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>
41 #include <acpi/acpi_drivers.h>
43 MODULE_AUTHOR("Carlos Corbacho");
44 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
45 MODULE_LICENSE("GPL");
47 #define ACER_LOGPREFIX "acer-wmi: "
48 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
49 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
50 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
54 * Meaning is unknown - this number is required for writing to ACPI for AMW0
55 * (it's also used in acerhk when directly accessing the BIOS)
57 #define ACER_AMW0_WRITE 0x9610
60 * Bit masks for the AMW0 interface
62 #define ACER_AMW0_WIRELESS_MASK 0x35
63 #define ACER_AMW0_BLUETOOTH_MASK 0x34
64 #define ACER_AMW0_MAILLED_MASK 0x31
67 * Method IDs for WMID interface
69 #define ACER_WMID_GET_WIRELESS_METHODID 1
70 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
71 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
72 #define ACER_WMID_SET_WIRELESS_METHODID 4
73 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
74 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
75 #define ACER_WMID_GET_THREEG_METHODID 10
76 #define ACER_WMID_SET_THREEG_METHODID 11
79 * Acer ACPI method GUIDs
81 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
82 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
83 #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
84 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
86 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
87 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
90 * Interface capability flags
92 #define ACER_CAP_MAILLED (1<<0)
93 #define ACER_CAP_WIRELESS (1<<1)
94 #define ACER_CAP_BLUETOOTH (1<<2)
95 #define ACER_CAP_BRIGHTNESS (1<<3)
96 #define ACER_CAP_THREEG (1<<4)
97 #define ACER_CAP_ANY (0xFFFFFFFF)
100 * Interface type flags
102 enum interface_flags {
108 #define ACER_DEFAULT_WIRELESS 0
109 #define ACER_DEFAULT_BLUETOOTH 0
110 #define ACER_DEFAULT_MAILLED 0
111 #define ACER_DEFAULT_THREEG 0
113 static int max_brightness = 0xF;
115 static int mailled = -1;
116 static int brightness = -1;
117 static int threeg = -1;
118 static int force_series;
120 module_param(mailled, int, 0444);
121 module_param(brightness, int, 0444);
122 module_param(threeg, int, 0444);
123 module_param(force_series, int, 0444);
124 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
125 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
126 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
127 MODULE_PARM_DESC(force_series, "Force a different laptop series");
137 struct dentry *devices;
141 static struct rfkill *wireless_rfkill;
142 static struct rfkill *bluetooth_rfkill;
144 /* Each low-level interface must define at least some of the following */
145 struct wmi_interface {
146 /* The WMI device type */
149 /* The capabilities this interface provides */
152 /* Private data for the current interface */
153 struct acer_data data;
155 /* debugfs entries associated with this interface */
156 struct acer_debug debug;
159 /* The static interface pointer, points to the currently detected interface */
160 static struct wmi_interface *interface;
163 * Embedded Controller quirks
164 * Some laptops require us to directly access the EC to either enable or query
165 * features that are not available through WMI.
175 static struct quirk_entry *quirks;
177 static void set_quirks(void)
183 interface->capability |= ACER_CAP_MAILLED;
185 if (quirks->brightness)
186 interface->capability |= ACER_CAP_BRIGHTNESS;
189 static int dmi_matched(const struct dmi_system_id *dmi)
191 quirks = dmi->driver_data;
195 static struct quirk_entry quirk_unknown = {
198 static struct quirk_entry quirk_acer_aspire_1520 = {
202 static struct quirk_entry quirk_acer_travelmate_2490 = {
206 /* This AMW0 laptop has no bluetooth */
207 static struct quirk_entry quirk_medion_md_98300 = {
211 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
215 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
216 static struct dmi_system_id __devinitdata acer_blacklist[] = {
218 .ident = "Acer Aspire One (SSD)",
220 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
221 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
225 .ident = "Acer Aspire One (HDD)",
227 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
228 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
234 static struct dmi_system_id acer_quirks[] = {
236 .callback = dmi_matched,
237 .ident = "Acer Aspire 1360",
239 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
240 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
242 .driver_data = &quirk_acer_aspire_1520,
245 .callback = dmi_matched,
246 .ident = "Acer Aspire 1520",
248 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
249 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
251 .driver_data = &quirk_acer_aspire_1520,
254 .callback = dmi_matched,
255 .ident = "Acer Aspire 3100",
257 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
258 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
260 .driver_data = &quirk_acer_travelmate_2490,
263 .callback = dmi_matched,
264 .ident = "Acer Aspire 3610",
266 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
267 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
269 .driver_data = &quirk_acer_travelmate_2490,
272 .callback = dmi_matched,
273 .ident = "Acer Aspire 5100",
275 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
276 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
278 .driver_data = &quirk_acer_travelmate_2490,
281 .callback = dmi_matched,
282 .ident = "Acer Aspire 5610",
284 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
285 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
287 .driver_data = &quirk_acer_travelmate_2490,
290 .callback = dmi_matched,
291 .ident = "Acer Aspire 5630",
293 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
294 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
296 .driver_data = &quirk_acer_travelmate_2490,
299 .callback = dmi_matched,
300 .ident = "Acer Aspire 5650",
302 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
303 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
305 .driver_data = &quirk_acer_travelmate_2490,
308 .callback = dmi_matched,
309 .ident = "Acer Aspire 5680",
311 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
312 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
314 .driver_data = &quirk_acer_travelmate_2490,
317 .callback = dmi_matched,
318 .ident = "Acer Aspire 9110",
320 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
321 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
323 .driver_data = &quirk_acer_travelmate_2490,
326 .callback = dmi_matched,
327 .ident = "Acer TravelMate 2490",
329 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
330 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
332 .driver_data = &quirk_acer_travelmate_2490,
335 .callback = dmi_matched,
336 .ident = "Acer TravelMate 4200",
338 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
339 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
341 .driver_data = &quirk_acer_travelmate_2490,
344 .callback = dmi_matched,
345 .ident = "Fujitsu Siemens Amilo Li 1718",
347 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
348 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
350 .driver_data = &quirk_fujitsu_amilo_li_1718,
353 .callback = dmi_matched,
354 .ident = "Medion MD 98300",
356 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
357 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
359 .driver_data = &quirk_medion_md_98300,
364 /* Find which quirks are needed for a particular vendor/ model pair */
365 static void find_quirks(void)
368 dmi_check_system(acer_quirks);
369 } else if (force_series == 2490) {
370 quirks = &quirk_acer_travelmate_2490;
374 quirks = &quirk_unknown;
380 * General interface convenience methods
383 static bool has_cap(u32 cap)
385 if ((interface->capability & cap) != 0)
392 * AMW0 (V1) interface
409 static acpi_status wmab_execute(struct wmab_args *regbuf,
410 struct acpi_buffer *result)
412 struct acpi_buffer input;
414 input.length = sizeof(struct wmab_args);
415 input.pointer = (u8 *)regbuf;
417 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
422 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
423 struct wmi_interface *iface)
429 case ACER_CAP_MAILLED:
430 switch (quirks->mailled) {
432 err = ec_read(0xA, &result);
435 *value = (result >> 7) & 0x1;
439 case ACER_CAP_WIRELESS:
440 switch (quirks->wireless) {
442 err = ec_read(0x7B, &result);
445 *value = result & 0x1;
448 err = ec_read(0x71, &result);
451 *value = result & 0x1;
454 err = ec_read(0xA, &result);
457 *value = (result >> 2) & 0x1;
461 case ACER_CAP_BLUETOOTH:
462 switch (quirks->bluetooth) {
464 err = ec_read(0xA, &result);
467 *value = (result >> 4) & 0x1;
471 case ACER_CAP_BRIGHTNESS:
472 switch (quirks->brightness) {
474 err = ec_read(0x83, &result);
487 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
489 struct wmab_args args;
491 args.eax = ACER_AMW0_WRITE;
492 args.ebx = value ? (1<<8) : 0;
493 args.ecx = args.edx = 0;
496 case ACER_CAP_MAILLED:
498 return AE_BAD_PARAMETER;
499 args.ebx |= ACER_AMW0_MAILLED_MASK;
501 case ACER_CAP_WIRELESS:
503 return AE_BAD_PARAMETER;
504 args.ebx |= ACER_AMW0_WIRELESS_MASK;
506 case ACER_CAP_BLUETOOTH:
508 return AE_BAD_PARAMETER;
509 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
511 case ACER_CAP_BRIGHTNESS:
512 if (value > max_brightness)
513 return AE_BAD_PARAMETER;
514 switch (quirks->brightness) {
516 return ec_write(0x83, value);
523 /* Actually do the set */
524 return wmab_execute(&args, NULL);
527 static acpi_status AMW0_find_mailled(void)
529 struct wmab_args args;
531 acpi_status status = AE_OK;
532 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
533 union acpi_object *obj;
536 args.ebx = args.ecx = args.edx = 0;
538 status = wmab_execute(&args, &out);
539 if (ACPI_FAILURE(status))
542 obj = (union acpi_object *) out.pointer;
543 if (obj && obj->type == ACPI_TYPE_BUFFER &&
544 obj->buffer.length == sizeof(struct wmab_ret)) {
545 ret = *((struct wmab_ret *) obj->buffer.pointer);
552 interface->capability |= ACER_CAP_MAILLED;
559 static acpi_status AMW0_set_capabilities(void)
561 struct wmab_args args;
564 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
565 union acpi_object *obj;
568 * On laptops with this strange GUID (non Acer), normal probing doesn't
571 if (wmi_has_guid(AMW0_GUID2)) {
572 interface->capability |= ACER_CAP_WIRELESS;
576 args.eax = ACER_AMW0_WRITE;
577 args.ecx = args.edx = 0;
579 args.ebx = 0xa2 << 8;
580 args.ebx |= ACER_AMW0_WIRELESS_MASK;
582 status = wmab_execute(&args, &out);
583 if (ACPI_FAILURE(status))
587 if (obj && obj->type == ACPI_TYPE_BUFFER &&
588 obj->buffer.length == sizeof(struct wmab_ret)) {
589 ret = *((struct wmab_ret *) obj->buffer.pointer);
596 interface->capability |= ACER_CAP_WIRELESS;
599 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
602 * It's ok to use existing buffer for next wmab_execute call.
603 * But we need to kfree(out.pointer) if next wmab_execute fail.
605 status = wmab_execute(&args, &out);
606 if (ACPI_FAILURE(status))
609 obj = (union acpi_object *) out.pointer;
610 if (obj && obj->type == ACPI_TYPE_BUFFER
611 && obj->buffer.length == sizeof(struct wmab_ret)) {
612 ret = *((struct wmab_ret *) obj->buffer.pointer);
619 interface->capability |= ACER_CAP_BLUETOOTH;
622 * This appears to be safe to enable, since all Wistron based laptops
623 * appear to use the same EC register for brightness, even if they
624 * differ for wireless, etc
626 if (quirks->brightness >= 0)
627 interface->capability |= ACER_CAP_BRIGHTNESS;
635 static struct wmi_interface AMW0_interface = {
639 static struct wmi_interface AMW0_V2_interface = {
640 .type = ACER_AMW0_V2,
644 * New interface (The WMID interface)
647 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
649 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
650 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
651 union acpi_object *obj;
655 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
657 if (ACPI_FAILURE(status))
660 obj = (union acpi_object *) result.pointer;
661 if (obj && obj->type == ACPI_TYPE_BUFFER &&
662 obj->buffer.length == sizeof(u32)) {
663 tmp = *((u32 *) obj->buffer.pointer);
671 kfree(result.pointer);
676 static acpi_status WMID_get_u32(u32 *value, u32 cap,
677 struct wmi_interface *iface)
681 u32 result, method_id = 0;
684 case ACER_CAP_WIRELESS:
685 method_id = ACER_WMID_GET_WIRELESS_METHODID;
687 case ACER_CAP_BLUETOOTH:
688 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
690 case ACER_CAP_BRIGHTNESS:
691 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
693 case ACER_CAP_THREEG:
694 method_id = ACER_WMID_GET_THREEG_METHODID;
696 case ACER_CAP_MAILLED:
697 if (quirks->mailled == 1) {
705 status = WMI_execute_u32(method_id, 0, &result);
707 if (ACPI_SUCCESS(status))
713 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
719 case ACER_CAP_BRIGHTNESS:
720 if (value > max_brightness)
721 return AE_BAD_PARAMETER;
722 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
724 case ACER_CAP_WIRELESS:
726 return AE_BAD_PARAMETER;
727 method_id = ACER_WMID_SET_WIRELESS_METHODID;
729 case ACER_CAP_BLUETOOTH:
731 return AE_BAD_PARAMETER;
732 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
734 case ACER_CAP_THREEG:
736 return AE_BAD_PARAMETER;
737 method_id = ACER_WMID_SET_THREEG_METHODID;
739 case ACER_CAP_MAILLED:
741 return AE_BAD_PARAMETER;
742 if (quirks->mailled == 1) {
743 param = value ? 0x92 : 0x93;
745 i8042_command(¶m, 0x1059);
753 return WMI_execute_u32(method_id, (u32)value, NULL);
756 static acpi_status WMID_set_capabilities(void)
758 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
759 union acpi_object *obj;
763 status = wmi_query_block(WMID_GUID2, 1, &out);
764 if (ACPI_FAILURE(status))
767 obj = (union acpi_object *) out.pointer;
768 if (obj && obj->type == ACPI_TYPE_BUFFER &&
769 obj->buffer.length == sizeof(u32)) {
770 devices = *((u32 *) obj->buffer.pointer);
776 /* Not sure on the meaning of the relevant bits yet to detect these */
777 interface->capability |= ACER_CAP_WIRELESS;
778 interface->capability |= ACER_CAP_THREEG;
780 /* WMID always provides brightness methods */
781 interface->capability |= ACER_CAP_BRIGHTNESS;
784 interface->capability |= ACER_CAP_BLUETOOTH;
786 if (!(devices & 0x20))
787 max_brightness = 0x9;
793 static struct wmi_interface wmid_interface = {
798 * Generic Device (interface-independent)
801 static acpi_status get_u32(u32 *value, u32 cap)
803 acpi_status status = AE_ERROR;
805 switch (interface->type) {
807 status = AMW0_get_u32(value, cap, interface);
810 if (cap == ACER_CAP_MAILLED) {
811 status = AMW0_get_u32(value, cap, interface);
815 status = WMID_get_u32(value, cap, interface);
822 static acpi_status set_u32(u32 value, u32 cap)
826 if (interface->capability & cap) {
827 switch (interface->type) {
829 return AMW0_set_u32(value, cap, interface);
831 if (cap == ACER_CAP_MAILLED)
832 return AMW0_set_u32(value, cap, interface);
835 * On some models, some WMID methods don't toggle
836 * properly. For those cases, we want to run the AMW0
837 * method afterwards to be certain we've really toggled
840 if (cap == ACER_CAP_WIRELESS ||
841 cap == ACER_CAP_BLUETOOTH) {
842 status = WMID_set_u32(value, cap, interface);
843 if (ACPI_FAILURE(status))
846 return AMW0_set_u32(value, cap, interface);
849 return WMID_set_u32(value, cap, interface);
851 return AE_BAD_PARAMETER;
854 return AE_BAD_PARAMETER;
857 static void __init acer_commandline_init(void)
860 * These will all fail silently if the value given is invalid, or the
861 * capability isn't available on the given interface
863 set_u32(mailled, ACER_CAP_MAILLED);
864 set_u32(threeg, ACER_CAP_THREEG);
865 set_u32(brightness, ACER_CAP_BRIGHTNESS);
869 * LED device (Mail LED only, no other LEDs known yet)
871 static void mail_led_set(struct led_classdev *led_cdev,
872 enum led_brightness value)
874 set_u32(value, ACER_CAP_MAILLED);
877 static struct led_classdev mail_led = {
878 .name = "acer-wmi::mail",
879 .brightness_set = mail_led_set,
882 static int __devinit acer_led_init(struct device *dev)
884 return led_classdev_register(dev, &mail_led);
887 static void acer_led_exit(void)
889 led_classdev_unregister(&mail_led);
895 static struct backlight_device *acer_backlight_device;
897 static int read_brightness(struct backlight_device *bd)
900 get_u32(&value, ACER_CAP_BRIGHTNESS);
904 static int update_bl_status(struct backlight_device *bd)
906 int intensity = bd->props.brightness;
908 if (bd->props.power != FB_BLANK_UNBLANK)
910 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
913 set_u32(intensity, ACER_CAP_BRIGHTNESS);
918 static struct backlight_ops acer_bl_ops = {
919 .get_brightness = read_brightness,
920 .update_status = update_bl_status,
923 static int __devinit acer_backlight_init(struct device *dev)
925 struct backlight_properties props;
926 struct backlight_device *bd;
928 memset(&props, 0, sizeof(struct backlight_properties));
929 props.max_brightness = max_brightness;
930 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
933 printk(ACER_ERR "Could not register Acer backlight device\n");
934 acer_backlight_device = NULL;
938 acer_backlight_device = bd;
940 bd->props.power = FB_BLANK_UNBLANK;
941 bd->props.brightness = read_brightness(bd);
942 backlight_update_status(bd);
946 static void acer_backlight_exit(void)
948 backlight_device_unregister(acer_backlight_device);
954 static void acer_rfkill_update(struct work_struct *ignored);
955 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
956 static void acer_rfkill_update(struct work_struct *ignored)
961 status = get_u32(&state, ACER_CAP_WIRELESS);
962 if (ACPI_SUCCESS(status))
963 rfkill_set_sw_state(wireless_rfkill, !state);
965 if (has_cap(ACER_CAP_BLUETOOTH)) {
966 status = get_u32(&state, ACER_CAP_BLUETOOTH);
967 if (ACPI_SUCCESS(status))
968 rfkill_set_sw_state(bluetooth_rfkill, !state);
971 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
974 static int acer_rfkill_set(void *data, bool blocked)
977 u32 cap = (unsigned long)data;
978 status = set_u32(!blocked, cap);
979 if (ACPI_FAILURE(status))
984 static const struct rfkill_ops acer_rfkill_ops = {
985 .set_block = acer_rfkill_set,
988 static struct rfkill *acer_rfkill_register(struct device *dev,
989 enum rfkill_type type,
993 struct rfkill *rfkill_dev;
995 rfkill_dev = rfkill_alloc(name, dev, type,
997 (void *)(unsigned long)cap);
999 return ERR_PTR(-ENOMEM);
1001 err = rfkill_register(rfkill_dev);
1003 rfkill_destroy(rfkill_dev);
1004 return ERR_PTR(err);
1009 static int acer_rfkill_init(struct device *dev)
1011 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1012 "acer-wireless", ACER_CAP_WIRELESS);
1013 if (IS_ERR(wireless_rfkill))
1014 return PTR_ERR(wireless_rfkill);
1016 if (has_cap(ACER_CAP_BLUETOOTH)) {
1017 bluetooth_rfkill = acer_rfkill_register(dev,
1018 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1019 ACER_CAP_BLUETOOTH);
1020 if (IS_ERR(bluetooth_rfkill)) {
1021 rfkill_unregister(wireless_rfkill);
1022 rfkill_destroy(wireless_rfkill);
1023 return PTR_ERR(bluetooth_rfkill);
1027 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1032 static void acer_rfkill_exit(void)
1034 cancel_delayed_work_sync(&acer_rfkill_work);
1036 rfkill_unregister(wireless_rfkill);
1037 rfkill_destroy(wireless_rfkill);
1039 if (has_cap(ACER_CAP_BLUETOOTH)) {
1040 rfkill_unregister(bluetooth_rfkill);
1041 rfkill_destroy(bluetooth_rfkill);
1049 static ssize_t show_bool_threeg(struct device *dev,
1050 struct device_attribute *attr, char *buf)
1053 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1054 if (ACPI_SUCCESS(status))
1055 return sprintf(buf, "%u\n", result);
1056 return sprintf(buf, "Read error\n");
1059 static ssize_t set_bool_threeg(struct device *dev,
1060 struct device_attribute *attr, const char *buf, size_t count)
1062 u32 tmp = simple_strtoul(buf, NULL, 10);
1063 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1064 if (ACPI_FAILURE(status))
1068 static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1071 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1074 switch (interface->type) {
1076 return sprintf(buf, "AMW0\n");
1078 return sprintf(buf, "AMW0 v2\n");
1080 return sprintf(buf, "WMID\n");
1082 return sprintf(buf, "Error!\n");
1086 static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1091 static u32 get_wmid_devices(void)
1093 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1094 union acpi_object *obj;
1098 status = wmi_query_block(WMID_GUID2, 1, &out);
1099 if (ACPI_FAILURE(status))
1102 obj = (union acpi_object *) out.pointer;
1103 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1104 obj->buffer.length == sizeof(u32)) {
1105 devices = *((u32 *) obj->buffer.pointer);
1115 static int __devinit acer_platform_probe(struct platform_device *device)
1119 if (has_cap(ACER_CAP_MAILLED)) {
1120 err = acer_led_init(&device->dev);
1125 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1126 err = acer_backlight_init(&device->dev);
1128 goto error_brightness;
1131 err = acer_rfkill_init(&device->dev);
1138 if (has_cap(ACER_CAP_BRIGHTNESS))
1139 acer_backlight_exit();
1141 if (has_cap(ACER_CAP_MAILLED))
1147 static int acer_platform_remove(struct platform_device *device)
1149 if (has_cap(ACER_CAP_MAILLED))
1151 if (has_cap(ACER_CAP_BRIGHTNESS))
1152 acer_backlight_exit();
1158 static int acer_platform_suspend(struct platform_device *dev,
1162 struct acer_data *data = &interface->data;
1167 if (has_cap(ACER_CAP_MAILLED)) {
1168 get_u32(&value, ACER_CAP_MAILLED);
1169 data->mailled = value;
1172 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1173 get_u32(&value, ACER_CAP_BRIGHTNESS);
1174 data->brightness = value;
1180 static int acer_platform_resume(struct platform_device *device)
1182 struct acer_data *data = &interface->data;
1187 if (has_cap(ACER_CAP_MAILLED))
1188 set_u32(data->mailled, ACER_CAP_MAILLED);
1190 if (has_cap(ACER_CAP_BRIGHTNESS))
1191 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1196 static struct platform_driver acer_platform_driver = {
1199 .owner = THIS_MODULE,
1201 .probe = acer_platform_probe,
1202 .remove = acer_platform_remove,
1203 .suspend = acer_platform_suspend,
1204 .resume = acer_platform_resume,
1207 static struct platform_device *acer_platform_device;
1209 static int remove_sysfs(struct platform_device *device)
1211 if (has_cap(ACER_CAP_THREEG))
1212 device_remove_file(&device->dev, &dev_attr_threeg);
1214 device_remove_file(&device->dev, &dev_attr_interface);
1219 static int create_sysfs(void)
1221 int retval = -ENOMEM;
1223 if (has_cap(ACER_CAP_THREEG)) {
1224 retval = device_create_file(&acer_platform_device->dev,
1230 retval = device_create_file(&acer_platform_device->dev,
1231 &dev_attr_interface);
1238 remove_sysfs(acer_platform_device);
1242 static void remove_debugfs(void)
1244 debugfs_remove(interface->debug.devices);
1245 debugfs_remove(interface->debug.root);
1248 static int create_debugfs(void)
1250 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1251 if (!interface->debug.root) {
1252 printk(ACER_ERR "Failed to create debugfs directory");
1256 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1257 interface->debug.root,
1258 &interface->debug.wmid_devices);
1259 if (!interface->debug.devices)
1269 static int __init acer_wmi_init(void)
1273 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1275 if (dmi_check_system(acer_blacklist)) {
1276 printk(ACER_INFO "Blacklisted hardware detected - "
1284 * Detect which ACPI-WMI interface we're using.
1286 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1287 interface = &AMW0_V2_interface;
1289 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1290 interface = &wmid_interface;
1292 if (wmi_has_guid(WMID_GUID2) && interface) {
1293 if (ACPI_FAILURE(WMID_set_capabilities())) {
1294 printk(ACER_ERR "Unable to detect available WMID "
1298 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1299 printk(ACER_ERR "No WMID device detection method found\n");
1303 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1304 interface = &AMW0_interface;
1306 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1307 printk(ACER_ERR "Unable to detect available AMW0 "
1313 if (wmi_has_guid(AMW0_GUID1))
1314 AMW0_find_mailled();
1317 printk(ACER_INFO "No or unsupported WMI interface, unable to "
1324 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1325 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1326 printk(ACER_INFO "Brightness must be controlled by "
1327 "generic video driver\n");
1330 err = platform_driver_register(&acer_platform_driver);
1332 printk(ACER_ERR "Unable to register platform driver.\n");
1333 goto error_platform_register;
1336 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1337 if (!acer_platform_device) {
1339 goto error_device_alloc;
1342 err = platform_device_add(acer_platform_device);
1344 goto error_device_add;
1346 err = create_sysfs();
1348 goto error_create_sys;
1350 if (wmi_has_guid(WMID_GUID2)) {
1351 interface->debug.wmid_devices = get_wmid_devices();
1352 err = create_debugfs();
1354 goto error_create_debugfs;
1357 /* Override any initial settings with values from the commandline */
1358 acer_commandline_init();
1362 error_create_debugfs:
1363 remove_sysfs(acer_platform_device);
1365 platform_device_del(acer_platform_device);
1367 platform_device_put(acer_platform_device);
1369 platform_driver_unregister(&acer_platform_driver);
1370 error_platform_register:
1374 static void __exit acer_wmi_exit(void)
1376 remove_sysfs(acer_platform_device);
1378 platform_device_unregister(acer_platform_device);
1379 platform_driver_unregister(&acer_platform_driver);
1381 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1385 module_init(acer_wmi_init);
1386 module_exit(acer_wmi_exit);