Version:  2.0.40 2.2.26 2.4.37 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 3.16 3.17

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

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