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
53 * The following defines quirks to get some specific functions to work
54 * which are known to not be supported over ACPI-WMI (such as the mail LED
55 * on WMID based Acer's)
65 * Meaning is unknown - this number is required for writing to ACPI for AMW0
66 * (it's also used in acerhk when directly accessing the BIOS)
68 #define ACER_AMW0_WRITE 0x9610
71 * Bit masks for the AMW0 interface
73 #define ACER_AMW0_WIRELESS_MASK 0x35
74 #define ACER_AMW0_BLUETOOTH_MASK 0x34
75 #define ACER_AMW0_MAILLED_MASK 0x31
78 * Method IDs for WMID interface
80 #define ACER_WMID_GET_WIRELESS_METHODID 1
81 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
82 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
83 #define ACER_WMID_SET_WIRELESS_METHODID 4
84 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
85 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
86 #define ACER_WMID_GET_THREEG_METHODID 10
87 #define ACER_WMID_SET_THREEG_METHODID 11
90 * Acer ACPI method GUIDs
92 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
93 #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
94 #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
95 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
97 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
98 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
101 * Interface capability flags
103 #define ACER_CAP_MAILLED (1<<0)
104 #define ACER_CAP_WIRELESS (1<<1)
105 #define ACER_CAP_BLUETOOTH (1<<2)
106 #define ACER_CAP_BRIGHTNESS (1<<3)
107 #define ACER_CAP_THREEG (1<<4)
108 #define ACER_CAP_ANY (0xFFFFFFFF)
111 * Interface type flags
113 enum interface_flags {
119 #define ACER_DEFAULT_WIRELESS 0
120 #define ACER_DEFAULT_BLUETOOTH 0
121 #define ACER_DEFAULT_MAILLED 0
122 #define ACER_DEFAULT_THREEG 0
124 static int max_brightness = 0xF;
126 static int mailled = -1;
127 static int brightness = -1;
128 static int threeg = -1;
129 static int force_series;
131 module_param(mailled, int, 0444);
132 module_param(brightness, int, 0444);
133 module_param(threeg, int, 0444);
134 module_param(force_series, int, 0444);
135 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
136 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
137 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
138 MODULE_PARM_DESC(force_series, "Force a different laptop series");
148 struct dentry *devices;
152 static struct rfkill *wireless_rfkill;
153 static struct rfkill *bluetooth_rfkill;
155 /* Each low-level interface must define at least some of the following */
156 struct wmi_interface {
157 /* The WMI device type */
160 /* The capabilities this interface provides */
163 /* Private data for the current interface */
164 struct acer_data data;
166 /* debugfs entries associated with this interface */
167 struct acer_debug debug;
170 /* The static interface pointer, points to the currently detected interface */
171 static struct wmi_interface *interface;
174 * Embedded Controller quirks
175 * Some laptops require us to directly access the EC to either enable or query
176 * features that are not available through WMI.
186 static struct quirk_entry *quirks;
188 static void set_quirks(void)
194 interface->capability |= ACER_CAP_MAILLED;
196 if (quirks->brightness)
197 interface->capability |= ACER_CAP_BRIGHTNESS;
200 static int dmi_matched(const struct dmi_system_id *dmi)
202 quirks = dmi->driver_data;
206 static struct quirk_entry quirk_unknown = {
209 static struct quirk_entry quirk_acer_aspire_1520 = {
213 static struct quirk_entry quirk_acer_travelmate_2490 = {
217 /* This AMW0 laptop has no bluetooth */
218 static struct quirk_entry quirk_medion_md_98300 = {
222 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
226 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
227 static struct dmi_system_id __devinitdata acer_blacklist[] = {
229 .ident = "Acer Aspire One (SSD)",
231 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
232 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
236 .ident = "Acer Aspire One (HDD)",
238 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
239 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
245 static struct dmi_system_id acer_quirks[] = {
247 .callback = dmi_matched,
248 .ident = "Acer Aspire 1360",
250 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
251 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
253 .driver_data = &quirk_acer_aspire_1520,
256 .callback = dmi_matched,
257 .ident = "Acer Aspire 1520",
259 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
260 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
262 .driver_data = &quirk_acer_aspire_1520,
265 .callback = dmi_matched,
266 .ident = "Acer Aspire 3100",
268 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
269 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
271 .driver_data = &quirk_acer_travelmate_2490,
274 .callback = dmi_matched,
275 .ident = "Acer Aspire 3610",
277 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
278 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
280 .driver_data = &quirk_acer_travelmate_2490,
283 .callback = dmi_matched,
284 .ident = "Acer Aspire 5100",
286 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
287 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
289 .driver_data = &quirk_acer_travelmate_2490,
292 .callback = dmi_matched,
293 .ident = "Acer Aspire 5610",
295 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
296 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
298 .driver_data = &quirk_acer_travelmate_2490,
301 .callback = dmi_matched,
302 .ident = "Acer Aspire 5630",
304 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
305 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
307 .driver_data = &quirk_acer_travelmate_2490,
310 .callback = dmi_matched,
311 .ident = "Acer Aspire 5650",
313 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
314 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
316 .driver_data = &quirk_acer_travelmate_2490,
319 .callback = dmi_matched,
320 .ident = "Acer Aspire 5680",
322 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
323 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
325 .driver_data = &quirk_acer_travelmate_2490,
328 .callback = dmi_matched,
329 .ident = "Acer Aspire 9110",
331 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
332 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
334 .driver_data = &quirk_acer_travelmate_2490,
337 .callback = dmi_matched,
338 .ident = "Acer TravelMate 2490",
340 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
341 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
343 .driver_data = &quirk_acer_travelmate_2490,
346 .callback = dmi_matched,
347 .ident = "Acer TravelMate 4200",
349 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
350 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
352 .driver_data = &quirk_acer_travelmate_2490,
355 .callback = dmi_matched,
356 .ident = "Fujitsu Siemens Amilo Li 1718",
358 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
359 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
361 .driver_data = &quirk_fujitsu_amilo_li_1718,
364 .callback = dmi_matched,
365 .ident = "Medion MD 98300",
367 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
368 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
370 .driver_data = &quirk_medion_md_98300,
375 /* Find which quirks are needed for a particular vendor/ model pair */
376 static void find_quirks(void)
379 dmi_check_system(acer_quirks);
380 } else if (force_series == 2490) {
381 quirks = &quirk_acer_travelmate_2490;
385 quirks = &quirk_unknown;
391 * General interface convenience methods
394 static bool has_cap(u32 cap)
396 if ((interface->capability & cap) != 0)
403 * AMW0 (V1) interface
420 static acpi_status wmab_execute(struct wmab_args *regbuf,
421 struct acpi_buffer *result)
423 struct acpi_buffer input;
425 input.length = sizeof(struct wmab_args);
426 input.pointer = (u8 *)regbuf;
428 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
433 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
434 struct wmi_interface *iface)
440 case ACER_CAP_MAILLED:
441 switch (quirks->mailled) {
443 err = ec_read(0xA, &result);
446 *value = (result >> 7) & 0x1;
450 case ACER_CAP_WIRELESS:
451 switch (quirks->wireless) {
453 err = ec_read(0x7B, &result);
456 *value = result & 0x1;
459 err = ec_read(0x71, &result);
462 *value = result & 0x1;
465 err = ec_read(0xA, &result);
468 *value = (result >> 2) & 0x1;
472 case ACER_CAP_BLUETOOTH:
473 switch (quirks->bluetooth) {
475 err = ec_read(0xA, &result);
478 *value = (result >> 4) & 0x1;
482 case ACER_CAP_BRIGHTNESS:
483 switch (quirks->brightness) {
485 err = ec_read(0x83, &result);
498 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
500 struct wmab_args args;
502 args.eax = ACER_AMW0_WRITE;
503 args.ebx = value ? (1<<8) : 0;
504 args.ecx = args.edx = 0;
507 case ACER_CAP_MAILLED:
509 return AE_BAD_PARAMETER;
510 args.ebx |= ACER_AMW0_MAILLED_MASK;
512 case ACER_CAP_WIRELESS:
514 return AE_BAD_PARAMETER;
515 args.ebx |= ACER_AMW0_WIRELESS_MASK;
517 case ACER_CAP_BLUETOOTH:
519 return AE_BAD_PARAMETER;
520 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
522 case ACER_CAP_BRIGHTNESS:
523 if (value > max_brightness)
524 return AE_BAD_PARAMETER;
525 switch (quirks->brightness) {
527 return ec_write(0x83, value);
534 /* Actually do the set */
535 return wmab_execute(&args, NULL);
538 static acpi_status AMW0_find_mailled(void)
540 struct wmab_args args;
542 acpi_status status = AE_OK;
543 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
544 union acpi_object *obj;
547 args.ebx = args.ecx = args.edx = 0;
549 status = wmab_execute(&args, &out);
550 if (ACPI_FAILURE(status))
553 obj = (union acpi_object *) out.pointer;
554 if (obj && obj->type == ACPI_TYPE_BUFFER &&
555 obj->buffer.length == sizeof(struct wmab_ret)) {
556 ret = *((struct wmab_ret *) obj->buffer.pointer);
562 interface->capability |= ACER_CAP_MAILLED;
569 static acpi_status AMW0_set_capabilities(void)
571 struct wmab_args args;
573 acpi_status status = AE_OK;
574 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
575 union acpi_object *obj;
578 * On laptops with this strange GUID (non Acer), normal probing doesn't
581 if (wmi_has_guid(AMW0_GUID2)) {
582 interface->capability |= ACER_CAP_WIRELESS;
586 args.eax = ACER_AMW0_WRITE;
587 args.ecx = args.edx = 0;
589 args.ebx = 0xa2 << 8;
590 args.ebx |= ACER_AMW0_WIRELESS_MASK;
592 status = wmab_execute(&args, &out);
593 if (ACPI_FAILURE(status))
596 obj = (union acpi_object *) out.pointer;
597 if (obj && obj->type == ACPI_TYPE_BUFFER &&
598 obj->buffer.length == sizeof(struct wmab_ret)) {
599 ret = *((struct wmab_ret *) obj->buffer.pointer);
605 interface->capability |= ACER_CAP_WIRELESS;
608 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
610 status = wmab_execute(&args, &out);
611 if (ACPI_FAILURE(status))
614 obj = (union acpi_object *) out.pointer;
615 if (obj && obj->type == ACPI_TYPE_BUFFER
616 && obj->buffer.length == sizeof(struct wmab_ret)) {
617 ret = *((struct wmab_ret *) obj->buffer.pointer);
623 interface->capability |= ACER_CAP_BLUETOOTH;
628 * This appears to be safe to enable, since all Wistron based laptops
629 * appear to use the same EC register for brightness, even if they
630 * differ for wireless, etc
632 if (quirks->brightness >= 0)
633 interface->capability |= ACER_CAP_BRIGHTNESS;
638 static struct wmi_interface AMW0_interface = {
642 static struct wmi_interface AMW0_V2_interface = {
643 .type = ACER_AMW0_V2,
647 * New interface (The WMID interface)
650 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
652 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
653 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
654 union acpi_object *obj;
658 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
660 if (ACPI_FAILURE(status))
663 obj = (union acpi_object *) result.pointer;
664 if (obj && obj->type == ACPI_TYPE_BUFFER &&
665 obj->buffer.length == sizeof(u32)) {
666 tmp = *((u32 *) obj->buffer.pointer);
674 kfree(result.pointer);
679 static acpi_status WMID_get_u32(u32 *value, u32 cap,
680 struct wmi_interface *iface)
684 u32 result, method_id = 0;
687 case ACER_CAP_WIRELESS:
688 method_id = ACER_WMID_GET_WIRELESS_METHODID;
690 case ACER_CAP_BLUETOOTH:
691 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
693 case ACER_CAP_BRIGHTNESS:
694 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
696 case ACER_CAP_THREEG:
697 method_id = ACER_WMID_GET_THREEG_METHODID;
699 case ACER_CAP_MAILLED:
700 if (quirks->mailled == 1) {
708 status = WMI_execute_u32(method_id, 0, &result);
710 if (ACPI_SUCCESS(status))
716 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
722 case ACER_CAP_BRIGHTNESS:
723 if (value > max_brightness)
724 return AE_BAD_PARAMETER;
725 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
727 case ACER_CAP_WIRELESS:
729 return AE_BAD_PARAMETER;
730 method_id = ACER_WMID_SET_WIRELESS_METHODID;
732 case ACER_CAP_BLUETOOTH:
734 return AE_BAD_PARAMETER;
735 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
737 case ACER_CAP_THREEG:
739 return AE_BAD_PARAMETER;
740 method_id = ACER_WMID_SET_THREEG_METHODID;
742 case ACER_CAP_MAILLED:
744 return AE_BAD_PARAMETER;
745 if (quirks->mailled == 1) {
746 param = value ? 0x92 : 0x93;
748 i8042_command(¶m, 0x1059);
756 return WMI_execute_u32(method_id, (u32)value, NULL);
759 static acpi_status WMID_set_capabilities(void)
761 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
762 union acpi_object *obj;
766 status = wmi_query_block(WMID_GUID2, 1, &out);
767 if (ACPI_FAILURE(status))
770 obj = (union acpi_object *) out.pointer;
771 if (obj && obj->type == ACPI_TYPE_BUFFER &&
772 obj->buffer.length == sizeof(u32)) {
773 devices = *((u32 *) obj->buffer.pointer);
778 /* Not sure on the meaning of the relevant bits yet to detect these */
779 interface->capability |= ACER_CAP_WIRELESS;
780 interface->capability |= ACER_CAP_THREEG;
782 /* WMID always provides brightness methods */
783 interface->capability |= ACER_CAP_BRIGHTNESS;
786 interface->capability |= ACER_CAP_BLUETOOTH;
788 if (!(devices & 0x20))
789 max_brightness = 0x9;
794 static struct wmi_interface wmid_interface = {
799 * Generic Device (interface-independent)
802 static acpi_status get_u32(u32 *value, u32 cap)
804 acpi_status status = AE_ERROR;
806 switch (interface->type) {
808 status = AMW0_get_u32(value, cap, interface);
811 if (cap == ACER_CAP_MAILLED) {
812 status = AMW0_get_u32(value, cap, interface);
816 status = WMID_get_u32(value, cap, interface);
823 static acpi_status set_u32(u32 value, u32 cap)
827 if (interface->capability & cap) {
828 switch (interface->type) {
830 return AMW0_set_u32(value, cap, interface);
832 if (cap == ACER_CAP_MAILLED)
833 return AMW0_set_u32(value, cap, interface);
836 * On some models, some WMID methods don't toggle
837 * properly. For those cases, we want to run the AMW0
838 * method afterwards to be certain we've really toggled
841 if (cap == ACER_CAP_WIRELESS ||
842 cap == ACER_CAP_BLUETOOTH) {
843 status = WMID_set_u32(value, cap, interface);
844 if (ACPI_FAILURE(status))
847 return AMW0_set_u32(value, cap, interface);
850 return WMID_set_u32(value, cap, interface);
852 return AE_BAD_PARAMETER;
855 return AE_BAD_PARAMETER;
858 static void __init acer_commandline_init(void)
861 * These will all fail silently if the value given is invalid, or the
862 * capability isn't available on the given interface
864 set_u32(mailled, ACER_CAP_MAILLED);
865 set_u32(threeg, ACER_CAP_THREEG);
866 set_u32(brightness, ACER_CAP_BRIGHTNESS);
870 * LED device (Mail LED only, no other LEDs known yet)
872 static void mail_led_set(struct led_classdev *led_cdev,
873 enum led_brightness value)
875 set_u32(value, ACER_CAP_MAILLED);
878 static struct led_classdev mail_led = {
879 .name = "acer-wmi::mail",
880 .brightness_set = mail_led_set,
883 static int __devinit acer_led_init(struct device *dev)
885 return led_classdev_register(dev, &mail_led);
888 static void acer_led_exit(void)
890 led_classdev_unregister(&mail_led);
896 static struct backlight_device *acer_backlight_device;
898 static int read_brightness(struct backlight_device *bd)
901 get_u32(&value, ACER_CAP_BRIGHTNESS);
905 static int update_bl_status(struct backlight_device *bd)
907 int intensity = bd->props.brightness;
909 if (bd->props.power != FB_BLANK_UNBLANK)
911 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
914 set_u32(intensity, ACER_CAP_BRIGHTNESS);
919 static struct backlight_ops acer_bl_ops = {
920 .get_brightness = read_brightness,
921 .update_status = update_bl_status,
924 static int __devinit acer_backlight_init(struct device *dev)
926 struct backlight_properties props;
927 struct backlight_device *bd;
929 memset(&props, 0, sizeof(struct backlight_properties));
930 props.max_brightness = max_brightness;
931 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
934 printk(ACER_ERR "Could not register Acer backlight device\n");
935 acer_backlight_device = NULL;
939 acer_backlight_device = bd;
941 bd->props.power = FB_BLANK_UNBLANK;
942 bd->props.brightness = read_brightness(bd);
943 backlight_update_status(bd);
947 static void acer_backlight_exit(void)
949 backlight_device_unregister(acer_backlight_device);
955 static void acer_rfkill_update(struct work_struct *ignored);
956 static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
957 static void acer_rfkill_update(struct work_struct *ignored)
962 status = get_u32(&state, ACER_CAP_WIRELESS);
963 if (ACPI_SUCCESS(status))
964 rfkill_set_sw_state(wireless_rfkill, !state);
966 if (has_cap(ACER_CAP_BLUETOOTH)) {
967 status = get_u32(&state, ACER_CAP_BLUETOOTH);
968 if (ACPI_SUCCESS(status))
969 rfkill_set_sw_state(bluetooth_rfkill, !state);
972 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
975 static int acer_rfkill_set(void *data, bool blocked)
978 u32 cap = (unsigned long)data;
979 status = set_u32(!blocked, cap);
980 if (ACPI_FAILURE(status))
985 static const struct rfkill_ops acer_rfkill_ops = {
986 .set_block = acer_rfkill_set,
989 static struct rfkill *acer_rfkill_register(struct device *dev,
990 enum rfkill_type type,
994 struct rfkill *rfkill_dev;
996 rfkill_dev = rfkill_alloc(name, dev, type,
998 (void *)(unsigned long)cap);
1000 return ERR_PTR(-ENOMEM);
1002 err = rfkill_register(rfkill_dev);
1004 rfkill_destroy(rfkill_dev);
1005 return ERR_PTR(err);
1010 static int acer_rfkill_init(struct device *dev)
1012 wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1013 "acer-wireless", ACER_CAP_WIRELESS);
1014 if (IS_ERR(wireless_rfkill))
1015 return PTR_ERR(wireless_rfkill);
1017 if (has_cap(ACER_CAP_BLUETOOTH)) {
1018 bluetooth_rfkill = acer_rfkill_register(dev,
1019 RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1020 ACER_CAP_BLUETOOTH);
1021 if (IS_ERR(bluetooth_rfkill)) {
1022 rfkill_unregister(wireless_rfkill);
1023 rfkill_destroy(wireless_rfkill);
1024 return PTR_ERR(bluetooth_rfkill);
1028 schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1033 static void acer_rfkill_exit(void)
1035 cancel_delayed_work_sync(&acer_rfkill_work);
1037 rfkill_unregister(wireless_rfkill);
1038 rfkill_destroy(wireless_rfkill);
1040 if (has_cap(ACER_CAP_BLUETOOTH)) {
1041 rfkill_unregister(bluetooth_rfkill);
1042 rfkill_destroy(bluetooth_rfkill);
1050 static ssize_t show_bool_threeg(struct device *dev,
1051 struct device_attribute *attr, char *buf)
1054 acpi_status status = get_u32(&result, ACER_CAP_THREEG);
1055 if (ACPI_SUCCESS(status))
1056 return sprintf(buf, "%u\n", result);
1057 return sprintf(buf, "Read error\n");
1060 static ssize_t set_bool_threeg(struct device *dev,
1061 struct device_attribute *attr, const char *buf, size_t count)
1063 u32 tmp = simple_strtoul(buf, NULL, 10);
1064 acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1065 if (ACPI_FAILURE(status))
1069 static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
1072 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1075 switch (interface->type) {
1077 return sprintf(buf, "AMW0\n");
1079 return sprintf(buf, "AMW0 v2\n");
1081 return sprintf(buf, "WMID\n");
1083 return sprintf(buf, "Error!\n");
1087 static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
1088 show_interface, NULL);
1093 static u32 get_wmid_devices(void)
1095 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1096 union acpi_object *obj;
1099 status = wmi_query_block(WMID_GUID2, 1, &out);
1100 if (ACPI_FAILURE(status))
1103 obj = (union acpi_object *) out.pointer;
1104 if (obj && obj->type == ACPI_TYPE_BUFFER &&
1105 obj->buffer.length == sizeof(u32)) {
1106 return *((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_ERR "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 if (platform_driver_register(&acer_platform_driver)) {
1331 printk(ACER_ERR "Unable to register platform driver.\n");
1332 goto error_platform_register;
1334 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1335 platform_device_add(acer_platform_device);
1337 err = create_sysfs();
1341 if (wmi_has_guid(WMID_GUID2)) {
1342 interface->debug.wmid_devices = get_wmid_devices();
1343 err = create_debugfs();
1348 /* Override any initial settings with values from the commandline */
1349 acer_commandline_init();
1353 error_platform_register:
1357 static void __exit acer_wmi_exit(void)
1359 remove_sysfs(acer_platform_device);
1361 platform_device_del(acer_platform_device);
1362 platform_driver_unregister(&acer_platform_driver);
1364 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1368 module_init(acer_wmi_init);
1369 module_exit(acer_wmi_exit);