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Linux/drivers/platform/x86/msi-laptop.c

  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 struct attribute_group msipf_attribute_group = {
567         .attrs = msipf_attributes
568 };
569 
570 static 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 struct dmi_system_id __initdata msi_dmi_table[] = {
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 ? "" : "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 ? "" : "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 ? "" : "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_keymap;
980 
981         return 0;
982 
983 err_free_keymap:
984         sparse_keymap_free(msi_laptop_input_dev);
985 err_free_dev:
986         input_free_device(msi_laptop_input_dev);
987         return err;
988 }
989 
990 static void msi_laptop_input_destroy(void)
991 {
992         sparse_keymap_free(msi_laptop_input_dev);
993         input_unregister_device(msi_laptop_input_dev);
994 }
995 
996 static int __init load_scm_model_init(struct platform_device *sdev)
997 {
998         u8 data;
999         int result;
1000 
1001         if (!quirks->ec_read_only) {
1002                 /* allow userland write sysfs file  */
1003                 dev_attr_bluetooth.store = store_bluetooth;
1004                 dev_attr_wlan.store = store_wlan;
1005                 dev_attr_threeg.store = store_threeg;
1006                 dev_attr_bluetooth.attr.mode |= S_IWUSR;
1007                 dev_attr_wlan.attr.mode |= S_IWUSR;
1008                 dev_attr_threeg.attr.mode |= S_IWUSR;
1009         }
1010 
1011         /* disable hardware control by fn key */
1012         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
1013         if (result < 0)
1014                 return result;
1015 
1016         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
1017                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
1018         if (result < 0)
1019                 return result;
1020 
1021         /* initial rfkill */
1022         result = rfkill_init(sdev);
1023         if (result < 0)
1024                 goto fail_rfkill;
1025 
1026         /* setup input device */
1027         result = msi_laptop_input_setup();
1028         if (result)
1029                 goto fail_input;
1030 
1031         result = i8042_install_filter(msi_laptop_i8042_filter);
1032         if (result) {
1033                 pr_err("Unable to install key filter\n");
1034                 goto fail_filter;
1035         }
1036 
1037         return 0;
1038 
1039 fail_filter:
1040         msi_laptop_input_destroy();
1041 
1042 fail_input:
1043         rfkill_cleanup();
1044 
1045 fail_rfkill:
1046 
1047         return result;
1048 
1049 }
1050 
1051 static int __init msi_init(void)
1052 {
1053         int ret;
1054 
1055         if (acpi_disabled)
1056                 return -ENODEV;
1057 
1058         dmi_check_system(msi_dmi_table);
1059         if (!quirks)
1060                 /* quirks may be NULL if no match in DMI table */
1061                 quirks = &quirk_load_scm_model;
1062         if (force)
1063                 quirks = &quirk_old_ec_model;
1064 
1065         if (!quirks->old_ec_model)
1066                 get_threeg_exists();
1067 
1068         if (auto_brightness < 0 || auto_brightness > 2)
1069                 return -EINVAL;
1070 
1071         /* Register backlight stuff */
1072 
1073         if (quirks->old_ec_model ||
1074             acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1075                 struct backlight_properties props;
1076                 memset(&props, 0, sizeof(struct backlight_properties));
1077                 props.type = BACKLIGHT_PLATFORM;
1078                 props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
1079                 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
1080                                                          NULL, &msibl_ops,
1081                                                          &props);
1082                 if (IS_ERR(msibl_device))
1083                         return PTR_ERR(msibl_device);
1084         }
1085 
1086         ret = platform_driver_register(&msipf_driver);
1087         if (ret)
1088                 goto fail_backlight;
1089 
1090         /* Register platform stuff */
1091 
1092         msipf_device = platform_device_alloc("msi-laptop-pf", -1);
1093         if (!msipf_device) {
1094                 ret = -ENOMEM;
1095                 goto fail_platform_driver;
1096         }
1097 
1098         ret = platform_device_add(msipf_device);
1099         if (ret)
1100                 goto fail_device_add;
1101 
1102         if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
1103                 ret = -EINVAL;
1104                 goto fail_scm_model_init;
1105         }
1106 
1107         ret = sysfs_create_group(&msipf_device->dev.kobj,
1108                                  &msipf_attribute_group);
1109         if (ret)
1110                 goto fail_create_group;
1111 
1112         if (!quirks->old_ec_model) {
1113                 if (threeg_exists)
1114                         ret = device_create_file(&msipf_device->dev,
1115                                                 &dev_attr_threeg);
1116                 if (ret)
1117                         goto fail_create_attr;
1118         } else {
1119                 ret = sysfs_create_group(&msipf_device->dev.kobj,
1120                                          &msipf_old_attribute_group);
1121                 if (ret)
1122                         goto fail_create_attr;
1123 
1124                 /* Disable automatic brightness control by default because
1125                  * this module was probably loaded to do brightness control in
1126                  * software. */
1127 
1128                 if (auto_brightness != 2)
1129                         set_auto_brightness(auto_brightness);
1130         }
1131 
1132         pr_info("driver " MSI_DRIVER_VERSION " successfully loaded\n");
1133 
1134         return 0;
1135 
1136 fail_create_attr:
1137         sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1138 fail_create_group:
1139         if (quirks->load_scm_model) {
1140                 i8042_remove_filter(msi_laptop_i8042_filter);
1141                 cancel_delayed_work_sync(&msi_rfkill_dwork);
1142                 cancel_work_sync(&msi_rfkill_work);
1143                 rfkill_cleanup();
1144         }
1145 fail_scm_model_init:
1146         platform_device_del(msipf_device);
1147 fail_device_add:
1148         platform_device_put(msipf_device);
1149 fail_platform_driver:
1150         platform_driver_unregister(&msipf_driver);
1151 fail_backlight:
1152         backlight_device_unregister(msibl_device);
1153 
1154         return ret;
1155 }
1156 
1157 static void __exit msi_cleanup(void)
1158 {
1159         if (quirks->load_scm_model) {
1160                 i8042_remove_filter(msi_laptop_i8042_filter);
1161                 msi_laptop_input_destroy();
1162                 cancel_delayed_work_sync(&msi_rfkill_dwork);
1163                 cancel_work_sync(&msi_rfkill_work);
1164                 rfkill_cleanup();
1165         }
1166 
1167         sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
1168         if (!quirks->old_ec_model && threeg_exists)
1169                 device_remove_file(&msipf_device->dev, &dev_attr_threeg);
1170         platform_device_unregister(msipf_device);
1171         platform_driver_unregister(&msipf_driver);
1172         backlight_device_unregister(msibl_device);
1173 
1174         if (quirks->old_ec_model) {
1175                 /* Enable automatic brightness control again */
1176                 if (auto_brightness != 2)
1177                         set_auto_brightness(1);
1178         }
1179 
1180         pr_info("driver unloaded\n");
1181 }
1182 
1183 module_init(msi_init);
1184 module_exit(msi_cleanup);
1185 
1186 MODULE_AUTHOR("Lennart Poettering");
1187 MODULE_DESCRIPTION("MSI Laptop Support");
1188 MODULE_VERSION(MSI_DRIVER_VERSION);
1189 MODULE_LICENSE("GPL");
1190 
1191 MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1192 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
1193 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1194 MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1195 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N034:*");
1196 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N051:*");
1197 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N014:*");
1198 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnCR620:*");
1199 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnU270series:*");
1200 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnU90/U100:*");
1201 

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