2 * Acer WMI Laptop Extras
4 * Copyright (C) 2007-2008 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 #define ACER_WMI_VERSION "0.1"
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/dmi.h>
32 #include <linux/backlight.h>
33 #include <linux/leds.h>
34 #include <linux/platform_device.h>
35 #include <linux/acpi.h>
36 #include <linux/i8042.h>
38 #include <acpi/acpi_drivers.h>
40 MODULE_AUTHOR("Carlos Corbacho");
41 MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
42 MODULE_LICENSE("GPL");
44 #define ACER_LOGPREFIX "acer-wmi: "
45 #define ACER_ERR KERN_ERR ACER_LOGPREFIX
46 #define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
47 #define ACER_INFO KERN_INFO ACER_LOGPREFIX
50 * The following defines quirks to get some specific functions to work
51 * which are known to not be supported over ACPI-WMI (such as the mail LED
52 * on WMID based Acer's)
62 * Meaning is unknown - this number is required for writing to ACPI for AMW0
63 * (it's also used in acerhk when directly accessing the BIOS)
65 #define ACER_AMW0_WRITE 0x9610
68 * Bit masks for the AMW0 interface
70 #define ACER_AMW0_WIRELESS_MASK 0x35
71 #define ACER_AMW0_BLUETOOTH_MASK 0x34
72 #define ACER_AMW0_MAILLED_MASK 0x31
75 * Method IDs for WMID interface
77 #define ACER_WMID_GET_WIRELESS_METHODID 1
78 #define ACER_WMID_GET_BLUETOOTH_METHODID 2
79 #define ACER_WMID_GET_BRIGHTNESS_METHODID 3
80 #define ACER_WMID_SET_WIRELESS_METHODID 4
81 #define ACER_WMID_SET_BLUETOOTH_METHODID 5
82 #define ACER_WMID_SET_BRIGHTNESS_METHODID 6
83 #define ACER_WMID_GET_THREEG_METHODID 10
84 #define ACER_WMID_SET_THREEG_METHODID 11
87 * Acer ACPI method GUIDs
89 #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
90 #define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
91 #define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
93 MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
94 MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
96 /* Temporary workaround until the WMI sysfs interface goes in */
97 MODULE_ALIAS("dmi:*:*Acer*:*:");
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 wireless = -1;
126 static int bluetooth = -1;
127 static int mailled = -1;
128 static int brightness = -1;
129 static int threeg = -1;
130 static int force_series;
132 module_param(mailled, int, 0444);
133 module_param(wireless, int, 0444);
134 module_param(bluetooth, int, 0444);
135 module_param(brightness, int, 0444);
136 module_param(threeg, int, 0444);
137 module_param(force_series, int, 0444);
138 MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware");
139 MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware");
140 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
141 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
142 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
143 MODULE_PARM_DESC(force_series, "Force a different laptop series");
153 /* Each low-level interface must define at least some of the following */
154 struct wmi_interface {
155 /* The WMI device type */
158 /* The capabilities this interface provides */
161 /* Private data for the current interface */
162 struct acer_data data;
165 /* The static interface pointer, points to the currently detected interface */
166 static struct wmi_interface *interface;
169 * Embedded Controller quirks
170 * Some laptops require us to directly access the EC to either enable or query
171 * features that are not available through WMI.
181 static struct quirk_entry *quirks;
183 static void set_quirks(void)
186 interface->capability |= ACER_CAP_MAILLED;
188 if (quirks->brightness)
189 interface->capability |= ACER_CAP_BRIGHTNESS;
192 static int dmi_matched(const struct dmi_system_id *dmi)
194 quirks = dmi->driver_data;
198 static struct quirk_entry quirk_unknown = {
201 static struct quirk_entry quirk_acer_aspire_1520 = {
205 static struct quirk_entry quirk_acer_travelmate_2490 = {
209 /* This AMW0 laptop has no bluetooth */
210 static struct quirk_entry quirk_medion_md_98300 = {
214 static struct dmi_system_id acer_quirks[] = {
216 .callback = dmi_matched,
217 .ident = "Acer Aspire 1360",
219 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
220 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
222 .driver_data = &quirk_acer_aspire_1520,
225 .callback = dmi_matched,
226 .ident = "Acer Aspire 1520",
228 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
229 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
231 .driver_data = &quirk_acer_aspire_1520,
234 .callback = dmi_matched,
235 .ident = "Acer Aspire 3100",
237 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
238 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
240 .driver_data = &quirk_acer_travelmate_2490,
243 .callback = dmi_matched,
244 .ident = "Acer Aspire 3610",
246 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
247 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
249 .driver_data = &quirk_acer_travelmate_2490,
252 .callback = dmi_matched,
253 .ident = "Acer Aspire 5100",
255 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
256 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
258 .driver_data = &quirk_acer_travelmate_2490,
261 .callback = dmi_matched,
262 .ident = "Acer Aspire 5610",
264 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
265 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
267 .driver_data = &quirk_acer_travelmate_2490,
270 .callback = dmi_matched,
271 .ident = "Acer Aspire 5630",
273 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
274 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
276 .driver_data = &quirk_acer_travelmate_2490,
279 .callback = dmi_matched,
280 .ident = "Acer Aspire 5650",
282 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
283 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
285 .driver_data = &quirk_acer_travelmate_2490,
288 .callback = dmi_matched,
289 .ident = "Acer Aspire 5680",
291 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
292 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
294 .driver_data = &quirk_acer_travelmate_2490,
297 .callback = dmi_matched,
298 .ident = "Acer Aspire 9110",
300 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
301 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
303 .driver_data = &quirk_acer_travelmate_2490,
306 .callback = dmi_matched,
307 .ident = "Acer TravelMate 2490",
309 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
310 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
312 .driver_data = &quirk_acer_travelmate_2490,
315 .callback = dmi_matched,
316 .ident = "Acer TravelMate 4200",
318 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
319 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
321 .driver_data = &quirk_acer_travelmate_2490,
324 .callback = dmi_matched,
325 .ident = "Medion MD 98300",
327 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
328 DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
330 .driver_data = &quirk_medion_md_98300,
335 /* Find which quirks are needed for a particular vendor/ model pair */
336 static void find_quirks(void)
339 dmi_check_system(acer_quirks);
340 } else if (force_series == 2490) {
341 quirks = &quirk_acer_travelmate_2490;
345 quirks = &quirk_unknown;
351 * General interface convenience methods
354 static bool has_cap(u32 cap)
356 if ((interface->capability & cap) != 0)
363 * AMW0 (V1) interface
380 static acpi_status wmab_execute(struct wmab_args *regbuf,
381 struct acpi_buffer *result)
383 struct acpi_buffer input;
385 input.length = sizeof(struct wmab_args);
386 input.pointer = (u8 *)regbuf;
388 status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
393 static acpi_status AMW0_get_u32(u32 *value, u32 cap,
394 struct wmi_interface *iface)
400 case ACER_CAP_MAILLED:
401 switch (quirks->mailled) {
403 err = ec_read(0xA, &result);
406 *value = (result >> 7) & 0x1;
410 case ACER_CAP_WIRELESS:
411 switch (quirks->wireless) {
413 err = ec_read(0x7B, &result);
416 *value = result & 0x1;
419 err = ec_read(0xA, &result);
422 *value = (result >> 2) & 0x1;
426 case ACER_CAP_BLUETOOTH:
427 switch (quirks->bluetooth) {
429 err = ec_read(0xA, &result);
432 *value = (result >> 4) & 0x1;
436 case ACER_CAP_BRIGHTNESS:
437 switch (quirks->brightness) {
439 err = ec_read(0x83, &result);
447 return AE_BAD_ADDRESS;
452 static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
454 struct wmab_args args;
456 args.eax = ACER_AMW0_WRITE;
457 args.ebx = value ? (1<<8) : 0;
458 args.ecx = args.edx = 0;
461 case ACER_CAP_MAILLED:
463 return AE_BAD_PARAMETER;
464 args.ebx |= ACER_AMW0_MAILLED_MASK;
466 case ACER_CAP_WIRELESS:
468 return AE_BAD_PARAMETER;
469 args.ebx |= ACER_AMW0_WIRELESS_MASK;
471 case ACER_CAP_BLUETOOTH:
473 return AE_BAD_PARAMETER;
474 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
476 case ACER_CAP_BRIGHTNESS:
477 if (value > max_brightness)
478 return AE_BAD_PARAMETER;
479 switch (quirks->brightness) {
481 return ec_write(0x83, value);
485 return AE_BAD_ADDRESS;
488 /* Actually do the set */
489 return wmab_execute(&args, NULL);
492 static acpi_status AMW0_find_mailled(void)
494 struct wmab_args args;
496 acpi_status status = AE_OK;
497 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
498 union acpi_object *obj;
501 args.ebx = args.ecx = args.edx = 0;
503 status = wmab_execute(&args, &out);
504 if (ACPI_FAILURE(status))
507 obj = (union acpi_object *) out.pointer;
508 if (obj && obj->type == ACPI_TYPE_BUFFER &&
509 obj->buffer.length == sizeof(struct wmab_ret)) {
510 ret = *((struct wmab_ret *) obj->buffer.pointer);
516 interface->capability |= ACER_CAP_MAILLED;
523 static acpi_status AMW0_set_capabilities(void)
525 struct wmab_args args;
527 acpi_status status = AE_OK;
528 struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
529 union acpi_object *obj;
531 args.eax = ACER_AMW0_WRITE;
532 args.ecx = args.edx = 0;
534 args.ebx = 0xa2 << 8;
535 args.ebx |= ACER_AMW0_WIRELESS_MASK;
537 status = wmab_execute(&args, &out);
538 if (ACPI_FAILURE(status))
541 obj = (union acpi_object *) out.pointer;
542 if (obj && obj->type == ACPI_TYPE_BUFFER &&
543 obj->buffer.length == sizeof(struct wmab_ret)) {
544 ret = *((struct wmab_ret *) obj->buffer.pointer);
550 interface->capability |= ACER_CAP_WIRELESS;
553 args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
555 status = wmab_execute(&args, &out);
556 if (ACPI_FAILURE(status))
559 obj = (union acpi_object *) out.pointer;
560 if (obj && obj->type == ACPI_TYPE_BUFFER
561 && obj->buffer.length == sizeof(struct wmab_ret)) {
562 ret = *((struct wmab_ret *) obj->buffer.pointer);
568 interface->capability |= ACER_CAP_BLUETOOTH;
573 * This appears to be safe to enable, since all Wistron based laptops
574 * appear to use the same EC register for brightness, even if they
575 * differ for wireless, etc
577 if (quirks->brightness >= 0)
578 interface->capability |= ACER_CAP_BRIGHTNESS;
583 static struct wmi_interface AMW0_interface = {
587 static struct wmi_interface AMW0_V2_interface = {
588 .type = ACER_AMW0_V2,
592 * New interface (The WMID interface)
595 WMI_execute_u32(u32 method_id, u32 in, u32 *out)
597 struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
598 struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
599 union acpi_object *obj;
603 status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
605 if (ACPI_FAILURE(status))
608 obj = (union acpi_object *) result.pointer;
609 if (obj && obj->type == ACPI_TYPE_BUFFER &&
610 obj->buffer.length == sizeof(u32)) {
611 tmp = *((u32 *) obj->buffer.pointer);
619 kfree(result.pointer);
624 static acpi_status WMID_get_u32(u32 *value, u32 cap,
625 struct wmi_interface *iface)
629 u32 result, method_id = 0;
632 case ACER_CAP_WIRELESS:
633 method_id = ACER_WMID_GET_WIRELESS_METHODID;
635 case ACER_CAP_BLUETOOTH:
636 method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
638 case ACER_CAP_BRIGHTNESS:
639 method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
641 case ACER_CAP_THREEG:
642 method_id = ACER_WMID_GET_THREEG_METHODID;
644 case ACER_CAP_MAILLED:
645 if (quirks->mailled == 1) {
651 return AE_BAD_ADDRESS;
653 status = WMI_execute_u32(method_id, 0, &result);
655 if (ACPI_SUCCESS(status))
661 static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
667 case ACER_CAP_BRIGHTNESS:
668 if (value > max_brightness)
669 return AE_BAD_PARAMETER;
670 method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
672 case ACER_CAP_WIRELESS:
674 return AE_BAD_PARAMETER;
675 method_id = ACER_WMID_SET_WIRELESS_METHODID;
677 case ACER_CAP_BLUETOOTH:
679 return AE_BAD_PARAMETER;
680 method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
682 case ACER_CAP_THREEG:
684 return AE_BAD_PARAMETER;
685 method_id = ACER_WMID_SET_THREEG_METHODID;
687 case ACER_CAP_MAILLED:
689 return AE_BAD_PARAMETER;
690 if (quirks->mailled == 1) {
691 param = value ? 0x92 : 0x93;
692 i8042_command(¶m, 0x1059);
697 return AE_BAD_ADDRESS;
699 return WMI_execute_u32(method_id, (u32)value, NULL);
702 static acpi_status WMID_set_capabilities(void)
704 struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
705 union acpi_object *obj;
709 status = wmi_query_block(WMID_GUID2, 1, &out);
710 if (ACPI_FAILURE(status))
713 obj = (union acpi_object *) out.pointer;
714 if (obj && obj->type == ACPI_TYPE_BUFFER &&
715 obj->buffer.length == sizeof(u32)) {
716 devices = *((u32 *) obj->buffer.pointer);
721 /* Not sure on the meaning of the relevant bits yet to detect these */
722 interface->capability |= ACER_CAP_WIRELESS;
723 interface->capability |= ACER_CAP_THREEG;
725 /* WMID always provides brightness methods */
726 interface->capability |= ACER_CAP_BRIGHTNESS;
729 interface->capability |= ACER_CAP_BLUETOOTH;
731 if (!(devices & 0x20))
732 max_brightness = 0x9;
737 static struct wmi_interface wmid_interface = {
742 * Generic Device (interface-independent)
745 static acpi_status get_u32(u32 *value, u32 cap)
747 acpi_status status = AE_BAD_ADDRESS;
749 switch (interface->type) {
751 status = AMW0_get_u32(value, cap, interface);
754 if (cap == ACER_CAP_MAILLED) {
755 status = AMW0_get_u32(value, cap, interface);
759 status = WMID_get_u32(value, cap, interface);
766 static acpi_status set_u32(u32 value, u32 cap)
768 if (interface->capability & cap) {
769 switch (interface->type) {
771 return AMW0_set_u32(value, cap, interface);
774 return WMID_set_u32(value, cap, interface);
776 return AE_BAD_PARAMETER;
779 return AE_BAD_PARAMETER;
782 static void __init acer_commandline_init(void)
785 * These will all fail silently if the value given is invalid, or the
786 * capability isn't available on the given interface
788 set_u32(mailled, ACER_CAP_MAILLED);
789 set_u32(wireless, ACER_CAP_WIRELESS);
790 set_u32(bluetooth, ACER_CAP_BLUETOOTH);
791 set_u32(threeg, ACER_CAP_THREEG);
792 set_u32(brightness, ACER_CAP_BRIGHTNESS);
796 * LED device (Mail LED only, no other LEDs known yet)
798 static void mail_led_set(struct led_classdev *led_cdev,
799 enum led_brightness value)
801 set_u32(value, ACER_CAP_MAILLED);
804 static struct led_classdev mail_led = {
805 .name = "acer-wmi::mail",
806 .brightness_set = mail_led_set,
809 static int __devinit acer_led_init(struct device *dev)
811 return led_classdev_register(dev, &mail_led);
814 static void acer_led_exit(void)
816 led_classdev_unregister(&mail_led);
822 static struct backlight_device *acer_backlight_device;
824 static int read_brightness(struct backlight_device *bd)
827 get_u32(&value, ACER_CAP_BRIGHTNESS);
831 static int update_bl_status(struct backlight_device *bd)
833 set_u32(bd->props.brightness, ACER_CAP_BRIGHTNESS);
837 static struct backlight_ops acer_bl_ops = {
838 .get_brightness = read_brightness,
839 .update_status = update_bl_status,
842 static int __devinit acer_backlight_init(struct device *dev)
844 struct backlight_device *bd;
846 bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
848 printk(ACER_ERR "Could not register Acer backlight device\n");
849 acer_backlight_device = NULL;
853 acer_backlight_device = bd;
855 bd->props.max_brightness = max_brightness;
856 bd->props.brightness = read_brightness(NULL);
857 backlight_update_status(bd);
861 static void acer_backlight_exit(void)
863 backlight_device_unregister(acer_backlight_device);
867 * Read/ write bool sysfs macro
869 #define show_set_bool(value, cap) \
871 show_bool_##value(struct device *dev, struct device_attribute *attr, \
875 acpi_status status = get_u32(&result, cap); \
876 if (ACPI_SUCCESS(status)) \
877 return sprintf(buf, "%u\n", result); \
878 return sprintf(buf, "Read error\n"); \
882 set_bool_##value(struct device *dev, struct device_attribute *attr, \
883 const char *buf, size_t count) \
885 u32 tmp = simple_strtoul(buf, NULL, 10); \
886 acpi_status status = set_u32(tmp, cap); \
887 if (ACPI_FAILURE(status)) \
891 static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
892 show_bool_##value, set_bool_##value);
894 show_set_bool(wireless, ACER_CAP_WIRELESS);
895 show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
896 show_set_bool(threeg, ACER_CAP_THREEG);
899 * Read interface sysfs macro
901 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
904 switch (interface->type) {
906 return sprintf(buf, "AMW0\n");
908 return sprintf(buf, "AMW0 v2\n");
910 return sprintf(buf, "WMID\n");
912 return sprintf(buf, "Error!\n");
916 static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
917 show_interface, NULL);
922 static int __devinit acer_platform_probe(struct platform_device *device)
926 if (has_cap(ACER_CAP_MAILLED)) {
927 err = acer_led_init(&device->dev);
932 if (has_cap(ACER_CAP_BRIGHTNESS)) {
933 err = acer_backlight_init(&device->dev);
935 goto error_brightness;
946 static int acer_platform_remove(struct platform_device *device)
948 if (has_cap(ACER_CAP_MAILLED))
950 if (has_cap(ACER_CAP_BRIGHTNESS))
951 acer_backlight_exit();
955 static int acer_platform_suspend(struct platform_device *dev,
959 struct acer_data *data = &interface->data;
964 if (has_cap(ACER_CAP_WIRELESS)) {
965 get_u32(&value, ACER_CAP_WIRELESS);
966 data->wireless = value;
969 if (has_cap(ACER_CAP_BLUETOOTH)) {
970 get_u32(&value, ACER_CAP_BLUETOOTH);
971 data->bluetooth = value;
974 if (has_cap(ACER_CAP_MAILLED)) {
975 get_u32(&value, ACER_CAP_MAILLED);
976 data->mailled = value;
979 if (has_cap(ACER_CAP_BRIGHTNESS)) {
980 get_u32(&value, ACER_CAP_BRIGHTNESS);
981 data->brightness = value;
987 static int acer_platform_resume(struct platform_device *device)
989 struct acer_data *data = &interface->data;
994 if (has_cap(ACER_CAP_WIRELESS))
995 set_u32(data->wireless, ACER_CAP_WIRELESS);
997 if (has_cap(ACER_CAP_BLUETOOTH))
998 set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
1000 if (has_cap(ACER_CAP_THREEG))
1001 set_u32(data->threeg, ACER_CAP_THREEG);
1003 if (has_cap(ACER_CAP_MAILLED))
1004 set_u32(data->mailled, ACER_CAP_MAILLED);
1006 if (has_cap(ACER_CAP_BRIGHTNESS))
1007 set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1012 static struct platform_driver acer_platform_driver = {
1015 .owner = THIS_MODULE,
1017 .probe = acer_platform_probe,
1018 .remove = acer_platform_remove,
1019 .suspend = acer_platform_suspend,
1020 .resume = acer_platform_resume,
1023 static struct platform_device *acer_platform_device;
1025 static int remove_sysfs(struct platform_device *device)
1027 if (has_cap(ACER_CAP_WIRELESS))
1028 device_remove_file(&device->dev, &dev_attr_wireless);
1030 if (has_cap(ACER_CAP_BLUETOOTH))
1031 device_remove_file(&device->dev, &dev_attr_bluetooth);
1033 if (has_cap(ACER_CAP_THREEG))
1034 device_remove_file(&device->dev, &dev_attr_threeg);
1036 device_remove_file(&device->dev, &dev_attr_interface);
1041 static int create_sysfs(void)
1043 int retval = -ENOMEM;
1045 if (has_cap(ACER_CAP_WIRELESS)) {
1046 retval = device_create_file(&acer_platform_device->dev,
1047 &dev_attr_wireless);
1052 if (has_cap(ACER_CAP_BLUETOOTH)) {
1053 retval = device_create_file(&acer_platform_device->dev,
1054 &dev_attr_bluetooth);
1059 if (has_cap(ACER_CAP_THREEG)) {
1060 retval = device_create_file(&acer_platform_device->dev,
1066 retval = device_create_file(&acer_platform_device->dev,
1067 &dev_attr_interface);
1074 remove_sysfs(acer_platform_device);
1078 static int __init acer_wmi_init(void)
1082 printk(ACER_INFO "Acer Laptop ACPI-WMI Extras version %s\n",
1088 * Detect which ACPI-WMI interface we're using.
1090 if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1091 interface = &AMW0_V2_interface;
1093 if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
1094 interface = &wmid_interface;
1096 if (wmi_has_guid(WMID_GUID2) && interface) {
1097 if (ACPI_FAILURE(WMID_set_capabilities())) {
1098 printk(ACER_ERR "Unable to detect available WMID "
1102 } else if (!wmi_has_guid(WMID_GUID2) && interface) {
1103 printk(ACER_ERR "No WMID device detection method found\n");
1107 if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
1108 interface = &AMW0_interface;
1110 if (ACPI_FAILURE(AMW0_set_capabilities())) {
1111 printk(ACER_ERR "Unable to detect available AMW0 "
1117 if (wmi_has_guid(AMW0_GUID1))
1118 AMW0_find_mailled();
1121 printk(ACER_ERR "No or unsupported WMI interface, unable to "
1126 if (platform_driver_register(&acer_platform_driver)) {
1127 printk(ACER_ERR "Unable to register platform driver.\n");
1128 goto error_platform_register;
1130 acer_platform_device = platform_device_alloc("acer-wmi", -1);
1131 platform_device_add(acer_platform_device);
1133 err = create_sysfs();
1137 /* Override any initial settings with values from the commandline */
1138 acer_commandline_init();
1142 error_platform_register:
1146 static void __exit acer_wmi_exit(void)
1148 remove_sysfs(acer_platform_device);
1149 platform_device_del(acer_platform_device);
1150 platform_driver_unregister(&acer_platform_driver);
1152 printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
1156 module_init(acer_wmi_init);
1157 module_exit(acer_wmi_exit);