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Linux/drivers/platform/x86/toshiba_acpi.c

  1 /*
  2  *  toshiba_acpi.c - Toshiba Laptop ACPI Extras
  3  *
  4  *  Copyright (C) 2002-2004 John Belmonte
  5  *  Copyright (C) 2008 Philip Langdale
  6  *  Copyright (C) 2010 Pierre Ducroquet
  7  *  Copyright (C) 2014-2016 Azael Avalos
  8  *
  9  *  This program is free software; you can redistribute it and/or modify
 10  *  it under the terms of the GNU General Public License as published by
 11  *  the Free Software Foundation; either version 2 of the License, or
 12  *  (at your option) any later version.
 13  *
 14  *  This program is distributed in the hope that it will be useful,
 15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17  *  GNU General Public License for more details.
 18  *
 19  *  The full GNU General Public License is included in this distribution in
 20  *  the file called "COPYING".
 21  *
 22  *  The devolpment page for this driver is located at
 23  *  http://memebeam.org/toys/ToshibaAcpiDriver.
 24  *
 25  *  Credits:
 26  *      Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
 27  *              engineering the Windows drivers
 28  *      Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
 29  *      Rob Miller - TV out and hotkeys help
 30  */
 31 
 32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 33 
 34 #define TOSHIBA_ACPI_VERSION    "0.24"
 35 #define PROC_INTERFACE_VERSION  1
 36 
 37 #include <linux/kernel.h>
 38 #include <linux/module.h>
 39 #include <linux/moduleparam.h>
 40 #include <linux/init.h>
 41 #include <linux/types.h>
 42 #include <linux/proc_fs.h>
 43 #include <linux/seq_file.h>
 44 #include <linux/backlight.h>
 45 #include <linux/input.h>
 46 #include <linux/input/sparse-keymap.h>
 47 #include <linux/leds.h>
 48 #include <linux/slab.h>
 49 #include <linux/workqueue.h>
 50 #include <linux/i8042.h>
 51 #include <linux/acpi.h>
 52 #include <linux/dmi.h>
 53 #include <linux/uaccess.h>
 54 #include <linux/miscdevice.h>
 55 #include <linux/rfkill.h>
 56 #include <linux/iio/iio.h>
 57 #include <linux/toshiba.h>
 58 #include <acpi/video.h>
 59 
 60 MODULE_AUTHOR("John Belmonte");
 61 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
 62 MODULE_LICENSE("GPL");
 63 
 64 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
 65 
 66 /* Scan code for Fn key on TOS1900 models */
 67 #define TOS1900_FN_SCAN         0x6e
 68 
 69 /* Toshiba ACPI method paths */
 70 #define METHOD_VIDEO_OUT        "\\_SB_.VALX.DSSX"
 71 
 72 /*
 73  * The Toshiba configuration interface is composed of the HCI and the SCI,
 74  * which are defined as follows:
 75  *
 76  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
 77  * be uniform across all their models.  Ideally we would just call
 78  * dedicated ACPI methods instead of using this primitive interface.
 79  * However the ACPI methods seem to be incomplete in some areas (for
 80  * example they allow setting, but not reading, the LCD brightness value),
 81  * so this is still useful.
 82  *
 83  * SCI stands for "System Configuration Interface" which aim is to
 84  * conceal differences in hardware between different models.
 85  */
 86 
 87 #define TCI_WORDS                       6
 88 
 89 /* Operations */
 90 #define HCI_SET                         0xff00
 91 #define HCI_GET                         0xfe00
 92 #define SCI_OPEN                        0xf100
 93 #define SCI_CLOSE                       0xf200
 94 #define SCI_GET                         0xf300
 95 #define SCI_SET                         0xf400
 96 
 97 /* Return codes */
 98 #define TOS_SUCCESS                     0x0000
 99 #define TOS_SUCCESS2                    0x0001
100 #define TOS_OPEN_CLOSE_OK               0x0044
101 #define TOS_FAILURE                     0x1000
102 #define TOS_NOT_SUPPORTED               0x8000
103 #define TOS_ALREADY_OPEN                0x8100
104 #define TOS_NOT_OPENED                  0x8200
105 #define TOS_INPUT_DATA_ERROR            0x8300
106 #define TOS_WRITE_PROTECTED             0x8400
107 #define TOS_NOT_PRESENT                 0x8600
108 #define TOS_FIFO_EMPTY                  0x8c00
109 #define TOS_DATA_NOT_AVAILABLE          0x8d20
110 #define TOS_NOT_INITIALIZED             0x8d50
111 #define TOS_NOT_INSTALLED               0x8e00
112 
113 /* Registers */
114 #define HCI_FAN                         0x0004
115 #define HCI_TR_BACKLIGHT                0x0005
116 #define HCI_SYSTEM_EVENT                0x0016
117 #define HCI_VIDEO_OUT                   0x001c
118 #define HCI_HOTKEY_EVENT                0x001e
119 #define HCI_LCD_BRIGHTNESS              0x002a
120 #define HCI_WIRELESS                    0x0056
121 #define HCI_ACCELEROMETER               0x006d
122 #define HCI_COOLING_METHOD              0x007f
123 #define HCI_KBD_ILLUMINATION            0x0095
124 #define HCI_ECO_MODE                    0x0097
125 #define HCI_ACCELEROMETER2              0x00a6
126 #define HCI_SYSTEM_INFO                 0xc000
127 #define SCI_PANEL_POWER_ON              0x010d
128 #define SCI_ILLUMINATION                0x014e
129 #define SCI_USB_SLEEP_CHARGE            0x0150
130 #define SCI_KBD_ILLUM_STATUS            0x015c
131 #define SCI_USB_SLEEP_MUSIC             0x015e
132 #define SCI_USB_THREE                   0x0169
133 #define SCI_TOUCHPAD                    0x050e
134 #define SCI_KBD_FUNCTION_KEYS           0x0522
135 
136 /* Field definitions */
137 #define HCI_ACCEL_MASK                  0x7fff
138 #define HCI_ACCEL_DIRECTION_MASK        0x8000
139 #define HCI_HOTKEY_DISABLE              0x0b
140 #define HCI_HOTKEY_ENABLE               0x09
141 #define HCI_HOTKEY_SPECIAL_FUNCTIONS    0x10
142 #define HCI_LCD_BRIGHTNESS_BITS         3
143 #define HCI_LCD_BRIGHTNESS_SHIFT        (16-HCI_LCD_BRIGHTNESS_BITS)
144 #define HCI_LCD_BRIGHTNESS_LEVELS       (1 << HCI_LCD_BRIGHTNESS_BITS)
145 #define HCI_MISC_SHIFT                  0x10
146 #define HCI_SYSTEM_TYPE1                0x10
147 #define HCI_SYSTEM_TYPE2                0x11
148 #define HCI_VIDEO_OUT_LCD               0x1
149 #define HCI_VIDEO_OUT_CRT               0x2
150 #define HCI_VIDEO_OUT_TV                0x4
151 #define SCI_KBD_MODE_MASK               0x1f
152 #define SCI_KBD_MODE_FNZ                0x1
153 #define SCI_KBD_MODE_AUTO               0x2
154 #define SCI_KBD_MODE_ON                 0x8
155 #define SCI_KBD_MODE_OFF                0x10
156 #define SCI_KBD_TIME_MAX                0x3c001a
157 #define HCI_WIRELESS_STATUS             0x1
158 #define HCI_WIRELESS_WWAN               0x3
159 #define HCI_WIRELESS_WWAN_STATUS        0x2000
160 #define HCI_WIRELESS_WWAN_POWER         0x4000
161 #define SCI_USB_CHARGE_MODE_MASK        0xff
162 #define SCI_USB_CHARGE_DISABLED         0x00
163 #define SCI_USB_CHARGE_ALTERNATE        0x09
164 #define SCI_USB_CHARGE_TYPICAL          0x11
165 #define SCI_USB_CHARGE_AUTO             0x21
166 #define SCI_USB_CHARGE_BAT_MASK         0x7
167 #define SCI_USB_CHARGE_BAT_LVL_OFF      0x1
168 #define SCI_USB_CHARGE_BAT_LVL_ON       0x4
169 #define SCI_USB_CHARGE_BAT_LVL          0x0200
170 #define SCI_USB_CHARGE_RAPID_DSP        0x0300
171 
172 struct toshiba_acpi_dev {
173         struct acpi_device *acpi_dev;
174         const char *method_hci;
175         struct input_dev *hotkey_dev;
176         struct work_struct hotkey_work;
177         struct backlight_device *backlight_dev;
178         struct led_classdev led_dev;
179         struct led_classdev kbd_led;
180         struct led_classdev eco_led;
181         struct miscdevice miscdev;
182         struct rfkill *wwan_rfk;
183         struct iio_dev *indio_dev;
184 
185         int force_fan;
186         int last_key_event;
187         int key_event_valid;
188         int kbd_type;
189         int kbd_mode;
190         int kbd_time;
191         int usbsc_bat_level;
192         int usbsc_mode_base;
193         int hotkey_event_type;
194         int max_cooling_method;
195 
196         unsigned int illumination_supported:1;
197         unsigned int video_supported:1;
198         unsigned int fan_supported:1;
199         unsigned int system_event_supported:1;
200         unsigned int ntfy_supported:1;
201         unsigned int info_supported:1;
202         unsigned int tr_backlight_supported:1;
203         unsigned int kbd_illum_supported:1;
204         unsigned int touchpad_supported:1;
205         unsigned int eco_supported:1;
206         unsigned int accelerometer_supported:1;
207         unsigned int usb_sleep_charge_supported:1;
208         unsigned int usb_rapid_charge_supported:1;
209         unsigned int usb_sleep_music_supported:1;
210         unsigned int kbd_function_keys_supported:1;
211         unsigned int panel_power_on_supported:1;
212         unsigned int usb_three_supported:1;
213         unsigned int wwan_supported:1;
214         unsigned int cooling_method_supported:1;
215         unsigned int sysfs_created:1;
216         unsigned int special_functions;
217 
218         bool kbd_event_generated;
219         bool kbd_led_registered;
220         bool illumination_led_registered;
221         bool eco_led_registered;
222         bool killswitch;
223 };
224 
225 static struct toshiba_acpi_dev *toshiba_acpi;
226 
227 static bool disable_hotkeys;
228 module_param(disable_hotkeys, bool, 0444);
229 MODULE_PARM_DESC(disable_hotkeys, "Disables the hotkeys activation");
230 
231 static const struct acpi_device_id toshiba_device_ids[] = {
232         {"TOS6200", 0},
233         {"TOS6207", 0},
234         {"TOS6208", 0},
235         {"TOS1900", 0},
236         {"", 0},
237 };
238 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
239 
240 static const struct key_entry toshiba_acpi_keymap[] = {
241         { KE_KEY, 0x9e, { KEY_RFKILL } },
242         { KE_KEY, 0x101, { KEY_MUTE } },
243         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
244         { KE_KEY, 0x103, { KEY_ZOOMIN } },
245         { KE_KEY, 0x10f, { KEY_TAB } },
246         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
247         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
248         { KE_KEY, 0x13b, { KEY_COFFEE } },
249         { KE_KEY, 0x13c, { KEY_BATTERY } },
250         { KE_KEY, 0x13d, { KEY_SLEEP } },
251         { KE_KEY, 0x13e, { KEY_SUSPEND } },
252         { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
253         { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
254         { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
255         { KE_KEY, 0x142, { KEY_WLAN } },
256         { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
257         { KE_KEY, 0x17f, { KEY_FN } },
258         { KE_KEY, 0xb05, { KEY_PROG2 } },
259         { KE_KEY, 0xb06, { KEY_WWW } },
260         { KE_KEY, 0xb07, { KEY_MAIL } },
261         { KE_KEY, 0xb30, { KEY_STOP } },
262         { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
263         { KE_KEY, 0xb32, { KEY_NEXTSONG } },
264         { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
265         { KE_KEY, 0xb5a, { KEY_MEDIA } },
266         { KE_IGNORE, 0x1430, { KEY_RESERVED } }, /* Wake from sleep */
267         { KE_IGNORE, 0x1501, { KEY_RESERVED } }, /* Output changed */
268         { KE_IGNORE, 0x1502, { KEY_RESERVED } }, /* HDMI plugged/unplugged */
269         { KE_IGNORE, 0x1ABE, { KEY_RESERVED } }, /* Protection level set */
270         { KE_IGNORE, 0x1ABF, { KEY_RESERVED } }, /* Protection level off */
271         { KE_END, 0 },
272 };
273 
274 static const struct key_entry toshiba_acpi_alt_keymap[] = {
275         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
276         { KE_KEY, 0x103, { KEY_ZOOMIN } },
277         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
278         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
279         { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
280         { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
281         { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
282         { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
283         { KE_KEY, 0x157, { KEY_MUTE } },
284         { KE_KEY, 0x158, { KEY_WLAN } },
285         { KE_END, 0 },
286 };
287 
288 /*
289  * List of models which have a broken acpi-video backlight interface and thus
290  * need to use the toshiba (vendor) interface instead.
291  */
292 static const struct dmi_system_id toshiba_vendor_backlight_dmi[] = {
293         {}
294 };
295 
296 /*
297  * Utility
298  */
299 
300 static inline void _set_bit(u32 *word, u32 mask, int value)
301 {
302         *word = (*word & ~mask) | (mask * value);
303 }
304 
305 /*
306  * ACPI interface wrappers
307  */
308 
309 static int write_acpi_int(const char *methodName, int val)
310 {
311         acpi_status status;
312 
313         status = acpi_execute_simple_method(NULL, (char *)methodName, val);
314         return (status == AE_OK) ? 0 : -EIO;
315 }
316 
317 /*
318  * Perform a raw configuration call.  Here we don't care about input or output
319  * buffer format.
320  */
321 static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
322                            const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
323 {
324         union acpi_object in_objs[TCI_WORDS], out_objs[TCI_WORDS + 1];
325         struct acpi_object_list params;
326         struct acpi_buffer results;
327         acpi_status status;
328         int i;
329 
330         params.count = TCI_WORDS;
331         params.pointer = in_objs;
332         for (i = 0; i < TCI_WORDS; ++i) {
333                 in_objs[i].type = ACPI_TYPE_INTEGER;
334                 in_objs[i].integer.value = in[i];
335         }
336 
337         results.length = sizeof(out_objs);
338         results.pointer = out_objs;
339 
340         status = acpi_evaluate_object(dev->acpi_dev->handle,
341                                       (char *)dev->method_hci, &params,
342                                       &results);
343         if ((status == AE_OK) && (out_objs->package.count <= TCI_WORDS)) {
344                 for (i = 0; i < out_objs->package.count; ++i)
345                         out[i] = out_objs->package.elements[i].integer.value;
346         }
347 
348         return status;
349 }
350 
351 /*
352  * Common hci tasks
353  *
354  * In addition to the ACPI status, the HCI system returns a result which
355  * may be useful (such as "not supported").
356  */
357 
358 static u32 hci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
359 {
360         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
361         u32 out[TCI_WORDS];
362         acpi_status status = tci_raw(dev, in, out);
363 
364         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
365 }
366 
367 static u32 hci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
368 {
369         u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
370         u32 out[TCI_WORDS];
371         acpi_status status = tci_raw(dev, in, out);
372 
373         if (ACPI_FAILURE(status))
374                 return TOS_FAILURE;
375 
376         *out1 = out[2];
377 
378         return out[0];
379 }
380 
381 /*
382  * Common sci tasks
383  */
384 
385 static int sci_open(struct toshiba_acpi_dev *dev)
386 {
387         u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
388         u32 out[TCI_WORDS];
389         acpi_status status = tci_raw(dev, in, out);
390 
391         if  (ACPI_FAILURE(status)) {
392                 pr_err("ACPI call to open SCI failed\n");
393                 return 0;
394         }
395 
396         if (out[0] == TOS_OPEN_CLOSE_OK) {
397                 return 1;
398         } else if (out[0] == TOS_ALREADY_OPEN) {
399                 pr_info("Toshiba SCI already opened\n");
400                 return 1;
401         } else if (out[0] == TOS_NOT_SUPPORTED) {
402                 /*
403                  * Some BIOSes do not have the SCI open/close functions
404                  * implemented and return 0x8000 (Not Supported), failing to
405                  * register some supported features.
406                  *
407                  * Simply return 1 if we hit those affected laptops to make the
408                  * supported features work.
409                  *
410                  * In the case that some laptops really do not support the SCI,
411                  * all the SCI dependent functions check for TOS_NOT_SUPPORTED,
412                  * and thus, not registering support for the queried feature.
413                  */
414                 return 1;
415         } else if (out[0] == TOS_NOT_PRESENT) {
416                 pr_info("Toshiba SCI is not present\n");
417         }
418 
419         return 0;
420 }
421 
422 static void sci_close(struct toshiba_acpi_dev *dev)
423 {
424         u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
425         u32 out[TCI_WORDS];
426         acpi_status status = tci_raw(dev, in, out);
427 
428         if (ACPI_FAILURE(status)) {
429                 pr_err("ACPI call to close SCI failed\n");
430                 return;
431         }
432 
433         if (out[0] == TOS_OPEN_CLOSE_OK)
434                 return;
435         else if (out[0] == TOS_NOT_OPENED)
436                 pr_info("Toshiba SCI not opened\n");
437         else if (out[0] == TOS_NOT_PRESENT)
438                 pr_info("Toshiba SCI is not present\n");
439 }
440 
441 static u32 sci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
442 {
443         u32 in[TCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
444         u32 out[TCI_WORDS];
445         acpi_status status = tci_raw(dev, in, out);
446 
447         if (ACPI_FAILURE(status))
448                 return TOS_FAILURE;
449 
450         *out1 = out[2];
451 
452         return out[0];
453 }
454 
455 static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
456 {
457         u32 in[TCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
458         u32 out[TCI_WORDS];
459         acpi_status status = tci_raw(dev, in, out);
460 
461         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
462 }
463 
464 /* Illumination support */
465 static void toshiba_illumination_available(struct toshiba_acpi_dev *dev)
466 {
467         u32 in[TCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
468         u32 out[TCI_WORDS];
469         acpi_status status;
470 
471         dev->illumination_supported = 0;
472         dev->illumination_led_registered = false;
473 
474         if (!sci_open(dev))
475                 return;
476 
477         status = tci_raw(dev, in, out);
478         sci_close(dev);
479         if (ACPI_FAILURE(status)) {
480                 pr_err("ACPI call to query Illumination support failed\n");
481                 return;
482         }
483 
484         if (out[0] != TOS_SUCCESS)
485                 return;
486 
487         dev->illumination_supported = 1;
488 }
489 
490 static void toshiba_illumination_set(struct led_classdev *cdev,
491                                      enum led_brightness brightness)
492 {
493         struct toshiba_acpi_dev *dev = container_of(cdev,
494                         struct toshiba_acpi_dev, led_dev);
495         u32 result;
496         u32 state;
497 
498         /* First request : initialize communication. */
499         if (!sci_open(dev))
500                 return;
501 
502         /* Switch the illumination on/off */
503         state = brightness ? 1 : 0;
504         result = sci_write(dev, SCI_ILLUMINATION, state);
505         sci_close(dev);
506         if (result == TOS_FAILURE)
507                 pr_err("ACPI call for illumination failed\n");
508 }
509 
510 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
511 {
512         struct toshiba_acpi_dev *dev = container_of(cdev,
513                         struct toshiba_acpi_dev, led_dev);
514         u32 result;
515         u32 state;
516 
517         /* First request : initialize communication. */
518         if (!sci_open(dev))
519                 return LED_OFF;
520 
521         /* Check the illumination */
522         result = sci_read(dev, SCI_ILLUMINATION, &state);
523         sci_close(dev);
524         if (result == TOS_FAILURE) {
525                 pr_err("ACPI call for illumination failed\n");
526                 return LED_OFF;
527         } else if (result != TOS_SUCCESS) {
528                 return LED_OFF;
529         }
530 
531         return state ? LED_FULL : LED_OFF;
532 }
533 
534 /* KBD Illumination */
535 static void toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
536 {
537         u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
538         u32 out[TCI_WORDS];
539         acpi_status status;
540 
541         dev->kbd_illum_supported = 0;
542         dev->kbd_led_registered = false;
543         dev->kbd_event_generated = false;
544 
545         if (!sci_open(dev))
546                 return;
547 
548         status = tci_raw(dev, in, out);
549         sci_close(dev);
550         if (ACPI_FAILURE(status)) {
551                 pr_err("ACPI call to query kbd illumination support failed\n");
552                 return;
553         }
554 
555         if (out[0] != TOS_SUCCESS)
556                 return;
557 
558         /*
559          * Check for keyboard backlight timeout max value,
560          * previous kbd backlight implementation set this to
561          * 0x3c0003, and now the new implementation set this
562          * to 0x3c001a, use this to distinguish between them.
563          */
564         if (out[3] == SCI_KBD_TIME_MAX)
565                 dev->kbd_type = 2;
566         else
567                 dev->kbd_type = 1;
568         /* Get the current keyboard backlight mode */
569         dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
570         /* Get the current time (1-60 seconds) */
571         dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
572         /* Flag as supported */
573         dev->kbd_illum_supported = 1;
574 }
575 
576 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
577 {
578         u32 result;
579 
580         if (!sci_open(dev))
581                 return -EIO;
582 
583         result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
584         sci_close(dev);
585         if (result == TOS_FAILURE)
586                 pr_err("ACPI call to set KBD backlight status failed\n");
587         else if (result == TOS_NOT_SUPPORTED)
588                 return -ENODEV;
589 
590         return result == TOS_SUCCESS ? 0 : -EIO;
591 }
592 
593 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
594 {
595         u32 result;
596 
597         if (!sci_open(dev))
598                 return -EIO;
599 
600         result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
601         sci_close(dev);
602         if (result == TOS_FAILURE)
603                 pr_err("ACPI call to get KBD backlight status failed\n");
604         else if (result == TOS_NOT_SUPPORTED)
605                 return -ENODEV;
606 
607         return result == TOS_SUCCESS ? 0 : -EIO;
608 }
609 
610 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
611 {
612         struct toshiba_acpi_dev *dev = container_of(cdev,
613                         struct toshiba_acpi_dev, kbd_led);
614         u32 result;
615         u32 state;
616 
617         /* Check the keyboard backlight state */
618         result = hci_read(dev, HCI_KBD_ILLUMINATION, &state);
619         if (result == TOS_FAILURE) {
620                 pr_err("ACPI call to get the keyboard backlight failed\n");
621                 return LED_OFF;
622         } else if (result != TOS_SUCCESS) {
623                 return LED_OFF;
624         }
625 
626         return state ? LED_FULL : LED_OFF;
627 }
628 
629 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
630                                      enum led_brightness brightness)
631 {
632         struct toshiba_acpi_dev *dev = container_of(cdev,
633                         struct toshiba_acpi_dev, kbd_led);
634         u32 result;
635         u32 state;
636 
637         /* Set the keyboard backlight state */
638         state = brightness ? 1 : 0;
639         result = hci_write(dev, HCI_KBD_ILLUMINATION, state);
640         if (result == TOS_FAILURE)
641                 pr_err("ACPI call to set KBD Illumination mode failed\n");
642 }
643 
644 /* TouchPad support */
645 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
646 {
647         u32 result;
648 
649         if (!sci_open(dev))
650                 return -EIO;
651 
652         result = sci_write(dev, SCI_TOUCHPAD, state);
653         sci_close(dev);
654         if (result == TOS_FAILURE)
655                 pr_err("ACPI call to set the touchpad failed\n");
656         else if (result == TOS_NOT_SUPPORTED)
657                 return -ENODEV;
658 
659         return result == TOS_SUCCESS ? 0 : -EIO;
660 }
661 
662 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
663 {
664         u32 result;
665 
666         if (!sci_open(dev))
667                 return -EIO;
668 
669         result = sci_read(dev, SCI_TOUCHPAD, state);
670         sci_close(dev);
671         if (result == TOS_FAILURE)
672                 pr_err("ACPI call to query the touchpad failed\n");
673         else if (result == TOS_NOT_SUPPORTED)
674                 return -ENODEV;
675 
676         return result == TOS_SUCCESS ? 0 : -EIO;
677 }
678 
679 /* Eco Mode support */
680 static void toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
681 {
682         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
683         u32 out[TCI_WORDS];
684         acpi_status status;
685 
686         dev->eco_supported = 0;
687         dev->eco_led_registered = false;
688 
689         status = tci_raw(dev, in, out);
690         if (ACPI_FAILURE(status)) {
691                 pr_err("ACPI call to get ECO led failed\n");
692                 return;
693         }
694 
695         if (out[0] == TOS_INPUT_DATA_ERROR) {
696                 /*
697                  * If we receive 0x8300 (Input Data Error), it means that the
698                  * LED device is present, but that we just screwed the input
699                  * parameters.
700                  *
701                  * Let's query the status of the LED to see if we really have a
702                  * success response, indicating the actual presense of the LED,
703                  * bail out otherwise.
704                  */
705                 in[3] = 1;
706                 status = tci_raw(dev, in, out);
707                 if (ACPI_FAILURE(status)) {
708                         pr_err("ACPI call to get ECO led failed\n");
709                         return;
710                 }
711 
712                 if (out[0] != TOS_SUCCESS)
713                         return;
714 
715                 dev->eco_supported = 1;
716         }
717 }
718 
719 static enum led_brightness
720 toshiba_eco_mode_get_status(struct led_classdev *cdev)
721 {
722         struct toshiba_acpi_dev *dev = container_of(cdev,
723                         struct toshiba_acpi_dev, eco_led);
724         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
725         u32 out[TCI_WORDS];
726         acpi_status status;
727 
728         status = tci_raw(dev, in, out);
729         if (ACPI_FAILURE(status)) {
730                 pr_err("ACPI call to get ECO led failed\n");
731                 return LED_OFF;
732         }
733 
734         if (out[0] != TOS_SUCCESS)
735                 return LED_OFF;
736 
737         return out[2] ? LED_FULL : LED_OFF;
738 }
739 
740 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
741                                      enum led_brightness brightness)
742 {
743         struct toshiba_acpi_dev *dev = container_of(cdev,
744                         struct toshiba_acpi_dev, eco_led);
745         u32 in[TCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
746         u32 out[TCI_WORDS];
747         acpi_status status;
748 
749         /* Switch the Eco Mode led on/off */
750         in[2] = (brightness) ? 1 : 0;
751         status = tci_raw(dev, in, out);
752         if (ACPI_FAILURE(status))
753                 pr_err("ACPI call to set ECO led failed\n");
754 }
755 
756 /* Accelerometer support */
757 static void toshiba_accelerometer_available(struct toshiba_acpi_dev *dev)
758 {
759         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
760         u32 out[TCI_WORDS];
761         acpi_status status;
762 
763         dev->accelerometer_supported = 0;
764 
765         /*
766          * Check if the accelerometer call exists,
767          * this call also serves as initialization
768          */
769         status = tci_raw(dev, in, out);
770         if (ACPI_FAILURE(status)) {
771                 pr_err("ACPI call to query the accelerometer failed\n");
772                 return;
773         }
774 
775         if (out[0] != TOS_SUCCESS)
776                 return;
777 
778         dev->accelerometer_supported = 1;
779 }
780 
781 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
782                                      u32 *xy, u32 *z)
783 {
784         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
785         u32 out[TCI_WORDS];
786         acpi_status status;
787 
788         /* Check the Accelerometer status */
789         status = tci_raw(dev, in, out);
790         if (ACPI_FAILURE(status)) {
791                 pr_err("ACPI call to query the accelerometer failed\n");
792                 return -EIO;
793         }
794 
795         if (out[0] == TOS_NOT_SUPPORTED)
796                 return -ENODEV;
797 
798         if (out[0] != TOS_SUCCESS)
799                 return -EIO;
800 
801         *xy = out[2];
802         *z = out[4];
803 
804         return 0;
805 }
806 
807 /* Sleep (Charge and Music) utilities support */
808 static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
809 {
810         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
811         u32 out[TCI_WORDS];
812         acpi_status status;
813 
814         dev->usb_sleep_charge_supported = 0;
815 
816         if (!sci_open(dev))
817                 return;
818 
819         status = tci_raw(dev, in, out);
820         if (ACPI_FAILURE(status)) {
821                 pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
822                 sci_close(dev);
823                 return;
824         }
825 
826         if (out[0] != TOS_SUCCESS) {
827                 sci_close(dev);
828                 return;
829         }
830 
831         dev->usbsc_mode_base = out[4];
832 
833         in[5] = SCI_USB_CHARGE_BAT_LVL;
834         status = tci_raw(dev, in, out);
835         sci_close(dev);
836         if (ACPI_FAILURE(status)) {
837                 pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
838                 return;
839         }
840 
841         if (out[0] != TOS_SUCCESS)
842                 return;
843 
844         dev->usbsc_bat_level = out[2];
845         /* Flag as supported */
846         dev->usb_sleep_charge_supported = 1;
847 }
848 
849 static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
850                                         u32 *mode)
851 {
852         u32 result;
853 
854         if (!sci_open(dev))
855                 return -EIO;
856 
857         result = sci_read(dev, SCI_USB_SLEEP_CHARGE, mode);
858         sci_close(dev);
859         if (result == TOS_FAILURE)
860                 pr_err("ACPI call to set USB S&C mode failed\n");
861         else if (result == TOS_NOT_SUPPORTED)
862                 return -ENODEV;
863 
864         return result == TOS_SUCCESS ? 0 : -EIO;
865 }
866 
867 static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
868                                         u32 mode)
869 {
870         u32 result;
871 
872         if (!sci_open(dev))
873                 return -EIO;
874 
875         result = sci_write(dev, SCI_USB_SLEEP_CHARGE, mode);
876         sci_close(dev);
877         if (result == TOS_FAILURE)
878                 pr_err("ACPI call to set USB S&C mode failed\n");
879         else if (result == TOS_NOT_SUPPORTED)
880                 return -ENODEV;
881 
882         return result == TOS_SUCCESS ? 0 : -EIO;
883 }
884 
885 static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
886                                               u32 *mode)
887 {
888         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
889         u32 out[TCI_WORDS];
890         acpi_status status;
891 
892         if (!sci_open(dev))
893                 return -EIO;
894 
895         in[5] = SCI_USB_CHARGE_BAT_LVL;
896         status = tci_raw(dev, in, out);
897         sci_close(dev);
898         if (ACPI_FAILURE(status)) {
899                 pr_err("ACPI call to get USB S&C battery level failed\n");
900                 return -EIO;
901         }
902 
903         if (out[0] == TOS_NOT_SUPPORTED)
904                 return -ENODEV;
905 
906         if (out[0] != TOS_SUCCESS)
907                 return -EIO;
908 
909         *mode = out[2];
910 
911         return 0;
912 
913 }
914 
915 static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
916                                               u32 mode)
917 {
918         u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
919         u32 out[TCI_WORDS];
920         acpi_status status;
921 
922         if (!sci_open(dev))
923                 return -EIO;
924 
925         in[2] = mode;
926         in[5] = SCI_USB_CHARGE_BAT_LVL;
927         status = tci_raw(dev, in, out);
928         sci_close(dev);
929         if (ACPI_FAILURE(status)) {
930                 pr_err("ACPI call to set USB S&C battery level failed\n");
931                 return -EIO;
932         }
933 
934         if (out[0] == TOS_NOT_SUPPORTED)
935                 return -ENODEV;
936 
937         return out[0] == TOS_SUCCESS ? 0 : -EIO;
938 }
939 
940 static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
941                                         u32 *state)
942 {
943         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
944         u32 out[TCI_WORDS];
945         acpi_status status;
946 
947         if (!sci_open(dev))
948                 return -EIO;
949 
950         in[5] = SCI_USB_CHARGE_RAPID_DSP;
951         status = tci_raw(dev, in, out);
952         sci_close(dev);
953         if (ACPI_FAILURE(status)) {
954                 pr_err("ACPI call to get USB Rapid Charge failed\n");
955                 return -EIO;
956         }
957 
958         if (out[0] == TOS_NOT_SUPPORTED)
959                 return -ENODEV;
960 
961         if (out[0] != TOS_SUCCESS && out[0] != TOS_SUCCESS2)
962                 return -EIO;
963 
964         *state = out[2];
965 
966         return 0;
967 }
968 
969 static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
970                                         u32 state)
971 {
972         u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
973         u32 out[TCI_WORDS];
974         acpi_status status;
975 
976         if (!sci_open(dev))
977                 return -EIO;
978 
979         in[2] = state;
980         in[5] = SCI_USB_CHARGE_RAPID_DSP;
981         status = tci_raw(dev, in, out);
982         sci_close(dev);
983         if (ACPI_FAILURE(status)) {
984                 pr_err("ACPI call to set USB Rapid Charge failed\n");
985                 return -EIO;
986         }
987 
988         if (out[0] == TOS_NOT_SUPPORTED)
989                 return -ENODEV;
990 
991         return (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) ? 0 : -EIO;
992 }
993 
994 static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
995 {
996         u32 result;
997 
998         if (!sci_open(dev))
999                 return -EIO;
1000 
1001         result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
1002         sci_close(dev);
1003         if (result == TOS_FAILURE)
1004                 pr_err("ACPI call to get Sleep and Music failed\n");
1005         else if (result == TOS_NOT_SUPPORTED)
1006                 return -ENODEV;
1007 
1008         return result == TOS_SUCCESS ? 0 : -EIO;
1009 }
1010 
1011 static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
1012 {
1013         u32 result;
1014 
1015         if (!sci_open(dev))
1016                 return -EIO;
1017 
1018         result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
1019         sci_close(dev);
1020         if (result == TOS_FAILURE)
1021                 pr_err("ACPI call to set Sleep and Music failed\n");
1022         else if (result == TOS_NOT_SUPPORTED)
1023                 return -ENODEV;
1024 
1025         return result == TOS_SUCCESS ? 0 : -EIO;
1026 }
1027 
1028 /* Keyboard function keys */
1029 static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)
1030 {
1031         u32 result;
1032 
1033         if (!sci_open(dev))
1034                 return -EIO;
1035 
1036         result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);
1037         sci_close(dev);
1038         if (result == TOS_FAILURE)
1039                 pr_err("ACPI call to get KBD function keys failed\n");
1040         else if (result == TOS_NOT_SUPPORTED)
1041                 return -ENODEV;
1042 
1043         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1044 }
1045 
1046 static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
1047 {
1048         u32 result;
1049 
1050         if (!sci_open(dev))
1051                 return -EIO;
1052 
1053         result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);
1054         sci_close(dev);
1055         if (result == TOS_FAILURE)
1056                 pr_err("ACPI call to set KBD function keys failed\n");
1057         else if (result == TOS_NOT_SUPPORTED)
1058                 return -ENODEV;
1059 
1060         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1061 }
1062 
1063 /* Panel Power ON */
1064 static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)
1065 {
1066         u32 result;
1067 
1068         if (!sci_open(dev))
1069                 return -EIO;
1070 
1071         result = sci_read(dev, SCI_PANEL_POWER_ON, state);
1072         sci_close(dev);
1073         if (result == TOS_FAILURE)
1074                 pr_err("ACPI call to get Panel Power ON failed\n");
1075         else if (result == TOS_NOT_SUPPORTED)
1076                 return -ENODEV;
1077 
1078         return result == TOS_SUCCESS ? 0 : -EIO;
1079 }
1080 
1081 static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
1082 {
1083         u32 result;
1084 
1085         if (!sci_open(dev))
1086                 return -EIO;
1087 
1088         result = sci_write(dev, SCI_PANEL_POWER_ON, state);
1089         sci_close(dev);
1090         if (result == TOS_FAILURE)
1091                 pr_err("ACPI call to set Panel Power ON failed\n");
1092         else if (result == TOS_NOT_SUPPORTED)
1093                 return -ENODEV;
1094 
1095         return result == TOS_SUCCESS ? 0 : -EIO;
1096 }
1097 
1098 /* USB Three */
1099 static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state)
1100 {
1101         u32 result;
1102 
1103         if (!sci_open(dev))
1104                 return -EIO;
1105 
1106         result = sci_read(dev, SCI_USB_THREE, state);
1107         sci_close(dev);
1108         if (result == TOS_FAILURE)
1109                 pr_err("ACPI call to get USB 3 failed\n");
1110         else if (result == TOS_NOT_SUPPORTED)
1111                 return -ENODEV;
1112 
1113         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1114 }
1115 
1116 static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
1117 {
1118         u32 result;
1119 
1120         if (!sci_open(dev))
1121                 return -EIO;
1122 
1123         result = sci_write(dev, SCI_USB_THREE, state);
1124         sci_close(dev);
1125         if (result == TOS_FAILURE)
1126                 pr_err("ACPI call to set USB 3 failed\n");
1127         else if (result == TOS_NOT_SUPPORTED)
1128                 return -ENODEV;
1129 
1130         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1131 }
1132 
1133 /* Hotkey Event type */
1134 static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
1135                                          u32 *type)
1136 {
1137         u32 in[TCI_WORDS] = { HCI_GET, HCI_SYSTEM_INFO, 0x03, 0, 0, 0 };
1138         u32 out[TCI_WORDS];
1139         acpi_status status;
1140 
1141         status = tci_raw(dev, in, out);
1142         if (ACPI_FAILURE(status)) {
1143                 pr_err("ACPI call to get System type failed\n");
1144                 return -EIO;
1145         }
1146 
1147         if (out[0] == TOS_NOT_SUPPORTED)
1148                 return -ENODEV;
1149 
1150         if (out[0] != TOS_SUCCESS)
1151                 return -EIO;
1152 
1153         *type = out[3];
1154 
1155         return 0;
1156 }
1157 
1158 /* Wireless status (RFKill, WLAN, BT, WWAN) */
1159 static int toshiba_wireless_status(struct toshiba_acpi_dev *dev)
1160 {
1161         u32 in[TCI_WORDS] = { HCI_GET, HCI_WIRELESS, 0, 0, 0, 0 };
1162         u32 out[TCI_WORDS];
1163         acpi_status status;
1164 
1165         in[3] = HCI_WIRELESS_STATUS;
1166         status = tci_raw(dev, in, out);
1167 
1168         if (ACPI_FAILURE(status)) {
1169                 pr_err("ACPI call to get Wireless status failed\n");
1170                 return -EIO;
1171         }
1172 
1173         if (out[0] == TOS_NOT_SUPPORTED)
1174                 return -ENODEV;
1175 
1176         if (out[0] != TOS_SUCCESS)
1177                 return -EIO;
1178 
1179         dev->killswitch = !!(out[2] & HCI_WIRELESS_STATUS);
1180 
1181         return 0;
1182 }
1183 
1184 /* WWAN */
1185 static void toshiba_wwan_available(struct toshiba_acpi_dev *dev)
1186 {
1187         u32 in[TCI_WORDS] = { HCI_GET, HCI_WIRELESS, 0, 0, 0, 0 };
1188         u32 out[TCI_WORDS];
1189         acpi_status status;
1190 
1191         dev->wwan_supported = 0;
1192 
1193         /*
1194          * WWAN support can be queried by setting the in[3] value to
1195          * HCI_WIRELESS_WWAN (0x03).
1196          *
1197          * If supported, out[0] contains TOS_SUCCESS and out[2] contains
1198          * HCI_WIRELESS_WWAN_STATUS (0x2000).
1199          *
1200          * If not supported, out[0] contains TOS_INPUT_DATA_ERROR (0x8300)
1201          * or TOS_NOT_SUPPORTED (0x8000).
1202          */
1203         in[3] = HCI_WIRELESS_WWAN;
1204         status = tci_raw(dev, in, out);
1205         if (ACPI_FAILURE(status)) {
1206                 pr_err("ACPI call to get WWAN status failed\n");
1207                 return;
1208         }
1209 
1210         if (out[0] != TOS_SUCCESS)
1211                 return;
1212 
1213         dev->wwan_supported = (out[2] == HCI_WIRELESS_WWAN_STATUS);
1214 }
1215 
1216 static int toshiba_wwan_set(struct toshiba_acpi_dev *dev, u32 state)
1217 {
1218         u32 in[TCI_WORDS] = { HCI_SET, HCI_WIRELESS, state, 0, 0, 0 };
1219         u32 out[TCI_WORDS];
1220         acpi_status status;
1221 
1222         in[3] = HCI_WIRELESS_WWAN_STATUS;
1223         status = tci_raw(dev, in, out);
1224         if (ACPI_FAILURE(status)) {
1225                 pr_err("ACPI call to set WWAN status failed\n");
1226                 return -EIO;
1227         }
1228 
1229         if (out[0] == TOS_NOT_SUPPORTED)
1230                 return -ENODEV;
1231 
1232         if (out[0] != TOS_SUCCESS)
1233                 return -EIO;
1234 
1235         /*
1236          * Some devices only need to call HCI_WIRELESS_WWAN_STATUS to
1237          * (de)activate the device, but some others need the
1238          * HCI_WIRELESS_WWAN_POWER call as well.
1239          */
1240         in[3] = HCI_WIRELESS_WWAN_POWER;
1241         status = tci_raw(dev, in, out);
1242         if (ACPI_FAILURE(status)) {
1243                 pr_err("ACPI call to set WWAN power failed\n");
1244                 return -EIO;
1245         }
1246 
1247         if (out[0] == TOS_NOT_SUPPORTED)
1248                 return -ENODEV;
1249 
1250         return out[0] == TOS_SUCCESS ? 0 : -EIO;
1251 }
1252 
1253 /* Cooling Method */
1254 static void toshiba_cooling_method_available(struct toshiba_acpi_dev *dev)
1255 {
1256         u32 in[TCI_WORDS] = { HCI_GET, HCI_COOLING_METHOD, 0, 0, 0, 0 };
1257         u32 out[TCI_WORDS];
1258         acpi_status status;
1259 
1260         dev->cooling_method_supported = 0;
1261         dev->max_cooling_method = 0;
1262 
1263         status = tci_raw(dev, in, out);
1264         if (ACPI_FAILURE(status)) {
1265                 pr_err("ACPI call to get Cooling Method failed\n");
1266                 return;
1267         }
1268 
1269         if (out[0] != TOS_SUCCESS && out[0] != TOS_SUCCESS2)
1270                 return;
1271 
1272         dev->cooling_method_supported = 1;
1273         dev->max_cooling_method = out[3];
1274 }
1275 
1276 static int toshiba_cooling_method_get(struct toshiba_acpi_dev *dev, u32 *state)
1277 {
1278         u32 result = hci_read(dev, HCI_COOLING_METHOD, state);
1279 
1280         if (result == TOS_FAILURE)
1281                 pr_err("ACPI call to get Cooling Method failed\n");
1282 
1283         if (result == TOS_NOT_SUPPORTED)
1284                 return -ENODEV;
1285 
1286         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1287 }
1288 
1289 static int toshiba_cooling_method_set(struct toshiba_acpi_dev *dev, u32 state)
1290 {
1291         u32 result = hci_write(dev, HCI_COOLING_METHOD, state);
1292 
1293         if (result == TOS_FAILURE)
1294                 pr_err("ACPI call to set Cooling Method failed\n");
1295 
1296         if (result == TOS_NOT_SUPPORTED)
1297                 return -ENODEV;
1298 
1299         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1300 }
1301 
1302 /* Transflective Backlight */
1303 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 *status)
1304 {
1305         u32 result = hci_read(dev, HCI_TR_BACKLIGHT, status);
1306 
1307         if (result == TOS_FAILURE)
1308                 pr_err("ACPI call to get Transflective Backlight failed\n");
1309         else if (result == TOS_NOT_SUPPORTED)
1310                 return -ENODEV;
1311 
1312         return result == TOS_SUCCESS ? 0 : -EIO;
1313 }
1314 
1315 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 status)
1316 {
1317         u32 result = hci_write(dev, HCI_TR_BACKLIGHT, !status);
1318 
1319         if (result == TOS_FAILURE)
1320                 pr_err("ACPI call to set Transflective Backlight failed\n");
1321         else if (result == TOS_NOT_SUPPORTED)
1322                 return -ENODEV;
1323 
1324         return result == TOS_SUCCESS ? 0 : -EIO;
1325 }
1326 
1327 static struct proc_dir_entry *toshiba_proc_dir;
1328 
1329 /* LCD Brightness */
1330 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
1331 {
1332         int brightness = 0;
1333         u32 result;
1334         u32 value;
1335 
1336         if (dev->tr_backlight_supported) {
1337                 int ret = get_tr_backlight_status(dev, &value);
1338 
1339                 if (ret)
1340                         return ret;
1341                 if (value)
1342                         return 0;
1343                 brightness++;
1344         }
1345 
1346         result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);
1347         if (result == TOS_FAILURE)
1348                 pr_err("ACPI call to get LCD Brightness failed\n");
1349         else if (result == TOS_NOT_SUPPORTED)
1350                 return -ENODEV;
1351 
1352         return result == TOS_SUCCESS ?
1353                         brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT) :
1354                         -EIO;
1355 }
1356 
1357 static int get_lcd_brightness(struct backlight_device *bd)
1358 {
1359         struct toshiba_acpi_dev *dev = bl_get_data(bd);
1360 
1361         return __get_lcd_brightness(dev);
1362 }
1363 
1364 static int lcd_proc_show(struct seq_file *m, void *v)
1365 {
1366         struct toshiba_acpi_dev *dev = m->private;
1367         int levels;
1368         int value;
1369 
1370         if (!dev->backlight_dev)
1371                 return -ENODEV;
1372 
1373         levels = dev->backlight_dev->props.max_brightness + 1;
1374         value = get_lcd_brightness(dev->backlight_dev);
1375         if (value < 0) {
1376                 pr_err("Error reading LCD brightness\n");
1377                 return value;
1378         }
1379 
1380         seq_printf(m, "brightness:              %d\n", value);
1381         seq_printf(m, "brightness_levels:       %d\n", levels);
1382 
1383         return 0;
1384 }
1385 
1386 static int lcd_proc_open(struct inode *inode, struct file *file)
1387 {
1388         return single_open(file, lcd_proc_show, PDE_DATA(inode));
1389 }
1390 
1391 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
1392 {
1393         u32 result;
1394 
1395         if (dev->tr_backlight_supported) {
1396                 int ret = set_tr_backlight_status(dev, !value);
1397 
1398                 if (ret)
1399                         return ret;
1400                 if (value)
1401                         value--;
1402         }
1403 
1404         value = value << HCI_LCD_BRIGHTNESS_SHIFT;
1405         result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);
1406         if (result == TOS_FAILURE)
1407                 pr_err("ACPI call to set LCD Brightness failed\n");
1408         else if (result == TOS_NOT_SUPPORTED)
1409                 return -ENODEV;
1410 
1411         return result == TOS_SUCCESS ? 0 : -EIO;
1412 }
1413 
1414 static int set_lcd_status(struct backlight_device *bd)
1415 {
1416         struct toshiba_acpi_dev *dev = bl_get_data(bd);
1417 
1418         return set_lcd_brightness(dev, bd->props.brightness);
1419 }
1420 
1421 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
1422                               size_t count, loff_t *pos)
1423 {
1424         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1425         char cmd[42];
1426         size_t len;
1427         int levels;
1428         int value;
1429 
1430         len = min(count, sizeof(cmd) - 1);
1431         if (copy_from_user(cmd, buf, len))
1432                 return -EFAULT;
1433         cmd[len] = '\0';
1434 
1435         levels = dev->backlight_dev->props.max_brightness + 1;
1436         if (sscanf(cmd, " brightness : %i", &value) != 1 &&
1437             value < 0 && value > levels)
1438                 return -EINVAL;
1439 
1440         if (set_lcd_brightness(dev, value))
1441                 return -EIO;
1442 
1443         return count;
1444 }
1445 
1446 static const struct file_operations lcd_proc_fops = {
1447         .owner          = THIS_MODULE,
1448         .open           = lcd_proc_open,
1449         .read           = seq_read,
1450         .llseek         = seq_lseek,
1451         .release        = single_release,
1452         .write          = lcd_proc_write,
1453 };
1454 
1455 /* Video-Out */
1456 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
1457 {
1458         u32 result = hci_read(dev, HCI_VIDEO_OUT, status);
1459 
1460         if (result == TOS_FAILURE)
1461                 pr_err("ACPI call to get Video-Out failed\n");
1462         else if (result == TOS_NOT_SUPPORTED)
1463                 return -ENODEV;
1464 
1465         return result == TOS_SUCCESS ? 0 : -EIO;
1466 }
1467 
1468 static int video_proc_show(struct seq_file *m, void *v)
1469 {
1470         struct toshiba_acpi_dev *dev = m->private;
1471         int is_lcd, is_crt, is_tv;
1472         u32 value;
1473 
1474         if (get_video_status(dev, &value))
1475                 return -EIO;
1476 
1477         is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
1478         is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
1479         is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
1480 
1481         seq_printf(m, "lcd_out:                 %d\n", is_lcd);
1482         seq_printf(m, "crt_out:                 %d\n", is_crt);
1483         seq_printf(m, "tv_out:                  %d\n", is_tv);
1484 
1485         return 0;
1486 }
1487 
1488 static int video_proc_open(struct inode *inode, struct file *file)
1489 {
1490         return single_open(file, video_proc_show, PDE_DATA(inode));
1491 }
1492 
1493 static ssize_t video_proc_write(struct file *file, const char __user *buf,
1494                                 size_t count, loff_t *pos)
1495 {
1496         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1497         char *buffer;
1498         char *cmd;
1499         int lcd_out, crt_out, tv_out;
1500         int remain = count;
1501         int value;
1502         int ret;
1503         u32 video_out;
1504 
1505         cmd = kmalloc(count + 1, GFP_KERNEL);
1506         if (!cmd)
1507                 return -ENOMEM;
1508         if (copy_from_user(cmd, buf, count)) {
1509                 kfree(cmd);
1510                 return -EFAULT;
1511         }
1512         cmd[count] = '\0';
1513 
1514         buffer = cmd;
1515 
1516         /*
1517          * Scan expression.  Multiple expressions may be delimited with ;
1518          * NOTE: To keep scanning simple, invalid fields are ignored.
1519          */
1520         while (remain) {
1521                 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
1522                         lcd_out = value & 1;
1523                 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
1524                         crt_out = value & 1;
1525                 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
1526                         tv_out = value & 1;
1527                 /* Advance to one character past the next ; */
1528                 do {
1529                         ++buffer;
1530                         --remain;
1531                 } while (remain && *(buffer - 1) != ';');
1532         }
1533 
1534         kfree(cmd);
1535 
1536         lcd_out = crt_out = tv_out = -1;
1537         ret = get_video_status(dev, &video_out);
1538         if (!ret) {
1539                 unsigned int new_video_out = video_out;
1540 
1541                 if (lcd_out != -1)
1542                         _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
1543                 if (crt_out != -1)
1544                         _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
1545                 if (tv_out != -1)
1546                         _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
1547                 /*
1548                  * To avoid unnecessary video disruption, only write the new
1549                  * video setting if something changed.
1550                  */
1551                 if (new_video_out != video_out)
1552                         ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
1553         }
1554 
1555         return ret ? -EIO : count;
1556 }
1557 
1558 static const struct file_operations video_proc_fops = {
1559         .owner          = THIS_MODULE,
1560         .open           = video_proc_open,
1561         .read           = seq_read,
1562         .llseek         = seq_lseek,
1563         .release        = single_release,
1564         .write          = video_proc_write,
1565 };
1566 
1567 /* Fan status */
1568 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1569 {
1570         u32 result = hci_read(dev, HCI_FAN, status);
1571 
1572         if (result == TOS_FAILURE)
1573                 pr_err("ACPI call to get Fan status failed\n");
1574         else if (result == TOS_NOT_SUPPORTED)
1575                 return -ENODEV;
1576 
1577         return result == TOS_SUCCESS ? 0 : -EIO;
1578 }
1579 
1580 static int set_fan_status(struct toshiba_acpi_dev *dev, u32 status)
1581 {
1582         u32 result = hci_write(dev, HCI_FAN, status);
1583 
1584         if (result == TOS_FAILURE)
1585                 pr_err("ACPI call to set Fan status failed\n");
1586         else if (result == TOS_NOT_SUPPORTED)
1587                 return -ENODEV;
1588 
1589         return result == TOS_SUCCESS ? 0 : -EIO;
1590 }
1591 
1592 static int fan_proc_show(struct seq_file *m, void *v)
1593 {
1594         struct toshiba_acpi_dev *dev = m->private;
1595         u32 value;
1596 
1597         if (get_fan_status(dev, &value))
1598                 return -EIO;
1599 
1600         seq_printf(m, "running:                 %d\n", (value > 0));
1601         seq_printf(m, "force_on:                %d\n", dev->force_fan);
1602 
1603         return 0;
1604 }
1605 
1606 static int fan_proc_open(struct inode *inode, struct file *file)
1607 {
1608         return single_open(file, fan_proc_show, PDE_DATA(inode));
1609 }
1610 
1611 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1612                               size_t count, loff_t *pos)
1613 {
1614         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1615         char cmd[42];
1616         size_t len;
1617         int value;
1618 
1619         len = min(count, sizeof(cmd) - 1);
1620         if (copy_from_user(cmd, buf, len))
1621                 return -EFAULT;
1622         cmd[len] = '\0';
1623 
1624         if (sscanf(cmd, " force_on : %i", &value) != 1 &&
1625             value != 0 && value != 1)
1626                 return -EINVAL;
1627 
1628         if (set_fan_status(dev, value))
1629                 return -EIO;
1630 
1631         dev->force_fan = value;
1632 
1633         return count;
1634 }
1635 
1636 static const struct file_operations fan_proc_fops = {
1637         .owner          = THIS_MODULE,
1638         .open           = fan_proc_open,
1639         .read           = seq_read,
1640         .llseek         = seq_lseek,
1641         .release        = single_release,
1642         .write          = fan_proc_write,
1643 };
1644 
1645 static int keys_proc_show(struct seq_file *m, void *v)
1646 {
1647         struct toshiba_acpi_dev *dev = m->private;
1648 
1649         seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
1650         seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
1651 
1652         return 0;
1653 }
1654 
1655 static int keys_proc_open(struct inode *inode, struct file *file)
1656 {
1657         return single_open(file, keys_proc_show, PDE_DATA(inode));
1658 }
1659 
1660 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1661                                size_t count, loff_t *pos)
1662 {
1663         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1664         char cmd[42];
1665         size_t len;
1666         int value;
1667 
1668         len = min(count, sizeof(cmd) - 1);
1669         if (copy_from_user(cmd, buf, len))
1670                 return -EFAULT;
1671         cmd[len] = '\0';
1672 
1673         if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0)
1674                 dev->key_event_valid = 0;
1675         else
1676                 return -EINVAL;
1677 
1678         return count;
1679 }
1680 
1681 static const struct file_operations keys_proc_fops = {
1682         .owner          = THIS_MODULE,
1683         .open           = keys_proc_open,
1684         .read           = seq_read,
1685         .llseek         = seq_lseek,
1686         .release        = single_release,
1687         .write          = keys_proc_write,
1688 };
1689 
1690 static int version_proc_show(struct seq_file *m, void *v)
1691 {
1692         seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
1693         seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);
1694         return 0;
1695 }
1696 
1697 static int version_proc_open(struct inode *inode, struct file *file)
1698 {
1699         return single_open(file, version_proc_show, PDE_DATA(inode));
1700 }
1701 
1702 static const struct file_operations version_proc_fops = {
1703         .owner          = THIS_MODULE,
1704         .open           = version_proc_open,
1705         .read           = seq_read,
1706         .llseek         = seq_lseek,
1707         .release        = single_release,
1708 };
1709 
1710 /*
1711  * Proc and module init
1712  */
1713 
1714 #define PROC_TOSHIBA            "toshiba"
1715 
1716 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1717 {
1718         if (dev->backlight_dev)
1719                 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1720                                  &lcd_proc_fops, dev);
1721         if (dev->video_supported)
1722                 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1723                                  &video_proc_fops, dev);
1724         if (dev->fan_supported)
1725                 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1726                                  &fan_proc_fops, dev);
1727         if (dev->hotkey_dev)
1728                 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1729                                  &keys_proc_fops, dev);
1730         proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1731                          &version_proc_fops, dev);
1732 }
1733 
1734 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1735 {
1736         if (dev->backlight_dev)
1737                 remove_proc_entry("lcd", toshiba_proc_dir);
1738         if (dev->video_supported)
1739                 remove_proc_entry("video", toshiba_proc_dir);
1740         if (dev->fan_supported)
1741                 remove_proc_entry("fan", toshiba_proc_dir);
1742         if (dev->hotkey_dev)
1743                 remove_proc_entry("keys", toshiba_proc_dir);
1744         remove_proc_entry("version", toshiba_proc_dir);
1745 }
1746 
1747 static const struct backlight_ops toshiba_backlight_data = {
1748         .options = BL_CORE_SUSPENDRESUME,
1749         .get_brightness = get_lcd_brightness,
1750         .update_status  = set_lcd_status,
1751 };
1752 
1753 /* Keyboard backlight work */
1754 static void toshiba_acpi_kbd_bl_work(struct work_struct *work);
1755 
1756 static DECLARE_WORK(kbd_bl_work, toshiba_acpi_kbd_bl_work);
1757 
1758 /*
1759  * Sysfs files
1760  */
1761 static ssize_t version_show(struct device *dev,
1762                             struct device_attribute *attr, char *buf)
1763 {
1764         return sprintf(buf, "%s\n", TOSHIBA_ACPI_VERSION);
1765 }
1766 static DEVICE_ATTR_RO(version);
1767 
1768 static ssize_t fan_store(struct device *dev,
1769                          struct device_attribute *attr,
1770                          const char *buf, size_t count)
1771 {
1772         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1773         int state;
1774         int ret;
1775 
1776         ret = kstrtoint(buf, 0, &state);
1777         if (ret)
1778                 return ret;
1779 
1780         if (state != 0 && state != 1)
1781                 return -EINVAL;
1782 
1783         ret = set_fan_status(toshiba, state);
1784         if (ret)
1785                 return ret;
1786 
1787         return count;
1788 }
1789 
1790 static ssize_t fan_show(struct device *dev,
1791                         struct device_attribute *attr, char *buf)
1792 {
1793         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1794         u32 value;
1795         int ret;
1796 
1797         ret = get_fan_status(toshiba, &value);
1798         if (ret)
1799                 return ret;
1800 
1801         return sprintf(buf, "%d\n", value);
1802 }
1803 static DEVICE_ATTR_RW(fan);
1804 
1805 static ssize_t kbd_backlight_mode_store(struct device *dev,
1806                                         struct device_attribute *attr,
1807                                         const char *buf, size_t count)
1808 {
1809         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1810         int mode;
1811         int ret;
1812 
1813 
1814         ret = kstrtoint(buf, 0, &mode);
1815         if (ret)
1816                 return ret;
1817 
1818         /* Check for supported modes depending on keyboard backlight type */
1819         if (toshiba->kbd_type == 1) {
1820                 /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */
1821                 if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO)
1822                         return -EINVAL;
1823         } else if (toshiba->kbd_type == 2) {
1824                 /* Type 2 doesn't support SCI_KBD_MODE_FNZ */
1825                 if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON &&
1826                     mode != SCI_KBD_MODE_OFF)
1827                         return -EINVAL;
1828         }
1829 
1830         /*
1831          * Set the Keyboard Backlight Mode where:
1832          *      Auto - KBD backlight turns off automatically in given time
1833          *      FN-Z - KBD backlight "toggles" when hotkey pressed
1834          *      ON   - KBD backlight is always on
1835          *      OFF  - KBD backlight is always off
1836          */
1837 
1838         /* Only make a change if the actual mode has changed */
1839         if (toshiba->kbd_mode != mode) {
1840                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1841                 int time = toshiba->kbd_time << HCI_MISC_SHIFT;
1842 
1843                 /* OR the "base time" to the actual method format */
1844                 if (toshiba->kbd_type == 1) {
1845                         /* Type 1 requires the current mode */
1846                         time |= toshiba->kbd_mode;
1847                 } else if (toshiba->kbd_type == 2) {
1848                         /* Type 2 requires the desired mode */
1849                         time |= mode;
1850                 }
1851 
1852                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1853                 if (ret)
1854                         return ret;
1855 
1856                 toshiba->kbd_mode = mode;
1857 
1858                 /*
1859                  * Some laptop models with the second generation backlit
1860                  * keyboard (type 2) do not generate the keyboard backlight
1861                  * changed event (0x92), and thus, the driver will never update
1862                  * the sysfs entries.
1863                  *
1864                  * The event is generated right when changing the keyboard
1865                  * backlight mode and the *notify function will set the
1866                  * kbd_event_generated to true.
1867                  *
1868                  * In case the event is not generated, schedule the keyboard
1869                  * backlight work to update the sysfs entries and emulate the
1870                  * event via genetlink.
1871                  */
1872                 if (toshiba->kbd_type == 2 &&
1873                     !toshiba_acpi->kbd_event_generated)
1874                         schedule_work(&kbd_bl_work);
1875         }
1876 
1877         return count;
1878 }
1879 
1880 static ssize_t kbd_backlight_mode_show(struct device *dev,
1881                                        struct device_attribute *attr,
1882                                        char *buf)
1883 {
1884         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1885         u32 time;
1886 
1887         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1888                 return -EIO;
1889 
1890         return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK);
1891 }
1892 static DEVICE_ATTR_RW(kbd_backlight_mode);
1893 
1894 static ssize_t kbd_type_show(struct device *dev,
1895                              struct device_attribute *attr, char *buf)
1896 {
1897         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1898 
1899         return sprintf(buf, "%d\n", toshiba->kbd_type);
1900 }
1901 static DEVICE_ATTR_RO(kbd_type);
1902 
1903 static ssize_t available_kbd_modes_show(struct device *dev,
1904                                         struct device_attribute *attr,
1905                                         char *buf)
1906 {
1907         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1908 
1909         if (toshiba->kbd_type == 1)
1910                 return sprintf(buf, "0x%x 0x%x\n",
1911                                SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
1912 
1913         return sprintf(buf, "0x%x 0x%x 0x%x\n",
1914                        SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF);
1915 }
1916 static DEVICE_ATTR_RO(available_kbd_modes);
1917 
1918 static ssize_t kbd_backlight_timeout_store(struct device *dev,
1919                                            struct device_attribute *attr,
1920                                            const char *buf, size_t count)
1921 {
1922         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1923         int time;
1924         int ret;
1925 
1926         ret = kstrtoint(buf, 0, &time);
1927         if (ret)
1928                 return ret;
1929 
1930         /* Check for supported values depending on kbd_type */
1931         if (toshiba->kbd_type == 1) {
1932                 if (time < 0 || time > 60)
1933                         return -EINVAL;
1934         } else if (toshiba->kbd_type == 2) {
1935                 if (time < 1 || time > 60)
1936                         return -EINVAL;
1937         }
1938 
1939         /* Set the Keyboard Backlight Timeout */
1940 
1941         /* Only make a change if the actual timeout has changed */
1942         if (toshiba->kbd_time != time) {
1943                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1944                 time = time << HCI_MISC_SHIFT;
1945                 /* OR the "base time" to the actual method format */
1946                 if (toshiba->kbd_type == 1)
1947                         time |= SCI_KBD_MODE_FNZ;
1948                 else if (toshiba->kbd_type == 2)
1949                         time |= SCI_KBD_MODE_AUTO;
1950 
1951                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1952                 if (ret)
1953                         return ret;
1954 
1955                 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1956         }
1957 
1958         return count;
1959 }
1960 
1961 static ssize_t kbd_backlight_timeout_show(struct device *dev,
1962                                           struct device_attribute *attr,
1963                                           char *buf)
1964 {
1965         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1966         u32 time;
1967 
1968         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1969                 return -EIO;
1970 
1971         return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1972 }
1973 static DEVICE_ATTR_RW(kbd_backlight_timeout);
1974 
1975 static ssize_t touchpad_store(struct device *dev,
1976                               struct device_attribute *attr,
1977                               const char *buf, size_t count)
1978 {
1979         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1980         int state;
1981         int ret;
1982 
1983         /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1984         ret = kstrtoint(buf, 0, &state);
1985         if (ret)
1986                 return ret;
1987         if (state != 0 && state != 1)
1988                 return -EINVAL;
1989 
1990         ret = toshiba_touchpad_set(toshiba, state);
1991         if (ret)
1992                 return ret;
1993 
1994         return count;
1995 }
1996 
1997 static ssize_t touchpad_show(struct device *dev,
1998                              struct device_attribute *attr, char *buf)
1999 {
2000         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2001         u32 state;
2002         int ret;
2003 
2004         ret = toshiba_touchpad_get(toshiba, &state);
2005         if (ret < 0)
2006                 return ret;
2007 
2008         return sprintf(buf, "%i\n", state);
2009 }
2010 static DEVICE_ATTR_RW(touchpad);
2011 
2012 static ssize_t usb_sleep_charge_show(struct device *dev,
2013                                      struct device_attribute *attr, char *buf)
2014 {
2015         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2016         u32 mode;
2017         int ret;
2018 
2019         ret = toshiba_usb_sleep_charge_get(toshiba, &mode);
2020         if (ret < 0)
2021                 return ret;
2022 
2023         return sprintf(buf, "%x\n", mode & SCI_USB_CHARGE_MODE_MASK);
2024 }
2025 
2026 static ssize_t usb_sleep_charge_store(struct device *dev,
2027                                       struct device_attribute *attr,
2028                                       const char *buf, size_t count)
2029 {
2030         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2031         int state;
2032         u32 mode;
2033         int ret;
2034 
2035         ret = kstrtoint(buf, 0, &state);
2036         if (ret)
2037                 return ret;
2038         /*
2039          * Check for supported values, where:
2040          * 0 - Disabled
2041          * 1 - Alternate (Non USB conformant devices that require more power)
2042          * 2 - Auto (USB conformant devices)
2043          * 3 - Typical
2044          */
2045         if (state != 0 && state != 1 && state != 2 && state != 3)
2046                 return -EINVAL;
2047 
2048         /* Set the USB charging mode to internal value */
2049         mode = toshiba->usbsc_mode_base;
2050         if (state == 0)
2051                 mode |= SCI_USB_CHARGE_DISABLED;
2052         else if (state == 1)
2053                 mode |= SCI_USB_CHARGE_ALTERNATE;
2054         else if (state == 2)
2055                 mode |= SCI_USB_CHARGE_AUTO;
2056         else if (state == 3)
2057                 mode |= SCI_USB_CHARGE_TYPICAL;
2058 
2059         ret = toshiba_usb_sleep_charge_set(toshiba, mode);
2060         if (ret)
2061                 return ret;
2062 
2063         return count;
2064 }
2065 static DEVICE_ATTR_RW(usb_sleep_charge);
2066 
2067 static ssize_t sleep_functions_on_battery_show(struct device *dev,
2068                                                struct device_attribute *attr,
2069                                                char *buf)
2070 {
2071         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2072         int bat_lvl, status;
2073         u32 state;
2074         int ret;
2075         int tmp;
2076 
2077         ret = toshiba_sleep_functions_status_get(toshiba, &state);
2078         if (ret < 0)
2079                 return ret;
2080 
2081         /* Determine the status: 0x4 - Enabled | 0x1 - Disabled */
2082         tmp = state & SCI_USB_CHARGE_BAT_MASK;
2083         status = (tmp == 0x4) ? 1 : 0;
2084         /* Determine the battery level set */
2085         bat_lvl = state >> HCI_MISC_SHIFT;
2086 
2087         return sprintf(buf, "%d %d\n", status, bat_lvl);
2088 }
2089 
2090 static ssize_t sleep_functions_on_battery_store(struct device *dev,
2091                                                 struct device_attribute *attr,
2092                                                 const char *buf, size_t count)
2093 {
2094         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2095         u32 status;
2096         int value;
2097         int ret;
2098         int tmp;
2099 
2100         ret = kstrtoint(buf, 0, &value);
2101         if (ret)
2102                 return ret;
2103 
2104         /*
2105          * Set the status of the function:
2106          * 0 - Disabled
2107          * 1-100 - Enabled
2108          */
2109         if (value < 0 || value > 100)
2110                 return -EINVAL;
2111 
2112         if (value == 0) {
2113                 tmp = toshiba->usbsc_bat_level << HCI_MISC_SHIFT;
2114                 status = tmp | SCI_USB_CHARGE_BAT_LVL_OFF;
2115         } else {
2116                 tmp = value << HCI_MISC_SHIFT;
2117                 status = tmp | SCI_USB_CHARGE_BAT_LVL_ON;
2118         }
2119         ret = toshiba_sleep_functions_status_set(toshiba, status);
2120         if (ret < 0)
2121                 return ret;
2122 
2123         toshiba->usbsc_bat_level = status >> HCI_MISC_SHIFT;
2124 
2125         return count;
2126 }
2127 static DEVICE_ATTR_RW(sleep_functions_on_battery);
2128 
2129 static ssize_t usb_rapid_charge_show(struct device *dev,
2130                                      struct device_attribute *attr, char *buf)
2131 {
2132         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2133         u32 state;
2134         int ret;
2135 
2136         ret = toshiba_usb_rapid_charge_get(toshiba, &state);
2137         if (ret < 0)
2138                 return ret;
2139 
2140         return sprintf(buf, "%d\n", state);
2141 }
2142 
2143 static ssize_t usb_rapid_charge_store(struct device *dev,
2144                                       struct device_attribute *attr,
2145                                       const char *buf, size_t count)
2146 {
2147         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2148         int state;
2149         int ret;
2150 
2151         ret = kstrtoint(buf, 0, &state);
2152         if (ret)
2153                 return ret;
2154         if (state != 0 && state != 1)
2155                 return -EINVAL;
2156 
2157         ret = toshiba_usb_rapid_charge_set(toshiba, state);
2158         if (ret)
2159                 return ret;
2160 
2161         return count;
2162 }
2163 static DEVICE_ATTR_RW(usb_rapid_charge);
2164 
2165 static ssize_t usb_sleep_music_show(struct device *dev,
2166                                     struct device_attribute *attr, char *buf)
2167 {
2168         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2169         u32 state;
2170         int ret;
2171 
2172         ret = toshiba_usb_sleep_music_get(toshiba, &state);
2173         if (ret < 0)
2174                 return ret;
2175 
2176         return sprintf(buf, "%d\n", state);
2177 }
2178 
2179 static ssize_t usb_sleep_music_store(struct device *dev,
2180                                      struct device_attribute *attr,
2181                                      const char *buf, size_t count)
2182 {
2183         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2184         int state;
2185         int ret;
2186 
2187         ret = kstrtoint(buf, 0, &state);
2188         if (ret)
2189                 return ret;
2190         if (state != 0 && state != 1)
2191                 return -EINVAL;
2192 
2193         ret = toshiba_usb_sleep_music_set(toshiba, state);
2194         if (ret)
2195                 return ret;
2196 
2197         return count;
2198 }
2199 static DEVICE_ATTR_RW(usb_sleep_music);
2200 
2201 static ssize_t kbd_function_keys_show(struct device *dev,
2202                                       struct device_attribute *attr, char *buf)
2203 {
2204         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2205         int mode;
2206         int ret;
2207 
2208         ret = toshiba_function_keys_get(toshiba, &mode);
2209         if (ret < 0)
2210                 return ret;
2211 
2212         return sprintf(buf, "%d\n", mode);
2213 }
2214 
2215 static ssize_t kbd_function_keys_store(struct device *dev,
2216                                        struct device_attribute *attr,
2217                                        const char *buf, size_t count)
2218 {
2219         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2220         int mode;
2221         int ret;
2222 
2223         ret = kstrtoint(buf, 0, &mode);
2224         if (ret)
2225                 return ret;
2226         /*
2227          * Check for the function keys mode where:
2228          * 0 - Normal operation (F{1-12} as usual and hotkeys via FN-F{1-12})
2229          * 1 - Special functions (Opposite of the above setting)
2230          */
2231         if (mode != 0 && mode != 1)
2232                 return -EINVAL;
2233 
2234         ret = toshiba_function_keys_set(toshiba, mode);
2235         if (ret)
2236                 return ret;
2237 
2238         pr_info("Reboot for changes to KBD Function Keys to take effect");
2239 
2240         return count;
2241 }
2242 static DEVICE_ATTR_RW(kbd_function_keys);
2243 
2244 static ssize_t panel_power_on_show(struct device *dev,
2245                                    struct device_attribute *attr, char *buf)
2246 {
2247         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2248         u32 state;
2249         int ret;
2250 
2251         ret = toshiba_panel_power_on_get(toshiba, &state);
2252         if (ret < 0)
2253                 return ret;
2254 
2255         return sprintf(buf, "%d\n", state);
2256 }
2257 
2258 static ssize_t panel_power_on_store(struct device *dev,
2259                                     struct device_attribute *attr,
2260                                     const char *buf, size_t count)
2261 {
2262         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2263         int state;
2264         int ret;
2265 
2266         ret = kstrtoint(buf, 0, &state);
2267         if (ret)
2268                 return ret;
2269         if (state != 0 && state != 1)
2270                 return -EINVAL;
2271 
2272         ret = toshiba_panel_power_on_set(toshiba, state);
2273         if (ret)
2274                 return ret;
2275 
2276         pr_info("Reboot for changes to Panel Power ON to take effect");
2277 
2278         return count;
2279 }
2280 static DEVICE_ATTR_RW(panel_power_on);
2281 
2282 static ssize_t usb_three_show(struct device *dev,
2283                               struct device_attribute *attr, char *buf)
2284 {
2285         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2286         u32 state;
2287         int ret;
2288 
2289         ret = toshiba_usb_three_get(toshiba, &state);
2290         if (ret < 0)
2291                 return ret;
2292 
2293         return sprintf(buf, "%d\n", state);
2294 }
2295 
2296 static ssize_t usb_three_store(struct device *dev,
2297                                struct device_attribute *attr,
2298                                const char *buf, size_t count)
2299 {
2300         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2301         int state;
2302         int ret;
2303 
2304         ret = kstrtoint(buf, 0, &state);
2305         if (ret)
2306                 return ret;
2307         /*
2308          * Check for USB 3 mode where:
2309          * 0 - Disabled (Acts like a USB 2 port, saving power)
2310          * 1 - Enabled
2311          */
2312         if (state != 0 && state != 1)
2313                 return -EINVAL;
2314 
2315         ret = toshiba_usb_three_set(toshiba, state);
2316         if (ret)
2317                 return ret;
2318 
2319         pr_info("Reboot for changes to USB 3 to take effect");
2320 
2321         return count;
2322 }
2323 static DEVICE_ATTR_RW(usb_three);
2324 
2325 static ssize_t cooling_method_show(struct device *dev,
2326                                    struct device_attribute *attr, char *buf)
2327 {
2328         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2329         int state;
2330         int ret;
2331 
2332         ret = toshiba_cooling_method_get(toshiba, &state);
2333         if (ret < 0)
2334                 return ret;
2335 
2336         return sprintf(buf, "%d %d\n", state, toshiba->max_cooling_method);
2337 }
2338 
2339 static ssize_t cooling_method_store(struct device *dev,
2340                                     struct device_attribute *attr,
2341                                     const char *buf, size_t count)
2342 {
2343         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2344         int state;
2345         int ret;
2346 
2347         ret = kstrtoint(buf, 0, &state);
2348         if (ret)
2349                 return ret;
2350 
2351         /*
2352          * Check for supported values
2353          * Depending on the laptop model, some only support these two:
2354          * 0 - Maximum Performance
2355          * 1 - Battery Optimized
2356          *
2357          * While some others support all three methods:
2358          * 0 - Maximum Performance
2359          * 1 - Performance
2360          * 2 - Battery Optimized
2361          */
2362         if (state < 0 || state > toshiba->max_cooling_method)
2363                 return -EINVAL;
2364 
2365         ret = toshiba_cooling_method_set(toshiba, state);
2366         if (ret)
2367                 return ret;
2368 
2369         return count;
2370 }
2371 static DEVICE_ATTR_RW(cooling_method);
2372 
2373 static struct attribute *toshiba_attributes[] = {
2374         &dev_attr_version.attr,
2375         &dev_attr_fan.attr,
2376         &dev_attr_kbd_backlight_mode.attr,
2377         &dev_attr_kbd_type.attr,
2378         &dev_attr_available_kbd_modes.attr,
2379         &dev_attr_kbd_backlight_timeout.attr,
2380         &dev_attr_touchpad.attr,
2381         &dev_attr_usb_sleep_charge.attr,
2382         &dev_attr_sleep_functions_on_battery.attr,
2383         &dev_attr_usb_rapid_charge.attr,
2384         &dev_attr_usb_sleep_music.attr,
2385         &dev_attr_kbd_function_keys.attr,
2386         &dev_attr_panel_power_on.attr,
2387         &dev_attr_usb_three.attr,
2388         &dev_attr_cooling_method.attr,
2389         NULL,
2390 };
2391 
2392 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
2393                                         struct attribute *attr, int idx)
2394 {
2395         struct device *dev = container_of(kobj, struct device, kobj);
2396         struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
2397         bool exists = true;
2398 
2399         if (attr == &dev_attr_fan.attr)
2400                 exists = (drv->fan_supported) ? true : false;
2401         else if (attr == &dev_attr_kbd_backlight_mode.attr)
2402                 exists = (drv->kbd_illum_supported) ? true : false;
2403         else if (attr == &dev_attr_kbd_backlight_timeout.attr)
2404                 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
2405         else if (attr == &dev_attr_touchpad.attr)
2406                 exists = (drv->touchpad_supported) ? true : false;
2407         else if (attr == &dev_attr_usb_sleep_charge.attr)
2408                 exists = (drv->usb_sleep_charge_supported) ? true : false;
2409         else if (attr == &dev_attr_sleep_functions_on_battery.attr)
2410                 exists = (drv->usb_sleep_charge_supported) ? true : false;
2411         else if (attr == &dev_attr_usb_rapid_charge.attr)
2412                 exists = (drv->usb_rapid_charge_supported) ? true : false;
2413         else if (attr == &dev_attr_usb_sleep_music.attr)
2414                 exists = (drv->usb_sleep_music_supported) ? true : false;
2415         else if (attr == &dev_attr_kbd_function_keys.attr)
2416                 exists = (drv->kbd_function_keys_supported) ? true : false;
2417         else if (attr == &dev_attr_panel_power_on.attr)
2418                 exists = (drv->panel_power_on_supported) ? true : false;
2419         else if (attr == &dev_attr_usb_three.attr)
2420                 exists = (drv->usb_three_supported) ? true : false;
2421         else if (attr == &dev_attr_cooling_method.attr)
2422                 exists = (drv->cooling_method_supported) ? true : false;
2423 
2424         return exists ? attr->mode : 0;
2425 }
2426 
2427 static struct attribute_group toshiba_attr_group = {
2428         .is_visible = toshiba_sysfs_is_visible,
2429         .attrs = toshiba_attributes,
2430 };
2431 
2432 static void toshiba_acpi_kbd_bl_work(struct work_struct *work)
2433 {
2434         struct acpi_device *acpi_dev = toshiba_acpi->acpi_dev;
2435 
2436         /* Update the sysfs entries */
2437         if (sysfs_update_group(&acpi_dev->dev.kobj,
2438                                &toshiba_attr_group))
2439                 pr_err("Unable to update sysfs entries\n");
2440 
2441         /* Emulate the keyboard backlight event */
2442         acpi_bus_generate_netlink_event(acpi_dev->pnp.device_class,
2443                                         dev_name(&acpi_dev->dev),
2444                                         0x92, 0);
2445 }
2446 
2447 /*
2448  * IIO device
2449  */
2450 
2451 enum toshiba_iio_accel_chan {
2452         AXIS_X,
2453         AXIS_Y,
2454         AXIS_Z
2455 };
2456 
2457 static int toshiba_iio_accel_get_axis(enum toshiba_iio_accel_chan chan)
2458 {
2459         u32 xyval, zval;
2460         int ret;
2461 
2462         ret = toshiba_accelerometer_get(toshiba_acpi, &xyval, &zval);
2463         if (ret < 0)
2464                 return ret;
2465 
2466         switch (chan) {
2467         case AXIS_X:
2468                 return xyval & HCI_ACCEL_DIRECTION_MASK ?
2469                         -(xyval & HCI_ACCEL_MASK) : xyval & HCI_ACCEL_MASK;
2470         case AXIS_Y:
2471                 return (xyval >> HCI_MISC_SHIFT) & HCI_ACCEL_DIRECTION_MASK ?
2472                         -((xyval >> HCI_MISC_SHIFT) & HCI_ACCEL_MASK) :
2473                         (xyval >> HCI_MISC_SHIFT) & HCI_ACCEL_MASK;
2474         case AXIS_Z:
2475                 return zval & HCI_ACCEL_DIRECTION_MASK ?
2476                         -(zval & HCI_ACCEL_MASK) : zval & HCI_ACCEL_MASK;
2477         }
2478 
2479         return ret;
2480 }
2481 
2482 static int toshiba_iio_accel_read_raw(struct iio_dev *indio_dev,
2483                                       struct iio_chan_spec const *chan,
2484                                       int *val, int *val2, long mask)
2485 {
2486         int ret;
2487 
2488         switch (mask) {
2489         case IIO_CHAN_INFO_RAW:
2490                 ret = toshiba_iio_accel_get_axis(chan->channel);
2491                 if (ret == -EIO || ret == -ENODEV)
2492                         return ret;
2493 
2494                 *val = ret;
2495 
2496                 return IIO_VAL_INT;
2497         }
2498 
2499         return -EINVAL;
2500 }
2501 
2502 #define TOSHIBA_IIO_ACCEL_CHANNEL(axis, chan) { \
2503         .type = IIO_ACCEL, \
2504         .modified = 1, \
2505         .channel = chan, \
2506         .channel2 = IIO_MOD_##axis, \
2507         .output = 1, \
2508         .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
2509 }
2510 
2511 static const struct iio_chan_spec toshiba_iio_accel_channels[] = {
2512         TOSHIBA_IIO_ACCEL_CHANNEL(X, AXIS_X),
2513         TOSHIBA_IIO_ACCEL_CHANNEL(Y, AXIS_Y),
2514         TOSHIBA_IIO_ACCEL_CHANNEL(Z, AXIS_Z),
2515 };
2516 
2517 static const struct iio_info toshiba_iio_accel_info = {
2518         .driver_module = THIS_MODULE,
2519         .read_raw = &toshiba_iio_accel_read_raw,
2520 };
2521 
2522 /*
2523  * Misc device
2524  */
2525 static int toshiba_acpi_smm_bridge(SMMRegisters *regs)
2526 {
2527         u32 in[TCI_WORDS] = { regs->eax, regs->ebx, regs->ecx,
2528                               regs->edx, regs->esi, regs->edi };
2529         u32 out[TCI_WORDS];
2530         acpi_status status;
2531 
2532         status = tci_raw(toshiba_acpi, in, out);
2533         if (ACPI_FAILURE(status)) {
2534                 pr_err("ACPI call to query SMM registers failed\n");
2535                 return -EIO;
2536         }
2537 
2538         /* Fillout the SMM struct with the TCI call results */
2539         regs->eax = out[0];
2540         regs->ebx = out[1];
2541         regs->ecx = out[2];
2542         regs->edx = out[3];
2543         regs->esi = out[4];
2544         regs->edi = out[5];
2545 
2546         return 0;
2547 }
2548 
2549 static long toshiba_acpi_ioctl(struct file *fp, unsigned int cmd,
2550                                unsigned long arg)
2551 {
2552         SMMRegisters __user *argp = (SMMRegisters __user *)arg;
2553         SMMRegisters regs;
2554         int ret;
2555 
2556         if (!argp)
2557                 return -EINVAL;
2558 
2559         switch (cmd) {
2560         case TOSH_SMM:
2561                 if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
2562                         return -EFAULT;
2563                 ret = toshiba_acpi_smm_bridge(&regs);
2564                 if (ret)
2565                         return ret;
2566                 if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
2567                         return -EFAULT;
2568                 break;
2569         case TOSHIBA_ACPI_SCI:
2570                 if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
2571                         return -EFAULT;
2572                 /* Ensure we are being called with a SCI_{GET, SET} register */
2573                 if (regs.eax != SCI_GET && regs.eax != SCI_SET)
2574                         return -EINVAL;
2575                 if (!sci_open(toshiba_acpi))
2576                         return -EIO;
2577                 ret = toshiba_acpi_smm_bridge(&regs);
2578                 sci_close(toshiba_acpi);
2579                 if (ret)
2580                         return ret;
2581                 if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
2582                         return -EFAULT;
2583                 break;
2584         default:
2585                 return -EINVAL;
2586         }
2587 
2588         return 0;
2589 }
2590 
2591 static const struct file_operations toshiba_acpi_fops = {
2592         .owner          = THIS_MODULE,
2593         .unlocked_ioctl = toshiba_acpi_ioctl,
2594         .llseek         = noop_llseek,
2595 };
2596 
2597 /*
2598  * WWAN RFKill handlers
2599  */
2600 static int toshiba_acpi_wwan_set_block(void *data, bool blocked)
2601 {
2602         struct toshiba_acpi_dev *dev = data;
2603         int ret;
2604 
2605         ret = toshiba_wireless_status(dev);
2606         if (ret)
2607                 return ret;
2608 
2609         if (!dev->killswitch)
2610                 return 0;
2611 
2612         return toshiba_wwan_set(dev, !blocked);
2613 }
2614 
2615 static void toshiba_acpi_wwan_poll(struct rfkill *rfkill, void *data)
2616 {
2617         struct toshiba_acpi_dev *dev = data;
2618 
2619         if (toshiba_wireless_status(dev))
2620                 return;
2621 
2622         rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
2623 }
2624 
2625 static const struct rfkill_ops wwan_rfk_ops = {
2626         .set_block = toshiba_acpi_wwan_set_block,
2627         .poll = toshiba_acpi_wwan_poll,
2628 };
2629 
2630 static int toshiba_acpi_setup_wwan_rfkill(struct toshiba_acpi_dev *dev)
2631 {
2632         int ret = toshiba_wireless_status(dev);
2633 
2634         if (ret)
2635                 return ret;
2636 
2637         dev->wwan_rfk = rfkill_alloc("Toshiba WWAN",
2638                                      &dev->acpi_dev->dev,
2639                                      RFKILL_TYPE_WWAN,
2640                                      &wwan_rfk_ops,
2641                                      dev);
2642         if (!dev->wwan_rfk) {
2643                 pr_err("Unable to allocate WWAN rfkill device\n");
2644                 return -ENOMEM;
2645         }
2646 
2647         rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
2648 
2649         ret = rfkill_register(dev->wwan_rfk);
2650         if (ret) {
2651                 pr_err("Unable to register WWAN rfkill device\n");
2652                 rfkill_destroy(dev->wwan_rfk);
2653         }
2654 
2655         return ret;
2656 }
2657 
2658 /*
2659  * Hotkeys
2660  */
2661 static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
2662 {
2663         acpi_status status;
2664         u32 result;
2665 
2666         status = acpi_evaluate_object(dev->acpi_dev->handle,
2667                                       "ENAB", NULL, NULL);
2668         if (ACPI_FAILURE(status))
2669                 return -ENODEV;
2670 
2671         /*
2672          * Enable the "Special Functions" mode only if they are
2673          * supported and if they are activated.
2674          */
2675         if (dev->kbd_function_keys_supported && dev->special_functions)
2676                 result = hci_write(dev, HCI_HOTKEY_EVENT,
2677                                    HCI_HOTKEY_SPECIAL_FUNCTIONS);
2678         else
2679                 result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
2680 
2681         if (result == TOS_FAILURE)
2682                 return -EIO;
2683         else if (result == TOS_NOT_SUPPORTED)
2684                 return -ENODEV;
2685 
2686         return 0;
2687 }
2688 
2689 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
2690                                       struct serio *port)
2691 {
2692         if (str & I8042_STR_AUXDATA)
2693                 return false;
2694 
2695         if (unlikely(data == 0xe0))
2696                 return false;
2697 
2698         if ((data & 0x7f) == TOS1900_FN_SCAN) {
2699                 schedule_work(&toshiba_acpi->hotkey_work);
2700                 return true;
2701         }
2702 
2703         return false;
2704 }
2705 
2706 static void toshiba_acpi_hotkey_work(struct work_struct *work)
2707 {
2708         acpi_handle ec_handle = ec_get_handle();
2709         acpi_status status;
2710 
2711         if (!ec_handle)
2712                 return;
2713 
2714         status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
2715         if (ACPI_FAILURE(status))
2716                 pr_err("ACPI NTFY method execution failed\n");
2717 }
2718 
2719 /*
2720  * Returns hotkey scancode, or < 0 on failure.
2721  */
2722 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
2723 {
2724         unsigned long long value;
2725         acpi_status status;
2726 
2727         status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
2728                                       NULL, &value);
2729         if (ACPI_FAILURE(status)) {
2730                 pr_err("ACPI INFO method execution failed\n");
2731                 return -EIO;
2732         }
2733 
2734         return value;
2735 }
2736 
2737 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
2738                                        int scancode)
2739 {
2740         if (scancode == 0x100)
2741                 return;
2742 
2743         /* Act on key press; ignore key release */
2744         if (scancode & 0x80)
2745                 return;
2746 
2747         if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
2748                 pr_info("Unknown key %x\n", scancode);
2749 }
2750 
2751 static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
2752 {
2753         if (dev->info_supported) {
2754                 int scancode = toshiba_acpi_query_hotkey(dev);
2755 
2756                 if (scancode < 0) {
2757                         pr_err("Failed to query hotkey event\n");
2758                 } else if (scancode != 0) {
2759                         toshiba_acpi_report_hotkey(dev, scancode);
2760                         dev->key_event_valid = 1;
2761                         dev->last_key_event = scancode;
2762                 }
2763         } else if (dev->system_event_supported) {
2764                 u32 result;
2765                 u32 value;
2766                 int retries = 3;
2767 
2768                 do {
2769                         result = hci_read(dev, HCI_SYSTEM_EVENT, &value);
2770                         switch (result) {
2771                         case TOS_SUCCESS:
2772                                 toshiba_acpi_report_hotkey(dev, (int)value);
2773                                 dev->key_event_valid = 1;
2774                                 dev->last_key_event = value;
2775                                 break;
2776                         case TOS_NOT_SUPPORTED:
2777                                 /*
2778                                  * This is a workaround for an unresolved
2779                                  * issue on some machines where system events
2780                                  * sporadically become disabled.
2781                                  */
2782                                 result = hci_write(dev, HCI_SYSTEM_EVENT, 1);
2783                                 if (result == TOS_SUCCESS)
2784                                         pr_notice("Re-enabled hotkeys\n");
2785                                 /* Fall through */
2786                         default:
2787                                 retries--;
2788                                 break;
2789                         }
2790                 } while (retries && result != TOS_FIFO_EMPTY);
2791         }
2792 }
2793 
2794 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
2795 {
2796         const struct key_entry *keymap = toshiba_acpi_keymap;
2797         acpi_handle ec_handle;
2798         int error;
2799 
2800         if (disable_hotkeys) {
2801                 pr_info("Hotkeys disabled by module parameter\n");
2802                 return 0;
2803         }
2804 
2805         if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID)) {
2806                 pr_info("WMI event detected, hotkeys will not be monitored\n");
2807                 return 0;
2808         }
2809 
2810         error = toshiba_acpi_enable_hotkeys(dev);
2811         if (error)
2812                 return error;
2813 
2814         if (toshiba_hotkey_event_type_get(dev, &dev->hotkey_event_type))
2815                 pr_notice("Unable to query Hotkey Event Type\n");
2816 
2817         dev->hotkey_dev = input_allocate_device();
2818         if (!dev->hotkey_dev)
2819                 return -ENOMEM;
2820 
2821         dev->hotkey_dev->name = "Toshiba input device";
2822         dev->hotkey_dev->phys = "toshiba_acpi/input0";
2823         dev->hotkey_dev->id.bustype = BUS_HOST;
2824 
2825         if (dev->hotkey_event_type == HCI_SYSTEM_TYPE1 ||
2826             !dev->kbd_function_keys_supported)
2827                 keymap = toshiba_acpi_keymap;
2828         else if (dev->hotkey_event_type == HCI_SYSTEM_TYPE2 ||
2829                  dev->kbd_function_keys_supported)
2830                 keymap = toshiba_acpi_alt_keymap;
2831         else
2832                 pr_info("Unknown event type received %x\n",
2833                         dev->hotkey_event_type);
2834         error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
2835         if (error)
2836                 goto err_free_dev;
2837 
2838         /*
2839          * For some machines the SCI responsible for providing hotkey
2840          * notification doesn't fire. We can trigger the notification
2841          * whenever the Fn key is pressed using the NTFY method, if
2842          * supported, so if it's present set up an i8042 key filter
2843          * for this purpose.
2844          */
2845         ec_handle = ec_get_handle();
2846         if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
2847                 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
2848 
2849                 error = i8042_install_filter(toshiba_acpi_i8042_filter);
2850                 if (error) {
2851                         pr_err("Error installing key filter\n");
2852                         goto err_free_keymap;
2853                 }
2854 
2855                 dev->ntfy_supported = 1;
2856         }
2857 
2858         /*
2859          * Determine hotkey query interface. Prefer using the INFO
2860          * method when it is available.
2861          */
2862         if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
2863                 dev->info_supported = 1;
2864         else if (hci_write(dev, HCI_SYSTEM_EVENT, 1) == TOS_SUCCESS)
2865                 dev->system_event_supported = 1;
2866 
2867         if (!dev->info_supported && !dev->system_event_supported) {
2868                 pr_warn("No hotkey query interface found\n");
2869                 goto err_remove_filter;
2870         }
2871 
2872         error = input_register_device(dev->hotkey_dev);
2873         if (error) {
2874                 pr_info("Unable to register input device\n");
2875                 goto err_remove_filter;
2876         }
2877 
2878         return 0;
2879 
2880  err_remove_filter:
2881         if (dev->ntfy_supported)
2882                 i8042_remove_filter(toshiba_acpi_i8042_filter);
2883  err_free_keymap:
2884         sparse_keymap_free(dev->hotkey_dev);
2885  err_free_dev:
2886         input_free_device(dev->hotkey_dev);
2887         dev->hotkey_dev = NULL;
2888         return error;
2889 }
2890 
2891 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
2892 {
2893         struct backlight_properties props;
2894         int brightness;
2895         int ret;
2896 
2897         /*
2898          * Some machines don't support the backlight methods at all, and
2899          * others support it read-only. Either of these is pretty useless,
2900          * so only register the backlight device if the backlight method
2901          * supports both reads and writes.
2902          */
2903         brightness = __get_lcd_brightness(dev);
2904         if (brightness < 0)
2905                 return 0;
2906         /*
2907          * If transflective backlight is supported and the brightness is zero
2908          * (lowest brightness level), the set_lcd_brightness function will
2909          * activate the transflective backlight, making the LCD appear to be
2910          * turned off, simply increment the brightness level to avoid that.
2911          */
2912         if (dev->tr_backlight_supported && brightness == 0)
2913                 brightness++;
2914         ret = set_lcd_brightness(dev, brightness);
2915         if (ret) {
2916                 pr_debug("Backlight method is read-only, disabling backlight support\n");
2917                 return 0;
2918         }
2919 
2920         /*
2921          * Tell acpi-video-detect code to prefer vendor backlight on all
2922          * systems with transflective backlight and on dmi matched systems.
2923          */
2924         if (dev->tr_backlight_supported ||
2925             dmi_check_system(toshiba_vendor_backlight_dmi))
2926                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2927 
2928         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2929                 return 0;
2930 
2931         memset(&props, 0, sizeof(props));
2932         props.type = BACKLIGHT_PLATFORM;
2933         props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
2934 
2935         /* Adding an extra level and having 0 change to transflective mode */
2936         if (dev->tr_backlight_supported)
2937                 props.max_brightness++;
2938 
2939         dev->backlight_dev = backlight_device_register("toshiba",
2940                                                        &dev->acpi_dev->dev,
2941                                                        dev,
2942                                                        &toshiba_backlight_data,
2943                                                        &props);
2944         if (IS_ERR(dev->backlight_dev)) {
2945                 ret = PTR_ERR(dev->backlight_dev);
2946                 pr_err("Could not register toshiba backlight device\n");
2947                 dev->backlight_dev = NULL;
2948                 return ret;
2949         }
2950 
2951         dev->backlight_dev->props.brightness = brightness;
2952         return 0;
2953 }
2954 
2955 static void print_supported_features(struct toshiba_acpi_dev *dev)
2956 {
2957         pr_info("Supported laptop features:");
2958 
2959         if (dev->hotkey_dev)
2960                 pr_cont(" hotkeys");
2961         if (dev->backlight_dev)
2962                 pr_cont(" backlight");
2963         if (dev->video_supported)
2964                 pr_cont(" video-out");
2965         if (dev->fan_supported)
2966                 pr_cont(" fan");
2967         if (dev->tr_backlight_supported)
2968                 pr_cont(" transflective-backlight");
2969         if (dev->illumination_supported)
2970                 pr_cont(" illumination");
2971         if (dev->kbd_illum_supported)
2972                 pr_cont(" keyboard-backlight");
2973         if (dev->touchpad_supported)
2974                 pr_cont(" touchpad");
2975         if (dev->eco_supported)
2976                 pr_cont(" eco-led");
2977         if (dev->accelerometer_supported)
2978                 pr_cont(" accelerometer-axes");
2979         if (dev->usb_sleep_charge_supported)
2980                 pr_cont(" usb-sleep-charge");
2981         if (dev->usb_rapid_charge_supported)
2982                 pr_cont(" usb-rapid-charge");
2983         if (dev->usb_sleep_music_supported)
2984                 pr_cont(" usb-sleep-music");
2985         if (dev->kbd_function_keys_supported)
2986                 pr_cont(" special-function-keys");
2987         if (dev->panel_power_on_supported)
2988                 pr_cont(" panel-power-on");
2989         if (dev->usb_three_supported)
2990                 pr_cont(" usb3");
2991         if (dev->wwan_supported)
2992                 pr_cont(" wwan");
2993         if (dev->cooling_method_supported)
2994                 pr_cont(" cooling-method");
2995 
2996         pr_cont("\n");
2997 }
2998 
2999 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
3000 {
3001         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
3002 
3003         misc_deregister(&dev->miscdev);
3004 
3005         remove_toshiba_proc_entries(dev);
3006 
3007         if (dev->accelerometer_supported && dev->indio_dev) {
3008                 iio_device_unregister(dev->indio_dev);
3009                 iio_device_free(dev->indio_dev);
3010         }
3011 
3012         if (dev->sysfs_created)
3013                 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
3014                                    &toshiba_attr_group);
3015 
3016         if (dev->ntfy_supported) {
3017                 i8042_remove_filter(toshiba_acpi_i8042_filter);
3018                 cancel_work_sync(&dev->hotkey_work);
3019         }
3020 
3021         if (dev->hotkey_dev) {
3022                 input_unregister_device(dev->hotkey_dev);
3023                 sparse_keymap_free(dev->hotkey_dev);
3024         }
3025 
3026         backlight_device_unregister(dev->backlight_dev);
3027 
3028         if (dev->illumination_led_registered)
3029                 led_classdev_unregister(&dev->led_dev);
3030 
3031         if (dev->kbd_led_registered)
3032                 led_classdev_unregister(&dev->kbd_led);
3033 
3034         if (dev->eco_led_registered)
3035                 led_classdev_unregister(&dev->eco_led);
3036 
3037         if (dev->wwan_rfk) {
3038                 rfkill_unregister(dev->wwan_rfk);
3039                 rfkill_destroy(dev->wwan_rfk);
3040         }
3041 
3042         if (toshiba_acpi)
3043                 toshiba_acpi = NULL;
3044 
3045         kfree(dev);
3046 
3047         return 0;
3048 }
3049 
3050 static const char *find_hci_method(acpi_handle handle)
3051 {
3052         if (acpi_has_method(handle, "GHCI"))
3053                 return "GHCI";
3054 
3055         if (acpi_has_method(handle, "SPFC"))
3056                 return "SPFC";
3057 
3058         return NULL;
3059 }
3060 
3061 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
3062 {
3063         struct toshiba_acpi_dev *dev;
3064         const char *hci_method;
3065         u32 dummy;
3066         int ret = 0;
3067 
3068         if (toshiba_acpi)
3069                 return -EBUSY;
3070 
3071         pr_info("Toshiba Laptop ACPI Extras version %s\n",
3072                TOSHIBA_ACPI_VERSION);
3073 
3074         hci_method = find_hci_method(acpi_dev->handle);
3075         if (!hci_method) {
3076                 pr_err("HCI interface not found\n");
3077                 return -ENODEV;
3078         }
3079 
3080         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
3081         if (!dev)
3082                 return -ENOMEM;
3083         dev->acpi_dev = acpi_dev;
3084         dev->method_hci = hci_method;
3085         dev->miscdev.minor = MISC_DYNAMIC_MINOR;
3086         dev->miscdev.name = "toshiba_acpi";
3087         dev->miscdev.fops = &toshiba_acpi_fops;
3088 
3089         ret = misc_register(&dev->miscdev);
3090         if (ret) {
3091                 pr_err("Failed to register miscdevice\n");
3092                 kfree(dev);
3093                 return ret;
3094         }
3095 
3096         acpi_dev->driver_data = dev;
3097         dev_set_drvdata(&acpi_dev->dev, dev);
3098 
3099         /* Query the BIOS for supported features */
3100 
3101         /*
3102          * The "Special Functions" are always supported by the laptops
3103          * with the new keyboard layout, query for its presence to help
3104          * determine the keymap layout to use.
3105          */
3106         ret = toshiba_function_keys_get(dev, &dev->special_functions);
3107         dev->kbd_function_keys_supported = !ret;
3108 
3109         dev->hotkey_event_type = 0;
3110         if (toshiba_acpi_setup_keyboard(dev))
3111                 pr_info("Unable to activate hotkeys\n");
3112 
3113         /* Determine whether or not BIOS supports transflective backlight */
3114         ret = get_tr_backlight_status(dev, &dummy);
3115         dev->tr_backlight_supported = !ret;
3116 
3117         ret = toshiba_acpi_setup_backlight(dev);
3118         if (ret)
3119                 goto error;
3120 
3121         toshiba_illumination_available(dev);
3122         if (dev->illumination_supported) {
3123                 dev->led_dev.name = "toshiba::illumination";
3124                 dev->led_dev.max_brightness = 1;
3125                 dev->led_dev.brightness_set = toshiba_illumination_set;
3126                 dev->led_dev.brightness_get = toshiba_illumination_get;
3127                 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
3128                         dev->illumination_led_registered = true;
3129         }
3130 
3131         toshiba_eco_mode_available(dev);
3132         if (dev->eco_supported) {
3133                 dev->eco_led.name = "toshiba::eco_mode";
3134                 dev->eco_led.max_brightness = 1;
3135                 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
3136                 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
3137                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
3138                         dev->eco_led_registered = true;
3139         }
3140 
3141         toshiba_kbd_illum_available(dev);
3142         /*
3143          * Only register the LED if KBD illumination is supported
3144          * and the keyboard backlight operation mode is set to FN-Z
3145          */
3146         if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
3147                 dev->kbd_led.name = "toshiba::kbd_backlight";
3148                 dev->kbd_led.max_brightness = 1;
3149                 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
3150                 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
3151                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
3152                         dev->kbd_led_registered = true;
3153         }
3154 
3155         ret = toshiba_touchpad_get(dev, &dummy);
3156         dev->touchpad_supported = !ret;
3157 
3158         toshiba_accelerometer_available(dev);
3159         if (dev->accelerometer_supported) {
3160                 dev->indio_dev = iio_device_alloc(sizeof(*dev));
3161                 if (!dev->indio_dev) {
3162                         pr_err("Unable to allocate iio device\n");
3163                         goto iio_error;
3164                 }
3165 
3166                 pr_info("Registering Toshiba accelerometer iio device\n");
3167 
3168                 dev->indio_dev->info = &toshiba_iio_accel_info;
3169                 dev->indio_dev->name = "Toshiba accelerometer";
3170                 dev->indio_dev->dev.parent = &acpi_dev->dev;
3171                 dev->indio_dev->modes = INDIO_DIRECT_MODE;
3172                 dev->indio_dev->channels = toshiba_iio_accel_channels;
3173                 dev->indio_dev->num_channels =
3174                                         ARRAY_SIZE(toshiba_iio_accel_channels);
3175 
3176                 ret = iio_device_register(dev->indio_dev);
3177                 if (ret < 0) {
3178                         pr_err("Unable to register iio device\n");
3179                         iio_device_free(dev->indio_dev);
3180                 }
3181         }
3182 iio_error:
3183 
3184         toshiba_usb_sleep_charge_available(dev);
3185 
3186         ret = toshiba_usb_rapid_charge_get(dev, &dummy);
3187         dev->usb_rapid_charge_supported = !ret;
3188 
3189         ret = toshiba_usb_sleep_music_get(dev, &dummy);
3190         dev->usb_sleep_music_supported = !ret;
3191 
3192         ret = toshiba_panel_power_on_get(dev, &dummy);
3193         dev->panel_power_on_supported = !ret;
3194 
3195         ret = toshiba_usb_three_get(dev, &dummy);
3196         dev->usb_three_supported = !ret;
3197 
3198         ret = get_video_status(dev, &dummy);
3199         dev->video_supported = !ret;
3200 
3201         ret = get_fan_status(dev, &dummy);
3202         dev->fan_supported = !ret;
3203 
3204         toshiba_wwan_available(dev);
3205         if (dev->wwan_supported)
3206                 toshiba_acpi_setup_wwan_rfkill(dev);
3207 
3208         toshiba_cooling_method_available(dev);
3209 
3210         print_supported_features(dev);
3211 
3212         ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
3213                                  &toshiba_attr_group);
3214         if (ret) {
3215                 dev->sysfs_created = 0;
3216                 goto error;
3217         }
3218         dev->sysfs_created = !ret;
3219 
3220         create_toshiba_proc_entries(dev);
3221 
3222         toshiba_acpi = dev;
3223 
3224         return 0;
3225 
3226 error:
3227         toshiba_acpi_remove(acpi_dev);
3228         return ret;
3229 }
3230 
3231 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
3232 {
3233         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
3234 
3235         switch (event) {
3236         case 0x80: /* Hotkeys and some system events */
3237                 /*
3238                  * Machines with this WMI GUID aren't supported due to bugs in
3239                  * their AML.
3240                  *
3241                  * Return silently to avoid triggering a netlink event.
3242                  */
3243                 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
3244                         return;
3245                 toshiba_acpi_process_hotkeys(dev);
3246                 break;
3247         case 0x81: /* Dock events */
3248         case 0x82:
3249         case 0x83:
3250                 pr_info("Dock event received %x\n", event);
3251                 break;
3252         case 0x88: /* Thermal events */
3253                 pr_info("Thermal event received\n");
3254                 break;
3255         case 0x8f: /* LID closed */
3256         case 0x90: /* LID is closed and Dock has been ejected */
3257                 break;
3258         case 0x8c: /* SATA power events */
3259         case 0x8b:
3260                 pr_info("SATA power event received %x\n", event);
3261                 break;
3262         case 0x92: /* Keyboard backlight mode changed */
3263                 toshiba_acpi->kbd_event_generated = true;
3264                 /* Update sysfs entries */
3265                 if (sysfs_update_group(&acpi_dev->dev.kobj,
3266                                        &toshiba_attr_group))
3267                         pr_err("Unable to update sysfs entries\n");
3268                 break;
3269         case 0x85: /* Unknown */
3270         case 0x8d: /* Unknown */
3271         case 0x8e: /* Unknown */
3272         case 0x94: /* Unknown */
3273         case 0x95: /* Unknown */
3274         default:
3275                 pr_info("Unknown event received %x\n", event);
3276                 break;
3277         }
3278 
3279         acpi_bus_generate_netlink_event(acpi_dev->pnp.device_class,
3280                                         dev_name(&acpi_dev->dev),
3281                                         event, (event == 0x80) ?
3282                                         dev->last_key_event : 0);
3283 }
3284 
3285 #ifdef CONFIG_PM_SLEEP
3286 static int toshiba_acpi_suspend(struct device *device)
3287 {
3288         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
3289 
3290         if (dev->hotkey_dev) {
3291                 u32 result;
3292 
3293                 result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
3294                 if (result != TOS_SUCCESS)
3295                         pr_info("Unable to disable hotkeys\n");
3296         }
3297 
3298         return 0;
3299 }
3300 
3301 static int toshiba_acpi_resume(struct device *device)
3302 {
3303         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
3304 
3305         if (dev->hotkey_dev) {
3306                 if (toshiba_acpi_enable_hotkeys(dev))
3307                         pr_info("Unable to re-enable hotkeys\n");
3308         }
3309 
3310         if (dev->wwan_rfk) {
3311                 if (!toshiba_wireless_status(dev))
3312                         rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
3313         }
3314 
3315         return 0;
3316 }
3317 #endif
3318 
3319 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
3320                          toshiba_acpi_suspend, toshiba_acpi_resume);
3321 
3322 static struct acpi_driver toshiba_acpi_driver = {
3323         .name   = "Toshiba ACPI driver",
3324         .owner  = THIS_MODULE,
3325         .ids    = toshiba_device_ids,
3326         .flags  = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
3327         .ops    = {
3328                 .add            = toshiba_acpi_add,
3329                 .remove         = toshiba_acpi_remove,
3330                 .notify         = toshiba_acpi_notify,
3331         },
3332         .drv.pm = &toshiba_acpi_pm,
3333 };
3334 
3335 static int __init toshiba_acpi_init(void)
3336 {
3337         int ret;
3338 
3339         toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
3340         if (!toshiba_proc_dir) {
3341                 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
3342                 return -ENODEV;
3343         }
3344 
3345         ret = acpi_bus_register_driver(&toshiba_acpi_driver);
3346         if (ret) {
3347                 pr_err("Failed to register ACPI driver: %d\n", ret);
3348                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
3349         }
3350 
3351         return ret;
3352 }
3353 
3354 static void __exit toshiba_acpi_exit(void)
3355 {
3356         acpi_bus_unregister_driver(&toshiba_acpi_driver);
3357         if (toshiba_proc_dir)
3358                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
3359 }
3360 
3361 module_init(toshiba_acpi_init);
3362 module_exit(toshiba_acpi_exit);
3363 

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