2 * asus_acpi.c - Asus Laptop ACPI Extras
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * The development page for this driver is located at
23 * http://sourceforge.net/projects/acpi4asus/
26 * Pontus Fuchs - Helper functions, cleanup
27 * Johann Wiesner - Small compile fixes
28 * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
29 * Éric Burghard - LED display support for W1N
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/types.h>
37 #include <linux/proc_fs.h>
38 #include <linux/backlight.h>
39 #include <acpi/acpi_drivers.h>
40 #include <acpi/acpi_bus.h>
41 #include <asm/uaccess.h>
43 #define ASUS_ACPI_VERSION "0.30"
45 #define PROC_ASUS "asus" //the directory
46 #define PROC_MLED "mled"
47 #define PROC_WLED "wled"
48 #define PROC_TLED "tled"
49 #define PROC_BT "bluetooth"
50 #define PROC_LEDD "ledd"
51 #define PROC_INFO "info"
52 #define PROC_LCD "lcd"
53 #define PROC_BRN "brn"
54 #define PROC_DISP "disp"
56 #define ACPI_HOTK_NAME "Asus Laptop ACPI Extras Driver"
57 #define ACPI_HOTK_CLASS "hotkey"
58 #define ACPI_HOTK_DEVICE_NAME "Hotkey"
59 #define ACPI_HOTK_HID "ATK0100"
62 * Some events we use, same for all Asus
68 * Flags for hotk status
70 #define MLED_ON 0x01 //mail LED
71 #define WLED_ON 0x02 //wireless LED
72 #define TLED_ON 0x04 //touchpad LED
73 #define BT_ON 0x08 //internal Bluetooth
75 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
76 MODULE_DESCRIPTION(ACPI_HOTK_NAME
);
77 MODULE_LICENSE("GPL");
79 static uid_t asus_uid
;
80 static gid_t asus_gid
;
81 module_param(asus_uid
, uint
, 0);
82 MODULE_PARM_DESC(asus_uid
, "UID for entries in /proc/acpi/asus.\n");
83 module_param(asus_gid
, uint
, 0);
84 MODULE_PARM_DESC(asus_gid
, "GID for entries in /proc/acpi/asus.\n");
86 /* For each model, all features implemented,
87 * those marked with R are relative to HOTK, A for absolute */
89 char *name
; //name of the laptop________________A
90 char *mt_mled
; //method to handle mled_____________R
91 char *mled_status
; //node to handle mled reading_______A
92 char *mt_wled
; //method to handle wled_____________R
93 char *wled_status
; //node to handle wled reading_______A
94 char *mt_tled
; //method to handle tled_____________R
95 char *tled_status
; //node to handle tled reading_______A
96 char *mt_ledd
; //method to handle LED display______R
97 char *mt_bt_switch
; //method to switch Bluetooth on/off_R
98 char *bt_status
; //no model currently supports this__?
99 char *mt_lcd_switch
; //method to turn LCD on/off_________A
100 char *lcd_status
; //node to read LCD panel state______A
101 char *brightness_up
; //method to set brightness up_______A
102 char *brightness_down
; //guess what ?______________________A
103 char *brightness_set
; //method to set absolute brightness_R
104 char *brightness_get
; //method to get absolute brightness_R
105 char *brightness_status
; //node to get brightness____________A
106 char *display_set
; //method to set video output________R
107 char *display_get
; //method to get video output________R
111 * This is the main structure, we can use it to store anything interesting
112 * about the hotk device
115 struct acpi_device
*device
; //the device we are in
116 acpi_handle handle
; //the handle of the hotk device
117 char status
; //status of the hotk, for LEDs, ...
118 u32 ledd_status
; //status of the LED display
119 struct model_data
*methods
; //methods available on the laptop
120 u8 brightness
; //brightness level
122 A1x
= 0, //A1340D, A1300F
129 L3H
, //L3H, L2000E, L5D
134 M2E
, //M2400E, L4400L
135 M6N
, //M6800N, W3400N
136 M6R
, //M6700R, A3000G
138 S1x
, //S1300A, but also L1400B and M2400A (L84F)
139 S2x
, //S200 (J1 reported), Victor MP-XP7210
143 xxN
, //M2400N, M3700N, M5200N, M6800N, S1300N, S5200N
146 } model
; //Models currently supported
147 u16 event_count
[128]; //count for each event TODO make this better
151 #define A1x_PREFIX "\\_SB.PCI0.ISA.EC0."
152 #define L3C_PREFIX "\\_SB.PCI0.PX40.ECD0."
153 #define M1A_PREFIX "\\_SB.PCI0.PX40.EC0."
154 #define P30_PREFIX "\\_SB.PCI0.LPCB.EC0."
155 #define S1x_PREFIX "\\_SB.PCI0.PX40."
156 #define S2x_PREFIX A1x_PREFIX
157 #define xxN_PREFIX "\\_SB.PCI0.SBRG.EC0."
159 static struct model_data model_conf
[END_MODEL
] = {
161 * TODO I have seen a SWBX and AIBX method on some models, like L1400B,
162 * it seems to be a kind of switch, but what for ?
168 .mled_status
= "\\MAIL",
169 .mt_lcd_switch
= A1x_PREFIX
"_Q10",
170 .lcd_status
= "\\BKLI",
171 .brightness_up
= A1x_PREFIX
"_Q0E",
172 .brightness_down
= A1x_PREFIX
"_Q0F"},
178 .wled_status
= "\\SG66",
179 .mt_lcd_switch
= "\\Q10",
180 .lcd_status
= "\\BAOF",
181 .brightness_set
= "SPLV",
182 .brightness_get
= "GPLV",
183 .display_set
= "SDSP",
184 .display_get
= "\\INFB"},
189 /* WLED present, but not controlled by ACPI */
190 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
191 .brightness_set
= "SPLV",
192 .brightness_get
= "GPLV",
193 .display_set
= "SDSP",
194 .display_get
= "\\ADVG"},
199 .mt_lcd_switch
= "\\Q0D",
200 .lcd_status
= "\\GP11",
201 .brightness_up
= "\\Q0C",
202 .brightness_down
= "\\Q0B",
203 .brightness_status
= "\\BLVL",
204 .display_set
= "SDSP",
205 .display_get
= "\\INFB"},
210 .mled_status
= "\\SGP6",
212 .wled_status
= "\\RCP3",
213 .mt_lcd_switch
= "\\Q10",
214 .lcd_status
= "\\SGP0",
215 .brightness_up
= "\\Q0E",
216 .brightness_down
= "\\Q0F",
217 .display_set
= "SDSP",
218 .display_get
= "\\INFB"},
224 .mt_lcd_switch
= L3C_PREFIX
"_Q10",
225 .lcd_status
= "\\GL32",
226 .brightness_set
= "SPLV",
227 .brightness_get
= "GPLV",
228 .display_set
= "SDSP",
229 .display_get
= "\\_SB.PCI0.PCI1.VGAC.NMAP"},
234 .mled_status
= "\\MALD",
236 .mt_lcd_switch
= "\\Q10",
237 .lcd_status
= "\\BKLG",
238 .brightness_set
= "SPLV",
239 .brightness_get
= "GPLV",
240 .display_set
= "SDSP",
241 .display_get
= "\\INFB"},
247 .mt_lcd_switch
= "EHK",
248 .lcd_status
= "\\_SB.PCI0.PM.PBC",
249 .brightness_set
= "SPLV",
250 .brightness_get
= "GPLV",
251 .display_set
= "SDSP",
252 .display_get
= "\\INFB"},
258 .wled_status
= "\\_SB.PCI0.SBRG.SG13",
259 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
260 .lcd_status
= "\\_SB.PCI0.SBSM.SEO4",
261 .brightness_set
= "SPLV",
262 .brightness_get
= "GPLV",
263 .display_set
= "SDSP",
264 .display_get
= "\\_SB.PCI0.P0P1.VGA.GETD"},
269 /* WLED present, but not controlled by ACPI */
271 .mt_lcd_switch
= "\\Q0D",
272 .lcd_status
= "\\BAOF",
273 .brightness_set
= "SPLV",
274 .brightness_get
= "GPLV",
275 .display_set
= "SDSP",
276 .display_get
= "\\INFB"},
280 /* No features, but at least support the hotkeys */
286 .mt_lcd_switch
= M1A_PREFIX
"Q10",
287 .lcd_status
= "\\PNOF",
288 .brightness_up
= M1A_PREFIX
"Q0E",
289 .brightness_down
= M1A_PREFIX
"Q0F",
290 .brightness_status
= "\\BRIT",
291 .display_set
= "SDSP",
292 .display_get
= "\\INFB"},
298 .mt_lcd_switch
= "\\Q10",
299 .lcd_status
= "\\GP06",
300 .brightness_set
= "SPLV",
301 .brightness_get
= "GPLV",
302 .display_set
= "SDSP",
303 .display_get
= "\\INFB"},
309 .wled_status
= "\\_SB.PCI0.SBRG.SG13",
310 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
311 .lcd_status
= "\\_SB.BKLT",
312 .brightness_set
= "SPLV",
313 .brightness_get
= "GPLV",
314 .display_set
= "SDSP",
315 .display_get
= "\\SSTE"},
321 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
322 .lcd_status
= "\\_SB.PCI0.SBSM.SEO4",
323 .brightness_set
= "SPLV",
324 .brightness_get
= "GPLV",
325 .display_set
= "SDSP",
326 .display_get
= "\\_SB.PCI0.P0P1.VGA.GETD"},
331 .mt_lcd_switch
= P30_PREFIX
"_Q0E",
332 .lcd_status
= "\\BKLT",
333 .brightness_up
= P30_PREFIX
"_Q68",
334 .brightness_down
= P30_PREFIX
"_Q69",
335 .brightness_get
= "GPLV",
336 .display_set
= "SDSP",
337 .display_get
= "\\DNXT"},
342 .mled_status
= "\\EMLE",
344 .mt_lcd_switch
= S1x_PREFIX
"Q10",
345 .lcd_status
= "\\PNOF",
346 .brightness_set
= "SPLV",
347 .brightness_get
= "GPLV"},
352 .mled_status
= "\\MAIL",
353 .mt_lcd_switch
= S2x_PREFIX
"_Q10",
354 .lcd_status
= "\\BKLI",
355 .brightness_up
= S2x_PREFIX
"_Q0B",
356 .brightness_down
= S2x_PREFIX
"_Q0A"},
363 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
364 .lcd_status
= "\\BKLT",
365 .brightness_set
= "SPLV",
366 .brightness_get
= "GPLV",
367 .display_set
= "SDSP",
368 .display_get
= "\\ADVG"},
372 .mt_bt_switch
= "BLED",
374 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
375 .brightness_set
= "SPLV",
376 .brightness_get
= "GPLV",
377 .display_set
= "SDSP",
378 .display_get
= "\\ADVG"},
384 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
385 .lcd_status
= "\\BKLT",
386 .brightness_set
= "SPLV",
387 .brightness_get
= "GPLV",
388 .display_set
= "SDSP",
389 .display_get
= "\\INFB"},
394 /* WLED present, but not controlled by ACPI */
395 .mt_lcd_switch
= xxN_PREFIX
"_Q10",
396 .lcd_status
= "\\BKLT",
397 .brightness_set
= "SPLV",
398 .brightness_get
= "GPLV",
399 .display_set
= "SDSP",
400 .display_get
= "\\ADVG"}
404 static struct proc_dir_entry
*asus_proc_dir
;
406 static struct backlight_device
*asus_backlight_device
;
409 * This header is made available to allow proper configuration given model,
410 * revision number , ... this info cannot go in struct asus_hotk because it is
411 * available before the hotk
413 static struct acpi_table_header
*asus_info
;
415 /* The actual device the driver binds to */
416 static struct asus_hotk
*hotk
;
419 * The hotkey driver declaration
421 static int asus_hotk_add(struct acpi_device
*device
);
422 static int asus_hotk_remove(struct acpi_device
*device
, int type
);
423 static struct acpi_driver asus_hotk_driver
= {
424 .name
= ACPI_HOTK_NAME
,
425 .class = ACPI_HOTK_CLASS
,
426 .ids
= ACPI_HOTK_HID
,
428 .add
= asus_hotk_add
,
429 .remove
= asus_hotk_remove
,
434 * This function evaluates an ACPI method, given an int as parameter, the
435 * method is searched within the scope of the handle, can be NULL. The output
436 * of the method is written is output, which can also be NULL
438 * returns 1 if write is successful, 0 else.
440 static int write_acpi_int(acpi_handle handle
, const char *method
, int val
,
441 struct acpi_buffer
*output
)
443 struct acpi_object_list params
; //list of input parameters (an int here)
444 union acpi_object in_obj
; //the only param we use
448 params
.pointer
= &in_obj
;
449 in_obj
.type
= ACPI_TYPE_INTEGER
;
450 in_obj
.integer
.value
= val
;
452 status
= acpi_evaluate_object(handle
, (char *)method
, ¶ms
, output
);
453 return (status
== AE_OK
);
456 static int read_acpi_int(acpi_handle handle
, const char *method
, int *val
)
458 struct acpi_buffer output
;
459 union acpi_object out_obj
;
462 output
.length
= sizeof(out_obj
);
463 output
.pointer
= &out_obj
;
465 status
= acpi_evaluate_object(handle
, (char *)method
, NULL
, &output
);
466 *val
= out_obj
.integer
.value
;
467 return (status
== AE_OK
) && (out_obj
.type
== ACPI_TYPE_INTEGER
);
471 * We write our info in page, we begin at offset off and cannot write more
472 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
473 * number of bytes written in page
476 proc_read_info(char *page
, char **start
, off_t off
, int count
, int *eof
,
481 char buf
[16]; //enough for all info
483 * We use the easy way, we don't care of off and count, so we don't set eof
487 len
+= sprintf(page
, ACPI_HOTK_NAME
" " ASUS_ACPI_VERSION
"\n");
488 len
+= sprintf(page
+ len
, "Model reference : %s\n",
489 hotk
->methods
->name
);
491 * The SFUN method probably allows the original driver to get the list
492 * of features supported by a given model. For now, 0x0100 or 0x0800
493 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
494 * The significance of others is yet to be found.
496 if (read_acpi_int(hotk
->handle
, "SFUN", &temp
))
498 sprintf(page
+ len
, "SFUN value : 0x%04x\n", temp
);
500 * Another value for userspace: the ASYM method returns 0x02 for
501 * battery low and 0x04 for battery critical, its readings tend to be
502 * more accurate than those provided by _BST.
503 * Note: since not all the laptops provide this method, errors are
506 if (read_acpi_int(hotk
->handle
, "ASYM", &temp
))
508 sprintf(page
+ len
, "ASYM value : 0x%04x\n", temp
);
510 snprintf(buf
, 16, "%d", asus_info
->length
);
511 len
+= sprintf(page
+ len
, "DSDT length : %s\n", buf
);
512 snprintf(buf
, 16, "%d", asus_info
->checksum
);
513 len
+= sprintf(page
+ len
, "DSDT checksum : %s\n", buf
);
514 snprintf(buf
, 16, "%d", asus_info
->revision
);
515 len
+= sprintf(page
+ len
, "DSDT revision : %s\n", buf
);
516 snprintf(buf
, 7, "%s", asus_info
->oem_id
);
517 len
+= sprintf(page
+ len
, "OEM id : %s\n", buf
);
518 snprintf(buf
, 9, "%s", asus_info
->oem_table_id
);
519 len
+= sprintf(page
+ len
, "OEM table id : %s\n", buf
);
520 snprintf(buf
, 16, "%x", asus_info
->oem_revision
);
521 len
+= sprintf(page
+ len
, "OEM revision : 0x%s\n", buf
);
522 snprintf(buf
, 5, "%s", asus_info
->asl_compiler_id
);
523 len
+= sprintf(page
+ len
, "ASL comp vendor id : %s\n", buf
);
524 snprintf(buf
, 16, "%x", asus_info
->asl_compiler_revision
);
525 len
+= sprintf(page
+ len
, "ASL comp revision : 0x%s\n", buf
);
533 * We write our info in page, we begin at offset off and cannot write more
534 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
535 * number of bytes written in page
538 /* Generic LED functions */
539 static int read_led(const char *ledname
, int ledmask
)
544 if (read_acpi_int(NULL
, ledname
, &led_status
))
547 printk(KERN_WARNING
"Asus ACPI: Error reading LED "
550 return (hotk
->status
& ledmask
) ? 1 : 0;
553 static int parse_arg(const char __user
* buf
, unsigned long count
, int *val
)
560 if (copy_from_user(s
, buf
, count
))
563 if (sscanf(s
, "%i", val
) != 1)
568 /* FIXME: kill extraneous args so it can be called independently */
570 write_led(const char __user
* buffer
, unsigned long count
,
571 char *ledname
, int ledmask
, int invert
)
576 rv
= parse_arg(buffer
, count
, &value
);
578 led_out
= value
? 1 : 0;
581 (led_out
) ? (hotk
->status
| ledmask
) : (hotk
->status
& ~ledmask
);
583 if (invert
) /* invert target value */
584 led_out
= !led_out
& 0x1;
586 if (!write_acpi_int(hotk
->handle
, ledname
, led_out
, NULL
))
587 printk(KERN_WARNING
"Asus ACPI: LED (%s) write failed\n",
594 * Proc handlers for MLED
597 proc_read_mled(char *page
, char **start
, off_t off
, int count
, int *eof
,
600 return sprintf(page
, "%d\n",
601 read_led(hotk
->methods
->mled_status
, MLED_ON
));
605 proc_write_mled(struct file
*file
, const char __user
* buffer
,
606 unsigned long count
, void *data
)
608 return write_led(buffer
, count
, hotk
->methods
->mt_mled
, MLED_ON
, 1);
612 * Proc handlers for LED display
615 proc_read_ledd(char *page
, char **start
, off_t off
, int count
, int *eof
,
618 return sprintf(page
, "0x%08x\n", hotk
->ledd_status
);
622 proc_write_ledd(struct file
*file
, const char __user
* buffer
,
623 unsigned long count
, void *data
)
627 rv
= parse_arg(buffer
, count
, &value
);
630 (hotk
->handle
, hotk
->methods
->mt_ledd
, value
, NULL
))
632 "Asus ACPI: LED display write failed\n");
634 hotk
->ledd_status
= (u32
) value
;
640 * Proc handlers for WLED
643 proc_read_wled(char *page
, char **start
, off_t off
, int count
, int *eof
,
646 return sprintf(page
, "%d\n",
647 read_led(hotk
->methods
->wled_status
, WLED_ON
));
651 proc_write_wled(struct file
*file
, const char __user
* buffer
,
652 unsigned long count
, void *data
)
654 return write_led(buffer
, count
, hotk
->methods
->mt_wled
, WLED_ON
, 0);
658 * Proc handlers for Bluetooth
661 proc_read_bluetooth(char *page
, char **start
, off_t off
, int count
, int *eof
,
664 return sprintf(page
, "%d\n", read_led(hotk
->methods
->bt_status
, BT_ON
));
668 proc_write_bluetooth(struct file
*file
, const char __user
* buffer
,
669 unsigned long count
, void *data
)
671 /* Note: mt_bt_switch controls both internal Bluetooth adapter's
672 presence and its LED */
673 return write_led(buffer
, count
, hotk
->methods
->mt_bt_switch
, BT_ON
, 0);
677 * Proc handlers for TLED
680 proc_read_tled(char *page
, char **start
, off_t off
, int count
, int *eof
,
683 return sprintf(page
, "%d\n",
684 read_led(hotk
->methods
->tled_status
, TLED_ON
));
688 proc_write_tled(struct file
*file
, const char __user
* buffer
,
689 unsigned long count
, void *data
)
691 return write_led(buffer
, count
, hotk
->methods
->mt_tled
, TLED_ON
, 0);
694 static int get_lcd_state(void)
698 if (hotk
->model
!= L3H
) {
699 /* We don't have to check anything if we are here */
700 if (!read_acpi_int(NULL
, hotk
->methods
->lcd_status
, &lcd
))
702 "Asus ACPI: Error reading LCD status\n");
704 if (hotk
->model
== L2D
)
706 } else { /* L3H and the like have to be handled differently */
707 acpi_status status
= 0;
708 struct acpi_object_list input
;
709 union acpi_object mt_params
[2];
710 struct acpi_buffer output
;
711 union acpi_object out_obj
;
714 input
.pointer
= mt_params
;
715 /* Note: the following values are partly guessed up, but
716 otherwise they seem to work */
717 mt_params
[0].type
= ACPI_TYPE_INTEGER
;
718 mt_params
[0].integer
.value
= 0x02;
719 mt_params
[1].type
= ACPI_TYPE_INTEGER
;
720 mt_params
[1].integer
.value
= 0x02;
722 output
.length
= sizeof(out_obj
);
723 output
.pointer
= &out_obj
;
726 acpi_evaluate_object(NULL
, hotk
->methods
->lcd_status
,
730 if (out_obj
.type
== ACPI_TYPE_INTEGER
)
731 /* That's what the AML code does */
732 lcd
= out_obj
.integer
.value
>> 8;
738 static int set_lcd_state(int value
)
741 acpi_status status
= 0;
744 if (lcd
!= get_lcd_state()) {
746 if (hotk
->model
!= L3H
) {
748 acpi_evaluate_object(NULL
,
749 hotk
->methods
->mt_lcd_switch
,
751 } else { /* L3H and the like have to be handled differently */
753 (hotk
->handle
, hotk
->methods
->mt_lcd_switch
, 0x07,
756 /* L3H's AML executes EHK (0x07) upon Fn+F7 keypress,
757 the exact behaviour is simulated here */
759 if (ACPI_FAILURE(status
))
760 printk(KERN_WARNING
"Asus ACPI: Error switching LCD\n");
767 proc_read_lcd(char *page
, char **start
, off_t off
, int count
, int *eof
,
770 return sprintf(page
, "%d\n", get_lcd_state());
774 proc_write_lcd(struct file
*file
, const char __user
* buffer
,
775 unsigned long count
, void *data
)
779 rv
= parse_arg(buffer
, count
, &value
);
781 set_lcd_state(value
);
785 static int read_brightness(struct backlight_device
*bd
)
789 if (hotk
->methods
->brightness_get
) { /* SPLV/GPLV laptop */
790 if (!read_acpi_int(hotk
->handle
, hotk
->methods
->brightness_get
,
793 "Asus ACPI: Error reading brightness\n");
794 } else if (hotk
->methods
->brightness_status
) { /* For D1 for example */
795 if (!read_acpi_int(NULL
, hotk
->methods
->brightness_status
,
798 "Asus ACPI: Error reading brightness\n");
799 } else /* No GPLV method */
800 value
= hotk
->brightness
;
805 * Change the brightness level
807 static int set_brightness(int value
)
809 acpi_status status
= 0;
813 if (hotk
->methods
->brightness_set
) {
814 if (!write_acpi_int(hotk
->handle
, hotk
->methods
->brightness_set
,
817 "Asus ACPI: Error changing brightness\n");
822 /* No SPLV method if we are here, act as appropriate */
823 value
-= read_brightness(NULL
);
825 status
= acpi_evaluate_object(NULL
, (value
> 0) ?
826 hotk
->methods
->brightness_up
:
827 hotk
->methods
->brightness_down
,
829 (value
> 0) ? value
-- : value
++;
830 if (ACPI_FAILURE(status
))
832 "Asus ACPI: Error changing brightness\n");
839 static int set_brightness_status(struct backlight_device
*bd
)
841 return set_brightness(bd
->props
->brightness
);
845 proc_read_brn(char *page
, char **start
, off_t off
, int count
, int *eof
,
848 return sprintf(page
, "%d\n", read_brightness(NULL
));
852 proc_write_brn(struct file
*file
, const char __user
* buffer
,
853 unsigned long count
, void *data
)
857 rv
= parse_arg(buffer
, count
, &value
);
859 value
= (0 < value
) ? ((15 < value
) ? 15 : value
) : 0;
860 /* 0 <= value <= 15 */
861 set_brightness(value
);
866 static void set_display(int value
)
868 /* no sanity check needed for now */
869 if (!write_acpi_int(hotk
->handle
, hotk
->methods
->display_set
,
871 printk(KERN_WARNING
"Asus ACPI: Error setting display\n");
876 * Now, *this* one could be more user-friendly, but so far, no-one has
877 * complained. The significance of bits is the same as in proc_write_disp()
880 proc_read_disp(char *page
, char **start
, off_t off
, int count
, int *eof
,
885 if (!read_acpi_int(hotk
->handle
, hotk
->methods
->display_get
, &value
))
887 "Asus ACPI: Error reading display status\n");
888 value
&= 0x07; /* needed for some models, shouldn't hurt others */
889 return sprintf(page
, "%d\n", value
);
893 * Experimental support for display switching. As of now: 1 should activate
894 * the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination
895 * (bitwise) of these will suffice. I never actually tested 3 displays hooked up
896 * simultaneously, so be warned. See the acpi4asus README for more info.
899 proc_write_disp(struct file
*file
, const char __user
* buffer
,
900 unsigned long count
, void *data
)
904 rv
= parse_arg(buffer
, count
, &value
);
910 typedef int (proc_readfunc
) (char *page
, char **start
, off_t off
, int count
,
911 int *eof
, void *data
);
912 typedef int (proc_writefunc
) (struct file
* file
, const char __user
* buffer
,
913 unsigned long count
, void *data
);
916 asus_proc_add(char *name
, proc_writefunc
* writefunc
,
917 proc_readfunc
* readfunc
, mode_t mode
,
918 struct acpi_device
*device
)
920 struct proc_dir_entry
*proc
=
921 create_proc_entry(name
, mode
, acpi_device_dir(device
));
923 printk(KERN_WARNING
" Unable to create %s fs entry\n", name
);
926 proc
->write_proc
= writefunc
;
927 proc
->read_proc
= readfunc
;
928 proc
->data
= acpi_driver_data(device
);
929 proc
->owner
= THIS_MODULE
;
930 proc
->uid
= asus_uid
;
931 proc
->gid
= asus_gid
;
935 static int asus_hotk_add_fs(struct acpi_device
*device
)
937 struct proc_dir_entry
*proc
;
941 * If parameter uid or gid is not changed, keep the default setting for
942 * our proc entries (-rw-rw-rw-) else, it means we care about security,
943 * and then set to -rw-rw----
946 if ((asus_uid
== 0) && (asus_gid
== 0)) {
947 mode
= S_IFREG
| S_IRUGO
| S_IWUGO
;
949 mode
= S_IFREG
| S_IRUSR
| S_IRGRP
| S_IWUSR
| S_IWGRP
;
950 printk(KERN_WARNING
" asus_uid and asus_gid parameters are "
951 "deprecated, use chown and chmod instead!\n");
954 acpi_device_dir(device
) = asus_proc_dir
;
955 if (!acpi_device_dir(device
))
958 proc
= create_proc_entry(PROC_INFO
, mode
, acpi_device_dir(device
));
960 proc
->read_proc
= proc_read_info
;
961 proc
->data
= acpi_driver_data(device
);
962 proc
->owner
= THIS_MODULE
;
963 proc
->uid
= asus_uid
;
964 proc
->gid
= asus_gid
;
966 printk(KERN_WARNING
" Unable to create " PROC_INFO
970 if (hotk
->methods
->mt_wled
) {
971 asus_proc_add(PROC_WLED
, &proc_write_wled
, &proc_read_wled
,
975 if (hotk
->methods
->mt_ledd
) {
976 asus_proc_add(PROC_LEDD
, &proc_write_ledd
, &proc_read_ledd
,
980 if (hotk
->methods
->mt_mled
) {
981 asus_proc_add(PROC_MLED
, &proc_write_mled
, &proc_read_mled
,
985 if (hotk
->methods
->mt_tled
) {
986 asus_proc_add(PROC_TLED
, &proc_write_tled
, &proc_read_tled
,
990 if (hotk
->methods
->mt_bt_switch
) {
991 asus_proc_add(PROC_BT
, &proc_write_bluetooth
,
992 &proc_read_bluetooth
, mode
, device
);
996 * We need both read node and write method as LCD switch is also accessible
999 if (hotk
->methods
->mt_lcd_switch
&& hotk
->methods
->lcd_status
) {
1000 asus_proc_add(PROC_LCD
, &proc_write_lcd
, &proc_read_lcd
, mode
,
1004 if ((hotk
->methods
->brightness_up
&& hotk
->methods
->brightness_down
) ||
1005 (hotk
->methods
->brightness_get
&& hotk
->methods
->brightness_set
)) {
1006 asus_proc_add(PROC_BRN
, &proc_write_brn
, &proc_read_brn
, mode
,
1010 if (hotk
->methods
->display_set
) {
1011 asus_proc_add(PROC_DISP
, &proc_write_disp
, &proc_read_disp
,
1018 static int asus_hotk_remove_fs(struct acpi_device
*device
)
1020 if (acpi_device_dir(device
)) {
1021 remove_proc_entry(PROC_INFO
, acpi_device_dir(device
));
1022 if (hotk
->methods
->mt_wled
)
1023 remove_proc_entry(PROC_WLED
, acpi_device_dir(device
));
1024 if (hotk
->methods
->mt_mled
)
1025 remove_proc_entry(PROC_MLED
, acpi_device_dir(device
));
1026 if (hotk
->methods
->mt_tled
)
1027 remove_proc_entry(PROC_TLED
, acpi_device_dir(device
));
1028 if (hotk
->methods
->mt_ledd
)
1029 remove_proc_entry(PROC_LEDD
, acpi_device_dir(device
));
1030 if (hotk
->methods
->mt_bt_switch
)
1031 remove_proc_entry(PROC_BT
, acpi_device_dir(device
));
1032 if (hotk
->methods
->mt_lcd_switch
&& hotk
->methods
->lcd_status
)
1033 remove_proc_entry(PROC_LCD
, acpi_device_dir(device
));
1034 if ((hotk
->methods
->brightness_up
1035 && hotk
->methods
->brightness_down
)
1036 || (hotk
->methods
->brightness_get
1037 && hotk
->methods
->brightness_set
))
1038 remove_proc_entry(PROC_BRN
, acpi_device_dir(device
));
1039 if (hotk
->methods
->display_set
)
1040 remove_proc_entry(PROC_DISP
, acpi_device_dir(device
));
1045 static void asus_hotk_notify(acpi_handle handle
, u32 event
, void *data
)
1047 /* TODO Find a better way to handle events count. */
1051 if ((event
& ~((u32
) BR_UP
)) < 16) {
1052 hotk
->brightness
= (event
& ~((u32
) BR_UP
));
1053 } else if ((event
& ~((u32
) BR_DOWN
)) < 16) {
1054 hotk
->brightness
= (event
& ~((u32
) BR_DOWN
));
1057 acpi_bus_generate_event(hotk
->device
, event
,
1058 hotk
->event_count
[event
% 128]++);
1064 * Match the model string to the list of supported models. Return END_MODEL if
1065 * no match or model is NULL.
1067 static int asus_model_match(char *model
)
1072 if (strncmp(model
, "L3D", 3) == 0)
1074 else if (strncmp(model
, "L2E", 3) == 0 ||
1075 strncmp(model
, "L3H", 3) == 0 || strncmp(model
, "L5D", 3) == 0)
1077 else if (strncmp(model
, "L3", 2) == 0 || strncmp(model
, "L2B", 3) == 0)
1079 else if (strncmp(model
, "L8L", 3) == 0)
1081 else if (strncmp(model
, "L4R", 3) == 0)
1083 else if (strncmp(model
, "M6N", 3) == 0 || strncmp(model
, "W3N", 3) == 0)
1085 else if (strncmp(model
, "M6R", 3) == 0 || strncmp(model
, "A3G", 3) == 0)
1087 else if (strncmp(model
, "M2N", 3) == 0 ||
1088 strncmp(model
, "M3N", 3) == 0 ||
1089 strncmp(model
, "M5N", 3) == 0 ||
1090 strncmp(model
, "M6N", 3) == 0 ||
1091 strncmp(model
, "S1N", 3) == 0 ||
1092 strncmp(model
, "S5N", 3) == 0 || strncmp(model
, "W1N", 3) == 0)
1094 else if (strncmp(model
, "M1", 2) == 0)
1096 else if (strncmp(model
, "M2", 2) == 0 || strncmp(model
, "L4E", 3) == 0)
1098 else if (strncmp(model
, "L2", 2) == 0)
1100 else if (strncmp(model
, "L8", 2) == 0)
1102 else if (strncmp(model
, "D1", 2) == 0)
1104 else if (strncmp(model
, "A1", 2) == 0)
1106 else if (strncmp(model
, "A2", 2) == 0)
1108 else if (strncmp(model
, "J1", 2) == 0)
1110 else if (strncmp(model
, "L5", 2) == 0)
1112 else if (strncmp(model
, "A4G", 3) == 0)
1114 else if (strncmp(model
, "W1N", 3) == 0)
1116 else if (strncmp(model
, "W3V", 3) == 0)
1118 else if (strncmp(model
, "W5A", 3) == 0)
1125 * This function is used to initialize the hotk with right values. In this
1126 * method, we can make all the detection we want, and modify the hotk struct
1128 static int asus_hotk_get_info(void)
1130 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
1131 struct acpi_buffer dsdt
= { ACPI_ALLOCATE_BUFFER
, NULL
};
1132 union acpi_object
*model
= NULL
;
1134 char *string
= NULL
;
1138 * Get DSDT headers early enough to allow for differentiating between
1139 * models, but late enough to allow acpi_bus_register_driver() to fail
1140 * before doing anything ACPI-specific. Should we encounter a machine,
1141 * which needs special handling (i.e. its hotkey device has a different
1142 * HID), this bit will be moved. A global variable asus_info contains
1145 status
= acpi_get_table(ACPI_TABLE_ID_DSDT
, 1, &dsdt
);
1146 if (ACPI_FAILURE(status
))
1147 printk(KERN_WARNING
" Couldn't get the DSDT table header\n");
1149 asus_info
= dsdt
.pointer
;
1151 /* We have to write 0 on init this far for all ASUS models */
1152 if (!write_acpi_int(hotk
->handle
, "INIT", 0, &buffer
)) {
1153 printk(KERN_ERR
" Hotkey initialization failed\n");
1157 /* This needs to be called for some laptops to init properly */
1158 if (!read_acpi_int(hotk
->handle
, "BSTS", &bsts_result
))
1159 printk(KERN_WARNING
" Error calling BSTS\n");
1160 else if (bsts_result
)
1161 printk(KERN_NOTICE
" BSTS called, 0x%02x returned\n",
1165 * Try to match the object returned by INIT to the specific model.
1166 * Handle every possible object (or the lack of thereof) the DSDT
1167 * writers might throw at us. When in trouble, we pass NULL to
1168 * asus_model_match() and try something completely different.
1170 if (buffer
.pointer
) {
1171 model
= buffer
.pointer
;
1172 switch (model
->type
) {
1173 case ACPI_TYPE_STRING
:
1174 string
= model
->string
.pointer
;
1176 case ACPI_TYPE_BUFFER
:
1177 string
= model
->buffer
.pointer
;
1184 hotk
->model
= asus_model_match(string
);
1185 if (hotk
->model
== END_MODEL
) { /* match failed */
1187 strncmp(asus_info
->oem_table_id
, "ODEM", 4) == 0) {
1190 " Samsung P30 detected, supported\n");
1193 printk(KERN_NOTICE
" unsupported model %s, trying "
1194 "default values\n", string
);
1196 " send /proc/acpi/dsdt to the developers\n");
1198 hotk
->methods
= &model_conf
[hotk
->model
];
1201 hotk
->methods
= &model_conf
[hotk
->model
];
1202 printk(KERN_NOTICE
" %s model detected, supported\n", string
);
1204 /* Sort of per-model blacklist */
1205 if (strncmp(string
, "L2B", 3) == 0)
1206 hotk
->methods
->lcd_status
= NULL
;
1207 /* L2B is similar enough to L3C to use its settings, with this only
1209 else if (strncmp(string
, "A3G", 3) == 0)
1210 hotk
->methods
->lcd_status
= "\\BLFG";
1211 /* A3G is like M6R */
1212 else if (strncmp(string
, "S5N", 3) == 0 ||
1213 strncmp(string
, "M5N", 3) == 0 ||
1214 strncmp(string
, "W3N", 3) == 0)
1215 hotk
->methods
->mt_mled
= NULL
;
1216 /* S5N, M5N and W3N have no MLED */
1217 else if (strncmp(string
, "L5D", 3) == 0)
1218 hotk
->methods
->mt_wled
= NULL
;
1219 /* L5D's WLED is not controlled by ACPI */
1220 else if (strncmp(string
, "M2N", 3) == 0 ||
1221 strncmp(string
, "W3V", 3) == 0 ||
1222 strncmp(string
, "S1N", 3) == 0)
1223 hotk
->methods
->mt_wled
= "WLED";
1224 /* M2N, S1N and W3V have a usable WLED */
1225 else if (asus_info
) {
1226 if (strncmp(asus_info
->oem_table_id
, "L1", 2) == 0)
1227 hotk
->methods
->mled_status
= NULL
;
1228 /* S1300A reports L84F, but L1400B too, account for that */
1236 static int asus_hotk_check(void)
1240 result
= acpi_bus_get_status(hotk
->device
);
1244 if (hotk
->device
->status
.present
) {
1245 result
= asus_hotk_get_info();
1247 printk(KERN_ERR
" Hotkey device not present, aborting\n");
1254 static int asus_hotk_found
;
1256 static int asus_hotk_add(struct acpi_device
*device
)
1258 acpi_status status
= AE_OK
;
1264 printk(KERN_NOTICE
"Asus Laptop ACPI Extras version %s\n",
1267 hotk
= kzalloc(sizeof(struct asus_hotk
), GFP_KERNEL
);
1271 hotk
->handle
= device
->handle
;
1272 strcpy(acpi_device_name(device
), ACPI_HOTK_DEVICE_NAME
);
1273 strcpy(acpi_device_class(device
), ACPI_HOTK_CLASS
);
1274 acpi_driver_data(device
) = hotk
;
1275 hotk
->device
= device
;
1277 result
= asus_hotk_check();
1281 result
= asus_hotk_add_fs(device
);
1286 * We install the handler, it will receive the hotk in parameter, so, we
1287 * could add other data to the hotk struct
1289 status
= acpi_install_notify_handler(hotk
->handle
, ACPI_SYSTEM_NOTIFY
,
1290 asus_hotk_notify
, hotk
);
1291 if (ACPI_FAILURE(status
))
1292 printk(KERN_ERR
" Error installing notify handler\n");
1294 /* For laptops without GPLV: init the hotk->brightness value */
1295 if ((!hotk
->methods
->brightness_get
)
1296 && (!hotk
->methods
->brightness_status
)
1297 && (hotk
->methods
->brightness_up
&& hotk
->methods
->brightness_down
)) {
1299 acpi_evaluate_object(NULL
, hotk
->methods
->brightness_down
,
1301 if (ACPI_FAILURE(status
))
1302 printk(KERN_WARNING
" Error changing brightness\n");
1305 acpi_evaluate_object(NULL
,
1306 hotk
->methods
->brightness_up
,
1308 if (ACPI_FAILURE(status
))
1309 printk(KERN_WARNING
" Strange, error changing"
1314 asus_hotk_found
= 1;
1316 /* LED display is off by default */
1317 hotk
->ledd_status
= 0xFFF;
1327 static int asus_hotk_remove(struct acpi_device
*device
, int type
)
1329 acpi_status status
= 0;
1331 if (!device
|| !acpi_driver_data(device
))
1334 status
= acpi_remove_notify_handler(hotk
->handle
, ACPI_SYSTEM_NOTIFY
,
1336 if (ACPI_FAILURE(status
))
1337 printk(KERN_ERR
"Asus ACPI: Error removing notify handler\n");
1339 asus_hotk_remove_fs(device
);
1346 static struct backlight_properties asus_backlight_data
= {
1347 .owner
= THIS_MODULE
,
1348 .get_brightness
= read_brightness
,
1349 .update_status
= set_brightness_status
,
1350 .max_brightness
= 15,
1353 static void __exit
asus_acpi_exit(void)
1355 if (asus_backlight_device
)
1356 backlight_device_unregister(asus_backlight_device
);
1358 acpi_bus_unregister_driver(&asus_hotk_driver
);
1359 remove_proc_entry(PROC_ASUS
, acpi_root_dir
);
1366 static int __init
asus_acpi_init(void)
1373 if (!acpi_specific_hotkey_enabled
) {
1374 printk(KERN_ERR
"Using generic hotkey driver\n");
1377 asus_proc_dir
= proc_mkdir(PROC_ASUS
, acpi_root_dir
);
1378 if (!asus_proc_dir
) {
1379 printk(KERN_ERR
"Asus ACPI: Unable to create /proc entry\n");
1382 asus_proc_dir
->owner
= THIS_MODULE
;
1384 result
= acpi_bus_register_driver(&asus_hotk_driver
);
1386 remove_proc_entry(PROC_ASUS
, acpi_root_dir
);
1391 * This is a bit of a kludge. We only want this module loaded
1392 * for ASUS systems, but there's currently no way to probe the
1393 * ACPI namespace for ASUS HIDs. So we just return failure if
1394 * we didn't find one, which will cause the module to be
1397 if (!asus_hotk_found
) {
1398 acpi_bus_unregister_driver(&asus_hotk_driver
);
1399 remove_proc_entry(PROC_ASUS
, acpi_root_dir
);
1403 asus_backlight_device
= backlight_device_register("asus",NULL
,NULL
,
1404 &asus_backlight_data
);
1405 if (IS_ERR(asus_backlight_device
)) {
1406 printk(KERN_ERR
"Could not register asus backlight device\n");
1407 asus_backlight_device
= NULL
;
1414 module_init(asus_acpi_init
);
1415 module_exit(asus_acpi_exit
);