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>
8 Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
9 Adrian Yee <brewt-fujitsu@brewt.org>
11 Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
12 by its respective authors.
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.
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.
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
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.
35 * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/;
36 * others may be added at a later date.
38 * lcd_level - Screen brightness: contains a single integer in the
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/.
45 * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
46 * also supported by this driver.
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
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.
59 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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>
68 #include <linux/input.h>
69 #include <linux/kfifo.h>
70 #include <linux/platform_device.h>
71 #include <linux/slab.h>
72 #if IS_ENABLED(CONFIG_LEDS_CLASS)
73 #include <linux/leds.h>
75 #include <acpi/video.h>
77 #define FUJITSU_DRIVER_VERSION "0.6.0"
79 #define FUJITSU_LCD_N_LEVELS 8
81 #define ACPI_FUJITSU_CLASS "fujitsu"
82 #define ACPI_FUJITSU_BL_HID "FUJ02B1"
83 #define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
84 #define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1"
85 #define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3"
86 #define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
87 #define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3"
89 #define ACPI_FUJITSU_NOTIFY_CODE1 0x80
91 /* FUNC interface - command values */
92 #define FUNC_FLAGS 0x1000
93 #define FUNC_LEDS 0x1001
94 #define FUNC_BUTTONS 0x1002
95 #define FUNC_BACKLIGHT 0x1004
97 /* FUNC interface - responses */
98 #define UNSUPPORTED_CMD 0x80000000
100 /* FUNC interface - status flags */
101 #define FLAG_RFKILL 0x020
102 #define FLAG_LID 0x100
103 #define FLAG_DOCK 0x200
105 #if IS_ENABLED(CONFIG_LEDS_CLASS)
106 /* FUNC interface - LED control */
107 #define FUNC_LED_OFF 0x1
108 #define FUNC_LED_ON 0x30001
109 #define KEYBOARD_LAMPS 0x100
110 #define LOGOLAMP_POWERON 0x2000
111 #define LOGOLAMP_ALWAYS 0x4000
112 #define RADIO_LED_ON 0x20
113 #define ECO_LED 0x10000
114 #define ECO_LED_ON 0x80000
118 #define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
119 #define KEY2_CODE 0x411
120 #define KEY3_CODE 0x412
121 #define KEY4_CODE 0x413
122 #define KEY5_CODE 0x420
124 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
125 #define RINGBUFFERSIZE 40
128 #define FUJLAPTOP_DBG_ERROR 0x0001
129 #define FUJLAPTOP_DBG_WARN 0x0002
130 #define FUJLAPTOP_DBG_INFO 0x0004
131 #define FUJLAPTOP_DBG_TRACE 0x0008
133 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
134 #define vdbg_printk(a_dbg_level, format, arg...) \
135 do { if (dbg_level & a_dbg_level) \
136 printk(KERN_DEBUG pr_fmt("%s: " format), __func__, ## arg); \
139 #define vdbg_printk(a_dbg_level, format, arg...) \
143 /* Device controlling the backlight and associated keys */
145 acpi_handle acpi_handle;
146 struct acpi_device *dev;
147 struct input_dev *input;
149 struct backlight_device *bl_device;
150 struct platform_device *pf_device;
151 int keycode1, keycode2, keycode3, keycode4, keycode5;
153 unsigned int max_brightness;
154 unsigned int brightness_changed;
155 unsigned int brightness_level;
158 static struct fujitsu_bl *fujitsu_bl;
159 static int use_alt_lcd_levels = -1;
160 static int disable_brightness_adjust = -1;
162 /* Device used to access hotkeys and other features on the laptop */
163 struct fujitsu_laptop {
164 acpi_handle acpi_handle;
165 struct acpi_device *dev;
166 struct input_dev *input;
168 struct platform_device *pf_device;
170 spinlock_t fifo_lock;
173 int logolamp_registered;
174 int kblamps_registered;
175 int radio_led_registered;
176 int eco_led_registered;
179 static struct fujitsu_laptop *fujitsu_laptop;
181 #if IS_ENABLED(CONFIG_LEDS_CLASS)
182 static enum led_brightness logolamp_get(struct led_classdev *cdev);
183 static int logolamp_set(struct led_classdev *cdev,
184 enum led_brightness brightness);
186 static struct led_classdev logolamp_led = {
187 .name = "fujitsu::logolamp",
188 .brightness_get = logolamp_get,
189 .brightness_set_blocking = logolamp_set
192 static enum led_brightness kblamps_get(struct led_classdev *cdev);
193 static int kblamps_set(struct led_classdev *cdev,
194 enum led_brightness brightness);
196 static struct led_classdev kblamps_led = {
197 .name = "fujitsu::kblamps",
198 .brightness_get = kblamps_get,
199 .brightness_set_blocking = kblamps_set
202 static enum led_brightness radio_led_get(struct led_classdev *cdev);
203 static int radio_led_set(struct led_classdev *cdev,
204 enum led_brightness brightness);
206 static struct led_classdev radio_led = {
207 .name = "fujitsu::radio_led",
208 .default_trigger = "rfkill-any",
209 .brightness_get = radio_led_get,
210 .brightness_set_blocking = radio_led_set
213 static enum led_brightness eco_led_get(struct led_classdev *cdev);
214 static int eco_led_set(struct led_classdev *cdev,
215 enum led_brightness brightness);
217 static struct led_classdev eco_led = {
218 .name = "fujitsu::eco_led",
219 .brightness_get = eco_led_get,
220 .brightness_set_blocking = eco_led_set
224 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
225 static u32 dbg_level = 0x03;
228 /* Fujitsu ACPI interface function */
230 static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
232 acpi_status status = AE_OK;
233 union acpi_object params[4] = {
234 { .type = ACPI_TYPE_INTEGER },
235 { .type = ACPI_TYPE_INTEGER },
236 { .type = ACPI_TYPE_INTEGER },
237 { .type = ACPI_TYPE_INTEGER }
239 struct acpi_object_list arg_list = { 4, ¶ms[0] };
240 unsigned long long value;
241 acpi_handle handle = NULL;
243 status = acpi_get_handle(fujitsu_laptop->acpi_handle, "FUNC", &handle);
244 if (ACPI_FAILURE(status)) {
245 vdbg_printk(FUJLAPTOP_DBG_ERROR,
246 "FUNC interface is not present\n");
250 params[0].integer.value = cmd;
251 params[1].integer.value = arg0;
252 params[2].integer.value = arg1;
253 params[3].integer.value = arg2;
255 status = acpi_evaluate_integer(handle, NULL, &arg_list, &value);
256 if (ACPI_FAILURE(status)) {
257 vdbg_printk(FUJLAPTOP_DBG_WARN,
258 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
259 cmd, arg0, arg1, arg2);
263 vdbg_printk(FUJLAPTOP_DBG_TRACE,
264 "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
265 cmd, arg0, arg1, arg2, (int)value);
269 #if IS_ENABLED(CONFIG_LEDS_CLASS)
270 /* LED class callbacks */
272 static int logolamp_set(struct led_classdev *cdev,
273 enum led_brightness brightness)
275 int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
278 if (brightness < LED_HALF)
279 poweron = FUNC_LED_OFF;
281 if (brightness < LED_FULL)
282 always = FUNC_LED_OFF;
284 ret = call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
288 return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
291 static int kblamps_set(struct led_classdev *cdev,
292 enum led_brightness brightness)
294 if (brightness >= LED_FULL)
295 return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
297 return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
300 static int radio_led_set(struct led_classdev *cdev,
301 enum led_brightness brightness)
303 if (brightness >= LED_FULL)
304 return call_fext_func(FUNC_FLAGS, 0x5, RADIO_LED_ON, RADIO_LED_ON);
306 return call_fext_func(FUNC_FLAGS, 0x5, RADIO_LED_ON, 0x0);
309 static int eco_led_set(struct led_classdev *cdev,
310 enum led_brightness brightness)
314 curr = call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0);
315 if (brightness >= LED_FULL)
316 return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr | ECO_LED_ON);
318 return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr & ~ECO_LED_ON);
321 static enum led_brightness logolamp_get(struct led_classdev *cdev)
325 ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
326 if (ret == FUNC_LED_ON)
329 ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
330 if (ret == FUNC_LED_ON)
336 static enum led_brightness kblamps_get(struct led_classdev *cdev)
338 enum led_brightness brightness = LED_OFF;
340 if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
341 brightness = LED_FULL;
346 static enum led_brightness radio_led_get(struct led_classdev *cdev)
348 enum led_brightness brightness = LED_OFF;
350 if (call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
351 brightness = LED_FULL;
356 static enum led_brightness eco_led_get(struct led_classdev *cdev)
358 enum led_brightness brightness = LED_OFF;
360 if (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
361 brightness = LED_FULL;
367 /* Hardware access for LCD brightness control */
369 static int set_lcd_level(int level)
371 acpi_status status = AE_OK;
372 acpi_handle handle = NULL;
374 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
377 if (level < 0 || level >= fujitsu_bl->max_brightness)
380 status = acpi_get_handle(fujitsu_bl->acpi_handle, "SBLL", &handle);
381 if (ACPI_FAILURE(status)) {
382 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
387 status = acpi_execute_simple_method(handle, NULL, level);
388 if (ACPI_FAILURE(status))
394 static int set_lcd_level_alt(int level)
396 acpi_status status = AE_OK;
397 acpi_handle handle = NULL;
399 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
402 if (level < 0 || level >= fujitsu_bl->max_brightness)
405 status = acpi_get_handle(fujitsu_bl->acpi_handle, "SBL2", &handle);
406 if (ACPI_FAILURE(status)) {
407 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
411 status = acpi_execute_simple_method(handle, NULL, level);
412 if (ACPI_FAILURE(status))
418 static int get_lcd_level(void)
420 unsigned long long state = 0;
421 acpi_status status = AE_OK;
423 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
425 status = acpi_evaluate_integer(fujitsu_bl->acpi_handle, "GBLL", NULL,
427 if (ACPI_FAILURE(status))
430 fujitsu_bl->brightness_level = state & 0x0fffffff;
432 if (state & 0x80000000)
433 fujitsu_bl->brightness_changed = 1;
435 fujitsu_bl->brightness_changed = 0;
437 return fujitsu_bl->brightness_level;
440 static int get_max_brightness(void)
442 unsigned long long state = 0;
443 acpi_status status = AE_OK;
445 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
447 status = acpi_evaluate_integer(fujitsu_bl->acpi_handle, "RBLL", NULL,
449 if (ACPI_FAILURE(status))
452 fujitsu_bl->max_brightness = state;
454 return fujitsu_bl->max_brightness;
457 /* Backlight device stuff */
459 static int bl_get_brightness(struct backlight_device *b)
461 return get_lcd_level();
464 static int bl_update_status(struct backlight_device *b)
467 if (b->props.power == FB_BLANK_POWERDOWN)
468 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
470 ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
472 vdbg_printk(FUJLAPTOP_DBG_ERROR,
473 "Unable to adjust backlight power, error code %i\n",
476 if (use_alt_lcd_levels)
477 ret = set_lcd_level_alt(b->props.brightness);
479 ret = set_lcd_level(b->props.brightness);
481 vdbg_printk(FUJLAPTOP_DBG_ERROR,
482 "Unable to adjust LCD brightness, error code %i\n",
487 static const struct backlight_ops fujitsu_bl_ops = {
488 .get_brightness = bl_get_brightness,
489 .update_status = bl_update_status,
492 /* Platform LCD brightness device */
495 show_max_brightness(struct device *dev,
496 struct device_attribute *attr, char *buf)
501 ret = get_max_brightness();
505 return sprintf(buf, "%i\n", ret);
509 show_brightness_changed(struct device *dev,
510 struct device_attribute *attr, char *buf)
515 ret = fujitsu_bl->brightness_changed;
519 return sprintf(buf, "%i\n", ret);
522 static ssize_t show_lcd_level(struct device *dev,
523 struct device_attribute *attr, char *buf)
528 ret = get_lcd_level();
532 return sprintf(buf, "%i\n", ret);
535 static ssize_t store_lcd_level(struct device *dev,
536 struct device_attribute *attr, const char *buf,
542 if (sscanf(buf, "%i", &level) != 1
543 || (level < 0 || level >= fujitsu_bl->max_brightness))
546 if (use_alt_lcd_levels)
547 ret = set_lcd_level_alt(level);
549 ret = set_lcd_level(level);
553 ret = get_lcd_level();
561 ignore_store(struct device *dev,
562 struct device_attribute *attr, const char *buf, size_t count)
568 show_lid_state(struct device *dev,
569 struct device_attribute *attr, char *buf)
571 if (!(fujitsu_laptop->flags_supported & FLAG_LID))
572 return sprintf(buf, "unknown\n");
573 if (fujitsu_laptop->flags_state & FLAG_LID)
574 return sprintf(buf, "open\n");
576 return sprintf(buf, "closed\n");
580 show_dock_state(struct device *dev,
581 struct device_attribute *attr, char *buf)
583 if (!(fujitsu_laptop->flags_supported & FLAG_DOCK))
584 return sprintf(buf, "unknown\n");
585 if (fujitsu_laptop->flags_state & FLAG_DOCK)
586 return sprintf(buf, "docked\n");
588 return sprintf(buf, "undocked\n");
592 show_radios_state(struct device *dev,
593 struct device_attribute *attr, char *buf)
595 if (!(fujitsu_laptop->flags_supported & FLAG_RFKILL))
596 return sprintf(buf, "unknown\n");
597 if (fujitsu_laptop->flags_state & FLAG_RFKILL)
598 return sprintf(buf, "on\n");
600 return sprintf(buf, "killed\n");
603 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
604 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
606 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
607 static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
608 static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
609 static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
611 static struct attribute *fujitsu_pf_attributes[] = {
612 &dev_attr_brightness_changed.attr,
613 &dev_attr_max_brightness.attr,
614 &dev_attr_lcd_level.attr,
617 &dev_attr_radios.attr,
621 static struct attribute_group fujitsu_pf_attribute_group = {
622 .attrs = fujitsu_pf_attributes
625 static struct platform_driver fujitsu_pf_driver = {
627 .name = "fujitsu-laptop",
631 static void __init dmi_check_cb_common(const struct dmi_system_id *id)
633 pr_info("Identified laptop model '%s'\n", id->ident);
636 static int __init dmi_check_cb_s6410(const struct dmi_system_id *id)
638 dmi_check_cb_common(id);
639 fujitsu_bl->keycode1 = KEY_SCREENLOCK; /* "Lock" */
640 fujitsu_bl->keycode2 = KEY_HELP; /* "Mobility Center" */
644 static int __init dmi_check_cb_s6420(const struct dmi_system_id *id)
646 dmi_check_cb_common(id);
647 fujitsu_bl->keycode1 = KEY_SCREENLOCK; /* "Lock" */
648 fujitsu_bl->keycode2 = KEY_HELP; /* "Mobility Center" */
652 static int __init dmi_check_cb_p8010(const struct dmi_system_id *id)
654 dmi_check_cb_common(id);
655 fujitsu_bl->keycode1 = KEY_HELP; /* "Support" */
656 fujitsu_bl->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
657 fujitsu_bl->keycode4 = KEY_WWW; /* "Internet" */
661 static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
663 .ident = "Fujitsu Siemens S6410",
665 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
666 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
668 .callback = dmi_check_cb_s6410},
670 .ident = "Fujitsu Siemens S6420",
672 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
673 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
675 .callback = dmi_check_cb_s6420},
677 .ident = "Fujitsu LifeBook P8010",
679 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
680 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
682 .callback = dmi_check_cb_p8010},
686 /* ACPI device for LCD brightness control */
688 static int acpi_fujitsu_bl_add(struct acpi_device *device)
691 struct input_dev *input;
697 fujitsu_bl->acpi_handle = device->handle;
698 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_BL_DEVICE_NAME);
699 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
700 device->driver_data = fujitsu_bl;
702 fujitsu_bl->input = input = input_allocate_device();
708 snprintf(fujitsu_bl->phys, sizeof(fujitsu_bl->phys),
709 "%s/video/input0", acpi_device_hid(device));
711 input->name = acpi_device_name(device);
712 input->phys = fujitsu_bl->phys;
713 input->id.bustype = BUS_HOST;
714 input->id.product = 0x06;
715 input->dev.parent = &device->dev;
716 input->evbit[0] = BIT(EV_KEY);
717 set_bit(KEY_BRIGHTNESSUP, input->keybit);
718 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
719 set_bit(KEY_UNKNOWN, input->keybit);
721 error = input_register_device(input);
723 goto err_free_input_dev;
725 error = acpi_bus_update_power(fujitsu_bl->acpi_handle, &state);
727 pr_err("Error reading power state\n");
728 goto err_unregister_input_dev;
731 pr_info("ACPI: %s [%s] (%s)\n",
732 acpi_device_name(device), acpi_device_bid(device),
733 !device->power.state ? "on" : "off");
735 fujitsu_bl->dev = device;
737 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
738 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
740 (acpi_evaluate_object
741 (device->handle, METHOD_NAME__INI, NULL, NULL)))
742 pr_err("_INI Method failed\n");
745 if (use_alt_lcd_levels == -1) {
746 if (acpi_has_method(NULL, "\\_SB.PCI0.LPCB.FJEX.SBL2"))
747 use_alt_lcd_levels = 1;
749 use_alt_lcd_levels = 0;
750 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as %i\n",
754 /* do config (detect defaults) */
755 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
756 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
757 vdbg_printk(FUJLAPTOP_DBG_INFO,
758 "config: [alt interface: %d], [adjust disable: %d]\n",
759 use_alt_lcd_levels, disable_brightness_adjust);
761 if (get_max_brightness() <= 0)
762 fujitsu_bl->max_brightness = FUJITSU_LCD_N_LEVELS;
767 err_unregister_input_dev:
768 input_unregister_device(input);
771 input_free_device(input);
776 static int acpi_fujitsu_bl_remove(struct acpi_device *device)
778 struct fujitsu_bl *fujitsu_bl = acpi_driver_data(device);
779 struct input_dev *input = fujitsu_bl->input;
781 input_unregister_device(input);
783 fujitsu_bl->acpi_handle = NULL;
788 /* Brightness notify */
790 static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
792 struct input_dev *input;
796 input = fujitsu_bl->input;
799 case ACPI_FUJITSU_NOTIFY_CODE1:
801 oldb = fujitsu_bl->brightness_level;
803 newb = fujitsu_bl->brightness_level;
805 vdbg_printk(FUJLAPTOP_DBG_TRACE,
806 "brightness button event [%i -> %i (%i)]\n",
807 oldb, newb, fujitsu_bl->brightness_changed);
810 if (disable_brightness_adjust != 1) {
811 if (use_alt_lcd_levels)
812 set_lcd_level_alt(newb);
816 keycode = KEY_BRIGHTNESSUP;
817 } else if (oldb > newb) {
818 if (disable_brightness_adjust != 1) {
819 if (use_alt_lcd_levels)
820 set_lcd_level_alt(newb);
824 keycode = KEY_BRIGHTNESSDOWN;
828 keycode = KEY_UNKNOWN;
829 vdbg_printk(FUJLAPTOP_DBG_WARN,
830 "unsupported event [0x%x]\n", event);
835 input_report_key(input, keycode, 1);
837 input_report_key(input, keycode, 0);
842 /* ACPI device for hotkey handling */
844 static int acpi_fujitsu_laptop_add(struct acpi_device *device)
848 struct input_dev *input;
855 fujitsu_laptop->acpi_handle = device->handle;
856 sprintf(acpi_device_name(device), "%s",
857 ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
858 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
859 device->driver_data = fujitsu_laptop;
862 spin_lock_init(&fujitsu_laptop->fifo_lock);
863 error = kfifo_alloc(&fujitsu_laptop->fifo, RINGBUFFERSIZE * sizeof(int),
866 pr_err("kfifo_alloc failed\n");
870 fujitsu_laptop->input = input = input_allocate_device();
876 snprintf(fujitsu_laptop->phys, sizeof(fujitsu_laptop->phys),
877 "%s/video/input0", acpi_device_hid(device));
879 input->name = acpi_device_name(device);
880 input->phys = fujitsu_laptop->phys;
881 input->id.bustype = BUS_HOST;
882 input->id.product = 0x06;
883 input->dev.parent = &device->dev;
885 set_bit(EV_KEY, input->evbit);
886 set_bit(fujitsu_bl->keycode1, input->keybit);
887 set_bit(fujitsu_bl->keycode2, input->keybit);
888 set_bit(fujitsu_bl->keycode3, input->keybit);
889 set_bit(fujitsu_bl->keycode4, input->keybit);
890 set_bit(fujitsu_bl->keycode5, input->keybit);
891 set_bit(KEY_TOUCHPAD_TOGGLE, input->keybit);
892 set_bit(KEY_UNKNOWN, input->keybit);
894 error = input_register_device(input);
896 goto err_free_input_dev;
898 error = acpi_bus_update_power(fujitsu_laptop->acpi_handle, &state);
900 pr_err("Error reading power state\n");
901 goto err_unregister_input_dev;
904 pr_info("ACPI: %s [%s] (%s)\n",
905 acpi_device_name(device), acpi_device_bid(device),
906 !device->power.state ? "on" : "off");
908 fujitsu_laptop->dev = device;
910 if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
911 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
913 (acpi_evaluate_object
914 (device->handle, METHOD_NAME__INI, NULL, NULL)))
915 pr_err("_INI Method failed\n");
919 while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
920 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
921 ; /* No action, result is discarded */
922 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
924 fujitsu_laptop->flags_supported =
925 call_fext_func(FUNC_FLAGS, 0x0, 0x0, 0x0);
927 /* Make sure our bitmask of supported functions is cleared if the
928 RFKILL function block is not implemented, like on the S7020. */
929 if (fujitsu_laptop->flags_supported == UNSUPPORTED_CMD)
930 fujitsu_laptop->flags_supported = 0;
932 if (fujitsu_laptop->flags_supported)
933 fujitsu_laptop->flags_state =
934 call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0);
936 /* Suspect this is a keymap of the application panel, print it */
937 pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
939 #if IS_ENABLED(CONFIG_LEDS_CLASS)
940 if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
941 result = led_classdev_register(&fujitsu_bl->pf_device->dev,
944 fujitsu_laptop->logolamp_registered = 1;
946 pr_err("Could not register LED handler for logo lamp, error %i\n",
951 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
952 (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
953 result = led_classdev_register(&fujitsu_bl->pf_device->dev,
956 fujitsu_laptop->kblamps_registered = 1;
958 pr_err("Could not register LED handler for keyboard lamps, error %i\n",
964 * BTNI bit 24 seems to indicate the presence of a radio toggle
965 * button in place of a slide switch, and all such machines appear
966 * to also have an RF LED. Therefore use bit 24 as an indicator
967 * that an RF LED is present.
969 if (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
970 result = led_classdev_register(&fujitsu_bl->pf_device->dev,
973 fujitsu_laptop->radio_led_registered = 1;
975 pr_err("Could not register LED handler for radio LED, error %i\n",
980 /* Support for eco led is not always signaled in bit corresponding
981 * to the bit used to control the led. According to the DSDT table,
982 * bit 14 seems to indicate presence of said led as well.
983 * Confirm by testing the status.
985 if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
986 (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
987 result = led_classdev_register(&fujitsu_bl->pf_device->dev,
990 fujitsu_laptop->eco_led_registered = 1;
992 pr_err("Could not register LED handler for eco LED, error %i\n",
1000 err_unregister_input_dev:
1001 input_unregister_device(input);
1004 input_free_device(input);
1006 kfifo_free(&fujitsu_laptop->fifo);
1011 static int acpi_fujitsu_laptop_remove(struct acpi_device *device)
1013 struct fujitsu_laptop *fujitsu_laptop = acpi_driver_data(device);
1014 struct input_dev *input = fujitsu_laptop->input;
1016 #if IS_ENABLED(CONFIG_LEDS_CLASS)
1017 if (fujitsu_laptop->logolamp_registered)
1018 led_classdev_unregister(&logolamp_led);
1020 if (fujitsu_laptop->kblamps_registered)
1021 led_classdev_unregister(&kblamps_led);
1023 if (fujitsu_laptop->radio_led_registered)
1024 led_classdev_unregister(&radio_led);
1026 if (fujitsu_laptop->eco_led_registered)
1027 led_classdev_unregister(&eco_led);
1030 input_unregister_device(input);
1032 kfifo_free(&fujitsu_laptop->fifo);
1034 fujitsu_laptop->acpi_handle = NULL;
1039 static void acpi_fujitsu_laptop_press(int keycode)
1041 struct input_dev *input = fujitsu_laptop->input;
1044 status = kfifo_in_locked(&fujitsu_laptop->fifo,
1045 (unsigned char *)&keycode, sizeof(keycode),
1046 &fujitsu_laptop->fifo_lock);
1047 if (status != sizeof(keycode)) {
1048 vdbg_printk(FUJLAPTOP_DBG_WARN,
1049 "Could not push keycode [0x%x]\n", keycode);
1052 input_report_key(input, keycode, 1);
1054 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1055 "Push keycode into ringbuffer [%d]\n", keycode);
1058 static void acpi_fujitsu_laptop_release(void)
1060 struct input_dev *input = fujitsu_laptop->input;
1061 int keycode, status;
1064 status = kfifo_out_locked(&fujitsu_laptop->fifo,
1065 (unsigned char *)&keycode,
1067 &fujitsu_laptop->fifo_lock);
1068 if (status != sizeof(keycode))
1070 input_report_key(input, keycode, 0);
1072 vdbg_printk(FUJLAPTOP_DBG_TRACE,
1073 "Pop keycode from ringbuffer [%d]\n", keycode);
1077 static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
1079 struct input_dev *input;
1081 unsigned int irb = 1;
1084 input = fujitsu_laptop->input;
1086 if (event != ACPI_FUJITSU_NOTIFY_CODE1) {
1087 keycode = KEY_UNKNOWN;
1088 vdbg_printk(FUJLAPTOP_DBG_WARN,
1089 "Unsupported event [0x%x]\n", event);
1090 input_report_key(input, keycode, 1);
1092 input_report_key(input, keycode, 0);
1097 if (fujitsu_laptop->flags_supported)
1098 fujitsu_laptop->flags_state =
1099 call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0);
1103 call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
1104 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
1105 switch (irb & 0x4ff) {
1107 keycode = fujitsu_bl->keycode1;
1110 keycode = fujitsu_bl->keycode2;
1113 keycode = fujitsu_bl->keycode3;
1116 keycode = fujitsu_bl->keycode4;
1119 keycode = fujitsu_bl->keycode5;
1125 vdbg_printk(FUJLAPTOP_DBG_WARN,
1126 "Unknown GIRB result [%x]\n", irb);
1132 acpi_fujitsu_laptop_press(keycode);
1133 else if (keycode == 0)
1134 acpi_fujitsu_laptop_release();
1137 /* On some models (first seen on the Skylake-based Lifebook
1138 * E736/E746/E756), the touchpad toggle hotkey (Fn+F4) is
1139 * handled in software; its state is queried using FUNC_FLAGS
1141 if ((fujitsu_laptop->flags_supported & BIT(26)) &&
1142 (call_fext_func(FUNC_FLAGS, 0x1, 0x0, 0x0) & BIT(26))) {
1143 keycode = KEY_TOUCHPAD_TOGGLE;
1144 input_report_key(input, keycode, 1);
1146 input_report_key(input, keycode, 0);
1152 /* Initialization */
1154 static const struct acpi_device_id fujitsu_bl_device_ids[] = {
1155 {ACPI_FUJITSU_BL_HID, 0},
1159 static struct acpi_driver acpi_fujitsu_bl_driver = {
1160 .name = ACPI_FUJITSU_BL_DRIVER_NAME,
1161 .class = ACPI_FUJITSU_CLASS,
1162 .ids = fujitsu_bl_device_ids,
1164 .add = acpi_fujitsu_bl_add,
1165 .remove = acpi_fujitsu_bl_remove,
1166 .notify = acpi_fujitsu_bl_notify,
1170 static const struct acpi_device_id fujitsu_laptop_device_ids[] = {
1171 {ACPI_FUJITSU_LAPTOP_HID, 0},
1175 static struct acpi_driver acpi_fujitsu_laptop_driver = {
1176 .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME,
1177 .class = ACPI_FUJITSU_CLASS,
1178 .ids = fujitsu_laptop_device_ids,
1180 .add = acpi_fujitsu_laptop_add,
1181 .remove = acpi_fujitsu_laptop_remove,
1182 .notify = acpi_fujitsu_laptop_notify,
1186 static const struct acpi_device_id fujitsu_ids[] __used = {
1187 {ACPI_FUJITSU_BL_HID, 0},
1188 {ACPI_FUJITSU_LAPTOP_HID, 0},
1191 MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
1193 static int __init fujitsu_init(void)
1195 int ret, max_brightness;
1200 fujitsu_bl = kzalloc(sizeof(struct fujitsu_bl), GFP_KERNEL);
1203 fujitsu_bl->keycode1 = KEY_PROG1;
1204 fujitsu_bl->keycode2 = KEY_PROG2;
1205 fujitsu_bl->keycode3 = KEY_PROG3;
1206 fujitsu_bl->keycode4 = KEY_PROG4;
1207 fujitsu_bl->keycode5 = KEY_RFKILL;
1208 dmi_check_system(fujitsu_dmi_table);
1210 ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
1214 /* Register platform stuff */
1216 fujitsu_bl->pf_device = platform_device_alloc("fujitsu-laptop", -1);
1217 if (!fujitsu_bl->pf_device) {
1219 goto fail_platform_driver;
1222 ret = platform_device_add(fujitsu_bl->pf_device);
1224 goto fail_platform_device1;
1227 sysfs_create_group(&fujitsu_bl->pf_device->dev.kobj,
1228 &fujitsu_pf_attribute_group);
1230 goto fail_platform_device2;
1232 /* Register backlight stuff */
1234 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1235 struct backlight_properties props;
1237 memset(&props, 0, sizeof(struct backlight_properties));
1238 max_brightness = fujitsu_bl->max_brightness;
1239 props.type = BACKLIGHT_PLATFORM;
1240 props.max_brightness = max_brightness - 1;
1241 fujitsu_bl->bl_device = backlight_device_register("fujitsu-laptop",
1245 if (IS_ERR(fujitsu_bl->bl_device)) {
1246 ret = PTR_ERR(fujitsu_bl->bl_device);
1247 fujitsu_bl->bl_device = NULL;
1248 goto fail_sysfs_group;
1250 fujitsu_bl->bl_device->props.brightness = fujitsu_bl->brightness_level;
1253 ret = platform_driver_register(&fujitsu_pf_driver);
1255 goto fail_backlight;
1257 /* Register laptop driver */
1259 fujitsu_laptop = kzalloc(sizeof(struct fujitsu_laptop), GFP_KERNEL);
1260 if (!fujitsu_laptop) {
1265 ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver);
1269 /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
1270 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1271 if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
1272 fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
1274 fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;
1277 pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n");
1282 kfree(fujitsu_laptop);
1284 platform_driver_unregister(&fujitsu_pf_driver);
1286 backlight_device_unregister(fujitsu_bl->bl_device);
1288 sysfs_remove_group(&fujitsu_bl->pf_device->dev.kobj,
1289 &fujitsu_pf_attribute_group);
1290 fail_platform_device2:
1291 platform_device_del(fujitsu_bl->pf_device);
1292 fail_platform_device1:
1293 platform_device_put(fujitsu_bl->pf_device);
1294 fail_platform_driver:
1295 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1302 static void __exit fujitsu_cleanup(void)
1304 acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver);
1306 kfree(fujitsu_laptop);
1308 platform_driver_unregister(&fujitsu_pf_driver);
1310 backlight_device_unregister(fujitsu_bl->bl_device);
1312 sysfs_remove_group(&fujitsu_bl->pf_device->dev.kobj,
1313 &fujitsu_pf_attribute_group);
1315 platform_device_unregister(fujitsu_bl->pf_device);
1317 acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
1321 pr_info("driver unloaded\n");
1324 module_init(fujitsu_init);
1325 module_exit(fujitsu_cleanup);
1327 module_param(use_alt_lcd_levels, uint, 0644);
1328 MODULE_PARM_DESC(use_alt_lcd_levels,
1329 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1330 module_param(disable_brightness_adjust, uint, 0644);
1331 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1332 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1333 module_param_named(debug, dbg_level, uint, 0644);
1334 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1337 MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
1338 MODULE_DESCRIPTION("Fujitsu laptop extras support");
1339 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1340 MODULE_LICENSE("GPL");