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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 implements a vendor-specific backlight control interface for
36 * Fujitsu laptops and provides support for hotkeys present on certain Fujitsu
37 * laptops.
38 *
39 * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
40 * P8010. It should work on most P-series and S-series Lifebooks, but
41 * YMMV.
42 *
43 * The module parameter use_alt_lcd_levels switches between different ACPI
44 * brightness controls which are used by different Fujitsu laptops. In most
45 * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
46 * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
47 *
48 */
49
50#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
51
52#include <linux/module.h>
53#include <linux/kernel.h>
54#include <linux/init.h>
55#include <linux/acpi.h>
56#include <linux/bitops.h>
57#include <linux/dmi.h>
58#include <linux/backlight.h>
59#include <linux/fb.h>
60#include <linux/input.h>
61#include <linux/input/sparse-keymap.h>
62#include <linux/kfifo.h>
63#include <linux/leds.h>
64#include <linux/platform_device.h>
65#include <acpi/video.h>
66
67#define FUJITSU_DRIVER_VERSION "0.6.0"
68
69#define FUJITSU_LCD_N_LEVELS 8
70
71#define ACPI_FUJITSU_CLASS "fujitsu"
72#define ACPI_FUJITSU_BL_HID "FUJ02B1"
73#define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
74#define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1"
75#define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3"
76#define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
77#define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3"
78
79#define ACPI_FUJITSU_NOTIFY_CODE 0x80
80
81/* FUNC interface - command values */
82#define FUNC_FLAGS BIT(12)
83#define FUNC_LEDS (BIT(12) | BIT(0))
84#define FUNC_BUTTONS (BIT(12) | BIT(1))
85#define FUNC_BACKLIGHT (BIT(12) | BIT(2))
86
87/* FUNC interface - responses */
88#define UNSUPPORTED_CMD 0x80000000
89
90/* FUNC interface - status flags */
91#define FLAG_RFKILL BIT(5)
92#define FLAG_LID BIT(8)
93#define FLAG_DOCK BIT(9)
94
95/* FUNC interface - LED control */
96#define FUNC_LED_OFF BIT(0)
97#define FUNC_LED_ON (BIT(0) | BIT(16) | BIT(17))
98#define LOGOLAMP_POWERON BIT(13)
99#define LOGOLAMP_ALWAYS BIT(14)
100#define KEYBOARD_LAMPS BIT(8)
101#define RADIO_LED_ON BIT(5)
102#define ECO_LED BIT(16)
103#define ECO_LED_ON BIT(19)
104
105/* FUNC interface - backlight power control */
106#define BACKLIGHT_PARAM_POWER BIT(2)
107#define BACKLIGHT_OFF (BIT(0) | BIT(1))
108#define BACKLIGHT_ON 0
109
110/* Scancodes read from the GIRB register */
111#define KEY1_CODE 0x410
112#define KEY2_CODE 0x411
113#define KEY3_CODE 0x412
114#define KEY4_CODE 0x413
115#define KEY5_CODE 0x420
116
117/* Hotkey ringbuffer limits */
118#define MAX_HOTKEY_RINGBUFFER_SIZE 100
119#define RINGBUFFERSIZE 40
120
121/* Module parameters */
122static int use_alt_lcd_levels = -1;
123static bool disable_brightness_adjust;
124
125/* Device controlling the backlight and associated keys */
126struct fujitsu_bl {
127 struct input_dev *input;
128 char phys[32];
129 struct backlight_device *bl_device;
130 unsigned int max_brightness;
131 unsigned int brightness_level;
132};
133
134static struct fujitsu_bl *fujitsu_bl;
135
136/* Device used to access hotkeys and other features on the laptop */
137struct fujitsu_laptop {
138 struct input_dev *input;
139 char phys[32];
140 struct platform_device *pf_device;
141 struct kfifo fifo;
142 spinlock_t fifo_lock;
143 int flags_supported;
144 int flags_state;
145};
146
147static struct acpi_device *fext;
148
149/* Fujitsu ACPI interface function */
150
151static int call_fext_func(struct acpi_device *device,
152 int func, int op, int feature, int state)
153{
154 union acpi_object params[4] = {
155 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
156 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = op },
157 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature },
158 { .integer.type = ACPI_TYPE_INTEGER, .integer.value = state }
159 };
160 struct acpi_object_list arg_list = { 4, params };
161 unsigned long long value;
162 acpi_status status;
163
164 status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,
165 &value);
166 if (ACPI_FAILURE(status)) {
167 acpi_handle_err(device->handle, "Failed to evaluate FUNC\n");
168 return -ENODEV;
169 }
170
171 acpi_handle_debug(device->handle,
172 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
173 func, op, feature, state, (int)value);
174 return value;
175}
176
177/* Hardware access for LCD brightness control */
178
179static int set_lcd_level(struct acpi_device *device, int level)
180{
181 struct fujitsu_bl *priv = acpi_driver_data(device);
182 acpi_status status;
183 char *method;
184
185 switch (use_alt_lcd_levels) {
186 case -1:
187 if (acpi_has_method(device->handle, "SBL2"))
188 method = "SBL2";
189 else
190 method = "SBLL";
191 break;
192 case 1:
193 method = "SBL2";
194 break;
195 default:
196 method = "SBLL";
197 break;
198 }
199
200 acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method,
201 level);
202
203 if (level < 0 || level >= priv->max_brightness)
204 return -EINVAL;
205
206 status = acpi_execute_simple_method(device->handle, method, level);
207 if (ACPI_FAILURE(status)) {
208 acpi_handle_err(device->handle, "Failed to evaluate %s\n",
209 method);
210 return -ENODEV;
211 }
212
213 priv->brightness_level = level;
214
215 return 0;
216}
217
218static int get_lcd_level(struct acpi_device *device)
219{
220 struct fujitsu_bl *priv = acpi_driver_data(device);
221 unsigned long long state = 0;
222 acpi_status status = AE_OK;
223
224 acpi_handle_debug(device->handle, "get lcd level via GBLL\n");
225
226 status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state);
227 if (ACPI_FAILURE(status))
228 return 0;
229
230 priv->brightness_level = state & 0x0fffffff;
231
232 return priv->brightness_level;
233}
234
235static int get_max_brightness(struct acpi_device *device)
236{
237 struct fujitsu_bl *priv = acpi_driver_data(device);
238 unsigned long long state = 0;
239 acpi_status status = AE_OK;
240
241 acpi_handle_debug(device->handle, "get max lcd level via RBLL\n");
242
243 status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state);
244 if (ACPI_FAILURE(status))
245 return -1;
246
247 priv->max_brightness = state;
248
249 return priv->max_brightness;
250}
251
252/* Backlight device stuff */
253
254static int bl_get_brightness(struct backlight_device *b)
255{
256 struct acpi_device *device = bl_get_data(b);
257
258 return b->props.power == FB_BLANK_POWERDOWN ? 0 : get_lcd_level(device);
259}
260
261static int bl_update_status(struct backlight_device *b)
262{
263 struct acpi_device *device = bl_get_data(b);
264
265 if (fext) {
266 if (b->props.power == FB_BLANK_POWERDOWN)
267 call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
268 BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
269 else
270 call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
271 BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
272 }
273
274 return set_lcd_level(device, b->props.brightness);
275}
276
277static const struct backlight_ops fujitsu_bl_ops = {
278 .get_brightness = bl_get_brightness,
279 .update_status = bl_update_status,
280};
281
282static ssize_t lid_show(struct device *dev, struct device_attribute *attr,
283 char *buf)
284{
285 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
286
287 if (!(priv->flags_supported & FLAG_LID))
288 return sprintf(buf, "unknown\n");
289 if (priv->flags_state & FLAG_LID)
290 return sprintf(buf, "open\n");
291 else
292 return sprintf(buf, "closed\n");
293}
294
295static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
296 char *buf)
297{
298 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
299
300 if (!(priv->flags_supported & FLAG_DOCK))
301 return sprintf(buf, "unknown\n");
302 if (priv->flags_state & FLAG_DOCK)
303 return sprintf(buf, "docked\n");
304 else
305 return sprintf(buf, "undocked\n");
306}
307
308static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
309 char *buf)
310{
311 struct fujitsu_laptop *priv = dev_get_drvdata(dev);
312
313 if (!(priv->flags_supported & FLAG_RFKILL))
314 return sprintf(buf, "unknown\n");
315 if (priv->flags_state & FLAG_RFKILL)
316 return sprintf(buf, "on\n");
317 else
318 return sprintf(buf, "killed\n");
319}
320
321static DEVICE_ATTR_RO(lid);
322static DEVICE_ATTR_RO(dock);
323static DEVICE_ATTR_RO(radios);
324
325static struct attribute *fujitsu_pf_attributes[] = {
326 &dev_attr_lid.attr,
327 &dev_attr_dock.attr,
328 &dev_attr_radios.attr,
329 NULL
330};
331
332static const struct attribute_group fujitsu_pf_attribute_group = {
333 .attrs = fujitsu_pf_attributes
334};
335
336static struct platform_driver fujitsu_pf_driver = {
337 .driver = {
338 .name = "fujitsu-laptop",
339 }
340};
341
342/* ACPI device for LCD brightness control */
343
344static const struct key_entry keymap_backlight[] = {
345 { KE_KEY, true, { KEY_BRIGHTNESSUP } },
346 { KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
347 { KE_END, 0 }
348};
349
350static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
351{
352 struct fujitsu_bl *priv = acpi_driver_data(device);
353 int ret;
354
355 priv->input = devm_input_allocate_device(&device->dev);
356 if (!priv->input)
357 return -ENOMEM;
358
359 snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0",
360 acpi_device_hid(device));
361
362 priv->input->name = acpi_device_name(device);
363 priv->input->phys = priv->phys;
364 priv->input->id.bustype = BUS_HOST;
365 priv->input->id.product = 0x06;
366
367 ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);
368 if (ret)
369 return ret;
370
371 return input_register_device(priv->input);
372}
373
374static int fujitsu_backlight_register(struct acpi_device *device)
375{
376 struct fujitsu_bl *priv = acpi_driver_data(device);
377 const struct backlight_properties props = {
378 .brightness = priv->brightness_level,
379 .max_brightness = priv->max_brightness - 1,
380 .type = BACKLIGHT_PLATFORM
381 };
382 struct backlight_device *bd;
383
384 bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop",
385 &device->dev, device,
386 &fujitsu_bl_ops, &props);
387 if (IS_ERR(bd))
388 return PTR_ERR(bd);
389
390 priv->bl_device = bd;
391
392 return 0;
393}
394
395static int acpi_fujitsu_bl_add(struct acpi_device *device)
396{
397 struct fujitsu_bl *priv;
398 int ret;
399
400 if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
401 return -ENODEV;
402
403 priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
404 if (!priv)
405 return -ENOMEM;
406
407 fujitsu_bl = priv;
408 strcpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME);
409 strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
410 device->driver_data = priv;
411
412 pr_info("ACPI: %s [%s]\n",
413 acpi_device_name(device), acpi_device_bid(device));
414
415 if (get_max_brightness(device) <= 0)
416 priv->max_brightness = FUJITSU_LCD_N_LEVELS;
417 get_lcd_level(device);
418
419 ret = acpi_fujitsu_bl_input_setup(device);
420 if (ret)
421 return ret;
422
423 return fujitsu_backlight_register(device);
424}
425
426/* Brightness notify */
427
428static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
429{
430 struct fujitsu_bl *priv = acpi_driver_data(device);
431 int oldb, newb;
432
433 if (event != ACPI_FUJITSU_NOTIFY_CODE) {
434 acpi_handle_info(device->handle, "unsupported event [0x%x]\n",
435 event);
436 sparse_keymap_report_event(priv->input, -1, 1, true);
437 return;
438 }
439
440 oldb = priv->brightness_level;
441 get_lcd_level(device);
442 newb = priv->brightness_level;
443
444 acpi_handle_debug(device->handle,
445 "brightness button event [%i -> %i]\n", oldb, newb);
446
447 if (oldb == newb)
448 return;
449
450 if (!disable_brightness_adjust)
451 set_lcd_level(device, newb);
452
453 sparse_keymap_report_event(priv->input, oldb < newb, 1, true);
454}
455
456/* ACPI device for hotkey handling */
457
458static const struct key_entry keymap_default[] = {
459 { KE_KEY, KEY1_CODE, { KEY_PROG1 } },
460 { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
461 { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
462 { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
463 { KE_KEY, KEY5_CODE, { KEY_RFKILL } },
464 { KE_KEY, BIT(5), { KEY_RFKILL } },
465 { KE_KEY, BIT(26), { KEY_TOUCHPAD_TOGGLE } },
466 { KE_KEY, BIT(29), { KEY_MICMUTE } },
467 { KE_END, 0 }
468};
469
470static const struct key_entry keymap_s64x0[] = {
471 { KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } }, /* "Lock" */
472 { KE_KEY, KEY2_CODE, { KEY_HELP } }, /* "Mobility Center */
473 { KE_KEY, KEY3_CODE, { KEY_PROG3 } },
474 { KE_KEY, KEY4_CODE, { KEY_PROG4 } },
475 { KE_END, 0 }
476};
477
478static const struct key_entry keymap_p8010[] = {
479 { KE_KEY, KEY1_CODE, { KEY_HELP } }, /* "Support" */
480 { KE_KEY, KEY2_CODE, { KEY_PROG2 } },
481 { KE_KEY, KEY3_CODE, { KEY_SWITCHVIDEOMODE } }, /* "Presentation" */
482 { KE_KEY, KEY4_CODE, { KEY_WWW } }, /* "WWW" */
483 { KE_END, 0 }
484};
485
486static const struct key_entry *keymap = keymap_default;
487
488static int fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id *id)
489{
490 pr_info("Identified laptop model '%s'\n", id->ident);
491 keymap = id->driver_data;
492 return 1;
493}
494
495static const struct dmi_system_id fujitsu_laptop_dmi_table[] = {
496 {
497 .callback = fujitsu_laptop_dmi_keymap_override,
498 .ident = "Fujitsu Siemens S6410",
499 .matches = {
500 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
501 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
502 },
503 .driver_data = (void *)keymap_s64x0
504 },
505 {
506 .callback = fujitsu_laptop_dmi_keymap_override,
507 .ident = "Fujitsu Siemens S6420",
508 .matches = {
509 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
510 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
511 },
512 .driver_data = (void *)keymap_s64x0
513 },
514 {
515 .callback = fujitsu_laptop_dmi_keymap_override,
516 .ident = "Fujitsu LifeBook P8010",
517 .matches = {
518 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
519 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
520 },
521 .driver_data = (void *)keymap_p8010
522 },
523 {}
524};
525
526static int acpi_fujitsu_laptop_input_setup(struct acpi_device *device)
527{
528 struct fujitsu_laptop *priv = acpi_driver_data(device);
529 int ret;
530
531 priv->input = devm_input_allocate_device(&device->dev);
532 if (!priv->input)
533 return -ENOMEM;
534
535 snprintf(priv->phys, sizeof(priv->phys), "%s/input0",
536 acpi_device_hid(device));
537
538 priv->input->name = acpi_device_name(device);
539 priv->input->phys = priv->phys;
540 priv->input->id.bustype = BUS_HOST;
541
542 dmi_check_system(fujitsu_laptop_dmi_table);
543 ret = sparse_keymap_setup(priv->input, keymap, NULL);
544 if (ret)
545 return ret;
546
547 return input_register_device(priv->input);
548}
549
550static int fujitsu_laptop_platform_add(struct acpi_device *device)
551{
552 struct fujitsu_laptop *priv = acpi_driver_data(device);
553 int ret;
554
555 priv->pf_device = platform_device_alloc("fujitsu-laptop", -1);
556 if (!priv->pf_device)
557 return -ENOMEM;
558
559 platform_set_drvdata(priv->pf_device, priv);
560
561 ret = platform_device_add(priv->pf_device);
562 if (ret)
563 goto err_put_platform_device;
564
565 ret = sysfs_create_group(&priv->pf_device->dev.kobj,
566 &fujitsu_pf_attribute_group);
567 if (ret)
568 goto err_del_platform_device;
569
570 return 0;
571
572err_del_platform_device:
573 platform_device_del(priv->pf_device);
574err_put_platform_device:
575 platform_device_put(priv->pf_device);
576
577 return ret;
578}
579
580static void fujitsu_laptop_platform_remove(struct acpi_device *device)
581{
582 struct fujitsu_laptop *priv = acpi_driver_data(device);
583
584 sysfs_remove_group(&priv->pf_device->dev.kobj,
585 &fujitsu_pf_attribute_group);
586 platform_device_unregister(priv->pf_device);
587}
588
589static int logolamp_set(struct led_classdev *cdev,
590 enum led_brightness brightness)
591{
592 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
593 int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
594 int ret;
595
596 if (brightness < LED_HALF)
597 poweron = FUNC_LED_OFF;
598
599 if (brightness < LED_FULL)
600 always = FUNC_LED_OFF;
601
602 ret = call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
603 if (ret < 0)
604 return ret;
605
606 return call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
607}
608
609static enum led_brightness logolamp_get(struct led_classdev *cdev)
610{
611 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
612 int ret;
613
614 ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
615 if (ret == FUNC_LED_ON)
616 return LED_FULL;
617
618 ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
619 if (ret == FUNC_LED_ON)
620 return LED_HALF;
621
622 return LED_OFF;
623}
624
625static int kblamps_set(struct led_classdev *cdev,
626 enum led_brightness brightness)
627{
628 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
629
630 if (brightness >= LED_FULL)
631 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
632 FUNC_LED_ON);
633 else
634 return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
635 FUNC_LED_OFF);
636}
637
638static enum led_brightness kblamps_get(struct led_classdev *cdev)
639{
640 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
641 enum led_brightness brightness = LED_OFF;
642
643 if (call_fext_func(device,
644 FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
645 brightness = LED_FULL;
646
647 return brightness;
648}
649
650static int radio_led_set(struct led_classdev *cdev,
651 enum led_brightness brightness)
652{
653 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
654
655 if (brightness >= LED_FULL)
656 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
657 RADIO_LED_ON);
658 else
659 return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON,
660 0x0);
661}
662
663static enum led_brightness radio_led_get(struct led_classdev *cdev)
664{
665 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
666 enum led_brightness brightness = LED_OFF;
667
668 if (call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
669 brightness = LED_FULL;
670
671 return brightness;
672}
673
674static int eco_led_set(struct led_classdev *cdev,
675 enum led_brightness brightness)
676{
677 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
678 int curr;
679
680 curr = call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0);
681 if (brightness >= LED_FULL)
682 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
683 curr | ECO_LED_ON);
684 else
685 return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED,
686 curr & ~ECO_LED_ON);
687}
688
689static enum led_brightness eco_led_get(struct led_classdev *cdev)
690{
691 struct acpi_device *device = to_acpi_device(cdev->dev->parent);
692 enum led_brightness brightness = LED_OFF;
693
694 if (call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
695 brightness = LED_FULL;
696
697 return brightness;
698}
699
700static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
701{
702 struct fujitsu_laptop *priv = acpi_driver_data(device);
703 struct led_classdev *led;
704 int ret;
705
706 if (call_fext_func(device,
707 FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
708 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
709 if (!led)
710 return -ENOMEM;
711
712 led->name = "fujitsu::logolamp";
713 led->brightness_set_blocking = logolamp_set;
714 led->brightness_get = logolamp_get;
715 ret = devm_led_classdev_register(&device->dev, led);
716 if (ret)
717 return ret;
718 }
719
720 if ((call_fext_func(device,
721 FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
722 (call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
723 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
724 if (!led)
725 return -ENOMEM;
726
727 led->name = "fujitsu::kblamps";
728 led->brightness_set_blocking = kblamps_set;
729 led->brightness_get = kblamps_get;
730 ret = devm_led_classdev_register(&device->dev, led);
731 if (ret)
732 return ret;
733 }
734
735 /*
736 * Some Fujitsu laptops have a radio toggle button in place of a slide
737 * switch and all such machines appear to also have an RF LED. Based on
738 * comparing DSDT tables of four Fujitsu Lifebook models (E744, E751,
739 * S7110, S8420; the first one has a radio toggle button, the other
740 * three have slide switches), bit 17 of flags_supported (the value
741 * returned by method S000 of ACPI device FUJ02E3) seems to indicate
742 * whether given model has a radio toggle button.
743 */
744 if (priv->flags_supported & BIT(17)) {
745 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
746 if (!led)
747 return -ENOMEM;
748
749 led->name = "fujitsu::radio_led";
750 led->brightness_set_blocking = radio_led_set;
751 led->brightness_get = radio_led_get;
752 led->default_trigger = "rfkill-any";
753 ret = devm_led_classdev_register(&device->dev, led);
754 if (ret)
755 return ret;
756 }
757
758 /* Support for eco led is not always signaled in bit corresponding
759 * to the bit used to control the led. According to the DSDT table,
760 * bit 14 seems to indicate presence of said led as well.
761 * Confirm by testing the status.
762 */
763 if ((call_fext_func(device, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
764 (call_fext_func(device,
765 FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
766 led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);
767 if (!led)
768 return -ENOMEM;
769
770 led->name = "fujitsu::eco_led";
771 led->brightness_set_blocking = eco_led_set;
772 led->brightness_get = eco_led_get;
773 ret = devm_led_classdev_register(&device->dev, led);
774 if (ret)
775 return ret;
776 }
777
778 return 0;
779}
780
781static int acpi_fujitsu_laptop_add(struct acpi_device *device)
782{
783 struct fujitsu_laptop *priv;
784 int ret, i = 0;
785
786 priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
787 if (!priv)
788 return -ENOMEM;
789
790 WARN_ONCE(fext, "More than one FUJ02E3 ACPI device was found. Driver may not work as intended.");
791 fext = device;
792
793 strcpy(acpi_device_name(device), ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
794 strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
795 device->driver_data = priv;
796
797 /* kfifo */
798 spin_lock_init(&priv->fifo_lock);
799 ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof(int),
800 GFP_KERNEL);
801 if (ret)
802 return ret;
803
804 pr_info("ACPI: %s [%s]\n",
805 acpi_device_name(device), acpi_device_bid(device));
806
807 while (call_fext_func(device, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 &&
808 i++ < MAX_HOTKEY_RINGBUFFER_SIZE)
809 ; /* No action, result is discarded */
810 acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n",
811 i);
812
813 priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0x0, 0x0,
814 0x0);
815
816 /* Make sure our bitmask of supported functions is cleared if the
817 RFKILL function block is not implemented, like on the S7020. */
818 if (priv->flags_supported == UNSUPPORTED_CMD)
819 priv->flags_supported = 0;
820
821 if (priv->flags_supported)
822 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
823 0x0);
824
825 /* Suspect this is a keymap of the application panel, print it */
826 acpi_handle_info(device->handle, "BTNI: [0x%x]\n",
827 call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0));
828
829 /* Sync backlight power status */
830 if (fujitsu_bl && fujitsu_bl->bl_device &&
831 acpi_video_get_backlight_type() == acpi_backlight_vendor) {
832 if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2,
833 BACKLIGHT_PARAM_POWER, 0x0) == BACKLIGHT_OFF)
834 fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
835 else
836 fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;
837 }
838
839 ret = acpi_fujitsu_laptop_input_setup(device);
840 if (ret)
841 goto err_free_fifo;
842
843 ret = acpi_fujitsu_laptop_leds_register(device);
844 if (ret)
845 goto err_free_fifo;
846
847 ret = fujitsu_laptop_platform_add(device);
848 if (ret)
849 goto err_free_fifo;
850
851 return 0;
852
853err_free_fifo:
854 kfifo_free(&priv->fifo);
855
856 return ret;
857}
858
859static int acpi_fujitsu_laptop_remove(struct acpi_device *device)
860{
861 struct fujitsu_laptop *priv = acpi_driver_data(device);
862
863 fujitsu_laptop_platform_remove(device);
864
865 kfifo_free(&priv->fifo);
866
867 return 0;
868}
869
870static void acpi_fujitsu_laptop_press(struct acpi_device *device, int scancode)
871{
872 struct fujitsu_laptop *priv = acpi_driver_data(device);
873 int ret;
874
875 ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode,
876 sizeof(scancode), &priv->fifo_lock);
877 if (ret != sizeof(scancode)) {
878 dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n",
879 scancode);
880 return;
881 }
882 sparse_keymap_report_event(priv->input, scancode, 1, false);
883 dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n",
884 scancode);
885}
886
887static void acpi_fujitsu_laptop_release(struct acpi_device *device)
888{
889 struct fujitsu_laptop *priv = acpi_driver_data(device);
890 int scancode, ret;
891
892 while (true) {
893 ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode,
894 sizeof(scancode), &priv->fifo_lock);
895 if (ret != sizeof(scancode))
896 return;
897 sparse_keymap_report_event(priv->input, scancode, 0, false);
898 dev_dbg(&priv->input->dev,
899 "Pop scancode from ringbuffer [0x%x]\n", scancode);
900 }
901}
902
903static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
904{
905 struct fujitsu_laptop *priv = acpi_driver_data(device);
906 int scancode, i = 0, ret;
907 unsigned int irb;
908
909 if (event != ACPI_FUJITSU_NOTIFY_CODE) {
910 acpi_handle_info(device->handle, "Unsupported event [0x%x]\n",
911 event);
912 sparse_keymap_report_event(priv->input, -1, 1, true);
913 return;
914 }
915
916 if (priv->flags_supported)
917 priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,
918 0x0);
919
920 while ((irb = call_fext_func(device,
921 FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
922 i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
923 scancode = irb & 0x4ff;
924 if (sparse_keymap_entry_from_scancode(priv->input, scancode))
925 acpi_fujitsu_laptop_press(device, scancode);
926 else if (scancode == 0)
927 acpi_fujitsu_laptop_release(device);
928 else
929 acpi_handle_info(device->handle,
930 "Unknown GIRB result [%x]\n", irb);
931 }
932
933 /* On some models (first seen on the Skylake-based Lifebook
934 * E736/E746/E756), the touchpad toggle hotkey (Fn+F4) is
935 * handled in software; its state is queried using FUNC_FLAGS
936 */
937 if (priv->flags_supported & (BIT(5) | BIT(26) | BIT(29))) {
938 ret = call_fext_func(device, FUNC_FLAGS, 0x1, 0x0, 0x0);
939 if (ret & BIT(5))
940 sparse_keymap_report_event(priv->input,
941 BIT(5), 1, true);
942 if (ret & BIT(26))
943 sparse_keymap_report_event(priv->input,
944 BIT(26), 1, true);
945 if (ret & BIT(29))
946 sparse_keymap_report_event(priv->input,
947 BIT(29), 1, true);
948 }
949}
950
951/* Initialization */
952
953static const struct acpi_device_id fujitsu_bl_device_ids[] = {
954 {ACPI_FUJITSU_BL_HID, 0},
955 {"", 0},
956};
957
958static struct acpi_driver acpi_fujitsu_bl_driver = {
959 .name = ACPI_FUJITSU_BL_DRIVER_NAME,
960 .class = ACPI_FUJITSU_CLASS,
961 .ids = fujitsu_bl_device_ids,
962 .ops = {
963 .add = acpi_fujitsu_bl_add,
964 .notify = acpi_fujitsu_bl_notify,
965 },
966};
967
968static const struct acpi_device_id fujitsu_laptop_device_ids[] = {
969 {ACPI_FUJITSU_LAPTOP_HID, 0},
970 {"", 0},
971};
972
973static struct acpi_driver acpi_fujitsu_laptop_driver = {
974 .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME,
975 .class = ACPI_FUJITSU_CLASS,
976 .ids = fujitsu_laptop_device_ids,
977 .ops = {
978 .add = acpi_fujitsu_laptop_add,
979 .remove = acpi_fujitsu_laptop_remove,
980 .notify = acpi_fujitsu_laptop_notify,
981 },
982};
983
984static const struct acpi_device_id fujitsu_ids[] __used = {
985 {ACPI_FUJITSU_BL_HID, 0},
986 {ACPI_FUJITSU_LAPTOP_HID, 0},
987 {"", 0}
988};
989MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
990
991static int __init fujitsu_init(void)
992{
993 int ret;
994
995 ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
996 if (ret)
997 return ret;
998
999 /* Register platform stuff */
1000
1001 ret = platform_driver_register(&fujitsu_pf_driver);
1002 if (ret)
1003 goto err_unregister_acpi;
1004
1005 /* Register laptop driver */
1006
1007 ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
1008 if (ret)
1009 goto err_unregister_platform_driver;
1010
1011 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1012
1013 return 0;
1014
1015err_unregister_platform_driver:
1016 platform_driver_unregister(&fujitsu_pf_driver);
1017err_unregister_acpi:
1018 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1019
1020 return ret;
1021}
1022
1023static void __exit fujitsu_cleanup(void)
1024{
1025 acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver);
1026
1027 platform_driver_unregister(&fujitsu_pf_driver);
1028
1029 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1030
1031 pr_info("driver unloaded\n");
1032}
1033
1034module_init(fujitsu_init);
1035module_exit(fujitsu_cleanup);
1036
1037module_param(use_alt_lcd_levels, int, 0644);
1038MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)");
1039module_param(disable_brightness_adjust, bool, 0644);
1040MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");
1041
1042MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1043MODULE_DESCRIPTION("Fujitsu laptop extras support");
1044MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1045MODULE_LICENSE("GPL");