Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

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    "0.21"
 35 #define PROC_INTERFACE_VERSION  1
 36 
 37 #include <linux/kernel.h>
 38 #include <linux/module.h>
 39 #include <linux/init.h>
 40 #include <linux/types.h>
 41 #include <linux/proc_fs.h>
 42 #include <linux/seq_file.h>
 43 #include <linux/backlight.h>
 44 #include <linux/rfkill.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 
 55 MODULE_AUTHOR("John Belmonte");
 56 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
 57 MODULE_LICENSE("GPL");
 58 
 59 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
 60 
 61 /* Scan code for Fn key on TOS1900 models */
 62 #define TOS1900_FN_SCAN         0x6e
 63 
 64 /* Toshiba ACPI method paths */
 65 #define METHOD_VIDEO_OUT        "\\_SB_.VALX.DSSX"
 66 
 67 /*
 68  * The Toshiba configuration interface is composed of the HCI and the SCI,
 69  * which are defined as follows:
 70  *
 71  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
 72  * be uniform across all their models.  Ideally we would just call
 73  * dedicated ACPI methods instead of using this primitive interface.
 74  * However the ACPI methods seem to be incomplete in some areas (for
 75  * example they allow setting, but not reading, the LCD brightness value),
 76  * so this is still useful.
 77  *
 78  * SCI stands for "System Configuration Interface" which aim is to
 79  * conceal differences in hardware between different models.
 80  */
 81 
 82 #define TCI_WORDS                       6
 83 
 84 /* operations */
 85 #define HCI_SET                         0xff00
 86 #define HCI_GET                         0xfe00
 87 #define SCI_OPEN                        0xf100
 88 #define SCI_CLOSE                       0xf200
 89 #define SCI_GET                         0xf300
 90 #define SCI_SET                         0xf400
 91 
 92 /* return codes */
 93 #define TOS_SUCCESS                     0x0000
 94 #define TOS_OPEN_CLOSE_OK               0x0044
 95 #define TOS_FAILURE                     0x1000
 96 #define TOS_NOT_SUPPORTED               0x8000
 97 #define TOS_ALREADY_OPEN                0x8100
 98 #define TOS_NOT_OPENED                  0x8200
 99 #define TOS_INPUT_DATA_ERROR            0x8300
100 #define TOS_WRITE_PROTECTED             0x8400
101 #define TOS_NOT_PRESENT                 0x8600
102 #define TOS_FIFO_EMPTY                  0x8c00
103 #define TOS_DATA_NOT_AVAILABLE          0x8d20
104 #define TOS_NOT_INITIALIZED             0x8d50
105 #define TOS_NOT_INSTALLED               0x8e00
106 
107 /* registers */
108 #define HCI_FAN                         0x0004
109 #define HCI_TR_BACKLIGHT                0x0005
110 #define HCI_SYSTEM_EVENT                0x0016
111 #define HCI_VIDEO_OUT                   0x001c
112 #define HCI_HOTKEY_EVENT                0x001e
113 #define HCI_LCD_BRIGHTNESS              0x002a
114 #define HCI_WIRELESS                    0x0056
115 #define HCI_ACCELEROMETER               0x006d
116 #define HCI_KBD_ILLUMINATION            0x0095
117 #define HCI_ECO_MODE                    0x0097
118 #define HCI_ACCELEROMETER2              0x00a6
119 #define SCI_PANEL_POWER_ON              0x010d
120 #define SCI_ILLUMINATION                0x014e
121 #define SCI_USB_SLEEP_CHARGE            0x0150
122 #define SCI_KBD_ILLUM_STATUS            0x015c
123 #define SCI_USB_SLEEP_MUSIC             0x015e
124 #define SCI_USB_THREE                   0x0169
125 #define SCI_TOUCHPAD                    0x050e
126 #define SCI_KBD_FUNCTION_KEYS           0x0522
127 
128 /* field definitions */
129 #define HCI_ACCEL_MASK                  0x7fff
130 #define HCI_HOTKEY_DISABLE              0x0b
131 #define HCI_HOTKEY_ENABLE               0x09
132 #define HCI_LCD_BRIGHTNESS_BITS         3
133 #define HCI_LCD_BRIGHTNESS_SHIFT        (16-HCI_LCD_BRIGHTNESS_BITS)
134 #define HCI_LCD_BRIGHTNESS_LEVELS       (1 << HCI_LCD_BRIGHTNESS_BITS)
135 #define HCI_MISC_SHIFT                  0x10
136 #define HCI_VIDEO_OUT_LCD               0x1
137 #define HCI_VIDEO_OUT_CRT               0x2
138 #define HCI_VIDEO_OUT_TV                0x4
139 #define HCI_WIRELESS_KILL_SWITCH        0x01
140 #define HCI_WIRELESS_BT_PRESENT         0x0f
141 #define HCI_WIRELESS_BT_ATTACH          0x40
142 #define HCI_WIRELESS_BT_POWER           0x80
143 #define SCI_KBD_MODE_MASK               0x1f
144 #define SCI_KBD_MODE_FNZ                0x1
145 #define SCI_KBD_MODE_AUTO               0x2
146 #define SCI_KBD_MODE_ON                 0x8
147 #define SCI_KBD_MODE_OFF                0x10
148 #define SCI_KBD_TIME_MAX                0x3c001a
149 #define SCI_USB_CHARGE_MODE_MASK        0xff
150 #define SCI_USB_CHARGE_DISABLED         0x30000
151 #define SCI_USB_CHARGE_ALTERNATE        0x30009
152 #define SCI_USB_CHARGE_AUTO             0x30021
153 #define SCI_USB_CHARGE_BAT_MASK         0x7
154 #define SCI_USB_CHARGE_BAT_LVL_OFF      0x1
155 #define SCI_USB_CHARGE_BAT_LVL_ON       0x4
156 #define SCI_USB_CHARGE_BAT_LVL          0x0200
157 #define SCI_USB_CHARGE_RAPID_DSP        0x0300
158 
159 struct toshiba_acpi_dev {
160         struct acpi_device *acpi_dev;
161         const char *method_hci;
162         struct rfkill *bt_rfk;
163         struct input_dev *hotkey_dev;
164         struct work_struct hotkey_work;
165         struct backlight_device *backlight_dev;
166         struct led_classdev led_dev;
167         struct led_classdev kbd_led;
168         struct led_classdev eco_led;
169 
170         int force_fan;
171         int last_key_event;
172         int key_event_valid;
173         int kbd_type;
174         int kbd_mode;
175         int kbd_time;
176         int usbsc_bat_level;
177 
178         unsigned int illumination_supported:1;
179         unsigned int video_supported:1;
180         unsigned int fan_supported:1;
181         unsigned int system_event_supported:1;
182         unsigned int ntfy_supported:1;
183         unsigned int info_supported:1;
184         unsigned int tr_backlight_supported:1;
185         unsigned int kbd_illum_supported:1;
186         unsigned int kbd_led_registered:1;
187         unsigned int touchpad_supported:1;
188         unsigned int eco_supported:1;
189         unsigned int accelerometer_supported:1;
190         unsigned int usb_sleep_charge_supported:1;
191         unsigned int usb_rapid_charge_supported:1;
192         unsigned int usb_sleep_music_supported:1;
193         unsigned int kbd_function_keys_supported:1;
194         unsigned int panel_power_on_supported:1;
195         unsigned int usb_three_supported:1;
196         unsigned int sysfs_created:1;
197 
198         struct mutex mutex;
199 };
200 
201 static struct toshiba_acpi_dev *toshiba_acpi;
202 
203 static const struct acpi_device_id toshiba_device_ids[] = {
204         {"TOS6200", 0},
205         {"TOS6207", 0},
206         {"TOS6208", 0},
207         {"TOS1900", 0},
208         {"", 0},
209 };
210 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
211 
212 static const struct key_entry toshiba_acpi_keymap[] = {
213         { KE_KEY, 0x9e, { KEY_RFKILL } },
214         { KE_KEY, 0x101, { KEY_MUTE } },
215         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
216         { KE_KEY, 0x103, { KEY_ZOOMIN } },
217         { KE_KEY, 0x10f, { KEY_TAB } },
218         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
219         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
220         { KE_KEY, 0x13b, { KEY_COFFEE } },
221         { KE_KEY, 0x13c, { KEY_BATTERY } },
222         { KE_KEY, 0x13d, { KEY_SLEEP } },
223         { KE_KEY, 0x13e, { KEY_SUSPEND } },
224         { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
225         { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
226         { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
227         { KE_KEY, 0x142, { KEY_WLAN } },
228         { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
229         { KE_KEY, 0x17f, { KEY_FN } },
230         { KE_KEY, 0xb05, { KEY_PROG2 } },
231         { KE_KEY, 0xb06, { KEY_WWW } },
232         { KE_KEY, 0xb07, { KEY_MAIL } },
233         { KE_KEY, 0xb30, { KEY_STOP } },
234         { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
235         { KE_KEY, 0xb32, { KEY_NEXTSONG } },
236         { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
237         { KE_KEY, 0xb5a, { KEY_MEDIA } },
238         { KE_IGNORE, 0x1430, { KEY_RESERVED } }, /* Wake from sleep */
239         { KE_IGNORE, 0x1501, { KEY_RESERVED } }, /* Output changed */
240         { KE_IGNORE, 0x1502, { KEY_RESERVED } }, /* HDMI plugged/unplugged */
241         { KE_IGNORE, 0x1ABE, { KEY_RESERVED } }, /* Protection level set */
242         { KE_IGNORE, 0x1ABF, { KEY_RESERVED } }, /* Protection level off */
243         { KE_END, 0 },
244 };
245 
246 /* alternative keymap */
247 static const struct dmi_system_id toshiba_alt_keymap_dmi[] = {
248         {
249                 .matches = {
250                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
251                         DMI_MATCH(DMI_PRODUCT_NAME, "Satellite M840"),
252                 },
253         },
254         {
255                 .matches = {
256                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
257                         DMI_MATCH(DMI_PRODUCT_NAME, "Qosmio X75-A"),
258                 },
259         },
260         {
261                 .matches = {
262                         DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
263                         DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A50-A"),
264                 },
265         },
266         {}
267 };
268 
269 static const struct key_entry toshiba_acpi_alt_keymap[] = {
270         { KE_KEY, 0x157, { KEY_MUTE } },
271         { KE_KEY, 0x102, { KEY_ZOOMOUT } },
272         { KE_KEY, 0x103, { KEY_ZOOMIN } },
273         { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
274         { KE_KEY, 0x139, { KEY_ZOOMRESET } },
275         { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
276         { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
277         { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
278         { KE_KEY, 0x158, { KEY_WLAN } },
279         { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
280         { KE_END, 0 },
281 };
282 
283 /*
284  * Utility
285  */
286 
287 static inline void _set_bit(u32 *word, u32 mask, int value)
288 {
289         *word = (*word & ~mask) | (mask * value);
290 }
291 
292 /*
293  * ACPI interface wrappers
294  */
295 
296 static int write_acpi_int(const char *methodName, int val)
297 {
298         acpi_status status;
299 
300         status = acpi_execute_simple_method(NULL, (char *)methodName, val);
301         return (status == AE_OK) ? 0 : -EIO;
302 }
303 
304 /*
305  * Perform a raw configuration call.  Here we don't care about input or output
306  * buffer format.
307  */
308 static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
309                            const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
310 {
311         struct acpi_object_list params;
312         union acpi_object in_objs[TCI_WORDS];
313         struct acpi_buffer results;
314         union acpi_object out_objs[TCI_WORDS + 1];
315         acpi_status status;
316         int i;
317 
318         params.count = TCI_WORDS;
319         params.pointer = in_objs;
320         for (i = 0; i < TCI_WORDS; ++i) {
321                 in_objs[i].type = ACPI_TYPE_INTEGER;
322                 in_objs[i].integer.value = in[i];
323         }
324 
325         results.length = sizeof(out_objs);
326         results.pointer = out_objs;
327 
328         status = acpi_evaluate_object(dev->acpi_dev->handle,
329                                       (char *)dev->method_hci, &params,
330                                       &results);
331         if ((status == AE_OK) && (out_objs->package.count <= TCI_WORDS)) {
332                 for (i = 0; i < out_objs->package.count; ++i)
333                         out[i] = out_objs->package.elements[i].integer.value;
334         }
335 
336         return status;
337 }
338 
339 /*
340  * Common hci tasks (get or set one or two value)
341  *
342  * In addition to the ACPI status, the HCI system returns a result which
343  * may be useful (such as "not supported").
344  */
345 
346 static u32 hci_write1(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
347 {
348         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
349         u32 out[TCI_WORDS];
350         acpi_status status = tci_raw(dev, in, out);
351 
352         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
353 }
354 
355 static u32 hci_read1(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
356 {
357         u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
358         u32 out[TCI_WORDS];
359         acpi_status status = tci_raw(dev, in, out);
360 
361         if (ACPI_FAILURE(status))
362                 return TOS_FAILURE;
363 
364         *out1 = out[2];
365 
366         return out[0];
367 }
368 
369 static u32 hci_write2(struct toshiba_acpi_dev *dev, u32 reg, u32 in1, u32 in2)
370 {
371         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
372         u32 out[TCI_WORDS];
373         acpi_status status = tci_raw(dev, in, out);
374 
375         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
376 }
377 
378 static u32 hci_read2(struct toshiba_acpi_dev *dev,
379                      u32 reg, u32 *out1, u32 *out2)
380 {
381         u32 in[TCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
382         u32 out[TCI_WORDS];
383         acpi_status status = tci_raw(dev, in, out);
384 
385         if (ACPI_FAILURE(status))
386                 return TOS_FAILURE;
387 
388         *out1 = out[2];
389         *out2 = out[3];
390 
391         return out[0];
392 }
393 
394 /*
395  * Common sci tasks
396  */
397 
398 static int sci_open(struct toshiba_acpi_dev *dev)
399 {
400         u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
401         u32 out[TCI_WORDS];
402         acpi_status status;
403 
404         status = tci_raw(dev, in, out);
405         if  (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
406                 pr_err("ACPI call to open SCI failed\n");
407                 return 0;
408         }
409 
410         if (out[0] == TOS_OPEN_CLOSE_OK) {
411                 return 1;
412         } else if (out[0] == TOS_ALREADY_OPEN) {
413                 pr_info("Toshiba SCI already opened\n");
414                 return 1;
415         } else if (out[0] == TOS_NOT_SUPPORTED) {
416                 /*
417                  * Some BIOSes do not have the SCI open/close functions
418                  * implemented and return 0x8000 (Not Supported), failing to
419                  * register some supported features.
420                  *
421                  * Simply return 1 if we hit those affected laptops to make the
422                  * supported features work.
423                  *
424                  * In the case that some laptops really do not support the SCI,
425                  * all the SCI dependent functions check for TOS_NOT_SUPPORTED,
426                  * and thus, not registering support for the queried feature.
427                  */
428                 return 1;
429         } else if (out[0] == TOS_NOT_PRESENT) {
430                 pr_info("Toshiba SCI is not present\n");
431         }
432 
433         return 0;
434 }
435 
436 static void sci_close(struct toshiba_acpi_dev *dev)
437 {
438         u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
439         u32 out[TCI_WORDS];
440         acpi_status status;
441 
442         status = tci_raw(dev, in, out);
443         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
444                 pr_err("ACPI call to close SCI failed\n");
445                 return;
446         }
447 
448         if (out[0] == TOS_OPEN_CLOSE_OK)
449                 return;
450         else if (out[0] == TOS_NOT_OPENED)
451                 pr_info("Toshiba SCI not opened\n");
452         else if (out[0] == TOS_NOT_PRESENT)
453                 pr_info("Toshiba SCI is not present\n");
454 }
455 
456 static u32 sci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
457 {
458         u32 in[TCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
459         u32 out[TCI_WORDS];
460         acpi_status status = tci_raw(dev, in, out);
461 
462         if (ACPI_FAILURE(status))
463                 return TOS_FAILURE;
464 
465         *out1 = out[2];
466 
467         return out[0];
468 }
469 
470 static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
471 {
472         u32 in[TCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
473         u32 out[TCI_WORDS];
474         acpi_status status = tci_raw(dev, in, out);
475 
476         return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
477 }
478 
479 /* Illumination support */
480 static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
481 {
482         u32 in[TCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
483         u32 out[TCI_WORDS];
484         acpi_status status;
485 
486         if (!sci_open(dev))
487                 return 0;
488 
489         status = tci_raw(dev, in, out);
490         sci_close(dev);
491         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
492                 pr_err("ACPI call to query Illumination support failed\n");
493                 return 0;
494         } else if (out[0] == TOS_NOT_SUPPORTED) {
495                 pr_info("Illumination device not available\n");
496                 return 0;
497         }
498 
499         return 1;
500 }
501 
502 static void toshiba_illumination_set(struct led_classdev *cdev,
503                                      enum led_brightness brightness)
504 {
505         struct toshiba_acpi_dev *dev = container_of(cdev,
506                         struct toshiba_acpi_dev, led_dev);
507         u32 state, result;
508 
509         /* First request : initialize communication. */
510         if (!sci_open(dev))
511                 return;
512 
513         /* Switch the illumination on/off */
514         state = brightness ? 1 : 0;
515         result = sci_write(dev, SCI_ILLUMINATION, state);
516         sci_close(dev);
517         if (result == TOS_FAILURE) {
518                 pr_err("ACPI call for illumination failed\n");
519                 return;
520         } else if (result == TOS_NOT_SUPPORTED) {
521                 pr_info("Illumination not supported\n");
522                 return;
523         }
524 }
525 
526 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
527 {
528         struct toshiba_acpi_dev *dev = container_of(cdev,
529                         struct toshiba_acpi_dev, led_dev);
530         u32 state, result;
531 
532         /* First request : initialize communication. */
533         if (!sci_open(dev))
534                 return LED_OFF;
535 
536         /* Check the illumination */
537         result = sci_read(dev, SCI_ILLUMINATION, &state);
538         sci_close(dev);
539         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
540                 pr_err("ACPI call for illumination failed\n");
541                 return LED_OFF;
542         } else if (result == TOS_NOT_SUPPORTED) {
543                 pr_info("Illumination not supported\n");
544                 return LED_OFF;
545         }
546 
547         return state ? LED_FULL : LED_OFF;
548 }
549 
550 /* KBD Illumination */
551 static int toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
552 {
553         u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
554         u32 out[TCI_WORDS];
555         acpi_status status;
556 
557         if (!sci_open(dev))
558                 return 0;
559 
560         status = tci_raw(dev, in, out);
561         sci_close(dev);
562         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
563                 pr_err("ACPI call to query kbd illumination support failed\n");
564                 return 0;
565         } else if (out[0] == TOS_NOT_SUPPORTED) {
566                 pr_info("Keyboard illumination not available\n");
567                 return 0;
568         }
569 
570         /*
571          * Check for keyboard backlight timeout max value,
572          * previous kbd backlight implementation set this to
573          * 0x3c0003, and now the new implementation set this
574          * to 0x3c001a, use this to distinguish between them.
575          */
576         if (out[3] == SCI_KBD_TIME_MAX)
577                 dev->kbd_type = 2;
578         else
579                 dev->kbd_type = 1;
580         /* Get the current keyboard backlight mode */
581         dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
582         /* Get the current time (1-60 seconds) */
583         dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
584 
585         return 1;
586 }
587 
588 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
589 {
590         u32 result;
591 
592         if (!sci_open(dev))
593                 return -EIO;
594 
595         result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
596         sci_close(dev);
597         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
598                 pr_err("ACPI call to set KBD backlight status failed\n");
599                 return -EIO;
600         } else if (result == TOS_NOT_SUPPORTED) {
601                 pr_info("Keyboard backlight status not supported\n");
602                 return -ENODEV;
603         }
604 
605         return 0;
606 }
607 
608 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
609 {
610         u32 result;
611 
612         if (!sci_open(dev))
613                 return -EIO;
614 
615         result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
616         sci_close(dev);
617         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
618                 pr_err("ACPI call to get KBD backlight status failed\n");
619                 return -EIO;
620         } else if (result == TOS_NOT_SUPPORTED) {
621                 pr_info("Keyboard backlight status not supported\n");
622                 return -ENODEV;
623         }
624 
625         return 0;
626 }
627 
628 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
629 {
630         struct toshiba_acpi_dev *dev = container_of(cdev,
631                         struct toshiba_acpi_dev, kbd_led);
632         u32 state, result;
633 
634         /* Check the keyboard backlight state */
635         result = hci_read1(dev, HCI_KBD_ILLUMINATION, &state);
636         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
637                 pr_err("ACPI call to get the keyboard backlight failed\n");
638                 return LED_OFF;
639         } else if (result == TOS_NOT_SUPPORTED) {
640                 pr_info("Keyboard backlight not supported\n");
641                 return LED_OFF;
642         }
643 
644         return state ? LED_FULL : LED_OFF;
645 }
646 
647 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
648                                      enum led_brightness brightness)
649 {
650         struct toshiba_acpi_dev *dev = container_of(cdev,
651                         struct toshiba_acpi_dev, kbd_led);
652         u32 state, result;
653 
654         /* Set the keyboard backlight state */
655         state = brightness ? 1 : 0;
656         result = hci_write1(dev, HCI_KBD_ILLUMINATION, state);
657         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
658                 pr_err("ACPI call to set KBD Illumination mode failed\n");
659                 return;
660         } else if (result == TOS_NOT_SUPPORTED) {
661                 pr_info("Keyboard backlight not supported\n");
662                 return;
663         }
664 }
665 
666 /* TouchPad support */
667 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
668 {
669         u32 result;
670 
671         if (!sci_open(dev))
672                 return -EIO;
673 
674         result = sci_write(dev, SCI_TOUCHPAD, state);
675         sci_close(dev);
676         if (result == TOS_FAILURE) {
677                 pr_err("ACPI call to set the touchpad failed\n");
678                 return -EIO;
679         } else if (result == TOS_NOT_SUPPORTED) {
680                 return -ENODEV;
681         }
682 
683         return 0;
684 }
685 
686 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
687 {
688         u32 result;
689 
690         if (!sci_open(dev))
691                 return -EIO;
692 
693         result = sci_read(dev, SCI_TOUCHPAD, state);
694         sci_close(dev);
695         if (result == TOS_FAILURE) {
696                 pr_err("ACPI call to query the touchpad failed\n");
697                 return -EIO;
698         } else if (result == TOS_NOT_SUPPORTED) {
699                 return -ENODEV;
700         }
701 
702         return 0;
703 }
704 
705 /* Eco Mode support */
706 static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
707 {
708         acpi_status status;
709         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
710         u32 out[TCI_WORDS];
711 
712         status = tci_raw(dev, in, out);
713         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
714                 pr_err("ACPI call to get ECO led failed\n");
715         } else if (out[0] == TOS_NOT_INSTALLED) {
716                 pr_info("ECO led not installed");
717         } else if (out[0] == TOS_INPUT_DATA_ERROR) {
718                 /*
719                  * If we receive 0x8300 (Input Data Error), it means that the
720                  * LED device is present, but that we just screwed the input
721                  * parameters.
722                  *
723                  * Let's query the status of the LED to see if we really have a
724                  * success response, indicating the actual presense of the LED,
725                  * bail out otherwise.
726                  */
727                 in[3] = 1;
728                 status = tci_raw(dev, in, out);
729                 if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE)
730                         pr_err("ACPI call to get ECO led failed\n");
731                 else if (out[0] == TOS_SUCCESS)
732                         return 1;
733         }
734 
735         return 0;
736 }
737 
738 static enum led_brightness
739 toshiba_eco_mode_get_status(struct led_classdev *cdev)
740 {
741         struct toshiba_acpi_dev *dev = container_of(cdev,
742                         struct toshiba_acpi_dev, eco_led);
743         u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
744         u32 out[TCI_WORDS];
745         acpi_status status;
746 
747         status = tci_raw(dev, in, out);
748         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
749                 pr_err("ACPI call to get ECO led failed\n");
750                 return LED_OFF;
751         }
752 
753         return out[2] ? LED_FULL : LED_OFF;
754 }
755 
756 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
757                                      enum led_brightness brightness)
758 {
759         struct toshiba_acpi_dev *dev = container_of(cdev,
760                         struct toshiba_acpi_dev, eco_led);
761         u32 in[TCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
762         u32 out[TCI_WORDS];
763         acpi_status status;
764 
765         /* Switch the Eco Mode led on/off */
766         in[2] = (brightness) ? 1 : 0;
767         status = tci_raw(dev, in, out);
768         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
769                 pr_err("ACPI call to set ECO led failed\n");
770                 return;
771         }
772 }
773 
774 /* Accelerometer support */
775 static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
776 {
777         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
778         u32 out[TCI_WORDS];
779         acpi_status status;
780 
781         /*
782          * Check if the accelerometer call exists,
783          * this call also serves as initialization
784          */
785         status = tci_raw(dev, in, out);
786         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
787                 pr_err("ACPI call to query the accelerometer failed\n");
788                 return -EIO;
789         } else if (out[0] == TOS_DATA_NOT_AVAILABLE ||
790                    out[0] == TOS_NOT_INITIALIZED) {
791                 pr_err("Accelerometer not initialized\n");
792                 return -EIO;
793         } else if (out[0] == TOS_NOT_SUPPORTED) {
794                 pr_info("Accelerometer not supported\n");
795                 return -ENODEV;
796         }
797 
798         return 0;
799 }
800 
801 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
802                                       u32 *xy, u32 *z)
803 {
804         u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
805         u32 out[TCI_WORDS];
806         acpi_status status;
807 
808         /* Check the Accelerometer status */
809         status = tci_raw(dev, in, out);
810         if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
811                 pr_err("ACPI call to query the accelerometer failed\n");
812                 return -EIO;
813         }
814 
815         *xy = out[2];
816         *z = out[4];
817 
818         return 0;
819 }
820 
821 /* Sleep (Charge and Music) utilities support */
822 static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
823                                         u32 *mode)
824 {
825         u32 result;
826 
827         if (!sci_open(dev))
828                 return -EIO;
829 
830         result = sci_read(dev, SCI_USB_SLEEP_CHARGE, mode);
831         sci_close(dev);
832         if (result == TOS_FAILURE) {
833                 pr_err("ACPI call to set USB S&C mode failed\n");
834                 return -EIO;
835         } else if (result == TOS_NOT_SUPPORTED) {
836                 pr_info("USB Sleep and Charge not supported\n");
837                 return -ENODEV;
838         } else if (result == TOS_INPUT_DATA_ERROR) {
839                 return -EIO;
840         }
841 
842         return 0;
843 }
844 
845 static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
846                                         u32 mode)
847 {
848         u32 result;
849 
850         if (!sci_open(dev))
851                 return -EIO;
852 
853         result = sci_write(dev, SCI_USB_SLEEP_CHARGE, mode);
854         sci_close(dev);
855         if (result == TOS_FAILURE) {
856                 pr_err("ACPI call to set USB S&C mode failed\n");
857                 return -EIO;
858         } else if (result == TOS_NOT_SUPPORTED) {
859                 pr_info("USB Sleep and Charge not supported\n");
860                 return -ENODEV;
861         } else if (result == TOS_INPUT_DATA_ERROR) {
862                 return -EIO;
863         }
864 
865         return 0;
866 }
867 
868 static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
869                                               u32 *mode)
870 {
871         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
872         u32 out[TCI_WORDS];
873         acpi_status status;
874 
875         if (!sci_open(dev))
876                 return -EIO;
877 
878         in[5] = SCI_USB_CHARGE_BAT_LVL;
879         status = tci_raw(dev, in, out);
880         sci_close(dev);
881         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
882                 pr_err("ACPI call to get USB S&C battery level failed\n");
883                 return -EIO;
884         } else if (out[0] == TOS_NOT_SUPPORTED) {
885                 pr_info("USB Sleep and Charge not supported\n");
886                 return -ENODEV;
887         } else if (out[0] == TOS_INPUT_DATA_ERROR) {
888                 return -EIO;
889         }
890 
891         *mode = out[2];
892 
893         return 0;
894 }
895 
896 static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
897                                               u32 mode)
898 {
899         u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
900         u32 out[TCI_WORDS];
901         acpi_status status;
902 
903         if (!sci_open(dev))
904                 return -EIO;
905 
906         in[2] = mode;
907         in[5] = SCI_USB_CHARGE_BAT_LVL;
908         status = tci_raw(dev, in, out);
909         sci_close(dev);
910         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
911                 pr_err("ACPI call to set USB S&C battery level failed\n");
912                 return -EIO;
913         } else if (out[0] == TOS_NOT_SUPPORTED) {
914                 pr_info("USB Sleep and Charge not supported\n");
915                 return -ENODEV;
916         } else if (out[0] == TOS_INPUT_DATA_ERROR) {
917                 return -EIO;
918         }
919 
920         return 0;
921 }
922 
923 static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
924                                         u32 *state)
925 {
926         u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
927         u32 out[TCI_WORDS];
928         acpi_status status;
929 
930         if (!sci_open(dev))
931                 return -EIO;
932 
933         in[5] = SCI_USB_CHARGE_RAPID_DSP;
934         status = tci_raw(dev, in, out);
935         sci_close(dev);
936         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
937                 pr_err("ACPI call to get USB S&C battery level failed\n");
938                 return -EIO;
939         } else if (out[0] == TOS_NOT_SUPPORTED ||
940                    out[0] == TOS_INPUT_DATA_ERROR) {
941                 pr_info("USB Sleep and Charge not supported\n");
942                 return -ENODEV;
943         }
944 
945         *state = out[2];
946 
947         return 0;
948 }
949 
950 static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
951                                         u32 state)
952 {
953         u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
954         u32 out[TCI_WORDS];
955         acpi_status status;
956 
957         if (!sci_open(dev))
958                 return -EIO;
959 
960         in[2] = state;
961         in[5] = SCI_USB_CHARGE_RAPID_DSP;
962         status = tci_raw(dev, in, out);
963         sci_close(dev);
964         if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
965                 pr_err("ACPI call to set USB S&C battery level failed\n");
966                 return -EIO;
967         } else if (out[0] == TOS_NOT_SUPPORTED) {
968                 pr_info("USB Sleep and Charge not supported\n");
969                 return -ENODEV;
970         } else if (out[0] == TOS_INPUT_DATA_ERROR) {
971                 return -EIO;
972         }
973 
974         return 0;
975 }
976 
977 static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
978 {
979         u32 result;
980 
981         if (!sci_open(dev))
982                 return -EIO;
983 
984         result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
985         sci_close(dev);
986         if (result == TOS_FAILURE) {
987                 pr_err("ACPI call to set USB S&C mode failed\n");
988                 return -EIO;
989         } else if (result == TOS_NOT_SUPPORTED) {
990                 pr_info("USB Sleep and Charge not supported\n");
991                 return -ENODEV;
992         } else if (result == TOS_INPUT_DATA_ERROR) {
993                 return -EIO;
994         }
995 
996         return 0;
997 }
998 
999 static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
1000 {
1001         u32 result;
1002 
1003         if (!sci_open(dev))
1004                 return -EIO;
1005 
1006         result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
1007         sci_close(dev);
1008         if (result == TOS_FAILURE) {
1009                 pr_err("ACPI call to set USB S&C mode failed\n");
1010                 return -EIO;
1011         } else if (result == TOS_NOT_SUPPORTED) {
1012                 pr_info("USB Sleep and Charge not supported\n");
1013                 return -ENODEV;
1014         } else if (result == TOS_INPUT_DATA_ERROR) {
1015                 return -EIO;
1016         }
1017 
1018         return 0;
1019 }
1020 
1021 /* Keyboard function keys */
1022 static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)
1023 {
1024         u32 result;
1025 
1026         if (!sci_open(dev))
1027                 return -EIO;
1028 
1029         result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);
1030         sci_close(dev);
1031         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
1032                 pr_err("ACPI call to get KBD function keys failed\n");
1033                 return -EIO;
1034         } else if (result == TOS_NOT_SUPPORTED) {
1035                 pr_info("KBD function keys not supported\n");
1036                 return -ENODEV;
1037         }
1038 
1039         return 0;
1040 }
1041 
1042 static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
1043 {
1044         u32 result;
1045 
1046         if (!sci_open(dev))
1047                 return -EIO;
1048 
1049         result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);
1050         sci_close(dev);
1051         if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
1052                 pr_err("ACPI call to set KBD function keys failed\n");
1053                 return -EIO;
1054         } else if (result == TOS_NOT_SUPPORTED) {
1055                 pr_info("KBD function keys not supported\n");
1056                 return -ENODEV;
1057         }
1058 
1059         return 0;
1060 }
1061 
1062 /* Panel Power ON */
1063 static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)
1064 {
1065         u32 result;
1066 
1067         if (!sci_open(dev))
1068                 return -EIO;
1069 
1070         result = sci_read(dev, SCI_PANEL_POWER_ON, state);
1071         sci_close(dev);
1072         if (result == TOS_FAILURE) {
1073                 pr_err("ACPI call to get Panel Power ON failed\n");
1074                 return -EIO;
1075         } else if (result == TOS_NOT_SUPPORTED) {
1076                 pr_info("Panel Power on not supported\n");
1077                 return -ENODEV;
1078         } else if (result == TOS_INPUT_DATA_ERROR) {
1079                 return -EIO;
1080         }
1081 
1082         return 0;
1083 }
1084 
1085 static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
1086 {
1087         u32 result;
1088 
1089         if (!sci_open(dev))
1090                 return -EIO;
1091 
1092         result = sci_write(dev, SCI_PANEL_POWER_ON, state);
1093         sci_close(dev);
1094         if (result == TOS_FAILURE) {
1095                 pr_err("ACPI call to set Panel Power ON failed\n");
1096                 return -EIO;
1097         } else if (result == TOS_NOT_SUPPORTED) {
1098                 pr_info("Panel Power ON not supported\n");
1099                 return -ENODEV;
1100         } else if (result == TOS_INPUT_DATA_ERROR) {
1101                 return -EIO;
1102         }
1103 
1104         return 0;
1105 }
1106 
1107 /* USB Three */
1108 static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state)
1109 {
1110         u32 result;
1111 
1112         if (!sci_open(dev))
1113                 return -EIO;
1114 
1115         result = sci_read(dev, SCI_USB_THREE, state);
1116         sci_close(dev);
1117         if (result == TOS_FAILURE) {
1118                 pr_err("ACPI call to get USB 3 failed\n");
1119                 return -EIO;
1120         } else if (result == TOS_NOT_SUPPORTED) {
1121                 pr_info("USB 3 not supported\n");
1122                 return -ENODEV;
1123         } else if (result == TOS_INPUT_DATA_ERROR) {
1124                 return -EIO;
1125         }
1126 
1127         return 0;
1128 }
1129 
1130 static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
1131 {
1132         u32 result;
1133 
1134         if (!sci_open(dev))
1135                 return -EIO;
1136 
1137         result = sci_write(dev, SCI_USB_THREE, state);
1138         sci_close(dev);
1139         if (result == TOS_FAILURE) {
1140                 pr_err("ACPI call to set USB 3 failed\n");
1141                 return -EIO;
1142         } else if (result == TOS_NOT_SUPPORTED) {
1143                 pr_info("USB 3 not supported\n");
1144                 return -ENODEV;
1145         } else if (result == TOS_INPUT_DATA_ERROR) {
1146                 return -EIO;
1147         }
1148 
1149         return 0;
1150 }
1151 
1152 /* Bluetooth rfkill handlers */
1153 
1154 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
1155 {
1156         u32 hci_result;
1157         u32 value, value2;
1158 
1159         value = 0;
1160         value2 = 0;
1161         hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
1162         if (hci_result == TOS_SUCCESS)
1163                 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
1164 
1165         return hci_result;
1166 }
1167 
1168 static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
1169 {
1170         u32 hci_result;
1171         u32 value, value2;
1172 
1173         value = 0;
1174         value2 = 0x0001;
1175         hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
1176 
1177         *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
1178         return hci_result;
1179 }
1180 
1181 static int bt_rfkill_set_block(void *data, bool blocked)
1182 {
1183         struct toshiba_acpi_dev *dev = data;
1184         u32 result1, result2;
1185         u32 value;
1186         int err;
1187         bool radio_state;
1188 
1189         value = (blocked == false);
1190 
1191         mutex_lock(&dev->mutex);
1192         if (hci_get_radio_state(dev, &radio_state) != TOS_SUCCESS) {
1193                 err = -EIO;
1194                 goto out;
1195         }
1196 
1197         if (!radio_state) {
1198                 err = 0;
1199                 goto out;
1200         }
1201 
1202         result1 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER);
1203         result2 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH);
1204 
1205         if (result1 != TOS_SUCCESS || result2 != TOS_SUCCESS)
1206                 err = -EIO;
1207         else
1208                 err = 0;
1209  out:
1210         mutex_unlock(&dev->mutex);
1211         return err;
1212 }
1213 
1214 static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
1215 {
1216         bool new_rfk_state;
1217         bool value;
1218         u32 hci_result;
1219         struct toshiba_acpi_dev *dev = data;
1220 
1221         mutex_lock(&dev->mutex);
1222 
1223         hci_result = hci_get_radio_state(dev, &value);
1224         if (hci_result != TOS_SUCCESS) {
1225                 /* Can't do anything useful */
1226                 mutex_unlock(&dev->mutex);
1227                 return;
1228         }
1229 
1230         new_rfk_state = value;
1231 
1232         mutex_unlock(&dev->mutex);
1233 
1234         if (rfkill_set_hw_state(rfkill, !new_rfk_state))
1235                 bt_rfkill_set_block(data, true);
1236 }
1237 
1238 static const struct rfkill_ops toshiba_rfk_ops = {
1239         .set_block = bt_rfkill_set_block,
1240         .poll = bt_rfkill_poll,
1241 };
1242 
1243 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
1244 {
1245         u32 hci_result;
1246         u32 status;
1247 
1248         hci_result = hci_read1(dev, HCI_TR_BACKLIGHT, &status);
1249         *enabled = !status;
1250         return hci_result == TOS_SUCCESS ? 0 : -EIO;
1251 }
1252 
1253 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
1254 {
1255         u32 hci_result;
1256         u32 value = !enable;
1257 
1258         hci_result = hci_write1(dev, HCI_TR_BACKLIGHT, value);
1259         return hci_result == TOS_SUCCESS ? 0 : -EIO;
1260 }
1261 
1262 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/;
1263 
1264 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
1265 {
1266         u32 hci_result;
1267         u32 value;
1268         int brightness = 0;
1269 
1270         if (dev->tr_backlight_supported) {
1271                 bool enabled;
1272                 int ret = get_tr_backlight_status(dev, &enabled);
1273 
1274                 if (ret)
1275                         return ret;
1276                 if (enabled)
1277                         return 0;
1278                 brightness++;
1279         }
1280 
1281         hci_result = hci_read1(dev, HCI_LCD_BRIGHTNESS, &value);
1282         if (hci_result == TOS_SUCCESS)
1283                 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
1284 
1285         return -EIO;
1286 }
1287 
1288 static int get_lcd_brightness(struct backlight_device *bd)
1289 {
1290         struct toshiba_acpi_dev *dev = bl_get_data(bd);
1291 
1292         return __get_lcd_brightness(dev);
1293 }
1294 
1295 static int lcd_proc_show(struct seq_file *m, void *v)
1296 {
1297         struct toshiba_acpi_dev *dev = m->private;
1298         int value;
1299         int levels;
1300 
1301         if (!dev->backlight_dev)
1302                 return -ENODEV;
1303 
1304         levels = dev->backlight_dev->props.max_brightness + 1;
1305         value = get_lcd_brightness(dev->backlight_dev);
1306         if (value >= 0) {
1307                 seq_printf(m, "brightness:              %d\n", value);
1308                 seq_printf(m, "brightness_levels:       %d\n", levels);
1309                 return 0;
1310         }
1311 
1312         pr_err("Error reading LCD brightness\n");
1313         return -EIO;
1314 }
1315 
1316 static int lcd_proc_open(struct inode *inode, struct file *file)
1317 {
1318         return single_open(file, lcd_proc_show, PDE_DATA(inode));
1319 }
1320 
1321 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
1322 {
1323         u32 hci_result;
1324 
1325         if (dev->tr_backlight_supported) {
1326                 bool enable = !value;
1327                 int ret = set_tr_backlight_status(dev, enable);
1328 
1329                 if (ret)
1330                         return ret;
1331                 if (value)
1332                         value--;
1333         }
1334 
1335         value = value << HCI_LCD_BRIGHTNESS_SHIFT;
1336         hci_result = hci_write1(dev, HCI_LCD_BRIGHTNESS, value);
1337         return hci_result == TOS_SUCCESS ? 0 : -EIO;
1338 }
1339 
1340 static int set_lcd_status(struct backlight_device *bd)
1341 {
1342         struct toshiba_acpi_dev *dev = bl_get_data(bd);
1343 
1344         return set_lcd_brightness(dev, bd->props.brightness);
1345 }
1346 
1347 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
1348                               size_t count, loff_t *pos)
1349 {
1350         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1351         char cmd[42];
1352         size_t len;
1353         int value;
1354         int ret;
1355         int levels = dev->backlight_dev->props.max_brightness + 1;
1356 
1357         len = min(count, sizeof(cmd) - 1);
1358         if (copy_from_user(cmd, buf, len))
1359                 return -EFAULT;
1360         cmd[len] = '\0';
1361 
1362         if (sscanf(cmd, " brightness : %i", &value) == 1 &&
1363             value >= 0 && value < levels) {
1364                 ret = set_lcd_brightness(dev, value);
1365                 if (ret == 0)
1366                         ret = count;
1367         } else {
1368                 ret = -EINVAL;
1369         }
1370         return ret;
1371 }
1372 
1373 static const struct file_operations lcd_proc_fops = {
1374         .owner          = THIS_MODULE,
1375         .open           = lcd_proc_open,
1376         .read           = seq_read,
1377         .llseek         = seq_lseek,
1378         .release        = single_release,
1379         .write          = lcd_proc_write,
1380 };
1381 
1382 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
1383 {
1384         u32 hci_result;
1385 
1386         hci_result = hci_read1(dev, HCI_VIDEO_OUT, status);
1387         return hci_result == TOS_SUCCESS ? 0 : -EIO;
1388 }
1389 
1390 static int video_proc_show(struct seq_file *m, void *v)
1391 {
1392         struct toshiba_acpi_dev *dev = m->private;
1393         u32 value;
1394         int ret;
1395 
1396         ret = get_video_status(dev, &value);
1397         if (!ret) {
1398                 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
1399                 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
1400                 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
1401 
1402                 seq_printf(m, "lcd_out:                 %d\n", is_lcd);
1403                 seq_printf(m, "crt_out:                 %d\n", is_crt);
1404                 seq_printf(m, "tv_out:                  %d\n", is_tv);
1405         }
1406 
1407         return ret;
1408 }
1409 
1410 static int video_proc_open(struct inode *inode, struct file *file)
1411 {
1412         return single_open(file, video_proc_show, PDE_DATA(inode));
1413 }
1414 
1415 static ssize_t video_proc_write(struct file *file, const char __user *buf,
1416                                 size_t count, loff_t *pos)
1417 {
1418         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1419         char *cmd, *buffer;
1420         int ret;
1421         int value;
1422         int remain = count;
1423         int lcd_out = -1;
1424         int crt_out = -1;
1425         int tv_out = -1;
1426         u32 video_out;
1427 
1428         cmd = kmalloc(count + 1, GFP_KERNEL);
1429         if (!cmd)
1430                 return -ENOMEM;
1431         if (copy_from_user(cmd, buf, count)) {
1432                 kfree(cmd);
1433                 return -EFAULT;
1434         }
1435         cmd[count] = '\0';
1436 
1437         buffer = cmd;
1438 
1439         /*
1440          * Scan expression.  Multiple expressions may be delimited with ;
1441          * NOTE: To keep scanning simple, invalid fields are ignored.
1442          */
1443         while (remain) {
1444                 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
1445                         lcd_out = value & 1;
1446                 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
1447                         crt_out = value & 1;
1448                 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
1449                         tv_out = value & 1;
1450                 /* Advance to one character past the next ; */
1451                 do {
1452                         ++buffer;
1453                         --remain;
1454                 } while (remain && *(buffer - 1) != ';');
1455         }
1456 
1457         kfree(cmd);
1458 
1459         ret = get_video_status(dev, &video_out);
1460         if (!ret) {
1461                 unsigned int new_video_out = video_out;
1462 
1463                 if (lcd_out != -1)
1464                         _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
1465                 if (crt_out != -1)
1466                         _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
1467                 if (tv_out != -1)
1468                         _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
1469                 /*
1470                  * To avoid unnecessary video disruption, only write the new
1471                  * video setting if something changed. */
1472                 if (new_video_out != video_out)
1473                         ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
1474         }
1475 
1476         return ret ? ret : count;
1477 }
1478 
1479 static const struct file_operations video_proc_fops = {
1480         .owner          = THIS_MODULE,
1481         .open           = video_proc_open,
1482         .read           = seq_read,
1483         .llseek         = seq_lseek,
1484         .release        = single_release,
1485         .write          = video_proc_write,
1486 };
1487 
1488 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1489 {
1490         u32 hci_result;
1491 
1492         hci_result = hci_read1(dev, HCI_FAN, status);
1493         return hci_result == TOS_SUCCESS ? 0 : -EIO;
1494 }
1495 
1496 static int fan_proc_show(struct seq_file *m, void *v)
1497 {
1498         struct toshiba_acpi_dev *dev = m->private;
1499         int ret;
1500         u32 value;
1501 
1502         ret = get_fan_status(dev, &value);
1503         if (!ret) {
1504                 seq_printf(m, "running:                 %d\n", (value > 0));
1505                 seq_printf(m, "force_on:                %d\n", dev->force_fan);
1506         }
1507 
1508         return ret;
1509 }
1510 
1511 static int fan_proc_open(struct inode *inode, struct file *file)
1512 {
1513         return single_open(file, fan_proc_show, PDE_DATA(inode));
1514 }
1515 
1516 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1517                               size_t count, loff_t *pos)
1518 {
1519         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1520         char cmd[42];
1521         size_t len;
1522         int value;
1523         u32 hci_result;
1524 
1525         len = min(count, sizeof(cmd) - 1);
1526         if (copy_from_user(cmd, buf, len))
1527                 return -EFAULT;
1528         cmd[len] = '\0';
1529 
1530         if (sscanf(cmd, " force_on : %i", &value) == 1 &&
1531             value >= 0 && value <= 1) {
1532                 hci_result = hci_write1(dev, HCI_FAN, value);
1533                 if (hci_result == TOS_SUCCESS)
1534                         dev->force_fan = value;
1535                 else
1536                         return -EIO;
1537         } else {
1538                 return -EINVAL;
1539         }
1540 
1541         return count;
1542 }
1543 
1544 static const struct file_operations fan_proc_fops = {
1545         .owner          = THIS_MODULE,
1546         .open           = fan_proc_open,
1547         .read           = seq_read,
1548         .llseek         = seq_lseek,
1549         .release        = single_release,
1550         .write          = fan_proc_write,
1551 };
1552 
1553 static int keys_proc_show(struct seq_file *m, void *v)
1554 {
1555         struct toshiba_acpi_dev *dev = m->private;
1556         u32 hci_result;
1557         u32 value;
1558 
1559         if (!dev->key_event_valid && dev->system_event_supported) {
1560                 hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
1561                 if (hci_result == TOS_SUCCESS) {
1562                         dev->key_event_valid = 1;
1563                         dev->last_key_event = value;
1564                 } else if (hci_result == TOS_FIFO_EMPTY) {
1565                         /* Better luck next time */
1566                 } else if (hci_result == TOS_NOT_SUPPORTED) {
1567                         /*
1568                          * This is a workaround for an unresolved issue on
1569                          * some machines where system events sporadically
1570                          * become disabled.
1571                          */
1572                         hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
1573                         pr_notice("Re-enabled hotkeys\n");
1574                 } else {
1575                         pr_err("Error reading hotkey status\n");
1576                         return -EIO;
1577                 }
1578         }
1579 
1580         seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
1581         seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
1582         return 0;
1583 }
1584 
1585 static int keys_proc_open(struct inode *inode, struct file *file)
1586 {
1587         return single_open(file, keys_proc_show, PDE_DATA(inode));
1588 }
1589 
1590 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1591                                size_t count, loff_t *pos)
1592 {
1593         struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1594         char cmd[42];
1595         size_t len;
1596         int value;
1597 
1598         len = min(count, sizeof(cmd) - 1);
1599         if (copy_from_user(cmd, buf, len))
1600                 return -EFAULT;
1601         cmd[len] = '\0';
1602 
1603         if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0)
1604                 dev->key_event_valid = 0;
1605         else
1606                 return -EINVAL;
1607 
1608         return count;
1609 }
1610 
1611 static const struct file_operations keys_proc_fops = {
1612         .owner          = THIS_MODULE,
1613         .open           = keys_proc_open,
1614         .read           = seq_read,
1615         .llseek         = seq_lseek,
1616         .release        = single_release,
1617         .write          = keys_proc_write,
1618 };
1619 
1620 static int version_proc_show(struct seq_file *m, void *v)
1621 {
1622         seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
1623         seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);
1624         return 0;
1625 }
1626 
1627 static int version_proc_open(struct inode *inode, struct file *file)
1628 {
1629         return single_open(file, version_proc_show, PDE_DATA(inode));
1630 }
1631 
1632 static const struct file_operations version_proc_fops = {
1633         .owner          = THIS_MODULE,
1634         .open           = version_proc_open,
1635         .read           = seq_read,
1636         .llseek         = seq_lseek,
1637         .release        = single_release,
1638 };
1639 
1640 /*
1641  * Proc and module init
1642  */
1643 
1644 #define PROC_TOSHIBA            "toshiba"
1645 
1646 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1647 {
1648         if (dev->backlight_dev)
1649                 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1650                                  &lcd_proc_fops, dev);
1651         if (dev->video_supported)
1652                 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1653                                  &video_proc_fops, dev);
1654         if (dev->fan_supported)
1655                 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1656                                  &fan_proc_fops, dev);
1657         if (dev->hotkey_dev)
1658                 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1659                                  &keys_proc_fops, dev);
1660         proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1661                          &version_proc_fops, dev);
1662 }
1663 
1664 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1665 {
1666         if (dev->backlight_dev)
1667                 remove_proc_entry("lcd", toshiba_proc_dir);
1668         if (dev->video_supported)
1669                 remove_proc_entry("video", toshiba_proc_dir);
1670         if (dev->fan_supported)
1671                 remove_proc_entry("fan", toshiba_proc_dir);
1672         if (dev->hotkey_dev)
1673                 remove_proc_entry("keys", toshiba_proc_dir);
1674         remove_proc_entry("version", toshiba_proc_dir);
1675 }
1676 
1677 static const struct backlight_ops toshiba_backlight_data = {
1678         .options = BL_CORE_SUSPENDRESUME,
1679         .get_brightness = get_lcd_brightness,
1680         .update_status  = set_lcd_status,
1681 };
1682 
1683 /*
1684  * Sysfs files
1685  */
1686 static ssize_t version_show(struct device *dev,
1687                             struct device_attribute *attr, char *buf)
1688 {
1689         return sprintf(buf, "%s\n", TOSHIBA_ACPI_VERSION);
1690 }
1691 static DEVICE_ATTR_RO(version);
1692 
1693 static ssize_t fan_store(struct device *dev,
1694                          struct device_attribute *attr,
1695                          const char *buf, size_t count)
1696 {
1697         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1698         u32 result;
1699         int state;
1700         int ret;
1701 
1702         ret = kstrtoint(buf, 0, &state);
1703         if (ret)
1704                 return ret;
1705 
1706         if (state != 0 && state != 1)
1707                 return -EINVAL;
1708 
1709         result = hci_write1(toshiba, HCI_FAN, state);
1710         if (result == TOS_FAILURE)
1711                 return -EIO;
1712         else if (result == TOS_NOT_SUPPORTED)
1713                 return -ENODEV;
1714 
1715         return count;
1716 }
1717 
1718 static ssize_t fan_show(struct device *dev,
1719                         struct device_attribute *attr, char *buf)
1720 {
1721         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1722         u32 value;
1723         int ret;
1724 
1725         ret = get_fan_status(toshiba, &value);
1726         if (ret)
1727                 return ret;
1728 
1729         return sprintf(buf, "%d\n", value);
1730 }
1731 static DEVICE_ATTR_RW(fan);
1732 
1733 static ssize_t kbd_backlight_mode_store(struct device *dev,
1734                                         struct device_attribute *attr,
1735                                         const char *buf, size_t count)
1736 {
1737         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1738         int mode;
1739         int time;
1740         int ret;
1741 
1742 
1743         ret = kstrtoint(buf, 0, &mode);
1744         if (ret)
1745                 return ret;
1746 
1747         /* Check for supported modes depending on keyboard backlight type */
1748         if (toshiba->kbd_type == 1) {
1749                 /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */
1750                 if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO)
1751                         return -EINVAL;
1752         } else if (toshiba->kbd_type == 2) {
1753                 /* Type 2 doesn't support SCI_KBD_MODE_FNZ */
1754                 if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON &&
1755                     mode != SCI_KBD_MODE_OFF)
1756                         return -EINVAL;
1757         }
1758 
1759         /*
1760          * Set the Keyboard Backlight Mode where:
1761          *      Auto - KBD backlight turns off automatically in given time
1762          *      FN-Z - KBD backlight "toggles" when hotkey pressed
1763          *      ON   - KBD backlight is always on
1764          *      OFF  - KBD backlight is always off
1765          */
1766 
1767         /* Only make a change if the actual mode has changed */
1768         if (toshiba->kbd_mode != mode) {
1769                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1770                 time = toshiba->kbd_time << HCI_MISC_SHIFT;
1771 
1772                 /* OR the "base time" to the actual method format */
1773                 if (toshiba->kbd_type == 1) {
1774                         /* Type 1 requires the current mode */
1775                         time |= toshiba->kbd_mode;
1776                 } else if (toshiba->kbd_type == 2) {
1777                         /* Type 2 requires the desired mode */
1778                         time |= mode;
1779                 }
1780 
1781                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1782                 if (ret)
1783                         return ret;
1784 
1785                 toshiba->kbd_mode = mode;
1786         }
1787 
1788         return count;
1789 }
1790 
1791 static ssize_t kbd_backlight_mode_show(struct device *dev,
1792                                        struct device_attribute *attr,
1793                                        char *buf)
1794 {
1795         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1796         u32 time;
1797 
1798         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1799                 return -EIO;
1800 
1801         return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK);
1802 }
1803 static DEVICE_ATTR_RW(kbd_backlight_mode);
1804 
1805 static ssize_t kbd_type_show(struct device *dev,
1806                              struct device_attribute *attr, char *buf)
1807 {
1808         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1809 
1810         return sprintf(buf, "%d\n", toshiba->kbd_type);
1811 }
1812 static DEVICE_ATTR_RO(kbd_type);
1813 
1814 static ssize_t available_kbd_modes_show(struct device *dev,
1815                                         struct device_attribute *attr,
1816                                         char *buf)
1817 {
1818         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1819 
1820         if (toshiba->kbd_type == 1)
1821                 return sprintf(buf, "%x %x\n",
1822                                SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
1823 
1824         return sprintf(buf, "%x %x %x\n",
1825                        SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF);
1826 }
1827 static DEVICE_ATTR_RO(available_kbd_modes);
1828 
1829 static ssize_t kbd_backlight_timeout_store(struct device *dev,
1830                                            struct device_attribute *attr,
1831                                            const char *buf, size_t count)
1832 {
1833         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1834         int time;
1835         int ret;
1836 
1837         ret = kstrtoint(buf, 0, &time);
1838         if (ret)
1839                 return ret;
1840 
1841         /* Check for supported values depending on kbd_type */
1842         if (toshiba->kbd_type == 1) {
1843                 if (time < 0 || time > 60)
1844                         return -EINVAL;
1845         } else if (toshiba->kbd_type == 2) {
1846                 if (time < 1 || time > 60)
1847                         return -EINVAL;
1848         }
1849 
1850         /* Set the Keyboard Backlight Timeout */
1851 
1852         /* Only make a change if the actual timeout has changed */
1853         if (toshiba->kbd_time != time) {
1854                 /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
1855                 time = time << HCI_MISC_SHIFT;
1856                 /* OR the "base time" to the actual method format */
1857                 if (toshiba->kbd_type == 1)
1858                         time |= SCI_KBD_MODE_FNZ;
1859                 else if (toshiba->kbd_type == 2)
1860                         time |= SCI_KBD_MODE_AUTO;
1861 
1862                 ret = toshiba_kbd_illum_status_set(toshiba, time);
1863                 if (ret)
1864                         return ret;
1865 
1866                 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1867         }
1868 
1869         return count;
1870 }
1871 
1872 static ssize_t kbd_backlight_timeout_show(struct device *dev,
1873                                           struct device_attribute *attr,
1874                                           char *buf)
1875 {
1876         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1877         u32 time;
1878 
1879         if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1880                 return -EIO;
1881 
1882         return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1883 }
1884 static DEVICE_ATTR_RW(kbd_backlight_timeout);
1885 
1886 static ssize_t touchpad_store(struct device *dev,
1887                               struct device_attribute *attr,
1888                               const char *buf, size_t count)
1889 {
1890         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1891         int state;
1892         int ret;
1893 
1894         /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1895         ret = kstrtoint(buf, 0, &state);
1896         if (ret)
1897                 return ret;
1898         if (state != 0 && state != 1)
1899                 return -EINVAL;
1900 
1901         ret = toshiba_touchpad_set(toshiba, state);
1902         if (ret)
1903                 return ret;
1904 
1905         return count;
1906 }
1907 
1908 static ssize_t touchpad_show(struct device *dev,
1909                              struct device_attribute *attr, char *buf)
1910 {
1911         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1912         u32 state;
1913         int ret;
1914 
1915         ret = toshiba_touchpad_get(toshiba, &state);
1916         if (ret < 0)
1917                 return ret;
1918 
1919         return sprintf(buf, "%i\n", state);
1920 }
1921 static DEVICE_ATTR_RW(touchpad);
1922 
1923 static ssize_t position_show(struct device *dev,
1924                              struct device_attribute *attr, char *buf)
1925 {
1926         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1927         u32 xyval, zval, tmp;
1928         u16 x, y, z;
1929         int ret;
1930 
1931         xyval = zval = 0;
1932         ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
1933         if (ret < 0)
1934                 return ret;
1935 
1936         x = xyval & HCI_ACCEL_MASK;
1937         tmp = xyval >> HCI_MISC_SHIFT;
1938         y = tmp & HCI_ACCEL_MASK;
1939         z = zval & HCI_ACCEL_MASK;
1940 
1941         return sprintf(buf, "%d %d %d\n", x, y, z);
1942 }
1943 static DEVICE_ATTR_RO(position);
1944 
1945 static ssize_t usb_sleep_charge_show(struct device *dev,
1946                                      struct device_attribute *attr, char *buf)
1947 {
1948         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1949         u32 mode;
1950         int ret;
1951 
1952         ret = toshiba_usb_sleep_charge_get(toshiba, &mode);
1953         if (ret < 0)
1954                 return ret;
1955 
1956         return sprintf(buf, "%x\n", mode & SCI_USB_CHARGE_MODE_MASK);
1957 }
1958 
1959 static ssize_t usb_sleep_charge_store(struct device *dev,
1960                                       struct device_attribute *attr,
1961                                       const char *buf, size_t count)
1962 {
1963         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1964         u32 mode;
1965         int state;
1966         int ret;
1967 
1968         ret = kstrtoint(buf, 0, &state);
1969         if (ret)
1970                 return ret;
1971         /*
1972          * Check for supported values, where:
1973          * 0 - Disabled
1974          * 1 - Alternate (Non USB conformant devices that require more power)
1975          * 2 - Auto (USB conformant devices)
1976          */
1977         if (state != 0 && state != 1 && state != 2)
1978                 return -EINVAL;
1979 
1980         /* Set the USB charging mode to internal value */
1981         if (state == 0)
1982                 mode = SCI_USB_CHARGE_DISABLED;
1983         else if (state == 1)
1984                 mode = SCI_USB_CHARGE_ALTERNATE;
1985         else if (state == 2)
1986                 mode = SCI_USB_CHARGE_AUTO;
1987 
1988         ret = toshiba_usb_sleep_charge_set(toshiba, mode);
1989         if (ret)
1990                 return ret;
1991 
1992         return count;
1993 }
1994 static DEVICE_ATTR_RW(usb_sleep_charge);
1995 
1996 static ssize_t sleep_functions_on_battery_show(struct device *dev,
1997                                                struct device_attribute *attr,
1998                                                char *buf)
1999 {
2000         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2001         u32 state;
2002         int bat_lvl;
2003         int status;
2004         int ret;
2005         int tmp;
2006 
2007         ret = toshiba_sleep_functions_status_get(toshiba, &state);
2008         if (ret < 0)
2009                 return ret;
2010 
2011         /* Determine the status: 0x4 - Enabled | 0x1 - Disabled */
2012         tmp = state & SCI_USB_CHARGE_BAT_MASK;
2013         status = (tmp == 0x4) ? 1 : 0;
2014         /* Determine the battery level set */
2015         bat_lvl = state >> HCI_MISC_SHIFT;
2016 
2017         return sprintf(buf, "%d %d\n", status, bat_lvl);
2018 }
2019 
2020 static ssize_t sleep_functions_on_battery_store(struct device *dev,
2021                                                 struct device_attribute *attr,
2022                                                 const char *buf, size_t count)
2023 {
2024         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2025         u32 status;
2026         int value;
2027         int ret;
2028         int tmp;
2029 
2030         ret = kstrtoint(buf, 0, &value);
2031         if (ret)
2032                 return ret;
2033 
2034         /*
2035          * Set the status of the function:
2036          * 0 - Disabled
2037          * 1-100 - Enabled
2038          */
2039         if (value < 0 || value > 100)
2040                 return -EINVAL;
2041 
2042         if (value == 0) {
2043                 tmp = toshiba->usbsc_bat_level << HCI_MISC_SHIFT;
2044                 status = tmp | SCI_USB_CHARGE_BAT_LVL_OFF;
2045         } else {
2046                 tmp = value << HCI_MISC_SHIFT;
2047                 status = tmp | SCI_USB_CHARGE_BAT_LVL_ON;
2048         }
2049         ret = toshiba_sleep_functions_status_set(toshiba, status);
2050         if (ret < 0)
2051                 return ret;
2052 
2053         toshiba->usbsc_bat_level = status >> HCI_MISC_SHIFT;
2054 
2055         return count;
2056 }
2057 static DEVICE_ATTR_RW(sleep_functions_on_battery);
2058 
2059 static ssize_t usb_rapid_charge_show(struct device *dev,
2060                                      struct device_attribute *attr, char *buf)
2061 {
2062         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2063         u32 state;
2064         int ret;
2065 
2066         ret = toshiba_usb_rapid_charge_get(toshiba, &state);
2067         if (ret < 0)
2068                 return ret;
2069 
2070         return sprintf(buf, "%d\n", state);
2071 }
2072 
2073 static ssize_t usb_rapid_charge_store(struct device *dev,
2074                                       struct device_attribute *attr,
2075                                       const char *buf, size_t count)
2076 {
2077         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2078         int state;
2079         int ret;
2080 
2081         ret = kstrtoint(buf, 0, &state);
2082         if (ret)
2083                 return ret;
2084         if (state != 0 && state != 1)
2085                 return -EINVAL;
2086 
2087         ret = toshiba_usb_rapid_charge_set(toshiba, state);
2088         if (ret)
2089                 return ret;
2090 
2091         return count;
2092 }
2093 static DEVICE_ATTR_RW(usb_rapid_charge);
2094 
2095 static ssize_t usb_sleep_music_show(struct device *dev,
2096                                     struct device_attribute *attr, char *buf)
2097 {
2098         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2099         u32 state;
2100         int ret;
2101 
2102         ret = toshiba_usb_sleep_music_get(toshiba, &state);
2103         if (ret < 0)
2104                 return ret;
2105 
2106         return sprintf(buf, "%d\n", state);
2107 }
2108 
2109 static ssize_t usb_sleep_music_store(struct device *dev,
2110                                      struct device_attribute *attr,
2111                                      const char *buf, size_t count)
2112 {
2113         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2114         int state;
2115         int ret;
2116 
2117         ret = kstrtoint(buf, 0, &state);
2118         if (ret)
2119                 return ret;
2120         if (state != 0 && state != 1)
2121                 return -EINVAL;
2122 
2123         ret = toshiba_usb_sleep_music_set(toshiba, state);
2124         if (ret)
2125                 return ret;
2126 
2127         return count;
2128 }
2129 static DEVICE_ATTR_RW(usb_sleep_music);
2130 
2131 static ssize_t kbd_function_keys_show(struct device *dev,
2132                                       struct device_attribute *attr, char *buf)
2133 {
2134         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2135         int mode;
2136         int ret;
2137 
2138         ret = toshiba_function_keys_get(toshiba, &mode);
2139         if (ret < 0)
2140                 return ret;
2141 
2142         return sprintf(buf, "%d\n", mode);
2143 }
2144 
2145 static ssize_t kbd_function_keys_store(struct device *dev,
2146                                        struct device_attribute *attr,
2147                                        const char *buf, size_t count)
2148 {
2149         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2150         int mode;
2151         int ret;
2152 
2153         ret = kstrtoint(buf, 0, &mode);
2154         if (ret)
2155                 return ret;
2156         /*
2157          * Check for the function keys mode where:
2158          * 0 - Normal operation (F{1-12} as usual and hotkeys via FN-F{1-12})
2159          * 1 - Special functions (Opposite of the above setting)
2160          */
2161         if (mode != 0 && mode != 1)
2162                 return -EINVAL;
2163 
2164         ret = toshiba_function_keys_set(toshiba, mode);
2165         if (ret)
2166                 return ret;
2167 
2168         pr_info("Reboot for changes to KBD Function Keys to take effect");
2169 
2170         return count;
2171 }
2172 static DEVICE_ATTR_RW(kbd_function_keys);
2173 
2174 static ssize_t panel_power_on_show(struct device *dev,
2175                                    struct device_attribute *attr, char *buf)
2176 {
2177         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2178         u32 state;
2179         int ret;
2180 
2181         ret = toshiba_panel_power_on_get(toshiba, &state);
2182         if (ret < 0)
2183                 return ret;
2184 
2185         return sprintf(buf, "%d\n", state);
2186 }
2187 
2188 static ssize_t panel_power_on_store(struct device *dev,
2189                                     struct device_attribute *attr,
2190                                     const char *buf, size_t count)
2191 {
2192         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2193         int state;
2194         int ret;
2195 
2196         ret = kstrtoint(buf, 0, &state);
2197         if (ret)
2198                 return ret;
2199         if (state != 0 && state != 1)
2200                 return -EINVAL;
2201 
2202         ret = toshiba_panel_power_on_set(toshiba, state);
2203         if (ret)
2204                 return ret;
2205 
2206         pr_info("Reboot for changes to Panel Power ON to take effect");
2207 
2208         return count;
2209 }
2210 static DEVICE_ATTR_RW(panel_power_on);
2211 
2212 static ssize_t usb_three_show(struct device *dev,
2213                               struct device_attribute *attr, char *buf)
2214 {
2215         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2216         u32 state;
2217         int ret;
2218 
2219         ret = toshiba_usb_three_get(toshiba, &state);
2220         if (ret < 0)
2221                 return ret;
2222 
2223         return sprintf(buf, "%d\n", state);
2224 }
2225 
2226 static ssize_t usb_three_store(struct device *dev,
2227                                struct device_attribute *attr,
2228                                const char *buf, size_t count)
2229 {
2230         struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
2231         int state;
2232         int ret;
2233 
2234         ret = kstrtoint(buf, 0, &state);
2235         if (ret)
2236                 return ret;
2237         /*
2238          * Check for USB 3 mode where:
2239          * 0 - Disabled (Acts like a USB 2 port, saving power)
2240          * 1 - Enabled
2241          */
2242         if (state != 0 && state != 1)
2243                 return -EINVAL;
2244 
2245         ret = toshiba_usb_three_set(toshiba, state);
2246         if (ret)
2247                 return ret;
2248 
2249         pr_info("Reboot for changes to USB 3 to take effect");
2250 
2251         return count;
2252 }
2253 static DEVICE_ATTR_RW(usb_three);
2254 
2255 static struct attribute *toshiba_attributes[] = {
2256         &dev_attr_version.attr,
2257         &dev_attr_fan.attr,
2258         &dev_attr_kbd_backlight_mode.attr,
2259         &dev_attr_kbd_type.attr,
2260         &dev_attr_available_kbd_modes.attr,
2261         &dev_attr_kbd_backlight_timeout.attr,
2262         &dev_attr_touchpad.attr,
2263         &dev_attr_position.attr,
2264         &dev_attr_usb_sleep_charge.attr,
2265         &dev_attr_sleep_functions_on_battery.attr,
2266         &dev_attr_usb_rapid_charge.attr,
2267         &dev_attr_usb_sleep_music.attr,
2268         &dev_attr_kbd_function_keys.attr,
2269         &dev_attr_panel_power_on.attr,
2270         &dev_attr_usb_three.attr,
2271         NULL,
2272 };
2273 
2274 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
2275                                         struct attribute *attr, int idx)
2276 {
2277         struct device *dev = container_of(kobj, struct device, kobj);
2278         struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
2279         bool exists = true;
2280 
2281         if (attr == &dev_attr_fan.attr)
2282                 exists = (drv->fan_supported) ? true : false;
2283         else if (attr == &dev_attr_kbd_backlight_mode.attr)
2284                 exists = (drv->kbd_illum_supported) ? true : false;
2285         else if (attr == &dev_attr_kbd_backlight_timeout.attr)
2286                 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
2287         else if (attr == &dev_attr_touchpad.attr)
2288                 exists = (drv->touchpad_supported) ? true : false;
2289         else if (attr == &dev_attr_position.attr)
2290                 exists = (drv->accelerometer_supported) ? true : false;
2291         else if (attr == &dev_attr_usb_sleep_charge.attr)
2292                 exists = (drv->usb_sleep_charge_supported) ? true : false;
2293         else if (attr == &dev_attr_sleep_functions_on_battery.attr)
2294                 exists = (drv->usb_sleep_charge_supported) ? true : false;
2295         else if (attr == &dev_attr_usb_rapid_charge.attr)
2296                 exists = (drv->usb_rapid_charge_supported) ? true : false;
2297         else if (attr == &dev_attr_usb_sleep_music.attr)
2298                 exists = (drv->usb_sleep_music_supported) ? true : false;
2299         else if (attr == &dev_attr_kbd_function_keys.attr)
2300                 exists = (drv->kbd_function_keys_supported) ? true : false;
2301         else if (attr == &dev_attr_panel_power_on.attr)
2302                 exists = (drv->panel_power_on_supported) ? true : false;
2303         else if (attr == &dev_attr_usb_three.attr)
2304                 exists = (drv->usb_three_supported) ? true : false;
2305 
2306         return exists ? attr->mode : 0;
2307 }
2308 
2309 static struct attribute_group toshiba_attr_group = {
2310         .is_visible = toshiba_sysfs_is_visible,
2311         .attrs = toshiba_attributes,
2312 };
2313 
2314 /*
2315  * Hotkeys
2316  */
2317 static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
2318 {
2319         acpi_status status;
2320         u32 result;
2321 
2322         status = acpi_evaluate_object(dev->acpi_dev->handle,
2323                                       "ENAB", NULL, NULL);
2324         if (ACPI_FAILURE(status))
2325                 return -ENODEV;
2326 
2327         result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
2328         if (result == TOS_FAILURE)
2329                 return -EIO;
2330         else if (result == TOS_NOT_SUPPORTED)
2331                 return -ENODEV;
2332 
2333         return 0;
2334 }
2335 
2336 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
2337                                       struct serio *port)
2338 {
2339         if (str & I8042_STR_AUXDATA)
2340                 return false;
2341 
2342         if (unlikely(data == 0xe0))
2343                 return false;
2344 
2345         if ((data & 0x7f) == TOS1900_FN_SCAN) {
2346                 schedule_work(&toshiba_acpi->hotkey_work);
2347                 return true;
2348         }
2349 
2350         return false;
2351 }
2352 
2353 static void toshiba_acpi_hotkey_work(struct work_struct *work)
2354 {
2355         acpi_handle ec_handle = ec_get_handle();
2356         acpi_status status;
2357 
2358         if (!ec_handle)
2359                 return;
2360 
2361         status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
2362         if (ACPI_FAILURE(status))
2363                 pr_err("ACPI NTFY method execution failed\n");
2364 }
2365 
2366 /*
2367  * Returns hotkey scancode, or < 0 on failure.
2368  */
2369 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
2370 {
2371         unsigned long long value;
2372         acpi_status status;
2373 
2374         status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
2375                                       NULL, &value);
2376         if (ACPI_FAILURE(status)) {
2377                 pr_err("ACPI INFO method execution failed\n");
2378                 return -EIO;
2379         }
2380 
2381         return value;
2382 }
2383 
2384 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
2385                                        int scancode)
2386 {
2387         if (scancode == 0x100)
2388                 return;
2389 
2390         /* Act on key press; ignore key release */
2391         if (scancode & 0x80)
2392                 return;
2393 
2394         if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
2395                 pr_info("Unknown key %x\n", scancode);
2396 }
2397 
2398 static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
2399 {
2400         u32 hci_result, value;
2401         int retries = 3;
2402         int scancode;
2403 
2404         if (dev->info_supported) {
2405                 scancode = toshiba_acpi_query_hotkey(dev);
2406                 if (scancode < 0)
2407                         pr_err("Failed to query hotkey event\n");
2408                 else if (scancode != 0)
2409                         toshiba_acpi_report_hotkey(dev, scancode);
2410         } else if (dev->system_event_supported) {
2411                 do {
2412                         hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
2413                         switch (hci_result) {
2414                         case TOS_SUCCESS:
2415                                 toshiba_acpi_report_hotkey(dev, (int)value);
2416                                 break;
2417                         case TOS_NOT_SUPPORTED:
2418                                 /*
2419                                  * This is a workaround for an unresolved
2420                                  * issue on some machines where system events
2421                                  * sporadically become disabled.
2422                                  */
2423                                 hci_result =
2424                                         hci_write1(dev, HCI_SYSTEM_EVENT, 1);
2425                                 pr_notice("Re-enabled hotkeys\n");
2426                                 /* Fall through */
2427                         default:
2428                                 retries--;
2429                                 break;
2430                         }
2431                 } while (retries && hci_result != TOS_FIFO_EMPTY);
2432         }
2433 }
2434 
2435 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
2436 {
2437         acpi_handle ec_handle;
2438         int error;
2439         u32 hci_result;
2440         const struct key_entry *keymap = toshiba_acpi_keymap;
2441 
2442         dev->hotkey_dev = input_allocate_device();
2443         if (!dev->hotkey_dev)
2444                 return -ENOMEM;
2445 
2446         dev->hotkey_dev->name = "Toshiba input device";
2447         dev->hotkey_dev->phys = "toshiba_acpi/input0";
2448         dev->hotkey_dev->id.bustype = BUS_HOST;
2449 
2450         if (dmi_check_system(toshiba_alt_keymap_dmi))
2451                 keymap = toshiba_acpi_alt_keymap;
2452         error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
2453         if (error)
2454                 goto err_free_dev;
2455 
2456         /*
2457          * For some machines the SCI responsible for providing hotkey
2458          * notification doesn't fire. We can trigger the notification
2459          * whenever the Fn key is pressed using the NTFY method, if
2460          * supported, so if it's present set up an i8042 key filter
2461          * for this purpose.
2462          */
2463         ec_handle = ec_get_handle();
2464         if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
2465                 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
2466 
2467                 error = i8042_install_filter(toshiba_acpi_i8042_filter);
2468                 if (error) {
2469                         pr_err("Error installing key filter\n");
2470                         goto err_free_keymap;
2471                 }
2472 
2473                 dev->ntfy_supported = 1;
2474         }
2475 
2476         /*
2477          * Determine hotkey query interface. Prefer using the INFO
2478          * method when it is available.
2479          */
2480         if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
2481                 dev->info_supported = 1;
2482         else {
2483                 hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
2484                 if (hci_result == TOS_SUCCESS)
2485                         dev->system_event_supported = 1;
2486         }
2487 
2488         if (!dev->info_supported && !dev->system_event_supported) {
2489                 pr_warn("No hotkey query interface found\n");
2490                 goto err_remove_filter;
2491         }
2492 
2493         error = toshiba_acpi_enable_hotkeys(dev);
2494         if (error) {
2495                 pr_info("Unable to enable hotkeys\n");
2496                 goto err_remove_filter;
2497         }
2498 
2499         error = input_register_device(dev->hotkey_dev);
2500         if (error) {
2501                 pr_info("Unable to register input device\n");
2502                 goto err_remove_filter;
2503         }
2504 
2505         return 0;
2506 
2507  err_remove_filter:
2508         if (dev->ntfy_supported)
2509                 i8042_remove_filter(toshiba_acpi_i8042_filter);
2510  err_free_keymap:
2511         sparse_keymap_free(dev->hotkey_dev);
2512  err_free_dev:
2513         input_free_device(dev->hotkey_dev);
2514         dev->hotkey_dev = NULL;
2515         return error;
2516 }
2517 
2518 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
2519 {
2520         struct backlight_properties props;
2521         int brightness;
2522         int ret;
2523         bool enabled;
2524 
2525         /*
2526          * Some machines don't support the backlight methods at all, and
2527          * others support it read-only. Either of these is pretty useless,
2528          * so only register the backlight device if the backlight method
2529          * supports both reads and writes.
2530          */
2531         brightness = __get_lcd_brightness(dev);
2532         if (brightness < 0)
2533                 return 0;
2534         ret = set_lcd_brightness(dev, brightness);
2535         if (ret) {
2536                 pr_debug("Backlight method is read-only, disabling backlight support\n");
2537                 return 0;
2538         }
2539 
2540         /* Determine whether or not BIOS supports transflective backlight */
2541         ret = get_tr_backlight_status(dev, &enabled);
2542         dev->tr_backlight_supported = !ret;
2543 
2544         memset(&props, 0, sizeof(props));
2545         props.type = BACKLIGHT_PLATFORM;
2546         props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
2547 
2548         /* Adding an extra level and having 0 change to transflective mode */
2549         if (dev->tr_backlight_supported)
2550                 props.max_brightness++;
2551 
2552         dev->backlight_dev = backlight_device_register("toshiba",
2553                                                        &dev->acpi_dev->dev,
2554                                                        dev,
2555                                                        &toshiba_backlight_data,
2556                                                        &props);
2557         if (IS_ERR(dev->backlight_dev)) {
2558                 ret = PTR_ERR(dev->backlight_dev);
2559                 pr_err("Could not register toshiba backlight device\n");
2560                 dev->backlight_dev = NULL;
2561                 return ret;
2562         }
2563 
2564         dev->backlight_dev->props.brightness = brightness;
2565         return 0;
2566 }
2567 
2568 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
2569 {
2570         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
2571 
2572         remove_toshiba_proc_entries(dev);
2573 
2574         if (dev->sysfs_created)
2575                 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
2576                                    &toshiba_attr_group);
2577 
2578         if (dev->ntfy_supported) {
2579                 i8042_remove_filter(toshiba_acpi_i8042_filter);
2580                 cancel_work_sync(&dev->hotkey_work);
2581         }
2582 
2583         if (dev->hotkey_dev) {
2584                 input_unregister_device(dev->hotkey_dev);
2585                 sparse_keymap_free(dev->hotkey_dev);
2586         }
2587 
2588         if (dev->bt_rfk) {
2589                 rfkill_unregister(dev->bt_rfk);
2590                 rfkill_destroy(dev->bt_rfk);
2591         }
2592 
2593         backlight_device_unregister(dev->backlight_dev);
2594 
2595         if (dev->illumination_supported)
2596                 led_classdev_unregister(&dev->led_dev);
2597 
2598         if (dev->kbd_led_registered)
2599                 led_classdev_unregister(&dev->kbd_led);
2600 
2601         if (dev->eco_supported)
2602                 led_classdev_unregister(&dev->eco_led);
2603 
2604         if (toshiba_acpi)
2605                 toshiba_acpi = NULL;
2606 
2607         kfree(dev);
2608 
2609         return 0;
2610 }
2611 
2612 static const char *find_hci_method(acpi_handle handle)
2613 {
2614         if (acpi_has_method(handle, "GHCI"))
2615                 return "GHCI";
2616 
2617         if (acpi_has_method(handle, "SPFC"))
2618                 return "SPFC";
2619 
2620         return NULL;
2621 }
2622 
2623 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
2624 {
2625         struct toshiba_acpi_dev *dev;
2626         const char *hci_method;
2627         u32 dummy;
2628         bool bt_present;
2629         int ret = 0;
2630 
2631         if (toshiba_acpi)
2632                 return -EBUSY;
2633 
2634         pr_info("Toshiba Laptop ACPI Extras version %s\n",
2635                TOSHIBA_ACPI_VERSION);
2636 
2637         hci_method = find_hci_method(acpi_dev->handle);
2638         if (!hci_method) {
2639                 pr_err("HCI interface not found\n");
2640                 return -ENODEV;
2641         }
2642 
2643         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2644         if (!dev)
2645                 return -ENOMEM;
2646         dev->acpi_dev = acpi_dev;
2647         dev->method_hci = hci_method;
2648         acpi_dev->driver_data = dev;
2649         dev_set_drvdata(&acpi_dev->dev, dev);
2650 
2651         if (toshiba_acpi_setup_keyboard(dev))
2652                 pr_info("Unable to activate hotkeys\n");
2653 
2654         mutex_init(&dev->mutex);
2655 
2656         ret = toshiba_acpi_setup_backlight(dev);
2657         if (ret)
2658                 goto error;
2659 
2660         /* Register rfkill switch for Bluetooth */
2661         if (hci_get_bt_present(dev, &bt_present) == TOS_SUCCESS && bt_present) {
2662                 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
2663                                            &acpi_dev->dev,
2664                                            RFKILL_TYPE_BLUETOOTH,
2665                                            &toshiba_rfk_ops,
2666                                            dev);
2667                 if (!dev->bt_rfk) {
2668                         pr_err("unable to allocate rfkill device\n");
2669                         ret = -ENOMEM;
2670                         goto error;
2671                 }
2672 
2673                 ret = rfkill_register(dev->bt_rfk);
2674                 if (ret) {
2675                         pr_err("unable to register rfkill device\n");
2676                         rfkill_destroy(dev->bt_rfk);
2677                         goto error;
2678                 }
2679         }
2680 
2681         if (toshiba_illumination_available(dev)) {
2682                 dev->led_dev.name = "toshiba::illumination";
2683                 dev->led_dev.max_brightness = 1;
2684                 dev->led_dev.brightness_set = toshiba_illumination_set;
2685                 dev->led_dev.brightness_get = toshiba_illumination_get;
2686                 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
2687                         dev->illumination_supported = 1;
2688         }
2689 
2690         if (toshiba_eco_mode_available(dev)) {
2691                 dev->eco_led.name = "toshiba::eco_mode";
2692                 dev->eco_led.max_brightness = 1;
2693                 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
2694                 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
2695                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
2696                         dev->eco_supported = 1;
2697         }
2698 
2699         dev->kbd_illum_supported = toshiba_kbd_illum_available(dev);
2700         /*
2701          * Only register the LED if KBD illumination is supported
2702          * and the keyboard backlight operation mode is set to FN-Z
2703          */
2704         if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
2705                 dev->kbd_led.name = "toshiba::kbd_backlight";
2706                 dev->kbd_led.max_brightness = 1;
2707                 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
2708                 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
2709                 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
2710                         dev->kbd_led_registered = 1;
2711         }
2712 
2713         ret = toshiba_touchpad_get(dev, &dummy);
2714         dev->touchpad_supported = !ret;
2715 
2716         ret = toshiba_accelerometer_supported(dev);
2717         dev->accelerometer_supported = !ret;
2718 
2719         ret = toshiba_usb_sleep_charge_get(dev, &dummy);
2720         dev->usb_sleep_charge_supported = !ret;
2721 
2722         ret = toshiba_usb_rapid_charge_get(dev, &dummy);
2723         dev->usb_rapid_charge_supported = !ret;
2724 
2725         ret = toshiba_usb_sleep_music_get(dev, &dummy);
2726         dev->usb_sleep_music_supported = !ret;
2727 
2728         ret = toshiba_function_keys_get(dev, &dummy);
2729         dev->kbd_function_keys_supported = !ret;
2730 
2731         ret = toshiba_panel_power_on_get(dev, &dummy);
2732         dev->panel_power_on_supported = !ret;
2733 
2734         ret = toshiba_usb_three_get(dev, &dummy);
2735         dev->usb_three_supported = !ret;
2736 
2737         /* Determine whether or not BIOS supports fan and video interfaces */
2738 
2739         ret = get_video_status(dev, &dummy);
2740         dev->video_supported = !ret;
2741 
2742         ret = get_fan_status(dev, &dummy);
2743         dev->fan_supported = !ret;
2744 
2745         ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
2746                                  &toshiba_attr_group);
2747         if (ret) {
2748                 dev->sysfs_created = 0;
2749                 goto error;
2750         }
2751         dev->sysfs_created = !ret;
2752 
2753         create_toshiba_proc_entries(dev);
2754 
2755         toshiba_acpi = dev;
2756 
2757         return 0;
2758 
2759 error:
2760         toshiba_acpi_remove(acpi_dev);
2761         return ret;
2762 }
2763 
2764 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
2765 {
2766         struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
2767         int ret;
2768 
2769         switch (event) {
2770         case 0x80: /* Hotkeys and some system events */
2771                 toshiba_acpi_process_hotkeys(dev);
2772                 break;
2773         case 0x92: /* Keyboard backlight mode changed */
2774                 /* Update sysfs entries */
2775                 ret = sysfs_update_group(&acpi_dev->dev.kobj,
2776                                          &toshiba_attr_group);
2777                 if (ret)
2778                         pr_err("Unable to update sysfs entries\n");
2779                 break;
2780         case 0x81: /* Unknown */
2781         case 0x82: /* Unknown */
2782         case 0x83: /* Unknown */
2783         case 0x8c: /* Unknown */
2784         case 0x8e: /* Unknown */
2785         case 0x8f: /* Unknown */
2786         case 0x90: /* Unknown */
2787         default:
2788                 pr_info("Unknown event received %x\n", event);
2789                 break;
2790         }
2791 }
2792 
2793 #ifdef CONFIG_PM_SLEEP
2794 static int toshiba_acpi_suspend(struct device *device)
2795 {
2796         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
2797         u32 result;
2798 
2799         if (dev->hotkey_dev)
2800                 result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
2801 
2802         return 0;
2803 }
2804 
2805 static int toshiba_acpi_resume(struct device *device)
2806 {
2807         struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
2808         int error;
2809 
2810         if (dev->hotkey_dev) {
2811                 error = toshiba_acpi_enable_hotkeys(dev);
2812                 if (error)
2813                         pr_info("Unable to re-enable hotkeys\n");
2814         }
2815 
2816         return 0;
2817 }
2818 #endif
2819 
2820 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
2821                          toshiba_acpi_suspend, toshiba_acpi_resume);
2822 
2823 static struct acpi_driver toshiba_acpi_driver = {
2824         .name   = "Toshiba ACPI driver",
2825         .owner  = THIS_MODULE,
2826         .ids    = toshiba_device_ids,
2827         .flags  = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
2828         .ops    = {
2829                 .add            = toshiba_acpi_add,
2830                 .remove         = toshiba_acpi_remove,
2831                 .notify         = toshiba_acpi_notify,
2832         },
2833         .drv.pm = &toshiba_acpi_pm,
2834 };
2835 
2836 static int __init toshiba_acpi_init(void)
2837 {
2838         int ret;
2839 
2840         /*
2841          * Machines with this WMI guid aren't supported due to bugs in
2842          * their AML. This check relies on wmi initializing before
2843          * toshiba_acpi to guarantee guids have been identified.
2844          */
2845         if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
2846                 return -ENODEV;
2847 
2848         toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
2849         if (!toshiba_proc_dir) {
2850                 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
2851                 return -ENODEV;
2852         }
2853 
2854         ret = acpi_bus_register_driver(&toshiba_acpi_driver);
2855         if (ret) {
2856                 pr_err("Failed to register ACPI driver: %d\n", ret);
2857                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
2858         }
2859 
2860         return ret;
2861 }
2862 
2863 static void __exit toshiba_acpi_exit(void)
2864 {
2865         acpi_bus_unregister_driver(&toshiba_acpi_driver);
2866         if (toshiba_proc_dir)
2867                 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
2868 }
2869 
2870 module_init(toshiba_acpi_init);
2871 module_exit(toshiba_acpi_exit);
2872 

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