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[people/arne_f/kernel.git] / drivers / platform / x86 / toshiba_acpi.c
1 /*
2 * toshiba_acpi.c - Toshiba Laptop ACPI Extras
3 *
4 *
5 * Copyright (C) 2002-2004 John Belmonte
6 * Copyright (C) 2008 Philip Langdale
7 * Copyright (C) 2010 Pierre Ducroquet
8 * Copyright (C) 2014 Azael Avalos
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 *
25 * The devolpment page for this driver is located at
26 * http://memebeam.org/toys/ToshibaAcpiDriver.
27 *
28 * Credits:
29 * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
30 * engineering the Windows drivers
31 * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
32 * Rob Miller - TV out and hotkeys help
33 *
34 *
35 * TODO
36 *
37 */
38
39 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
40
41 #define TOSHIBA_ACPI_VERSION "0.20"
42 #define PROC_INTERFACE_VERSION 1
43
44 #include <linux/kernel.h>
45 #include <linux/module.h>
46 #include <linux/init.h>
47 #include <linux/types.h>
48 #include <linux/proc_fs.h>
49 #include <linux/seq_file.h>
50 #include <linux/backlight.h>
51 #include <linux/rfkill.h>
52 #include <linux/input.h>
53 #include <linux/input/sparse-keymap.h>
54 #include <linux/leds.h>
55 #include <linux/slab.h>
56 #include <linux/workqueue.h>
57 #include <linux/i8042.h>
58 #include <linux/acpi.h>
59 #include <linux/dmi.h>
60 #include <asm/uaccess.h>
61
62 MODULE_AUTHOR("John Belmonte");
63 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
64 MODULE_LICENSE("GPL");
65
66 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
67
68 /* Scan code for Fn key on TOS1900 models */
69 #define TOS1900_FN_SCAN 0x6e
70
71 /* Toshiba ACPI method paths */
72 #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
73
74 /* Toshiba HCI interface definitions
75 *
76 * HCI is Toshiba's "Hardware Control Interface" which is supposed to
77 * be uniform across all their models. Ideally we would just call
78 * dedicated ACPI methods instead of using this primitive interface.
79 * However the ACPI methods seem to be incomplete in some areas (for
80 * example they allow setting, but not reading, the LCD brightness value),
81 * so this is still useful.
82 *
83 * SCI stands for "System Configuration Interface" which aim is to
84 * conceal differences in hardware between different models.
85 */
86
87 #define HCI_WORDS 6
88
89 /* operations */
90 #define HCI_SET 0xff00
91 #define HCI_GET 0xfe00
92 #define SCI_OPEN 0xf100
93 #define SCI_CLOSE 0xf200
94 #define SCI_GET 0xf300
95 #define SCI_SET 0xf400
96
97 /* return codes */
98 #define HCI_SUCCESS 0x0000
99 #define HCI_FAILURE 0x1000
100 #define HCI_NOT_SUPPORTED 0x8000
101 #define HCI_EMPTY 0x8c00
102 #define HCI_DATA_NOT_AVAILABLE 0x8d20
103 #define HCI_NOT_INITIALIZED 0x8d50
104 #define SCI_OPEN_CLOSE_OK 0x0044
105 #define SCI_ALREADY_OPEN 0x8100
106 #define SCI_NOT_OPENED 0x8200
107 #define SCI_INPUT_DATA_ERROR 0x8300
108 #define SCI_NOT_PRESENT 0x8600
109
110 /* registers */
111 #define HCI_FAN 0x0004
112 #define HCI_TR_BACKLIGHT 0x0005
113 #define HCI_SYSTEM_EVENT 0x0016
114 #define HCI_VIDEO_OUT 0x001c
115 #define HCI_HOTKEY_EVENT 0x001e
116 #define HCI_LCD_BRIGHTNESS 0x002a
117 #define HCI_WIRELESS 0x0056
118 #define HCI_ACCELEROMETER 0x006d
119 #define HCI_KBD_ILLUMINATION 0x0095
120 #define HCI_ECO_MODE 0x0097
121 #define HCI_ACCELEROMETER2 0x00a6
122 #define SCI_ILLUMINATION 0x014e
123 #define SCI_KBD_ILLUM_STATUS 0x015c
124 #define SCI_TOUCHPAD 0x050e
125
126 /* field definitions */
127 #define HCI_ACCEL_MASK 0x7fff
128 #define HCI_HOTKEY_DISABLE 0x0b
129 #define HCI_HOTKEY_ENABLE 0x09
130 #define HCI_LCD_BRIGHTNESS_BITS 3
131 #define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
132 #define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
133 #define HCI_MISC_SHIFT 0x10
134 #define HCI_VIDEO_OUT_LCD 0x1
135 #define HCI_VIDEO_OUT_CRT 0x2
136 #define HCI_VIDEO_OUT_TV 0x4
137 #define HCI_WIRELESS_KILL_SWITCH 0x01
138 #define HCI_WIRELESS_BT_PRESENT 0x0f
139 #define HCI_WIRELESS_BT_ATTACH 0x40
140 #define HCI_WIRELESS_BT_POWER 0x80
141 #define SCI_KBD_MODE_FNZ 0x1
142 #define SCI_KBD_MODE_AUTO 0x2
143
144 struct toshiba_acpi_dev {
145 struct acpi_device *acpi_dev;
146 const char *method_hci;
147 struct rfkill *bt_rfk;
148 struct input_dev *hotkey_dev;
149 struct work_struct hotkey_work;
150 struct backlight_device *backlight_dev;
151 struct led_classdev led_dev;
152 struct led_classdev kbd_led;
153 struct led_classdev eco_led;
154
155 int force_fan;
156 int last_key_event;
157 int key_event_valid;
158 int kbd_mode;
159 int kbd_time;
160
161 unsigned int illumination_supported:1;
162 unsigned int video_supported:1;
163 unsigned int fan_supported:1;
164 unsigned int system_event_supported:1;
165 unsigned int ntfy_supported:1;
166 unsigned int info_supported:1;
167 unsigned int tr_backlight_supported:1;
168 unsigned int kbd_illum_supported:1;
169 unsigned int kbd_led_registered:1;
170 unsigned int touchpad_supported:1;
171 unsigned int eco_supported:1;
172 unsigned int accelerometer_supported:1;
173 unsigned int sysfs_created:1;
174
175 struct mutex mutex;
176 };
177
178 static struct toshiba_acpi_dev *toshiba_acpi;
179
180 static const struct acpi_device_id toshiba_device_ids[] = {
181 {"TOS6200", 0},
182 {"TOS6208", 0},
183 {"TOS1900", 0},
184 {"", 0},
185 };
186 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
187
188 static const struct key_entry toshiba_acpi_keymap[] = {
189 { KE_KEY, 0x9e, { KEY_RFKILL } },
190 { KE_KEY, 0x101, { KEY_MUTE } },
191 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
192 { KE_KEY, 0x103, { KEY_ZOOMIN } },
193 { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
194 { KE_KEY, 0x139, { KEY_ZOOMRESET } },
195 { KE_KEY, 0x13b, { KEY_COFFEE } },
196 { KE_KEY, 0x13c, { KEY_BATTERY } },
197 { KE_KEY, 0x13d, { KEY_SLEEP } },
198 { KE_KEY, 0x13e, { KEY_SUSPEND } },
199 { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
200 { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
201 { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
202 { KE_KEY, 0x142, { KEY_WLAN } },
203 { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
204 { KE_KEY, 0x17f, { KEY_FN } },
205 { KE_KEY, 0xb05, { KEY_PROG2 } },
206 { KE_KEY, 0xb06, { KEY_WWW } },
207 { KE_KEY, 0xb07, { KEY_MAIL } },
208 { KE_KEY, 0xb30, { KEY_STOP } },
209 { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
210 { KE_KEY, 0xb32, { KEY_NEXTSONG } },
211 { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
212 { KE_KEY, 0xb5a, { KEY_MEDIA } },
213 { KE_IGNORE, 0x1430, { KEY_RESERVED } },
214 { KE_END, 0 },
215 };
216
217 /* alternative keymap */
218 static const struct dmi_system_id toshiba_alt_keymap_dmi[] = {
219 {
220 .matches = {
221 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
222 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite M840"),
223 },
224 },
225 {
226 .matches = {
227 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
228 DMI_MATCH(DMI_PRODUCT_NAME, "Qosmio X75-A"),
229 },
230 },
231 {}
232 };
233
234 static const struct key_entry toshiba_acpi_alt_keymap[] = {
235 { KE_KEY, 0x157, { KEY_MUTE } },
236 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
237 { KE_KEY, 0x103, { KEY_ZOOMIN } },
238 { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
239 { KE_KEY, 0x139, { KEY_ZOOMRESET } },
240 { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
241 { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
242 { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
243 { KE_KEY, 0x158, { KEY_WLAN } },
244 { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
245 { KE_END, 0 },
246 };
247
248 /* utility
249 */
250
251 static __inline__ void _set_bit(u32 * word, u32 mask, int value)
252 {
253 *word = (*word & ~mask) | (mask * value);
254 }
255
256 /* acpi interface wrappers
257 */
258
259 static int write_acpi_int(const char *methodName, int val)
260 {
261 acpi_status status;
262
263 status = acpi_execute_simple_method(NULL, (char *)methodName, val);
264 return (status == AE_OK) ? 0 : -EIO;
265 }
266
267 /* Perform a raw HCI call. Here we don't care about input or output buffer
268 * format.
269 */
270 static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
271 const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
272 {
273 struct acpi_object_list params;
274 union acpi_object in_objs[HCI_WORDS];
275 struct acpi_buffer results;
276 union acpi_object out_objs[HCI_WORDS + 1];
277 acpi_status status;
278 int i;
279
280 params.count = HCI_WORDS;
281 params.pointer = in_objs;
282 for (i = 0; i < HCI_WORDS; ++i) {
283 in_objs[i].type = ACPI_TYPE_INTEGER;
284 in_objs[i].integer.value = in[i];
285 }
286
287 results.length = sizeof(out_objs);
288 results.pointer = out_objs;
289
290 status = acpi_evaluate_object(dev->acpi_dev->handle,
291 (char *)dev->method_hci, &params,
292 &results);
293 if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
294 for (i = 0; i < out_objs->package.count; ++i) {
295 out[i] = out_objs->package.elements[i].integer.value;
296 }
297 }
298
299 return status;
300 }
301
302 /* common hci tasks (get or set one or two value)
303 *
304 * In addition to the ACPI status, the HCI system returns a result which
305 * may be useful (such as "not supported").
306 */
307
308 static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
309 u32 in1, u32 *result)
310 {
311 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
312 u32 out[HCI_WORDS];
313 acpi_status status = hci_raw(dev, in, out);
314 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
315 return status;
316 }
317
318 static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
319 u32 *out1, u32 *result)
320 {
321 u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
322 u32 out[HCI_WORDS];
323 acpi_status status = hci_raw(dev, in, out);
324 *out1 = out[2];
325 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
326 return status;
327 }
328
329 static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
330 u32 in1, u32 in2, u32 *result)
331 {
332 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
333 u32 out[HCI_WORDS];
334 acpi_status status = hci_raw(dev, in, out);
335 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
336 return status;
337 }
338
339 static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
340 u32 *out1, u32 *out2, u32 *result)
341 {
342 u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
343 u32 out[HCI_WORDS];
344 acpi_status status = hci_raw(dev, in, out);
345 *out1 = out[2];
346 *out2 = out[3];
347 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
348 return status;
349 }
350
351 /* common sci tasks
352 */
353
354 static int sci_open(struct toshiba_acpi_dev *dev)
355 {
356 u32 in[HCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
357 u32 out[HCI_WORDS];
358 acpi_status status;
359
360 status = hci_raw(dev, in, out);
361 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
362 pr_err("ACPI call to open SCI failed\n");
363 return 0;
364 }
365
366 if (out[0] == SCI_OPEN_CLOSE_OK) {
367 return 1;
368 } else if (out[0] == SCI_ALREADY_OPEN) {
369 pr_info("Toshiba SCI already opened\n");
370 return 1;
371 } else if (out[0] == SCI_NOT_PRESENT) {
372 pr_info("Toshiba SCI is not present\n");
373 }
374
375 return 0;
376 }
377
378 static void sci_close(struct toshiba_acpi_dev *dev)
379 {
380 u32 in[HCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
381 u32 out[HCI_WORDS];
382 acpi_status status;
383
384 status = hci_raw(dev, in, out);
385 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
386 pr_err("ACPI call to close SCI failed\n");
387 return;
388 }
389
390 if (out[0] == SCI_OPEN_CLOSE_OK)
391 return;
392 else if (out[0] == SCI_NOT_OPENED)
393 pr_info("Toshiba SCI not opened\n");
394 else if (out[0] == SCI_NOT_PRESENT)
395 pr_info("Toshiba SCI is not present\n");
396 }
397
398 static acpi_status sci_read(struct toshiba_acpi_dev *dev, u32 reg,
399 u32 *out1, u32 *result)
400 {
401 u32 in[HCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
402 u32 out[HCI_WORDS];
403 acpi_status status = hci_raw(dev, in, out);
404 *out1 = out[2];
405 *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
406 return status;
407 }
408
409 static acpi_status sci_write(struct toshiba_acpi_dev *dev, u32 reg,
410 u32 in1, u32 *result)
411 {
412 u32 in[HCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
413 u32 out[HCI_WORDS];
414 acpi_status status = hci_raw(dev, in, out);
415 *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
416 return status;
417 }
418
419 /* Illumination support */
420 static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
421 {
422 u32 in[HCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
423 u32 out[HCI_WORDS];
424 acpi_status status;
425
426 if (!sci_open(dev))
427 return 0;
428
429 status = hci_raw(dev, in, out);
430 sci_close(dev);
431 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
432 pr_err("ACPI call to query Illumination support failed\n");
433 return 0;
434 } else if (out[0] == HCI_NOT_SUPPORTED || out[1] != 1) {
435 pr_info("Illumination device not available\n");
436 return 0;
437 }
438
439 return 1;
440 }
441
442 static void toshiba_illumination_set(struct led_classdev *cdev,
443 enum led_brightness brightness)
444 {
445 struct toshiba_acpi_dev *dev = container_of(cdev,
446 struct toshiba_acpi_dev, led_dev);
447 u32 state, result;
448 acpi_status status;
449
450 /* First request : initialize communication. */
451 if (!sci_open(dev))
452 return;
453
454 /* Switch the illumination on/off */
455 state = brightness ? 1 : 0;
456 status = sci_write(dev, SCI_ILLUMINATION, state, &result);
457 sci_close(dev);
458 if (ACPI_FAILURE(status)) {
459 pr_err("ACPI call for illumination failed\n");
460 return;
461 } else if (result == HCI_NOT_SUPPORTED) {
462 pr_info("Illumination not supported\n");
463 return;
464 }
465 }
466
467 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
468 {
469 struct toshiba_acpi_dev *dev = container_of(cdev,
470 struct toshiba_acpi_dev, led_dev);
471 u32 state, result;
472 acpi_status status;
473
474 /* First request : initialize communication. */
475 if (!sci_open(dev))
476 return LED_OFF;
477
478 /* Check the illumination */
479 status = sci_read(dev, SCI_ILLUMINATION, &state, &result);
480 sci_close(dev);
481 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
482 pr_err("ACPI call for illumination failed\n");
483 return LED_OFF;
484 } else if (result == HCI_NOT_SUPPORTED) {
485 pr_info("Illumination not supported\n");
486 return LED_OFF;
487 }
488
489 return state ? LED_FULL : LED_OFF;
490 }
491
492 /* KBD Illumination */
493 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
494 {
495 u32 result;
496 acpi_status status;
497
498 if (!sci_open(dev))
499 return -EIO;
500
501 status = sci_write(dev, SCI_KBD_ILLUM_STATUS, time, &result);
502 sci_close(dev);
503 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
504 pr_err("ACPI call to set KBD backlight status failed\n");
505 return -EIO;
506 } else if (result == HCI_NOT_SUPPORTED) {
507 pr_info("Keyboard backlight status not supported\n");
508 return -ENODEV;
509 }
510
511 return 0;
512 }
513
514 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
515 {
516 u32 result;
517 acpi_status status;
518
519 if (!sci_open(dev))
520 return -EIO;
521
522 status = sci_read(dev, SCI_KBD_ILLUM_STATUS, time, &result);
523 sci_close(dev);
524 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
525 pr_err("ACPI call to get KBD backlight status failed\n");
526 return -EIO;
527 } else if (result == HCI_NOT_SUPPORTED) {
528 pr_info("Keyboard backlight status not supported\n");
529 return -ENODEV;
530 }
531
532 return 0;
533 }
534
535 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
536 {
537 struct toshiba_acpi_dev *dev = container_of(cdev,
538 struct toshiba_acpi_dev, kbd_led);
539 u32 state, result;
540 acpi_status status;
541
542 /* Check the keyboard backlight state */
543 status = hci_read1(dev, HCI_KBD_ILLUMINATION, &state, &result);
544 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
545 pr_err("ACPI call to get the keyboard backlight failed\n");
546 return LED_OFF;
547 } else if (result == HCI_NOT_SUPPORTED) {
548 pr_info("Keyboard backlight not supported\n");
549 return LED_OFF;
550 }
551
552 return state ? LED_FULL : LED_OFF;
553 }
554
555 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
556 enum led_brightness brightness)
557 {
558 struct toshiba_acpi_dev *dev = container_of(cdev,
559 struct toshiba_acpi_dev, kbd_led);
560 u32 state, result;
561 acpi_status status;
562
563 /* Set the keyboard backlight state */
564 state = brightness ? 1 : 0;
565 status = hci_write1(dev, HCI_KBD_ILLUMINATION, state, &result);
566 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
567 pr_err("ACPI call to set KBD Illumination mode failed\n");
568 return;
569 } else if (result == HCI_NOT_SUPPORTED) {
570 pr_info("Keyboard backlight not supported\n");
571 return;
572 }
573 }
574
575 /* TouchPad support */
576 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
577 {
578 u32 result;
579 acpi_status status;
580
581 if (!sci_open(dev))
582 return -EIO;
583
584 status = sci_write(dev, SCI_TOUCHPAD, state, &result);
585 sci_close(dev);
586 if (ACPI_FAILURE(status)) {
587 pr_err("ACPI call to set the touchpad failed\n");
588 return -EIO;
589 } else if (result == HCI_NOT_SUPPORTED) {
590 return -ENODEV;
591 }
592
593 return 0;
594 }
595
596 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
597 {
598 u32 result;
599 acpi_status status;
600
601 if (!sci_open(dev))
602 return -EIO;
603
604 status = sci_read(dev, SCI_TOUCHPAD, state, &result);
605 sci_close(dev);
606 if (ACPI_FAILURE(status)) {
607 pr_err("ACPI call to query the touchpad failed\n");
608 return -EIO;
609 } else if (result == HCI_NOT_SUPPORTED) {
610 return -ENODEV;
611 }
612
613 return 0;
614 }
615
616 /* Eco Mode support */
617 static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
618 {
619 acpi_status status;
620 u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
621 u32 out[HCI_WORDS];
622
623 status = hci_raw(dev, in, out);
624 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
625 pr_info("ACPI call to get ECO led failed\n");
626 return 0;
627 }
628
629 return 1;
630 }
631
632 static enum led_brightness toshiba_eco_mode_get_status(struct led_classdev *cdev)
633 {
634 struct toshiba_acpi_dev *dev = container_of(cdev,
635 struct toshiba_acpi_dev, eco_led);
636 u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
637 u32 out[HCI_WORDS];
638 acpi_status status;
639
640 status = hci_raw(dev, in, out);
641 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
642 pr_err("ACPI call to get ECO led failed\n");
643 return LED_OFF;
644 }
645
646 return out[2] ? LED_FULL : LED_OFF;
647 }
648
649 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
650 enum led_brightness brightness)
651 {
652 struct toshiba_acpi_dev *dev = container_of(cdev,
653 struct toshiba_acpi_dev, eco_led);
654 u32 in[HCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
655 u32 out[HCI_WORDS];
656 acpi_status status;
657
658 /* Switch the Eco Mode led on/off */
659 in[2] = (brightness) ? 1 : 0;
660 status = hci_raw(dev, in, out);
661 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
662 pr_err("ACPI call to set ECO led failed\n");
663 return;
664 }
665 }
666
667 /* Accelerometer support */
668 static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
669 {
670 u32 in[HCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
671 u32 out[HCI_WORDS];
672 acpi_status status;
673
674 /* Check if the accelerometer call exists,
675 * this call also serves as initialization
676 */
677 status = hci_raw(dev, in, out);
678 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
679 pr_err("ACPI call to query the accelerometer failed\n");
680 return -EIO;
681 } else if (out[0] == HCI_DATA_NOT_AVAILABLE ||
682 out[0] == HCI_NOT_INITIALIZED) {
683 pr_err("Accelerometer not initialized\n");
684 return -EIO;
685 } else if (out[0] == HCI_NOT_SUPPORTED) {
686 pr_info("Accelerometer not supported\n");
687 return -ENODEV;
688 }
689
690 return 0;
691 }
692
693 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
694 u32 *xy, u32 *z)
695 {
696 u32 in[HCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
697 u32 out[HCI_WORDS];
698 acpi_status status;
699
700 /* Check the Accelerometer status */
701 status = hci_raw(dev, in, out);
702 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
703 pr_err("ACPI call to query the accelerometer failed\n");
704 return -EIO;
705 }
706
707 *xy = out[2];
708 *z = out[4];
709
710 return 0;
711 }
712
713 /* Bluetooth rfkill handlers */
714
715 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
716 {
717 u32 hci_result;
718 u32 value, value2;
719
720 value = 0;
721 value2 = 0;
722 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
723 if (hci_result == HCI_SUCCESS)
724 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
725
726 return hci_result;
727 }
728
729 static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
730 {
731 u32 hci_result;
732 u32 value, value2;
733
734 value = 0;
735 value2 = 0x0001;
736 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
737
738 *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
739 return hci_result;
740 }
741
742 static int bt_rfkill_set_block(void *data, bool blocked)
743 {
744 struct toshiba_acpi_dev *dev = data;
745 u32 result1, result2;
746 u32 value;
747 int err;
748 bool radio_state;
749
750 value = (blocked == false);
751
752 mutex_lock(&dev->mutex);
753 if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
754 err = -EIO;
755 goto out;
756 }
757
758 if (!radio_state) {
759 err = 0;
760 goto out;
761 }
762
763 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
764 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
765
766 if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
767 err = -EIO;
768 else
769 err = 0;
770 out:
771 mutex_unlock(&dev->mutex);
772 return err;
773 }
774
775 static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
776 {
777 bool new_rfk_state;
778 bool value;
779 u32 hci_result;
780 struct toshiba_acpi_dev *dev = data;
781
782 mutex_lock(&dev->mutex);
783
784 hci_result = hci_get_radio_state(dev, &value);
785 if (hci_result != HCI_SUCCESS) {
786 /* Can't do anything useful */
787 mutex_unlock(&dev->mutex);
788 return;
789 }
790
791 new_rfk_state = value;
792
793 mutex_unlock(&dev->mutex);
794
795 if (rfkill_set_hw_state(rfkill, !new_rfk_state))
796 bt_rfkill_set_block(data, true);
797 }
798
799 static const struct rfkill_ops toshiba_rfk_ops = {
800 .set_block = bt_rfkill_set_block,
801 .poll = bt_rfkill_poll,
802 };
803
804 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
805 {
806 u32 hci_result;
807 u32 status;
808
809 hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
810 *enabled = !status;
811 return hci_result == HCI_SUCCESS ? 0 : -EIO;
812 }
813
814 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
815 {
816 u32 hci_result;
817 u32 value = !enable;
818
819 hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
820 return hci_result == HCI_SUCCESS ? 0 : -EIO;
821 }
822
823 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
824
825 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
826 {
827 u32 hci_result;
828 u32 value;
829 int brightness = 0;
830
831 if (dev->tr_backlight_supported) {
832 bool enabled;
833 int ret = get_tr_backlight_status(dev, &enabled);
834 if (ret)
835 return ret;
836 if (enabled)
837 return 0;
838 brightness++;
839 }
840
841 hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
842 if (hci_result == HCI_SUCCESS)
843 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
844
845 return -EIO;
846 }
847
848 static int get_lcd_brightness(struct backlight_device *bd)
849 {
850 struct toshiba_acpi_dev *dev = bl_get_data(bd);
851 return __get_lcd_brightness(dev);
852 }
853
854 static int lcd_proc_show(struct seq_file *m, void *v)
855 {
856 struct toshiba_acpi_dev *dev = m->private;
857 int value;
858 int levels;
859
860 if (!dev->backlight_dev)
861 return -ENODEV;
862
863 levels = dev->backlight_dev->props.max_brightness + 1;
864 value = get_lcd_brightness(dev->backlight_dev);
865 if (value >= 0) {
866 seq_printf(m, "brightness: %d\n", value);
867 seq_printf(m, "brightness_levels: %d\n", levels);
868 return 0;
869 }
870
871 pr_err("Error reading LCD brightness\n");
872 return -EIO;
873 }
874
875 static int lcd_proc_open(struct inode *inode, struct file *file)
876 {
877 return single_open(file, lcd_proc_show, PDE_DATA(inode));
878 }
879
880 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
881 {
882 u32 in[HCI_WORDS] = { HCI_SET, HCI_LCD_BRIGHTNESS, 0, 0, 0, 0 };
883 u32 out[HCI_WORDS];
884 acpi_status status;
885
886 if (dev->tr_backlight_supported) {
887 bool enable = !value;
888 int ret = set_tr_backlight_status(dev, enable);
889 if (ret)
890 return ret;
891 if (value)
892 value--;
893 }
894
895 in[2] = value << HCI_LCD_BRIGHTNESS_SHIFT;
896 status = hci_raw(dev, in, out);
897 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
898 pr_err("ACPI call to set brightness failed");
899 return -EIO;
900 }
901 /* Extra check for "incomplete" backlight method, where the AML code
902 * doesn't check for HCI_SET or HCI_GET and returns HCI_SUCCESS,
903 * the actual brightness, and in some cases the max brightness.
904 */
905 if (out[2] > 0 || out[3] == 0xE000)
906 return -ENODEV;
907
908 return out[0] == HCI_SUCCESS ? 0 : -EIO;
909 }
910
911 static int set_lcd_status(struct backlight_device *bd)
912 {
913 struct toshiba_acpi_dev *dev = bl_get_data(bd);
914 return set_lcd_brightness(dev, bd->props.brightness);
915 }
916
917 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
918 size_t count, loff_t *pos)
919 {
920 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
921 char cmd[42];
922 size_t len;
923 int value;
924 int ret;
925 int levels = dev->backlight_dev->props.max_brightness + 1;
926
927 len = min(count, sizeof(cmd) - 1);
928 if (copy_from_user(cmd, buf, len))
929 return -EFAULT;
930 cmd[len] = '\0';
931
932 if (sscanf(cmd, " brightness : %i", &value) == 1 &&
933 value >= 0 && value < levels) {
934 ret = set_lcd_brightness(dev, value);
935 if (ret == 0)
936 ret = count;
937 } else {
938 ret = -EINVAL;
939 }
940 return ret;
941 }
942
943 static const struct file_operations lcd_proc_fops = {
944 .owner = THIS_MODULE,
945 .open = lcd_proc_open,
946 .read = seq_read,
947 .llseek = seq_lseek,
948 .release = single_release,
949 .write = lcd_proc_write,
950 };
951
952 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
953 {
954 u32 hci_result;
955
956 hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
957 return hci_result == HCI_SUCCESS ? 0 : -EIO;
958 }
959
960 static int video_proc_show(struct seq_file *m, void *v)
961 {
962 struct toshiba_acpi_dev *dev = m->private;
963 u32 value;
964 int ret;
965
966 ret = get_video_status(dev, &value);
967 if (!ret) {
968 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
969 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
970 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
971 seq_printf(m, "lcd_out: %d\n", is_lcd);
972 seq_printf(m, "crt_out: %d\n", is_crt);
973 seq_printf(m, "tv_out: %d\n", is_tv);
974 }
975
976 return ret;
977 }
978
979 static int video_proc_open(struct inode *inode, struct file *file)
980 {
981 return single_open(file, video_proc_show, PDE_DATA(inode));
982 }
983
984 static ssize_t video_proc_write(struct file *file, const char __user *buf,
985 size_t count, loff_t *pos)
986 {
987 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
988 char *cmd, *buffer;
989 int ret;
990 int value;
991 int remain = count;
992 int lcd_out = -1;
993 int crt_out = -1;
994 int tv_out = -1;
995 u32 video_out;
996
997 cmd = kmalloc(count + 1, GFP_KERNEL);
998 if (!cmd)
999 return -ENOMEM;
1000 if (copy_from_user(cmd, buf, count)) {
1001 kfree(cmd);
1002 return -EFAULT;
1003 }
1004 cmd[count] = '\0';
1005
1006 buffer = cmd;
1007
1008 /* scan expression. Multiple expressions may be delimited with ;
1009 *
1010 * NOTE: to keep scanning simple, invalid fields are ignored
1011 */
1012 while (remain) {
1013 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
1014 lcd_out = value & 1;
1015 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
1016 crt_out = value & 1;
1017 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
1018 tv_out = value & 1;
1019 /* advance to one character past the next ; */
1020 do {
1021 ++buffer;
1022 --remain;
1023 }
1024 while (remain && *(buffer - 1) != ';');
1025 }
1026
1027 kfree(cmd);
1028
1029 ret = get_video_status(dev, &video_out);
1030 if (!ret) {
1031 unsigned int new_video_out = video_out;
1032 if (lcd_out != -1)
1033 _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
1034 if (crt_out != -1)
1035 _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
1036 if (tv_out != -1)
1037 _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
1038 /* To avoid unnecessary video disruption, only write the new
1039 * video setting if something changed. */
1040 if (new_video_out != video_out)
1041 ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
1042 }
1043
1044 return ret ? ret : count;
1045 }
1046
1047 static const struct file_operations video_proc_fops = {
1048 .owner = THIS_MODULE,
1049 .open = video_proc_open,
1050 .read = seq_read,
1051 .llseek = seq_lseek,
1052 .release = single_release,
1053 .write = video_proc_write,
1054 };
1055
1056 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1057 {
1058 u32 hci_result;
1059
1060 hci_read1(dev, HCI_FAN, status, &hci_result);
1061 return hci_result == HCI_SUCCESS ? 0 : -EIO;
1062 }
1063
1064 static int fan_proc_show(struct seq_file *m, void *v)
1065 {
1066 struct toshiba_acpi_dev *dev = m->private;
1067 int ret;
1068 u32 value;
1069
1070 ret = get_fan_status(dev, &value);
1071 if (!ret) {
1072 seq_printf(m, "running: %d\n", (value > 0));
1073 seq_printf(m, "force_on: %d\n", dev->force_fan);
1074 }
1075
1076 return ret;
1077 }
1078
1079 static int fan_proc_open(struct inode *inode, struct file *file)
1080 {
1081 return single_open(file, fan_proc_show, PDE_DATA(inode));
1082 }
1083
1084 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1085 size_t count, loff_t *pos)
1086 {
1087 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1088 char cmd[42];
1089 size_t len;
1090 int value;
1091 u32 hci_result;
1092
1093 len = min(count, sizeof(cmd) - 1);
1094 if (copy_from_user(cmd, buf, len))
1095 return -EFAULT;
1096 cmd[len] = '\0';
1097
1098 if (sscanf(cmd, " force_on : %i", &value) == 1 &&
1099 value >= 0 && value <= 1) {
1100 hci_write1(dev, HCI_FAN, value, &hci_result);
1101 if (hci_result != HCI_SUCCESS)
1102 return -EIO;
1103 else
1104 dev->force_fan = value;
1105 } else {
1106 return -EINVAL;
1107 }
1108
1109 return count;
1110 }
1111
1112 static const struct file_operations fan_proc_fops = {
1113 .owner = THIS_MODULE,
1114 .open = fan_proc_open,
1115 .read = seq_read,
1116 .llseek = seq_lseek,
1117 .release = single_release,
1118 .write = fan_proc_write,
1119 };
1120
1121 static int keys_proc_show(struct seq_file *m, void *v)
1122 {
1123 struct toshiba_acpi_dev *dev = m->private;
1124 u32 hci_result;
1125 u32 value;
1126
1127 if (!dev->key_event_valid && dev->system_event_supported) {
1128 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1129 if (hci_result == HCI_SUCCESS) {
1130 dev->key_event_valid = 1;
1131 dev->last_key_event = value;
1132 } else if (hci_result == HCI_EMPTY) {
1133 /* better luck next time */
1134 } else if (hci_result == HCI_NOT_SUPPORTED) {
1135 /* This is a workaround for an unresolved issue on
1136 * some machines where system events sporadically
1137 * become disabled. */
1138 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1139 pr_notice("Re-enabled hotkeys\n");
1140 } else {
1141 pr_err("Error reading hotkey status\n");
1142 return -EIO;
1143 }
1144 }
1145
1146 seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
1147 seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
1148 return 0;
1149 }
1150
1151 static int keys_proc_open(struct inode *inode, struct file *file)
1152 {
1153 return single_open(file, keys_proc_show, PDE_DATA(inode));
1154 }
1155
1156 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1157 size_t count, loff_t *pos)
1158 {
1159 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1160 char cmd[42];
1161 size_t len;
1162 int value;
1163
1164 len = min(count, sizeof(cmd) - 1);
1165 if (copy_from_user(cmd, buf, len))
1166 return -EFAULT;
1167 cmd[len] = '\0';
1168
1169 if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
1170 dev->key_event_valid = 0;
1171 } else {
1172 return -EINVAL;
1173 }
1174
1175 return count;
1176 }
1177
1178 static const struct file_operations keys_proc_fops = {
1179 .owner = THIS_MODULE,
1180 .open = keys_proc_open,
1181 .read = seq_read,
1182 .llseek = seq_lseek,
1183 .release = single_release,
1184 .write = keys_proc_write,
1185 };
1186
1187 static int version_proc_show(struct seq_file *m, void *v)
1188 {
1189 seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
1190 seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
1191 return 0;
1192 }
1193
1194 static int version_proc_open(struct inode *inode, struct file *file)
1195 {
1196 return single_open(file, version_proc_show, PDE_DATA(inode));
1197 }
1198
1199 static const struct file_operations version_proc_fops = {
1200 .owner = THIS_MODULE,
1201 .open = version_proc_open,
1202 .read = seq_read,
1203 .llseek = seq_lseek,
1204 .release = single_release,
1205 };
1206
1207 /* proc and module init
1208 */
1209
1210 #define PROC_TOSHIBA "toshiba"
1211
1212 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1213 {
1214 if (dev->backlight_dev)
1215 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1216 &lcd_proc_fops, dev);
1217 if (dev->video_supported)
1218 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1219 &video_proc_fops, dev);
1220 if (dev->fan_supported)
1221 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1222 &fan_proc_fops, dev);
1223 if (dev->hotkey_dev)
1224 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1225 &keys_proc_fops, dev);
1226 proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1227 &version_proc_fops, dev);
1228 }
1229
1230 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1231 {
1232 if (dev->backlight_dev)
1233 remove_proc_entry("lcd", toshiba_proc_dir);
1234 if (dev->video_supported)
1235 remove_proc_entry("video", toshiba_proc_dir);
1236 if (dev->fan_supported)
1237 remove_proc_entry("fan", toshiba_proc_dir);
1238 if (dev->hotkey_dev)
1239 remove_proc_entry("keys", toshiba_proc_dir);
1240 remove_proc_entry("version", toshiba_proc_dir);
1241 }
1242
1243 static const struct backlight_ops toshiba_backlight_data = {
1244 .options = BL_CORE_SUSPENDRESUME,
1245 .get_brightness = get_lcd_brightness,
1246 .update_status = set_lcd_status,
1247 };
1248
1249 /*
1250 * Sysfs files
1251 */
1252
1253 static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
1254 struct device_attribute *attr,
1255 const char *buf, size_t count)
1256 {
1257 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1258 int mode = -1;
1259 int time = -1;
1260
1261 if (sscanf(buf, "%i", &mode) != 1 && (mode != 2 || mode != 1))
1262 return -EINVAL;
1263
1264 /* Set the Keyboard Backlight Mode where:
1265 * Mode - Auto (2) | FN-Z (1)
1266 * Auto - KBD backlight turns off automatically in given time
1267 * FN-Z - KBD backlight "toggles" when hotkey pressed
1268 */
1269 if (mode != -1 && toshiba->kbd_mode != mode) {
1270 time = toshiba->kbd_time << HCI_MISC_SHIFT;
1271 time = time + toshiba->kbd_mode;
1272 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1273 return -EIO;
1274 toshiba->kbd_mode = mode;
1275 }
1276
1277 return count;
1278 }
1279
1280 static ssize_t toshiba_kbd_bl_mode_show(struct device *dev,
1281 struct device_attribute *attr,
1282 char *buf)
1283 {
1284 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1285 u32 time;
1286
1287 if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1288 return -EIO;
1289
1290 return sprintf(buf, "%i\n", time & 0x07);
1291 }
1292
1293 static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev,
1294 struct device_attribute *attr,
1295 const char *buf, size_t count)
1296 {
1297 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1298 int time = -1;
1299
1300 if (sscanf(buf, "%i", &time) != 1 && (time < 0 || time > 60))
1301 return -EINVAL;
1302
1303 /* Set the Keyboard Backlight Timeout: 0-60 seconds */
1304 if (time != -1 && toshiba->kbd_time != time) {
1305 time = time << HCI_MISC_SHIFT;
1306 time = (toshiba->kbd_mode == SCI_KBD_MODE_AUTO) ?
1307 time + 1 : time + 2;
1308 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1309 return -EIO;
1310 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1311 }
1312
1313 return count;
1314 }
1315
1316 static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev,
1317 struct device_attribute *attr,
1318 char *buf)
1319 {
1320 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1321 u32 time;
1322
1323 if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1324 return -EIO;
1325
1326 return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1327 }
1328
1329 static ssize_t toshiba_touchpad_store(struct device *dev,
1330 struct device_attribute *attr,
1331 const char *buf, size_t count)
1332 {
1333 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1334 int state;
1335
1336 /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1337 if (sscanf(buf, "%i", &state) == 1 && (state == 0 || state == 1)) {
1338 if (toshiba_touchpad_set(toshiba, state) < 0)
1339 return -EIO;
1340 }
1341
1342 return count;
1343 }
1344
1345 static ssize_t toshiba_touchpad_show(struct device *dev,
1346 struct device_attribute *attr, char *buf)
1347 {
1348 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1349 u32 state;
1350 int ret;
1351
1352 ret = toshiba_touchpad_get(toshiba, &state);
1353 if (ret < 0)
1354 return ret;
1355
1356 return sprintf(buf, "%i\n", state);
1357 }
1358
1359 static ssize_t toshiba_position_show(struct device *dev,
1360 struct device_attribute *attr, char *buf)
1361 {
1362 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1363 u32 xyval, zval, tmp;
1364 u16 x, y, z;
1365 int ret;
1366
1367 xyval = zval = 0;
1368 ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
1369 if (ret < 0)
1370 return ret;
1371
1372 x = xyval & HCI_ACCEL_MASK;
1373 tmp = xyval >> HCI_MISC_SHIFT;
1374 y = tmp & HCI_ACCEL_MASK;
1375 z = zval & HCI_ACCEL_MASK;
1376
1377 return sprintf(buf, "%d %d %d\n", x, y, z);
1378 }
1379
1380 static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR,
1381 toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store);
1382 static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR,
1383 toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store);
1384 static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR,
1385 toshiba_touchpad_show, toshiba_touchpad_store);
1386 static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL);
1387
1388 static struct attribute *toshiba_attributes[] = {
1389 &dev_attr_kbd_backlight_mode.attr,
1390 &dev_attr_kbd_backlight_timeout.attr,
1391 &dev_attr_touchpad.attr,
1392 &dev_attr_position.attr,
1393 NULL,
1394 };
1395
1396 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
1397 struct attribute *attr, int idx)
1398 {
1399 struct device *dev = container_of(kobj, struct device, kobj);
1400 struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
1401 bool exists = true;
1402
1403 if (attr == &dev_attr_kbd_backlight_mode.attr)
1404 exists = (drv->kbd_illum_supported) ? true : false;
1405 else if (attr == &dev_attr_kbd_backlight_timeout.attr)
1406 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
1407 else if (attr == &dev_attr_touchpad.attr)
1408 exists = (drv->touchpad_supported) ? true : false;
1409 else if (attr == &dev_attr_position.attr)
1410 exists = (drv->accelerometer_supported) ? true : false;
1411
1412 return exists ? attr->mode : 0;
1413 }
1414
1415 static struct attribute_group toshiba_attr_group = {
1416 .is_visible = toshiba_sysfs_is_visible,
1417 .attrs = toshiba_attributes,
1418 };
1419
1420 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
1421 struct serio *port)
1422 {
1423 if (str & 0x20)
1424 return false;
1425
1426 if (unlikely(data == 0xe0))
1427 return false;
1428
1429 if ((data & 0x7f) == TOS1900_FN_SCAN) {
1430 schedule_work(&toshiba_acpi->hotkey_work);
1431 return true;
1432 }
1433
1434 return false;
1435 }
1436
1437 static void toshiba_acpi_hotkey_work(struct work_struct *work)
1438 {
1439 acpi_handle ec_handle = ec_get_handle();
1440 acpi_status status;
1441
1442 if (!ec_handle)
1443 return;
1444
1445 status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
1446 if (ACPI_FAILURE(status))
1447 pr_err("ACPI NTFY method execution failed\n");
1448 }
1449
1450 /*
1451 * Returns hotkey scancode, or < 0 on failure.
1452 */
1453 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
1454 {
1455 unsigned long long value;
1456 acpi_status status;
1457
1458 status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
1459 NULL, &value);
1460 if (ACPI_FAILURE(status)) {
1461 pr_err("ACPI INFO method execution failed\n");
1462 return -EIO;
1463 }
1464
1465 return value;
1466 }
1467
1468 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
1469 int scancode)
1470 {
1471 if (scancode == 0x100)
1472 return;
1473
1474 /* act on key press; ignore key release */
1475 if (scancode & 0x80)
1476 return;
1477
1478 if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
1479 pr_info("Unknown key %x\n", scancode);
1480 }
1481
1482 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
1483 {
1484 acpi_status status;
1485 acpi_handle ec_handle;
1486 int error;
1487 u32 hci_result;
1488 const struct key_entry *keymap = toshiba_acpi_keymap;
1489
1490 dev->hotkey_dev = input_allocate_device();
1491 if (!dev->hotkey_dev)
1492 return -ENOMEM;
1493
1494 dev->hotkey_dev->name = "Toshiba input device";
1495 dev->hotkey_dev->phys = "toshiba_acpi/input0";
1496 dev->hotkey_dev->id.bustype = BUS_HOST;
1497
1498 if (dmi_check_system(toshiba_alt_keymap_dmi))
1499 keymap = toshiba_acpi_alt_keymap;
1500 error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
1501 if (error)
1502 goto err_free_dev;
1503
1504 /*
1505 * For some machines the SCI responsible for providing hotkey
1506 * notification doesn't fire. We can trigger the notification
1507 * whenever the Fn key is pressed using the NTFY method, if
1508 * supported, so if it's present set up an i8042 key filter
1509 * for this purpose.
1510 */
1511 status = AE_ERROR;
1512 ec_handle = ec_get_handle();
1513 if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
1514 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
1515
1516 error = i8042_install_filter(toshiba_acpi_i8042_filter);
1517 if (error) {
1518 pr_err("Error installing key filter\n");
1519 goto err_free_keymap;
1520 }
1521
1522 dev->ntfy_supported = 1;
1523 }
1524
1525 /*
1526 * Determine hotkey query interface. Prefer using the INFO
1527 * method when it is available.
1528 */
1529 if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
1530 dev->info_supported = 1;
1531 else {
1532 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1533 if (hci_result == HCI_SUCCESS)
1534 dev->system_event_supported = 1;
1535 }
1536
1537 if (!dev->info_supported && !dev->system_event_supported) {
1538 pr_warn("No hotkey query interface found\n");
1539 goto err_remove_filter;
1540 }
1541
1542 status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
1543 if (ACPI_FAILURE(status)) {
1544 pr_info("Unable to enable hotkeys\n");
1545 error = -ENODEV;
1546 goto err_remove_filter;
1547 }
1548
1549 error = input_register_device(dev->hotkey_dev);
1550 if (error) {
1551 pr_info("Unable to register input device\n");
1552 goto err_remove_filter;
1553 }
1554
1555 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
1556 return 0;
1557
1558 err_remove_filter:
1559 if (dev->ntfy_supported)
1560 i8042_remove_filter(toshiba_acpi_i8042_filter);
1561 err_free_keymap:
1562 sparse_keymap_free(dev->hotkey_dev);
1563 err_free_dev:
1564 input_free_device(dev->hotkey_dev);
1565 dev->hotkey_dev = NULL;
1566 return error;
1567 }
1568
1569 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
1570 {
1571 struct backlight_properties props;
1572 int brightness;
1573 int ret;
1574 bool enabled;
1575
1576 /*
1577 * Some machines don't support the backlight methods at all, and
1578 * others support it read-only. Either of these is pretty useless,
1579 * so only register the backlight device if the backlight method
1580 * supports both reads and writes.
1581 */
1582 brightness = __get_lcd_brightness(dev);
1583 if (brightness < 0)
1584 return 0;
1585 ret = set_lcd_brightness(dev, brightness);
1586 if (ret) {
1587 pr_debug("Backlight method is read-only, disabling backlight support\n");
1588 return 0;
1589 }
1590
1591 /* Determine whether or not BIOS supports transflective backlight */
1592 ret = get_tr_backlight_status(dev, &enabled);
1593 dev->tr_backlight_supported = !ret;
1594
1595 memset(&props, 0, sizeof(props));
1596 props.type = BACKLIGHT_PLATFORM;
1597 props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1598
1599 /* adding an extra level and having 0 change to transflective mode */
1600 if (dev->tr_backlight_supported)
1601 props.max_brightness++;
1602
1603 dev->backlight_dev = backlight_device_register("toshiba",
1604 &dev->acpi_dev->dev,
1605 dev,
1606 &toshiba_backlight_data,
1607 &props);
1608 if (IS_ERR(dev->backlight_dev)) {
1609 ret = PTR_ERR(dev->backlight_dev);
1610 pr_err("Could not register toshiba backlight device\n");
1611 dev->backlight_dev = NULL;
1612 return ret;
1613 }
1614
1615 dev->backlight_dev->props.brightness = brightness;
1616 return 0;
1617 }
1618
1619 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
1620 {
1621 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1622
1623 remove_toshiba_proc_entries(dev);
1624
1625 if (dev->sysfs_created)
1626 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
1627 &toshiba_attr_group);
1628
1629 if (dev->ntfy_supported) {
1630 i8042_remove_filter(toshiba_acpi_i8042_filter);
1631 cancel_work_sync(&dev->hotkey_work);
1632 }
1633
1634 if (dev->hotkey_dev) {
1635 input_unregister_device(dev->hotkey_dev);
1636 sparse_keymap_free(dev->hotkey_dev);
1637 }
1638
1639 if (dev->bt_rfk) {
1640 rfkill_unregister(dev->bt_rfk);
1641 rfkill_destroy(dev->bt_rfk);
1642 }
1643
1644 if (dev->backlight_dev)
1645 backlight_device_unregister(dev->backlight_dev);
1646
1647 if (dev->illumination_supported)
1648 led_classdev_unregister(&dev->led_dev);
1649
1650 if (dev->kbd_led_registered)
1651 led_classdev_unregister(&dev->kbd_led);
1652
1653 if (dev->eco_supported)
1654 led_classdev_unregister(&dev->eco_led);
1655
1656 if (toshiba_acpi)
1657 toshiba_acpi = NULL;
1658
1659 kfree(dev);
1660
1661 return 0;
1662 }
1663
1664 static const char *find_hci_method(acpi_handle handle)
1665 {
1666 if (acpi_has_method(handle, "GHCI"))
1667 return "GHCI";
1668
1669 if (acpi_has_method(handle, "SPFC"))
1670 return "SPFC";
1671
1672 return NULL;
1673 }
1674
1675 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
1676 {
1677 struct toshiba_acpi_dev *dev;
1678 const char *hci_method;
1679 u32 dummy;
1680 bool bt_present;
1681 int ret = 0;
1682
1683 if (toshiba_acpi)
1684 return -EBUSY;
1685
1686 pr_info("Toshiba Laptop ACPI Extras version %s\n",
1687 TOSHIBA_ACPI_VERSION);
1688
1689 hci_method = find_hci_method(acpi_dev->handle);
1690 if (!hci_method) {
1691 pr_err("HCI interface not found\n");
1692 return -ENODEV;
1693 }
1694
1695 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1696 if (!dev)
1697 return -ENOMEM;
1698 dev->acpi_dev = acpi_dev;
1699 dev->method_hci = hci_method;
1700 acpi_dev->driver_data = dev;
1701 dev_set_drvdata(&acpi_dev->dev, dev);
1702
1703 if (toshiba_acpi_setup_keyboard(dev))
1704 pr_info("Unable to activate hotkeys\n");
1705
1706 mutex_init(&dev->mutex);
1707
1708 ret = toshiba_acpi_setup_backlight(dev);
1709 if (ret)
1710 goto error;
1711
1712 /* Register rfkill switch for Bluetooth */
1713 if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
1714 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
1715 &acpi_dev->dev,
1716 RFKILL_TYPE_BLUETOOTH,
1717 &toshiba_rfk_ops,
1718 dev);
1719 if (!dev->bt_rfk) {
1720 pr_err("unable to allocate rfkill device\n");
1721 ret = -ENOMEM;
1722 goto error;
1723 }
1724
1725 ret = rfkill_register(dev->bt_rfk);
1726 if (ret) {
1727 pr_err("unable to register rfkill device\n");
1728 rfkill_destroy(dev->bt_rfk);
1729 goto error;
1730 }
1731 }
1732
1733 if (toshiba_illumination_available(dev)) {
1734 dev->led_dev.name = "toshiba::illumination";
1735 dev->led_dev.max_brightness = 1;
1736 dev->led_dev.brightness_set = toshiba_illumination_set;
1737 dev->led_dev.brightness_get = toshiba_illumination_get;
1738 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1739 dev->illumination_supported = 1;
1740 }
1741
1742 if (toshiba_eco_mode_available(dev)) {
1743 dev->eco_led.name = "toshiba::eco_mode";
1744 dev->eco_led.max_brightness = 1;
1745 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
1746 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
1747 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
1748 dev->eco_supported = 1;
1749 }
1750
1751 ret = toshiba_kbd_illum_status_get(dev, &dummy);
1752 if (!ret) {
1753 dev->kbd_time = dummy >> HCI_MISC_SHIFT;
1754 dev->kbd_mode = dummy & 0x07;
1755 }
1756 dev->kbd_illum_supported = !ret;
1757 /*
1758 * Only register the LED if KBD illumination is supported
1759 * and the keyboard backlight operation mode is set to FN-Z
1760 */
1761 if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
1762 dev->kbd_led.name = "toshiba::kbd_backlight";
1763 dev->kbd_led.max_brightness = 1;
1764 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
1765 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
1766 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
1767 dev->kbd_led_registered = 1;
1768 }
1769
1770 ret = toshiba_touchpad_get(dev, &dummy);
1771 dev->touchpad_supported = !ret;
1772
1773 ret = toshiba_accelerometer_supported(dev);
1774 dev->accelerometer_supported = !ret;
1775
1776 /* Determine whether or not BIOS supports fan and video interfaces */
1777
1778 ret = get_video_status(dev, &dummy);
1779 dev->video_supported = !ret;
1780
1781 ret = get_fan_status(dev, &dummy);
1782 dev->fan_supported = !ret;
1783
1784 ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
1785 &toshiba_attr_group);
1786 if (ret) {
1787 dev->sysfs_created = 0;
1788 goto error;
1789 }
1790 dev->sysfs_created = !ret;
1791
1792 create_toshiba_proc_entries(dev);
1793
1794 toshiba_acpi = dev;
1795
1796 return 0;
1797
1798 error:
1799 toshiba_acpi_remove(acpi_dev);
1800 return ret;
1801 }
1802
1803 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
1804 {
1805 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1806 u32 hci_result, value;
1807 int retries = 3;
1808 int scancode;
1809
1810 if (event != 0x80)
1811 return;
1812
1813 if (dev->info_supported) {
1814 scancode = toshiba_acpi_query_hotkey(dev);
1815 if (scancode < 0)
1816 pr_err("Failed to query hotkey event\n");
1817 else if (scancode != 0)
1818 toshiba_acpi_report_hotkey(dev, scancode);
1819 } else if (dev->system_event_supported) {
1820 do {
1821 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1822 switch (hci_result) {
1823 case HCI_SUCCESS:
1824 toshiba_acpi_report_hotkey(dev, (int)value);
1825 break;
1826 case HCI_NOT_SUPPORTED:
1827 /*
1828 * This is a workaround for an unresolved
1829 * issue on some machines where system events
1830 * sporadically become disabled.
1831 */
1832 hci_write1(dev, HCI_SYSTEM_EVENT, 1,
1833 &hci_result);
1834 pr_notice("Re-enabled hotkeys\n");
1835 /* fall through */
1836 default:
1837 retries--;
1838 break;
1839 }
1840 } while (retries && hci_result != HCI_EMPTY);
1841 }
1842 }
1843
1844 #ifdef CONFIG_PM_SLEEP
1845 static int toshiba_acpi_suspend(struct device *device)
1846 {
1847 struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1848 u32 result;
1849
1850 if (dev->hotkey_dev)
1851 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
1852
1853 return 0;
1854 }
1855
1856 static int toshiba_acpi_resume(struct device *device)
1857 {
1858 struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1859 u32 result;
1860
1861 if (dev->hotkey_dev)
1862 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
1863
1864 return 0;
1865 }
1866 #endif
1867
1868 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
1869 toshiba_acpi_suspend, toshiba_acpi_resume);
1870
1871 static struct acpi_driver toshiba_acpi_driver = {
1872 .name = "Toshiba ACPI driver",
1873 .owner = THIS_MODULE,
1874 .ids = toshiba_device_ids,
1875 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1876 .ops = {
1877 .add = toshiba_acpi_add,
1878 .remove = toshiba_acpi_remove,
1879 .notify = toshiba_acpi_notify,
1880 },
1881 .drv.pm = &toshiba_acpi_pm,
1882 };
1883
1884 static int __init toshiba_acpi_init(void)
1885 {
1886 int ret;
1887
1888 /*
1889 * Machines with this WMI guid aren't supported due to bugs in
1890 * their AML. This check relies on wmi initializing before
1891 * toshiba_acpi to guarantee guids have been identified.
1892 */
1893 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
1894 return -ENODEV;
1895
1896 toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1897 if (!toshiba_proc_dir) {
1898 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
1899 return -ENODEV;
1900 }
1901
1902 ret = acpi_bus_register_driver(&toshiba_acpi_driver);
1903 if (ret) {
1904 pr_err("Failed to register ACPI driver: %d\n", ret);
1905 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1906 }
1907
1908 return ret;
1909 }
1910
1911 static void __exit toshiba_acpi_exit(void)
1912 {
1913 acpi_bus_unregister_driver(&toshiba_acpi_driver);
1914 if (toshiba_proc_dir)
1915 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1916 }
1917
1918 module_init(toshiba_acpi_init);
1919 module_exit(toshiba_acpi_exit);
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