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85091b71 CC |
1 | /* |
2 | * asus-laptop.c - Asus Laptop Support | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor | |
6 | * Copyright (C) 2006 Corentin Chary | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | * | |
23 | * The development page for this driver is located at | |
24 | * http://sourceforge.net/projects/acpi4asus/ | |
25 | * | |
26 | * Credits: | |
27 | * Pontus Fuchs - Helper functions, cleanup | |
28 | * Johann Wiesner - Small compile fixes | |
29 | * John Belmonte - ACPI code for Toshiba laptop was a good starting point. | |
30 | * Eric Burghard - LED display support for W1N | |
31 | * Josh Green - Light Sens support | |
32 | * Thomas Tuttle - His first patch for led support was very helpfull | |
33 | * | |
34 | */ | |
35 | ||
36 | #include <linux/autoconf.h> | |
37 | #include <linux/kernel.h> | |
38 | #include <linux/module.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/err.h> | |
42 | #include <linux/proc_fs.h> | |
6b7091e7 CC |
43 | #include <linux/backlight.h> |
44 | #include <linux/fb.h> | |
be18cdab | 45 | #include <linux/leds.h> |
85091b71 CC |
46 | #include <linux/platform_device.h> |
47 | #include <acpi/acpi_drivers.h> | |
48 | #include <acpi/acpi_bus.h> | |
49 | #include <asm/uaccess.h> | |
50 | ||
51 | #define ASUS_LAPTOP_VERSION "0.40" | |
52 | ||
53 | #define ASUS_HOTK_NAME "Asus Laptop Support" | |
54 | #define ASUS_HOTK_CLASS "hotkey" | |
55 | #define ASUS_HOTK_DEVICE_NAME "Hotkey" | |
56 | #define ASUS_HOTK_HID "ATK0100" | |
57 | #define ASUS_HOTK_FILE "asus-laptop" | |
58 | #define ASUS_HOTK_PREFIX "\\_SB.ATKD." | |
59 | ||
6b7091e7 CC |
60 | /* |
61 | * Some events we use, same for all Asus | |
62 | */ | |
63 | #define ATKD_BR_UP 0x10 | |
64 | #define ATKD_BR_DOWN 0x20 | |
65 | #define ATKD_LCD_ON 0x33 | |
66 | #define ATKD_LCD_OFF 0x34 | |
67 | ||
4564de17 CC |
68 | /* |
69 | * Known bits returned by \_SB.ATKD.HWRS | |
70 | */ | |
71 | #define WL_HWRS 0x80 | |
72 | #define BT_HWRS 0x100 | |
73 | ||
be18cdab CC |
74 | /* |
75 | * Flags for hotk status | |
4564de17 | 76 | * WL_ON and BT_ON are also used for wireless_status() |
be18cdab | 77 | */ |
4564de17 CC |
78 | #define WL_ON 0x01 //internal Wifi |
79 | #define BT_ON 0x02 //internal Bluetooth | |
be18cdab CC |
80 | #define MLED_ON 0x04 //mail LED |
81 | #define TLED_ON 0x08 //touchpad LED | |
82 | #define RLED_ON 0x10 //Record LED | |
83 | #define PLED_ON 0x20 //Phone LED | |
6b7091e7 | 84 | #define LCD_ON 0x40 //LCD backlight |
be18cdab | 85 | |
85091b71 CC |
86 | #define ASUS_LOG ASUS_HOTK_FILE ": " |
87 | #define ASUS_ERR KERN_ERR ASUS_LOG | |
88 | #define ASUS_WARNING KERN_WARNING ASUS_LOG | |
89 | #define ASUS_NOTICE KERN_NOTICE ASUS_LOG | |
90 | #define ASUS_INFO KERN_INFO ASUS_LOG | |
91 | #define ASUS_DEBUG KERN_DEBUG ASUS_LOG | |
92 | ||
93 | MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary"); | |
94 | MODULE_DESCRIPTION(ASUS_HOTK_NAME); | |
95 | MODULE_LICENSE("GPL"); | |
96 | ||
97 | #define ASUS_HANDLE(object, paths...) \ | |
98 | static acpi_handle object##_handle = NULL; \ | |
99 | static char *object##_paths[] = { paths } | |
100 | ||
be18cdab CC |
101 | /* LED */ |
102 | ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED"); | |
103 | ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED"); | |
104 | ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */ | |
105 | ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */ | |
106 | ||
722ad971 CC |
107 | /* LEDD */ |
108 | ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM"); | |
109 | ||
4564de17 CC |
110 | /* Bluetooth and WLAN |
111 | * WLED and BLED are not handled like other XLED, because in some dsdt | |
112 | * they also control the WLAN/Bluetooth device. | |
113 | */ | |
114 | ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); | |
115 | ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); | |
116 | ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ | |
117 | ||
6b7091e7 CC |
118 | /* Brightness */ |
119 | ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); | |
120 | ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); | |
121 | ||
122 | /* Backlight */ | |
123 | ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ | |
124 | "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ | |
125 | "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ | |
126 | "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ | |
127 | "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ | |
128 | "\\_SB.PCI0.PX40.Q10", /* S1x */ | |
129 | "\\Q10"); /* A2x, L2D, L3D, M2E */ | |
130 | ||
78127b4a CC |
131 | /* Display */ |
132 | ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); | |
133 | ASUS_HANDLE(display_get, | |
134 | "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G | |
135 | M6A M6V VX-1 V6J V6V W3Z */ | |
136 | "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V | |
137 | S5A M5A z33A W1Jc W2V */ | |
138 | "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */ | |
139 | "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */ | |
140 | "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */ | |
141 | "\\_SB.PCI0.VGA.GETD", /* Z96F */ | |
142 | "\\ACTD", /* A2D */ | |
143 | "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ | |
144 | "\\DNXT", /* P30 */ | |
145 | "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ | |
146 | "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */ | |
147 | ||
8b857353 CC |
148 | ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */ |
149 | ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */ | |
150 | ||
85091b71 CC |
151 | /* |
152 | * This is the main structure, we can use it to store anything interesting | |
153 | * about the hotk device | |
154 | */ | |
155 | struct asus_hotk { | |
156 | char *name; //laptop name | |
157 | struct acpi_device *device; //the device we are in | |
158 | acpi_handle handle; //the handle of the hotk device | |
159 | char status; //status of the hotk, for LEDs, ... | |
722ad971 | 160 | u32 ledd_status; //status of the LED display |
8b857353 CC |
161 | u8 light_level; //light sensor level |
162 | u8 light_switch; //light sensor switch value | |
85091b71 CC |
163 | u16 event_count[128]; //count for each event TODO make this better |
164 | }; | |
165 | ||
166 | /* | |
167 | * This header is made available to allow proper configuration given model, | |
168 | * revision number , ... this info cannot go in struct asus_hotk because it is | |
169 | * available before the hotk | |
170 | */ | |
171 | static struct acpi_table_header *asus_info; | |
172 | ||
173 | /* The actual device the driver binds to */ | |
174 | static struct asus_hotk *hotk; | |
175 | ||
176 | /* | |
177 | * The hotkey driver declaration | |
178 | */ | |
179 | static int asus_hotk_add(struct acpi_device *device); | |
180 | static int asus_hotk_remove(struct acpi_device *device, int type); | |
181 | static struct acpi_driver asus_hotk_driver = { | |
182 | .name = ASUS_HOTK_NAME, | |
183 | .class = ASUS_HOTK_CLASS, | |
184 | .ids = ASUS_HOTK_HID, | |
185 | .ops = { | |
186 | .add = asus_hotk_add, | |
187 | .remove = asus_hotk_remove, | |
188 | }, | |
189 | }; | |
190 | ||
6b7091e7 CC |
191 | /* The backlight device /sys/class/backlight */ |
192 | static struct backlight_device *asus_backlight_device; | |
193 | ||
194 | /* | |
195 | * The backlight class declaration | |
196 | */ | |
197 | static int read_brightness(struct backlight_device *bd); | |
198 | static int update_bl_status(struct backlight_device *bd); | |
199 | static struct backlight_properties asusbl_data = { | |
200 | .owner = THIS_MODULE, | |
201 | .get_brightness = read_brightness, | |
202 | .update_status = update_bl_status, | |
203 | .max_brightness = 15, | |
204 | }; | |
205 | ||
be18cdab CC |
206 | /* These functions actually update the LED's, and are called from a |
207 | * workqueue. By doing this as separate work rather than when the LED | |
208 | * subsystem asks, we avoid messing with the Asus ACPI stuff during a | |
209 | * potentially bad time, such as a timer interrupt. */ | |
210 | static struct workqueue_struct *led_workqueue; | |
211 | ||
212 | #define ASUS_LED(object, ledname) \ | |
213 | static void object##_led_set(struct led_classdev *led_cdev, \ | |
214 | enum led_brightness value); \ | |
215 | static void object##_led_update(struct work_struct *ignored); \ | |
216 | static int object##_led_wk; \ | |
217 | DECLARE_WORK(object##_led_work, object##_led_update); \ | |
218 | static struct led_classdev object##_led = { \ | |
219 | .name = "asus:" ledname, \ | |
220 | .brightness_set = object##_led_set, \ | |
221 | } | |
222 | ||
223 | ASUS_LED(mled, "mail"); | |
224 | ASUS_LED(tled, "touchpad"); | |
225 | ASUS_LED(rled, "record"); | |
226 | ASUS_LED(pled, "phone"); | |
227 | ||
85091b71 CC |
228 | /* |
229 | * This function evaluates an ACPI method, given an int as parameter, the | |
230 | * method is searched within the scope of the handle, can be NULL. The output | |
231 | * of the method is written is output, which can also be NULL | |
232 | * | |
233 | * returns 1 if write is successful, 0 else. | |
234 | */ | |
235 | static int write_acpi_int(acpi_handle handle, const char *method, int val, | |
236 | struct acpi_buffer *output) | |
237 | { | |
238 | struct acpi_object_list params; //list of input parameters (an int here) | |
239 | union acpi_object in_obj; //the only param we use | |
240 | acpi_status status; | |
241 | ||
242 | params.count = 1; | |
243 | params.pointer = &in_obj; | |
244 | in_obj.type = ACPI_TYPE_INTEGER; | |
245 | in_obj.integer.value = val; | |
246 | ||
247 | status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); | |
248 | return (status == AE_OK); | |
249 | } | |
250 | ||
251 | static int read_acpi_int(acpi_handle handle, const char *method, int *val, | |
252 | struct acpi_object_list *params) | |
253 | { | |
254 | struct acpi_buffer output; | |
255 | union acpi_object out_obj; | |
256 | acpi_status status; | |
257 | ||
258 | output.length = sizeof(out_obj); | |
259 | output.pointer = &out_obj; | |
260 | ||
261 | status = acpi_evaluate_object(handle, (char *)method, params, &output); | |
262 | *val = out_obj.integer.value; | |
263 | return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER); | |
264 | } | |
265 | ||
4564de17 CC |
266 | static int read_wireless_status(int mask) { |
267 | int status; | |
268 | ||
269 | if (!wireless_status_handle) | |
270 | return (hotk->status & mask) ? 1 : 0; | |
271 | ||
272 | if (read_acpi_int(wireless_status_handle, NULL, &status, NULL)) { | |
273 | return (status & mask) ? 1 : 0; | |
274 | } else | |
275 | printk(ASUS_WARNING "Error reading Wireless status\n"); | |
276 | ||
277 | return (hotk->status & mask) ? 1 : 0; | |
278 | } | |
279 | ||
be18cdab CC |
280 | /* Generic LED functions */ |
281 | static int read_status(int mask) | |
282 | { | |
4564de17 CC |
283 | /* There is a special method for both wireless devices */ |
284 | if (mask == BT_ON || mask == WL_ON) | |
285 | return read_wireless_status(mask); | |
286 | ||
be18cdab CC |
287 | return (hotk->status & mask) ? 1 : 0; |
288 | } | |
289 | ||
290 | static void write_status(acpi_handle handle, int out, int mask, | |
4564de17 | 291 | int invert) |
be18cdab CC |
292 | { |
293 | hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); | |
294 | ||
295 | if (invert) /* invert target value */ | |
296 | out = !out & 0x1; | |
297 | ||
298 | if (handle && !write_acpi_int(handle, NULL, out, NULL)) | |
299 | printk(ASUS_WARNING " write failed\n"); | |
300 | } | |
301 | ||
302 | /* /sys/class/led handlers */ | |
303 | #define ASUS_LED_HANDLER(object, mask, invert) \ | |
304 | static void object##_led_set(struct led_classdev *led_cdev, \ | |
305 | enum led_brightness value) \ | |
306 | { \ | |
307 | object##_led_wk = value; \ | |
308 | queue_work(led_workqueue, &object##_led_work); \ | |
309 | } \ | |
310 | static void object##_led_update(struct work_struct *ignored) \ | |
311 | { \ | |
312 | int value = object##_led_wk; \ | |
313 | write_status(object##_set_handle, value, (mask), (invert)); \ | |
314 | } | |
315 | ||
316 | ASUS_LED_HANDLER(mled, MLED_ON, 1); | |
317 | ASUS_LED_HANDLER(pled, PLED_ON, 0); | |
318 | ASUS_LED_HANDLER(rled, RLED_ON, 0); | |
319 | ASUS_LED_HANDLER(tled, TLED_ON, 0); | |
320 | ||
6b7091e7 CC |
321 | static int get_lcd_state(void) |
322 | { | |
323 | return read_status(LCD_ON); | |
324 | } | |
325 | ||
326 | static int set_lcd_state(int value) | |
327 | { | |
328 | int lcd = 0; | |
329 | acpi_status status = 0; | |
330 | ||
331 | lcd = value ? 1 : 0; | |
332 | ||
333 | if (lcd == get_lcd_state()) | |
334 | return 0; | |
335 | ||
336 | if(lcd_switch_handle) { | |
337 | status = acpi_evaluate_object(lcd_switch_handle, | |
338 | NULL, NULL, NULL); | |
339 | ||
340 | if (ACPI_FAILURE(status)) | |
341 | printk(ASUS_WARNING "Error switching LCD\n"); | |
342 | } | |
343 | ||
344 | write_status(NULL, lcd, LCD_ON, 0); | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static void lcd_blank(int blank) | |
349 | { | |
350 | struct backlight_device *bd = asus_backlight_device; | |
351 | ||
352 | if(bd) { | |
353 | down(&bd->sem); | |
354 | if(likely(bd->props)) { | |
355 | bd->props->power = blank; | |
356 | if(likely(bd->props->update_status)) | |
357 | bd->props->update_status(bd); | |
358 | } | |
359 | up(&bd->sem); | |
360 | } | |
361 | } | |
362 | ||
363 | static int read_brightness(struct backlight_device *bd) | |
364 | { | |
365 | int value; | |
366 | ||
367 | if (!read_acpi_int(brightness_get_handle, NULL, &value, NULL)) | |
368 | printk(ASUS_WARNING "Error reading brightness\n"); | |
369 | ||
370 | return value; | |
371 | } | |
372 | ||
373 | static int set_brightness(struct backlight_device *bd, int value) | |
374 | { | |
375 | int ret = 0; | |
376 | ||
377 | value = (0 < value) ? ((15 < value) ? 15 : value) : 0; | |
378 | /* 0 <= value <= 15 */ | |
379 | ||
380 | if (!write_acpi_int(brightness_set_handle, NULL, value, NULL)) { | |
381 | printk(ASUS_WARNING "Error changing brightness\n"); | |
382 | ret = -EIO; | |
383 | } | |
384 | ||
385 | return ret; | |
386 | } | |
387 | ||
388 | static int update_bl_status(struct backlight_device *bd) | |
389 | { | |
390 | int rv; | |
391 | int value = bd->props->brightness; | |
392 | ||
393 | rv = set_brightness(bd, value); | |
394 | if(rv) | |
395 | return rv; | |
396 | ||
397 | value = (bd->props->power == FB_BLANK_UNBLANK) ? 1 : 0; | |
398 | return set_lcd_state(value); | |
399 | } | |
400 | ||
85091b71 CC |
401 | /* |
402 | * Platform device handlers | |
403 | */ | |
404 | ||
405 | /* | |
406 | * We write our info in page, we begin at offset off and cannot write more | |
407 | * than count bytes. We set eof to 1 if we handle those 2 values. We return the | |
408 | * number of bytes written in page | |
409 | */ | |
410 | static ssize_t show_infos(struct device *dev, | |
411 | struct device_attribute *attr, char *page) | |
412 | { | |
413 | int len = 0; | |
414 | int temp; | |
415 | char buf[16]; //enough for all info | |
416 | /* | |
417 | * We use the easy way, we don't care of off and count, so we don't set eof | |
418 | * to 1 | |
419 | */ | |
420 | ||
421 | len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); | |
422 | len += sprintf(page + len, "Model reference : %s\n", hotk->name); | |
423 | /* | |
424 | * The SFUN method probably allows the original driver to get the list | |
425 | * of features supported by a given model. For now, 0x0100 or 0x0800 | |
426 | * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. | |
427 | * The significance of others is yet to be found. | |
428 | */ | |
429 | if (read_acpi_int(hotk->handle, "SFUN", &temp, NULL)) | |
430 | len += | |
431 | sprintf(page + len, "SFUN value : 0x%04x\n", temp); | |
432 | /* | |
433 | * Another value for userspace: the ASYM method returns 0x02 for | |
434 | * battery low and 0x04 for battery critical, its readings tend to be | |
435 | * more accurate than those provided by _BST. | |
436 | * Note: since not all the laptops provide this method, errors are | |
437 | * silently ignored. | |
438 | */ | |
439 | if (read_acpi_int(hotk->handle, "ASYM", &temp, NULL)) | |
440 | len += | |
441 | sprintf(page + len, "ASYM value : 0x%04x\n", temp); | |
442 | if (asus_info) { | |
443 | snprintf(buf, 16, "%d", asus_info->length); | |
444 | len += sprintf(page + len, "DSDT length : %s\n", buf); | |
445 | snprintf(buf, 16, "%d", asus_info->checksum); | |
446 | len += sprintf(page + len, "DSDT checksum : %s\n", buf); | |
447 | snprintf(buf, 16, "%d", asus_info->revision); | |
448 | len += sprintf(page + len, "DSDT revision : %s\n", buf); | |
449 | snprintf(buf, 7, "%s", asus_info->oem_id); | |
450 | len += sprintf(page + len, "OEM id : %s\n", buf); | |
451 | snprintf(buf, 9, "%s", asus_info->oem_table_id); | |
452 | len += sprintf(page + len, "OEM table id : %s\n", buf); | |
453 | snprintf(buf, 16, "%x", asus_info->oem_revision); | |
454 | len += sprintf(page + len, "OEM revision : 0x%s\n", buf); | |
455 | snprintf(buf, 5, "%s", asus_info->asl_compiler_id); | |
456 | len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); | |
457 | snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); | |
458 | len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); | |
459 | } | |
460 | ||
461 | return len; | |
462 | } | |
463 | ||
464 | static int parse_arg(const char *buf, unsigned long count, int *val) | |
465 | { | |
466 | if (!count) | |
467 | return 0; | |
468 | if (count > 31) | |
469 | return -EINVAL; | |
470 | if (sscanf(buf, "%i", val) != 1) | |
471 | return -EINVAL; | |
472 | return count; | |
473 | } | |
474 | ||
4564de17 CC |
475 | static ssize_t store_status(const char *buf, size_t count, |
476 | acpi_handle handle, int mask, int invert) | |
477 | { | |
478 | int rv, value; | |
479 | int out = 0; | |
480 | ||
481 | rv = parse_arg(buf, count, &value); | |
482 | if (rv > 0) | |
483 | out = value ? 1 : 0; | |
484 | ||
485 | write_status(handle, out, mask, invert); | |
486 | ||
487 | return rv; | |
488 | } | |
489 | ||
722ad971 CC |
490 | /* |
491 | * LEDD display | |
492 | */ | |
493 | static ssize_t show_ledd(struct device *dev, | |
494 | struct device_attribute *attr, char *buf) | |
495 | { | |
496 | return sprintf(buf, "0x%08x\n", hotk->ledd_status); | |
497 | } | |
498 | ||
499 | static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, | |
500 | const char *buf, size_t count) | |
501 | { | |
502 | int rv, value; | |
503 | ||
504 | rv = parse_arg(buf, count, &value); | |
505 | if (rv > 0) { | |
506 | if (!write_acpi_int(ledd_set_handle, NULL, value, NULL)) | |
507 | printk(ASUS_WARNING "LED display write failed\n"); | |
508 | else | |
509 | hotk->ledd_status = (u32) value; | |
510 | } | |
511 | return rv; | |
512 | } | |
513 | ||
4564de17 CC |
514 | /* |
515 | * WLAN | |
516 | */ | |
517 | static ssize_t show_wlan(struct device *dev, | |
518 | struct device_attribute *attr, char *buf) | |
519 | { | |
520 | return sprintf(buf, "%d\n", read_status(WL_ON)); | |
521 | } | |
522 | ||
523 | static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, | |
524 | const char *buf, size_t count) | |
525 | { | |
526 | return store_status(buf, count, wl_switch_handle, WL_ON, 0); | |
527 | } | |
528 | ||
529 | /* | |
530 | * Bluetooth | |
531 | */ | |
532 | static ssize_t show_bluetooth(struct device *dev, | |
533 | struct device_attribute *attr, char *buf) | |
534 | { | |
535 | return sprintf(buf, "%d\n", read_status(BT_ON)); | |
536 | } | |
537 | ||
538 | static ssize_t store_bluetooth(struct device *dev, struct device_attribute *attr, | |
539 | const char *buf, size_t count) | |
540 | { | |
541 | return store_status(buf, count, bt_switch_handle, BT_ON, 0); | |
542 | } | |
543 | ||
78127b4a CC |
544 | /* |
545 | * Display | |
546 | */ | |
547 | static void set_display(int value) | |
548 | { | |
549 | /* no sanity check needed for now */ | |
550 | if (!write_acpi_int(display_set_handle, NULL, value, NULL)) | |
551 | printk(ASUS_WARNING "Error setting display\n"); | |
552 | return; | |
553 | } | |
554 | ||
555 | static int read_display(void) | |
556 | { | |
557 | int value = 0; | |
558 | ||
559 | /* In most of the case, we know how to set the display, but sometime | |
560 | we can't read it */ | |
561 | if(display_get_handle) { | |
562 | if (!read_acpi_int(display_get_handle, NULL, &value, NULL)) | |
563 | printk(ASUS_WARNING "Error reading display status\n"); | |
564 | } | |
565 | ||
566 | value &= 0x0F; /* needed for some models, shouldn't hurt others */ | |
567 | ||
568 | return value; | |
569 | } | |
570 | /* | |
571 | * Now, *this* one could be more user-friendly, but so far, no-one has | |
572 | * complained. The significance of bits is the same as in store_disp() | |
573 | */ | |
574 | static ssize_t show_disp(struct device *dev, | |
575 | struct device_attribute *attr, char *buf) | |
576 | { | |
577 | return sprintf(buf, "%d\n", read_display()); | |
578 | } | |
579 | ||
580 | /* | |
581 | * Experimental support for display switching. As of now: 1 should activate | |
582 | * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. | |
583 | * Any combination (bitwise) of these will suffice. I never actually tested 4 | |
584 | * displays hooked up simultaneously, so be warned. See the acpi4asus README | |
585 | * for more info. | |
586 | */ | |
587 | static ssize_t store_disp(struct device *dev, struct device_attribute *attr, | |
588 | const char *buf, size_t count) | |
589 | { | |
590 | int rv, value; | |
591 | ||
592 | rv = parse_arg(buf, count, &value); | |
593 | if (rv > 0) | |
594 | set_display(value); | |
595 | return rv; | |
596 | } | |
597 | ||
8b857353 CC |
598 | /* |
599 | * Light Sens | |
600 | */ | |
601 | static void set_light_sens_switch(int value) | |
602 | { | |
603 | if (!write_acpi_int(ls_switch_handle, NULL, value, NULL)) | |
604 | printk(ASUS_WARNING "Error setting light sensor switch\n"); | |
605 | hotk->light_switch = value; | |
606 | } | |
607 | ||
608 | static ssize_t show_lssw(struct device *dev, | |
609 | struct device_attribute *attr, char *buf) | |
610 | { | |
611 | return sprintf(buf, "%d\n", hotk->light_switch); | |
612 | } | |
613 | ||
614 | static ssize_t store_lssw(struct device *dev, struct device_attribute *attr, | |
615 | const char *buf, size_t count) | |
616 | { | |
617 | int rv, value; | |
618 | ||
619 | rv = parse_arg(buf, count, &value); | |
620 | if (rv > 0) | |
621 | set_light_sens_switch(value ? 1 : 0); | |
622 | ||
623 | return rv; | |
624 | } | |
625 | ||
626 | static void set_light_sens_level(int value) | |
627 | { | |
628 | if (!write_acpi_int(ls_level_handle, NULL, value, NULL)) | |
629 | printk(ASUS_WARNING "Error setting light sensor level\n"); | |
630 | hotk->light_level = value; | |
631 | } | |
632 | ||
633 | static ssize_t show_lslvl(struct device *dev, | |
634 | struct device_attribute *attr, char *buf) | |
635 | { | |
636 | return sprintf(buf, "%d\n", hotk->light_level); | |
637 | } | |
638 | ||
639 | static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr, | |
640 | const char *buf, size_t count) | |
641 | { | |
642 | int rv, value; | |
643 | ||
644 | rv = parse_arg(buf, count, &value); | |
645 | if (rv > 0) { | |
646 | value = (0 < value) ? ((15 < value) ? 15 : value) : 0; | |
647 | /* 0 <= value <= 15 */ | |
648 | set_light_sens_level(value); | |
649 | } | |
650 | ||
651 | return rv; | |
652 | } | |
653 | ||
85091b71 CC |
654 | static void asus_hotk_notify(acpi_handle handle, u32 event, void *data) |
655 | { | |
656 | /* TODO Find a better way to handle events count. */ | |
657 | if (!hotk) | |
658 | return; | |
659 | ||
6b7091e7 CC |
660 | /* |
661 | * We need to tell the backlight device when the backlight power is | |
662 | * switched | |
663 | */ | |
664 | if (event == ATKD_LCD_ON) { | |
665 | write_status(NULL, 1, LCD_ON, 0); | |
666 | lcd_blank(FB_BLANK_UNBLANK); | |
667 | } else if(event == ATKD_LCD_OFF) { | |
668 | write_status(NULL, 0, LCD_ON, 0); | |
669 | lcd_blank(FB_BLANK_POWERDOWN); | |
670 | } | |
671 | ||
85091b71 CC |
672 | acpi_bus_generate_event(hotk->device, event, |
673 | hotk->event_count[event % 128]++); | |
674 | ||
675 | return; | |
676 | } | |
677 | ||
678 | #define ASUS_CREATE_DEVICE_ATTR(_name) \ | |
679 | struct device_attribute dev_attr_##_name = { \ | |
680 | .attr = { \ | |
681 | .name = __stringify(_name), \ | |
682 | .mode = 0, \ | |
683 | .owner = THIS_MODULE }, \ | |
684 | .show = NULL, \ | |
685 | .store = NULL, \ | |
686 | } | |
687 | ||
688 | #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ | |
689 | do { \ | |
690 | dev_attr_##_name.attr.mode = _mode; \ | |
691 | dev_attr_##_name.show = _show; \ | |
692 | dev_attr_##_name.store = _store; \ | |
693 | } while(0) | |
694 | ||
695 | static ASUS_CREATE_DEVICE_ATTR(infos); | |
4564de17 CC |
696 | static ASUS_CREATE_DEVICE_ATTR(wlan); |
697 | static ASUS_CREATE_DEVICE_ATTR(bluetooth); | |
78127b4a | 698 | static ASUS_CREATE_DEVICE_ATTR(display); |
722ad971 | 699 | static ASUS_CREATE_DEVICE_ATTR(ledd); |
8b857353 CC |
700 | static ASUS_CREATE_DEVICE_ATTR(ls_switch); |
701 | static ASUS_CREATE_DEVICE_ATTR(ls_level); | |
85091b71 CC |
702 | |
703 | static struct attribute *asuspf_attributes[] = { | |
704 | &dev_attr_infos.attr, | |
4564de17 CC |
705 | &dev_attr_wlan.attr, |
706 | &dev_attr_bluetooth.attr, | |
78127b4a | 707 | &dev_attr_display.attr, |
722ad971 | 708 | &dev_attr_ledd.attr, |
8b857353 CC |
709 | &dev_attr_ls_switch.attr, |
710 | &dev_attr_ls_level.attr, | |
85091b71 CC |
711 | NULL |
712 | }; | |
713 | ||
714 | static struct attribute_group asuspf_attribute_group = { | |
715 | .attrs = asuspf_attributes | |
716 | }; | |
717 | ||
718 | static struct platform_driver asuspf_driver = { | |
719 | .driver = { | |
720 | .name = ASUS_HOTK_FILE, | |
721 | .owner = THIS_MODULE, | |
722 | } | |
723 | }; | |
724 | ||
725 | static struct platform_device *asuspf_device; | |
726 | ||
727 | ||
728 | static void asus_hotk_add_fs(void) | |
729 | { | |
730 | ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); | |
4564de17 CC |
731 | |
732 | if (wl_switch_handle) | |
733 | ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); | |
734 | ||
735 | if (bt_switch_handle) | |
736 | ASUS_SET_DEVICE_ATTR(bluetooth, 0644, | |
737 | show_bluetooth, store_bluetooth); | |
78127b4a CC |
738 | |
739 | if (display_set_handle && display_get_handle) | |
740 | ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); | |
741 | else if(display_set_handle) | |
742 | ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); | |
743 | ||
722ad971 CC |
744 | if (ledd_set_handle) |
745 | ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd); | |
746 | ||
8b857353 CC |
747 | if (ls_switch_handle && ls_level_handle) { |
748 | ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl); | |
749 | ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw); | |
750 | } | |
85091b71 CC |
751 | } |
752 | ||
753 | static int asus_handle_init(char *name, acpi_handle *handle, | |
754 | char **paths, int num_paths) | |
755 | { | |
756 | int i; | |
757 | acpi_status status; | |
758 | ||
759 | for (i = 0; i < num_paths; i++) { | |
760 | status = acpi_get_handle(NULL, paths[i], handle); | |
761 | if (ACPI_SUCCESS(status)) | |
762 | return 0; | |
763 | } | |
764 | ||
765 | *handle = NULL; | |
766 | return -ENODEV; | |
767 | } | |
768 | ||
769 | #define ASUS_HANDLE_INIT(object) \ | |
770 | asus_handle_init(#object, &object##_handle, object##_paths, \ | |
771 | ARRAY_SIZE(object##_paths)) | |
772 | ||
773 | ||
774 | /* | |
775 | * This function is used to initialize the hotk with right values. In this | |
776 | * method, we can make all the detection we want, and modify the hotk struct | |
777 | */ | |
778 | static int asus_hotk_get_info(void) | |
779 | { | |
780 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
781 | struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL }; | |
782 | union acpi_object *model = NULL; | |
4564de17 | 783 | int bsts_result, hwrs_result; |
85091b71 CC |
784 | char *string = NULL; |
785 | acpi_status status; | |
786 | ||
787 | /* | |
788 | * Get DSDT headers early enough to allow for differentiating between | |
789 | * models, but late enough to allow acpi_bus_register_driver() to fail | |
790 | * before doing anything ACPI-specific. Should we encounter a machine, | |
791 | * which needs special handling (i.e. its hotkey device has a different | |
792 | * HID), this bit will be moved. A global variable asus_info contains | |
793 | * the DSDT header. | |
794 | */ | |
795 | status = acpi_get_table(ACPI_TABLE_ID_DSDT, 1, &dsdt); | |
796 | if (ACPI_FAILURE(status)) | |
797 | printk(ASUS_WARNING "Couldn't get the DSDT table header\n"); | |
798 | else | |
799 | asus_info = dsdt.pointer; | |
800 | ||
801 | /* We have to write 0 on init this far for all ASUS models */ | |
802 | if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { | |
803 | printk(ASUS_ERR "Hotkey initialization failed\n"); | |
804 | return -ENODEV; | |
805 | } | |
806 | ||
807 | /* This needs to be called for some laptops to init properly */ | |
808 | if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result, NULL)) | |
809 | printk(ASUS_WARNING "Error calling BSTS\n"); | |
810 | else if (bsts_result) | |
811 | printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n", | |
812 | bsts_result); | |
813 | ||
814 | /* | |
815 | * Try to match the object returned by INIT to the specific model. | |
816 | * Handle every possible object (or the lack of thereof) the DSDT | |
817 | * writers might throw at us. When in trouble, we pass NULL to | |
818 | * asus_model_match() and try something completely different. | |
819 | */ | |
820 | if (buffer.pointer) { | |
821 | model = buffer.pointer; | |
822 | switch (model->type) { | |
823 | case ACPI_TYPE_STRING: | |
824 | string = model->string.pointer; | |
825 | break; | |
826 | case ACPI_TYPE_BUFFER: | |
827 | string = model->buffer.pointer; | |
828 | break; | |
829 | default: | |
830 | string = ""; | |
831 | break; | |
832 | } | |
833 | } | |
834 | hotk->name = kstrdup(string, GFP_KERNEL); | |
835 | if (!hotk->name) | |
836 | return -ENOMEM; | |
837 | ||
838 | if(*string) | |
839 | printk(ASUS_NOTICE " %s model detected\n", string); | |
840 | ||
be18cdab CC |
841 | ASUS_HANDLE_INIT(mled_set); |
842 | ASUS_HANDLE_INIT(tled_set); | |
843 | ASUS_HANDLE_INIT(rled_set); | |
844 | ASUS_HANDLE_INIT(pled_set); | |
845 | ||
722ad971 CC |
846 | ASUS_HANDLE_INIT(ledd_set); |
847 | ||
4564de17 CC |
848 | /* |
849 | * The HWRS method return informations about the hardware. | |
850 | * 0x80 bit is for WLAN, 0x100 for Bluetooth. | |
851 | * The significance of others is yet to be found. | |
852 | * If we don't find the method, we assume the device are present. | |
853 | */ | |
854 | if (!read_acpi_int(hotk->handle, "HRWS", &hwrs_result, NULL)) | |
855 | hwrs_result = WL_HWRS | BT_HWRS; | |
856 | ||
857 | if(hwrs_result & WL_HWRS) | |
858 | ASUS_HANDLE_INIT(wl_switch); | |
859 | if(hwrs_result & BT_HWRS) | |
860 | ASUS_HANDLE_INIT(bt_switch); | |
861 | ||
862 | ASUS_HANDLE_INIT(wireless_status); | |
863 | ||
6b7091e7 CC |
864 | ASUS_HANDLE_INIT(brightness_set); |
865 | ASUS_HANDLE_INIT(brightness_get); | |
866 | ||
867 | ASUS_HANDLE_INIT(lcd_switch); | |
868 | ||
78127b4a CC |
869 | ASUS_HANDLE_INIT(display_set); |
870 | ASUS_HANDLE_INIT(display_get); | |
871 | ||
8b857353 CC |
872 | /* There is a lot of models with "ALSL", but a few get |
873 | a real light sens, so we need to check it. */ | |
874 | if(ASUS_HANDLE_INIT(ls_switch)) | |
875 | ASUS_HANDLE_INIT(ls_level); | |
876 | ||
85091b71 CC |
877 | kfree(model); |
878 | ||
879 | return AE_OK; | |
880 | } | |
881 | ||
882 | static int asus_hotk_check(void) | |
883 | { | |
884 | int result = 0; | |
885 | ||
886 | result = acpi_bus_get_status(hotk->device); | |
887 | if (result) | |
888 | return result; | |
889 | ||
890 | if (hotk->device->status.present) { | |
891 | result = asus_hotk_get_info(); | |
892 | } else { | |
893 | printk(ASUS_ERR "Hotkey device not present, aborting\n"); | |
894 | return -EINVAL; | |
895 | } | |
896 | ||
897 | return result; | |
898 | } | |
899 | ||
900 | static int asus_hotk_found; | |
901 | ||
902 | static int asus_hotk_add(struct acpi_device *device) | |
903 | { | |
904 | acpi_status status = AE_OK; | |
905 | int result; | |
906 | ||
907 | if (!device) | |
908 | return -EINVAL; | |
909 | ||
910 | printk(ASUS_NOTICE "Asus Laptop Support version %s\n", | |
911 | ASUS_LAPTOP_VERSION); | |
912 | ||
913 | hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL); | |
914 | if (!hotk) | |
915 | return -ENOMEM; | |
916 | memset(hotk, 0, sizeof(struct asus_hotk)); | |
917 | ||
918 | hotk->handle = device->handle; | |
919 | strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); | |
920 | strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); | |
921 | acpi_driver_data(device) = hotk; | |
922 | hotk->device = device; | |
923 | ||
924 | result = asus_hotk_check(); | |
925 | if (result) | |
926 | goto end; | |
927 | ||
928 | asus_hotk_add_fs(); | |
929 | ||
930 | /* | |
931 | * We install the handler, it will receive the hotk in parameter, so, we | |
932 | * could add other data to the hotk struct | |
933 | */ | |
934 | status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
935 | asus_hotk_notify, hotk); | |
936 | if (ACPI_FAILURE(status)) | |
937 | printk(ASUS_ERR "Error installing notify handler\n"); | |
938 | ||
939 | asus_hotk_found = 1; | |
940 | ||
6b7091e7 | 941 | /* WLED and BLED are on by default */ |
4564de17 CC |
942 | write_status(bt_switch_handle, 1, BT_ON, 0); |
943 | write_status(wl_switch_handle, 1, WL_ON, 0); | |
944 | ||
6b7091e7 CC |
945 | /* LCD Backlight is on by default */ |
946 | write_status(NULL, 1, LCD_ON, 0); | |
947 | ||
722ad971 CC |
948 | /* LED display is off by default */ |
949 | hotk->ledd_status = 0xFFF; | |
950 | ||
8b857353 CC |
951 | /* Set initial values of light sensor and level */ |
952 | hotk->light_switch = 1; /* Default to light sensor disabled */ | |
953 | hotk->light_level = 0; /* level 5 for sensor sensitivity */ | |
954 | ||
955 | if (ls_switch_handle) | |
956 | set_light_sens_switch(hotk->light_switch); | |
957 | ||
958 | if (ls_level_handle) | |
959 | set_light_sens_level(hotk->light_level); | |
960 | ||
85091b71 CC |
961 | end: |
962 | if (result) { | |
963 | kfree(hotk->name); | |
964 | kfree(hotk); | |
965 | } | |
966 | ||
967 | return result; | |
968 | } | |
969 | ||
970 | static int asus_hotk_remove(struct acpi_device *device, int type) | |
971 | { | |
972 | acpi_status status = 0; | |
973 | ||
974 | if (!device || !acpi_driver_data(device)) | |
975 | return -EINVAL; | |
976 | ||
977 | status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
978 | asus_hotk_notify); | |
979 | if (ACPI_FAILURE(status)) | |
980 | printk(ASUS_ERR "Error removing notify handler\n"); | |
981 | ||
982 | kfree(hotk->name); | |
983 | kfree(hotk); | |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
6b7091e7 CC |
988 | static void asus_backlight_exit(void) |
989 | { | |
990 | if(asus_backlight_device) | |
991 | backlight_device_unregister(asus_backlight_device); | |
992 | } | |
993 | ||
be18cdab CC |
994 | #define ASUS_LED_UNREGISTER(object) \ |
995 | if(object##_led.class_dev \ | |
996 | && !IS_ERR(object##_led.class_dev)) \ | |
997 | led_classdev_unregister(&object##_led) | |
998 | ||
999 | static void asus_led_exit(void) | |
1000 | { | |
1001 | ASUS_LED_UNREGISTER(mled); | |
1002 | ASUS_LED_UNREGISTER(tled); | |
1003 | ASUS_LED_UNREGISTER(pled); | |
1004 | ASUS_LED_UNREGISTER(rled); | |
1005 | ||
1006 | destroy_workqueue(led_workqueue); | |
1007 | } | |
1008 | ||
85091b71 CC |
1009 | static void __exit asus_laptop_exit(void) |
1010 | { | |
6b7091e7 | 1011 | asus_backlight_exit(); |
be18cdab CC |
1012 | asus_led_exit(); |
1013 | ||
85091b71 CC |
1014 | acpi_bus_unregister_driver(&asus_hotk_driver); |
1015 | sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); | |
1016 | platform_device_unregister(asuspf_device); | |
1017 | platform_driver_unregister(&asuspf_driver); | |
1018 | ||
1019 | kfree(asus_info); | |
1020 | } | |
1021 | ||
6b7091e7 CC |
1022 | static int asus_backlight_init(struct device * dev) |
1023 | { | |
1024 | struct backlight_device *bd; | |
1025 | ||
1026 | if(brightness_set_handle && lcd_switch_handle) { | |
1027 | bd = backlight_device_register (ASUS_HOTK_FILE, dev, | |
1028 | NULL, &asusbl_data); | |
1029 | if (IS_ERR (bd)) { | |
1030 | printk(ASUS_ERR | |
1031 | "Could not register asus backlight device\n"); | |
1032 | asus_backlight_device = NULL; | |
1033 | return PTR_ERR(bd); | |
1034 | } | |
1035 | ||
1036 | asus_backlight_device = bd; | |
1037 | ||
1038 | down(&bd->sem); | |
1039 | if(likely(bd->props)) { | |
1040 | bd->props->brightness = read_brightness(NULL); | |
1041 | bd->props->power = FB_BLANK_UNBLANK; | |
1042 | if(likely(bd->props->update_status)) | |
1043 | bd->props->update_status(bd); | |
1044 | } | |
1045 | up(&bd->sem); | |
1046 | } | |
1047 | return 0; | |
1048 | } | |
1049 | ||
be18cdab CC |
1050 | static int asus_led_register(acpi_handle handle, |
1051 | struct led_classdev * ldev, | |
1052 | struct device * dev) | |
1053 | { | |
1054 | if(!handle) | |
1055 | return 0; | |
1056 | ||
1057 | return led_classdev_register(dev, ldev); | |
1058 | } | |
1059 | #define ASUS_LED_REGISTER(object, device) \ | |
1060 | asus_led_register(object##_set_handle, &object##_led, device) | |
1061 | ||
1062 | static int asus_led_init(struct device * dev) | |
1063 | { | |
1064 | int rv; | |
1065 | ||
1066 | rv = ASUS_LED_REGISTER(mled, dev); | |
1067 | if(rv) | |
1068 | return rv; | |
1069 | ||
1070 | rv = ASUS_LED_REGISTER(tled, dev); | |
1071 | if(rv) | |
1072 | return rv; | |
1073 | ||
1074 | rv = ASUS_LED_REGISTER(rled, dev); | |
1075 | if(rv) | |
1076 | return rv; | |
1077 | ||
1078 | rv = ASUS_LED_REGISTER(pled, dev); | |
1079 | if(rv) | |
1080 | return rv; | |
1081 | ||
1082 | led_workqueue = create_singlethread_workqueue("led_workqueue"); | |
1083 | if(!led_workqueue) | |
1084 | return -ENOMEM; | |
1085 | ||
1086 | return 0; | |
1087 | } | |
1088 | ||
85091b71 CC |
1089 | static int __init asus_laptop_init(void) |
1090 | { | |
be18cdab | 1091 | struct device *dev; |
85091b71 CC |
1092 | int result; |
1093 | ||
1094 | if (acpi_disabled) | |
1095 | return -ENODEV; | |
1096 | ||
1097 | if (!acpi_specific_hotkey_enabled) { | |
1098 | printk(ASUS_ERR "Using generic hotkey driver\n"); | |
1099 | return -ENODEV; | |
1100 | } | |
1101 | ||
1102 | result = acpi_bus_register_driver(&asus_hotk_driver); | |
1103 | if (result < 0) | |
1104 | return result; | |
1105 | ||
1106 | /* | |
1107 | * This is a bit of a kludge. We only want this module loaded | |
1108 | * for ASUS systems, but there's currently no way to probe the | |
1109 | * ACPI namespace for ASUS HIDs. So we just return failure if | |
1110 | * we didn't find one, which will cause the module to be | |
1111 | * unloaded. | |
1112 | */ | |
1113 | if (!asus_hotk_found) { | |
1114 | acpi_bus_unregister_driver(&asus_hotk_driver); | |
1115 | return -ENODEV; | |
1116 | } | |
1117 | ||
be18cdab CC |
1118 | dev = acpi_get_physical_device(hotk->device->handle); |
1119 | ||
6b7091e7 CC |
1120 | result = asus_backlight_init(dev); |
1121 | if(result) | |
1122 | goto fail_backlight; | |
1123 | ||
be18cdab CC |
1124 | result = asus_led_init(dev); |
1125 | if(result) | |
1126 | goto fail_led; | |
1127 | ||
85091b71 CC |
1128 | /* Register platform stuff */ |
1129 | result = platform_driver_register(&asuspf_driver); | |
1130 | if (result) | |
1131 | goto fail_platform_driver; | |
1132 | ||
1133 | asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); | |
1134 | if (!asuspf_device) { | |
1135 | result = -ENOMEM; | |
1136 | goto fail_platform_device1; | |
1137 | } | |
1138 | ||
1139 | result = platform_device_add(asuspf_device); | |
1140 | if (result) | |
1141 | goto fail_platform_device2; | |
1142 | ||
1143 | result = sysfs_create_group(&asuspf_device->dev.kobj, | |
1144 | &asuspf_attribute_group); | |
1145 | if (result) | |
1146 | goto fail_sysfs; | |
1147 | ||
1148 | return 0; | |
1149 | ||
1150 | fail_sysfs: | |
1151 | platform_device_del(asuspf_device); | |
1152 | ||
1153 | fail_platform_device2: | |
1154 | platform_device_put(asuspf_device); | |
1155 | ||
1156 | fail_platform_device1: | |
1157 | platform_driver_unregister(&asuspf_driver); | |
1158 | ||
1159 | fail_platform_driver: | |
be18cdab CC |
1160 | asus_led_exit(); |
1161 | ||
1162 | fail_led: | |
6b7091e7 CC |
1163 | asus_backlight_exit(); |
1164 | ||
1165 | fail_backlight: | |
85091b71 CC |
1166 | |
1167 | return result; | |
1168 | } | |
1169 | ||
1170 | module_init(asus_laptop_init); | |
1171 | module_exit(asus_laptop_exit); |