2 * Acer Laptop ACPI Extras
4 * Copyright (C) 2005-2007 E.M. Smith
5 * Copyright (C) 2007 Carlos Corbacho <cathectic@gmail.com>
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 devolpment page for this driver is located at
23 * http://code.google.com/p/aceracpi
27 * John Belmonte - the Toshiba ACPI driver originally adapted for this module.
28 * Julien Lerouge & Karol Kozimor - ASUS Acpi driver authors.
29 * Olaf Tauber - developer of acerhk, the inspiration to solve the 64-bit
30 * driver problem for my Aspire 5024.
31 * Mathieu Segaud - solved the ACPI problem that needed a double-modprobe
32 * in version 0.2 and below.
33 * Jim Ramsay - Figured out and added support for WMID interface
36 #define ACER_ACPI_VERSION "0.10.0"
39 * Comment the following line out to remove /proc support
44 #define PROC_ACER "acer"
45 #include <linux/proc_fs.h>
48 #include <linux/kernel.h>
49 #include <linux/module.h>
50 #include <linux/init.h>
51 #include <linux/types.h>
52 #include <linux/version.h>
54 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
55 #include <asm/uaccess.h>
57 #include <linux/uaccess.h>
61 #include <linux/dmi.h>
62 #include <linux/backlight.h>
63 #include <linux/leds.h>
64 #include <linux/platform_device.h>
66 #include <acpi/acpi_drivers.h>
70 /* Workaround needed for older kernels */
75 MODULE_AUTHOR("Mark Smith, Carlos Corbacho");
76 MODULE_DESCRIPTION("Acer Laptop ACPI Extras Driver");
77 MODULE_LICENSE("GPL");
79 #define ACER_LOGPREFIX "acer_acpi: "
80 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
81 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
82 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
84 #define DEBUG(level, message...) { \
86 printk(KERN_DEBUG ACER_LOGPREFIX message);\
90 * The maximum temperature one can set for fan control override.
91 * Doesn't propably make much sense if over 80 degrees celsius though...
93 #define ACER_MAX_TEMPERATURE_OVERRIDE 150
96 * The following defines quirks to get some specific functions to work
97 * which are known to not be supported over ACPI (such as the mail LED
98 * on WMID based Acer's)
107 * Keyboard controller ports
109 #define ACER_KBD_STATUS_REG 0x64 /* Status register (R) */
110 #define ACER_KBD_CNTL_REG 0x64 /* Controller command register (W) */
111 #define ACER_KBD_DATA_REG 0x60 /* Keyboard data register (R/W) */
115 * Meaning is unknown - this number is required for writing to ACPI for AMW0
116 * (it's also used in acerhk when directly accessing the EC)
118 #define ACER_AMW0_WRITE 0x9610
121 * Bit masks for the old AMW0 interface
123 #define ACER_AMW0_WIRELESS_MASK 0x35
124 #define ACER_AMW0_BLUETOOTH_MASK 0x34
125 #define ACER_AMW0_MAILLED_MASK 0x31
128 * Method IDs for new WMID interface
130 #define ACER_WMID_GET_WIRELESS_METHODID 1
131 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
132 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
133 #define ACER_WMID_SET_WIRELESS_METHODID 4
134 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
135 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
136 #define ACER_WMID_GET_THREEG_METHODID 10
137 #define ACER_WMID_SET_THREEG_METHODID 11
140 * Acer ACPI method GUIDs
142 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
143 #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
146 * Interface capability flags
154 ACER_CAP_TOUCHPAD_READ
,
155 ACER_CAP_TEMPERATURE_OVERRIDE
,
160 * Interface type flags
162 enum interface_flags
{
168 * Presumed start states -
169 * On some AMW0 laptops, we do not yet know how to get the device status from
170 * the EC, so we must store this ourselves.
172 * Plus, we can't tell which features are enabled or disabled on a specific
173 * model - e.g. The 5020 series can _support_ bluetooth; but the 5021 has no
174 * bluetooth, whilst the 5024 does. However, the BIOS identifies both laptops
175 * as 5020, and you can add bluetooth later.
177 * Basically the code works like this:
178 * - On init, any values specified on the commandline are set.
179 * - For interfaces where the current values cannot be detected and which
180 * have not been set on the commandline, we set them to some sane default
183 * See AMW0_init and acer_commandline_init
186 #define ACER_DEFAULT_WIRELESS 0
187 #define ACER_DEFAULT_BLUETOOTH 0
188 #define ACER_DEFAULT_MAILLED 0
189 #define ACER_DEFAULT_THREEG 0
191 static int max_brightness
= 0xF;
193 static int wireless
= -1;
194 static int bluetooth
= -1;
195 static int mailled
= -1;
196 static int brightness
= -1;
197 static int threeg
= -1;
198 static int fan_temperature_override
= -1;
199 static int debug
= 0;
200 static int force_series
;
202 module_param(mailled
, int, 0444);
203 module_param(wireless
, int, 0444);
204 module_param(bluetooth
, int, 0444);
205 module_param(brightness
, int, 0444);
206 module_param(threeg
, int, 0444);
207 module_param(force_series
, int, 0444);
208 module_param(fan_temperature_override
, int, 0444);
209 module_param(debug
, int, 0664);
210 MODULE_PARM_DESC(wireless
, "Set initial state of Wireless hardware");
211 MODULE_PARM_DESC(bluetooth
, "Set initial state of Bluetooth hardware");
212 MODULE_PARM_DESC(mailled
, "Set initial state of Mail LED");
213 MODULE_PARM_DESC(brightness
, "Set initial LCD backlight brightness");
214 MODULE_PARM_DESC(threeg
, "Set initial state of 3G hardware");
215 MODULE_PARM_DESC(fan_temperature_override
, "Set initial state of the 'FAN temperature-override'");
216 MODULE_PARM_DESC(debug
, "Debugging verbosity level (0=least 2=most)");
217 MODULE_PARM_DESC(force_series
, "Force a different laptop series for extra features (5020, 5720 or 2490)");
222 char *(*read_func
) (char *, u32
);
223 unsigned long (*write_func
) (const char *, unsigned long, u32
);
224 unsigned int capability
;
227 static struct proc_dir_entry
*acer_proc_dir
;
231 * Wait for the keyboard controller to become ready
233 static int wait_kbd_write(void)
236 while ((inb(ACER_KBD_STATUS_REG
) & 0x02) && (i
< 10000)) {
240 return -(i
== 10000);
243 static void send_kbd_cmd(u8 cmd
, u8 val
)
246 if (!wait_kbd_write())
247 outb(cmd
, ACER_KBD_CNTL_REG
);
248 if (!wait_kbd_write())
249 outb(val
, ACER_KBD_DATA_REG
);
250 preempt_enable_no_resched();
253 static void set_keyboard_quirk(void)
255 send_kbd_cmd(0x59, 0x90);
258 /* Each low-level interface must define at least some of the following */
261 * The ACPI device type
266 * The capabilities this interface provides
267 * In the future, these can be removed/added at runtime when we have a
268 * way of detecting what capabilities are /actually/ present on an
274 * Initializes an interface, should allocate the interface-specific
277 void (*init
) (struct Interface
*);
280 * Interface-specific private data member. Must *not* be touched by
281 * anyone outside of this struct
286 /* The static interface pointer, points to the currently detected interface */
287 static struct Interface
*interface
;
298 * Embedded Controller quirks
299 * Some laptops require us to directly access the EC to either enable or query
300 * features that are not available through ACPI.
308 u8 temperature_override
;
314 static struct quirk_entry
*quirks
;
316 static void set_quirks(void)
318 if (quirks
->mailled
!= 0) {
319 interface
->capability
|= ACER_CAP_MAILLED
;
320 DEBUG(1, "Using EC direct-access quirk for mail LED\n");
323 if (quirks
->touchpad
!= 0) {
324 interface
->capability
|= ACER_CAP_TOUCHPAD_READ
;
325 DEBUG(1, "Using EC direct-access quirk for reading touchpad status\n");
328 if (quirks
->temperature_override
!= 0) {
329 interface
->capability
|= ACER_CAP_TEMPERATURE_OVERRIDE
;
330 DEBUG(1, "Using EC direct-access quirk for temperature override setting (fan)\n");
333 if (quirks
->brightness
!= 0) {
334 interface
->capability
|= ACER_CAP_BRIGHTNESS
;
335 DEBUG(1, "Using EC direct-access quirk for backlight brightness\n");
338 if (quirks
->mmkeys
!= 0) {
339 set_keyboard_quirk();
340 printk(ACER_INFO
"Setting keyboard quirk to enable multimedia keys\n");
343 if (quirks
->bluetooth
!= 0) {
344 interface
->capability
|= ACER_CAP_BLUETOOTH
;
345 DEBUG(1, "Using EC direct-access quirk for bluetooth\n");
348 if (quirks
->wireless
!= 0) {
349 interface
->capability
|= ACER_CAP_WIRELESS
;
350 DEBUG(1, "Using EC direct-access quirk for wireless\n");
353 if (quirks
->max_brightness
!= 0) {
354 max_brightness
= quirks
->max_brightness
;
355 DEBUG(1, "Changing maximum brightness level\n");
359 static int dmi_matched(struct dmi_system_id
*dmi
)
361 quirks
= dmi
->driver_data
;
365 static struct quirk_entry quirk_unknown
= {
368 static struct quirk_entry quirk_acer_aspire_5020
= {
375 static struct quirk_entry quirk_acer_aspire_5680
= {
379 static struct quirk_entry quirk_acer_aspire_9300
= {
383 static struct quirk_entry quirk_acer_travelmate_2490
= {
386 .temperature_override
= 1,
391 * This is similar to the Aspire 5020, but with a different wireless quirk
393 static struct quirk_entry quirk_acer_travelmate_5620
= {
400 static struct quirk_entry quirk_acer_travelmate_5720
= {
401 .max_brightness
= 0x9,
408 static struct dmi_system_id acer_quirks
[] = {
410 .callback
= dmi_matched
,
411 .ident
= "Acer Aspire 3020",
413 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
414 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 3020"),
416 .driver_data
= &quirk_acer_aspire_5020
,
419 .callback
= dmi_matched
,
420 .ident
= "Acer Aspire 3040",
422 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
423 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 3040"),
425 .driver_data
= &quirk_acer_aspire_5020
,
428 .callback
= dmi_matched
,
429 .ident
= "Acer Aspire 5020",
431 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
432 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 5020"),
434 .driver_data
= &quirk_acer_aspire_5020
,
437 .callback
= dmi_matched
,
438 .ident
= "Acer Aspire 5040",
440 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
441 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 5040"),
443 .driver_data
= &quirk_acer_aspire_5020
,
446 .callback
= dmi_matched
,
447 .ident
= "Acer Aspire 5560",
449 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
450 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 5560"),
452 .driver_data
= &quirk_acer_travelmate_5620
,
455 .callback
= dmi_matched
,
456 .ident
= "Acer Aspire 5650",
458 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
459 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 5650"),
461 .driver_data
= &quirk_acer_travelmate_2490
,
464 .callback
= dmi_matched
,
465 .ident
= "Acer Aspire 5680",
467 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
468 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 5680"),
470 .driver_data
= &quirk_acer_aspire_5680
,
473 .callback
= dmi_matched
,
474 .ident
= "Acer Aspire 9300",
476 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
477 DMI_MATCH(DMI_PRODUCT_NAME
, "Aspire 9300"),
479 .driver_data
= &quirk_acer_aspire_9300
,
482 .callback
= dmi_matched
,
483 .ident
= "Acer TravelMate 2420",
485 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
486 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 2420"),
488 .driver_data
= &quirk_acer_aspire_5020
,
491 .callback
= dmi_matched
,
492 .ident
= "Acer TravelMate 2490",
494 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
495 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 2490"),
497 .driver_data
= &quirk_acer_travelmate_2490
,
500 .callback
= dmi_matched
,
501 .ident
= "Acer TravelMate 5620",
503 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
504 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 5620"),
506 .driver_data
= &quirk_acer_travelmate_5620
,
509 .callback
= dmi_matched
,
510 .ident
= "Acer TravelMate 5720",
512 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
513 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 5720"),
515 .driver_data
= &quirk_acer_travelmate_5720
,
520 /* Find which quirks are needed for a particular vendor/ model pair */
521 static void find_quirks(void)
523 DEBUG (1, "Looking for quirks\n");
525 dmi_check_system(acer_quirks
);
526 } else if (force_series
== 5020) {
527 DEBUG(0, "Forcing Acer Aspire 5020\n");
528 quirks
= &quirk_acer_aspire_5020
;
529 } else if (force_series
== 2490) {
530 DEBUG(0, "Forcing Acer TravelMate 2490\n");
531 quirks
= &quirk_acer_travelmate_2490
;
532 } else if (force_series
== 5620) {
533 DEBUG(0, "Forcing Acer TravelMate 5620\n");
534 quirks
= &quirk_acer_travelmate_5620
;
535 } else if (force_series
== 5720) {
536 DEBUG(0, "Forcing Acer TravelMate 5720\n");
537 quirks
= &quirk_acer_travelmate_5720
;
540 if (quirks
== NULL
) {
541 DEBUG(1, "No quirks known for this laptop\n");
542 quirks
= &quirk_unknown
;
548 * General interface convenience methods
551 static bool has_cap(u32 cap
)
553 if ((interface
->capability
& cap
) != 0) {
560 * Old interface (now known as the AMW0 interface)
569 static acpi_status
WMAB_execute(struct WMAB_args
*regbuf
, struct acpi_buffer
*result
)
571 struct acpi_buffer input
;
573 input
.length
= sizeof(struct WMAB_args
);
574 input
.pointer
= (u8
*)regbuf
;
576 status
= wmi_acer_evaluate_method(AMW0_GUID1
, 1, 1, &input
, result
);
577 DEBUG(2, " Args: 0x%08x 0x%08x 0x%08x 0x%08x\n", regbuf
->eax
, regbuf
->ebx
, regbuf
->ecx
, regbuf
->edx
);
582 static void AMW0_init(struct Interface
*iface
) {
584 struct acer_data
*data
;
586 /* Allocate our private data structure */
587 iface
->data
= kmalloc(sizeof(struct acer_data
), GFP_KERNEL
);
588 data
= (struct acer_data
*) iface
->data
;
591 * If the commandline doesn't specify these, we need to force them to
594 if (mailled
== -1 && !quirks
->mailled
)
595 mailled
= ACER_DEFAULT_MAILLED
;
596 if (wireless
== -1 && !quirks
->wireless
)
597 wireless
= ACER_DEFAULT_WIRELESS
;
598 if (bluetooth
== -1 && !quirks
->bluetooth
)
599 bluetooth
= ACER_DEFAULT_BLUETOOTH
;
602 * Set the cached "current" values to impossible ones so that
603 * acer_commandline_init will definitely set them.
605 if (quirks
->bluetooth
== 0) {
607 data
->bluetooth
= -1;
608 printk(ACER_INFO
"No EC data for reading bluetooth - bluetooth value when read will be a 'best guess'\n");
611 if (quirks
->wireless
== 0) {
613 printk(ACER_INFO
"No EC data for reading wireless - wireless value when read will be a 'best guess'\n");
616 if (quirks
->mailled
== 0) {
618 printk(ACER_INFO
"No EC data for reading mail LED - mail LED value when read will be a 'best guess'\n");
623 printk(ACER_INFO
"We need more data from your laptop's Embedded Controller (EC) to better support it\n");
624 printk(ACER_INFO
"Please see http://code.google.com/p/aceracpi/wiki/EmbeddedController on how to help\n");
628 static acpi_status
AMW0_get_bool(bool *value
, u32 cap
, struct Interface
*iface
)
630 struct acer_data
*data
= iface
->data
;
633 DEBUG(2, " AMW0_get_bool: cap=%d\n", cap
);
635 * On some models, we can read these values from the EC. On others,
636 * we use a stored value
639 case ACER_CAP_MAILLED
:
640 switch (quirks
->mailled
) {
642 ec_read(0x0A, &result
);
643 *value
= (result
>> 7) & 0x01;
646 *value
= data
->mailled
;
649 case ACER_CAP_WIRELESS
:
650 switch (quirks
->wireless
) {
652 ec_read(0x0A, &result
);
653 *value
= (result
>> 2) & 0x01;
656 ec_read(0x71, &result
);
657 *value
= result
& 0x01;
660 *value
= data
->wireless
;
663 case ACER_CAP_BLUETOOTH
:
664 switch (quirks
->bluetooth
) {
666 ec_read(0x0A, &result
);
667 *value
= (result
>> 4) & 0x01;
670 ec_read(0x71, &result
);
671 *value
= (result
>> 1) & 0x01;
674 *value
= data
->bluetooth
;
677 case ACER_CAP_TOUCHPAD_READ
:
678 switch (quirks
->touchpad
) {
680 ec_read(0x74, &result
);
681 *value
= (result
>> 3) & 0x01;
687 return AE_BAD_ADDRESS
;
692 static acpi_status
AMW0_set_bool(bool value
, u32 cap
, struct Interface
*iface
)
694 struct WMAB_args args
;
697 args
.eax
= ACER_AMW0_WRITE
;
698 args
.ebx
= value
? (1<<8) : 0;
701 case ACER_CAP_MAILLED
:
702 args
.ebx
|= ACER_AMW0_MAILLED_MASK
;
704 case ACER_CAP_WIRELESS
:
705 args
.ebx
|= ACER_AMW0_WIRELESS_MASK
;
707 case ACER_CAP_BLUETOOTH
:
708 args
.ebx
|= ACER_AMW0_BLUETOOTH_MASK
;
711 return AE_BAD_ADDRESS
;
714 /* Actually do the set */
715 status
= WMAB_execute(&args
, NULL
);
718 * Currently no way to query the state, so cache the new value on
721 if (ACPI_SUCCESS(status
)) {
722 struct acer_data
*data
= iface
->data
;
724 case ACER_CAP_MAILLED
:
725 data
->mailled
= value
;
727 case ACER_CAP_WIRELESS
:
728 data
->wireless
= value
;
730 case ACER_CAP_BLUETOOTH
:
731 data
->bluetooth
= value
;
739 static acpi_status
AMW0_get_u8(u8
*value
, u32 cap
, struct Interface
*iface
) {
741 case ACER_CAP_BRIGHTNESS
:
742 switch (quirks
->brightness
) {
744 return ec_read(0x83, value
);
746 return ec_read(0x85, value
);
748 return AE_BAD_ADDRESS
;
752 return AE_BAD_ADDRESS
;
757 static acpi_status
AMW0_set_u8(u8 value
, u32 cap
, struct Interface
*iface
) {
759 case ACER_CAP_BRIGHTNESS
:
760 switch (quirks
->brightness
) {
762 return ec_write(0x83, value
);
764 return ec_write(0x85, value
);
766 return AE_BAD_ADDRESS
;
770 return AE_BAD_ADDRESS
;
775 static struct Interface AMW0_interface
= {
786 * New interface (The WMID interface)
789 static void WMID_init(struct Interface
*iface
)
791 struct acer_data
*data
;
793 /* Allocate our private data structure */
794 iface
->data
= kmalloc(sizeof(struct acer_data
), GFP_KERNEL
);
795 data
= (struct acer_data
*) iface
->data
;
799 WMI_execute_u32(u32 method_id
, u32 in
, u32
*out
)
801 struct acpi_buffer input
= { (acpi_size
) sizeof(u32
), (void *)(&in
) };
802 struct acpi_buffer result
= { ACPI_ALLOCATE_BUFFER
, NULL
};
803 union acpi_object
*obj
;
807 DEBUG(2, " WMI_execute_u32:\n");
808 status
= wmi_acer_evaluate_method(WMID_GUID1
, 1, method_id
, &input
, &result
);
809 DEBUG(2, " In: 0x%08x\n", in
);
811 if (ACPI_FAILURE(status
))
814 obj
= (union acpi_object
*) result
.pointer
;
815 if (obj
&& obj
->type
== ACPI_TYPE_BUFFER
&& obj
->buffer
.length
== sizeof(u32
)) {
816 tmp
= *((u32
*) obj
->buffer
.pointer
);
817 DEBUG(2, " Out: 0x%08x\n", tmp
);
821 DEBUG(2, " Got unexpected result of type %d\n", obj
->type
);
823 DEBUG(2, " Got unexpected null result\n");
830 if (result
.length
> 0 && result
.pointer
)
831 kfree(result
.pointer
);
833 DEBUG(2, " Returning from WMI_execute_u32:\n");
837 static acpi_status
WMID_get_u8(u8
*value
, u32 cap
, struct Interface
*iface
) {
842 DEBUG(2, " WMID_get_u8: cap=%d\n", cap
);
844 case ACER_CAP_WIRELESS
:
845 method_id
= ACER_WMID_GET_WIRELESS_METHODID
;
847 case ACER_CAP_BLUETOOTH
:
848 method_id
= ACER_WMID_GET_BLUETOOTH_METHODID
;
850 case ACER_CAP_BRIGHTNESS
:
851 method_id
= ACER_WMID_GET_BRIGHTNESS_METHODID
;
853 case ACER_CAP_THREEG
:
854 method_id
= ACER_WMID_GET_THREEG_METHODID
;
856 case ACER_CAP_MAILLED
:
857 if (quirks
->mailled
== 1) {
858 ec_read(0x9f, value
);
862 case ACER_CAP_TOUCHPAD_READ
:
863 switch (quirks
->touchpad
) {
865 ec_read(0x9e, value
);
866 *value
= 1 - ((*value
>> 3) & 0x01);
871 case ACER_CAP_TEMPERATURE_OVERRIDE
:
872 if (quirks
->temperature_override
== 1) {
873 ec_read(0xa9, value
);
877 return AE_BAD_ADDRESS
;
879 status
= WMI_execute_u32(method_id
, 0, &result
);
880 DEBUG(2, " WMI_execute_u32 status=%d:\n", status
);
882 if (ACPI_SUCCESS(status
))
885 DEBUG(2, " Returning from WMID_get_u8:\n");
889 static acpi_status
WMID_set_u8(u8 value
, u32 cap
, struct Interface
*iface
) {
893 case ACER_CAP_BRIGHTNESS
:
894 method_id
= ACER_WMID_SET_BRIGHTNESS_METHODID
;
896 case ACER_CAP_WIRELESS
:
897 method_id
= ACER_WMID_SET_WIRELESS_METHODID
;
899 case ACER_CAP_BLUETOOTH
:
900 method_id
= ACER_WMID_SET_BLUETOOTH_METHODID
;
902 case ACER_CAP_THREEG
:
903 method_id
= ACER_WMID_SET_THREEG_METHODID
;
905 case ACER_CAP_MAILLED
:
906 if (quirks
->mailled
== 1) {
907 send_kbd_cmd(0x59, value
? 0x92 : 0x93);
910 case ACER_CAP_TEMPERATURE_OVERRIDE
:
911 if (quirks
->temperature_override
== 1) {
912 ec_write(0xa9, value
);
916 return AE_BAD_ADDRESS
;
918 return WMI_execute_u32(method_id
, (u32
)value
, NULL
);
922 static struct Interface WMID_interface
= {
926 | ACER_CAP_BRIGHTNESS
936 * High-level Procfs file handlers
940 dispatch_read(char *page
, char **start
, off_t off
, int count
, int *eof
,
941 struct ProcItem
*item
)
946 DEBUG(2, " dispatch_read: \n");
948 p
= item
->read_func(p
, item
->capability
);
950 if (len
<= off
+ count
)
962 dispatch_write(struct file
*file
, const char __user
*buffer
,
963 unsigned long count
, struct ProcItem
*item
)
969 * Arg buffer points to userspace memory, which can't be accessed
970 * directly. Since we're making a copy, zero-terminate the
971 * destination so that sscanf can be used on it safely.
973 tmp_buffer
= kmalloc(count
+ 1, GFP_KERNEL
);
974 if (copy_from_user(tmp_buffer
, buffer
, count
)) {
977 tmp_buffer
[count
] = 0;
978 result
= item
->write_func(tmp_buffer
, count
, item
->capability
);
986 * Generic Device (interface-independent)
989 static acpi_status
get_bool(bool *value
, u32 cap
) {
990 acpi_status status
= AE_BAD_ADDRESS
;
993 DEBUG(2, " get_bool: cap=%d, interface type=%d\n",
994 cap
, interface
->type
);
995 switch (interface
->type
) {
997 status
= AMW0_get_bool(value
, cap
, interface
);
1000 status
= WMID_get_u8(&tmp
, cap
, interface
);
1001 *value
= (tmp
== 1) ? 1 : 0;
1004 DEBUG(2, " Returning from get_bool:\n");
1008 static acpi_status
set_bool(int value
, u32 cap
) {
1009 acpi_status status
= AE_BAD_PARAMETER
;
1011 DEBUG(2, " set_bool: cap=%d, interface type=%d, value=%d\n",
1012 cap
, interface
->type
, value
);
1013 if ((value
== 0 || value
== 1) && (interface
->capability
& cap
)) {
1014 switch (interface
->type
) {
1016 status
= AMW0_set_bool(value
== 1, cap
, interface
);
1019 status
= WMID_set_u8(value
== 1, cap
, interface
);
1026 static acpi_status
get_u8(u8
*value
, u32 cap
) {
1027 DEBUG(2, " get_u8: cap=%d\n", cap
);
1028 switch (interface
->type
) {
1030 return AMW0_get_u8(value
, cap
, interface
);
1033 return WMID_get_u8(value
, cap
, interface
);
1036 return AE_BAD_ADDRESS
;
1040 static acpi_status
set_u8(u8 value
, u8 min
, u8 max
, u32 cap
) {
1042 DEBUG(2, " set_u8: cap=%d, interface type=%d, value=%d\n",
1043 cap
, interface
->type
, value
);
1045 if ((value
>= min
&& value
<= max
) && (interface
->capability
& cap
) ) {
1046 switch (interface
->type
) {
1048 return AMW0_set_u8(value
, cap
, interface
);
1050 return WMID_set_u8(value
, cap
, interface
);
1052 return AE_BAD_PARAMETER
;
1055 return AE_BAD_PARAMETER
;
1058 /* Each _u8 needs a small wrapper that sets the boundary values */
1059 static acpi_status
set_brightness(u8 value
)
1061 return set_u8(value
, 0, max_brightness
, ACER_CAP_BRIGHTNESS
);
1064 static acpi_status
set_temperature_override(u8 value
)
1066 return set_u8(value
, 0, ACER_MAX_TEMPERATURE_OVERRIDE
, ACER_CAP_TEMPERATURE_OVERRIDE
);
1069 static void __init
acer_commandline_init(void)
1071 DEBUG(1, "Commandline args: mailled(%d) wireless(%d) bluetooth(%d) brightness(%d)\n",
1072 mailled
, wireless
, bluetooth
, brightness
);
1075 * These will all fail silently if the value given is invalid, or the
1076 * capability isn't available on the given interface
1078 set_bool(mailled
, ACER_CAP_MAILLED
);
1079 set_bool(wireless
, ACER_CAP_WIRELESS
);
1080 set_bool(bluetooth
, ACER_CAP_BLUETOOTH
);
1081 set_bool(threeg
, ACER_CAP_THREEG
);
1082 set_temperature_override(fan_temperature_override
);
1083 set_brightness((u8
)brightness
);
1088 * Procfs interface (deprecated)
1090 static char *read_bool(char *p
, u32 cap
)
1095 DEBUG(2, " read_bool: cap=%d\n", cap
);
1096 status
= get_bool(&result
, cap
);
1097 if (ACPI_SUCCESS(status
))
1098 p
+= sprintf(p
, "%d\n", result
);
1100 p
+= sprintf(p
, "Read error" );
1104 static unsigned long write_bool(const char *buffer
, unsigned long count
, u32 cap
)
1108 DEBUG(2, " write_bool: cap=%d, interface type=%d\n buffer=%s\n",
1109 cap
, interface
->type
, buffer
);
1111 if (sscanf(buffer
, "%i", &value
) == 1) {
1112 acpi_status status
= set_bool(value
, cap
);
1113 if (ACPI_FAILURE(status
))
1121 static char *read_u8(char *p
, u32 cap
)
1126 DEBUG(2, " read_u8: cap=%d\n", cap
);
1127 status
= get_u8(&result
, cap
);
1128 if (ACPI_SUCCESS(status
))
1129 p
+= sprintf(p
, "%u\n", result
);
1131 p
+= sprintf(p
, "Read error" );
1135 static unsigned long write_u8(const char *buffer
, unsigned long count
, u32 cap
)
1138 acpi_status (*set_method
)(u8
);
1140 /* Choose the appropriate set_u8 wrapper here, based on the capability */
1142 case ACER_CAP_BRIGHTNESS
:
1143 set_method
= set_brightness
;
1145 case ACER_CAP_TEMPERATURE_OVERRIDE
:
1146 set_method
= set_temperature_override
;
1152 if (sscanf(buffer
, "%i", &value
) == 1) {
1153 acpi_status status
= (*set_method
)(value
);
1154 if (ACPI_FAILURE(status
))
1162 static char *read_version(char *p
, u32 cap
)
1164 p
+= sprintf(p
, "%s\n", ACER_ACPI_VERSION
);
1168 static char *read_interface(char *p
, u32 cap
)
1170 p
+= sprintf(p
, "%s\n", (interface
->type
== ACER_AMW0
) ? "AMW0": "WMID");
1174 struct ProcItem proc_items
[] = {
1175 {"mailled", read_bool
, write_bool
, ACER_CAP_MAILLED
},
1176 {"bluetooth", read_bool
, write_bool
, ACER_CAP_BLUETOOTH
},
1177 {"wireless", read_bool
, write_bool
, ACER_CAP_WIRELESS
},
1178 {"brightness", read_u8
, write_u8
, ACER_CAP_BRIGHTNESS
},
1179 {"threeg", read_bool
, write_bool
, ACER_CAP_THREEG
},
1180 {"touchpad", read_bool
, NULL
, ACER_CAP_TOUCHPAD_READ
},
1181 {"fan_temperature_override", read_u8
, write_u8
, ACER_CAP_TEMPERATURE_OVERRIDE
},
1182 {"version", read_version
, NULL
, ACER_CAP_ANY
},
1183 {"interface", read_interface
, NULL
, ACER_CAP_ANY
},
1187 static int __init
add_proc_entries(void)
1189 struct proc_dir_entry
*proc
;
1190 struct ProcItem
*item
;
1192 for (item
= proc_items
; item
->name
; ++item
) {
1194 * Only add the proc file if the current interface actually
1197 if (interface
->capability
& item
->capability
) {
1198 proc
= create_proc_read_entry(item
->name
,
1199 S_IFREG
| S_IRUGO
| S_IWUSR
,
1201 (read_proc_t
*) dispatch_read
,
1204 proc
->owner
= THIS_MODULE
;
1205 if (proc
&& item
->write_func
)
1206 proc
->write_proc
= (write_proc_t
*) dispatch_write
;
1213 static int __exit
remove_proc_entries(void)
1215 struct ProcItem
*item
;
1217 for (item
= proc_items
; item
->name
; ++item
)
1218 remove_proc_entry(item
->name
, acer_proc_dir
);
1224 * LED device (Mail LED only, no other LEDs known yet)
1226 static void mail_led_set(struct led_classdev
*led_cdev
, enum led_brightness value
)
1229 set_bool(tmp
, ACER_CAP_MAILLED
);
1232 static struct led_classdev mail_led
= {
1233 .name
= "acer_acpi:mail",
1234 .brightness_set
= mail_led_set
,
1237 static void acer_led_init(struct device
*dev
)
1239 led_classdev_register(dev
, &mail_led
);
1242 static void acer_led_exit(void)
1244 led_classdev_unregister(&mail_led
);
1247 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)
1251 static struct backlight_device
*acer_backlight_device
;
1253 static int read_brightness(struct backlight_device
*bd
)
1256 get_u8(&value
, ACER_CAP_BRIGHTNESS
);
1260 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,20)
1261 static int update_bl_status(struct backlight_device
*bd
)
1263 set_brightness(bd
->props
->brightness
);
1267 static struct backlight_properties acer_backlight_properties
= {
1268 .get_brightness
= read_brightness
,
1269 .update_status
= update_bl_status
,
1272 static int __init
acer_backlight_init(struct device
*dev
)
1274 struct backlight_device
*bd
;
1276 DEBUG(1, "Loading backlight driver\n");
1277 bd
= backlight_device_register("acer_acpi", dev
, NULL
, &acer_backlight_properties
);
1279 printk(ACER_ERR
"Could not register Acer backlight device\n");
1280 acer_backlight_device
= NULL
;
1284 acer_backlight_device
= bd
;
1286 bd
->props
->max_brightness
= max_brightness
;
1290 static int update_bl_status(struct backlight_device
*bd
)
1292 set_brightness(bd
->props
.brightness
);
1296 static struct backlight_ops acer_backlight_ops
= {
1297 .get_brightness
= read_brightness
,
1298 .update_status
= update_bl_status
,
1301 static int __init
acer_backlight_init(struct device
*dev
)
1303 struct backlight_device
*bd
;
1305 DEBUG(1, "Loading backlight driver\n");
1306 bd
= backlight_device_register("acer_acpi", dev
, NULL
, &acer_backlight_ops
);
1308 printk(ACER_ERR
"Could not register Acer backlight device\n");
1309 acer_backlight_device
= NULL
;
1313 acer_backlight_device
= bd
;
1315 bd
->props
.max_brightness
= max_brightness
;
1316 bd
->props
.brightness
= read_brightness(NULL
);
1317 backlight_update_status(bd
);
1322 static void __exit
acer_backlight_exit(void)
1324 backlight_device_unregister(acer_backlight_device
);
1329 * Read/ write bool sysfs macro
1331 #define show_set_bool(value, cap) \
1333 show_bool_##value(struct device *dev, struct device_attribute *attr, \
1337 acpi_status status = get_bool(&result, cap); \
1338 if (ACPI_SUCCESS(status)) \
1339 return sprintf(buf, "%d\n", result); \
1340 return sprintf(buf, "Read error" ); \
1344 set_bool_##value(struct device *dev, struct device_attribute *attr, \
1345 const char *buf, size_t count) \
1347 bool tmp = simple_strtoul(buf, NULL, 10); \
1348 acpi_status status = set_bool(tmp, cap); \
1349 if (ACPI_FAILURE(status)) \
1353 static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
1354 show_bool_##value, set_bool_##value);
1356 show_set_bool(wireless
, ACER_CAP_WIRELESS
);
1357 show_set_bool(bluetooth
, ACER_CAP_BLUETOOTH
);
1358 show_set_bool(threeg
, ACER_CAP_THREEG
);
1359 show_set_bool(fan_temperature_override
, ACER_CAP_TEMPERATURE_OVERRIDE
);
1362 * Read-only bool sysfs macro
1364 #define show_bool(value, cap) \
1366 show_bool_##value(struct device *dev, struct device_attribute *attr, \
1370 acpi_status status = get_bool(&result, cap); \
1371 if (ACPI_SUCCESS(status)) \
1372 return sprintf(buf, "%d\n", result); \
1373 return sprintf(buf, "Read error" ); \
1375 static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
1376 show_bool_##value, NULL);
1378 show_bool(touchpad
, ACER_CAP_TOUCHPAD_READ
);
1381 * Read interface sysfs macro
1383 static ssize_t
show_interface(struct device
*dev
, struct device_attribute
*attr
,
1386 return sprintf(buf
, "%s\n", (interface
->type
== ACER_AMW0
) ? "AMW0" : "WMID");
1389 static DEVICE_ATTR(interface
, S_IWUGO
| S_IRUGO
| S_IWUSR
, show_interface
, NULL
);
1394 static int __devinit
acer_platform_probe(struct platform_device
*device
)
1396 if (has_cap(ACER_CAP_MAILLED
))
1397 acer_led_init(&device
->dev
);
1398 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)
1399 if (has_cap(ACER_CAP_BRIGHTNESS
))
1400 acer_backlight_init(&device
->dev
);
1405 static int acer_platform_remove(struct platform_device
*device
)
1407 if (has_cap(ACER_CAP_MAILLED
))
1409 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)
1410 if (has_cap(ACER_CAP_BRIGHTNESS
))
1411 acer_backlight_exit();
1416 static int acer_platform_suspend(struct platform_device
*device
, pm_message_t state
)
1419 * WMID fix for suspend-to-disk - save all current states now so we can
1420 * restore them on resume
1424 struct acer_data
*data
= interface
->data
;
1426 #define save_bool_device(device, cap) \
1427 if (has_cap(cap)) {\
1428 get_bool(&value, cap);\
1429 data->device = value;\
1432 #define save_u8_device(device, cap) \
1433 if (has_cap(cap)) {\
1434 get_u8(&u8value, cap);\
1435 data->device = u8value;\
1438 if (interface
->type
== ACER_WMID
) {
1439 save_bool_device(wireless
, ACER_CAP_WIRELESS
);
1440 save_bool_device(bluetooth
, ACER_CAP_BLUETOOTH
);
1441 save_bool_device(threeg
, ACER_CAP_THREEG
);
1442 save_u8_device(brightness
, ACER_CAP_BRIGHTNESS
);
1448 static int acer_platform_resume(struct platform_device
*device
)
1450 struct acer_data
*data
= interface
->data
;
1452 #define restore_bool_device(device, cap) \
1454 set_bool(data->device, cap);\
1456 restore_bool_device(wireless, ACER_CAP_WIRELESS);
1457 restore_bool_device(bluetooth
, ACER_CAP_BLUETOOTH
);
1458 restore_bool_device(threeg
, ACER_CAP_THREEG
);
1459 restore_bool_device(mailled
, ACER_CAP_MAILLED
);
1461 if (has_cap(ACER_CAP_BRIGHTNESS
))
1462 set_brightness((u8
)data
->brightness
);
1464 /* Check if this laptop requires the keyboard quirk */
1465 if (quirks
->mmkeys
!= 0) {
1466 set_keyboard_quirk();
1467 printk(ACER_INFO
"Setting keyboard quirk to enable multimedia keys\n");
1473 static struct platform_driver acer_platform_driver
= {
1475 .name
= "acer_acpi",
1476 .owner
= THIS_MODULE
,
1478 .probe
= acer_platform_probe
,
1479 .remove
= acer_platform_remove
,
1480 .suspend
= acer_platform_suspend
,
1481 .resume
= acer_platform_resume
,
1484 static struct platform_device
*acer_platform_device
;
1486 static int remove_sysfs(struct platform_device
*device
)
1488 #define remove_device_file(value, cap) \
1490 device_remove_file(&device->dev, &dev_attr_##value);
1492 remove_device_file(wireless
, ACER_CAP_WIRELESS
);
1493 remove_device_file(bluetooth
, ACER_CAP_BLUETOOTH
);
1494 remove_device_file(threeg
, ACER_CAP_THREEG
);
1495 remove_device_file(interface
, ACER_CAP_ANY
);
1496 remove_device_file(fan_temperature_override
, ACER_CAP_TEMPERATURE_OVERRIDE
);
1497 remove_device_file(touchpad
, ACER_CAP_TOUCHPAD_READ
);
1501 static int create_sysfs(void)
1503 int retval
= -ENOMEM
;
1505 #define add_device_file(value, cap) \
1506 if (has_cap(cap)) {\
1507 retval = device_create_file(&acer_platform_device->dev, &dev_attr_##value);\
1512 add_device_file(wireless
, ACER_CAP_WIRELESS
);
1513 add_device_file(bluetooth
, ACER_CAP_BLUETOOTH
);
1514 add_device_file(threeg
, ACER_CAP_THREEG
);
1515 add_device_file(interface
, ACER_CAP_ANY
);
1516 add_device_file(fan_temperature_override
, ACER_CAP_TEMPERATURE_OVERRIDE
);
1517 add_device_file(touchpad
, ACER_CAP_TOUCHPAD_READ
);
1522 remove_sysfs(acer_platform_device
);
1526 static int __init
acer_acpi_init(void)
1528 printk(ACER_INFO
"Acer Laptop ACPI Extras version %s\n",
1532 * Detect which WMI interface we're using.
1534 if (wmi_acer_has_guid(WMID_GUID1
)) {
1535 DEBUG(0, "Detected Acer WMID interface\n");
1536 interface
= &WMID_interface
;
1537 } else if (wmi_acer_has_guid(AMW0_GUID1
)) {
1538 DEBUG(0, "Detected Acer AMW0 interface\n");
1539 interface
= &AMW0_interface
;
1541 printk(ACER_ERR
"No or unsupported WMI interface, unable to load.\n");
1544 interface
= &AMW0_interface
;
1546 /* Find if this laptop requires any quirks */
1547 DEBUG(1, "Finding quirks\n");
1550 /* Now that we have a known interface, initialize it */
1551 DEBUG(1, "Initialising interface\n");
1552 if (interface
->init
)
1553 interface
->init(interface
);
1556 /* Create the proc entries */
1557 acer_proc_dir
= proc_mkdir(PROC_ACER
, acpi_root_dir
);
1558 if (!acer_proc_dir
) {
1559 printk(ACER_ERR
"Unable to create /proc entries, aborting.\n");
1560 goto error_proc_mkdir
;
1563 acer_proc_dir
->owner
= THIS_MODULE
;
1564 if (add_proc_entries()) {
1565 printk(ACER_ERR
"Unable to create /proc entries, aborting.\n");
1566 goto error_proc_add
;
1571 * Register the driver
1573 if (platform_driver_register(&acer_platform_driver
)) {
1574 printk(ACER_ERR
"Unable to register platform driver, aborting.\n");
1575 goto error_platform_register
;
1577 acer_platform_device
= platform_device_alloc("acer_acpi", -1);
1578 platform_device_add(acer_platform_device
);
1582 DEBUG(1, "Driver registered\n");
1584 /* Override any initial settings with values from the commandline */
1585 acer_commandline_init();
1589 error_platform_register
:
1591 remove_proc_entries();
1594 remove_proc_entry(PROC_ACER
, acpi_root_dir
);
1596 if (interface
->data
!= NULL
)
1597 kfree(interface
->data
);
1602 static void __exit
acer_acpi_exit(void)
1604 remove_sysfs(acer_platform_device
);
1605 platform_device_del(acer_platform_device
);
1606 platform_driver_unregister(&acer_platform_driver
);
1609 remove_proc_entries();
1612 remove_proc_entry(PROC_ACER
, acpi_root_dir
);
1615 if (interface
->data
!= NULL
)
1616 kfree(interface
->data
);
1618 printk(ACER_INFO
"Acer Laptop ACPI Extras unloaded\n");
1622 module_init(acer_acpi_init
);
1623 module_exit(acer_acpi_exit
);