Version:  2.0.40 2.2.26 2.4.37 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 3.18 3.19

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                    }
563 };
564 
565 static void __init dmi_check_cb_common(const struct dmi_system_id *id)
566 {
567         pr_info("Identified laptop model '%s'\n", id->ident);
568         if (use_alt_lcd_levels == -1) {
569                 if (acpi_has_method(NULL,
570                                 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
571                         use_alt_lcd_levels = 1;
572                 else
573                         use_alt_lcd_levels = 0;
574                 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
575                         "%i\n", use_alt_lcd_levels);
576         }
577 }
578 
579 static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
580 {
581         dmi_check_cb_common(id);
582         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
583         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
584         return 1;
585 }
586 
587 static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
588 {
589         dmi_check_cb_common(id);
590         fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
591         fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
592         return 1;
593 }
594 
595 static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
596 {
597         dmi_check_cb_common(id);
598         fujitsu->keycode1 = KEY_HELP;   /* "Support" */
599         fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
600         fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
601         return 1;
602 }
603 
604 static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
605         {
606          .ident = "Fujitsu Siemens S6410",
607          .matches = {
608                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
609                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
610                      },
611          .callback = dmi_check_cb_s6410},
612         {
613          .ident = "Fujitsu Siemens S6420",
614          .matches = {
615                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
616                      DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
617                      },
618          .callback = dmi_check_cb_s6420},
619         {
620          .ident = "Fujitsu LifeBook P8010",
621          .matches = {
622                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
623                      DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
624                      },
625          .callback = dmi_check_cb_p8010},
626         {}
627 };
628 
629 /* ACPI device for LCD brightness control */
630 
631 static int acpi_fujitsu_add(struct acpi_device *device)
632 {
633         int state = 0;
634         struct input_dev *input;
635         int error;
636 
637         if (!device)
638                 return -EINVAL;
639 
640         fujitsu->acpi_handle = device->handle;
641         sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
642         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
643         device->driver_data = fujitsu;
644 
645         fujitsu->input = input = input_allocate_device();
646         if (!input) {
647                 error = -ENOMEM;
648                 goto err_stop;
649         }
650 
651         snprintf(fujitsu->phys, sizeof(fujitsu->phys),
652                  "%s/video/input0", acpi_device_hid(device));
653 
654         input->name = acpi_device_name(device);
655         input->phys = fujitsu->phys;
656         input->id.bustype = BUS_HOST;
657         input->id.product = 0x06;
658         input->dev.parent = &device->dev;
659         input->evbit[0] = BIT(EV_KEY);
660         set_bit(KEY_BRIGHTNESSUP, input->keybit);
661         set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
662         set_bit(KEY_UNKNOWN, input->keybit);
663 
664         error = input_register_device(input);
665         if (error)
666                 goto err_free_input_dev;
667 
668         error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
669         if (error) {
670                 pr_err("Error reading power state\n");
671                 goto err_unregister_input_dev;
672         }
673 
674         pr_info("ACPI: %s [%s] (%s)\n",
675                acpi_device_name(device), acpi_device_bid(device),
676                !device->power.state ? "on" : "off");
677 
678         fujitsu->dev = device;
679 
680         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
681                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
682                 if (ACPI_FAILURE
683                     (acpi_evaluate_object
684                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
685                         pr_err("_INI Method failed\n");
686         }
687 
688         /* do config (detect defaults) */
689         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
690         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
691         vdbg_printk(FUJLAPTOP_DBG_INFO,
692                     "config: [alt interface: %d], [adjust disable: %d]\n",
693                     use_alt_lcd_levels, disable_brightness_adjust);
694 
695         if (get_max_brightness() <= 0)
696                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
697         get_lcd_level();
698 
699         return 0;
700 
701 err_unregister_input_dev:
702         input_unregister_device(input);
703         input = NULL;
704 err_free_input_dev:
705         input_free_device(input);
706 err_stop:
707         return error;
708 }
709 
710 static int acpi_fujitsu_remove(struct acpi_device *device)
711 {
712         struct fujitsu_t *fujitsu = acpi_driver_data(device);
713         struct input_dev *input = fujitsu->input;
714 
715         input_unregister_device(input);
716 
717         fujitsu->acpi_handle = NULL;
718 
719         return 0;
720 }
721 
722 /* Brightness notify */
723 
724 static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
725 {
726         struct input_dev *input;
727         int keycode;
728         int oldb, newb;
729 
730         input = fujitsu->input;
731 
732         switch (event) {
733         case ACPI_FUJITSU_NOTIFY_CODE1:
734                 keycode = 0;
735                 oldb = fujitsu->brightness_level;
736                 get_lcd_level();
737                 newb = fujitsu->brightness_level;
738 
739                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
740                             "brightness button event [%i -> %i (%i)]\n",
741                             oldb, newb, fujitsu->brightness_changed);
742 
743                 if (oldb < newb) {
744                         if (disable_brightness_adjust != 1) {
745                                 if (use_alt_lcd_levels)
746                                         set_lcd_level_alt(newb);
747                                 else
748                                         set_lcd_level(newb);
749                         }
750                         keycode = KEY_BRIGHTNESSUP;
751                 } else if (oldb > newb) {
752                         if (disable_brightness_adjust != 1) {
753                                 if (use_alt_lcd_levels)
754                                         set_lcd_level_alt(newb);
755                                 else
756                                         set_lcd_level(newb);
757                         }
758                         keycode = KEY_BRIGHTNESSDOWN;
759                 }
760                 break;
761         default:
762                 keycode = KEY_UNKNOWN;
763                 vdbg_printk(FUJLAPTOP_DBG_WARN,
764                             "unsupported event [0x%x]\n", event);
765                 break;
766         }
767 
768         if (keycode != 0) {
769                 input_report_key(input, keycode, 1);
770                 input_sync(input);
771                 input_report_key(input, keycode, 0);
772                 input_sync(input);
773         }
774 }
775 
776 /* ACPI device for hotkey handling */
777 
778 static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
779 {
780         int result = 0;
781         int state = 0;
782         struct input_dev *input;
783         int error;
784         int i;
785 
786         if (!device)
787                 return -EINVAL;
788 
789         fujitsu_hotkey->acpi_handle = device->handle;
790         sprintf(acpi_device_name(device), "%s",
791                 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
792         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
793         device->driver_data = fujitsu_hotkey;
794 
795         /* kfifo */
796         spin_lock_init(&fujitsu_hotkey->fifo_lock);
797         error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
798                         GFP_KERNEL);
799         if (error) {
800                 pr_err("kfifo_alloc failed\n");
801                 goto err_stop;
802         }
803 
804         fujitsu_hotkey->input = input = input_allocate_device();
805         if (!input) {
806                 error = -ENOMEM;
807                 goto err_free_fifo;
808         }
809 
810         snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
811                  "%s/video/input0", acpi_device_hid(device));
812 
813         input->name = acpi_device_name(device);
814         input->phys = fujitsu_hotkey->phys;
815         input->id.bustype = BUS_HOST;
816         input->id.product = 0x06;
817         input->dev.parent = &device->dev;
818 
819         set_bit(EV_KEY, input->evbit);
820         set_bit(fujitsu->keycode1, input->keybit);
821         set_bit(fujitsu->keycode2, input->keybit);
822         set_bit(fujitsu->keycode3, input->keybit);
823         set_bit(fujitsu->keycode4, input->keybit);
824         set_bit(KEY_UNKNOWN, input->keybit);
825 
826         error = input_register_device(input);
827         if (error)
828                 goto err_free_input_dev;
829 
830         error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
831         if (error) {
832                 pr_err("Error reading power state\n");
833                 goto err_unregister_input_dev;
834         }
835 
836         pr_info("ACPI: %s [%s] (%s)\n",
837                 acpi_device_name(device), acpi_device_bid(device),
838                 !device->power.state ? "on" : "off");
839 
840         fujitsu_hotkey->dev = device;
841 
842         if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
843                 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
844                 if (ACPI_FAILURE
845                     (acpi_evaluate_object
846                      (device->handle, METHOD_NAME__INI, NULL, NULL)))
847                         pr_err("_INI Method failed\n");
848         }
849 
850         i = 0;
851         while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
852                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
853                 ; /* No action, result is discarded */
854         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
855 
856         fujitsu_hotkey->rfkill_supported =
857                 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
858 
859         /* Make sure our bitmask of supported functions is cleared if the
860            RFKILL function block is not implemented, like on the S7020. */
861         if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
862                 fujitsu_hotkey->rfkill_supported = 0;
863 
864         if (fujitsu_hotkey->rfkill_supported)
865                 fujitsu_hotkey->rfkill_state =
866                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
867 
868         /* Suspect this is a keymap of the application panel, print it */
869         pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
870 
871 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
872         if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
873                 result = led_classdev_register(&fujitsu->pf_device->dev,
874                                                 &logolamp_led);
875                 if (result == 0) {
876                         fujitsu_hotkey->logolamp_registered = 1;
877                 } else {
878                         pr_err("Could not register LED handler for logo lamp, error %i\n",
879                                result);
880                 }
881         }
882 
883         if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
884            (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
885                 result = led_classdev_register(&fujitsu->pf_device->dev,
886                                                 &kblamps_led);
887                 if (result == 0) {
888                         fujitsu_hotkey->kblamps_registered = 1;
889                 } else {
890                         pr_err("Could not register LED handler for keyboard lamps, error %i\n",
891                                result);
892                 }
893         }
894 #endif
895 
896         return result;
897 
898 err_unregister_input_dev:
899         input_unregister_device(input);
900         input = NULL;
901 err_free_input_dev:
902         input_free_device(input);
903 err_free_fifo:
904         kfifo_free(&fujitsu_hotkey->fifo);
905 err_stop:
906         return error;
907 }
908 
909 static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
910 {
911         struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
912         struct input_dev *input = fujitsu_hotkey->input;
913 
914 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
915         if (fujitsu_hotkey->logolamp_registered)
916                 led_classdev_unregister(&logolamp_led);
917 
918         if (fujitsu_hotkey->kblamps_registered)
919                 led_classdev_unregister(&kblamps_led);
920 #endif
921 
922         input_unregister_device(input);
923 
924         kfifo_free(&fujitsu_hotkey->fifo);
925 
926         fujitsu_hotkey->acpi_handle = NULL;
927 
928         return 0;
929 }
930 
931 static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
932 {
933         struct input_dev *input;
934         int keycode, keycode_r;
935         unsigned int irb = 1;
936         int i, status;
937 
938         input = fujitsu_hotkey->input;
939 
940         if (fujitsu_hotkey->rfkill_supported)
941                 fujitsu_hotkey->rfkill_state =
942                         call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
943 
944         switch (event) {
945         case ACPI_FUJITSU_NOTIFY_CODE1:
946                 i = 0;
947                 while ((irb =
948                         call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
949                                 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
950                         switch (irb & 0x4ff) {
951                         case KEY1_CODE:
952                                 keycode = fujitsu->keycode1;
953                                 break;
954                         case KEY2_CODE:
955                                 keycode = fujitsu->keycode2;
956                                 break;
957                         case KEY3_CODE:
958                                 keycode = fujitsu->keycode3;
959                                 break;
960                         case KEY4_CODE:
961                                 keycode = fujitsu->keycode4;
962                                 break;
963                         case 0:
964                                 keycode = 0;
965                                 break;
966                         default:
967                                 vdbg_printk(FUJLAPTOP_DBG_WARN,
968                                             "Unknown GIRB result [%x]\n", irb);
969                                 keycode = -1;
970                                 break;
971                         }
972                         if (keycode > 0) {
973                                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
974                                         "Push keycode into ringbuffer [%d]\n",
975                                         keycode);
976                                 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
977                                                    (unsigned char *)&keycode,
978                                                    sizeof(keycode),
979                                                    &fujitsu_hotkey->fifo_lock);
980                                 if (status != sizeof(keycode)) {
981                                         vdbg_printk(FUJLAPTOP_DBG_WARN,
982                                             "Could not push keycode [0x%x]\n",
983                                             keycode);
984                                 } else {
985                                         input_report_key(input, keycode, 1);
986                                         input_sync(input);
987                                 }
988                         } else if (keycode == 0) {
989                                 while ((status =
990                                         kfifo_out_locked(
991                                          &fujitsu_hotkey->fifo,
992                                          (unsigned char *) &keycode_r,
993                                          sizeof(keycode_r),
994                                          &fujitsu_hotkey->fifo_lock))
995                                          == sizeof(keycode_r)) {
996                                         input_report_key(input, keycode_r, 0);
997                                         input_sync(input);
998                                         vdbg_printk(FUJLAPTOP_DBG_TRACE,
999                                           "Pop keycode from ringbuffer [%d]\n",
1000                                           keycode_r);
1001                                 }
1002                         }
1003                 }
1004 
1005                 break;
1006         default:
1007                 keycode = KEY_UNKNOWN;
1008                 vdbg_printk(FUJLAPTOP_DBG_WARN,
1009                             "Unsupported event [0x%x]\n", event);
1010                 input_report_key(input, keycode, 1);
1011                 input_sync(input);
1012                 input_report_key(input, keycode, 0);
1013                 input_sync(input);
1014                 break;
1015         }
1016 }
1017 
1018 /* Initialization */
1019 
1020 static const struct acpi_device_id fujitsu_device_ids[] = {
1021         {ACPI_FUJITSU_HID, 0},
1022         {"", 0},
1023 };
1024 
1025 static struct acpi_driver acpi_fujitsu_driver = {
1026         .name = ACPI_FUJITSU_DRIVER_NAME,
1027         .class = ACPI_FUJITSU_CLASS,
1028         .ids = fujitsu_device_ids,
1029         .ops = {
1030                 .add = acpi_fujitsu_add,
1031                 .remove = acpi_fujitsu_remove,
1032                 .notify = acpi_fujitsu_notify,
1033                 },
1034 };
1035 
1036 static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1037         {ACPI_FUJITSU_HOTKEY_HID, 0},
1038         {"", 0},
1039 };
1040 
1041 static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1042         .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1043         .class = ACPI_FUJITSU_CLASS,
1044         .ids = fujitsu_hotkey_device_ids,
1045         .ops = {
1046                 .add = acpi_fujitsu_hotkey_add,
1047                 .remove = acpi_fujitsu_hotkey_remove,
1048                 .notify = acpi_fujitsu_hotkey_notify,
1049                 },
1050 };
1051 
1052 static const struct acpi_device_id fujitsu_ids[] __used = {
1053         {ACPI_FUJITSU_HID, 0},
1054         {ACPI_FUJITSU_HOTKEY_HID, 0},
1055         {"", 0}
1056 };
1057 MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1058 
1059 static int __init fujitsu_init(void)
1060 {
1061         int ret, result, max_brightness;
1062 
1063         if (acpi_disabled)
1064                 return -ENODEV;
1065 
1066         fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1067         if (!fujitsu)
1068                 return -ENOMEM;
1069         fujitsu->keycode1 = KEY_PROG1;
1070         fujitsu->keycode2 = KEY_PROG2;
1071         fujitsu->keycode3 = KEY_PROG3;
1072         fujitsu->keycode4 = KEY_PROG4;
1073         dmi_check_system(fujitsu_dmi_table);
1074 
1075         result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1076         if (result < 0) {
1077                 ret = -ENODEV;
1078                 goto fail_acpi;
1079         }
1080 
1081         /* Register platform stuff */
1082 
1083         fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1084         if (!fujitsu->pf_device) {
1085                 ret = -ENOMEM;
1086                 goto fail_platform_driver;
1087         }
1088 
1089         ret = platform_device_add(fujitsu->pf_device);
1090         if (ret)
1091                 goto fail_platform_device1;
1092 
1093         ret =
1094             sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1095                                &fujitsupf_attribute_group);
1096         if (ret)
1097                 goto fail_platform_device2;
1098 
1099         /* Register backlight stuff */
1100 
1101         if (!acpi_video_backlight_support()) {
1102                 struct backlight_properties props;
1103 
1104                 memset(&props, 0, sizeof(struct backlight_properties));
1105                 max_brightness = fujitsu->max_brightness;
1106                 props.type = BACKLIGHT_PLATFORM;
1107                 props.max_brightness = max_brightness - 1;
1108                 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1109                                                                NULL, NULL,
1110                                                                &fujitsubl_ops,
1111                                                                &props);
1112                 if (IS_ERR(fujitsu->bl_device)) {
1113                         ret = PTR_ERR(fujitsu->bl_device);
1114                         fujitsu->bl_device = NULL;
1115                         goto fail_sysfs_group;
1116                 }
1117                 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1118         }
1119 
1120         ret = platform_driver_register(&fujitsupf_driver);
1121         if (ret)
1122                 goto fail_backlight;
1123 
1124         /* Register hotkey driver */
1125 
1126         fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1127         if (!fujitsu_hotkey) {
1128                 ret = -ENOMEM;
1129                 goto fail_hotkey;
1130         }
1131 
1132         result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1133         if (result < 0) {
1134                 ret = -ENODEV;
1135                 goto fail_hotkey1;
1136         }
1137 
1138         /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1139 
1140         if (!acpi_video_backlight_support()) {
1141                 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1142                         fujitsu->bl_device->props.power = 4;
1143                 else
1144                         fujitsu->bl_device->props.power = 0;
1145         }
1146 
1147         pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1148 
1149         return 0;
1150 
1151 fail_hotkey1:
1152         kfree(fujitsu_hotkey);
1153 fail_hotkey:
1154         platform_driver_unregister(&fujitsupf_driver);
1155 fail_backlight:
1156         backlight_device_unregister(fujitsu->bl_device);
1157 fail_sysfs_group:
1158         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1159                            &fujitsupf_attribute_group);
1160 fail_platform_device2:
1161         platform_device_del(fujitsu->pf_device);
1162 fail_platform_device1:
1163         platform_device_put(fujitsu->pf_device);
1164 fail_platform_driver:
1165         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1166 fail_acpi:
1167         kfree(fujitsu);
1168 
1169         return ret;
1170 }
1171 
1172 static void __exit fujitsu_cleanup(void)
1173 {
1174         acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1175 
1176         kfree(fujitsu_hotkey);
1177 
1178         platform_driver_unregister(&fujitsupf_driver);
1179 
1180         backlight_device_unregister(fujitsu->bl_device);
1181 
1182         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1183                            &fujitsupf_attribute_group);
1184 
1185         platform_device_unregister(fujitsu->pf_device);
1186 
1187         acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1188 
1189         kfree(fujitsu);
1190 
1191         pr_info("driver unloaded\n");
1192 }
1193 
1194 module_init(fujitsu_init);
1195 module_exit(fujitsu_cleanup);
1196 
1197 module_param(use_alt_lcd_levels, uint, 0644);
1198 MODULE_PARM_DESC(use_alt_lcd_levels,
1199                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1200 module_param(disable_brightness_adjust, uint, 0644);
1201 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1202 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1203 module_param_named(debug, dbg_level, uint, 0644);
1204 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1205 #endif
1206 
1207 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1208 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1209 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1210 MODULE_LICENSE("GPL");
1211 
1212 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1213 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1214 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1215 

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