1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*-*-linux-c-*-*/
3
4 /*
5 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
6
7 */
8
9 /*
10 * msi-laptop.c - MSI S270 laptop support. This laptop is sold under
11 * various brands, including "Cytron/TCM/Medion/Tchibo MD96100".
12 *
13 * Driver also supports S271, S420 models.
14 *
15 * This driver exports a few files in /sys/devices/platform/msi-laptop-pf/:
16 *
17 * lcd_level - Screen brightness: contains a single integer in the
18 * range 0..8. (rw)
19 *
20 * auto_brightness - Enable automatic brightness control: contains
21 * either 0 or 1. If set to 1 the hardware adjusts the screen
22 * brightness automatically when the power cord is
23 * plugged/unplugged. (rw)
24 *
25 * wlan - WLAN subsystem enabled: contains either 0 or 1. (ro)
26 *
27 * bluetooth - Bluetooth subsystem enabled: contains either 0 or 1
28 * Please note that this file is constantly 0 if no Bluetooth
29 * hardware is available. (ro)
30 *
31 * In addition to these platform device attributes the driver
32 * registers itself in the Linux backlight control subsystem and is
33 * available to userspace under /sys/class/backlight/msi-laptop-bl/.
34 *
35 * This driver might work on other laptops produced by MSI. If you
36 * want to try it you can pass force=1 as argument to the module which
37 * will force it to load even when the DMI data doesn't identify the
38 * laptop as MSI S270. YMMV.
39 */
40
41 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
42
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/init.h>
46 #include <linux/acpi.h>
47 #include <linux/dmi.h>
48 #include <linux/backlight.h>
49 #include <linux/platform_device.h>
50 #include <linux/rfkill.h>
51 #include <linux/i8042.h>
52 #include <linux/input.h>
53 #include <linux/input/sparse-keymap.h>
54 #include <acpi/video.h>
55
56 #define MSI_LCD_LEVEL_MAX 9
57
58 #define MSI_EC_COMMAND_WIRELESS 0x10
59 #define MSI_EC_COMMAND_LCD_LEVEL 0x11
60
61 #define MSI_STANDARD_EC_COMMAND_ADDRESS 0x2e
62 #define MSI_STANDARD_EC_BLUETOOTH_MASK (1 << 0)
63 #define MSI_STANDARD_EC_WEBCAM_MASK (1 << 1)
64 #define MSI_STANDARD_EC_WLAN_MASK (1 << 3)
65 #define MSI_STANDARD_EC_3G_MASK (1 << 4)
66
67 /* For set SCM load flag to disable BIOS fn key */
68 #define MSI_STANDARD_EC_SCM_LOAD_ADDRESS 0x2d
69 #define MSI_STANDARD_EC_SCM_LOAD_MASK (1 << 0)
70
71 #define MSI_STANDARD_EC_FUNCTIONS_ADDRESS 0xe4
72 /* Power LED is orange - Turbo mode */
73 #define MSI_STANDARD_EC_TURBO_MASK (1 << 1)
74 /* Power LED is green - ECO mode */
75 #define MSI_STANDARD_EC_ECO_MASK (1 << 3)
76 /* Touchpad is turned on */
77 #define MSI_STANDARD_EC_TOUCHPAD_MASK (1 << 4)
78 /* If this bit != bit 1, turbo mode can't be toggled */
79 #define MSI_STANDARD_EC_TURBO_COOLDOWN_MASK (1 << 7)
80
81 #define MSI_STANDARD_EC_FAN_ADDRESS 0x33
82 /* If zero, fan rotates at maximal speed */
83 #define MSI_STANDARD_EC_AUTOFAN_MASK (1 << 0)
84
85 #ifdef CONFIG_PM_SLEEP
86 static int msi_laptop_resume(struct device *device);
87 #endif
88 static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);
89
90 #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS 0x2f
91
92 static bool force;
93 module_param(force, bool, 0);
94 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
95
96 static int auto_brightness;
97 module_param(auto_brightness, int, 0);
98 MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
99
100 static const struct key_entry msi_laptop_keymap[] = {
101 {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} }, /* Touch Pad On */
102 {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
103 {KE_END, 0}
104 };
105
106 static struct input_dev *msi_laptop_input_dev;
107
108 static int wlan_s, bluetooth_s, threeg_s;
109 static int threeg_exists;
110 static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
111
112 /* MSI laptop quirks */
113 struct quirk_entry {
114 bool old_ec_model;
115
116 /* Some MSI 3G netbook only have one fn key to control
117 * Wlan/Bluetooth/3G, those netbook will load the SCM (windows app) to
118 * disable the original Wlan/Bluetooth control by BIOS when user press
119 * fn key, then control Wlan/Bluetooth/3G by SCM (software control by
120 * OS). Without SCM, user cann't on/off 3G module on those 3G netbook.
121 * On Linux, msi-laptop driver will do the same thing to disable the
122 * original BIOS control, then might need use HAL or other userland
123 * application to do the software control that simulate with SCM.
124 * e.g. MSI N034 netbook
125 */
126 bool load_scm_model;
127
128 /* Some MSI laptops need delay before reading from EC */
129 bool ec_delay;
130
131 /* Some MSI Wind netbooks (e.g. MSI Wind U100) need loading SCM to get
132 * some features working (e.g. ECO mode), but we cannot change
133 * Wlan/Bluetooth state in software and we can only read its state.
134 */
135 bool ec_read_only;
136 };
137
138 static struct quirk_entry *quirks;
139
140 /* Hardware access */
141
set_lcd_level(int level)142 static int set_lcd_level(int level)
143 {
144 u8 buf[2];
145
146 if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
147 return -EINVAL;
148
149 buf[0] = 0x80;
150 buf[1] = (u8) (level*31);
151
152 return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
153 NULL, 0);
154 }
155
get_lcd_level(void)156 static int get_lcd_level(void)
157 {
158 u8 wdata = 0, rdata;
159 int result;
160
161 result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
162 &rdata, 1);
163 if (result < 0)
164 return result;
165
166 return (int) rdata / 31;
167 }
168
get_auto_brightness(void)169 static int get_auto_brightness(void)
170 {
171 u8 wdata = 4, rdata;
172 int result;
173
174 result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
175 &rdata, 1);
176 if (result < 0)
177 return result;
178
179 return !!(rdata & 8);
180 }
181
set_auto_brightness(int enable)182 static int set_auto_brightness(int enable)
183 {
184 u8 wdata[2], rdata;
185 int result;
186
187 wdata[0] = 4;
188
189 result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
190 &rdata, 1);
191 if (result < 0)
192 return result;
193
194 wdata[0] = 0x84;
195 wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
196
197 return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
198 NULL, 0);
199 }
200
set_device_state(const char * buf,size_t count,u8 mask)201 static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
202 {
203 int status;
204 u8 wdata = 0, rdata;
205 int result;
206
207 if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
208 return -EINVAL;
209
210 if (quirks->ec_read_only)
211 return 0;
212
213 /* read current device state */
214 result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
215 if (result < 0)
216 return result;
217
218 if (!!(rdata & mask) != status) {
219 /* reverse device bit */
220 if (rdata & mask)
221 wdata = rdata & ~mask;
222 else
223 wdata = rdata | mask;
224
225 result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
226 if (result < 0)
227 return result;
228 }
229
230 return count;
231 }
232
get_wireless_state(int * wlan,int * bluetooth)233 static int get_wireless_state(int *wlan, int *bluetooth)
234 {
235 u8 wdata = 0, rdata;
236 int result;
237
238 result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
239 if (result < 0)
240 return result;
241
242 if (wlan)
243 *wlan = !!(rdata & 8);
244
245 if (bluetooth)
246 *bluetooth = !!(rdata & 128);
247
248 return 0;
249 }
250
get_wireless_state_ec_standard(void)251 static int get_wireless_state_ec_standard(void)
252 {
253 u8 rdata;
254 int result;
255
256 result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
257 if (result < 0)
258 return result;
259
260 wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
261
262 bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
263
264 threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
265
266 return 0;
267 }
268
get_threeg_exists(void)269 static int get_threeg_exists(void)
270 {
271 u8 rdata;
272 int result;
273
274 result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
275 if (result < 0)
276 return result;
277
278 threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
279
280 return 0;
281 }
282
283 /* Backlight device stuff */
284
bl_get_brightness(struct backlight_device * b)285 static int bl_get_brightness(struct backlight_device *b)
286 {
287 return get_lcd_level();
288 }
289
290
bl_update_status(struct backlight_device * b)291 static int bl_update_status(struct backlight_device *b)
292 {
293 return set_lcd_level(b->props.brightness);
294 }
295
296 static const struct backlight_ops msibl_ops = {
297 .get_brightness = bl_get_brightness,
298 .update_status = bl_update_status,
299 };
300
301 static struct backlight_device *msibl_device;
302
303 /* Platform device */
304
show_wlan(struct device * dev,struct device_attribute * attr,char * buf)305 static ssize_t show_wlan(struct device *dev,
306 struct device_attribute *attr, char *buf)
307 {
308
309 int ret, enabled = 0;
310
311 if (quirks->old_ec_model) {
312 ret = get_wireless_state(&enabled, NULL);
313 } else {
314 ret = get_wireless_state_ec_standard();
315 enabled = wlan_s;
316 }
317 if (ret < 0)
318 return ret;
319
320 return sprintf(buf, "%i\n", enabled);
321 }
322
store_wlan(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)323 static ssize_t store_wlan(struct device *dev,
324 struct device_attribute *attr, const char *buf, size_t count)
325 {
326 return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
327 }
328
show_bluetooth(struct device * dev,struct device_attribute * attr,char * buf)329 static ssize_t show_bluetooth(struct device *dev,
330 struct device_attribute *attr, char *buf)
331 {
332
333 int ret, enabled = 0;
334
335 if (quirks->old_ec_model) {
336 ret = get_wireless_state(NULL, &enabled);
337 } else {
338 ret = get_wireless_state_ec_standard();
339 enabled = bluetooth_s;
340 }
341 if (ret < 0)
342 return ret;
343
344 return sprintf(buf, "%i\n", enabled);
345 }
346
store_bluetooth(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)347 static ssize_t store_bluetooth(struct device *dev,
348 struct device_attribute *attr, const char *buf, size_t count)
349 {
350 return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
351 }
352
show_threeg(struct device * dev,struct device_attribute * attr,char * buf)353 static ssize_t show_threeg(struct device *dev,
354 struct device_attribute *attr, char *buf)
355 {
356
357 int ret;
358
359 /* old msi ec not support 3G */
360 if (quirks->old_ec_model)
361 return -ENODEV;
362
363 ret = get_wireless_state_ec_standard();
364 if (ret < 0)
365 return ret;
366
367 return sprintf(buf, "%i\n", threeg_s);
368 }
369
store_threeg(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)370 static ssize_t store_threeg(struct device *dev,
371 struct device_attribute *attr, const char *buf, size_t count)
372 {
373 return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
374 }
375
show_lcd_level(struct device * dev,struct device_attribute * attr,char * buf)376 static ssize_t show_lcd_level(struct device *dev,
377 struct device_attribute *attr, char *buf)
378 {
379
380 int ret;
381
382 ret = get_lcd_level();
383 if (ret < 0)
384 return ret;
385
386 return sprintf(buf, "%i\n", ret);
387 }
388
store_lcd_level(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)389 static ssize_t store_lcd_level(struct device *dev,
390 struct device_attribute *attr, const char *buf, size_t count)
391 {
392
393 int level, ret;
394
395 if (sscanf(buf, "%i", &level) != 1 ||
396 (level < 0 || level >= MSI_LCD_LEVEL_MAX))
397 return -EINVAL;
398
399 ret = set_lcd_level(level);
400 if (ret < 0)
401 return ret;
402
403 return count;
404 }
405
show_auto_brightness(struct device * dev,struct device_attribute * attr,char * buf)406 static ssize_t show_auto_brightness(struct device *dev,
407 struct device_attribute *attr, char *buf)
408 {
409
410 int ret;
411
412 ret = get_auto_brightness();
413 if (ret < 0)
414 return ret;
415
416 return sprintf(buf, "%i\n", ret);
417 }
418
store_auto_brightness(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)419 static ssize_t store_auto_brightness(struct device *dev,
420 struct device_attribute *attr, const char *buf, size_t count)
421 {
422
423 int enable, ret;
424
425 if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
426 return -EINVAL;
427
428 ret = set_auto_brightness(enable);
429 if (ret < 0)
430 return ret;
431
432 return count;
433 }
434
show_touchpad(struct device * dev,struct device_attribute * attr,char * buf)435 static ssize_t show_touchpad(struct device *dev,
436 struct device_attribute *attr, char *buf)
437 {
438
439 u8 rdata;
440 int result;
441
442 result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
443 if (result < 0)
444 return result;
445
446 return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
447 }
448
show_turbo(struct device * dev,struct device_attribute * attr,char * buf)449 static ssize_t show_turbo(struct device *dev,
450 struct device_attribute *attr, char *buf)
451 {
452
453 u8 rdata;
454 int result;
455
456 result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
457 if (result < 0)
458 return result;
459
460 return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
461 }
462
show_eco(struct device * dev,struct device_attribute * attr,char * buf)463 static ssize_t show_eco(struct device *dev,
464 struct device_attribute *attr, char *buf)
465 {
466
467 u8 rdata;
468 int result;
469
470 result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
471 if (result < 0)
472 return result;
473
474 return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
475 }
476
show_turbo_cooldown(struct device * dev,struct device_attribute * attr,char * buf)477 static ssize_t show_turbo_cooldown(struct device *dev,
478 struct device_attribute *attr, char *buf)
479 {
480
481 u8 rdata;
482 int result;
483
484 result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
485 if (result < 0)
486 return result;
487
488 return sprintf(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
489 (!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
490 }
491
show_auto_fan(struct device * dev,struct device_attribute * attr,char * buf)492 static ssize_t show_auto_fan(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_FAN_ADDRESS, &rdata);
500 if (result < 0)
501 return result;
502
503 return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
504 }
505
store_auto_fan(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)506 static ssize_t store_auto_fan(struct device *dev,
507 struct device_attribute *attr, const char *buf, size_t count)
508 {
509
510 int enable, result;
511
512 if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
513 return -EINVAL;
514
515 result = ec_write(MSI_STANDARD_EC_FAN_ADDRESS, enable);
516 if (result < 0)
517 return result;
518
519 return count;
520 }
521
522 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
523 static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
524 store_auto_brightness);
525 static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
526 static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
527 static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
528 static DEVICE_ATTR(touchpad, 0444, show_touchpad, NULL);
529 static DEVICE_ATTR(turbo_mode, 0444, show_turbo, NULL);
530 static DEVICE_ATTR(eco_mode, 0444, show_eco, NULL);
531 static DEVICE_ATTR(turbo_cooldown, 0444, show_turbo_cooldown, NULL);
532 static DEVICE_ATTR(auto_fan, 0644, show_auto_fan, store_auto_fan);
533
534 static struct attribute *msipf_attributes[] = {
535 &dev_attr_bluetooth.attr,
536 &dev_attr_wlan.attr,
537 &dev_attr_touchpad.attr,
538 &dev_attr_turbo_mode.attr,
539 &dev_attr_eco_mode.attr,
540 &dev_attr_turbo_cooldown.attr,
541 &dev_attr_auto_fan.attr,
542 NULL
543 };
544
545 static struct attribute *msipf_old_attributes[] = {
546 &dev_attr_lcd_level.attr,
547 &dev_attr_auto_brightness.attr,
548 NULL
549 };
550
551 static const struct attribute_group msipf_attribute_group = {
552 .attrs = msipf_attributes
553 };
554
555 static const struct attribute_group msipf_old_attribute_group = {
556 .attrs = msipf_old_attributes
557 };
558
559 static struct platform_driver msipf_driver = {
560 .driver = {
561 .name = "msi-laptop-pf",
562 .pm = &msi_laptop_pm,
563 },
564 };
565
566 static struct platform_device *msipf_device;
567
568 /* Initialization */
569
570 static struct quirk_entry quirk_old_ec_model = {
571 .old_ec_model = true,
572 };
573
574 static struct quirk_entry quirk_load_scm_model = {
575 .load_scm_model = true,
576 .ec_delay = true,
577 };
578
579 static struct quirk_entry quirk_load_scm_ro_model = {
580 .load_scm_model = true,
581 .ec_read_only = true,
582 };
583
dmi_check_cb(const struct dmi_system_id * dmi)584 static int dmi_check_cb(const struct dmi_system_id *dmi)
585 {
586 pr_info("Identified laptop model '%s'\n", dmi->ident);
587
588 quirks = dmi->driver_data;
589
590 return 1;
591 }
592
msi_work_delay(int msecs)593 static unsigned long msi_work_delay(int msecs)
594 {
595 if (quirks->ec_delay)
596 return msecs_to_jiffies(msecs);
597
598 return 0;
599 }
600
601 static const struct dmi_system_id msi_dmi_table[] __initconst = {
602 {
603 .ident = "MSI S270",
604 .matches = {
605 DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT"),
606 DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
607 DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
608 DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR INT")
609 },
610 .driver_data = &quirk_old_ec_model,
611 .callback = dmi_check_cb
612 },
613 {
614 .ident = "MSI S271",
615 .matches = {
616 DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
617 DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
618 DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
619 DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
620 },
621 .driver_data = &quirk_old_ec_model,
622 .callback = dmi_check_cb
623 },
624 {
625 .ident = "MSI S420",
626 .matches = {
627 DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
628 DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
629 DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
630 DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
631 },
632 .driver_data = &quirk_old_ec_model,
633 .callback = dmi_check_cb
634 },
635 {
636 .ident = "Medion MD96100",
637 .matches = {
638 DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
639 DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
640 DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
641 DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-STAR INT")
642 },
643 .driver_data = &quirk_old_ec_model,
644 .callback = dmi_check_cb
645 },
646 {
647 .ident = "MSI N034",
648 .matches = {
649 DMI_MATCH(DMI_SYS_VENDOR,
650 "MICRO-STAR INTERNATIONAL CO., LTD"),
651 DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
652 DMI_MATCH(DMI_CHASSIS_VENDOR,
653 "MICRO-STAR INTERNATIONAL CO., LTD")
654 },
655 .driver_data = &quirk_load_scm_model,
656 .callback = dmi_check_cb
657 },
658 {
659 .ident = "MSI N051",
660 .matches = {
661 DMI_MATCH(DMI_SYS_VENDOR,
662 "MICRO-STAR INTERNATIONAL CO., LTD"),
663 DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
664 DMI_MATCH(DMI_CHASSIS_VENDOR,
665 "MICRO-STAR INTERNATIONAL CO., LTD")
666 },
667 .driver_data = &quirk_load_scm_model,
668 .callback = dmi_check_cb
669 },
670 {
671 .ident = "MSI N014",
672 .matches = {
673 DMI_MATCH(DMI_SYS_VENDOR,
674 "MICRO-STAR INTERNATIONAL CO., LTD"),
675 DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
676 },
677 .driver_data = &quirk_load_scm_model,
678 .callback = dmi_check_cb
679 },
680 {
681 .ident = "MSI CR620",
682 .matches = {
683 DMI_MATCH(DMI_SYS_VENDOR,
684 "Micro-Star International"),
685 DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
686 },
687 .driver_data = &quirk_load_scm_model,
688 .callback = dmi_check_cb
689 },
690 {
691 .ident = "MSI U270",
692 .matches = {
693 DMI_MATCH(DMI_SYS_VENDOR,
694 "Micro-Star International Co., Ltd."),
695 DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
696 },
697 .driver_data = &quirk_load_scm_model,
698 .callback = dmi_check_cb
699 },
700 {
701 .ident = "MSI U90/U100",
702 .matches = {
703 DMI_MATCH(DMI_SYS_VENDOR,
704 "MICRO-STAR INTERNATIONAL CO., LTD"),
705 DMI_MATCH(DMI_PRODUCT_NAME, "U90/U100"),
706 },
707 .driver_data = &quirk_load_scm_ro_model,
708 .callback = dmi_check_cb
709 },
710 { }
711 };
712 MODULE_DEVICE_TABLE(dmi, msi_dmi_table);
713
rfkill_bluetooth_set(void * data,bool blocked)714 static int rfkill_bluetooth_set(void *data, bool blocked)
715 {
716 /* Do something with blocked...*/
717 /*
718 * blocked == false is on
719 * blocked == true is off
720 */
721 int result = set_device_state(blocked ? "0" : "1", 0,
722 MSI_STANDARD_EC_BLUETOOTH_MASK);
723
724 return min(result, 0);
725 }
726
rfkill_wlan_set(void * data,bool blocked)727 static int rfkill_wlan_set(void *data, bool blocked)
728 {
729 int result = set_device_state(blocked ? "0" : "1", 0,
730 MSI_STANDARD_EC_WLAN_MASK);
731
732 return min(result, 0);
733 }
734
rfkill_threeg_set(void * data,bool blocked)735 static int rfkill_threeg_set(void *data, bool blocked)
736 {
737 int result = set_device_state(blocked ? "0" : "1", 0,
738 MSI_STANDARD_EC_3G_MASK);
739
740 return min(result, 0);
741 }
742
743 static const struct rfkill_ops rfkill_bluetooth_ops = {
744 .set_block = rfkill_bluetooth_set
745 };
746
747 static const struct rfkill_ops rfkill_wlan_ops = {
748 .set_block = rfkill_wlan_set
749 };
750
751 static const struct rfkill_ops rfkill_threeg_ops = {
752 .set_block = rfkill_threeg_set
753 };
754
rfkill_cleanup(void)755 static void rfkill_cleanup(void)
756 {
757 if (rfk_bluetooth) {
758 rfkill_unregister(rfk_bluetooth);
759 rfkill_destroy(rfk_bluetooth);
760 }
761
762 if (rfk_threeg) {
763 rfkill_unregister(rfk_threeg);
764 rfkill_destroy(rfk_threeg);
765 }
766
767 if (rfk_wlan) {
768 rfkill_unregister(rfk_wlan);
769 rfkill_destroy(rfk_wlan);
770 }
771 }
772
msi_rfkill_set_state(struct rfkill * rfkill,bool blocked)773 static bool msi_rfkill_set_state(struct rfkill *rfkill, bool blocked)
774 {
775 if (quirks->ec_read_only)
776 return rfkill_set_hw_state(rfkill, blocked);
777 else
778 return rfkill_set_sw_state(rfkill, blocked);
779 }
780
msi_update_rfkill(struct work_struct * ignored)781 static void msi_update_rfkill(struct work_struct *ignored)
782 {
783 get_wireless_state_ec_standard();
784
785 if (rfk_wlan)
786 msi_rfkill_set_state(rfk_wlan, !wlan_s);
787 if (rfk_bluetooth)
788 msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
789 if (rfk_threeg)
790 msi_rfkill_set_state(rfk_threeg, !threeg_s);
791 }
792 static DECLARE_DELAYED_WORK(msi_rfkill_dwork, msi_update_rfkill);
793
msi_send_touchpad_key(struct work_struct * ignored)794 static void msi_send_touchpad_key(struct work_struct *ignored)
795 {
796 u8 rdata;
797 int result;
798
799 result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
800 if (result < 0)
801 return;
802
803 sparse_keymap_report_event(msi_laptop_input_dev,
804 (rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
805 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
806 }
807 static DECLARE_DELAYED_WORK(msi_touchpad_dwork, msi_send_touchpad_key);
808
msi_laptop_i8042_filter(unsigned char data,unsigned char str,struct serio * port)809 static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
810 struct serio *port)
811 {
812 static bool extended;
813
814 if (str & I8042_STR_AUXDATA)
815 return false;
816
817 /* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
818 if (unlikely(data == 0xe0)) {
819 extended = true;
820 return false;
821 } else if (unlikely(extended)) {
822 extended = false;
823 switch (data) {
824 case 0xE4:
825 schedule_delayed_work(&msi_touchpad_dwork, msi_work_delay(500));
826 break;
827 case 0x54:
828 case 0x62:
829 case 0x76:
830 schedule_delayed_work(&msi_rfkill_dwork, msi_work_delay(500));
831 break;
832 }
833 }
834
835 return false;
836 }
837
msi_init_rfkill(struct work_struct * ignored)838 static void msi_init_rfkill(struct work_struct *ignored)
839 {
840 if (rfk_wlan) {
841 msi_rfkill_set_state(rfk_wlan, !wlan_s);
842 rfkill_wlan_set(NULL, !wlan_s);
843 }
844 if (rfk_bluetooth) {
845 msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
846 rfkill_bluetooth_set(NULL, !bluetooth_s);
847 }
848 if (rfk_threeg) {
849 msi_rfkill_set_state(rfk_threeg, !threeg_s);
850 rfkill_threeg_set(NULL, !threeg_s);
851 }
852 }
853 static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
854
rfkill_init(struct platform_device * sdev)855 static int rfkill_init(struct platform_device *sdev)
856 {
857 /* add rfkill */
858 int retval;
859
860 /* keep the hardware wireless state */
861 get_wireless_state_ec_standard();
862
863 rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
864 RFKILL_TYPE_BLUETOOTH,
865 &rfkill_bluetooth_ops, NULL);
866 if (!rfk_bluetooth) {
867 retval = -ENOMEM;
868 goto err_bluetooth;
869 }
870 retval = rfkill_register(rfk_bluetooth);
871 if (retval)
872 goto err_bluetooth;
873
874 rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
875 &rfkill_wlan_ops, NULL);
876 if (!rfk_wlan) {
877 retval = -ENOMEM;
878 goto err_wlan;
879 }
880 retval = rfkill_register(rfk_wlan);
881 if (retval)
882 goto err_wlan;
883
884 if (threeg_exists) {
885 rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
886 RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
887 if (!rfk_threeg) {
888 retval = -ENOMEM;
889 goto err_threeg;
890 }
891 retval = rfkill_register(rfk_threeg);
892 if (retval)
893 goto err_threeg;
894 }
895
896 /* schedule to run rfkill state initial */
897 schedule_delayed_work(&msi_rfkill_init, msi_work_delay(1000));
898 return 0;
899
900 err_threeg:
901 rfkill_destroy(rfk_threeg);
902 if (rfk_wlan)
903 rfkill_unregister(rfk_wlan);
904 err_wlan:
905 rfkill_destroy(rfk_wlan);
906 if (rfk_bluetooth)
907 rfkill_unregister(rfk_bluetooth);
908 err_bluetooth:
909 rfkill_destroy(rfk_bluetooth);
910
911 return retval;
912 }
913
msi_scm_disable_hw_fn_handling(void)914 static int msi_scm_disable_hw_fn_handling(void)
915 {
916 u8 data;
917 int result;
918
919 if (!quirks->load_scm_model)
920 return 0;
921
922 /* set load SCM to disable hardware control by fn key */
923 result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
924 if (result < 0)
925 return result;
926
927 result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
928 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
929 if (result < 0)
930 return result;
931
932 return 0;
933 }
934
935 #ifdef CONFIG_PM_SLEEP
msi_laptop_resume(struct device * device)936 static int msi_laptop_resume(struct device *device)
937 {
938 return msi_scm_disable_hw_fn_handling();
939 }
940 #endif
941
msi_laptop_input_setup(void)942 static int __init msi_laptop_input_setup(void)
943 {
944 int err;
945
946 msi_laptop_input_dev = input_allocate_device();
947 if (!msi_laptop_input_dev)
948 return -ENOMEM;
949
950 msi_laptop_input_dev->name = "MSI Laptop hotkeys";
951 msi_laptop_input_dev->phys = "msi-laptop/input0";
952 msi_laptop_input_dev->id.bustype = BUS_HOST;
953
954 err = sparse_keymap_setup(msi_laptop_input_dev,
955 msi_laptop_keymap, NULL);
956 if (err)
957 goto err_free_dev;
958
959 err = input_register_device(msi_laptop_input_dev);
960 if (err)
961 goto err_free_dev;
962
963 return 0;
964
965 err_free_dev:
966 input_free_device(msi_laptop_input_dev);
967 return err;
968 }
969
load_scm_model_init(struct platform_device * sdev)970 static int __init load_scm_model_init(struct platform_device *sdev)
971 {
972 int result;
973
974 if (!quirks->ec_read_only) {
975 /* allow userland write sysfs file */
976 dev_attr_bluetooth.store = store_bluetooth;
977 dev_attr_wlan.store = store_wlan;
978 dev_attr_threeg.store = store_threeg;
979 dev_attr_bluetooth.attr.mode |= S_IWUSR;
980 dev_attr_wlan.attr.mode |= S_IWUSR;
981 dev_attr_threeg.attr.mode |= S_IWUSR;
982 }
983
984 /* disable hardware control by fn key */
985 result = msi_scm_disable_hw_fn_handling();
986 if (result < 0)
987 return result;
988
989 /* initial rfkill */
990 result = rfkill_init(sdev);
991 if (result < 0)
992 goto fail_rfkill;
993
994 /* setup input device */
995 result = msi_laptop_input_setup();
996 if (result)
997 goto fail_input;
998
999 result = i8042_install_filter(msi_laptop_i8042_filter);
1000 if (result) {
1001 pr_err("Unable to install key filter\n");
1002 goto fail_filter;
1003 }
1004
1005 return 0;
1006
1007 fail_filter:
1008 input_unregister_device(msi_laptop_input_dev);
1009
1010 fail_input:
1011 rfkill_cleanup();
1012
1013 fail_rfkill:
1014 return result;
1015 }
1016
msi_scm_model_exit(void)1017 static void msi_scm_model_exit(void)
1018 {
1019 if (!quirks->load_scm_model)
1020 return;
1021
1022 i8042_remove_filter(msi_laptop_i8042_filter);
1023 cancel_delayed_work_sync(&msi_touchpad_dwork);
1024 input_unregister_device(msi_laptop_input_dev);
1025 cancel_delayed_work_sync(&msi_rfkill_dwork);
1026 rfkill_cleanup();
1027 }
1028
msi_init(void)1029 static int __init msi_init(void)
1030 {
1031 int ret;
1032
1033 if (acpi_disabled)
1034 return -ENODEV;
1035
1036 dmi_check_system(msi_dmi_table);
1037 if (!quirks)
1038 /* quirks may be NULL if no match in DMI table */
1039 quirks = &quirk_load_scm_model;
1040 if (force)
1041 quirks = &quirk_old_ec_model;
1042
1043 if (!quirks->old_ec_model)
1044 get_threeg_exists();
1045
1046 if (auto_brightness < 0 || auto_brightness > 2)
1047 return -EINVAL;
1048
1049 /* Register backlight stuff */
1050 if (quirks->old_ec_model &&
1051 acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1052 struct backlight_properties props;
1053 memset(&props, 0, sizeof(struct backlight_properties));
1054 props.type = BACKLIGHT_PLATFORM;
1055 props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
1056 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
1057 NULL, &msibl_ops,
1058 &props);
1059 if (IS_ERR(msibl_device))
1060 return PTR_ERR(msibl_device);
1061 }
1062
1063 ret = platform_driver_register(&msipf_driver);
1064 if (ret)
1065 goto fail_backlight;
1066
1067 /* Register platform stuff */
1068
1069 msipf_device = platform_device_alloc("msi-laptop-pf", PLATFORM_DEVID_NONE);
1070 if (!msipf_device) {
1071 ret = -ENOMEM;
1072 goto fail_platform_driver;
1073 }
1074
1075 ret = platform_device_add(msipf_device);
1076 if (ret)
1077 goto fail_device_add;
1078
1079 if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
1080 ret = -EINVAL;
1081 goto fail_scm_model_init;
1082 }
1083
1084 ret = sysfs_create_group(&msipf_device->dev.kobj,
1085 &msipf_attribute_group);
1086 if (ret)
1087 goto fail_create_group;
1088
1089 if (!quirks->old_ec_model) {
1090 if (threeg_exists)
1091 ret = device_create_file(&msipf_device->dev,
1092 &dev_attr_threeg);
1093 if (ret)
1094 goto fail_create_attr;
1095 } else {
1096 ret = sysfs_create_group(&msipf_device->dev.kobj,
1097 &msipf_old_attribute_group);
1098 if (ret)
1099 goto fail_create_attr;
1100
1101 /* Disable automatic brightness control by default because
1102 * this module was probably loaded to do brightness control in
1103 * software. */
1104
1105 if (auto_brightness != 2)
1106 set_auto_brightness(auto_brightness);
1107 }
1108
1109 return 0;
1110
1111 fail_create_attr:
1112 sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1113 fail_create_group:
1114 msi_scm_model_exit();
1115 fail_scm_model_init:
1116 platform_device_del(msipf_device);
1117 fail_device_add:
1118 platform_device_put(msipf_device);
1119 fail_platform_driver:
1120 platform_driver_unregister(&msipf_driver);
1121 fail_backlight:
1122 backlight_device_unregister(msibl_device);
1123
1124 return ret;
1125 }
1126
msi_cleanup(void)1127 static void __exit msi_cleanup(void)
1128 {
1129 msi_scm_model_exit();
1130 sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1131 if (!quirks->old_ec_model && threeg_exists)
1132 device_remove_file(&msipf_device->dev, &dev_attr_threeg);
1133 platform_device_unregister(msipf_device);
1134 platform_driver_unregister(&msipf_driver);
1135 backlight_device_unregister(msibl_device);
1136
1137 if (quirks->old_ec_model) {
1138 /* Enable automatic brightness control again */
1139 if (auto_brightness != 2)
1140 set_auto_brightness(1);
1141 }
1142 }
1143
1144 module_init(msi_init);
1145 module_exit(msi_cleanup);
1146
1147 MODULE_AUTHOR("Lennart Poettering");
1148 MODULE_DESCRIPTION("MSI Laptop Support");
1149 MODULE_LICENSE("GPL");
1150