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");
99 /* Temporary workaround until the WMI sysfs interface goes in */
100 MODULE_ALIAS("dmi:*:*Acer*:*:");
103 * Interface capability flags
105 #define ACER_CAP_MAILLED (1<<0)
106 #define ACER_CAP_WIRELESS (1<<1)
107 #define ACER_CAP_BLUETOOTH (1<<2)
108 #define ACER_CAP_BRIGHTNESS (1<<3)
109 #define ACER_CAP_THREEG (1<<4)
110 #define ACER_CAP_ANY (0xFFFFFFFF)
113 * Interface type flags
115 enum interface_flags {
121 #define ACER_DEFAULT_WIRELESS 0
122 #define ACER_DEFAULT_BLUETOOTH 0
123 #define ACER_DEFAULT_MAILLED 0
124 #define ACER_DEFAULT_THREEG 0
126 static int max_brightness = 0xF;
128 static int mailled = -1;
129 static int brightness = -1;
130 static int threeg = -1;
131 static int force_series;
133 module_param(mailled, int, 0444);
134 module_param(brightness, int, 0444);
135 module_param(threeg, int, 0444);
136 module_param(force_series, int, 0444);
137 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
138 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
139 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
140 MODULE_PARM_DESC(force_series, "Force a different laptop series");
150 struct dentry *devices;
154 static struct rfkill *wireless_rfkill;
155 static struct rfkill *bluetooth_rfkill;
157 /* Each low-level interface must define at least some of the following */
158 struct wmi_interface {
159 /* The WMI device type */
162 /* The capabilities this interface provides */
165 /* Private data for the current interface */
166 struct acer_data data;
168 /* debugfs entries associated with this interface */
169 struct acer_debug debug;
172 /* The static interface pointer, points to the currently detected interface */
173 static struct wmi_interface *interface;
176 * Embedded Controller quirks
177 * Some laptops require us to directly access the EC to either enable or query
178 * features that are not available through WMI.
188 static struct quirk_entry *quirks;
190 static void set_quirks(void)
196 interface->capability |= ACER_CAP_MAILLED;
198 if (quirks->brightness)
199 interface->capability |= ACER_CAP_BRIGHTNESS;
202 static int dmi_matched(const struct dmi_system_id *dmi)
204 quirks = dmi->driver_data;
208 static struct quirk_entry quirk_unknown = {
211 static struct quirk_entry quirk_acer_aspire_1520 = {
215 static struct quirk_entry quirk_acer_travelmate_2490 = {
219 /* This AMW0 laptop has no bluetooth */
220 static struct quirk_entry quirk_medion_md_98300 = {
224 static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
228 /* The Aspire One has a dummy ACPI-WMI interface - disable it */
229 static struct dmi_system_id __devinitdata acer_blacklist[] = {
231 .ident = "Acer Aspire One (SSD)",
233 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
234 DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
238 .ident = "Acer Aspire One (HDD)",
240 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
241 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
247 static struct dmi_system_id acer_quirks[] = {
249 .callback = dmi_matched,
250 .ident = "Acer Aspire 1360",
252 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
253 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
255 .driver_data = &quirk_acer_aspire_1520,
258 .callback = dmi_matched,
259 .ident = "Acer Aspire 1520",
261 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
262 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
264 .driver_data = &quirk_acer_aspire_1520,
267 .callback = dmi_matched,
268 .ident = "Acer Aspire 3100",
270 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
271 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
273 .driver_data = &quirk_acer_travelmate_2490,
276 .callback = dmi_matched,
277 .ident = "Acer Aspire 3610",
279 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
280 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
282 .driver_data = &quirk_acer_travelmate_2490,
285 .callback = dmi_matched,
286 .ident = "Acer Aspire 5100",
288 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
289 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
291 .driver_data = &quirk_acer_travelmate_2490,
294 .callback = dmi_matched,
295 .ident = "Acer Aspire 5610",
297 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
298 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
300 .driver_data = &quirk_acer_travelmate_2490,
303 .callback = dmi_matched,
304 .ident = "Acer Aspire 5630",
306 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
307 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
309 .driver_data = &quirk_acer_travelmate_2490,
312 .callback = dmi_matched,
313 .ident = "Acer Aspire 5650",
315 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
316 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
318 .driver_data = &quirk_acer_travelmate_2490,
321 .callback = dmi_matched,
322 .ident = "Acer Aspire 5680",
324 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
325 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
327 .driver_data = &quirk_acer_travelmate_2490,
330 .callback = dmi_matched,
331 .ident = "Acer Aspire 9110",
333 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
334 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
336 .driver_data = &quirk_acer_travelmate_2490,
339 .callback = dmi_matched,
340 .ident = "Acer TravelMate 2490",
342 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
343 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
345 .driver_data = &quirk_acer_travelmate_2490,
348 .callback = dmi_matched,
349 .ident = "Acer TravelMate 4200",
351 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
352 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
354 .driver_data = &quirk_acer_travelmate_2490,
357 .callback = dmi_matched,
358 .ident = "Fujitsu Siemens Amilo Li 1718",
360 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
361 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
363 .driver_data = &quirk_fujitsu_amilo_li_1718,
366 .callback = dmi_matched,
367 .ident = "Medion MD 98300",
369 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
370 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
372 .driver_data = &quirk_medion_md_98300,
377 /* Find which quirks are needed for a particular vendor/ model pair */
378 static void find_quirks(void)
381 dmi_check_system(acer_quirks);
382 } else if (force_series == 2490) {
383 quirks = &quirk_acer_travelmate_2490;
387 quirks = &quirk_unknown;
393 * General interface convenience methods
396 static bool has_cap(u32 cap)
398 if ((interface->capability & cap) != 0)
405 * AMW0 (V1) interface
422 static acpi_status wmab_execute(struct wmab_args *regbuf,
423 struct acpi_buffer *result)
425 struct acpi_buffer input;
427 input.length = sizeof(struct wmab_args);
428 input.pointer = (u8 *)regbuf;
430 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
435 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
436 struct wmi_interface *iface)
442 case ACER_CAP_MAILLED:
443 switch (quirks->mailled) {
445 err = ec_read(0xA, &result);
448 *value = (result >> 7) & 0x1;
452 case ACER_CAP_WIRELESS:
453 switch (quirks->wireless) {
455 err = ec_read(0x7B, &result);
458 *value = result & 0x1;
461 err = ec_read(0x71, &result);
464 *value = result & 0x1;
467 err = ec_read(0xA, &result);
470 *value = (result >> 2) & 0x1;
474 case ACER_CAP_BLUETOOTH:
475 switch (quirks->bluetooth) {
477 err = ec_read(0xA, &result);
480 *value = (result >> 4) & 0x1;
484 case ACER_CAP_BRIGHTNESS:
485 switch (quirks->brightness) {
487 err = ec_read(0x83, &result);
500 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
502 struct wmab_args args;
504 args.eax = ACER_AMW0_WRITE;
505 args.ebx = value ? (1<<8) : 0;
506 args.ecx = args.edx = 0;
509 case ACER_CAP_MAILLED:
511 return AE_BAD_PARAMETER;
512 args.ebx |= ACER_AMW0_MAILLED_MASK;
514 case ACER_CAP_WIRELESS:
516 return AE_BAD_PARAMETER;
517 args.ebx |= ACER_AMW0_WIRELESS_MASK;
519 case ACER_CAP_BLUETOOTH:
521 return AE_BAD_PARAMETER;
522 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
524 case ACER_CAP_BRIGHTNESS:
525 if (value > max_brightness)
526 return AE_BAD_PARAMETER;
527 switch (quirks->brightness) {
529 return ec_write(0x83, value);
536 /* Actually do the set */
537 return wmab_execute(&args, NULL);
540 static acpi_status AMW0_find_mailled(void)
542 struct wmab_args args;
544 acpi_status status = AE_OK;
545 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
546 union acpi_object *obj;
549 args.ebx = args.ecx = args.edx = 0;
551 status = wmab_execute(&args, &out);
552 if (ACPI_FAILURE(status))
555 obj = (union acpi_object *) out.pointer;
556 if (obj && obj->type == ACPI_TYPE_BUFFER &&
557 obj->buffer.length == sizeof(struct wmab_ret)) {
558 ret = *((struct wmab_ret *) obj->buffer.pointer);
564 interface->capability |= ACER_CAP_MAILLED;
571 static acpi_status AMW0_set_capabilities(void)
573 struct wmab_args args;
575 acpi_status status = AE_OK;
576 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
577 union acpi_object *obj;
580 * On laptops with this strange GUID (non Acer), normal probing doesn't
583 if (wmi_has_guid(AMW0_GUID2)) {
584 interface->capability |= ACER_CAP_WIRELESS;
588 args.eax = ACER_AMW0_WRITE;
589 args.ecx = args.edx = 0;
591 args.ebx = 0xa2 << 8;
592 args.ebx |= ACER_AMW0_WIRELESS_MASK;
594 status = wmab_execute(&args, &out);
595 if (ACPI_FAILURE(status))
598 obj = (union acpi_object *) out.pointer;
599 if (obj && obj->type == ACPI_TYPE_BUFFER &&
600 obj->buffer.length == sizeof(struct wmab_ret)) {
601 ret = *((struct wmab_ret *) obj->buffer.pointer);
607 interface->capability |= ACER_CAP_WIRELESS;
610 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
612 status = wmab_execute(&args, &out);
613 if (ACPI_FAILURE(status))
616 obj = (union acpi_object *) out.pointer;
617 if (obj && obj->type == ACPI_TYPE_BUFFER
618 && obj->buffer.length == sizeof(struct wmab_ret)) {
619 ret = *((struct wmab_ret *) obj->buffer.pointer);
625 interface->capability |= ACER_CAP_BLUETOOTH;
630 * This appears to be safe to enable, since all Wistron based laptops
631 * appear to use the same EC register for brightness, even if they
632 * differ for wireless, etc
634 if (quirks->brightness >= 0)
635 interface->capability |= ACER_CAP_BRIGHTNESS;
640 static struct wmi_interface AMW0_interface = {
644 static struct wmi_interface AMW0_V2_interface = {
645 .type = ACER_AMW0_V2,
649 * New interface (The WMID interface)
652 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
654 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
655 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
656 union acpi_object *obj;
660 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
662 if (ACPI_FAILURE(status))
665 obj = (union acpi_object *) result.pointer;
666 if (obj && obj->type == ACPI_TYPE_BUFFER &&
667 obj->buffer.length == sizeof(u32)) {
668 tmp = *((u32 *) obj->buffer.pointer);
676 kfree(result.pointer);
681 static acpi_status WMID_get_u32(u32 *value, u32 cap,
682 struct wmi_interface *iface)
686 u32 result, method_id = 0;
689 case ACER_CAP_WIRELESS:
690 method_id = ACER_WMID_GET_WIRELESS_METHODID;
692 case ACER_CAP_BLUETOOTH:
693 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
695 case ACER_CAP_BRIGHTNESS:
696 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
698 case ACER_CAP_THREEG:
699 method_id = ACER_WMID_GET_THREEG_METHODID;
701 case ACER_CAP_MAILLED:
702 if (quirks->mailled == 1) {
710 status = WMI_execute_u32(method_id, 0, &result);
712 if (ACPI_SUCCESS(status))
718 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
724 case ACER_CAP_BRIGHTNESS:
725 if (value > max_brightness)
726 return AE_BAD_PARAMETER;
727 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
729 case ACER_CAP_WIRELESS:
731 return AE_BAD_PARAMETER;
732 method_id = ACER_WMID_SET_WIRELESS_METHODID;
734 case ACER_CAP_BLUETOOTH:
736 return AE_BAD_PARAMETER;
737 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
739 case ACER_CAP_THREEG:
741 return AE_BAD_PARAMETER;
742 method_id = ACER_WMID_SET_THREEG_METHODID;
744 case ACER_CAP_MAILLED:
746 return AE_BAD_PARAMETER;
747 if (quirks->mailled == 1) {
748 param = value ? 0x92 : 0x93;
750 i8042_command(¶m, 0x1059);
758 return WMI_execute_u32(method_id, (u32)value, NULL);
761 static acpi_status WMID_set_capabilities(void)
763 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
764 union acpi_object *obj;
768 status = wmi_query_block(WMID_GUID2, 1, &out);
769 if (ACPI_FAILURE(status))
772 obj = (union acpi_object *) out.pointer;
773 if (obj && obj->type == ACPI_TYPE_BUFFER &&
774 obj->buffer.length == sizeof(u32)) {
775 devices = *((u32 *) obj->buffer.pointer);
780 /* Not sure on the meaning of the relevant bits yet to detect these */
781 interface->capability |= ACER_CAP_WIRELESS;
782 interface->capability |= ACER_CAP_THREEG;
784 /* WMID always provides brightness methods */
785 interface->capability |= ACER_CAP_BRIGHTNESS;
788 interface->capability |= ACER_CAP_BLUETOOTH;
790 if (!(devices & 0x20))
791 max_brightness = 0x9;
796 static struct wmi_interface wmid_interface = {
801 * Generic Device (interface-independent)
804 static acpi_status get_u32(u32 *value, u32 cap)
806 acpi_status status = AE_ERROR;
808 switch (interface->type) {
810 status = AMW0_get_u32(value, cap, interface);
813 if (cap == ACER_CAP_MAILLED) {
814 status = AMW0_get_u32(value, cap, interface);
818 status = WMID_get_u32(value, cap, interface);
825 static acpi_status set_u32(u32 value, u32 cap)
829 if (interface->capability & cap) {
830 switch (interface->type) {
832 return AMW0_set_u32(value, cap, interface);
834 if (cap == ACER_CAP_MAILLED)
835 return AMW0_set_u32(value, cap, interface);
838 * On some models, some WMID methods don't toggle
839 * properly. For those cases, we want to run the AMW0
840 * method afterwards to be certain we've really toggled
843 if (cap == ACER_CAP_WIRELESS ||
844 cap == ACER_CAP_BLUETOOTH) {
845 status = WMID_set_u32(value, cap, interface);
846 if (ACPI_FAILURE(status))
849 return AMW0_set_u32(value, cap, interface);
852 return WMID_set_u32(value, cap, interface);
854 return AE_BAD_PARAMETER;
857 return AE_BAD_PARAMETER;
860 static void __init acer_commandline_init(void)
863 * These will all fail silently if the value given is invalid, or the
864 * capability isn't available on the given interface
866 set_u32(mailled, ACER_CAP_MAILLED);
867 set_u32(threeg, ACER_CAP_THREEG);
868 set_u32(brightness, ACER_CAP_BRIGHTNESS);
872 * LED device (Mail LED only, no other LEDs known yet)
874 static void mail_led_set(struct led_classdev *led_cdev,
875 enum led_brightness value)
877 set_u32(value, ACER_CAP_MAILLED);
880 static struct led_classdev mail_led = {
881 .name = "acer-wmi::mail",
882 .brightness_set = mail_led_set,
885 static int __devinit acer_led_init(struct device *dev)
887 return led_classdev_register(dev, &mail_led);
890 static void acer_led_exit(void)
892 led_classdev_unregister(&mail_led);
898 static struct backlight_device *acer_backlight_device;
900 static int read_brightness(struct backlight_device *bd)
903 get_u32(&value, ACER_CAP_BRIGHTNESS);
907 static int update_bl_status(struct backlight_device *bd)
909 int intensity = bd->props.brightness;
911 if (bd->props.power != FB_BLANK_UNBLANK)
913 if (bd->props.fb_blank != FB_BLANK_UNBLANK)
916 set_u32(intensity, ACER_CAP_BRIGHTNESS);
921 static struct backlight_ops acer_bl_ops = {
922 .get_brightness = read_brightness,
923 .update_status = update_bl_status,
926 static int __devinit acer_backlight_init(struct device *dev)
928 struct backlight_device *bd;
930 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
932 printk(ACER_ERR "Could not register Acer backlight device\n");
933 acer_backlight_device = NULL;
937 acer_backlight_device = bd;
939 bd->props.power = FB_BLANK_UNBLANK;
940 bd->props.brightness = max_brightness;
941 bd->props.max_brightness = max_brightness;
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_IWUGO | S_IRUGO | S_IWUSR,
1087 show_interface, NULL);
1092 static u32 get_wmid_devices(void)
1094 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1095 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 return *((u32 *) obj->buffer.pointer);
1114 static int __devinit acer_platform_probe(struct platform_device *device)
1118 if (has_cap(ACER_CAP_MAILLED)) {
1119 err = acer_led_init(&device->dev);
1124 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1125 err = acer_backlight_init(&device->dev);
1127 goto error_brightness;
1130 err = acer_rfkill_init(&device->dev);
1137 if (has_cap(ACER_CAP_BRIGHTNESS))
1138 acer_backlight_exit();
1140 if (has_cap(ACER_CAP_MAILLED))
1146 static int acer_platform_remove(struct platform_device *device)
1148 if (has_cap(ACER_CAP_MAILLED))
1150 if (has_cap(ACER_CAP_BRIGHTNESS))
1151 acer_backlight_exit();
1157 static int acer_platform_suspend(struct platform_device *dev,
1161 struct acer_data *data = &interface->data;
1166 if (has_cap(ACER_CAP_MAILLED)) {
1167 get_u32(&value, ACER_CAP_MAILLED);
1168 data->mailled = value;
1171 if (has_cap(ACER_CAP_BRIGHTNESS)) {
1172 get_u32(&value, ACER_CAP_BRIGHTNESS);
1173 data->brightness = value;
1179 static int acer_platform_resume(struct platform_device *device)
1181 struct acer_data *data = &interface->data;
1186 if (has_cap(ACER_CAP_MAILLED))
1187 set_u32(data->mailled, ACER_CAP_MAILLED);
1189 if (has_cap(ACER_CAP_BRIGHTNESS))
1190 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1195 static struct platform_driver acer_platform_driver = {
1198 .owner = THIS_MODULE,
1200 .probe = acer_platform_probe,
1201 .remove = acer_platform_remove,
1202 .suspend = acer_platform_suspend,
1203 .resume = acer_platform_resume,
1206 static struct platform_device *acer_platform_device;
1208 static int remove_sysfs(struct platform_device *device)
1210 if (has_cap(ACER_CAP_THREEG))
1211 device_remove_file(&device->dev, &dev_attr_threeg);
1213 device_remove_file(&device->dev, &dev_attr_interface);
1218 static int create_sysfs(void)
1220 int retval = -ENOMEM;
1222 if (has_cap(ACER_CAP_THREEG)) {
1223 retval = device_create_file(&acer_platform_device->dev,
1229 retval = device_create_file(&acer_platform_device->dev,
1230 &dev_attr_interface);
1237 remove_sysfs(acer_platform_device);
1241 static void remove_debugfs(void)
1243 debugfs_remove(interface->debug.devices);
1244 debugfs_remove(interface->debug.root);
1247 static int create_debugfs(void)
1249 interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1250 if (!interface->debug.root) {
1251 printk(ACER_ERR "Failed to create debugfs directory");
1255 interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1256 interface->debug.root,
1257 &interface->debug.wmid_devices);
1258 if (!interface->debug.devices)
1268 static int __init acer_wmi_init(void)
1272 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
1274 if (dmi_check_system(acer_blacklist)) {
1275 printk(ACER_INFO "Blacklisted hardware detected - "
1283 * Detect which ACPI-WMI interface we're using.
1285 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1286 interface = &AMW0_V2_interface;
1288 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1289 interface = &wmid_interface;
1291 if (wmi_has_guid(WMID_GUID2) && interface) {
1292 if (ACPI_FAILURE(WMID_set_capabilities())) {
1293 printk(ACER_ERR "Unable to detect available WMID "
1297 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1298 printk(ACER_ERR "No WMID device detection method found\n");
1302 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1303 interface = &AMW0_interface;
1305 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1306 printk(ACER_ERR "Unable to detect available AMW0 "
1312 if (wmi_has_guid(AMW0_GUID1))
1313 AMW0_find_mailled();
1316 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1323 if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
1324 interface->capability &= ~ACER_CAP_BRIGHTNESS;
1325 printk(ACER_INFO "Brightness must be controlled by "
1326 "generic video driver\n");
1329 if (platform_driver_register(&acer_platform_driver)) {
1330 printk(ACER_ERR "Unable to register platform driver.\n");
1331 goto error_platform_register;
1333 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1334 platform_device_add(acer_platform_device);
1336 err = create_sysfs();
1340 if (wmi_has_guid(WMID_GUID2)) {
1341 interface->debug.wmid_devices = get_wmid_devices();
1342 err = create_debugfs();
1347 /* Override any initial settings with values from the commandline */
1348 acer_commandline_init();
1352 error_platform_register:
1356 static void __exit acer_wmi_exit(void)
1358 remove_sysfs(acer_platform_device);
1360 platform_device_del(acer_platform_device);
1361 platform_driver_unregister(&acer_platform_driver);
1363 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1367 module_init(acer_wmi_init);
1368 module_exit(acer_wmi_exit);