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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 | ||
4564de17 CC |
107 | /* Bluetooth and WLAN |
108 | * WLED and BLED are not handled like other XLED, because in some dsdt | |
109 | * they also control the WLAN/Bluetooth device. | |
110 | */ | |
111 | ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED"); | |
112 | ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED"); | |
113 | ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */ | |
114 | ||
6b7091e7 CC |
115 | /* Brightness */ |
116 | ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV"); | |
117 | ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV"); | |
118 | ||
119 | /* Backlight */ | |
120 | ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */ | |
121 | "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */ | |
122 | "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */ | |
123 | "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */ | |
124 | "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */ | |
125 | "\\_SB.PCI0.PX40.Q10", /* S1x */ | |
126 | "\\Q10"); /* A2x, L2D, L3D, M2E */ | |
127 | ||
85091b71 CC |
128 | /* |
129 | * This is the main structure, we can use it to store anything interesting | |
130 | * about the hotk device | |
131 | */ | |
132 | struct asus_hotk { | |
133 | char *name; //laptop name | |
134 | struct acpi_device *device; //the device we are in | |
135 | acpi_handle handle; //the handle of the hotk device | |
136 | char status; //status of the hotk, for LEDs, ... | |
137 | u16 event_count[128]; //count for each event TODO make this better | |
138 | }; | |
139 | ||
140 | /* | |
141 | * This header is made available to allow proper configuration given model, | |
142 | * revision number , ... this info cannot go in struct asus_hotk because it is | |
143 | * available before the hotk | |
144 | */ | |
145 | static struct acpi_table_header *asus_info; | |
146 | ||
147 | /* The actual device the driver binds to */ | |
148 | static struct asus_hotk *hotk; | |
149 | ||
150 | /* | |
151 | * The hotkey driver declaration | |
152 | */ | |
153 | static int asus_hotk_add(struct acpi_device *device); | |
154 | static int asus_hotk_remove(struct acpi_device *device, int type); | |
155 | static struct acpi_driver asus_hotk_driver = { | |
156 | .name = ASUS_HOTK_NAME, | |
157 | .class = ASUS_HOTK_CLASS, | |
158 | .ids = ASUS_HOTK_HID, | |
159 | .ops = { | |
160 | .add = asus_hotk_add, | |
161 | .remove = asus_hotk_remove, | |
162 | }, | |
163 | }; | |
164 | ||
6b7091e7 CC |
165 | /* The backlight device /sys/class/backlight */ |
166 | static struct backlight_device *asus_backlight_device; | |
167 | ||
168 | /* | |
169 | * The backlight class declaration | |
170 | */ | |
171 | static int read_brightness(struct backlight_device *bd); | |
172 | static int update_bl_status(struct backlight_device *bd); | |
173 | static struct backlight_properties asusbl_data = { | |
174 | .owner = THIS_MODULE, | |
175 | .get_brightness = read_brightness, | |
176 | .update_status = update_bl_status, | |
177 | .max_brightness = 15, | |
178 | }; | |
179 | ||
be18cdab CC |
180 | /* These functions actually update the LED's, and are called from a |
181 | * workqueue. By doing this as separate work rather than when the LED | |
182 | * subsystem asks, we avoid messing with the Asus ACPI stuff during a | |
183 | * potentially bad time, such as a timer interrupt. */ | |
184 | static struct workqueue_struct *led_workqueue; | |
185 | ||
186 | #define ASUS_LED(object, ledname) \ | |
187 | static void object##_led_set(struct led_classdev *led_cdev, \ | |
188 | enum led_brightness value); \ | |
189 | static void object##_led_update(struct work_struct *ignored); \ | |
190 | static int object##_led_wk; \ | |
191 | DECLARE_WORK(object##_led_work, object##_led_update); \ | |
192 | static struct led_classdev object##_led = { \ | |
193 | .name = "asus:" ledname, \ | |
194 | .brightness_set = object##_led_set, \ | |
195 | } | |
196 | ||
197 | ASUS_LED(mled, "mail"); | |
198 | ASUS_LED(tled, "touchpad"); | |
199 | ASUS_LED(rled, "record"); | |
200 | ASUS_LED(pled, "phone"); | |
201 | ||
85091b71 CC |
202 | /* |
203 | * This function evaluates an ACPI method, given an int as parameter, the | |
204 | * method is searched within the scope of the handle, can be NULL. The output | |
205 | * of the method is written is output, which can also be NULL | |
206 | * | |
207 | * returns 1 if write is successful, 0 else. | |
208 | */ | |
209 | static int write_acpi_int(acpi_handle handle, const char *method, int val, | |
210 | struct acpi_buffer *output) | |
211 | { | |
212 | struct acpi_object_list params; //list of input parameters (an int here) | |
213 | union acpi_object in_obj; //the only param we use | |
214 | acpi_status status; | |
215 | ||
216 | params.count = 1; | |
217 | params.pointer = &in_obj; | |
218 | in_obj.type = ACPI_TYPE_INTEGER; | |
219 | in_obj.integer.value = val; | |
220 | ||
221 | status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); | |
222 | return (status == AE_OK); | |
223 | } | |
224 | ||
225 | static int read_acpi_int(acpi_handle handle, const char *method, int *val, | |
226 | struct acpi_object_list *params) | |
227 | { | |
228 | struct acpi_buffer output; | |
229 | union acpi_object out_obj; | |
230 | acpi_status status; | |
231 | ||
232 | output.length = sizeof(out_obj); | |
233 | output.pointer = &out_obj; | |
234 | ||
235 | status = acpi_evaluate_object(handle, (char *)method, params, &output); | |
236 | *val = out_obj.integer.value; | |
237 | return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER); | |
238 | } | |
239 | ||
4564de17 CC |
240 | static int read_wireless_status(int mask) { |
241 | int status; | |
242 | ||
243 | if (!wireless_status_handle) | |
244 | return (hotk->status & mask) ? 1 : 0; | |
245 | ||
246 | if (read_acpi_int(wireless_status_handle, NULL, &status, NULL)) { | |
247 | return (status & mask) ? 1 : 0; | |
248 | } else | |
249 | printk(ASUS_WARNING "Error reading Wireless status\n"); | |
250 | ||
251 | return (hotk->status & mask) ? 1 : 0; | |
252 | } | |
253 | ||
be18cdab CC |
254 | /* Generic LED functions */ |
255 | static int read_status(int mask) | |
256 | { | |
4564de17 CC |
257 | /* There is a special method for both wireless devices */ |
258 | if (mask == BT_ON || mask == WL_ON) | |
259 | return read_wireless_status(mask); | |
260 | ||
be18cdab CC |
261 | return (hotk->status & mask) ? 1 : 0; |
262 | } | |
263 | ||
264 | static void write_status(acpi_handle handle, int out, int mask, | |
4564de17 | 265 | int invert) |
be18cdab CC |
266 | { |
267 | hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); | |
268 | ||
269 | if (invert) /* invert target value */ | |
270 | out = !out & 0x1; | |
271 | ||
272 | if (handle && !write_acpi_int(handle, NULL, out, NULL)) | |
273 | printk(ASUS_WARNING " write failed\n"); | |
274 | } | |
275 | ||
276 | /* /sys/class/led handlers */ | |
277 | #define ASUS_LED_HANDLER(object, mask, invert) \ | |
278 | static void object##_led_set(struct led_classdev *led_cdev, \ | |
279 | enum led_brightness value) \ | |
280 | { \ | |
281 | object##_led_wk = value; \ | |
282 | queue_work(led_workqueue, &object##_led_work); \ | |
283 | } \ | |
284 | static void object##_led_update(struct work_struct *ignored) \ | |
285 | { \ | |
286 | int value = object##_led_wk; \ | |
287 | write_status(object##_set_handle, value, (mask), (invert)); \ | |
288 | } | |
289 | ||
290 | ASUS_LED_HANDLER(mled, MLED_ON, 1); | |
291 | ASUS_LED_HANDLER(pled, PLED_ON, 0); | |
292 | ASUS_LED_HANDLER(rled, RLED_ON, 0); | |
293 | ASUS_LED_HANDLER(tled, TLED_ON, 0); | |
294 | ||
6b7091e7 CC |
295 | static int get_lcd_state(void) |
296 | { | |
297 | return read_status(LCD_ON); | |
298 | } | |
299 | ||
300 | static int set_lcd_state(int value) | |
301 | { | |
302 | int lcd = 0; | |
303 | acpi_status status = 0; | |
304 | ||
305 | lcd = value ? 1 : 0; | |
306 | ||
307 | if (lcd == get_lcd_state()) | |
308 | return 0; | |
309 | ||
310 | if(lcd_switch_handle) { | |
311 | status = acpi_evaluate_object(lcd_switch_handle, | |
312 | NULL, NULL, NULL); | |
313 | ||
314 | if (ACPI_FAILURE(status)) | |
315 | printk(ASUS_WARNING "Error switching LCD\n"); | |
316 | } | |
317 | ||
318 | write_status(NULL, lcd, LCD_ON, 0); | |
319 | return 0; | |
320 | } | |
321 | ||
322 | static void lcd_blank(int blank) | |
323 | { | |
324 | struct backlight_device *bd = asus_backlight_device; | |
325 | ||
326 | if(bd) { | |
327 | down(&bd->sem); | |
328 | if(likely(bd->props)) { | |
329 | bd->props->power = blank; | |
330 | if(likely(bd->props->update_status)) | |
331 | bd->props->update_status(bd); | |
332 | } | |
333 | up(&bd->sem); | |
334 | } | |
335 | } | |
336 | ||
337 | static int read_brightness(struct backlight_device *bd) | |
338 | { | |
339 | int value; | |
340 | ||
341 | if (!read_acpi_int(brightness_get_handle, NULL, &value, NULL)) | |
342 | printk(ASUS_WARNING "Error reading brightness\n"); | |
343 | ||
344 | return value; | |
345 | } | |
346 | ||
347 | static int set_brightness(struct backlight_device *bd, int value) | |
348 | { | |
349 | int ret = 0; | |
350 | ||
351 | value = (0 < value) ? ((15 < value) ? 15 : value) : 0; | |
352 | /* 0 <= value <= 15 */ | |
353 | ||
354 | if (!write_acpi_int(brightness_set_handle, NULL, value, NULL)) { | |
355 | printk(ASUS_WARNING "Error changing brightness\n"); | |
356 | ret = -EIO; | |
357 | } | |
358 | ||
359 | return ret; | |
360 | } | |
361 | ||
362 | static int update_bl_status(struct backlight_device *bd) | |
363 | { | |
364 | int rv; | |
365 | int value = bd->props->brightness; | |
366 | ||
367 | rv = set_brightness(bd, value); | |
368 | if(rv) | |
369 | return rv; | |
370 | ||
371 | value = (bd->props->power == FB_BLANK_UNBLANK) ? 1 : 0; | |
372 | return set_lcd_state(value); | |
373 | } | |
374 | ||
85091b71 CC |
375 | /* |
376 | * Platform device handlers | |
377 | */ | |
378 | ||
379 | /* | |
380 | * We write our info in page, we begin at offset off and cannot write more | |
381 | * than count bytes. We set eof to 1 if we handle those 2 values. We return the | |
382 | * number of bytes written in page | |
383 | */ | |
384 | static ssize_t show_infos(struct device *dev, | |
385 | struct device_attribute *attr, char *page) | |
386 | { | |
387 | int len = 0; | |
388 | int temp; | |
389 | char buf[16]; //enough for all info | |
390 | /* | |
391 | * We use the easy way, we don't care of off and count, so we don't set eof | |
392 | * to 1 | |
393 | */ | |
394 | ||
395 | len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); | |
396 | len += sprintf(page + len, "Model reference : %s\n", hotk->name); | |
397 | /* | |
398 | * The SFUN method probably allows the original driver to get the list | |
399 | * of features supported by a given model. For now, 0x0100 or 0x0800 | |
400 | * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. | |
401 | * The significance of others is yet to be found. | |
402 | */ | |
403 | if (read_acpi_int(hotk->handle, "SFUN", &temp, NULL)) | |
404 | len += | |
405 | sprintf(page + len, "SFUN value : 0x%04x\n", temp); | |
406 | /* | |
407 | * Another value for userspace: the ASYM method returns 0x02 for | |
408 | * battery low and 0x04 for battery critical, its readings tend to be | |
409 | * more accurate than those provided by _BST. | |
410 | * Note: since not all the laptops provide this method, errors are | |
411 | * silently ignored. | |
412 | */ | |
413 | if (read_acpi_int(hotk->handle, "ASYM", &temp, NULL)) | |
414 | len += | |
415 | sprintf(page + len, "ASYM value : 0x%04x\n", temp); | |
416 | if (asus_info) { | |
417 | snprintf(buf, 16, "%d", asus_info->length); | |
418 | len += sprintf(page + len, "DSDT length : %s\n", buf); | |
419 | snprintf(buf, 16, "%d", asus_info->checksum); | |
420 | len += sprintf(page + len, "DSDT checksum : %s\n", buf); | |
421 | snprintf(buf, 16, "%d", asus_info->revision); | |
422 | len += sprintf(page + len, "DSDT revision : %s\n", buf); | |
423 | snprintf(buf, 7, "%s", asus_info->oem_id); | |
424 | len += sprintf(page + len, "OEM id : %s\n", buf); | |
425 | snprintf(buf, 9, "%s", asus_info->oem_table_id); | |
426 | len += sprintf(page + len, "OEM table id : %s\n", buf); | |
427 | snprintf(buf, 16, "%x", asus_info->oem_revision); | |
428 | len += sprintf(page + len, "OEM revision : 0x%s\n", buf); | |
429 | snprintf(buf, 5, "%s", asus_info->asl_compiler_id); | |
430 | len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); | |
431 | snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); | |
432 | len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); | |
433 | } | |
434 | ||
435 | return len; | |
436 | } | |
437 | ||
438 | static int parse_arg(const char *buf, unsigned long count, int *val) | |
439 | { | |
440 | if (!count) | |
441 | return 0; | |
442 | if (count > 31) | |
443 | return -EINVAL; | |
444 | if (sscanf(buf, "%i", val) != 1) | |
445 | return -EINVAL; | |
446 | return count; | |
447 | } | |
448 | ||
4564de17 CC |
449 | static ssize_t store_status(const char *buf, size_t count, |
450 | acpi_handle handle, int mask, int invert) | |
451 | { | |
452 | int rv, value; | |
453 | int out = 0; | |
454 | ||
455 | rv = parse_arg(buf, count, &value); | |
456 | if (rv > 0) | |
457 | out = value ? 1 : 0; | |
458 | ||
459 | write_status(handle, out, mask, invert); | |
460 | ||
461 | return rv; | |
462 | } | |
463 | ||
464 | /* | |
465 | * WLAN | |
466 | */ | |
467 | static ssize_t show_wlan(struct device *dev, | |
468 | struct device_attribute *attr, char *buf) | |
469 | { | |
470 | return sprintf(buf, "%d\n", read_status(WL_ON)); | |
471 | } | |
472 | ||
473 | static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, | |
474 | const char *buf, size_t count) | |
475 | { | |
476 | return store_status(buf, count, wl_switch_handle, WL_ON, 0); | |
477 | } | |
478 | ||
479 | /* | |
480 | * Bluetooth | |
481 | */ | |
482 | static ssize_t show_bluetooth(struct device *dev, | |
483 | struct device_attribute *attr, char *buf) | |
484 | { | |
485 | return sprintf(buf, "%d\n", read_status(BT_ON)); | |
486 | } | |
487 | ||
488 | static ssize_t store_bluetooth(struct device *dev, struct device_attribute *attr, | |
489 | const char *buf, size_t count) | |
490 | { | |
491 | return store_status(buf, count, bt_switch_handle, BT_ON, 0); | |
492 | } | |
493 | ||
85091b71 CC |
494 | static void asus_hotk_notify(acpi_handle handle, u32 event, void *data) |
495 | { | |
496 | /* TODO Find a better way to handle events count. */ | |
497 | if (!hotk) | |
498 | return; | |
499 | ||
6b7091e7 CC |
500 | /* |
501 | * We need to tell the backlight device when the backlight power is | |
502 | * switched | |
503 | */ | |
504 | if (event == ATKD_LCD_ON) { | |
505 | write_status(NULL, 1, LCD_ON, 0); | |
506 | lcd_blank(FB_BLANK_UNBLANK); | |
507 | } else if(event == ATKD_LCD_OFF) { | |
508 | write_status(NULL, 0, LCD_ON, 0); | |
509 | lcd_blank(FB_BLANK_POWERDOWN); | |
510 | } | |
511 | ||
85091b71 CC |
512 | acpi_bus_generate_event(hotk->device, event, |
513 | hotk->event_count[event % 128]++); | |
514 | ||
515 | return; | |
516 | } | |
517 | ||
518 | #define ASUS_CREATE_DEVICE_ATTR(_name) \ | |
519 | struct device_attribute dev_attr_##_name = { \ | |
520 | .attr = { \ | |
521 | .name = __stringify(_name), \ | |
522 | .mode = 0, \ | |
523 | .owner = THIS_MODULE }, \ | |
524 | .show = NULL, \ | |
525 | .store = NULL, \ | |
526 | } | |
527 | ||
528 | #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ | |
529 | do { \ | |
530 | dev_attr_##_name.attr.mode = _mode; \ | |
531 | dev_attr_##_name.show = _show; \ | |
532 | dev_attr_##_name.store = _store; \ | |
533 | } while(0) | |
534 | ||
535 | static ASUS_CREATE_DEVICE_ATTR(infos); | |
4564de17 CC |
536 | static ASUS_CREATE_DEVICE_ATTR(wlan); |
537 | static ASUS_CREATE_DEVICE_ATTR(bluetooth); | |
85091b71 CC |
538 | |
539 | static struct attribute *asuspf_attributes[] = { | |
540 | &dev_attr_infos.attr, | |
4564de17 CC |
541 | &dev_attr_wlan.attr, |
542 | &dev_attr_bluetooth.attr, | |
85091b71 CC |
543 | NULL |
544 | }; | |
545 | ||
546 | static struct attribute_group asuspf_attribute_group = { | |
547 | .attrs = asuspf_attributes | |
548 | }; | |
549 | ||
550 | static struct platform_driver asuspf_driver = { | |
551 | .driver = { | |
552 | .name = ASUS_HOTK_FILE, | |
553 | .owner = THIS_MODULE, | |
554 | } | |
555 | }; | |
556 | ||
557 | static struct platform_device *asuspf_device; | |
558 | ||
559 | ||
560 | static void asus_hotk_add_fs(void) | |
561 | { | |
562 | ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); | |
4564de17 CC |
563 | |
564 | if (wl_switch_handle) | |
565 | ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); | |
566 | ||
567 | if (bt_switch_handle) | |
568 | ASUS_SET_DEVICE_ATTR(bluetooth, 0644, | |
569 | show_bluetooth, store_bluetooth); | |
85091b71 CC |
570 | } |
571 | ||
572 | static int asus_handle_init(char *name, acpi_handle *handle, | |
573 | char **paths, int num_paths) | |
574 | { | |
575 | int i; | |
576 | acpi_status status; | |
577 | ||
578 | for (i = 0; i < num_paths; i++) { | |
579 | status = acpi_get_handle(NULL, paths[i], handle); | |
580 | if (ACPI_SUCCESS(status)) | |
581 | return 0; | |
582 | } | |
583 | ||
584 | *handle = NULL; | |
585 | return -ENODEV; | |
586 | } | |
587 | ||
588 | #define ASUS_HANDLE_INIT(object) \ | |
589 | asus_handle_init(#object, &object##_handle, object##_paths, \ | |
590 | ARRAY_SIZE(object##_paths)) | |
591 | ||
592 | ||
593 | /* | |
594 | * This function is used to initialize the hotk with right values. In this | |
595 | * method, we can make all the detection we want, and modify the hotk struct | |
596 | */ | |
597 | static int asus_hotk_get_info(void) | |
598 | { | |
599 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
600 | struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL }; | |
601 | union acpi_object *model = NULL; | |
4564de17 | 602 | int bsts_result, hwrs_result; |
85091b71 CC |
603 | char *string = NULL; |
604 | acpi_status status; | |
605 | ||
606 | /* | |
607 | * Get DSDT headers early enough to allow for differentiating between | |
608 | * models, but late enough to allow acpi_bus_register_driver() to fail | |
609 | * before doing anything ACPI-specific. Should we encounter a machine, | |
610 | * which needs special handling (i.e. its hotkey device has a different | |
611 | * HID), this bit will be moved. A global variable asus_info contains | |
612 | * the DSDT header. | |
613 | */ | |
614 | status = acpi_get_table(ACPI_TABLE_ID_DSDT, 1, &dsdt); | |
615 | if (ACPI_FAILURE(status)) | |
616 | printk(ASUS_WARNING "Couldn't get the DSDT table header\n"); | |
617 | else | |
618 | asus_info = dsdt.pointer; | |
619 | ||
620 | /* We have to write 0 on init this far for all ASUS models */ | |
621 | if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { | |
622 | printk(ASUS_ERR "Hotkey initialization failed\n"); | |
623 | return -ENODEV; | |
624 | } | |
625 | ||
626 | /* This needs to be called for some laptops to init properly */ | |
627 | if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result, NULL)) | |
628 | printk(ASUS_WARNING "Error calling BSTS\n"); | |
629 | else if (bsts_result) | |
630 | printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n", | |
631 | bsts_result); | |
632 | ||
633 | /* | |
634 | * Try to match the object returned by INIT to the specific model. | |
635 | * Handle every possible object (or the lack of thereof) the DSDT | |
636 | * writers might throw at us. When in trouble, we pass NULL to | |
637 | * asus_model_match() and try something completely different. | |
638 | */ | |
639 | if (buffer.pointer) { | |
640 | model = buffer.pointer; | |
641 | switch (model->type) { | |
642 | case ACPI_TYPE_STRING: | |
643 | string = model->string.pointer; | |
644 | break; | |
645 | case ACPI_TYPE_BUFFER: | |
646 | string = model->buffer.pointer; | |
647 | break; | |
648 | default: | |
649 | string = ""; | |
650 | break; | |
651 | } | |
652 | } | |
653 | hotk->name = kstrdup(string, GFP_KERNEL); | |
654 | if (!hotk->name) | |
655 | return -ENOMEM; | |
656 | ||
657 | if(*string) | |
658 | printk(ASUS_NOTICE " %s model detected\n", string); | |
659 | ||
be18cdab CC |
660 | ASUS_HANDLE_INIT(mled_set); |
661 | ASUS_HANDLE_INIT(tled_set); | |
662 | ASUS_HANDLE_INIT(rled_set); | |
663 | ASUS_HANDLE_INIT(pled_set); | |
664 | ||
4564de17 CC |
665 | /* |
666 | * The HWRS method return informations about the hardware. | |
667 | * 0x80 bit is for WLAN, 0x100 for Bluetooth. | |
668 | * The significance of others is yet to be found. | |
669 | * If we don't find the method, we assume the device are present. | |
670 | */ | |
671 | if (!read_acpi_int(hotk->handle, "HRWS", &hwrs_result, NULL)) | |
672 | hwrs_result = WL_HWRS | BT_HWRS; | |
673 | ||
674 | if(hwrs_result & WL_HWRS) | |
675 | ASUS_HANDLE_INIT(wl_switch); | |
676 | if(hwrs_result & BT_HWRS) | |
677 | ASUS_HANDLE_INIT(bt_switch); | |
678 | ||
679 | ASUS_HANDLE_INIT(wireless_status); | |
680 | ||
6b7091e7 CC |
681 | ASUS_HANDLE_INIT(brightness_set); |
682 | ASUS_HANDLE_INIT(brightness_get); | |
683 | ||
684 | ASUS_HANDLE_INIT(lcd_switch); | |
685 | ||
85091b71 CC |
686 | kfree(model); |
687 | ||
688 | return AE_OK; | |
689 | } | |
690 | ||
691 | static int asus_hotk_check(void) | |
692 | { | |
693 | int result = 0; | |
694 | ||
695 | result = acpi_bus_get_status(hotk->device); | |
696 | if (result) | |
697 | return result; | |
698 | ||
699 | if (hotk->device->status.present) { | |
700 | result = asus_hotk_get_info(); | |
701 | } else { | |
702 | printk(ASUS_ERR "Hotkey device not present, aborting\n"); | |
703 | return -EINVAL; | |
704 | } | |
705 | ||
706 | return result; | |
707 | } | |
708 | ||
709 | static int asus_hotk_found; | |
710 | ||
711 | static int asus_hotk_add(struct acpi_device *device) | |
712 | { | |
713 | acpi_status status = AE_OK; | |
714 | int result; | |
715 | ||
716 | if (!device) | |
717 | return -EINVAL; | |
718 | ||
719 | printk(ASUS_NOTICE "Asus Laptop Support version %s\n", | |
720 | ASUS_LAPTOP_VERSION); | |
721 | ||
722 | hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL); | |
723 | if (!hotk) | |
724 | return -ENOMEM; | |
725 | memset(hotk, 0, sizeof(struct asus_hotk)); | |
726 | ||
727 | hotk->handle = device->handle; | |
728 | strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); | |
729 | strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); | |
730 | acpi_driver_data(device) = hotk; | |
731 | hotk->device = device; | |
732 | ||
733 | result = asus_hotk_check(); | |
734 | if (result) | |
735 | goto end; | |
736 | ||
737 | asus_hotk_add_fs(); | |
738 | ||
739 | /* | |
740 | * We install the handler, it will receive the hotk in parameter, so, we | |
741 | * could add other data to the hotk struct | |
742 | */ | |
743 | status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
744 | asus_hotk_notify, hotk); | |
745 | if (ACPI_FAILURE(status)) | |
746 | printk(ASUS_ERR "Error installing notify handler\n"); | |
747 | ||
748 | asus_hotk_found = 1; | |
749 | ||
6b7091e7 | 750 | /* WLED and BLED are on by default */ |
4564de17 CC |
751 | write_status(bt_switch_handle, 1, BT_ON, 0); |
752 | write_status(wl_switch_handle, 1, WL_ON, 0); | |
753 | ||
6b7091e7 CC |
754 | /* LCD Backlight is on by default */ |
755 | write_status(NULL, 1, LCD_ON, 0); | |
756 | ||
85091b71 CC |
757 | end: |
758 | if (result) { | |
759 | kfree(hotk->name); | |
760 | kfree(hotk); | |
761 | } | |
762 | ||
763 | return result; | |
764 | } | |
765 | ||
766 | static int asus_hotk_remove(struct acpi_device *device, int type) | |
767 | { | |
768 | acpi_status status = 0; | |
769 | ||
770 | if (!device || !acpi_driver_data(device)) | |
771 | return -EINVAL; | |
772 | ||
773 | status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
774 | asus_hotk_notify); | |
775 | if (ACPI_FAILURE(status)) | |
776 | printk(ASUS_ERR "Error removing notify handler\n"); | |
777 | ||
778 | kfree(hotk->name); | |
779 | kfree(hotk); | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
6b7091e7 CC |
784 | static void asus_backlight_exit(void) |
785 | { | |
786 | if(asus_backlight_device) | |
787 | backlight_device_unregister(asus_backlight_device); | |
788 | } | |
789 | ||
be18cdab CC |
790 | #define ASUS_LED_UNREGISTER(object) \ |
791 | if(object##_led.class_dev \ | |
792 | && !IS_ERR(object##_led.class_dev)) \ | |
793 | led_classdev_unregister(&object##_led) | |
794 | ||
795 | static void asus_led_exit(void) | |
796 | { | |
797 | ASUS_LED_UNREGISTER(mled); | |
798 | ASUS_LED_UNREGISTER(tled); | |
799 | ASUS_LED_UNREGISTER(pled); | |
800 | ASUS_LED_UNREGISTER(rled); | |
801 | ||
802 | destroy_workqueue(led_workqueue); | |
803 | } | |
804 | ||
85091b71 CC |
805 | static void __exit asus_laptop_exit(void) |
806 | { | |
6b7091e7 | 807 | asus_backlight_exit(); |
be18cdab CC |
808 | asus_led_exit(); |
809 | ||
85091b71 CC |
810 | acpi_bus_unregister_driver(&asus_hotk_driver); |
811 | sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); | |
812 | platform_device_unregister(asuspf_device); | |
813 | platform_driver_unregister(&asuspf_driver); | |
814 | ||
815 | kfree(asus_info); | |
816 | } | |
817 | ||
6b7091e7 CC |
818 | static int asus_backlight_init(struct device * dev) |
819 | { | |
820 | struct backlight_device *bd; | |
821 | ||
822 | if(brightness_set_handle && lcd_switch_handle) { | |
823 | bd = backlight_device_register (ASUS_HOTK_FILE, dev, | |
824 | NULL, &asusbl_data); | |
825 | if (IS_ERR (bd)) { | |
826 | printk(ASUS_ERR | |
827 | "Could not register asus backlight device\n"); | |
828 | asus_backlight_device = NULL; | |
829 | return PTR_ERR(bd); | |
830 | } | |
831 | ||
832 | asus_backlight_device = bd; | |
833 | ||
834 | down(&bd->sem); | |
835 | if(likely(bd->props)) { | |
836 | bd->props->brightness = read_brightness(NULL); | |
837 | bd->props->power = FB_BLANK_UNBLANK; | |
838 | if(likely(bd->props->update_status)) | |
839 | bd->props->update_status(bd); | |
840 | } | |
841 | up(&bd->sem); | |
842 | } | |
843 | return 0; | |
844 | } | |
845 | ||
be18cdab CC |
846 | static int asus_led_register(acpi_handle handle, |
847 | struct led_classdev * ldev, | |
848 | struct device * dev) | |
849 | { | |
850 | if(!handle) | |
851 | return 0; | |
852 | ||
853 | return led_classdev_register(dev, ldev); | |
854 | } | |
855 | #define ASUS_LED_REGISTER(object, device) \ | |
856 | asus_led_register(object##_set_handle, &object##_led, device) | |
857 | ||
858 | static int asus_led_init(struct device * dev) | |
859 | { | |
860 | int rv; | |
861 | ||
862 | rv = ASUS_LED_REGISTER(mled, dev); | |
863 | if(rv) | |
864 | return rv; | |
865 | ||
866 | rv = ASUS_LED_REGISTER(tled, dev); | |
867 | if(rv) | |
868 | return rv; | |
869 | ||
870 | rv = ASUS_LED_REGISTER(rled, dev); | |
871 | if(rv) | |
872 | return rv; | |
873 | ||
874 | rv = ASUS_LED_REGISTER(pled, dev); | |
875 | if(rv) | |
876 | return rv; | |
877 | ||
878 | led_workqueue = create_singlethread_workqueue("led_workqueue"); | |
879 | if(!led_workqueue) | |
880 | return -ENOMEM; | |
881 | ||
882 | return 0; | |
883 | } | |
884 | ||
85091b71 CC |
885 | static int __init asus_laptop_init(void) |
886 | { | |
be18cdab | 887 | struct device *dev; |
85091b71 CC |
888 | int result; |
889 | ||
890 | if (acpi_disabled) | |
891 | return -ENODEV; | |
892 | ||
893 | if (!acpi_specific_hotkey_enabled) { | |
894 | printk(ASUS_ERR "Using generic hotkey driver\n"); | |
895 | return -ENODEV; | |
896 | } | |
897 | ||
898 | result = acpi_bus_register_driver(&asus_hotk_driver); | |
899 | if (result < 0) | |
900 | return result; | |
901 | ||
902 | /* | |
903 | * This is a bit of a kludge. We only want this module loaded | |
904 | * for ASUS systems, but there's currently no way to probe the | |
905 | * ACPI namespace for ASUS HIDs. So we just return failure if | |
906 | * we didn't find one, which will cause the module to be | |
907 | * unloaded. | |
908 | */ | |
909 | if (!asus_hotk_found) { | |
910 | acpi_bus_unregister_driver(&asus_hotk_driver); | |
911 | return -ENODEV; | |
912 | } | |
913 | ||
be18cdab CC |
914 | dev = acpi_get_physical_device(hotk->device->handle); |
915 | ||
6b7091e7 CC |
916 | result = asus_backlight_init(dev); |
917 | if(result) | |
918 | goto fail_backlight; | |
919 | ||
be18cdab CC |
920 | result = asus_led_init(dev); |
921 | if(result) | |
922 | goto fail_led; | |
923 | ||
85091b71 CC |
924 | /* Register platform stuff */ |
925 | result = platform_driver_register(&asuspf_driver); | |
926 | if (result) | |
927 | goto fail_platform_driver; | |
928 | ||
929 | asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); | |
930 | if (!asuspf_device) { | |
931 | result = -ENOMEM; | |
932 | goto fail_platform_device1; | |
933 | } | |
934 | ||
935 | result = platform_device_add(asuspf_device); | |
936 | if (result) | |
937 | goto fail_platform_device2; | |
938 | ||
939 | result = sysfs_create_group(&asuspf_device->dev.kobj, | |
940 | &asuspf_attribute_group); | |
941 | if (result) | |
942 | goto fail_sysfs; | |
943 | ||
944 | return 0; | |
945 | ||
946 | fail_sysfs: | |
947 | platform_device_del(asuspf_device); | |
948 | ||
949 | fail_platform_device2: | |
950 | platform_device_put(asuspf_device); | |
951 | ||
952 | fail_platform_device1: | |
953 | platform_driver_unregister(&asuspf_driver); | |
954 | ||
955 | fail_platform_driver: | |
be18cdab CC |
956 | asus_led_exit(); |
957 | ||
958 | fail_led: | |
6b7091e7 CC |
959 | asus_backlight_exit(); |
960 | ||
961 | fail_backlight: | |
85091b71 CC |
962 | |
963 | return result; | |
964 | } | |
965 | ||
966 | module_init(asus_laptop_init); | |
967 | module_exit(asus_laptop_exit); |