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 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/dmi.h>
31 #include <linux/backlight.h>
32 #include <linux/leds.h>
33 #include <linux/platform_device.h>
34 #include <linux/acpi.h>
35 #include <linux/i8042.h>
36 #include <linux/rfkill.h>
37 #include <linux/workqueue.h>
38 #include <linux/debugfs.h>
39 #include <linux/slab.h>
40 #include <linux/input.h>
41 #include <linux/input/sparse-keymap.h>
42 #include <linux/dmi.h>
44 #include <acpi/acpi_drivers.h>
46 MODULE_AUTHOR("Carlos Corbacho");
47 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
48 MODULE_LICENSE("GPL");
50 #define ACER_LOGPREFIX "acer-wmi: "
51 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
52 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
53 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
54 #define ACER_WARNING KERN_WARNING ACER_LOGPREFIX
58 * Meaning is unknown - this number is required for writing to ACPI for AMW0
59 * (it's also used in acerhk when directly accessing the BIOS)
61 #define ACER_AMW0_WRITE 0x9610
64 * Bit masks for the AMW0 interface
66 #define ACER_AMW0_WIRELESS_MASK 0x35
67 #define ACER_AMW0_BLUETOOTH_MASK 0x34
68 #define ACER_AMW0_MAILLED_MASK 0x31
71 * Method IDs for WMID interface
73 #define ACER_WMID_GET_WIRELESS_METHODID 1
74 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
75 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
76 #define ACER_WMID_SET_WIRELESS_METHODID 4
77 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
78 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
79 #define ACER_WMID_GET_THREEG_METHODID 10
80 #define ACER_WMID_SET_THREEG_METHODID 11
83 * Acer ACPI method GUIDs
85 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
86 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
87 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
88 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
89 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
92 * Acer ACPI event GUIDs
94 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
96 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
97 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
98 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
100 enum acer_wmi_event_ids {
101 WMID_HOTKEY_EVENT = 0x1,
104 static const struct key_entry acer_wmi_keymap[] = {
105 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
106 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
107 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
108 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
109 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
110 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
111 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
112 {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */
116 static struct input_dev *acer_wmi_input_dev;
118 struct event_return_value {
123 } __attribute__((packed));
126 * GUID3 Get Device Status device flags
128 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
129 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
130 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
132 struct lm_input_params {
133 u8 function_num; /* Function Number */
134 u16 commun_devices; /* Communication type devices default status */
135 u16 devices; /* Other type devices default status */
136 u8 lm_status; /* Launch Manager Status */
138 } __attribute__((packed));
140 struct lm_return_value {
141 u8 error_code; /* Error Code */
142 u8 ec_return_value; /* EC Return Value */
144 } __attribute__((packed));
146 struct wmid3_gds_input_param { /* Get Device Status input parameter */
147 u8 function_num; /* Function Number */
148 u8 hotkey_number; /* Hotkey Number */
149 u16 devices; /* Get Device */
150 } __attribute__((packed));
152 struct wmid3_gds_return_value { /* Get Device Status return value*/
153 u8 error_code; /* Error Code */
154 u8 ec_return_value; /* EC Return Value */
155 u16 devices; /* Current Device Status */
157 } __attribute__((packed));
159 struct hotkey_function_type_aa {
163 u16 commun_func_bitmap;
164 } __attribute__((packed));
167 * Interface capability flags
169 #define ACER_CAP_MAILLED (1<<0)
170 #define ACER_CAP_WIRELESS (1<<1)
171 #define ACER_CAP_BLUETOOTH (1<<2)
172 #define ACER_CAP_BRIGHTNESS (1<<3)
173 #define ACER_CAP_THREEG (1<<4)
174 #define ACER_CAP_ANY (0xFFFFFFFF)
177 * Interface type flags
179 enum interface_flags {
185 #define ACER_DEFAULT_WIRELESS 0
186 #define ACER_DEFAULT_BLUETOOTH 0
187 #define ACER_DEFAULT_MAILLED 0
188 #define ACER_DEFAULT_THREEG 0
190 static int max_brightness = 0xF;
192 static int mailled = -1;
193 static int brightness = -1;
194 static int threeg = -1;
195 static int force_series;
196 static bool ec_raw_mode;
197 static bool has_type_aa;
199 module_param(mailled, int, 0444);
200 module_param(brightness, int, 0444);
201 module_param(threeg, int, 0444);
202 module_param(force_series, int, 0444);
203 module_param(ec_raw_mode, bool, 0444);
204 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
205 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
206 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
207 MODULE_PARM_DESC(force_series, "Force a different laptop series");
208 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
218 struct dentry *devices;
222 static struct rfkill *wireless_rfkill;
223 static struct rfkill *bluetooth_rfkill;
224 static struct rfkill *threeg_rfkill;
225 static bool rfkill_inited;
227 /* Each low-level interface must define at least some of the following */
228 struct wmi_interface {
229 /* The WMI device type */
232 /* The capabilities this interface provides */
235 /* Private data for the current interface */
236 struct acer_data data;
238 /* debugfs entries associated with this interface */
239 struct acer_debug debug;
242 /* The static interface pointer, points to the currently detected interface */
243 static struct wmi_interface *interface;
246 * Embedded Controller quirks
247 * Some laptops require us to directly access the EC to either enable or query
248 * features that are not available through WMI.
258 static struct quirk_entry *quirks;
260 static void set_quirks(void)
266 interface->capability |= ACER_CAP_MAILLED;
268 if (quirks->brightness)
269 interface->capability |= ACER_CAP_BRIGHTNESS;
272 static int dmi_matched(const struct dmi_system_id *dmi)
274 quirks = dmi->driver_data;
278 static struct quirk_entry quirk_unknown = {
281 static struct quirk_entry quirk_acer_aspire_1520 = {
285 static struct quirk_entry quirk_acer_travelmate_2490 = {
289 /* This AMW0 laptop has no bluetooth */
290 static struct quirk_entry quirk_medion_md_98300 = {
294 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
298 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
299 static struct dmi_system_id __devinitdata acer_blacklist[] = {
301 .ident = "Acer Aspire One (SSD)",
303 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
304 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
308 .ident = "Acer Aspire One (HDD)",
310 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
311 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
317 static struct dmi_system_id acer_quirks[] = {
319 .callback = dmi_matched,
320 .ident = "Acer Aspire 1360",
322 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
323 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
325 .driver_data = &quirk_acer_aspire_1520,
328 .callback = dmi_matched,
329 .ident = "Acer Aspire 1520",
331 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
332 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
334 .driver_data = &quirk_acer_aspire_1520,
337 .callback = dmi_matched,
338 .ident = "Acer Aspire 3100",
340 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
341 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
343 .driver_data = &quirk_acer_travelmate_2490,
346 .callback = dmi_matched,
347 .ident = "Acer Aspire 3610",
349 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
350 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
352 .driver_data = &quirk_acer_travelmate_2490,
355 .callback = dmi_matched,
356 .ident = "Acer Aspire 5100",
358 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
361 .driver_data = &quirk_acer_travelmate_2490,
364 .callback = dmi_matched,
365 .ident = "Acer Aspire 5610",
367 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
368 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
370 .driver_data = &quirk_acer_travelmate_2490,
373 .callback = dmi_matched,
374 .ident = "Acer Aspire 5630",
376 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
377 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
379 .driver_data = &quirk_acer_travelmate_2490,
382 .callback = dmi_matched,
383 .ident = "Acer Aspire 5650",
385 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
386 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
388 .driver_data = &quirk_acer_travelmate_2490,
391 .callback = dmi_matched,
392 .ident = "Acer Aspire 5680",
394 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
395 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
397 .driver_data = &quirk_acer_travelmate_2490,
400 .callback = dmi_matched,
401 .ident = "Acer Aspire 9110",
403 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
404 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
406 .driver_data = &quirk_acer_travelmate_2490,
409 .callback = dmi_matched,
410 .ident = "Acer TravelMate 2490",
412 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
413 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
415 .driver_data = &quirk_acer_travelmate_2490,
418 .callback = dmi_matched,
419 .ident = "Acer TravelMate 4200",
421 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
422 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
424 .driver_data = &quirk_acer_travelmate_2490,
427 .callback = dmi_matched,
428 .ident = "Fujitsu Siemens Amilo Li 1718",
430 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
431 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
433 .driver_data = &quirk_fujitsu_amilo_li_1718,
436 .callback = dmi_matched,
437 .ident = "Medion MD 98300",
439 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
440 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
442 .driver_data = &quirk_medion_md_98300,
447 /* Find which quirks are needed for a particular vendor/ model pair */
448 static void find_quirks(void)
451 dmi_check_system(acer_quirks);
452 } else if (force_series == 2490) {
453 quirks = &quirk_acer_travelmate_2490;
457 quirks = &quirk_unknown;
463 * General interface convenience methods
466 static bool has_cap(u32 cap)
468 if ((interface->capability & cap) != 0)
475 * AMW0 (V1) interface
492 static acpi_status wmab_execute(struct wmab_args *regbuf,
493 struct acpi_buffer *result)
495 struct acpi_buffer input;
497 input.length = sizeof(struct wmab_args);
498 input.pointer = (u8 *)regbuf;
500 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
505 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
506 struct wmi_interface *iface)
512 case ACER_CAP_MAILLED:
513 switch (quirks->mailled) {
515 err = ec_read(0xA, &result);
518 *value = (result >> 7) & 0x1;
522 case ACER_CAP_WIRELESS:
523 switch (quirks->wireless) {
525 err = ec_read(0x7B, &result);
528 *value = result & 0x1;
531 err = ec_read(0x71, &result);
534 *value = result & 0x1;
537 err = ec_read(0xA, &result);
540 *value = (result >> 2) & 0x1;
544 case ACER_CAP_BLUETOOTH:
545 switch (quirks->bluetooth) {
547 err = ec_read(0xA, &result);
550 *value = (result >> 4) & 0x1;
554 case ACER_CAP_BRIGHTNESS:
555 switch (quirks->brightness) {
557 err = ec_read(0x83, &result);
570 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
572 struct wmab_args args;
574 args.eax = ACER_AMW0_WRITE;
575 args.ebx = value ? (1<<8) : 0;
576 args.ecx = args.edx = 0;
579 case ACER_CAP_MAILLED:
581 return AE_BAD_PARAMETER;
582 args.ebx |= ACER_AMW0_MAILLED_MASK;
584 case ACER_CAP_WIRELESS:
586 return AE_BAD_PARAMETER;
587 args.ebx |= ACER_AMW0_WIRELESS_MASK;
589 case ACER_CAP_BLUETOOTH:
591 return AE_BAD_PARAMETER;
592 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
594 case ACER_CAP_BRIGHTNESS:
595 if (value > max_brightness)
596 return AE_BAD_PARAMETER;
597 switch (quirks->brightness) {
599 return ec_write(0x83, value);
606 /* Actually do the set */
607 return wmab_execute(&args, NULL);
610 static acpi_status AMW0_find_mailled(void)
612 struct wmab_args args;
614 acpi_status status = AE_OK;
615 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
616 union acpi_object *obj;
619 args.ebx = args.ecx = args.edx = 0;
621 status = wmab_execute(&args, &out);
622 if (ACPI_FAILURE(status))
625 obj = (union acpi_object *) out.pointer;
626 if (obj && obj->type == ACPI_TYPE_BUFFER &&
627 obj->buffer.length == sizeof(struct wmab_ret)) {
628 ret = *((struct wmab_ret *) obj->buffer.pointer);
635 interface->capability |= ACER_CAP_MAILLED;
642 static acpi_status AMW0_set_capabilities(void)
644 struct wmab_args args;
647 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
648 union acpi_object *obj;
651 * On laptops with this strange GUID (non Acer), normal probing doesn't
654 if (wmi_has_guid(AMW0_GUID2)) {
655 interface->capability |= ACER_CAP_WIRELESS;
659 args.eax = ACER_AMW0_WRITE;
660 args.ecx = args.edx = 0;
662 args.ebx = 0xa2 << 8;
663 args.ebx |= ACER_AMW0_WIRELESS_MASK;
665 status = wmab_execute(&args, &out);
666 if (ACPI_FAILURE(status))
670 if (obj && obj->type == ACPI_TYPE_BUFFER &&
671 obj->buffer.length == sizeof(struct wmab_ret)) {
672 ret = *((struct wmab_ret *) obj->buffer.pointer);
679 interface->capability |= ACER_CAP_WIRELESS;
682 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
685 * It's ok to use existing buffer for next wmab_execute call.
686 * But we need to kfree(out.pointer) if next wmab_execute fail.
688 status = wmab_execute(&args, &out);
689 if (ACPI_FAILURE(status))
692 obj = (union acpi_object *) out.pointer;
693 if (obj && obj->type == ACPI_TYPE_BUFFER
694 && obj->buffer.length == sizeof(struct wmab_ret)) {
695 ret = *((struct wmab_ret *) obj->buffer.pointer);
702 interface->capability |= ACER_CAP_BLUETOOTH;
705 * This appears to be safe to enable, since all Wistron based laptops
706 * appear to use the same EC register for brightness, even if they
707 * differ for wireless, etc
709 if (quirks->brightness >= 0)
710 interface->capability |= ACER_CAP_BRIGHTNESS;
718 static struct wmi_interface AMW0_interface = {
722 static struct wmi_interface AMW0_V2_interface = {
723 .type = ACER_AMW0_V2,
727 * New interface (The WMID interface)
730 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
732 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
733 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
734 union acpi_object *obj;
738 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
740 if (ACPI_FAILURE(status))
743 obj = (union acpi_object *) result.pointer;
744 if (obj && obj->type == ACPI_TYPE_BUFFER &&
745 obj->buffer.length == sizeof(u32)) {
746 tmp = *((u32 *) obj->buffer.pointer);
754 kfree(result.pointer);
759 static acpi_status WMID_get_u32(u32 *value, u32 cap,
760 struct wmi_interface *iface)
764 u32 result, method_id = 0;
767 case ACER_CAP_WIRELESS:
768 method_id = ACER_WMID_GET_WIRELESS_METHODID;
770 case ACER_CAP_BLUETOOTH:
771 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
773 case ACER_CAP_BRIGHTNESS:
774 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
776 case ACER_CAP_THREEG:
777 method_id = ACER_WMID_GET_THREEG_METHODID;
779 case ACER_CAP_MAILLED:
780 if (quirks->mailled == 1) {
788 status = WMI_execute_u32(method_id, 0, &result);
790 if (ACPI_SUCCESS(status))
796 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
802 case ACER_CAP_BRIGHTNESS:
803 if (value > max_brightness)
804 return AE_BAD_PARAMETER;
805 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
807 case ACER_CAP_WIRELESS:
809 return AE_BAD_PARAMETER;
810 method_id = ACER_WMID_SET_WIRELESS_METHODID;
812 case ACER_CAP_BLUETOOTH:
814 return AE_BAD_PARAMETER;
815 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
817 case ACER_CAP_THREEG:
819 return AE_BAD_PARAMETER;
820 method_id = ACER_WMID_SET_THREEG_METHODID;
822 case ACER_CAP_MAILLED:
824 return AE_BAD_PARAMETER;
825 if (quirks->mailled == 1) {
826 param = value ? 0x92 : 0x93;
828 i8042_command(¶m, 0x1059);
836 return WMI_execute_u32(method_id, (u32)value, NULL);
839 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
841 struct hotkey_function_type_aa *type_aa;
843 /* We are looking for OEM-specific Type AAh */
844 if (header->type != 0xAA)
848 type_aa = (struct hotkey_function_type_aa *) header;
850 printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n",
851 type_aa->commun_func_bitmap);
853 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
854 interface->capability |= ACER_CAP_WIRELESS;
855 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
856 interface->capability |= ACER_CAP_THREEG;
857 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
858 interface->capability |= ACER_CAP_BLUETOOTH;
861 static acpi_status WMID_set_capabilities(void)
863 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
864 union acpi_object *obj;
868 status = wmi_query_block(WMID_GUID2, 1, &out);
869 if (ACPI_FAILURE(status))
872 obj = (union acpi_object *) out.pointer;
873 if (obj && obj->type == ACPI_TYPE_BUFFER &&
874 obj->buffer.length == sizeof(u32)) {
875 devices = *((u32 *) obj->buffer.pointer);
881 dmi_walk(type_aa_dmi_decode, NULL);
883 interface->capability |= ACER_CAP_WIRELESS;
884 interface->capability |= ACER_CAP_THREEG;
886 interface->capability |= ACER_CAP_BLUETOOTH;
889 /* WMID always provides brightness methods */
890 interface->capability |= ACER_CAP_BRIGHTNESS;
892 if (!(devices & 0x20))
893 max_brightness = 0x9;
899 static struct wmi_interface wmid_interface = {
904 * Generic Device (interface-independent)
907 static acpi_status get_u32(u32 *value, u32 cap)
909 acpi_status status = AE_ERROR;
911 switch (interface->type) {
913 status = AMW0_get_u32(value, cap, interface);
916 if (cap == ACER_CAP_MAILLED) {
917 status = AMW0_get_u32(value, cap, interface);
921 status = WMID_get_u32(value, cap, interface);
928 static acpi_status set_u32(u32 value, u32 cap)
932 if (interface->capability & cap) {
933 switch (interface->type) {
935 return AMW0_set_u32(value, cap, interface);
937 if (cap == ACER_CAP_MAILLED)
938 return AMW0_set_u32(value, cap, interface);
941 * On some models, some WMID methods don't toggle
942 * properly. For those cases, we want to run the AMW0
943 * method afterwards to be certain we've really toggled
946 if (cap == ACER_CAP_WIRELESS ||
947 cap == ACER_CAP_BLUETOOTH) {
948 status = WMID_set_u32(value, cap, interface);
949 if (ACPI_FAILURE(status))
952 return AMW0_set_u32(value, cap, interface);
955 return WMID_set_u32(value, cap, interface);
957 return AE_BAD_PARAMETER;
960 return AE_BAD_PARAMETER;
963 static void __init acer_commandline_init(void)
966 * These will all fail silently if the value given is invalid, or the
967 * capability isn't available on the given interface
969 set_u32(mailled, ACER_CAP_MAILLED);
971 set_u32(threeg, ACER_CAP_THREEG);
972 set_u32(brightness, ACER_CAP_BRIGHTNESS);
976 * LED device (Mail LED only, no other LEDs known yet)
978 static void mail_led_set(struct led_classdev *led_cdev,
979 enum led_brightness value)
981 set_u32(value, ACER_CAP_MAILLED);
984 static struct led_classdev mail_led = {
985 .name = "acer-wmi::mail",
986 .brightness_set = mail_led_set,
989 static int __devinit acer_led_init(struct device *dev)
991 return led_classdev_register(dev, &mail_led);
994 static void acer_led_exit(void)
996 led_classdev_unregister(&mail_led);
1002 static struct backlight_device *acer_backlight_device;
1004 static int read_brightness(struct backlight_device *bd)
1007 get_u32(&value, ACER_CAP_BRIGHTNESS);
1011 static int update_bl_status(struct backlight_device *bd)
1013 int intensity = bd->props.brightness;
1015 if (bd->props.power != FB_BLANK_UNBLANK)
1017 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1020 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1025 static const struct backlight_ops acer_bl_ops = {
1026 .get_brightness = read_brightness,
1027 .update_status = update_bl_status,
1030 static int __devinit acer_backlight_init(struct device *dev)
1032 struct backlight_properties props;
1033 struct backlight_device *bd;
1035 memset(&props, 0, sizeof(struct backlight_properties));
1036 props.max_brightness = max_brightness;
1037 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1040 printk(ACER_ERR "Could not register Acer backlight device\n");
1041 acer_backlight_device = NULL;
1045 acer_backlight_device = bd;
1047 bd->props.power = FB_BLANK_UNBLANK;
1048 bd->props.brightness = read_brightness(bd);
1049 backlight_update_status(bd);
1053 static void acer_backlight_exit(void)
1055 backlight_device_unregister(acer_backlight_device);
1058 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1060 struct wmid3_gds_return_value return_value;
1062 union acpi_object *obj;
1063 struct wmid3_gds_input_param params = {
1064 .function_num = 0x1,
1065 .hotkey_number = 0x01,
1068 struct acpi_buffer input = {
1069 sizeof(struct wmid3_gds_input_param),
1072 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1074 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1075 if (ACPI_FAILURE(status))
1078 obj = output.pointer;
1082 else if (obj->type != ACPI_TYPE_BUFFER) {
1086 if (obj->buffer.length != 8) {
1087 printk(ACER_WARNING "Unknown buffer length %d\n",
1088 obj->buffer.length);
1093 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1096 if (return_value.error_code || return_value.ec_return_value)
1097 printk(ACER_WARNING "Get Device Status failed: "
1098 "0x%x - 0x%x\n", return_value.error_code,
1099 return_value.ec_return_value);
1101 *value = !!(return_value.devices & device);
1106 static acpi_status get_device_status(u32 *value, u32 cap)
1108 if (wmi_has_guid(WMID_GUID3)) {
1112 case ACER_CAP_WIRELESS:
1113 device = ACER_WMID3_GDS_WIRELESS;
1115 case ACER_CAP_BLUETOOTH:
1116 device = ACER_WMID3_GDS_BLUETOOTH;
1118 case ACER_CAP_THREEG:
1119 device = ACER_WMID3_GDS_THREEG;
1124 return wmid3_get_device_status(value, device);
1127 return get_u32(value, cap);
1134 static void acer_rfkill_update(struct work_struct *ignored);
1135 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1136 static void acer_rfkill_update(struct work_struct *ignored)
1141 status = get_u32(&state, ACER_CAP_WIRELESS);
1142 if (ACPI_SUCCESS(status))
1143 rfkill_set_sw_state(wireless_rfkill, !state);
1145 if (has_cap(ACER_CAP_BLUETOOTH)) {
1146 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1147 if (ACPI_SUCCESS(status))
1148 rfkill_set_sw_state(bluetooth_rfkill, !state);
1151 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1152 status = wmid3_get_device_status(&state,
1153 ACER_WMID3_GDS_THREEG);
1154 if (ACPI_SUCCESS(status))
1155 rfkill_set_sw_state(threeg_rfkill, !state);
1158 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1161 static int acer_rfkill_set(void *data, bool blocked)
1164 u32 cap = (unsigned long)data;
1166 if (rfkill_inited) {
1167 status = set_u32(!blocked, cap);
1168 if (ACPI_FAILURE(status))
1175 static const struct rfkill_ops acer_rfkill_ops = {
1176 .set_block = acer_rfkill_set,
1179 static struct rfkill *acer_rfkill_register(struct device *dev,
1180 enum rfkill_type type,
1181 char *name, u32 cap)
1184 struct rfkill *rfkill_dev;
1188 rfkill_dev = rfkill_alloc(name, dev, type,
1190 (void *)(unsigned long)cap);
1192 return ERR_PTR(-ENOMEM);
1194 status = get_device_status(&state, cap);
1196 err = rfkill_register(rfkill_dev);
1198 rfkill_destroy(rfkill_dev);
1199 return ERR_PTR(err);
1202 if (ACPI_SUCCESS(status))
1203 rfkill_set_sw_state(rfkill_dev, !state);
1208 static int acer_rfkill_init(struct device *dev)
1210 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1211 "acer-wireless", ACER_CAP_WIRELESS);
1212 if (IS_ERR(wireless_rfkill))
1213 return PTR_ERR(wireless_rfkill);
1215 if (has_cap(ACER_CAP_BLUETOOTH)) {
1216 bluetooth_rfkill = acer_rfkill_register(dev,
1217 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1218 ACER_CAP_BLUETOOTH);
1219 if (IS_ERR(bluetooth_rfkill)) {
1220 rfkill_unregister(wireless_rfkill);
1221 rfkill_destroy(wireless_rfkill);
1222 return PTR_ERR(bluetooth_rfkill);
1226 if (has_cap(ACER_CAP_THREEG)) {
1227 threeg_rfkill = acer_rfkill_register(dev,
1228 RFKILL_TYPE_WWAN, "acer-threeg",
1230 if (IS_ERR(threeg_rfkill)) {
1231 rfkill_unregister(wireless_rfkill);
1232 rfkill_destroy(wireless_rfkill);
1233 rfkill_unregister(bluetooth_rfkill);
1234 rfkill_destroy(bluetooth_rfkill);
1235 return PTR_ERR(threeg_rfkill);
1239 rfkill_inited = true;
1241 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1242 schedule_delayed_work(&acer_rfkill_work,
1243 round_jiffies_relative(HZ));
1248 static void acer_rfkill_exit(void)
1250 if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
1251 cancel_delayed_work_sync(&acer_rfkill_work);
1253 rfkill_unregister(wireless_rfkill);
1254 rfkill_destroy(wireless_rfkill);
1256 if (has_cap(ACER_CAP_BLUETOOTH)) {
1257 rfkill_unregister(bluetooth_rfkill);
1258 rfkill_destroy(bluetooth_rfkill);
1261 if (has_cap(ACER_CAP_THREEG)) {
1262 rfkill_unregister(threeg_rfkill);
1263 rfkill_destroy(threeg_rfkill);
1271 static ssize_t show_bool_threeg(struct device *dev,
1272 struct device_attribute *attr, char *buf)
1276 if (wmi_has_guid(WMID_GUID3))
1277 status = wmid3_get_device_status(&result,
1278 ACER_WMID3_GDS_THREEG);
1280 status = get_u32(&result, ACER_CAP_THREEG);
1281 if (ACPI_SUCCESS(status))
1282 return sprintf(buf, "%u\n", result);
1283 return sprintf(buf, "Read error\n");
1286 static ssize_t set_bool_threeg(struct device *dev,
1287 struct device_attribute *attr, const char *buf, size_t count)
1289 u32 tmp = simple_strtoul(buf, NULL, 10);
1290 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1291 if (ACPI_FAILURE(status))
1295 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1298 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1301 switch (interface->type) {
1303 return sprintf(buf, "AMW0\n");
1305 return sprintf(buf, "AMW0 v2\n");
1307 return sprintf(buf, "WMID\n");
1309 return sprintf(buf, "Error!\n");
1313 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1315 static void acer_wmi_notify(u32 value, void *context)
1317 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1318 union acpi_object *obj;
1319 struct event_return_value return_value;
1322 const struct key_entry *key;
1324 status = wmi_get_event_data(value, &response);
1325 if (status != AE_OK) {
1326 printk(ACER_WARNING "bad event status 0x%x\n", status);
1330 obj = (union acpi_object *)response.pointer;
1334 if (obj->type != ACPI_TYPE_BUFFER) {
1335 printk(ACER_WARNING "Unknown response received %d\n",
1340 if (obj->buffer.length != 8) {
1341 printk(ACER_WARNING "Unknown buffer length %d\n",
1342 obj->buffer.length);
1347 return_value = *((struct event_return_value *)obj->buffer.pointer);
1350 switch (return_value.function) {
1351 case WMID_HOTKEY_EVENT:
1352 device_state = return_value.device_state;
1353 pr_debug("device state: 0x%x\n", device_state);
1355 key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1356 return_value.key_num);
1358 printk(ACER_WARNING "Unknown key number - 0x%x\n",
1359 return_value.key_num);
1361 switch (key->keycode) {
1364 if (has_cap(ACER_CAP_WIRELESS))
1365 rfkill_set_sw_state(wireless_rfkill,
1366 !(device_state & ACER_WMID3_GDS_WIRELESS));
1367 if (has_cap(ACER_CAP_THREEG))
1368 rfkill_set_sw_state(threeg_rfkill,
1369 !(device_state & ACER_WMID3_GDS_THREEG));
1370 if (has_cap(ACER_CAP_BLUETOOTH))
1371 rfkill_set_sw_state(bluetooth_rfkill,
1372 !(device_state & ACER_WMID3_GDS_BLUETOOTH));
1375 sparse_keymap_report_entry(acer_wmi_input_dev, key,
1380 printk(ACER_WARNING "Unknown function number - %d - %d\n",
1381 return_value.function, return_value.key_num);
1387 wmid3_set_lm_mode(struct lm_input_params *params,
1388 struct lm_return_value *return_value)
1391 union acpi_object *obj;
1393 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1394 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1396 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1397 if (ACPI_FAILURE(status))
1400 obj = output.pointer;
1404 else if (obj->type != ACPI_TYPE_BUFFER) {
1408 if (obj->buffer.length != 4) {
1409 printk(ACER_WARNING "Unknown buffer length %d\n",
1410 obj->buffer.length);
1415 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1421 static int acer_wmi_enable_ec_raw(void)
1423 struct lm_return_value return_value;
1425 struct lm_input_params params = {
1426 .function_num = 0x1,
1427 .commun_devices = 0xFFFF,
1429 .lm_status = 0x00, /* Launch Manager Deactive */
1432 status = wmid3_set_lm_mode(¶ms, &return_value);
1434 if (return_value.error_code || return_value.ec_return_value)
1435 printk(ACER_WARNING "Enabling EC raw mode failed: "
1436 "0x%x - 0x%x\n", return_value.error_code,
1437 return_value.ec_return_value);
1439 printk(ACER_INFO "Enabled EC raw mode");
1444 static int acer_wmi_enable_lm(void)
1446 struct lm_return_value return_value;
1448 struct lm_input_params params = {
1449 .function_num = 0x1,
1450 .commun_devices = 0xFFFF,
1452 .lm_status = 0x01, /* Launch Manager Active */
1455 status = wmid3_set_lm_mode(¶ms, &return_value);
1457 if (return_value.error_code || return_value.ec_return_value)
1458 printk(ACER_WARNING "Enabling Launch Manager failed: "
1459 "0x%x - 0x%x\n", return_value.error_code,
1460 return_value.ec_return_value);
1465 static int __init acer_wmi_input_setup(void)
1470 acer_wmi_input_dev = input_allocate_device();
1471 if (!acer_wmi_input_dev)
1474 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1475 acer_wmi_input_dev->phys = "wmi/input0";
1476 acer_wmi_input_dev->id.bustype = BUS_HOST;
1478 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1482 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1483 acer_wmi_notify, NULL);
1484 if (ACPI_FAILURE(status)) {
1486 goto err_free_keymap;
1489 err = input_register_device(acer_wmi_input_dev);
1491 goto err_uninstall_notifier;
1495 err_uninstall_notifier:
1496 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1498 sparse_keymap_free(acer_wmi_input_dev);
1500 input_free_device(acer_wmi_input_dev);
1504 static void acer_wmi_input_destroy(void)
1506 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1507 sparse_keymap_free(acer_wmi_input_dev);
1508 input_unregister_device(acer_wmi_input_dev);
1514 static u32 get_wmid_devices(void)
1516 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1517 union acpi_object *obj;
1521 status = wmi_query_block(WMID_GUID2, 1, &out);
1522 if (ACPI_FAILURE(status))
1525 obj = (union acpi_object *) out.pointer;
1526 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1527 obj->buffer.length == sizeof(u32)) {
1528 devices = *((u32 *) obj->buffer.pointer);
1538 static int __devinit acer_platform_probe(struct platform_device *device)
1542 if (has_cap(ACER_CAP_MAILLED)) {
1543 err = acer_led_init(&device->dev);
1548 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1549 err = acer_backlight_init(&device->dev);
1551 goto error_brightness;
1554 err = acer_rfkill_init(&device->dev);
1561 if (has_cap(ACER_CAP_BRIGHTNESS))
1562 acer_backlight_exit();
1564 if (has_cap(ACER_CAP_MAILLED))
1570 static int acer_platform_remove(struct platform_device *device)
1572 if (has_cap(ACER_CAP_MAILLED))
1574 if (has_cap(ACER_CAP_BRIGHTNESS))
1575 acer_backlight_exit();
1581 static int acer_platform_suspend(struct platform_device *dev,
1585 struct acer_data *data = &interface->data;
1590 if (has_cap(ACER_CAP_MAILLED)) {
1591 get_u32(&value, ACER_CAP_MAILLED);
1592 data->mailled = value;
1595 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1596 get_u32(&value, ACER_CAP_BRIGHTNESS);
1597 data->brightness = value;
1603 static int acer_platform_resume(struct platform_device *device)
1605 struct acer_data *data = &interface->data;
1610 if (has_cap(ACER_CAP_MAILLED))
1611 set_u32(data->mailled, ACER_CAP_MAILLED);
1613 if (has_cap(ACER_CAP_BRIGHTNESS))
1614 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1619 static struct platform_driver acer_platform_driver = {
1622 .owner = THIS_MODULE,
1624 .probe = acer_platform_probe,
1625 .remove = acer_platform_remove,
1626 .suspend = acer_platform_suspend,
1627 .resume = acer_platform_resume,
1630 static struct platform_device *acer_platform_device;
1632 static int remove_sysfs(struct platform_device *device)
1634 if (has_cap(ACER_CAP_THREEG))
1635 device_remove_file(&device->dev, &dev_attr_threeg);
1637 device_remove_file(&device->dev, &dev_attr_interface);
1642 static int create_sysfs(void)
1644 int retval = -ENOMEM;
1646 if (has_cap(ACER_CAP_THREEG)) {
1647 retval = device_create_file(&acer_platform_device->dev,
1653 retval = device_create_file(&acer_platform_device->dev,
1654 &dev_attr_interface);
1661 remove_sysfs(acer_platform_device);
1665 static void remove_debugfs(void)
1667 debugfs_remove(interface->debug.devices);
1668 debugfs_remove(interface->debug.root);
1671 static int create_debugfs(void)
1673 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1674 if (!interface->debug.root) {
1675 printk(ACER_ERR "Failed to create debugfs directory");
1679 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1680 interface->debug.root,
1681 &interface->debug.wmid_devices);
1682 if (!interface->debug.devices)
1692 static int __init acer_wmi_init(void)
1696 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1698 if (dmi_check_system(acer_blacklist)) {
1699 printk(ACER_INFO "Blacklisted hardware detected - "
1707 * Detect which ACPI-WMI interface we're using.
1709 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1710 interface = &AMW0_V2_interface;
1712 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1713 interface = &wmid_interface;
1715 if (wmi_has_guid(WMID_GUID2) && interface) {
1716 if (ACPI_FAILURE(WMID_set_capabilities())) {
1717 printk(ACER_ERR "Unable to detect available WMID "
1721 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1722 printk(ACER_ERR "No WMID device detection method found\n");
1726 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1727 interface = &AMW0_interface;
1729 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1730 printk(ACER_ERR "Unable to detect available AMW0 "
1736 if (wmi_has_guid(AMW0_GUID1))
1737 AMW0_find_mailled();
1740 printk(ACER_INFO "No or unsupported WMI interface, unable to "
1747 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1748 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1749 printk(ACER_INFO "Brightness must be controlled by "
1750 "generic video driver\n");
1753 if (wmi_has_guid(WMID_GUID3)) {
1755 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1756 printk(ACER_ERR "Cannot enable EC raw mode\n");
1759 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1760 printk(ACER_ERR "Cannot enable Launch Manager mode\n");
1763 } else if (ec_raw_mode) {
1764 printk(ACER_INFO "No WMID EC raw mode enable method\n");
1767 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1768 err = acer_wmi_input_setup();
1773 err = platform_driver_register(&acer_platform_driver);
1775 printk(ACER_ERR "Unable to register platform driver.\n");
1776 goto error_platform_register;
1779 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1780 if (!acer_platform_device) {
1782 goto error_device_alloc;
1785 err = platform_device_add(acer_platform_device);
1787 goto error_device_add;
1789 err = create_sysfs();
1791 goto error_create_sys;
1793 if (wmi_has_guid(WMID_GUID2)) {
1794 interface->debug.wmid_devices = get_wmid_devices();
1795 err = create_debugfs();
1797 goto error_create_debugfs;
1800 /* Override any initial settings with values from the commandline */
1801 acer_commandline_init();
1805 error_create_debugfs:
1806 remove_sysfs(acer_platform_device);
1808 platform_device_del(acer_platform_device);
1810 platform_device_put(acer_platform_device);
1812 platform_driver_unregister(&acer_platform_driver);
1813 error_platform_register:
1814 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1815 acer_wmi_input_destroy();
1820 static void __exit acer_wmi_exit(void)
1822 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1823 acer_wmi_input_destroy();
1825 remove_sysfs(acer_platform_device);
1827 platform_device_unregister(acer_platform_device);
1828 platform_driver_unregister(&acer_platform_driver);
1830 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1834 module_init(acer_wmi_init);
1835 module_exit(acer_wmi_exit);