1 /*-*-linux-c-*-*/
2 
3 /*
4   Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
5 
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2 of the License, or
9   (at your option) any later version.
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
14   General Public License for more details.
15 
16   You should have received a copy of the GNU General Public License
17   along with this program; if not, write to the Free Software
18   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19   02110-1301, USA.
20  */
21 
22 /*
23  * msi-laptop.c - MSI S270 laptop support. This laptop is sold under
24  * various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
25  *
26  * Driver also supports S271, S420 models.
27  *
28  * This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
29  *
30  *   lcd_level - Screen brightness: contains a single integer in the
31  *   range 0..8. (rw)
32  *
33  *   auto_brightness - Enable automatic brightness control: contains
34  *   either 0 or 1. If set to 1 the hardware adjusts the screen
35  *   brightness automatically when the power cord is
36  *   plugged/unplugged. (rw)
37  *
38  *   wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
39  *
40  *   bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
41  *   Please note that this file is constantly 0 if no Bluetooth
42  *   hardware is available. (ro)
43  *
44  * In addition to these platform device attributes the driver
45  * registers itself in the Linux backlight control subsystem and is
46  * available to userspace under /sys/class/backlight/msi-laptop-bl/.
47  *
48  * This driver might work on other laptops produced by MSI. If you
49  * want to try it you can pass force=1 as argument to the module which
50  * will force it to load even when the DMI data doesn't identify the
51  * laptop as MSI S270. YMMV.
52  */
53 
54 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
55 
56 #include <linux/module.h>
57 #include <linux/kernel.h>
58 #include <linux/init.h>
59 #include <linux/acpi.h>
60 #include <linux/dmi.h>
61 #include <linux/backlight.h>
62 #include <linux/platform_device.h>
63 #include <linux/rfkill.h>
64 #include <linux/i8042.h>
65 #include <linux/input.h>
66 #include <linux/input/sparse-keymap.h>
67 #include <acpi/video.h>
68 
69 #define MSI_DRIVER_VERSION "0.5"
70 
71 #define MSI_LCD_LEVEL_MAX 9
72 
73 #define MSI_EC_COMMAND_WIRELESS 0x10
74 #define MSI_EC_COMMAND_LCD_LEVEL 0x11
75 
76 #define MSI_STANDARD_EC_COMMAND_ADDRESS	0x2e
77 #define MSI_STANDARD_EC_BLUETOOTH_MASK	(1 << 0)
78 #define MSI_STANDARD_EC_WEBCAM_MASK	(1 << 1)
79 #define MSI_STANDARD_EC_WLAN_MASK	(1 << 3)
80 #define MSI_STANDARD_EC_3G_MASK		(1 << 4)
81 
82 /* For set SCM load flag to disable BIOS fn key */
83 #define MSI_STANDARD_EC_SCM_LOAD_ADDRESS	0x2d
84 #define MSI_STANDARD_EC_SCM_LOAD_MASK		(1 << 0)
85 
86 #define MSI_STANDARD_EC_FUNCTIONS_ADDRESS	0xe4
87 /* Power LED is orange - Turbo mode */
88 #define MSI_STANDARD_EC_TURBO_MASK		(1 << 1)
89 /* Power LED is green - ECO mode */
90 #define MSI_STANDARD_EC_ECO_MASK		(1 << 3)
91 /* Touchpad is turned on */
92 #define MSI_STANDARD_EC_TOUCHPAD_MASK		(1 << 4)
93 /* If this bit != bit 1, turbo mode can't be toggled */
94 #define MSI_STANDARD_EC_TURBO_COOLDOWN_MASK	(1 << 7)
95 
96 #define MSI_STANDARD_EC_FAN_ADDRESS		0x33
97 /* If zero, fan rotates at maximal speed */
98 #define MSI_STANDARD_EC_AUTOFAN_MASK		(1 << 0)
99 
100 #ifdef CONFIG_PM_SLEEP
101 static int msi_laptop_resume(struct device *device);
102 #endif
103 static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);
104 
105 #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS	0x2f
106 
107 static bool force;
108 module_param(force, bool, 0);
109 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
110 
111 static int auto_brightness;
112 module_param(auto_brightness, int, 0);
113 MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
114 
115 static const struct key_entry msi_laptop_keymap[] = {
116 	{KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },	/* Touch Pad On */
117 	{KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
118 	{KE_END, 0}
119 };
120 
121 static struct input_dev *msi_laptop_input_dev;
122 
123 static int wlan_s, bluetooth_s, threeg_s;
124 static int threeg_exists;
125 static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
126 
127 /* MSI laptop quirks */
128 struct quirk_entry {
129 	bool old_ec_model;
130 
131 	/* Some MSI 3G netbook only have one fn key to control
132 	 * Wlan/Bluetooth/3G, those netbook will load the SCM (windows app) to
133 	 * disable the original Wlan/Bluetooth control by BIOS when user press
134 	 * fn key, then control Wlan/Bluetooth/3G by SCM (software control by
135 	 * OS). Without SCM, user cann't on/off 3G module on those 3G netbook.
136 	 * On Linux, msi-laptop driver will do the same thing to disable the
137 	 * original BIOS control, then might need use HAL or other userland
138 	 * application to do the software control that simulate with SCM.
139 	 * e.g. MSI N034 netbook
140 	 */
141 	bool load_scm_model;
142 
143 	/* Some MSI laptops need delay before reading from EC */
144 	bool ec_delay;
145 
146 	/* Some MSI Wind netbooks (e.g. MSI Wind U100) need loading SCM to get
147 	 * some features working (e.g. ECO mode), but we cannot change
148 	 * Wlan/Bluetooth state in software and we can only read its state.
149 	 */
150 	bool ec_read_only;
151 };
152 
153 static struct quirk_entry *quirks;
154 
155 /* Hardware access */
156 
157 static int set_lcd_level(int level)
158 {
159 	u8 buf[2];
160 
161 	if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
162 		return -EINVAL;
163 
164 	buf[0] = 0x80;
165 	buf[1] = (u8) (level*31);
166 
167 	return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
168 			      NULL, 0);
169 }
170 
171 static int get_lcd_level(void)
172 {
173 	u8 wdata = 0, rdata;
174 	int result;
175 
176 	result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
177 				&rdata, 1);
178 	if (result < 0)
179 		return result;
180 
181 	return (int) rdata / 31;
182 }
183 
184 static int get_auto_brightness(void)
185 {
186 	u8 wdata = 4, rdata;
187 	int result;
188 
189 	result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
190 				&rdata, 1);
191 	if (result < 0)
192 		return result;
193 
194 	return !!(rdata & 8);
195 }
196 
197 static int set_auto_brightness(int enable)
198 {
199 	u8 wdata[2], rdata;
200 	int result;
201 
202 	wdata[0] = 4;
203 
204 	result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
205 				&rdata, 1);
206 	if (result < 0)
207 		return result;
208 
209 	wdata[0] = 0x84;
210 	wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
211 
212 	return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
213 			      NULL, 0);
214 }
215 
216 static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
217 {
218 	int status;
219 	u8 wdata = 0, rdata;
220 	int result;
221 
222 	if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
223 		return -EINVAL;
224 
225 	if (quirks->ec_read_only)
226 		return -EOPNOTSUPP;
227 
228 	/* read current device state */
229 	result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
230 	if (result < 0)
231 		return result;
232 
233 	if (!!(rdata & mask) != status) {
234 		/* reverse device bit */
235 		if (rdata & mask)
236 			wdata = rdata & ~mask;
237 		else
238 			wdata = rdata | mask;
239 
240 		result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
241 		if (result < 0)
242 			return result;
243 	}
244 
245 	return count;
246 }
247 
248 static int get_wireless_state(int *wlan, int *bluetooth)
249 {
250 	u8 wdata = 0, rdata;
251 	int result;
252 
253 	result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
254 	if (result < 0)
255 		return result;
256 
257 	if (wlan)
258 		*wlan = !!(rdata & 8);
259 
260 	if (bluetooth)
261 		*bluetooth = !!(rdata & 128);
262 
263 	return 0;
264 }
265 
266 static int get_wireless_state_ec_standard(void)
267 {
268 	u8 rdata;
269 	int result;
270 
271 	result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
272 	if (result < 0)
273 		return result;
274 
275 	wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
276 
277 	bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
278 
279 	threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
280 
281 	return 0;
282 }
283 
284 static int get_threeg_exists(void)
285 {
286 	u8 rdata;
287 	int result;
288 
289 	result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
290 	if (result < 0)
291 		return result;
292 
293 	threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
294 
295 	return 0;
296 }
297 
298 /* Backlight device stuff */
299 
300 static int bl_get_brightness(struct backlight_device *b)
301 {
302 	return get_lcd_level();
303 }
304 
305 
306 static int bl_update_status(struct backlight_device *b)
307 {
308 	return set_lcd_level(b->props.brightness);
309 }
310 
311 static const struct backlight_ops msibl_ops = {
312 	.get_brightness = bl_get_brightness,
313 	.update_status  = bl_update_status,
314 };
315 
316 static struct backlight_device *msibl_device;
317 
318 /* Platform device */
319 
320 static ssize_t show_wlan(struct device *dev,
321 	struct device_attribute *attr, char *buf)
322 {
323 
324 	int ret, enabled = 0;
325 
326 	if (quirks->old_ec_model) {
327 		ret = get_wireless_state(&enabled, NULL);
328 	} else {
329 		ret = get_wireless_state_ec_standard();
330 		enabled = wlan_s;
331 	}
332 	if (ret < 0)
333 		return ret;
334 
335 	return sprintf(buf, "%i\n", enabled);
336 }
337 
338 static ssize_t store_wlan(struct device *dev,
339 	struct device_attribute *attr, const char *buf, size_t count)
340 {
341 	return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
342 }
343 
344 static ssize_t show_bluetooth(struct device *dev,
345 	struct device_attribute *attr, char *buf)
346 {
347 
348 	int ret, enabled = 0;
349 
350 	if (quirks->old_ec_model) {
351 		ret = get_wireless_state(NULL, &enabled);
352 	} else {
353 		ret = get_wireless_state_ec_standard();
354 		enabled = bluetooth_s;
355 	}
356 	if (ret < 0)
357 		return ret;
358 
359 	return sprintf(buf, "%i\n", enabled);
360 }
361 
362 static ssize_t store_bluetooth(struct device *dev,
363 	struct device_attribute *attr, const char *buf, size_t count)
364 {
365 	return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
366 }
367 
368 static ssize_t show_threeg(struct device *dev,
369 	struct device_attribute *attr, char *buf)
370 {
371 
372 	int ret;
373 
374 	/* old msi ec not support 3G */
375 	if (quirks->old_ec_model)
376 		return -ENODEV;
377 
378 	ret = get_wireless_state_ec_standard();
379 	if (ret < 0)
380 		return ret;
381 
382 	return sprintf(buf, "%i\n", threeg_s);
383 }
384 
385 static ssize_t store_threeg(struct device *dev,
386 	struct device_attribute *attr, const char *buf, size_t count)
387 {
388 	return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
389 }
390 
391 static ssize_t show_lcd_level(struct device *dev,
392 	struct device_attribute *attr, char *buf)
393 {
394 
395 	int ret;
396 
397 	ret = get_lcd_level();
398 	if (ret < 0)
399 		return ret;
400 
401 	return sprintf(buf, "%i\n", ret);
402 }
403 
404 static ssize_t store_lcd_level(struct device *dev,
405 	struct device_attribute *attr, const char *buf, size_t count)
406 {
407 
408 	int level, ret;
409 
410 	if (sscanf(buf, "%i", &level) != 1 ||
411 	    (level < 0 || level >= MSI_LCD_LEVEL_MAX))
412 		return -EINVAL;
413 
414 	ret = set_lcd_level(level);
415 	if (ret < 0)
416 		return ret;
417 
418 	return count;
419 }
420 
421 static ssize_t show_auto_brightness(struct device *dev,
422 	struct device_attribute *attr, char *buf)
423 {
424 
425 	int ret;
426 
427 	ret = get_auto_brightness();
428 	if (ret < 0)
429 		return ret;
430 
431 	return sprintf(buf, "%i\n", ret);
432 }
433 
434 static ssize_t store_auto_brightness(struct device *dev,
435 	struct device_attribute *attr, const char *buf, size_t count)
436 {
437 
438 	int enable, ret;
439 
440 	if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
441 		return -EINVAL;
442 
443 	ret = set_auto_brightness(enable);
444 	if (ret < 0)
445 		return ret;
446 
447 	return count;
448 }
449 
450 static ssize_t show_touchpad(struct device *dev,
451 	struct device_attribute *attr, char *buf)
452 {
453 
454 	u8 rdata;
455 	int result;
456 
457 	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
458 	if (result < 0)
459 		return result;
460 
461 	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
462 }
463 
464 static ssize_t show_turbo(struct device *dev,
465 	struct device_attribute *attr, char *buf)
466 {
467 
468 	u8 rdata;
469 	int result;
470 
471 	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
472 	if (result < 0)
473 		return result;
474 
475 	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
476 }
477 
478 static ssize_t show_eco(struct device *dev,
479 	struct device_attribute *attr, char *buf)
480 {
481 
482 	u8 rdata;
483 	int result;
484 
485 	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
486 	if (result < 0)
487 		return result;
488 
489 	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
490 }
491 
492 static ssize_t show_turbo_cooldown(struct device *dev,
493 	struct device_attribute *attr, char *buf)
494 {
495 
496 	u8 rdata;
497 	int result;
498 
499 	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
500 	if (result < 0)
501 		return result;
502 
503 	return sprintf(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
504 		(!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
505 }
506 
507 static ssize_t show_auto_fan(struct device *dev,
508 	struct device_attribute *attr, char *buf)
509 {
510 
511 	u8 rdata;
512 	int result;
513 
514 	result = ec_read(MSI_STANDARD_EC_FAN_ADDRESS, &rdata);
515 	if (result < 0)
516 		return result;
517 
518 	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
519 }
520 
521 static ssize_t store_auto_fan(struct device *dev,
522 	struct device_attribute *attr, const char *buf, size_t count)
523 {
524 
525 	int enable, result;
526 
527 	if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
528 		return -EINVAL;
529 
530 	result = ec_write(MSI_STANDARD_EC_FAN_ADDRESS, enable);
531 	if (result < 0)
532 		return result;
533 
534 	return count;
535 }
536 
537 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
538 static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
539 		   store_auto_brightness);
540 static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
541 static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
542 static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
543 static DEVICE_ATTR(touchpad, 0444, show_touchpad, NULL);
544 static DEVICE_ATTR(turbo_mode, 0444, show_turbo, NULL);
545 static DEVICE_ATTR(eco_mode, 0444, show_eco, NULL);
546 static DEVICE_ATTR(turbo_cooldown, 0444, show_turbo_cooldown, NULL);
547 static DEVICE_ATTR(auto_fan, 0644, show_auto_fan, store_auto_fan);
548 
549 static struct attribute *msipf_attributes[] = {
550 	&dev_attr_bluetooth.attr,
551 	&dev_attr_wlan.attr,
552 	&dev_attr_touchpad.attr,
553 	&dev_attr_turbo_mode.attr,
554 	&dev_attr_eco_mode.attr,
555 	&dev_attr_turbo_cooldown.attr,
556 	&dev_attr_auto_fan.attr,
557 	NULL
558 };
559 
560 static struct attribute *msipf_old_attributes[] = {
561 	&dev_attr_lcd_level.attr,
562 	&dev_attr_auto_brightness.attr,
563 	NULL
564 };
565 
566 static const struct attribute_group msipf_attribute_group = {
567 	.attrs = msipf_attributes
568 };
569 
570 static const struct attribute_group msipf_old_attribute_group = {
571 	.attrs = msipf_old_attributes
572 };
573 
574 static struct platform_driver msipf_driver = {
575 	.driver = {
576 		.name = "msi-laptop-pf",
577 		.pm = &msi_laptop_pm,
578 	},
579 };
580 
581 static struct platform_device *msipf_device;
582 
583 /* Initialization */
584 
585 static struct quirk_entry quirk_old_ec_model = {
586 	.old_ec_model = true,
587 };
588 
589 static struct quirk_entry quirk_load_scm_model = {
590 	.load_scm_model = true,
591 	.ec_delay = true,
592 };
593 
594 static struct quirk_entry quirk_load_scm_ro_model = {
595 	.load_scm_model = true,
596 	.ec_read_only = true,
597 };
598 
599 static int dmi_check_cb(const struct dmi_system_id *dmi)
600 {
601 	pr_info("Identified laptop model '%s'\n", dmi->ident);
602 
603 	quirks = dmi->driver_data;
604 
605 	return 1;
606 }
607 
608 static const struct dmi_system_id msi_dmi_table[] __initconst = {
609 	{
610 		.ident = "MSI S270",
611 		.matches = {
612 			DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
613 			DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
614 			DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
615 			DMI_MATCH(DMI_CHASSIS_VENDOR,
616 				  "MICRO-STAR INT'L CO.,LTD")
617 		},
618 		.driver_data = &quirk_old_ec_model,
619 		.callback = dmi_check_cb
620 	},
621 	{
622 		.ident = "MSI S271",
623 		.matches = {
624 			DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
625 			DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
626 			DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
627 			DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
628 		},
629 		.driver_data = &quirk_old_ec_model,
630 		.callback = dmi_check_cb
631 	},
632 	{
633 		.ident = "MSI S420",
634 		.matches = {
635 			DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
636 			DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
637 			DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
638 			DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
639 		},
640 		.driver_data = &quirk_old_ec_model,
641 		.callback = dmi_check_cb
642 	},
643 	{
644 		.ident = "Medion MD96100",
645 		.matches = {
646 			DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
647 			DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
648 			DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
649 			DMI_MATCH(DMI_CHASSIS_VENDOR,
650 				  "MICRO-STAR INT'L CO.,LTD")
651 		},
652 		.driver_data = &quirk_old_ec_model,
653 		.callback = dmi_check_cb
654 	},
655 	{
656 		.ident = "MSI N034",
657 		.matches = {
658 			DMI_MATCH(DMI_SYS_VENDOR,
659 				"MICRO-STAR INTERNATIONAL CO., LTD"),
660 			DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
661 			DMI_MATCH(DMI_CHASSIS_VENDOR,
662 			"MICRO-STAR INTERNATIONAL CO., LTD")
663 		},
664 		.driver_data = &quirk_load_scm_model,
665 		.callback = dmi_check_cb
666 	},
667 	{
668 		.ident = "MSI N051",
669 		.matches = {
670 			DMI_MATCH(DMI_SYS_VENDOR,
671 				"MICRO-STAR INTERNATIONAL CO., LTD"),
672 			DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
673 			DMI_MATCH(DMI_CHASSIS_VENDOR,
674 			"MICRO-STAR INTERNATIONAL CO., LTD")
675 		},
676 		.driver_data = &quirk_load_scm_model,
677 		.callback = dmi_check_cb
678 	},
679 	{
680 		.ident = "MSI N014",
681 		.matches = {
682 			DMI_MATCH(DMI_SYS_VENDOR,
683 				"MICRO-STAR INTERNATIONAL CO., LTD"),
684 			DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
685 		},
686 		.driver_data = &quirk_load_scm_model,
687 		.callback = dmi_check_cb
688 	},
689 	{
690 		.ident = "MSI CR620",
691 		.matches = {
692 			DMI_MATCH(DMI_SYS_VENDOR,
693 				"Micro-Star International"),
694 			DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
695 		},
696 		.driver_data = &quirk_load_scm_model,
697 		.callback = dmi_check_cb
698 	},
699 	{
700 		.ident = "MSI U270",
701 		.matches = {
702 			DMI_MATCH(DMI_SYS_VENDOR,
703 				"Micro-Star International Co., Ltd."),
704 			DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
705 		},
706 		.driver_data = &quirk_load_scm_model,
707 		.callback = dmi_check_cb
708 	},
709 	{
710 		.ident = "MSI U90/U100",
711 		.matches = {
712 			DMI_MATCH(DMI_SYS_VENDOR,
713 				"MICRO-STAR INTERNATIONAL CO., LTD"),
714 			DMI_MATCH(DMI_PRODUCT_NAME, "U90/U100"),
715 		},
716 		.driver_data = &quirk_load_scm_ro_model,
717 		.callback = dmi_check_cb
718 	},
719 	{ }
720 };
721 
722 static int rfkill_bluetooth_set(void *data, bool blocked)
723 {
724 	/* Do something with blocked...*/
725 	/*
726 	 * blocked == false is on
727 	 * blocked == true is off
728 	 */
729 	int result = set_device_state(blocked ? "0" : "1", 0,
730 			MSI_STANDARD_EC_BLUETOOTH_MASK);
731 
732 	return min(result, 0);
733 }
734 
735 static int rfkill_wlan_set(void *data, bool blocked)
736 {
737 	int result = set_device_state(blocked ? "0" : "1", 0,
738 			MSI_STANDARD_EC_WLAN_MASK);
739 
740 	return min(result, 0);
741 }
742 
743 static int rfkill_threeg_set(void *data, bool blocked)
744 {
745 	int result = set_device_state(blocked ? "0" : "1", 0,
746 			MSI_STANDARD_EC_3G_MASK);
747 
748 	return min(result, 0);
749 }
750 
751 static const struct rfkill_ops rfkill_bluetooth_ops = {
752 	.set_block = rfkill_bluetooth_set
753 };
754 
755 static const struct rfkill_ops rfkill_wlan_ops = {
756 	.set_block = rfkill_wlan_set
757 };
758 
759 static const struct rfkill_ops rfkill_threeg_ops = {
760 	.set_block = rfkill_threeg_set
761 };
762 
763 static void rfkill_cleanup(void)
764 {
765 	if (rfk_bluetooth) {
766 		rfkill_unregister(rfk_bluetooth);
767 		rfkill_destroy(rfk_bluetooth);
768 	}
769 
770 	if (rfk_threeg) {
771 		rfkill_unregister(rfk_threeg);
772 		rfkill_destroy(rfk_threeg);
773 	}
774 
775 	if (rfk_wlan) {
776 		rfkill_unregister(rfk_wlan);
777 		rfkill_destroy(rfk_wlan);
778 	}
779 }
780 
781 static bool msi_rfkill_set_state(struct rfkill *rfkill, bool blocked)
782 {
783 	if (quirks->ec_read_only)
784 		return rfkill_set_hw_state(rfkill, blocked);
785 	else
786 		return rfkill_set_sw_state(rfkill, blocked);
787 }
788 
789 static void msi_update_rfkill(struct work_struct *ignored)
790 {
791 	get_wireless_state_ec_standard();
792 
793 	if (rfk_wlan)
794 		msi_rfkill_set_state(rfk_wlan, !wlan_s);
795 	if (rfk_bluetooth)
796 		msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
797 	if (rfk_threeg)
798 		msi_rfkill_set_state(rfk_threeg, !threeg_s);
799 }
800 static DECLARE_DELAYED_WORK(msi_rfkill_dwork, msi_update_rfkill);
801 static DECLARE_WORK(msi_rfkill_work, msi_update_rfkill);
802 
803 static void msi_send_touchpad_key(struct work_struct *ignored)
804 {
805 	u8 rdata;
806 	int result;
807 
808 	result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
809 	if (result < 0)
810 		return;
811 
812 	sparse_keymap_report_event(msi_laptop_input_dev,
813 		(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
814 		KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
815 }
816 static DECLARE_DELAYED_WORK(msi_touchpad_dwork, msi_send_touchpad_key);
817 static DECLARE_WORK(msi_touchpad_work, msi_send_touchpad_key);
818 
819 static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
820 				struct serio *port)
821 {
822 	static bool extended;
823 
824 	if (str & I8042_STR_AUXDATA)
825 		return false;
826 
827 	/* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
828 	if (unlikely(data == 0xe0)) {
829 		extended = true;
830 		return false;
831 	} else if (unlikely(extended)) {
832 		extended = false;
833 		switch (data) {
834 		case 0xE4:
835 			if (quirks->ec_delay) {
836 				schedule_delayed_work(&msi_touchpad_dwork,
837 					round_jiffies_relative(0.5 * HZ));
838 			} else
839 				schedule_work(&msi_touchpad_work);
840 			break;
841 		case 0x54:
842 		case 0x62:
843 		case 0x76:
844 			if (quirks->ec_delay) {
845 				schedule_delayed_work(&msi_rfkill_dwork,
846 					round_jiffies_relative(0.5 * HZ));
847 			} else
848 				schedule_work(&msi_rfkill_work);
849 			break;
850 		}
851 	}
852 
853 	return false;
854 }
855 
856 static void msi_init_rfkill(struct work_struct *ignored)
857 {
858 	if (rfk_wlan) {
859 		rfkill_set_sw_state(rfk_wlan, !wlan_s);
860 		rfkill_wlan_set(NULL, !wlan_s);
861 	}
862 	if (rfk_bluetooth) {
863 		rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
864 		rfkill_bluetooth_set(NULL, !bluetooth_s);
865 	}
866 	if (rfk_threeg) {
867 		rfkill_set_sw_state(rfk_threeg, !threeg_s);
868 		rfkill_threeg_set(NULL, !threeg_s);
869 	}
870 }
871 static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
872 
873 static int rfkill_init(struct platform_device *sdev)
874 {
875 	/* add rfkill */
876 	int retval;
877 
878 	/* keep the hardware wireless state */
879 	get_wireless_state_ec_standard();
880 
881 	rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
882 				RFKILL_TYPE_BLUETOOTH,
883 				&rfkill_bluetooth_ops, NULL);
884 	if (!rfk_bluetooth) {
885 		retval = -ENOMEM;
886 		goto err_bluetooth;
887 	}
888 	retval = rfkill_register(rfk_bluetooth);
889 	if (retval)
890 		goto err_bluetooth;
891 
892 	rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
893 				&rfkill_wlan_ops, NULL);
894 	if (!rfk_wlan) {
895 		retval = -ENOMEM;
896 		goto err_wlan;
897 	}
898 	retval = rfkill_register(rfk_wlan);
899 	if (retval)
900 		goto err_wlan;
901 
902 	if (threeg_exists) {
903 		rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
904 				RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
905 		if (!rfk_threeg) {
906 			retval = -ENOMEM;
907 			goto err_threeg;
908 		}
909 		retval = rfkill_register(rfk_threeg);
910 		if (retval)
911 			goto err_threeg;
912 	}
913 
914 	/* schedule to run rfkill state initial */
915 	if (quirks->ec_delay) {
916 		schedule_delayed_work(&msi_rfkill_init,
917 			round_jiffies_relative(1 * HZ));
918 	} else
919 		schedule_work(&msi_rfkill_work);
920 
921 	return 0;
922 
923 err_threeg:
924 	rfkill_destroy(rfk_threeg);
925 	if (rfk_wlan)
926 		rfkill_unregister(rfk_wlan);
927 err_wlan:
928 	rfkill_destroy(rfk_wlan);
929 	if (rfk_bluetooth)
930 		rfkill_unregister(rfk_bluetooth);
931 err_bluetooth:
932 	rfkill_destroy(rfk_bluetooth);
933 
934 	return retval;
935 }
936 
937 #ifdef CONFIG_PM_SLEEP
938 static int msi_laptop_resume(struct device *device)
939 {
940 	u8 data;
941 	int result;
942 
943 	if (!quirks->load_scm_model)
944 		return 0;
945 
946 	/* set load SCM to disable hardware control by fn key */
947 	result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
948 	if (result < 0)
949 		return result;
950 
951 	result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
952 		data | MSI_STANDARD_EC_SCM_LOAD_MASK);
953 	if (result < 0)
954 		return result;
955 
956 	return 0;
957 }
958 #endif
959 
960 static int __init msi_laptop_input_setup(void)
961 {
962 	int err;
963 
964 	msi_laptop_input_dev = input_allocate_device();
965 	if (!msi_laptop_input_dev)
966 		return -ENOMEM;
967 
968 	msi_laptop_input_dev->name = "MSI Laptop hotkeys";
969 	msi_laptop_input_dev->phys = "msi-laptop/input0";
970 	msi_laptop_input_dev->id.bustype = BUS_HOST;
971 
972 	err = sparse_keymap_setup(msi_laptop_input_dev,
973 		msi_laptop_keymap, NULL);
974 	if (err)
975 		goto err_free_dev;
976 
977 	err = input_register_device(msi_laptop_input_dev);
978 	if (err)
979 		goto err_free_dev;
980 
981 	return 0;
982 
983 err_free_dev:
984 	input_free_device(msi_laptop_input_dev);
985 	return err;
986 }
987 
988 static int __init load_scm_model_init(struct platform_device *sdev)
989 {
990 	u8 data;
991 	int result;
992 
993 	if (!quirks->ec_read_only) {
994 		/* allow userland write sysfs file  */
995 		dev_attr_bluetooth.store = store_bluetooth;
996 		dev_attr_wlan.store = store_wlan;
997 		dev_attr_threeg.store = store_threeg;
998 		dev_attr_bluetooth.attr.mode |= S_IWUSR;
999 		dev_attr_wlan.attr.mode |= S_IWUSR;
1000 		dev_attr_threeg.attr.mode |= S_IWUSR;
1001 	}
1002 
1003 	/* disable hardware control by fn key */
1004 	result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
1005 	if (result < 0)
1006 		return result;
1007 
1008 	result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
1009 		data | MSI_STANDARD_EC_SCM_LOAD_MASK);
1010 	if (result < 0)
1011 		return result;
1012 
1013 	/* initial rfkill */
1014 	result = rfkill_init(sdev);
1015 	if (result < 0)
1016 		goto fail_rfkill;
1017 
1018 	/* setup input device */
1019 	result = msi_laptop_input_setup();
1020 	if (result)
1021 		goto fail_input;
1022 
1023 	result = i8042_install_filter(msi_laptop_i8042_filter);
1024 	if (result) {
1025 		pr_err("Unable to install key filter\n");
1026 		goto fail_filter;
1027 	}
1028 
1029 	return 0;
1030 
1031 fail_filter:
1032 	input_unregister_device(msi_laptop_input_dev);
1033 
1034 fail_input:
1035 	rfkill_cleanup();
1036 
1037 fail_rfkill:
1038 
1039 	return result;
1040 
1041 }
1042 
1043 static int __init msi_init(void)
1044 {
1045 	int ret;
1046 
1047 	if (acpi_disabled)
1048 		return -ENODEV;
1049 
1050 	dmi_check_system(msi_dmi_table);
1051 	if (!quirks)
1052 		/* quirks may be NULL if no match in DMI table */
1053 		quirks = &quirk_load_scm_model;
1054 	if (force)
1055 		quirks = &quirk_old_ec_model;
1056 
1057 	if (!quirks->old_ec_model)
1058 		get_threeg_exists();
1059 
1060 	if (auto_brightness < 0 || auto_brightness > 2)
1061 		return -EINVAL;
1062 
1063 	/* Register backlight stuff */
1064 
1065 	if (quirks->old_ec_model ||
1066 	    acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1067 		struct backlight_properties props;
1068 		memset(&props, 0, sizeof(struct backlight_properties));
1069 		props.type = BACKLIGHT_PLATFORM;
1070 		props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
1071 		msibl_device = backlight_device_register("msi-laptop-bl", NULL,
1072 							 NULL, &msibl_ops,
1073 							 &props);
1074 		if (IS_ERR(msibl_device))
1075 			return PTR_ERR(msibl_device);
1076 	}
1077 
1078 	ret = platform_driver_register(&msipf_driver);
1079 	if (ret)
1080 		goto fail_backlight;
1081 
1082 	/* Register platform stuff */
1083 
1084 	msipf_device = platform_device_alloc("msi-laptop-pf", -1);
1085 	if (!msipf_device) {
1086 		ret = -ENOMEM;
1087 		goto fail_platform_driver;
1088 	}
1089 
1090 	ret = platform_device_add(msipf_device);
1091 	if (ret)
1092 		goto fail_device_add;
1093 
1094 	if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
1095 		ret = -EINVAL;
1096 		goto fail_scm_model_init;
1097 	}
1098 
1099 	ret = sysfs_create_group(&msipf_device->dev.kobj,
1100 				 &msipf_attribute_group);
1101 	if (ret)
1102 		goto fail_create_group;
1103 
1104 	if (!quirks->old_ec_model) {
1105 		if (threeg_exists)
1106 			ret = device_create_file(&msipf_device->dev,
1107 						&dev_attr_threeg);
1108 		if (ret)
1109 			goto fail_create_attr;
1110 	} else {
1111 		ret = sysfs_create_group(&msipf_device->dev.kobj,
1112 					 &msipf_old_attribute_group);
1113 		if (ret)
1114 			goto fail_create_attr;
1115 
1116 		/* Disable automatic brightness control by default because
1117 		 * this module was probably loaded to do brightness control in
1118 		 * software. */
1119 
1120 		if (auto_brightness != 2)
1121 			set_auto_brightness(auto_brightness);
1122 	}
1123 
1124 	pr_info("driver " MSI_DRIVER_VERSION " successfully loaded\n");
1125 
1126 	return 0;
1127 
1128 fail_create_attr:
1129 	sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1130 fail_create_group:
1131 	if (quirks->load_scm_model) {
1132 		i8042_remove_filter(msi_laptop_i8042_filter);
1133 		cancel_delayed_work_sync(&msi_rfkill_dwork);
1134 		cancel_work_sync(&msi_rfkill_work);
1135 		rfkill_cleanup();
1136 	}
1137 fail_scm_model_init:
1138 	platform_device_del(msipf_device);
1139 fail_device_add:
1140 	platform_device_put(msipf_device);
1141 fail_platform_driver:
1142 	platform_driver_unregister(&msipf_driver);
1143 fail_backlight:
1144 	backlight_device_unregister(msibl_device);
1145 
1146 	return ret;
1147 }
1148 
1149 static void __exit msi_cleanup(void)
1150 {
1151 	if (quirks->load_scm_model) {
1152 		i8042_remove_filter(msi_laptop_i8042_filter);
1153 		input_unregister_device(msi_laptop_input_dev);
1154 		cancel_delayed_work_sync(&msi_rfkill_dwork);
1155 		cancel_work_sync(&msi_rfkill_work);
1156 		rfkill_cleanup();
1157 	}
1158 
1159 	sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1160 	if (!quirks->old_ec_model && threeg_exists)
1161 		device_remove_file(&msipf_device->dev, &dev_attr_threeg);
1162 	platform_device_unregister(msipf_device);
1163 	platform_driver_unregister(&msipf_driver);
1164 	backlight_device_unregister(msibl_device);
1165 
1166 	if (quirks->old_ec_model) {
1167 		/* Enable automatic brightness control again */
1168 		if (auto_brightness != 2)
1169 			set_auto_brightness(1);
1170 	}
1171 
1172 	pr_info("driver unloaded\n");
1173 }
1174 
1175 module_init(msi_init);
1176 module_exit(msi_cleanup);
1177 
1178 MODULE_AUTHOR("Lennart Poettering");
1179 MODULE_DESCRIPTION("MSI Laptop Support");
1180 MODULE_VERSION(MSI_DRIVER_VERSION);
1181 MODULE_LICENSE("GPL");
1182 
1183 MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1184 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
1185 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1186 MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1187 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N034:*");
1188 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N051:*");
1189 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N014:*");
1190 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnCR620:*");
1191 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnU270series:*");
1192 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnU90/U100:*");
1193