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[deliverable/linux.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 *
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 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 *
24 * The devolpment page for this driver is located at
25 * http://memebeam.org/toys/ToshibaAcpiDriver.
26 *
27 * Credits:
28 * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
29 * engineering the Windows drivers
30 * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
31 * Rob Miller - TV out and hotkeys help
32 *
33 *
34 * TODO
35 *
36 */
37
38 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
39
40 #define TOSHIBA_ACPI_VERSION "0.19"
41 #define PROC_INTERFACE_VERSION 1
42
43 #include <linux/kernel.h>
44 #include <linux/module.h>
45 #include <linux/init.h>
46 #include <linux/types.h>
47 #include <linux/proc_fs.h>
48 #include <linux/seq_file.h>
49 #include <linux/backlight.h>
50 #include <linux/rfkill.h>
51 #include <linux/input.h>
52 #include <linux/input/sparse-keymap.h>
53 #include <linux/leds.h>
54 #include <linux/slab.h>
55 #include <linux/workqueue.h>
56 #include <linux/i8042.h>
57 #include <linux/acpi.h>
58 #include <asm/uaccess.h>
59
60 MODULE_AUTHOR("John Belmonte");
61 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
62 MODULE_LICENSE("GPL");
63
64 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
65
66 /* Scan code for Fn key on TOS1900 models */
67 #define TOS1900_FN_SCAN 0x6e
68
69 /* Toshiba ACPI method paths */
70 #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
71
72 /* Toshiba HCI interface definitions
73 *
74 * HCI is Toshiba's "Hardware Control Interface" which is supposed to
75 * be uniform across all their models. Ideally we would just call
76 * dedicated ACPI methods instead of using this primitive interface.
77 * However the ACPI methods seem to be incomplete in some areas (for
78 * example they allow setting, but not reading, the LCD brightness value),
79 * so this is still useful.
80 *
81 * SCI stands for "System Configuration Interface" which aim is to
82 * conceal differences in hardware between different models.
83 */
84
85 #define HCI_WORDS 6
86
87 /* operations */
88 #define HCI_SET 0xff00
89 #define HCI_GET 0xfe00
90 #define SCI_OPEN 0xf100
91 #define SCI_CLOSE 0xf200
92 #define SCI_GET 0xf300
93 #define SCI_SET 0xf400
94
95 /* return codes */
96 #define HCI_SUCCESS 0x0000
97 #define HCI_FAILURE 0x1000
98 #define HCI_NOT_SUPPORTED 0x8000
99 #define HCI_EMPTY 0x8c00
100 #define SCI_OPEN_CLOSE_OK 0x0044
101 #define SCI_ALREADY_OPEN 0x8100
102 #define SCI_NOT_OPENED 0x8200
103 #define SCI_INPUT_DATA_ERROR 0x8300
104 #define SCI_NOT_PRESENT 0x8600
105
106 /* registers */
107 #define HCI_FAN 0x0004
108 #define HCI_TR_BACKLIGHT 0x0005
109 #define HCI_SYSTEM_EVENT 0x0016
110 #define HCI_VIDEO_OUT 0x001c
111 #define HCI_HOTKEY_EVENT 0x001e
112 #define HCI_LCD_BRIGHTNESS 0x002a
113 #define HCI_WIRELESS 0x0056
114 #define HCI_KBD_ILLUMINATION 0x0095
115 #define HCI_ECO_MODE 0x0097
116 #define SCI_ILLUMINATION 0x014e
117 #define SCI_KBD_ILLUM_STATUS 0x015c
118 #define SCI_TOUCHPAD 0x050e
119
120 /* field definitions */
121 #define HCI_HOTKEY_DISABLE 0x0b
122 #define HCI_HOTKEY_ENABLE 0x09
123 #define HCI_LCD_BRIGHTNESS_BITS 3
124 #define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
125 #define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
126 #define HCI_MISC_SHIFT 0x10
127 #define HCI_VIDEO_OUT_LCD 0x1
128 #define HCI_VIDEO_OUT_CRT 0x2
129 #define HCI_VIDEO_OUT_TV 0x4
130 #define HCI_WIRELESS_KILL_SWITCH 0x01
131 #define HCI_WIRELESS_BT_PRESENT 0x0f
132 #define HCI_WIRELESS_BT_ATTACH 0x40
133 #define HCI_WIRELESS_BT_POWER 0x80
134 #define SCI_KBD_MODE_FNZ 0x1
135 #define SCI_KBD_MODE_AUTO 0x2
136
137 struct toshiba_acpi_dev {
138 struct acpi_device *acpi_dev;
139 const char *method_hci;
140 struct rfkill *bt_rfk;
141 struct input_dev *hotkey_dev;
142 struct work_struct hotkey_work;
143 struct backlight_device *backlight_dev;
144 struct led_classdev led_dev;
145 struct led_classdev kbd_led;
146 struct led_classdev eco_led;
147
148 int force_fan;
149 int last_key_event;
150 int key_event_valid;
151 int kbd_mode;
152 int kbd_time;
153
154 unsigned int illumination_supported:1;
155 unsigned int video_supported:1;
156 unsigned int fan_supported:1;
157 unsigned int system_event_supported:1;
158 unsigned int ntfy_supported:1;
159 unsigned int info_supported:1;
160 unsigned int tr_backlight_supported:1;
161 unsigned int kbd_illum_supported:1;
162 unsigned int kbd_led_registered:1;
163 unsigned int touchpad_supported:1;
164 unsigned int eco_supported:1;
165 unsigned int sysfs_created:1;
166
167 struct mutex mutex;
168 };
169
170 static struct toshiba_acpi_dev *toshiba_acpi;
171
172 static const struct acpi_device_id toshiba_device_ids[] = {
173 {"TOS6200", 0},
174 {"TOS6208", 0},
175 {"TOS1900", 0},
176 {"", 0},
177 };
178 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
179
180 static const struct key_entry toshiba_acpi_keymap[] = {
181 { KE_KEY, 0x9e, { KEY_RFKILL } },
182 { KE_KEY, 0x101, { KEY_MUTE } },
183 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
184 { KE_KEY, 0x103, { KEY_ZOOMIN } },
185 { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
186 { KE_KEY, 0x139, { KEY_ZOOMRESET } },
187 { KE_KEY, 0x13b, { KEY_COFFEE } },
188 { KE_KEY, 0x13c, { KEY_BATTERY } },
189 { KE_KEY, 0x13d, { KEY_SLEEP } },
190 { KE_KEY, 0x13e, { KEY_SUSPEND } },
191 { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
192 { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
193 { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
194 { KE_KEY, 0x142, { KEY_WLAN } },
195 { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
196 { KE_KEY, 0x17f, { KEY_FN } },
197 { KE_KEY, 0xb05, { KEY_PROG2 } },
198 { KE_KEY, 0xb06, { KEY_WWW } },
199 { KE_KEY, 0xb07, { KEY_MAIL } },
200 { KE_KEY, 0xb30, { KEY_STOP } },
201 { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
202 { KE_KEY, 0xb32, { KEY_NEXTSONG } },
203 { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
204 { KE_KEY, 0xb5a, { KEY_MEDIA } },
205 { KE_IGNORE, 0x1430, { KEY_RESERVED } },
206 { KE_END, 0 },
207 };
208
209 /* utility
210 */
211
212 static __inline__ void _set_bit(u32 * word, u32 mask, int value)
213 {
214 *word = (*word & ~mask) | (mask * value);
215 }
216
217 /* acpi interface wrappers
218 */
219
220 static int write_acpi_int(const char *methodName, int val)
221 {
222 acpi_status status;
223
224 status = acpi_execute_simple_method(NULL, (char *)methodName, val);
225 return (status == AE_OK) ? 0 : -EIO;
226 }
227
228 /* Perform a raw HCI call. Here we don't care about input or output buffer
229 * format.
230 */
231 static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
232 const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
233 {
234 struct acpi_object_list params;
235 union acpi_object in_objs[HCI_WORDS];
236 struct acpi_buffer results;
237 union acpi_object out_objs[HCI_WORDS + 1];
238 acpi_status status;
239 int i;
240
241 params.count = HCI_WORDS;
242 params.pointer = in_objs;
243 for (i = 0; i < HCI_WORDS; ++i) {
244 in_objs[i].type = ACPI_TYPE_INTEGER;
245 in_objs[i].integer.value = in[i];
246 }
247
248 results.length = sizeof(out_objs);
249 results.pointer = out_objs;
250
251 status = acpi_evaluate_object(dev->acpi_dev->handle,
252 (char *)dev->method_hci, &params,
253 &results);
254 if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
255 for (i = 0; i < out_objs->package.count; ++i) {
256 out[i] = out_objs->package.elements[i].integer.value;
257 }
258 }
259
260 return status;
261 }
262
263 /* common hci tasks (get or set one or two value)
264 *
265 * In addition to the ACPI status, the HCI system returns a result which
266 * may be useful (such as "not supported").
267 */
268
269 static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
270 u32 in1, u32 *result)
271 {
272 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
273 u32 out[HCI_WORDS];
274 acpi_status status = hci_raw(dev, in, out);
275 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
276 return status;
277 }
278
279 static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
280 u32 *out1, u32 *result)
281 {
282 u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
283 u32 out[HCI_WORDS];
284 acpi_status status = hci_raw(dev, in, out);
285 *out1 = out[2];
286 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
287 return status;
288 }
289
290 static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
291 u32 in1, u32 in2, u32 *result)
292 {
293 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
294 u32 out[HCI_WORDS];
295 acpi_status status = hci_raw(dev, in, out);
296 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
297 return status;
298 }
299
300 static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
301 u32 *out1, u32 *out2, u32 *result)
302 {
303 u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
304 u32 out[HCI_WORDS];
305 acpi_status status = hci_raw(dev, in, out);
306 *out1 = out[2];
307 *out2 = out[3];
308 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
309 return status;
310 }
311
312 /* common sci tasks
313 */
314
315 static int sci_open(struct toshiba_acpi_dev *dev)
316 {
317 u32 in[HCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
318 u32 out[HCI_WORDS];
319 acpi_status status;
320
321 status = hci_raw(dev, in, out);
322 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
323 pr_err("ACPI call to open SCI failed\n");
324 return 0;
325 }
326
327 if (out[0] == SCI_OPEN_CLOSE_OK) {
328 return 1;
329 } else if (out[0] == SCI_ALREADY_OPEN) {
330 pr_info("Toshiba SCI already opened\n");
331 return 1;
332 } else if (out[0] == SCI_NOT_PRESENT) {
333 pr_info("Toshiba SCI is not present\n");
334 }
335
336 return 0;
337 }
338
339 static void sci_close(struct toshiba_acpi_dev *dev)
340 {
341 u32 in[HCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
342 u32 out[HCI_WORDS];
343 acpi_status status;
344
345 status = hci_raw(dev, in, out);
346 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
347 pr_err("ACPI call to close SCI failed\n");
348 return;
349 }
350
351 if (out[0] == SCI_OPEN_CLOSE_OK)
352 return;
353 else if (out[0] == SCI_NOT_OPENED)
354 pr_info("Toshiba SCI not opened\n");
355 else if (out[0] == SCI_NOT_PRESENT)
356 pr_info("Toshiba SCI is not present\n");
357 }
358
359 static acpi_status sci_read(struct toshiba_acpi_dev *dev, u32 reg,
360 u32 *out1, u32 *result)
361 {
362 u32 in[HCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
363 u32 out[HCI_WORDS];
364 acpi_status status = hci_raw(dev, in, out);
365 *out1 = out[2];
366 *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
367 return status;
368 }
369
370 static acpi_status sci_write(struct toshiba_acpi_dev *dev, u32 reg,
371 u32 in1, u32 *result)
372 {
373 u32 in[HCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
374 u32 out[HCI_WORDS];
375 acpi_status status = hci_raw(dev, in, out);
376 *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
377 return status;
378 }
379
380 /* Illumination support */
381 static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
382 {
383 u32 in[HCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
384 u32 out[HCI_WORDS];
385 acpi_status status;
386
387 if (!sci_open(dev))
388 return 0;
389
390 status = hci_raw(dev, in, out);
391 sci_close(dev);
392 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
393 pr_err("ACPI call to query Illumination support failed\n");
394 return 0;
395 } else if (out[0] == HCI_NOT_SUPPORTED || out[1] != 1) {
396 pr_info("Illumination device not available\n");
397 return 0;
398 }
399
400 return 1;
401 }
402
403 static void toshiba_illumination_set(struct led_classdev *cdev,
404 enum led_brightness brightness)
405 {
406 struct toshiba_acpi_dev *dev = container_of(cdev,
407 struct toshiba_acpi_dev, led_dev);
408 u32 state, result;
409 acpi_status status;
410
411 /* First request : initialize communication. */
412 if (!sci_open(dev))
413 return;
414
415 /* Switch the illumination on/off */
416 state = brightness ? 1 : 0;
417 status = sci_write(dev, SCI_ILLUMINATION, state, &result);
418 sci_close(dev);
419 if (ACPI_FAILURE(status)) {
420 pr_err("ACPI call for illumination failed\n");
421 return;
422 } else if (result == HCI_NOT_SUPPORTED) {
423 pr_info("Illumination not supported\n");
424 return;
425 }
426 }
427
428 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
429 {
430 struct toshiba_acpi_dev *dev = container_of(cdev,
431 struct toshiba_acpi_dev, led_dev);
432 u32 state, result;
433 acpi_status status;
434
435 /* First request : initialize communication. */
436 if (!sci_open(dev))
437 return LED_OFF;
438
439 /* Check the illumination */
440 status = sci_read(dev, SCI_ILLUMINATION, &state, &result);
441 sci_close(dev);
442 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
443 pr_err("ACPI call for illumination failed\n");
444 return LED_OFF;
445 } else if (result == HCI_NOT_SUPPORTED) {
446 pr_info("Illumination not supported\n");
447 return LED_OFF;
448 }
449
450 return state ? LED_FULL : LED_OFF;
451 }
452
453 /* KBD Illumination */
454 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
455 {
456 u32 result;
457 acpi_status status;
458
459 if (!sci_open(dev))
460 return -EIO;
461
462 status = sci_write(dev, SCI_KBD_ILLUM_STATUS, time, &result);
463 sci_close(dev);
464 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
465 pr_err("ACPI call to set KBD backlight status failed\n");
466 return -EIO;
467 } else if (result == HCI_NOT_SUPPORTED) {
468 pr_info("Keyboard backlight status not supported\n");
469 return -ENODEV;
470 }
471
472 return 0;
473 }
474
475 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
476 {
477 u32 result;
478 acpi_status status;
479
480 if (!sci_open(dev))
481 return -EIO;
482
483 status = sci_read(dev, SCI_KBD_ILLUM_STATUS, time, &result);
484 sci_close(dev);
485 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
486 pr_err("ACPI call to get KBD backlight status failed\n");
487 return -EIO;
488 } else if (result == HCI_NOT_SUPPORTED) {
489 pr_info("Keyboard backlight status not supported\n");
490 return -ENODEV;
491 }
492
493 return 0;
494 }
495
496 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
497 {
498 struct toshiba_acpi_dev *dev = container_of(cdev,
499 struct toshiba_acpi_dev, kbd_led);
500 u32 state, result;
501 acpi_status status;
502
503 /* Check the keyboard backlight state */
504 status = hci_read1(dev, HCI_KBD_ILLUMINATION, &state, &result);
505 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
506 pr_err("ACPI call to get the keyboard backlight failed\n");
507 return LED_OFF;
508 } else if (result == HCI_NOT_SUPPORTED) {
509 pr_info("Keyboard backlight not supported\n");
510 return LED_OFF;
511 }
512
513 return state ? LED_FULL : LED_OFF;
514 }
515
516 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
517 enum led_brightness brightness)
518 {
519 struct toshiba_acpi_dev *dev = container_of(cdev,
520 struct toshiba_acpi_dev, kbd_led);
521 u32 state, result;
522 acpi_status status;
523
524 /* Set the keyboard backlight state */
525 state = brightness ? 1 : 0;
526 status = hci_write1(dev, HCI_KBD_ILLUMINATION, state, &result);
527 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
528 pr_err("ACPI call to set KBD Illumination mode failed\n");
529 return;
530 } else if (result == HCI_NOT_SUPPORTED) {
531 pr_info("Keyboard backlight not supported\n");
532 return;
533 }
534 }
535
536 /* TouchPad support */
537 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
538 {
539 u32 result;
540 acpi_status status;
541
542 if (!sci_open(dev))
543 return -EIO;
544
545 status = sci_write(dev, SCI_TOUCHPAD, state, &result);
546 sci_close(dev);
547 if (ACPI_FAILURE(status)) {
548 pr_err("ACPI call to set the touchpad failed\n");
549 return -EIO;
550 } else if (result == HCI_NOT_SUPPORTED) {
551 return -ENODEV;
552 }
553
554 return 0;
555 }
556
557 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
558 {
559 u32 result;
560 acpi_status status;
561
562 if (!sci_open(dev))
563 return -EIO;
564
565 status = sci_read(dev, SCI_TOUCHPAD, state, &result);
566 sci_close(dev);
567 if (ACPI_FAILURE(status)) {
568 pr_err("ACPI call to query the touchpad failed\n");
569 return -EIO;
570 } else if (result == HCI_NOT_SUPPORTED) {
571 return -ENODEV;
572 }
573
574 return 0;
575 }
576
577 /* Eco Mode support */
578 static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
579 {
580 acpi_status status;
581 u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
582 u32 out[HCI_WORDS];
583
584 status = hci_raw(dev, in, out);
585 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
586 pr_info("ACPI call to get ECO led failed\n");
587 return 0;
588 }
589
590 return 1;
591 }
592
593 static enum led_brightness toshiba_eco_mode_get_status(struct led_classdev *cdev)
594 {
595 struct toshiba_acpi_dev *dev = container_of(cdev,
596 struct toshiba_acpi_dev, eco_led);
597 u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
598 u32 out[HCI_WORDS];
599 acpi_status status;
600
601 status = hci_raw(dev, in, out);
602 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
603 pr_err("ACPI call to get ECO led failed\n");
604 return LED_OFF;
605 }
606
607 return out[2] ? LED_FULL : LED_OFF;
608 }
609
610 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
611 enum led_brightness brightness)
612 {
613 struct toshiba_acpi_dev *dev = container_of(cdev,
614 struct toshiba_acpi_dev, eco_led);
615 u32 in[HCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
616 u32 out[HCI_WORDS];
617 acpi_status status;
618
619 /* Switch the Eco Mode led on/off */
620 in[2] = (brightness) ? 1 : 0;
621 status = hci_raw(dev, in, out);
622 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
623 pr_err("ACPI call to set ECO led failed\n");
624 return;
625 }
626 }
627
628 /* Bluetooth rfkill handlers */
629
630 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
631 {
632 u32 hci_result;
633 u32 value, value2;
634
635 value = 0;
636 value2 = 0;
637 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
638 if (hci_result == HCI_SUCCESS)
639 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
640
641 return hci_result;
642 }
643
644 static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
645 {
646 u32 hci_result;
647 u32 value, value2;
648
649 value = 0;
650 value2 = 0x0001;
651 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
652
653 *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
654 return hci_result;
655 }
656
657 static int bt_rfkill_set_block(void *data, bool blocked)
658 {
659 struct toshiba_acpi_dev *dev = data;
660 u32 result1, result2;
661 u32 value;
662 int err;
663 bool radio_state;
664
665 value = (blocked == false);
666
667 mutex_lock(&dev->mutex);
668 if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
669 err = -EIO;
670 goto out;
671 }
672
673 if (!radio_state) {
674 err = 0;
675 goto out;
676 }
677
678 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
679 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
680
681 if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
682 err = -EIO;
683 else
684 err = 0;
685 out:
686 mutex_unlock(&dev->mutex);
687 return err;
688 }
689
690 static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
691 {
692 bool new_rfk_state;
693 bool value;
694 u32 hci_result;
695 struct toshiba_acpi_dev *dev = data;
696
697 mutex_lock(&dev->mutex);
698
699 hci_result = hci_get_radio_state(dev, &value);
700 if (hci_result != HCI_SUCCESS) {
701 /* Can't do anything useful */
702 mutex_unlock(&dev->mutex);
703 return;
704 }
705
706 new_rfk_state = value;
707
708 mutex_unlock(&dev->mutex);
709
710 if (rfkill_set_hw_state(rfkill, !new_rfk_state))
711 bt_rfkill_set_block(data, true);
712 }
713
714 static const struct rfkill_ops toshiba_rfk_ops = {
715 .set_block = bt_rfkill_set_block,
716 .poll = bt_rfkill_poll,
717 };
718
719 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
720 {
721 u32 hci_result;
722 u32 status;
723
724 hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
725 *enabled = !status;
726 return hci_result == HCI_SUCCESS ? 0 : -EIO;
727 }
728
729 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
730 {
731 u32 hci_result;
732 u32 value = !enable;
733
734 hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
735 return hci_result == HCI_SUCCESS ? 0 : -EIO;
736 }
737
738 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
739
740 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
741 {
742 u32 hci_result;
743 u32 value;
744 int brightness = 0;
745
746 if (dev->tr_backlight_supported) {
747 bool enabled;
748 int ret = get_tr_backlight_status(dev, &enabled);
749 if (ret)
750 return ret;
751 if (enabled)
752 return 0;
753 brightness++;
754 }
755
756 hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
757 if (hci_result == HCI_SUCCESS)
758 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
759
760 return -EIO;
761 }
762
763 static int get_lcd_brightness(struct backlight_device *bd)
764 {
765 struct toshiba_acpi_dev *dev = bl_get_data(bd);
766 return __get_lcd_brightness(dev);
767 }
768
769 static int lcd_proc_show(struct seq_file *m, void *v)
770 {
771 struct toshiba_acpi_dev *dev = m->private;
772 int value;
773 int levels;
774
775 if (!dev->backlight_dev)
776 return -ENODEV;
777
778 levels = dev->backlight_dev->props.max_brightness + 1;
779 value = get_lcd_brightness(dev->backlight_dev);
780 if (value >= 0) {
781 seq_printf(m, "brightness: %d\n", value);
782 seq_printf(m, "brightness_levels: %d\n", levels);
783 return 0;
784 }
785
786 pr_err("Error reading LCD brightness\n");
787 return -EIO;
788 }
789
790 static int lcd_proc_open(struct inode *inode, struct file *file)
791 {
792 return single_open(file, lcd_proc_show, PDE_DATA(inode));
793 }
794
795 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
796 {
797 u32 hci_result;
798
799 if (dev->tr_backlight_supported) {
800 bool enable = !value;
801 int ret = set_tr_backlight_status(dev, enable);
802 if (ret)
803 return ret;
804 if (value)
805 value--;
806 }
807
808 value = value << HCI_LCD_BRIGHTNESS_SHIFT;
809 hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
810 return hci_result == HCI_SUCCESS ? 0 : -EIO;
811 }
812
813 static int set_lcd_status(struct backlight_device *bd)
814 {
815 struct toshiba_acpi_dev *dev = bl_get_data(bd);
816 return set_lcd_brightness(dev, bd->props.brightness);
817 }
818
819 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
820 size_t count, loff_t *pos)
821 {
822 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
823 char cmd[42];
824 size_t len;
825 int value;
826 int ret;
827 int levels = dev->backlight_dev->props.max_brightness + 1;
828
829 len = min(count, sizeof(cmd) - 1);
830 if (copy_from_user(cmd, buf, len))
831 return -EFAULT;
832 cmd[len] = '\0';
833
834 if (sscanf(cmd, " brightness : %i", &value) == 1 &&
835 value >= 0 && value < levels) {
836 ret = set_lcd_brightness(dev, value);
837 if (ret == 0)
838 ret = count;
839 } else {
840 ret = -EINVAL;
841 }
842 return ret;
843 }
844
845 static const struct file_operations lcd_proc_fops = {
846 .owner = THIS_MODULE,
847 .open = lcd_proc_open,
848 .read = seq_read,
849 .llseek = seq_lseek,
850 .release = single_release,
851 .write = lcd_proc_write,
852 };
853
854 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
855 {
856 u32 hci_result;
857
858 hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
859 return hci_result == HCI_SUCCESS ? 0 : -EIO;
860 }
861
862 static int video_proc_show(struct seq_file *m, void *v)
863 {
864 struct toshiba_acpi_dev *dev = m->private;
865 u32 value;
866 int ret;
867
868 ret = get_video_status(dev, &value);
869 if (!ret) {
870 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
871 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
872 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
873 seq_printf(m, "lcd_out: %d\n", is_lcd);
874 seq_printf(m, "crt_out: %d\n", is_crt);
875 seq_printf(m, "tv_out: %d\n", is_tv);
876 }
877
878 return ret;
879 }
880
881 static int video_proc_open(struct inode *inode, struct file *file)
882 {
883 return single_open(file, video_proc_show, PDE_DATA(inode));
884 }
885
886 static ssize_t video_proc_write(struct file *file, const char __user *buf,
887 size_t count, loff_t *pos)
888 {
889 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
890 char *cmd, *buffer;
891 int ret;
892 int value;
893 int remain = count;
894 int lcd_out = -1;
895 int crt_out = -1;
896 int tv_out = -1;
897 u32 video_out;
898
899 cmd = kmalloc(count + 1, GFP_KERNEL);
900 if (!cmd)
901 return -ENOMEM;
902 if (copy_from_user(cmd, buf, count)) {
903 kfree(cmd);
904 return -EFAULT;
905 }
906 cmd[count] = '\0';
907
908 buffer = cmd;
909
910 /* scan expression. Multiple expressions may be delimited with ;
911 *
912 * NOTE: to keep scanning simple, invalid fields are ignored
913 */
914 while (remain) {
915 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
916 lcd_out = value & 1;
917 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
918 crt_out = value & 1;
919 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
920 tv_out = value & 1;
921 /* advance to one character past the next ; */
922 do {
923 ++buffer;
924 --remain;
925 }
926 while (remain && *(buffer - 1) != ';');
927 }
928
929 kfree(cmd);
930
931 ret = get_video_status(dev, &video_out);
932 if (!ret) {
933 unsigned int new_video_out = video_out;
934 if (lcd_out != -1)
935 _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
936 if (crt_out != -1)
937 _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
938 if (tv_out != -1)
939 _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
940 /* To avoid unnecessary video disruption, only write the new
941 * video setting if something changed. */
942 if (new_video_out != video_out)
943 ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
944 }
945
946 return ret ? ret : count;
947 }
948
949 static const struct file_operations video_proc_fops = {
950 .owner = THIS_MODULE,
951 .open = video_proc_open,
952 .read = seq_read,
953 .llseek = seq_lseek,
954 .release = single_release,
955 .write = video_proc_write,
956 };
957
958 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
959 {
960 u32 hci_result;
961
962 hci_read1(dev, HCI_FAN, status, &hci_result);
963 return hci_result == HCI_SUCCESS ? 0 : -EIO;
964 }
965
966 static int fan_proc_show(struct seq_file *m, void *v)
967 {
968 struct toshiba_acpi_dev *dev = m->private;
969 int ret;
970 u32 value;
971
972 ret = get_fan_status(dev, &value);
973 if (!ret) {
974 seq_printf(m, "running: %d\n", (value > 0));
975 seq_printf(m, "force_on: %d\n", dev->force_fan);
976 }
977
978 return ret;
979 }
980
981 static int fan_proc_open(struct inode *inode, struct file *file)
982 {
983 return single_open(file, fan_proc_show, PDE_DATA(inode));
984 }
985
986 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
987 size_t count, loff_t *pos)
988 {
989 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
990 char cmd[42];
991 size_t len;
992 int value;
993 u32 hci_result;
994
995 len = min(count, sizeof(cmd) - 1);
996 if (copy_from_user(cmd, buf, len))
997 return -EFAULT;
998 cmd[len] = '\0';
999
1000 if (sscanf(cmd, " force_on : %i", &value) == 1 &&
1001 value >= 0 && value <= 1) {
1002 hci_write1(dev, HCI_FAN, value, &hci_result);
1003 if (hci_result != HCI_SUCCESS)
1004 return -EIO;
1005 else
1006 dev->force_fan = value;
1007 } else {
1008 return -EINVAL;
1009 }
1010
1011 return count;
1012 }
1013
1014 static const struct file_operations fan_proc_fops = {
1015 .owner = THIS_MODULE,
1016 .open = fan_proc_open,
1017 .read = seq_read,
1018 .llseek = seq_lseek,
1019 .release = single_release,
1020 .write = fan_proc_write,
1021 };
1022
1023 static int keys_proc_show(struct seq_file *m, void *v)
1024 {
1025 struct toshiba_acpi_dev *dev = m->private;
1026 u32 hci_result;
1027 u32 value;
1028
1029 if (!dev->key_event_valid && dev->system_event_supported) {
1030 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1031 if (hci_result == HCI_SUCCESS) {
1032 dev->key_event_valid = 1;
1033 dev->last_key_event = value;
1034 } else if (hci_result == HCI_EMPTY) {
1035 /* better luck next time */
1036 } else if (hci_result == HCI_NOT_SUPPORTED) {
1037 /* This is a workaround for an unresolved issue on
1038 * some machines where system events sporadically
1039 * become disabled. */
1040 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1041 pr_notice("Re-enabled hotkeys\n");
1042 } else {
1043 pr_err("Error reading hotkey status\n");
1044 return -EIO;
1045 }
1046 }
1047
1048 seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
1049 seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
1050 return 0;
1051 }
1052
1053 static int keys_proc_open(struct inode *inode, struct file *file)
1054 {
1055 return single_open(file, keys_proc_show, PDE_DATA(inode));
1056 }
1057
1058 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1059 size_t count, loff_t *pos)
1060 {
1061 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1062 char cmd[42];
1063 size_t len;
1064 int value;
1065
1066 len = min(count, sizeof(cmd) - 1);
1067 if (copy_from_user(cmd, buf, len))
1068 return -EFAULT;
1069 cmd[len] = '\0';
1070
1071 if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
1072 dev->key_event_valid = 0;
1073 } else {
1074 return -EINVAL;
1075 }
1076
1077 return count;
1078 }
1079
1080 static const struct file_operations keys_proc_fops = {
1081 .owner = THIS_MODULE,
1082 .open = keys_proc_open,
1083 .read = seq_read,
1084 .llseek = seq_lseek,
1085 .release = single_release,
1086 .write = keys_proc_write,
1087 };
1088
1089 static int version_proc_show(struct seq_file *m, void *v)
1090 {
1091 seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
1092 seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
1093 return 0;
1094 }
1095
1096 static int version_proc_open(struct inode *inode, struct file *file)
1097 {
1098 return single_open(file, version_proc_show, PDE_DATA(inode));
1099 }
1100
1101 static const struct file_operations version_proc_fops = {
1102 .owner = THIS_MODULE,
1103 .open = version_proc_open,
1104 .read = seq_read,
1105 .llseek = seq_lseek,
1106 .release = single_release,
1107 };
1108
1109 /* proc and module init
1110 */
1111
1112 #define PROC_TOSHIBA "toshiba"
1113
1114 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1115 {
1116 if (dev->backlight_dev)
1117 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1118 &lcd_proc_fops, dev);
1119 if (dev->video_supported)
1120 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1121 &video_proc_fops, dev);
1122 if (dev->fan_supported)
1123 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1124 &fan_proc_fops, dev);
1125 if (dev->hotkey_dev)
1126 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1127 &keys_proc_fops, dev);
1128 proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1129 &version_proc_fops, dev);
1130 }
1131
1132 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1133 {
1134 if (dev->backlight_dev)
1135 remove_proc_entry("lcd", toshiba_proc_dir);
1136 if (dev->video_supported)
1137 remove_proc_entry("video", toshiba_proc_dir);
1138 if (dev->fan_supported)
1139 remove_proc_entry("fan", toshiba_proc_dir);
1140 if (dev->hotkey_dev)
1141 remove_proc_entry("keys", toshiba_proc_dir);
1142 remove_proc_entry("version", toshiba_proc_dir);
1143 }
1144
1145 static const struct backlight_ops toshiba_backlight_data = {
1146 .options = BL_CORE_SUSPENDRESUME,
1147 .get_brightness = get_lcd_brightness,
1148 .update_status = set_lcd_status,
1149 };
1150
1151 /*
1152 * Sysfs files
1153 */
1154
1155 static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
1156 struct device_attribute *attr,
1157 const char *buf, size_t count)
1158 {
1159 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1160 int mode = -1;
1161 int time = -1;
1162
1163 if (sscanf(buf, "%i", &mode) != 1 && (mode != 2 || mode != 1))
1164 return -EINVAL;
1165
1166 /* Set the Keyboard Backlight Mode where:
1167 * Mode - Auto (2) | FN-Z (1)
1168 * Auto - KBD backlight turns off automatically in given time
1169 * FN-Z - KBD backlight "toggles" when hotkey pressed
1170 */
1171 if (mode != -1 && toshiba->kbd_mode != mode) {
1172 time = toshiba->kbd_time << HCI_MISC_SHIFT;
1173 time = time + toshiba->kbd_mode;
1174 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1175 return -EIO;
1176 toshiba->kbd_mode = mode;
1177 }
1178
1179 return count;
1180 }
1181
1182 static ssize_t toshiba_kbd_bl_mode_show(struct device *dev,
1183 struct device_attribute *attr,
1184 char *buf)
1185 {
1186 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1187 u32 time;
1188
1189 if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1190 return -EIO;
1191
1192 return sprintf(buf, "%i\n", time & 0x07);
1193 }
1194
1195 static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev,
1196 struct device_attribute *attr,
1197 const char *buf, size_t count)
1198 {
1199 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1200 int time = -1;
1201
1202 if (sscanf(buf, "%i", &time) != 1 && (time < 0 || time > 60))
1203 return -EINVAL;
1204
1205 /* Set the Keyboard Backlight Timeout: 0-60 seconds */
1206 if (time != -1 && toshiba->kbd_time != time) {
1207 time = time << HCI_MISC_SHIFT;
1208 time = (toshiba->kbd_mode == SCI_KBD_MODE_AUTO) ?
1209 time + 1 : time + 2;
1210 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1211 return -EIO;
1212 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1213 }
1214
1215 return count;
1216 }
1217
1218 static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev,
1219 struct device_attribute *attr,
1220 char *buf)
1221 {
1222 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1223 u32 time;
1224
1225 if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1226 return -EIO;
1227
1228 return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1229 }
1230
1231 static ssize_t toshiba_touchpad_store(struct device *dev,
1232 struct device_attribute *attr,
1233 const char *buf, size_t count)
1234 {
1235 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1236 int state;
1237
1238 /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1239 if (sscanf(buf, "%i", &state) == 1 && (state == 0 || state == 1)) {
1240 if (toshiba_touchpad_set(toshiba, state) < 0)
1241 return -EIO;
1242 }
1243
1244 return count;
1245 }
1246
1247 static ssize_t toshiba_touchpad_show(struct device *dev,
1248 struct device_attribute *attr, char *buf)
1249 {
1250 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1251 u32 state;
1252 int ret;
1253
1254 ret = toshiba_touchpad_get(toshiba, &state);
1255 if (ret < 0)
1256 return ret;
1257
1258 return sprintf(buf, "%i\n", state);
1259 }
1260
1261 static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR,
1262 toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store);
1263 static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR,
1264 toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store);
1265 static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR,
1266 toshiba_touchpad_show, toshiba_touchpad_store);
1267
1268 static struct attribute *toshiba_attributes[] = {
1269 &dev_attr_kbd_backlight_mode.attr,
1270 &dev_attr_kbd_backlight_timeout.attr,
1271 &dev_attr_touchpad.attr,
1272 NULL,
1273 };
1274
1275 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
1276 struct attribute *attr, int idx)
1277 {
1278 struct device *dev = container_of(kobj, struct device, kobj);
1279 struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
1280 bool exists = true;
1281
1282 if (attr == &dev_attr_kbd_backlight_mode.attr)
1283 exists = (drv->kbd_illum_supported) ? true : false;
1284 else if (attr == &dev_attr_kbd_backlight_timeout.attr)
1285 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
1286 else if (attr == &dev_attr_touchpad.attr)
1287 exists = (drv->touchpad_supported) ? true : false;
1288
1289 return exists ? attr->mode : 0;
1290 }
1291
1292 static struct attribute_group toshiba_attr_group = {
1293 .is_visible = toshiba_sysfs_is_visible,
1294 .attrs = toshiba_attributes,
1295 };
1296
1297 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
1298 struct serio *port)
1299 {
1300 if (str & 0x20)
1301 return false;
1302
1303 if (unlikely(data == 0xe0))
1304 return false;
1305
1306 if ((data & 0x7f) == TOS1900_FN_SCAN) {
1307 schedule_work(&toshiba_acpi->hotkey_work);
1308 return true;
1309 }
1310
1311 return false;
1312 }
1313
1314 static void toshiba_acpi_hotkey_work(struct work_struct *work)
1315 {
1316 acpi_handle ec_handle = ec_get_handle();
1317 acpi_status status;
1318
1319 if (!ec_handle)
1320 return;
1321
1322 status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
1323 if (ACPI_FAILURE(status))
1324 pr_err("ACPI NTFY method execution failed\n");
1325 }
1326
1327 /*
1328 * Returns hotkey scancode, or < 0 on failure.
1329 */
1330 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
1331 {
1332 unsigned long long value;
1333 acpi_status status;
1334
1335 status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
1336 NULL, &value);
1337 if (ACPI_FAILURE(status)) {
1338 pr_err("ACPI INFO method execution failed\n");
1339 return -EIO;
1340 }
1341
1342 return value;
1343 }
1344
1345 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
1346 int scancode)
1347 {
1348 if (scancode == 0x100)
1349 return;
1350
1351 /* act on key press; ignore key release */
1352 if (scancode & 0x80)
1353 return;
1354
1355 if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
1356 pr_info("Unknown key %x\n", scancode);
1357 }
1358
1359 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
1360 {
1361 acpi_status status;
1362 acpi_handle ec_handle;
1363 int error;
1364 u32 hci_result;
1365
1366 dev->hotkey_dev = input_allocate_device();
1367 if (!dev->hotkey_dev)
1368 return -ENOMEM;
1369
1370 dev->hotkey_dev->name = "Toshiba input device";
1371 dev->hotkey_dev->phys = "toshiba_acpi/input0";
1372 dev->hotkey_dev->id.bustype = BUS_HOST;
1373
1374 error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
1375 if (error)
1376 goto err_free_dev;
1377
1378 /*
1379 * For some machines the SCI responsible for providing hotkey
1380 * notification doesn't fire. We can trigger the notification
1381 * whenever the Fn key is pressed using the NTFY method, if
1382 * supported, so if it's present set up an i8042 key filter
1383 * for this purpose.
1384 */
1385 status = AE_ERROR;
1386 ec_handle = ec_get_handle();
1387 if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
1388 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
1389
1390 error = i8042_install_filter(toshiba_acpi_i8042_filter);
1391 if (error) {
1392 pr_err("Error installing key filter\n");
1393 goto err_free_keymap;
1394 }
1395
1396 dev->ntfy_supported = 1;
1397 }
1398
1399 /*
1400 * Determine hotkey query interface. Prefer using the INFO
1401 * method when it is available.
1402 */
1403 if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
1404 dev->info_supported = 1;
1405 else {
1406 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1407 if (hci_result == HCI_SUCCESS)
1408 dev->system_event_supported = 1;
1409 }
1410
1411 if (!dev->info_supported && !dev->system_event_supported) {
1412 pr_warn("No hotkey query interface found\n");
1413 goto err_remove_filter;
1414 }
1415
1416 status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
1417 if (ACPI_FAILURE(status)) {
1418 pr_info("Unable to enable hotkeys\n");
1419 error = -ENODEV;
1420 goto err_remove_filter;
1421 }
1422
1423 error = input_register_device(dev->hotkey_dev);
1424 if (error) {
1425 pr_info("Unable to register input device\n");
1426 goto err_remove_filter;
1427 }
1428
1429 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
1430 return 0;
1431
1432 err_remove_filter:
1433 if (dev->ntfy_supported)
1434 i8042_remove_filter(toshiba_acpi_i8042_filter);
1435 err_free_keymap:
1436 sparse_keymap_free(dev->hotkey_dev);
1437 err_free_dev:
1438 input_free_device(dev->hotkey_dev);
1439 dev->hotkey_dev = NULL;
1440 return error;
1441 }
1442
1443 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
1444 {
1445 struct backlight_properties props;
1446 int brightness;
1447 int ret;
1448 bool enabled;
1449
1450 /*
1451 * Some machines don't support the backlight methods at all, and
1452 * others support it read-only. Either of these is pretty useless,
1453 * so only register the backlight device if the backlight method
1454 * supports both reads and writes.
1455 */
1456 brightness = __get_lcd_brightness(dev);
1457 if (brightness < 0)
1458 return 0;
1459 ret = set_lcd_brightness(dev, brightness);
1460 if (ret) {
1461 pr_debug("Backlight method is read-only, disabling backlight support\n");
1462 return 0;
1463 }
1464
1465 /* Determine whether or not BIOS supports transflective backlight */
1466 ret = get_tr_backlight_status(dev, &enabled);
1467 dev->tr_backlight_supported = !ret;
1468
1469 memset(&props, 0, sizeof(props));
1470 props.type = BACKLIGHT_PLATFORM;
1471 props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1472
1473 /* adding an extra level and having 0 change to transflective mode */
1474 if (dev->tr_backlight_supported)
1475 props.max_brightness++;
1476
1477 dev->backlight_dev = backlight_device_register("toshiba",
1478 &dev->acpi_dev->dev,
1479 dev,
1480 &toshiba_backlight_data,
1481 &props);
1482 if (IS_ERR(dev->backlight_dev)) {
1483 ret = PTR_ERR(dev->backlight_dev);
1484 pr_err("Could not register toshiba backlight device\n");
1485 dev->backlight_dev = NULL;
1486 return ret;
1487 }
1488
1489 dev->backlight_dev->props.brightness = brightness;
1490 return 0;
1491 }
1492
1493 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
1494 {
1495 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1496
1497 remove_toshiba_proc_entries(dev);
1498
1499 if (dev->sysfs_created)
1500 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
1501 &toshiba_attr_group);
1502
1503 if (dev->ntfy_supported) {
1504 i8042_remove_filter(toshiba_acpi_i8042_filter);
1505 cancel_work_sync(&dev->hotkey_work);
1506 }
1507
1508 if (dev->hotkey_dev) {
1509 input_unregister_device(dev->hotkey_dev);
1510 sparse_keymap_free(dev->hotkey_dev);
1511 }
1512
1513 if (dev->bt_rfk) {
1514 rfkill_unregister(dev->bt_rfk);
1515 rfkill_destroy(dev->bt_rfk);
1516 }
1517
1518 if (dev->backlight_dev)
1519 backlight_device_unregister(dev->backlight_dev);
1520
1521 if (dev->illumination_supported)
1522 led_classdev_unregister(&dev->led_dev);
1523
1524 if (dev->kbd_led_registered)
1525 led_classdev_unregister(&dev->kbd_led);
1526
1527 if (dev->eco_supported)
1528 led_classdev_unregister(&dev->eco_led);
1529
1530 if (toshiba_acpi)
1531 toshiba_acpi = NULL;
1532
1533 kfree(dev);
1534
1535 return 0;
1536 }
1537
1538 static const char *find_hci_method(acpi_handle handle)
1539 {
1540 if (acpi_has_method(handle, "GHCI"))
1541 return "GHCI";
1542
1543 if (acpi_has_method(handle, "SPFC"))
1544 return "SPFC";
1545
1546 return NULL;
1547 }
1548
1549 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
1550 {
1551 struct toshiba_acpi_dev *dev;
1552 const char *hci_method;
1553 u32 dummy;
1554 bool bt_present;
1555 int ret = 0;
1556
1557 if (toshiba_acpi)
1558 return -EBUSY;
1559
1560 pr_info("Toshiba Laptop ACPI Extras version %s\n",
1561 TOSHIBA_ACPI_VERSION);
1562
1563 hci_method = find_hci_method(acpi_dev->handle);
1564 if (!hci_method) {
1565 pr_err("HCI interface not found\n");
1566 return -ENODEV;
1567 }
1568
1569 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1570 if (!dev)
1571 return -ENOMEM;
1572 dev->acpi_dev = acpi_dev;
1573 dev->method_hci = hci_method;
1574 acpi_dev->driver_data = dev;
1575 dev_set_drvdata(&acpi_dev->dev, dev);
1576
1577 if (toshiba_acpi_setup_keyboard(dev))
1578 pr_info("Unable to activate hotkeys\n");
1579
1580 mutex_init(&dev->mutex);
1581
1582 ret = toshiba_acpi_setup_backlight(dev);
1583 if (ret)
1584 goto error;
1585
1586 /* Register rfkill switch for Bluetooth */
1587 if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
1588 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
1589 &acpi_dev->dev,
1590 RFKILL_TYPE_BLUETOOTH,
1591 &toshiba_rfk_ops,
1592 dev);
1593 if (!dev->bt_rfk) {
1594 pr_err("unable to allocate rfkill device\n");
1595 ret = -ENOMEM;
1596 goto error;
1597 }
1598
1599 ret = rfkill_register(dev->bt_rfk);
1600 if (ret) {
1601 pr_err("unable to register rfkill device\n");
1602 rfkill_destroy(dev->bt_rfk);
1603 goto error;
1604 }
1605 }
1606
1607 if (toshiba_illumination_available(dev)) {
1608 dev->led_dev.name = "toshiba::illumination";
1609 dev->led_dev.max_brightness = 1;
1610 dev->led_dev.brightness_set = toshiba_illumination_set;
1611 dev->led_dev.brightness_get = toshiba_illumination_get;
1612 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1613 dev->illumination_supported = 1;
1614 }
1615
1616 if (toshiba_eco_mode_available(dev)) {
1617 dev->eco_led.name = "toshiba::eco_mode";
1618 dev->eco_led.max_brightness = 1;
1619 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
1620 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
1621 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
1622 dev->eco_supported = 1;
1623 }
1624
1625 ret = toshiba_kbd_illum_status_get(dev, &dummy);
1626 if (!ret) {
1627 dev->kbd_time = dummy >> HCI_MISC_SHIFT;
1628 dev->kbd_mode = dummy & 0x07;
1629 }
1630 dev->kbd_illum_supported = !ret;
1631 /*
1632 * Only register the LED if KBD illumination is supported
1633 * and the keyboard backlight operation mode is set to FN-Z
1634 */
1635 if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
1636 dev->kbd_led.name = "toshiba::kbd_backlight";
1637 dev->kbd_led.max_brightness = 1;
1638 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
1639 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
1640 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
1641 dev->kbd_led_registered = 1;
1642 }
1643
1644 ret = toshiba_touchpad_get(dev, &dummy);
1645 dev->touchpad_supported = !ret;
1646
1647 /* Determine whether or not BIOS supports fan and video interfaces */
1648
1649 ret = get_video_status(dev, &dummy);
1650 dev->video_supported = !ret;
1651
1652 ret = get_fan_status(dev, &dummy);
1653 dev->fan_supported = !ret;
1654
1655 ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
1656 &toshiba_attr_group);
1657 if (ret) {
1658 dev->sysfs_created = 0;
1659 goto error;
1660 }
1661 dev->sysfs_created = !ret;
1662
1663 create_toshiba_proc_entries(dev);
1664
1665 toshiba_acpi = dev;
1666
1667 return 0;
1668
1669 error:
1670 toshiba_acpi_remove(acpi_dev);
1671 return ret;
1672 }
1673
1674 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
1675 {
1676 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1677 u32 hci_result, value;
1678 int retries = 3;
1679 int scancode;
1680
1681 if (event != 0x80)
1682 return;
1683
1684 if (dev->info_supported) {
1685 scancode = toshiba_acpi_query_hotkey(dev);
1686 if (scancode < 0)
1687 pr_err("Failed to query hotkey event\n");
1688 else if (scancode != 0)
1689 toshiba_acpi_report_hotkey(dev, scancode);
1690 } else if (dev->system_event_supported) {
1691 do {
1692 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1693 switch (hci_result) {
1694 case HCI_SUCCESS:
1695 toshiba_acpi_report_hotkey(dev, (int)value);
1696 break;
1697 case HCI_NOT_SUPPORTED:
1698 /*
1699 * This is a workaround for an unresolved
1700 * issue on some machines where system events
1701 * sporadically become disabled.
1702 */
1703 hci_write1(dev, HCI_SYSTEM_EVENT, 1,
1704 &hci_result);
1705 pr_notice("Re-enabled hotkeys\n");
1706 /* fall through */
1707 default:
1708 retries--;
1709 break;
1710 }
1711 } while (retries && hci_result != HCI_EMPTY);
1712 }
1713 }
1714
1715 #ifdef CONFIG_PM_SLEEP
1716 static int toshiba_acpi_suspend(struct device *device)
1717 {
1718 struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1719 u32 result;
1720
1721 if (dev->hotkey_dev)
1722 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
1723
1724 return 0;
1725 }
1726
1727 static int toshiba_acpi_resume(struct device *device)
1728 {
1729 struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1730 u32 result;
1731
1732 if (dev->hotkey_dev)
1733 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
1734
1735 return 0;
1736 }
1737 #endif
1738
1739 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
1740 toshiba_acpi_suspend, toshiba_acpi_resume);
1741
1742 static struct acpi_driver toshiba_acpi_driver = {
1743 .name = "Toshiba ACPI driver",
1744 .owner = THIS_MODULE,
1745 .ids = toshiba_device_ids,
1746 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1747 .ops = {
1748 .add = toshiba_acpi_add,
1749 .remove = toshiba_acpi_remove,
1750 .notify = toshiba_acpi_notify,
1751 },
1752 .drv.pm = &toshiba_acpi_pm,
1753 };
1754
1755 static int __init toshiba_acpi_init(void)
1756 {
1757 int ret;
1758
1759 /*
1760 * Machines with this WMI guid aren't supported due to bugs in
1761 * their AML. This check relies on wmi initializing before
1762 * toshiba_acpi to guarantee guids have been identified.
1763 */
1764 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
1765 return -ENODEV;
1766
1767 toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1768 if (!toshiba_proc_dir) {
1769 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
1770 return -ENODEV;
1771 }
1772
1773 ret = acpi_bus_register_driver(&toshiba_acpi_driver);
1774 if (ret) {
1775 pr_err("Failed to register ACPI driver: %d\n", ret);
1776 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1777 }
1778
1779 return ret;
1780 }
1781
1782 static void __exit toshiba_acpi_exit(void)
1783 {
1784 acpi_bus_unregister_driver(&toshiba_acpi_driver);
1785 if (toshiba_proc_dir)
1786 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1787 }
1788
1789 module_init(toshiba_acpi_init);
1790 module_exit(toshiba_acpi_exit);
Linux kernel - Deliverables
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