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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 
 68 #define MSI_DRIVER_VERSION "0.5"
 69 
 70 #define MSI_LCD_LEVEL_MAX 9
 71 
 72 #define MSI_EC_COMMAND_WIRELESS 0x10
 73 #define MSI_EC_COMMAND_LCD_LEVEL 0x11
 74 
 75 #define MSI_STANDARD_EC_COMMAND_ADDRESS 0x2e
 76 #define MSI_STANDARD_EC_BLUETOOTH_MASK  (1 << 0)
 77 #define MSI_STANDARD_EC_WEBCAM_MASK     (1 << 1)
 78 #define MSI_STANDARD_EC_WLAN_MASK       (1 << 3)
 79 #define MSI_STANDARD_EC_3G_MASK         (1 << 4)
 80 
 81 /* For set SCM load flag to disable BIOS fn key */
 82 #define MSI_STANDARD_EC_SCM_LOAD_ADDRESS        0x2d
 83 #define MSI_STANDARD_EC_SCM_LOAD_MASK           (1 << 0)
 84 
 85 #define MSI_STANDARD_EC_FUNCTIONS_ADDRESS       0xe4
 86 /* Power LED is orange - Turbo mode */
 87 #define MSI_STANDARD_EC_TURBO_MASK              (1 << 1)
 88 /* Power LED is green - ECO mode */
 89 #define MSI_STANDARD_EC_ECO_MASK                (1 << 3)
 90 /* Touchpad is turned on */
 91 #define MSI_STANDARD_EC_TOUCHPAD_MASK           (1 << 4)
 92 /* If this bit != bit 1, turbo mode can't be toggled */
 93 #define MSI_STANDARD_EC_TURBO_COOLDOWN_MASK     (1 << 7)
 94 
 95 #define MSI_STANDARD_EC_FAN_ADDRESS             0x33
 96 /* If zero, fan rotates at maximal speed */
 97 #define MSI_STANDARD_EC_AUTOFAN_MASK            (1 << 0)
 98 
 99 #ifdef CONFIG_PM_SLEEP
100 static int msi_laptop_resume(struct device *device);
101 #endif
102 static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);
103 
104 #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS  0x2f
105 
106 static bool force;
107 module_param(force, bool, 0);
108 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
109 
110 static int auto_brightness;
111 module_param(auto_brightness, int, 0);
112 MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
113 
114 static const struct key_entry msi_laptop_keymap[] = {
115         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },  /* Touch Pad On */
116         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
117         {KE_END, 0}
118 };
119 
120 static struct input_dev *msi_laptop_input_dev;
121 
122 static int wlan_s, bluetooth_s, threeg_s;
123 static int threeg_exists;
124 static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
125 
126 /* MSI laptop quirks */
127 struct quirk_entry {
128         bool old_ec_model;
129 
130         /* Some MSI 3G netbook only have one fn key to control
131          * Wlan/Bluetooth/3G, those netbook will load the SCM (windows app) to
132          * disable the original Wlan/Bluetooth control by BIOS when user press
133          * fn key, then control Wlan/Bluetooth/3G by SCM (software control by
134          * OS). Without SCM, user cann't on/off 3G module on those 3G netbook.
135          * On Linux, msi-laptop driver will do the same thing to disable the
136          * original BIOS control, then might need use HAL or other userland
137          * application to do the software control that simulate with SCM.
138          * e.g. MSI N034 netbook
139          */
140         bool load_scm_model;
141 
142         /* Some MSI laptops need delay before reading from EC */
143         bool ec_delay;
144 
145         /* Some MSI Wind netbooks (e.g. MSI Wind U100) need loading SCM to get
146          * some features working (e.g. ECO mode), but we cannot change
147          * Wlan/Bluetooth state in software and we can only read its state.
148          */
149         bool ec_read_only;
150 };
151 
152 static struct quirk_entry *quirks;
153 
154 /* Hardware access */
155 
156 static int set_lcd_level(int level)
157 {
158         u8 buf[2];
159 
160         if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
161                 return -EINVAL;
162 
163         buf[0] = 0x80;
164         buf[1] = (u8) (level*31);
165 
166         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
167                               NULL, 0);
168 }
169 
170 static int get_lcd_level(void)
171 {
172         u8 wdata = 0, rdata;
173         int result;
174 
175         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
176                                 &rdata, 1);
177         if (result < 0)
178                 return result;
179 
180         return (int) rdata / 31;
181 }
182 
183 static int get_auto_brightness(void)
184 {
185         u8 wdata = 4, rdata;
186         int result;
187 
188         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
189                                 &rdata, 1);
190         if (result < 0)
191                 return result;
192 
193         return !!(rdata & 8);
194 }
195 
196 static int set_auto_brightness(int enable)
197 {
198         u8 wdata[2], rdata;
199         int result;
200 
201         wdata[0] = 4;
202 
203         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
204                                 &rdata, 1);
205         if (result < 0)
206                 return result;
207 
208         wdata[0] = 0x84;
209         wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
210 
211         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
212                               NULL, 0);
213 }
214 
215 static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
216 {
217         int status;
218         u8 wdata = 0, rdata;
219         int result;
220 
221         if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
222                 return -EINVAL;
223 
224         if (quirks->ec_read_only)
225                 return -EOPNOTSUPP;
226 
227         /* read current device state */
228         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
229         if (result < 0)
230                 return result;
231 
232         if (!!(rdata & mask) != status) {
233                 /* reverse device bit */
234                 if (rdata & mask)
235                         wdata = rdata & ~mask;
236                 else
237                         wdata = rdata | mask;
238 
239                 result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
240                 if (result < 0)
241                         return result;
242         }
243 
244         return count;
245 }
246 
247 static int get_wireless_state(int *wlan, int *bluetooth)
248 {
249         u8 wdata = 0, rdata;
250         int result;
251 
252         result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
253         if (result < 0)
254                 return result;
255 
256         if (wlan)
257                 *wlan = !!(rdata & 8);
258 
259         if (bluetooth)
260                 *bluetooth = !!(rdata & 128);
261 
262         return 0;
263 }
264 
265 static int get_wireless_state_ec_standard(void)
266 {
267         u8 rdata;
268         int result;
269 
270         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
271         if (result < 0)
272                 return result;
273 
274         wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
275 
276         bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
277 
278         threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
279 
280         return 0;
281 }
282 
283 static int get_threeg_exists(void)
284 {
285         u8 rdata;
286         int result;
287 
288         result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
289         if (result < 0)
290                 return result;
291 
292         threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
293 
294         return 0;
295 }
296 
297 /* Backlight device stuff */
298 
299 static int bl_get_brightness(struct backlight_device *b)
300 {
301         return get_lcd_level();
302 }
303 
304 
305 static int bl_update_status(struct backlight_device *b)
306 {
307         return set_lcd_level(b->props.brightness);
308 }
309 
310 static const struct backlight_ops msibl_ops = {
311         .get_brightness = bl_get_brightness,
312         .update_status  = bl_update_status,
313 };
314 
315 static struct backlight_device *msibl_device;
316 
317 /* Platform device */
318 
319 static ssize_t show_wlan(struct device *dev,
320         struct device_attribute *attr, char *buf)
321 {
322 
323         int ret, enabled = 0;
324 
325         if (quirks->old_ec_model) {
326                 ret = get_wireless_state(&enabled, NULL);
327         } else {
328                 ret = get_wireless_state_ec_standard();
329                 enabled = wlan_s;
330         }
331         if (ret < 0)
332                 return ret;
333 
334         return sprintf(buf, "%i\n", enabled);
335 }
336 
337 static ssize_t store_wlan(struct device *dev,
338         struct device_attribute *attr, const char *buf, size_t count)
339 {
340         return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
341 }
342 
343 static ssize_t show_bluetooth(struct device *dev,
344         struct device_attribute *attr, char *buf)
345 {
346 
347         int ret, enabled = 0;
348 
349         if (quirks->old_ec_model) {
350                 ret = get_wireless_state(NULL, &enabled);
351         } else {
352                 ret = get_wireless_state_ec_standard();
353                 enabled = bluetooth_s;
354         }
355         if (ret < 0)
356                 return ret;
357 
358         return sprintf(buf, "%i\n", enabled);
359 }
360 
361 static ssize_t store_bluetooth(struct device *dev,
362         struct device_attribute *attr, const char *buf, size_t count)
363 {
364         return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
365 }
366 
367 static ssize_t show_threeg(struct device *dev,
368         struct device_attribute *attr, char *buf)
369 {
370 
371         int ret;
372 
373         /* old msi ec not support 3G */
374         if (quirks->old_ec_model)
375                 return -ENODEV;
376 
377         ret = get_wireless_state_ec_standard();
378         if (ret < 0)
379                 return ret;
380 
381         return sprintf(buf, "%i\n", threeg_s);
382 }
383 
384 static ssize_t store_threeg(struct device *dev,
385         struct device_attribute *attr, const char *buf, size_t count)
386 {
387         return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
388 }
389 
390 static ssize_t show_lcd_level(struct device *dev,
391         struct device_attribute *attr, char *buf)
392 {
393 
394         int ret;
395 
396         ret = get_lcd_level();
397         if (ret < 0)
398                 return ret;
399 
400         return sprintf(buf, "%i\n", ret);
401 }
402 
403 static ssize_t store_lcd_level(struct device *dev,
404         struct device_attribute *attr, const char *buf, size_t count)
405 {
406 
407         int level, ret;
408 
409         if (sscanf(buf, "%i", &level) != 1 ||
410             (level < 0 || level >= MSI_LCD_LEVEL_MAX))
411                 return -EINVAL;
412 
413         ret = set_lcd_level(level);
414         if (ret < 0)
415                 return ret;
416 
417         return count;
418 }
419 
420 static ssize_t show_auto_brightness(struct device *dev,
421         struct device_attribute *attr, char *buf)
422 {
423 
424         int ret;
425 
426         ret = get_auto_brightness();
427         if (ret < 0)
428                 return ret;
429 
430         return sprintf(buf, "%i\n", ret);
431 }
432 
433 static ssize_t store_auto_brightness(struct device *dev,
434         struct device_attribute *attr, const char *buf, size_t count)
435 {
436 
437         int enable, ret;
438 
439         if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
440                 return -EINVAL;
441 
442         ret = set_auto_brightness(enable);
443         if (ret < 0)
444                 return ret;
445 
446         return count;
447 }
448 
449 static ssize_t show_touchpad(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_TOUCHPAD_MASK));
461 }
462 
463 static ssize_t show_turbo(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_TURBO_MASK));
475 }
476 
477 static ssize_t show_eco(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_ECO_MASK));
489 }
490 
491 static ssize_t show_turbo_cooldown(struct device *dev,
492         struct device_attribute *attr, char *buf)
493 {
494 
495         u8 rdata;
496         int result;
497 
498         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
499         if (result < 0)
500                 return result;
501 
502         return sprintf(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
503                 (!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
504 }
505 
506 static ssize_t show_auto_fan(struct device *dev,
507         struct device_attribute *attr, char *buf)
508 {
509 
510         u8 rdata;
511         int result;
512 
513         result = ec_read(MSI_STANDARD_EC_FAN_ADDRESS, &rdata);
514         if (result < 0)
515                 return result;
516 
517         return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
518 }
519 
520 static ssize_t store_auto_fan(struct device *dev,
521         struct device_attribute *attr, const char *buf, size_t count)
522 {
523 
524         int enable, result;
525 
526         if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
527                 return -EINVAL;
528 
529         result = ec_write(MSI_STANDARD_EC_FAN_ADDRESS, enable);
530         if (result < 0)
531                 return result;
532 
533         return count;
534 }
535 
536 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
537 static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
538                    store_auto_brightness);
539 static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
540 static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
541 static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
542 static DEVICE_ATTR(touchpad, 0444, show_touchpad, NULL);
543 static DEVICE_ATTR(turbo_mode, 0444, show_turbo, NULL);
544 static DEVICE_ATTR(eco_mode, 0444, show_eco, NULL);
545 static DEVICE_ATTR(turbo_cooldown, 0444, show_turbo_cooldown, NULL);
546 static DEVICE_ATTR(auto_fan, 0644, show_auto_fan, store_auto_fan);
547 
548 static struct attribute *msipf_attributes[] = {
549         &dev_attr_bluetooth.attr,
550         &dev_attr_wlan.attr,
551         &dev_attr_touchpad.attr,
552         &dev_attr_turbo_mode.attr,
553         &dev_attr_eco_mode.attr,
554         &dev_attr_turbo_cooldown.attr,
555         &dev_attr_auto_fan.attr,
556         NULL
557 };
558 
559 static struct attribute *msipf_old_attributes[] = {
560         &dev_attr_lcd_level.attr,
561         &dev_attr_auto_brightness.attr,
562         NULL
563 };
564 
565 static struct attribute_group msipf_attribute_group = {
566         .attrs = msipf_attributes
567 };
568 
569 static struct attribute_group msipf_old_attribute_group = {
570         .attrs = msipf_old_attributes
571 };
572 
573 static struct platform_driver msipf_driver = {
574         .driver = {
575                 .name = "msi-laptop-pf",
576                 .pm = &msi_laptop_pm,
577         },
578 };
579 
580 static struct platform_device *msipf_device;
581 
582 /* Initialization */
583 
584 static struct quirk_entry quirk_old_ec_model = {
585         .old_ec_model = true,
586 };
587 
588 static struct quirk_entry quirk_load_scm_model = {
589         .load_scm_model = true,
590         .ec_delay = true,
591 };
592 
593 static struct quirk_entry quirk_load_scm_ro_model = {
594         .load_scm_model = true,
595         .ec_read_only = true,
596 };
597 
598 static int dmi_check_cb(const struct dmi_system_id *dmi)
599 {
600         pr_info("Identified laptop model '%s'\n", dmi->ident);
601 
602         quirks = dmi->driver_data;
603 
604         return 1;
605 }
606 
607 static struct dmi_system_id __initdata msi_dmi_table[] = {
608         {
609                 .ident = "MSI S270",
610                 .matches = {
611                         DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
612                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
613                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
614                         DMI_MATCH(DMI_CHASSIS_VENDOR,
615                                   "MICRO-STAR INT'L CO.,LTD")
616                 },
617                 .driver_data = &quirk_old_ec_model,
618                 .callback = dmi_check_cb
619         },
620         {
621                 .ident = "MSI S271",
622                 .matches = {
623                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
624                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
625                         DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
626                         DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
627                 },
628                 .driver_data = &quirk_old_ec_model,
629                 .callback = dmi_check_cb
630         },
631         {
632                 .ident = "MSI S420",
633                 .matches = {
634                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
635                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
636                         DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
637                         DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
638                 },
639                 .driver_data = &quirk_old_ec_model,
640                 .callback = dmi_check_cb
641         },
642         {
643                 .ident = "Medion MD96100",
644                 .matches = {
645                         DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
646                         DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
647                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
648                         DMI_MATCH(DMI_CHASSIS_VENDOR,
649                                   "MICRO-STAR INT'L CO.,LTD")
650                 },
651                 .driver_data = &quirk_old_ec_model,
652                 .callback = dmi_check_cb
653         },
654         {
655                 .ident = "MSI N034",
656                 .matches = {
657                         DMI_MATCH(DMI_SYS_VENDOR,
658                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
659                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
660                         DMI_MATCH(DMI_CHASSIS_VENDOR,
661                         "MICRO-STAR INTERNATIONAL CO., LTD")
662                 },
663                 .driver_data = &quirk_load_scm_model,
664                 .callback = dmi_check_cb
665         },
666         {
667                 .ident = "MSI N051",
668                 .matches = {
669                         DMI_MATCH(DMI_SYS_VENDOR,
670                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
671                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
672                         DMI_MATCH(DMI_CHASSIS_VENDOR,
673                         "MICRO-STAR INTERNATIONAL CO., LTD")
674                 },
675                 .driver_data = &quirk_load_scm_model,
676                 .callback = dmi_check_cb
677         },
678         {
679                 .ident = "MSI N014",
680                 .matches = {
681                         DMI_MATCH(DMI_SYS_VENDOR,
682                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
683                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
684                 },
685                 .driver_data = &quirk_load_scm_model,
686                 .callback = dmi_check_cb
687         },
688         {
689                 .ident = "MSI CR620",
690                 .matches = {
691                         DMI_MATCH(DMI_SYS_VENDOR,
692                                 "Micro-Star International"),
693                         DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
694                 },
695                 .driver_data = &quirk_load_scm_model,
696                 .callback = dmi_check_cb
697         },
698         {
699                 .ident = "MSI U270",
700                 .matches = {
701                         DMI_MATCH(DMI_SYS_VENDOR,
702                                 "Micro-Star International Co., Ltd."),
703                         DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
704                 },
705                 .driver_data = &quirk_load_scm_model,
706                 .callback = dmi_check_cb
707         },
708         {
709                 .ident = "MSI U90/U100",
710                 .matches = {
711                         DMI_MATCH(DMI_SYS_VENDOR,
712                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
713                         DMI_MATCH(DMI_PRODUCT_NAME, "U90/U100"),
714                 },
715                 .driver_data = &quirk_load_scm_ro_model,
716                 .callback = dmi_check_cb
717         },
718         { }
719 };
720 
721 static int rfkill_bluetooth_set(void *data, bool blocked)
722 {
723         /* Do something with blocked...*/
724         /*
725          * blocked == false is on
726          * blocked == true is off
727          */
728         int result = set_device_state(blocked ? "" : "1", 0,
729                         MSI_STANDARD_EC_BLUETOOTH_MASK);
730 
731         return min(result, 0);
732 }
733 
734 static int rfkill_wlan_set(void *data, bool blocked)
735 {
736         int result = set_device_state(blocked ? "" : "1", 0,
737                         MSI_STANDARD_EC_WLAN_MASK);
738 
739         return min(result, 0);
740 }
741 
742 static int rfkill_threeg_set(void *data, bool blocked)
743 {
744         int result = set_device_state(blocked ? "" : "1", 0,
745                         MSI_STANDARD_EC_3G_MASK);
746 
747         return min(result, 0);
748 }
749 
750 static const struct rfkill_ops rfkill_bluetooth_ops = {
751         .set_block = rfkill_bluetooth_set
752 };
753 
754 static const struct rfkill_ops rfkill_wlan_ops = {
755         .set_block = rfkill_wlan_set
756 };
757 
758 static const struct rfkill_ops rfkill_threeg_ops = {
759         .set_block = rfkill_threeg_set
760 };
761 
762 static void rfkill_cleanup(void)
763 {
764         if (rfk_bluetooth) {
765                 rfkill_unregister(rfk_bluetooth);
766                 rfkill_destroy(rfk_bluetooth);
767         }
768 
769         if (rfk_threeg) {
770                 rfkill_unregister(rfk_threeg);
771                 rfkill_destroy(rfk_threeg);
772         }
773 
774         if (rfk_wlan) {
775                 rfkill_unregister(rfk_wlan);
776                 rfkill_destroy(rfk_wlan);
777         }
778 }
779 
780 static bool msi_rfkill_set_state(struct rfkill *rfkill, bool blocked)
781 {
782         if (quirks->ec_read_only)
783                 return rfkill_set_hw_state(rfkill, blocked);
784         else
785                 return rfkill_set_sw_state(rfkill, blocked);
786 }
787 
788 static void msi_update_rfkill(struct work_struct *ignored)
789 {
790         get_wireless_state_ec_standard();
791 
792         if (rfk_wlan)
793                 msi_rfkill_set_state(rfk_wlan, !wlan_s);
794         if (rfk_bluetooth)
795                 msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
796         if (rfk_threeg)
797                 msi_rfkill_set_state(rfk_threeg, !threeg_s);
798 }
799 static DECLARE_DELAYED_WORK(msi_rfkill_dwork, msi_update_rfkill);
800 static DECLARE_WORK(msi_rfkill_work, msi_update_rfkill);
801 
802 static void msi_send_touchpad_key(struct work_struct *ignored)
803 {
804         u8 rdata;
805         int result;
806 
807         result = ec_read(MSI_STANDARD_EC_FUNCTIONS_ADDRESS, &rdata);
808         if (result < 0)
809                 return;
810 
811         sparse_keymap_report_event(msi_laptop_input_dev,
812                 (rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
813                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
814 }
815 static DECLARE_DELAYED_WORK(msi_touchpad_dwork, msi_send_touchpad_key);
816 static DECLARE_WORK(msi_touchpad_work, msi_send_touchpad_key);
817 
818 static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
819                                 struct serio *port)
820 {
821         static bool extended;
822 
823         if (str & I8042_STR_AUXDATA)
824                 return false;
825 
826         /* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
827         if (unlikely(data == 0xe0)) {
828                 extended = true;
829                 return false;
830         } else if (unlikely(extended)) {
831                 extended = false;
832                 switch (data) {
833                 case 0xE4:
834                         if (quirks->ec_delay) {
835                                 schedule_delayed_work(&msi_touchpad_dwork,
836                                         round_jiffies_relative(0.5 * HZ));
837                         } else
838                                 schedule_work(&msi_touchpad_work);
839                         break;
840                 case 0x54:
841                 case 0x62:
842                 case 0x76:
843                         if (quirks->ec_delay) {
844                                 schedule_delayed_work(&msi_rfkill_dwork,
845                                         round_jiffies_relative(0.5 * HZ));
846                         } else
847                                 schedule_work(&msi_rfkill_work);
848                         break;
849                 }
850         }
851 
852         return false;
853 }
854 
855 static void msi_init_rfkill(struct work_struct *ignored)
856 {
857         if (rfk_wlan) {
858                 rfkill_set_sw_state(rfk_wlan, !wlan_s);
859                 rfkill_wlan_set(NULL, !wlan_s);
860         }
861         if (rfk_bluetooth) {
862                 rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
863                 rfkill_bluetooth_set(NULL, !bluetooth_s);
864         }
865         if (rfk_threeg) {
866                 rfkill_set_sw_state(rfk_threeg, !threeg_s);
867                 rfkill_threeg_set(NULL, !threeg_s);
868         }
869 }
870 static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
871 
872 static int rfkill_init(struct platform_device *sdev)
873 {
874         /* add rfkill */
875         int retval;
876 
877         /* keep the hardware wireless state */
878         get_wireless_state_ec_standard();
879 
880         rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
881                                 RFKILL_TYPE_BLUETOOTH,
882                                 &rfkill_bluetooth_ops, NULL);
883         if (!rfk_bluetooth) {
884                 retval = -ENOMEM;
885                 goto err_bluetooth;
886         }
887         retval = rfkill_register(rfk_bluetooth);
888         if (retval)
889                 goto err_bluetooth;
890 
891         rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
892                                 &rfkill_wlan_ops, NULL);
893         if (!rfk_wlan) {
894                 retval = -ENOMEM;
895                 goto err_wlan;
896         }
897         retval = rfkill_register(rfk_wlan);
898         if (retval)
899                 goto err_wlan;
900 
901         if (threeg_exists) {
902                 rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
903                                 RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
904                 if (!rfk_threeg) {
905                         retval = -ENOMEM;
906                         goto err_threeg;
907                 }
908                 retval = rfkill_register(rfk_threeg);
909                 if (retval)
910                         goto err_threeg;
911         }
912 
913         /* schedule to run rfkill state initial */
914         if (quirks->ec_delay) {
915                 schedule_delayed_work(&msi_rfkill_init,
916                         round_jiffies_relative(1 * HZ));
917         } else
918                 schedule_work(&msi_rfkill_work);
919 
920         return 0;
921 
922 err_threeg:
923         rfkill_destroy(rfk_threeg);
924         if (rfk_wlan)
925                 rfkill_unregister(rfk_wlan);
926 err_wlan:
927         rfkill_destroy(rfk_wlan);
928         if (rfk_bluetooth)
929                 rfkill_unregister(rfk_bluetooth);
930 err_bluetooth:
931         rfkill_destroy(rfk_bluetooth);
932 
933         return retval;
934 }
935 
936 #ifdef CONFIG_PM_SLEEP
937 static int msi_laptop_resume(struct device *device)
938 {
939         u8 data;
940         int result;
941 
942         if (!quirks->load_scm_model)
943                 return 0;
944 
945         /* set load SCM to disable hardware control by fn key */
946         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
947         if (result < 0)
948                 return result;
949 
950         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
951                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
952         if (result < 0)
953                 return result;
954 
955         return 0;
956 }
957 #endif
958 
959 static int __init msi_laptop_input_setup(void)
960 {
961         int err;
962 
963         msi_laptop_input_dev = input_allocate_device();
964         if (!msi_laptop_input_dev)
965                 return -ENOMEM;
966 
967         msi_laptop_input_dev->name = "MSI Laptop hotkeys";
968         msi_laptop_input_dev->phys = "msi-laptop/input0";
969         msi_laptop_input_dev->id.bustype = BUS_HOST;
970 
971         err = sparse_keymap_setup(msi_laptop_input_dev,
972                 msi_laptop_keymap, NULL);
973         if (err)
974                 goto err_free_dev;
975 
976         err = input_register_device(msi_laptop_input_dev);
977         if (err)
978                 goto err_free_keymap;
979 
980         return 0;
981 
982 err_free_keymap:
983         sparse_keymap_free(msi_laptop_input_dev);
984 err_free_dev:
985         input_free_device(msi_laptop_input_dev);
986         return err;
987 }
988 
989 static void msi_laptop_input_destroy(void)
990 {
991         sparse_keymap_free(msi_laptop_input_dev);
992         input_unregister_device(msi_laptop_input_dev);
993 }
994 
995 static int __init load_scm_model_init(struct platform_device *sdev)
996 {
997         u8 data;
998         int result;
999 
1000         if (!quirks->ec_read_only) {
1001                 /* allow userland write sysfs file  */
1002                 dev_attr_bluetooth.store = store_bluetooth;
1003                 dev_attr_wlan.store = store_wlan;
1004                 dev_attr_threeg.store = store_threeg;
1005                 dev_attr_bluetooth.attr.mode |= S_IWUSR;
1006                 dev_attr_wlan.attr.mode |= S_IWUSR;
1007                 dev_attr_threeg.attr.mode |= S_IWUSR;
1008         }
1009 
1010         /* disable hardware control by fn key */
1011         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
1012         if (result < 0)
1013                 return result;
1014 
1015         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
1016                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
1017         if (result < 0)
1018                 return result;
1019 
1020         /* initial rfkill */
1021         result = rfkill_init(sdev);
1022         if (result < 0)
1023                 goto fail_rfkill;
1024 
1025         /* setup input device */
1026         result = msi_laptop_input_setup();
1027         if (result)
1028                 goto fail_input;
1029 
1030         result = i8042_install_filter(msi_laptop_i8042_filter);
1031         if (result) {
1032                 pr_err("Unable to install key filter\n");
1033                 goto fail_filter;
1034         }
1035 
1036         return 0;
1037 
1038 fail_filter:
1039         msi_laptop_input_destroy();
1040 
1041 fail_input:
1042         rfkill_cleanup();
1043 
1044 fail_rfkill:
1045 
1046         return result;
1047 
1048 }
1049 
1050 static int __init msi_init(void)
1051 {
1052         int ret;
1053 
1054         if (acpi_disabled)
1055                 return -ENODEV;
1056 
1057         dmi_check_system(msi_dmi_table);
1058         if (!quirks)
1059                 /* quirks may be NULL if no match in DMI table */
1060                 quirks = &quirk_load_scm_model;
1061         if (force)
1062                 quirks = &quirk_old_ec_model;
1063 
1064         if (!quirks->old_ec_model)
1065                 get_threeg_exists();
1066 
1067         if (auto_brightness < 0 || auto_brightness > 2)
1068                 return -EINVAL;
1069 
1070         /* Register backlight stuff */
1071 
1072         if (!quirks->old_ec_model || acpi_video_backlight_support()) {
1073                 pr_info("Brightness ignored, must be controlled by ACPI video driver\n");
1074         } else {
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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