Merge branch 'for-3.19' of git://linux-nfs.org/~bfields/linux
[deliverable/linux.git] / 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 if (fujitsu->bl_device)
1157 backlight_device_unregister(fujitsu->bl_device);
1158 fail_sysfs_group:
1159 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1160 &fujitsupf_attribute_group);
1161 fail_platform_device2:
1162 platform_device_del(fujitsu->pf_device);
1163 fail_platform_device1:
1164 platform_device_put(fujitsu->pf_device);
1165 fail_platform_driver:
1166 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1167 fail_acpi:
1168 kfree(fujitsu);
1169
1170 return ret;
1171 }
1172
1173 static void __exit fujitsu_cleanup(void)
1174 {
1175 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1176
1177 kfree(fujitsu_hotkey);
1178
1179 platform_driver_unregister(&fujitsupf_driver);
1180
1181 if (fujitsu->bl_device)
1182 backlight_device_unregister(fujitsu->bl_device);
1183
1184 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1185 &fujitsupf_attribute_group);
1186
1187 platform_device_unregister(fujitsu->pf_device);
1188
1189 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1190
1191 kfree(fujitsu);
1192
1193 pr_info("driver unloaded\n");
1194 }
1195
1196 module_init(fujitsu_init);
1197 module_exit(fujitsu_cleanup);
1198
1199 module_param(use_alt_lcd_levels, uint, 0644);
1200 MODULE_PARM_DESC(use_alt_lcd_levels,
1201 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1202 module_param(disable_brightness_adjust, uint, 0644);
1203 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1204 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1205 module_param_named(debug, dbg_level, uint, 0644);
1206 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1207 #endif
1208
1209 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1210 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1211 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1212 MODULE_LICENSE("GPL");
1213
1214 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1215 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
1216 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
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