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 int wlan_status = 1;
85 static int bluetooth_status = 1;
86 static int wimax_status = -1;
87 static int wwan_status = -1;
88 static int als_status;
90 module_param(wlan_status, int, 0444);
91 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
92 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
95 module_param(bluetooth_status, int, 0444);
96 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
97 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
100 module_param(wimax_status, int, 0444);
101 MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
102 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
105 module_param(wwan_status, int, 0444);
106 MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
107 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
110 module_param(als_status, int, 0444);
111 MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
112 "(0 = disabled, 1 = enabled). "
116 * Some events we use, same for all Asus
118 #define ATKD_BR_UP 0x10 /* (event & ~ATKD_BR_UP) = brightness level */
119 #define ATKD_BR_DOWN 0x20 /* (event & ~ATKD_BR_DOWN) = britghness level */
120 #define ATKD_BR_MIN ATKD_BR_UP
121 #define ATKD_BR_MAX (ATKD_BR_DOWN | 0xF) /* 0x2f */
122 #define ATKD_LCD_ON 0x33
123 #define ATKD_LCD_OFF 0x34
126 * Known bits returned by \_SB.ATKD.HWRS
129 #define BT_HWRS 0x100
132 * Flags for hotk status
133 * WL_ON and BT_ON are also used for wireless_status()
135 #define WL_RSTS 0x01 /* internal Wifi */
136 #define BT_RSTS 0x02 /* internal Bluetooth */
137 #define WM_RSTS 0x08 /* internal wimax */
138 #define WW_RSTS 0x20 /* internal wwan */
141 #define METHOD_MLED "MLED"
142 #define METHOD_TLED "TLED"
143 #define METHOD_RLED "RLED" /* W1JC */
144 #define METHOD_PLED "PLED" /* A7J */
145 #define METHOD_GLED "GLED" /* G1, G2 (probably) */
148 #define METHOD_LEDD "SLCM"
152 * WLED and BLED are not handled like other XLED, because in some dsdt
153 * they also control the WLAN/Bluetooth device.
155 #define METHOD_WLAN "WLED"
156 #define METHOD_BLUETOOTH "BLED"
159 #define METHOD_WWAN "GSMC"
160 #define METHOD_WIMAX "WMXC"
162 #define METHOD_WL_STATUS "RSTS"
165 #define METHOD_BRIGHTNESS_SET "SPLV"
166 #define METHOD_BRIGHTNESS_GET "GPLV"
169 #define METHOD_SWITCH_DISPLAY "SDSP"
171 #define METHOD_ALS_CONTROL "ALSC" /* Z71A Z71V */
172 #define METHOD_ALS_LEVEL "ALSL" /* Z71A Z71V */
175 /* R2H use different handle for GPS on/off */
176 #define METHOD_GPS_ON "SDON"
177 #define METHOD_GPS_OFF "SDOF"
178 #define METHOD_GPS_STATUS "GPST"
181 #define METHOD_KBD_LIGHT_SET "SLKB"
182 #define METHOD_KBD_LIGHT_GET "GLKB"
184 /* For Pegatron Lucid tablet */
185 #define DEVICE_NAME_PEGA "Lucid"
187 #define METHOD_PEGA_ENABLE "ENPR"
188 #define METHOD_PEGA_DISABLE "DAPR"
189 #define PEGA_WLAN 0x00
190 #define PEGA_BLUETOOTH 0x01
191 #define PEGA_WWAN 0x02
192 #define PEGA_ALS 0x04
193 #define PEGA_ALS_POWER 0x05
195 #define METHOD_PEGA_READ "RDLN"
196 #define PEGA_READ_ALS_H 0x02
197 #define PEGA_READ_ALS_L 0x03
199 #define PEGA_ACCEL_NAME "pega_accel"
200 #define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
201 #define METHOD_XLRX "XLRX"
202 #define METHOD_XLRY "XLRY"
203 #define METHOD_XLRZ "XLRZ"
204 #define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
205 #define PEGA_ACC_RETRIES 3
208 * Define a specific led structure to keep the main structure clean
212 struct work_struct work;
213 struct led_classdev led;
214 struct asus_laptop *asus;
219 * Same thing for rfkill
221 struct asus_pega_rfkill {
222 int control_id; /* type of control. Maps to PEGA_* values */
223 struct rfkill *rfkill;
224 struct asus_laptop *asus;
228 * This is the main structure, we can use it to store anything interesting
229 * about the hotk device
232 char *name; /* laptop name */
234 struct acpi_table_header *dsdt_info;
235 struct platform_device *platform_device;
236 struct acpi_device *device; /* the device we are in */
237 struct backlight_device *backlight_device;
239 struct input_dev *inputdev;
240 struct key_entry *keymap;
241 struct input_polled_dev *pega_accel_poll;
243 struct asus_led mled;
244 struct asus_led tled;
245 struct asus_led rled;
246 struct asus_led pled;
247 struct asus_led gled;
248 struct asus_led kled;
249 struct workqueue_struct *led_workqueue;
259 struct rfkill *gps_rfkill;
261 struct asus_pega_rfkill wlanrfk;
262 struct asus_pega_rfkill btrfk;
263 struct asus_pega_rfkill wwanrfk;
265 acpi_handle handle; /* the handle of the hotk device */
266 u32 ledd_status; /* status of the LED display */
267 u8 light_level; /* light sensor level */
268 u8 light_switch; /* light sensor switch value */
269 u16 event_count[128]; /* count for each event TODO make this better */
272 static const struct key_entry asus_keymap[] = {
273 /* Lenovo SL Specific keycodes */
274 {KE_KEY, 0x02, { KEY_SCREENLOCK } },
275 {KE_KEY, 0x05, { KEY_WLAN } },
276 {KE_KEY, 0x08, { KEY_F13 } },
277 {KE_KEY, 0x17, { KEY_ZOOM } },
278 {KE_KEY, 0x1f, { KEY_BATTERY } },
279 /* End of Lenovo SL Specific keycodes */
280 {KE_KEY, 0x30, { KEY_VOLUMEUP } },
281 {KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
282 {KE_KEY, 0x32, { KEY_MUTE } },
283 {KE_KEY, 0x33, { KEY_SWITCHVIDEOMODE } },
284 {KE_KEY, 0x34, { KEY_SWITCHVIDEOMODE } },
285 {KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
286 {KE_KEY, 0x41, { KEY_NEXTSONG } },
287 {KE_KEY, 0x43, { KEY_STOPCD } },
288 {KE_KEY, 0x45, { KEY_PLAYPAUSE } },
289 {KE_KEY, 0x4c, { KEY_MEDIA } },
290 {KE_KEY, 0x50, { KEY_EMAIL } },
291 {KE_KEY, 0x51, { KEY_WWW } },
292 {KE_KEY, 0x55, { KEY_CALC } },
293 {KE_KEY, 0x5C, { KEY_SCREENLOCK } }, /* Screenlock */
294 {KE_KEY, 0x5D, { KEY_WLAN } },
295 {KE_KEY, 0x5E, { KEY_WLAN } },
296 {KE_KEY, 0x5F, { KEY_WLAN } },
297 {KE_KEY, 0x60, { KEY_SWITCHVIDEOMODE } },
298 {KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } },
299 {KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } },
300 {KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } },
301 {KE_KEY, 0x6B, { KEY_F13 } }, /* Lock Touchpad */
302 {KE_KEY, 0x7E, { KEY_BLUETOOTH } },
303 {KE_KEY, 0x7D, { KEY_BLUETOOTH } },
304 {KE_KEY, 0x82, { KEY_CAMERA } },
305 {KE_KEY, 0x88, { KEY_WLAN } },
306 {KE_KEY, 0x8A, { KEY_PROG1 } },
307 {KE_KEY, 0x95, { KEY_MEDIA } },
308 {KE_KEY, 0x99, { KEY_PHONE } },
309 {KE_KEY, 0xc4, { KEY_KBDILLUMUP } },
310 {KE_KEY, 0xc5, { KEY_KBDILLUMDOWN } },
311 {KE_KEY, 0xb5, { KEY_CALC } },
317 * This function evaluates an ACPI method, given an int as parameter, the
318 * method is searched within the scope of the handle, can be NULL. The output
319 * of the method is written is output, which can also be NULL
321 * returns 0 if write is successful, -1 else.
323 static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
324 struct acpi_buffer *output)
326 struct acpi_object_list params; /* list of input parameters (an int) */
327 union acpi_object in_obj; /* the only param we use */
334 params.pointer = &in_obj;
335 in_obj.type = ACPI_TYPE_INTEGER;
336 in_obj.integer.value = val;
338 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
345 static int write_acpi_int(acpi_handle handle, const char *method, int val)
347 return write_acpi_int_ret(handle, method, val, NULL);
350 static int acpi_check_handle(acpi_handle handle, const char *method,
359 status = acpi_get_handle(handle, (char *)method,
364 status = acpi_get_handle(handle, (char *)method,
368 if (status != AE_OK) {
370 pr_warn("Error finding %s\n", method);
376 static bool asus_check_pega_lucid(struct asus_laptop *asus)
378 return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
379 !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
380 !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
381 !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
384 static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
386 char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
387 return write_acpi_int(asus->handle, method, unit);
390 static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
393 unsigned long long val;
394 for (i = 0; i < PEGA_ACC_RETRIES; i++) {
395 acpi_evaluate_integer(asus->handle, method, NULL, &val);
397 /* The output is noisy. From reading the ASL
398 * dissassembly, timeout errors are returned with 1's
399 * in the high word, and the lack of locking around
400 * thei hi/lo byte reads means that a transition
401 * between (for example) -1 and 0 could be read as
402 * 0xff00 or 0x00ff. */
403 delta = abs(curr - (short)val);
404 if (delta < 128 && !(val & ~0xffff))
407 return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
410 static void pega_accel_poll(struct input_polled_dev *ipd)
412 struct device *parent = ipd->input->dev.parent;
413 struct asus_laptop *asus = dev_get_drvdata(parent);
415 /* In some cases, the very first call to poll causes a
416 * recursive fault under the polldev worker. This is
417 * apparently related to very early userspace access to the
418 * device, and perhaps a firmware bug. Fake the first report. */
419 if (!asus->pega_acc_live) {
420 asus->pega_acc_live = true;
421 input_report_abs(ipd->input, ABS_X, 0);
422 input_report_abs(ipd->input, ABS_Y, 0);
423 input_report_abs(ipd->input, ABS_Z, 0);
424 input_sync(ipd->input);
428 asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
429 asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
430 asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
432 /* Note transform, convert to "right/up/out" in the native
433 * landscape orientation (i.e. the vector is the direction of
434 * "real up" in the device's cartiesian coordinates). */
435 input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x);
436 input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y);
437 input_report_abs(ipd->input, ABS_Z, asus->pega_acc_z);
438 input_sync(ipd->input);
441 static void pega_accel_exit(struct asus_laptop *asus)
443 if (asus->pega_accel_poll) {
444 input_unregister_polled_device(asus->pega_accel_poll);
445 input_free_polled_device(asus->pega_accel_poll);
447 asus->pega_accel_poll = NULL;
450 static int pega_accel_init(struct asus_laptop *asus)
453 struct input_polled_dev *ipd;
455 if (!asus->is_pega_lucid)
458 if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
459 acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
460 acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
463 ipd = input_allocate_polled_device();
467 ipd->poll = pega_accel_poll;
468 ipd->poll_interval = 125;
469 ipd->poll_interval_min = 50;
470 ipd->poll_interval_max = 2000;
472 ipd->input->name = PEGA_ACCEL_DESC;
473 ipd->input->phys = PEGA_ACCEL_NAME "/input0";
474 ipd->input->dev.parent = &asus->platform_device->dev;
475 ipd->input->id.bustype = BUS_HOST;
477 set_bit(EV_ABS, ipd->input->evbit);
478 input_set_abs_params(ipd->input, ABS_X,
479 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
480 input_set_abs_params(ipd->input, ABS_Y,
481 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
482 input_set_abs_params(ipd->input, ABS_Z,
483 -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
485 err = input_register_polled_device(ipd);
489 asus->pega_accel_poll = ipd;
493 input_free_polled_device(ipd);
497 /* Generic LED function */
498 static int asus_led_set(struct asus_laptop *asus, const char *method,
501 if (!strcmp(method, METHOD_MLED))
503 else if (!strcmp(method, METHOD_GLED))
508 return write_acpi_int(asus->handle, method, value);
514 /* /sys/class/led handlers */
515 static void asus_led_cdev_set(struct led_classdev *led_cdev,
516 enum led_brightness value)
518 struct asus_led *led = container_of(led_cdev, struct asus_led, led);
519 struct asus_laptop *asus = led->asus;
522 queue_work(asus->led_workqueue, &led->work);
525 static void asus_led_cdev_update(struct work_struct *work)
527 struct asus_led *led = container_of(work, struct asus_led, work);
528 struct asus_laptop *asus = led->asus;
530 asus_led_set(asus, led->method, led->wk);
533 static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
535 return led_cdev->brightness;
539 * Keyboard backlight (also a LED)
541 static int asus_kled_lvl(struct asus_laptop *asus)
543 unsigned long long kblv;
544 struct acpi_object_list params;
545 union acpi_object in_obj;
549 params.pointer = &in_obj;
550 in_obj.type = ACPI_TYPE_INTEGER;
551 in_obj.integer.value = 2;
553 rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
555 if (ACPI_FAILURE(rv)) {
556 pr_warn("Error reading kled level\n");
562 static int asus_kled_set(struct asus_laptop *asus, int kblv)
565 kblv = (1 << 7) | (kblv & 0x7F);
569 if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
570 pr_warn("Keyboard LED display write failed\n");
576 static void asus_kled_cdev_set(struct led_classdev *led_cdev,
577 enum led_brightness value)
579 struct asus_led *led = container_of(led_cdev, struct asus_led, led);
580 struct asus_laptop *asus = led->asus;
583 queue_work(asus->led_workqueue, &led->work);
586 static void asus_kled_cdev_update(struct work_struct *work)
588 struct asus_led *led = container_of(work, struct asus_led, work);
589 struct asus_laptop *asus = led->asus;
591 asus_kled_set(asus, led->wk);
594 static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
596 struct asus_led *led = container_of(led_cdev, struct asus_led, led);
597 struct asus_laptop *asus = led->asus;
599 return asus_kled_lvl(asus);
602 static void asus_led_exit(struct asus_laptop *asus)
604 if (!IS_ERR_OR_NULL(asus->mled.led.dev))
605 led_classdev_unregister(&asus->mled.led);
606 if (!IS_ERR_OR_NULL(asus->tled.led.dev))
607 led_classdev_unregister(&asus->tled.led);
608 if (!IS_ERR_OR_NULL(asus->pled.led.dev))
609 led_classdev_unregister(&asus->pled.led);
610 if (!IS_ERR_OR_NULL(asus->rled.led.dev))
611 led_classdev_unregister(&asus->rled.led);
612 if (!IS_ERR_OR_NULL(asus->gled.led.dev))
613 led_classdev_unregister(&asus->gled.led);
614 if (!IS_ERR_OR_NULL(asus->kled.led.dev))
615 led_classdev_unregister(&asus->kled.led);
616 if (asus->led_workqueue) {
617 destroy_workqueue(asus->led_workqueue);
618 asus->led_workqueue = NULL;
622 /* Ugly macro, need to fix that later */
623 static int asus_led_register(struct asus_laptop *asus,
624 struct asus_led *led,
625 const char *name, const char *method)
627 struct led_classdev *led_cdev = &led->led;
629 if (!method || acpi_check_handle(asus->handle, method, NULL))
630 return 0; /* Led not present */
633 led->method = method;
635 INIT_WORK(&led->work, asus_led_cdev_update);
636 led_cdev->name = name;
637 led_cdev->brightness_set = asus_led_cdev_set;
638 led_cdev->brightness_get = asus_led_cdev_get;
639 led_cdev->max_brightness = 1;
640 return led_classdev_register(&asus->platform_device->dev, led_cdev);
643 static int asus_led_init(struct asus_laptop *asus)
648 * The Pegatron Lucid has no physical leds, but all methods are
649 * available in the DSDT...
651 if (asus->is_pega_lucid)
655 * Functions that actually update the LED's are called from a
656 * workqueue. By doing this as separate work rather than when the LED
657 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
658 * potentially bad time, such as a timer interrupt.
660 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
661 if (!asus->led_workqueue)
664 r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
667 r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
670 r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
673 r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
676 r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
679 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
680 !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
681 struct asus_led *led = &asus->kled;
682 struct led_classdev *cdev = &led->led;
686 INIT_WORK(&led->work, asus_kled_cdev_update);
687 cdev->name = "asus::kbd_backlight";
688 cdev->brightness_set = asus_kled_cdev_set;
689 cdev->brightness_get = asus_kled_cdev_get;
690 cdev->max_brightness = 3;
691 r = led_classdev_register(&asus->platform_device->dev, cdev);
702 static int asus_read_brightness(struct backlight_device *bd)
704 struct asus_laptop *asus = bl_get_data(bd);
705 unsigned long long value;
706 acpi_status rv = AE_OK;
708 rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
710 if (ACPI_FAILURE(rv))
711 pr_warn("Error reading brightness\n");
716 static int asus_set_brightness(struct backlight_device *bd, int value)
718 struct asus_laptop *asus = bl_get_data(bd);
720 if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
721 pr_warn("Error changing brightness\n");
727 static int update_bl_status(struct backlight_device *bd)
729 int value = bd->props.brightness;
731 return asus_set_brightness(bd, value);
734 static const struct backlight_ops asusbl_ops = {
735 .get_brightness = asus_read_brightness,
736 .update_status = update_bl_status,
739 static int asus_backlight_notify(struct asus_laptop *asus)
741 struct backlight_device *bd = asus->backlight_device;
742 int old = bd->props.brightness;
744 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
749 static int asus_backlight_init(struct asus_laptop *asus)
751 struct backlight_device *bd;
752 struct backlight_properties props;
754 if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
755 acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
758 memset(&props, 0, sizeof(struct backlight_properties));
759 props.max_brightness = 15;
760 props.type = BACKLIGHT_PLATFORM;
762 bd = backlight_device_register(ASUS_LAPTOP_FILE,
763 &asus->platform_device->dev, asus,
764 &asusbl_ops, &props);
766 pr_err("Could not register asus backlight device\n");
767 asus->backlight_device = NULL;
771 asus->backlight_device = bd;
772 bd->props.brightness = asus_read_brightness(bd);
773 bd->props.power = FB_BLANK_UNBLANK;
774 backlight_update_status(bd);
778 static void asus_backlight_exit(struct asus_laptop *asus)
780 if (asus->backlight_device)
781 backlight_device_unregister(asus->backlight_device);
782 asus->backlight_device = NULL;
786 * Platform device handlers
790 * We write our info in page, we begin at offset off and cannot write more
791 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
792 * number of bytes written in page
794 static ssize_t show_infos(struct device *dev,
795 struct device_attribute *attr, char *page)
797 struct asus_laptop *asus = dev_get_drvdata(dev);
799 unsigned long long temp;
800 char buf[16]; /* enough for all info */
801 acpi_status rv = AE_OK;
804 * We use the easy way, we don't care of off and count,
805 * so we don't set eof to 1
808 len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
809 len += sprintf(page + len, "Model reference : %s\n", asus->name);
811 * The SFUN method probably allows the original driver to get the list
812 * of features supported by a given model. For now, 0x0100 or 0x0800
813 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
814 * The significance of others is yet to be found.
816 rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
817 if (!ACPI_FAILURE(rv))
818 len += sprintf(page + len, "SFUN value : %#x\n",
821 * The HWRS method return informations about the hardware.
822 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
823 * 0x40 for WWAN, 0x10 for WIMAX.
824 * The significance of others is yet to be found.
825 * We don't currently use this for device detection, and it
826 * takes several seconds to run on some systems.
828 rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
829 if (!ACPI_FAILURE(rv))
830 len += sprintf(page + len, "HWRS value : %#x\n",
833 * Another value for userspace: the ASYM method returns 0x02 for
834 * battery low and 0x04 for battery critical, its readings tend to be
835 * more accurate than those provided by _BST.
836 * Note: since not all the laptops provide this method, errors are
839 rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
840 if (!ACPI_FAILURE(rv))
841 len += sprintf(page + len, "ASYM value : %#x\n",
843 if (asus->dsdt_info) {
844 snprintf(buf, 16, "%d", asus->dsdt_info->length);
845 len += sprintf(page + len, "DSDT length : %s\n", buf);
846 snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
847 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
848 snprintf(buf, 16, "%d", asus->dsdt_info->revision);
849 len += sprintf(page + len, "DSDT revision : %s\n", buf);
850 snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
851 len += sprintf(page + len, "OEM id : %s\n", buf);
852 snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
853 len += sprintf(page + len, "OEM table id : %s\n", buf);
854 snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
855 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
856 snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
857 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
858 snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
859 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
865 static int parse_arg(const char *buf, unsigned long count, int *val)
871 if (sscanf(buf, "%i", val) != 1)
876 static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
877 const char *buf, size_t count,
883 rv = parse_arg(buf, count, &value);
887 if (write_acpi_int(asus->handle, method, value))
895 static ssize_t show_ledd(struct device *dev,
896 struct device_attribute *attr, char *buf)
898 struct asus_laptop *asus = dev_get_drvdata(dev);
900 return sprintf(buf, "0x%08x\n", asus->ledd_status);
903 static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
904 const char *buf, size_t count)
906 struct asus_laptop *asus = dev_get_drvdata(dev);
909 rv = parse_arg(buf, count, &value);
911 if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
912 pr_warn("LED display write failed\n");
915 asus->ledd_status = (u32) value;
923 static int asus_wireless_status(struct asus_laptop *asus, int mask)
925 unsigned long long status;
926 acpi_status rv = AE_OK;
928 if (!asus->have_rsts)
929 return (asus->wireless_status & mask) ? 1 : 0;
931 rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
933 if (ACPI_FAILURE(rv)) {
934 pr_warn("Error reading Wireless status\n");
937 return !!(status & mask);
943 static int asus_wlan_set(struct asus_laptop *asus, int status)
945 if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
946 pr_warn("Error setting wlan status to %d\n", status);
952 static ssize_t show_wlan(struct device *dev,
953 struct device_attribute *attr, char *buf)
955 struct asus_laptop *asus = dev_get_drvdata(dev);
957 return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
960 static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
961 const char *buf, size_t count)
963 struct asus_laptop *asus = dev_get_drvdata(dev);
965 return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
971 static int asus_bluetooth_set(struct asus_laptop *asus, int status)
973 if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
974 pr_warn("Error setting bluetooth status to %d\n", status);
980 static ssize_t show_bluetooth(struct device *dev,
981 struct device_attribute *attr, char *buf)
983 struct asus_laptop *asus = dev_get_drvdata(dev);
985 return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
988 static ssize_t store_bluetooth(struct device *dev,
989 struct device_attribute *attr, const char *buf,
992 struct asus_laptop *asus = dev_get_drvdata(dev);
994 return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1000 static int asus_wimax_set(struct asus_laptop *asus, int status)
1002 if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1003 pr_warn("Error setting wimax status to %d\n", status);
1009 static ssize_t show_wimax(struct device *dev,
1010 struct device_attribute *attr, char *buf)
1012 struct asus_laptop *asus = dev_get_drvdata(dev);
1014 return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1017 static ssize_t store_wimax(struct device *dev,
1018 struct device_attribute *attr, const char *buf,
1021 struct asus_laptop *asus = dev_get_drvdata(dev);
1023 return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1029 static int asus_wwan_set(struct asus_laptop *asus, int status)
1031 if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1032 pr_warn("Error setting wwan status to %d\n", status);
1038 static ssize_t show_wwan(struct device *dev,
1039 struct device_attribute *attr, char *buf)
1041 struct asus_laptop *asus = dev_get_drvdata(dev);
1043 return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1046 static ssize_t store_wwan(struct device *dev,
1047 struct device_attribute *attr, const char *buf,
1050 struct asus_laptop *asus = dev_get_drvdata(dev);
1052 return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1058 static void asus_set_display(struct asus_laptop *asus, int value)
1060 /* no sanity check needed for now */
1061 if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1062 pr_warn("Error setting display\n");
1067 * Experimental support for display switching. As of now: 1 should activate
1068 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1069 * Any combination (bitwise) of these will suffice. I never actually tested 4
1070 * displays hooked up simultaneously, so be warned. See the acpi4asus README
1073 static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
1074 const char *buf, size_t count)
1076 struct asus_laptop *asus = dev_get_drvdata(dev);
1079 rv = parse_arg(buf, count, &value);
1081 asus_set_display(asus, value);
1088 static void asus_als_switch(struct asus_laptop *asus, int value)
1092 if (asus->is_pega_lucid) {
1093 ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1095 ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1097 ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1100 pr_warning("Error setting light sensor switch\n");
1102 asus->light_switch = value;
1105 static ssize_t show_lssw(struct device *dev,
1106 struct device_attribute *attr, char *buf)
1108 struct asus_laptop *asus = dev_get_drvdata(dev);
1110 return sprintf(buf, "%d\n", asus->light_switch);
1113 static ssize_t store_lssw(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_als_switch(asus, value ? 1 : 0);
1126 static void asus_als_level(struct asus_laptop *asus, int value)
1128 if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1129 pr_warn("Error setting light sensor level\n");
1130 asus->light_level = value;
1133 static ssize_t show_lslvl(struct device *dev,
1134 struct device_attribute *attr, char *buf)
1136 struct asus_laptop *asus = dev_get_drvdata(dev);
1138 return sprintf(buf, "%d\n", asus->light_level);
1141 static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
1142 const char *buf, size_t count)
1144 struct asus_laptop *asus = dev_get_drvdata(dev);
1147 rv = parse_arg(buf, count, &value);
1149 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1150 /* 0 <= value <= 15 */
1151 asus_als_level(asus, value);
1157 static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1159 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1160 int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1163 union acpi_object *obj = buffer.pointer;
1164 if (obj && obj->type == ACPI_TYPE_INTEGER)
1165 *result = obj->integer.value;
1172 static ssize_t show_lsvalue(struct device *dev,
1173 struct device_attribute *attr, char *buf)
1175 struct asus_laptop *asus = dev_get_drvdata(dev);
1178 err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1180 err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1182 return sprintf(buf, "%d\n", 10 * hi + lo);
1189 static int asus_gps_status(struct asus_laptop *asus)
1191 unsigned long long status;
1192 acpi_status rv = AE_OK;
1194 rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1196 if (ACPI_FAILURE(rv)) {
1197 pr_warn("Error reading GPS status\n");
1203 static int asus_gps_switch(struct asus_laptop *asus, int status)
1205 const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1207 if (write_acpi_int(asus->handle, meth, 0x02))
1212 static ssize_t show_gps(struct device *dev,
1213 struct device_attribute *attr, char *buf)
1215 struct asus_laptop *asus = dev_get_drvdata(dev);
1217 return sprintf(buf, "%d\n", asus_gps_status(asus));
1220 static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
1221 const char *buf, size_t count)
1223 struct asus_laptop *asus = dev_get_drvdata(dev);
1227 rv = parse_arg(buf, count, &value);
1230 ret = asus_gps_switch(asus, !!value);
1233 rfkill_set_sw_state(asus->gps_rfkill, !value);
1240 static int asus_gps_rfkill_set(void *data, bool blocked)
1242 struct asus_laptop *asus = data;
1244 return asus_gps_switch(asus, !blocked);
1247 static const struct rfkill_ops asus_gps_rfkill_ops = {
1248 .set_block = asus_gps_rfkill_set,
1251 static void asus_rfkill_exit(struct asus_laptop *asus)
1253 if (asus->gps_rfkill) {
1254 rfkill_unregister(asus->gps_rfkill);
1255 rfkill_destroy(asus->gps_rfkill);
1256 asus->gps_rfkill = NULL;
1260 static int asus_rfkill_init(struct asus_laptop *asus)
1264 if (acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) ||
1265 acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) ||
1266 acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1269 asus->gps_rfkill = rfkill_alloc("asus-gps", &asus->platform_device->dev,
1271 &asus_gps_rfkill_ops, asus);
1272 if (!asus->gps_rfkill)
1275 result = rfkill_register(asus->gps_rfkill);
1277 rfkill_destroy(asus->gps_rfkill);
1278 asus->gps_rfkill = NULL;
1284 static int pega_rfkill_set(void *data, bool blocked)
1286 struct asus_pega_rfkill *pega_rfk = data;
1288 int ret = asus_pega_lucid_set(pega_rfk->asus, pega_rfk->control_id, !blocked);
1289 pr_warn("Setting rfkill %d, to %d; returned %d\n", pega_rfk->control_id, !blocked, ret);
1294 static const struct rfkill_ops pega_rfkill_ops = {
1295 .set_block = pega_rfkill_set,
1298 static void pega_rfkill_terminate(struct asus_pega_rfkill *pega_rfk)
1300 pr_warn("Terminating %d\n", pega_rfk->control_id);
1301 if (pega_rfk->rfkill) {
1302 rfkill_unregister(pega_rfk->rfkill);
1303 rfkill_destroy(pega_rfk->rfkill);
1304 pega_rfk->rfkill = NULL;
1308 static void pega_rfkill_exit(struct asus_laptop *asus)
1310 pega_rfkill_terminate(&asus->wwanrfk);
1311 pega_rfkill_terminate(&asus->btrfk);
1312 pega_rfkill_terminate(&asus->wlanrfk);
1315 static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_pega_rfkill *pega_rfk,
1316 const char *name, int controlid, int rfkill_type)
1320 pr_warn("Setting up rfk %s, control %d, type %d\n", name, controlid, rfkill_type);
1321 pega_rfk->control_id = controlid;
1322 pega_rfk->asus = asus;
1323 pega_rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1324 rfkill_type, &pega_rfkill_ops, pega_rfk);
1325 if (!pega_rfk->rfkill)
1328 result = rfkill_register(pega_rfk->rfkill);
1330 rfkill_destroy(pega_rfk->rfkill);
1331 pega_rfk->rfkill = NULL;
1337 static int pega_rfkill_init(struct asus_laptop *asus)
1341 if(!asus->is_pega_lucid)
1344 ret = pega_rfkill_setup(asus, &asus->wlanrfk, "pega-wlan", PEGA_WLAN, RFKILL_TYPE_WLAN);
1347 ret = pega_rfkill_setup(asus, &asus->btrfk, "pega-bt", PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1350 ret = pega_rfkill_setup(asus, &asus->wwanrfk, "pega-wwan", PEGA_WWAN, RFKILL_TYPE_WWAN);
1354 pr_warn("Pega rfkill init succeeded\n");
1357 pega_rfkill_terminate(&asus->btrfk);
1359 pega_rfkill_terminate(&asus->wlanrfk);
1365 * Input device (i.e. hotkeys)
1367 static void asus_input_notify(struct asus_laptop *asus, int event)
1370 sparse_keymap_report_event(asus->inputdev, event, 1, true);
1373 static int asus_input_init(struct asus_laptop *asus)
1375 struct input_dev *input;
1378 input = input_allocate_device();
1380 pr_info("Unable to allocate input device\n");
1383 input->name = "Asus Laptop extra buttons";
1384 input->phys = ASUS_LAPTOP_FILE "/input0";
1385 input->id.bustype = BUS_HOST;
1386 input->dev.parent = &asus->platform_device->dev;
1388 error = sparse_keymap_setup(input, asus_keymap, NULL);
1390 pr_err("Unable to setup input device keymap\n");
1393 error = input_register_device(input);
1395 pr_info("Unable to register input device\n");
1396 goto err_free_keymap;
1399 asus->inputdev = input;
1403 sparse_keymap_free(input);
1405 input_free_device(input);
1409 static void asus_input_exit(struct asus_laptop *asus)
1411 if (asus->inputdev) {
1412 sparse_keymap_free(asus->inputdev);
1413 input_unregister_device(asus->inputdev);
1415 asus->inputdev = NULL;
1421 static void asus_acpi_notify(struct acpi_device *device, u32 event)
1423 struct asus_laptop *asus = acpi_driver_data(device);
1426 /* TODO Find a better way to handle events count. */
1427 count = asus->event_count[event % 128]++;
1428 acpi_bus_generate_proc_event(asus->device, event, count);
1429 acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1430 dev_name(&asus->device->dev), event,
1433 /* Brightness events are special */
1434 if (event >= ATKD_BR_MIN && event <= ATKD_BR_MAX) {
1436 /* Ignore them completely if the acpi video driver is used */
1437 if (asus->backlight_device != NULL) {
1438 /* Update the backlight device. */
1439 asus_backlight_notify(asus);
1444 /* Accelerometer "coarse orientation change" event */
1445 if (asus->pega_accel_poll && event == 0xEA) {
1446 kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
1451 asus_input_notify(asus, event);
1454 static DEVICE_ATTR(infos, S_IRUGO, show_infos, NULL);
1455 static DEVICE_ATTR(wlan, S_IRUGO | S_IWUSR, show_wlan, store_wlan);
1456 static DEVICE_ATTR(bluetooth, S_IRUGO | S_IWUSR,
1457 show_bluetooth, store_bluetooth);
1458 static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax);
1459 static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan);
1460 static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp);
1461 static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
1462 static DEVICE_ATTR(ls_value, S_IRUGO, show_lsvalue, NULL);
1463 static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
1464 static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
1465 static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
1467 static struct attribute *asus_attributes[] = {
1468 &dev_attr_infos.attr,
1469 &dev_attr_wlan.attr,
1470 &dev_attr_bluetooth.attr,
1471 &dev_attr_wimax.attr,
1472 &dev_attr_wwan.attr,
1473 &dev_attr_display.attr,
1474 &dev_attr_ledd.attr,
1475 &dev_attr_ls_value.attr,
1476 &dev_attr_ls_level.attr,
1477 &dev_attr_ls_switch.attr,
1482 static mode_t asus_sysfs_is_visible(struct kobject *kobj,
1483 struct attribute *attr,
1486 struct device *dev = container_of(kobj, struct device, kobj);
1487 struct platform_device *pdev = to_platform_device(dev);
1488 struct asus_laptop *asus = platform_get_drvdata(pdev);
1489 acpi_handle handle = asus->handle;
1492 if (asus->is_pega_lucid) {
1493 /* no ls_level interface on the Lucid */
1494 if (attr == &dev_attr_ls_switch.attr)
1496 else if (attr == &dev_attr_ls_level.attr)
1505 if (attr == &dev_attr_wlan.attr) {
1506 supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1508 } else if (attr == &dev_attr_bluetooth.attr) {
1509 supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1511 } else if (attr == &dev_attr_display.attr) {
1512 supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1514 } else if (attr == &dev_attr_wimax.attr) {
1516 !acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1518 } else if (attr == &dev_attr_wwan.attr) {
1519 supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1521 } else if (attr == &dev_attr_ledd.attr) {
1522 supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1524 } else if (attr == &dev_attr_ls_switch.attr ||
1525 attr == &dev_attr_ls_level.attr) {
1526 supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1527 !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1528 } else if (attr == &dev_attr_ls_value.attr) {
1529 supported = asus->is_pega_lucid;
1530 } else if (attr == &dev_attr_gps.attr) {
1531 supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1532 !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1533 !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1538 return supported ? attr->mode : 0;
1542 static const struct attribute_group asus_attr_group = {
1543 .is_visible = asus_sysfs_is_visible,
1544 .attrs = asus_attributes,
1547 static int asus_platform_init(struct asus_laptop *asus)
1551 asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1552 if (!asus->platform_device)
1554 platform_set_drvdata(asus->platform_device, asus);
1556 result = platform_device_add(asus->platform_device);
1558 goto fail_platform_device;
1560 result = sysfs_create_group(&asus->platform_device->dev.kobj,
1568 platform_device_del(asus->platform_device);
1569 fail_platform_device:
1570 platform_device_put(asus->platform_device);
1574 static void asus_platform_exit(struct asus_laptop *asus)
1576 sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1577 platform_device_unregister(asus->platform_device);
1580 static struct platform_driver platform_driver = {
1582 .name = ASUS_LAPTOP_FILE,
1583 .owner = THIS_MODULE,
1588 * This function is used to initialize the context with right values. In this
1589 * method, we can make all the detection we want, and modify the asus_laptop
1592 static int asus_laptop_get_info(struct asus_laptop *asus)
1594 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1595 union acpi_object *model = NULL;
1596 unsigned long long bsts_result;
1597 char *string = NULL;
1601 * Get DSDT headers early enough to allow for differentiating between
1602 * models, but late enough to allow acpi_bus_register_driver() to fail
1603 * before doing anything ACPI-specific. Should we encounter a machine,
1604 * which needs special handling (i.e. its hotkey device has a different
1605 * HID), this bit will be moved.
1607 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1608 if (ACPI_FAILURE(status))
1609 pr_warn("Couldn't get the DSDT table header\n");
1611 /* We have to write 0 on init this far for all ASUS models */
1612 if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1613 pr_err("Hotkey initialization failed\n");
1617 /* This needs to be called for some laptops to init properly */
1619 acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1620 if (ACPI_FAILURE(status))
1621 pr_warn("Error calling BSTS\n");
1622 else if (bsts_result)
1623 pr_notice("BSTS called, 0x%02x returned\n",
1624 (uint) bsts_result);
1627 if (write_acpi_int(asus->handle, "CWAP", wapf))
1628 pr_err("Error calling CWAP(%d)\n", wapf);
1630 * Try to match the object returned by INIT to the specific model.
1631 * Handle every possible object (or the lack of thereof) the DSDT
1632 * writers might throw at us. When in trouble, we pass NULL to
1633 * asus_model_match() and try something completely different.
1635 if (buffer.pointer) {
1636 model = buffer.pointer;
1637 switch (model->type) {
1638 case ACPI_TYPE_STRING:
1639 string = model->string.pointer;
1641 case ACPI_TYPE_BUFFER:
1642 string = model->buffer.pointer;
1649 asus->name = kstrdup(string, GFP_KERNEL);
1651 kfree(buffer.pointer);
1656 pr_notice(" %s model detected\n", string);
1658 if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1659 asus->have_rsts = true;
1666 static int __devinit asus_acpi_init(struct asus_laptop *asus)
1670 result = acpi_bus_get_status(asus->device);
1673 if (!asus->device->status.present) {
1674 pr_err("Hotkey device not present, aborting\n");
1678 result = asus_laptop_get_info(asus);
1682 /* WLED and BLED are on by default */
1683 if (bluetooth_status >= 0)
1684 asus_bluetooth_set(asus, !!bluetooth_status);
1686 if (wlan_status >= 0)
1687 asus_wlan_set(asus, !!wlan_status);
1689 if (wimax_status >= 0)
1690 asus_wimax_set(asus, !!wimax_status);
1692 if (wwan_status >= 0)
1693 asus_wwan_set(asus, !!wwan_status);
1695 /* Keyboard Backlight is on by default */
1696 if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1697 asus_kled_set(asus, 1);
1699 /* LED display is off by default */
1700 asus->ledd_status = 0xFFF;
1702 /* Set initial values of light sensor and level */
1703 asus->light_switch = !!als_status;
1704 asus->light_level = 5; /* level 5 for sensor sensitivity */
1706 if (asus->is_pega_lucid) {
1707 asus_als_switch(asus, asus->light_switch);
1708 } else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1709 !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1710 asus_als_switch(asus, asus->light_switch);
1711 asus_als_level(asus, asus->light_level);
1717 static void __devinit asus_dmi_check(void)
1721 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1725 /* On L1400B WLED control the sound card, don't mess with it ... */
1726 if (strncmp(model, "L1400B", 6) == 0) {
1731 static bool asus_device_present;
1733 static int __devinit asus_acpi_add(struct acpi_device *device)
1735 struct asus_laptop *asus;
1738 pr_notice("Asus Laptop Support version %s\n",
1739 ASUS_LAPTOP_VERSION);
1740 asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1743 asus->handle = device->handle;
1744 strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1745 strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1746 device->driver_data = asus;
1747 asus->device = device;
1751 result = asus_acpi_init(asus);
1756 * Need platform type detection first, then the platform
1757 * device. It is used as a parent for the sub-devices below.
1759 asus->is_pega_lucid = asus_check_pega_lucid(asus);
1760 result = asus_platform_init(asus);
1764 if (!acpi_video_backlight_support()) {
1765 result = asus_backlight_init(asus);
1767 goto fail_backlight;
1769 pr_info("Backlight controlled by ACPI video driver\n");
1771 result = asus_input_init(asus);
1775 result = asus_led_init(asus);
1779 result = asus_rfkill_init(asus);
1783 result = pega_accel_init(asus);
1784 if (result && result != -ENODEV)
1785 goto fail_pega_accel;
1787 result = pega_rfkill_init(asus);
1788 if (result && result != -ENODEV)
1789 goto fail_pega_rfkill;
1791 asus_device_present = true;
1795 pega_accel_exit(asus);
1797 asus_rfkill_exit(asus);
1799 asus_led_exit(asus);
1801 asus_input_exit(asus);
1803 asus_backlight_exit(asus);
1805 asus_platform_exit(asus);
1813 static int asus_acpi_remove(struct acpi_device *device, int type)
1815 struct asus_laptop *asus = acpi_driver_data(device);
1817 asus_backlight_exit(asus);
1818 asus_rfkill_exit(asus);
1819 asus_led_exit(asus);
1820 asus_input_exit(asus);
1821 pega_accel_exit(asus);
1822 pega_rfkill_exit(asus);
1823 asus_platform_exit(asus);
1830 static const struct acpi_device_id asus_device_ids[] = {
1835 MODULE_DEVICE_TABLE(acpi, asus_device_ids);
1837 static struct acpi_driver asus_acpi_driver = {
1838 .name = ASUS_LAPTOP_NAME,
1839 .class = ASUS_LAPTOP_CLASS,
1840 .owner = THIS_MODULE,
1841 .ids = asus_device_ids,
1842 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1844 .add = asus_acpi_add,
1845 .remove = asus_acpi_remove,
1846 .notify = asus_acpi_notify,
1850 static int __init asus_laptop_init(void)
1854 result = platform_driver_register(&platform_driver);
1858 result = acpi_bus_register_driver(&asus_acpi_driver);
1860 goto fail_acpi_driver;
1861 if (!asus_device_present) {
1863 goto fail_no_device;
1868 acpi_bus_unregister_driver(&asus_acpi_driver);
1870 platform_driver_unregister(&platform_driver);
1874 static void __exit asus_laptop_exit(void)
1876 acpi_bus_unregister_driver(&asus_acpi_driver);
1877 platform_driver_unregister(&platform_driver);
1880 module_init(asus_laptop_init);
1881 module_exit(asus_laptop_exit);