Merge tag 'vfio-for-v3.6-rc1' of git://github.com/awilliam/linux-vfio
[platform/adaptation/renesas_rcar/renesas_kernel.git] / 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_TOUCHPAD_ADDRESS        0xe4
86 #define MSI_STANDARD_EC_TOUCHPAD_MASK           (1 << 4)
87
88 #ifdef CONFIG_PM_SLEEP
89 static int msi_laptop_resume(struct device *device);
90 #endif
91 static SIMPLE_DEV_PM_OPS(msi_laptop_pm, NULL, msi_laptop_resume);
92
93 #define MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS  0x2f
94
95 static bool force;
96 module_param(force, bool, 0);
97 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
98
99 static int auto_brightness;
100 module_param(auto_brightness, int, 0);
101 MODULE_PARM_DESC(auto_brightness, "Enable automatic brightness control (0: disabled; 1: enabled; 2: don't touch)");
102
103 static const struct key_entry msi_laptop_keymap[] = {
104         {KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },  /* Touch Pad On */
105         {KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },/* Touch Pad On */
106         {KE_END, 0}
107 };
108
109 static struct input_dev *msi_laptop_input_dev;
110
111 static bool old_ec_model;
112 static int wlan_s, bluetooth_s, threeg_s;
113 static int threeg_exists;
114
115 /* Some MSI 3G netbook only have one fn key to control Wlan/Bluetooth/3G,
116  * those netbook will load the SCM (windows app) to disable the original
117  * Wlan/Bluetooth control by BIOS when user press fn key, then control
118  * Wlan/Bluetooth/3G by SCM (software control by OS). Without SCM, user
119  * cann't on/off 3G module on those 3G netbook.
120  * On Linux, msi-laptop driver will do the same thing to disable the
121  * original BIOS control, then might need use HAL or other userland
122  * application to do the software control that simulate with SCM.
123  * e.g. MSI N034 netbook
124  */
125 static bool load_scm_model;
126 static struct rfkill *rfk_wlan, *rfk_bluetooth, *rfk_threeg;
127
128 /* Hardware access */
129
130 static int set_lcd_level(int level)
131 {
132         u8 buf[2];
133
134         if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
135                 return -EINVAL;
136
137         buf[0] = 0x80;
138         buf[1] = (u8) (level*31);
139
140         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf),
141                               NULL, 0);
142 }
143
144 static int get_lcd_level(void)
145 {
146         u8 wdata = 0, rdata;
147         int result;
148
149         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
150                                 &rdata, 1);
151         if (result < 0)
152                 return result;
153
154         return (int) rdata / 31;
155 }
156
157 static int get_auto_brightness(void)
158 {
159         u8 wdata = 4, rdata;
160         int result;
161
162         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1,
163                                 &rdata, 1);
164         if (result < 0)
165                 return result;
166
167         return !!(rdata & 8);
168 }
169
170 static int set_auto_brightness(int enable)
171 {
172         u8 wdata[2], rdata;
173         int result;
174
175         wdata[0] = 4;
176
177         result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1,
178                                 &rdata, 1);
179         if (result < 0)
180                 return result;
181
182         wdata[0] = 0x84;
183         wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
184
185         return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2,
186                               NULL, 0);
187 }
188
189 static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
190 {
191         int status;
192         u8 wdata = 0, rdata;
193         int result;
194
195         if (sscanf(buf, "%i", &status) != 1 || (status < 0 || status > 1))
196                 return -EINVAL;
197
198         /* read current device state */
199         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
200         if (result < 0)
201                 return -EINVAL;
202
203         if (!!(rdata & mask) != status) {
204                 /* reverse device bit */
205                 if (rdata & mask)
206                         wdata = rdata & ~mask;
207                 else
208                         wdata = rdata | mask;
209
210                 result = ec_write(MSI_STANDARD_EC_COMMAND_ADDRESS, wdata);
211                 if (result < 0)
212                         return -EINVAL;
213         }
214
215         return count;
216 }
217
218 static int get_wireless_state(int *wlan, int *bluetooth)
219 {
220         u8 wdata = 0, rdata;
221         int result;
222
223         result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1);
224         if (result < 0)
225                 return -1;
226
227         if (wlan)
228                 *wlan = !!(rdata & 8);
229
230         if (bluetooth)
231                 *bluetooth = !!(rdata & 128);
232
233         return 0;
234 }
235
236 static int get_wireless_state_ec_standard(void)
237 {
238         u8 rdata;
239         int result;
240
241         result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
242         if (result < 0)
243                 return -1;
244
245         wlan_s = !!(rdata & MSI_STANDARD_EC_WLAN_MASK);
246
247         bluetooth_s = !!(rdata & MSI_STANDARD_EC_BLUETOOTH_MASK);
248
249         threeg_s = !!(rdata & MSI_STANDARD_EC_3G_MASK);
250
251         return 0;
252 }
253
254 static int get_threeg_exists(void)
255 {
256         u8 rdata;
257         int result;
258
259         result = ec_read(MSI_STANDARD_EC_DEVICES_EXISTS_ADDRESS, &rdata);
260         if (result < 0)
261                 return -1;
262
263         threeg_exists = !!(rdata & MSI_STANDARD_EC_3G_MASK);
264
265         return 0;
266 }
267
268 /* Backlight device stuff */
269
270 static int bl_get_brightness(struct backlight_device *b)
271 {
272         return get_lcd_level();
273 }
274
275
276 static int bl_update_status(struct backlight_device *b)
277 {
278         return set_lcd_level(b->props.brightness);
279 }
280
281 static const struct backlight_ops msibl_ops = {
282         .get_brightness = bl_get_brightness,
283         .update_status  = bl_update_status,
284 };
285
286 static struct backlight_device *msibl_device;
287
288 /* Platform device */
289
290 static ssize_t show_wlan(struct device *dev,
291         struct device_attribute *attr, char *buf)
292 {
293
294         int ret, enabled;
295
296         if (old_ec_model) {
297                 ret = get_wireless_state(&enabled, NULL);
298         } else {
299                 ret = get_wireless_state_ec_standard();
300                 enabled = wlan_s;
301         }
302         if (ret < 0)
303                 return ret;
304
305         return sprintf(buf, "%i\n", enabled);
306 }
307
308 static ssize_t store_wlan(struct device *dev,
309         struct device_attribute *attr, const char *buf, size_t count)
310 {
311         return set_device_state(buf, count, MSI_STANDARD_EC_WLAN_MASK);
312 }
313
314 static ssize_t show_bluetooth(struct device *dev,
315         struct device_attribute *attr, char *buf)
316 {
317
318         int ret, enabled;
319
320         if (old_ec_model) {
321                 ret = get_wireless_state(NULL, &enabled);
322         } else {
323                 ret = get_wireless_state_ec_standard();
324                 enabled = bluetooth_s;
325         }
326         if (ret < 0)
327                 return ret;
328
329         return sprintf(buf, "%i\n", enabled);
330 }
331
332 static ssize_t store_bluetooth(struct device *dev,
333         struct device_attribute *attr, const char *buf, size_t count)
334 {
335         return set_device_state(buf, count, MSI_STANDARD_EC_BLUETOOTH_MASK);
336 }
337
338 static ssize_t show_threeg(struct device *dev,
339         struct device_attribute *attr, char *buf)
340 {
341
342         int ret;
343
344         /* old msi ec not support 3G */
345         if (old_ec_model)
346                 return -1;
347
348         ret = get_wireless_state_ec_standard();
349         if (ret < 0)
350                 return ret;
351
352         return sprintf(buf, "%i\n", threeg_s);
353 }
354
355 static ssize_t store_threeg(struct device *dev,
356         struct device_attribute *attr, const char *buf, size_t count)
357 {
358         return set_device_state(buf, count, MSI_STANDARD_EC_3G_MASK);
359 }
360
361 static ssize_t show_lcd_level(struct device *dev,
362         struct device_attribute *attr, char *buf)
363 {
364
365         int ret;
366
367         ret = get_lcd_level();
368         if (ret < 0)
369                 return ret;
370
371         return sprintf(buf, "%i\n", ret);
372 }
373
374 static ssize_t store_lcd_level(struct device *dev,
375         struct device_attribute *attr, const char *buf, size_t count)
376 {
377
378         int level, ret;
379
380         if (sscanf(buf, "%i", &level) != 1 ||
381             (level < 0 || level >= MSI_LCD_LEVEL_MAX))
382                 return -EINVAL;
383
384         ret = set_lcd_level(level);
385         if (ret < 0)
386                 return ret;
387
388         return count;
389 }
390
391 static ssize_t show_auto_brightness(struct device *dev,
392         struct device_attribute *attr, char *buf)
393 {
394
395         int ret;
396
397         ret = get_auto_brightness();
398         if (ret < 0)
399                 return ret;
400
401         return sprintf(buf, "%i\n", ret);
402 }
403
404 static ssize_t store_auto_brightness(struct device *dev,
405         struct device_attribute *attr, const char *buf, size_t count)
406 {
407
408         int enable, ret;
409
410         if (sscanf(buf, "%i", &enable) != 1 || (enable != (enable & 1)))
411                 return -EINVAL;
412
413         ret = set_auto_brightness(enable);
414         if (ret < 0)
415                 return ret;
416
417         return count;
418 }
419
420 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
421 static DEVICE_ATTR(auto_brightness, 0644, show_auto_brightness,
422                    store_auto_brightness);
423 static DEVICE_ATTR(bluetooth, 0444, show_bluetooth, NULL);
424 static DEVICE_ATTR(wlan, 0444, show_wlan, NULL);
425 static DEVICE_ATTR(threeg, 0444, show_threeg, NULL);
426
427 static struct attribute *msipf_attributes[] = {
428         &dev_attr_lcd_level.attr,
429         &dev_attr_auto_brightness.attr,
430         &dev_attr_bluetooth.attr,
431         &dev_attr_wlan.attr,
432         NULL
433 };
434
435 static struct attribute_group msipf_attribute_group = {
436         .attrs = msipf_attributes
437 };
438
439 static struct platform_driver msipf_driver = {
440         .driver = {
441                 .name = "msi-laptop-pf",
442                 .owner = THIS_MODULE,
443                 .pm = &msi_laptop_pm,
444         },
445 };
446
447 static struct platform_device *msipf_device;
448
449 /* Initialization */
450
451 static int dmi_check_cb(const struct dmi_system_id *id)
452 {
453         pr_info("Identified laptop model '%s'\n", id->ident);
454         return 1;
455 }
456
457 static struct dmi_system_id __initdata msi_dmi_table[] = {
458         {
459                 .ident = "MSI S270",
460                 .matches = {
461                         DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD"),
462                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1013"),
463                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
464                         DMI_MATCH(DMI_CHASSIS_VENDOR,
465                                   "MICRO-STAR INT'L CO.,LTD")
466                 },
467                 .callback = dmi_check_cb
468         },
469         {
470                 .ident = "MSI S271",
471                 .matches = {
472                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
473                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1058"),
474                         DMI_MATCH(DMI_PRODUCT_VERSION, "0581"),
475                         DMI_MATCH(DMI_BOARD_NAME, "MS-1058")
476                 },
477                 .callback = dmi_check_cb
478         },
479         {
480                 .ident = "MSI S420",
481                 .matches = {
482                         DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
483                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-1412"),
484                         DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
485                         DMI_MATCH(DMI_BOARD_NAME, "MS-1412")
486                 },
487                 .callback = dmi_check_cb
488         },
489         {
490                 .ident = "Medion MD96100",
491                 .matches = {
492                         DMI_MATCH(DMI_SYS_VENDOR, "NOTEBOOK"),
493                         DMI_MATCH(DMI_PRODUCT_NAME, "SAM2000"),
494                         DMI_MATCH(DMI_PRODUCT_VERSION, "0131"),
495                         DMI_MATCH(DMI_CHASSIS_VENDOR,
496                                   "MICRO-STAR INT'L CO.,LTD")
497                 },
498                 .callback = dmi_check_cb
499         },
500         { }
501 };
502
503 static struct dmi_system_id __initdata msi_load_scm_models_dmi_table[] = {
504         {
505                 .ident = "MSI N034",
506                 .matches = {
507                         DMI_MATCH(DMI_SYS_VENDOR,
508                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
509                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N034"),
510                         DMI_MATCH(DMI_CHASSIS_VENDOR,
511                         "MICRO-STAR INTERNATIONAL CO., LTD")
512                 },
513                 .callback = dmi_check_cb
514         },
515         {
516                 .ident = "MSI N051",
517                 .matches = {
518                         DMI_MATCH(DMI_SYS_VENDOR,
519                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
520                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N051"),
521                         DMI_MATCH(DMI_CHASSIS_VENDOR,
522                         "MICRO-STAR INTERNATIONAL CO., LTD")
523                 },
524                 .callback = dmi_check_cb
525         },
526         {
527                 .ident = "MSI N014",
528                 .matches = {
529                         DMI_MATCH(DMI_SYS_VENDOR,
530                                 "MICRO-STAR INTERNATIONAL CO., LTD"),
531                         DMI_MATCH(DMI_PRODUCT_NAME, "MS-N014"),
532                 },
533                 .callback = dmi_check_cb
534         },
535         {
536                 .ident = "MSI CR620",
537                 .matches = {
538                         DMI_MATCH(DMI_SYS_VENDOR,
539                                 "Micro-Star International"),
540                         DMI_MATCH(DMI_PRODUCT_NAME, "CR620"),
541                 },
542                 .callback = dmi_check_cb
543         },
544         {
545                 .ident = "MSI U270",
546                 .matches = {
547                         DMI_MATCH(DMI_SYS_VENDOR,
548                                 "Micro-Star International Co., Ltd."),
549                         DMI_MATCH(DMI_PRODUCT_NAME, "U270 series"),
550                 },
551                 .callback = dmi_check_cb
552         },
553         { }
554 };
555
556 static int rfkill_bluetooth_set(void *data, bool blocked)
557 {
558         /* Do something with blocked...*/
559         /*
560          * blocked == false is on
561          * blocked == true is off
562          */
563         if (blocked)
564                 set_device_state("0", 0, MSI_STANDARD_EC_BLUETOOTH_MASK);
565         else
566                 set_device_state("1", 0, MSI_STANDARD_EC_BLUETOOTH_MASK);
567
568         return 0;
569 }
570
571 static int rfkill_wlan_set(void *data, bool blocked)
572 {
573         if (blocked)
574                 set_device_state("0", 0, MSI_STANDARD_EC_WLAN_MASK);
575         else
576                 set_device_state("1", 0, MSI_STANDARD_EC_WLAN_MASK);
577
578         return 0;
579 }
580
581 static int rfkill_threeg_set(void *data, bool blocked)
582 {
583         if (blocked)
584                 set_device_state("0", 0, MSI_STANDARD_EC_3G_MASK);
585         else
586                 set_device_state("1", 0, MSI_STANDARD_EC_3G_MASK);
587
588         return 0;
589 }
590
591 static const struct rfkill_ops rfkill_bluetooth_ops = {
592         .set_block = rfkill_bluetooth_set
593 };
594
595 static const struct rfkill_ops rfkill_wlan_ops = {
596         .set_block = rfkill_wlan_set
597 };
598
599 static const struct rfkill_ops rfkill_threeg_ops = {
600         .set_block = rfkill_threeg_set
601 };
602
603 static void rfkill_cleanup(void)
604 {
605         if (rfk_bluetooth) {
606                 rfkill_unregister(rfk_bluetooth);
607                 rfkill_destroy(rfk_bluetooth);
608         }
609
610         if (rfk_threeg) {
611                 rfkill_unregister(rfk_threeg);
612                 rfkill_destroy(rfk_threeg);
613         }
614
615         if (rfk_wlan) {
616                 rfkill_unregister(rfk_wlan);
617                 rfkill_destroy(rfk_wlan);
618         }
619 }
620
621 static void msi_update_rfkill(struct work_struct *ignored)
622 {
623         get_wireless_state_ec_standard();
624
625         if (rfk_wlan)
626                 rfkill_set_sw_state(rfk_wlan, !wlan_s);
627         if (rfk_bluetooth)
628                 rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
629         if (rfk_threeg)
630                 rfkill_set_sw_state(rfk_threeg, !threeg_s);
631 }
632 static DECLARE_DELAYED_WORK(msi_rfkill_work, msi_update_rfkill);
633
634 static void msi_send_touchpad_key(struct work_struct *ignored)
635 {
636         u8 rdata;
637         int result;
638
639         result = ec_read(MSI_STANDARD_EC_TOUCHPAD_ADDRESS, &rdata);
640         if (result < 0)
641                 return;
642
643         sparse_keymap_report_event(msi_laptop_input_dev,
644                 (rdata & MSI_STANDARD_EC_TOUCHPAD_MASK) ?
645                 KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF, 1, true);
646 }
647 static DECLARE_DELAYED_WORK(msi_touchpad_work, msi_send_touchpad_key);
648
649 static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
650                                 struct serio *port)
651 {
652         static bool extended;
653
654         if (str & 0x20)
655                 return false;
656
657         /* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
658         if (unlikely(data == 0xe0)) {
659                 extended = true;
660                 return false;
661         } else if (unlikely(extended)) {
662                 extended = false;
663                 switch (data) {
664                 case 0xE4:
665                         schedule_delayed_work(&msi_touchpad_work,
666                                 round_jiffies_relative(0.5 * HZ));
667                         break;
668                 case 0x54:
669                 case 0x62:
670                 case 0x76:
671                         schedule_delayed_work(&msi_rfkill_work,
672                                 round_jiffies_relative(0.5 * HZ));
673                         break;
674                 }
675         }
676
677         return false;
678 }
679
680 static void msi_init_rfkill(struct work_struct *ignored)
681 {
682         if (rfk_wlan) {
683                 rfkill_set_sw_state(rfk_wlan, !wlan_s);
684                 rfkill_wlan_set(NULL, !wlan_s);
685         }
686         if (rfk_bluetooth) {
687                 rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
688                 rfkill_bluetooth_set(NULL, !bluetooth_s);
689         }
690         if (rfk_threeg) {
691                 rfkill_set_sw_state(rfk_threeg, !threeg_s);
692                 rfkill_threeg_set(NULL, !threeg_s);
693         }
694 }
695 static DECLARE_DELAYED_WORK(msi_rfkill_init, msi_init_rfkill);
696
697 static int rfkill_init(struct platform_device *sdev)
698 {
699         /* add rfkill */
700         int retval;
701
702         /* keep the hardware wireless state */
703         get_wireless_state_ec_standard();
704
705         rfk_bluetooth = rfkill_alloc("msi-bluetooth", &sdev->dev,
706                                 RFKILL_TYPE_BLUETOOTH,
707                                 &rfkill_bluetooth_ops, NULL);
708         if (!rfk_bluetooth) {
709                 retval = -ENOMEM;
710                 goto err_bluetooth;
711         }
712         retval = rfkill_register(rfk_bluetooth);
713         if (retval)
714                 goto err_bluetooth;
715
716         rfk_wlan = rfkill_alloc("msi-wlan", &sdev->dev, RFKILL_TYPE_WLAN,
717                                 &rfkill_wlan_ops, NULL);
718         if (!rfk_wlan) {
719                 retval = -ENOMEM;
720                 goto err_wlan;
721         }
722         retval = rfkill_register(rfk_wlan);
723         if (retval)
724                 goto err_wlan;
725
726         if (threeg_exists) {
727                 rfk_threeg = rfkill_alloc("msi-threeg", &sdev->dev,
728                                 RFKILL_TYPE_WWAN, &rfkill_threeg_ops, NULL);
729                 if (!rfk_threeg) {
730                         retval = -ENOMEM;
731                         goto err_threeg;
732                 }
733                 retval = rfkill_register(rfk_threeg);
734                 if (retval)
735                         goto err_threeg;
736         }
737
738         /* schedule to run rfkill state initial */
739         schedule_delayed_work(&msi_rfkill_init,
740                                 round_jiffies_relative(1 * HZ));
741
742         return 0;
743
744 err_threeg:
745         rfkill_destroy(rfk_threeg);
746         if (rfk_wlan)
747                 rfkill_unregister(rfk_wlan);
748 err_wlan:
749         rfkill_destroy(rfk_wlan);
750         if (rfk_bluetooth)
751                 rfkill_unregister(rfk_bluetooth);
752 err_bluetooth:
753         rfkill_destroy(rfk_bluetooth);
754
755         return retval;
756 }
757
758 #ifdef CONFIG_PM_SLEEP
759 static int msi_laptop_resume(struct device *device)
760 {
761         u8 data;
762         int result;
763
764         if (!load_scm_model)
765                 return 0;
766
767         /* set load SCM to disable hardware control by fn key */
768         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
769         if (result < 0)
770                 return result;
771
772         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
773                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
774         if (result < 0)
775                 return result;
776
777         return 0;
778 }
779 #endif
780
781 static int __init msi_laptop_input_setup(void)
782 {
783         int err;
784
785         msi_laptop_input_dev = input_allocate_device();
786         if (!msi_laptop_input_dev)
787                 return -ENOMEM;
788
789         msi_laptop_input_dev->name = "MSI Laptop hotkeys";
790         msi_laptop_input_dev->phys = "msi-laptop/input0";
791         msi_laptop_input_dev->id.bustype = BUS_HOST;
792
793         err = sparse_keymap_setup(msi_laptop_input_dev,
794                 msi_laptop_keymap, NULL);
795         if (err)
796                 goto err_free_dev;
797
798         err = input_register_device(msi_laptop_input_dev);
799         if (err)
800                 goto err_free_keymap;
801
802         return 0;
803
804 err_free_keymap:
805         sparse_keymap_free(msi_laptop_input_dev);
806 err_free_dev:
807         input_free_device(msi_laptop_input_dev);
808         return err;
809 }
810
811 static void msi_laptop_input_destroy(void)
812 {
813         sparse_keymap_free(msi_laptop_input_dev);
814         input_unregister_device(msi_laptop_input_dev);
815 }
816
817 static int __init load_scm_model_init(struct platform_device *sdev)
818 {
819         u8 data;
820         int result;
821
822         /* allow userland write sysfs file  */
823         dev_attr_bluetooth.store = store_bluetooth;
824         dev_attr_wlan.store = store_wlan;
825         dev_attr_threeg.store = store_threeg;
826         dev_attr_bluetooth.attr.mode |= S_IWUSR;
827         dev_attr_wlan.attr.mode |= S_IWUSR;
828         dev_attr_threeg.attr.mode |= S_IWUSR;
829
830         /* disable hardware control by fn key */
831         result = ec_read(MSI_STANDARD_EC_SCM_LOAD_ADDRESS, &data);
832         if (result < 0)
833                 return result;
834
835         result = ec_write(MSI_STANDARD_EC_SCM_LOAD_ADDRESS,
836                 data | MSI_STANDARD_EC_SCM_LOAD_MASK);
837         if (result < 0)
838                 return result;
839
840         /* initial rfkill */
841         result = rfkill_init(sdev);
842         if (result < 0)
843                 goto fail_rfkill;
844
845         /* setup input device */
846         result = msi_laptop_input_setup();
847         if (result)
848                 goto fail_input;
849
850         result = i8042_install_filter(msi_laptop_i8042_filter);
851         if (result) {
852                 pr_err("Unable to install key filter\n");
853                 goto fail_filter;
854         }
855
856         return 0;
857
858 fail_filter:
859         msi_laptop_input_destroy();
860
861 fail_input:
862         rfkill_cleanup();
863
864 fail_rfkill:
865
866         return result;
867
868 }
869
870 static int __init msi_init(void)
871 {
872         int ret;
873
874         if (acpi_disabled)
875                 return -ENODEV;
876
877         if (force || dmi_check_system(msi_dmi_table))
878                 old_ec_model = 1;
879
880         if (!old_ec_model)
881                 get_threeg_exists();
882
883         if (!old_ec_model && dmi_check_system(msi_load_scm_models_dmi_table))
884                 load_scm_model = 1;
885
886         if (auto_brightness < 0 || auto_brightness > 2)
887                 return -EINVAL;
888
889         /* Register backlight stuff */
890
891         if (acpi_video_backlight_support()) {
892                 pr_info("Brightness ignored, must be controlled by ACPI video driver\n");
893         } else {
894                 struct backlight_properties props;
895                 memset(&props, 0, sizeof(struct backlight_properties));
896                 props.type = BACKLIGHT_PLATFORM;
897                 props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
898                 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
899                                                          NULL, &msibl_ops,
900                                                          &props);
901                 if (IS_ERR(msibl_device))
902                         return PTR_ERR(msibl_device);
903         }
904
905         ret = platform_driver_register(&msipf_driver);
906         if (ret)
907                 goto fail_backlight;
908
909         /* Register platform stuff */
910
911         msipf_device = platform_device_alloc("msi-laptop-pf", -1);
912         if (!msipf_device) {
913                 ret = -ENOMEM;
914                 goto fail_platform_driver;
915         }
916
917         ret = platform_device_add(msipf_device);
918         if (ret)
919                 goto fail_platform_device1;
920
921         if (load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
922                 ret = -EINVAL;
923                 goto fail_platform_device1;
924         }
925
926         ret = sysfs_create_group(&msipf_device->dev.kobj,
927                                  &msipf_attribute_group);
928         if (ret)
929                 goto fail_platform_device2;
930
931         if (!old_ec_model) {
932                 if (threeg_exists)
933                         ret = device_create_file(&msipf_device->dev,
934                                                 &dev_attr_threeg);
935                 if (ret)
936                         goto fail_platform_device2;
937         }
938
939         /* Disable automatic brightness control by default because
940          * this module was probably loaded to do brightness control in
941          * software. */
942
943         if (auto_brightness != 2)
944                 set_auto_brightness(auto_brightness);
945
946         pr_info("driver " MSI_DRIVER_VERSION " successfully loaded\n");
947
948         return 0;
949
950 fail_platform_device2:
951
952         if (load_scm_model) {
953                 i8042_remove_filter(msi_laptop_i8042_filter);
954                 cancel_delayed_work_sync(&msi_rfkill_work);
955                 rfkill_cleanup();
956         }
957         platform_device_del(msipf_device);
958
959 fail_platform_device1:
960
961         platform_device_put(msipf_device);
962
963 fail_platform_driver:
964
965         platform_driver_unregister(&msipf_driver);
966
967 fail_backlight:
968
969         backlight_device_unregister(msibl_device);
970
971         return ret;
972 }
973
974 static void __exit msi_cleanup(void)
975 {
976         if (load_scm_model) {
977                 i8042_remove_filter(msi_laptop_i8042_filter);
978                 msi_laptop_input_destroy();
979                 cancel_delayed_work_sync(&msi_rfkill_work);
980                 rfkill_cleanup();
981         }
982
983         sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
984         if (!old_ec_model && threeg_exists)
985                 device_remove_file(&msipf_device->dev, &dev_attr_threeg);
986         platform_device_unregister(msipf_device);
987         platform_driver_unregister(&msipf_driver);
988         backlight_device_unregister(msibl_device);
989
990         /* Enable automatic brightness control again */
991         if (auto_brightness != 2)
992                 set_auto_brightness(1);
993
994         pr_info("driver unloaded\n");
995 }
996
997 module_init(msi_init);
998 module_exit(msi_cleanup);
999
1000 MODULE_AUTHOR("Lennart Poettering");
1001 MODULE_DESCRIPTION("MSI Laptop Support");
1002 MODULE_VERSION(MSI_DRIVER_VERSION);
1003 MODULE_LICENSE("GPL");
1004
1005 MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1006 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
1007 MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1008 MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
1009 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N034:*");
1010 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N051:*");
1011 MODULE_ALIAS("dmi:*:svnMICRO-STARINTERNATIONAL*:pnMS-N014:*");
1012 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnCR620:*");
1013 MODULE_ALIAS("dmi:*:svnMicro-StarInternational*:pnU270series:*");