xref: /linux/drivers/input/misc/wistron_btns.c (revision b889fcf63cb62e7fdb7816565e28f44dbe4a76a5)
1 /*
2  * Wistron laptop button driver
3  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
4  * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
5  * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
6  *
7  * You can redistribute and/or modify this program under the terms of the
8  * GNU General Public License version 2 as published by the Free Software
9  * Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
14  * Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with this program; if not, write to the Free Software Foundation, Inc.,
18  * 59 Temple Place Suite 330, Boston, MA 02111-1307, USA.
19  */
20 #include <linux/io.h>
21 #include <linux/dmi.h>
22 #include <linux/init.h>
23 #include <linux/input-polldev.h>
24 #include <linux/input/sparse-keymap.h>
25 #include <linux/interrupt.h>
26 #include <linux/jiffies.h>
27 #include <linux/kernel.h>
28 #include <linux/mc146818rtc.h>
29 #include <linux/module.h>
30 #include <linux/preempt.h>
31 #include <linux/string.h>
32 #include <linux/slab.h>
33 #include <linux/types.h>
34 #include <linux/platform_device.h>
35 #include <linux/leds.h>
36 
37 /* How often we poll keys - msecs */
38 #define POLL_INTERVAL_DEFAULT	500 /* when idle */
39 #define POLL_INTERVAL_BURST	100 /* when a key was recently pressed */
40 
41 /* BIOS subsystem IDs */
42 #define WIFI		0x35
43 #define BLUETOOTH	0x34
44 #define MAIL_LED	0x31
45 
46 MODULE_AUTHOR("Miloslav Trmac <mitr@volny.cz>");
47 MODULE_DESCRIPTION("Wistron laptop button driver");
48 MODULE_LICENSE("GPL v2");
49 MODULE_VERSION("0.3");
50 
51 static bool force; /* = 0; */
52 module_param(force, bool, 0);
53 MODULE_PARM_DESC(force, "Load even if computer is not in database");
54 
55 static char *keymap_name; /* = NULL; */
56 module_param_named(keymap, keymap_name, charp, 0);
57 MODULE_PARM_DESC(keymap, "Keymap name, if it can't be autodetected [generic, 1557/MS2141]");
58 
59 static struct platform_device *wistron_device;
60 
61  /* BIOS interface implementation */
62 
63 static void __iomem *bios_entry_point; /* BIOS routine entry point */
64 static void __iomem *bios_code_map_base;
65 static void __iomem *bios_data_map_base;
66 
67 static u8 cmos_address;
68 
69 struct regs {
70 	u32 eax, ebx, ecx;
71 };
72 
73 static void call_bios(struct regs *regs)
74 {
75 	unsigned long flags;
76 
77 	preempt_disable();
78 	local_irq_save(flags);
79 	asm volatile ("pushl %%ebp;"
80 		      "movl %7, %%ebp;"
81 		      "call *%6;"
82 		      "popl %%ebp"
83 		      : "=a" (regs->eax), "=b" (regs->ebx), "=c" (regs->ecx)
84 		      : "0" (regs->eax), "1" (regs->ebx), "2" (regs->ecx),
85 			"m" (bios_entry_point), "m" (bios_data_map_base)
86 		      : "edx", "edi", "esi", "memory");
87 	local_irq_restore(flags);
88 	preempt_enable();
89 }
90 
91 static ssize_t __init locate_wistron_bios(void __iomem *base)
92 {
93 	static unsigned char __initdata signature[] =
94 		{ 0x42, 0x21, 0x55, 0x30 };
95 	ssize_t offset;
96 
97 	for (offset = 0; offset < 0x10000; offset += 0x10) {
98 		if (check_signature(base + offset, signature,
99 				    sizeof(signature)) != 0)
100 			return offset;
101 	}
102 	return -1;
103 }
104 
105 static int __init map_bios(void)
106 {
107 	void __iomem *base;
108 	ssize_t offset;
109 	u32 entry_point;
110 
111 	base = ioremap(0xF0000, 0x10000); /* Can't fail */
112 	offset = locate_wistron_bios(base);
113 	if (offset < 0) {
114 		printk(KERN_ERR "wistron_btns: BIOS entry point not found\n");
115 		iounmap(base);
116 		return -ENODEV;
117 	}
118 
119 	entry_point = readl(base + offset + 5);
120 	printk(KERN_DEBUG
121 		"wistron_btns: BIOS signature found at %p, entry point %08X\n",
122 		base + offset, entry_point);
123 
124 	if (entry_point >= 0xF0000) {
125 		bios_code_map_base = base;
126 		bios_entry_point = bios_code_map_base + (entry_point & 0xFFFF);
127 	} else {
128 		iounmap(base);
129 		bios_code_map_base = ioremap(entry_point & ~0x3FFF, 0x4000);
130 		if (bios_code_map_base == NULL) {
131 			printk(KERN_ERR
132 				"wistron_btns: Can't map BIOS code at %08X\n",
133 				entry_point & ~0x3FFF);
134 			goto err;
135 		}
136 		bios_entry_point = bios_code_map_base + (entry_point & 0x3FFF);
137 	}
138 	/* The Windows driver maps 0x10000 bytes, we keep only one page... */
139 	bios_data_map_base = ioremap(0x400, 0xc00);
140 	if (bios_data_map_base == NULL) {
141 		printk(KERN_ERR "wistron_btns: Can't map BIOS data\n");
142 		goto err_code;
143 	}
144 	return 0;
145 
146 err_code:
147 	iounmap(bios_code_map_base);
148 err:
149 	return -ENOMEM;
150 }
151 
152 static inline void unmap_bios(void)
153 {
154 	iounmap(bios_code_map_base);
155 	iounmap(bios_data_map_base);
156 }
157 
158  /* BIOS calls */
159 
160 static u16 bios_pop_queue(void)
161 {
162 	struct regs regs;
163 
164 	memset(&regs, 0, sizeof (regs));
165 	regs.eax = 0x9610;
166 	regs.ebx = 0x061C;
167 	regs.ecx = 0x0000;
168 	call_bios(&regs);
169 
170 	return regs.eax;
171 }
172 
173 static void bios_attach(void)
174 {
175 	struct regs regs;
176 
177 	memset(&regs, 0, sizeof (regs));
178 	regs.eax = 0x9610;
179 	regs.ebx = 0x012E;
180 	call_bios(&regs);
181 }
182 
183 static void bios_detach(void)
184 {
185 	struct regs regs;
186 
187 	memset(&regs, 0, sizeof (regs));
188 	regs.eax = 0x9610;
189 	regs.ebx = 0x002E;
190 	call_bios(&regs);
191 }
192 
193 static u8 bios_get_cmos_address(void)
194 {
195 	struct regs regs;
196 
197 	memset(&regs, 0, sizeof (regs));
198 	regs.eax = 0x9610;
199 	regs.ebx = 0x051C;
200 	call_bios(&regs);
201 
202 	return regs.ecx;
203 }
204 
205 static u16 bios_get_default_setting(u8 subsys)
206 {
207 	struct regs regs;
208 
209 	memset(&regs, 0, sizeof (regs));
210 	regs.eax = 0x9610;
211 	regs.ebx = 0x0200 | subsys;
212 	call_bios(&regs);
213 
214 	return regs.eax;
215 }
216 
217 static void bios_set_state(u8 subsys, int enable)
218 {
219 	struct regs regs;
220 
221 	memset(&regs, 0, sizeof (regs));
222 	regs.eax = 0x9610;
223 	regs.ebx = (enable ? 0x0100 : 0x0000) | subsys;
224 	call_bios(&regs);
225 }
226 
227 /* Hardware database */
228 
229 #define KE_WIFI		(KE_LAST + 1)
230 #define KE_BLUETOOTH	(KE_LAST + 2)
231 
232 #define FE_MAIL_LED 0x01
233 #define FE_WIFI_LED 0x02
234 #define FE_UNTESTED 0x80
235 
236 static struct key_entry *keymap; /* = NULL; Current key map */
237 static bool have_wifi;
238 static bool have_bluetooth;
239 static int leds_present;	/* bitmask of leds present */
240 
241 static int __init dmi_matched(const struct dmi_system_id *dmi)
242 {
243 	const struct key_entry *key;
244 
245 	keymap = dmi->driver_data;
246 	for (key = keymap; key->type != KE_END; key++) {
247 		if (key->type == KE_WIFI)
248 			have_wifi = true;
249 		else if (key->type == KE_BLUETOOTH)
250 			have_bluetooth = true;
251 	}
252 	leds_present = key->code & (FE_MAIL_LED | FE_WIFI_LED);
253 
254 	return 1;
255 }
256 
257 static struct key_entry keymap_empty[] __initdata = {
258 	{ KE_END, 0 }
259 };
260 
261 static struct key_entry keymap_fs_amilo_pro_v2000[] __initdata = {
262 	{ KE_KEY,  0x01, {KEY_HELP} },
263 	{ KE_KEY,  0x11, {KEY_PROG1} },
264 	{ KE_KEY,  0x12, {KEY_PROG2} },
265 	{ KE_WIFI, 0x30 },
266 	{ KE_KEY,  0x31, {KEY_MAIL} },
267 	{ KE_KEY,  0x36, {KEY_WWW} },
268 	{ KE_END,  0 }
269 };
270 
271 static struct key_entry keymap_fs_amilo_pro_v3505[] __initdata = {
272 	{ KE_KEY,       0x01, {KEY_HELP} },          /* Fn+F1 */
273 	{ KE_KEY,       0x06, {KEY_DISPLAYTOGGLE} }, /* Fn+F4 */
274 	{ KE_BLUETOOTH, 0x30 },                      /* Fn+F10 */
275 	{ KE_KEY,       0x31, {KEY_MAIL} },          /* mail button */
276 	{ KE_KEY,       0x36, {KEY_WWW} },           /* www button */
277 	{ KE_WIFI,      0x78 },                      /* satellite dish button */
278 	{ KE_END,       0 }
279 };
280 
281 static struct key_entry keymap_fujitsu_n3510[] __initdata = {
282 	{ KE_KEY, 0x11, {KEY_PROG1} },
283 	{ KE_KEY, 0x12, {KEY_PROG2} },
284 	{ KE_KEY, 0x36, {KEY_WWW} },
285 	{ KE_KEY, 0x31, {KEY_MAIL} },
286 	{ KE_KEY, 0x71, {KEY_STOPCD} },
287 	{ KE_KEY, 0x72, {KEY_PLAYPAUSE} },
288 	{ KE_KEY, 0x74, {KEY_REWIND} },
289 	{ KE_KEY, 0x78, {KEY_FORWARD} },
290 	{ KE_END, 0 }
291 };
292 
293 static struct key_entry keymap_wistron_ms2111[] __initdata = {
294 	{ KE_KEY,  0x11, {KEY_PROG1} },
295 	{ KE_KEY,  0x12, {KEY_PROG2} },
296 	{ KE_KEY,  0x13, {KEY_PROG3} },
297 	{ KE_KEY,  0x31, {KEY_MAIL} },
298 	{ KE_KEY,  0x36, {KEY_WWW} },
299 	{ KE_END, FE_MAIL_LED }
300 };
301 
302 static struct key_entry keymap_wistron_md40100[] __initdata = {
303 	{ KE_KEY, 0x01, {KEY_HELP} },
304 	{ KE_KEY, 0x02, {KEY_CONFIG} },
305 	{ KE_KEY, 0x31, {KEY_MAIL} },
306 	{ KE_KEY, 0x36, {KEY_WWW} },
307 	{ KE_KEY, 0x37, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
308 	{ KE_END, FE_MAIL_LED | FE_WIFI_LED | FE_UNTESTED }
309 };
310 
311 static struct key_entry keymap_wistron_ms2141[] __initdata = {
312 	{ KE_KEY,  0x11, {KEY_PROG1} },
313 	{ KE_KEY,  0x12, {KEY_PROG2} },
314 	{ KE_WIFI, 0x30 },
315 	{ KE_KEY,  0x22, {KEY_REWIND} },
316 	{ KE_KEY,  0x23, {KEY_FORWARD} },
317 	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
318 	{ KE_KEY,  0x25, {KEY_STOPCD} },
319 	{ KE_KEY,  0x31, {KEY_MAIL} },
320 	{ KE_KEY,  0x36, {KEY_WWW} },
321 	{ KE_END,  0 }
322 };
323 
324 static struct key_entry keymap_acer_aspire_1500[] __initdata = {
325 	{ KE_KEY, 0x01, {KEY_HELP} },
326 	{ KE_KEY, 0x03, {KEY_POWER} },
327 	{ KE_KEY, 0x11, {KEY_PROG1} },
328 	{ KE_KEY, 0x12, {KEY_PROG2} },
329 	{ KE_WIFI, 0x30 },
330 	{ KE_KEY, 0x31, {KEY_MAIL} },
331 	{ KE_KEY, 0x36, {KEY_WWW} },
332 	{ KE_KEY, 0x49, {KEY_CONFIG} },
333 	{ KE_BLUETOOTH, 0x44 },
334 	{ KE_END, FE_UNTESTED }
335 };
336 
337 static struct key_entry keymap_acer_aspire_1600[] __initdata = {
338 	{ KE_KEY, 0x01, {KEY_HELP} },
339 	{ KE_KEY, 0x03, {KEY_POWER} },
340 	{ KE_KEY, 0x08, {KEY_MUTE} },
341 	{ KE_KEY, 0x11, {KEY_PROG1} },
342 	{ KE_KEY, 0x12, {KEY_PROG2} },
343 	{ KE_KEY, 0x13, {KEY_PROG3} },
344 	{ KE_KEY, 0x31, {KEY_MAIL} },
345 	{ KE_KEY, 0x36, {KEY_WWW} },
346 	{ KE_KEY, 0x49, {KEY_CONFIG} },
347 	{ KE_WIFI, 0x30 },
348 	{ KE_BLUETOOTH, 0x44 },
349 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
350 };
351 
352 /* 3020 has been tested */
353 static struct key_entry keymap_acer_aspire_5020[] __initdata = {
354 	{ KE_KEY, 0x01, {KEY_HELP} },
355 	{ KE_KEY, 0x03, {KEY_POWER} },
356 	{ KE_KEY, 0x05, {KEY_SWITCHVIDEOMODE} }, /* Display selection */
357 	{ KE_KEY, 0x11, {KEY_PROG1} },
358 	{ KE_KEY, 0x12, {KEY_PROG2} },
359 	{ KE_KEY, 0x31, {KEY_MAIL} },
360 	{ KE_KEY, 0x36, {KEY_WWW} },
361 	{ KE_KEY, 0x6a, {KEY_CONFIG} },
362 	{ KE_WIFI, 0x30 },
363 	{ KE_BLUETOOTH, 0x44 },
364 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
365 };
366 
367 static struct key_entry keymap_acer_travelmate_2410[] __initdata = {
368 	{ KE_KEY, 0x01, {KEY_HELP} },
369 	{ KE_KEY, 0x6d, {KEY_POWER} },
370 	{ KE_KEY, 0x11, {KEY_PROG1} },
371 	{ KE_KEY, 0x12, {KEY_PROG2} },
372 	{ KE_KEY, 0x31, {KEY_MAIL} },
373 	{ KE_KEY, 0x36, {KEY_WWW} },
374 	{ KE_KEY, 0x6a, {KEY_CONFIG} },
375 	{ KE_WIFI, 0x30 },
376 	{ KE_BLUETOOTH, 0x44 },
377 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
378 };
379 
380 static struct key_entry keymap_acer_travelmate_110[] __initdata = {
381 	{ KE_KEY, 0x01, {KEY_HELP} },
382 	{ KE_KEY, 0x02, {KEY_CONFIG} },
383 	{ KE_KEY, 0x03, {KEY_POWER} },
384 	{ KE_KEY, 0x08, {KEY_MUTE} },
385 	{ KE_KEY, 0x11, {KEY_PROG1} },
386 	{ KE_KEY, 0x12, {KEY_PROG2} },
387 	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
388 	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
389 	{ KE_KEY, 0x31, {KEY_MAIL} },
390 	{ KE_KEY, 0x36, {KEY_WWW} },
391 	{ KE_SW, 0x4a, {.sw = {SW_LID, 1}} }, /* lid close */
392 	{ KE_SW, 0x4b, {.sw = {SW_LID, 0}} }, /* lid open */
393 	{ KE_WIFI, 0x30 },
394 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
395 };
396 
397 static struct key_entry keymap_acer_travelmate_300[] __initdata = {
398 	{ KE_KEY, 0x01, {KEY_HELP} },
399 	{ KE_KEY, 0x02, {KEY_CONFIG} },
400 	{ KE_KEY, 0x03, {KEY_POWER} },
401 	{ KE_KEY, 0x08, {KEY_MUTE} },
402 	{ KE_KEY, 0x11, {KEY_PROG1} },
403 	{ KE_KEY, 0x12, {KEY_PROG2} },
404 	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
405 	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
406 	{ KE_KEY, 0x31, {KEY_MAIL} },
407 	{ KE_KEY, 0x36, {KEY_WWW} },
408 	{ KE_WIFI, 0x30 },
409 	{ KE_BLUETOOTH, 0x44 },
410 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
411 };
412 
413 static struct key_entry keymap_acer_travelmate_380[] __initdata = {
414 	{ KE_KEY, 0x01, {KEY_HELP} },
415 	{ KE_KEY, 0x02, {KEY_CONFIG} },
416 	{ KE_KEY, 0x03, {KEY_POWER} }, /* not 370 */
417 	{ KE_KEY, 0x11, {KEY_PROG1} },
418 	{ KE_KEY, 0x12, {KEY_PROG2} },
419 	{ KE_KEY, 0x13, {KEY_PROG3} },
420 	{ KE_KEY, 0x31, {KEY_MAIL} },
421 	{ KE_KEY, 0x36, {KEY_WWW} },
422 	{ KE_WIFI, 0x30 },
423 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
424 };
425 
426 /* unusual map */
427 static struct key_entry keymap_acer_travelmate_220[] __initdata = {
428 	{ KE_KEY, 0x01, {KEY_HELP} },
429 	{ KE_KEY, 0x02, {KEY_CONFIG} },
430 	{ KE_KEY, 0x11, {KEY_MAIL} },
431 	{ KE_KEY, 0x12, {KEY_WWW} },
432 	{ KE_KEY, 0x13, {KEY_PROG2} },
433 	{ KE_KEY, 0x31, {KEY_PROG1} },
434 	{ KE_END, FE_WIFI_LED | FE_UNTESTED }
435 };
436 
437 static struct key_entry keymap_acer_travelmate_230[] __initdata = {
438 	{ KE_KEY, 0x01, {KEY_HELP} },
439 	{ KE_KEY, 0x02, {KEY_CONFIG} },
440 	{ KE_KEY, 0x11, {KEY_PROG1} },
441 	{ KE_KEY, 0x12, {KEY_PROG2} },
442 	{ KE_KEY, 0x31, {KEY_MAIL} },
443 	{ KE_KEY, 0x36, {KEY_WWW} },
444 	{ KE_END, FE_WIFI_LED | FE_UNTESTED }
445 };
446 
447 static struct key_entry keymap_acer_travelmate_240[] __initdata = {
448 	{ KE_KEY, 0x01, {KEY_HELP} },
449 	{ KE_KEY, 0x02, {KEY_CONFIG} },
450 	{ KE_KEY, 0x03, {KEY_POWER} },
451 	{ KE_KEY, 0x08, {KEY_MUTE} },
452 	{ KE_KEY, 0x31, {KEY_MAIL} },
453 	{ KE_KEY, 0x36, {KEY_WWW} },
454 	{ KE_KEY, 0x11, {KEY_PROG1} },
455 	{ KE_KEY, 0x12, {KEY_PROG2} },
456 	{ KE_BLUETOOTH, 0x44 },
457 	{ KE_WIFI, 0x30 },
458 	{ KE_END, FE_UNTESTED }
459 };
460 
461 static struct key_entry keymap_acer_travelmate_350[] __initdata = {
462 	{ KE_KEY, 0x01, {KEY_HELP} },
463 	{ KE_KEY, 0x02, {KEY_CONFIG} },
464 	{ KE_KEY, 0x11, {KEY_PROG1} },
465 	{ KE_KEY, 0x12, {KEY_PROG2} },
466 	{ KE_KEY, 0x13, {KEY_MAIL} },
467 	{ KE_KEY, 0x14, {KEY_PROG3} },
468 	{ KE_KEY, 0x15, {KEY_WWW} },
469 	{ KE_END, FE_MAIL_LED | FE_WIFI_LED | FE_UNTESTED }
470 };
471 
472 static struct key_entry keymap_acer_travelmate_360[] __initdata = {
473 	{ KE_KEY, 0x01, {KEY_HELP} },
474 	{ KE_KEY, 0x02, {KEY_CONFIG} },
475 	{ KE_KEY, 0x11, {KEY_PROG1} },
476 	{ KE_KEY, 0x12, {KEY_PROG2} },
477 	{ KE_KEY, 0x13, {KEY_MAIL} },
478 	{ KE_KEY, 0x14, {KEY_PROG3} },
479 	{ KE_KEY, 0x15, {KEY_WWW} },
480 	{ KE_KEY, 0x40, {KEY_WLAN} },
481 	{ KE_END, FE_WIFI_LED | FE_UNTESTED } /* no mail led */
482 };
483 
484 /* Wifi subsystem only activates the led. Therefore we need to pass
485  * wifi event as a normal key, then userspace can really change the wifi state.
486  * TODO we need to export led state to userspace (wifi and mail) */
487 static struct key_entry keymap_acer_travelmate_610[] __initdata = {
488 	{ KE_KEY, 0x01, {KEY_HELP} },
489 	{ KE_KEY, 0x02, {KEY_CONFIG} },
490 	{ KE_KEY, 0x11, {KEY_PROG1} },
491 	{ KE_KEY, 0x12, {KEY_PROG2} },
492 	{ KE_KEY, 0x13, {KEY_PROG3} },
493 	{ KE_KEY, 0x14, {KEY_MAIL} },
494 	{ KE_KEY, 0x15, {KEY_WWW} },
495 	{ KE_KEY, 0x40, {KEY_WLAN} },
496 	{ KE_END, FE_MAIL_LED | FE_WIFI_LED }
497 };
498 
499 static struct key_entry keymap_acer_travelmate_630[] __initdata = {
500 	{ KE_KEY, 0x01, {KEY_HELP} },
501 	{ KE_KEY, 0x02, {KEY_CONFIG} },
502 	{ KE_KEY, 0x03, {KEY_POWER} },
503 	{ KE_KEY, 0x08, {KEY_MUTE} }, /* not 620 */
504 	{ KE_KEY, 0x11, {KEY_PROG1} },
505 	{ KE_KEY, 0x12, {KEY_PROG2} },
506 	{ KE_KEY, 0x13, {KEY_PROG3} },
507 	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
508 	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
509 	{ KE_KEY, 0x31, {KEY_MAIL} },
510 	{ KE_KEY, 0x36, {KEY_WWW} },
511 	{ KE_WIFI, 0x30 },
512 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
513 };
514 
515 static struct key_entry keymap_aopen_1559as[] __initdata = {
516 	{ KE_KEY,  0x01, {KEY_HELP} },
517 	{ KE_KEY,  0x06, {KEY_PROG3} },
518 	{ KE_KEY,  0x11, {KEY_PROG1} },
519 	{ KE_KEY,  0x12, {KEY_PROG2} },
520 	{ KE_WIFI, 0x30 },
521 	{ KE_KEY,  0x31, {KEY_MAIL} },
522 	{ KE_KEY,  0x36, {KEY_WWW} },
523 	{ KE_END,  0 },
524 };
525 
526 static struct key_entry keymap_fs_amilo_d88x0[] __initdata = {
527 	{ KE_KEY, 0x01, {KEY_HELP} },
528 	{ KE_KEY, 0x08, {KEY_MUTE} },
529 	{ KE_KEY, 0x31, {KEY_MAIL} },
530 	{ KE_KEY, 0x36, {KEY_WWW} },
531 	{ KE_KEY, 0x11, {KEY_PROG1} },
532 	{ KE_KEY, 0x12, {KEY_PROG2} },
533 	{ KE_KEY, 0x13, {KEY_PROG3} },
534 	{ KE_END, FE_MAIL_LED | FE_WIFI_LED | FE_UNTESTED }
535 };
536 
537 static struct key_entry keymap_wistron_md2900[] __initdata = {
538 	{ KE_KEY, 0x01, {KEY_HELP} },
539 	{ KE_KEY, 0x02, {KEY_CONFIG} },
540 	{ KE_KEY, 0x11, {KEY_PROG1} },
541 	{ KE_KEY, 0x12, {KEY_PROG2} },
542 	{ KE_KEY, 0x31, {KEY_MAIL} },
543 	{ KE_KEY, 0x36, {KEY_WWW} },
544 	{ KE_WIFI, 0x30 },
545 	{ KE_END, FE_MAIL_LED | FE_UNTESTED }
546 };
547 
548 static struct key_entry keymap_wistron_md96500[] __initdata = {
549 	{ KE_KEY, 0x01, {KEY_HELP} },
550 	{ KE_KEY, 0x02, {KEY_CONFIG} },
551 	{ KE_KEY, 0x05, {KEY_SWITCHVIDEOMODE} }, /* Display selection */
552 	{ KE_KEY, 0x06, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
553 	{ KE_KEY, 0x08, {KEY_MUTE} },
554 	{ KE_KEY, 0x11, {KEY_PROG1} },
555 	{ KE_KEY, 0x12, {KEY_PROG2} },
556 	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
557 	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
558 	{ KE_KEY, 0x22, {KEY_REWIND} },
559 	{ KE_KEY, 0x23, {KEY_FORWARD} },
560 	{ KE_KEY, 0x24, {KEY_PLAYPAUSE} },
561 	{ KE_KEY, 0x25, {KEY_STOPCD} },
562 	{ KE_KEY, 0x31, {KEY_MAIL} },
563 	{ KE_KEY, 0x36, {KEY_WWW} },
564 	{ KE_WIFI, 0x30 },
565 	{ KE_BLUETOOTH, 0x44 },
566 	{ KE_END, FE_UNTESTED }
567 };
568 
569 static struct key_entry keymap_wistron_generic[] __initdata = {
570 	{ KE_KEY, 0x01, {KEY_HELP} },
571 	{ KE_KEY, 0x02, {KEY_CONFIG} },
572 	{ KE_KEY, 0x03, {KEY_POWER} },
573 	{ KE_KEY, 0x05, {KEY_SWITCHVIDEOMODE} }, /* Display selection */
574 	{ KE_KEY, 0x06, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
575 	{ KE_KEY, 0x08, {KEY_MUTE} },
576 	{ KE_KEY, 0x11, {KEY_PROG1} },
577 	{ KE_KEY, 0x12, {KEY_PROG2} },
578 	{ KE_KEY, 0x13, {KEY_PROG3} },
579 	{ KE_KEY, 0x14, {KEY_MAIL} },
580 	{ KE_KEY, 0x15, {KEY_WWW} },
581 	{ KE_KEY, 0x20, {KEY_VOLUMEUP} },
582 	{ KE_KEY, 0x21, {KEY_VOLUMEDOWN} },
583 	{ KE_KEY, 0x22, {KEY_REWIND} },
584 	{ KE_KEY, 0x23, {KEY_FORWARD} },
585 	{ KE_KEY, 0x24, {KEY_PLAYPAUSE} },
586 	{ KE_KEY, 0x25, {KEY_STOPCD} },
587 	{ KE_KEY, 0x31, {KEY_MAIL} },
588 	{ KE_KEY, 0x36, {KEY_WWW} },
589 	{ KE_KEY, 0x37, {KEY_DISPLAYTOGGLE} }, /* Display on/off */
590 	{ KE_KEY, 0x40, {KEY_WLAN} },
591 	{ KE_KEY, 0x49, {KEY_CONFIG} },
592 	{ KE_SW, 0x4a, {.sw = {SW_LID, 1}} }, /* lid close */
593 	{ KE_SW, 0x4b, {.sw = {SW_LID, 0}} }, /* lid open */
594 	{ KE_KEY, 0x6a, {KEY_CONFIG} },
595 	{ KE_KEY, 0x6d, {KEY_POWER} },
596 	{ KE_KEY, 0x71, {KEY_STOPCD} },
597 	{ KE_KEY, 0x72, {KEY_PLAYPAUSE} },
598 	{ KE_KEY, 0x74, {KEY_REWIND} },
599 	{ KE_KEY, 0x78, {KEY_FORWARD} },
600 	{ KE_WIFI, 0x30 },
601 	{ KE_BLUETOOTH, 0x44 },
602 	{ KE_END, 0 }
603 };
604 
605 static struct key_entry keymap_aopen_1557[] __initdata = {
606 	{ KE_KEY,  0x01, {KEY_HELP} },
607 	{ KE_KEY,  0x11, {KEY_PROG1} },
608 	{ KE_KEY,  0x12, {KEY_PROG2} },
609 	{ KE_WIFI, 0x30 },
610 	{ KE_KEY,  0x22, {KEY_REWIND} },
611 	{ KE_KEY,  0x23, {KEY_FORWARD} },
612 	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
613 	{ KE_KEY,  0x25, {KEY_STOPCD} },
614 	{ KE_KEY,  0x31, {KEY_MAIL} },
615 	{ KE_KEY,  0x36, {KEY_WWW} },
616 	{ KE_END,  0 }
617 };
618 
619 static struct key_entry keymap_prestigio[] __initdata = {
620 	{ KE_KEY,  0x11, {KEY_PROG1} },
621 	{ KE_KEY,  0x12, {KEY_PROG2} },
622 	{ KE_WIFI, 0x30 },
623 	{ KE_KEY,  0x22, {KEY_REWIND} },
624 	{ KE_KEY,  0x23, {KEY_FORWARD} },
625 	{ KE_KEY,  0x24, {KEY_PLAYPAUSE} },
626 	{ KE_KEY,  0x25, {KEY_STOPCD} },
627 	{ KE_KEY,  0x31, {KEY_MAIL} },
628 	{ KE_KEY,  0x36, {KEY_WWW} },
629 	{ KE_END,  0 }
630 };
631 
632 
633 /*
634  * If your machine is not here (which is currently rather likely), please send
635  * a list of buttons and their key codes (reported when loading this module
636  * with force=1) and the output of dmidecode to $MODULE_AUTHOR.
637  */
638 static const struct dmi_system_id __initconst dmi_ids[] = {
639 	{
640 		/* Fujitsu-Siemens Amilo Pro V2000 */
641 		.callback = dmi_matched,
642 		.matches = {
643 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
644 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro V2000"),
645 		},
646 		.driver_data = keymap_fs_amilo_pro_v2000
647 	},
648 	{
649 		/* Fujitsu-Siemens Amilo Pro Edition V3505 */
650 		.callback = dmi_matched,
651 		.matches = {
652 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
653 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro Edition V3505"),
654 		},
655 		.driver_data = keymap_fs_amilo_pro_v3505
656 	},
657 	{
658 		/* Fujitsu-Siemens Amilo M7400 */
659 		.callback = dmi_matched,
660 		.matches = {
661 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
662 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO M        "),
663 		},
664 		.driver_data = keymap_fs_amilo_pro_v2000
665 	},
666 	{
667 		/* Maxdata Pro 7000 DX */
668 		.callback = dmi_matched,
669 		.matches = {
670 			DMI_MATCH(DMI_SYS_VENDOR, "MAXDATA"),
671 			DMI_MATCH(DMI_PRODUCT_NAME, "Pro 7000"),
672 		},
673 		.driver_data = keymap_fs_amilo_pro_v2000
674 	},
675 	{
676 		/* Fujitsu N3510 */
677 		.callback = dmi_matched,
678 		.matches = {
679 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
680 			DMI_MATCH(DMI_PRODUCT_NAME, "N3510"),
681 		},
682 		.driver_data = keymap_fujitsu_n3510
683 	},
684 	{
685 		/* Acer Aspire 1500 */
686 		.callback = dmi_matched,
687 		.matches = {
688 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
689 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1500"),
690 		},
691 		.driver_data = keymap_acer_aspire_1500
692 	},
693 	{
694 		/* Acer Aspire 1600 */
695 		.callback = dmi_matched,
696 		.matches = {
697 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
698 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1600"),
699 		},
700 		.driver_data = keymap_acer_aspire_1600
701 	},
702 	{
703 		/* Acer Aspire 3020 */
704 		.callback = dmi_matched,
705 		.matches = {
706 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
707 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3020"),
708 		},
709 		.driver_data = keymap_acer_aspire_5020
710 	},
711 	{
712 		/* Acer Aspire 5020 */
713 		.callback = dmi_matched,
714 		.matches = {
715 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
716 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5020"),
717 		},
718 		.driver_data = keymap_acer_aspire_5020
719 	},
720 	{
721 		/* Acer TravelMate 2100 */
722 		.callback = dmi_matched,
723 		.matches = {
724 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
725 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2100"),
726 		},
727 		.driver_data = keymap_acer_aspire_5020
728 	},
729 	{
730 		/* Acer TravelMate 2410 */
731 		.callback = dmi_matched,
732 		.matches = {
733 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
734 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2410"),
735 		},
736 		.driver_data = keymap_acer_travelmate_2410
737 	},
738 	{
739 		/* Acer TravelMate C300 */
740 		.callback = dmi_matched,
741 		.matches = {
742 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
743 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate C300"),
744 		},
745 		.driver_data = keymap_acer_travelmate_300
746 	},
747 	{
748 		/* Acer TravelMate C100 */
749 		.callback = dmi_matched,
750 		.matches = {
751 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
752 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate C100"),
753 		},
754 		.driver_data = keymap_acer_travelmate_300
755 	},
756 	{
757 		/* Acer TravelMate C110 */
758 		.callback = dmi_matched,
759 		.matches = {
760 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
761 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate C110"),
762 		},
763 		.driver_data = keymap_acer_travelmate_110
764 	},
765 	{
766 		/* Acer TravelMate 380 */
767 		.callback = dmi_matched,
768 		.matches = {
769 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
770 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 380"),
771 		},
772 		.driver_data = keymap_acer_travelmate_380
773 	},
774 	{
775 		/* Acer TravelMate 370 */
776 		.callback = dmi_matched,
777 		.matches = {
778 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
779 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 370"),
780 		},
781 		.driver_data = keymap_acer_travelmate_380 /* keyboard minus 1 key */
782 	},
783 	{
784 		/* Acer TravelMate 220 */
785 		.callback = dmi_matched,
786 		.matches = {
787 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
788 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 220"),
789 		},
790 		.driver_data = keymap_acer_travelmate_220
791 	},
792 	{
793 		/* Acer TravelMate 260 */
794 		.callback = dmi_matched,
795 		.matches = {
796 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
797 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 260"),
798 		},
799 		.driver_data = keymap_acer_travelmate_220
800 	},
801 	{
802 		/* Acer TravelMate 230 */
803 		.callback = dmi_matched,
804 		.matches = {
805 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
806 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 230"),
807 			/* acerhk looks for "TravelMate F4..." ?! */
808 		},
809 		.driver_data = keymap_acer_travelmate_230
810 	},
811 	{
812 		/* Acer TravelMate 280 */
813 		.callback = dmi_matched,
814 		.matches = {
815 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
816 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 280"),
817 		},
818 		.driver_data = keymap_acer_travelmate_230
819 	},
820 	{
821 		/* Acer TravelMate 240 */
822 		.callback = dmi_matched,
823 		.matches = {
824 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
825 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 240"),
826 		},
827 		.driver_data = keymap_acer_travelmate_240
828 	},
829 	{
830 		/* Acer TravelMate 250 */
831 		.callback = dmi_matched,
832 		.matches = {
833 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
834 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 250"),
835 		},
836 		.driver_data = keymap_acer_travelmate_240
837 	},
838 	{
839 		/* Acer TravelMate 2424NWXCi */
840 		.callback = dmi_matched,
841 		.matches = {
842 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
843 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2420"),
844 		},
845 		.driver_data = keymap_acer_travelmate_240
846 	},
847 	{
848 		/* Acer TravelMate 350 */
849 		.callback = dmi_matched,
850 		.matches = {
851 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
852 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 350"),
853 		},
854 		.driver_data = keymap_acer_travelmate_350
855 	},
856 	{
857 		/* Acer TravelMate 360 */
858 		.callback = dmi_matched,
859 		.matches = {
860 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
861 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
862 		},
863 		.driver_data = keymap_acer_travelmate_360
864 	},
865 	{
866 		/* Acer TravelMate 610 */
867 		.callback = dmi_matched,
868 		.matches = {
869 			DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
870 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 610"),
871 		},
872 		.driver_data = keymap_acer_travelmate_610
873 	},
874 	{
875 		/* Acer TravelMate 620 */
876 		.callback = dmi_matched,
877 		.matches = {
878 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
879 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 620"),
880 		},
881 		.driver_data = keymap_acer_travelmate_630
882 	},
883 	{
884 		/* Acer TravelMate 630 */
885 		.callback = dmi_matched,
886 		.matches = {
887 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
888 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 630"),
889 		},
890 		.driver_data = keymap_acer_travelmate_630
891 	},
892 	{
893 		/* AOpen 1559AS */
894 		.callback = dmi_matched,
895 		.matches = {
896 			DMI_MATCH(DMI_PRODUCT_NAME, "E2U"),
897 			DMI_MATCH(DMI_BOARD_NAME, "E2U"),
898 		},
899 		.driver_data = keymap_aopen_1559as
900 	},
901 	{
902 		/* Medion MD 9783 */
903 		.callback = dmi_matched,
904 		.matches = {
905 			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
906 			DMI_MATCH(DMI_PRODUCT_NAME, "MD 9783"),
907 		},
908 		.driver_data = keymap_wistron_ms2111
909 	},
910 	{
911 		/* Medion MD 40100 */
912 		.callback = dmi_matched,
913 		.matches = {
914 			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
915 			DMI_MATCH(DMI_PRODUCT_NAME, "WID2000"),
916 		},
917 		.driver_data = keymap_wistron_md40100
918 	},
919 	{
920 		/* Medion MD 2900 */
921 		.callback = dmi_matched,
922 		.matches = {
923 			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"),
924 			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2000"),
925 		},
926 		.driver_data = keymap_wistron_md2900
927 	},
928 	{
929 		/* Medion MD 42200 */
930 		.callback = dmi_matched,
931 		.matches = {
932 			DMI_MATCH(DMI_SYS_VENDOR, "Medion"),
933 			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2030"),
934 		},
935 		.driver_data = keymap_fs_amilo_pro_v2000
936 	},
937 	{
938 		/* Medion MD 96500 */
939 		.callback = dmi_matched,
940 		.matches = {
941 			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONPC"),
942 			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2040"),
943 		},
944 		.driver_data = keymap_wistron_md96500
945 	},
946 	{
947 		/* Medion MD 95400 */
948 		.callback = dmi_matched,
949 		.matches = {
950 			DMI_MATCH(DMI_SYS_VENDOR, "MEDIONPC"),
951 			DMI_MATCH(DMI_PRODUCT_NAME, "WIM 2050"),
952 		},
953 		.driver_data = keymap_wistron_md96500
954 	},
955 	{
956 		/* Fujitsu Siemens Amilo D7820 */
957 		.callback = dmi_matched,
958 		.matches = {
959 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), /* not sure */
960 			DMI_MATCH(DMI_PRODUCT_NAME, "Amilo D"),
961 		},
962 		.driver_data = keymap_fs_amilo_d88x0
963 	},
964 	{
965 		/* Fujitsu Siemens Amilo D88x0 */
966 		.callback = dmi_matched,
967 		.matches = {
968 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
969 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO D"),
970 		},
971 		.driver_data = keymap_fs_amilo_d88x0
972 	},
973 	{ NULL, }
974 };
975 
976 /* Copy the good keymap, as the original ones are free'd */
977 static int __init copy_keymap(void)
978 {
979 	const struct key_entry *key;
980 	struct key_entry *new_keymap;
981 	unsigned int length = 1;
982 
983 	for (key = keymap; key->type != KE_END; key++)
984 		length++;
985 
986 	new_keymap = kmemdup(keymap, length * sizeof(struct key_entry),
987 			     GFP_KERNEL);
988 	if (!new_keymap)
989 		return -ENOMEM;
990 
991 	keymap = new_keymap;
992 
993 	return 0;
994 }
995 
996 static int __init select_keymap(void)
997 {
998 	dmi_check_system(dmi_ids);
999 	if (keymap_name != NULL) {
1000 		if (strcmp (keymap_name, "1557/MS2141") == 0)
1001 			keymap = keymap_wistron_ms2141;
1002 		else if (strcmp (keymap_name, "aopen1557") == 0)
1003 			keymap = keymap_aopen_1557;
1004 		else if (strcmp (keymap_name, "prestigio") == 0)
1005 			keymap = keymap_prestigio;
1006 		else if (strcmp (keymap_name, "generic") == 0)
1007 			keymap = keymap_wistron_generic;
1008 		else {
1009 			printk(KERN_ERR "wistron_btns: Keymap unknown\n");
1010 			return -EINVAL;
1011 		}
1012 	}
1013 	if (keymap == NULL) {
1014 		if (!force) {
1015 			printk(KERN_ERR "wistron_btns: System unknown\n");
1016 			return -ENODEV;
1017 		}
1018 		keymap = keymap_empty;
1019 	}
1020 
1021 	return copy_keymap();
1022 }
1023 
1024  /* Input layer interface */
1025 
1026 static struct input_polled_dev *wistron_idev;
1027 static unsigned long jiffies_last_press;
1028 static bool wifi_enabled;
1029 static bool bluetooth_enabled;
1030 
1031  /* led management */
1032 static void wistron_mail_led_set(struct led_classdev *led_cdev,
1033 				enum led_brightness value)
1034 {
1035 	bios_set_state(MAIL_LED, (value != LED_OFF) ? 1 : 0);
1036 }
1037 
1038 /* same as setting up wifi card, but for laptops on which the led is managed */
1039 static void wistron_wifi_led_set(struct led_classdev *led_cdev,
1040 				enum led_brightness value)
1041 {
1042 	bios_set_state(WIFI, (value != LED_OFF) ? 1 : 0);
1043 }
1044 
1045 static struct led_classdev wistron_mail_led = {
1046 	.name			= "wistron:green:mail",
1047 	.brightness_set		= wistron_mail_led_set,
1048 };
1049 
1050 static struct led_classdev wistron_wifi_led = {
1051 	.name			= "wistron:red:wifi",
1052 	.brightness_set		= wistron_wifi_led_set,
1053 };
1054 
1055 static void wistron_led_init(struct device *parent)
1056 {
1057 	if (leds_present & FE_WIFI_LED) {
1058 		u16 wifi = bios_get_default_setting(WIFI);
1059 		if (wifi & 1) {
1060 			wistron_wifi_led.brightness = (wifi & 2) ? LED_FULL : LED_OFF;
1061 			if (led_classdev_register(parent, &wistron_wifi_led))
1062 				leds_present &= ~FE_WIFI_LED;
1063 			else
1064 				bios_set_state(WIFI, wistron_wifi_led.brightness);
1065 
1066 		} else
1067 			leds_present &= ~FE_WIFI_LED;
1068 	}
1069 
1070 	if (leds_present & FE_MAIL_LED) {
1071 		/* bios_get_default_setting(MAIL) always retuns 0, so just turn the led off */
1072 		wistron_mail_led.brightness = LED_OFF;
1073 		if (led_classdev_register(parent, &wistron_mail_led))
1074 			leds_present &= ~FE_MAIL_LED;
1075 		else
1076 			bios_set_state(MAIL_LED, wistron_mail_led.brightness);
1077 	}
1078 }
1079 
1080 static void wistron_led_remove(void)
1081 {
1082 	if (leds_present & FE_MAIL_LED)
1083 		led_classdev_unregister(&wistron_mail_led);
1084 
1085 	if (leds_present & FE_WIFI_LED)
1086 		led_classdev_unregister(&wistron_wifi_led);
1087 }
1088 
1089 static inline void wistron_led_suspend(void)
1090 {
1091 	if (leds_present & FE_MAIL_LED)
1092 		led_classdev_suspend(&wistron_mail_led);
1093 
1094 	if (leds_present & FE_WIFI_LED)
1095 		led_classdev_suspend(&wistron_wifi_led);
1096 }
1097 
1098 static inline void wistron_led_resume(void)
1099 {
1100 	if (leds_present & FE_MAIL_LED)
1101 		led_classdev_resume(&wistron_mail_led);
1102 
1103 	if (leds_present & FE_WIFI_LED)
1104 		led_classdev_resume(&wistron_wifi_led);
1105 }
1106 
1107 static void handle_key(u8 code)
1108 {
1109 	const struct key_entry *key =
1110 		sparse_keymap_entry_from_scancode(wistron_idev->input, code);
1111 
1112 	if (key) {
1113 		switch (key->type) {
1114 		case KE_WIFI:
1115 			if (have_wifi) {
1116 				wifi_enabled = !wifi_enabled;
1117 				bios_set_state(WIFI, wifi_enabled);
1118 			}
1119 			break;
1120 
1121 		case KE_BLUETOOTH:
1122 			if (have_bluetooth) {
1123 				bluetooth_enabled = !bluetooth_enabled;
1124 				bios_set_state(BLUETOOTH, bluetooth_enabled);
1125 			}
1126 			break;
1127 
1128 		default:
1129 			sparse_keymap_report_entry(wistron_idev->input,
1130 						   key, 1, true);
1131 			break;
1132 		}
1133 		jiffies_last_press = jiffies;
1134 	} else
1135 		printk(KERN_NOTICE
1136 			"wistron_btns: Unknown key code %02X\n", code);
1137 }
1138 
1139 static void poll_bios(bool discard)
1140 {
1141 	u8 qlen;
1142 	u16 val;
1143 
1144 	for (;;) {
1145 		qlen = CMOS_READ(cmos_address);
1146 		if (qlen == 0)
1147 			break;
1148 		val = bios_pop_queue();
1149 		if (val != 0 && !discard)
1150 			handle_key((u8)val);
1151 	}
1152 }
1153 
1154 static void wistron_flush(struct input_polled_dev *dev)
1155 {
1156 	/* Flush stale event queue */
1157 	poll_bios(true);
1158 }
1159 
1160 static void wistron_poll(struct input_polled_dev *dev)
1161 {
1162 	poll_bios(false);
1163 
1164 	/* Increase poll frequency if user is currently pressing keys (< 2s ago) */
1165 	if (time_before(jiffies, jiffies_last_press + 2 * HZ))
1166 		dev->poll_interval = POLL_INTERVAL_BURST;
1167 	else
1168 		dev->poll_interval = POLL_INTERVAL_DEFAULT;
1169 }
1170 
1171 static int wistron_setup_keymap(struct input_dev *dev,
1172 					  struct key_entry *entry)
1173 {
1174 	switch (entry->type) {
1175 
1176 	/* if wifi or bluetooth are not available, create normal keys */
1177 	case KE_WIFI:
1178 		if (!have_wifi) {
1179 			entry->type = KE_KEY;
1180 			entry->keycode = KEY_WLAN;
1181 		}
1182 		break;
1183 
1184 	case KE_BLUETOOTH:
1185 		if (!have_bluetooth) {
1186 			entry->type = KE_KEY;
1187 			entry->keycode = KEY_BLUETOOTH;
1188 		}
1189 		break;
1190 
1191 	case KE_END:
1192 		if (entry->code & FE_UNTESTED)
1193 			printk(KERN_WARNING "Untested laptop multimedia keys, "
1194 				"please report success or failure to "
1195 				"eric.piel@tremplin-utc.net\n");
1196 		break;
1197 	}
1198 
1199 	return 0;
1200 }
1201 
1202 static int setup_input_dev(void)
1203 {
1204 	struct input_dev *input_dev;
1205 	int error;
1206 
1207 	wistron_idev = input_allocate_polled_device();
1208 	if (!wistron_idev)
1209 		return -ENOMEM;
1210 
1211 	wistron_idev->open = wistron_flush;
1212 	wistron_idev->poll = wistron_poll;
1213 	wistron_idev->poll_interval = POLL_INTERVAL_DEFAULT;
1214 
1215 	input_dev = wistron_idev->input;
1216 	input_dev->name = "Wistron laptop buttons";
1217 	input_dev->phys = "wistron/input0";
1218 	input_dev->id.bustype = BUS_HOST;
1219 	input_dev->dev.parent = &wistron_device->dev;
1220 
1221 	error = sparse_keymap_setup(input_dev, keymap, wistron_setup_keymap);
1222 	if (error)
1223 		goto err_free_dev;
1224 
1225 	error = input_register_polled_device(wistron_idev);
1226 	if (error)
1227 		goto err_free_keymap;
1228 
1229 	return 0;
1230 
1231  err_free_keymap:
1232 	sparse_keymap_free(input_dev);
1233  err_free_dev:
1234 	input_free_polled_device(wistron_idev);
1235 	return error;
1236 }
1237 
1238 /* Driver core */
1239 
1240 static int wistron_probe(struct platform_device *dev)
1241 {
1242 	int err;
1243 
1244 	bios_attach();
1245 	cmos_address = bios_get_cmos_address();
1246 
1247 	if (have_wifi) {
1248 		u16 wifi = bios_get_default_setting(WIFI);
1249 		if (wifi & 1)
1250 			wifi_enabled = wifi & 2;
1251 		else
1252 			have_wifi = 0;
1253 
1254 		if (have_wifi)
1255 			bios_set_state(WIFI, wifi_enabled);
1256 	}
1257 
1258 	if (have_bluetooth) {
1259 		u16 bt = bios_get_default_setting(BLUETOOTH);
1260 		if (bt & 1)
1261 			bluetooth_enabled = bt & 2;
1262 		else
1263 			have_bluetooth = false;
1264 
1265 		if (have_bluetooth)
1266 			bios_set_state(BLUETOOTH, bluetooth_enabled);
1267 	}
1268 
1269 	wistron_led_init(&dev->dev);
1270 
1271 	err = setup_input_dev();
1272 	if (err) {
1273 		bios_detach();
1274 		return err;
1275 	}
1276 
1277 	return 0;
1278 }
1279 
1280 static int wistron_remove(struct platform_device *dev)
1281 {
1282 	wistron_led_remove();
1283 	input_unregister_polled_device(wistron_idev);
1284 	sparse_keymap_free(wistron_idev->input);
1285 	input_free_polled_device(wistron_idev);
1286 	bios_detach();
1287 
1288 	return 0;
1289 }
1290 
1291 #ifdef CONFIG_PM
1292 static int wistron_suspend(struct device *dev)
1293 {
1294 	if (have_wifi)
1295 		bios_set_state(WIFI, 0);
1296 
1297 	if (have_bluetooth)
1298 		bios_set_state(BLUETOOTH, 0);
1299 
1300 	wistron_led_suspend();
1301 
1302 	return 0;
1303 }
1304 
1305 static int wistron_resume(struct device *dev)
1306 {
1307 	if (have_wifi)
1308 		bios_set_state(WIFI, wifi_enabled);
1309 
1310 	if (have_bluetooth)
1311 		bios_set_state(BLUETOOTH, bluetooth_enabled);
1312 
1313 	wistron_led_resume();
1314 
1315 	poll_bios(true);
1316 
1317 	return 0;
1318 }
1319 
1320 static const struct dev_pm_ops wistron_pm_ops = {
1321 	.suspend	= wistron_suspend,
1322 	.resume		= wistron_resume,
1323 	.poweroff	= wistron_suspend,
1324 	.restore	= wistron_resume,
1325 };
1326 #endif
1327 
1328 static struct platform_driver wistron_driver = {
1329 	.driver		= {
1330 		.name	= "wistron-bios",
1331 		.owner	= THIS_MODULE,
1332 #ifdef CONFIG_PM
1333 		.pm	= &wistron_pm_ops,
1334 #endif
1335 	},
1336 	.probe		= wistron_probe,
1337 	.remove		= wistron_remove,
1338 };
1339 
1340 static int __init wb_module_init(void)
1341 {
1342 	int err;
1343 
1344 	err = select_keymap();
1345 	if (err)
1346 		return err;
1347 
1348 	err = map_bios();
1349 	if (err)
1350 		goto err_free_keymap;
1351 
1352 	err = platform_driver_register(&wistron_driver);
1353 	if (err)
1354 		goto err_unmap_bios;
1355 
1356 	wistron_device = platform_device_alloc("wistron-bios", -1);
1357 	if (!wistron_device) {
1358 		err = -ENOMEM;
1359 		goto err_unregister_driver;
1360 	}
1361 
1362 	err = platform_device_add(wistron_device);
1363 	if (err)
1364 		goto err_free_device;
1365 
1366 	return 0;
1367 
1368  err_free_device:
1369 	platform_device_put(wistron_device);
1370  err_unregister_driver:
1371 	platform_driver_unregister(&wistron_driver);
1372  err_unmap_bios:
1373 	unmap_bios();
1374  err_free_keymap:
1375 	kfree(keymap);
1376 
1377 	return err;
1378 }
1379 
1380 static void __exit wb_module_exit(void)
1381 {
1382 	platform_device_unregister(wistron_device);
1383 	platform_driver_unregister(&wistron_driver);
1384 	unmap_bios();
1385 	kfree(keymap);
1386 }
1387 
1388 module_init(wb_module_init);
1389 module_exit(wb_module_exit);
1390