
678                acpi_device_name(device), acpi_device_bid(device),
679                !device->power.state ? "on" : "off");
680 
681         fujitsu->dev = device;
682 
683         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
684                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
685                 if (ACPI_FAILURE
686                     (acpi_evaluate_object
687                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
688                         pr_err("_INI Method failed\n");
689         }
690 
691         /* do config (detect defaults) */
692         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
693         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
694         vdbg_printk(FUJLAPTOP_DBG_INFO,
695                     "config: [alt interface: %d], [adjust disable: %d]\n",
696                     use_alt_lcd_levels, disable_brightness_adjust);
697 
698         if (get_max_brightness() <= 0)
699                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
700         get_lcd_level();
701 
702         return 0;
703 
704 err_unregister_input_dev:
705         input_unregister_device(input);
706         input = NULL;
707 err_free_input_dev:
708         input_free_device(input);
709 err_stop:
710         return error;
711 }
712 
713 static int acpi_fujitsu_remove(struct acpi_device *device)
714 {
715         struct fujitsu_t *fujitsu = acpi_driver_data(device);
716         struct input_dev *input = fujitsu->input;
717 
718         input_unregister_device(input);
719 
720         fujitsu->acpi_handle = NULL;
721 
722         return 0;
723 }
724 
725 /* Brightness notify */
726 
727 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
728 {
729         struct input_dev *input;
730         int keycode;
731         int oldb, newb;
732 
733         input = fujitsu->input;
734 
735         switch (event) {
736         case ACPI_FUJITSU_NOTIFY_CODE1:
737                 keycode = 0;
738                 oldb = fujitsu->brightness_level;
739                 get_lcd_level();
740                 newb = fujitsu->brightness_level;
741 
742                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
743                             "brightness button event [%i -> %i (%i)]\n",
744                             oldb, newb, fujitsu->brightness_changed);
745 
746                 if (oldb < newb) {
747                         if (disable_brightness_adjust != 1) {
748                                 if (use_alt_lcd_levels)
749                                         set_lcd_level_alt(newb);
750                                 else
751                                         set_lcd_level(newb);
752                         }
753                         keycode = KEY_BRIGHTNESSUP;
754                 } else if (oldb > newb) {
755                         if (disable_brightness_adjust != 1) {
756                                 if (use_alt_lcd_levels)
757                                         set_lcd_level_alt(newb);
758                                 else
759                                         set_lcd_level(newb);
760                         }
761                         keycode = KEY_BRIGHTNESSDOWN;
762                 }
763                 break;
764         default:
765                 keycode = KEY_UNKNOWN;
766                 vdbg_printk(FUJLAPTOP_DBG_WARN,
767                             "unsupported event [0x%x]\n", event);
768                 break;
769         }
770 
771         if (keycode != 0) {
772                 input_report_key(input, keycode, 1);
773                 input_sync(input);
774                 input_report_key(input, keycode, 0);
775                 input_sync(input);
776         }
777 }
778 
779 /* ACPI device for hotkey handling */
780 
781 static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
782 {
783         int result = 0;
784         int state = 0;
785         struct input_dev *input;
786         int error;
787         int i;
788 
789         if (!device)
790                 return -EINVAL;
791 
792         fujitsu_hotkey->acpi_handle = device->handle;
793         sprintf(acpi_device_name(device), "%s",
794                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
795         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
796         device->driver_data = fujitsu_hotkey;
797 
798         /* kfifo */
799         spin_lock_init(&fujitsu_hotkey->fifo_lock);
800         error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
801                         GFP_KERNEL);
802         if (error) {
803                 pr_err("kfifo_alloc failed\n");
804                 goto err_stop;
805         }
806 
807         fujitsu_hotkey->input = input = input_allocate_device();
808         if (!input) {
809                 error = -ENOMEM;
810                 goto err_free_fifo;
811         }
812 
813         snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
814                  "%s/video/input0", acpi_device_hid(device));
815 
816         input->name = acpi_device_name(device);
817         input->phys = fujitsu_hotkey->phys;
818         input->id.bustype = BUS_HOST;
819         input->id.product = 0x06;
820         input->dev.parent = &device->dev;
821 
822         set_bit(EV_KEY, input->evbit);
823         set_bit(fujitsu->keycode1, input->keybit);
824         set_bit(fujitsu->keycode2, input->keybit);
825         set_bit(fujitsu->keycode3, input->keybit);
826         set_bit(fujitsu->keycode4, input->keybit);
827         set_bit(KEY_UNKNOWN, input->keybit);
828 
829         error = input_register_device(input);
830         if (error)
831                 goto err_free_input_dev;
832 
833         error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
834         if (error) {
835                 pr_err("Error reading power state\n");
836                 goto err_unregister_input_dev;
837         }
838 
839         pr_info("ACPI: %s [%s] (%s)\n",
840                 acpi_device_name(device), acpi_device_bid(device),
841                 !device->power.state ? "on" : "off");
842 
843         fujitsu_hotkey->dev = device;
844 
845         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
846                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
847                 if (ACPI_FAILURE
848                     (acpi_evaluate_object
849                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
850                         pr_err("_INI Method failed\n");
851         }
852 
853         i = 0;
854         while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
855                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
856                 ; /* No action, result is discarded */
857         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
858 
859         fujitsu_hotkey->rfkill_supported =
860                 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
861 
862         /* Make sure our bitmask of supported functions is cleared if the
863            RFKILL function block is not implemented, like on the S7020. */
864         if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
865                 fujitsu_hotkey->rfkill_supported = 0;
866 
867         if (fujitsu_hotkey->rfkill_supported)
868                 fujitsu_hotkey->rfkill_state =
869                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
870 
871         /* Suspect this is a keymap of the application panel, print it */
872         pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
873 
874 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
875         if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
876                 result = led_classdev_register(&fujitsu->pf_device->dev,
877                                                 &logolamp_led);
878                 if (result == 0) {
879                         fujitsu_hotkey->logolamp_registered = 1;
880                 } else {
881                         pr_err("Could not register LED handler for logo lamp, error %i\n",
882                                result);
883                 }
884         }
885 
886         if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
887            (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
888                 result = led_classdev_register(&fujitsu->pf_device->dev,
889                                                 &kblamps_led);
890                 if (result == 0) {
891                         fujitsu_hotkey->kblamps_registered = 1;
892                 } else {
893                         pr_err("Could not register LED handler for keyboard lamps, error %i\n",
894                                result);
895                 }
896         }
897 #endif
898 
899         return result;
900 
901 err_unregister_input_dev:
902         input_unregister_device(input);
903         input = NULL;
904 err_free_input_dev:
905         input_free_device(input);
906 err_free_fifo:
907         kfifo_free(&fujitsu_hotkey->fifo);
908 err_stop:
909         return error;
910 }
911 
912 static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
913 {
914         struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
915         struct input_dev *input = fujitsu_hotkey->input;
916 
917 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
918         if (fujitsu_hotkey->logolamp_registered)
919                 led_classdev_unregister(&logolamp_led);
920 
921         if (fujitsu_hotkey->kblamps_registered)
922                 led_classdev_unregister(&kblamps_led);
923 #endif
924 
925         input_unregister_device(input);
926 
927         kfifo_free(&fujitsu_hotkey->fifo);
928 
929         fujitsu_hotkey->acpi_handle = NULL;
930 
931         return 0;
932 }
933 
934 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
935 {
936         struct input_dev *input;
937         int keycode, keycode_r;
938         unsigned int irb = 1;
939         int i, status;
940 
941         input = fujitsu_hotkey->input;
942 
943         if (fujitsu_hotkey->rfkill_supported)
944                 fujitsu_hotkey->rfkill_state =
945                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
946 
947         switch (event) {
948         case ACPI_FUJITSU_NOTIFY_CODE1:
949                 i = 0;
950                 while ((irb =
951                         call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
952                                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
953                         switch (irb & 0x4ff) {
954                         case KEY1_CODE:
955                                 keycode = fujitsu->keycode1;
956                                 break;
957                         case KEY2_CODE:
958                                 keycode = fujitsu->keycode2;
959                                 break;
960                         case KEY3_CODE:
961                                 keycode = fujitsu->keycode3;
962                                 break;
963                         case KEY4_CODE:
964                                 keycode = fujitsu->keycode4;
965                                 break;
966                         case 0:
967                                 keycode = 0;
968                                 break;
969                         default:
970                                 vdbg_printk(FUJLAPTOP_DBG_WARN,
971                                             "Unknown GIRB result [%x]\n", irb);
972                                 keycode = -1;
973                                 break;
974                         }
975                         if (keycode > 0) {
976                                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
977                                         "Push keycode into ringbuffer [%d]\n",
978                                         keycode);
979                                 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
980                                                    (unsigned char *)&keycode,
981                                                    sizeof(keycode),
982                                                    &fujitsu_hotkey->fifo_lock);
983                                 if (status != sizeof(keycode)) {
984                                         vdbg_printk(FUJLAPTOP_DBG_WARN,
985                                             "Could not push keycode [0x%x]\n",
986                                             keycode);
987                                 } else {
988                                         input_report_key(input, keycode, 1);
989                                         input_sync(input);
990                                 }
991                         } else if (keycode == 0) {
992                                 while ((status =
993                                         kfifo_out_locked(
994                                          &fujitsu_hotkey->fifo,
995                                          (unsigned char *) &keycode_r,
996                                          sizeof(keycode_r),
997                                          &fujitsu_hotkey->fifo_lock))
998                                          == sizeof(keycode_r)) {
999                                         input_report_key(input, keycode_r, 0);
1000                                         input_sync(input);
1001                                         vdbg_printk(FUJLAPTOP_DBG_TRACE,
1002                                           "Pop keycode from ringbuffer [%d]\n",
1003                                           keycode_r);
1004                                 }
1005                         }
1006                 }
1007 
1008                 break;
1009         default:
1010                 keycode = KEY_UNKNOWN;
1011                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1012                             "Unsupported event [0x%x]\n", event);
1013                 input_report_key(input, keycode, 1);
1014                 input_sync(input);
1015                 input_report_key(input, keycode, 0);
1016                 input_sync(input);
1017                 break;
1018         }
1019 }
1020 
1021 /* Initialization */
1022 
1023 static const struct acpi_device_id fujitsu_device_ids[] = {
1024         {ACPI_FUJITSU_HID, 0},
1025         {"", 0},
1026 };
1027 
1028 static struct acpi_driver acpi_fujitsu_driver = {
1029         .name = ACPI_FUJITSU_DRIVER_NAME,
1030         .class = ACPI_FUJITSU_CLASS,
1031         .ids = fujitsu_device_ids,
1032         .ops = {
1033                 .add = acpi_fujitsu_add,
1034                 .remove = acpi_fujitsu_remove,
1035                 .notify = acpi_fujitsu_notify,
1036                 },
1037 };
1038 
1039 static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1040         {ACPI_FUJITSU_HOTKEY_HID, 0},
1041         {"", 0},
1042 };
1043 
1044 static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1045         .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1046         .class = ACPI_FUJITSU_CLASS,
1047         .ids = fujitsu_hotkey_device_ids,
1048         .ops = {
1049                 .add = acpi_fujitsu_hotkey_add,
1050                 .remove = acpi_fujitsu_hotkey_remove,
1051                 .notify = acpi_fujitsu_hotkey_notify,
1052                 },
1053 };
1054 
1055 static int __init fujitsu_init(void)
1056 {
1057         int ret, result, max_brightness;
1058 
1059         if (acpi_disabled)
1060                 return -ENODEV;
1061 
1062         fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1063         if (!fujitsu)
1064                 return -ENOMEM;
1065         fujitsu->keycode1 = KEY_PROG1;
1066         fujitsu->keycode2 = KEY_PROG2;
1067         fujitsu->keycode3 = KEY_PROG3;
1068         fujitsu->keycode4 = KEY_PROG4;
1069         dmi_check_system(fujitsu_dmi_table);
1070 
1071         result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1072         if (result < 0) {
1073                 ret = -ENODEV;
1074                 goto fail_acpi;
1075         }
1076 
1077         /* Register platform stuff */
1078 
1079         fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1080         if (!fujitsu->pf_device) {
1081                 ret = -ENOMEM;
1082                 goto fail_platform_driver;
1083         }
1084 
1085         ret = platform_device_add(fujitsu->pf_device);
1086         if (ret)
1087                 goto fail_platform_device1;
1088 
1089         ret =
1090             sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1091                                &fujitsupf_attribute_group);
1092         if (ret)
1093                 goto fail_platform_device2;
1094 
1095         /* Register backlight stuff */
1096 
1097         if (!acpi_video_backlight_support()) {
1098                 struct backlight_properties props;
1099 
1100                 memset(&props, 0, sizeof(struct backlight_properties));
1101                 max_brightness = fujitsu->max_brightness;
1102                 props.type = BACKLIGHT_PLATFORM;
1103                 props.max_brightness = max_brightness - 1;
1104                 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1105                                                                NULL, NULL,
1106                                                                &fujitsubl_ops,
1107                                                                &props);
1108                 if (IS_ERR(fujitsu->bl_device)) {
1109                         ret = PTR_ERR(fujitsu->bl_device);
1110                         fujitsu->bl_device = NULL;
1111                         goto fail_sysfs_group;
1112                 }
1113                 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1114         }
1115 
1116         ret = platform_driver_register(&fujitsupf_driver);
1117         if (ret)
1118                 goto fail_backlight;
1119 
1120         /* Register hotkey driver */
1121 
1122         fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1123         if (!fujitsu_hotkey) {
1124                 ret = -ENOMEM;
1125                 goto fail_hotkey;
1126         }
1127 
1128         result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1129         if (result < 0) {
1130                 ret = -ENODEV;
1131                 goto fail_hotkey1;
1132         }
1133 
1134         /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1135 
1136         if (!acpi_video_backlight_support()) {
1137                 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1138                         fujitsu->bl_device->props.power = 4;
1139                 else
1140                         fujitsu->bl_device->props.power = 0;
1141         }
1142 
1143         pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1144 
1145         return 0;
1146 
1147 fail_hotkey1:
1148         kfree(fujitsu_hotkey);
1149 fail_hotkey:
1150         platform_driver_unregister(&fujitsupf_driver);
1151 fail_backlight:
1152         if (fujitsu->bl_device)
1153                 backlight_device_unregister(fujitsu->bl_device);
1154 fail_sysfs_group:
1155         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1156                            &fujitsupf_attribute_group);
1157 fail_platform_device2:
1158         platform_device_del(fujitsu->pf_device);
1159 fail_platform_device1:
1160         platform_device_put(fujitsu->pf_device);
1161 fail_platform_driver:
1162         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1163 fail_acpi:
1164         kfree(fujitsu);
1165 
1166         return ret;
1167 }
1168 
1169 static void __exit fujitsu_cleanup(void)
1170 {
1171         acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1172 
1173         kfree(fujitsu_hotkey);
1174 
1175         platform_driver_unregister(&fujitsupf_driver);
1176 
1177         if (fujitsu->bl_device)
1178                 backlight_device_unregister(fujitsu->bl_device);
1179 
1180         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1181                            &fujitsupf_attribute_group);
1182 
1183         platform_device_unregister(fujitsu->pf_device);
1184 
1185         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1186 
1187         kfree(fujitsu);
1188 
1189         pr_info("driver unloaded\n");
1190 }
1191 
1192 module_init(fujitsu_init);
1193 module_exit(fujitsu_cleanup);
1194 
1195 module_param(use_alt_lcd_levels, uint, 0644);
1196 MODULE_PARM_DESC(use_alt_lcd_levels,
1197                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1198 module_param(disable_brightness_adjust, uint, 0644);
1199 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1200 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1201 module_param_named(debug, dbg_level, uint, 0644);
1202 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1203 #endif
1204 
1205 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1206 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1207 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1208 MODULE_LICENSE("GPL");
1209 
1210 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1211 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1212 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1213 
1214 static struct pnp_device_id pnp_ids[] __used = {
1215         {.id = "FUJ02bf"},
1216         {.id = "FUJ02B1"},
1217         {.id = "FUJ02E3"},
1218         {.id = ""}
1219 };
1220 
1221 MODULE_DEVICE_TABLE(pnp, pnp_ids);
1222 

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