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;
226 /* Each low-level interface must define at least some of the following */
227 struct wmi_interface {
228 /* The WMI device type */
231 /* The capabilities this interface provides */
234 /* Private data for the current interface */
235 struct acer_data data;
237 /* debugfs entries associated with this interface */
238 struct acer_debug debug;
241 /* The static interface pointer, points to the currently detected interface */
242 static struct wmi_interface *interface;
245 * Embedded Controller quirks
246 * Some laptops require us to directly access the EC to either enable or query
247 * features that are not available through WMI.
257 static struct quirk_entry *quirks;
259 static void set_quirks(void)
265 interface->capability |= ACER_CAP_MAILLED;
267 if (quirks->brightness)
268 interface->capability |= ACER_CAP_BRIGHTNESS;
271 static int dmi_matched(const struct dmi_system_id *dmi)
273 quirks = dmi->driver_data;
277 static struct quirk_entry quirk_unknown = {
280 static struct quirk_entry quirk_acer_aspire_1520 = {
284 static struct quirk_entry quirk_acer_travelmate_2490 = {
288 /* This AMW0 laptop has no bluetooth */
289 static struct quirk_entry quirk_medion_md_98300 = {
293 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
297 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
298 static struct dmi_system_id __devinitdata acer_blacklist[] = {
300 .ident = "Acer Aspire One (SSD)",
302 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
303 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
307 .ident = "Acer Aspire One (HDD)",
309 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
310 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
316 static struct dmi_system_id acer_quirks[] = {
318 .callback = dmi_matched,
319 .ident = "Acer Aspire 1360",
321 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
322 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
324 .driver_data = &quirk_acer_aspire_1520,
327 .callback = dmi_matched,
328 .ident = "Acer Aspire 1520",
330 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
331 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
333 .driver_data = &quirk_acer_aspire_1520,
336 .callback = dmi_matched,
337 .ident = "Acer Aspire 3100",
339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
340 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
342 .driver_data = &quirk_acer_travelmate_2490,
345 .callback = dmi_matched,
346 .ident = "Acer Aspire 3610",
348 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
349 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
351 .driver_data = &quirk_acer_travelmate_2490,
354 .callback = dmi_matched,
355 .ident = "Acer Aspire 5100",
357 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
358 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
360 .driver_data = &quirk_acer_travelmate_2490,
363 .callback = dmi_matched,
364 .ident = "Acer Aspire 5610",
366 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
367 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
369 .driver_data = &quirk_acer_travelmate_2490,
372 .callback = dmi_matched,
373 .ident = "Acer Aspire 5630",
375 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
376 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
378 .driver_data = &quirk_acer_travelmate_2490,
381 .callback = dmi_matched,
382 .ident = "Acer Aspire 5650",
384 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
385 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
387 .driver_data = &quirk_acer_travelmate_2490,
390 .callback = dmi_matched,
391 .ident = "Acer Aspire 5680",
393 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
394 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
396 .driver_data = &quirk_acer_travelmate_2490,
399 .callback = dmi_matched,
400 .ident = "Acer Aspire 9110",
402 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
403 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
405 .driver_data = &quirk_acer_travelmate_2490,
408 .callback = dmi_matched,
409 .ident = "Acer TravelMate 2490",
411 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
412 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
414 .driver_data = &quirk_acer_travelmate_2490,
417 .callback = dmi_matched,
418 .ident = "Acer TravelMate 4200",
420 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
421 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
423 .driver_data = &quirk_acer_travelmate_2490,
426 .callback = dmi_matched,
427 .ident = "Fujitsu Siemens Amilo Li 1718",
429 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
430 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
432 .driver_data = &quirk_fujitsu_amilo_li_1718,
435 .callback = dmi_matched,
436 .ident = "Medion MD 98300",
438 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
439 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
441 .driver_data = &quirk_medion_md_98300,
446 /* Find which quirks are needed for a particular vendor/ model pair */
447 static void find_quirks(void)
450 dmi_check_system(acer_quirks);
451 } else if (force_series == 2490) {
452 quirks = &quirk_acer_travelmate_2490;
456 quirks = &quirk_unknown;
462 * General interface convenience methods
465 static bool has_cap(u32 cap)
467 if ((interface->capability & cap) != 0)
474 * AMW0 (V1) interface
491 static acpi_status wmab_execute(struct wmab_args *regbuf,
492 struct acpi_buffer *result)
494 struct acpi_buffer input;
496 input.length = sizeof(struct wmab_args);
497 input.pointer = (u8 *)regbuf;
499 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
504 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
505 struct wmi_interface *iface)
511 case ACER_CAP_MAILLED:
512 switch (quirks->mailled) {
514 err = ec_read(0xA, &result);
517 *value = (result >> 7) & 0x1;
521 case ACER_CAP_WIRELESS:
522 switch (quirks->wireless) {
524 err = ec_read(0x7B, &result);
527 *value = result & 0x1;
530 err = ec_read(0x71, &result);
533 *value = result & 0x1;
536 err = ec_read(0xA, &result);
539 *value = (result >> 2) & 0x1;
543 case ACER_CAP_BLUETOOTH:
544 switch (quirks->bluetooth) {
546 err = ec_read(0xA, &result);
549 *value = (result >> 4) & 0x1;
553 case ACER_CAP_BRIGHTNESS:
554 switch (quirks->brightness) {
556 err = ec_read(0x83, &result);
569 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
571 struct wmab_args args;
573 args.eax = ACER_AMW0_WRITE;
574 args.ebx = value ? (1<<8) : 0;
575 args.ecx = args.edx = 0;
578 case ACER_CAP_MAILLED:
580 return AE_BAD_PARAMETER;
581 args.ebx |= ACER_AMW0_MAILLED_MASK;
583 case ACER_CAP_WIRELESS:
585 return AE_BAD_PARAMETER;
586 args.ebx |= ACER_AMW0_WIRELESS_MASK;
588 case ACER_CAP_BLUETOOTH:
590 return AE_BAD_PARAMETER;
591 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
593 case ACER_CAP_BRIGHTNESS:
594 if (value > max_brightness)
595 return AE_BAD_PARAMETER;
596 switch (quirks->brightness) {
598 return ec_write(0x83, value);
605 /* Actually do the set */
606 return wmab_execute(&args, NULL);
609 static acpi_status AMW0_find_mailled(void)
611 struct wmab_args args;
613 acpi_status status = AE_OK;
614 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
615 union acpi_object *obj;
618 args.ebx = args.ecx = args.edx = 0;
620 status = wmab_execute(&args, &out);
621 if (ACPI_FAILURE(status))
624 obj = (union acpi_object *) out.pointer;
625 if (obj && obj->type == ACPI_TYPE_BUFFER &&
626 obj->buffer.length == sizeof(struct wmab_ret)) {
627 ret = *((struct wmab_ret *) obj->buffer.pointer);
634 interface->capability |= ACER_CAP_MAILLED;
641 static acpi_status AMW0_set_capabilities(void)
643 struct wmab_args args;
646 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
647 union acpi_object *obj;
650 * On laptops with this strange GUID (non Acer), normal probing doesn't
653 if (wmi_has_guid(AMW0_GUID2)) {
654 interface->capability |= ACER_CAP_WIRELESS;
658 args.eax = ACER_AMW0_WRITE;
659 args.ecx = args.edx = 0;
661 args.ebx = 0xa2 << 8;
662 args.ebx |= ACER_AMW0_WIRELESS_MASK;
664 status = wmab_execute(&args, &out);
665 if (ACPI_FAILURE(status))
669 if (obj && obj->type == ACPI_TYPE_BUFFER &&
670 obj->buffer.length == sizeof(struct wmab_ret)) {
671 ret = *((struct wmab_ret *) obj->buffer.pointer);
678 interface->capability |= ACER_CAP_WIRELESS;
681 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
684 * It's ok to use existing buffer for next wmab_execute call.
685 * But we need to kfree(out.pointer) if next wmab_execute fail.
687 status = wmab_execute(&args, &out);
688 if (ACPI_FAILURE(status))
691 obj = (union acpi_object *) out.pointer;
692 if (obj && obj->type == ACPI_TYPE_BUFFER
693 && obj->buffer.length == sizeof(struct wmab_ret)) {
694 ret = *((struct wmab_ret *) obj->buffer.pointer);
701 interface->capability |= ACER_CAP_BLUETOOTH;
704 * This appears to be safe to enable, since all Wistron based laptops
705 * appear to use the same EC register for brightness, even if they
706 * differ for wireless, etc
708 if (quirks->brightness >= 0)
709 interface->capability |= ACER_CAP_BRIGHTNESS;
717 static struct wmi_interface AMW0_interface = {
721 static struct wmi_interface AMW0_V2_interface = {
722 .type = ACER_AMW0_V2,
726 * New interface (The WMID interface)
729 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
731 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
732 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
733 union acpi_object *obj;
737 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
739 if (ACPI_FAILURE(status))
742 obj = (union acpi_object *) result.pointer;
743 if (obj && obj->type == ACPI_TYPE_BUFFER &&
744 obj->buffer.length == sizeof(u32)) {
745 tmp = *((u32 *) obj->buffer.pointer);
753 kfree(result.pointer);
758 static acpi_status WMID_get_u32(u32 *value, u32 cap,
759 struct wmi_interface *iface)
763 u32 result, method_id = 0;
766 case ACER_CAP_WIRELESS:
767 method_id = ACER_WMID_GET_WIRELESS_METHODID;
769 case ACER_CAP_BLUETOOTH:
770 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
772 case ACER_CAP_BRIGHTNESS:
773 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
775 case ACER_CAP_THREEG:
776 method_id = ACER_WMID_GET_THREEG_METHODID;
778 case ACER_CAP_MAILLED:
779 if (quirks->mailled == 1) {
787 status = WMI_execute_u32(method_id, 0, &result);
789 if (ACPI_SUCCESS(status))
795 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
801 case ACER_CAP_BRIGHTNESS:
802 if (value > max_brightness)
803 return AE_BAD_PARAMETER;
804 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
806 case ACER_CAP_WIRELESS:
808 return AE_BAD_PARAMETER;
809 method_id = ACER_WMID_SET_WIRELESS_METHODID;
811 case ACER_CAP_BLUETOOTH:
813 return AE_BAD_PARAMETER;
814 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
816 case ACER_CAP_THREEG:
818 return AE_BAD_PARAMETER;
819 method_id = ACER_WMID_SET_THREEG_METHODID;
821 case ACER_CAP_MAILLED:
823 return AE_BAD_PARAMETER;
824 if (quirks->mailled == 1) {
825 param = value ? 0x92 : 0x93;
827 i8042_command(¶m, 0x1059);
835 return WMI_execute_u32(method_id, (u32)value, NULL);
838 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
840 struct hotkey_function_type_aa *type_aa;
842 /* We are looking for OEM-specific Type AAh */
843 if (header->type != 0xAA)
847 type_aa = (struct hotkey_function_type_aa *) header;
849 printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n",
850 type_aa->commun_func_bitmap);
852 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
853 interface->capability |= ACER_CAP_WIRELESS;
854 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
855 interface->capability |= ACER_CAP_THREEG;
856 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
857 interface->capability |= ACER_CAP_BLUETOOTH;
860 static acpi_status WMID_set_capabilities(void)
862 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
863 union acpi_object *obj;
867 status = wmi_query_block(WMID_GUID2, 1, &out);
868 if (ACPI_FAILURE(status))
871 obj = (union acpi_object *) out.pointer;
872 if (obj && obj->type == ACPI_TYPE_BUFFER &&
873 obj->buffer.length == sizeof(u32)) {
874 devices = *((u32 *) obj->buffer.pointer);
880 dmi_walk(type_aa_dmi_decode, NULL);
882 interface->capability |= ACER_CAP_WIRELESS;
883 interface->capability |= ACER_CAP_THREEG;
885 interface->capability |= ACER_CAP_BLUETOOTH;
888 /* WMID always provides brightness methods */
889 interface->capability |= ACER_CAP_BRIGHTNESS;
891 if (!(devices & 0x20))
892 max_brightness = 0x9;
898 static struct wmi_interface wmid_interface = {
903 * Generic Device (interface-independent)
906 static acpi_status get_u32(u32 *value, u32 cap)
908 acpi_status status = AE_ERROR;
910 switch (interface->type) {
912 status = AMW0_get_u32(value, cap, interface);
915 if (cap == ACER_CAP_MAILLED) {
916 status = AMW0_get_u32(value, cap, interface);
920 status = WMID_get_u32(value, cap, interface);
927 static acpi_status set_u32(u32 value, u32 cap)
931 if (interface->capability & cap) {
932 switch (interface->type) {
934 return AMW0_set_u32(value, cap, interface);
936 if (cap == ACER_CAP_MAILLED)
937 return AMW0_set_u32(value, cap, interface);
940 * On some models, some WMID methods don't toggle
941 * properly. For those cases, we want to run the AMW0
942 * method afterwards to be certain we've really toggled
945 if (cap == ACER_CAP_WIRELESS ||
946 cap == ACER_CAP_BLUETOOTH) {
947 status = WMID_set_u32(value, cap, interface);
948 if (ACPI_FAILURE(status))
951 return AMW0_set_u32(value, cap, interface);
954 return WMID_set_u32(value, cap, interface);
956 return AE_BAD_PARAMETER;
959 return AE_BAD_PARAMETER;
962 static void __init acer_commandline_init(void)
965 * These will all fail silently if the value given is invalid, or the
966 * capability isn't available on the given interface
968 set_u32(mailled, ACER_CAP_MAILLED);
970 set_u32(threeg, ACER_CAP_THREEG);
971 set_u32(brightness, ACER_CAP_BRIGHTNESS);
975 * LED device (Mail LED only, no other LEDs known yet)
977 static void mail_led_set(struct led_classdev *led_cdev,
978 enum led_brightness value)
980 set_u32(value, ACER_CAP_MAILLED);
983 static struct led_classdev mail_led = {
984 .name = "acer-wmi::mail",
985 .brightness_set = mail_led_set,
988 static int __devinit acer_led_init(struct device *dev)
990 return led_classdev_register(dev, &mail_led);
993 static void acer_led_exit(void)
995 led_classdev_unregister(&mail_led);
1001 static struct backlight_device *acer_backlight_device;
1003 static int read_brightness(struct backlight_device *bd)
1006 get_u32(&value, ACER_CAP_BRIGHTNESS);
1010 static int update_bl_status(struct backlight_device *bd)
1012 int intensity = bd->props.brightness;
1014 if (bd->props.power != FB_BLANK_UNBLANK)
1016 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1019 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1024 static const struct backlight_ops acer_bl_ops = {
1025 .get_brightness = read_brightness,
1026 .update_status = update_bl_status,
1029 static int __devinit acer_backlight_init(struct device *dev)
1031 struct backlight_properties props;
1032 struct backlight_device *bd;
1034 memset(&props, 0, sizeof(struct backlight_properties));
1035 props.max_brightness = max_brightness;
1036 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1039 printk(ACER_ERR "Could not register Acer backlight device\n");
1040 acer_backlight_device = NULL;
1044 acer_backlight_device = bd;
1046 bd->props.power = FB_BLANK_UNBLANK;
1047 bd->props.brightness = read_brightness(bd);
1048 backlight_update_status(bd);
1052 static void acer_backlight_exit(void)
1054 backlight_device_unregister(acer_backlight_device);
1057 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1059 struct wmid3_gds_return_value return_value;
1061 union acpi_object *obj;
1062 struct wmid3_gds_input_param params = {
1063 .function_num = 0x1,
1064 .hotkey_number = 0x01,
1067 struct acpi_buffer input = {
1068 sizeof(struct wmid3_gds_input_param),
1071 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1073 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1074 if (ACPI_FAILURE(status))
1077 obj = output.pointer;
1081 else if (obj->type != ACPI_TYPE_BUFFER) {
1085 if (obj->buffer.length != 8) {
1086 printk(ACER_WARNING "Unknown buffer length %d\n",
1087 obj->buffer.length);
1092 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1095 if (return_value.error_code || return_value.ec_return_value)
1096 printk(ACER_WARNING "Get Device Status failed: "
1097 "0x%x - 0x%x\n", return_value.error_code,
1098 return_value.ec_return_value);
1100 *value = !!(return_value.devices & device);
1105 static acpi_status get_device_status(u32 *value, u32 cap)
1107 if (wmi_has_guid(WMID_GUID3)) {
1111 case ACER_CAP_WIRELESS:
1112 device = ACER_WMID3_GDS_WIRELESS;
1114 case ACER_CAP_BLUETOOTH:
1115 device = ACER_WMID3_GDS_BLUETOOTH;
1117 case ACER_CAP_THREEG:
1118 device = ACER_WMID3_GDS_THREEG;
1123 return wmid3_get_device_status(value, device);
1126 return get_u32(value, cap);
1133 static void acer_rfkill_update(struct work_struct *ignored);
1134 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1135 static void acer_rfkill_update(struct work_struct *ignored)
1140 status = get_u32(&state, ACER_CAP_WIRELESS);
1141 if (ACPI_SUCCESS(status))
1142 rfkill_set_sw_state(wireless_rfkill, !state);
1144 if (has_cap(ACER_CAP_BLUETOOTH)) {
1145 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1146 if (ACPI_SUCCESS(status))
1147 rfkill_set_sw_state(bluetooth_rfkill, !state);
1150 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1151 status = wmid3_get_device_status(&state,
1152 ACER_WMID3_GDS_THREEG);
1153 if (ACPI_SUCCESS(status))
1154 rfkill_set_sw_state(threeg_rfkill, !state);
1157 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1160 static int acer_rfkill_set(void *data, bool blocked)
1163 u32 cap = (unsigned long)data;
1164 status = set_u32(!blocked, cap);
1165 if (ACPI_FAILURE(status))
1170 static const struct rfkill_ops acer_rfkill_ops = {
1171 .set_block = acer_rfkill_set,
1174 static struct rfkill *acer_rfkill_register(struct device *dev,
1175 enum rfkill_type type,
1176 char *name, u32 cap)
1179 struct rfkill *rfkill_dev;
1183 rfkill_dev = rfkill_alloc(name, dev, type,
1185 (void *)(unsigned long)cap);
1187 return ERR_PTR(-ENOMEM);
1189 status = get_device_status(&state, cap);
1190 if (ACPI_SUCCESS(status))
1191 rfkill_init_sw_state(rfkill_dev, !state);
1193 err = rfkill_register(rfkill_dev);
1195 rfkill_destroy(rfkill_dev);
1196 return ERR_PTR(err);
1201 static int acer_rfkill_init(struct device *dev)
1203 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1204 "acer-wireless", ACER_CAP_WIRELESS);
1205 if (IS_ERR(wireless_rfkill))
1206 return PTR_ERR(wireless_rfkill);
1208 if (has_cap(ACER_CAP_BLUETOOTH)) {
1209 bluetooth_rfkill = acer_rfkill_register(dev,
1210 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1211 ACER_CAP_BLUETOOTH);
1212 if (IS_ERR(bluetooth_rfkill)) {
1213 rfkill_unregister(wireless_rfkill);
1214 rfkill_destroy(wireless_rfkill);
1215 return PTR_ERR(bluetooth_rfkill);
1219 if (has_cap(ACER_CAP_THREEG)) {
1220 threeg_rfkill = acer_rfkill_register(dev,
1221 RFKILL_TYPE_WWAN, "acer-threeg",
1223 if (IS_ERR(threeg_rfkill)) {
1224 rfkill_unregister(wireless_rfkill);
1225 rfkill_destroy(wireless_rfkill);
1226 rfkill_unregister(bluetooth_rfkill);
1227 rfkill_destroy(bluetooth_rfkill);
1228 return PTR_ERR(threeg_rfkill);
1232 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1237 static void acer_rfkill_exit(void)
1239 cancel_delayed_work_sync(&acer_rfkill_work);
1241 rfkill_unregister(wireless_rfkill);
1242 rfkill_destroy(wireless_rfkill);
1244 if (has_cap(ACER_CAP_BLUETOOTH)) {
1245 rfkill_unregister(bluetooth_rfkill);
1246 rfkill_destroy(bluetooth_rfkill);
1249 if (has_cap(ACER_CAP_THREEG)) {
1250 rfkill_unregister(threeg_rfkill);
1251 rfkill_destroy(threeg_rfkill);
1259 static ssize_t show_bool_threeg(struct device *dev,
1260 struct device_attribute *attr, char *buf)
1264 if (wmi_has_guid(WMID_GUID3))
1265 status = wmid3_get_device_status(&result,
1266 ACER_WMID3_GDS_THREEG);
1268 status = get_u32(&result, ACER_CAP_THREEG);
1269 if (ACPI_SUCCESS(status))
1270 return sprintf(buf, "%u\n", result);
1271 return sprintf(buf, "Read error\n");
1274 static ssize_t set_bool_threeg(struct device *dev,
1275 struct device_attribute *attr, const char *buf, size_t count)
1277 u32 tmp = simple_strtoul(buf, NULL, 10);
1278 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1279 if (ACPI_FAILURE(status))
1283 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1286 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1289 switch (interface->type) {
1291 return sprintf(buf, "AMW0\n");
1293 return sprintf(buf, "AMW0 v2\n");
1295 return sprintf(buf, "WMID\n");
1297 return sprintf(buf, "Error!\n");
1301 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1303 static void acer_wmi_notify(u32 value, void *context)
1305 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1306 union acpi_object *obj;
1307 struct event_return_value return_value;
1310 status = wmi_get_event_data(value, &response);
1311 if (status != AE_OK) {
1312 printk(ACER_WARNING "bad event status 0x%x\n", status);
1316 obj = (union acpi_object *)response.pointer;
1320 if (obj->type != ACPI_TYPE_BUFFER) {
1321 printk(ACER_WARNING "Unknown response received %d\n",
1326 if (obj->buffer.length != 8) {
1327 printk(ACER_WARNING "Unknown buffer length %d\n",
1328 obj->buffer.length);
1333 return_value = *((struct event_return_value *)obj->buffer.pointer);
1336 switch (return_value.function) {
1337 case WMID_HOTKEY_EVENT:
1338 if (!sparse_keymap_report_event(acer_wmi_input_dev,
1339 return_value.key_num, 1, true))
1340 printk(ACER_WARNING "Unknown key number - 0x%x\n",
1341 return_value.key_num);
1344 printk(ACER_WARNING "Unknown function number - %d - %d\n",
1345 return_value.function, return_value.key_num);
1351 wmid3_set_lm_mode(struct lm_input_params *params,
1352 struct lm_return_value *return_value)
1355 union acpi_object *obj;
1357 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1358 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1360 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1361 if (ACPI_FAILURE(status))
1364 obj = output.pointer;
1368 else if (obj->type != ACPI_TYPE_BUFFER) {
1372 if (obj->buffer.length != 4) {
1373 printk(ACER_WARNING "Unknown buffer length %d\n",
1374 obj->buffer.length);
1379 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1385 static int acer_wmi_enable_ec_raw(void)
1387 struct lm_return_value return_value;
1389 struct lm_input_params params = {
1390 .function_num = 0x1,
1391 .commun_devices = 0xFFFF,
1393 .lm_status = 0x00, /* Launch Manager Deactive */
1396 status = wmid3_set_lm_mode(¶ms, &return_value);
1398 if (return_value.error_code || return_value.ec_return_value)
1399 printk(ACER_WARNING "Enabling EC raw mode failed: "
1400 "0x%x - 0x%x\n", return_value.error_code,
1401 return_value.ec_return_value);
1403 printk(ACER_INFO "Enabled EC raw mode");
1408 static int acer_wmi_enable_lm(void)
1410 struct lm_return_value return_value;
1412 struct lm_input_params params = {
1413 .function_num = 0x1,
1414 .commun_devices = 0xFFFF,
1416 .lm_status = 0x01, /* Launch Manager Active */
1419 status = wmid3_set_lm_mode(¶ms, &return_value);
1421 if (return_value.error_code || return_value.ec_return_value)
1422 printk(ACER_WARNING "Enabling Launch Manager failed: "
1423 "0x%x - 0x%x\n", return_value.error_code,
1424 return_value.ec_return_value);
1429 static int __init acer_wmi_input_setup(void)
1434 acer_wmi_input_dev = input_allocate_device();
1435 if (!acer_wmi_input_dev)
1438 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1439 acer_wmi_input_dev->phys = "wmi/input0";
1440 acer_wmi_input_dev->id.bustype = BUS_HOST;
1442 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1446 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1447 acer_wmi_notify, NULL);
1448 if (ACPI_FAILURE(status)) {
1450 goto err_free_keymap;
1453 err = input_register_device(acer_wmi_input_dev);
1455 goto err_uninstall_notifier;
1459 err_uninstall_notifier:
1460 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1462 sparse_keymap_free(acer_wmi_input_dev);
1464 input_free_device(acer_wmi_input_dev);
1468 static void acer_wmi_input_destroy(void)
1470 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1471 sparse_keymap_free(acer_wmi_input_dev);
1472 input_unregister_device(acer_wmi_input_dev);
1478 static u32 get_wmid_devices(void)
1480 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1481 union acpi_object *obj;
1485 status = wmi_query_block(WMID_GUID2, 1, &out);
1486 if (ACPI_FAILURE(status))
1489 obj = (union acpi_object *) out.pointer;
1490 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1491 obj->buffer.length == sizeof(u32)) {
1492 devices = *((u32 *) obj->buffer.pointer);
1502 static int __devinit acer_platform_probe(struct platform_device *device)
1506 if (has_cap(ACER_CAP_MAILLED)) {
1507 err = acer_led_init(&device->dev);
1512 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1513 err = acer_backlight_init(&device->dev);
1515 goto error_brightness;
1518 err = acer_rfkill_init(&device->dev);
1525 if (has_cap(ACER_CAP_BRIGHTNESS))
1526 acer_backlight_exit();
1528 if (has_cap(ACER_CAP_MAILLED))
1534 static int acer_platform_remove(struct platform_device *device)
1536 if (has_cap(ACER_CAP_MAILLED))
1538 if (has_cap(ACER_CAP_BRIGHTNESS))
1539 acer_backlight_exit();
1545 static int acer_platform_suspend(struct platform_device *dev,
1549 struct acer_data *data = &interface->data;
1554 if (has_cap(ACER_CAP_MAILLED)) {
1555 get_u32(&value, ACER_CAP_MAILLED);
1556 data->mailled = value;
1559 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1560 get_u32(&value, ACER_CAP_BRIGHTNESS);
1561 data->brightness = value;
1567 static int acer_platform_resume(struct platform_device *device)
1569 struct acer_data *data = &interface->data;
1574 if (has_cap(ACER_CAP_MAILLED))
1575 set_u32(data->mailled, ACER_CAP_MAILLED);
1577 if (has_cap(ACER_CAP_BRIGHTNESS))
1578 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1583 static struct platform_driver acer_platform_driver = {
1586 .owner = THIS_MODULE,
1588 .probe = acer_platform_probe,
1589 .remove = acer_platform_remove,
1590 .suspend = acer_platform_suspend,
1591 .resume = acer_platform_resume,
1594 static struct platform_device *acer_platform_device;
1596 static int remove_sysfs(struct platform_device *device)
1598 if (has_cap(ACER_CAP_THREEG))
1599 device_remove_file(&device->dev, &dev_attr_threeg);
1601 device_remove_file(&device->dev, &dev_attr_interface);
1606 static int create_sysfs(void)
1608 int retval = -ENOMEM;
1610 if (has_cap(ACER_CAP_THREEG)) {
1611 retval = device_create_file(&acer_platform_device->dev,
1617 retval = device_create_file(&acer_platform_device->dev,
1618 &dev_attr_interface);
1625 remove_sysfs(acer_platform_device);
1629 static void remove_debugfs(void)
1631 debugfs_remove(interface->debug.devices);
1632 debugfs_remove(interface->debug.root);
1635 static int create_debugfs(void)
1637 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1638 if (!interface->debug.root) {
1639 printk(ACER_ERR "Failed to create debugfs directory");
1643 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1644 interface->debug.root,
1645 &interface->debug.wmid_devices);
1646 if (!interface->debug.devices)
1656 static int __init acer_wmi_init(void)
1660 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1662 if (dmi_check_system(acer_blacklist)) {
1663 printk(ACER_INFO "Blacklisted hardware detected - "
1671 * Detect which ACPI-WMI interface we're using.
1673 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1674 interface = &AMW0_V2_interface;
1676 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1677 interface = &wmid_interface;
1679 if (wmi_has_guid(WMID_GUID2) && interface) {
1680 if (ACPI_FAILURE(WMID_set_capabilities())) {
1681 printk(ACER_ERR "Unable to detect available WMID "
1685 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1686 printk(ACER_ERR "No WMID device detection method found\n");
1690 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1691 interface = &AMW0_interface;
1693 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1694 printk(ACER_ERR "Unable to detect available AMW0 "
1700 if (wmi_has_guid(AMW0_GUID1))
1701 AMW0_find_mailled();
1704 printk(ACER_INFO "No or unsupported WMI interface, unable to "
1711 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1712 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1713 printk(ACER_INFO "Brightness must be controlled by "
1714 "generic video driver\n");
1717 if (wmi_has_guid(WMID_GUID3)) {
1719 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1720 printk(ACER_ERR "Cannot enable EC raw mode\n");
1723 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1724 printk(ACER_ERR "Cannot enable Launch Manager mode\n");
1727 } else if (ec_raw_mode) {
1728 printk(ACER_INFO "No WMID EC raw mode enable method\n");
1731 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1732 err = acer_wmi_input_setup();
1737 err = platform_driver_register(&acer_platform_driver);
1739 printk(ACER_ERR "Unable to register platform driver.\n");
1740 goto error_platform_register;
1743 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1744 if (!acer_platform_device) {
1746 goto error_device_alloc;
1749 err = platform_device_add(acer_platform_device);
1751 goto error_device_add;
1753 err = create_sysfs();
1755 goto error_create_sys;
1757 if (wmi_has_guid(WMID_GUID2)) {
1758 interface->debug.wmid_devices = get_wmid_devices();
1759 err = create_debugfs();
1761 goto error_create_debugfs;
1764 /* Override any initial settings with values from the commandline */
1765 acer_commandline_init();
1769 error_create_debugfs:
1770 remove_sysfs(acer_platform_device);
1772 platform_device_del(acer_platform_device);
1774 platform_device_put(acer_platform_device);
1776 platform_driver_unregister(&acer_platform_driver);
1777 error_platform_register:
1778 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1779 acer_wmi_input_destroy();
1784 static void __exit acer_wmi_exit(void)
1786 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1787 acer_wmi_input_destroy();
1789 remove_sysfs(acer_platform_device);
1791 platform_device_unregister(acer_platform_device);
1792 platform_driver_unregister(&acer_platform_driver);
1794 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1798 module_init(acer_wmi_init);
1799 module_exit(acer_wmi_exit);