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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 | ||
78127b4a CC |
128 | /* Display */ |
129 | ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP"); | |
130 | ASUS_HANDLE(display_get, | |
131 | "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G | |
132 | M6A M6V VX-1 V6J V6V W3Z */ | |
133 | "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V | |
134 | S5A M5A z33A W1Jc W2V */ | |
135 | "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */ | |
136 | "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */ | |
137 | "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */ | |
138 | "\\_SB.PCI0.VGA.GETD", /* Z96F */ | |
139 | "\\ACTD", /* A2D */ | |
140 | "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */ | |
141 | "\\DNXT", /* P30 */ | |
142 | "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */ | |
143 | "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */ | |
144 | ||
85091b71 CC |
145 | /* |
146 | * This is the main structure, we can use it to store anything interesting | |
147 | * about the hotk device | |
148 | */ | |
149 | struct asus_hotk { | |
150 | char *name; //laptop name | |
151 | struct acpi_device *device; //the device we are in | |
152 | acpi_handle handle; //the handle of the hotk device | |
153 | char status; //status of the hotk, for LEDs, ... | |
154 | u16 event_count[128]; //count for each event TODO make this better | |
155 | }; | |
156 | ||
157 | /* | |
158 | * This header is made available to allow proper configuration given model, | |
159 | * revision number , ... this info cannot go in struct asus_hotk because it is | |
160 | * available before the hotk | |
161 | */ | |
162 | static struct acpi_table_header *asus_info; | |
163 | ||
164 | /* The actual device the driver binds to */ | |
165 | static struct asus_hotk *hotk; | |
166 | ||
167 | /* | |
168 | * The hotkey driver declaration | |
169 | */ | |
170 | static int asus_hotk_add(struct acpi_device *device); | |
171 | static int asus_hotk_remove(struct acpi_device *device, int type); | |
172 | static struct acpi_driver asus_hotk_driver = { | |
173 | .name = ASUS_HOTK_NAME, | |
174 | .class = ASUS_HOTK_CLASS, | |
175 | .ids = ASUS_HOTK_HID, | |
176 | .ops = { | |
177 | .add = asus_hotk_add, | |
178 | .remove = asus_hotk_remove, | |
179 | }, | |
180 | }; | |
181 | ||
6b7091e7 CC |
182 | /* The backlight device /sys/class/backlight */ |
183 | static struct backlight_device *asus_backlight_device; | |
184 | ||
185 | /* | |
186 | * The backlight class declaration | |
187 | */ | |
188 | static int read_brightness(struct backlight_device *bd); | |
189 | static int update_bl_status(struct backlight_device *bd); | |
190 | static struct backlight_properties asusbl_data = { | |
191 | .owner = THIS_MODULE, | |
192 | .get_brightness = read_brightness, | |
193 | .update_status = update_bl_status, | |
194 | .max_brightness = 15, | |
195 | }; | |
196 | ||
be18cdab CC |
197 | /* These functions actually update the LED's, and are called from a |
198 | * workqueue. By doing this as separate work rather than when the LED | |
199 | * subsystem asks, we avoid messing with the Asus ACPI stuff during a | |
200 | * potentially bad time, such as a timer interrupt. */ | |
201 | static struct workqueue_struct *led_workqueue; | |
202 | ||
203 | #define ASUS_LED(object, ledname) \ | |
204 | static void object##_led_set(struct led_classdev *led_cdev, \ | |
205 | enum led_brightness value); \ | |
206 | static void object##_led_update(struct work_struct *ignored); \ | |
207 | static int object##_led_wk; \ | |
208 | DECLARE_WORK(object##_led_work, object##_led_update); \ | |
209 | static struct led_classdev object##_led = { \ | |
210 | .name = "asus:" ledname, \ | |
211 | .brightness_set = object##_led_set, \ | |
212 | } | |
213 | ||
214 | ASUS_LED(mled, "mail"); | |
215 | ASUS_LED(tled, "touchpad"); | |
216 | ASUS_LED(rled, "record"); | |
217 | ASUS_LED(pled, "phone"); | |
218 | ||
85091b71 CC |
219 | /* |
220 | * This function evaluates an ACPI method, given an int as parameter, the | |
221 | * method is searched within the scope of the handle, can be NULL. The output | |
222 | * of the method is written is output, which can also be NULL | |
223 | * | |
224 | * returns 1 if write is successful, 0 else. | |
225 | */ | |
226 | static int write_acpi_int(acpi_handle handle, const char *method, int val, | |
227 | struct acpi_buffer *output) | |
228 | { | |
229 | struct acpi_object_list params; //list of input parameters (an int here) | |
230 | union acpi_object in_obj; //the only param we use | |
231 | acpi_status status; | |
232 | ||
233 | params.count = 1; | |
234 | params.pointer = &in_obj; | |
235 | in_obj.type = ACPI_TYPE_INTEGER; | |
236 | in_obj.integer.value = val; | |
237 | ||
238 | status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); | |
239 | return (status == AE_OK); | |
240 | } | |
241 | ||
242 | static int read_acpi_int(acpi_handle handle, const char *method, int *val, | |
243 | struct acpi_object_list *params) | |
244 | { | |
245 | struct acpi_buffer output; | |
246 | union acpi_object out_obj; | |
247 | acpi_status status; | |
248 | ||
249 | output.length = sizeof(out_obj); | |
250 | output.pointer = &out_obj; | |
251 | ||
252 | status = acpi_evaluate_object(handle, (char *)method, params, &output); | |
253 | *val = out_obj.integer.value; | |
254 | return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER); | |
255 | } | |
256 | ||
4564de17 CC |
257 | static int read_wireless_status(int mask) { |
258 | int status; | |
259 | ||
260 | if (!wireless_status_handle) | |
261 | return (hotk->status & mask) ? 1 : 0; | |
262 | ||
263 | if (read_acpi_int(wireless_status_handle, NULL, &status, NULL)) { | |
264 | return (status & mask) ? 1 : 0; | |
265 | } else | |
266 | printk(ASUS_WARNING "Error reading Wireless status\n"); | |
267 | ||
268 | return (hotk->status & mask) ? 1 : 0; | |
269 | } | |
270 | ||
be18cdab CC |
271 | /* Generic LED functions */ |
272 | static int read_status(int mask) | |
273 | { | |
4564de17 CC |
274 | /* There is a special method for both wireless devices */ |
275 | if (mask == BT_ON || mask == WL_ON) | |
276 | return read_wireless_status(mask); | |
277 | ||
be18cdab CC |
278 | return (hotk->status & mask) ? 1 : 0; |
279 | } | |
280 | ||
281 | static void write_status(acpi_handle handle, int out, int mask, | |
4564de17 | 282 | int invert) |
be18cdab CC |
283 | { |
284 | hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask); | |
285 | ||
286 | if (invert) /* invert target value */ | |
287 | out = !out & 0x1; | |
288 | ||
289 | if (handle && !write_acpi_int(handle, NULL, out, NULL)) | |
290 | printk(ASUS_WARNING " write failed\n"); | |
291 | } | |
292 | ||
293 | /* /sys/class/led handlers */ | |
294 | #define ASUS_LED_HANDLER(object, mask, invert) \ | |
295 | static void object##_led_set(struct led_classdev *led_cdev, \ | |
296 | enum led_brightness value) \ | |
297 | { \ | |
298 | object##_led_wk = value; \ | |
299 | queue_work(led_workqueue, &object##_led_work); \ | |
300 | } \ | |
301 | static void object##_led_update(struct work_struct *ignored) \ | |
302 | { \ | |
303 | int value = object##_led_wk; \ | |
304 | write_status(object##_set_handle, value, (mask), (invert)); \ | |
305 | } | |
306 | ||
307 | ASUS_LED_HANDLER(mled, MLED_ON, 1); | |
308 | ASUS_LED_HANDLER(pled, PLED_ON, 0); | |
309 | ASUS_LED_HANDLER(rled, RLED_ON, 0); | |
310 | ASUS_LED_HANDLER(tled, TLED_ON, 0); | |
311 | ||
6b7091e7 CC |
312 | static int get_lcd_state(void) |
313 | { | |
314 | return read_status(LCD_ON); | |
315 | } | |
316 | ||
317 | static int set_lcd_state(int value) | |
318 | { | |
319 | int lcd = 0; | |
320 | acpi_status status = 0; | |
321 | ||
322 | lcd = value ? 1 : 0; | |
323 | ||
324 | if (lcd == get_lcd_state()) | |
325 | return 0; | |
326 | ||
327 | if(lcd_switch_handle) { | |
328 | status = acpi_evaluate_object(lcd_switch_handle, | |
329 | NULL, NULL, NULL); | |
330 | ||
331 | if (ACPI_FAILURE(status)) | |
332 | printk(ASUS_WARNING "Error switching LCD\n"); | |
333 | } | |
334 | ||
335 | write_status(NULL, lcd, LCD_ON, 0); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | static void lcd_blank(int blank) | |
340 | { | |
341 | struct backlight_device *bd = asus_backlight_device; | |
342 | ||
343 | if(bd) { | |
344 | down(&bd->sem); | |
345 | if(likely(bd->props)) { | |
346 | bd->props->power = blank; | |
347 | if(likely(bd->props->update_status)) | |
348 | bd->props->update_status(bd); | |
349 | } | |
350 | up(&bd->sem); | |
351 | } | |
352 | } | |
353 | ||
354 | static int read_brightness(struct backlight_device *bd) | |
355 | { | |
356 | int value; | |
357 | ||
358 | if (!read_acpi_int(brightness_get_handle, NULL, &value, NULL)) | |
359 | printk(ASUS_WARNING "Error reading brightness\n"); | |
360 | ||
361 | return value; | |
362 | } | |
363 | ||
364 | static int set_brightness(struct backlight_device *bd, int value) | |
365 | { | |
366 | int ret = 0; | |
367 | ||
368 | value = (0 < value) ? ((15 < value) ? 15 : value) : 0; | |
369 | /* 0 <= value <= 15 */ | |
370 | ||
371 | if (!write_acpi_int(brightness_set_handle, NULL, value, NULL)) { | |
372 | printk(ASUS_WARNING "Error changing brightness\n"); | |
373 | ret = -EIO; | |
374 | } | |
375 | ||
376 | return ret; | |
377 | } | |
378 | ||
379 | static int update_bl_status(struct backlight_device *bd) | |
380 | { | |
381 | int rv; | |
382 | int value = bd->props->brightness; | |
383 | ||
384 | rv = set_brightness(bd, value); | |
385 | if(rv) | |
386 | return rv; | |
387 | ||
388 | value = (bd->props->power == FB_BLANK_UNBLANK) ? 1 : 0; | |
389 | return set_lcd_state(value); | |
390 | } | |
391 | ||
85091b71 CC |
392 | /* |
393 | * Platform device handlers | |
394 | */ | |
395 | ||
396 | /* | |
397 | * We write our info in page, we begin at offset off and cannot write more | |
398 | * than count bytes. We set eof to 1 if we handle those 2 values. We return the | |
399 | * number of bytes written in page | |
400 | */ | |
401 | static ssize_t show_infos(struct device *dev, | |
402 | struct device_attribute *attr, char *page) | |
403 | { | |
404 | int len = 0; | |
405 | int temp; | |
406 | char buf[16]; //enough for all info | |
407 | /* | |
408 | * We use the easy way, we don't care of off and count, so we don't set eof | |
409 | * to 1 | |
410 | */ | |
411 | ||
412 | len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n"); | |
413 | len += sprintf(page + len, "Model reference : %s\n", hotk->name); | |
414 | /* | |
415 | * The SFUN method probably allows the original driver to get the list | |
416 | * of features supported by a given model. For now, 0x0100 or 0x0800 | |
417 | * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card. | |
418 | * The significance of others is yet to be found. | |
419 | */ | |
420 | if (read_acpi_int(hotk->handle, "SFUN", &temp, NULL)) | |
421 | len += | |
422 | sprintf(page + len, "SFUN value : 0x%04x\n", temp); | |
423 | /* | |
424 | * Another value for userspace: the ASYM method returns 0x02 for | |
425 | * battery low and 0x04 for battery critical, its readings tend to be | |
426 | * more accurate than those provided by _BST. | |
427 | * Note: since not all the laptops provide this method, errors are | |
428 | * silently ignored. | |
429 | */ | |
430 | if (read_acpi_int(hotk->handle, "ASYM", &temp, NULL)) | |
431 | len += | |
432 | sprintf(page + len, "ASYM value : 0x%04x\n", temp); | |
433 | if (asus_info) { | |
434 | snprintf(buf, 16, "%d", asus_info->length); | |
435 | len += sprintf(page + len, "DSDT length : %s\n", buf); | |
436 | snprintf(buf, 16, "%d", asus_info->checksum); | |
437 | len += sprintf(page + len, "DSDT checksum : %s\n", buf); | |
438 | snprintf(buf, 16, "%d", asus_info->revision); | |
439 | len += sprintf(page + len, "DSDT revision : %s\n", buf); | |
440 | snprintf(buf, 7, "%s", asus_info->oem_id); | |
441 | len += sprintf(page + len, "OEM id : %s\n", buf); | |
442 | snprintf(buf, 9, "%s", asus_info->oem_table_id); | |
443 | len += sprintf(page + len, "OEM table id : %s\n", buf); | |
444 | snprintf(buf, 16, "%x", asus_info->oem_revision); | |
445 | len += sprintf(page + len, "OEM revision : 0x%s\n", buf); | |
446 | snprintf(buf, 5, "%s", asus_info->asl_compiler_id); | |
447 | len += sprintf(page + len, "ASL comp vendor id : %s\n", buf); | |
448 | snprintf(buf, 16, "%x", asus_info->asl_compiler_revision); | |
449 | len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf); | |
450 | } | |
451 | ||
452 | return len; | |
453 | } | |
454 | ||
455 | static int parse_arg(const char *buf, unsigned long count, int *val) | |
456 | { | |
457 | if (!count) | |
458 | return 0; | |
459 | if (count > 31) | |
460 | return -EINVAL; | |
461 | if (sscanf(buf, "%i", val) != 1) | |
462 | return -EINVAL; | |
463 | return count; | |
464 | } | |
465 | ||
4564de17 CC |
466 | static ssize_t store_status(const char *buf, size_t count, |
467 | acpi_handle handle, int mask, int invert) | |
468 | { | |
469 | int rv, value; | |
470 | int out = 0; | |
471 | ||
472 | rv = parse_arg(buf, count, &value); | |
473 | if (rv > 0) | |
474 | out = value ? 1 : 0; | |
475 | ||
476 | write_status(handle, out, mask, invert); | |
477 | ||
478 | return rv; | |
479 | } | |
480 | ||
481 | /* | |
482 | * WLAN | |
483 | */ | |
484 | static ssize_t show_wlan(struct device *dev, | |
485 | struct device_attribute *attr, char *buf) | |
486 | { | |
487 | return sprintf(buf, "%d\n", read_status(WL_ON)); | |
488 | } | |
489 | ||
490 | static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, | |
491 | const char *buf, size_t count) | |
492 | { | |
493 | return store_status(buf, count, wl_switch_handle, WL_ON, 0); | |
494 | } | |
495 | ||
496 | /* | |
497 | * Bluetooth | |
498 | */ | |
499 | static ssize_t show_bluetooth(struct device *dev, | |
500 | struct device_attribute *attr, char *buf) | |
501 | { | |
502 | return sprintf(buf, "%d\n", read_status(BT_ON)); | |
503 | } | |
504 | ||
505 | static ssize_t store_bluetooth(struct device *dev, struct device_attribute *attr, | |
506 | const char *buf, size_t count) | |
507 | { | |
508 | return store_status(buf, count, bt_switch_handle, BT_ON, 0); | |
509 | } | |
510 | ||
78127b4a CC |
511 | /* |
512 | * Display | |
513 | */ | |
514 | static void set_display(int value) | |
515 | { | |
516 | /* no sanity check needed for now */ | |
517 | if (!write_acpi_int(display_set_handle, NULL, value, NULL)) | |
518 | printk(ASUS_WARNING "Error setting display\n"); | |
519 | return; | |
520 | } | |
521 | ||
522 | static int read_display(void) | |
523 | { | |
524 | int value = 0; | |
525 | ||
526 | /* In most of the case, we know how to set the display, but sometime | |
527 | we can't read it */ | |
528 | if(display_get_handle) { | |
529 | if (!read_acpi_int(display_get_handle, NULL, &value, NULL)) | |
530 | printk(ASUS_WARNING "Error reading display status\n"); | |
531 | } | |
532 | ||
533 | value &= 0x0F; /* needed for some models, shouldn't hurt others */ | |
534 | ||
535 | return value; | |
536 | } | |
537 | /* | |
538 | * Now, *this* one could be more user-friendly, but so far, no-one has | |
539 | * complained. The significance of bits is the same as in store_disp() | |
540 | */ | |
541 | static ssize_t show_disp(struct device *dev, | |
542 | struct device_attribute *attr, char *buf) | |
543 | { | |
544 | return sprintf(buf, "%d\n", read_display()); | |
545 | } | |
546 | ||
547 | /* | |
548 | * Experimental support for display switching. As of now: 1 should activate | |
549 | * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI. | |
550 | * Any combination (bitwise) of these will suffice. I never actually tested 4 | |
551 | * displays hooked up simultaneously, so be warned. See the acpi4asus README | |
552 | * for more info. | |
553 | */ | |
554 | static ssize_t store_disp(struct device *dev, struct device_attribute *attr, | |
555 | const char *buf, size_t count) | |
556 | { | |
557 | int rv, value; | |
558 | ||
559 | rv = parse_arg(buf, count, &value); | |
560 | if (rv > 0) | |
561 | set_display(value); | |
562 | return rv; | |
563 | } | |
564 | ||
85091b71 CC |
565 | static void asus_hotk_notify(acpi_handle handle, u32 event, void *data) |
566 | { | |
567 | /* TODO Find a better way to handle events count. */ | |
568 | if (!hotk) | |
569 | return; | |
570 | ||
6b7091e7 CC |
571 | /* |
572 | * We need to tell the backlight device when the backlight power is | |
573 | * switched | |
574 | */ | |
575 | if (event == ATKD_LCD_ON) { | |
576 | write_status(NULL, 1, LCD_ON, 0); | |
577 | lcd_blank(FB_BLANK_UNBLANK); | |
578 | } else if(event == ATKD_LCD_OFF) { | |
579 | write_status(NULL, 0, LCD_ON, 0); | |
580 | lcd_blank(FB_BLANK_POWERDOWN); | |
581 | } | |
582 | ||
85091b71 CC |
583 | acpi_bus_generate_event(hotk->device, event, |
584 | hotk->event_count[event % 128]++); | |
585 | ||
586 | return; | |
587 | } | |
588 | ||
589 | #define ASUS_CREATE_DEVICE_ATTR(_name) \ | |
590 | struct device_attribute dev_attr_##_name = { \ | |
591 | .attr = { \ | |
592 | .name = __stringify(_name), \ | |
593 | .mode = 0, \ | |
594 | .owner = THIS_MODULE }, \ | |
595 | .show = NULL, \ | |
596 | .store = NULL, \ | |
597 | } | |
598 | ||
599 | #define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \ | |
600 | do { \ | |
601 | dev_attr_##_name.attr.mode = _mode; \ | |
602 | dev_attr_##_name.show = _show; \ | |
603 | dev_attr_##_name.store = _store; \ | |
604 | } while(0) | |
605 | ||
606 | static ASUS_CREATE_DEVICE_ATTR(infos); | |
4564de17 CC |
607 | static ASUS_CREATE_DEVICE_ATTR(wlan); |
608 | static ASUS_CREATE_DEVICE_ATTR(bluetooth); | |
78127b4a | 609 | static ASUS_CREATE_DEVICE_ATTR(display); |
85091b71 CC |
610 | |
611 | static struct attribute *asuspf_attributes[] = { | |
612 | &dev_attr_infos.attr, | |
4564de17 CC |
613 | &dev_attr_wlan.attr, |
614 | &dev_attr_bluetooth.attr, | |
78127b4a | 615 | &dev_attr_display.attr, |
85091b71 CC |
616 | NULL |
617 | }; | |
618 | ||
619 | static struct attribute_group asuspf_attribute_group = { | |
620 | .attrs = asuspf_attributes | |
621 | }; | |
622 | ||
623 | static struct platform_driver asuspf_driver = { | |
624 | .driver = { | |
625 | .name = ASUS_HOTK_FILE, | |
626 | .owner = THIS_MODULE, | |
627 | } | |
628 | }; | |
629 | ||
630 | static struct platform_device *asuspf_device; | |
631 | ||
632 | ||
633 | static void asus_hotk_add_fs(void) | |
634 | { | |
635 | ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL); | |
4564de17 CC |
636 | |
637 | if (wl_switch_handle) | |
638 | ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan); | |
639 | ||
640 | if (bt_switch_handle) | |
641 | ASUS_SET_DEVICE_ATTR(bluetooth, 0644, | |
642 | show_bluetooth, store_bluetooth); | |
78127b4a CC |
643 | |
644 | if (display_set_handle && display_get_handle) | |
645 | ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp); | |
646 | else if(display_set_handle) | |
647 | ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp); | |
648 | ||
85091b71 CC |
649 | } |
650 | ||
651 | static int asus_handle_init(char *name, acpi_handle *handle, | |
652 | char **paths, int num_paths) | |
653 | { | |
654 | int i; | |
655 | acpi_status status; | |
656 | ||
657 | for (i = 0; i < num_paths; i++) { | |
658 | status = acpi_get_handle(NULL, paths[i], handle); | |
659 | if (ACPI_SUCCESS(status)) | |
660 | return 0; | |
661 | } | |
662 | ||
663 | *handle = NULL; | |
664 | return -ENODEV; | |
665 | } | |
666 | ||
667 | #define ASUS_HANDLE_INIT(object) \ | |
668 | asus_handle_init(#object, &object##_handle, object##_paths, \ | |
669 | ARRAY_SIZE(object##_paths)) | |
670 | ||
671 | ||
672 | /* | |
673 | * This function is used to initialize the hotk with right values. In this | |
674 | * method, we can make all the detection we want, and modify the hotk struct | |
675 | */ | |
676 | static int asus_hotk_get_info(void) | |
677 | { | |
678 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
679 | struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL }; | |
680 | union acpi_object *model = NULL; | |
4564de17 | 681 | int bsts_result, hwrs_result; |
85091b71 CC |
682 | char *string = NULL; |
683 | acpi_status status; | |
684 | ||
685 | /* | |
686 | * Get DSDT headers early enough to allow for differentiating between | |
687 | * models, but late enough to allow acpi_bus_register_driver() to fail | |
688 | * before doing anything ACPI-specific. Should we encounter a machine, | |
689 | * which needs special handling (i.e. its hotkey device has a different | |
690 | * HID), this bit will be moved. A global variable asus_info contains | |
691 | * the DSDT header. | |
692 | */ | |
693 | status = acpi_get_table(ACPI_TABLE_ID_DSDT, 1, &dsdt); | |
694 | if (ACPI_FAILURE(status)) | |
695 | printk(ASUS_WARNING "Couldn't get the DSDT table header\n"); | |
696 | else | |
697 | asus_info = dsdt.pointer; | |
698 | ||
699 | /* We have to write 0 on init this far for all ASUS models */ | |
700 | if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) { | |
701 | printk(ASUS_ERR "Hotkey initialization failed\n"); | |
702 | return -ENODEV; | |
703 | } | |
704 | ||
705 | /* This needs to be called for some laptops to init properly */ | |
706 | if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result, NULL)) | |
707 | printk(ASUS_WARNING "Error calling BSTS\n"); | |
708 | else if (bsts_result) | |
709 | printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n", | |
710 | bsts_result); | |
711 | ||
712 | /* | |
713 | * Try to match the object returned by INIT to the specific model. | |
714 | * Handle every possible object (or the lack of thereof) the DSDT | |
715 | * writers might throw at us. When in trouble, we pass NULL to | |
716 | * asus_model_match() and try something completely different. | |
717 | */ | |
718 | if (buffer.pointer) { | |
719 | model = buffer.pointer; | |
720 | switch (model->type) { | |
721 | case ACPI_TYPE_STRING: | |
722 | string = model->string.pointer; | |
723 | break; | |
724 | case ACPI_TYPE_BUFFER: | |
725 | string = model->buffer.pointer; | |
726 | break; | |
727 | default: | |
728 | string = ""; | |
729 | break; | |
730 | } | |
731 | } | |
732 | hotk->name = kstrdup(string, GFP_KERNEL); | |
733 | if (!hotk->name) | |
734 | return -ENOMEM; | |
735 | ||
736 | if(*string) | |
737 | printk(ASUS_NOTICE " %s model detected\n", string); | |
738 | ||
be18cdab CC |
739 | ASUS_HANDLE_INIT(mled_set); |
740 | ASUS_HANDLE_INIT(tled_set); | |
741 | ASUS_HANDLE_INIT(rled_set); | |
742 | ASUS_HANDLE_INIT(pled_set); | |
743 | ||
4564de17 CC |
744 | /* |
745 | * The HWRS method return informations about the hardware. | |
746 | * 0x80 bit is for WLAN, 0x100 for Bluetooth. | |
747 | * The significance of others is yet to be found. | |
748 | * If we don't find the method, we assume the device are present. | |
749 | */ | |
750 | if (!read_acpi_int(hotk->handle, "HRWS", &hwrs_result, NULL)) | |
751 | hwrs_result = WL_HWRS | BT_HWRS; | |
752 | ||
753 | if(hwrs_result & WL_HWRS) | |
754 | ASUS_HANDLE_INIT(wl_switch); | |
755 | if(hwrs_result & BT_HWRS) | |
756 | ASUS_HANDLE_INIT(bt_switch); | |
757 | ||
758 | ASUS_HANDLE_INIT(wireless_status); | |
759 | ||
6b7091e7 CC |
760 | ASUS_HANDLE_INIT(brightness_set); |
761 | ASUS_HANDLE_INIT(brightness_get); | |
762 | ||
763 | ASUS_HANDLE_INIT(lcd_switch); | |
764 | ||
78127b4a CC |
765 | ASUS_HANDLE_INIT(display_set); |
766 | ASUS_HANDLE_INIT(display_get); | |
767 | ||
85091b71 CC |
768 | kfree(model); |
769 | ||
770 | return AE_OK; | |
771 | } | |
772 | ||
773 | static int asus_hotk_check(void) | |
774 | { | |
775 | int result = 0; | |
776 | ||
777 | result = acpi_bus_get_status(hotk->device); | |
778 | if (result) | |
779 | return result; | |
780 | ||
781 | if (hotk->device->status.present) { | |
782 | result = asus_hotk_get_info(); | |
783 | } else { | |
784 | printk(ASUS_ERR "Hotkey device not present, aborting\n"); | |
785 | return -EINVAL; | |
786 | } | |
787 | ||
788 | return result; | |
789 | } | |
790 | ||
791 | static int asus_hotk_found; | |
792 | ||
793 | static int asus_hotk_add(struct acpi_device *device) | |
794 | { | |
795 | acpi_status status = AE_OK; | |
796 | int result; | |
797 | ||
798 | if (!device) | |
799 | return -EINVAL; | |
800 | ||
801 | printk(ASUS_NOTICE "Asus Laptop Support version %s\n", | |
802 | ASUS_LAPTOP_VERSION); | |
803 | ||
804 | hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL); | |
805 | if (!hotk) | |
806 | return -ENOMEM; | |
807 | memset(hotk, 0, sizeof(struct asus_hotk)); | |
808 | ||
809 | hotk->handle = device->handle; | |
810 | strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME); | |
811 | strcpy(acpi_device_class(device), ASUS_HOTK_CLASS); | |
812 | acpi_driver_data(device) = hotk; | |
813 | hotk->device = device; | |
814 | ||
815 | result = asus_hotk_check(); | |
816 | if (result) | |
817 | goto end; | |
818 | ||
819 | asus_hotk_add_fs(); | |
820 | ||
821 | /* | |
822 | * We install the handler, it will receive the hotk in parameter, so, we | |
823 | * could add other data to the hotk struct | |
824 | */ | |
825 | status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
826 | asus_hotk_notify, hotk); | |
827 | if (ACPI_FAILURE(status)) | |
828 | printk(ASUS_ERR "Error installing notify handler\n"); | |
829 | ||
830 | asus_hotk_found = 1; | |
831 | ||
6b7091e7 | 832 | /* WLED and BLED are on by default */ |
4564de17 CC |
833 | write_status(bt_switch_handle, 1, BT_ON, 0); |
834 | write_status(wl_switch_handle, 1, WL_ON, 0); | |
835 | ||
6b7091e7 CC |
836 | /* LCD Backlight is on by default */ |
837 | write_status(NULL, 1, LCD_ON, 0); | |
838 | ||
85091b71 CC |
839 | end: |
840 | if (result) { | |
841 | kfree(hotk->name); | |
842 | kfree(hotk); | |
843 | } | |
844 | ||
845 | return result; | |
846 | } | |
847 | ||
848 | static int asus_hotk_remove(struct acpi_device *device, int type) | |
849 | { | |
850 | acpi_status status = 0; | |
851 | ||
852 | if (!device || !acpi_driver_data(device)) | |
853 | return -EINVAL; | |
854 | ||
855 | status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY, | |
856 | asus_hotk_notify); | |
857 | if (ACPI_FAILURE(status)) | |
858 | printk(ASUS_ERR "Error removing notify handler\n"); | |
859 | ||
860 | kfree(hotk->name); | |
861 | kfree(hotk); | |
862 | ||
863 | return 0; | |
864 | } | |
865 | ||
6b7091e7 CC |
866 | static void asus_backlight_exit(void) |
867 | { | |
868 | if(asus_backlight_device) | |
869 | backlight_device_unregister(asus_backlight_device); | |
870 | } | |
871 | ||
be18cdab CC |
872 | #define ASUS_LED_UNREGISTER(object) \ |
873 | if(object##_led.class_dev \ | |
874 | && !IS_ERR(object##_led.class_dev)) \ | |
875 | led_classdev_unregister(&object##_led) | |
876 | ||
877 | static void asus_led_exit(void) | |
878 | { | |
879 | ASUS_LED_UNREGISTER(mled); | |
880 | ASUS_LED_UNREGISTER(tled); | |
881 | ASUS_LED_UNREGISTER(pled); | |
882 | ASUS_LED_UNREGISTER(rled); | |
883 | ||
884 | destroy_workqueue(led_workqueue); | |
885 | } | |
886 | ||
85091b71 CC |
887 | static void __exit asus_laptop_exit(void) |
888 | { | |
6b7091e7 | 889 | asus_backlight_exit(); |
be18cdab CC |
890 | asus_led_exit(); |
891 | ||
85091b71 CC |
892 | acpi_bus_unregister_driver(&asus_hotk_driver); |
893 | sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group); | |
894 | platform_device_unregister(asuspf_device); | |
895 | platform_driver_unregister(&asuspf_driver); | |
896 | ||
897 | kfree(asus_info); | |
898 | } | |
899 | ||
6b7091e7 CC |
900 | static int asus_backlight_init(struct device * dev) |
901 | { | |
902 | struct backlight_device *bd; | |
903 | ||
904 | if(brightness_set_handle && lcd_switch_handle) { | |
905 | bd = backlight_device_register (ASUS_HOTK_FILE, dev, | |
906 | NULL, &asusbl_data); | |
907 | if (IS_ERR (bd)) { | |
908 | printk(ASUS_ERR | |
909 | "Could not register asus backlight device\n"); | |
910 | asus_backlight_device = NULL; | |
911 | return PTR_ERR(bd); | |
912 | } | |
913 | ||
914 | asus_backlight_device = bd; | |
915 | ||
916 | down(&bd->sem); | |
917 | if(likely(bd->props)) { | |
918 | bd->props->brightness = read_brightness(NULL); | |
919 | bd->props->power = FB_BLANK_UNBLANK; | |
920 | if(likely(bd->props->update_status)) | |
921 | bd->props->update_status(bd); | |
922 | } | |
923 | up(&bd->sem); | |
924 | } | |
925 | return 0; | |
926 | } | |
927 | ||
be18cdab CC |
928 | static int asus_led_register(acpi_handle handle, |
929 | struct led_classdev * ldev, | |
930 | struct device * dev) | |
931 | { | |
932 | if(!handle) | |
933 | return 0; | |
934 | ||
935 | return led_classdev_register(dev, ldev); | |
936 | } | |
937 | #define ASUS_LED_REGISTER(object, device) \ | |
938 | asus_led_register(object##_set_handle, &object##_led, device) | |
939 | ||
940 | static int asus_led_init(struct device * dev) | |
941 | { | |
942 | int rv; | |
943 | ||
944 | rv = ASUS_LED_REGISTER(mled, dev); | |
945 | if(rv) | |
946 | return rv; | |
947 | ||
948 | rv = ASUS_LED_REGISTER(tled, dev); | |
949 | if(rv) | |
950 | return rv; | |
951 | ||
952 | rv = ASUS_LED_REGISTER(rled, dev); | |
953 | if(rv) | |
954 | return rv; | |
955 | ||
956 | rv = ASUS_LED_REGISTER(pled, dev); | |
957 | if(rv) | |
958 | return rv; | |
959 | ||
960 | led_workqueue = create_singlethread_workqueue("led_workqueue"); | |
961 | if(!led_workqueue) | |
962 | return -ENOMEM; | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
85091b71 CC |
967 | static int __init asus_laptop_init(void) |
968 | { | |
be18cdab | 969 | struct device *dev; |
85091b71 CC |
970 | int result; |
971 | ||
972 | if (acpi_disabled) | |
973 | return -ENODEV; | |
974 | ||
975 | if (!acpi_specific_hotkey_enabled) { | |
976 | printk(ASUS_ERR "Using generic hotkey driver\n"); | |
977 | return -ENODEV; | |
978 | } | |
979 | ||
980 | result = acpi_bus_register_driver(&asus_hotk_driver); | |
981 | if (result < 0) | |
982 | return result; | |
983 | ||
984 | /* | |
985 | * This is a bit of a kludge. We only want this module loaded | |
986 | * for ASUS systems, but there's currently no way to probe the | |
987 | * ACPI namespace for ASUS HIDs. So we just return failure if | |
988 | * we didn't find one, which will cause the module to be | |
989 | * unloaded. | |
990 | */ | |
991 | if (!asus_hotk_found) { | |
992 | acpi_bus_unregister_driver(&asus_hotk_driver); | |
993 | return -ENODEV; | |
994 | } | |
995 | ||
be18cdab CC |
996 | dev = acpi_get_physical_device(hotk->device->handle); |
997 | ||
6b7091e7 CC |
998 | result = asus_backlight_init(dev); |
999 | if(result) | |
1000 | goto fail_backlight; | |
1001 | ||
be18cdab CC |
1002 | result = asus_led_init(dev); |
1003 | if(result) | |
1004 | goto fail_led; | |
1005 | ||
85091b71 CC |
1006 | /* Register platform stuff */ |
1007 | result = platform_driver_register(&asuspf_driver); | |
1008 | if (result) | |
1009 | goto fail_platform_driver; | |
1010 | ||
1011 | asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1); | |
1012 | if (!asuspf_device) { | |
1013 | result = -ENOMEM; | |
1014 | goto fail_platform_device1; | |
1015 | } | |
1016 | ||
1017 | result = platform_device_add(asuspf_device); | |
1018 | if (result) | |
1019 | goto fail_platform_device2; | |
1020 | ||
1021 | result = sysfs_create_group(&asuspf_device->dev.kobj, | |
1022 | &asuspf_attribute_group); | |
1023 | if (result) | |
1024 | goto fail_sysfs; | |
1025 | ||
1026 | return 0; | |
1027 | ||
1028 | fail_sysfs: | |
1029 | platform_device_del(asuspf_device); | |
1030 | ||
1031 | fail_platform_device2: | |
1032 | platform_device_put(asuspf_device); | |
1033 | ||
1034 | fail_platform_device1: | |
1035 | platform_driver_unregister(&asuspf_driver); | |
1036 | ||
1037 | fail_platform_driver: | |
be18cdab CC |
1038 | asus_led_exit(); |
1039 | ||
1040 | fail_led: | |
6b7091e7 CC |
1041 | asus_backlight_exit(); |
1042 | ||
1043 | fail_backlight: | |
85091b71 CC |
1044 | |
1045 | return result; | |
1046 | } | |
1047 | ||
1048 | module_init(asus_laptop_init); | |
1049 | module_exit(asus_laptop_exit); |