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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
58#include <asm/uaccess.h>
59
60#include <acpi/acpi_drivers.h>
61
62MODULE_AUTHOR("John Belmonte");
63MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
64MODULE_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
84#define HCI_WORDS 6
85
86/* operations */
87#define HCI_SET 0xff00
88#define HCI_GET 0xfe00
89
90/* return codes */
91#define HCI_SUCCESS 0x0000
92#define HCI_FAILURE 0x1000
93#define HCI_NOT_SUPPORTED 0x8000
94#define HCI_EMPTY 0x8c00
95
96/* registers */
97#define HCI_FAN 0x0004
98#define HCI_TR_BACKLIGHT 0x0005
99#define HCI_SYSTEM_EVENT 0x0016
100#define HCI_VIDEO_OUT 0x001c
101#define HCI_HOTKEY_EVENT 0x001e
102#define HCI_LCD_BRIGHTNESS 0x002a
103#define HCI_WIRELESS 0x0056
104
105/* field definitions */
106#define HCI_HOTKEY_DISABLE 0x0b
107#define HCI_HOTKEY_ENABLE 0x09
108#define HCI_LCD_BRIGHTNESS_BITS 3
109#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
110#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
111#define HCI_VIDEO_OUT_LCD 0x1
112#define HCI_VIDEO_OUT_CRT 0x2
113#define HCI_VIDEO_OUT_TV 0x4
114#define HCI_WIRELESS_KILL_SWITCH 0x01
115#define HCI_WIRELESS_BT_PRESENT 0x0f
116#define HCI_WIRELESS_BT_ATTACH 0x40
117#define HCI_WIRELESS_BT_POWER 0x80
118
119struct toshiba_acpi_dev {
120 struct acpi_device *acpi_dev;
121 const char *method_hci;
122 struct rfkill *bt_rfk;
123 struct input_dev *hotkey_dev;
124 struct work_struct hotkey_work;
125 struct backlight_device *backlight_dev;
126 struct led_classdev led_dev;
127
128 int force_fan;
129 int last_key_event;
130 int key_event_valid;
131
132 unsigned int illumination_supported:1;
133 unsigned int video_supported:1;
134 unsigned int fan_supported:1;
135 unsigned int system_event_supported:1;
136 unsigned int ntfy_supported:1;
137 unsigned int info_supported:1;
138 unsigned int tr_backlight_supported:1;
139
140 struct mutex mutex;
141};
142
143static struct toshiba_acpi_dev *toshiba_acpi;
144
145static const struct acpi_device_id toshiba_device_ids[] = {
146 {"TOS6200", 0},
147 {"TOS6208", 0},
148 {"TOS1900", 0},
149 {"", 0},
150};
151MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
152
153static const struct key_entry toshiba_acpi_keymap[] __devinitconst = {
154 { KE_KEY, 0x101, { KEY_MUTE } },
155 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
156 { KE_KEY, 0x103, { KEY_ZOOMIN } },
157 { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
158 { KE_KEY, 0x139, { KEY_ZOOMRESET } },
159 { KE_KEY, 0x13b, { KEY_COFFEE } },
160 { KE_KEY, 0x13c, { KEY_BATTERY } },
161 { KE_KEY, 0x13d, { KEY_SLEEP } },
162 { KE_KEY, 0x13e, { KEY_SUSPEND } },
163 { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
164 { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
165 { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
166 { KE_KEY, 0x142, { KEY_WLAN } },
167 { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
168 { KE_KEY, 0x17f, { KEY_FN } },
169 { KE_KEY, 0xb05, { KEY_PROG2 } },
170 { KE_KEY, 0xb06, { KEY_WWW } },
171 { KE_KEY, 0xb07, { KEY_MAIL } },
172 { KE_KEY, 0xb30, { KEY_STOP } },
173 { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
174 { KE_KEY, 0xb32, { KEY_NEXTSONG } },
175 { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
176 { KE_KEY, 0xb5a, { KEY_MEDIA } },
177 { KE_IGNORE, 0x1430, { KEY_RESERVED } },
178 { KE_END, 0 },
179};
180
181/* utility
182 */
183
184static __inline__ void _set_bit(u32 * word, u32 mask, int value)
185{
186 *word = (*word & ~mask) | (mask * value);
187}
188
189/* acpi interface wrappers
190 */
191
192static int write_acpi_int(const char *methodName, int val)
193{
194 struct acpi_object_list params;
195 union acpi_object in_objs[1];
196 acpi_status status;
197
198 params.count = ARRAY_SIZE(in_objs);
199 params.pointer = in_objs;
200 in_objs[0].type = ACPI_TYPE_INTEGER;
201 in_objs[0].integer.value = val;
202
203 status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL);
204 return (status == AE_OK) ? 0 : -EIO;
205}
206
207/* Perform a raw HCI call. Here we don't care about input or output buffer
208 * format.
209 */
210static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
211 const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
212{
213 struct acpi_object_list params;
214 union acpi_object in_objs[HCI_WORDS];
215 struct acpi_buffer results;
216 union acpi_object out_objs[HCI_WORDS + 1];
217 acpi_status status;
218 int i;
219
220 params.count = HCI_WORDS;
221 params.pointer = in_objs;
222 for (i = 0; i < HCI_WORDS; ++i) {
223 in_objs[i].type = ACPI_TYPE_INTEGER;
224 in_objs[i].integer.value = in[i];
225 }
226
227 results.length = sizeof(out_objs);
228 results.pointer = out_objs;
229
230 status = acpi_evaluate_object(dev->acpi_dev->handle,
231 (char *)dev->method_hci, ¶ms,
232 &results);
233 if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
234 for (i = 0; i < out_objs->package.count; ++i) {
235 out[i] = out_objs->package.elements[i].integer.value;
236 }
237 }
238
239 return status;
240}
241
242/* common hci tasks (get or set one or two value)
243 *
244 * In addition to the ACPI status, the HCI system returns a result which
245 * may be useful (such as "not supported").
246 */
247
248static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
249 u32 in1, u32 *result)
250{
251 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
252 u32 out[HCI_WORDS];
253 acpi_status status = hci_raw(dev, in, out);
254 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
255 return status;
256}
257
258static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
259 u32 *out1, u32 *result)
260{
261 u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
262 u32 out[HCI_WORDS];
263 acpi_status status = hci_raw(dev, in, out);
264 *out1 = out[2];
265 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
266 return status;
267}
268
269static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
270 u32 in1, u32 in2, u32 *result)
271{
272 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 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
279static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
280 u32 *out1, u32 *out2, u32 *result)
281{
282 u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
283 u32 out[HCI_WORDS];
284 acpi_status status = hci_raw(dev, in, out);
285 *out1 = out[2];
286 *out2 = out[3];
287 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
288 return status;
289}
290
291/* Illumination support */
292static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
293{
294 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
295 u32 out[HCI_WORDS];
296 acpi_status status;
297
298 in[0] = 0xf100;
299 status = hci_raw(dev, in, out);
300 if (ACPI_FAILURE(status)) {
301 pr_info("Illumination device not available\n");
302 return 0;
303 }
304 in[0] = 0xf400;
305 status = hci_raw(dev, in, out);
306 return 1;
307}
308
309static void toshiba_illumination_set(struct led_classdev *cdev,
310 enum led_brightness brightness)
311{
312 struct toshiba_acpi_dev *dev = container_of(cdev,
313 struct toshiba_acpi_dev, led_dev);
314 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
315 u32 out[HCI_WORDS];
316 acpi_status status;
317
318 /* First request : initialize communication. */
319 in[0] = 0xf100;
320 status = hci_raw(dev, in, out);
321 if (ACPI_FAILURE(status)) {
322 pr_info("Illumination device not available\n");
323 return;
324 }
325
326 if (brightness) {
327 /* Switch the illumination on */
328 in[0] = 0xf400;
329 in[1] = 0x14e;
330 in[2] = 1;
331 status = hci_raw(dev, in, out);
332 if (ACPI_FAILURE(status)) {
333 pr_info("ACPI call for illumination failed\n");
334 return;
335 }
336 } else {
337 /* Switch the illumination off */
338 in[0] = 0xf400;
339 in[1] = 0x14e;
340 in[2] = 0;
341 status = hci_raw(dev, in, out);
342 if (ACPI_FAILURE(status)) {
343 pr_info("ACPI call for illumination failed.\n");
344 return;
345 }
346 }
347
348 /* Last request : close communication. */
349 in[0] = 0xf200;
350 in[1] = 0;
351 in[2] = 0;
352 hci_raw(dev, in, out);
353}
354
355static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
356{
357 struct toshiba_acpi_dev *dev = container_of(cdev,
358 struct toshiba_acpi_dev, led_dev);
359 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
360 u32 out[HCI_WORDS];
361 acpi_status status;
362 enum led_brightness result;
363
364 /*Â First request : initialize communication. */
365 in[0] = 0xf100;
366 status = hci_raw(dev, in, out);
367 if (ACPI_FAILURE(status)) {
368 pr_info("Illumination device not available\n");
369 return LED_OFF;
370 }
371
372 /* Check the illumination */
373 in[0] = 0xf300;
374 in[1] = 0x14e;
375 status = hci_raw(dev, in, out);
376 if (ACPI_FAILURE(status)) {
377 pr_info("ACPI call for illumination failed.\n");
378 return LED_OFF;
379 }
380
381 result = out[2] ? LED_FULL : LED_OFF;
382
383 /* Last request : close communication. */
384 in[0] = 0xf200;
385 in[1] = 0;
386 in[2] = 0;
387 hci_raw(dev, in, out);
388
389 return result;
390}
391
392/* Bluetooth rfkill handlers */
393
394static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
395{
396 u32 hci_result;
397 u32 value, value2;
398
399 value = 0;
400 value2 = 0;
401 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
402 if (hci_result == HCI_SUCCESS)
403 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
404
405 return hci_result;
406}
407
408static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
409{
410 u32 hci_result;
411 u32 value, value2;
412
413 value = 0;
414 value2 = 0x0001;
415 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
416
417 *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
418 return hci_result;
419}
420
421static int bt_rfkill_set_block(void *data, bool blocked)
422{
423 struct toshiba_acpi_dev *dev = data;
424 u32 result1, result2;
425 u32 value;
426 int err;
427 bool radio_state;
428
429 value = (blocked == false);
430
431 mutex_lock(&dev->mutex);
432 if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
433 err = -EIO;
434 goto out;
435 }
436
437 if (!radio_state) {
438 err = 0;
439 goto out;
440 }
441
442 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
443 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
444
445 if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
446 err = -EIO;
447 else
448 err = 0;
449 out:
450 mutex_unlock(&dev->mutex);
451 return err;
452}
453
454static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
455{
456 bool new_rfk_state;
457 bool value;
458 u32 hci_result;
459 struct toshiba_acpi_dev *dev = data;
460
461 mutex_lock(&dev->mutex);
462
463 hci_result = hci_get_radio_state(dev, &value);
464 if (hci_result != HCI_SUCCESS) {
465 /* Can't do anything useful */
466 mutex_unlock(&dev->mutex);
467 return;
468 }
469
470 new_rfk_state = value;
471
472 mutex_unlock(&dev->mutex);
473
474 if (rfkill_set_hw_state(rfkill, !new_rfk_state))
475 bt_rfkill_set_block(data, true);
476}
477
478static const struct rfkill_ops toshiba_rfk_ops = {
479 .set_block = bt_rfkill_set_block,
480 .poll = bt_rfkill_poll,
481};
482
483static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
484{
485 u32 hci_result;
486 u32 status;
487
488 hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
489 *enabled = !status;
490 return hci_result == HCI_SUCCESS ? 0 : -EIO;
491}
492
493static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
494{
495 u32 hci_result;
496 u32 value = !enable;
497
498 hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
499 return hci_result == HCI_SUCCESS ? 0 : -EIO;
500}
501
502static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
503
504static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
505{
506 u32 hci_result;
507 u32 value;
508 int brightness = 0;
509
510 if (dev->tr_backlight_supported) {
511 bool enabled;
512 int ret = get_tr_backlight_status(dev, &enabled);
513 if (ret)
514 return ret;
515 if (enabled)
516 return 0;
517 brightness++;
518 }
519
520 hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
521 if (hci_result == HCI_SUCCESS)
522 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
523
524 return -EIO;
525}
526
527static int get_lcd_brightness(struct backlight_device *bd)
528{
529 struct toshiba_acpi_dev *dev = bl_get_data(bd);
530 return __get_lcd_brightness(dev);
531}
532
533static int lcd_proc_show(struct seq_file *m, void *v)
534{
535 struct toshiba_acpi_dev *dev = m->private;
536 int value;
537 int levels;
538
539 if (!dev->backlight_dev)
540 return -ENODEV;
541
542 levels = dev->backlight_dev->props.max_brightness + 1;
543 value = get_lcd_brightness(dev->backlight_dev);
544 if (value >= 0) {
545 seq_printf(m, "brightness: %d\n", value);
546 seq_printf(m, "brightness_levels: %d\n", levels);
547 return 0;
548 }
549
550 pr_err("Error reading LCD brightness\n");
551 return -EIO;
552}
553
554static int lcd_proc_open(struct inode *inode, struct file *file)
555{
556 return single_open(file, lcd_proc_show, PDE(inode)->data);
557}
558
559static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
560{
561 u32 hci_result;
562
563 if (dev->tr_backlight_supported) {
564 bool enable = !value;
565 int ret = set_tr_backlight_status(dev, enable);
566 if (ret)
567 return ret;
568 if (value)
569 value--;
570 }
571
572 value = value << HCI_LCD_BRIGHTNESS_SHIFT;
573 hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
574 return hci_result == HCI_SUCCESS ? 0 : -EIO;
575}
576
577static int set_lcd_status(struct backlight_device *bd)
578{
579 struct toshiba_acpi_dev *dev = bl_get_data(bd);
580 return set_lcd_brightness(dev, bd->props.brightness);
581}
582
583static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
584 size_t count, loff_t *pos)
585{
586 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
587 char cmd[42];
588 size_t len;
589 int value;
590 int ret;
591 int levels = dev->backlight_dev->props.max_brightness + 1;
592
593 len = min(count, sizeof(cmd) - 1);
594 if (copy_from_user(cmd, buf, len))
595 return -EFAULT;
596 cmd[len] = '\0';
597
598 if (sscanf(cmd, " brightness : %i", &value) == 1 &&
599 value >= 0 && value < levels) {
600 ret = set_lcd_brightness(dev, value);
601 if (ret == 0)
602 ret = count;
603 } else {
604 ret = -EINVAL;
605 }
606 return ret;
607}
608
609static const struct file_operations lcd_proc_fops = {
610 .owner = THIS_MODULE,
611 .open = lcd_proc_open,
612 .read = seq_read,
613 .llseek = seq_lseek,
614 .release = single_release,
615 .write = lcd_proc_write,
616};
617
618static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
619{
620 u32 hci_result;
621
622 hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
623 return hci_result == HCI_SUCCESS ? 0 : -EIO;
624}
625
626static int video_proc_show(struct seq_file *m, void *v)
627{
628 struct toshiba_acpi_dev *dev = m->private;
629 u32 value;
630 int ret;
631
632 ret = get_video_status(dev, &value);
633 if (!ret) {
634 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
635 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
636 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
637 seq_printf(m, "lcd_out: %d\n", is_lcd);
638 seq_printf(m, "crt_out: %d\n", is_crt);
639 seq_printf(m, "tv_out: %d\n", is_tv);
640 }
641
642 return ret;
643}
644
645static int video_proc_open(struct inode *inode, struct file *file)
646{
647 return single_open(file, video_proc_show, PDE(inode)->data);
648}
649
650static ssize_t video_proc_write(struct file *file, const char __user *buf,
651 size_t count, loff_t *pos)
652{
653 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
654 char *cmd, *buffer;
655 int ret;
656 int value;
657 int remain = count;
658 int lcd_out = -1;
659 int crt_out = -1;
660 int tv_out = -1;
661 u32 video_out;
662
663 cmd = kmalloc(count + 1, GFP_KERNEL);
664 if (!cmd)
665 return -ENOMEM;
666 if (copy_from_user(cmd, buf, count)) {
667 kfree(cmd);
668 return -EFAULT;
669 }
670 cmd[count] = '\0';
671
672 buffer = cmd;
673
674 /* scan expression. Multiple expressions may be delimited with ;
675 *
676 * NOTE: to keep scanning simple, invalid fields are ignored
677 */
678 while (remain) {
679 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
680 lcd_out = value & 1;
681 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
682 crt_out = value & 1;
683 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
684 tv_out = value & 1;
685 /* advance to one character past the next ; */
686 do {
687 ++buffer;
688 --remain;
689 }
690 while (remain && *(buffer - 1) != ';');
691 }
692
693 kfree(cmd);
694
695 ret = get_video_status(dev, &video_out);
696 if (!ret) {
697 unsigned int new_video_out = video_out;
698 if (lcd_out != -1)
699 _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
700 if (crt_out != -1)
701 _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
702 if (tv_out != -1)
703 _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
704 /* To avoid unnecessary video disruption, only write the new
705 * video setting if something changed. */
706 if (new_video_out != video_out)
707 ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
708 }
709
710 return ret ? ret : count;
711}
712
713static const struct file_operations video_proc_fops = {
714 .owner = THIS_MODULE,
715 .open = video_proc_open,
716 .read = seq_read,
717 .llseek = seq_lseek,
718 .release = single_release,
719 .write = video_proc_write,
720};
721
722static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
723{
724 u32 hci_result;
725
726 hci_read1(dev, HCI_FAN, status, &hci_result);
727 return hci_result == HCI_SUCCESS ? 0 : -EIO;
728}
729
730static int fan_proc_show(struct seq_file *m, void *v)
731{
732 struct toshiba_acpi_dev *dev = m->private;
733 int ret;
734 u32 value;
735
736 ret = get_fan_status(dev, &value);
737 if (!ret) {
738 seq_printf(m, "running: %d\n", (value > 0));
739 seq_printf(m, "force_on: %d\n", dev->force_fan);
740 }
741
742 return ret;
743}
744
745static int fan_proc_open(struct inode *inode, struct file *file)
746{
747 return single_open(file, fan_proc_show, PDE(inode)->data);
748}
749
750static ssize_t fan_proc_write(struct file *file, const char __user *buf,
751 size_t count, loff_t *pos)
752{
753 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
754 char cmd[42];
755 size_t len;
756 int value;
757 u32 hci_result;
758
759 len = min(count, sizeof(cmd) - 1);
760 if (copy_from_user(cmd, buf, len))
761 return -EFAULT;
762 cmd[len] = '\0';
763
764 if (sscanf(cmd, " force_on : %i", &value) == 1 &&
765 value >= 0 && value <= 1) {
766 hci_write1(dev, HCI_FAN, value, &hci_result);
767 if (hci_result != HCI_SUCCESS)
768 return -EIO;
769 else
770 dev->force_fan = value;
771 } else {
772 return -EINVAL;
773 }
774
775 return count;
776}
777
778static const struct file_operations fan_proc_fops = {
779 .owner = THIS_MODULE,
780 .open = fan_proc_open,
781 .read = seq_read,
782 .llseek = seq_lseek,
783 .release = single_release,
784 .write = fan_proc_write,
785};
786
787static int keys_proc_show(struct seq_file *m, void *v)
788{
789 struct toshiba_acpi_dev *dev = m->private;
790 u32 hci_result;
791 u32 value;
792
793 if (!dev->key_event_valid && dev->system_event_supported) {
794 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
795 if (hci_result == HCI_SUCCESS) {
796 dev->key_event_valid = 1;
797 dev->last_key_event = value;
798 } else if (hci_result == HCI_EMPTY) {
799 /* better luck next time */
800 } else if (hci_result == HCI_NOT_SUPPORTED) {
801 /* This is a workaround for an unresolved issue on
802 * some machines where system events sporadically
803 * become disabled. */
804 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
805 pr_notice("Re-enabled hotkeys\n");
806 } else {
807 pr_err("Error reading hotkey status\n");
808 return -EIO;
809 }
810 }
811
812 seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
813 seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
814 return 0;
815}
816
817static int keys_proc_open(struct inode *inode, struct file *file)
818{
819 return single_open(file, keys_proc_show, PDE(inode)->data);
820}
821
822static ssize_t keys_proc_write(struct file *file, const char __user *buf,
823 size_t count, loff_t *pos)
824{
825 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
826 char cmd[42];
827 size_t len;
828 int value;
829
830 len = min(count, sizeof(cmd) - 1);
831 if (copy_from_user(cmd, buf, len))
832 return -EFAULT;
833 cmd[len] = '\0';
834
835 if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
836 dev->key_event_valid = 0;
837 } else {
838 return -EINVAL;
839 }
840
841 return count;
842}
843
844static const struct file_operations keys_proc_fops = {
845 .owner = THIS_MODULE,
846 .open = keys_proc_open,
847 .read = seq_read,
848 .llseek = seq_lseek,
849 .release = single_release,
850 .write = keys_proc_write,
851};
852
853static int version_proc_show(struct seq_file *m, void *v)
854{
855 seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
856 seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
857 return 0;
858}
859
860static int version_proc_open(struct inode *inode, struct file *file)
861{
862 return single_open(file, version_proc_show, PDE(inode)->data);
863}
864
865static const struct file_operations version_proc_fops = {
866 .owner = THIS_MODULE,
867 .open = version_proc_open,
868 .read = seq_read,
869 .llseek = seq_lseek,
870 .release = single_release,
871};
872
873/* proc and module init
874 */
875
876#define PROC_TOSHIBA "toshiba"
877
878static void __devinit
879create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
880{
881 if (dev->backlight_dev)
882 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
883 &lcd_proc_fops, dev);
884 if (dev->video_supported)
885 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
886 &video_proc_fops, dev);
887 if (dev->fan_supported)
888 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
889 &fan_proc_fops, dev);
890 if (dev->hotkey_dev)
891 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
892 &keys_proc_fops, dev);
893 proc_create_data("version", S_IRUGO, toshiba_proc_dir,
894 &version_proc_fops, dev);
895}
896
897static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
898{
899 if (dev->backlight_dev)
900 remove_proc_entry("lcd", toshiba_proc_dir);
901 if (dev->video_supported)
902 remove_proc_entry("video", toshiba_proc_dir);
903 if (dev->fan_supported)
904 remove_proc_entry("fan", toshiba_proc_dir);
905 if (dev->hotkey_dev)
906 remove_proc_entry("keys", toshiba_proc_dir);
907 remove_proc_entry("version", toshiba_proc_dir);
908}
909
910static const struct backlight_ops toshiba_backlight_data = {
911 .options = BL_CORE_SUSPENDRESUME,
912 .get_brightness = get_lcd_brightness,
913 .update_status = set_lcd_status,
914};
915
916static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
917 struct serio *port)
918{
919 if (str & 0x20)
920 return false;
921
922 if (unlikely(data == 0xe0))
923 return false;
924
925 if ((data & 0x7f) == TOS1900_FN_SCAN) {
926 schedule_work(&toshiba_acpi->hotkey_work);
927 return true;
928 }
929
930 return false;
931}
932
933static void toshiba_acpi_hotkey_work(struct work_struct *work)
934{
935 acpi_handle ec_handle = ec_get_handle();
936 acpi_status status;
937
938 if (!ec_handle)
939 return;
940
941 status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
942 if (ACPI_FAILURE(status))
943 pr_err("ACPI NTFY method execution failed\n");
944}
945
946/*
947 * Returns hotkey scancode, or < 0 on failure.
948 */
949static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
950{
951 struct acpi_buffer buf;
952 union acpi_object out_obj;
953 acpi_status status;
954
955 buf.pointer = &out_obj;
956 buf.length = sizeof(out_obj);
957
958 status = acpi_evaluate_object(dev->acpi_dev->handle, "INFO",
959 NULL, &buf);
960 if (ACPI_FAILURE(status) || out_obj.type != ACPI_TYPE_INTEGER) {
961 pr_err("ACPI INFO method execution failed\n");
962 return -EIO;
963 }
964
965 return out_obj.integer.value;
966}
967
968static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
969 int scancode)
970{
971 if (scancode == 0x100)
972 return;
973
974 /* act on key press; ignore key release */
975 if (scancode & 0x80)
976 return;
977
978 if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
979 pr_info("Unknown key %x\n", scancode);
980}
981
982static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
983{
984 acpi_status status;
985 acpi_handle ec_handle, handle;
986 int error;
987 u32 hci_result;
988
989 dev->hotkey_dev = input_allocate_device();
990 if (!dev->hotkey_dev) {
991 pr_info("Unable to register input device\n");
992 return -ENOMEM;
993 }
994
995 dev->hotkey_dev->name = "Toshiba input device";
996 dev->hotkey_dev->phys = "toshiba_acpi/input0";
997 dev->hotkey_dev->id.bustype = BUS_HOST;
998
999 error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
1000 if (error)
1001 goto err_free_dev;
1002
1003 /*
1004 * For some machines the SCI responsible for providing hotkey
1005 * notification doesn't fire. We can trigger the notification
1006 * whenever the Fn key is pressed using the NTFY method, if
1007 * supported, so if it's present set up an i8042 key filter
1008 * for this purpose.
1009 */
1010 status = AE_ERROR;
1011 ec_handle = ec_get_handle();
1012 if (ec_handle)
1013 status = acpi_get_handle(ec_handle, "NTFY", &handle);
1014
1015 if (ACPI_SUCCESS(status)) {
1016 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
1017
1018 error = i8042_install_filter(toshiba_acpi_i8042_filter);
1019 if (error) {
1020 pr_err("Error installing key filter\n");
1021 goto err_free_keymap;
1022 }
1023
1024 dev->ntfy_supported = 1;
1025 }
1026
1027 /*
1028 * Determine hotkey query interface. Prefer using the INFO
1029 * method when it is available.
1030 */
1031 status = acpi_get_handle(dev->acpi_dev->handle, "INFO", &handle);
1032 if (ACPI_SUCCESS(status)) {
1033 dev->info_supported = 1;
1034 } else {
1035 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1036 if (hci_result == HCI_SUCCESS)
1037 dev->system_event_supported = 1;
1038 }
1039
1040 if (!dev->info_supported && !dev->system_event_supported) {
1041 pr_warn("No hotkey query interface found\n");
1042 goto err_remove_filter;
1043 }
1044
1045 status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
1046 if (ACPI_FAILURE(status)) {
1047 pr_info("Unable to enable hotkeys\n");
1048 error = -ENODEV;
1049 goto err_remove_filter;
1050 }
1051
1052 error = input_register_device(dev->hotkey_dev);
1053 if (error) {
1054 pr_info("Unable to register input device\n");
1055 goto err_remove_filter;
1056 }
1057
1058 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
1059 return 0;
1060
1061 err_remove_filter:
1062 if (dev->ntfy_supported)
1063 i8042_remove_filter(toshiba_acpi_i8042_filter);
1064 err_free_keymap:
1065 sparse_keymap_free(dev->hotkey_dev);
1066 err_free_dev:
1067 input_free_device(dev->hotkey_dev);
1068 dev->hotkey_dev = NULL;
1069 return error;
1070}
1071
1072static int __devinit toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
1073{
1074 struct backlight_properties props;
1075 int brightness;
1076 int ret;
1077 bool enabled;
1078
1079 /*
1080 * Some machines don't support the backlight methods at all, and
1081 * others support it read-only. Either of these is pretty useless,
1082 * so only register the backlight device if the backlight method
1083 * supports both reads and writes.
1084 */
1085 brightness = __get_lcd_brightness(dev);
1086 if (brightness < 0)
1087 return 0;
1088 ret = set_lcd_brightness(dev, brightness);
1089 if (ret) {
1090 pr_debug("Backlight method is read-only, disabling backlight support\n");
1091 return 0;
1092 }
1093
1094 /* Determine whether or not BIOS supports transflective backlight */
1095 ret = get_tr_backlight_status(dev, &enabled);
1096 dev->tr_backlight_supported = !ret;
1097
1098 memset(&props, 0, sizeof(props));
1099 props.type = BACKLIGHT_PLATFORM;
1100 props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1101
1102 /* adding an extra level and having 0 change to transflective mode */
1103 if (dev->tr_backlight_supported)
1104 props.max_brightness++;
1105
1106 dev->backlight_dev = backlight_device_register("toshiba",
1107 &dev->acpi_dev->dev,
1108 dev,
1109 &toshiba_backlight_data,
1110 &props);
1111 if (IS_ERR(dev->backlight_dev)) {
1112 ret = PTR_ERR(dev->backlight_dev);
1113 pr_err("Could not register toshiba backlight device\n");
1114 dev->backlight_dev = NULL;
1115 return ret;
1116 }
1117
1118 dev->backlight_dev->props.brightness = brightness;
1119 return 0;
1120}
1121
1122static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type)
1123{
1124 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1125
1126 remove_toshiba_proc_entries(dev);
1127
1128 if (dev->ntfy_supported) {
1129 i8042_remove_filter(toshiba_acpi_i8042_filter);
1130 cancel_work_sync(&dev->hotkey_work);
1131 }
1132
1133 if (dev->hotkey_dev) {
1134 input_unregister_device(dev->hotkey_dev);
1135 sparse_keymap_free(dev->hotkey_dev);
1136 }
1137
1138 if (dev->bt_rfk) {
1139 rfkill_unregister(dev->bt_rfk);
1140 rfkill_destroy(dev->bt_rfk);
1141 }
1142
1143 if (dev->backlight_dev)
1144 backlight_device_unregister(dev->backlight_dev);
1145
1146 if (dev->illumination_supported)
1147 led_classdev_unregister(&dev->led_dev);
1148
1149 if (toshiba_acpi)
1150 toshiba_acpi = NULL;
1151
1152 kfree(dev);
1153
1154 return 0;
1155}
1156
1157static const char * __devinit find_hci_method(acpi_handle handle)
1158{
1159 acpi_status status;
1160 acpi_handle hci_handle;
1161
1162 status = acpi_get_handle(handle, "GHCI", &hci_handle);
1163 if (ACPI_SUCCESS(status))
1164 return "GHCI";
1165
1166 status = acpi_get_handle(handle, "SPFC", &hci_handle);
1167 if (ACPI_SUCCESS(status))
1168 return "SPFC";
1169
1170 return NULL;
1171}
1172
1173static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev)
1174{
1175 struct toshiba_acpi_dev *dev;
1176 const char *hci_method;
1177 u32 dummy;
1178 bool bt_present;
1179 int ret = 0;
1180
1181 if (toshiba_acpi)
1182 return -EBUSY;
1183
1184 pr_info("Toshiba Laptop ACPI Extras version %s\n",
1185 TOSHIBA_ACPI_VERSION);
1186
1187 hci_method = find_hci_method(acpi_dev->handle);
1188 if (!hci_method) {
1189 pr_err("HCI interface not found\n");
1190 return -ENODEV;
1191 }
1192
1193 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1194 if (!dev)
1195 return -ENOMEM;
1196 dev->acpi_dev = acpi_dev;
1197 dev->method_hci = hci_method;
1198 acpi_dev->driver_data = dev;
1199
1200 if (toshiba_acpi_setup_keyboard(dev))
1201 pr_info("Unable to activate hotkeys\n");
1202
1203 mutex_init(&dev->mutex);
1204
1205 ret = toshiba_acpi_setup_backlight(dev);
1206 if (ret)
1207 goto error;
1208
1209 /* Register rfkill switch for Bluetooth */
1210 if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
1211 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
1212 &acpi_dev->dev,
1213 RFKILL_TYPE_BLUETOOTH,
1214 &toshiba_rfk_ops,
1215 dev);
1216 if (!dev->bt_rfk) {
1217 pr_err("unable to allocate rfkill device\n");
1218 ret = -ENOMEM;
1219 goto error;
1220 }
1221
1222 ret = rfkill_register(dev->bt_rfk);
1223 if (ret) {
1224 pr_err("unable to register rfkill device\n");
1225 rfkill_destroy(dev->bt_rfk);
1226 goto error;
1227 }
1228 }
1229
1230 if (toshiba_illumination_available(dev)) {
1231 dev->led_dev.name = "toshiba::illumination";
1232 dev->led_dev.max_brightness = 1;
1233 dev->led_dev.brightness_set = toshiba_illumination_set;
1234 dev->led_dev.brightness_get = toshiba_illumination_get;
1235 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1236 dev->illumination_supported = 1;
1237 }
1238
1239 /* Determine whether or not BIOS supports fan and video interfaces */
1240
1241 ret = get_video_status(dev, &dummy);
1242 dev->video_supported = !ret;
1243
1244 ret = get_fan_status(dev, &dummy);
1245 dev->fan_supported = !ret;
1246
1247 create_toshiba_proc_entries(dev);
1248
1249 toshiba_acpi = dev;
1250
1251 return 0;
1252
1253error:
1254 toshiba_acpi_remove(acpi_dev, 0);
1255 return ret;
1256}
1257
1258static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
1259{
1260 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1261 u32 hci_result, value;
1262 int retries = 3;
1263 int scancode;
1264
1265 if (event != 0x80)
1266 return;
1267
1268 if (dev->info_supported) {
1269 scancode = toshiba_acpi_query_hotkey(dev);
1270 if (scancode < 0)
1271 pr_err("Failed to query hotkey event\n");
1272 else if (scancode != 0)
1273 toshiba_acpi_report_hotkey(dev, scancode);
1274 } else if (dev->system_event_supported) {
1275 do {
1276 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1277 switch (hci_result) {
1278 case HCI_SUCCESS:
1279 toshiba_acpi_report_hotkey(dev, (int)value);
1280 break;
1281 case HCI_NOT_SUPPORTED:
1282 /*
1283 * This is a workaround for an unresolved
1284 * issue on some machines where system events
1285 * sporadically become disabled.
1286 */
1287 hci_write1(dev, HCI_SYSTEM_EVENT, 1,
1288 &hci_result);
1289 pr_notice("Re-enabled hotkeys\n");
1290 /* fall through */
1291 default:
1292 retries--;
1293 break;
1294 }
1295 } while (retries && hci_result != HCI_EMPTY);
1296 }
1297}
1298
1299static int toshiba_acpi_suspend(struct acpi_device *acpi_dev,
1300 pm_message_t state)
1301{
1302 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1303 u32 result;
1304
1305 if (dev->hotkey_dev)
1306 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
1307
1308 return 0;
1309}
1310
1311static int toshiba_acpi_resume(struct acpi_device *acpi_dev)
1312{
1313 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1314 u32 result;
1315
1316 if (dev->hotkey_dev)
1317 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
1318
1319 return 0;
1320}
1321
1322static struct acpi_driver toshiba_acpi_driver = {
1323 .name = "Toshiba ACPI driver",
1324 .owner = THIS_MODULE,
1325 .ids = toshiba_device_ids,
1326 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1327 .ops = {
1328 .add = toshiba_acpi_add,
1329 .remove = toshiba_acpi_remove,
1330 .notify = toshiba_acpi_notify,
1331 .suspend = toshiba_acpi_suspend,
1332 .resume = toshiba_acpi_resume,
1333 },
1334};
1335
1336static int __init toshiba_acpi_init(void)
1337{
1338 int ret;
1339
1340 /*
1341 * Machines with this WMI guid aren't supported due to bugs in
1342 * their AML. This check relies on wmi initializing before
1343 * toshiba_acpi to guarantee guids have been identified.
1344 */
1345 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
1346 return -ENODEV;
1347
1348 toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1349 if (!toshiba_proc_dir) {
1350 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
1351 return -ENODEV;
1352 }
1353
1354 ret = acpi_bus_register_driver(&toshiba_acpi_driver);
1355 if (ret) {
1356 pr_err("Failed to register ACPI driver: %d\n", ret);
1357 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1358 }
1359
1360 return ret;
1361}
1362
1363static void __exit toshiba_acpi_exit(void)
1364{
1365 acpi_bus_unregister_driver(&toshiba_acpi_driver);
1366 if (toshiba_proc_dir)
1367 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1368}
1369
1370module_init(toshiba_acpi_init);
1371module_exit(toshiba_acpi_exit);
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 <asm/uaccess.h>
60
61MODULE_AUTHOR("John Belmonte");
62MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
63MODULE_LICENSE("GPL");
64
65#define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
66
67/* Scan code for Fn key on TOS1900 models */
68#define TOS1900_FN_SCAN 0x6e
69
70/* Toshiba ACPI method paths */
71#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
72
73/* Toshiba HCI interface definitions
74 *
75 * HCI is Toshiba's "Hardware Control Interface" which is supposed to
76 * be uniform across all their models. Ideally we would just call
77 * dedicated ACPI methods instead of using this primitive interface.
78 * However the ACPI methods seem to be incomplete in some areas (for
79 * example they allow setting, but not reading, the LCD brightness value),
80 * so this is still useful.
81 *
82 * SCI stands for "System Configuration Interface" which aim is to
83 * conceal differences in hardware between different models.
84 */
85
86#define HCI_WORDS 6
87
88/* operations */
89#define HCI_SET 0xff00
90#define HCI_GET 0xfe00
91#define SCI_OPEN 0xf100
92#define SCI_CLOSE 0xf200
93#define SCI_GET 0xf300
94#define SCI_SET 0xf400
95
96/* return codes */
97#define HCI_SUCCESS 0x0000
98#define HCI_FAILURE 0x1000
99#define HCI_NOT_SUPPORTED 0x8000
100#define HCI_EMPTY 0x8c00
101#define HCI_DATA_NOT_AVAILABLE 0x8d20
102#define HCI_NOT_INITIALIZED 0x8d50
103#define SCI_OPEN_CLOSE_OK 0x0044
104#define SCI_ALREADY_OPEN 0x8100
105#define SCI_NOT_OPENED 0x8200
106#define SCI_INPUT_DATA_ERROR 0x8300
107#define SCI_NOT_PRESENT 0x8600
108
109/* registers */
110#define HCI_FAN 0x0004
111#define HCI_TR_BACKLIGHT 0x0005
112#define HCI_SYSTEM_EVENT 0x0016
113#define HCI_VIDEO_OUT 0x001c
114#define HCI_HOTKEY_EVENT 0x001e
115#define HCI_LCD_BRIGHTNESS 0x002a
116#define HCI_WIRELESS 0x0056
117#define HCI_ACCELEROMETER 0x006d
118#define HCI_KBD_ILLUMINATION 0x0095
119#define HCI_ECO_MODE 0x0097
120#define HCI_ACCELEROMETER2 0x00a6
121#define SCI_ILLUMINATION 0x014e
122#define SCI_KBD_ILLUM_STATUS 0x015c
123#define SCI_TOUCHPAD 0x050e
124
125/* field definitions */
126#define HCI_ACCEL_MASK 0x7fff
127#define HCI_HOTKEY_DISABLE 0x0b
128#define HCI_HOTKEY_ENABLE 0x09
129#define HCI_LCD_BRIGHTNESS_BITS 3
130#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
131#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
132#define HCI_MISC_SHIFT 0x10
133#define HCI_VIDEO_OUT_LCD 0x1
134#define HCI_VIDEO_OUT_CRT 0x2
135#define HCI_VIDEO_OUT_TV 0x4
136#define HCI_WIRELESS_KILL_SWITCH 0x01
137#define HCI_WIRELESS_BT_PRESENT 0x0f
138#define HCI_WIRELESS_BT_ATTACH 0x40
139#define HCI_WIRELESS_BT_POWER 0x80
140#define SCI_KBD_MODE_FNZ 0x1
141#define SCI_KBD_MODE_AUTO 0x2
142
143struct toshiba_acpi_dev {
144 struct acpi_device *acpi_dev;
145 const char *method_hci;
146 struct rfkill *bt_rfk;
147 struct input_dev *hotkey_dev;
148 struct work_struct hotkey_work;
149 struct backlight_device *backlight_dev;
150 struct led_classdev led_dev;
151 struct led_classdev kbd_led;
152 struct led_classdev eco_led;
153
154 int force_fan;
155 int last_key_event;
156 int key_event_valid;
157 int kbd_mode;
158 int kbd_time;
159
160 unsigned int illumination_supported:1;
161 unsigned int video_supported:1;
162 unsigned int fan_supported:1;
163 unsigned int system_event_supported:1;
164 unsigned int ntfy_supported:1;
165 unsigned int info_supported:1;
166 unsigned int tr_backlight_supported:1;
167 unsigned int kbd_illum_supported:1;
168 unsigned int kbd_led_registered:1;
169 unsigned int touchpad_supported:1;
170 unsigned int eco_supported:1;
171 unsigned int accelerometer_supported:1;
172 unsigned int sysfs_created:1;
173
174 struct mutex mutex;
175};
176
177static struct toshiba_acpi_dev *toshiba_acpi;
178
179static const struct acpi_device_id toshiba_device_ids[] = {
180 {"TOS6200", 0},
181 {"TOS6208", 0},
182 {"TOS1900", 0},
183 {"", 0},
184};
185MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
186
187static const struct key_entry toshiba_acpi_keymap[] = {
188 { KE_KEY, 0x9e, { KEY_RFKILL } },
189 { KE_KEY, 0x101, { KEY_MUTE } },
190 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
191 { KE_KEY, 0x103, { KEY_ZOOMIN } },
192 { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
193 { KE_KEY, 0x139, { KEY_ZOOMRESET } },
194 { KE_KEY, 0x13b, { KEY_COFFEE } },
195 { KE_KEY, 0x13c, { KEY_BATTERY } },
196 { KE_KEY, 0x13d, { KEY_SLEEP } },
197 { KE_KEY, 0x13e, { KEY_SUSPEND } },
198 { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
199 { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
200 { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
201 { KE_KEY, 0x142, { KEY_WLAN } },
202 { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
203 { KE_KEY, 0x17f, { KEY_FN } },
204 { KE_KEY, 0xb05, { KEY_PROG2 } },
205 { KE_KEY, 0xb06, { KEY_WWW } },
206 { KE_KEY, 0xb07, { KEY_MAIL } },
207 { KE_KEY, 0xb30, { KEY_STOP } },
208 { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
209 { KE_KEY, 0xb32, { KEY_NEXTSONG } },
210 { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
211 { KE_KEY, 0xb5a, { KEY_MEDIA } },
212 { KE_IGNORE, 0x1430, { KEY_RESERVED } },
213 { KE_END, 0 },
214};
215
216/* utility
217 */
218
219static __inline__ void _set_bit(u32 * word, u32 mask, int value)
220{
221 *word = (*word & ~mask) | (mask * value);
222}
223
224/* acpi interface wrappers
225 */
226
227static int write_acpi_int(const char *methodName, int val)
228{
229 acpi_status status;
230
231 status = acpi_execute_simple_method(NULL, (char *)methodName, val);
232 return (status == AE_OK) ? 0 : -EIO;
233}
234
235/* Perform a raw HCI call. Here we don't care about input or output buffer
236 * format.
237 */
238static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
239 const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
240{
241 struct acpi_object_list params;
242 union acpi_object in_objs[HCI_WORDS];
243 struct acpi_buffer results;
244 union acpi_object out_objs[HCI_WORDS + 1];
245 acpi_status status;
246 int i;
247
248 params.count = HCI_WORDS;
249 params.pointer = in_objs;
250 for (i = 0; i < HCI_WORDS; ++i) {
251 in_objs[i].type = ACPI_TYPE_INTEGER;
252 in_objs[i].integer.value = in[i];
253 }
254
255 results.length = sizeof(out_objs);
256 results.pointer = out_objs;
257
258 status = acpi_evaluate_object(dev->acpi_dev->handle,
259 (char *)dev->method_hci, ¶ms,
260 &results);
261 if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
262 for (i = 0; i < out_objs->package.count; ++i) {
263 out[i] = out_objs->package.elements[i].integer.value;
264 }
265 }
266
267 return status;
268}
269
270/* common hci tasks (get or set one or two value)
271 *
272 * In addition to the ACPI status, the HCI system returns a result which
273 * may be useful (such as "not supported").
274 */
275
276static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
277 u32 in1, u32 *result)
278{
279 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
280 u32 out[HCI_WORDS];
281 acpi_status status = hci_raw(dev, in, out);
282 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
283 return status;
284}
285
286static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
287 u32 *out1, u32 *result)
288{
289 u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
290 u32 out[HCI_WORDS];
291 acpi_status status = hci_raw(dev, in, out);
292 *out1 = out[2];
293 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
294 return status;
295}
296
297static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
298 u32 in1, u32 in2, u32 *result)
299{
300 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
301 u32 out[HCI_WORDS];
302 acpi_status status = hci_raw(dev, in, out);
303 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
304 return status;
305}
306
307static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
308 u32 *out1, u32 *out2, u32 *result)
309{
310 u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
311 u32 out[HCI_WORDS];
312 acpi_status status = hci_raw(dev, in, out);
313 *out1 = out[2];
314 *out2 = out[3];
315 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
316 return status;
317}
318
319/* common sci tasks
320 */
321
322static int sci_open(struct toshiba_acpi_dev *dev)
323{
324 u32 in[HCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
325 u32 out[HCI_WORDS];
326 acpi_status status;
327
328 status = hci_raw(dev, in, out);
329 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
330 pr_err("ACPI call to open SCI failed\n");
331 return 0;
332 }
333
334 if (out[0] == SCI_OPEN_CLOSE_OK) {
335 return 1;
336 } else if (out[0] == SCI_ALREADY_OPEN) {
337 pr_info("Toshiba SCI already opened\n");
338 return 1;
339 } else if (out[0] == SCI_NOT_PRESENT) {
340 pr_info("Toshiba SCI is not present\n");
341 }
342
343 return 0;
344}
345
346static void sci_close(struct toshiba_acpi_dev *dev)
347{
348 u32 in[HCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
349 u32 out[HCI_WORDS];
350 acpi_status status;
351
352 status = hci_raw(dev, in, out);
353 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
354 pr_err("ACPI call to close SCI failed\n");
355 return;
356 }
357
358 if (out[0] == SCI_OPEN_CLOSE_OK)
359 return;
360 else if (out[0] == SCI_NOT_OPENED)
361 pr_info("Toshiba SCI not opened\n");
362 else if (out[0] == SCI_NOT_PRESENT)
363 pr_info("Toshiba SCI is not present\n");
364}
365
366static acpi_status sci_read(struct toshiba_acpi_dev *dev, u32 reg,
367 u32 *out1, u32 *result)
368{
369 u32 in[HCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
370 u32 out[HCI_WORDS];
371 acpi_status status = hci_raw(dev, in, out);
372 *out1 = out[2];
373 *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
374 return status;
375}
376
377static acpi_status sci_write(struct toshiba_acpi_dev *dev, u32 reg,
378 u32 in1, u32 *result)
379{
380 u32 in[HCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
381 u32 out[HCI_WORDS];
382 acpi_status status = hci_raw(dev, in, out);
383 *result = (ACPI_SUCCESS(status)) ? out[0] : HCI_FAILURE;
384 return status;
385}
386
387/* Illumination support */
388static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
389{
390 u32 in[HCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
391 u32 out[HCI_WORDS];
392 acpi_status status;
393
394 if (!sci_open(dev))
395 return 0;
396
397 status = hci_raw(dev, in, out);
398 sci_close(dev);
399 if (ACPI_FAILURE(status) || out[0] == HCI_FAILURE) {
400 pr_err("ACPI call to query Illumination support failed\n");
401 return 0;
402 } else if (out[0] == HCI_NOT_SUPPORTED || out[1] != 1) {
403 pr_info("Illumination device not available\n");
404 return 0;
405 }
406
407 return 1;
408}
409
410static void toshiba_illumination_set(struct led_classdev *cdev,
411 enum led_brightness brightness)
412{
413 struct toshiba_acpi_dev *dev = container_of(cdev,
414 struct toshiba_acpi_dev, led_dev);
415 u32 state, result;
416 acpi_status status;
417
418 /* First request : initialize communication. */
419 if (!sci_open(dev))
420 return;
421
422 /* Switch the illumination on/off */
423 state = brightness ? 1 : 0;
424 status = sci_write(dev, SCI_ILLUMINATION, state, &result);
425 sci_close(dev);
426 if (ACPI_FAILURE(status)) {
427 pr_err("ACPI call for illumination failed\n");
428 return;
429 } else if (result == HCI_NOT_SUPPORTED) {
430 pr_info("Illumination not supported\n");
431 return;
432 }
433}
434
435static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
436{
437 struct toshiba_acpi_dev *dev = container_of(cdev,
438 struct toshiba_acpi_dev, led_dev);
439 u32 state, result;
440 acpi_status status;
441
442 /*Â First request : initialize communication. */
443 if (!sci_open(dev))
444 return LED_OFF;
445
446 /* Check the illumination */
447 status = sci_read(dev, SCI_ILLUMINATION, &state, &result);
448 sci_close(dev);
449 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
450 pr_err("ACPI call for illumination failed\n");
451 return LED_OFF;
452 } else if (result == HCI_NOT_SUPPORTED) {
453 pr_info("Illumination not supported\n");
454 return LED_OFF;
455 }
456
457 return state ? LED_FULL : LED_OFF;
458}
459
460/* KBD Illumination */
461static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
462{
463 u32 result;
464 acpi_status status;
465
466 if (!sci_open(dev))
467 return -EIO;
468
469 status = sci_write(dev, SCI_KBD_ILLUM_STATUS, time, &result);
470 sci_close(dev);
471 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
472 pr_err("ACPI call to set KBD backlight status failed\n");
473 return -EIO;
474 } else if (result == HCI_NOT_SUPPORTED) {
475 pr_info("Keyboard backlight status not supported\n");
476 return -ENODEV;
477 }
478
479 return 0;
480}
481
482static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
483{
484 u32 result;
485 acpi_status status;
486
487 if (!sci_open(dev))
488 return -EIO;
489
490 status = sci_read(dev, SCI_KBD_ILLUM_STATUS, time, &result);
491 sci_close(dev);
492 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
493 pr_err("ACPI call to get KBD backlight status failed\n");
494 return -EIO;
495 } else if (result == HCI_NOT_SUPPORTED) {
496 pr_info("Keyboard backlight status not supported\n");
497 return -ENODEV;
498 }
499
500 return 0;
501}
502
503static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
504{
505 struct toshiba_acpi_dev *dev = container_of(cdev,
506 struct toshiba_acpi_dev, kbd_led);
507 u32 state, result;
508 acpi_status status;
509
510 /* Check the keyboard backlight state */
511 status = hci_read1(dev, HCI_KBD_ILLUMINATION, &state, &result);
512 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
513 pr_err("ACPI call to get the keyboard backlight failed\n");
514 return LED_OFF;
515 } else if (result == HCI_NOT_SUPPORTED) {
516 pr_info("Keyboard backlight not supported\n");
517 return LED_OFF;
518 }
519
520 return state ? LED_FULL : LED_OFF;
521}
522
523static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
524 enum led_brightness brightness)
525{
526 struct toshiba_acpi_dev *dev = container_of(cdev,
527 struct toshiba_acpi_dev, kbd_led);
528 u32 state, result;
529 acpi_status status;
530
531 /* Set the keyboard backlight state */
532 state = brightness ? 1 : 0;
533 status = hci_write1(dev, HCI_KBD_ILLUMINATION, state, &result);
534 if (ACPI_FAILURE(status) || result == SCI_INPUT_DATA_ERROR) {
535 pr_err("ACPI call to set KBD Illumination mode failed\n");
536 return;
537 } else if (result == HCI_NOT_SUPPORTED) {
538 pr_info("Keyboard backlight not supported\n");
539 return;
540 }
541}
542
543/* TouchPad support */
544static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
545{
546 u32 result;
547 acpi_status status;
548
549 if (!sci_open(dev))
550 return -EIO;
551
552 status = sci_write(dev, SCI_TOUCHPAD, state, &result);
553 sci_close(dev);
554 if (ACPI_FAILURE(status)) {
555 pr_err("ACPI call to set the touchpad failed\n");
556 return -EIO;
557 } else if (result == HCI_NOT_SUPPORTED) {
558 return -ENODEV;
559 }
560
561 return 0;
562}
563
564static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
565{
566 u32 result;
567 acpi_status status;
568
569 if (!sci_open(dev))
570 return -EIO;
571
572 status = sci_read(dev, SCI_TOUCHPAD, state, &result);
573 sci_close(dev);
574 if (ACPI_FAILURE(status)) {
575 pr_err("ACPI call to query the touchpad failed\n");
576 return -EIO;
577 } else if (result == HCI_NOT_SUPPORTED) {
578 return -ENODEV;
579 }
580
581 return 0;
582}
583
584/* Eco Mode support */
585static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
586{
587 acpi_status status;
588 u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
589 u32 out[HCI_WORDS];
590
591 status = hci_raw(dev, in, out);
592 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
593 pr_info("ACPI call to get ECO led failed\n");
594 return 0;
595 }
596
597 return 1;
598}
599
600static enum led_brightness toshiba_eco_mode_get_status(struct led_classdev *cdev)
601{
602 struct toshiba_acpi_dev *dev = container_of(cdev,
603 struct toshiba_acpi_dev, eco_led);
604 u32 in[HCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
605 u32 out[HCI_WORDS];
606 acpi_status status;
607
608 status = hci_raw(dev, in, out);
609 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
610 pr_err("ACPI call to get ECO led failed\n");
611 return LED_OFF;
612 }
613
614 return out[2] ? LED_FULL : LED_OFF;
615}
616
617static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
618 enum led_brightness brightness)
619{
620 struct toshiba_acpi_dev *dev = container_of(cdev,
621 struct toshiba_acpi_dev, eco_led);
622 u32 in[HCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
623 u32 out[HCI_WORDS];
624 acpi_status status;
625
626 /* Switch the Eco Mode led on/off */
627 in[2] = (brightness) ? 1 : 0;
628 status = hci_raw(dev, in, out);
629 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
630 pr_err("ACPI call to set ECO led failed\n");
631 return;
632 }
633}
634
635/* Accelerometer support */
636static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
637{
638 u32 in[HCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
639 u32 out[HCI_WORDS];
640 acpi_status status;
641
642 /* Check if the accelerometer call exists,
643 * this call also serves as initialization
644 */
645 status = hci_raw(dev, in, out);
646 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
647 pr_err("ACPI call to query the accelerometer failed\n");
648 return -EIO;
649 } else if (out[0] == HCI_DATA_NOT_AVAILABLE ||
650 out[0] == HCI_NOT_INITIALIZED) {
651 pr_err("Accelerometer not initialized\n");
652 return -EIO;
653 } else if (out[0] == HCI_NOT_SUPPORTED) {
654 pr_info("Accelerometer not supported\n");
655 return -ENODEV;
656 }
657
658 return 0;
659}
660
661static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
662 u32 *xy, u32 *z)
663{
664 u32 in[HCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
665 u32 out[HCI_WORDS];
666 acpi_status status;
667
668 /* Check the Accelerometer status */
669 status = hci_raw(dev, in, out);
670 if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) {
671 pr_err("ACPI call to query the accelerometer failed\n");
672 return -EIO;
673 }
674
675 *xy = out[2];
676 *z = out[4];
677
678 return 0;
679}
680
681/* Bluetooth rfkill handlers */
682
683static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
684{
685 u32 hci_result;
686 u32 value, value2;
687
688 value = 0;
689 value2 = 0;
690 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
691 if (hci_result == HCI_SUCCESS)
692 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
693
694 return hci_result;
695}
696
697static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
698{
699 u32 hci_result;
700 u32 value, value2;
701
702 value = 0;
703 value2 = 0x0001;
704 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
705
706 *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
707 return hci_result;
708}
709
710static int bt_rfkill_set_block(void *data, bool blocked)
711{
712 struct toshiba_acpi_dev *dev = data;
713 u32 result1, result2;
714 u32 value;
715 int err;
716 bool radio_state;
717
718 value = (blocked == false);
719
720 mutex_lock(&dev->mutex);
721 if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
722 err = -EIO;
723 goto out;
724 }
725
726 if (!radio_state) {
727 err = 0;
728 goto out;
729 }
730
731 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
732 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
733
734 if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
735 err = -EIO;
736 else
737 err = 0;
738 out:
739 mutex_unlock(&dev->mutex);
740 return err;
741}
742
743static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
744{
745 bool new_rfk_state;
746 bool value;
747 u32 hci_result;
748 struct toshiba_acpi_dev *dev = data;
749
750 mutex_lock(&dev->mutex);
751
752 hci_result = hci_get_radio_state(dev, &value);
753 if (hci_result != HCI_SUCCESS) {
754 /* Can't do anything useful */
755 mutex_unlock(&dev->mutex);
756 return;
757 }
758
759 new_rfk_state = value;
760
761 mutex_unlock(&dev->mutex);
762
763 if (rfkill_set_hw_state(rfkill, !new_rfk_state))
764 bt_rfkill_set_block(data, true);
765}
766
767static const struct rfkill_ops toshiba_rfk_ops = {
768 .set_block = bt_rfkill_set_block,
769 .poll = bt_rfkill_poll,
770};
771
772static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
773{
774 u32 hci_result;
775 u32 status;
776
777 hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
778 *enabled = !status;
779 return hci_result == HCI_SUCCESS ? 0 : -EIO;
780}
781
782static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
783{
784 u32 hci_result;
785 u32 value = !enable;
786
787 hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
788 return hci_result == HCI_SUCCESS ? 0 : -EIO;
789}
790
791static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
792
793static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
794{
795 u32 hci_result;
796 u32 value;
797 int brightness = 0;
798
799 if (dev->tr_backlight_supported) {
800 bool enabled;
801 int ret = get_tr_backlight_status(dev, &enabled);
802 if (ret)
803 return ret;
804 if (enabled)
805 return 0;
806 brightness++;
807 }
808
809 hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
810 if (hci_result == HCI_SUCCESS)
811 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
812
813 return -EIO;
814}
815
816static int get_lcd_brightness(struct backlight_device *bd)
817{
818 struct toshiba_acpi_dev *dev = bl_get_data(bd);
819 return __get_lcd_brightness(dev);
820}
821
822static int lcd_proc_show(struct seq_file *m, void *v)
823{
824 struct toshiba_acpi_dev *dev = m->private;
825 int value;
826 int levels;
827
828 if (!dev->backlight_dev)
829 return -ENODEV;
830
831 levels = dev->backlight_dev->props.max_brightness + 1;
832 value = get_lcd_brightness(dev->backlight_dev);
833 if (value >= 0) {
834 seq_printf(m, "brightness: %d\n", value);
835 seq_printf(m, "brightness_levels: %d\n", levels);
836 return 0;
837 }
838
839 pr_err("Error reading LCD brightness\n");
840 return -EIO;
841}
842
843static int lcd_proc_open(struct inode *inode, struct file *file)
844{
845 return single_open(file, lcd_proc_show, PDE_DATA(inode));
846}
847
848static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
849{
850 u32 hci_result;
851
852 if (dev->tr_backlight_supported) {
853 bool enable = !value;
854 int ret = set_tr_backlight_status(dev, enable);
855 if (ret)
856 return ret;
857 if (value)
858 value--;
859 }
860
861 value = value << HCI_LCD_BRIGHTNESS_SHIFT;
862 hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
863 return hci_result == HCI_SUCCESS ? 0 : -EIO;
864}
865
866static int set_lcd_status(struct backlight_device *bd)
867{
868 struct toshiba_acpi_dev *dev = bl_get_data(bd);
869 return set_lcd_brightness(dev, bd->props.brightness);
870}
871
872static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
873 size_t count, loff_t *pos)
874{
875 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
876 char cmd[42];
877 size_t len;
878 int value;
879 int ret;
880 int levels = dev->backlight_dev->props.max_brightness + 1;
881
882 len = min(count, sizeof(cmd) - 1);
883 if (copy_from_user(cmd, buf, len))
884 return -EFAULT;
885 cmd[len] = '\0';
886
887 if (sscanf(cmd, " brightness : %i", &value) == 1 &&
888 value >= 0 && value < levels) {
889 ret = set_lcd_brightness(dev, value);
890 if (ret == 0)
891 ret = count;
892 } else {
893 ret = -EINVAL;
894 }
895 return ret;
896}
897
898static const struct file_operations lcd_proc_fops = {
899 .owner = THIS_MODULE,
900 .open = lcd_proc_open,
901 .read = seq_read,
902 .llseek = seq_lseek,
903 .release = single_release,
904 .write = lcd_proc_write,
905};
906
907static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
908{
909 u32 hci_result;
910
911 hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
912 return hci_result == HCI_SUCCESS ? 0 : -EIO;
913}
914
915static int video_proc_show(struct seq_file *m, void *v)
916{
917 struct toshiba_acpi_dev *dev = m->private;
918 u32 value;
919 int ret;
920
921 ret = get_video_status(dev, &value);
922 if (!ret) {
923 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
924 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
925 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
926 seq_printf(m, "lcd_out: %d\n", is_lcd);
927 seq_printf(m, "crt_out: %d\n", is_crt);
928 seq_printf(m, "tv_out: %d\n", is_tv);
929 }
930
931 return ret;
932}
933
934static int video_proc_open(struct inode *inode, struct file *file)
935{
936 return single_open(file, video_proc_show, PDE_DATA(inode));
937}
938
939static ssize_t video_proc_write(struct file *file, const char __user *buf,
940 size_t count, loff_t *pos)
941{
942 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
943 char *cmd, *buffer;
944 int ret;
945 int value;
946 int remain = count;
947 int lcd_out = -1;
948 int crt_out = -1;
949 int tv_out = -1;
950 u32 video_out;
951
952 cmd = kmalloc(count + 1, GFP_KERNEL);
953 if (!cmd)
954 return -ENOMEM;
955 if (copy_from_user(cmd, buf, count)) {
956 kfree(cmd);
957 return -EFAULT;
958 }
959 cmd[count] = '\0';
960
961 buffer = cmd;
962
963 /* scan expression. Multiple expressions may be delimited with ;
964 *
965 * NOTE: to keep scanning simple, invalid fields are ignored
966 */
967 while (remain) {
968 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
969 lcd_out = value & 1;
970 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
971 crt_out = value & 1;
972 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
973 tv_out = value & 1;
974 /* advance to one character past the next ; */
975 do {
976 ++buffer;
977 --remain;
978 }
979 while (remain && *(buffer - 1) != ';');
980 }
981
982 kfree(cmd);
983
984 ret = get_video_status(dev, &video_out);
985 if (!ret) {
986 unsigned int new_video_out = video_out;
987 if (lcd_out != -1)
988 _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
989 if (crt_out != -1)
990 _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
991 if (tv_out != -1)
992 _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
993 /* To avoid unnecessary video disruption, only write the new
994 * video setting if something changed. */
995 if (new_video_out != video_out)
996 ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
997 }
998
999 return ret ? ret : count;
1000}
1001
1002static const struct file_operations video_proc_fops = {
1003 .owner = THIS_MODULE,
1004 .open = video_proc_open,
1005 .read = seq_read,
1006 .llseek = seq_lseek,
1007 .release = single_release,
1008 .write = video_proc_write,
1009};
1010
1011static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
1012{
1013 u32 hci_result;
1014
1015 hci_read1(dev, HCI_FAN, status, &hci_result);
1016 return hci_result == HCI_SUCCESS ? 0 : -EIO;
1017}
1018
1019static int fan_proc_show(struct seq_file *m, void *v)
1020{
1021 struct toshiba_acpi_dev *dev = m->private;
1022 int ret;
1023 u32 value;
1024
1025 ret = get_fan_status(dev, &value);
1026 if (!ret) {
1027 seq_printf(m, "running: %d\n", (value > 0));
1028 seq_printf(m, "force_on: %d\n", dev->force_fan);
1029 }
1030
1031 return ret;
1032}
1033
1034static int fan_proc_open(struct inode *inode, struct file *file)
1035{
1036 return single_open(file, fan_proc_show, PDE_DATA(inode));
1037}
1038
1039static ssize_t fan_proc_write(struct file *file, const char __user *buf,
1040 size_t count, loff_t *pos)
1041{
1042 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1043 char cmd[42];
1044 size_t len;
1045 int value;
1046 u32 hci_result;
1047
1048 len = min(count, sizeof(cmd) - 1);
1049 if (copy_from_user(cmd, buf, len))
1050 return -EFAULT;
1051 cmd[len] = '\0';
1052
1053 if (sscanf(cmd, " force_on : %i", &value) == 1 &&
1054 value >= 0 && value <= 1) {
1055 hci_write1(dev, HCI_FAN, value, &hci_result);
1056 if (hci_result != HCI_SUCCESS)
1057 return -EIO;
1058 else
1059 dev->force_fan = value;
1060 } else {
1061 return -EINVAL;
1062 }
1063
1064 return count;
1065}
1066
1067static const struct file_operations fan_proc_fops = {
1068 .owner = THIS_MODULE,
1069 .open = fan_proc_open,
1070 .read = seq_read,
1071 .llseek = seq_lseek,
1072 .release = single_release,
1073 .write = fan_proc_write,
1074};
1075
1076static int keys_proc_show(struct seq_file *m, void *v)
1077{
1078 struct toshiba_acpi_dev *dev = m->private;
1079 u32 hci_result;
1080 u32 value;
1081
1082 if (!dev->key_event_valid && dev->system_event_supported) {
1083 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1084 if (hci_result == HCI_SUCCESS) {
1085 dev->key_event_valid = 1;
1086 dev->last_key_event = value;
1087 } else if (hci_result == HCI_EMPTY) {
1088 /* better luck next time */
1089 } else if (hci_result == HCI_NOT_SUPPORTED) {
1090 /* This is a workaround for an unresolved issue on
1091 * some machines where system events sporadically
1092 * become disabled. */
1093 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1094 pr_notice("Re-enabled hotkeys\n");
1095 } else {
1096 pr_err("Error reading hotkey status\n");
1097 return -EIO;
1098 }
1099 }
1100
1101 seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
1102 seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
1103 return 0;
1104}
1105
1106static int keys_proc_open(struct inode *inode, struct file *file)
1107{
1108 return single_open(file, keys_proc_show, PDE_DATA(inode));
1109}
1110
1111static ssize_t keys_proc_write(struct file *file, const char __user *buf,
1112 size_t count, loff_t *pos)
1113{
1114 struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
1115 char cmd[42];
1116 size_t len;
1117 int value;
1118
1119 len = min(count, sizeof(cmd) - 1);
1120 if (copy_from_user(cmd, buf, len))
1121 return -EFAULT;
1122 cmd[len] = '\0';
1123
1124 if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
1125 dev->key_event_valid = 0;
1126 } else {
1127 return -EINVAL;
1128 }
1129
1130 return count;
1131}
1132
1133static const struct file_operations keys_proc_fops = {
1134 .owner = THIS_MODULE,
1135 .open = keys_proc_open,
1136 .read = seq_read,
1137 .llseek = seq_lseek,
1138 .release = single_release,
1139 .write = keys_proc_write,
1140};
1141
1142static int version_proc_show(struct seq_file *m, void *v)
1143{
1144 seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
1145 seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
1146 return 0;
1147}
1148
1149static int version_proc_open(struct inode *inode, struct file *file)
1150{
1151 return single_open(file, version_proc_show, PDE_DATA(inode));
1152}
1153
1154static const struct file_operations version_proc_fops = {
1155 .owner = THIS_MODULE,
1156 .open = version_proc_open,
1157 .read = seq_read,
1158 .llseek = seq_lseek,
1159 .release = single_release,
1160};
1161
1162/* proc and module init
1163 */
1164
1165#define PROC_TOSHIBA "toshiba"
1166
1167static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1168{
1169 if (dev->backlight_dev)
1170 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1171 &lcd_proc_fops, dev);
1172 if (dev->video_supported)
1173 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1174 &video_proc_fops, dev);
1175 if (dev->fan_supported)
1176 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1177 &fan_proc_fops, dev);
1178 if (dev->hotkey_dev)
1179 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
1180 &keys_proc_fops, dev);
1181 proc_create_data("version", S_IRUGO, toshiba_proc_dir,
1182 &version_proc_fops, dev);
1183}
1184
1185static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
1186{
1187 if (dev->backlight_dev)
1188 remove_proc_entry("lcd", toshiba_proc_dir);
1189 if (dev->video_supported)
1190 remove_proc_entry("video", toshiba_proc_dir);
1191 if (dev->fan_supported)
1192 remove_proc_entry("fan", toshiba_proc_dir);
1193 if (dev->hotkey_dev)
1194 remove_proc_entry("keys", toshiba_proc_dir);
1195 remove_proc_entry("version", toshiba_proc_dir);
1196}
1197
1198static const struct backlight_ops toshiba_backlight_data = {
1199 .options = BL_CORE_SUSPENDRESUME,
1200 .get_brightness = get_lcd_brightness,
1201 .update_status = set_lcd_status,
1202};
1203
1204/*
1205 * Sysfs files
1206 */
1207
1208static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
1209 struct device_attribute *attr,
1210 const char *buf, size_t count)
1211{
1212 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1213 int mode = -1;
1214 int time = -1;
1215
1216 if (sscanf(buf, "%i", &mode) != 1 && (mode != 2 || mode != 1))
1217 return -EINVAL;
1218
1219 /* Set the Keyboard Backlight Mode where:
1220 * Mode - Auto (2) | FN-Z (1)
1221 * Auto - KBD backlight turns off automatically in given time
1222 * FN-Z - KBD backlight "toggles" when hotkey pressed
1223 */
1224 if (mode != -1 && toshiba->kbd_mode != mode) {
1225 time = toshiba->kbd_time << HCI_MISC_SHIFT;
1226 time = time + toshiba->kbd_mode;
1227 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1228 return -EIO;
1229 toshiba->kbd_mode = mode;
1230 }
1231
1232 return count;
1233}
1234
1235static ssize_t toshiba_kbd_bl_mode_show(struct device *dev,
1236 struct device_attribute *attr,
1237 char *buf)
1238{
1239 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1240 u32 time;
1241
1242 if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1243 return -EIO;
1244
1245 return sprintf(buf, "%i\n", time & 0x07);
1246}
1247
1248static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev,
1249 struct device_attribute *attr,
1250 const char *buf, size_t count)
1251{
1252 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1253 int time = -1;
1254
1255 if (sscanf(buf, "%i", &time) != 1 && (time < 0 || time > 60))
1256 return -EINVAL;
1257
1258 /* Set the Keyboard Backlight Timeout: 0-60 seconds */
1259 if (time != -1 && toshiba->kbd_time != time) {
1260 time = time << HCI_MISC_SHIFT;
1261 time = (toshiba->kbd_mode == SCI_KBD_MODE_AUTO) ?
1262 time + 1 : time + 2;
1263 if (toshiba_kbd_illum_status_set(toshiba, time) < 0)
1264 return -EIO;
1265 toshiba->kbd_time = time >> HCI_MISC_SHIFT;
1266 }
1267
1268 return count;
1269}
1270
1271static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev,
1272 struct device_attribute *attr,
1273 char *buf)
1274{
1275 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1276 u32 time;
1277
1278 if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
1279 return -EIO;
1280
1281 return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
1282}
1283
1284static ssize_t toshiba_touchpad_store(struct device *dev,
1285 struct device_attribute *attr,
1286 const char *buf, size_t count)
1287{
1288 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1289 int state;
1290
1291 /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
1292 if (sscanf(buf, "%i", &state) == 1 && (state == 0 || state == 1)) {
1293 if (toshiba_touchpad_set(toshiba, state) < 0)
1294 return -EIO;
1295 }
1296
1297 return count;
1298}
1299
1300static ssize_t toshiba_touchpad_show(struct device *dev,
1301 struct device_attribute *attr, char *buf)
1302{
1303 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1304 u32 state;
1305 int ret;
1306
1307 ret = toshiba_touchpad_get(toshiba, &state);
1308 if (ret < 0)
1309 return ret;
1310
1311 return sprintf(buf, "%i\n", state);
1312}
1313
1314static ssize_t toshiba_position_show(struct device *dev,
1315 struct device_attribute *attr, char *buf)
1316{
1317 struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
1318 u32 xyval, zval, tmp;
1319 u16 x, y, z;
1320 int ret;
1321
1322 xyval = zval = 0;
1323 ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
1324 if (ret < 0)
1325 return ret;
1326
1327 x = xyval & HCI_ACCEL_MASK;
1328 tmp = xyval >> HCI_MISC_SHIFT;
1329 y = tmp & HCI_ACCEL_MASK;
1330 z = zval & HCI_ACCEL_MASK;
1331
1332 return sprintf(buf, "%d %d %d\n", x, y, z);
1333}
1334
1335static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR,
1336 toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store);
1337static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR,
1338 toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store);
1339static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR,
1340 toshiba_touchpad_show, toshiba_touchpad_store);
1341static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL);
1342
1343static struct attribute *toshiba_attributes[] = {
1344 &dev_attr_kbd_backlight_mode.attr,
1345 &dev_attr_kbd_backlight_timeout.attr,
1346 &dev_attr_touchpad.attr,
1347 &dev_attr_position.attr,
1348 NULL,
1349};
1350
1351static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
1352 struct attribute *attr, int idx)
1353{
1354 struct device *dev = container_of(kobj, struct device, kobj);
1355 struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
1356 bool exists = true;
1357
1358 if (attr == &dev_attr_kbd_backlight_mode.attr)
1359 exists = (drv->kbd_illum_supported) ? true : false;
1360 else if (attr == &dev_attr_kbd_backlight_timeout.attr)
1361 exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
1362 else if (attr == &dev_attr_touchpad.attr)
1363 exists = (drv->touchpad_supported) ? true : false;
1364 else if (attr == &dev_attr_position.attr)
1365 exists = (drv->accelerometer_supported) ? true : false;
1366
1367 return exists ? attr->mode : 0;
1368}
1369
1370static struct attribute_group toshiba_attr_group = {
1371 .is_visible = toshiba_sysfs_is_visible,
1372 .attrs = toshiba_attributes,
1373};
1374
1375static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
1376 struct serio *port)
1377{
1378 if (str & 0x20)
1379 return false;
1380
1381 if (unlikely(data == 0xe0))
1382 return false;
1383
1384 if ((data & 0x7f) == TOS1900_FN_SCAN) {
1385 schedule_work(&toshiba_acpi->hotkey_work);
1386 return true;
1387 }
1388
1389 return false;
1390}
1391
1392static void toshiba_acpi_hotkey_work(struct work_struct *work)
1393{
1394 acpi_handle ec_handle = ec_get_handle();
1395 acpi_status status;
1396
1397 if (!ec_handle)
1398 return;
1399
1400 status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
1401 if (ACPI_FAILURE(status))
1402 pr_err("ACPI NTFY method execution failed\n");
1403}
1404
1405/*
1406 * Returns hotkey scancode, or < 0 on failure.
1407 */
1408static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
1409{
1410 unsigned long long value;
1411 acpi_status status;
1412
1413 status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
1414 NULL, &value);
1415 if (ACPI_FAILURE(status)) {
1416 pr_err("ACPI INFO method execution failed\n");
1417 return -EIO;
1418 }
1419
1420 return value;
1421}
1422
1423static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
1424 int scancode)
1425{
1426 if (scancode == 0x100)
1427 return;
1428
1429 /* act on key press; ignore key release */
1430 if (scancode & 0x80)
1431 return;
1432
1433 if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
1434 pr_info("Unknown key %x\n", scancode);
1435}
1436
1437static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
1438{
1439 acpi_status status;
1440 acpi_handle ec_handle;
1441 int error;
1442 u32 hci_result;
1443
1444 dev->hotkey_dev = input_allocate_device();
1445 if (!dev->hotkey_dev)
1446 return -ENOMEM;
1447
1448 dev->hotkey_dev->name = "Toshiba input device";
1449 dev->hotkey_dev->phys = "toshiba_acpi/input0";
1450 dev->hotkey_dev->id.bustype = BUS_HOST;
1451
1452 error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
1453 if (error)
1454 goto err_free_dev;
1455
1456 /*
1457 * For some machines the SCI responsible for providing hotkey
1458 * notification doesn't fire. We can trigger the notification
1459 * whenever the Fn key is pressed using the NTFY method, if
1460 * supported, so if it's present set up an i8042 key filter
1461 * for this purpose.
1462 */
1463 status = AE_ERROR;
1464 ec_handle = ec_get_handle();
1465 if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
1466 INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
1467
1468 error = i8042_install_filter(toshiba_acpi_i8042_filter);
1469 if (error) {
1470 pr_err("Error installing key filter\n");
1471 goto err_free_keymap;
1472 }
1473
1474 dev->ntfy_supported = 1;
1475 }
1476
1477 /*
1478 * Determine hotkey query interface. Prefer using the INFO
1479 * method when it is available.
1480 */
1481 if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
1482 dev->info_supported = 1;
1483 else {
1484 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1485 if (hci_result == HCI_SUCCESS)
1486 dev->system_event_supported = 1;
1487 }
1488
1489 if (!dev->info_supported && !dev->system_event_supported) {
1490 pr_warn("No hotkey query interface found\n");
1491 goto err_remove_filter;
1492 }
1493
1494 status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
1495 if (ACPI_FAILURE(status)) {
1496 pr_info("Unable to enable hotkeys\n");
1497 error = -ENODEV;
1498 goto err_remove_filter;
1499 }
1500
1501 error = input_register_device(dev->hotkey_dev);
1502 if (error) {
1503 pr_info("Unable to register input device\n");
1504 goto err_remove_filter;
1505 }
1506
1507 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
1508 return 0;
1509
1510 err_remove_filter:
1511 if (dev->ntfy_supported)
1512 i8042_remove_filter(toshiba_acpi_i8042_filter);
1513 err_free_keymap:
1514 sparse_keymap_free(dev->hotkey_dev);
1515 err_free_dev:
1516 input_free_device(dev->hotkey_dev);
1517 dev->hotkey_dev = NULL;
1518 return error;
1519}
1520
1521static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
1522{
1523 struct backlight_properties props;
1524 int brightness;
1525 int ret;
1526 bool enabled;
1527
1528 /*
1529 * Some machines don't support the backlight methods at all, and
1530 * others support it read-only. Either of these is pretty useless,
1531 * so only register the backlight device if the backlight method
1532 * supports both reads and writes.
1533 */
1534 brightness = __get_lcd_brightness(dev);
1535 if (brightness < 0)
1536 return 0;
1537 ret = set_lcd_brightness(dev, brightness);
1538 if (ret) {
1539 pr_debug("Backlight method is read-only, disabling backlight support\n");
1540 return 0;
1541 }
1542
1543 /* Determine whether or not BIOS supports transflective backlight */
1544 ret = get_tr_backlight_status(dev, &enabled);
1545 dev->tr_backlight_supported = !ret;
1546
1547 memset(&props, 0, sizeof(props));
1548 props.type = BACKLIGHT_PLATFORM;
1549 props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
1550
1551 /* adding an extra level and having 0 change to transflective mode */
1552 if (dev->tr_backlight_supported)
1553 props.max_brightness++;
1554
1555 dev->backlight_dev = backlight_device_register("toshiba",
1556 &dev->acpi_dev->dev,
1557 dev,
1558 &toshiba_backlight_data,
1559 &props);
1560 if (IS_ERR(dev->backlight_dev)) {
1561 ret = PTR_ERR(dev->backlight_dev);
1562 pr_err("Could not register toshiba backlight device\n");
1563 dev->backlight_dev = NULL;
1564 return ret;
1565 }
1566
1567 dev->backlight_dev->props.brightness = brightness;
1568 return 0;
1569}
1570
1571static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
1572{
1573 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1574
1575 remove_toshiba_proc_entries(dev);
1576
1577 if (dev->sysfs_created)
1578 sysfs_remove_group(&dev->acpi_dev->dev.kobj,
1579 &toshiba_attr_group);
1580
1581 if (dev->ntfy_supported) {
1582 i8042_remove_filter(toshiba_acpi_i8042_filter);
1583 cancel_work_sync(&dev->hotkey_work);
1584 }
1585
1586 if (dev->hotkey_dev) {
1587 input_unregister_device(dev->hotkey_dev);
1588 sparse_keymap_free(dev->hotkey_dev);
1589 }
1590
1591 if (dev->bt_rfk) {
1592 rfkill_unregister(dev->bt_rfk);
1593 rfkill_destroy(dev->bt_rfk);
1594 }
1595
1596 if (dev->backlight_dev)
1597 backlight_device_unregister(dev->backlight_dev);
1598
1599 if (dev->illumination_supported)
1600 led_classdev_unregister(&dev->led_dev);
1601
1602 if (dev->kbd_led_registered)
1603 led_classdev_unregister(&dev->kbd_led);
1604
1605 if (dev->eco_supported)
1606 led_classdev_unregister(&dev->eco_led);
1607
1608 if (toshiba_acpi)
1609 toshiba_acpi = NULL;
1610
1611 kfree(dev);
1612
1613 return 0;
1614}
1615
1616static const char *find_hci_method(acpi_handle handle)
1617{
1618 if (acpi_has_method(handle, "GHCI"))
1619 return "GHCI";
1620
1621 if (acpi_has_method(handle, "SPFC"))
1622 return "SPFC";
1623
1624 return NULL;
1625}
1626
1627static int toshiba_acpi_add(struct acpi_device *acpi_dev)
1628{
1629 struct toshiba_acpi_dev *dev;
1630 const char *hci_method;
1631 u32 dummy;
1632 bool bt_present;
1633 int ret = 0;
1634
1635 if (toshiba_acpi)
1636 return -EBUSY;
1637
1638 pr_info("Toshiba Laptop ACPI Extras version %s\n",
1639 TOSHIBA_ACPI_VERSION);
1640
1641 hci_method = find_hci_method(acpi_dev->handle);
1642 if (!hci_method) {
1643 pr_err("HCI interface not found\n");
1644 return -ENODEV;
1645 }
1646
1647 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1648 if (!dev)
1649 return -ENOMEM;
1650 dev->acpi_dev = acpi_dev;
1651 dev->method_hci = hci_method;
1652 acpi_dev->driver_data = dev;
1653 dev_set_drvdata(&acpi_dev->dev, dev);
1654
1655 if (toshiba_acpi_setup_keyboard(dev))
1656 pr_info("Unable to activate hotkeys\n");
1657
1658 mutex_init(&dev->mutex);
1659
1660 ret = toshiba_acpi_setup_backlight(dev);
1661 if (ret)
1662 goto error;
1663
1664 /* Register rfkill switch for Bluetooth */
1665 if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
1666 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
1667 &acpi_dev->dev,
1668 RFKILL_TYPE_BLUETOOTH,
1669 &toshiba_rfk_ops,
1670 dev);
1671 if (!dev->bt_rfk) {
1672 pr_err("unable to allocate rfkill device\n");
1673 ret = -ENOMEM;
1674 goto error;
1675 }
1676
1677 ret = rfkill_register(dev->bt_rfk);
1678 if (ret) {
1679 pr_err("unable to register rfkill device\n");
1680 rfkill_destroy(dev->bt_rfk);
1681 goto error;
1682 }
1683 }
1684
1685 if (toshiba_illumination_available(dev)) {
1686 dev->led_dev.name = "toshiba::illumination";
1687 dev->led_dev.max_brightness = 1;
1688 dev->led_dev.brightness_set = toshiba_illumination_set;
1689 dev->led_dev.brightness_get = toshiba_illumination_get;
1690 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1691 dev->illumination_supported = 1;
1692 }
1693
1694 if (toshiba_eco_mode_available(dev)) {
1695 dev->eco_led.name = "toshiba::eco_mode";
1696 dev->eco_led.max_brightness = 1;
1697 dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
1698 dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
1699 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
1700 dev->eco_supported = 1;
1701 }
1702
1703 ret = toshiba_kbd_illum_status_get(dev, &dummy);
1704 if (!ret) {
1705 dev->kbd_time = dummy >> HCI_MISC_SHIFT;
1706 dev->kbd_mode = dummy & 0x07;
1707 }
1708 dev->kbd_illum_supported = !ret;
1709 /*
1710 * Only register the LED if KBD illumination is supported
1711 * and the keyboard backlight operation mode is set to FN-Z
1712 */
1713 if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
1714 dev->kbd_led.name = "toshiba::kbd_backlight";
1715 dev->kbd_led.max_brightness = 1;
1716 dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
1717 dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
1718 if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
1719 dev->kbd_led_registered = 1;
1720 }
1721
1722 ret = toshiba_touchpad_get(dev, &dummy);
1723 dev->touchpad_supported = !ret;
1724
1725 ret = toshiba_accelerometer_supported(dev);
1726 dev->accelerometer_supported = !ret;
1727
1728 /* Determine whether or not BIOS supports fan and video interfaces */
1729
1730 ret = get_video_status(dev, &dummy);
1731 dev->video_supported = !ret;
1732
1733 ret = get_fan_status(dev, &dummy);
1734 dev->fan_supported = !ret;
1735
1736 ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
1737 &toshiba_attr_group);
1738 if (ret) {
1739 dev->sysfs_created = 0;
1740 goto error;
1741 }
1742 dev->sysfs_created = !ret;
1743
1744 create_toshiba_proc_entries(dev);
1745
1746 toshiba_acpi = dev;
1747
1748 return 0;
1749
1750error:
1751 toshiba_acpi_remove(acpi_dev);
1752 return ret;
1753}
1754
1755static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
1756{
1757 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1758 u32 hci_result, value;
1759 int retries = 3;
1760 int scancode;
1761
1762 if (event != 0x80)
1763 return;
1764
1765 if (dev->info_supported) {
1766 scancode = toshiba_acpi_query_hotkey(dev);
1767 if (scancode < 0)
1768 pr_err("Failed to query hotkey event\n");
1769 else if (scancode != 0)
1770 toshiba_acpi_report_hotkey(dev, scancode);
1771 } else if (dev->system_event_supported) {
1772 do {
1773 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1774 switch (hci_result) {
1775 case HCI_SUCCESS:
1776 toshiba_acpi_report_hotkey(dev, (int)value);
1777 break;
1778 case HCI_NOT_SUPPORTED:
1779 /*
1780 * This is a workaround for an unresolved
1781 * issue on some machines where system events
1782 * sporadically become disabled.
1783 */
1784 hci_write1(dev, HCI_SYSTEM_EVENT, 1,
1785 &hci_result);
1786 pr_notice("Re-enabled hotkeys\n");
1787 /* fall through */
1788 default:
1789 retries--;
1790 break;
1791 }
1792 } while (retries && hci_result != HCI_EMPTY);
1793 }
1794}
1795
1796#ifdef CONFIG_PM_SLEEP
1797static int toshiba_acpi_suspend(struct device *device)
1798{
1799 struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1800 u32 result;
1801
1802 if (dev->hotkey_dev)
1803 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
1804
1805 return 0;
1806}
1807
1808static int toshiba_acpi_resume(struct device *device)
1809{
1810 struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
1811 u32 result;
1812
1813 if (dev->hotkey_dev)
1814 hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
1815
1816 return 0;
1817}
1818#endif
1819
1820static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
1821 toshiba_acpi_suspend, toshiba_acpi_resume);
1822
1823static struct acpi_driver toshiba_acpi_driver = {
1824 .name = "Toshiba ACPI driver",
1825 .owner = THIS_MODULE,
1826 .ids = toshiba_device_ids,
1827 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1828 .ops = {
1829 .add = toshiba_acpi_add,
1830 .remove = toshiba_acpi_remove,
1831 .notify = toshiba_acpi_notify,
1832 },
1833 .drv.pm = &toshiba_acpi_pm,
1834};
1835
1836static int __init toshiba_acpi_init(void)
1837{
1838 int ret;
1839
1840 /*
1841 * Machines with this WMI guid aren't supported due to bugs in
1842 * their AML. This check relies on wmi initializing before
1843 * toshiba_acpi to guarantee guids have been identified.
1844 */
1845 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
1846 return -ENODEV;
1847
1848 toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1849 if (!toshiba_proc_dir) {
1850 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
1851 return -ENODEV;
1852 }
1853
1854 ret = acpi_bus_register_driver(&toshiba_acpi_driver);
1855 if (ret) {
1856 pr_err("Failed to register ACPI driver: %d\n", ret);
1857 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1858 }
1859
1860 return ret;
1861}
1862
1863static void __exit toshiba_acpi_exit(void)
1864{
1865 acpi_bus_unregister_driver(&toshiba_acpi_driver);
1866 if (toshiba_proc_dir)
1867 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1868}
1869
1870module_init(toshiba_acpi_init);
1871module_exit(toshiba_acpi_exit);