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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) 2014-2015 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    "0.23"
 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/toshiba.h>
 57 #include <acpi/video.h>
 58 
 59 MODULE_AUTHOR("John Belmonte");
 60 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
 61 MODULE_LICENSE("GPL");
 62 
 63 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
 64 
 65 /* Scan code for Fn key on TOS1900 models */
 66 #define TOS1900_FN_SCAN         0x6e
 67 
 68 /* Toshiba ACPI method paths */
 69 #define METHOD_VIDEO_OUT        "\\_SB_.VALX.DSSX"
 70 
 71 /*
 72  * The Toshiba configuration interface is composed of the HCI and the SCI,
 73  * which are defined as follows:
 74  *
 75  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
 76  * be uniform across all their models.  Ideally we would just call
 77  * dedicated ACPI methods instead of using this primitive interface.
 78  * However the ACPI methods seem to be incomplete in some areas (for
 79  * example they allow setting, but not reading, the LCD brightness value),
 80  * so this is still useful.
 81  *
 82  * SCI stands for "System Configuration Interface" which aim is to
 83  * conceal differences in hardware between different models.
 84  */
 85 
 86 #define TCI_WORDS                       6
 87 
 88 /* Operations */
 89 #define HCI_SET                         0xff00
 90 #define HCI_GET                         0xfe00
 91 #define SCI_OPEN                        0xf100
 92 #define SCI_CLOSE                       0xf200
 93 #define SCI_GET                         0xf300
 94 #define SCI_SET                         0xf400
 95 
 96 /* Return codes */
 97 #define TOS_SUCCESS                     0x0000
 98 #define TOS_SUCCESS2                    0x0001
 99 #define TOS_OPEN_CLOSE_OK               0x0044
100 #define TOS_FAILURE                     0x1000
101 #define TOS_NOT_SUPPORTED               0x8000
102 #define TOS_ALREADY_OPEN                0x8100
103 #define TOS_NOT_OPENED                  0x8200
104 #define TOS_INPUT_DATA_ERROR            0x8300
105 #define TOS_WRITE_PROTECTED             0x8400
106 #define TOS_NOT_PRESENT                 0x8600
107 #define TOS_FIFO_EMPTY                  0x8c00
108 #define TOS_DATA_NOT_AVAILABLE          0x8d20
109 #define TOS_NOT_INITIALIZED             0x8d50
110 #define TOS_NOT_INSTALLED               0x8e00
111 
112 /* Registers */
113 #define HCI_FAN                         0x0004
114 #define HCI_TR_BACKLIGHT                0x0005
115 #define HCI_SYSTEM_EVENT                0x0016
116 #define HCI_VIDEO_OUT                   0x001c
117 #define HCI_HOTKEY_EVENT                0x001e
118 #define HCI_LCD_BRIGHTNESS              0x002a
119 #define HCI_WIRELESS                    0x0056
120 #define HCI_ACCELEROMETER               0x006d
121 #define HCI_COOLING_METHOD              0x007f
122 #define HCI_KBD_ILLUMINATION            0x0095
123 #define HCI_ECO_MODE                    0x0097
124 #define HCI_ACCELEROMETER2              0x00a6
125 #define HCI_SYSTEM_INFO                 0xc000
126 #define SCI_PANEL_POWER_ON              0x010d
127 #define SCI_ILLUMINATION                0x014e
128 #define SCI_USB_SLEEP_CHARGE            0x0150
129 #define SCI_KBD_ILLUM_STATUS            0x015c
130 #define SCI_USB_SLEEP_MUSIC             0x015e
131 #define SCI_USB_THREE                   0x0169
132 #define SCI_TOUCHPAD                    0x050e
133 #define SCI_KBD_FUNCTION_KEYS           0x0522
134 
135 /* Field definitions */
136 #define HCI_ACCEL_MASK                  0x7fff
137 #define HCI_HOTKEY_DISABLE              0x0b
138 #define HCI_HOTKEY_ENABLE               0x09
139 #define HCI_HOTKEY_SPECIAL_FUNCTIONS    0x10
140 #define HCI_LCD_BRIGHTNESS_BITS         3
141 #define HCI_LCD_BRIGHTNESS_SHIFT        (16-HCI_LCD_BRIGHTNESS_BITS)
142 #define HCI_LCD_BRIGHTNESS_LEVELS       (1 << HCI_LCD_BRIGHTNESS_BITS)
143 #define HCI_MISC_SHIFT                  0x10
144 #define HCI_SYSTEM_TYPE1                0x10
145 #define HCI_SYSTEM_TYPE2                0x11
146 #define HCI_VIDEO_OUT_LCD               0x1
147 #define HCI_VIDEO_OUT_CRT               0x2
148 #define HCI_VIDEO_OUT_TV                0x4
149 #define SCI_KBD_MODE_MASK               0x1f
150 #define SCI_KBD_MODE_FNZ                0x1
151 #define SCI_KBD_MODE_AUTO               0x2
152 #define SCI_KBD_MODE_ON                 0x8
153 #define SCI_KBD_MODE_OFF                0x10
154 #define SCI_KBD_TIME_MAX                0x3c001a
155 #define HCI_WIRELESS_STATUS             0x1
156 #define HCI_WIRELESS_WWAN               0x3
157 #define HCI_WIRELESS_WWAN_STATUS        0x2000
158 #define HCI_WIRELESS_WWAN_POWER         0x4000
159 #define SCI_USB_CHARGE_MODE_MASK        0xff
160 #define SCI_USB_CHARGE_DISABLED         0x00
161 #define SCI_USB_CHARGE_ALTERNATE        0x09
162 #define SCI_USB_CHARGE_TYPICAL          0x11
163 #define SCI_USB_CHARGE_AUTO             0x21
164 #define SCI_USB_CHARGE_BAT_MASK         0x7
165 #define SCI_USB_CHARGE_BAT_LVL_OFF      0x1
166 #define SCI_USB_CHARGE_BAT_LVL_ON       0x4
167 #define SCI_USB_CHARGE_BAT_LVL          0x0200
168 #define SCI_USB_CHARGE_RAPID_DSP        0x0300
169 
170 struct toshiba_acpi_dev {
171         struct acpi_device *acpi_dev;
172         const char *method_hci;
173         struct input_dev *hotkey_dev;
174         struct work_struct hotkey_work;
175         struct backlight_device *backlight_dev;
176         struct led_classdev led_dev;
177         struct led_classdev kbd_led;
178         struct led_classdev eco_led;
179         struct miscdevice miscdev;
180         struct rfkill *wwan_rfk;
181 
182         int force_fan;
183         int last_key_event;
184         int key_event_valid;
185         int kbd_type;
186         int kbd_mode;
187         int kbd_time;
188         int usbsc_bat_level;
189         int usbsc_mode_base;
190         int hotkey_event_type;
191         int max_cooling_method;
192 
193         unsigned int illumination_supported:1;
194         unsigned int video_supported:1;
195         unsigned int fan_supported:1;
196         unsigned int system_event_supported:1;
197         unsigned int ntfy_supported:1;
198         unsigned int info_supported:1;
199         unsigned int tr_backlight_supported:1;
200         unsigned int kbd_illum_supported:1;
201         unsigned int touchpad_supported:1;
202         unsigned int eco_supported:1;
203         unsigned int accelerometer_supported:1;
204         unsigned int usb_sleep_charge_supported:1;
205         unsigned int usb_rapid_charge_supported:1;
206         unsigned int usb_sleep_music_supported:1;
207         unsigned int kbd_function_keys_supported:1;
208         unsigned int panel_power_on_supported:1;
209         unsigned int usb_three_supported:1;
210         unsigned int wwan_supported:1;
211         unsigned int cooling_method_supported:1;
212         unsigned int sysfs_created:1;
213         unsigned int special_functions;
214 
215         bool kbd_event_generated;
216         bool kbd_led_registered;
217         bool illumination_led_registered;
218         bool eco_led_registered;
219         bool killswitch;
220 };
221 
222 static struct toshiba_acpi_dev *toshiba_acpi;
223 
224 static bool disable_hotkeys;
225 module_param(disable_hotkeys, bool, 0444);
226 MODULE_PARM_DESC(disable_hotkeys, "Disables the hotkeys activation");
227 
228 static const struct acpi_device_id toshiba_device_ids[] = {
229         {"TOS6200", 0},
230         {"TOS6207", 0},
231         {"TOS6208", 0},
232         {"TOS1900", 0},
233         {"", 0},
234 };
235 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
236 
237 static const struct key_entry toshiba_acpi_keymap[] = {
238         { KE_KEY, 0x9e, { KEY_RFKILL } },
239         { KE_KEY, 0x101, { KEY_MUTE } },
240         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
241         { KE_KEY, 0x103, { KEY_ZOOMIN } },
242         { KE_KEY, 0x10f, { KEY_TAB } },
243         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
244         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
245         { KE_KEY, 0x13b, { KEY_COFFEE } },
246         { KE_KEY, 0x13c, { KEY_BATTERY } },
247         { KE_KEY, 0x13d, { KEY_SLEEP } },
248         { KE_KEY, 0x13e, { KEY_SUSPEND } },
249         { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
250         { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
251         { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
252         { KE_KEY, 0x142, { KEY_WLAN } },
253         { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
254         { KE_KEY, 0x17f, { KEY_FN } },
255         { KE_KEY, 0xb05, { KEY_PROG2 } },
256         { KE_KEY, 0xb06, { KEY_WWW } },
257         { KE_KEY, 0xb07, { KEY_MAIL } },
258         { KE_KEY, 0xb30, { KEY_STOP } },
259         { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
260         { KE_KEY, 0xb32, { KEY_NEXTSONG } },
261         { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
262         { KE_KEY, 0xb5a, { KEY_MEDIA } },
263         { KE_IGNORE, 0x1430, { KEY_RESERVED } }, /* Wake from sleep */
264         { KE_IGNORE, 0x1501, { KEY_RESERVED } }, /* Output changed */
265         { KE_IGNORE, 0x1502, { KEY_RESERVED } }, /* HDMI plugged/unplugged */
266         { KE_IGNORE, 0x1ABE, { KEY_RESERVED } }, /* Protection level set */
267         { KE_IGNORE, 0x1ABF, { KEY_RESERVED } }, /* Protection level off */
268         { KE_END, 0 },
269 };
270 
271 static const struct key_entry toshiba_acpi_alt_keymap[] = {
272         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
273         { KE_KEY, 0x103, { KEY_ZOOMIN } },
274         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
275         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
276         { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
277         { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
278         { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
279         { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
280         { KE_KEY, 0x157, { KEY_MUTE } },
281         { KE_KEY, 0x158, { KEY_WLAN } },
282         { KE_END, 0 },
283 };
284 
285 /*
286  * List of models which have a broken acpi-video backlight interface and thus
287  * need to use the toshiba (vendor) interface instead.
288  */
289 static const struct dmi_system_id toshiba_vendor_backlight_dmi[] = {
290         {}
291 };
292 
293 /*
294  * Utility
295  */
296 
297 static inline void _set_bit(u32 *word, u32 mask, int value)
298 {
299         *word = (*word & ~mask) | (mask * value);
300 }
301 
302 /*
303  * ACPI interface wrappers
304  */
305 
306 static int write_acpi_int(const char *methodName, int val)
307 {
308         acpi_status status;
309 
310         status = acpi_execute_simple_method(NULL, (char *)methodName, val);
311         return (status == AE_OK) ? 0 : -EIO;
312 }
313 
314 /*
315  * Perform a raw configuration call.  Here we don't care about input or output
316  * buffer format.
317  */
318 static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
319                            const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
320 {
321         struct acpi_object_list params;
322         union acpi_object in_objs[TCI_WORDS];
323         struct acpi_buffer results;
324         union acpi_object out_objs[TCI_WORDS + 1];
325         acpi_status status;
326         int i;
327 
328         params.count = TCI_WORDS;
329         params.pointer = in_objs;
330         for (i = 0; i < TCI_WORDS; ++i) {
331                 in_objs[i].type = ACPI_TYPE_INTEGER;
332                 in_objs[i].integer.value = in[i];
333         }
334 
335         results.length = sizeof(out_objs);
336         results.pointer = out_objs;
337 
338         status = acpi_evaluate_object(dev->acpi_dev->handle,
339                                       (char *)dev->method_hci, &params,
340                                       &results);
341         if ((status == AE_OK) && (out_objs->package.count <= TCI_WORDS)) {
342                 for (i = 0; i < out_objs->package.count; ++i)
343                         out[i] = out_objs->package.elements[i].integer.value;
344         }
345 
346         return status;
347 }
348 
349 /*
350  * Common hci tasks
351  *
352  * In addition to the ACPI status, the HCI system returns a result which
353  * may be useful (such as "not supported").
354  */
355 
356 static u32 hci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
357 {
358         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
359         u32 out[TCI_WORDS];
360         acpi_status status = tci_raw(dev, in, out);
361 
362         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
363 }
364 
365 static u32 hci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
366 {
367         u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
368         u32 out[TCI_WORDS];
369         acpi_status status = tci_raw(dev, in, out);
370 
371         if (ACPI_FAILURE(status))
372                 return TOS_FAILURE;
373 
374         *out1 = out[2];
375 
376         return out[0];
377 }
378 
379 /*
380  * Common sci tasks
381  */
382 
383 static int sci_open(struct toshiba_acpi_dev *dev)
384 {
385         u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
386         u32 out[TCI_WORDS];
387         acpi_status status;
388 
389         status = tci_raw(dev, in, out);
390         if  (ACPI_FAILURE(status)) {
391                 pr_err("ACPI call to open SCI failed\n");
392                 return 0;
393         }
394 
395         if (out[0] == TOS_OPEN_CLOSE_OK) {
396                 return 1;
397         } else if (out[0] == TOS_ALREADY_OPEN) {
398                 pr_info("Toshiba SCI already opened\n");
399                 return 1;
400         } else if (out[0] == TOS_NOT_SUPPORTED) {
401                 /*
402                  * Some BIOSes do not have the SCI open/close functions
403                  * implemented and return 0x8000 (Not Supported), failing to
404                  * register some supported features.
405                  *
406                  * Simply return 1 if we hit those affected laptops to make the
407                  * supported features work.
408                  *
409                  * In the case that some laptops really do not support the SCI,
410                  * all the SCI dependent functions check for TOS_NOT_SUPPORTED,
411                  * and thus, not registering support for the queried feature.
412                  */
413                 return 1;
414         } else if (out[0] == TOS_NOT_PRESENT) {
415                 pr_info("Toshiba SCI is not present\n");
416         }
417 
418         return 0;
419 }
420 
421 static void sci_close(struct toshiba_acpi_dev *dev)
422 {
423         u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
424         u32 out[TCI_WORDS];
425         acpi_status status;
426 
427         status = tci_raw(dev, in, out);
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         else if (out[0] == TOS_SUCCESS)
482                 dev->illumination_supported = 1;
483 }
484 
485 static void toshiba_illumination_set(struct led_classdev *cdev,
486                                      enum led_brightness brightness)
487 {
488         struct toshiba_acpi_dev *dev = container_of(cdev,
489                         struct toshiba_acpi_dev, led_dev);
490         u32 result;
491         u32 state;
492 
493         /* First request : initialize communication. */
494         if (!sci_open(dev))
495                 return;
496 
497         /* Switch the illumination on/off */
498         state = brightness ? 1 : 0;
499         result = sci_write(dev, SCI_ILLUMINATION, state);
500         sci_close(dev);
501         if (result == TOS_FAILURE)
502                 pr_err("ACPI call for illumination failed\n");
503 }
504 
505 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
506 {
507         struct toshiba_acpi_dev *dev = container_of(cdev,
508                         struct toshiba_acpi_dev, led_dev);
509         u32 state, result;
510 
511         /* First request : initialize communication. */
512         if (!sci_open(dev))
513                 return LED_OFF;
514 
515         /* Check the illumination */
516         result = sci_read(dev, SCI_ILLUMINATION, &state);
517         sci_close(dev);
518         if (result == TOS_FAILURE) {
519                 pr_err("ACPI call for illumination failed\n");
520                 return LED_OFF;
521         } else if (result != TOS_SUCCESS) {
522                 return LED_OFF;
523         }
524 
525         return state ? LED_FULL : LED_OFF;
526 }
527 
528 /* KBD Illumination */
529 static void toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
530 {
531         u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
532         u32 out[TCI_WORDS];
533         acpi_status status;
534 
535         dev->kbd_illum_supported = 0;
536         dev->kbd_led_registered = false;
537         dev->kbd_event_generated = false;
538 
539         if (!sci_open(dev))
540                 return;
541 
542         status = tci_raw(dev, in, out);
543         sci_close(dev);
544         if (ACPI_FAILURE(status)) {
545                 pr_err("ACPI call to query kbd illumination support failed\n");
546         } else if (out[0] == TOS_SUCCESS) {
547                 /*
548                  * Check for keyboard backlight timeout max value,
549                  * previous kbd backlight implementation set this to
550                  * 0x3c0003, and now the new implementation set this
551                  * to 0x3c001a, use this to distinguish between them.
552                  */
553                 if (out[3] == SCI_KBD_TIME_MAX)
554                         dev->kbd_type = 2;
555                 else
556                         dev->kbd_type = 1;
557                 /* Get the current keyboard backlight mode */
558                 dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
559                 /* Get the current time (1-60 seconds) */
560                 dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
561                 /* Flag as supported */
562                 dev->kbd_illum_supported = 1;
563         }
564 }
565 
566 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
567 {
568         u32 result;
569 
570         if (!sci_open(dev))
571                 return -EIO;
572 
573         result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
574         sci_close(dev);
575         if (result == TOS_FAILURE)
576                 pr_err("ACPI call to set KBD backlight status failed\n");
577         else if (result == TOS_NOT_SUPPORTED)
578                 return -ENODEV;
579 
580         return result == TOS_SUCCESS ? 0 : -EIO;
581 }
582 
583 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
584 {
585         u32 result;
586 
587         if (!sci_open(dev))
588                 return -EIO;
589 
590         result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
591         sci_close(dev);
592         if (result == TOS_FAILURE)
593                 pr_err("ACPI call to get KBD backlight status failed\n");
594         else if (result == TOS_NOT_SUPPORTED)
595                 return -ENODEV;
596 
597         return result == TOS_SUCCESS ? 0 : -EIO;
598 }
599 
600 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
601 {
602         struct toshiba_acpi_dev *dev = container_of(cdev,
603                         struct toshiba_acpi_dev, kbd_led);
604         u32 result;
605         u32 state;
606 
607         /* Check the keyboard backlight state */
608         result = hci_read(dev, HCI_KBD_ILLUMINATION, &state);
609         if (result == TOS_FAILURE) {
610                 pr_err("ACPI call to get the keyboard backlight failed\n");
611                 return LED_OFF;
612         } else if (result != TOS_SUCCESS) {
613                 return LED_OFF;
614         }
615 
616         return state ? LED_FULL : LED_OFF;
617 }
618 
619 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
620                                      enum led_brightness brightness)
621 {
622         struct toshiba_acpi_dev *dev = container_of(cdev,
623                         struct toshiba_acpi_dev, kbd_led);
624         u32 result;
625         u32 state;
626 
627         /* Set the keyboard backlight state */
628         state = brightness ? 1 : 0;
629         result = hci_write(dev, HCI_KBD_ILLUMINATION, state);
630         if (result == TOS_FAILURE)
631                 pr_err("ACPI call to set KBD Illumination mode failed\n");
632 }
633 
634 /* TouchPad support */
635 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
636 {
637         u32 result;
638 
639         if (!sci_open(dev))
640                 return -EIO;
641 
642         result = sci_write(dev, SCI_TOUCHPAD, state);
643         sci_close(dev);
644         if (result == TOS_FAILURE)
645                 pr_err("ACPI call to set the touchpad failed\n");
646         else if (result == TOS_NOT_SUPPORTED)
647                 return -ENODEV;
648 
649         return result == TOS_SUCCESS ? 0 : -EIO;
650 }
651 
652 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
653 {
654         u32 result;
655 
656         if (!sci_open(dev))
657                 return -EIO;
658 
659         result = sci_read(dev, SCI_TOUCHPAD, state);
660         sci_close(dev);
661         if (result == TOS_FAILURE)
662                 pr_err("ACPI call to query the touchpad failed\n");
663         else if (result == TOS_NOT_SUPPORTED)
664                 return -ENODEV;
665 
666         return result == TOS_SUCCESS ? 0 : -EIO;
667 }
668 
669 /* Eco Mode support */
670 static void toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
671 {
672         acpi_status status;
673         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
674         u32 out[TCI_WORDS];
675 
676         dev->eco_supported = 0;
677         dev->eco_led_registered = false;
678 
679         status = tci_raw(dev, in, out);
680         if (ACPI_FAILURE(status)) {
681                 pr_err("ACPI call to get ECO led failed\n");
682         } else if (out[0] == TOS_INPUT_DATA_ERROR) {
683                 /*
684                  * If we receive 0x8300 (Input Data Error), it means that the
685                  * LED device is present, but that we just screwed the input
686                  * parameters.
687                  *
688                  * Let's query the status of the LED to see if we really have a
689                  * success response, indicating the actual presense of the LED,
690                  * bail out otherwise.
691                  */
692                 in[3] = 1;
693                 status = tci_raw(dev, in, out);
694                 if (ACPI_FAILURE(status))
695                         pr_err("ACPI call to get ECO led failed\n");
696                 else if (out[0] == TOS_SUCCESS)
697                         dev->eco_supported = 1;
698         }
699 }
700 
701 static enum led_brightness
702 toshiba_eco_mode_get_status(struct led_classdev *cdev)
703 {
704         struct toshiba_acpi_dev *dev = container_of(cdev,
705                         struct toshiba_acpi_dev, eco_led);
706         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
707         u32 out[TCI_WORDS];
708         acpi_status status;
709 
710         status = tci_raw(dev, in, out);
711         if (ACPI_FAILURE(status)) {
712                 pr_err("ACPI call to get ECO led failed\n");
713                 return LED_OFF;
714         } else if (out[0] != TOS_SUCCESS) {
715                 return LED_OFF;
716         }
717 
718         return out[2] ? LED_FULL : LED_OFF;
719 }
720 
721 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
722                                      enum led_brightness brightness)
723 {
724         struct toshiba_acpi_dev *dev = container_of(cdev,
725                         struct toshiba_acpi_dev, eco_led);
726         u32 in[TCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
727         u32 out[TCI_WORDS];
728         acpi_status status;
729 
730         /* Switch the Eco Mode led on/off */
731         in[2] = (brightness) ? 1 : 0;
732         status = tci_raw(dev, in, out);
733         if (ACPI_FAILURE(status))
734                 pr_err("ACPI call to set ECO led failed\n");
735 }
736 
737 /* Accelerometer support */
738 static void toshiba_accelerometer_available(struct toshiba_acpi_dev *dev)
739 {
740         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
741         u32 out[TCI_WORDS];
742         acpi_status status;
743 
744         dev->accelerometer_supported = 0;
745 
746         /*
747          * Check if the accelerometer call exists,
748          * this call also serves as initialization
749          */
750         status = tci_raw(dev, in, out);
751         if (ACPI_FAILURE(status))
752                 pr_err("ACPI call to query the accelerometer failed\n");
753         else if (out[0] == TOS_SUCCESS)
754                 dev->accelerometer_supported = 1;
755 }
756 
757 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
758                                      u32 *xy, u32 *z)
759 {
760         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
761         u32 out[TCI_WORDS];
762         acpi_status status;
763 
764         /* Check the Accelerometer status */
765         status = tci_raw(dev, in, out);
766         if (ACPI_FAILURE(status)) {
767                 pr_err("ACPI call to query the accelerometer failed\n");
768                 return -EIO;
769         } else if (out[0] == TOS_NOT_SUPPORTED) {
770                 return -ENODEV;
771         } else if (out[0] == TOS_SUCCESS) {
772                 *xy = out[2];
773                 *z = out[4];
774                 return 0;
775         }
776 
777         return -EIO;
778 }
779 
780 /* Sleep (Charge and Music) utilities support */
781 static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
782 {
783         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
784         u32 out[TCI_WORDS];
785         acpi_status status;
786 
787         dev->usb_sleep_charge_supported = 0;
788 
789         if (!sci_open(dev))
790                 return;
791 
792         status = tci_raw(dev, in, out);
793         if (ACPI_FAILURE(status)) {
794                 pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
795                 sci_close(dev);
796                 return;
797         } else if (out[0] == TOS_NOT_SUPPORTED) {
798                 sci_close(dev);
799                 return;
800         } else if (out[0] == TOS_SUCCESS) {
801                 dev->usbsc_mode_base = out[4];
802         }
803 
804         in[5] = SCI_USB_CHARGE_BAT_LVL;
805         status = tci_raw(dev, in, out);
806         sci_close(dev);
807         if (ACPI_FAILURE(status)) {
808                 pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
809         } else if (out[0] == TOS_SUCCESS) {
810                 dev->usbsc_bat_level = out[2];
811                 /* Flag as supported */
812                 dev->usb_sleep_charge_supported = 1;
813         }
814 
815 }
816 
817 static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
818                                         u32 *mode)
819 {
820         u32 result;
821 
822         if (!sci_open(dev))
823                 return -EIO;
824 
825         result = sci_read(dev, SCI_USB_SLEEP_CHARGE, mode);
826         sci_close(dev);
827         if (result == TOS_FAILURE)
828                 pr_err("ACPI call to set USB S&C mode failed\n");
829         else if (result == TOS_NOT_SUPPORTED)
830                 return -ENODEV;
831 
832         return result == TOS_SUCCESS ? 0 : -EIO;
833 }
834 
835 static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
836                                         u32 mode)
837 {
838         u32 result;
839 
840         if (!sci_open(dev))
841                 return -EIO;
842 
843         result = sci_write(dev, SCI_USB_SLEEP_CHARGE, mode);
844         sci_close(dev);
845         if (result == TOS_FAILURE)
846                 pr_err("ACPI call to set USB S&C mode failed\n");
847         else if (result == TOS_NOT_SUPPORTED)
848                 return -ENODEV;
849 
850         return result == TOS_SUCCESS ? 0 : -EIO;
851 }
852 
853 static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
854                                               u32 *mode)
855 {
856         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
857         u32 out[TCI_WORDS];
858         acpi_status status;
859 
860         if (!sci_open(dev))
861                 return -EIO;
862 
863         in[5] = SCI_USB_CHARGE_BAT_LVL;
864         status = tci_raw(dev, in, out);
865         sci_close(dev);
866         if (ACPI_FAILURE(status)) {
867                 pr_err("ACPI call to get USB S&C battery level failed\n");
868         } else if (out[0] == TOS_NOT_SUPPORTED) {
869                 return -ENODEV;
870         } else if (out[0] == TOS_SUCCESS) {
871                 *mode = out[2];
872                 return 0;
873         }
874 
875         return -EIO;
876 }
877 
878 static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
879                                               u32 mode)
880 {
881         u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
882         u32 out[TCI_WORDS];
883         acpi_status status;
884 
885         if (!sci_open(dev))
886                 return -EIO;
887 
888         in[2] = mode;
889         in[5] = SCI_USB_CHARGE_BAT_LVL;
890         status = tci_raw(dev, in, out);
891         sci_close(dev);
892         if (ACPI_FAILURE(status))
893                 pr_err("ACPI call to set USB S&C battery level failed\n");
894         else if (out[0] == TOS_NOT_SUPPORTED)
895                 return -ENODEV;
896 
897         return out[0] == TOS_SUCCESS ? 0 : -EIO;
898 }
899 
900 static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
901                                         u32 *state)
902 {
903         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
904         u32 out[TCI_WORDS];
905         acpi_status status;
906 
907         if (!sci_open(dev))
908                 return -EIO;
909 
910         in[5] = SCI_USB_CHARGE_RAPID_DSP;
911         status = tci_raw(dev, in, out);
912         sci_close(dev);
913         if (ACPI_FAILURE(status)) {
914                 pr_err("ACPI call to get USB Rapid Charge failed\n");
915         } else if (out[0] == TOS_NOT_SUPPORTED) {
916                 return -ENODEV;
917         } else if (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) {
918                 *state = out[2];
919                 return 0;
920         }
921 
922         return -EIO;
923 }
924 
925 static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
926                                         u32 state)
927 {
928         u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
929         u32 out[TCI_WORDS];
930         acpi_status status;
931 
932         if (!sci_open(dev))
933                 return -EIO;
934 
935         in[2] = state;
936         in[5] = SCI_USB_CHARGE_RAPID_DSP;
937         status = tci_raw(dev, in, out);
938         sci_close(dev);
939         if (ACPI_FAILURE(status))
940                 pr_err("ACPI call to set USB Rapid Charge failed\n");
941         else if (out[0] == TOS_NOT_SUPPORTED)
942                 return -ENODEV;
943 
944         return (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) ? 0 : -EIO;
945 }
946 
947 static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
948 {
949         u32 result;
950 
951         if (!sci_open(dev))
952                 return -EIO;
953 
954         result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
955         sci_close(dev);
956         if (result == TOS_FAILURE)
957                 pr_err("ACPI call to get Sleep and Music failed\n");
958         else if (result == TOS_NOT_SUPPORTED)
959                 return -ENODEV;
960 
961         return result == TOS_SUCCESS ? 0 : -EIO;
962 }
963 
964 static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
965 {
966         u32 result;
967 
968         if (!sci_open(dev))
969                 return -EIO;
970 
971         result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
972         sci_close(dev);
973         if (result == TOS_FAILURE)
974                 pr_err("ACPI call to set Sleep and Music failed\n");
975         else if (result == TOS_NOT_SUPPORTED)
976                 return -ENODEV;
977 
978         return result == TOS_SUCCESS ? 0 : -EIO;
979 }
980 
981 /* Keyboard function keys */
982 static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)
983 {
984         u32 result;
985 
986         if (!sci_open(dev))
987                 return -EIO;
988 
989         result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);
990         sci_close(dev);
991         if (result == TOS_FAILURE)
992                 pr_err("ACPI call to get KBD function keys failed\n");
993         else if (result == TOS_NOT_SUPPORTED)
994                 return -ENODEV;
995 
996         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
997 }
998 
999 static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
1000 {
1001         u32 result;
1002 
1003         if (!sci_open(dev))
1004                 return -EIO;
1005 
1006         result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);
1007         sci_close(dev);
1008         if (result == TOS_FAILURE)
1009                 pr_err("ACPI call to set KBD function keys failed\n");
1010         else if (result == TOS_NOT_SUPPORTED)
1011                 return -ENODEV;
1012 
1013         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1014 }
1015 
1016 /* Panel Power ON */
1017 static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)
1018 {
1019         u32 result;
1020 
1021         if (!sci_open(dev))
1022                 return -EIO;
1023 
1024         result = sci_read(dev, SCI_PANEL_POWER_ON, state);
1025         sci_close(dev);
1026         if (result == TOS_FAILURE)
1027                 pr_err("ACPI call to get Panel Power ON failed\n");
1028         else if (result == TOS_NOT_SUPPORTED)
1029                 return -ENODEV;
1030 
1031         return result == TOS_SUCCESS ? 0 : -EIO;
1032 }
1033 
1034 static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
1035 {
1036         u32 result;
1037 
1038         if (!sci_open(dev))
1039                 return -EIO;
1040 
1041         result = sci_write(dev, SCI_PANEL_POWER_ON, state);
1042         sci_close(dev);
1043         if (result == TOS_FAILURE)
1044                 pr_err("ACPI call to set Panel Power ON failed\n");
1045         else if (result == TOS_NOT_SUPPORTED)
1046                 return -ENODEV;
1047 
1048         return result == TOS_SUCCESS ? 0 : -EIO;
1049 }
1050 
1051 /* USB Three */
1052 static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state)
1053 {
1054         u32 result;
1055 
1056         if (!sci_open(dev))
1057                 return -EIO;
1058 
1059         result = sci_read(dev, SCI_USB_THREE, state);
1060         sci_close(dev);
1061         if (result == TOS_FAILURE)
1062                 pr_err("ACPI call to get USB 3 failed\n");
1063         else if (result == TOS_NOT_SUPPORTED)
1064                 return -ENODEV;
1065 
1066         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1067 }
1068 
1069 static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
1070 {
1071         u32 result;
1072 
1073         if (!sci_open(dev))
1074                 return -EIO;
1075 
1076         result = sci_write(dev, SCI_USB_THREE, state);
1077         sci_close(dev);
1078         if (result == TOS_FAILURE)
1079                 pr_err("ACPI call to set USB 3 failed\n");
1080         else if (result == TOS_NOT_SUPPORTED)
1081                 return -ENODEV;
1082 
1083         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1084 }
1085 
1086 /* Hotkey Event type */
1087 static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
1088                                          u32 *type)
1089 {
1090         u32 in[TCI_WORDS] = { HCI_GET, HCI_SYSTEM_INFO, 0x03, 0, 0, 0 };
1091         u32 out[TCI_WORDS];
1092         acpi_status status;
1093 
1094         status = tci_raw(dev, in, out);
1095         if (ACPI_FAILURE(status)) {
1096                 pr_err("ACPI call to get System type failed\n");
1097         } else if (out[0] == TOS_NOT_SUPPORTED) {
1098                 return -ENODEV;
1099         } else if (out[0] == TOS_SUCCESS) {
1100                 *type = out[3];
1101                 return 0;
1102         }
1103 
1104         return -EIO;
1105 }
1106 
1107 /* Wireless status (RFKill, WLAN, BT, WWAN) */
1108 static int toshiba_wireless_status(struct toshiba_acpi_dev *dev)
1109 {
1110         u32 in[TCI_WORDS] = { HCI_GET, HCI_WIRELESS, 0, 0, 0, 0 };
1111         u32 out[TCI_WORDS];
1112         acpi_status status;
1113 
1114         in[3] = HCI_WIRELESS_STATUS;
1115         status = tci_raw(dev, in, out);
1116 
1117         if (ACPI_FAILURE(status)) {
1118                 pr_err("ACPI call to get Wireless status failed\n");
1119                 return -EIO;
1120         }
1121 
1122         if (out[0] == TOS_NOT_SUPPORTED)
1123                 return -ENODEV;
1124 
1125         if (out[0] != TOS_SUCCESS)
1126                 return -EIO;
1127 
1128         dev->killswitch = !!(out[2] & HCI_WIRELESS_STATUS);
1129 
1130         return 0;
1131 }
1132 
1133 /* WWAN */
1134 static void toshiba_wwan_available(struct toshiba_acpi_dev *dev)
1135 {
1136         u32 in[TCI_WORDS] = { HCI_GET, HCI_WIRELESS, 0, 0, 0, 0 };
1137         u32 out[TCI_WORDS];
1138         acpi_status status;
1139 
1140         dev->wwan_supported = 0;
1141 
1142         /*
1143          * WWAN support can be queried by setting the in[3] value to
1144          * HCI_WIRELESS_WWAN (0x03).
1145          *
1146          * If supported, out[0] contains TOS_SUCCESS and out[2] contains
1147          * HCI_WIRELESS_WWAN_STATUS (0x2000).
1148          *
1149          * If not supported, out[0] contains TOS_INPUT_DATA_ERROR (0x8300)
1150          * or TOS_NOT_SUPPORTED (0x8000).
1151          */
1152         in[3] = HCI_WIRELESS_WWAN;
1153         status = tci_raw(dev, in, out);
1154 
1155         if (ACPI_FAILURE(status)) {
1156                 pr_err("ACPI call to get WWAN status failed\n");
1157                 return;
1158         }
1159 
1160         if (out[0] != TOS_SUCCESS)
1161                 return;
1162 
1163         dev->wwan_supported = (out[2] == HCI_WIRELESS_WWAN_STATUS);
1164 }
1165 
1166 static int toshiba_wwan_set(struct toshiba_acpi_dev *dev, u32 state)
1167 {
1168         u32 in[TCI_WORDS] = { HCI_SET, HCI_WIRELESS, state, 0, 0, 0 };
1169         u32 out[TCI_WORDS];
1170         acpi_status status;
1171 
1172         in[3] = HCI_WIRELESS_WWAN_STATUS;
1173         status = tci_raw(dev, in, out);
1174 
1175         if (ACPI_FAILURE(status)) {
1176                 pr_err("ACPI call to set WWAN status failed\n");
1177                 return -EIO;
1178         }
1179 
1180         if (out[0] == TOS_NOT_SUPPORTED)
1181                 return -ENODEV;
1182 
1183         if (out[0] != TOS_SUCCESS)
1184                 return -EIO;
1185 
1186         /*
1187          * Some devices only need to call HCI_WIRELESS_WWAN_STATUS to
1188          * (de)activate the device, but some others need the
1189          * HCI_WIRELESS_WWAN_POWER call as well.
1190          */
1191         in[3] = HCI_WIRELESS_WWAN_POWER;
1192         status = tci_raw(dev, in, out);
1193 
1194         if (ACPI_FAILURE(status)) {
1195                 pr_err("ACPI call to set WWAN power failed\n");
1196                 return -EIO;
1197         }
1198 
1199         if (out[0] == TOS_NOT_SUPPORTED)
1200                 return -ENODEV;
1201 
1202         return out[0] == TOS_SUCCESS ? 0 : -EIO;
1203 }
1204 
1205 /* Cooling Method */
1206 static void toshiba_cooling_method_available(struct toshiba_acpi_dev *dev)
1207 {
1208         u32 in[TCI_WORDS] = { HCI_GET, HCI_COOLING_METHOD, 0, 0, 0, 0 };
1209         u32 out[TCI_WORDS];
1210         acpi_status status;
1211 
1212         dev->cooling_method_supported = 0;
1213         dev->max_cooling_method = 0;
1214 
1215         status = tci_raw(dev, in, out);
1216         if (ACPI_FAILURE(status))
1217                 pr_err("ACPI call to get Cooling Method failed\n");
1218 
1219         if (out[0] != TOS_SUCCESS && out[0] != TOS_SUCCESS2)
1220                 return;
1221 
1222         dev->cooling_method_supported = 1;
1223         dev->max_cooling_method = out[3];
1224 }
1225 
1226 static int toshiba_cooling_method_get(struct toshiba_acpi_dev *dev, u32 *state)
1227 {
1228         u32 result = hci_read(dev, HCI_COOLING_METHOD, state);
1229 
1230         if (result == TOS_FAILURE)
1231                 pr_err("ACPI call to get Cooling Method failed\n");
1232 
1233         if (result == TOS_NOT_SUPPORTED)
1234                 return -ENODEV;
1235 
1236         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1237 }
1238 
1239 static int toshiba_cooling_method_set(struct toshiba_acpi_dev *dev, u32 state)
1240 {
1241         u32 result = hci_write(dev, HCI_COOLING_METHOD, state);
1242 
1243         if (result == TOS_FAILURE)
1244                 pr_err("ACPI call to get Cooling Method failed\n");
1245 
1246         if (result == TOS_NOT_SUPPORTED)
1247                 return -ENODEV;
1248 
1249         return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
1250 }
1251 
1252 /* Transflective Backlight */
1253 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 *status)
1254 {
1255         u32 result = hci_read(dev, HCI_TR_BACKLIGHT, status);
1256 
1257         if (result == TOS_FAILURE)
1258                 pr_err("ACPI call to get Transflective Backlight failed\n");
1259         else if (result == TOS_NOT_SUPPORTED)
1260                 return -ENODEV;
1261 
1262         return result == TOS_SUCCESS ? 0 : -EIO;
1263 }
1264 
1265 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 status)
1266 {
1267         u32 result = hci_write(dev, HCI_TR_BACKLIGHT, !status);
1268 
1269         if (result == TOS_FAILURE)
1270                 pr_err("ACPI call to set Transflective Backlight failed\n");
1271         else if (result == TOS_NOT_SUPPORTED)
1272                 return -ENODEV;
1273 
1274         return result == TOS_SUCCESS ? 0 : -EIO;
1275 }
1276 
1277 static struct proc_dir_entry *toshiba_proc_dir;
1278 
1279 /* LCD Brightness */
1280 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
1281 {
1282         u32 result;
1283         u32 value;
1284         int brightness = 0;
1285 
1286         if (dev->tr_backlight_supported) {
1287                 int ret = get_tr_backlight_status(dev, &value);
1288 
1289                 if (ret)
1290                         return ret;
1291                 if (value)
1292                         return 0;
1293                 brightness++;
1294         }
1295 
1296         result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);
1297         if (result == TOS_FAILURE)
1298                 pr_err("ACPI call to get LCD Brightness failed\n");
1299         else if (result == TOS_NOT_SUPPORTED)
1300                 return -ENODEV;
1301         if (result == TOS_SUCCESS)
1302                 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
1303 
1304         return -EIO;
1305 }
1306 
1307 static int get_lcd_brightness(struct backlight_device *bd)
1308 {
1309         struct toshiba_acpi_dev *dev = bl_get_data(bd);
1310 
1311         return __get_lcd_brightness(dev);
1312 }
1313 
1314 static int lcd_proc_show(struct seq_file *m, void *v)
1315 {
1316         struct toshiba_acpi_dev *dev = m->private;
1317         int levels;
1318         int value;
1319 
1320         if (!dev->backlight_dev)
1321                 return -ENODEV;
1322 
1323         levels = dev->backlight_dev->props.max_brightness + 1;
1324         value = get_lcd_brightness(dev->backlight_dev);
1325         if (value >= 0) {
1326                 seq_printf(m, "brightness:              %d\n", value);
1327                 seq_printf(m, "brightness_levels:       %d\n", levels);
1328                 return 0;
1329         }
1330 
1331         pr_err("Error reading LCD brightness\n");
1332 
1333         return -EIO;
1334 }
1335 
1336 static int lcd_proc_open(struct inode *inode, struct file *file)
1337 {
1338         return single_open(file, lcd_proc_show, PDE_DATA(inode));
1339 }
1340 
1341 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
1342 {
1343         u32 result;
1344 
1345         if (dev->tr_backlight_supported) {
1346                 int ret = set_tr_backlight_status(dev, !value);
1347 
1348                 if (ret)
1349                         return ret;
1350                 if (value)
1351                         value--;
1352         }
1353 
1354         value = value << HCI_LCD_BRIGHTNESS_SHIFT;
1355         result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);
1356         if (result == TOS_FAILURE)
1357                 pr_err("ACPI call to set LCD Brightness failed\n");
1358         else if (result == TOS_NOT_SUPPORTED)
1359                 return -ENODEV;
1360 
1361         return result == TOS_SUCCESS ? 0 : -EIO;
1362 }
1363 
1364 static int set_lcd_status(struct backlight_device *bd)
1365 {
1366         struct toshiba_acpi_dev *dev = bl_get_data(bd);
1367 
1368         return set_lcd_brightness(dev, bd->props.brightness);
1369 }
1370 
1371 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
1372                               size_t count, loff_t *pos)
1373 {
1374         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1375         char cmd[42];
1376         size_t len;
1377         int levels = dev->backlight_dev->props.max_brightness + 1;
1378         int value;
1379 
1380         len = min(count, sizeof(cmd) - 1);
1381         if (copy_from_user(cmd, buf, len))
1382                 return -EFAULT;
1383         cmd[len] = '\0';
1384 
1385         if (sscanf(cmd, " brightness : %i", &value) != 1 &&
1386             value < 0 && value > levels)
1387                 return -EINVAL;
1388 
1389         if (set_lcd_brightness(dev, value))
1390                 return -EIO;
1391 
1392         return count;
1393 }
1394 
1395 static const struct file_operations lcd_proc_fops = {
1396         .owner          = THIS_MODULE,
1397         .open           = lcd_proc_open,
1398         .read           = seq_read,
1399         .llseek         = seq_lseek,
1400         .release        = single_release,
1401         .write          = lcd_proc_write,
1402 };
1403 
1404 /* Video-Out */
1405 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
1406 {
1407         u32 result = hci_read(dev, HCI_VIDEO_OUT, status);
1408 
1409         if (result == TOS_FAILURE)
1410                 pr_err("ACPI call to get Video-Out failed\n");
1411         else if (result == TOS_NOT_SUPPORTED)
1412                 return -ENODEV;
1413 
1414         return result == TOS_SUCCESS ? 0 : -EIO;
1415 }
1416 
1417 static int video_proc_show(struct seq_file *m, void *v)
1418 {
1419         struct toshiba_acpi_dev *dev = m->private;
1420         u32 value;
1421 
1422         if (!get_video_status(dev, &value)) {
1423                 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
1424                 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
1425                 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
1426 
1427                 seq_printf(m, "lcd_out:                 %d\n", is_lcd);
1428                 seq_printf(m, "crt_out:                 %d\n", is_crt);
1429                 seq_printf(m, "tv_out:                  %d\n", is_tv);
1430                 return 0;
1431         }
1432 
1433         return -EIO;
1434 }
1435 
1436 static int video_proc_open(struct inode *inode, struct file *file)
1437 {
1438         return single_open(file, video_proc_show, PDE_DATA(inode));
1439 }
1440 
1441 static ssize_t video_proc_write(struct file *file, const char __user *buf,
1442                                 size_t count, loff_t *pos)
1443 {
1444         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1445         char *buffer;
1446         char *cmd;
1447         int remain = count;
1448         int lcd_out = -1;
1449         int crt_out = -1;
1450         int tv_out = -1;
1451         int value;
1452         int ret;
1453         u32 video_out;
1454 
1455         cmd = kmalloc(count + 1, GFP_KERNEL);
1456         if (!cmd)
1457                 return -ENOMEM;
1458         if (copy_from_user(cmd, buf, count)) {
1459                 kfree(cmd);
1460                 return -EFAULT;
1461         }
1462         cmd[count] = '\0';
1463 
1464         buffer = cmd;
1465 
1466         /*
1467          * Scan expression.  Multiple expressions may be delimited with ;
1468          * NOTE: To keep scanning simple, invalid fields are ignored.
1469          */
1470         while (remain) {
1471                 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
1472                         lcd_out = value & 1;
1473                 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
1474                         crt_out = value & 1;
1475                 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
1476                         tv_out = value & 1;
1477                 /* Advance to one character past the next ; */
1478                 do {
1479                         ++buffer;
1480                         --remain;
1481                 } while (remain && *(buffer - 1) != ';');
1482         }
1483 
1484         kfree(cmd);
1485 
1486         ret = get_video_status(dev, &video_out);
1487         if (!ret) {
1488                 unsigned int new_video_out = video_out;
1489 
1490                 if (lcd_out != -1)
1491                         _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
1492                 if (crt_out != -1)
1493                         _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
1494                 if (tv_out != -1)
1495                         _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
1496                 /*
1497                  * To avoid unnecessary video disruption, only write the new
1498                  * video setting if something changed.
1499                  */
1500                 if (new_video_out != video_out)
1501                         ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
1502         }
1503 
1504         return ret ? -EIO : count;
1505 }
1506 
1507 static const struct file_operations video_proc_fops = {
1508         .owner          = THIS_MODULE,
1509         .open           = video_proc_open,
1510         .read           = seq_read,
1511         .llseek         = seq_lseek,
1512         .release        = single_release,
1513         .write          = video_proc_write,
1514 };
1515 
1516 /* Fan status */
1517 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1518 {
1519         u32 result = hci_read(dev, HCI_FAN, status);
1520 
1521         if (result == TOS_FAILURE)
1522                 pr_err("ACPI call to get Fan status failed\n");
1523         else if (result == TOS_NOT_SUPPORTED)
1524                 return -ENODEV;
1525 
1526         return result == TOS_SUCCESS ? 0 : -EIO;
1527 }
1528 
1529 static int set_fan_status(struct toshiba_acpi_dev *dev, u32 status)
1530 {
1531         u32 result = hci_write(dev, HCI_FAN, status);
1532 
1533         if (result == TOS_FAILURE)
1534                 pr_err("ACPI call to set Fan status failed\n");
1535         else if (result == TOS_NOT_SUPPORTED)
1536                 return -ENODEV;
1537 
1538         return result == TOS_SUCCESS ? 0 : -EIO;
1539 }
1540 
1541 static int fan_proc_show(struct seq_file *m, void *v)
1542 {
1543         struct toshiba_acpi_dev *dev = m->private;
1544         u32 value;
1545 
1546         if (get_fan_status(dev, &value))
1547                 return -EIO;
1548 
1549         seq_printf(m, "running:                 %d\n", (value > 0));
1550         seq_printf(m, "force_on:                %d\n", dev->force_fan);
1551 
1552         return 0;
1553 }
1554 
1555 static int fan_proc_open(struct inode *inode, struct file *file)
1556 {
1557         return single_open(file, fan_proc_show, PDE_DATA(inode));
1558 }
1559 
1560 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1561                               size_t count, loff_t *pos)
1562 {
1563         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1564         char cmd[42];
1565         size_t len;
1566         int value;
1567 
1568         len = min(count, sizeof(cmd) - 1);
1569         if (copy_from_user(cmd, buf, len))
1570                 return -EFAULT;
1571         cmd[len] = '\0';
1572 
1573         if (sscanf(cmd, " force_on : %i", &value) != 1 &&
1574             value != 0 && value != 1)
1575                 return -EINVAL;
1576 
1577         if (set_fan_status(dev, value))
1578                 return -EIO;
1579 
1580         dev->force_fan = value;
1581 
1582         return count;
1583 }
1584 
1585 static const struct file_operations fan_proc_fops = {
1586         .owner          = THIS_MODULE,
1587         .open           = fan_proc_open,
1588         .read           = seq_read,
1589         .llseek         = seq_lseek,
1590         .release        = single_release,
1591         .write          = fan_proc_write,
1592 };
1593 
1594 static int keys_proc_show(struct seq_file *m, void *v)
1595 {
1596         struct toshiba_acpi_dev *dev = m->private;
1597 
1598         seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
1599         seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
1600 
1601         return 0;
1602 }
1603 
1604 static int keys_proc_open(struct inode *inode, struct file *file)
1605 {
1606         return single_open(file, keys_proc_show, PDE_DATA(inode));
1607 }
1608 
1609 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1610                                size_t count, loff_t *pos)
1611 {
1612         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1613         char cmd[42];
1614         size_t len;
1615         int value;
1616 
1617         len = min(count, sizeof(cmd) - 1);
1618         if (copy_from_user(cmd, buf, len))
1619                 return -EFAULT;
1620         cmd[len] = '\0';
1621 
1622         if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0)
1623                 dev->key_event_valid = 0;
1624         else
1625                 return -EINVAL;
1626 
1627         return count;
1628 }
1629 
1630 static const struct file_operations keys_proc_fops = {
1631         .owner          = THIS_MODULE,
1632         .open           = keys_proc_open,
1633         .read           = seq_read,
1634         .llseek         = seq_lseek,
1635         .release        = single_release,
1636         .write          = keys_proc_write,
1637 };
1638 
1639 static int version_proc_show(struct seq_file *m, void *v)
1640 {
1641         seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
1642         seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);
1643         return 0;
1644 }
1645 
1646 static int version_proc_open(struct inode *inode, struct file *file)
1647 {
1648         return single_open(file, version_proc_show, PDE_DATA(inode));
1649 }
1650 
1651 static const struct file_operations version_proc_fops = {
1652         .owner          = THIS_MODULE,
1653         .open           = version_proc_open,
1654         .read           = seq_read,
1655         .llseek         = seq_lseek,
1656         .release        = single_release,
1657 };
1658 
1659 /*
1660  * Proc and module init
1661  */
1662 
1663 #define PROC_TOSHIBA            "toshiba"
1664 
1665 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1666 {
1667         if (dev->backlight_dev)
1668                 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1669                                  &lcd_proc_fops, dev);
1670         if (dev->video_supported)
1671                 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1672                                  &video_proc_fops, dev);
1673         if (dev->fan_supported)
1674                 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1675                                  &fan_proc_fops, dev);
1676         if (dev->hotkey_dev)
1677                 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1678                                  &keys_proc_fops, dev);
1679         proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1680                          &version_proc_fops, dev);
1681 }
1682 
1683 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1684 {
1685         if (dev->backlight_dev)
1686                 remove_proc_entry("lcd", toshiba_proc_dir);
1687         if (dev->video_supported)
1688                 remove_proc_entry("video", toshiba_proc_dir);
1689         if (dev->fan_supported)
1690                 remove_proc_entry("fan", toshiba_proc_dir);
1691         if (dev->hotkey_dev)
1692                 remove_proc_entry("keys", toshiba_proc_dir);
1693         remove_proc_entry("version", toshiba_proc_dir);
1694 }
1695 
1696 static const struct backlight_ops toshiba_backlight_data = {
1697         .options = BL_CORE_SUSPENDRESUME,
1698         .get_brightness = get_lcd_brightness,
1699         .update_status  = set_lcd_status,
1700 };
1701 
1702 /* Keyboard backlight work */
1703 static void toshiba_acpi_kbd_bl_work(struct work_struct *work);
1704 
1705 static DECLARE_WORK(kbd_bl_work, toshiba_acpi_kbd_bl_work);
1706 
1707 /*
1708  * Sysfs files
1709  */
1710 static ssize_t version_show(struct device *dev,
1711                             struct device_attribute *attr, char *buf)
1712 {
1713         return sprintf(buf, "%s\n", TOSHIBA_ACPI_VERSION);
1714 }
1715 static DEVICE_ATTR_RO(version);
1716 
1717 static ssize_t fan_store(struct device *dev,
1718                          struct device_attribute *attr,
1719                          const char *buf, size_t count)
1720 {
1721         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1722         int state;
1723         int ret;
1724 
1725         ret = kstrtoint(buf, 0, &state);
1726         if (ret)
1727                 return ret;
1728 
1729         if (state != 0 && state != 1)
1730                 return -EINVAL;
1731 
1732         ret = set_fan_status(toshiba, state);
1733         if (ret)
1734                 return ret;
1735 
1736         return count;
1737 }
1738 
1739 static ssize_t fan_show(struct device *dev,
1740                         struct device_attribute *attr, char *buf)
1741 {
1742         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1743         u32 value;
1744         int ret;
1745 
1746         ret = get_fan_status(toshiba, &value);
1747         if (ret)
1748                 return ret;
1749 
1750         return sprintf(buf, "%d\n", value);
1751 }
1752 static DEVICE_ATTR_RW(fan);
1753 
1754 static ssize_t kbd_backlight_mode_store(struct device *dev,
1755                                         struct device_attribute *attr,
1756                                         const char *buf, size_t count)
1757 {
1758         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1759         int mode;
1760         int ret;
1761 
1762 
1763         ret = kstrtoint(buf, 0, &mode);
1764         if (ret)
1765                 return ret;
1766 
1767         /* Check for supported modes depending on keyboard backlight type */
1768         if (toshiba->kbd_type == 1) {
1769                 /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */
1770                 if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO)
1771                         return -EINVAL;
1772         } else if (toshiba->kbd_type == 2) {
1773                 /* Type 2 doesn't support SCI_KBD_MODE_FNZ */
1774                 if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON &&
1775                     mode != SCI_KBD_MODE_OFF)
1776                         return -EINVAL;
1777         }
1778 
1779         /*
1780          * Set the Keyboard Backlight Mode where:
1781          *      Auto - KBD backlight turns off automatically in given time
1782          *      FN-Z - KBD backlight "toggles" when hotkey pressed
1783          *      ON   - KBD backlight is always on
1784          *      OFF  - KBD backlight is always off
1785          */
1786 
1787         /* Only make a change if the actual mode has changed */
1788         if (toshiba->kbd_mode != mode) {
1789                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1790                 int time = toshiba->kbd_time << HCI_MISC_SHIFT;
1791 
1792                 /* OR the "base time" to the actual method format */
1793                 if (toshiba->kbd_type == 1) {
1794                         /* Type 1 requires the current mode */
1795                         time |= toshiba->kbd_mode;
1796                 } else if (toshiba->kbd_type == 2) {
1797                         /* Type 2 requires the desired mode */
1798                         time |= mode;
1799                 }
1800 
1801                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1802                 if (ret)
1803                         return ret;
1804 
1805                 toshiba->kbd_mode = mode;
1806 
1807                 /*
1808                  * Some laptop models with the second generation backlit
1809                  * keyboard (type 2) do not generate the keyboard backlight
1810                  * changed event (0x92), and thus, the driver will never update
1811                  * the sysfs entries.
1812                  *
1813                  * The event is generated right when changing the keyboard
1814                  * backlight mode and the *notify function will set the
1815                  * kbd_event_generated to true.
1816                  *
1817                  * In case the event is not generated, schedule the keyboard
1818                  * backlight work to update the sysfs entries and emulate the
1819                  * event via genetlink.
1820                  */
1821                 if (toshiba->kbd_type == 2 &&
1822                     !toshiba_acpi->kbd_event_generated)
1823                         schedule_work(&kbd_bl_work);
1824         }
1825 
1826         return count;
1827 }
1828 
1829 static ssize_t kbd_backlight_mode_show(struct device *dev,
1830                                        struct device_attribute *attr,
1831                                        char *buf)
1832 {
1833         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1834         u32 time;
1835 
1836         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1837                 return -EIO;
1838 
1839         return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK);
1840 }
1841 static DEVICE_ATTR_RW(kbd_backlight_mode);
1842 
1843 static ssize_t kbd_type_show(struct device *dev,
1844                              struct device_attribute *attr, char *buf)
1845 {
1846         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1847 
1848         return sprintf(buf, "%d\n", toshiba->kbd_type);
1849 }
1850 static DEVICE_ATTR_RO(kbd_type);
1851 
1852 static ssize_t available_kbd_modes_show(struct device *dev,
1853                                         struct device_attribute *attr,
1854                                         char *buf)
1855 {
1856         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1857 
1858         if (toshiba->kbd_type == 1)
1859                 return sprintf(buf, "0x%x 0x%x\n",
1860                                SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
1861 
1862         return sprintf(buf, "0x%x 0x%x 0x%x\n",
1863                        SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF);
1864 }
1865 static DEVICE_ATTR_RO(available_kbd_modes);
1866 
1867 static ssize_t kbd_backlight_timeout_store(struct device *dev,
1868                                            struct device_attribute *attr,
1869                                            const char *buf, size_t count)
1870 {
1871         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1872         int time;
1873         int ret;
1874 
1875         ret = kstrtoint(buf, 0, &time);
1876         if (ret)
1877                 return ret;
1878 
1879         /* Check for supported values depending on kbd_type */
1880         if (toshiba->kbd_type == 1) {
1881                 if (time < 0 || time > 60)
1882                         return -EINVAL;
1883         } else if (toshiba->kbd_type == 2) {
1884                 if (time < 1 || time > 60)
1885                         return -EINVAL;
1886         }
1887 
1888         /* Set the Keyboard Backlight Timeout */
1889 
1890         /* Only make a change if the actual timeout has changed */
1891         if (toshiba->kbd_time != time) {
1892                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1893                 time = time << HCI_MISC_SHIFT;
1894                 /* OR the "base time" to the actual method format */
1895                 if (toshiba->kbd_type == 1)
1896                         time |= SCI_KBD_MODE_FNZ;
1897                 else if (toshiba->kbd_type == 2)
1898                         time |= SCI_KBD_MODE_AUTO;
1899 
1900                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1901                 if (ret)
1902                         return ret;
1903 
1904                 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1905         }
1906 
1907         return count;
1908 }
1909 
1910 static ssize_t kbd_backlight_timeout_show(struct device *dev,
1911                                           struct device_attribute *attr,
1912                                           char *buf)
1913 {
1914         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1915         u32 time;
1916 
1917         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1918                 return -EIO;
1919 
1920         return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1921 }
1922 static DEVICE_ATTR_RW(kbd_backlight_timeout);
1923 
1924 static ssize_t touchpad_store(struct device *dev,
1925                               struct device_attribute *attr,
1926                               const char *buf, size_t count)
1927 {
1928         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1929         int state;
1930         int ret;
1931 
1932         /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1933         ret = kstrtoint(buf, 0, &state);
1934         if (ret)
1935                 return ret;
1936         if (state != 0 && state != 1)
1937                 return -EINVAL;
1938 
1939         ret = toshiba_touchpad_set(toshiba, state);
1940         if (ret)
1941                 return ret;
1942 
1943         return count;
1944 }
1945 
1946 static ssize_t touchpad_show(struct device *dev,
1947                              struct device_attribute *attr, char *buf)
1948 {
1949         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1950         u32 state;
1951         int ret;
1952 
1953         ret = toshiba_touchpad_get(toshiba, &state);
1954         if (ret < 0)
1955                 return ret;
1956 
1957         return sprintf(buf, "%i\n", state);
1958 }
1959 static DEVICE_ATTR_RW(touchpad);
1960 
1961 static ssize_t position_show(struct device *dev,
1962                              struct device_attribute *attr, char *buf)
1963 {
1964         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1965         u32 xyval, zval, tmp;
1966         u16 x, y, z;
1967         int ret;
1968 
1969         xyval = zval = 0;
1970         ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
1971         if (ret < 0)
1972                 return ret;
1973 
1974         x = xyval & HCI_ACCEL_MASK;
1975         tmp = xyval >> HCI_MISC_SHIFT;
1976         y = tmp & HCI_ACCEL_MASK;
1977         z = zval & HCI_ACCEL_MASK;
1978 
1979         return sprintf(buf, "%d %d %d\n", x, y, z);
1980 }
1981 static DEVICE_ATTR_RO(position);
1982 
1983 static ssize_t usb_sleep_charge_show(struct device *dev,
1984                                      struct device_attribute *attr, char *buf)
1985 {
1986         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1987         u32 mode;
1988         int ret;
1989 
1990         ret = toshiba_usb_sleep_charge_get(toshiba, &mode);
1991         if (ret < 0)
1992                 return ret;
1993 
1994         return sprintf(buf, "%x\n", mode & SCI_USB_CHARGE_MODE_MASK);
1995 }
1996 
1997 static ssize_t usb_sleep_charge_store(struct device *dev,
1998                                       struct device_attribute *attr,
1999                                       const char *buf, size_t count)
2000 {
2001         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2002         u32 mode;
2003         int state;
2004         int ret;
2005 
2006         ret = kstrtoint(buf, 0, &state);
2007         if (ret)
2008                 return ret;
2009         /*
2010          * Check for supported values, where:
2011          * 0 - Disabled
2012          * 1 - Alternate (Non USB conformant devices that require more power)
2013          * 2 - Auto (USB conformant devices)
2014          * 3 - Typical
2015          */
2016         if (state != 0 && state != 1 && state != 2 && state != 3)
2017                 return -EINVAL;
2018 
2019         /* Set the USB charging mode to internal value */
2020         mode = toshiba->usbsc_mode_base;
2021         if (state == 0)
2022                 mode |= SCI_USB_CHARGE_DISABLED;
2023         else if (state == 1)
2024                 mode |= SCI_USB_CHARGE_ALTERNATE;
2025         else if (state == 2)
2026                 mode |= SCI_USB_CHARGE_AUTO;
2027         else if (state == 3)
2028                 mode |= SCI_USB_CHARGE_TYPICAL;
2029 
2030         ret = toshiba_usb_sleep_charge_set(toshiba, mode);
2031         if (ret)
2032                 return ret;
2033 
2034         return count;
2035 }
2036 static DEVICE_ATTR_RW(usb_sleep_charge);
2037 
2038 static ssize_t sleep_functions_on_battery_show(struct device *dev,
2039                                                struct device_attribute *attr,
2040                                                char *buf)
2041 {
2042         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2043         u32 state;
2044         int bat_lvl;
2045         int status;
2046         int ret;
2047         int tmp;
2048 
2049         ret = toshiba_sleep_functions_status_get(toshiba, &state);
2050         if (ret < 0)
2051                 return ret;
2052 
2053         /* Determine the status: 0x4 - Enabled | 0x1 - Disabled */
2054         tmp = state & SCI_USB_CHARGE_BAT_MASK;
2055         status = (tmp == 0x4) ? 1 : 0;
2056         /* Determine the battery level set */
2057         bat_lvl = state >> HCI_MISC_SHIFT;
2058 
2059         return sprintf(buf, "%d %d\n", status, bat_lvl);
2060 }
2061 
2062 static ssize_t sleep_functions_on_battery_store(struct device *dev,
2063                                                 struct device_attribute *attr,
2064                                                 const char *buf, size_t count)
2065 {
2066         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2067         u32 status;
2068         int value;
2069         int ret;
2070         int tmp;
2071 
2072         ret = kstrtoint(buf, 0, &value);
2073         if (ret)
2074                 return ret;
2075 
2076         /*
2077          * Set the status of the function:
2078          * 0 - Disabled
2079          * 1-100 - Enabled
2080          */
2081         if (value < 0 || value > 100)
2082                 return -EINVAL;
2083 
2084         if (value == 0) {
2085                 tmp = toshiba->usbsc_bat_level << HCI_MISC_SHIFT;
2086                 status = tmp | SCI_USB_CHARGE_BAT_LVL_OFF;
2087         } else {
2088                 tmp = value << HCI_MISC_SHIFT;
2089                 status = tmp | SCI_USB_CHARGE_BAT_LVL_ON;
2090         }
2091         ret = toshiba_sleep_functions_status_set(toshiba, status);
2092         if (ret < 0)
2093                 return ret;
2094 
2095         toshiba->usbsc_bat_level = status >> HCI_MISC_SHIFT;
2096 
2097         return count;
2098 }
2099 static DEVICE_ATTR_RW(sleep_functions_on_battery);
2100 
2101 static ssize_t usb_rapid_charge_show(struct device *dev,
2102                                      struct device_attribute *attr, char *buf)
2103 {
2104         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2105         u32 state;
2106         int ret;
2107 
2108         ret = toshiba_usb_rapid_charge_get(toshiba, &state);
2109         if (ret < 0)
2110                 return ret;
2111 
2112         return sprintf(buf, "%d\n", state);
2113 }
2114 
2115 static ssize_t usb_rapid_charge_store(struct device *dev,
2116                                       struct device_attribute *attr,
2117                                       const char *buf, size_t count)
2118 {
2119         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2120         int state;
2121         int ret;
2122 
2123         ret = kstrtoint(buf, 0, &state);
2124         if (ret)
2125                 return ret;
2126         if (state != 0 && state != 1)
2127                 return -EINVAL;
2128 
2129         ret = toshiba_usb_rapid_charge_set(toshiba, state);
2130         if (ret)
2131                 return ret;
2132 
2133         return count;
2134 }
2135 static DEVICE_ATTR_RW(usb_rapid_charge);
2136 
2137 static ssize_t usb_sleep_music_show(struct device *dev,
2138                                     struct device_attribute *attr, char *buf)
2139 {
2140         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2141         u32 state;
2142         int ret;
2143 
2144         ret = toshiba_usb_sleep_music_get(toshiba, &state);
2145         if (ret < 0)
2146                 return ret;
2147 
2148         return sprintf(buf, "%d\n", state);
2149 }
2150 
2151 static ssize_t usb_sleep_music_store(struct device *dev,
2152                                      struct device_attribute *attr,
2153                                      const char *buf, size_t count)
2154 {
2155         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2156         int state;
2157         int ret;
2158 
2159         ret = kstrtoint(buf, 0, &state);
2160         if (ret)
2161                 return ret;
2162         if (state != 0 && state != 1)
2163                 return -EINVAL;
2164 
2165         ret = toshiba_usb_sleep_music_set(toshiba, state);
2166         if (ret)
2167                 return ret;
2168 
2169         return count;
2170 }
2171 static DEVICE_ATTR_RW(usb_sleep_music);
2172 
2173 static ssize_t kbd_function_keys_show(struct device *dev,
2174                                       struct device_attribute *attr, char *buf)
2175 {
2176         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2177         int mode;
2178         int ret;
2179 
2180         ret = toshiba_function_keys_get(toshiba, &mode);
2181         if (ret < 0)
2182                 return ret;
2183 
2184         return sprintf(buf, "%d\n", mode);
2185 }
2186 
2187 static ssize_t kbd_function_keys_store(struct device *dev,
2188                                        struct device_attribute *attr,
2189                                        const char *buf, size_t count)
2190 {
2191         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2192         int mode;
2193         int ret;
2194 
2195         ret = kstrtoint(buf, 0, &mode);
2196         if (ret)
2197                 return ret;
2198         /*
2199          * Check for the function keys mode where:
2200          * 0 - Normal operation (F{1-12} as usual and hotkeys via FN-F{1-12})
2201          * 1 - Special functions (Opposite of the above setting)
2202          */
2203         if (mode != 0 && mode != 1)
2204                 return -EINVAL;
2205 
2206         ret = toshiba_function_keys_set(toshiba, mode);
2207         if (ret)
2208                 return ret;
2209 
2210         pr_info("Reboot for changes to KBD Function Keys to take effect");
2211 
2212         return count;
2213 }
2214 static DEVICE_ATTR_RW(kbd_function_keys);
2215 
2216 static ssize_t panel_power_on_show(struct device *dev,
2217                                    struct device_attribute *attr, char *buf)
2218 {
2219         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2220         u32 state;
2221         int ret;
2222 
2223         ret = toshiba_panel_power_on_get(toshiba, &state);
2224         if (ret < 0)
2225                 return ret;
2226 
2227         return sprintf(buf, "%d\n", state);
2228 }
2229 
2230 static ssize_t panel_power_on_store(struct device *dev,
2231                                     struct device_attribute *attr,
2232                                     const char *buf, size_t count)
2233 {
2234         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2235         int state;
2236         int ret;
2237 
2238         ret = kstrtoint(buf, 0, &state);
2239         if (ret)
2240                 return ret;
2241         if (state != 0 && state != 1)
2242                 return -EINVAL;
2243 
2244         ret = toshiba_panel_power_on_set(toshiba, state);
2245         if (ret)
2246                 return ret;
2247 
2248         pr_info("Reboot for changes to Panel Power ON to take effect");
2249 
2250         return count;
2251 }
2252 static DEVICE_ATTR_RW(panel_power_on);
2253 
2254 static ssize_t usb_three_show(struct device *dev,
2255                               struct device_attribute *attr, char *buf)
2256 {
2257         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2258         u32 state;
2259         int ret;
2260 
2261         ret = toshiba_usb_three_get(toshiba, &state);
2262         if (ret < 0)
2263                 return ret;
2264 
2265         return sprintf(buf, "%d\n", state);
2266 }
2267 
2268 static ssize_t usb_three_store(struct device *dev,
2269                                struct device_attribute *attr,
2270                                const char *buf, size_t count)
2271 {
2272         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2273         int state;
2274         int ret;
2275 
2276         ret = kstrtoint(buf, 0, &state);
2277         if (ret)
2278                 return ret;
2279         /*
2280          * Check for USB 3 mode where:
2281          * 0 - Disabled (Acts like a USB 2 port, saving power)
2282          * 1 - Enabled
2283          */
2284         if (state != 0 && state != 1)
2285                 return -EINVAL;
2286 
2287         ret = toshiba_usb_three_set(toshiba, state);
2288         if (ret)
2289                 return ret;
2290 
2291         pr_info("Reboot for changes to USB 3 to take effect");
2292 
2293         return count;
2294 }
2295 static DEVICE_ATTR_RW(usb_three);
2296 
2297 static ssize_t cooling_method_show(struct device *dev,
2298                                    struct device_attribute *attr, char *buf)
2299 {
2300         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2301         int state;
2302         int ret;
2303 
2304         ret = toshiba_cooling_method_get(toshiba, &state);
2305         if (ret < 0)
2306                 return ret;
2307 
2308         return sprintf(buf, "%d %d\n", state, toshiba->max_cooling_method);
2309 }
2310 
2311 static ssize_t cooling_method_store(struct device *dev,
2312                                     struct device_attribute *attr,
2313                                     const char *buf, size_t count)
2314 {
2315         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2316         int state;
2317         int ret;
2318 
2319         ret = kstrtoint(buf, 0, &state);
2320         if (ret)
2321                 return ret;
2322 
2323         /*
2324          * Check for supported values
2325          * Depending on the laptop model, some only support these two:
2326          * 0 - Maximum Performance
2327          * 1 - Battery Optimized
2328          *
2329          * While some others support all three methods:
2330          * 0 - Maximum Performance
2331          * 1 - Performance
2332          * 2 - Battery Optimized
2333          */
2334         if (state < 0 || state > toshiba->max_cooling_method)
2335                 return -EINVAL;
2336 
2337         ret = toshiba_cooling_method_set(toshiba, state);
2338         if (ret)
2339                 return ret;
2340 
2341         return count;
2342 }
2343 static DEVICE_ATTR_RW(cooling_method);
2344 
2345 static struct attribute *toshiba_attributes[] = {
2346         &dev_attr_version.attr,
2347         &dev_attr_fan.attr,
2348         &dev_attr_kbd_backlight_mode.attr,
2349         &dev_attr_kbd_type.attr,
2350         &dev_attr_available_kbd_modes.attr,
2351         &dev_attr_kbd_backlight_timeout.attr,
2352         &dev_attr_touchpad.attr,
2353         &dev_attr_position.attr,
2354         &dev_attr_usb_sleep_charge.attr,
2355         &dev_attr_sleep_functions_on_battery.attr,
2356         &dev_attr_usb_rapid_charge.attr,
2357         &dev_attr_usb_sleep_music.attr,
2358         &dev_attr_kbd_function_keys.attr,
2359         &dev_attr_panel_power_on.attr,
2360         &dev_attr_usb_three.attr,
2361         &dev_attr_cooling_method.attr,
2362         NULL,
2363 };
2364 
2365 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
2366                                         struct attribute *attr, int idx)
2367 {
2368         struct device *dev = container_of(kobj, struct device, kobj);
2369         struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
2370         bool exists = true;
2371 
2372         if (attr == &dev_attr_fan.attr)
2373                 exists = (drv->fan_supported) ? true : false;
2374         else if (attr == &dev_attr_kbd_backlight_mode.attr)
2375                 exists = (drv->kbd_illum_supported) ? true : false;
2376         else if (attr == &dev_attr_kbd_backlight_timeout.attr)
2377                 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
2378         else if (attr == &dev_attr_touchpad.attr)
2379                 exists = (drv->touchpad_supported) ? true : false;
2380         else if (attr == &dev_attr_position.attr)
2381                 exists = (drv->accelerometer_supported) ? true : false;
2382         else if (attr == &dev_attr_usb_sleep_charge.attr)
2383                 exists = (drv->usb_sleep_charge_supported) ? true : false;
2384         else if (attr == &dev_attr_sleep_functions_on_battery.attr)
2385                 exists = (drv->usb_sleep_charge_supported) ? true : false;
2386         else if (attr == &dev_attr_usb_rapid_charge.attr)
2387                 exists = (drv->usb_rapid_charge_supported) ? true : false;
2388         else if (attr == &dev_attr_usb_sleep_music.attr)
2389                 exists = (drv->usb_sleep_music_supported) ? true : false;
2390         else if (attr == &dev_attr_kbd_function_keys.attr)
2391                 exists = (drv->kbd_function_keys_supported) ? true : false;
2392         else if (attr == &dev_attr_panel_power_on.attr)
2393                 exists = (drv->panel_power_on_supported) ? true : false;
2394         else if (attr == &dev_attr_usb_three.attr)
2395                 exists = (drv->usb_three_supported) ? true : false;
2396         else if (attr == &dev_attr_cooling_method.attr)
2397                 exists = (drv->cooling_method_supported) ? true : false;
2398 
2399         return exists ? attr->mode : 0;
2400 }
2401 
2402 static struct attribute_group toshiba_attr_group = {
2403         .is_visible = toshiba_sysfs_is_visible,
2404         .attrs = toshiba_attributes,
2405 };
2406 
2407 static void toshiba_acpi_kbd_bl_work(struct work_struct *work)
2408 {
2409         struct acpi_device *acpi_dev = toshiba_acpi->acpi_dev;
2410 
2411         /* Update the sysfs entries */
2412         if (sysfs_update_group(&acpi_dev->dev.kobj,
2413                                &toshiba_attr_group))
2414                 pr_err("Unable to update sysfs entries\n");
2415 
2416         /* Emulate the keyboard backlight event */
2417         acpi_bus_generate_netlink_event(acpi_dev->pnp.device_class,
2418                                         dev_name(&acpi_dev->dev),
2419                                         0x92, 0);
2420 }
2421 
2422 /*
2423  * Misc device
2424  */
2425 static int toshiba_acpi_smm_bridge(SMMRegisters *regs)
2426 {
2427         u32 in[TCI_WORDS] = { regs->eax, regs->ebx, regs->ecx,
2428                               regs->edx, regs->esi, regs->edi };
2429         u32 out[TCI_WORDS];
2430         acpi_status status;
2431 
2432         status = tci_raw(toshiba_acpi, in, out);
2433         if (ACPI_FAILURE(status)) {
2434                 pr_err("ACPI call to query SMM registers failed\n");
2435                 return -EIO;
2436         }
2437 
2438         /* Fillout the SMM struct with the TCI call results */
2439         regs->eax = out[0];
2440         regs->ebx = out[1];
2441         regs->ecx = out[2];
2442         regs->edx = out[3];
2443         regs->esi = out[4];
2444         regs->edi = out[5];
2445 
2446         return 0;
2447 }
2448 
2449 static long toshiba_acpi_ioctl(struct file *fp, unsigned int cmd,
2450                                unsigned long arg)
2451 {
2452         SMMRegisters __user *argp = (SMMRegisters __user *)arg;
2453         SMMRegisters regs;
2454         int ret;
2455 
2456         if (!argp)
2457                 return -EINVAL;
2458 
2459         switch (cmd) {
2460         case TOSH_SMM:
2461                 if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
2462                         return -EFAULT;
2463                 ret = toshiba_acpi_smm_bridge(&regs);
2464                 if (ret)
2465                         return ret;
2466                 if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
2467                         return -EFAULT;
2468                 break;
2469         case TOSHIBA_ACPI_SCI:
2470                 if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
2471                         return -EFAULT;
2472                 /* Ensure we are being called with a SCI_{GET, SET} register */
2473                 if (regs.eax != SCI_GET && regs.eax != SCI_SET)
2474                         return -EINVAL;
2475                 if (!sci_open(toshiba_acpi))
2476                         return -EIO;
2477                 ret = toshiba_acpi_smm_bridge(&regs);
2478                 sci_close(toshiba_acpi);
2479                 if (ret)
2480                         return ret;
2481                 if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
2482                         return -EFAULT;
2483                 break;
2484         default:
2485                 return -EINVAL;
2486         }
2487 
2488         return 0;
2489 }
2490 
2491 static const struct file_operations toshiba_acpi_fops = {
2492         .owner          = THIS_MODULE,
2493         .unlocked_ioctl = toshiba_acpi_ioctl,
2494         .llseek         = noop_llseek,
2495 };
2496 
2497 /*
2498  * WWAN RFKill handlers
2499  */
2500 static int toshiba_acpi_wwan_set_block(void *data, bool blocked)
2501 {
2502         struct toshiba_acpi_dev *dev = data;
2503         int ret;
2504 
2505         ret = toshiba_wireless_status(dev);
2506         if (ret)
2507                 return ret;
2508 
2509         if (!dev->killswitch)
2510                 return 0;
2511 
2512         return toshiba_wwan_set(dev, !blocked);
2513 }
2514 
2515 static void toshiba_acpi_wwan_poll(struct rfkill *rfkill, void *data)
2516 {
2517         struct toshiba_acpi_dev *dev = data;
2518 
2519         if (toshiba_wireless_status(dev))
2520                 return;
2521 
2522         rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
2523 }
2524 
2525 static const struct rfkill_ops wwan_rfk_ops = {
2526         .set_block = toshiba_acpi_wwan_set_block,
2527         .poll = toshiba_acpi_wwan_poll,
2528 };
2529 
2530 static int toshiba_acpi_setup_wwan_rfkill(struct toshiba_acpi_dev *dev)
2531 {
2532         int ret = toshiba_wireless_status(dev);
2533 
2534         if (ret)
2535                 return ret;
2536 
2537         dev->wwan_rfk = rfkill_alloc("Toshiba WWAN",
2538                                      &dev->acpi_dev->dev,
2539                                      RFKILL_TYPE_WWAN,
2540                                      &wwan_rfk_ops,
2541                                      dev);
2542         if (!dev->wwan_rfk) {
2543                 pr_err("Unable to allocate WWAN rfkill device\n");
2544                 return -ENOMEM;
2545         }
2546 
2547         rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
2548 
2549         ret = rfkill_register(dev->wwan_rfk);
2550         if (ret) {
2551                 pr_err("Unable to register WWAN rfkill device\n");
2552                 rfkill_destroy(dev->wwan_rfk);
2553         }
2554 
2555         return ret;
2556 }
2557 
2558 /*
2559  * Hotkeys
2560  */
2561 static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
2562 {
2563         acpi_status status;
2564         u32 result;
2565 
2566         status = acpi_evaluate_object(dev->acpi_dev->handle,
2567                                       "ENAB", NULL, NULL);
2568         if (ACPI_FAILURE(status))
2569                 return -ENODEV;
2570 
2571         /*
2572          * Enable the "Special Functions" mode only if they are
2573          * supported and if they are activated.
2574          */
2575         if (dev->kbd_function_keys_supported && dev->special_functions)
2576                 result = hci_write(dev, HCI_HOTKEY_EVENT,
2577                                    HCI_HOTKEY_SPECIAL_FUNCTIONS);
2578         else
2579                 result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
2580 
2581         if (result == TOS_FAILURE)
2582                 return -EIO;
2583         else if (result == TOS_NOT_SUPPORTED)
2584                 return -ENODEV;
2585 
2586         return 0;
2587 }
2588 
2589 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
2590                                       struct serio *port)
2591 {
2592         if (str & I8042_STR_AUXDATA)
2593                 return false;
2594 
2595         if (unlikely(data == 0xe0))
2596                 return false;
2597 
2598         if ((data & 0x7f) == TOS1900_FN_SCAN) {
2599                 schedule_work(&toshiba_acpi->hotkey_work);
2600                 return true;
2601         }
2602 
2603         return false;
2604 }
2605 
2606 static void toshiba_acpi_hotkey_work(struct work_struct *work)
2607 {
2608         acpi_handle ec_handle = ec_get_handle();
2609         acpi_status status;
2610 
2611         if (!ec_handle)
2612                 return;
2613 
2614         status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
2615         if (ACPI_FAILURE(status))
2616                 pr_err("ACPI NTFY method execution failed\n");
2617 }
2618 
2619 /*
2620  * Returns hotkey scancode, or < 0 on failure.
2621  */
2622 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
2623 {
2624         unsigned long long value;
2625         acpi_status status;
2626 
2627         status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
2628                                       NULL, &value);
2629         if (ACPI_FAILURE(status)) {
2630                 pr_err("ACPI INFO method execution failed\n");
2631                 return -EIO;
2632         }
2633 
2634         return value;
2635 }
2636 
2637 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
2638                                        int scancode)
2639 {
2640         if (scancode == 0x100)
2641                 return;
2642 
2643         /* Act on key press; ignore key release */
2644         if (scancode & 0x80)
2645                 return;
2646 
2647         if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
2648                 pr_info("Unknown key %x\n", scancode);
2649 }
2650 
2651 static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
2652 {
2653         if (dev->info_supported) {
2654                 int scancode = toshiba_acpi_query_hotkey(dev);
2655 
2656                 if (scancode < 0) {
2657                         pr_err("Failed to query hotkey event\n");
2658                 } else if (scancode != 0) {
2659                         toshiba_acpi_report_hotkey(dev, scancode);
2660                         dev->key_event_valid = 1;
2661                         dev->last_key_event = scancode;
2662                 }
2663         } else if (dev->system_event_supported) {
2664                 u32 result;
2665                 u32 value;
2666                 int retries = 3;
2667 
2668                 do {
2669                         result = hci_read(dev, HCI_SYSTEM_EVENT, &value);
2670                         switch (result) {
2671                         case TOS_SUCCESS:
2672                                 toshiba_acpi_report_hotkey(dev, (int)value);
2673                                 dev->key_event_valid = 1;
2674                                 dev->last_key_event = value;
2675                                 break;
2676                         case TOS_NOT_SUPPORTED:
2677                                 /*
2678                                  * This is a workaround for an unresolved
2679                                  * issue on some machines where system events
2680                                  * sporadically become disabled.
2681                                  */
2682                                 result = hci_write(dev, HCI_SYSTEM_EVENT, 1);
2683                                 if (result == TOS_SUCCESS)
2684                                         pr_notice("Re-enabled hotkeys\n");
2685                                 /* Fall through */
2686                         default:
2687                                 retries--;
2688                                 break;
2689                         }
2690                 } while (retries && result != TOS_FIFO_EMPTY);
2691         }
2692 }
2693 
2694 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
2695 {
2696         const struct key_entry *keymap = toshiba_acpi_keymap;
2697         acpi_handle ec_handle;
2698         int error;
2699 
2700         if (disable_hotkeys) {
2701                 pr_info("Hotkeys disabled by module parameter\n");
2702                 return 0;
2703         }
2704 
2705         if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID)) {
2706                 pr_info("WMI event detected, hotkeys will not be monitored\n");
2707                 return 0;
2708         }
2709 
2710         error = toshiba_acpi_enable_hotkeys(dev);
2711         if (error)
2712                 return error;
2713 
2714         if (toshiba_hotkey_event_type_get(dev, &dev->hotkey_event_type))
2715                 pr_notice("Unable to query Hotkey Event Type\n");
2716 
2717         dev->hotkey_dev = input_allocate_device();
2718         if (!dev->hotkey_dev)
2719                 return -ENOMEM;
2720 
2721         dev->hotkey_dev->name = "Toshiba input device";
2722         dev->hotkey_dev->phys = "toshiba_acpi/input0";
2723         dev->hotkey_dev->id.bustype = BUS_HOST;
2724 
2725         if (dev->hotkey_event_type == HCI_SYSTEM_TYPE1 ||
2726             !dev->kbd_function_keys_supported)
2727                 keymap = toshiba_acpi_keymap;
2728         else if (dev->hotkey_event_type == HCI_SYSTEM_TYPE2 ||
2729                  dev->kbd_function_keys_supported)
2730                 keymap = toshiba_acpi_alt_keymap;
2731         else
2732                 pr_info("Unknown event type received %x\n",
2733                         dev->hotkey_event_type);
2734         error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
2735         if (error)
2736                 goto err_free_dev;
2737 
2738         /*
2739          * For some machines the SCI responsible for providing hotkey
2740          * notification doesn't fire. We can trigger the notification
2741          * whenever the Fn key is pressed using the NTFY method, if
2742          * supported, so if it's present set up an i8042 key filter
2743          * for this purpose.
2744          */
2745         ec_handle = ec_get_handle();
2746         if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
2747                 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
2748 
2749                 error = i8042_install_filter(toshiba_acpi_i8042_filter);
2750                 if (error) {
2751                         pr_err("Error installing key filter\n");
2752                         goto err_free_keymap;
2753                 }
2754 
2755                 dev->ntfy_supported = 1;
2756         }
2757 
2758         /*
2759          * Determine hotkey query interface. Prefer using the INFO
2760          * method when it is available.
2761          */
2762         if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
2763                 dev->info_supported = 1;
2764         else if (hci_write(dev, HCI_SYSTEM_EVENT, 1) == TOS_SUCCESS)
2765                 dev->system_event_supported = 1;
2766 
2767         if (!dev->info_supported && !dev->system_event_supported) {
2768                 pr_warn("No hotkey query interface found\n");
2769                 goto err_remove_filter;
2770         }
2771 
2772         error = input_register_device(dev->hotkey_dev);
2773         if (error) {
2774                 pr_info("Unable to register input device\n");
2775                 goto err_remove_filter;
2776         }
2777 
2778         return 0;
2779 
2780  err_remove_filter:
2781         if (dev->ntfy_supported)
2782                 i8042_remove_filter(toshiba_acpi_i8042_filter);
2783  err_free_keymap:
2784         sparse_keymap_free(dev->hotkey_dev);
2785  err_free_dev:
2786         input_free_device(dev->hotkey_dev);
2787         dev->hotkey_dev = NULL;
2788         return error;
2789 }
2790 
2791 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
2792 {
2793         struct backlight_properties props;
2794         int brightness;
2795         int ret;
2796 
2797         /*
2798          * Some machines don't support the backlight methods at all, and
2799          * others support it read-only. Either of these is pretty useless,
2800          * so only register the backlight device if the backlight method
2801          * supports both reads and writes.
2802          */
2803         brightness = __get_lcd_brightness(dev);
2804         if (brightness < 0)
2805                 return 0;
2806         /*
2807          * If transflective backlight is supported and the brightness is zero
2808          * (lowest brightness level), the set_lcd_brightness function will
2809          * activate the transflective backlight, making the LCD appear to be
2810          * turned off, simply increment the brightness level to avoid that.
2811          */
2812         if (dev->tr_backlight_supported && brightness == 0)
2813                 brightness++;
2814         ret = set_lcd_brightness(dev, brightness);
2815         if (ret) {
2816                 pr_debug("Backlight method is read-only, disabling backlight support\n");
2817                 return 0;
2818         }
2819 
2820         /*
2821          * Tell acpi-video-detect code to prefer vendor backlight on all
2822          * systems with transflective backlight and on dmi matched systems.
2823          */
2824         if (dev->tr_backlight_supported ||
2825             dmi_check_system(toshiba_vendor_backlight_dmi))
2826                 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2827 
2828         if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2829                 return 0;
2830 
2831         memset(&props, 0, sizeof(props));
2832         props.type = BACKLIGHT_PLATFORM;
2833         props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
2834 
2835         /* Adding an extra level and having 0 change to transflective mode */
2836         if (dev->tr_backlight_supported)
2837                 props.max_brightness++;
2838 
2839         dev->backlight_dev = backlight_device_register("toshiba",
2840                                                        &dev->acpi_dev->dev,
2841                                                        dev,
2842                                                        &toshiba_backlight_data,
2843                                                        &props);
2844         if (IS_ERR(dev->backlight_dev)) {
2845                 ret = PTR_ERR(dev->backlight_dev);
2846                 pr_err("Could not register toshiba backlight device\n");
2847                 dev->backlight_dev = NULL;
2848                 return ret;
2849         }
2850 
2851         dev->backlight_dev->props.brightness = brightness;
2852         return 0;
2853 }
2854 
2855 static void print_supported_features(struct toshiba_acpi_dev *dev)
2856 {
2857         pr_info("Supported laptop features:");
2858 
2859         if (dev->hotkey_dev)
2860                 pr_cont(" hotkeys");
2861         if (dev->backlight_dev)
2862                 pr_cont(" backlight");
2863         if (dev->video_supported)
2864                 pr_cont(" video-out");
2865         if (dev->fan_supported)
2866                 pr_cont(" fan");
2867         if (dev->tr_backlight_supported)
2868                 pr_cont(" transflective-backlight");
2869         if (dev->illumination_supported)
2870                 pr_cont(" illumination");
2871         if (dev->kbd_illum_supported)
2872                 pr_cont(" keyboard-backlight");
2873         if (dev->touchpad_supported)
2874                 pr_cont(" touchpad");
2875         if (dev->eco_supported)
2876                 pr_cont(" eco-led");
2877         if (dev->accelerometer_supported)
2878                 pr_cont(" accelerometer-axes");
2879         if (dev->usb_sleep_charge_supported)
2880                 pr_cont(" usb-sleep-charge");
2881         if (dev->usb_rapid_charge_supported)
2882                 pr_cont(" usb-rapid-charge");
2883         if (dev->usb_sleep_music_supported)
2884                 pr_cont(" usb-sleep-music");
2885         if (dev->kbd_function_keys_supported)
2886                 pr_cont(" special-function-keys");
2887         if (dev->panel_power_on_supported)
2888                 pr_cont(" panel-power-on");
2889         if (dev->usb_three_supported)
2890                 pr_cont(" usb3");
2891         if (dev->wwan_supported)
2892                 pr_cont(" wwan");
2893         if (dev->cooling_method_supported)
2894                 pr_cont(" cooling-method");
2895 
2896         pr_cont("\n");
2897 }
2898 
2899 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
2900 {
2901         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
2902 
2903         misc_deregister(&dev->miscdev);
2904 
2905         remove_toshiba_proc_entries(dev);
2906 
2907         if (dev->sysfs_created)
2908                 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
2909                                    &toshiba_attr_group);
2910 
2911         if (dev->ntfy_supported) {
2912                 i8042_remove_filter(toshiba_acpi_i8042_filter);
2913                 cancel_work_sync(&dev->hotkey_work);
2914         }
2915 
2916         if (dev->hotkey_dev) {
2917                 input_unregister_device(dev->hotkey_dev);
2918                 sparse_keymap_free(dev->hotkey_dev);
2919         }
2920 
2921         backlight_device_unregister(dev->backlight_dev);
2922 
2923         if (dev->illumination_led_registered)
2924                 led_classdev_unregister(&dev->led_dev);
2925 
2926         if (dev->kbd_led_registered)
2927                 led_classdev_unregister(&dev->kbd_led);
2928 
2929         if (dev->eco_led_registered)
2930                 led_classdev_unregister(&dev->eco_led);
2931 
2932         if (dev->wwan_rfk) {
2933                 rfkill_unregister(dev->wwan_rfk);
2934                 rfkill_destroy(dev->wwan_rfk);
2935         }
2936 
2937         if (toshiba_acpi)
2938                 toshiba_acpi = NULL;
2939 
2940         kfree(dev);
2941 
2942         return 0;
2943 }
2944 
2945 static const char *find_hci_method(acpi_handle handle)
2946 {
2947         if (acpi_has_method(handle, "GHCI"))
2948                 return "GHCI";
2949 
2950         if (acpi_has_method(handle, "SPFC"))
2951                 return "SPFC";
2952 
2953         return NULL;
2954 }
2955 
2956 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
2957 {
2958         struct toshiba_acpi_dev *dev;
2959         const char *hci_method;
2960         u32 dummy;
2961         int ret = 0;
2962 
2963         if (toshiba_acpi)
2964                 return -EBUSY;
2965 
2966         pr_info("Toshiba Laptop ACPI Extras version %s\n",
2967                TOSHIBA_ACPI_VERSION);
2968 
2969         hci_method = find_hci_method(acpi_dev->handle);
2970         if (!hci_method) {
2971                 pr_err("HCI interface not found\n");
2972                 return -ENODEV;
2973         }
2974 
2975         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2976         if (!dev)
2977                 return -ENOMEM;
2978         dev->acpi_dev = acpi_dev;
2979         dev->method_hci = hci_method;
2980         dev->miscdev.minor = MISC_DYNAMIC_MINOR;
2981         dev->miscdev.name = "toshiba_acpi";
2982         dev->miscdev.fops = &toshiba_acpi_fops;
2983 
2984         ret = misc_register(&dev->miscdev);
2985         if (ret) {
2986                 pr_err("Failed to register miscdevice\n");
2987                 kfree(dev);
2988                 return ret;
2989         }
2990 
2991         acpi_dev->driver_data = dev;
2992         dev_set_drvdata(&acpi_dev->dev, dev);
2993 
2994         /* Query the BIOS for supported features */
2995 
2996         /*
2997          * The "Special Functions" are always supported by the laptops
2998          * with the new keyboard layout, query for its presence to help
2999          * determine the keymap layout to use.
3000          */
3001         ret = toshiba_function_keys_get(dev, &dev->special_functions);
3002         dev->kbd_function_keys_supported = !ret;
3003 
3004         dev->hotkey_event_type = 0;
3005         if (toshiba_acpi_setup_keyboard(dev))
3006                 pr_info("Unable to activate hotkeys\n");
3007 
3008         /* Determine whether or not BIOS supports transflective backlight */
3009         ret = get_tr_backlight_status(dev, &dummy);
3010         dev->tr_backlight_supported = !ret;
3011 
3012         ret = toshiba_acpi_setup_backlight(dev);
3013         if (ret)
3014                 goto error;
3015 
3016         toshiba_illumination_available(dev);
3017         if (dev->illumination_supported) {
3018                 dev->led_dev.name = "toshiba::illumination";
3019                 dev->led_dev.max_brightness = 1;
3020                 dev->led_dev.brightness_set = toshiba_illumination_set;
3021                 dev->led_dev.brightness_get = toshiba_illumination_get;
3022                 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
3023                         dev->illumination_led_registered = true;
3024         }
3025 
3026         toshiba_eco_mode_available(dev);
3027         if (dev->eco_supported) {
3028                 dev->eco_led.name = "toshiba::eco_mode";
3029                 dev->eco_led.max_brightness = 1;
3030                 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
3031                 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
3032                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
3033                         dev->eco_led_registered = true;
3034         }
3035 
3036         toshiba_kbd_illum_available(dev);
3037         /*
3038          * Only register the LED if KBD illumination is supported
3039          * and the keyboard backlight operation mode is set to FN-Z
3040          */
3041         if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
3042                 dev->kbd_led.name = "toshiba::kbd_backlight";
3043                 dev->kbd_led.max_brightness = 1;
3044                 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
3045                 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
3046                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
3047                         dev->kbd_led_registered = true;
3048         }
3049 
3050         ret = toshiba_touchpad_get(dev, &dummy);
3051         dev->touchpad_supported = !ret;
3052 
3053         toshiba_accelerometer_available(dev);
3054 
3055         toshiba_usb_sleep_charge_available(dev);
3056 
3057         ret = toshiba_usb_rapid_charge_get(dev, &dummy);
3058         dev->usb_rapid_charge_supported = !ret;
3059 
3060         ret = toshiba_usb_sleep_music_get(dev, &dummy);
3061         dev->usb_sleep_music_supported = !ret;
3062 
3063         ret = toshiba_panel_power_on_get(dev, &dummy);
3064         dev->panel_power_on_supported = !ret;
3065 
3066         ret = toshiba_usb_three_get(dev, &dummy);
3067         dev->usb_three_supported = !ret;
3068 
3069         ret = get_video_status(dev, &dummy);
3070         dev->video_supported = !ret;
3071 
3072         ret = get_fan_status(dev, &dummy);
3073         dev->fan_supported = !ret;
3074 
3075         toshiba_wwan_available(dev);
3076         if (dev->wwan_supported)
3077                 toshiba_acpi_setup_wwan_rfkill(dev);
3078 
3079         toshiba_cooling_method_available(dev);
3080 
3081         print_supported_features(dev);
3082 
3083         ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
3084                                  &toshiba_attr_group);
3085         if (ret) {
3086                 dev->sysfs_created = 0;
3087                 goto error;
3088         }
3089         dev->sysfs_created = !ret;
3090 
3091         create_toshiba_proc_entries(dev);
3092 
3093         toshiba_acpi = dev;
3094 
3095         return 0;
3096 
3097 error:
3098         toshiba_acpi_remove(acpi_dev);
3099         return ret;
3100 }
3101 
3102 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
3103 {
3104         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
3105 
3106         switch (event) {
3107         case 0x80: /* Hotkeys and some system events */
3108                 /*
3109                  * Machines with this WMI GUID aren't supported due to bugs in
3110                  * their AML.
3111                  *
3112                  * Return silently to avoid triggering a netlink event.
3113                  */
3114                 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
3115                         return;
3116                 toshiba_acpi_process_hotkeys(dev);
3117                 break;
3118         case 0x81: /* Dock events */
3119         case 0x82:
3120         case 0x83:
3121                 pr_info("Dock event received %x\n", event);
3122                 break;
3123         case 0x88: /* Thermal events */
3124                 pr_info("Thermal event received\n");
3125                 break;
3126         case 0x8f: /* LID closed */
3127         case 0x90: /* LID is closed and Dock has been ejected */
3128                 break;
3129         case 0x8c: /* SATA power events */
3130         case 0x8b:
3131                 pr_info("SATA power event received %x\n", event);
3132                 break;
3133         case 0x92: /* Keyboard backlight mode changed */
3134                 toshiba_acpi->kbd_event_generated = true;
3135                 /* Update sysfs entries */
3136                 if (sysfs_update_group(&acpi_dev->dev.kobj,
3137                                        &toshiba_attr_group))
3138                         pr_err("Unable to update sysfs entries\n");
3139                 break;
3140         case 0x85: /* Unknown */
3141         case 0x8d: /* Unknown */
3142         case 0x8e: /* Unknown */
3143         case 0x94: /* Unknown */
3144         case 0x95: /* Unknown */
3145         default:
3146                 pr_info("Unknown event received %x\n", event);
3147                 break;
3148         }
3149 
3150         acpi_bus_generate_netlink_event(acpi_dev->pnp.device_class,
3151                                         dev_name(&acpi_dev->dev),
3152                                         event, (event == 0x80) ?
3153                                         dev->last_key_event : 0);
3154 }
3155 
3156 #ifdef CONFIG_PM_SLEEP
3157 static int toshiba_acpi_suspend(struct device *device)
3158 {
3159         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
3160 
3161         if (dev->hotkey_dev) {
3162                 u32 result;
3163 
3164                 result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
3165                 if (result != TOS_SUCCESS)
3166                         pr_info("Unable to disable hotkeys\n");
3167         }
3168 
3169         return 0;
3170 }
3171 
3172 static int toshiba_acpi_resume(struct device *device)
3173 {
3174         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
3175 
3176         if (dev->hotkey_dev) {
3177                 if (toshiba_acpi_enable_hotkeys(dev))
3178                         pr_info("Unable to re-enable hotkeys\n");
3179         }
3180 
3181         if (dev->wwan_rfk) {
3182                 if (!toshiba_wireless_status(dev))
3183                         rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
3184         }
3185 
3186         return 0;
3187 }
3188 #endif
3189 
3190 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
3191                          toshiba_acpi_suspend, toshiba_acpi_resume);
3192 
3193 static struct acpi_driver toshiba_acpi_driver = {
3194         .name   = "Toshiba ACPI driver",
3195         .owner  = THIS_MODULE,
3196         .ids    = toshiba_device_ids,
3197         .flags  = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
3198         .ops    = {
3199                 .add            = toshiba_acpi_add,
3200                 .remove         = toshiba_acpi_remove,
3201                 .notify         = toshiba_acpi_notify,
3202         },
3203         .drv.pm = &toshiba_acpi_pm,
3204 };
3205 
3206 static int __init toshiba_acpi_init(void)
3207 {
3208         int ret;
3209 
3210         toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
3211         if (!toshiba_proc_dir) {
3212                 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
3213                 return -ENODEV;
3214         }
3215 
3216         ret = acpi_bus_register_driver(&toshiba_acpi_driver);
3217         if (ret) {
3218                 pr_err("Failed to register ACPI driver: %d\n", ret);
3219                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
3220         }
3221 
3222         return ret;
3223 }
3224 
3225 static void __exit toshiba_acpi_exit(void)
3226 {
3227         acpi_bus_unregister_driver(&toshiba_acpi_driver);
3228         if (toshiba_proc_dir)
3229                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
3230 }
3231 
3232 module_init(toshiba_acpi_init);
3233 module_exit(toshiba_acpi_exit);
3234 

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