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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/fb.h>
68#include <linux/input.h>
69#include <linux/kfifo.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#include <acpi/video.h>
76
77#define FUJITSU_DRIVER_VERSION "0.6.0"
78
79#define FUJITSU_LCD_N_LEVELS 8
80
81#define ACPI_FUJITSU_CLASS "fujitsu"
82#define ACPI_FUJITSU_HID "FUJ02B1"
83#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
84#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
85#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
86#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
87#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
88
89#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
90
91#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
92#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
93
94/* FUNC interface - command values */
95#define FUNC_RFKILL 0x1000
96#define FUNC_LEDS 0x1001
97#define FUNC_BUTTONS 0x1002
98#define FUNC_BACKLIGHT 0x1004
99
100/* FUNC interface - responses */
101#define UNSUPPORTED_CMD 0x80000000
102
103#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
104/* FUNC interface - LED control */
105#define FUNC_LED_OFF 0x1
106#define FUNC_LED_ON 0x30001
107#define KEYBOARD_LAMPS 0x100
108#define LOGOLAMP_POWERON 0x2000
109#define LOGOLAMP_ALWAYS 0x4000
110#endif
111
112/* Hotkey details */
113#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
114#define KEY2_CODE 0x411
115#define KEY3_CODE 0x412
116#define KEY4_CODE 0x413
117#define KEY5_CODE 0x420
118
119#define MAX_HOTKEY_RINGBUFFER_SIZE 100
120#define RINGBUFFERSIZE 40
121
122/* Debugging */
123#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
124#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
125#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
126#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
127#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
128
129#define FUJLAPTOP_DBG_ALL 0xffff
130#define FUJLAPTOP_DBG_ERROR 0x0001
131#define FUJLAPTOP_DBG_WARN 0x0002
132#define FUJLAPTOP_DBG_INFO 0x0004
133#define FUJLAPTOP_DBG_TRACE 0x0008
134
135#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
136#define vdbg_printk(a_dbg_level, format, arg...) \
137 do { if (dbg_level & a_dbg_level) \
138 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
139 } while (0)
140#else
141#define vdbg_printk(a_dbg_level, format, arg...) \
142 do { } while (0)
143#endif
144
145/* Device controlling the backlight and associated keys */
146struct fujitsu_t {
147 acpi_handle acpi_handle;
148 struct acpi_device *dev;
149 struct input_dev *input;
150 char phys[32];
151 struct backlight_device *bl_device;
152 struct platform_device *pf_device;
153 int keycode1, keycode2, keycode3, keycode4, keycode5;
154
155 unsigned int max_brightness;
156 unsigned int brightness_changed;
157 unsigned int brightness_level;
158};
159
160static struct fujitsu_t *fujitsu;
161static int use_alt_lcd_levels = -1;
162static int disable_brightness_adjust = -1;
163
164/* Device used to access other hotkeys on the laptop */
165struct fujitsu_hotkey_t {
166 acpi_handle acpi_handle;
167 struct acpi_device *dev;
168 struct input_dev *input;
169 char phys[32];
170 struct platform_device *pf_device;
171 struct kfifo fifo;
172 spinlock_t fifo_lock;
173 int rfkill_supported;
174 int rfkill_state;
175 int logolamp_registered;
176 int kblamps_registered;
177};
178
179static struct fujitsu_hotkey_t *fujitsu_hotkey;
180
181static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
182
183#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
184static enum led_brightness logolamp_get(struct led_classdev *cdev);
185static void logolamp_set(struct led_classdev *cdev,
186 enum led_brightness brightness);
187
188static struct led_classdev logolamp_led = {
189 .name = "fujitsu::logolamp",
190 .brightness_get = logolamp_get,
191 .brightness_set = logolamp_set
192};
193
194static enum led_brightness kblamps_get(struct led_classdev *cdev);
195static void kblamps_set(struct led_classdev *cdev,
196 enum led_brightness brightness);
197
198static struct led_classdev kblamps_led = {
199 .name = "fujitsu::kblamps",
200 .brightness_get = kblamps_get,
201 .brightness_set = kblamps_set
202};
203#endif
204
205#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
206static u32 dbg_level = 0x03;
207#endif
208
209static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
210
211/* Fujitsu ACPI interface function */
212
213static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
214{
215 acpi_status status = AE_OK;
216 union acpi_object params[4] = {
217 { .type = ACPI_TYPE_INTEGER },
218 { .type = ACPI_TYPE_INTEGER },
219 { .type = ACPI_TYPE_INTEGER },
220 { .type = ACPI_TYPE_INTEGER }
221 };
222 struct acpi_object_list arg_list = { 4, ¶ms[0] };
223 unsigned long long value;
224 acpi_handle handle = NULL;
225
226 status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
227 if (ACPI_FAILURE(status)) {
228 vdbg_printk(FUJLAPTOP_DBG_ERROR,
229 "FUNC interface is not present\n");
230 return -ENODEV;
231 }
232
233 params[0].integer.value = cmd;
234 params[1].integer.value = arg0;
235 params[2].integer.value = arg1;
236 params[3].integer.value = arg2;
237
238 status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
239 if (ACPI_FAILURE(status)) {
240 vdbg_printk(FUJLAPTOP_DBG_WARN,
241 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
242 cmd, arg0, arg1, arg2);
243 return -ENODEV;
244 }
245
246 vdbg_printk(FUJLAPTOP_DBG_TRACE,
247 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
248 cmd, arg0, arg1, arg2, (int)value);
249 return value;
250}
251
252#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
253/* LED class callbacks */
254
255static void logolamp_set(struct led_classdev *cdev,
256 enum led_brightness brightness)
257{
258 if (brightness >= LED_FULL) {
259 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
260 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
261 } else if (brightness >= LED_HALF) {
262 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
263 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
264 } else {
265 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
266 }
267}
268
269static void kblamps_set(struct led_classdev *cdev,
270 enum led_brightness brightness)
271{
272 if (brightness >= LED_FULL)
273 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
274 else
275 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
276}
277
278static enum led_brightness logolamp_get(struct led_classdev *cdev)
279{
280 enum led_brightness brightness = LED_OFF;
281 int poweron, always;
282
283 poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
284 if (poweron == FUNC_LED_ON) {
285 brightness = LED_HALF;
286 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
287 if (always == FUNC_LED_ON)
288 brightness = LED_FULL;
289 }
290 return brightness;
291}
292
293static enum led_brightness kblamps_get(struct led_classdev *cdev)
294{
295 enum led_brightness brightness = LED_OFF;
296
297 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
298 brightness = LED_FULL;
299
300 return brightness;
301}
302#endif
303
304/* Hardware access for LCD brightness control */
305
306static int set_lcd_level(int level)
307{
308 acpi_status status = AE_OK;
309 acpi_handle handle = NULL;
310
311 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
312 level);
313
314 if (level < 0 || level >= fujitsu->max_brightness)
315 return -EINVAL;
316
317 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
318 if (ACPI_FAILURE(status)) {
319 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
320 return -ENODEV;
321 }
322
323
324 status = acpi_execute_simple_method(handle, NULL, level);
325 if (ACPI_FAILURE(status))
326 return -ENODEV;
327
328 return 0;
329}
330
331static int set_lcd_level_alt(int level)
332{
333 acpi_status status = AE_OK;
334 acpi_handle handle = NULL;
335
336 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
337 level);
338
339 if (level < 0 || level >= fujitsu->max_brightness)
340 return -EINVAL;
341
342 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
343 if (ACPI_FAILURE(status)) {
344 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
345 return -ENODEV;
346 }
347
348 status = acpi_execute_simple_method(handle, NULL, level);
349 if (ACPI_FAILURE(status))
350 return -ENODEV;
351
352 return 0;
353}
354
355static int get_lcd_level(void)
356{
357 unsigned long long state = 0;
358 acpi_status status = AE_OK;
359
360 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
361
362 status =
363 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
364 if (ACPI_FAILURE(status))
365 return 0;
366
367 fujitsu->brightness_level = state & 0x0fffffff;
368
369 if (state & 0x80000000)
370 fujitsu->brightness_changed = 1;
371 else
372 fujitsu->brightness_changed = 0;
373
374 return fujitsu->brightness_level;
375}
376
377static int get_max_brightness(void)
378{
379 unsigned long long state = 0;
380 acpi_status status = AE_OK;
381
382 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
383
384 status =
385 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
386 if (ACPI_FAILURE(status))
387 return -1;
388
389 fujitsu->max_brightness = state;
390
391 return fujitsu->max_brightness;
392}
393
394/* Backlight device stuff */
395
396static int bl_get_brightness(struct backlight_device *b)
397{
398 return get_lcd_level();
399}
400
401static int bl_update_status(struct backlight_device *b)
402{
403 int ret;
404 if (b->props.power == FB_BLANK_POWERDOWN)
405 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
406 else
407 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
408 if (ret != 0)
409 vdbg_printk(FUJLAPTOP_DBG_ERROR,
410 "Unable to adjust backlight power, error code %i\n",
411 ret);
412
413 if (use_alt_lcd_levels)
414 ret = set_lcd_level_alt(b->props.brightness);
415 else
416 ret = set_lcd_level(b->props.brightness);
417 if (ret != 0)
418 vdbg_printk(FUJLAPTOP_DBG_ERROR,
419 "Unable to adjust LCD brightness, error code %i\n",
420 ret);
421 return ret;
422}
423
424static const struct backlight_ops fujitsubl_ops = {
425 .get_brightness = bl_get_brightness,
426 .update_status = bl_update_status,
427};
428
429/* Platform LCD brightness device */
430
431static ssize_t
432show_max_brightness(struct device *dev,
433 struct device_attribute *attr, char *buf)
434{
435
436 int ret;
437
438 ret = get_max_brightness();
439 if (ret < 0)
440 return ret;
441
442 return sprintf(buf, "%i\n", ret);
443}
444
445static ssize_t
446show_brightness_changed(struct device *dev,
447 struct device_attribute *attr, char *buf)
448{
449
450 int ret;
451
452 ret = fujitsu->brightness_changed;
453 if (ret < 0)
454 return ret;
455
456 return sprintf(buf, "%i\n", ret);
457}
458
459static ssize_t show_lcd_level(struct device *dev,
460 struct device_attribute *attr, char *buf)
461{
462
463 int ret;
464
465 ret = get_lcd_level();
466 if (ret < 0)
467 return ret;
468
469 return sprintf(buf, "%i\n", ret);
470}
471
472static ssize_t store_lcd_level(struct device *dev,
473 struct device_attribute *attr, const char *buf,
474 size_t count)
475{
476
477 int level, ret;
478
479 if (sscanf(buf, "%i", &level) != 1
480 || (level < 0 || level >= fujitsu->max_brightness))
481 return -EINVAL;
482
483 if (use_alt_lcd_levels)
484 ret = set_lcd_level_alt(level);
485 else
486 ret = set_lcd_level(level);
487 if (ret < 0)
488 return ret;
489
490 ret = get_lcd_level();
491 if (ret < 0)
492 return ret;
493
494 return count;
495}
496
497static ssize_t
498ignore_store(struct device *dev,
499 struct device_attribute *attr, const char *buf, size_t count)
500{
501 return count;
502}
503
504static ssize_t
505show_lid_state(struct device *dev,
506 struct device_attribute *attr, char *buf)
507{
508 if (!(fujitsu_hotkey->rfkill_supported & 0x100))
509 return sprintf(buf, "unknown\n");
510 if (fujitsu_hotkey->rfkill_state & 0x100)
511 return sprintf(buf, "open\n");
512 else
513 return sprintf(buf, "closed\n");
514}
515
516static ssize_t
517show_dock_state(struct device *dev,
518 struct device_attribute *attr, char *buf)
519{
520 if (!(fujitsu_hotkey->rfkill_supported & 0x200))
521 return sprintf(buf, "unknown\n");
522 if (fujitsu_hotkey->rfkill_state & 0x200)
523 return sprintf(buf, "docked\n");
524 else
525 return sprintf(buf, "undocked\n");
526}
527
528static ssize_t
529show_radios_state(struct device *dev,
530 struct device_attribute *attr, char *buf)
531{
532 if (!(fujitsu_hotkey->rfkill_supported & 0x20))
533 return sprintf(buf, "unknown\n");
534 if (fujitsu_hotkey->rfkill_state & 0x20)
535 return sprintf(buf, "on\n");
536 else
537 return sprintf(buf, "killed\n");
538}
539
540static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
541static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
542 ignore_store);
543static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
544static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
545static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
546static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
547
548static struct attribute *fujitsupf_attributes[] = {
549 &dev_attr_brightness_changed.attr,
550 &dev_attr_max_brightness.attr,
551 &dev_attr_lcd_level.attr,
552 &dev_attr_lid.attr,
553 &dev_attr_dock.attr,
554 &dev_attr_radios.attr,
555 NULL
556};
557
558static struct attribute_group fujitsupf_attribute_group = {
559 .attrs = fujitsupf_attributes
560};
561
562static struct platform_driver fujitsupf_driver = {
563 .driver = {
564 .name = "fujitsu-laptop",
565 }
566};
567
568static void __init 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
582static int __init 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
590static int __init 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
598static int __init 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
607static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
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
634static 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
704err_unregister_input_dev:
705 input_unregister_device(input);
706 input = NULL;
707err_free_input_dev:
708 input_free_device(input);
709err_stop:
710 return error;
711}
712
713static 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
727static 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
781static 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(fujitsu->keycode5, input->keybit);
828 set_bit(KEY_UNKNOWN, input->keybit);
829
830 error = input_register_device(input);
831 if (error)
832 goto err_free_input_dev;
833
834 error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
835 if (error) {
836 pr_err("Error reading power state\n");
837 goto err_unregister_input_dev;
838 }
839
840 pr_info("ACPI: %s [%s] (%s)\n",
841 acpi_device_name(device), acpi_device_bid(device),
842 !device->power.state ? "on" : "off");
843
844 fujitsu_hotkey->dev = device;
845
846 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
847 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
848 if (ACPI_FAILURE
849 (acpi_evaluate_object
850 (device->handle, METHOD_NAME__INI, NULL, NULL)))
851 pr_err("_INI Method failed\n");
852 }
853
854 i = 0;
855 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
856 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
857 ; /* No action, result is discarded */
858 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
859
860 fujitsu_hotkey->rfkill_supported =
861 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
862
863 /* Make sure our bitmask of supported functions is cleared if the
864 RFKILL function block is not implemented, like on the S7020. */
865 if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
866 fujitsu_hotkey->rfkill_supported = 0;
867
868 if (fujitsu_hotkey->rfkill_supported)
869 fujitsu_hotkey->rfkill_state =
870 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
871
872 /* Suspect this is a keymap of the application panel, print it */
873 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
874
875#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
876 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
877 result = led_classdev_register(&fujitsu->pf_device->dev,
878 &logolamp_led);
879 if (result == 0) {
880 fujitsu_hotkey->logolamp_registered = 1;
881 } else {
882 pr_err("Could not register LED handler for logo lamp, error %i\n",
883 result);
884 }
885 }
886
887 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
888 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
889 result = led_classdev_register(&fujitsu->pf_device->dev,
890 &kblamps_led);
891 if (result == 0) {
892 fujitsu_hotkey->kblamps_registered = 1;
893 } else {
894 pr_err("Could not register LED handler for keyboard lamps, error %i\n",
895 result);
896 }
897 }
898#endif
899
900 return result;
901
902err_unregister_input_dev:
903 input_unregister_device(input);
904 input = NULL;
905err_free_input_dev:
906 input_free_device(input);
907err_free_fifo:
908 kfifo_free(&fujitsu_hotkey->fifo);
909err_stop:
910 return error;
911}
912
913static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
914{
915 struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
916 struct input_dev *input = fujitsu_hotkey->input;
917
918#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
919 if (fujitsu_hotkey->logolamp_registered)
920 led_classdev_unregister(&logolamp_led);
921
922 if (fujitsu_hotkey->kblamps_registered)
923 led_classdev_unregister(&kblamps_led);
924#endif
925
926 input_unregister_device(input);
927
928 kfifo_free(&fujitsu_hotkey->fifo);
929
930 fujitsu_hotkey->acpi_handle = NULL;
931
932 return 0;
933}
934
935static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
936{
937 struct input_dev *input;
938 int keycode, keycode_r;
939 unsigned int irb = 1;
940 int i, status;
941
942 input = fujitsu_hotkey->input;
943
944 if (fujitsu_hotkey->rfkill_supported)
945 fujitsu_hotkey->rfkill_state =
946 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
947
948 switch (event) {
949 case ACPI_FUJITSU_NOTIFY_CODE1:
950 i = 0;
951 while ((irb =
952 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
953 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
954 switch (irb & 0x4ff) {
955 case KEY1_CODE:
956 keycode = fujitsu->keycode1;
957 break;
958 case KEY2_CODE:
959 keycode = fujitsu->keycode2;
960 break;
961 case KEY3_CODE:
962 keycode = fujitsu->keycode3;
963 break;
964 case KEY4_CODE:
965 keycode = fujitsu->keycode4;
966 break;
967 case KEY5_CODE:
968 keycode = fujitsu->keycode5;
969 break;
970 case 0:
971 keycode = 0;
972 break;
973 default:
974 vdbg_printk(FUJLAPTOP_DBG_WARN,
975 "Unknown GIRB result [%x]\n", irb);
976 keycode = -1;
977 break;
978 }
979 if (keycode > 0) {
980 vdbg_printk(FUJLAPTOP_DBG_TRACE,
981 "Push keycode into ringbuffer [%d]\n",
982 keycode);
983 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
984 (unsigned char *)&keycode,
985 sizeof(keycode),
986 &fujitsu_hotkey->fifo_lock);
987 if (status != sizeof(keycode)) {
988 vdbg_printk(FUJLAPTOP_DBG_WARN,
989 "Could not push keycode [0x%x]\n",
990 keycode);
991 } else {
992 input_report_key(input, keycode, 1);
993 input_sync(input);
994 }
995 } else if (keycode == 0) {
996 while ((status =
997 kfifo_out_locked(
998 &fujitsu_hotkey->fifo,
999 (unsigned char *) &keycode_r,
1000 sizeof(keycode_r),
1001 &fujitsu_hotkey->fifo_lock))
1002 == sizeof(keycode_r)) {
1003 input_report_key(input, keycode_r, 0);
1004 input_sync(input);
1005 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1006 "Pop keycode from ringbuffer [%d]\n",
1007 keycode_r);
1008 }
1009 }
1010 }
1011
1012 break;
1013 default:
1014 keycode = KEY_UNKNOWN;
1015 vdbg_printk(FUJLAPTOP_DBG_WARN,
1016 "Unsupported event [0x%x]\n", event);
1017 input_report_key(input, keycode, 1);
1018 input_sync(input);
1019 input_report_key(input, keycode, 0);
1020 input_sync(input);
1021 break;
1022 }
1023}
1024
1025/* Initialization */
1026
1027static const struct acpi_device_id fujitsu_device_ids[] = {
1028 {ACPI_FUJITSU_HID, 0},
1029 {"", 0},
1030};
1031
1032static struct acpi_driver acpi_fujitsu_driver = {
1033 .name = ACPI_FUJITSU_DRIVER_NAME,
1034 .class = ACPI_FUJITSU_CLASS,
1035 .ids = fujitsu_device_ids,
1036 .ops = {
1037 .add = acpi_fujitsu_add,
1038 .remove = acpi_fujitsu_remove,
1039 .notify = acpi_fujitsu_notify,
1040 },
1041};
1042
1043static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1044 {ACPI_FUJITSU_HOTKEY_HID, 0},
1045 {"", 0},
1046};
1047
1048static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1049 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1050 .class = ACPI_FUJITSU_CLASS,
1051 .ids = fujitsu_hotkey_device_ids,
1052 .ops = {
1053 .add = acpi_fujitsu_hotkey_add,
1054 .remove = acpi_fujitsu_hotkey_remove,
1055 .notify = acpi_fujitsu_hotkey_notify,
1056 },
1057};
1058
1059static const struct acpi_device_id fujitsu_ids[] __used = {
1060 {ACPI_FUJITSU_HID, 0},
1061 {ACPI_FUJITSU_HOTKEY_HID, 0},
1062 {"", 0}
1063};
1064MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1065
1066static int __init fujitsu_init(void)
1067{
1068 int ret, result, max_brightness;
1069
1070 if (acpi_disabled)
1071 return -ENODEV;
1072
1073 fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1074 if (!fujitsu)
1075 return -ENOMEM;
1076 fujitsu->keycode1 = KEY_PROG1;
1077 fujitsu->keycode2 = KEY_PROG2;
1078 fujitsu->keycode3 = KEY_PROG3;
1079 fujitsu->keycode4 = KEY_PROG4;
1080 fujitsu->keycode5 = KEY_RFKILL;
1081 dmi_check_system(fujitsu_dmi_table);
1082
1083 result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1084 if (result < 0) {
1085 ret = -ENODEV;
1086 goto fail_acpi;
1087 }
1088
1089 /* Register platform stuff */
1090
1091 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1092 if (!fujitsu->pf_device) {
1093 ret = -ENOMEM;
1094 goto fail_platform_driver;
1095 }
1096
1097 ret = platform_device_add(fujitsu->pf_device);
1098 if (ret)
1099 goto fail_platform_device1;
1100
1101 ret =
1102 sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1103 &fujitsupf_attribute_group);
1104 if (ret)
1105 goto fail_platform_device2;
1106
1107 /* Register backlight stuff */
1108
1109 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1110 struct backlight_properties props;
1111
1112 memset(&props, 0, sizeof(struct backlight_properties));
1113 max_brightness = fujitsu->max_brightness;
1114 props.type = BACKLIGHT_PLATFORM;
1115 props.max_brightness = max_brightness - 1;
1116 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1117 NULL, NULL,
1118 &fujitsubl_ops,
1119 &props);
1120 if (IS_ERR(fujitsu->bl_device)) {
1121 ret = PTR_ERR(fujitsu->bl_device);
1122 fujitsu->bl_device = NULL;
1123 goto fail_sysfs_group;
1124 }
1125 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1126 }
1127
1128 ret = platform_driver_register(&fujitsupf_driver);
1129 if (ret)
1130 goto fail_backlight;
1131
1132 /* Register hotkey driver */
1133
1134 fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1135 if (!fujitsu_hotkey) {
1136 ret = -ENOMEM;
1137 goto fail_hotkey;
1138 }
1139
1140 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1141 if (result < 0) {
1142 ret = -ENODEV;
1143 goto fail_hotkey1;
1144 }
1145
1146 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1147 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1148 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1149 fujitsu->bl_device->props.power = FB_BLANK_POWERDOWN;
1150 else
1151 fujitsu->bl_device->props.power = FB_BLANK_UNBLANK;
1152 }
1153
1154 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1155
1156 return 0;
1157
1158fail_hotkey1:
1159 kfree(fujitsu_hotkey);
1160fail_hotkey:
1161 platform_driver_unregister(&fujitsupf_driver);
1162fail_backlight:
1163 backlight_device_unregister(fujitsu->bl_device);
1164fail_sysfs_group:
1165 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1166 &fujitsupf_attribute_group);
1167fail_platform_device2:
1168 platform_device_del(fujitsu->pf_device);
1169fail_platform_device1:
1170 platform_device_put(fujitsu->pf_device);
1171fail_platform_driver:
1172 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1173fail_acpi:
1174 kfree(fujitsu);
1175
1176 return ret;
1177}
1178
1179static void __exit fujitsu_cleanup(void)
1180{
1181 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1182
1183 kfree(fujitsu_hotkey);
1184
1185 platform_driver_unregister(&fujitsupf_driver);
1186
1187 backlight_device_unregister(fujitsu->bl_device);
1188
1189 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1190 &fujitsupf_attribute_group);
1191
1192 platform_device_unregister(fujitsu->pf_device);
1193
1194 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1195
1196 kfree(fujitsu);
1197
1198 pr_info("driver unloaded\n");
1199}
1200
1201module_init(fujitsu_init);
1202module_exit(fujitsu_cleanup);
1203
1204module_param(use_alt_lcd_levels, uint, 0644);
1205MODULE_PARM_DESC(use_alt_lcd_levels,
1206 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1207module_param(disable_brightness_adjust, uint, 0644);
1208MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1209#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1210module_param_named(debug, dbg_level, uint, 0644);
1211MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1212#endif
1213
1214MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1215MODULE_DESCRIPTION("Fujitsu laptop extras support");
1216MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1217MODULE_LICENSE("GPL");
1218
1219MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1220MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1221MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1/*-*-linux-c-*-*/
2
3/*
4 Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net>
5 Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
6 Copyright (C) 2008 Tony Vroon <tony@linx.net>
7 Based on earlier work:
8 Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
9 Adrian Yee <brewt-fujitsu@brewt.org>
10
11 Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
12 by its respective authors.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful, but
20 WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
27 02110-1301, USA.
28 */
29
30/*
31 * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
32 * features made available on a range of Fujitsu laptops including the
33 * P2xxx/P5xxx/S6xxx/S7xxx series.
34 *
35 * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/;
36 * others may be added at a later date.
37 *
38 * lcd_level - Screen brightness: contains a single integer in the
39 * range 0..7. (rw)
40 *
41 * In addition to these platform device attributes the driver
42 * registers itself in the Linux backlight control subsystem and is
43 * available to userspace under /sys/class/backlight/fujitsu-laptop/.
44 *
45 * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
46 * also supported by this driver.
47 *
48 * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
49 * P8010. It should work on most P-series and S-series Lifebooks, but
50 * YMMV.
51 *
52 * The module parameter use_alt_lcd_levels switches between different ACPI
53 * brightness controls which are used by different Fujitsu laptops. In most
54 * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
55 * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
56 *
57 */
58
59#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
60
61#include <linux/module.h>
62#include <linux/kernel.h>
63#include <linux/init.h>
64#include <linux/acpi.h>
65#include <linux/dmi.h>
66#include <linux/backlight.h>
67#include <linux/input.h>
68#include <linux/kfifo.h>
69#include <linux/platform_device.h>
70#include <linux/slab.h>
71#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
72#include <linux/leds.h>
73#endif
74
75#define FUJITSU_DRIVER_VERSION "0.6.0"
76
77#define FUJITSU_LCD_N_LEVELS 8
78
79#define ACPI_FUJITSU_CLASS "fujitsu"
80#define ACPI_FUJITSU_HID "FUJ02B1"
81#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
82#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
83#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
84#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
85#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
86
87#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
88
89#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
90#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
91
92/* FUNC interface - command values */
93#define FUNC_RFKILL 0x1000
94#define FUNC_LEDS 0x1001
95#define FUNC_BUTTONS 0x1002
96#define FUNC_BACKLIGHT 0x1004
97
98/* FUNC interface - responses */
99#define UNSUPPORTED_CMD 0x80000000
100
101#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
102/* FUNC interface - LED control */
103#define FUNC_LED_OFF 0x1
104#define FUNC_LED_ON 0x30001
105#define KEYBOARD_LAMPS 0x100
106#define LOGOLAMP_POWERON 0x2000
107#define LOGOLAMP_ALWAYS 0x4000
108#endif
109
110/* Hotkey details */
111#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
112#define KEY2_CODE 0x411
113#define KEY3_CODE 0x412
114#define KEY4_CODE 0x413
115
116#define MAX_HOTKEY_RINGBUFFER_SIZE 100
117#define RINGBUFFERSIZE 40
118
119/* Debugging */
120#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
121#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
122#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
123#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
124#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
125
126#define FUJLAPTOP_DBG_ALL 0xffff
127#define FUJLAPTOP_DBG_ERROR 0x0001
128#define FUJLAPTOP_DBG_WARN 0x0002
129#define FUJLAPTOP_DBG_INFO 0x0004
130#define FUJLAPTOP_DBG_TRACE 0x0008
131
132#define dbg_printk(a_dbg_level, format, arg...) \
133 do { if (dbg_level & a_dbg_level) \
134 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
135 } while (0)
136#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
137#define vdbg_printk(a_dbg_level, format, arg...) \
138 dbg_printk(a_dbg_level, format, ## arg)
139#else
140#define vdbg_printk(a_dbg_level, format, arg...)
141#endif
142
143/* Device controlling the backlight and associated keys */
144struct fujitsu_t {
145 acpi_handle acpi_handle;
146 struct acpi_device *dev;
147 struct input_dev *input;
148 char phys[32];
149 struct backlight_device *bl_device;
150 struct platform_device *pf_device;
151 int keycode1, keycode2, keycode3, keycode4;
152
153 unsigned int max_brightness;
154 unsigned int brightness_changed;
155 unsigned int brightness_level;
156};
157
158static struct fujitsu_t *fujitsu;
159static int use_alt_lcd_levels = -1;
160static int disable_brightness_adjust = -1;
161
162/* Device used to access other hotkeys on the laptop */
163struct fujitsu_hotkey_t {
164 acpi_handle acpi_handle;
165 struct acpi_device *dev;
166 struct input_dev *input;
167 char phys[32];
168 struct platform_device *pf_device;
169 struct kfifo fifo;
170 spinlock_t fifo_lock;
171 int rfkill_supported;
172 int rfkill_state;
173 int logolamp_registered;
174 int kblamps_registered;
175};
176
177static struct fujitsu_hotkey_t *fujitsu_hotkey;
178
179static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event);
180
181#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
182static enum led_brightness logolamp_get(struct led_classdev *cdev);
183static void logolamp_set(struct led_classdev *cdev,
184 enum led_brightness brightness);
185
186static struct led_classdev logolamp_led = {
187 .name = "fujitsu::logolamp",
188 .brightness_get = logolamp_get,
189 .brightness_set = logolamp_set
190};
191
192static enum led_brightness kblamps_get(struct led_classdev *cdev);
193static void kblamps_set(struct led_classdev *cdev,
194 enum led_brightness brightness);
195
196static struct led_classdev kblamps_led = {
197 .name = "fujitsu::kblamps",
198 .brightness_get = kblamps_get,
199 .brightness_set = kblamps_set
200};
201#endif
202
203#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
204static u32 dbg_level = 0x03;
205#endif
206
207static void acpi_fujitsu_notify(struct acpi_device *device, u32 event);
208
209/* Fujitsu ACPI interface function */
210
211static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
212{
213 acpi_status status = AE_OK;
214 union acpi_object params[4] = {
215 { .type = ACPI_TYPE_INTEGER },
216 { .type = ACPI_TYPE_INTEGER },
217 { .type = ACPI_TYPE_INTEGER },
218 { .type = ACPI_TYPE_INTEGER }
219 };
220 struct acpi_object_list arg_list = { 4, ¶ms[0] };
221 unsigned long long value;
222 acpi_handle handle = NULL;
223
224 status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
225 if (ACPI_FAILURE(status)) {
226 vdbg_printk(FUJLAPTOP_DBG_ERROR,
227 "FUNC interface is not present\n");
228 return -ENODEV;
229 }
230
231 params[0].integer.value = cmd;
232 params[1].integer.value = arg0;
233 params[2].integer.value = arg1;
234 params[3].integer.value = arg2;
235
236 status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
237 if (ACPI_FAILURE(status)) {
238 vdbg_printk(FUJLAPTOP_DBG_WARN,
239 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
240 cmd, arg0, arg1, arg2);
241 return -ENODEV;
242 }
243
244 vdbg_printk(FUJLAPTOP_DBG_TRACE,
245 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
246 cmd, arg0, arg1, arg2, (int)value);
247 return value;
248}
249
250#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
251/* LED class callbacks */
252
253static void logolamp_set(struct led_classdev *cdev,
254 enum led_brightness brightness)
255{
256 if (brightness >= LED_FULL) {
257 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
258 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
259 } else if (brightness >= LED_HALF) {
260 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
261 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
262 } else {
263 call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
264 }
265}
266
267static void kblamps_set(struct led_classdev *cdev,
268 enum led_brightness brightness)
269{
270 if (brightness >= LED_FULL)
271 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
272 else
273 call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
274}
275
276static enum led_brightness logolamp_get(struct led_classdev *cdev)
277{
278 enum led_brightness brightness = LED_OFF;
279 int poweron, always;
280
281 poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
282 if (poweron == FUNC_LED_ON) {
283 brightness = LED_HALF;
284 always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
285 if (always == FUNC_LED_ON)
286 brightness = LED_FULL;
287 }
288 return brightness;
289}
290
291static enum led_brightness kblamps_get(struct led_classdev *cdev)
292{
293 enum led_brightness brightness = LED_OFF;
294
295 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
296 brightness = LED_FULL;
297
298 return brightness;
299}
300#endif
301
302/* Hardware access for LCD brightness control */
303
304static int set_lcd_level(int level)
305{
306 acpi_status status = AE_OK;
307 acpi_handle handle = NULL;
308
309 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
310 level);
311
312 if (level < 0 || level >= fujitsu->max_brightness)
313 return -EINVAL;
314
315 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
316 if (ACPI_FAILURE(status)) {
317 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
318 return -ENODEV;
319 }
320
321
322 status = acpi_execute_simple_method(handle, NULL, level);
323 if (ACPI_FAILURE(status))
324 return -ENODEV;
325
326 return 0;
327}
328
329static int set_lcd_level_alt(int level)
330{
331 acpi_status status = AE_OK;
332 acpi_handle handle = NULL;
333
334 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
335 level);
336
337 if (level < 0 || level >= fujitsu->max_brightness)
338 return -EINVAL;
339
340 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
341 if (ACPI_FAILURE(status)) {
342 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
343 return -ENODEV;
344 }
345
346 status = acpi_execute_simple_method(handle, NULL, level);
347 if (ACPI_FAILURE(status))
348 return -ENODEV;
349
350 return 0;
351}
352
353static int get_lcd_level(void)
354{
355 unsigned long long state = 0;
356 acpi_status status = AE_OK;
357
358 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
359
360 status =
361 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
362 if (ACPI_FAILURE(status))
363 return 0;
364
365 fujitsu->brightness_level = state & 0x0fffffff;
366
367 if (state & 0x80000000)
368 fujitsu->brightness_changed = 1;
369 else
370 fujitsu->brightness_changed = 0;
371
372 return fujitsu->brightness_level;
373}
374
375static int get_max_brightness(void)
376{
377 unsigned long long state = 0;
378 acpi_status status = AE_OK;
379
380 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
381
382 status =
383 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
384 if (ACPI_FAILURE(status))
385 return -1;
386
387 fujitsu->max_brightness = state;
388
389 return fujitsu->max_brightness;
390}
391
392/* Backlight device stuff */
393
394static int bl_get_brightness(struct backlight_device *b)
395{
396 return get_lcd_level();
397}
398
399static int bl_update_status(struct backlight_device *b)
400{
401 int ret;
402 if (b->props.power == 4)
403 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
404 else
405 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
406 if (ret != 0)
407 vdbg_printk(FUJLAPTOP_DBG_ERROR,
408 "Unable to adjust backlight power, error code %i\n",
409 ret);
410
411 if (use_alt_lcd_levels)
412 ret = set_lcd_level_alt(b->props.brightness);
413 else
414 ret = set_lcd_level(b->props.brightness);
415 if (ret != 0)
416 vdbg_printk(FUJLAPTOP_DBG_ERROR,
417 "Unable to adjust LCD brightness, error code %i\n",
418 ret);
419 return ret;
420}
421
422static const struct backlight_ops fujitsubl_ops = {
423 .get_brightness = bl_get_brightness,
424 .update_status = bl_update_status,
425};
426
427/* Platform LCD brightness device */
428
429static ssize_t
430show_max_brightness(struct device *dev,
431 struct device_attribute *attr, char *buf)
432{
433
434 int ret;
435
436 ret = get_max_brightness();
437 if (ret < 0)
438 return ret;
439
440 return sprintf(buf, "%i\n", ret);
441}
442
443static ssize_t
444show_brightness_changed(struct device *dev,
445 struct device_attribute *attr, char *buf)
446{
447
448 int ret;
449
450 ret = fujitsu->brightness_changed;
451 if (ret < 0)
452 return ret;
453
454 return sprintf(buf, "%i\n", ret);
455}
456
457static ssize_t show_lcd_level(struct device *dev,
458 struct device_attribute *attr, char *buf)
459{
460
461 int ret;
462
463 ret = get_lcd_level();
464 if (ret < 0)
465 return ret;
466
467 return sprintf(buf, "%i\n", ret);
468}
469
470static ssize_t store_lcd_level(struct device *dev,
471 struct device_attribute *attr, const char *buf,
472 size_t count)
473{
474
475 int level, ret;
476
477 if (sscanf(buf, "%i", &level) != 1
478 || (level < 0 || level >= fujitsu->max_brightness))
479 return -EINVAL;
480
481 if (use_alt_lcd_levels)
482 ret = set_lcd_level_alt(level);
483 else
484 ret = set_lcd_level(level);
485 if (ret < 0)
486 return ret;
487
488 ret = get_lcd_level();
489 if (ret < 0)
490 return ret;
491
492 return count;
493}
494
495static ssize_t
496ignore_store(struct device *dev,
497 struct device_attribute *attr, const char *buf, size_t count)
498{
499 return count;
500}
501
502static ssize_t
503show_lid_state(struct device *dev,
504 struct device_attribute *attr, char *buf)
505{
506 if (!(fujitsu_hotkey->rfkill_supported & 0x100))
507 return sprintf(buf, "unknown\n");
508 if (fujitsu_hotkey->rfkill_state & 0x100)
509 return sprintf(buf, "open\n");
510 else
511 return sprintf(buf, "closed\n");
512}
513
514static ssize_t
515show_dock_state(struct device *dev,
516 struct device_attribute *attr, char *buf)
517{
518 if (!(fujitsu_hotkey->rfkill_supported & 0x200))
519 return sprintf(buf, "unknown\n");
520 if (fujitsu_hotkey->rfkill_state & 0x200)
521 return sprintf(buf, "docked\n");
522 else
523 return sprintf(buf, "undocked\n");
524}
525
526static ssize_t
527show_radios_state(struct device *dev,
528 struct device_attribute *attr, char *buf)
529{
530 if (!(fujitsu_hotkey->rfkill_supported & 0x20))
531 return sprintf(buf, "unknown\n");
532 if (fujitsu_hotkey->rfkill_state & 0x20)
533 return sprintf(buf, "on\n");
534 else
535 return sprintf(buf, "killed\n");
536}
537
538static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
539static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
540 ignore_store);
541static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
542static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
543static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
544static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
545
546static struct attribute *fujitsupf_attributes[] = {
547 &dev_attr_brightness_changed.attr,
548 &dev_attr_max_brightness.attr,
549 &dev_attr_lcd_level.attr,
550 &dev_attr_lid.attr,
551 &dev_attr_dock.attr,
552 &dev_attr_radios.attr,
553 NULL
554};
555
556static struct attribute_group fujitsupf_attribute_group = {
557 .attrs = fujitsupf_attributes
558};
559
560static struct platform_driver fujitsupf_driver = {
561 .driver = {
562 .name = "fujitsu-laptop",
563 .owner = THIS_MODULE,
564 }
565};
566
567static void dmi_check_cb_common(const struct dmi_system_id *id)
568{
569 pr_info("Identified laptop model '%s'\n", id->ident);
570 if (use_alt_lcd_levels == -1) {
571 if (acpi_has_method(NULL,
572 "\\_SB.PCI0.LPCB.FJEX.SBL2"))
573 use_alt_lcd_levels = 1;
574 else
575 use_alt_lcd_levels = 0;
576 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
577 "%i\n", use_alt_lcd_levels);
578 }
579}
580
581static int dmi_check_cb_s6410(const struct dmi_system_id *id)
582{
583 dmi_check_cb_common(id);
584 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
585 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
586 return 1;
587}
588
589static int dmi_check_cb_s6420(const struct dmi_system_id *id)
590{
591 dmi_check_cb_common(id);
592 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
593 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
594 return 1;
595}
596
597static int dmi_check_cb_p8010(const struct dmi_system_id *id)
598{
599 dmi_check_cb_common(id);
600 fujitsu->keycode1 = KEY_HELP; /* "Support" */
601 fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
602 fujitsu->keycode4 = KEY_WWW; /* "Internet" */
603 return 1;
604}
605
606static struct dmi_system_id fujitsu_dmi_table[] = {
607 {
608 .ident = "Fujitsu Siemens S6410",
609 .matches = {
610 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
611 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
612 },
613 .callback = dmi_check_cb_s6410},
614 {
615 .ident = "Fujitsu Siemens S6420",
616 .matches = {
617 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
618 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
619 },
620 .callback = dmi_check_cb_s6420},
621 {
622 .ident = "Fujitsu LifeBook P8010",
623 .matches = {
624 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
625 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
626 },
627 .callback = dmi_check_cb_p8010},
628 {}
629};
630
631/* ACPI device for LCD brightness control */
632
633static int acpi_fujitsu_add(struct acpi_device *device)
634{
635 int state = 0;
636 struct input_dev *input;
637 int error;
638
639 if (!device)
640 return -EINVAL;
641
642 fujitsu->acpi_handle = device->handle;
643 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
644 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
645 device->driver_data = fujitsu;
646
647 fujitsu->input = input = input_allocate_device();
648 if (!input) {
649 error = -ENOMEM;
650 goto err_stop;
651 }
652
653 snprintf(fujitsu->phys, sizeof(fujitsu->phys),
654 "%s/video/input0", acpi_device_hid(device));
655
656 input->name = acpi_device_name(device);
657 input->phys = fujitsu->phys;
658 input->id.bustype = BUS_HOST;
659 input->id.product = 0x06;
660 input->dev.parent = &device->dev;
661 input->evbit[0] = BIT(EV_KEY);
662 set_bit(KEY_BRIGHTNESSUP, input->keybit);
663 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
664 set_bit(KEY_UNKNOWN, input->keybit);
665
666 error = input_register_device(input);
667 if (error)
668 goto err_free_input_dev;
669
670 error = acpi_bus_update_power(fujitsu->acpi_handle, &state);
671 if (error) {
672 pr_err("Error reading power state\n");
673 goto err_unregister_input_dev;
674 }
675
676 pr_info("ACPI: %s [%s] (%s)\n",
677 acpi_device_name(device), acpi_device_bid(device),
678 !device->power.state ? "on" : "off");
679
680 fujitsu->dev = device;
681
682 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
683 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
684 if (ACPI_FAILURE
685 (acpi_evaluate_object
686 (device->handle, METHOD_NAME__INI, NULL, NULL)))
687 pr_err("_INI Method failed\n");
688 }
689
690 /* do config (detect defaults) */
691 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
692 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
693 vdbg_printk(FUJLAPTOP_DBG_INFO,
694 "config: [alt interface: %d], [adjust disable: %d]\n",
695 use_alt_lcd_levels, disable_brightness_adjust);
696
697 if (get_max_brightness() <= 0)
698 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
699 get_lcd_level();
700
701 return 0;
702
703err_unregister_input_dev:
704 input_unregister_device(input);
705 input = NULL;
706err_free_input_dev:
707 input_free_device(input);
708err_stop:
709 return error;
710}
711
712static int acpi_fujitsu_remove(struct acpi_device *device)
713{
714 struct fujitsu_t *fujitsu = acpi_driver_data(device);
715 struct input_dev *input = fujitsu->input;
716
717 input_unregister_device(input);
718
719 fujitsu->acpi_handle = NULL;
720
721 return 0;
722}
723
724/* Brightness notify */
725
726static void acpi_fujitsu_notify(struct acpi_device *device, u32 event)
727{
728 struct input_dev *input;
729 int keycode;
730 int oldb, newb;
731
732 input = fujitsu->input;
733
734 switch (event) {
735 case ACPI_FUJITSU_NOTIFY_CODE1:
736 keycode = 0;
737 oldb = fujitsu->brightness_level;
738 get_lcd_level();
739 newb = fujitsu->brightness_level;
740
741 vdbg_printk(FUJLAPTOP_DBG_TRACE,
742 "brightness button event [%i -> %i (%i)]\n",
743 oldb, newb, fujitsu->brightness_changed);
744
745 if (oldb < newb) {
746 if (disable_brightness_adjust != 1) {
747 if (use_alt_lcd_levels)
748 set_lcd_level_alt(newb);
749 else
750 set_lcd_level(newb);
751 }
752 keycode = KEY_BRIGHTNESSUP;
753 } else if (oldb > newb) {
754 if (disable_brightness_adjust != 1) {
755 if (use_alt_lcd_levels)
756 set_lcd_level_alt(newb);
757 else
758 set_lcd_level(newb);
759 }
760 keycode = KEY_BRIGHTNESSDOWN;
761 }
762 break;
763 default:
764 keycode = KEY_UNKNOWN;
765 vdbg_printk(FUJLAPTOP_DBG_WARN,
766 "unsupported event [0x%x]\n", event);
767 break;
768 }
769
770 if (keycode != 0) {
771 input_report_key(input, keycode, 1);
772 input_sync(input);
773 input_report_key(input, keycode, 0);
774 input_sync(input);
775 }
776}
777
778/* ACPI device for hotkey handling */
779
780static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
781{
782 int result = 0;
783 int state = 0;
784 struct input_dev *input;
785 int error;
786 int i;
787
788 if (!device)
789 return -EINVAL;
790
791 fujitsu_hotkey->acpi_handle = device->handle;
792 sprintf(acpi_device_name(device), "%s",
793 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
794 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
795 device->driver_data = fujitsu_hotkey;
796
797 /* kfifo */
798 spin_lock_init(&fujitsu_hotkey->fifo_lock);
799 error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
800 GFP_KERNEL);
801 if (error) {
802 pr_err("kfifo_alloc failed\n");
803 goto err_stop;
804 }
805
806 fujitsu_hotkey->input = input = input_allocate_device();
807 if (!input) {
808 error = -ENOMEM;
809 goto err_free_fifo;
810 }
811
812 snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
813 "%s/video/input0", acpi_device_hid(device));
814
815 input->name = acpi_device_name(device);
816 input->phys = fujitsu_hotkey->phys;
817 input->id.bustype = BUS_HOST;
818 input->id.product = 0x06;
819 input->dev.parent = &device->dev;
820
821 set_bit(EV_KEY, input->evbit);
822 set_bit(fujitsu->keycode1, input->keybit);
823 set_bit(fujitsu->keycode2, input->keybit);
824 set_bit(fujitsu->keycode3, input->keybit);
825 set_bit(fujitsu->keycode4, input->keybit);
826 set_bit(KEY_UNKNOWN, input->keybit);
827
828 error = input_register_device(input);
829 if (error)
830 goto err_free_input_dev;
831
832 error = acpi_bus_update_power(fujitsu_hotkey->acpi_handle, &state);
833 if (error) {
834 pr_err("Error reading power state\n");
835 goto err_unregister_input_dev;
836 }
837
838 pr_info("ACPI: %s [%s] (%s)\n",
839 acpi_device_name(device), acpi_device_bid(device),
840 !device->power.state ? "on" : "off");
841
842 fujitsu_hotkey->dev = device;
843
844 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
845 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
846 if (ACPI_FAILURE
847 (acpi_evaluate_object
848 (device->handle, METHOD_NAME__INI, NULL, NULL)))
849 pr_err("_INI Method failed\n");
850 }
851
852 i = 0;
853 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
854 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
855 ; /* No action, result is discarded */
856 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
857
858 fujitsu_hotkey->rfkill_supported =
859 call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
860
861 /* Make sure our bitmask of supported functions is cleared if the
862 RFKILL function block is not implemented, like on the S7020. */
863 if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
864 fujitsu_hotkey->rfkill_supported = 0;
865
866 if (fujitsu_hotkey->rfkill_supported)
867 fujitsu_hotkey->rfkill_state =
868 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
869
870 /* Suspect this is a keymap of the application panel, print it */
871 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
872
873#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
874 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
875 result = led_classdev_register(&fujitsu->pf_device->dev,
876 &logolamp_led);
877 if (result == 0) {
878 fujitsu_hotkey->logolamp_registered = 1;
879 } else {
880 pr_err("Could not register LED handler for logo lamp, error %i\n",
881 result);
882 }
883 }
884
885 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
886 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
887 result = led_classdev_register(&fujitsu->pf_device->dev,
888 &kblamps_led);
889 if (result == 0) {
890 fujitsu_hotkey->kblamps_registered = 1;
891 } else {
892 pr_err("Could not register LED handler for keyboard lamps, error %i\n",
893 result);
894 }
895 }
896#endif
897
898 return result;
899
900err_unregister_input_dev:
901 input_unregister_device(input);
902 input = NULL;
903err_free_input_dev:
904 input_free_device(input);
905err_free_fifo:
906 kfifo_free(&fujitsu_hotkey->fifo);
907err_stop:
908 return error;
909}
910
911static int acpi_fujitsu_hotkey_remove(struct acpi_device *device)
912{
913 struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device);
914 struct input_dev *input = fujitsu_hotkey->input;
915
916#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
917 if (fujitsu_hotkey->logolamp_registered)
918 led_classdev_unregister(&logolamp_led);
919
920 if (fujitsu_hotkey->kblamps_registered)
921 led_classdev_unregister(&kblamps_led);
922#endif
923
924 input_unregister_device(input);
925
926 kfifo_free(&fujitsu_hotkey->fifo);
927
928 fujitsu_hotkey->acpi_handle = NULL;
929
930 return 0;
931}
932
933static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
934{
935 struct input_dev *input;
936 int keycode, keycode_r;
937 unsigned int irb = 1;
938 int i, status;
939
940 input = fujitsu_hotkey->input;
941
942 if (fujitsu_hotkey->rfkill_supported)
943 fujitsu_hotkey->rfkill_state =
944 call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
945
946 switch (event) {
947 case ACPI_FUJITSU_NOTIFY_CODE1:
948 i = 0;
949 while ((irb =
950 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
951 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
952 switch (irb & 0x4ff) {
953 case KEY1_CODE:
954 keycode = fujitsu->keycode1;
955 break;
956 case KEY2_CODE:
957 keycode = fujitsu->keycode2;
958 break;
959 case KEY3_CODE:
960 keycode = fujitsu->keycode3;
961 break;
962 case KEY4_CODE:
963 keycode = fujitsu->keycode4;
964 break;
965 case 0:
966 keycode = 0;
967 break;
968 default:
969 vdbg_printk(FUJLAPTOP_DBG_WARN,
970 "Unknown GIRB result [%x]\n", irb);
971 keycode = -1;
972 break;
973 }
974 if (keycode > 0) {
975 vdbg_printk(FUJLAPTOP_DBG_TRACE,
976 "Push keycode into ringbuffer [%d]\n",
977 keycode);
978 status = kfifo_in_locked(&fujitsu_hotkey->fifo,
979 (unsigned char *)&keycode,
980 sizeof(keycode),
981 &fujitsu_hotkey->fifo_lock);
982 if (status != sizeof(keycode)) {
983 vdbg_printk(FUJLAPTOP_DBG_WARN,
984 "Could not push keycode [0x%x]\n",
985 keycode);
986 } else {
987 input_report_key(input, keycode, 1);
988 input_sync(input);
989 }
990 } else if (keycode == 0) {
991 while ((status =
992 kfifo_out_locked(
993 &fujitsu_hotkey->fifo,
994 (unsigned char *) &keycode_r,
995 sizeof(keycode_r),
996 &fujitsu_hotkey->fifo_lock))
997 == sizeof(keycode_r)) {
998 input_report_key(input, keycode_r, 0);
999 input_sync(input);
1000 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1001 "Pop keycode from ringbuffer [%d]\n",
1002 keycode_r);
1003 }
1004 }
1005 }
1006
1007 break;
1008 default:
1009 keycode = KEY_UNKNOWN;
1010 vdbg_printk(FUJLAPTOP_DBG_WARN,
1011 "Unsupported event [0x%x]\n", event);
1012 input_report_key(input, keycode, 1);
1013 input_sync(input);
1014 input_report_key(input, keycode, 0);
1015 input_sync(input);
1016 break;
1017 }
1018}
1019
1020/* Initialization */
1021
1022static const struct acpi_device_id fujitsu_device_ids[] = {
1023 {ACPI_FUJITSU_HID, 0},
1024 {"", 0},
1025};
1026
1027static struct acpi_driver acpi_fujitsu_driver = {
1028 .name = ACPI_FUJITSU_DRIVER_NAME,
1029 .class = ACPI_FUJITSU_CLASS,
1030 .ids = fujitsu_device_ids,
1031 .ops = {
1032 .add = acpi_fujitsu_add,
1033 .remove = acpi_fujitsu_remove,
1034 .notify = acpi_fujitsu_notify,
1035 },
1036};
1037
1038static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
1039 {ACPI_FUJITSU_HOTKEY_HID, 0},
1040 {"", 0},
1041};
1042
1043static struct acpi_driver acpi_fujitsu_hotkey_driver = {
1044 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
1045 .class = ACPI_FUJITSU_CLASS,
1046 .ids = fujitsu_hotkey_device_ids,
1047 .ops = {
1048 .add = acpi_fujitsu_hotkey_add,
1049 .remove = acpi_fujitsu_hotkey_remove,
1050 .notify = acpi_fujitsu_hotkey_notify,
1051 },
1052};
1053
1054static int __init fujitsu_init(void)
1055{
1056 int ret, result, max_brightness;
1057
1058 if (acpi_disabled)
1059 return -ENODEV;
1060
1061 fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
1062 if (!fujitsu)
1063 return -ENOMEM;
1064 fujitsu->keycode1 = KEY_PROG1;
1065 fujitsu->keycode2 = KEY_PROG2;
1066 fujitsu->keycode3 = KEY_PROG3;
1067 fujitsu->keycode4 = KEY_PROG4;
1068 dmi_check_system(fujitsu_dmi_table);
1069
1070 result = acpi_bus_register_driver(&acpi_fujitsu_driver);
1071 if (result < 0) {
1072 ret = -ENODEV;
1073 goto fail_acpi;
1074 }
1075
1076 /* Register platform stuff */
1077
1078 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1079 if (!fujitsu->pf_device) {
1080 ret = -ENOMEM;
1081 goto fail_platform_driver;
1082 }
1083
1084 ret = platform_device_add(fujitsu->pf_device);
1085 if (ret)
1086 goto fail_platform_device1;
1087
1088 ret =
1089 sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1090 &fujitsupf_attribute_group);
1091 if (ret)
1092 goto fail_platform_device2;
1093
1094 /* Register backlight stuff */
1095
1096 if (!acpi_video_backlight_support()) {
1097 struct backlight_properties props;
1098
1099 memset(&props, 0, sizeof(struct backlight_properties));
1100 max_brightness = fujitsu->max_brightness;
1101 props.type = BACKLIGHT_PLATFORM;
1102 props.max_brightness = max_brightness - 1;
1103 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
1104 NULL, NULL,
1105 &fujitsubl_ops,
1106 &props);
1107 if (IS_ERR(fujitsu->bl_device)) {
1108 ret = PTR_ERR(fujitsu->bl_device);
1109 fujitsu->bl_device = NULL;
1110 goto fail_sysfs_group;
1111 }
1112 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1113 }
1114
1115 ret = platform_driver_register(&fujitsupf_driver);
1116 if (ret)
1117 goto fail_backlight;
1118
1119 /* Register hotkey driver */
1120
1121 fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1122 if (!fujitsu_hotkey) {
1123 ret = -ENOMEM;
1124 goto fail_hotkey;
1125 }
1126
1127 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1128 if (result < 0) {
1129 ret = -ENODEV;
1130 goto fail_hotkey1;
1131 }
1132
1133 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1134
1135 if (!acpi_video_backlight_support()) {
1136 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1137 fujitsu->bl_device->props.power = 4;
1138 else
1139 fujitsu->bl_device->props.power = 0;
1140 }
1141
1142 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1143
1144 return 0;
1145
1146fail_hotkey1:
1147 kfree(fujitsu_hotkey);
1148fail_hotkey:
1149 platform_driver_unregister(&fujitsupf_driver);
1150fail_backlight:
1151 if (fujitsu->bl_device)
1152 backlight_device_unregister(fujitsu->bl_device);
1153fail_sysfs_group:
1154 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1155 &fujitsupf_attribute_group);
1156fail_platform_device2:
1157 platform_device_del(fujitsu->pf_device);
1158fail_platform_device1:
1159 platform_device_put(fujitsu->pf_device);
1160fail_platform_driver:
1161 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1162fail_acpi:
1163 kfree(fujitsu);
1164
1165 return ret;
1166}
1167
1168static void __exit fujitsu_cleanup(void)
1169{
1170 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1171
1172 kfree(fujitsu_hotkey);
1173
1174 platform_driver_unregister(&fujitsupf_driver);
1175
1176 if (fujitsu->bl_device)
1177 backlight_device_unregister(fujitsu->bl_device);
1178
1179 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1180 &fujitsupf_attribute_group);
1181
1182 platform_device_unregister(fujitsu->pf_device);
1183
1184 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1185
1186 kfree(fujitsu);
1187
1188 pr_info("driver unloaded\n");
1189}
1190
1191module_init(fujitsu_init);
1192module_exit(fujitsu_cleanup);
1193
1194module_param(use_alt_lcd_levels, uint, 0644);
1195MODULE_PARM_DESC(use_alt_lcd_levels,
1196 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1197module_param(disable_brightness_adjust, uint, 0644);
1198MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1199#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1200module_param_named(debug, dbg_level, uint, 0644);
1201MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1202#endif
1203
1204MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1205MODULE_DESCRIPTION("Fujitsu laptop extras support");
1206MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1207MODULE_LICENSE("GPL");
1208
1209MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1210MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1211MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
1212
1213static struct pnp_device_id pnp_ids[] __used = {
1214 {.id = "FUJ02bf"},
1215 {.id = "FUJ02B1"},
1216 {.id = "FUJ02E3"},
1217 {.id = ""}
1218};
1219
1220MODULE_DEVICE_TABLE(pnp, pnp_ids);