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>
40 #include <acpi/acpi_drivers.h>
42 MODULE_AUTHOR("Carlos Corbacho");
43 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
44 MODULE_LICENSE("GPL");
46 #define ACER_LOGPREFIX "acer-wmi: "
47 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
48 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
49 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
52 * The following defines quirks to get some specific functions to work
53 * which are known to not be supported over ACPI-WMI (such as the mail LED
54 * on WMID based Acer's)
64 * Meaning is unknown - this number is required for writing to ACPI for AMW0
65 * (it's also used in acerhk when directly accessing the BIOS)
67 #define ACER_AMW0_WRITE 0x9610
70 * Bit masks for the AMW0 interface
72 #define ACER_AMW0_WIRELESS_MASK 0x35
73 #define ACER_AMW0_BLUETOOTH_MASK 0x34
74 #define ACER_AMW0_MAILLED_MASK 0x31
77 * Method IDs for WMID interface
79 #define ACER_WMID_GET_WIRELESS_METHODID 1
80 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
81 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
82 #define ACER_WMID_SET_WIRELESS_METHODID 4
83 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
84 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
85 #define ACER_WMID_GET_THREEG_METHODID 10
86 #define ACER_WMID_SET_THREEG_METHODID 11
89 * Acer ACPI method GUIDs
91 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
92 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
93 #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
94 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
96 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
97 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
100 * Interface capability flags
102 #define ACER_CAP_MAILLED (1<<0)
103 #define ACER_CAP_WIRELESS (1<<1)
104 #define ACER_CAP_BLUETOOTH (1<<2)
105 #define ACER_CAP_BRIGHTNESS (1<<3)
106 #define ACER_CAP_THREEG (1<<4)
107 #define ACER_CAP_ANY (0xFFFFFFFF)
110 * Interface type flags
112 enum interface_flags {
118 #define ACER_DEFAULT_WIRELESS 0
119 #define ACER_DEFAULT_BLUETOOTH 0
120 #define ACER_DEFAULT_MAILLED 0
121 #define ACER_DEFAULT_THREEG 0
123 static int max_brightness = 0xF;
125 static int mailled = -1;
126 static int brightness = -1;
127 static int threeg = -1;
128 static int force_series;
130 module_param(mailled, int, 0444);
131 module_param(brightness, int, 0444);
132 module_param(threeg, int, 0444);
133 module_param(force_series, int, 0444);
134 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
135 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
136 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
137 MODULE_PARM_DESC(force_series, "Force a different laptop series");
147 struct dentry *devices;
151 static struct rfkill *wireless_rfkill;
152 static struct rfkill *bluetooth_rfkill;
154 /* Each low-level interface must define at least some of the following */
155 struct wmi_interface {
156 /* The WMI device type */
159 /* The capabilities this interface provides */
162 /* Private data for the current interface */
163 struct acer_data data;
165 /* debugfs entries associated with this interface */
166 struct acer_debug debug;
169 /* The static interface pointer, points to the currently detected interface */
170 static struct wmi_interface *interface;
173 * Embedded Controller quirks
174 * Some laptops require us to directly access the EC to either enable or query
175 * features that are not available through WMI.
185 static struct quirk_entry *quirks;
187 static void set_quirks(void)
193 interface->capability |= ACER_CAP_MAILLED;
195 if (quirks->brightness)
196 interface->capability |= ACER_CAP_BRIGHTNESS;
199 static int dmi_matched(const struct dmi_system_id *dmi)
201 quirks = dmi->driver_data;
205 static struct quirk_entry quirk_unknown = {
208 static struct quirk_entry quirk_acer_aspire_1520 = {
212 static struct quirk_entry quirk_acer_travelmate_2490 = {
216 /* This AMW0 laptop has no bluetooth */
217 static struct quirk_entry quirk_medion_md_98300 = {
221 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
225 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
226 static struct dmi_system_id __devinitdata acer_blacklist[] = {
228 .ident = "Acer Aspire One (SSD)",
230 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
231 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
235 .ident = "Acer Aspire One (HDD)",
237 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
238 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
244 static struct dmi_system_id acer_quirks[] = {
246 .callback = dmi_matched,
247 .ident = "Acer Aspire 1360",
249 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
250 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
252 .driver_data = &quirk_acer_aspire_1520,
255 .callback = dmi_matched,
256 .ident = "Acer Aspire 1520",
258 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
259 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
261 .driver_data = &quirk_acer_aspire_1520,
264 .callback = dmi_matched,
265 .ident = "Acer Aspire 3100",
267 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
268 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
270 .driver_data = &quirk_acer_travelmate_2490,
273 .callback = dmi_matched,
274 .ident = "Acer Aspire 3610",
276 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
277 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
279 .driver_data = &quirk_acer_travelmate_2490,
282 .callback = dmi_matched,
283 .ident = "Acer Aspire 5100",
285 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
286 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
288 .driver_data = &quirk_acer_travelmate_2490,
291 .callback = dmi_matched,
292 .ident = "Acer Aspire 5610",
294 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
295 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
297 .driver_data = &quirk_acer_travelmate_2490,
300 .callback = dmi_matched,
301 .ident = "Acer Aspire 5630",
303 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
304 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
306 .driver_data = &quirk_acer_travelmate_2490,
309 .callback = dmi_matched,
310 .ident = "Acer Aspire 5650",
312 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
313 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
315 .driver_data = &quirk_acer_travelmate_2490,
318 .callback = dmi_matched,
319 .ident = "Acer Aspire 5680",
321 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
322 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
324 .driver_data = &quirk_acer_travelmate_2490,
327 .callback = dmi_matched,
328 .ident = "Acer Aspire 9110",
330 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
331 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
333 .driver_data = &quirk_acer_travelmate_2490,
336 .callback = dmi_matched,
337 .ident = "Acer TravelMate 2490",
339 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
340 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
342 .driver_data = &quirk_acer_travelmate_2490,
345 .callback = dmi_matched,
346 .ident = "Acer TravelMate 4200",
348 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
349 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
351 .driver_data = &quirk_acer_travelmate_2490,
354 .callback = dmi_matched,
355 .ident = "Fujitsu Siemens Amilo Li 1718",
357 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
358 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
360 .driver_data = &quirk_fujitsu_amilo_li_1718,
363 .callback = dmi_matched,
364 .ident = "Medion MD 98300",
366 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
367 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
369 .driver_data = &quirk_medion_md_98300,
374 /* Find which quirks are needed for a particular vendor/ model pair */
375 static void find_quirks(void)
378 dmi_check_system(acer_quirks);
379 } else if (force_series == 2490) {
380 quirks = &quirk_acer_travelmate_2490;
384 quirks = &quirk_unknown;
390 * General interface convenience methods
393 static bool has_cap(u32 cap)
395 if ((interface->capability & cap) != 0)
402 * AMW0 (V1) interface
419 static acpi_status wmab_execute(struct wmab_args *regbuf,
420 struct acpi_buffer *result)
422 struct acpi_buffer input;
424 input.length = sizeof(struct wmab_args);
425 input.pointer = (u8 *)regbuf;
427 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
432 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
433 struct wmi_interface *iface)
439 case ACER_CAP_MAILLED:
440 switch (quirks->mailled) {
442 err = ec_read(0xA, &result);
445 *value = (result >> 7) & 0x1;
449 case ACER_CAP_WIRELESS:
450 switch (quirks->wireless) {
452 err = ec_read(0x7B, &result);
455 *value = result & 0x1;
458 err = ec_read(0x71, &result);
461 *value = result & 0x1;
464 err = ec_read(0xA, &result);
467 *value = (result >> 2) & 0x1;
471 case ACER_CAP_BLUETOOTH:
472 switch (quirks->bluetooth) {
474 err = ec_read(0xA, &result);
477 *value = (result >> 4) & 0x1;
481 case ACER_CAP_BRIGHTNESS:
482 switch (quirks->brightness) {
484 err = ec_read(0x83, &result);
497 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
499 struct wmab_args args;
501 args.eax = ACER_AMW0_WRITE;
502 args.ebx = value ? (1<<8) : 0;
503 args.ecx = args.edx = 0;
506 case ACER_CAP_MAILLED:
508 return AE_BAD_PARAMETER;
509 args.ebx |= ACER_AMW0_MAILLED_MASK;
511 case ACER_CAP_WIRELESS:
513 return AE_BAD_PARAMETER;
514 args.ebx |= ACER_AMW0_WIRELESS_MASK;
516 case ACER_CAP_BLUETOOTH:
518 return AE_BAD_PARAMETER;
519 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
521 case ACER_CAP_BRIGHTNESS:
522 if (value > max_brightness)
523 return AE_BAD_PARAMETER;
524 switch (quirks->brightness) {
526 return ec_write(0x83, value);
533 /* Actually do the set */
534 return wmab_execute(&args, NULL);
537 static acpi_status AMW0_find_mailled(void)
539 struct wmab_args args;
541 acpi_status status = AE_OK;
542 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
543 union acpi_object *obj;
546 args.ebx = args.ecx = args.edx = 0;
548 status = wmab_execute(&args, &out);
549 if (ACPI_FAILURE(status))
552 obj = (union acpi_object *) out.pointer;
553 if (obj && obj->type == ACPI_TYPE_BUFFER &&
554 obj->buffer.length == sizeof(struct wmab_ret)) {
555 ret = *((struct wmab_ret *) obj->buffer.pointer);
561 interface->capability |= ACER_CAP_MAILLED;
568 static acpi_status AMW0_set_capabilities(void)
570 struct wmab_args args;
572 acpi_status status = AE_OK;
573 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
574 union acpi_object *obj;
577 * On laptops with this strange GUID (non Acer), normal probing doesn't
580 if (wmi_has_guid(AMW0_GUID2)) {
581 interface->capability |= ACER_CAP_WIRELESS;
585 args.eax = ACER_AMW0_WRITE;
586 args.ecx = args.edx = 0;
588 args.ebx = 0xa2 << 8;
589 args.ebx |= ACER_AMW0_WIRELESS_MASK;
591 status = wmab_execute(&args, &out);
592 if (ACPI_FAILURE(status))
595 obj = (union acpi_object *) out.pointer;
596 if (obj && obj->type == ACPI_TYPE_BUFFER &&
597 obj->buffer.length == sizeof(struct wmab_ret)) {
598 ret = *((struct wmab_ret *) obj->buffer.pointer);
604 interface->capability |= ACER_CAP_WIRELESS;
607 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
609 status = wmab_execute(&args, &out);
610 if (ACPI_FAILURE(status))
613 obj = (union acpi_object *) out.pointer;
614 if (obj && obj->type == ACPI_TYPE_BUFFER
615 && obj->buffer.length == sizeof(struct wmab_ret)) {
616 ret = *((struct wmab_ret *) obj->buffer.pointer);
622 interface->capability |= ACER_CAP_BLUETOOTH;
627 * This appears to be safe to enable, since all Wistron based laptops
628 * appear to use the same EC register for brightness, even if they
629 * differ for wireless, etc
631 if (quirks->brightness >= 0)
632 interface->capability |= ACER_CAP_BRIGHTNESS;
637 static struct wmi_interface AMW0_interface = {
641 static struct wmi_interface AMW0_V2_interface = {
642 .type = ACER_AMW0_V2,
646 * New interface (The WMID interface)
649 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
651 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
652 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
653 union acpi_object *obj;
657 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
659 if (ACPI_FAILURE(status))
662 obj = (union acpi_object *) result.pointer;
663 if (obj && obj->type == ACPI_TYPE_BUFFER &&
664 obj->buffer.length == sizeof(u32)) {
665 tmp = *((u32 *) obj->buffer.pointer);
673 kfree(result.pointer);
678 static acpi_status WMID_get_u32(u32 *value, u32 cap,
679 struct wmi_interface *iface)
683 u32 result, method_id = 0;
686 case ACER_CAP_WIRELESS:
687 method_id = ACER_WMID_GET_WIRELESS_METHODID;
689 case ACER_CAP_BLUETOOTH:
690 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
692 case ACER_CAP_BRIGHTNESS:
693 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
695 case ACER_CAP_THREEG:
696 method_id = ACER_WMID_GET_THREEG_METHODID;
698 case ACER_CAP_MAILLED:
699 if (quirks->mailled == 1) {
707 status = WMI_execute_u32(method_id, 0, &result);
709 if (ACPI_SUCCESS(status))
715 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
721 case ACER_CAP_BRIGHTNESS:
722 if (value > max_brightness)
723 return AE_BAD_PARAMETER;
724 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
726 case ACER_CAP_WIRELESS:
728 return AE_BAD_PARAMETER;
729 method_id = ACER_WMID_SET_WIRELESS_METHODID;
731 case ACER_CAP_BLUETOOTH:
733 return AE_BAD_PARAMETER;
734 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
736 case ACER_CAP_THREEG:
738 return AE_BAD_PARAMETER;
739 method_id = ACER_WMID_SET_THREEG_METHODID;
741 case ACER_CAP_MAILLED:
743 return AE_BAD_PARAMETER;
744 if (quirks->mailled == 1) {
745 param = value ? 0x92 : 0x93;
747 i8042_command(¶m, 0x1059);
755 return WMI_execute_u32(method_id, (u32)value, NULL);
758 static acpi_status WMID_set_capabilities(void)
760 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
761 union acpi_object *obj;
765 status = wmi_query_block(WMID_GUID2, 1, &out);
766 if (ACPI_FAILURE(status))
769 obj = (union acpi_object *) out.pointer;
770 if (obj && obj->type == ACPI_TYPE_BUFFER &&
771 obj->buffer.length == sizeof(u32)) {
772 devices = *((u32 *) obj->buffer.pointer);
777 /* Not sure on the meaning of the relevant bits yet to detect these */
778 interface->capability |= ACER_CAP_WIRELESS;
779 interface->capability |= ACER_CAP_THREEG;
781 /* WMID always provides brightness methods */
782 interface->capability |= ACER_CAP_BRIGHTNESS;
785 interface->capability |= ACER_CAP_BLUETOOTH;
787 if (!(devices & 0x20))
788 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_device *bd;
927 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
929 printk(ACER_ERR "Could not register Acer backlight device\n");
930 acer_backlight_device = NULL;
934 acer_backlight_device = bd;
936 bd->props.power = FB_BLANK_UNBLANK;
937 bd->props.brightness = max_brightness;
938 bd->props.max_brightness = max_brightness;
939 backlight_update_status(bd);
943 static void acer_backlight_exit(void)
945 backlight_device_unregister(acer_backlight_device);
951 static void acer_rfkill_update(struct work_struct *ignored);
952 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
953 static void acer_rfkill_update(struct work_struct *ignored)
958 status = get_u32(&state, ACER_CAP_WIRELESS);
959 if (ACPI_SUCCESS(status))
960 rfkill_set_sw_state(wireless_rfkill, !state);
962 if (has_cap(ACER_CAP_BLUETOOTH)) {
963 status = get_u32(&state, ACER_CAP_BLUETOOTH);
964 if (ACPI_SUCCESS(status))
965 rfkill_set_sw_state(bluetooth_rfkill, !state);
968 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
971 static int acer_rfkill_set(void *data, bool blocked)
974 u32 cap = (unsigned long)data;
975 status = set_u32(!blocked, cap);
976 if (ACPI_FAILURE(status))
981 static const struct rfkill_ops acer_rfkill_ops = {
982 .set_block = acer_rfkill_set,
985 static struct rfkill *acer_rfkill_register(struct device *dev,
986 enum rfkill_type type,
990 struct rfkill *rfkill_dev;
992 rfkill_dev = rfkill_alloc(name, dev, type,
994 (void *)(unsigned long)cap);
996 return ERR_PTR(-ENOMEM);
998 err = rfkill_register(rfkill_dev);
1000 rfkill_destroy(rfkill_dev);
1001 return ERR_PTR(err);
1006 static int acer_rfkill_init(struct device *dev)
1008 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1009 "acer-wireless", ACER_CAP_WIRELESS);
1010 if (IS_ERR(wireless_rfkill))
1011 return PTR_ERR(wireless_rfkill);
1013 if (has_cap(ACER_CAP_BLUETOOTH)) {
1014 bluetooth_rfkill = acer_rfkill_register(dev,
1015 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1016 ACER_CAP_BLUETOOTH);
1017 if (IS_ERR(bluetooth_rfkill)) {
1018 rfkill_unregister(wireless_rfkill);
1019 rfkill_destroy(wireless_rfkill);
1020 return PTR_ERR(bluetooth_rfkill);
1024 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1029 static void acer_rfkill_exit(void)
1031 cancel_delayed_work_sync(&acer_rfkill_work);
1033 rfkill_unregister(wireless_rfkill);
1034 rfkill_destroy(wireless_rfkill);
1036 if (has_cap(ACER_CAP_BLUETOOTH)) {
1037 rfkill_unregister(bluetooth_rfkill);
1038 rfkill_destroy(bluetooth_rfkill);
1046 static ssize_t show_bool_threeg(struct device *dev,
1047 struct device_attribute *attr, char *buf)
1050 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1051 if (ACPI_SUCCESS(status))
1052 return sprintf(buf, "%u\n", result);
1053 return sprintf(buf, "Read error\n");
1056 static ssize_t set_bool_threeg(struct device *dev,
1057 struct device_attribute *attr, const char *buf, size_t count)
1059 u32 tmp = simple_strtoul(buf, NULL, 10);
1060 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1061 if (ACPI_FAILURE(status))
1065 static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1068 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1071 switch (interface->type) {
1073 return sprintf(buf, "AMW0\n");
1075 return sprintf(buf, "AMW0 v2\n");
1077 return sprintf(buf, "WMID\n");
1079 return sprintf(buf, "Error!\n");
1083 static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1084 show_interface, NULL);
1089 static u32 get_wmid_devices(void)
1091 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1092 union acpi_object *obj;
1095 status = wmi_query_block(WMID_GUID2, 1, &out);
1096 if (ACPI_FAILURE(status))
1099 obj = (union acpi_object *) out.pointer;
1100 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1101 obj->buffer.length == sizeof(u32)) {
1102 return *((u32 *) obj->buffer.pointer);
1111 static int __devinit acer_platform_probe(struct platform_device *device)
1115 if (has_cap(ACER_CAP_MAILLED)) {
1116 err = acer_led_init(&device->dev);
1121 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1122 err = acer_backlight_init(&device->dev);
1124 goto error_brightness;
1127 err = acer_rfkill_init(&device->dev);
1134 if (has_cap(ACER_CAP_BRIGHTNESS))
1135 acer_backlight_exit();
1137 if (has_cap(ACER_CAP_MAILLED))
1143 static int acer_platform_remove(struct platform_device *device)
1145 if (has_cap(ACER_CAP_MAILLED))
1147 if (has_cap(ACER_CAP_BRIGHTNESS))
1148 acer_backlight_exit();
1154 static int acer_platform_suspend(struct platform_device *dev,
1158 struct acer_data *data = &interface->data;
1163 if (has_cap(ACER_CAP_MAILLED)) {
1164 get_u32(&value, ACER_CAP_MAILLED);
1165 data->mailled = value;
1168 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1169 get_u32(&value, ACER_CAP_BRIGHTNESS);
1170 data->brightness = value;
1176 static int acer_platform_resume(struct platform_device *device)
1178 struct acer_data *data = &interface->data;
1183 if (has_cap(ACER_CAP_MAILLED))
1184 set_u32(data->mailled, ACER_CAP_MAILLED);
1186 if (has_cap(ACER_CAP_BRIGHTNESS))
1187 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1192 static struct platform_driver acer_platform_driver = {
1195 .owner = THIS_MODULE,
1197 .probe = acer_platform_probe,
1198 .remove = acer_platform_remove,
1199 .suspend = acer_platform_suspend,
1200 .resume = acer_platform_resume,
1203 static struct platform_device *acer_platform_device;
1205 static int remove_sysfs(struct platform_device *device)
1207 if (has_cap(ACER_CAP_THREEG))
1208 device_remove_file(&device->dev, &dev_attr_threeg);
1210 device_remove_file(&device->dev, &dev_attr_interface);
1215 static int create_sysfs(void)
1217 int retval = -ENOMEM;
1219 if (has_cap(ACER_CAP_THREEG)) {
1220 retval = device_create_file(&acer_platform_device->dev,
1226 retval = device_create_file(&acer_platform_device->dev,
1227 &dev_attr_interface);
1234 remove_sysfs(acer_platform_device);
1238 static void remove_debugfs(void)
1240 debugfs_remove(interface->debug.devices);
1241 debugfs_remove(interface->debug.root);
1244 static int create_debugfs(void)
1246 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1247 if (!interface->debug.root) {
1248 printk(ACER_ERR "Failed to create debugfs directory");
1252 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1253 interface->debug.root,
1254 &interface->debug.wmid_devices);
1255 if (!interface->debug.devices)
1265 static int __init acer_wmi_init(void)
1269 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1271 if (dmi_check_system(acer_blacklist)) {
1272 printk(ACER_INFO "Blacklisted hardware detected - "
1280 * Detect which ACPI-WMI interface we're using.
1282 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1283 interface = &AMW0_V2_interface;
1285 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1286 interface = &wmid_interface;
1288 if (wmi_has_guid(WMID_GUID2) && interface) {
1289 if (ACPI_FAILURE(WMID_set_capabilities())) {
1290 printk(ACER_ERR "Unable to detect available WMID "
1294 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1295 printk(ACER_ERR "No WMID device detection method found\n");
1299 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1300 interface = &AMW0_interface;
1302 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1303 printk(ACER_ERR "Unable to detect available AMW0 "
1309 if (wmi_has_guid(AMW0_GUID1))
1310 AMW0_find_mailled();
1313 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1320 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1321 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1322 printk(ACER_INFO "Brightness must be controlled by "
1323 "generic video driver\n");
1326 if (platform_driver_register(&acer_platform_driver)) {
1327 printk(ACER_ERR "Unable to register platform driver.\n");
1328 goto error_platform_register;
1330 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1331 platform_device_add(acer_platform_device);
1333 err = create_sysfs();
1337 if (wmi_has_guid(WMID_GUID2)) {
1338 interface->debug.wmid_devices = get_wmid_devices();
1339 err = create_debugfs();
1344 /* Override any initial settings with values from the commandline */
1345 acer_commandline_init();
1349 error_platform_register:
1353 static void __exit acer_wmi_exit(void)
1355 remove_sysfs(acer_platform_device);
1357 platform_device_del(acer_platform_device);
1358 platform_driver_unregister(&acer_platform_driver);
1360 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1364 module_init(acer_wmi_init);
1365 module_exit(acer_wmi_exit);