2 * Acer WMI Laptop Extras
4 * Copyright (C) 2007-2009 Carlos Corbacho <carlos@strangeworlds.co.uk>
7 * Copyright (C) 2005-2007 E.M. Smith
8 * Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
33 #include <linux/backlight.h>
34 #include <linux/leds.h>
35 #include <linux/platform_device.h>
36 #include <linux/acpi.h>
37 #include <linux/i8042.h>
38 #include <linux/rfkill.h>
39 #include <linux/workqueue.h>
40 #include <linux/debugfs.h>
41 #include <linux/slab.h>
42 #include <linux/input.h>
43 #include <linux/input/sparse-keymap.h>
45 #include <acpi/acpi_drivers.h>
47 MODULE_AUTHOR("Carlos Corbacho");
48 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
49 MODULE_LICENSE("GPL");
53 * Meaning is unknown - this number is required for writing to ACPI for AMW0
54 * (it's also used in acerhk when directly accessing the BIOS)
56 #define ACER_AMW0_WRITE 0x9610
59 * Bit masks for the AMW0 interface
61 #define ACER_AMW0_WIRELESS_MASK 0x35
62 #define ACER_AMW0_BLUETOOTH_MASK 0x34
63 #define ACER_AMW0_MAILLED_MASK 0x31
66 * Method IDs for WMID interface
68 #define ACER_WMID_GET_WIRELESS_METHODID 1
69 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
70 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
71 #define ACER_WMID_SET_WIRELESS_METHODID 4
72 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
73 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
74 #define ACER_WMID_GET_THREEG_METHODID 10
75 #define ACER_WMID_SET_THREEG_METHODID 11
78 * Acer ACPI method GUIDs
80 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
81 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
82 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
83 #define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A"
84 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
87 * Acer ACPI event GUIDs
89 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
91 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
92 MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
93 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
95 enum acer_wmi_event_ids {
96 WMID_HOTKEY_EVENT = 0x1,
99 static const struct key_entry acer_wmi_keymap[] = {
100 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
101 {KE_KEY, 0x03, {KEY_WLAN} }, /* WiFi */
102 {KE_KEY, 0x04, {KEY_WLAN} }, /* WiFi */
103 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
104 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
105 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
106 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
107 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
108 {KE_IGNORE, 0x41, {KEY_MUTE} },
109 {KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
110 {KE_IGNORE, 0x43, {KEY_NEXTSONG} },
111 {KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
112 {KE_IGNORE, 0x45, {KEY_STOP} },
113 {KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
114 {KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
115 {KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
116 {KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
117 {KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
118 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
119 {KE_IGNORE, 0x81, {KEY_SLEEP} },
120 {KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} }, /* Touch Pad On/Off */
121 {KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
125 static struct input_dev *acer_wmi_input_dev;
127 struct event_return_value {
132 } __attribute__((packed));
135 * GUID3 Get Device Status device flags
137 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
138 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
139 #define ACER_WMID3_GDS_WIMAX (1<<7) /* WiMAX */
140 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
142 struct lm_input_params {
143 u8 function_num; /* Function Number */
144 u16 commun_devices; /* Communication type devices default status */
145 u16 devices; /* Other type devices default status */
146 u8 lm_status; /* Launch Manager Status */
148 } __attribute__((packed));
150 struct lm_return_value {
151 u8 error_code; /* Error Code */
152 u8 ec_return_value; /* EC Return Value */
154 } __attribute__((packed));
156 struct wmid3_gds_input_param { /* Get Device Status input parameter */
157 u8 function_num; /* Function Number */
158 u8 hotkey_number; /* Hotkey Number */
159 u16 devices; /* Get Device */
160 } __attribute__((packed));
162 struct wmid3_gds_return_value { /* Get Device Status return value*/
163 u8 error_code; /* Error Code */
164 u8 ec_return_value; /* EC Return Value */
165 u16 devices; /* Current Device Status */
167 } __attribute__((packed));
169 struct hotkey_function_type_aa {
173 u16 commun_func_bitmap;
174 } __attribute__((packed));
177 * Interface capability flags
179 #define ACER_CAP_MAILLED (1<<0)
180 #define ACER_CAP_WIRELESS (1<<1)
181 #define ACER_CAP_BLUETOOTH (1<<2)
182 #define ACER_CAP_BRIGHTNESS (1<<3)
183 #define ACER_CAP_THREEG (1<<4)
184 #define ACER_CAP_ANY (0xFFFFFFFF)
187 * Interface type flags
189 enum interface_flags {
196 #define ACER_DEFAULT_WIRELESS 0
197 #define ACER_DEFAULT_BLUETOOTH 0
198 #define ACER_DEFAULT_MAILLED 0
199 #define ACER_DEFAULT_THREEG 0
201 static int max_brightness = 0xF;
203 static int mailled = -1;
204 static int brightness = -1;
205 static int threeg = -1;
206 static int force_series;
207 static bool ec_raw_mode;
208 static bool has_type_aa;
209 static u16 commun_func_bitmap;
211 module_param(mailled, int, 0444);
212 module_param(brightness, int, 0444);
213 module_param(threeg, int, 0444);
214 module_param(force_series, int, 0444);
215 module_param(ec_raw_mode, bool, 0444);
216 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
217 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
218 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
219 MODULE_PARM_DESC(force_series, "Force a different laptop series");
220 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
230 struct dentry *devices;
234 static struct rfkill *wireless_rfkill;
235 static struct rfkill *bluetooth_rfkill;
236 static struct rfkill *threeg_rfkill;
237 static bool rfkill_inited;
239 /* Each low-level interface must define at least some of the following */
240 struct wmi_interface {
241 /* The WMI device type */
244 /* The capabilities this interface provides */
247 /* Private data for the current interface */
248 struct acer_data data;
250 /* debugfs entries associated with this interface */
251 struct acer_debug debug;
254 /* The static interface pointer, points to the currently detected interface */
255 static struct wmi_interface *interface;
258 * Embedded Controller quirks
259 * Some laptops require us to directly access the EC to either enable or query
260 * features that are not available through WMI.
270 static struct quirk_entry *quirks;
272 static void set_quirks(void)
278 interface->capability |= ACER_CAP_MAILLED;
280 if (quirks->brightness)
281 interface->capability |= ACER_CAP_BRIGHTNESS;
284 static int dmi_matched(const struct dmi_system_id *dmi)
286 quirks = dmi->driver_data;
290 static struct quirk_entry quirk_unknown = {
293 static struct quirk_entry quirk_acer_aspire_1520 = {
297 static struct quirk_entry quirk_acer_travelmate_2490 = {
301 /* This AMW0 laptop has no bluetooth */
302 static struct quirk_entry quirk_medion_md_98300 = {
306 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
310 static struct quirk_entry quirk_lenovo_ideapad_s205 = {
314 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
315 static struct dmi_system_id __devinitdata acer_blacklist[] = {
317 .ident = "Acer Aspire One (SSD)",
319 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
320 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
324 .ident = "Acer Aspire One (HDD)",
326 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
327 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
333 static struct dmi_system_id acer_quirks[] = {
335 .callback = dmi_matched,
336 .ident = "Acer Aspire 1360",
338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
339 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
341 .driver_data = &quirk_acer_aspire_1520,
344 .callback = dmi_matched,
345 .ident = "Acer Aspire 1520",
347 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
348 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
350 .driver_data = &quirk_acer_aspire_1520,
353 .callback = dmi_matched,
354 .ident = "Acer Aspire 3100",
356 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
357 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
359 .driver_data = &quirk_acer_travelmate_2490,
362 .callback = dmi_matched,
363 .ident = "Acer Aspire 3610",
365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
368 .driver_data = &quirk_acer_travelmate_2490,
371 .callback = dmi_matched,
372 .ident = "Acer Aspire 5100",
374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
377 .driver_data = &quirk_acer_travelmate_2490,
380 .callback = dmi_matched,
381 .ident = "Acer Aspire 5610",
383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
386 .driver_data = &quirk_acer_travelmate_2490,
389 .callback = dmi_matched,
390 .ident = "Acer Aspire 5630",
392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
395 .driver_data = &quirk_acer_travelmate_2490,
398 .callback = dmi_matched,
399 .ident = "Acer Aspire 5650",
401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
404 .driver_data = &quirk_acer_travelmate_2490,
407 .callback = dmi_matched,
408 .ident = "Acer Aspire 5680",
410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
411 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
413 .driver_data = &quirk_acer_travelmate_2490,
416 .callback = dmi_matched,
417 .ident = "Acer Aspire 9110",
419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
420 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
422 .driver_data = &quirk_acer_travelmate_2490,
425 .callback = dmi_matched,
426 .ident = "Acer TravelMate 2490",
428 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
429 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
431 .driver_data = &quirk_acer_travelmate_2490,
434 .callback = dmi_matched,
435 .ident = "Acer TravelMate 4200",
437 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
438 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
440 .driver_data = &quirk_acer_travelmate_2490,
443 .callback = dmi_matched,
444 .ident = "Fujitsu Siemens Amilo Li 1718",
446 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
447 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
449 .driver_data = &quirk_fujitsu_amilo_li_1718,
452 .callback = dmi_matched,
453 .ident = "Medion MD 98300",
455 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
456 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
458 .driver_data = &quirk_medion_md_98300,
461 .callback = dmi_matched,
462 .ident = "Lenovo Ideapad S205",
464 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
465 DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
467 .driver_data = &quirk_lenovo_ideapad_s205,
470 .callback = dmi_matched,
471 .ident = "Lenovo 3000 N200",
473 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
474 DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
476 .driver_data = &quirk_fujitsu_amilo_li_1718,
481 /* Find which quirks are needed for a particular vendor/ model pair */
482 static void find_quirks(void)
485 dmi_check_system(acer_quirks);
486 } else if (force_series == 2490) {
487 quirks = &quirk_acer_travelmate_2490;
491 quirks = &quirk_unknown;
497 * General interface convenience methods
500 static bool has_cap(u32 cap)
502 if ((interface->capability & cap) != 0)
509 * AMW0 (V1) interface
526 static acpi_status wmab_execute(struct wmab_args *regbuf,
527 struct acpi_buffer *result)
529 struct acpi_buffer input;
531 input.length = sizeof(struct wmab_args);
532 input.pointer = (u8 *)regbuf;
534 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
539 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
540 struct wmi_interface *iface)
546 case ACER_CAP_MAILLED:
547 switch (quirks->mailled) {
549 err = ec_read(0xA, &result);
552 *value = (result >> 7) & 0x1;
556 case ACER_CAP_WIRELESS:
557 switch (quirks->wireless) {
559 err = ec_read(0x7B, &result);
562 *value = result & 0x1;
565 err = ec_read(0x71, &result);
568 *value = result & 0x1;
571 err = ec_read(0x78, &result);
574 *value = result & 0x1;
577 err = ec_read(0xA, &result);
580 *value = (result >> 2) & 0x1;
584 case ACER_CAP_BLUETOOTH:
585 switch (quirks->bluetooth) {
587 err = ec_read(0xA, &result);
590 *value = (result >> 4) & 0x1;
594 case ACER_CAP_BRIGHTNESS:
595 switch (quirks->brightness) {
597 err = ec_read(0x83, &result);
610 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
612 struct wmab_args args;
614 args.eax = ACER_AMW0_WRITE;
615 args.ebx = value ? (1<<8) : 0;
616 args.ecx = args.edx = 0;
619 case ACER_CAP_MAILLED:
621 return AE_BAD_PARAMETER;
622 args.ebx |= ACER_AMW0_MAILLED_MASK;
624 case ACER_CAP_WIRELESS:
626 return AE_BAD_PARAMETER;
627 args.ebx |= ACER_AMW0_WIRELESS_MASK;
629 case ACER_CAP_BLUETOOTH:
631 return AE_BAD_PARAMETER;
632 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
634 case ACER_CAP_BRIGHTNESS:
635 if (value > max_brightness)
636 return AE_BAD_PARAMETER;
637 switch (quirks->brightness) {
639 return ec_write(0x83, value);
646 /* Actually do the set */
647 return wmab_execute(&args, NULL);
650 static acpi_status AMW0_find_mailled(void)
652 struct wmab_args args;
654 acpi_status status = AE_OK;
655 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
659 args.ebx = args.ecx = args.edx = 0;
661 status = wmab_execute(&args, &out);
662 if (ACPI_FAILURE(status))
665 obj = (union acpi_object *) out.pointer;
666 if (obj && obj->type == ACPI_TYPE_BUFFER &&
667 obj->buffer.length == sizeof(struct wmab_ret)) {
668 ret = *((struct wmab_ret *) obj->buffer.pointer);
675 interface->capability |= ACER_CAP_MAILLED;
682 static acpi_status AMW0_set_capabilities(void)
684 struct wmab_args args;
687 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
688 union acpi_object *obj;
691 * On laptops with this strange GUID (non Acer), normal probing doesn't
694 if (wmi_has_guid(AMW0_GUID2)) {
695 interface->capability |= ACER_CAP_WIRELESS;
699 args.eax = ACER_AMW0_WRITE;
700 args.ecx = args.edx = 0;
702 args.ebx = 0xa2 << 8;
703 args.ebx |= ACER_AMW0_WIRELESS_MASK;
705 status = wmab_execute(&args, &out);
706 if (ACPI_FAILURE(status))
710 if (obj && obj->type == ACPI_TYPE_BUFFER &&
711 obj->buffer.length == sizeof(struct wmab_ret)) {
712 ret = *((struct wmab_ret *) obj->buffer.pointer);
719 interface->capability |= ACER_CAP_WIRELESS;
722 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
725 * It's ok to use existing buffer for next wmab_execute call.
726 * But we need to kfree(out.pointer) if next wmab_execute fail.
728 status = wmab_execute(&args, &out);
729 if (ACPI_FAILURE(status))
732 obj = (union acpi_object *) out.pointer;
733 if (obj && obj->type == ACPI_TYPE_BUFFER
734 && obj->buffer.length == sizeof(struct wmab_ret)) {
735 ret = *((struct wmab_ret *) obj->buffer.pointer);
742 interface->capability |= ACER_CAP_BLUETOOTH;
745 * This appears to be safe to enable, since all Wistron based laptops
746 * appear to use the same EC register for brightness, even if they
747 * differ for wireless, etc
749 if (quirks->brightness >= 0)
750 interface->capability |= ACER_CAP_BRIGHTNESS;
758 static struct wmi_interface AMW0_interface = {
762 static struct wmi_interface AMW0_V2_interface = {
763 .type = ACER_AMW0_V2,
767 * New interface (The WMID interface)
770 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
772 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
773 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
774 union acpi_object *obj;
778 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
780 if (ACPI_FAILURE(status))
783 obj = (union acpi_object *) result.pointer;
784 if (obj && obj->type == ACPI_TYPE_BUFFER &&
785 (obj->buffer.length == sizeof(u32) ||
786 obj->buffer.length == sizeof(u64))) {
787 tmp = *((u32 *) obj->buffer.pointer);
788 } else if (obj->type == ACPI_TYPE_INTEGER) {
789 tmp = (u32) obj->integer.value;
797 kfree(result.pointer);
802 static acpi_status WMID_get_u32(u32 *value, u32 cap,
803 struct wmi_interface *iface)
807 u32 result, method_id = 0;
810 case ACER_CAP_WIRELESS:
811 method_id = ACER_WMID_GET_WIRELESS_METHODID;
813 case ACER_CAP_BLUETOOTH:
814 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
816 case ACER_CAP_BRIGHTNESS:
817 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
819 case ACER_CAP_THREEG:
820 method_id = ACER_WMID_GET_THREEG_METHODID;
822 case ACER_CAP_MAILLED:
823 if (quirks->mailled == 1) {
831 status = WMI_execute_u32(method_id, 0, &result);
833 if (ACPI_SUCCESS(status))
839 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
845 case ACER_CAP_BRIGHTNESS:
846 if (value > max_brightness)
847 return AE_BAD_PARAMETER;
848 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
850 case ACER_CAP_WIRELESS:
852 return AE_BAD_PARAMETER;
853 method_id = ACER_WMID_SET_WIRELESS_METHODID;
855 case ACER_CAP_BLUETOOTH:
857 return AE_BAD_PARAMETER;
858 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
860 case ACER_CAP_THREEG:
862 return AE_BAD_PARAMETER;
863 method_id = ACER_WMID_SET_THREEG_METHODID;
865 case ACER_CAP_MAILLED:
867 return AE_BAD_PARAMETER;
868 if (quirks->mailled == 1) {
869 param = value ? 0x92 : 0x93;
871 i8042_command(¶m, 0x1059);
879 return WMI_execute_u32(method_id, (u32)value, NULL);
882 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
884 struct wmid3_gds_return_value return_value;
886 union acpi_object *obj;
887 struct wmid3_gds_input_param params = {
889 .hotkey_number = 0x01,
892 struct acpi_buffer input = {
893 sizeof(struct wmid3_gds_input_param),
896 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
898 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
899 if (ACPI_FAILURE(status))
902 obj = output.pointer;
906 else if (obj->type != ACPI_TYPE_BUFFER) {
910 if (obj->buffer.length != 8) {
911 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
916 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
919 if (return_value.error_code || return_value.ec_return_value)
920 pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
922 return_value.error_code,
923 return_value.ec_return_value);
925 *value = !!(return_value.devices & device);
930 static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
935 case ACER_CAP_WIRELESS:
936 device = ACER_WMID3_GDS_WIRELESS;
938 case ACER_CAP_BLUETOOTH:
939 device = ACER_WMID3_GDS_BLUETOOTH;
941 case ACER_CAP_THREEG:
942 device = ACER_WMID3_GDS_THREEG;
947 return wmid3_get_device_status(value, device);
950 static acpi_status wmid3_set_device_status(u32 value, u16 device)
952 struct wmid3_gds_return_value return_value;
954 union acpi_object *obj;
956 struct wmid3_gds_input_param params = {
958 .hotkey_number = 0x01,
959 .devices = commun_func_bitmap,
961 struct acpi_buffer input = {
962 sizeof(struct wmid3_gds_input_param),
965 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
966 struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
968 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
969 if (ACPI_FAILURE(status))
972 obj = output.pointer;
976 else if (obj->type != ACPI_TYPE_BUFFER) {
980 if (obj->buffer.length != 8) {
981 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
986 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
989 if (return_value.error_code || return_value.ec_return_value) {
990 pr_warning("Get Current Device Status failed: "
991 "0x%x - 0x%x\n", return_value.error_code,
992 return_value.ec_return_value);
996 devices = return_value.devices;
997 params.function_num = 0x2;
998 params.hotkey_number = 0x01;
999 params.devices = (value) ? (devices | device) : (devices & ~device);
1001 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
1002 if (ACPI_FAILURE(status))
1005 obj = output2.pointer;
1009 else if (obj->type != ACPI_TYPE_BUFFER) {
1013 if (obj->buffer.length != 4) {
1014 pr_warning("Unknown buffer length %d\n", obj->buffer.length);
1019 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1022 if (return_value.error_code || return_value.ec_return_value)
1023 pr_warning("Set Device Status failed: "
1024 "0x%x - 0x%x\n", return_value.error_code,
1025 return_value.ec_return_value);
1030 static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1035 case ACER_CAP_WIRELESS:
1036 device = ACER_WMID3_GDS_WIRELESS;
1038 case ACER_CAP_BLUETOOTH:
1039 device = ACER_WMID3_GDS_BLUETOOTH;
1041 case ACER_CAP_THREEG:
1042 device = ACER_WMID3_GDS_THREEG;
1047 return wmid3_set_device_status(value, device);
1050 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1052 struct hotkey_function_type_aa *type_aa;
1054 /* We are looking for OEM-specific Type AAh */
1055 if (header->type != 0xAA)
1059 type_aa = (struct hotkey_function_type_aa *) header;
1061 pr_info("Function bitmap for Communication Button: 0x%x\n",
1062 type_aa->commun_func_bitmap);
1063 commun_func_bitmap = type_aa->commun_func_bitmap;
1065 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1066 interface->capability |= ACER_CAP_WIRELESS;
1067 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1068 interface->capability |= ACER_CAP_THREEG;
1069 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1070 interface->capability |= ACER_CAP_BLUETOOTH;
1073 static acpi_status WMID_set_capabilities(void)
1075 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1076 union acpi_object *obj;
1080 status = wmi_query_block(WMID_GUID2, 1, &out);
1081 if (ACPI_FAILURE(status))
1084 obj = (union acpi_object *) out.pointer;
1085 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1086 (obj->buffer.length == sizeof(u32) ||
1087 obj->buffer.length == sizeof(u64))) {
1088 devices = *((u32 *) obj->buffer.pointer);
1089 } else if (obj->type == ACPI_TYPE_INTEGER) {
1090 devices = (u32) obj->integer.value;
1096 pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1098 interface->capability |= ACER_CAP_WIRELESS;
1100 interface->capability |= ACER_CAP_THREEG;
1102 interface->capability |= ACER_CAP_BLUETOOTH;
1104 if (!(devices & 0x20))
1105 max_brightness = 0x9;
1111 static struct wmi_interface wmid_interface = {
1115 static struct wmi_interface wmid_v2_interface = {
1116 .type = ACER_WMID_v2,
1120 * Generic Device (interface-independent)
1123 static acpi_status get_u32(u32 *value, u32 cap)
1125 acpi_status status = AE_ERROR;
1127 switch (interface->type) {
1129 status = AMW0_get_u32(value, cap, interface);
1132 if (cap == ACER_CAP_MAILLED) {
1133 status = AMW0_get_u32(value, cap, interface);
1137 status = WMID_get_u32(value, cap, interface);
1140 if (cap & (ACER_CAP_WIRELESS |
1141 ACER_CAP_BLUETOOTH |
1143 status = wmid_v2_get_u32(value, cap);
1144 else if (wmi_has_guid(WMID_GUID2))
1145 status = WMID_get_u32(value, cap, interface);
1152 static acpi_status set_u32(u32 value, u32 cap)
1156 if (interface->capability & cap) {
1157 switch (interface->type) {
1159 return AMW0_set_u32(value, cap, interface);
1161 if (cap == ACER_CAP_MAILLED)
1162 return AMW0_set_u32(value, cap, interface);
1165 * On some models, some WMID methods don't toggle
1166 * properly. For those cases, we want to run the AMW0
1167 * method afterwards to be certain we've really toggled
1170 if (cap == ACER_CAP_WIRELESS ||
1171 cap == ACER_CAP_BLUETOOTH) {
1172 status = WMID_set_u32(value, cap, interface);
1173 if (ACPI_FAILURE(status))
1176 return AMW0_set_u32(value, cap, interface);
1179 return WMID_set_u32(value, cap, interface);
1181 if (cap & (ACER_CAP_WIRELESS |
1182 ACER_CAP_BLUETOOTH |
1184 return wmid_v2_set_u32(value, cap);
1185 else if (wmi_has_guid(WMID_GUID2))
1186 return WMID_set_u32(value, cap, interface);
1188 return AE_BAD_PARAMETER;
1191 return AE_BAD_PARAMETER;
1194 static void __init acer_commandline_init(void)
1197 * These will all fail silently if the value given is invalid, or the
1198 * capability isn't available on the given interface
1201 set_u32(mailled, ACER_CAP_MAILLED);
1202 if (!has_type_aa && threeg >= 0)
1203 set_u32(threeg, ACER_CAP_THREEG);
1204 if (brightness >= 0)
1205 set_u32(brightness, ACER_CAP_BRIGHTNESS);
1209 * LED device (Mail LED only, no other LEDs known yet)
1211 static void mail_led_set(struct led_classdev *led_cdev,
1212 enum led_brightness value)
1214 set_u32(value, ACER_CAP_MAILLED);
1217 static struct led_classdev mail_led = {
1218 .name = "acer-wmi::mail",
1219 .brightness_set = mail_led_set,
1222 static int __devinit acer_led_init(struct device *dev)
1224 return led_classdev_register(dev, &mail_led);
1227 static void acer_led_exit(void)
1229 set_u32(LED_OFF, ACER_CAP_MAILLED);
1230 led_classdev_unregister(&mail_led);
1236 static struct backlight_device *acer_backlight_device;
1238 static int read_brightness(struct backlight_device *bd)
1241 get_u32(&value, ACER_CAP_BRIGHTNESS);
1245 static int update_bl_status(struct backlight_device *bd)
1247 int intensity = bd->props.brightness;
1249 if (bd->props.power != FB_BLANK_UNBLANK)
1251 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1254 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1259 static const struct backlight_ops acer_bl_ops = {
1260 .get_brightness = read_brightness,
1261 .update_status = update_bl_status,
1264 static int __devinit acer_backlight_init(struct device *dev)
1266 struct backlight_properties props;
1267 struct backlight_device *bd;
1269 memset(&props, 0, sizeof(struct backlight_properties));
1270 props.type = BACKLIGHT_PLATFORM;
1271 props.max_brightness = max_brightness;
1272 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1275 pr_err("Could not register Acer backlight device\n");
1276 acer_backlight_device = NULL;
1280 acer_backlight_device = bd;
1282 bd->props.power = FB_BLANK_UNBLANK;
1283 bd->props.brightness = read_brightness(bd);
1284 backlight_update_status(bd);
1288 static void acer_backlight_exit(void)
1290 backlight_device_unregister(acer_backlight_device);
1296 static void acer_rfkill_update(struct work_struct *ignored);
1297 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1298 static void acer_rfkill_update(struct work_struct *ignored)
1303 if (has_cap(ACER_CAP_WIRELESS)) {
1304 status = get_u32(&state, ACER_CAP_WIRELESS);
1305 if (ACPI_SUCCESS(status)) {
1306 if (quirks->wireless == 3)
1307 rfkill_set_hw_state(wireless_rfkill, !state);
1309 rfkill_set_sw_state(wireless_rfkill, !state);
1313 if (has_cap(ACER_CAP_BLUETOOTH)) {
1314 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1315 if (ACPI_SUCCESS(status))
1316 rfkill_set_sw_state(bluetooth_rfkill, !state);
1319 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1320 status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1321 if (ACPI_SUCCESS(status))
1322 rfkill_set_sw_state(threeg_rfkill, !state);
1325 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1328 static int acer_rfkill_set(void *data, bool blocked)
1331 u32 cap = (unsigned long)data;
1333 if (rfkill_inited) {
1334 status = set_u32(!blocked, cap);
1335 if (ACPI_FAILURE(status))
1342 static const struct rfkill_ops acer_rfkill_ops = {
1343 .set_block = acer_rfkill_set,
1346 static struct rfkill *acer_rfkill_register(struct device *dev,
1347 enum rfkill_type type,
1348 char *name, u32 cap)
1351 struct rfkill *rfkill_dev;
1355 rfkill_dev = rfkill_alloc(name, dev, type,
1357 (void *)(unsigned long)cap);
1359 return ERR_PTR(-ENOMEM);
1361 status = get_u32(&state, cap);
1363 err = rfkill_register(rfkill_dev);
1365 rfkill_destroy(rfkill_dev);
1366 return ERR_PTR(err);
1369 if (ACPI_SUCCESS(status))
1370 rfkill_set_sw_state(rfkill_dev, !state);
1375 static int acer_rfkill_init(struct device *dev)
1379 if (has_cap(ACER_CAP_WIRELESS)) {
1380 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1381 "acer-wireless", ACER_CAP_WIRELESS);
1382 if (IS_ERR(wireless_rfkill)) {
1383 err = PTR_ERR(wireless_rfkill);
1384 goto error_wireless;
1388 if (has_cap(ACER_CAP_BLUETOOTH)) {
1389 bluetooth_rfkill = acer_rfkill_register(dev,
1390 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1391 ACER_CAP_BLUETOOTH);
1392 if (IS_ERR(bluetooth_rfkill)) {
1393 err = PTR_ERR(bluetooth_rfkill);
1394 goto error_bluetooth;
1398 if (has_cap(ACER_CAP_THREEG)) {
1399 threeg_rfkill = acer_rfkill_register(dev,
1400 RFKILL_TYPE_WWAN, "acer-threeg",
1402 if (IS_ERR(threeg_rfkill)) {
1403 err = PTR_ERR(threeg_rfkill);
1408 rfkill_inited = true;
1410 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1411 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1412 schedule_delayed_work(&acer_rfkill_work,
1413 round_jiffies_relative(HZ));
1418 if (has_cap(ACER_CAP_BLUETOOTH)) {
1419 rfkill_unregister(bluetooth_rfkill);
1420 rfkill_destroy(bluetooth_rfkill);
1423 if (has_cap(ACER_CAP_WIRELESS)) {
1424 rfkill_unregister(wireless_rfkill);
1425 rfkill_destroy(wireless_rfkill);
1431 static void acer_rfkill_exit(void)
1433 if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1434 has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1435 cancel_delayed_work_sync(&acer_rfkill_work);
1437 if (has_cap(ACER_CAP_WIRELESS)) {
1438 rfkill_unregister(wireless_rfkill);
1439 rfkill_destroy(wireless_rfkill);
1442 if (has_cap(ACER_CAP_BLUETOOTH)) {
1443 rfkill_unregister(bluetooth_rfkill);
1444 rfkill_destroy(bluetooth_rfkill);
1447 if (has_cap(ACER_CAP_THREEG)) {
1448 rfkill_unregister(threeg_rfkill);
1449 rfkill_destroy(threeg_rfkill);
1457 static ssize_t show_bool_threeg(struct device *dev,
1458 struct device_attribute *attr, char *buf)
1463 pr_info("This threeg sysfs will be removed in 2012"
1464 " - used by: %s\n", current->comm);
1465 status = get_u32(&result, ACER_CAP_THREEG);
1466 if (ACPI_SUCCESS(status))
1467 return sprintf(buf, "%u\n", result);
1468 return sprintf(buf, "Read error\n");
1471 static ssize_t set_bool_threeg(struct device *dev,
1472 struct device_attribute *attr, const char *buf, size_t count)
1474 u32 tmp = simple_strtoul(buf, NULL, 10);
1475 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1476 pr_info("This threeg sysfs will be removed in 2012"
1477 " - used by: %s\n", current->comm);
1478 if (ACPI_FAILURE(status))
1482 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1485 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1488 pr_info("This interface sysfs will be removed in 2012"
1489 " - used by: %s\n", current->comm);
1490 switch (interface->type) {
1492 return sprintf(buf, "AMW0\n");
1494 return sprintf(buf, "AMW0 v2\n");
1496 return sprintf(buf, "WMID\n");
1498 return sprintf(buf, "WMID v2\n");
1500 return sprintf(buf, "Error!\n");
1504 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1506 static void acer_wmi_notify(u32 value, void *context)
1508 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1509 union acpi_object *obj;
1510 struct event_return_value return_value;
1513 const struct key_entry *key;
1515 status = wmi_get_event_data(value, &response);
1516 if (status != AE_OK) {
1517 pr_warn("bad event status 0x%x\n", status);
1521 obj = (union acpi_object *)response.pointer;
1525 if (obj->type != ACPI_TYPE_BUFFER) {
1526 pr_warn("Unknown response received %d\n", obj->type);
1530 if (obj->buffer.length != 8) {
1531 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1536 return_value = *((struct event_return_value *)obj->buffer.pointer);
1539 switch (return_value.function) {
1540 case WMID_HOTKEY_EVENT:
1541 device_state = return_value.device_state;
1542 pr_debug("device state: 0x%x\n", device_state);
1544 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1545 return_value.key_num);
1547 pr_warn("Unknown key number - 0x%x\n",
1548 return_value.key_num);
1550 switch (key->keycode) {
1553 if (has_cap(ACER_CAP_WIRELESS))
1554 rfkill_set_sw_state(wireless_rfkill,
1555 !(device_state & ACER_WMID3_GDS_WIRELESS));
1556 if (has_cap(ACER_CAP_THREEG))
1557 rfkill_set_sw_state(threeg_rfkill,
1558 !(device_state & ACER_WMID3_GDS_THREEG));
1559 if (has_cap(ACER_CAP_BLUETOOTH))
1560 rfkill_set_sw_state(bluetooth_rfkill,
1561 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1564 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1569 pr_warn("Unknown function number - %d - %d\n",
1570 return_value.function, return_value.key_num);
1576 wmid3_set_lm_mode(struct lm_input_params *params,
1577 struct lm_return_value *return_value)
1580 union acpi_object *obj;
1582 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1583 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1585 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1586 if (ACPI_FAILURE(status))
1589 obj = output.pointer;
1593 else if (obj->type != ACPI_TYPE_BUFFER) {
1597 if (obj->buffer.length != 4) {
1598 pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1603 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1609 static int acer_wmi_enable_ec_raw(void)
1611 struct lm_return_value return_value;
1613 struct lm_input_params params = {
1614 .function_num = 0x1,
1615 .commun_devices = 0xFFFF,
1617 .lm_status = 0x00, /* Launch Manager Deactive */
1620 status = wmid3_set_lm_mode(¶ms, &return_value);
1622 if (return_value.error_code || return_value.ec_return_value)
1623 pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1624 return_value.error_code,
1625 return_value.ec_return_value);
1627 pr_info("Enabled EC raw mode\n");
1632 static int acer_wmi_enable_lm(void)
1634 struct lm_return_value return_value;
1636 struct lm_input_params params = {
1637 .function_num = 0x1,
1638 .commun_devices = 0xFFFF,
1640 .lm_status = 0x01, /* Launch Manager Active */
1643 status = wmid3_set_lm_mode(¶ms, &return_value);
1645 if (return_value.error_code || return_value.ec_return_value)
1646 pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1647 return_value.error_code,
1648 return_value.ec_return_value);
1653 static int __init acer_wmi_input_setup(void)
1658 acer_wmi_input_dev = input_allocate_device();
1659 if (!acer_wmi_input_dev)
1662 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1663 acer_wmi_input_dev->phys = "wmi/input0";
1664 acer_wmi_input_dev->id.bustype = BUS_HOST;
1666 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1670 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1671 acer_wmi_notify, NULL);
1672 if (ACPI_FAILURE(status)) {
1674 goto err_free_keymap;
1677 err = input_register_device(acer_wmi_input_dev);
1679 goto err_uninstall_notifier;
1683 err_uninstall_notifier:
1684 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1686 sparse_keymap_free(acer_wmi_input_dev);
1688 input_free_device(acer_wmi_input_dev);
1692 static void acer_wmi_input_destroy(void)
1694 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1695 sparse_keymap_free(acer_wmi_input_dev);
1696 input_unregister_device(acer_wmi_input_dev);
1702 static u32 get_wmid_devices(void)
1704 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1705 union acpi_object *obj;
1709 status = wmi_query_block(WMID_GUID2, 1, &out);
1710 if (ACPI_FAILURE(status))
1713 obj = (union acpi_object *) out.pointer;
1714 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1715 (obj->buffer.length == sizeof(u32) ||
1716 obj->buffer.length == sizeof(u64))) {
1717 devices = *((u32 *) obj->buffer.pointer);
1718 } else if (obj->type == ACPI_TYPE_INTEGER) {
1719 devices = (u32) obj->integer.value;
1729 static int __devinit acer_platform_probe(struct platform_device *device)
1733 if (has_cap(ACER_CAP_MAILLED)) {
1734 err = acer_led_init(&device->dev);
1739 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1740 err = acer_backlight_init(&device->dev);
1742 goto error_brightness;
1745 err = acer_rfkill_init(&device->dev);
1752 if (has_cap(ACER_CAP_BRIGHTNESS))
1753 acer_backlight_exit();
1755 if (has_cap(ACER_CAP_MAILLED))
1761 static int acer_platform_remove(struct platform_device *device)
1763 if (has_cap(ACER_CAP_MAILLED))
1765 if (has_cap(ACER_CAP_BRIGHTNESS))
1766 acer_backlight_exit();
1772 static int acer_platform_suspend(struct platform_device *dev,
1776 struct acer_data *data = &interface->data;
1781 if (has_cap(ACER_CAP_MAILLED)) {
1782 get_u32(&value, ACER_CAP_MAILLED);
1783 set_u32(LED_OFF, ACER_CAP_MAILLED);
1784 data->mailled = value;
1787 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1788 get_u32(&value, ACER_CAP_BRIGHTNESS);
1789 data->brightness = value;
1795 static int acer_platform_resume(struct platform_device *device)
1797 struct acer_data *data = &interface->data;
1802 if (has_cap(ACER_CAP_MAILLED))
1803 set_u32(data->mailled, ACER_CAP_MAILLED);
1805 if (has_cap(ACER_CAP_BRIGHTNESS))
1806 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1811 static void acer_platform_shutdown(struct platform_device *device)
1813 struct acer_data *data = &interface->data;
1818 if (has_cap(ACER_CAP_MAILLED))
1819 set_u32(LED_OFF, ACER_CAP_MAILLED);
1822 static struct platform_driver acer_platform_driver = {
1825 .owner = THIS_MODULE,
1827 .probe = acer_platform_probe,
1828 .remove = acer_platform_remove,
1829 .suspend = acer_platform_suspend,
1830 .resume = acer_platform_resume,
1831 .shutdown = acer_platform_shutdown,
1834 static struct platform_device *acer_platform_device;
1836 static int remove_sysfs(struct platform_device *device)
1838 if (has_cap(ACER_CAP_THREEG))
1839 device_remove_file(&device->dev, &dev_attr_threeg);
1841 device_remove_file(&device->dev, &dev_attr_interface);
1846 static int create_sysfs(void)
1848 int retval = -ENOMEM;
1850 if (has_cap(ACER_CAP_THREEG)) {
1851 retval = device_create_file(&acer_platform_device->dev,
1857 retval = device_create_file(&acer_platform_device->dev,
1858 &dev_attr_interface);
1865 remove_sysfs(acer_platform_device);
1869 static void remove_debugfs(void)
1871 debugfs_remove(interface->debug.devices);
1872 debugfs_remove(interface->debug.root);
1875 static int create_debugfs(void)
1877 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1878 if (!interface->debug.root) {
1879 pr_err("Failed to create debugfs directory");
1883 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1884 interface->debug.root,
1885 &interface->debug.wmid_devices);
1886 if (!interface->debug.devices)
1896 static int __init acer_wmi_init(void)
1900 pr_info("Acer Laptop ACPI-WMI Extras\n");
1902 if (dmi_check_system(acer_blacklist)) {
1903 pr_info("Blacklisted hardware detected - not loading\n");
1910 * Detect which ACPI-WMI interface we're using.
1912 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1913 interface = &AMW0_V2_interface;
1915 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1916 interface = &wmid_interface;
1918 if (wmi_has_guid(WMID_GUID3))
1919 interface = &wmid_v2_interface;
1922 dmi_walk(type_aa_dmi_decode, NULL);
1924 if (wmi_has_guid(WMID_GUID2) && interface) {
1925 if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
1926 pr_err("Unable to detect available WMID devices\n");
1929 /* WMID always provides brightness methods */
1930 interface->capability |= ACER_CAP_BRIGHTNESS;
1931 } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
1932 pr_err("No WMID device detection method found\n");
1936 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1937 interface = &AMW0_interface;
1939 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1940 pr_err("Unable to detect available AMW0 devices\n");
1945 if (wmi_has_guid(AMW0_GUID1))
1946 AMW0_find_mailled();
1949 pr_err("No or unsupported WMI interface, unable to load\n");
1955 if (acpi_video_backlight_support()) {
1956 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1957 pr_info("Brightness must be controlled by "
1958 "generic video driver\n");
1961 if (wmi_has_guid(WMID_GUID3)) {
1963 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1964 pr_err("Cannot enable EC raw mode\n");
1967 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1968 pr_err("Cannot enable Launch Manager mode\n");
1971 } else if (ec_raw_mode) {
1972 pr_info("No WMID EC raw mode enable method\n");
1975 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1976 err = acer_wmi_input_setup();
1981 err = platform_driver_register(&acer_platform_driver);
1983 pr_err("Unable to register platform driver.\n");
1984 goto error_platform_register;
1987 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1988 if (!acer_platform_device) {
1990 goto error_device_alloc;
1993 err = platform_device_add(acer_platform_device);
1995 goto error_device_add;
1997 err = create_sysfs();
1999 goto error_create_sys;
2001 if (wmi_has_guid(WMID_GUID2)) {
2002 interface->debug.wmid_devices = get_wmid_devices();
2003 err = create_debugfs();
2005 goto error_create_debugfs;
2008 /* Override any initial settings with values from the commandline */
2009 acer_commandline_init();
2013 error_create_debugfs:
2014 remove_sysfs(acer_platform_device);
2016 platform_device_del(acer_platform_device);
2018 platform_device_put(acer_platform_device);
2020 platform_driver_unregister(&acer_platform_driver);
2021 error_platform_register:
2022 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2023 acer_wmi_input_destroy();
2028 static void __exit acer_wmi_exit(void)
2030 if (wmi_has_guid(ACERWMID_EVENT_GUID))
2031 acer_wmi_input_destroy();
2033 remove_sysfs(acer_platform_device);
2035 platform_device_unregister(acer_platform_device);
2036 platform_driver_unregister(&acer_platform_driver);
2038 pr_info("Acer Laptop WMI Extras unloaded\n");
2042 module_init(acer_wmi_init);
2043 module_exit(acer_wmi_exit);