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>
43 #include <acpi/acpi_drivers.h>
45 MODULE_AUTHOR("Carlos Corbacho");
46 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
47 MODULE_LICENSE("GPL");
49 #define ACER_LOGPREFIX "acer-wmi: "
50 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
51 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
52 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
53 #define ACER_WARNING KERN_WARNING ACER_LOGPREFIX
57 * Meaning is unknown - this number is required for writing to ACPI for AMW0
58 * (it's also used in acerhk when directly accessing the BIOS)
60 #define ACER_AMW0_WRITE 0x9610
63 * Bit masks for the AMW0 interface
65 #define ACER_AMW0_WIRELESS_MASK 0x35
66 #define ACER_AMW0_BLUETOOTH_MASK 0x34
67 #define ACER_AMW0_MAILLED_MASK 0x31
70 * Method IDs for WMID interface
72 #define ACER_WMID_GET_WIRELESS_METHODID 1
73 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
74 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
75 #define ACER_WMID_SET_WIRELESS_METHODID 4
76 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
77 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
78 #define ACER_WMID_GET_THREEG_METHODID 10
79 #define ACER_WMID_SET_THREEG_METHODID 11
82 * Acer ACPI method GUIDs
84 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
85 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
86 #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
87 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
88 #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
91 * Acer ACPI event GUIDs
93 #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
95 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
96 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
97 MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
99 enum acer_wmi_event_ids {
100 WMID_HOTKEY_EVENT = 0x1,
103 static const struct key_entry acer_wmi_keymap[] = {
104 {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */
105 {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */
106 {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */
107 {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */
108 {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */
109 {KE_KEY, 0x24, {KEY_PROG4} }, /* Social networking_Key */
110 {KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} }, /* Display Switch */
111 {KE_KEY, 0x82, {KEY_F22} }, /* Touch Pad On/Off */
115 static struct input_dev *acer_wmi_input_dev;
117 struct event_return_value {
122 } __attribute__((packed));
125 * GUID3 Get Device Status device flags
127 #define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
128 #define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
129 #define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
131 struct lm_input_params {
132 u8 function_num; /* Function Number */
133 u16 commun_devices; /* Communication type devices default status */
134 u16 devices; /* Other type devices default status */
135 u8 lm_status; /* Launch Manager Status */
137 } __attribute__((packed));
139 struct lm_return_value {
140 u8 error_code; /* Error Code */
141 u8 ec_return_value; /* EC Return Value */
143 } __attribute__((packed));
145 struct wmid3_gds_input_param { /* Get Device Status input parameter */
146 u8 function_num; /* Function Number */
147 u8 hotkey_number; /* Hotkey Number */
148 u16 devices; /* Get Device */
149 } __attribute__((packed));
151 struct wmid3_gds_return_value { /* Get Device Status return value*/
152 u8 error_code; /* Error Code */
153 u8 ec_return_value; /* EC Return Value */
154 u16 devices; /* Current Device Status */
156 } __attribute__((packed));
158 struct hotkey_function_type_aa {
162 u16 commun_func_bitmap;
163 } __attribute__((packed));
166 * Interface capability flags
168 #define ACER_CAP_MAILLED (1<<0)
169 #define ACER_CAP_WIRELESS (1<<1)
170 #define ACER_CAP_BLUETOOTH (1<<2)
171 #define ACER_CAP_BRIGHTNESS (1<<3)
172 #define ACER_CAP_THREEG (1<<4)
173 #define ACER_CAP_ANY (0xFFFFFFFF)
176 * Interface type flags
178 enum interface_flags {
184 #define ACER_DEFAULT_WIRELESS 0
185 #define ACER_DEFAULT_BLUETOOTH 0
186 #define ACER_DEFAULT_MAILLED 0
187 #define ACER_DEFAULT_THREEG 0
189 static int max_brightness = 0xF;
191 static int mailled = -1;
192 static int brightness = -1;
193 static int threeg = -1;
194 static int force_series;
195 static bool ec_raw_mode;
196 static bool has_type_aa;
198 module_param(mailled, int, 0444);
199 module_param(brightness, int, 0444);
200 module_param(threeg, int, 0444);
201 module_param(force_series, int, 0444);
202 module_param(ec_raw_mode, bool, 0444);
203 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
204 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
205 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
206 MODULE_PARM_DESC(force_series, "Force a different laptop series");
207 MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
217 struct dentry *devices;
221 static struct rfkill *wireless_rfkill;
222 static struct rfkill *bluetooth_rfkill;
223 static struct rfkill *threeg_rfkill;
225 /* Each low-level interface must define at least some of the following */
226 struct wmi_interface {
227 /* The WMI device type */
230 /* The capabilities this interface provides */
233 /* Private data for the current interface */
234 struct acer_data data;
236 /* debugfs entries associated with this interface */
237 struct acer_debug debug;
240 /* The static interface pointer, points to the currently detected interface */
241 static struct wmi_interface *interface;
244 * Embedded Controller quirks
245 * Some laptops require us to directly access the EC to either enable or query
246 * features that are not available through WMI.
256 static struct quirk_entry *quirks;
258 static void set_quirks(void)
264 interface->capability |= ACER_CAP_MAILLED;
266 if (quirks->brightness)
267 interface->capability |= ACER_CAP_BRIGHTNESS;
270 static int dmi_matched(const struct dmi_system_id *dmi)
272 quirks = dmi->driver_data;
276 static struct quirk_entry quirk_unknown = {
279 static struct quirk_entry quirk_acer_aspire_1520 = {
283 static struct quirk_entry quirk_acer_travelmate_2490 = {
287 /* This AMW0 laptop has no bluetooth */
288 static struct quirk_entry quirk_medion_md_98300 = {
292 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
296 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
297 static struct dmi_system_id __devinitdata acer_blacklist[] = {
299 .ident = "Acer Aspire One (SSD)",
301 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
302 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
306 .ident = "Acer Aspire One (HDD)",
308 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
309 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
315 static struct dmi_system_id acer_quirks[] = {
317 .callback = dmi_matched,
318 .ident = "Acer Aspire 1360",
320 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
321 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
323 .driver_data = &quirk_acer_aspire_1520,
326 .callback = dmi_matched,
327 .ident = "Acer Aspire 1520",
329 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
330 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
332 .driver_data = &quirk_acer_aspire_1520,
335 .callback = dmi_matched,
336 .ident = "Acer Aspire 3100",
338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
339 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
341 .driver_data = &quirk_acer_travelmate_2490,
344 .callback = dmi_matched,
345 .ident = "Acer Aspire 3610",
347 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
348 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
350 .driver_data = &quirk_acer_travelmate_2490,
353 .callback = dmi_matched,
354 .ident = "Acer Aspire 5100",
356 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
357 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
359 .driver_data = &quirk_acer_travelmate_2490,
362 .callback = dmi_matched,
363 .ident = "Acer Aspire 5610",
365 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
366 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
368 .driver_data = &quirk_acer_travelmate_2490,
371 .callback = dmi_matched,
372 .ident = "Acer Aspire 5630",
374 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
375 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
377 .driver_data = &quirk_acer_travelmate_2490,
380 .callback = dmi_matched,
381 .ident = "Acer Aspire 5650",
383 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
384 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
386 .driver_data = &quirk_acer_travelmate_2490,
389 .callback = dmi_matched,
390 .ident = "Acer Aspire 5680",
392 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
393 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
395 .driver_data = &quirk_acer_travelmate_2490,
398 .callback = dmi_matched,
399 .ident = "Acer Aspire 9110",
401 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
402 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
404 .driver_data = &quirk_acer_travelmate_2490,
407 .callback = dmi_matched,
408 .ident = "Acer TravelMate 2490",
410 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
411 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
413 .driver_data = &quirk_acer_travelmate_2490,
416 .callback = dmi_matched,
417 .ident = "Acer TravelMate 4200",
419 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
420 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
422 .driver_data = &quirk_acer_travelmate_2490,
425 .callback = dmi_matched,
426 .ident = "Fujitsu Siemens Amilo Li 1718",
428 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
429 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
431 .driver_data = &quirk_fujitsu_amilo_li_1718,
434 .callback = dmi_matched,
435 .ident = "Medion MD 98300",
437 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
438 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
440 .driver_data = &quirk_medion_md_98300,
445 /* Find which quirks are needed for a particular vendor/ model pair */
446 static void find_quirks(void)
449 dmi_check_system(acer_quirks);
450 } else if (force_series == 2490) {
451 quirks = &quirk_acer_travelmate_2490;
455 quirks = &quirk_unknown;
461 * General interface convenience methods
464 static bool has_cap(u32 cap)
466 if ((interface->capability & cap) != 0)
473 * AMW0 (V1) interface
490 static acpi_status wmab_execute(struct wmab_args *regbuf,
491 struct acpi_buffer *result)
493 struct acpi_buffer input;
495 input.length = sizeof(struct wmab_args);
496 input.pointer = (u8 *)regbuf;
498 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
503 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
504 struct wmi_interface *iface)
510 case ACER_CAP_MAILLED:
511 switch (quirks->mailled) {
513 err = ec_read(0xA, &result);
516 *value = (result >> 7) & 0x1;
520 case ACER_CAP_WIRELESS:
521 switch (quirks->wireless) {
523 err = ec_read(0x7B, &result);
526 *value = result & 0x1;
529 err = ec_read(0x71, &result);
532 *value = result & 0x1;
535 err = ec_read(0xA, &result);
538 *value = (result >> 2) & 0x1;
542 case ACER_CAP_BLUETOOTH:
543 switch (quirks->bluetooth) {
545 err = ec_read(0xA, &result);
548 *value = (result >> 4) & 0x1;
552 case ACER_CAP_BRIGHTNESS:
553 switch (quirks->brightness) {
555 err = ec_read(0x83, &result);
568 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
570 struct wmab_args args;
572 args.eax = ACER_AMW0_WRITE;
573 args.ebx = value ? (1<<8) : 0;
574 args.ecx = args.edx = 0;
577 case ACER_CAP_MAILLED:
579 return AE_BAD_PARAMETER;
580 args.ebx |= ACER_AMW0_MAILLED_MASK;
582 case ACER_CAP_WIRELESS:
584 return AE_BAD_PARAMETER;
585 args.ebx |= ACER_AMW0_WIRELESS_MASK;
587 case ACER_CAP_BLUETOOTH:
589 return AE_BAD_PARAMETER;
590 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
592 case ACER_CAP_BRIGHTNESS:
593 if (value > max_brightness)
594 return AE_BAD_PARAMETER;
595 switch (quirks->brightness) {
597 return ec_write(0x83, value);
604 /* Actually do the set */
605 return wmab_execute(&args, NULL);
608 static acpi_status AMW0_find_mailled(void)
610 struct wmab_args args;
612 acpi_status status = AE_OK;
613 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
614 union acpi_object *obj;
617 args.ebx = args.ecx = args.edx = 0;
619 status = wmab_execute(&args, &out);
620 if (ACPI_FAILURE(status))
623 obj = (union acpi_object *) out.pointer;
624 if (obj && obj->type == ACPI_TYPE_BUFFER &&
625 obj->buffer.length == sizeof(struct wmab_ret)) {
626 ret = *((struct wmab_ret *) obj->buffer.pointer);
633 interface->capability |= ACER_CAP_MAILLED;
640 static acpi_status AMW0_set_capabilities(void)
642 struct wmab_args args;
645 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
646 union acpi_object *obj;
649 * On laptops with this strange GUID (non Acer), normal probing doesn't
652 if (wmi_has_guid(AMW0_GUID2)) {
653 interface->capability |= ACER_CAP_WIRELESS;
657 args.eax = ACER_AMW0_WRITE;
658 args.ecx = args.edx = 0;
660 args.ebx = 0xa2 << 8;
661 args.ebx |= ACER_AMW0_WIRELESS_MASK;
663 status = wmab_execute(&args, &out);
664 if (ACPI_FAILURE(status))
668 if (obj && obj->type == ACPI_TYPE_BUFFER &&
669 obj->buffer.length == sizeof(struct wmab_ret)) {
670 ret = *((struct wmab_ret *) obj->buffer.pointer);
677 interface->capability |= ACER_CAP_WIRELESS;
680 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
683 * It's ok to use existing buffer for next wmab_execute call.
684 * But we need to kfree(out.pointer) if next wmab_execute fail.
686 status = wmab_execute(&args, &out);
687 if (ACPI_FAILURE(status))
690 obj = (union acpi_object *) out.pointer;
691 if (obj && obj->type == ACPI_TYPE_BUFFER
692 && obj->buffer.length == sizeof(struct wmab_ret)) {
693 ret = *((struct wmab_ret *) obj->buffer.pointer);
700 interface->capability |= ACER_CAP_BLUETOOTH;
703 * This appears to be safe to enable, since all Wistron based laptops
704 * appear to use the same EC register for brightness, even if they
705 * differ for wireless, etc
707 if (quirks->brightness >= 0)
708 interface->capability |= ACER_CAP_BRIGHTNESS;
716 static struct wmi_interface AMW0_interface = {
720 static struct wmi_interface AMW0_V2_interface = {
721 .type = ACER_AMW0_V2,
725 * New interface (The WMID interface)
728 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
730 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
731 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
732 union acpi_object *obj;
736 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
738 if (ACPI_FAILURE(status))
741 obj = (union acpi_object *) result.pointer;
742 if (obj && obj->type == ACPI_TYPE_BUFFER &&
743 obj->buffer.length == sizeof(u32)) {
744 tmp = *((u32 *) obj->buffer.pointer);
752 kfree(result.pointer);
757 static acpi_status WMID_get_u32(u32 *value, u32 cap,
758 struct wmi_interface *iface)
762 u32 result, method_id = 0;
765 case ACER_CAP_WIRELESS:
766 method_id = ACER_WMID_GET_WIRELESS_METHODID;
768 case ACER_CAP_BLUETOOTH:
769 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
771 case ACER_CAP_BRIGHTNESS:
772 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
774 case ACER_CAP_THREEG:
775 method_id = ACER_WMID_GET_THREEG_METHODID;
777 case ACER_CAP_MAILLED:
778 if (quirks->mailled == 1) {
786 status = WMI_execute_u32(method_id, 0, &result);
788 if (ACPI_SUCCESS(status))
794 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
800 case ACER_CAP_BRIGHTNESS:
801 if (value > max_brightness)
802 return AE_BAD_PARAMETER;
803 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
805 case ACER_CAP_WIRELESS:
807 return AE_BAD_PARAMETER;
808 method_id = ACER_WMID_SET_WIRELESS_METHODID;
810 case ACER_CAP_BLUETOOTH:
812 return AE_BAD_PARAMETER;
813 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
815 case ACER_CAP_THREEG:
817 return AE_BAD_PARAMETER;
818 method_id = ACER_WMID_SET_THREEG_METHODID;
820 case ACER_CAP_MAILLED:
822 return AE_BAD_PARAMETER;
823 if (quirks->mailled == 1) {
824 param = value ? 0x92 : 0x93;
826 i8042_command(¶m, 0x1059);
834 return WMI_execute_u32(method_id, (u32)value, NULL);
837 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
839 struct hotkey_function_type_aa *type_aa;
841 /* We are looking for OEM-specific Type AAh */
842 if (header->type != 0xAA)
846 type_aa = (struct hotkey_function_type_aa *) header;
848 printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n",
849 type_aa->commun_func_bitmap);
851 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
852 interface->capability |= ACER_CAP_WIRELESS;
853 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
854 interface->capability |= ACER_CAP_THREEG;
855 if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
856 interface->capability |= ACER_CAP_BLUETOOTH;
859 static acpi_status WMID_set_capabilities(void)
861 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
862 union acpi_object *obj;
866 status = wmi_query_block(WMID_GUID2, 1, &out);
867 if (ACPI_FAILURE(status))
870 obj = (union acpi_object *) out.pointer;
871 if (obj && obj->type == ACPI_TYPE_BUFFER &&
872 obj->buffer.length == sizeof(u32)) {
873 devices = *((u32 *) obj->buffer.pointer);
879 dmi_walk(type_aa_dmi_decode, NULL);
881 interface->capability |= ACER_CAP_WIRELESS;
882 interface->capability |= ACER_CAP_THREEG;
884 interface->capability |= ACER_CAP_BLUETOOTH;
887 /* WMID always provides brightness methods */
888 interface->capability |= ACER_CAP_BRIGHTNESS;
890 if (!(devices & 0x20))
891 max_brightness = 0x9;
897 static struct wmi_interface wmid_interface = {
902 * Generic Device (interface-independent)
905 static acpi_status get_u32(u32 *value, u32 cap)
907 acpi_status status = AE_ERROR;
909 switch (interface->type) {
911 status = AMW0_get_u32(value, cap, interface);
914 if (cap == ACER_CAP_MAILLED) {
915 status = AMW0_get_u32(value, cap, interface);
919 status = WMID_get_u32(value, cap, interface);
926 static acpi_status set_u32(u32 value, u32 cap)
930 if (interface->capability & cap) {
931 switch (interface->type) {
933 return AMW0_set_u32(value, cap, interface);
935 if (cap == ACER_CAP_MAILLED)
936 return AMW0_set_u32(value, cap, interface);
939 * On some models, some WMID methods don't toggle
940 * properly. For those cases, we want to run the AMW0
941 * method afterwards to be certain we've really toggled
944 if (cap == ACER_CAP_WIRELESS ||
945 cap == ACER_CAP_BLUETOOTH) {
946 status = WMID_set_u32(value, cap, interface);
947 if (ACPI_FAILURE(status))
950 return AMW0_set_u32(value, cap, interface);
953 return WMID_set_u32(value, cap, interface);
955 return AE_BAD_PARAMETER;
958 return AE_BAD_PARAMETER;
961 static void __init acer_commandline_init(void)
964 * These will all fail silently if the value given is invalid, or the
965 * capability isn't available on the given interface
967 set_u32(mailled, ACER_CAP_MAILLED);
969 set_u32(threeg, ACER_CAP_THREEG);
970 set_u32(brightness, ACER_CAP_BRIGHTNESS);
974 * LED device (Mail LED only, no other LEDs known yet)
976 static void mail_led_set(struct led_classdev *led_cdev,
977 enum led_brightness value)
979 set_u32(value, ACER_CAP_MAILLED);
982 static struct led_classdev mail_led = {
983 .name = "acer-wmi::mail",
984 .brightness_set = mail_led_set,
987 static int __devinit acer_led_init(struct device *dev)
989 return led_classdev_register(dev, &mail_led);
992 static void acer_led_exit(void)
994 led_classdev_unregister(&mail_led);
1000 static struct backlight_device *acer_backlight_device;
1002 static int read_brightness(struct backlight_device *bd)
1005 get_u32(&value, ACER_CAP_BRIGHTNESS);
1009 static int update_bl_status(struct backlight_device *bd)
1011 int intensity = bd->props.brightness;
1013 if (bd->props.power != FB_BLANK_UNBLANK)
1015 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1018 set_u32(intensity, ACER_CAP_BRIGHTNESS);
1023 static const struct backlight_ops acer_bl_ops = {
1024 .get_brightness = read_brightness,
1025 .update_status = update_bl_status,
1028 static int __devinit acer_backlight_init(struct device *dev)
1030 struct backlight_properties props;
1031 struct backlight_device *bd;
1033 memset(&props, 0, sizeof(struct backlight_properties));
1034 props.max_brightness = max_brightness;
1035 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1038 printk(ACER_ERR "Could not register Acer backlight device\n");
1039 acer_backlight_device = NULL;
1043 acer_backlight_device = bd;
1045 bd->props.power = FB_BLANK_UNBLANK;
1046 bd->props.brightness = read_brightness(bd);
1047 backlight_update_status(bd);
1051 static void acer_backlight_exit(void)
1053 backlight_device_unregister(acer_backlight_device);
1056 static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1058 struct wmid3_gds_return_value return_value;
1060 union acpi_object *obj;
1061 struct wmid3_gds_input_param params = {
1062 .function_num = 0x1,
1063 .hotkey_number = 0x01,
1066 struct acpi_buffer input = {
1067 sizeof(struct wmid3_gds_input_param),
1070 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1072 status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1073 if (ACPI_FAILURE(status))
1076 obj = output.pointer;
1080 else if (obj->type != ACPI_TYPE_BUFFER) {
1084 if (obj->buffer.length != 8) {
1085 printk(ACER_WARNING "Unknown buffer length %d\n",
1086 obj->buffer.length);
1091 return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1094 if (return_value.error_code || return_value.ec_return_value)
1095 printk(ACER_WARNING "Get Device Status failed: "
1096 "0x%x - 0x%x\n", return_value.error_code,
1097 return_value.ec_return_value);
1099 *value = !!(return_value.devices & device);
1104 static acpi_status get_device_status(u32 *value, u32 cap)
1106 if (wmi_has_guid(WMID_GUID3)) {
1110 case ACER_CAP_WIRELESS:
1111 device = ACER_WMID3_GDS_WIRELESS;
1113 case ACER_CAP_BLUETOOTH:
1114 device = ACER_WMID3_GDS_BLUETOOTH;
1116 case ACER_CAP_THREEG:
1117 device = ACER_WMID3_GDS_THREEG;
1122 return wmid3_get_device_status(value, device);
1125 return get_u32(value, cap);
1132 static void acer_rfkill_update(struct work_struct *ignored);
1133 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1134 static void acer_rfkill_update(struct work_struct *ignored)
1139 status = get_u32(&state, ACER_CAP_WIRELESS);
1140 if (ACPI_SUCCESS(status))
1141 rfkill_set_sw_state(wireless_rfkill, !state);
1143 if (has_cap(ACER_CAP_BLUETOOTH)) {
1144 status = get_u32(&state, ACER_CAP_BLUETOOTH);
1145 if (ACPI_SUCCESS(status))
1146 rfkill_set_sw_state(bluetooth_rfkill, !state);
1149 if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1150 status = wmid3_get_device_status(&state,
1151 ACER_WMID3_GDS_THREEG);
1152 if (ACPI_SUCCESS(status))
1153 rfkill_set_sw_state(threeg_rfkill, !state);
1156 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1159 static int acer_rfkill_set(void *data, bool blocked)
1162 u32 cap = (unsigned long)data;
1163 status = set_u32(!blocked, cap);
1164 if (ACPI_FAILURE(status))
1169 static const struct rfkill_ops acer_rfkill_ops = {
1170 .set_block = acer_rfkill_set,
1173 static struct rfkill *acer_rfkill_register(struct device *dev,
1174 enum rfkill_type type,
1175 char *name, u32 cap)
1178 struct rfkill *rfkill_dev;
1182 rfkill_dev = rfkill_alloc(name, dev, type,
1184 (void *)(unsigned long)cap);
1186 return ERR_PTR(-ENOMEM);
1188 status = get_device_status(&state, cap);
1189 if (ACPI_SUCCESS(status))
1190 rfkill_init_sw_state(rfkill_dev, !state);
1192 err = rfkill_register(rfkill_dev);
1194 rfkill_destroy(rfkill_dev);
1195 return ERR_PTR(err);
1200 static int acer_rfkill_init(struct device *dev)
1202 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1203 "acer-wireless", ACER_CAP_WIRELESS);
1204 if (IS_ERR(wireless_rfkill))
1205 return PTR_ERR(wireless_rfkill);
1207 if (has_cap(ACER_CAP_BLUETOOTH)) {
1208 bluetooth_rfkill = acer_rfkill_register(dev,
1209 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1210 ACER_CAP_BLUETOOTH);
1211 if (IS_ERR(bluetooth_rfkill)) {
1212 rfkill_unregister(wireless_rfkill);
1213 rfkill_destroy(wireless_rfkill);
1214 return PTR_ERR(bluetooth_rfkill);
1218 if (has_cap(ACER_CAP_THREEG)) {
1219 threeg_rfkill = acer_rfkill_register(dev,
1220 RFKILL_TYPE_WWAN, "acer-threeg",
1222 if (IS_ERR(threeg_rfkill)) {
1223 rfkill_unregister(wireless_rfkill);
1224 rfkill_destroy(wireless_rfkill);
1225 rfkill_unregister(bluetooth_rfkill);
1226 rfkill_destroy(bluetooth_rfkill);
1227 return PTR_ERR(threeg_rfkill);
1231 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1236 static void acer_rfkill_exit(void)
1238 cancel_delayed_work_sync(&acer_rfkill_work);
1240 rfkill_unregister(wireless_rfkill);
1241 rfkill_destroy(wireless_rfkill);
1243 if (has_cap(ACER_CAP_BLUETOOTH)) {
1244 rfkill_unregister(bluetooth_rfkill);
1245 rfkill_destroy(bluetooth_rfkill);
1248 if (has_cap(ACER_CAP_THREEG)) {
1249 rfkill_unregister(threeg_rfkill);
1250 rfkill_destroy(threeg_rfkill);
1258 static ssize_t show_bool_threeg(struct device *dev,
1259 struct device_attribute *attr, char *buf)
1263 if (wmi_has_guid(WMID_GUID3))
1264 status = wmid3_get_device_status(&result,
1265 ACER_WMID3_GDS_THREEG);
1267 status = get_u32(&result, ACER_CAP_THREEG);
1268 if (ACPI_SUCCESS(status))
1269 return sprintf(buf, "%u\n", result);
1270 return sprintf(buf, "Read error\n");
1273 static ssize_t set_bool_threeg(struct device *dev,
1274 struct device_attribute *attr, const char *buf, size_t count)
1276 u32 tmp = simple_strtoul(buf, NULL, 10);
1277 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1278 if (ACPI_FAILURE(status))
1282 static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1285 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1288 switch (interface->type) {
1290 return sprintf(buf, "AMW0\n");
1292 return sprintf(buf, "AMW0 v2\n");
1294 return sprintf(buf, "WMID\n");
1296 return sprintf(buf, "Error!\n");
1300 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1302 static void acer_wmi_notify(u32 value, void *context)
1304 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1305 union acpi_object *obj;
1306 struct event_return_value return_value;
1309 status = wmi_get_event_data(value, &response);
1310 if (status != AE_OK) {
1311 printk(ACER_WARNING "bad event status 0x%x\n", status);
1315 obj = (union acpi_object *)response.pointer;
1319 if (obj->type != ACPI_TYPE_BUFFER) {
1320 printk(ACER_WARNING "Unknown response received %d\n",
1325 if (obj->buffer.length != 8) {
1326 printk(ACER_WARNING "Unknown buffer length %d\n",
1327 obj->buffer.length);
1332 return_value = *((struct event_return_value *)obj->buffer.pointer);
1335 switch (return_value.function) {
1336 case WMID_HOTKEY_EVENT:
1337 if (!sparse_keymap_report_event(acer_wmi_input_dev,
1338 return_value.key_num, 1, true))
1339 printk(ACER_WARNING "Unknown key number - 0x%x\n",
1340 return_value.key_num);
1343 printk(ACER_WARNING "Unknown function number - %d - %d\n",
1344 return_value.function, return_value.key_num);
1350 wmid3_set_lm_mode(struct lm_input_params *params,
1351 struct lm_return_value *return_value)
1354 union acpi_object *obj;
1356 struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1357 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1359 status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1360 if (ACPI_FAILURE(status))
1363 obj = output.pointer;
1367 else if (obj->type != ACPI_TYPE_BUFFER) {
1371 if (obj->buffer.length != 4) {
1372 printk(ACER_WARNING "Unknown buffer length %d\n",
1373 obj->buffer.length);
1378 *return_value = *((struct lm_return_value *)obj->buffer.pointer);
1384 static int acer_wmi_enable_ec_raw(void)
1386 struct lm_return_value return_value;
1388 struct lm_input_params params = {
1389 .function_num = 0x1,
1390 .commun_devices = 0xFFFF,
1392 .lm_status = 0x00, /* Launch Manager Deactive */
1395 status = wmid3_set_lm_mode(¶ms, &return_value);
1397 if (return_value.error_code || return_value.ec_return_value)
1398 printk(ACER_WARNING "Enabling EC raw mode failed: "
1399 "0x%x - 0x%x\n", return_value.error_code,
1400 return_value.ec_return_value);
1402 printk(ACER_INFO "Enabled EC raw mode");
1407 static int acer_wmi_enable_lm(void)
1409 struct lm_return_value return_value;
1411 struct lm_input_params params = {
1412 .function_num = 0x1,
1413 .commun_devices = 0xFFFF,
1415 .lm_status = 0x01, /* Launch Manager Active */
1418 status = wmid3_set_lm_mode(¶ms, &return_value);
1420 if (return_value.error_code || return_value.ec_return_value)
1421 printk(ACER_WARNING "Enabling Launch Manager failed: "
1422 "0x%x - 0x%x\n", return_value.error_code,
1423 return_value.ec_return_value);
1428 static int __init acer_wmi_input_setup(void)
1433 acer_wmi_input_dev = input_allocate_device();
1434 if (!acer_wmi_input_dev)
1437 acer_wmi_input_dev->name = "Acer WMI hotkeys";
1438 acer_wmi_input_dev->phys = "wmi/input0";
1439 acer_wmi_input_dev->id.bustype = BUS_HOST;
1441 err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1445 status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1446 acer_wmi_notify, NULL);
1447 if (ACPI_FAILURE(status)) {
1449 goto err_free_keymap;
1452 err = input_register_device(acer_wmi_input_dev);
1454 goto err_uninstall_notifier;
1458 err_uninstall_notifier:
1459 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1461 sparse_keymap_free(acer_wmi_input_dev);
1463 input_free_device(acer_wmi_input_dev);
1467 static void acer_wmi_input_destroy(void)
1469 wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1470 sparse_keymap_free(acer_wmi_input_dev);
1471 input_unregister_device(acer_wmi_input_dev);
1477 static u32 get_wmid_devices(void)
1479 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1480 union acpi_object *obj;
1484 status = wmi_query_block(WMID_GUID2, 1, &out);
1485 if (ACPI_FAILURE(status))
1488 obj = (union acpi_object *) out.pointer;
1489 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1490 obj->buffer.length == sizeof(u32)) {
1491 devices = *((u32 *) obj->buffer.pointer);
1501 static int __devinit acer_platform_probe(struct platform_device *device)
1505 if (has_cap(ACER_CAP_MAILLED)) {
1506 err = acer_led_init(&device->dev);
1511 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1512 err = acer_backlight_init(&device->dev);
1514 goto error_brightness;
1517 err = acer_rfkill_init(&device->dev);
1524 if (has_cap(ACER_CAP_BRIGHTNESS))
1525 acer_backlight_exit();
1527 if (has_cap(ACER_CAP_MAILLED))
1533 static int acer_platform_remove(struct platform_device *device)
1535 if (has_cap(ACER_CAP_MAILLED))
1537 if (has_cap(ACER_CAP_BRIGHTNESS))
1538 acer_backlight_exit();
1544 static int acer_platform_suspend(struct platform_device *dev,
1548 struct acer_data *data = &interface->data;
1553 if (has_cap(ACER_CAP_MAILLED)) {
1554 get_u32(&value, ACER_CAP_MAILLED);
1555 data->mailled = value;
1558 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1559 get_u32(&value, ACER_CAP_BRIGHTNESS);
1560 data->brightness = value;
1566 static int acer_platform_resume(struct platform_device *device)
1568 struct acer_data *data = &interface->data;
1573 if (has_cap(ACER_CAP_MAILLED))
1574 set_u32(data->mailled, ACER_CAP_MAILLED);
1576 if (has_cap(ACER_CAP_BRIGHTNESS))
1577 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1582 static struct platform_driver acer_platform_driver = {
1585 .owner = THIS_MODULE,
1587 .probe = acer_platform_probe,
1588 .remove = acer_platform_remove,
1589 .suspend = acer_platform_suspend,
1590 .resume = acer_platform_resume,
1593 static struct platform_device *acer_platform_device;
1595 static int remove_sysfs(struct platform_device *device)
1597 if (has_cap(ACER_CAP_THREEG))
1598 device_remove_file(&device->dev, &dev_attr_threeg);
1600 device_remove_file(&device->dev, &dev_attr_interface);
1605 static int create_sysfs(void)
1607 int retval = -ENOMEM;
1609 if (has_cap(ACER_CAP_THREEG)) {
1610 retval = device_create_file(&acer_platform_device->dev,
1616 retval = device_create_file(&acer_platform_device->dev,
1617 &dev_attr_interface);
1624 remove_sysfs(acer_platform_device);
1628 static void remove_debugfs(void)
1630 debugfs_remove(interface->debug.devices);
1631 debugfs_remove(interface->debug.root);
1634 static int create_debugfs(void)
1636 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1637 if (!interface->debug.root) {
1638 printk(ACER_ERR "Failed to create debugfs directory");
1642 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1643 interface->debug.root,
1644 &interface->debug.wmid_devices);
1645 if (!interface->debug.devices)
1655 static int __init acer_wmi_init(void)
1659 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1661 if (dmi_check_system(acer_blacklist)) {
1662 printk(ACER_INFO "Blacklisted hardware detected - "
1670 * Detect which ACPI-WMI interface we're using.
1672 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1673 interface = &AMW0_V2_interface;
1675 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1676 interface = &wmid_interface;
1678 if (wmi_has_guid(WMID_GUID2) && interface) {
1679 if (ACPI_FAILURE(WMID_set_capabilities())) {
1680 printk(ACER_ERR "Unable to detect available WMID "
1684 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1685 printk(ACER_ERR "No WMID device detection method found\n");
1689 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1690 interface = &AMW0_interface;
1692 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1693 printk(ACER_ERR "Unable to detect available AMW0 "
1699 if (wmi_has_guid(AMW0_GUID1))
1700 AMW0_find_mailled();
1703 printk(ACER_INFO "No or unsupported WMI interface, unable to "
1710 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1711 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1712 printk(ACER_INFO "Brightness must be controlled by "
1713 "generic video driver\n");
1716 if (wmi_has_guid(WMID_GUID3)) {
1718 if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
1719 printk(ACER_ERR "Cannot enable EC raw mode\n");
1722 } else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
1723 printk(ACER_ERR "Cannot enable Launch Manager mode\n");
1726 } else if (ec_raw_mode) {
1727 printk(ACER_INFO "No WMID EC raw mode enable method\n");
1730 if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
1731 err = acer_wmi_input_setup();
1736 err = platform_driver_register(&acer_platform_driver);
1738 printk(ACER_ERR "Unable to register platform driver.\n");
1739 goto error_platform_register;
1742 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1743 if (!acer_platform_device) {
1745 goto error_device_alloc;
1748 err = platform_device_add(acer_platform_device);
1750 goto error_device_add;
1752 err = create_sysfs();
1754 goto error_create_sys;
1756 if (wmi_has_guid(WMID_GUID2)) {
1757 interface->debug.wmid_devices = get_wmid_devices();
1758 err = create_debugfs();
1760 goto error_create_debugfs;
1763 /* Override any initial settings with values from the commandline */
1764 acer_commandline_init();
1768 error_create_debugfs:
1769 remove_sysfs(acer_platform_device);
1771 platform_device_del(acer_platform_device);
1773 platform_device_put(acer_platform_device);
1775 platform_driver_unregister(&acer_platform_driver);
1776 error_platform_register:
1777 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1778 acer_wmi_input_destroy();
1783 static void __exit acer_wmi_exit(void)
1785 if (wmi_has_guid(ACERWMID_EVENT_GUID))
1786 acer_wmi_input_destroy();
1788 remove_sysfs(acer_platform_device);
1790 platform_device_unregister(acer_platform_device);
1791 platform_driver_unregister(&acer_platform_driver);
1793 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1797 module_init(acer_wmi_init);
1798 module_exit(acer_wmi_exit);