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");