2 * asus-laptop.c - Asus Laptop Support
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
6 * Copyright (C) 2006-2007 Corentin Chary
7 * Copyright (C) 2011 Wind River Systems
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * The development page for this driver is located at
25 * http://sourceforge.net/projects/acpi4asus/
28 * Pontus Fuchs - Helper functions, cleanup
29 * Johann Wiesner - Small compile fixes
30 * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
31 * Eric Burghard - LED display support for W1N
32 * Josh Green - Light Sens support
33 * Thomas Tuttle - His first patch for led support was very helpful
34 * Sam Lin - GPS support
37 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/init.h>
42 #include <linux/types.h>
43 #include <linux/err.h>
44 #include <linux/proc_fs.h>
45 #include <linux/backlight.h>
47 #include <linux/leds.h>
48 #include <linux/platform_device.h>
49 #include <linux/uaccess.h>
50 #include <linux/input.h>
51 #include <linux/input/sparse-keymap.h>
52 #include <linux/input-polldev.h>
53 #include <linux/rfkill.h>
54 #include <linux/slab.h>
55 #include <linux/dmi.h>
56 #include <acpi/acpi_drivers.h>
57 #include <acpi/acpi_bus.h>
59 #define ASUS_LAPTOP_VERSION "0.42"
61 #define ASUS_LAPTOP_NAME "Asus Laptop Support"
62 #define ASUS_LAPTOP_CLASS "hotkey"
63 #define ASUS_LAPTOP_DEVICE_NAME "Hotkey"
64 #define ASUS_LAPTOP_FILE KBUILD_MODNAME
65 #define ASUS_LAPTOP_PREFIX "\\_SB.ATKD."
67 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
68 MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
69 MODULE_LICENSE("GPL");
72 * WAPF defines the behavior of the Fn+Fx wlan key
73 * The significance of values is yet to be found, but
75 * Bit | Bluetooth | WLAN
76 * 0 | Hardware | Hardware
77 * 1 | Hardware | Software
78 * 4 | Software | Software
81 module_param(wapf, uint, 0444);
82 MODULE_PARM_DESC(wapf, "WAPF value");
84 static char *wled_type = "unknown";
85 static char *bled_type = "unknown";
87 module_param(wled_type, charp, 0444);
88 MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
89 "(unknown, led or rfkill). "
90 "default is unknown");
92 module_param(bled_type, charp, 0444);
93 MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
94 "(unknown, led or rfkill). "
95 "default is unknown");
97 static int wlan_status = 1;
98 static int bluetooth_status = 1;
99 static int wimax_status = -1;
100 static int wwan_status = -1;
101 static int als_status;
103 module_param(wlan_status, int, 0444);
104 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
105 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
108 module_param(bluetooth_status, int, 0444);
109 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
110 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
113 module_param(wimax_status, int, 0444);
114 MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
115 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
118 module_param(wwan_status, int, 0444);
119 MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
120 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
123 module_param(als_status, int, 0444);
124 MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
125 "(0 = disabled, 1 = enabled). "
129 * Some events we use, same for all Asus
131 #define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */
132 #define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */
133 #define ATKD_BR_MIN ATKD_BR_UP
134 #define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */
135 #define ATKD_LCD_ON 0x33
136 #define ATKD_LCD_OFF 0x34
139 * Known bits returned by \_SB.ATKD.HWRS
142 #define BT_HWRS 0x100
145 * Flags for hotk status
146 * WL_ON and BT_ON are also used for wireless_status()
148 #define WL_RSTS 0x01 /* internal Wifi */
149 #define BT_RSTS 0x02 /* internal Bluetooth */
150 #define WM_RSTS 0x08 /* internal wimax */
151 #define WW_RSTS 0x20 /* internal wwan */
153 /* WLED and BLED type */
154 #define TYPE_UNKNOWN 0
156 #define TYPE_RFKILL 2
159 #define METHOD_MLED "MLED"
160 #define METHOD_TLED "TLED"
161 #define METHOD_RLED "RLED" /* W1JC */
162 #define METHOD_PLED "PLED" /* A7J */
163 #define METHOD_GLED "GLED" /* G1, G2 (probably) */
166 #define METHOD_LEDD "SLCM"
170 * WLED and BLED are not handled like other XLED, because in some dsdt
171 * they also control the WLAN/Bluetooth device.
173 #define METHOD_WLAN "WLED"
174 #define METHOD_BLUETOOTH "BLED"
177 #define METHOD_WWAN "GSMC"
178 #define METHOD_WIMAX "WMXC"
180 #define METHOD_WL_STATUS "RSTS"
183 #define METHOD_BRIGHTNESS_SET "SPLV"
184 #define METHOD_BRIGHTNESS_GET "GPLV"
187 #define METHOD_SWITCH_DISPLAY "SDSP"
189 #define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */
190 #define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */
193 /* R2H use different handle for GPS on/off */
194 #define METHOD_GPS_ON "SDON"
195 #define METHOD_GPS_OFF "SDOF"
196 #define METHOD_GPS_STATUS "GPST"
199 #define METHOD_KBD_LIGHT_SET "SLKB"
200 #define METHOD_KBD_LIGHT_GET "GLKB"
202 /* For Pegatron Lucid tablet */
203 #define DEVICE_NAME_PEGA "Lucid"
205 #define METHOD_PEGA_ENABLE "ENPR"
206 #define METHOD_PEGA_DISABLE "DAPR"
207 #define PEGA_WLAN 0x00
208 #define PEGA_BLUETOOTH 0x01
209 #define PEGA_WWAN 0x02
210 #define PEGA_ALS 0x04
211 #define PEGA_ALS_POWER 0x05
213 #define METHOD_PEGA_READ "RDLN"
214 #define PEGA_READ_ALS_H 0x02
215 #define PEGA_READ_ALS_L 0x03
217 #define PEGA_ACCEL_NAME "pega_accel"
218 #define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
219 #define METHOD_XLRX "XLRX"
220 #define METHOD_XLRY "XLRY"
221 #define METHOD_XLRZ "XLRZ"
222 #define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
223 #define PEGA_ACC_RETRIES 3
226 * Define a specific led structure to keep the main structure clean
230 struct work_struct work;
231 struct led_classdev led;
232 struct asus_laptop *asus;
237 * Same thing for rfkill
240 /* type of control. Maps to PEGA_* values or *_RSTS */
242 struct rfkill *rfkill;
243 struct asus_laptop *asus;
247 * This is the main structure, we can use it to store anything interesting
248 * about the hotk device
251 char *name; /* laptop name */
253 struct acpi_table_header *dsdt_info;
254 struct platform_device *platform_device;
255 struct acpi_device *device; /* the device we are in */
256 struct backlight_device *backlight_device;
258 struct input_dev *inputdev;
259 struct key_entry *keymap;
260 struct input_polled_dev *pega_accel_poll;
262 struct asus_led wled;
263 struct asus_led bled;
264 struct asus_led mled;
265 struct asus_led tled;
266 struct asus_led rled;
267 struct asus_led pled;
268 struct asus_led gled;
269 struct asus_led kled;
270 struct workqueue_struct *led_workqueue;
282 struct asus_rfkill wlan;
283 struct asus_rfkill bluetooth;
284 struct asus_rfkill wwan;
285 struct asus_rfkill wimax;
286 struct asus_rfkill gps;
288 acpi_handle handle; /* the handle of the hotk device */
289 u32 ledd_status; /* status of the LED display */
290 u8 light_level; /* light sensor level */
291 u8 light_switch; /* light sensor switch value */
292 u16 event_count[128]; /* count for each event TODO make this better */
295 static const struct key_entry asus_keymap[] = {
296 /* Lenovo SL Specific keycodes */
297 {KE_KEY, 0x02, { KEY_SCREENLOCK } },
298 {KE_KEY, 0x05, { KEY_WLAN } },
299 {KE_KEY, 0x08, { KEY_F13 } },
300 {KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */
301 {KE_KEY, 0x17, { KEY_ZOOM } },
302 {KE_KEY, 0x1f, { KEY_BATTERY } },
303 /* End of Lenovo SL Specific keycodes */
304 {KE_KEY, 0x30, { KEY_VOLUMEUP } },
305 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
306 {KE_KEY, 0x32, { KEY_MUTE } },
307 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } },
308 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } },
309 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
310 {KE_KEY, 0x41, { KEY_NEXTSONG } },
311 {KE_KEY, 0x43, { KEY_STOPCD } },
312 {KE_KEY, 0x45, { KEY_PLAYPAUSE } },
313 {KE_KEY, 0x4c, { KEY_MEDIA } },
314 {KE_KEY, 0x50, { KEY_EMAIL } },
315 {KE_KEY, 0x51, { KEY_WWW } },
316 {KE_KEY, 0x55, { KEY_CALC } },
317 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */
318 {KE_KEY, 0x5D, { KEY_WLAN } },
319 {KE_KEY, 0x5E, { KEY_WLAN } },
320 {KE_KEY, 0x5F, { KEY_WLAN } },
321 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } },
322 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } },
323 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } },
324 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } },
325 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */
326 {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
327 {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
328 {KE_KEY, 0x7E, { KEY_BLUETOOTH } },
329 {KE_KEY, 0x7D, { KEY_BLUETOOTH } },
330 {KE_KEY, 0x82, { KEY_CAMERA } },
331 {KE_KEY, 0x88, { KEY_WLAN } },
332 {KE_KEY, 0x8A, { KEY_PROG1 } },
333 {KE_KEY, 0x95, { KEY_MEDIA } },
334 {KE_KEY, 0x99, { KEY_PHONE } },
335 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } },
336 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } },
337 {KE_KEY, 0xb5, { KEY_CALC } },
343 * This function evaluates an ACPI method, given an int as parameter, the
344 * method is searched within the scope of the handle, can be NULL. The output
345 * of the method is written is output, which can also be NULL
347 * returns 0 if write is successful, -1 else.
349 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
350 struct acpi_buffer *output)
352 struct acpi_object_list params; /* list of input parameters (an int) */
353 union acpi_object in_obj; /* the only param we use */
360 params.pointer = &in_obj;
361 in_obj.type = ACPI_TYPE_INTEGER;
362 in_obj.integer.value = val;
364 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
371 static int write_acpi_int(acpi_handle handle, const char *method, int val)
373 return write_acpi_int_ret(handle, method, val, NULL);
376 static int acpi_check_handle(acpi_handle handle, const char *method,
385 status = acpi_get_handle(handle, (char *)method,
390 status = acpi_get_handle(handle, (char *)method,
394 if (status != AE_OK) {
396 pr_warn("Error finding %s\n", method);
402 static bool asus_check_pega_lucid(struct asus_laptop *asus)
404 return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
405 !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
406 !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
407 !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
410 static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
412 char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
413 return write_acpi_int(asus->handle, method, unit);
416 static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
419 unsigned long long val;
420 for (i = 0; i < PEGA_ACC_RETRIES; i++) {
421 acpi_evaluate_integer(asus->handle, method, NULL, &val);
423 /* The output is noisy. From reading the ASL
424 * dissassembly, timeout errors are returned with 1's
425 * in the high word, and the lack of locking around
426 * thei hi/lo byte reads means that a transition
427 * between (for example) -1 and 0 could be read as
428 * 0xff00 or 0x00ff. */
429 delta = abs(curr - (short)val);
430 if (delta < 128 && !(val & ~0xffff))
433 return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
436 static void pega_accel_poll(struct input_polled_dev *ipd)
438 struct device *parent = ipd->input->dev.parent;
439 struct asus_laptop *asus = dev_get_drvdata(parent);
441 /* In some cases, the very first call to poll causes a
442 * recursive fault under the polldev worker. This is
443 * apparently related to very early userspace access to the
444 * device, and perhaps a firmware bug. Fake the first report. */
445 if (!asus->pega_acc_live) {
446 asus->pega_acc_live = true;
447 input_report_abs(ipd->input, ABS_X, 0);
448 input_report_abs(ipd->input, ABS_Y, 0);
449 input_report_abs(ipd->input, ABS_Z, 0);
450 input_sync(ipd->input);
454 asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
455 asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
456 asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
458 /* Note transform, convert to "right/up/out" in the native
459 * landscape orientation (i.e. the vector is the direction of
460 * "real up" in the device's cartiesian coordinates). */
461 input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x);
462 input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y);
463 input_report_abs(ipd->input, ABS_Z, asus->pega_acc_z);
464 input_sync(ipd->input);
467 static void pega_accel_exit(struct asus_laptop *asus)
469 if (asus->pega_accel_poll) {
470 input_unregister_polled_device(asus->pega_accel_poll);
471 input_free_polled_device(asus->pega_accel_poll);
473 asus->pega_accel_poll = NULL;
476 static int pega_accel_init(struct asus_laptop *asus)
479 struct input_polled_dev *ipd;
481 if (!asus->is_pega_lucid)
484 if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
485 acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
486 acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
489 ipd = input_allocate_polled_device();
493 ipd->poll = pega_accel_poll;
494 ipd->poll_interval = 125;
495 ipd->poll_interval_min = 50;
496 ipd->poll_interval_max = 2000;
498 ipd->input->name = PEGA_ACCEL_DESC;
499 ipd->input->phys = PEGA_ACCEL_NAME "/input0";
500 ipd->input->dev.parent = &asus->platform_device->dev;
501 ipd->input->id.bustype = BUS_HOST;
503 set_bit(EV_ABS, ipd->input->evbit);
504 input_set_abs_params(ipd->input, ABS_X,
505 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
506 input_set_abs_params(ipd->input, ABS_Y,
507 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
508 input_set_abs_params(ipd->input, ABS_Z,
509 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
511 err = input_register_polled_device(ipd);
515 asus->pega_accel_poll = ipd;
519 input_free_polled_device(ipd);
523 /* Generic LED function */
524 static int asus_led_set(struct asus_laptop *asus, const char *method,
527 if (!strcmp(method, METHOD_MLED))
529 else if (!strcmp(method, METHOD_GLED))
534 return write_acpi_int(asus->handle, method, value);
540 /* /sys/class/led handlers */
541 static void asus_led_cdev_set(struct led_classdev *led_cdev,
542 enum led_brightness value)
544 struct asus_led *led = container_of(led_cdev, struct asus_led, led);
545 struct asus_laptop *asus = led->asus;
548 queue_work(asus->led_workqueue, &led->work);
551 static void asus_led_cdev_update(struct work_struct *work)
553 struct asus_led *led = container_of(work, struct asus_led, work);
554 struct asus_laptop *asus = led->asus;
556 asus_led_set(asus, led->method, led->wk);
559 static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
561 return led_cdev->brightness;
565 * Keyboard backlight (also a LED)
567 static int asus_kled_lvl(struct asus_laptop *asus)
569 unsigned long long kblv;
570 struct acpi_object_list params;
571 union acpi_object in_obj;
575 params.pointer = &in_obj;
576 in_obj.type = ACPI_TYPE_INTEGER;
577 in_obj.integer.value = 2;
579 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
581 if (ACPI_FAILURE(rv)) {
582 pr_warn("Error reading kled level\n");
588 static int asus_kled_set(struct asus_laptop *asus, int kblv)
591 kblv = (1 << 7) | (kblv & 0x7F);
595 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
596 pr_warn("Keyboard LED display write failed\n");
602 static void asus_kled_cdev_set(struct led_classdev *led_cdev,
603 enum led_brightness value)
605 struct asus_led *led = container_of(led_cdev, struct asus_led, led);
606 struct asus_laptop *asus = led->asus;
609 queue_work(asus->led_workqueue, &led->work);
612 static void asus_kled_cdev_update(struct work_struct *work)
614 struct asus_led *led = container_of(work, struct asus_led, work);
615 struct asus_laptop *asus = led->asus;
617 asus_kled_set(asus, led->wk);
620 static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
622 struct asus_led *led = container_of(led_cdev, struct asus_led, led);
623 struct asus_laptop *asus = led->asus;
625 return asus_kled_lvl(asus);
628 static void asus_led_exit(struct asus_laptop *asus)
630 if (!IS_ERR_OR_NULL(asus->wled.led.dev))
631 led_classdev_unregister(&asus->wled.led);
632 if (!IS_ERR_OR_NULL(asus->bled.led.dev))
633 led_classdev_unregister(&asus->bled.led);
634 if (!IS_ERR_OR_NULL(asus->mled.led.dev))
635 led_classdev_unregister(&asus->mled.led);
636 if (!IS_ERR_OR_NULL(asus->tled.led.dev))
637 led_classdev_unregister(&asus->tled.led);
638 if (!IS_ERR_OR_NULL(asus->pled.led.dev))
639 led_classdev_unregister(&asus->pled.led);
640 if (!IS_ERR_OR_NULL(asus->rled.led.dev))
641 led_classdev_unregister(&asus->rled.led);
642 if (!IS_ERR_OR_NULL(asus->gled.led.dev))
643 led_classdev_unregister(&asus->gled.led);
644 if (!IS_ERR_OR_NULL(asus->kled.led.dev))
645 led_classdev_unregister(&asus->kled.led);
646 if (asus->led_workqueue) {
647 destroy_workqueue(asus->led_workqueue);
648 asus->led_workqueue = NULL;
652 /* Ugly macro, need to fix that later */
653 static int asus_led_register(struct asus_laptop *asus,
654 struct asus_led *led,
655 const char *name, const char *method)
657 struct led_classdev *led_cdev = &led->led;
659 if (!method || acpi_check_handle(asus->handle, method, NULL))
660 return 0; /* Led not present */
663 led->method = method;
665 INIT_WORK(&led->work, asus_led_cdev_update);
666 led_cdev->name = name;
667 led_cdev->brightness_set = asus_led_cdev_set;
668 led_cdev->brightness_get = asus_led_cdev_get;
669 led_cdev->max_brightness = 1;
670 return led_classdev_register(&asus->platform_device->dev, led_cdev);
673 static int asus_led_init(struct asus_laptop *asus)
678 * The Pegatron Lucid has no physical leds, but all methods are
679 * available in the DSDT...
681 if (asus->is_pega_lucid)
685 * Functions that actually update the LED's are called from a
686 * workqueue. By doing this as separate work rather than when the LED
687 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
688 * potentially bad time, such as a timer interrupt.
690 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
691 if (!asus->led_workqueue)
694 if (asus->wled_type == TYPE_LED)
695 r = asus_led_register(asus, &asus->wled, "asus::wlan",
699 if (asus->bled_type == TYPE_LED)
700 r = asus_led_register(asus, &asus->bled, "asus::bluetooth",
704 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
707 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
710 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
713 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
716 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
719 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
720 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
721 struct asus_led *led = &asus->kled;
722 struct led_classdev *cdev = &led->led;
726 INIT_WORK(&led->work, asus_kled_cdev_update);
727 cdev->name = "asus::kbd_backlight";
728 cdev->brightness_set = asus_kled_cdev_set;
729 cdev->brightness_get = asus_kled_cdev_get;
730 cdev->max_brightness = 3;
731 r = led_classdev_register(&asus->platform_device->dev, cdev);
742 static int asus_read_brightness(struct backlight_device *bd)
744 struct asus_laptop *asus = bl_get_data(bd);
745 unsigned long long value;
746 acpi_status rv = AE_OK;
748 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
750 if (ACPI_FAILURE(rv))
751 pr_warn("Error reading brightness\n");
756 static int asus_set_brightness(struct backlight_device *bd, int value)
758 struct asus_laptop *asus = bl_get_data(bd);
760 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
761 pr_warn("Error changing brightness\n");
767 static int update_bl_status(struct backlight_device *bd)
769 int value = bd->props.brightness;
771 return asus_set_brightness(bd, value);
774 static const struct backlight_ops asusbl_ops = {
775 .get_brightness = asus_read_brightness,
776 .update_status = update_bl_status,
779 static int asus_backlight_notify(struct asus_laptop *asus)
781 struct backlight_device *bd = asus->backlight_device;
782 int old = bd->props.brightness;
784 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
789 static int asus_backlight_init(struct asus_laptop *asus)
791 struct backlight_device *bd;
792 struct backlight_properties props;
794 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
795 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
798 memset(&props, 0, sizeof(struct backlight_properties));
799 props.max_brightness = 15;
800 props.type = BACKLIGHT_PLATFORM;
802 bd = backlight_device_register(ASUS_LAPTOP_FILE,
803 &asus->platform_device->dev, asus,
804 &asusbl_ops, &props);
806 pr_err("Could not register asus backlight device\n");
807 asus->backlight_device = NULL;
811 asus->backlight_device = bd;
812 bd->props.brightness = asus_read_brightness(bd);
813 bd->props.power = FB_BLANK_UNBLANK;
814 backlight_update_status(bd);
818 static void asus_backlight_exit(struct asus_laptop *asus)
820 if (asus->backlight_device)
821 backlight_device_unregister(asus->backlight_device);
822 asus->backlight_device = NULL;
826 * Platform device handlers
830 * We write our info in page, we begin at offset off and cannot write more
831 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
832 * number of bytes written in page
834 static ssize_t show_infos(struct device *dev,
835 struct device_attribute *attr, char *page)
837 struct asus_laptop *asus = dev_get_drvdata(dev);
839 unsigned long long temp;
840 char buf[16]; /* enough for all info */
841 acpi_status rv = AE_OK;
844 * We use the easy way, we don't care of off and count,
845 * so we don't set eof to 1
848 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
849 len += sprintf(page + len, "Model reference : %s\n", asus->name);
851 * The SFUN method probably allows the original driver to get the list
852 * of features supported by a given model. For now, 0x0100 or 0x0800
853 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
854 * The significance of others is yet to be found.
856 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
857 if (!ACPI_FAILURE(rv))
858 len += sprintf(page + len, "SFUN value : %#x\n",
861 * The HWRS method return informations about the hardware.
862 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
863 * 0x40 for WWAN, 0x10 for WIMAX.
864 * The significance of others is yet to be found.
865 * We don't currently use this for device detection, and it
866 * takes several seconds to run on some systems.
868 rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
869 if (!ACPI_FAILURE(rv))
870 len += sprintf(page + len, "HWRS value : %#x\n",
873 * Another value for userspace: the ASYM method returns 0x02 for
874 * battery low and 0x04 for battery critical, its readings tend to be
875 * more accurate than those provided by _BST.
876 * Note: since not all the laptops provide this method, errors are
879 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
880 if (!ACPI_FAILURE(rv))
881 len += sprintf(page + len, "ASYM value : %#x\n",
883 if (asus->dsdt_info) {
884 snprintf(buf, 16, "%d", asus->dsdt_info->length);
885 len += sprintf(page + len, "DSDT length : %s\n", buf);
886 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
887 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
888 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
889 len += sprintf(page + len, "DSDT revision : %s\n", buf);
890 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
891 len += sprintf(page + len, "OEM id : %s\n", buf);
892 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
893 len += sprintf(page + len, "OEM table id : %s\n", buf);
894 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
895 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
896 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
897 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
898 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
899 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
905 static int parse_arg(const char *buf, unsigned long count, int *val)
911 if (sscanf(buf, "%i", val) != 1)
916 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
917 const char *buf, size_t count,
923 rv = parse_arg(buf, count, &value);
927 if (write_acpi_int(asus->handle, method, value))
935 static ssize_t show_ledd(struct device *dev,
936 struct device_attribute *attr, char *buf)
938 struct asus_laptop *asus = dev_get_drvdata(dev);
940 return sprintf(buf, "0x%08x\n", asus->ledd_status);
943 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
944 const char *buf, size_t count)
946 struct asus_laptop *asus = dev_get_drvdata(dev);
949 rv = parse_arg(buf, count, &value);
951 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
952 pr_warn("LED display write failed\n");
955 asus->ledd_status = (u32) value;
963 static int asus_wireless_status(struct asus_laptop *asus, int mask)
965 unsigned long long status;
966 acpi_status rv = AE_OK;
968 if (!asus->have_rsts)
969 return (asus->wireless_status & mask) ? 1 : 0;
971 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
973 if (ACPI_FAILURE(rv)) {
974 pr_warn("Error reading Wireless status\n");
977 return !!(status & mask);
983 static int asus_wlan_set(struct asus_laptop *asus, int status)
985 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
986 pr_warn("Error setting wlan status to %d\n", status);
992 static ssize_t show_wlan(struct device *dev,
993 struct device_attribute *attr, char *buf)
995 struct asus_laptop *asus = dev_get_drvdata(dev);
997 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1000 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
1001 const char *buf, size_t count)
1003 struct asus_laptop *asus = dev_get_drvdata(dev);
1005 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1011 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1013 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1014 pr_warn("Error setting bluetooth status to %d\n", status);
1020 static ssize_t show_bluetooth(struct device *dev,
1021 struct device_attribute *attr, char *buf)
1023 struct asus_laptop *asus = dev_get_drvdata(dev);
1025 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1028 static ssize_t store_bluetooth(struct device *dev,
1029 struct device_attribute *attr, const char *buf,
1032 struct asus_laptop *asus = dev_get_drvdata(dev);
1034 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1040 static int asus_wimax_set(struct asus_laptop *asus, int status)
1042 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1043 pr_warn("Error setting wimax status to %d\n", status);
1049 static ssize_t show_wimax(struct device *dev,
1050 struct device_attribute *attr, char *buf)
1052 struct asus_laptop *asus = dev_get_drvdata(dev);
1054 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1057 static ssize_t store_wimax(struct device *dev,
1058 struct device_attribute *attr, const char *buf,
1061 struct asus_laptop *asus = dev_get_drvdata(dev);
1063 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1069 static int asus_wwan_set(struct asus_laptop *asus, int status)
1071 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1072 pr_warn("Error setting wwan status to %d\n", status);
1078 static ssize_t show_wwan(struct device *dev,
1079 struct device_attribute *attr, char *buf)
1081 struct asus_laptop *asus = dev_get_drvdata(dev);
1083 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1086 static ssize_t store_wwan(struct device *dev,
1087 struct device_attribute *attr, const char *buf,
1090 struct asus_laptop *asus = dev_get_drvdata(dev);
1092 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1098 static void asus_set_display(struct asus_laptop *asus, int value)
1100 /* no sanity check needed for now */
1101 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1102 pr_warn("Error setting display\n");
1107 * Experimental support for display switching. As of now: 1 should activate
1108 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1109 * Any combination (bitwise) of these will suffice. I never actually tested 4
1110 * displays hooked up simultaneously, so be warned. See the acpi4asus README
1113 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
1114 const char *buf, size_t count)
1116 struct asus_laptop *asus = dev_get_drvdata(dev);
1119 rv = parse_arg(buf, count, &value);
1121 asus_set_display(asus, value);
1128 static void asus_als_switch(struct asus_laptop *asus, int value)
1132 if (asus->is_pega_lucid) {
1133 ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1135 ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1137 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1140 pr_warning("Error setting light sensor switch\n");
1142 asus->light_switch = value;
1145 static ssize_t show_lssw(struct device *dev,
1146 struct device_attribute *attr, char *buf)
1148 struct asus_laptop *asus = dev_get_drvdata(dev);
1150 return sprintf(buf, "%d\n", asus->light_switch);
1153 static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
1154 const char *buf, size_t count)
1156 struct asus_laptop *asus = dev_get_drvdata(dev);
1159 rv = parse_arg(buf, count, &value);
1161 asus_als_switch(asus, value ? 1 : 0);
1166 static void asus_als_level(struct asus_laptop *asus, int value)
1168 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1169 pr_warn("Error setting light sensor level\n");
1170 asus->light_level = value;
1173 static ssize_t show_lslvl(struct device *dev,
1174 struct device_attribute *attr, char *buf)
1176 struct asus_laptop *asus = dev_get_drvdata(dev);
1178 return sprintf(buf, "%d\n", asus->light_level);
1181 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
1182 const char *buf, size_t count)
1184 struct asus_laptop *asus = dev_get_drvdata(dev);
1187 rv = parse_arg(buf, count, &value);
1189 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1190 /* 0 <= value <= 15 */
1191 asus_als_level(asus, value);
1197 static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1199 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1200 int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1203 union acpi_object *obj = buffer.pointer;
1204 if (obj && obj->type == ACPI_TYPE_INTEGER)
1205 *result = obj->integer.value;
1212 static ssize_t show_lsvalue(struct device *dev,
1213 struct device_attribute *attr, char *buf)
1215 struct asus_laptop *asus = dev_get_drvdata(dev);
1218 err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1220 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1222 return sprintf(buf, "%d\n", 10 * hi + lo);
1229 static int asus_gps_status(struct asus_laptop *asus)
1231 unsigned long long status;
1232 acpi_status rv = AE_OK;
1234 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1236 if (ACPI_FAILURE(rv)) {
1237 pr_warn("Error reading GPS status\n");
1243 static int asus_gps_switch(struct asus_laptop *asus, int status)
1245 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1247 if (write_acpi_int(asus->handle, meth, 0x02))
1252 static ssize_t show_gps(struct device *dev,
1253 struct device_attribute *attr, char *buf)
1255 struct asus_laptop *asus = dev_get_drvdata(dev);
1257 return sprintf(buf, "%d\n", asus_gps_status(asus));
1260 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
1261 const char *buf, size_t count)
1263 struct asus_laptop *asus = dev_get_drvdata(dev);
1267 rv = parse_arg(buf, count, &value);
1270 ret = asus_gps_switch(asus, !!value);
1273 rfkill_set_sw_state(asus->gps.rfkill, !value);
1280 static int asus_gps_rfkill_set(void *data, bool blocked)
1282 struct asus_laptop *asus = data;
1284 return asus_gps_switch(asus, !blocked);
1287 static const struct rfkill_ops asus_gps_rfkill_ops = {
1288 .set_block = asus_gps_rfkill_set,
1291 static int asus_rfkill_set(void *data, bool blocked)
1293 struct asus_rfkill *rfk = data;
1294 struct asus_laptop *asus = rfk->asus;
1296 if (rfk->control_id == WL_RSTS)
1297 return asus_wlan_set(asus, !blocked);
1298 else if (rfk->control_id == BT_RSTS)
1299 return asus_bluetooth_set(asus, !blocked);
1300 else if (rfk->control_id == WM_RSTS)
1301 return asus_wimax_set(asus, !blocked);
1302 else if (rfk->control_id == WW_RSTS)
1303 return asus_wwan_set(asus, !blocked);
1308 static const struct rfkill_ops asus_rfkill_ops = {
1309 .set_block = asus_rfkill_set,
1312 static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1317 rfkill_unregister(rfk->rfkill);
1318 rfkill_destroy(rfk->rfkill);
1322 static void asus_rfkill_exit(struct asus_laptop *asus)
1324 asus_rfkill_terminate(&asus->wwan);
1325 asus_rfkill_terminate(&asus->bluetooth);
1326 asus_rfkill_terminate(&asus->wlan);
1327 asus_rfkill_terminate(&asus->gps);
1330 static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1331 const char *name, int control_id, int type,
1332 const struct rfkill_ops *ops)
1336 rfk->control_id = control_id;
1338 rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1343 result = rfkill_register(rfk->rfkill);
1345 rfkill_destroy(rfk->rfkill);
1352 static int asus_rfkill_init(struct asus_laptop *asus)
1356 if (asus->is_pega_lucid)
1359 if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1360 !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1361 !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1362 result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1363 -1, RFKILL_TYPE_GPS,
1364 &asus_gps_rfkill_ops);
1369 if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1370 asus->wled_type == TYPE_RFKILL)
1371 result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1372 WL_RSTS, RFKILL_TYPE_WLAN,
1377 if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1378 asus->bled_type == TYPE_RFKILL)
1379 result = asus_rfkill_setup(asus, &asus->bluetooth,
1380 "asus-bluetooth", BT_RSTS,
1381 RFKILL_TYPE_BLUETOOTH,
1386 if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1387 result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1388 WW_RSTS, RFKILL_TYPE_WWAN,
1393 if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1394 result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1395 WM_RSTS, RFKILL_TYPE_WIMAX,
1402 asus_rfkill_exit(asus);
1407 static int pega_rfkill_set(void *data, bool blocked)
1409 struct asus_rfkill *rfk = data;
1411 int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1415 static const struct rfkill_ops pega_rfkill_ops = {
1416 .set_block = pega_rfkill_set,
1419 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1420 const char *name, int controlid, int rfkill_type)
1422 return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1426 static int pega_rfkill_init(struct asus_laptop *asus)
1430 if(!asus->is_pega_lucid)
1433 ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1434 PEGA_WLAN, RFKILL_TYPE_WLAN);
1438 ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1439 PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1443 ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1444 PEGA_WWAN, RFKILL_TYPE_WWAN);
1448 asus_rfkill_exit(asus);
1454 * Input device (i.e. hotkeys)
1456 static void asus_input_notify(struct asus_laptop *asus, int event)
1458 if (!asus->inputdev)
1460 if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1461 pr_info("Unknown key %x pressed\n", event);
1464 static int asus_input_init(struct asus_laptop *asus)
1466 struct input_dev *input;
1469 input = input_allocate_device();
1471 pr_warn("Unable to allocate input device\n");
1474 input->name = "Asus Laptop extra buttons";
1475 input->phys = ASUS_LAPTOP_FILE "/input0";
1476 input->id.bustype = BUS_HOST;
1477 input->dev.parent = &asus->platform_device->dev;
1479 error = sparse_keymap_setup(input, asus_keymap, NULL);
1481 pr_err("Unable to setup input device keymap\n");
1484 error = input_register_device(input);
1486 pr_warn("Unable to register input device\n");
1487 goto err_free_keymap;
1490 asus->inputdev = input;
1494 sparse_keymap_free(input);
1496 input_free_device(input);
1500 static void asus_input_exit(struct asus_laptop *asus)
1502 if (asus->inputdev) {
1503 sparse_keymap_free(asus->inputdev);
1504 input_unregister_device(asus->inputdev);
1506 asus->inputdev = NULL;
1512 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1514 struct asus_laptop *asus = acpi_driver_data(device);
1517 /* TODO Find a better way to handle events count. */
1518 count = asus->event_count[event % 128]++;
1519 acpi_bus_generate_proc_event(asus->device, event, count);
1520 acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1521 dev_name(&asus->device->dev), event,
1524 /* Brightness events are special */
1525 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) {
1527 /* Ignore them completely if the acpi video driver is used */
1528 if (asus->backlight_device != NULL) {
1529 /* Update the backlight device. */
1530 asus_backlight_notify(asus);
1535 /* Accelerometer "coarse orientation change" event */
1536 if (asus->pega_accel_poll && event == 0xEA) {
1537 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1542 asus_input_notify(asus, event);
1545 static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL);
1546 static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan);
1547 static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR,
1548 show_bluetooth, store_bluetooth);
1549 static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax);
1550 static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan);
1551 static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp);
1552 static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
1553 static DEVICE_ATTR(ls_value, S_IRUGO, show_lsvalue, NULL);
1554 static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
1555 static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
1556 static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
1558 static struct attribute *asus_attributes[] = {
1559 &dev_attr_infos.attr,
1560 &dev_attr_wlan.attr,
1561 &dev_attr_bluetooth.attr,
1562 &dev_attr_wimax.attr,
1563 &dev_attr_wwan.attr,
1564 &dev_attr_display.attr,
1565 &dev_attr_ledd.attr,
1566 &dev_attr_ls_value.attr,
1567 &dev_attr_ls_level.attr,
1568 &dev_attr_ls_switch.attr,
1573 static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1574 struct attribute *attr,
1577 struct device *dev = container_of(kobj, struct device, kobj);
1578 struct platform_device *pdev = to_platform_device(dev);
1579 struct asus_laptop *asus = platform_get_drvdata(pdev);
1580 acpi_handle handle = asus->handle;
1583 if (asus->is_pega_lucid) {
1584 /* no ls_level interface on the Lucid */
1585 if (attr == &dev_attr_ls_switch.attr)
1587 else if (attr == &dev_attr_ls_level.attr)
1596 if (attr == &dev_attr_wlan.attr) {
1597 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1599 } else if (attr == &dev_attr_bluetooth.attr) {
1600 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1602 } else if (attr == &dev_attr_display.attr) {
1603 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1605 } else if (attr == &dev_attr_wimax.attr) {
1607 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1609 } else if (attr == &dev_attr_wwan.attr) {
1610 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1612 } else if (attr == &dev_attr_ledd.attr) {
1613 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1615 } else if (attr == &dev_attr_ls_switch.attr ||
1616 attr == &dev_attr_ls_level.attr) {
1617 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1618 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1619 } else if (attr == &dev_attr_ls_value.attr) {
1620 supported = asus->is_pega_lucid;
1621 } else if (attr == &dev_attr_gps.attr) {
1622 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1623 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1624 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1629 return supported ? attr->mode : 0;
1633 static const struct attribute_group asus_attr_group = {
1634 .is_visible = asus_sysfs_is_visible,
1635 .attrs = asus_attributes,
1638 static int asus_platform_init(struct asus_laptop *asus)
1642 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1643 if (!asus->platform_device)
1645 platform_set_drvdata(asus->platform_device, asus);
1647 result = platform_device_add(asus->platform_device);
1649 goto fail_platform_device;
1651 result = sysfs_create_group(&asus->platform_device->dev.kobj,
1659 platform_device_del(asus->platform_device);
1660 fail_platform_device:
1661 platform_device_put(asus->platform_device);
1665 static void asus_platform_exit(struct asus_laptop *asus)
1667 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1668 platform_device_unregister(asus->platform_device);
1671 static struct platform_driver platform_driver = {
1673 .name = ASUS_LAPTOP_FILE,
1674 .owner = THIS_MODULE,
1679 * This function is used to initialize the context with right values. In this
1680 * method, we can make all the detection we want, and modify the asus_laptop
1683 static int asus_laptop_get_info(struct asus_laptop *asus)
1685 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1686 union acpi_object *model = NULL;
1687 unsigned long long bsts_result;
1688 char *string = NULL;
1692 * Get DSDT headers early enough to allow for differentiating between
1693 * models, but late enough to allow acpi_bus_register_driver() to fail
1694 * before doing anything ACPI-specific. Should we encounter a machine,
1695 * which needs special handling (i.e. its hotkey device has a different
1696 * HID), this bit will be moved.
1698 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1699 if (ACPI_FAILURE(status))
1700 pr_warn("Couldn't get the DSDT table header\n");
1702 /* We have to write 0 on init this far for all ASUS models */
1703 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1704 pr_err("Hotkey initialization failed\n");
1708 /* This needs to be called for some laptops to init properly */
1710 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1711 if (ACPI_FAILURE(status))
1712 pr_warn("Error calling BSTS\n");
1713 else if (bsts_result)
1714 pr_notice("BSTS called, 0x%02x returned\n",
1715 (uint) bsts_result);
1718 if (write_acpi_int(asus->handle, "CWAP", wapf))
1719 pr_err("Error calling CWAP(%d)\n", wapf);
1721 * Try to match the object returned by INIT to the specific model.
1722 * Handle every possible object (or the lack of thereof) the DSDT
1723 * writers might throw at us. When in trouble, we pass NULL to
1724 * asus_model_match() and try something completely different.
1726 if (buffer.pointer) {
1727 model = buffer.pointer;
1728 switch (model->type) {
1729 case ACPI_TYPE_STRING:
1730 string = model->string.pointer;
1732 case ACPI_TYPE_BUFFER:
1733 string = model->buffer.pointer;
1740 asus->name = kstrdup(string, GFP_KERNEL);
1742 kfree(buffer.pointer);
1747 pr_notice(" %s model detected\n", string);
1749 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1750 asus->have_rsts = true;
1757 static int asus_acpi_init(struct asus_laptop *asus)
1761 result = acpi_bus_get_status(asus->device);
1764 if (!asus->device->status.present) {
1765 pr_err("Hotkey device not present, aborting\n");
1769 result = asus_laptop_get_info(asus);
1773 if (!strcmp(bled_type, "led"))
1774 asus->bled_type = TYPE_LED;
1775 else if (!strcmp(bled_type, "rfkill"))
1776 asus->bled_type = TYPE_RFKILL;
1778 if (!strcmp(wled_type, "led"))
1779 asus->wled_type = TYPE_LED;
1780 else if (!strcmp(wled_type, "rfkill"))
1781 asus->wled_type = TYPE_RFKILL;
1783 if (bluetooth_status >= 0)
1784 asus_bluetooth_set(asus, !!bluetooth_status);
1786 if (wlan_status >= 0)
1787 asus_wlan_set(asus, !!wlan_status);
1789 if (wimax_status >= 0)
1790 asus_wimax_set(asus, !!wimax_status);
1792 if (wwan_status >= 0)
1793 asus_wwan_set(asus, !!wwan_status);
1795 /* Keyboard Backlight is on by default */
1796 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1797 asus_kled_set(asus, 1);
1799 /* LED display is off by default */
1800 asus->ledd_status = 0xFFF;
1802 /* Set initial values of light sensor and level */
1803 asus->light_switch = !!als_status;
1804 asus->light_level = 5; /* level 5 for sensor sensitivity */
1806 if (asus->is_pega_lucid) {
1807 asus_als_switch(asus, asus->light_switch);
1808 } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1809 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1810 asus_als_switch(asus, asus->light_switch);
1811 asus_als_level(asus, asus->light_level);
1817 static void asus_dmi_check(void)
1821 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1825 /* On L1400B WLED control the sound card, don't mess with it ... */
1826 if (strncmp(model, "L1400B", 6) == 0) {
1831 static bool asus_device_present;
1833 static int asus_acpi_add(struct acpi_device *device)
1835 struct asus_laptop *asus;
1838 pr_notice("Asus Laptop Support version %s\n",
1839 ASUS_LAPTOP_VERSION);
1840 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1843 asus->handle = device->handle;
1844 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1845 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1846 device->driver_data = asus;
1847 asus->device = device;
1851 result = asus_acpi_init(asus);
1856 * Need platform type detection first, then the platform
1857 * device. It is used as a parent for the sub-devices below.
1859 asus->is_pega_lucid = asus_check_pega_lucid(asus);
1860 result = asus_platform_init(asus);
1864 if (!acpi_video_backlight_support()) {
1865 result = asus_backlight_init(asus);
1867 goto fail_backlight;
1869 pr_info("Backlight controlled by ACPI video driver\n");
1871 result = asus_input_init(asus);
1875 result = asus_led_init(asus);
1879 result = asus_rfkill_init(asus);
1880 if (result && result != -ENODEV)
1883 result = pega_accel_init(asus);
1884 if (result && result != -ENODEV)
1885 goto fail_pega_accel;
1887 result = pega_rfkill_init(asus);
1888 if (result && result != -ENODEV)
1889 goto fail_pega_rfkill;
1891 asus_device_present = true;
1895 pega_accel_exit(asus);
1897 asus_rfkill_exit(asus);
1899 asus_led_exit(asus);
1901 asus_input_exit(asus);
1903 asus_backlight_exit(asus);
1905 asus_platform_exit(asus);
1913 static int asus_acpi_remove(struct acpi_device *device)
1915 struct asus_laptop *asus = acpi_driver_data(device);
1917 asus_backlight_exit(asus);
1918 asus_rfkill_exit(asus);
1919 asus_led_exit(asus);
1920 asus_input_exit(asus);
1921 pega_accel_exit(asus);
1922 asus_platform_exit(asus);
1929 static const struct acpi_device_id asus_device_ids[] = {
1934 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1936 static struct acpi_driver asus_acpi_driver = {
1937 .name = ASUS_LAPTOP_NAME,
1938 .class = ASUS_LAPTOP_CLASS,
1939 .owner = THIS_MODULE,
1940 .ids = asus_device_ids,
1941 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1943 .add = asus_acpi_add,
1944 .remove = asus_acpi_remove,
1945 .notify = asus_acpi_notify,
1949 static int __init asus_laptop_init(void)
1953 result = platform_driver_register(&platform_driver);
1957 result = acpi_bus_register_driver(&asus_acpi_driver);
1959 goto fail_acpi_driver;
1960 if (!asus_device_present) {
1962 goto fail_no_device;
1967 acpi_bus_unregister_driver(&asus_acpi_driver);
1969 platform_driver_unregister(&platform_driver);
1973 static void __exit asus_laptop_exit(void)
1975 acpi_bus_unregister_driver(&asus_acpi_driver);
1976 platform_driver_unregister(&platform_driver);
1979 module_init(asus_laptop_init);
1980 module_exit(asus_laptop_exit);